[svn-r2] Oops...

55 files changed, 11040 insertions, 0 deletions

diff --git a/src/H5.c b/src/H5.c
new file mode 100644
index 0000000..cf77b61
--- /dev/null
+++ b/src/H5.c
@@ -0,0 +1,275 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       hdf5.c
+   HDF library support routines
+
+   EXPORTED ROUTINES
+       H5dont_atexit    -- Indicate that an 'atexit' routine is _not_ to be installed
+       H5version        -- Check the version of the library
+
+   LIBRARY-SCOPED ROUTINES
+       H5_init_library      -- initialize the HDF5 library
+       H5_term_library      -- shut-down the HDF5 library
+       H5_init_thread       -- initialize thread-specific information
+
+   LOCAL ROUTINES
+       H5_init_interface    -- initialize the H5 interface
+   + */
+
+#define HDF5_MASTER
+#include "hdf5.h"
+#undef HDF5_MASTER
+
+/* private headers */
+#include "H5ACprivate.h"		/*cache				*/
+#include "H5Bprivate.h"			/*B-link trees			*/
+#include "H5private.h"			/* Generic info */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*------------------_-- Local function prototypes ----------------------------*/
+static herr_t H5_init_interface(void);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5_init_library -- Initialize library-global information
+USAGE
+    herr_t H5_init_library()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any library-global data or routines.
+
+--------------------------------------------------------------------------*/
+herr_t H5_init_library(void)
+{
+    CONSTR(FUNC, "H5_init_library");	/* For HERROR */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5_mask, ID_H5_init_library);
+
+    /* Don't call this routine again... */
+    library_initialize = TRUE;
+
+    /* Install atexit() library cleanup routine */
+    if(install_atexit==TRUE)
+        if (HDatexit(&H5_term_library) != 0)
+          HGOTO_ERROR(H5E_FUNC, H5E_CANTINIT, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    FUNC_LEAVE(H5_mask, ID_H5_init_library,ret_value);
+}	/* H5_init_library */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5_term_library
+ PURPOSE
+    Terminate various static buffers and shutdown the library.
+ USAGE
+    void HPend()
+ RETURNS
+    none
+ DESCRIPTION
+    Walk through the shutdown routines for the various interfaces and 
+    terminate them all.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+    Should only ever be called by the "atexit" function, or real power-users.
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+void H5_term_library(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5_term_library");    /* for HERROR */
+#endif /* LATER */
+
+} /* end H5_term_library() */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5_init_thread -- Initialize thread-specific information
+USAGE
+    void H5_init_thread()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any thread-specific data or routines.
+
+--------------------------------------------------------------------------*/
+herr_t H5_init_thread(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5_init_thread");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5_mask, ID_H5_init_thread);
+
+    /* Don't call this routine again... */
+    thread_initialize = TRUE;
+
+
+    /* Create/initialize this thread's error stack */
+    if((thrderrid=H5Enew_err_stack(16))==FAIL)
+        ret_value=FAIL;
+
+    FUNC_LEAVE(H5_mask, ID_H5_init_thread, ret_value);
+}	/* H5_init_thread */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5_mask, ID_H5_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    FUNC_LEAVE(H5_mask, ID_H5_init_interface, ret_value);
+}	/* H5_init_interface */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5dont_atexit
+ PURPOSE
+    Indicates to the library that an 'atexit()' routine is _not_ to be installed
+ USAGE
+    herr_t H5dont_atexit(void)
+ RETURNS
+    Returns SUCCEED/FAIL
+ DESCRIPTION
+        This routine indicates to the library that an 'atexit()' cleanip routine
+    should not be installed.  The major (only?) purpose for this is in
+    situations where the library is dynamically linked into an application and
+    is un-linked from the application before 'exit()' gets callled.  In those
+    situations, a routine installed with 'atexit()' would jump to a routine
+    which was no longer in memory, causing errors.
+        In order to be effective, this routine _must_ be called before any other
+    HDF function calls, and must be called each time the library is loaded/
+    linked into the application. (the first time and after it's been un-loaded) 
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+    If this routine is used, certain memory buffers will not be de-allocated,
+    although in theory a user could call HPend on their own...
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+herr_t H5dont_atexit(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5dont_atexit");    /* for HERROR */
+#endif /* LATER */
+    intn        ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, we are trying to avoid certain initialization code */
+    PABLO_TRACE_ON(H5_mask, ID_H5dont_atexit);
+
+    if(install_atexit == TRUE)
+        install_atexit=FALSE;
+
+#ifdef LATER
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+#endif /* LATER */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5_mask, ID_H5dont_atexit,ret_value);
+} /* end H5dont_atexit() */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5version -- Checks the version of the library
+USAGE
+   herr_t H5version(majnum, minnum, relnum, patnum)
+   uintn *majnum;   OUT: The major revision number of the HDF5 library
+   uintn *minnum;   OUT: The minor revision number of the HDF5 library
+   uintn *relnum;   OUT: The release revision number of the HDF5 library
+   uintn *patnum;   OUT: The patch revision number of the HDF5 library
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Checks the version numbers of the library.
+
+--------------------------------------------------------------------------*/
+herr_t H5version(uintn *majnum, uintn *minnum, uintn *relnum, uintn *patnum)
+{
+    CONSTR(FUNC, "H5version");	/* For HERROR */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5_mask, ID_H5version, H5_init_interface,FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if (majnum==NULL || minnum==NULL || relnum==NULL || patnum==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* Set the version information */
+    *majnum=HDF5_MAJOR_VERSION;
+    *minnum=HDF5_MINOR_VERSION;
+    *relnum=HDF5_RELEASE_VERSION;
+    *patnum=HDF5_PATCH_VERSION;
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5_mask, ID_H5version, ret_value);
+}	/* H5version */
+
diff --git a/src/H5A.c b/src/H5A.c
new file mode 100644
index 0000000..3733bf8
--- /dev/null
+++ b/src/H5A.c
@@ -0,0 +1,789 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*
+FILE
+    atom.c - Internal storage routines for handling "atoms"
+
+REMARKS
+    Atoms are just ID's which allow objects (void *'s currently) to be
+    bundled into "groups" for more general storage.
+
+DESIGN
+    The groups are stored in an array of pointers to store each group in an
+    element. Each "atomic group" node contains a link to a hash table to
+    manage the atoms in each group.  The allowed "atomic groups" are stored
+    in an enum (called group_t) in atom.h.
+
+BUGS/LIMITATIONS
+    Can't interate over the atoms in a group.
+
+LOCAL ROUTINES
+  H5A_find_atom      - Returns a pointer to an atom_info_t from a atom ID
+  H5A_get_atom_node  - Gets an atom node (uses the atom free list)
+  H5A_release_atom_node - Releases an atom node (uses the atom free list)
+EXPORTED ROUTINES
+ Atom Functions:
+  H5Aregister_atom   - Register an object in a group and get an atom for it
+  H5Aatom_object     - Get the object for an atom
+  H5Aatom_group      - Get the group for an atom
+  H5Aremove_atom     - Remove an atom from a group
+  H5Asearch_atom     - Search a group for a particular object
+  H5Ais_reserved     - Check whether an atom is a reserved atom in a group
+ Atom Group Functions:
+  H5Ainit_group      - Initialize a group to store atoms in
+  H5Adestroy_group   - Destroy an atomic group
+ Atom Group Cleanup:
+  H5Ashutdown        - Terminate various static buffers.
+
+AUTHOR
+   Quincey Koziol
+
+MODIFICATION HISTORY
+   1/3/96  - Starting writing specs & coding prototype
+   1/7/96  - Finished coding prototype
+   6/10/97 - Moved into HDF5 library
+*/
+
+#define HDF5_ATOM_MASTER
+#include "hdf5.h"
+#include "H5Aprivate.h"
+
+
+/* Private function prototypes */
+static atom_info_t *H5A_find_atom(hatom_t atm);
+
+static atom_info_t *H5A_get_atom_node(void);
+
+static void H5A_release_atom_node(atom_info_t *atm);
+
+/******************************************************************************
+ NAME
+     H5Ainit_group - Initialize an atomic group
+
+ DESCRIPTION
+    Creates a global atomic group to store atoms in.  If the group has already
+    been initialized, this routine just increments the count of # of
+    initializations and returns without trying to change the size of the hash
+    table.  A specific number of group entries may be reserved to enable
+    "constant" values to be handed out which are valid atoms in the group, but
+    which do not map to any data structures and are not allocated dynamicly
+    later.
+
+ RETURNS
+    Returns SUCCEED if successful and FAIL otherwise
+
+*******************************************************************************/
+intn H5Ainit_group(group_t grp,      /* IN: Group to initialize */
+    intn hash_size,                 /* IN: Minimum hash table size to use for group */
+    uintn reserved                  /* IN: Number of hash table entries to reserve */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Ainit_group");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    intn ret_value=SUCCEED;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Ainit_group);
+
+    if((grp<=BADGROUP || grp>=MAXGROUP) && hash_size>0)
+        HGOTO_DONE(FAIL);
+
+#ifdef HASH_SIZE_POWER_2
+    /* If anyone knows a faster test for a power of two, please change this silly code -QAK */
+    if(!(hash_size==2 || hash_size==4 || hash_size==8 || hash_size==16
+            || hash_size==32 || hash_size==64 || hash_size==128 || hash_size==256
+            || hash_size==512 || hash_size==1024 || hash_size==2048
+            || hash_size==4096 || hash_size==8192 || hash_size==16374
+            || hash_size==32768 || hash_size==65536 || hash_size==131072
+            || hash_size==262144 || hash_size==524288 || hash_size==1048576
+            || hash_size==2097152 || hash_size==4194304 || hash_size==8388608
+            || hash_size==16777216 || hash_size==33554432 || hash_size==67108864
+            || hash_size==134217728 || hash_size==268435456))
+        HGOTO_DONE(FAIL);
+#endif /* HASH_SIZE_POWER_2 */
+
+    if(atom_group_list[grp]==NULL)
+      {     /* Allocate the group information */
+          grp_ptr=(atom_group_t *)HDcalloc(1,sizeof(atom_group_t));
+          if(grp_ptr==NULL)
+              HGOTO_DONE(FAIL);
+          atom_group_list[grp]=grp_ptr;
+      } /* end if */
+    else /* Get the pointer to the existing group */
+        grp_ptr=atom_group_list[grp];
+
+    if(grp_ptr->count==0)
+      {     /* Initialize the atom group structure */
+        grp_ptr->hash_size=hash_size;
+        grp_ptr->reserved=reserved;
+        grp_ptr->wrapped=0;
+        grp_ptr->atoms=0;
+        grp_ptr->nextid=0;
+        if((grp_ptr->atom_list=(atom_info_t **)HDcalloc(hash_size,sizeof(atom_info_t *)))==NULL)
+            HGOTO_DONE(FAIL);
+      } /* end if */
+
+    /* Increment the count of the times this group has been initialized */
+    grp_ptr->count++;
+
+#ifdef QAK
+printf("%s: group ID=%d, count=%d, current # of active atoms=%d\n",FUNC,grp,grp_ptr->count,grp_ptr->atoms);
+#endif /* QAK */
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+        if(grp_ptr!=NULL)
+          {
+            if(grp_ptr->atom_list!=NULL)
+                HDfree(grp_ptr->atom_list);
+            HDfree(grp_ptr);
+          } /* end if */
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Ainit_group, ret_value);
+}   /* end H5Ainit_group() */
+
+/******************************************************************************
+ NAME
+     H5Adestroy_group - Destroy an atomic group
+
+ DESCRIPTION
+    Destroys an atomic group which atoms are stored in.  If the group still
+    has atoms which are registered, this routine fails.  If there have been
+    multiple initializations of the group, this routine just decrements the
+    count of initializations and does not check the atoms out-standing.
+
+ RETURNS
+    Returns SUCCEED if successful and FAIL otherwise
+
+*******************************************************************************/
+intn H5Adestroy_group(group_t grp       /* IN: Group to destroy */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Adestroy_group");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    intn ret_value=SUCCEED;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Adestroy_group);
+
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(FAIL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL || grp_ptr->count<=0)
+        HGOTO_DONE(FAIL);
+
+#ifdef QAK
+printf("%s: group ID=%d, count=%d, current # of active atoms=%d\n",FUNC,grp,grp_ptr->count,grp_ptr->atoms);
+#endif /* QAK */
+    /* Decrement the number of users of the atomic group */
+    if((--(grp_ptr->count))==0)
+      {
+#ifdef ATOMS_ARE_CACHED
+      {
+        uintn i;
+
+        for(i=0; i<ATOM_CACHE_SIZE; i++)
+            if(ATOM_TO_GROUP(atom_id_cache[i])==grp)
+              {
+                atom_id_cache[i]=(-1);
+                atom_obj_cache[i]=NULL;
+              } /* end if */
+      } /* end block */
+#endif /* ATOMS_ARE_CACHED */
+        HDfree(grp_ptr->atom_list);
+      } /* end if */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Adestroy_group, ret_value);
+}   /* end H5Adestroy_group() */
+
+/******************************************************************************
+ NAME
+     H5Aregister_atom - Register an object in a group and get an atom for it.
+
+ DESCRIPTION
+    Registers an object in a group and returns an atom for it.  This routine
+    does _not_ check for unique-ness of the objects, if you register an object
+    twice, you will get two different atoms for it.  This routine does make
+    certain that each atom in a group is unique.  Atoms are created by getting
+    a unique number for the group the atom is in and incorporating the group
+    into the atom which is returned to the user.
+
+ RETURNS
+    Returns atom if successful and FAIL otherwise
+
+*******************************************************************************/
+hatom_t H5Aregister_atom(group_t grp,     /* IN: Group to register the object in */
+    const VOIDP object                    /* IN: Object to attach to atom */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Aregister_atom");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    atom_info_t *atm_ptr=NULL;      /* ptr to the new atom */
+    hatom_t atm_id;                  /* new atom ID */
+    uintn hash_loc;                 /* new item's hash table location */
+    hatom_t ret_value=SUCCEED;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Aregister_atom);
+
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(FAIL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL || grp_ptr->count<=0)
+        HGOTO_DONE(FAIL);
+
+    if((atm_ptr=H5A_get_atom_node())==NULL)
+        HGOTO_DONE(FAIL);
+
+    /* Create the atom & it's ID */
+    atm_id=MAKE_ATOM(grp,grp_ptr->nextid);
+    atm_ptr->id=atm_id;
+    atm_ptr->obj_ptr=object;
+    atm_ptr->next=NULL;
+
+    /* hash bucket already full, prepend to front of chain */
+    hash_loc=grp_ptr->nextid%(uintn)grp_ptr->hash_size;
+    if(grp_ptr->atom_list[hash_loc]!=NULL)
+        atm_ptr->next=grp_ptr->atom_list[hash_loc];
+
+    /* Insert into the group */
+    grp_ptr->atom_list[hash_loc]=atm_ptr;
+    grp_ptr->atoms++;
+    grp_ptr->nextid++;
+
+    /*
+     * This next section of code checks for the 'nextid' getting too large and
+     * wrapping around, thus necessitating checking for duplicate atoms being
+     * handed out.
+     */
+    if(grp_ptr->nextid>(uintn)ATOM_MASK || grp_ptr->wrapped!=0)
+      {
+        if(grp_ptr->wrapped==0)
+          {
+            grp_ptr->wrapped=1;       /* set the "wrapped around" flag if it isn't already */
+            grp_ptr->nextid=grp_ptr->reserved;    /* re-start the ID counter */
+          } /* end if */
+        do {
+            hatom_t next_atom=MAKE_ATOM(grp,grp_ptr->nextid);      /* new atom to check for */
+            atom_info_t *curr_atm;  /* ptr to the current atom */
+
+            curr_atm=grp_ptr->atom_list[(uintn)ATOM_TO_LOC(grp_ptr->nextid,grp_ptr->hash_size)];
+            if(curr_atm==NULL)    /* Ha! this is not likely... */
+                break;
+
+            while(curr_atm!=NULL)
+              {
+                  if(curr_atm->id==next_atom)
+                      break;
+                  curr_atm=curr_atm->next;
+              } /* end while */
+            if(curr_atm==NULL)    /* must not have found a match */
+                break;
+            grp_ptr->nextid++;
+         } while(grp_ptr->nextid<=(uintn)ATOM_MASK);
+        if(grp_ptr->nextid>(uintn)ATOM_MASK)  /* All the atoms are gone! */
+            HGOTO_DONE(FAIL);
+      } /* end if */
+
+    ret_value=atm_id;
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Aregister_atom, ret_value);
+}   /* end H5Aregister_atom() */
+
+/******************************************************************************
+ NAME
+     H5Aatom_object - Returns to the object ptr for the atom 
+
+ DESCRIPTION
+    Retrieves the object ptr which is associated with the atom.
+
+ RETURNS
+    Returns object ptr if successful and NULL otherwise
+
+*******************************************************************************/
+VOIDP H5Aatom_object(hatom_t atm   /* IN: Atom to retrieve object for */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Aatom_object");	/* for HERROR */
+#endif /* LATER */
+#ifdef ATOMS_ARE_CACHED
+    uintn i;                        /* local counter */
+#endif /* ATOMS_ARE_CACHED */
+    atom_info_t *atm_ptr=NULL;      /* ptr to the new atom */
+    VOIDP ret_value=NULL;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Aatom_object);
+
+#ifdef ATOMS_ARE_CACHED
+    /* Look for the atom in the cache first */
+    for(i=0; i<ATOM_CACHE_SIZE; i++)
+        if(atom_id_cache[i]==atm)
+          {
+            ret_value=atom_obj_cache[i];
+            if(i>0)
+              { /* Implement a simple "move forward" caching scheme */
+                hatom_t t_atom=atom_id_cache[i-1];
+                VOIDP  t_obj=atom_obj_cache[i-1];
+
+                atom_id_cache[i-1]=atom_id_cache[i];
+                atom_obj_cache[i-1]=atom_obj_cache[i];
+                atom_id_cache[i]=t_atom;
+                atom_obj_cache[i]=t_obj;
+              } /* end if */
+            HGOTO_DONE(ret_value);
+          } /* end if */
+#endif /* ATOMS_ARE_CACHED */
+
+    /* General lookup of the atom */
+    if((atm_ptr=H5A_find_atom(atm))==NULL)
+        HGOTO_DONE(NULL);
+
+    /* Check if we've found the correct atom */
+    if(atm_ptr!=NULL)
+        ret_value=atm_ptr->obj_ptr;
+
+done:
+  if(ret_value == NULL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Aatom_object, ret_value);
+}   /* end H5Aatom_object() */
+
+/******************************************************************************
+ NAME
+     H5Aatom_group - Returns to the group for the atom 
+
+ DESCRIPTION
+    Retrieves the group which is associated with the atom.
+
+ RETURNS
+    Returns group if successful and BADGROUP otherwise
+
+*******************************************************************************/
+group_t H5Aatom_group(hatom_t atm   /* IN: Atom to retrieve group for */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Aatom_group");	/* for HERROR */
+#endif /* LATER */
+    group_t ret_value=BADGROUP;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Aatom_group);
+
+    ret_value=ATOM_TO_GROUP(atm);
+    if(ret_value<=BADGROUP || ret_value>=MAXGROUP)
+        HGOTO_DONE(BADGROUP);
+
+done:
+  if(ret_value == BADGROUP)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Aatom_group, ret_value);
+}   /* end H5Aatom_group() */
+
+/******************************************************************************
+ NAME
+     H5Aremove_atom - Removes an atom from a group
+
+ DESCRIPTION
+    Removes an atom from a group.
+
+ RETURNS
+    Returns atom's object if successful and NULL otherwise
+
+*******************************************************************************/
+VOIDP H5Aremove_atom(hatom_t atm   /* IN: Atom to remove */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Aremove_atom");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    atom_info_t *curr_atm,          /* ptr to the current atom */
+        *last_atm;                  /* ptr to the last atom */
+    group_t grp;                    /* atom's atomic group */
+    uintn hash_loc;                 /* atom's hash table location */
+#ifdef ATOMS_ARE_CACHED
+    uintn i;                        /* local counting variable */
+#endif /* ATOMS_ARE_CACHED */
+    VOIDP ret_value=NULL;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Aremove_atom);
+
+    grp=ATOM_TO_GROUP(atm);
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(NULL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL || grp_ptr->count<=0)
+        HGOTO_DONE(NULL);
+
+    /* Get the location in which the atom is located */
+    hash_loc=(uintn)ATOM_TO_LOC(atm,grp_ptr->hash_size);
+    curr_atm=grp_ptr->atom_list[hash_loc];
+    if(curr_atm==NULL)
+        HGOTO_DONE(NULL);
+
+    last_atm=NULL;
+    while(curr_atm!=NULL)
+      {
+          if(curr_atm->id==atm)
+              break;
+          last_atm=curr_atm;
+          curr_atm=curr_atm->next;
+      } /* end while */
+
+    if(curr_atm!=NULL)
+      {
+          if(last_atm==NULL)    /* atom is the first the chain */
+              grp_ptr->atom_list[hash_loc]=curr_atm->next;
+          else
+              last_atm->next=curr_atm->next;
+          ret_value=curr_atm->obj_ptr;
+          H5A_release_atom_node(curr_atm);
+      } /* end if */
+    else    /* couldn't find the atom in the proper place */
+        HGOTO_DONE(NULL);
+    
+#ifdef ATOMS_ARE_CACHED
+    /* Delete object from cache */
+    for(i=0; i<ATOM_CACHE_SIZE; i++)
+        if(atom_id_cache[i]==atm)
+          {
+            atom_id_cache[i]=(-1);
+            atom_obj_cache[i]=NULL;
+            break;  /* we assume there is only one instance in the cache */
+          } /* end if */
+#endif /* ATOMS_ARE_CACHED */
+
+    /* Decrement the number of atoms in the group */
+    (grp_ptr->atoms)--;
+
+done:
+  if(ret_value == NULL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Aremove_atom, ret_value);
+}   /* end H5Aremove_atom() */
+
+/******************************************************************************
+ NAME
+     H5Asearch_atom - Search for an object in a group and get it's pointer.
+
+ DESCRIPTION
+    Searchs for an object in a group and returns the pointer to it.
+    This routine calls the function pointer passed in for each object in the
+    group until it finds a match.  Currently there is no way to resume a
+    search.
+
+ RETURNS
+    Returns pointer an atom's object if successful and NULL otherwise
+
+*******************************************************************************/
+VOIDP H5Asearch_atom(group_t grp,        /* IN: Group to search for the object in */
+    H5Asearch_func_t func,               /* IN: Ptr to the comparison function */
+    const VOIDP key                     /* IN: pointer to key to compare against */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Asearch_atom");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    atom_info_t *atm_ptr=NULL;      /* ptr to the new atom */
+    intn i;                         /* local counting variable */
+    VOIDP ret_value=NULL;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Asearch_atom);
+
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(NULL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL || grp_ptr->count<=0)
+        HGOTO_DONE(NULL);
+
+    /* Start at the beginning of the array */
+    for(i=0; i<grp_ptr->hash_size; i++)
+      {
+        atm_ptr=grp_ptr->atom_list[i];
+        while(atm_ptr!=NULL)
+          {
+              if((*func)(atm_ptr->obj_ptr,key))
+                  HGOTO_DONE(atm_ptr->obj_ptr); /* found the item we are looking for */
+              atm_ptr=atm_ptr->next;
+          } /* end while */
+      } /* end for */
+
+done:
+  if(ret_value == NULL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Asearch_atom, ret_value);
+}   /* end H5Asearch_atom() */
+
+/******************************************************************************
+ NAME
+     H5Ais_reserved - Check whether an atom is a reserved atom in a group
+
+ DESCRIPTION
+    Determines the group an atom belongs to and checks if the atom is a
+    reserved atom in the group.
+
+ RETURNS
+    Returns BTRUE/BFALSE/BFAIL
+
+*******************************************************************************/
+intn H5Ais_reserved(hatom_t atm      /* IN: Group to search for the object in */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5Ais_reserved");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    group_t grp;                    /* atom's atomic group */
+    hbool_t ret_value=BFAIL;
+
+    PABLO_TRACE_ON(H5A_mask, ID_H5Ais_reserved);
+
+    grp=ATOM_TO_GROUP(atm);
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(BFAIL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL)
+        HGOTO_DONE(BFAIL);
+
+    /* Get the location in which the atom is located */
+    if((atm&ATOM_MASK)<grp_ptr->reserved)
+        ret_value=BTRUE;
+    else
+        ret_value=BFALSE;
+
+done:
+  if(ret_value == BFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5A_mask, ID_H5Ais_reserved, ret_value);
+}   /* end H5Ais_reserved() */
+
+/******************************************************************************
+ NAME
+     H5A_find_atom - Finds a atom in a group
+
+ DESCRIPTION
+    Retrieves the atom ptr which is associated with the atom.
+
+ RETURNS
+    Returns atom ptr if successful and NULL otherwise
+
+*******************************************************************************/
+static atom_info_t *H5A_find_atom(hatom_t atm   /* IN: Atom to retrieve atom for */
+)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5A_find_atom");	/* for HERROR */
+#endif /* LATER */
+    atom_group_t *grp_ptr=NULL;     /* ptr to the atomic group */
+    atom_info_t *atm_ptr=NULL;      /* ptr to the new atom */
+    group_t grp;                    /* atom's atomic group */
+    uintn hash_loc;                 /* atom's hash table location */
+    atom_info_t *ret_value=NULL;
+
+
+    grp=ATOM_TO_GROUP(atm);
+    if(grp<=BADGROUP || grp>=MAXGROUP)
+        HGOTO_DONE(NULL);
+
+    grp_ptr=atom_group_list[grp];
+    if(grp_ptr==NULL || grp_ptr->count<=0)
+        HGOTO_DONE(NULL);
+
+    /* Get the location in which the atom is located */
+    hash_loc=(uintn)ATOM_TO_LOC(atm,grp_ptr->hash_size);
+    atm_ptr=grp_ptr->atom_list[hash_loc];
+    if(atm_ptr==NULL)
+        HGOTO_DONE(NULL);
+
+    while(atm_ptr!=NULL)
+      {
+          if(atm_ptr->id==atm)
+              break;
+          atm_ptr=atm_ptr->next;
+      } /* end while */
+    ret_value=atm_ptr;
+
+#ifdef ATOMS_ARE_CACHED
+    atom_id_cache[ATOM_CACHE_SIZE-1]=atm;
+    atom_obj_cache[ATOM_CACHE_SIZE-1]=atm_ptr->obj_ptr;
+#endif /* ATOMS_ARE_CACHED */
+
+done:
+  if(ret_value == NULL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+  /* Normal function cleanup */
+
+  return ret_value;
+}   /* end H5A_find_atom() */
+
+/******************************************************************************
+ NAME
+     H5A_get_atom_node - Gets an atom node
+
+ DESCRIPTION
+    Either gets an atom node from the free list (if there is one available)
+    or allocate a node.
+
+ RETURNS
+    Returns atom ptr if successful and NULL otherwise
+
+*******************************************************************************/
+static atom_info_t *H5A_get_atom_node(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5A_get_atom_node");	/* for HERROR */
+#endif /* LATER */
+    atom_info_t *ret_value=NULL;
+
+    if(atom_free_list!=NULL)
+      {
+        ret_value=atom_free_list;
+        atom_free_list=atom_free_list->next;
+      } /* end if */
+    else
+      {
+        if((ret_value=(atom_info_t *)HDmalloc(sizeof(atom_info_t)))==NULL)
+            HGOTO_DONE(NULL);
+      } /* end else */
+
+done:
+  if(ret_value == NULL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+  /* Normal function cleanup */
+
+  return ret_value;
+}   /* end H5A_get_atom_node() */
+
+/******************************************************************************
+ NAME
+     H5A_release_atom_node - Releases an atom node
+
+ DESCRIPTION
+    Puts an atom node into the free list
+
+ RETURNS
+    No return value
+
+*******************************************************************************/
+static void H5A_release_atom_node(atom_info_t *atm)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5A_release_atom_node");	/* for HERROR */
+#endif /* LATER */
+
+    /* Insert the atom at the beginning of the free list */
+    atm->next=atom_free_list;
+    atom_free_list=atm;
+}   /* end H5A_release_atom_node() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Ashutdown
+ PURPOSE
+    Terminate various static buffers.
+ USAGE
+    intn H5Ashutdown()
+ RETURNS
+    Returns SUCCEED/FAIL
+ DESCRIPTION
+    Free various buffers allocated in the H5A routines.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+    Should only ever be called by the "atexit" function HDFend
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+intn 
+H5Ashutdown(void)
+{
+    atom_info_t *curr;
+    intn i;
+
+    /* Release the free-list if it exists */
+    if(atom_free_list!=NULL)
+      {
+        while(atom_free_list!=NULL)
+          {
+            curr=atom_free_list;
+            atom_free_list=atom_free_list->next;
+            HDfree(curr);
+          } /* end while */
+      } /* end if */
+
+    for(i=0; i<(intn)MAXGROUP; i++)
+        if(atom_group_list[i]!=NULL)
+          {
+            HDfree(atom_group_list[i]);
+            atom_group_list[i]=NULL;
+          } /* end if */
+  return (SUCCEED);
+}	/* end H5Ashutdown() */
+
diff --git a/src/H5AC.c b/src/H5AC.c
new file mode 100644
index 0000000..a0123b1
--- /dev/null
+++ b/src/H5AC.c
@@ -0,0 +1,315 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		hdf5cache.c
+ * 			Jul  9 1997
+ * 			Robb Matzke <matzke@llnl.gov>
+ *
+ * Purpose:		Functions in this file implement a cache for
+ *			things which exist on disk.  All "things" associated
+ *			with a particular HDF file share the same cache; each
+ *			HDF file has it's own cache.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+#include "hdf5.h"
+
+#include "H5ACprivate.h"
+
+#define HASH(addr)	((unsigned)(addr) % H5AC_NSLOTS)
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_new
+ *
+ * Purpose:	Initialize the cache just after a file is opened.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_new (hdf5_file_t *f)
+{
+   f->cache = HDcalloc (H5AC_NSLOTS, sizeof (H5AC_cache_t));
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_dest
+ *
+ * Purpose:	Flushes all data to disk and destroys the cache.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_dest (hdf5_file_t *f)
+{
+   if (H5AC_flush (f, NULL, 0, TRUE)<0) return -1;
+   HDfree (f->cache);
+   return 0;
+}
+   
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_find
+ *
+ * Purpose:	Given an object type and the address at which that object
+ *		is located in the file, return a pointer to the object.
+ *		The optional UDATA structure is passed down to the function
+ *		that is responsible for loading the object into memory.
+ *
+ * Return:	Success:	Pointer to the object.  The pointer is
+ *				valid until some other cache function
+ *				is called.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5AC_find (hdf5_file_t *f, const H5AC_class_t *type, off_t addr,
+	   const void *udata)
+{
+   unsigned	idx = HASH(addr);
+   herr_t	status;
+   void		*thing = NULL;
+   herr_t	(*flush)(hdf5_file_t*,hbool_t,off_t,void*)=NULL;
+
+   assert (type);
+   assert (type->load);
+   assert (type->flush);
+
+   /*
+    * Return right away if the item is in the cache.
+    */
+   if (f->cache[idx].type==type && f->cache[idx].addr==addr) {
+      return f->cache[idx].thing;
+   }
+
+   /*
+    * Load a new thing.  If it can't be loaded, then return an error
+    * without preempting anything.
+    */
+   if (NULL==(thing=(type->load)(f, addr, udata))) {
+      return NULL;
+   }
+
+   /*
+    * Free the previous cache entry if there is one.
+    */
+   if (f->cache[idx].type) {
+      flush = f->cache[idx].type->flush;
+      status = (flush)(f, TRUE, f->cache[idx].addr, f->cache[idx].thing);
+      if (status<0) {
+	 /*
+	  * The old thing could not be removed from the stack.
+	  * Release the new thing and fail.
+	  */
+	 status = (type->flush)(f, TRUE, addr, thing);
+	 assert (status>=0);
+	 return NULL;
+      }
+   }
+
+   /*
+    * Make the cache point to the new thing.
+    */
+   f->cache[idx].type = type;
+   f->cache[idx].addr = addr;
+   f->cache[idx].thing = thing;
+
+   return thing;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_flush
+ *
+ * Purpose:	Flushes (and destroys if DESTROY is non-zero) the specified
+ *		entry from the cache.  If the entry type is CACHE_FREE then
+ *		all types of entries are flushed.  If the ADDR is zero then
+ *		all entries of the specified type are flushed.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_flush (hdf5_file_t *f, const H5AC_class_t *type, off_t addr,
+	    hbool_t destroy)
+{
+   uintn	i = HASH(addr);
+   herr_t	status;
+   herr_t	(*flush)(hdf5_file_t*,hbool_t,off_t,void*)=NULL;
+
+   if (!type || 0==addr) {
+      /*
+       * Look at all cache entries.
+       */
+      for (i=0; i<H5AC_NSLOTS; i++) {
+	 if (NULL==f->cache[i].type) continue;
+	 if ((!type || type==f->cache[i].type) &&
+	     (0==addr || addr==f->cache[i].addr)) {
+	    flush = f->cache[i].type->flush;
+	    status = (flush)(f, destroy, f->cache[i].addr,
+			     f->cache[i].thing);
+	    if (status<0) return -1;
+	    if (destroy) f->cache[i].type = NULL;
+	 }
+      }
+
+   } else if (f->cache[i].type==type && f->cache[i].addr==addr) {
+      /*
+       * Flush just this entry.
+       */
+      flush = f->cache[i].type->flush;
+      status =  (flush) (f, destroy, f->cache[i].addr, f->cache[i].thing);
+      if (status<0) return -1;
+      if (destroy) f->cache[i].type = NULL;
+
+   }
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_set
+ *
+ * Purpose:	Adds the specified thing to the cache.  The thing need not
+ *		exist on disk yet, but it must have an address and disk
+ *		space reserved.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_set (hdf5_file_t *f, const H5AC_class_t *type, off_t addr, void *thing)
+{
+   herr_t	status;
+   uintn	idx = HASH (addr);
+   herr_t	(*flush)(hdf5_file_t*,hbool_t,off_t,void*)=NULL;
+
+   assert (type);
+   assert (type->flush);
+
+   if (f->cache[idx].type) {
+      flush = f->cache[idx].type->flush;
+      status = (flush)(f, TRUE, f->cache[idx].addr, f->cache[idx].thing);
+      if (status<0) return -1;
+   }
+
+   f->cache[idx].type = type;
+   f->cache[idx].addr = addr;
+   f->cache[idx].thing = thing;
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5AC_rename
+ *
+ * Purpose:	Use this function to notify the cache that an object's
+ *		file address changed.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_rename (hdf5_file_t *f, const H5AC_class_t *type,
+	     off_t old_addr, off_t new_addr)
+{
+   uintn	old_idx = HASH (old_addr);
+   uintn	new_idx = HASH (new_addr);
+   herr_t	(*flush)(hdf5_file_t*, hbool_t, off_t, void*);
+   herr_t	status;
+
+   assert (type);
+
+   if (f->cache[old_idx].type!=type || f->cache[old_idx].addr!=old_addr) {
+      return 0; /*item not in cache*/
+   }
+
+   if (old_idx==new_idx) {
+      f->cache[old_idx].addr = new_addr;
+      return 0;
+   }
+      
+   /*
+    * Free the item from the destination cache line.
+    */
+   if (f->cache[new_idx].type) {
+      flush = f->cache[new_idx].type->flush;
+      status = (flush)(f, TRUE, f->cache[new_idx].addr,
+		       f->cache[new_idx].thing);
+      if (status<0) return -1;
+   }
+
+   /*
+    * Move the source to the destination (it might not be cached)
+    */
+   f->cache[new_idx].type = f->cache[old_idx].type;
+   f->cache[new_idx].addr = new_addr;
+   f->cache[new_idx].thing = f->cache[old_idx].thing;
+   f->cache[old_idx].type = NULL;
+
+   return 0;
+}
+
diff --git a/src/H5ACprivate.h b/src/H5ACprivate.h
new file mode 100644
index 0000000..5dce2cd
--- /dev/null
+++ b/src/H5ACprivate.h
@@ -0,0 +1,71 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5ACprivate.h
+ * 			Jul  9 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Constants and typedefs available to the rest of the
+ *			library.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5ACprivate_H
+#define _H5ACprivate_H
+
+#include "H5ACproto.h"		/*public prototypes			*/
+#include "H5Fprivate.h"		/*for private hdf5_file_t definition 	*/
+
+/*
+ * Class methods pertaining to caching.  Each type of cached object will
+ * have a constant variable with permanent life-span that describes how
+ * to cache the object.  That variable will be of type H5AC_class_t and
+ * have the following required fields...
+ *
+ * LOAD:	Loads an object from disk to memory.  The function
+ *		should allocate some data structure and return it.
+ *
+ * FLUSH:	Writes some data structure back to disk.  It would be
+ *		wise for the data structure to include dirty flags to
+ *		indicate whether it really needs to be written.  This
+ *		function is also responsible for freeing memory allocated
+ *		by the LOAD method if the DEST argument is non-zero.
+ */
+typedef struct H5AC_class_t {
+   void		*(*load)(hdf5_file_t*, off_t addr, const void *udata);
+   herr_t	(*flush)(hdf5_file_t*, hbool_t dest, off_t addr, void *thing);
+} H5AC_class_t;
+
+/*
+ * A cache has a certain number of entries.  Objects are mapped into a
+ * cache entry by hashing the object's file address.  Each file has its
+ * own cache, an array of slots.
+ */
+#define H5AC_NSLOTS	1033	/*prime number tend to work best	*/
+
+typedef struct H5AC_cache_t {
+   const H5AC_class_t *type;	/*type of object stored here		*/
+   off_t	addr;		/*file address for object		*/
+   void		*thing;		/*the thing which is cached		*/
+} H5AC_cache_t;
+
+/*
+ * Library prototypes.
+ */
+herr_t H5AC_dest (hdf5_file_t *f);
+void *H5AC_find (hdf5_file_t *f, const H5AC_class_t *type, off_t addr,
+		 const void *udata);
+herr_t H5AC_flush (hdf5_file_t *f, const H5AC_class_t *type, off_t addr,
+		   hbool_t destroy);
+herr_t H5AC_new (hdf5_file_t *f);
+herr_t H5AC_rename (hdf5_file_t *f, const H5AC_class_t *type,
+		    off_t old, off_t new);
+herr_t H5AC_set (hdf5_file_t *f, const H5AC_class_t *type, off_t addr,
+		 void *thing);
+
+#endif /* !_H5ACprivate_H */
diff --git a/src/H5ACproto.h b/src/H5ACproto.h
new file mode 100644
index 0000000..25218a9
--- /dev/null
+++ b/src/H5ACproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5ACproto.h
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Function prototypes for the H5AC package.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5ACproto_H
+#define _H5ACproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5Aprivate.h b/src/H5Aprivate.h
new file mode 100644
index 0000000..1a2db6f
--- /dev/null
+++ b/src/H5Aprivate.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*-----------------------------------------------------------------------------
+ * File:    atom.h
+ * Purpose: header file for atom API
+ *---------------------------------------------------------------------------*/
+
+/* avoid re-inclusion */
+#ifndef __ATOM_H
+#define __ATOM_H
+
+#include "H5Aproto.h"   /* Include Public Definitions */
+
+/* Atom Features control */
+/* Define the following macro for fast hash calculations (but limited hash sizes) */
+#define HASH_SIZE_POWER_2
+
+/* Define the following macro for atom caching over all the atoms */
+#define ATOMS_ARE_CACHED
+
+#if defined HDF5_ATOM_MASTER | defined HDF5_ATOM_TESTER
+#ifdef ATOMS_ARE_CACHED
+/* # of previous atoms cached */
+#define ATOM_CACHE_SIZE 4
+#endif /* ATOMS_ARE_CACHED */
+
+/* Map an atom to a Group number */
+#define ATOM_TO_GROUP(a)    ((group_t)((((hatom_t)(a))>>((sizeof(hatom_t)*8)-GROUP_BITS))&GROUP_MASK))
+
+#ifdef HASH_SIZE_POWER_2
+/* Map an atom to a hash location (assumes s is a power of 2 and smaller than the ATOM_MASK constant) */
+#define ATOM_TO_LOC(a,s)    ((hatom_t)(a)&((s)-1))
+#else /* HASH_SIZE_POWER_2 */
+/* Map an atom to a hash location */
+#define ATOM_TO_LOC(a,s)    (((hatom_t)(a)&ATOM_MASK)%(s))
+#endif /* HASH_SIZE_POWER_2 */
+
+/* Atom information structure used */
+typedef struct atom_info_struct_tag {
+    hatom_t id;              /* atom ID for this info */
+    VOIDP *obj_ptr;         /* pointer associated with the atom */
+    struct atom_info_struct_tag *next;   /* link to next atom (in case of hash-clash) */
+  }atom_info_t;
+
+/* Atom group structure used */
+typedef struct atom_group_struct_tag {
+    uintn count;            /* # of times this group has been initialized */
+    uintn reserved;         /* # of atoms to reserve for constant atoms */
+    uintn wrapped;          /* whether the id count has wrapped around */
+    intn hash_size;         /* size of the hash table to store the atoms in */
+    uintn atoms;            /* current number of atoms held */
+    uintn nextid;           /* atom ID to use for the next atom */
+    atom_info_t **atom_list;/* pointer to an array of ptrs to atoms */
+  }atom_group_t;
+
+/* Define this in only one place */
+#ifdef HDF5_ATOM_MASTER
+
+/* Array of pointers to atomic groups */
+static atom_group_t *atom_group_list[MAXGROUP]={NULL};
+
+/* Pointer to the atom node free list */
+static atom_info_t *atom_free_list=NULL;
+
+#ifdef ATOMS_ARE_CACHED
+/* Array of pointers to atomic groups */
+static hatom_t atom_id_cache[ATOM_CACHE_SIZE]={-1,-1,-1,-1};
+static VOIDP atom_obj_cache[ATOM_CACHE_SIZE]={NULL};
+#endif /* ATOMS_ARE_CACHED */
+
+#endif /* HDF5_ATOM_MASTER */
+
+/* Useful routines for generally private use */
+
+#endif /* HDF5_ATOM_MASTER | HDF5_ATOM_TESTER */
+
+#endif /* __ATOM_H */
+
diff --git a/src/H5Aproto.h b/src/H5Aproto.h
new file mode 100644
index 0000000..2bf2ba5
--- /dev/null
+++ b/src/H5Aproto.h
@@ -0,0 +1,204 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5A module
+ */
+
+#ifndef H5APROTO_H
+#define H5APROTO_H
+
+/* Group values allowed */
+typedef enum {BADGROUP=(-1),    /* Invalid Group */
+H5_ERR=0,                       /* Group ID for Error stack objects */
+H5_FILE,                        /* Group ID for File objects */
+H5_TEMPLATE,                    /* Group ID for Template objects */
+H5_DATATYPE,                    /* Group ID for Datatype objects */
+H5_DATASPACE,                   /* Group ID for Dataspace objects */
+MAXGROUP                    /* Highest group in group_t (Invalid as true group) */
+} group_t;
+
+/* Type of atoms to return to users */
+typedef int32 hatom_t;
+
+/* Type of the function to compare objects & keys */
+typedef intn (*H5Asearch_func_t)(const VOIDP obj, const VOIDP key);
+
+/* # of bits to use for Group ID in each atom (change if MAXGROUP>16) */
+#define GROUP_BITS  4
+#define GROUP_MASK  0x0F
+
+/* # of bits to use for the Atom index in each atom (assumes 8-bit bytes) */
+#define ATOM_BITS   ((sizeof(hatom_t)*8)-GROUP_BITS)
+#define ATOM_MASK   0x0FFFFFFF
+
+/* Combine a Group number and an atom index into an atom */
+#define MAKE_ATOM(g,i)      ((((hatom_t)(g)&GROUP_MASK)<<((sizeof(hatom_t)*8)-GROUP_BITS))|((hatom_t)(i)&ATOM_MASK))
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5A.c */
+/******************************************************************************
+ NAME
+     H5Ainit_group - Initialize an atomic group
+
+ DESCRIPTION
+    Creates an atomic group to store atoms in.  If the group has already been
+    initialized, this routine just increments the count of # of initializations
+    and returns without trying to change the size of the hash table.
+
+ RETURNS
+    Returns SUCCEED if successful and FAIL otherwise
+
+*******************************************************************************/
+intn H5Ainit_group(group_t grp,      /* IN: Group to initialize */
+    intn hash_size,                 /* IN: Minimum hash table size to use for group */
+    uintn reserved                  /* IN: Number of hash table entries to reserve */
+);
+
+/******************************************************************************
+ NAME
+     H5Adestroy_group - Destroy an atomic group
+
+ DESCRIPTION
+    Destroys an atomic group which atoms are stored in.  If the group still
+    has atoms which are registered, this routine fails.  If there have been
+    multiple initializations of the group, this routine just decrements the
+    count of initializations and does not check the atoms out-standing.
+
+ RETURNS
+    Returns SUCCEED if successful and FAIL otherwise
+
+*******************************************************************************/
+intn H5Adestroy_group(group_t grp       /* IN: Group to destroy */
+);
+
+/******************************************************************************
+ NAME
+     H5Aregister_atom - Register an object in a group and get an atom for it.
+
+ DESCRIPTION
+    Registers an object in a group and returns an atom for it.  This routine
+    does _not_ check for unique-ness of the objects, if you register an object
+    twice, you will get two different atoms for it.  This routine does make
+    certain that each atom in a group is unique.  Atoms are created by getting
+    a unique number for the group the atom is in and incorporating the group
+    into the atom which is returned to the user.
+
+ RETURNS
+    Returns atom if successful and FAIL otherwise
+
+*******************************************************************************/
+hatom_t H5Aregister_atom(group_t grp,     /* IN: Group to register the object in */
+    const VOIDP object                    /* IN: Object to attach to atom */
+);
+
+/******************************************************************************
+ NAME
+     H5Aatom_object - Returns to the object ptr for the atom 
+
+ DESCRIPTION
+    Retrieves the object ptr which is associated with the atom.
+
+ RETURNS
+    Returns object ptr if successful and NULL otherwise
+
+*******************************************************************************/
+VOIDP H5Aatom_object(hatom_t atm   /* IN: Atom to retrieve object for */
+);
+
+/******************************************************************************
+ NAME
+     H5Aatom_group - Returns to the group for the atom 
+
+ DESCRIPTION
+    Retrieves the group which is associated with the atom.
+
+ RETURNS
+    Returns group if successful and FAIL otherwise
+
+*******************************************************************************/
+group_t H5Aatom_group(hatom_t atm   /* IN: Atom to retrieve group for */
+);
+
+/******************************************************************************
+ NAME
+     H5Aremove_atom - Removes an atom from a group
+
+ DESCRIPTION
+    Removes an atom from a group.
+
+ RETURNS
+    Returns atom's object if successful and FAIL otherwise
+
+*******************************************************************************/
+VOIDP H5Aremove_atom(hatom_t atm   /* IN: Atom to remove */
+);
+
+/******************************************************************************
+ NAME
+     H5Asearch_atom - Search for an object in a group and get it's pointer.
+
+ DESCRIPTION
+    Searchs for an object in a group and returns the pointer to it.
+    This routine calls the function pointer passed in for each object in the
+    group until it finds a match.  Currently there is no way to resume a
+    search.
+
+ RETURNS
+    Returns pointer an atom's object if successful and NULL otherwise
+
+*******************************************************************************/
+VOIDP H5Asearch_atom(group_t grp,        /* IN: Group to search for the object in */
+    H5Asearch_func_t func,               /* IN: Ptr to the comparison function */
+    const VOIDP key                     /* IN: pointer to key to compare against */
+);
+
+/******************************************************************************
+ NAME
+     H5Ais_reserved - Check whether an atom is a reserved atom in a group
+
+ DESCRIPTION
+    Determines the group an atom belongs to and checks if the atom is a
+    reserved atom in the group.
+
+ RETURNS
+    Returns BTRUE/BFALSE/BFAIL
+
+*******************************************************************************/
+intn H5Ais_reserved(hatom_t atm      /* IN: Group to search for the object in */
+);
+
+/******************************************************************************
+ NAME
+     H5Ashutdown - Terminate various static buffers.
+
+ DESCRIPTION
+    Free various buffers allocated in the H5A routines.
+
+ RETURNS
+    Returns SUCCEED/FAIL
+
+*******************************************************************************/
+intn H5Ashutdown(void);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5APROTO_H */
+
diff --git a/src/H5B.c b/src/H5B.c
new file mode 100644
index 0000000..f3a7052
--- /dev/null
+++ b/src/H5B.c
@@ -0,0 +1,1177 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		hdf5btree.c
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Implements balanced, sibling-linked, N-ary trees
+ *			capable of storing any type of data with unique key
+ *			values.
+ *
+ * 			A B-link-tree is a balanced tree where each node has
+ *			a pointer to its left and right siblings.  A
+ *			B-link-tree is a rooted tree having the following
+ *			properties:
+ *
+ * 			1. Every node, x, has the following fields:
+ *
+ * 			   a. level[x], the level in the tree at which node
+ *			      x appears.  Leaf nodes are at level zero.
+ *
+ * 			   b. n[x], the number of children pointed to by the
+ *			      node.  Internal nodes point to subtrees while
+ *			      leaf nodes point to arbitrary data.
+ *
+ * 			   c. The child pointers themselves, child[x,i] such
+ *			      that 0 <= i < n[x].
+ *
+ * 			   d. n[x]+1 key values stored in increasing
+ *			      order:
+ *
+ * 				key[x,0] < key[x,1] < ... < key[x,n[x]].
+ *
+ * 			   e. left[x] is a pointer to the node's left sibling
+ *			      or the null pointer if this is the left-most
+ *			      node at this level in the tree.
+ *			      
+ * 			   f. right[x] is a pointer to the node's right
+ *			      sibling or the null pointer if this is the
+ *			      right-most node at this level in the tree.
+ *
+ * 			3. The keys key[x,i] partition the key spaces of the
+ *			   children of x:
+ *
+ * 			      key[x,i] <= key[child[x,i],j] <= key[x,i+1]
+ *
+ *			   for any valid combination of i and j.
+ *
+ * 			4. There are lower and upper bounds on the number of
+ *			   child pointers a node can contain.  These bounds
+ *			   can be expressed in terms of a fixed integer k>=2
+ *			   called the `minimum degree' of the B-tree.
+ *
+ * 			   a. Every node other than the root must have at least
+ *			      k child pointers and k+1 keys.  If the tree is
+ *			      nonempty, the root must have at least one child
+ *			      pointer and two keys.
+ *
+ *  			   b. Every node can contain at most 2k child pointers
+ *			      and 2k+1 keys.  A node is `full' if it contains
+ *			      exactly 2k child pointers and 2k+1 keys.
+ *
+ * 			5. When searching for a particular value, V, and
+ *			   key[V] = key[x,i] for some node x and entry i,
+ *			   then:
+ *
+ * 			   a. If i=0 the child[0] is followed.
+ *
+ * 			   b. If i=n[x] the child[n[x]-1] is followed.
+ *
+ * 			   c. Otherwise, the child that is followed
+ *			      (either child[x,i-1] or child[x,i]) is
+ *			      determined by the type of object to which the
+ *			      leaf nodes of the tree point and is controlled
+ *			      by the key comparison function registered for
+ *			      that type of B-tree.
+ *
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/*
+ * Define this if the root address of a B-link tree should never change.
+ * 
+ * If this isn't defined and the root node of a tree splits, then the
+ * new root (which points to the old root plus the new node from the
+ * split) will be at a new file address.
+ *
+ * But if this is defined, then the old root will be copied to a new
+ * location and the new root will occupy the file memory vacated by the
+ * old root.
+ */
+#define H5B_ANCHOR_ROOT
+
+/* system headers */
+#include <assert.h>
+#include "hdf5.h"
+
+/* private headers */
+#include "H5ACprivate.h"		/*cache				*/
+#include "H5Bprivate.h"			/*B-link trees			*/
+#include "H5MFprivate.h"		/*File memory management	*/
+#include "H5MMprivate.h"		/*Core memory management       	*/
+
+#define BOUND(MIN,X,MAX) ((MIN)<(X)?(MIN):((MAX)>(X)?(MAX):(X)))
+#define false 0
+#define true 1
+
+/* PRIVATE PROTOTYPES */
+static off_t H5B_insert_helper (hdf5_file_t *f, off_t addr,
+				const H5B_class_t *type,
+				uint8 *lt_key, intn *lt_key_changed,
+				uint8 *md_key, void *udata,
+				uint8 *rt_key, intn *rt_key_changed);
+static herr_t H5B_flush (hdf5_file_t *f, hbool_t destroy, off_t addr,
+			 H5B_t *b);
+static H5B_t *H5B_load (hdf5_file_t *f, off_t addr, const void *_data);
+static herr_t H5B_decode_key (hdf5_file_t *f, H5B_t *bt, intn idx);
+static size_t H5B_nodesize (hdf5_file_t *f, const H5B_class_t *type,
+			    size_t *total_nkey_size, size_t sizeof_rkey);
+
+/* H5B inherits cache-like properties from H5AC */
+static const H5AC_class_t H5AC_BT[1] = {{
+   (void*(*)(hdf5_file_t*,off_t,const void*))H5B_load,
+   (herr_t(*)(hdf5_file_t*,hbool_t,off_t,void*))H5B_flush,
+}};
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_new
+ *
+ * Purpose:	Creates a new empty B-tree leaf node.
+ *
+ * Return:	Success:	address of new node.
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+off_t
+H5B_new (hdf5_file_t *f, const H5B_class_t *type, size_t sizeof_rkey)
+{
+   H5B_t	*bt=NULL;
+   off_t	addr;
+   size_t	size;
+   size_t	total_native_keysize;
+   intn		offset, i;
+
+   /*
+    * Allocate file and memory data structures.
+    */
+   size = H5B_nodesize (f, type, &total_native_keysize, sizeof_rkey);
+   if ((addr = H5MF_alloc (f, size))<=0) return 0;
+   bt = H5MM_xmalloc (sizeof(H5B_t));
+   bt->type = type;
+   bt->sizeof_rkey = sizeof_rkey;
+   bt->dirty = 1;
+   bt->ndirty = 0;
+   bt->type = type;
+   bt->level = 0;
+   bt->left = bt->right = 0;
+   bt->nchildren = 0;
+   bt->page = H5MM_xmalloc (size);
+   bt->native = H5MM_xmalloc (total_native_keysize);
+   bt->child = H5MM_xmalloc (2*type->k * sizeof(off_t));
+   bt->key = H5MM_xmalloc ((2*type->k+1) * sizeof(H5B_key_t));
+
+   /*
+    * Initialize each entry's raw child and key pointers to point into the
+    * `page' buffer.  Each native key pointer should be null until the key is
+    * translated to native format.
+    */
+   for (i=0,offset=H5B_HDR_SIZE(f);
+	i<2*type->k;
+	i++,offset+=bt->sizeof_rkey+SIZEOF_OFFSET(f)) {
+
+      bt->key[i].dirty = 0;
+      bt->key[i].rkey = bt->page + offset;
+      bt->key[i].nkey = NULL;
+      bt->child[i] = 0;
+   }
+
+   /*
+    * The last possible key...
+    */
+   bt->key[2*type->k].dirty = 0;
+   bt->key[2*type->k].rkey = bt->page + offset;
+   bt->key[2*type->k].nkey = NULL;
+
+   /*
+    * Cache the new B-tree node.
+    */
+   H5AC_set (f, H5AC_BT, addr, bt);
+   return addr;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_load
+ *
+ * Purpose:	Loads a B-tree node from the disk.
+ *
+ * Return:	Success:	Pointer to a new B-tree node.
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static H5B_t *
+H5B_load (hdf5_file_t *f, off_t addr, const void *_data)
+{
+   const H5B_class_t 	*type = (const H5B_class_t *)_data;
+   size_t		size, total_nkey_size;
+   H5B_t		*bt = H5MM_xmalloc (sizeof(H5B_t));
+   intn			i;
+   uint8		*p;
+
+   assert (type);
+   assert (type->get_sizeof_rkey);
+
+
+   bt->sizeof_rkey = (type->get_sizeof_rkey)(f);
+   size = H5B_nodesize (f, type, &total_nkey_size, bt->sizeof_rkey);
+   bt->type = type;
+   bt->dirty = 0;
+   bt->ndirty = 0;
+   bt->page = H5MM_xmalloc (size);
+   bt->native = H5MM_xmalloc (total_nkey_size);
+   bt->key = H5MM_xmalloc ((2*type->k+1) * sizeof(H5B_key_t));
+   bt->child = H5MM_xmalloc (2 * type->k * sizeof(off_t));
+   H5F_block_read (f, addr, size, bt->page);
+   p = bt->page;
+
+   /* magic number */
+   if (memcmp (p, H5B_MAGIC, 4)) goto error;
+   p += 4;
+
+   /* node type and level */
+   if (*p++ != type->id) goto error;
+   bt->level = *p++;
+
+   /* entries used */
+   UINT16DECODE (p, bt->nchildren);
+
+   /* sibling pointers */
+   H5F_decode_offset (f, p, bt->left);
+   H5F_decode_offset (f, p, bt->right);
+
+   /* the child/key pairs */
+   for (i=0; i<2*type->k; i++) {
+
+      bt->key[i].dirty = 0;
+      bt->key[i].rkey = p;
+      p += bt->sizeof_rkey;
+      bt->key[i].nkey = NULL;
+
+      if (i<bt->nchildren) {
+	 H5F_decode_offset (f, p, bt->child[i]);
+      } else {
+	 bt->child[i] = 0;
+	 p += SIZEOF_OFFSET(f);
+      }
+   }
+
+   bt->key[2*type->k].dirty = 0;
+   bt->key[2*type->k].rkey = p;
+   bt->key[2*type->k].nkey = NULL;
+   return bt;
+
+error:
+   if (bt) {
+      H5MM_xfree (bt->child);
+      H5MM_xfree (bt->key);
+      H5MM_xfree (bt->page);
+      H5MM_xfree (bt->native);
+      H5MM_xfree (bt);
+   }
+   return NULL;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_flush
+ *
+ * Purpose:	Flushes a dirty B-tree node to disk.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5B_flush (hdf5_file_t *f, hbool_t destroy, off_t addr, H5B_t *bt)
+{
+   intn		i;
+   size_t	size = H5B_nodesize (f, bt->type, NULL, bt->sizeof_rkey);
+   uint8	*p = bt->page;
+
+   assert (bt->type);
+   assert (bt->type->encode);
+   
+   if (bt->dirty) {
+      
+      /* magic number */
+      memcpy (p, H5B_MAGIC, 4);
+      p += 4;
+
+      /* node type and level */
+      *p++ = bt->type->id;
+      *p++ = bt->level;
+
+      /* entries used */
+      UINT16ENCODE (p, bt->nchildren);
+
+      /* sibling pointers */
+      H5F_encode_offset (f, p, bt->left);
+      H5F_encode_offset (f, p, bt->right);
+
+      /* child keys and pointers */
+      for (i=0; i<=bt->nchildren; i++) {
+	 
+	 /* encode the key */
+	 assert (bt->key[i].rkey == p);
+	 if (bt->key[i].dirty) {
+	    if (bt->key[i].nkey) {
+	       (bt->type->encode)(f, bt->key[i].rkey, bt->key[i].nkey);
+	    }
+	    bt->key[i].dirty = 0;
+	 }
+	 p += bt->sizeof_rkey;
+
+	 /* encode the child address */
+	 if (i<bt->ndirty) {
+	    H5F_encode_offset (f, p, bt->child[i]);
+	 } else {
+	    p += SIZEOF_OFFSET(f);
+	 }
+      }
+
+      /*
+       * Write the disk page.  We always write the header, but we don't
+       * bother writing data for the child entries that don't exist or
+       * for the final unchanged children.
+       */
+      H5F_block_write (f, addr, size, bt->page);
+      bt->dirty = 0;
+      bt->ndirty = 0;
+   }
+
+   if (destroy) {
+      H5MM_xfree (bt->child);
+      H5MM_xfree (bt->key);
+      H5MM_xfree (bt->page);
+      H5MM_xfree (bt->native);
+      H5MM_xfree (bt);
+   }
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_find
+ *
+ * Purpose:	Locate the specified information in a B-tree and return
+ *		that information by filling in fields of the caller-supplied
+ *		UDATA pointer depending on the type of leaf node
+ *		requested.  The UDATA can point to additional data passed
+ *		to the key comparison function.
+ *
+ * Note:	This function does not follow the left/right sibling
+ *		pointers since it assumes that all nodes can be reached
+ *		from the parent node.
+ *
+ * Return:	Success:	0 if found, values returned through the
+ *				RETVAL argument.
+ *
+ *		Failure:	-1 if not found.
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5B_find (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata)
+{
+   H5B_t	*bt=NULL;
+   uint8	lt_key[256], rt_key[256];
+   intn		idx=-1, lt=0, rt, cmp=1;
+
+   assert (type);
+   assert (type->sizeof_nkey < sizeof lt_key);
+   assert (type->decode);
+   assert (type->cmp);
+   assert (type->found);
+   
+   /*
+    * Perform a binary search to locate the child which contains
+    * the thing for which we're searching.  The comparison function
+    * may preempt the B-tree node from the cache.
+    */
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   rt = bt->nchildren;
+
+   while (lt<rt && cmp) {
+      idx = (lt + rt) / 2;
+      bt = H5AC_find (f, H5AC_BT, addr, type);
+      if (!bt) return -1;
+
+      /* the left key */
+      if (!bt->key[idx].nkey) H5B_decode_key (f, bt, idx);
+      HDmemcpy (lt_key, bt->key[idx].nkey, type->sizeof_nkey);
+
+      /* the right key */
+      if (!bt->key[idx+1].nkey) H5B_decode_key (f, bt, idx+1);
+      HDmemcpy (rt_key, bt->key[idx+1].nkey, type->sizeof_nkey);
+
+      /* compare */
+      if ((cmp=(type->cmp)(f, lt_key, udata, rt_key))<0) {
+	 rt = idx;
+      } else {
+	 lt = idx+1;
+      }
+   }
+   if (cmp) return -1;
+
+   /*
+    * Follow the link to the subtree or to the data node.
+    */
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   assert (idx>=0 && idx<bt->nchildren);
+   if (bt->level > 0) {
+      return H5B_find (f, type, bt->child[idx], udata);
+   }
+   
+   return (type->found)(f, bt->child[idx], lt_key, udata, rt_key);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_split
+ *
+ * Purpose:	Split a single node into two nodes.  If anchor is
+ *		H5B_ANCHOR_LT then the new node gets the right half of
+ *		the old node.  If anchor is H5B_ANCHOR_RT then the
+ *		new node gets the left half of the old node.
+ *
+ * Return:	Success:	Address of the new node.
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  3 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static off_t
+H5B_split (hdf5_file_t *f, const H5B_class_t *type, off_t addr, intn anchor)
+{
+   H5B_t	*old = H5AC_find (f, H5AC_BT, addr, type);
+   H5B_t 	*bt = H5MM_xmalloc (sizeof(H5B_t));
+   size_t	total_nkey_size, size;
+   intn		i, offset;
+   intn		delta = H5B_ANCHOR_LT==anchor ? type->k : 0;
+   size_t	recsize = old->sizeof_rkey + SIZEOF_OFFSET(f);
+   off_t	tmp_addr, new_addr;
+   H5B_t	*tmp=NULL;
+
+   /*
+    * Create the new B-tree node.
+    */
+   size = H5B_nodesize (f, type, &total_nkey_size, old->sizeof_rkey);
+   bt->dirty = 1;
+   bt->ndirty = BOUND (0, old->ndirty-delta, type->k);
+   bt->type = type;
+   bt->level = old->level;
+   bt->nchildren = type->k;
+   bt->page = H5MM_xmalloc (size);
+   bt->native = H5MM_xmalloc (total_nkey_size);
+   bt->child = H5MM_xmalloc (2*type->k * sizeof(off_t));
+   bt->key = H5MM_xmalloc ((2*type->k+1) * sizeof(H5B_key_t));
+
+   /*
+    * Copy data into the new node from the old node.
+    */
+   memcpy (bt->page + H5B_HDR_SIZE(f),
+	   old->page + H5B_HDR_SIZE(f) + delta*recsize,
+	   type->k * recsize);
+   memcpy (bt->native,
+	   old->native + delta * type->sizeof_nkey,
+	   (type->k+1) * type->sizeof_nkey);
+
+   for (i=0,offset=H5B_HDR_SIZE(f); i<=2*type->k; i++,offset+=recsize) {
+
+      /* key */
+      if (i<=type->k) {
+	 bt->key[i].dirty = old->key[delta+i].dirty;
+	 bt->key[i].rkey = bt->native + offset;
+	 if (old->key[delta+i].nkey) {
+	    bt->key[i].nkey = bt->native + i*type->sizeof_nkey;
+	 } else {
+	    bt->key[i].nkey = NULL;
+	 }
+      } else {
+	 bt->key[i].dirty = 0;
+	 bt->key[i].rkey = bt->native + offset;
+	 bt->key[i].nkey = NULL;
+      }
+
+      /* child */
+      if (i<type->k) {
+	 bt->child[i] = old->child[delta+i];
+      } else if (i<2*type->k) {
+	 bt->child[i] = 0;
+      }
+   }
+
+
+   /*
+    * Truncate the old node.
+    */
+   delta = H5B_ANCHOR_LT ? 0 : type->k;
+   old->dirty += 1;
+   old->ndirty = BOUND (0, old->ndirty-delta, type->k);
+   old->nchildren = type->k;
+   
+   if (H5B_ANCHOR_RT==anchor) {
+      memcpy (old->page + H5B_HDR_SIZE(f),
+	      old->page + H5B_HDR_SIZE(f) + delta*recsize,
+	      type->k * recsize);
+      memmove (old->native,
+	       old->native + delta * type->sizeof_nkey,
+	       (type->k+1) * type->sizeof_nkey);
+
+      for (i=0; i<=2*type->k; i++) {
+
+	 if (i<=type->k) {
+	    old->key[i].dirty = old->key[delta+i].dirty;
+	    if (old->key[delta+i].nkey) {
+	       old->key[i].nkey = old->native + i * type->sizeof_nkey;
+	    } else {
+	       old->key[i].nkey = NULL;
+	    }
+	 } else {
+	    old->key[i].nkey = NULL;
+	 }
+	 if (i<type->k) {
+	    old->child[i] = old->child[delta+i];
+	 } else if (i<2*type->k) {
+	    old->child[i] = 0;
+	 }
+      }
+   }
+
+   /*
+    * Update sibling pointers of new node.
+    */
+   if (H5B_ANCHOR_LT==anchor) {
+      bt->left = addr;
+      bt->right = old->right;
+   } else {
+      bt->left = old->left;
+      bt->right = addr;
+   }
+
+   /*
+    * Add the new node to the cache.
+    */
+   new_addr = H5MF_alloc (f, size);
+   H5AC_set (f, H5AC_BT, new_addr, bt);
+
+   /*
+    * Update sibling pointers of old nodes.
+    */
+   old = H5AC_find (f, H5AC_BT, addr, type);
+   if (H5B_ANCHOR_LT==anchor) {
+      old->dirty += 1;
+      tmp_addr = old->right;
+      old->right = new_addr;
+      if (tmp_addr) {
+	 tmp = H5AC_find (f, H5AC_BT, tmp_addr, type);
+	 tmp->dirty += 1;
+	 tmp->left = new_addr;
+      }
+   } else {
+      old->dirty += 1;
+      tmp_addr = old->left;
+      old->left = new_addr;
+      if (tmp_addr) {
+	 tmp = H5AC_find (f, H5AC_BT, tmp_addr, type);
+	 tmp->dirty += 1;
+	 tmp->right = new_addr;
+      }
+   }
+
+   return new_addr;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_decode_key
+ *
+ * Purpose:	Decode the specified key into native format.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  8 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5B_decode_key (hdf5_file_t *f, H5B_t *bt, intn idx)
+{
+   bt->key[idx].nkey = bt->native + idx * bt->type->sizeof_nkey;
+   (bt->type->decode)(f, bt->key[idx].rkey, bt->key[idx].nkey);
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_insert
+ *
+ * Purpose:	Adds a new item to the B-tree.  If the root node of
+ *		the B-tree splits then the B-tree gets a new address.
+ *
+ * Return:	Success:	Address of the root of the B-tree.  The
+ *				B-tree root address may change if the old
+ *				root is split.
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+off_t
+H5B_insert (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata)
+{
+   uint8	lt_key[256], md_key[256], rt_key[256];
+   intn		lt_key_changed=false, rt_key_changed=false;
+   off_t	child, new_root;
+   intn		level;
+   H5B_t	*bt;
+
+   assert (type);
+   assert (type->sizeof_nkey < sizeof lt_key);
+
+   child = H5B_insert_helper (f, addr, type, lt_key, &lt_key_changed,
+			      md_key, udata, rt_key, &rt_key_changed);
+   if (child<0) return 0;
+   if (0==child) return addr;
+
+   /* the current root */
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   level = bt->level;
+   if (!lt_key_changed) {
+      if (!bt->key[0].nkey) H5B_decode_key (f, bt, 0);
+      memcpy (lt_key, bt->key[0].nkey, type->sizeof_nkey);
+   }
+
+   /* the new node */
+   bt = H5AC_find (f, H5AC_BT, child, type);
+   if (!rt_key_changed) {
+      if (!bt->key[bt->nchildren].nkey) H5B_decode_key (f, bt, bt->nchildren);
+      memcpy (rt_key, bt->key[bt->nchildren].nkey, type->sizeof_nkey);
+   }
+
+#ifdef H5B_ANCHOR_ROOT
+   {
+      /*
+       * Copy the old root node to some other file location and make the new
+       * root at the old root's previous address.  This prevents the B-tree
+       * from "moving".
+       */
+      size_t size = H5B_nodesize (f, type, NULL, bt->sizeof_rkey);
+      uint8 *buf = H5MM_xmalloc (size);
+      off_t tmp_addr = H5MF_alloc (f, size);
+
+      H5AC_flush (f, H5AC_BT, addr, FALSE);
+      H5F_block_read (f, addr, size, buf);
+      H5F_block_write (f, tmp_addr, size, buf);
+      H5AC_rename (f, H5AC_BT, addr, tmp_addr);
+
+      buf = H5MM_xfree (buf);
+      new_root = addr;
+      addr = tmp_addr;
+
+      /* update the new child's left pointer */
+      bt = H5AC_find (f, H5AC_BT, child, type);
+      bt->dirty += 1;
+      bt->left = addr;
+
+      /* clear the old root at the old address */
+      bt = H5AC_find (f, H5AC_BT, new_root, type);
+      bt->dirty += 1;
+      bt->ndirty = 0;
+      bt->left = 0;
+      bt->right = 0;
+      bt->nchildren = 0;
+   }
+#else
+   /*
+    * The new root is created at a new file location.
+    */
+   new_root = H5B_new (f, type, bt->sizeof_rkey);
+#endif
+
+   /* the new root */
+   bt = H5AC_find (f, H5AC_BT, new_root, type);
+   bt->dirty += 1;
+   bt->ndirty = 2;
+   bt->level = level+1;
+   bt->nchildren = 2;
+   
+   bt->child[0] = addr;
+   bt->key[0].dirty = 1;
+   bt->key[0].nkey = bt->native;
+   memcpy (bt->key[0].nkey, lt_key, type->sizeof_nkey);
+
+   bt->child[1] = child;
+   bt->key[1].dirty = 1;
+   bt->key[1].nkey = bt->native + type->sizeof_nkey;
+   memcpy (bt->key[1].nkey, md_key, type->sizeof_nkey);
+
+   bt->key[2].dirty = 1;
+   bt->key[2].nkey = bt->native + 2 * type->sizeof_nkey;
+   memcpy (bt->key[2].nkey, rt_key, type->sizeof_nkey);
+
+   return new_root;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_insert_child
+ *
+ * Purpose:	Insert a child at the specified address with the
+ *		specified left or right key.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  8 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void
+H5B_insert_child (hdf5_file_t *f, const H5B_class_t *type, off_t addr,
+		  intn idx, off_t child, intn anchor, void *md_key)
+{
+   H5B_t	*bt;
+   size_t	recsize;
+   intn		i;
+
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   assert (bt);
+   bt->dirty += 1;
+   recsize = bt->sizeof_rkey + SIZEOF_OFFSET(f);
+   
+   if (H5B_ANCHOR_LT==anchor) {
+      /*
+       * The MD_KEY is the left key of the new node.
+       */
+      memmove (bt->page + H5B_HDR_SIZE(f) + (idx+1)*recsize,
+	       bt->page + H5B_HDR_SIZE(f) + idx*recsize,
+	       (bt->nchildren-idx)*recsize + bt->sizeof_rkey);
+
+      memmove (bt->native + (idx+1) * type->sizeof_nkey,
+	       bt->native + idx * type->sizeof_nkey,
+	       ((bt->nchildren-idx)+1) * type->sizeof_nkey);
+
+      for (i=bt->nchildren; i>=idx; --i) {
+	 bt->key[i+1].dirty = bt->key[i].dirty;
+      }
+      bt->key[idx].dirty = 1;
+      bt->key[idx].nkey = bt->native + idx * type->sizeof_nkey;
+      memcpy (bt->key[idx].nkey, md_key, type->sizeof_nkey);
+
+   } else {
+      /*
+       * The MD_KEY is the right key of the new node.
+       */
+      memmove (bt->page + (H5B_HDR_SIZE(f) +
+			   (idx+1)*recsize + bt->sizeof_rkey),
+	       bt->page + (H5B_HDR_SIZE(f) +
+			   idx*recsize + bt->sizeof_rkey),
+	       (bt->nchildren-idx) * recsize);
+
+      memmove (bt->native + idx + 2,
+	       bt->native + idx + 1,
+	       (bt->nchildren-idx) * type->sizeof_nkey);
+
+      for (i=bt->nchildren; i>idx; --i) {
+	 bt->key[i+1].dirty = bt->key[i].dirty;
+      }
+      bt->key[idx+1].dirty = 1;
+      bt->key[idx+1].nkey = bt->native +
+			    (idx+1) * type->sizeof_nkey;
+      memcpy (bt->key[idx+1].nkey, md_key, type->sizeof_nkey);
+   }
+
+   memmove (bt->child + idx + 1,
+	    bt->child + idx,
+	    (bt->nchildren - idx) * sizeof(off_t));
+
+   bt->child[idx] = child;
+   bt->nchildren += 1;
+   bt->ndirty = bt->nchildren;
+}	       
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_insert_helper
+ *
+ * Purpose:	Inserts the item UDATA into the tree rooted at ADDR and having
+ *		the specified type.
+ *
+ * 		On return, if LT_KEY_CHANGED is non-zero, then LT_KEY is
+ *		the new native left key.  Similarily for RT_KEY_CHANGED
+ *		and RT_KEY.
+ *
+ * 		If the node splits, then MD_KEY contains the key that
+ *		was split between the two nodes (that is, the key that
+ *		appears as the max key in the left node and the min key
+ *		in the right node).
+ *
+ * Return:	Success:	Address of the new node if the node
+ *				splits.  The new node is always to the
+ *				right of the previous node.
+ *
+ * 				0 if the node didn't split.  The MD_KEY
+ *				buffer is undefined.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  9 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static off_t
+H5B_insert_helper (hdf5_file_t *f, off_t addr, const H5B_class_t *type,
+		   uint8 *lt_key, intn *lt_key_changed,
+		   uint8 *md_key, void *udata,
+		   uint8 *rt_key, intn *rt_key_changed)
+{
+   H5B_t	*bt;
+   intn		lt=0, idx=-1, rt, cmp=-1;
+   intn		anchor;
+   off_t	child, twin=0;
+
+   assert (type);
+   assert (type->decode);
+   assert (type->cmp);
+   assert (type->new);
+
+   /*
+    * Use a binary search to find the child that will receive the new
+    * data.  The comparison function may preempt the B-tree node from
+    * the cache each time through the loop.  When the search completes
+    * IDX points to the child that should get the new data.
+    */
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   if (!bt) goto error;
+   rt = bt->nchildren;
+
+   while (lt<rt && cmp) {
+      idx = (lt + rt) / 2;
+      bt = H5AC_find (f, H5AC_BT, addr, type);
+      if (!bt) goto error;
+
+      /* left key */
+      if (!bt->key[idx].nkey) H5B_decode_key (f, bt, idx);
+      memcpy (lt_key, bt->key[idx].nkey, type->sizeof_nkey);
+
+      /* right key */
+      if (!bt->key[idx+1].nkey) H5B_decode_key (f, bt, idx+1);
+      memcpy (rt_key, bt->key[idx+1].nkey, type->sizeof_nkey);
+
+      /* compare */
+      if ((cmp=(type->cmp)(f, lt_key, udata, rt_key))<0) {
+	 rt = idx;
+      } else {
+	 lt = idx+1;
+      }
+   }
+
+   /*
+    * Adjust for boundary conditions.  If adjusting at the leaf level
+    * update the left and right key buffers since the data node insert
+    * function needs them as input.  Don't worry about it at higher node
+    * levels because this function uses them for output only.
+    */
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   if (cmp<0 && idx<=0) {
+      idx = 0;
+      cmp = 0;
+      if (0==bt->level && bt->nchildren) {
+	 if (!bt->key[idx].nkey) H5B_decode_key (f, bt, idx);
+	 memcpy (lt_key, bt->key[idx].nkey, type->sizeof_nkey);
+	 if (!bt->key[idx+1].nkey) H5B_decode_key (f, bt, idx+1);
+	 memcpy (rt_key, bt->key[idx+1].nkey, type->sizeof_nkey);
+      }
+   } else if (cmp>0 && idx+1>=bt->nchildren) {
+      idx = bt->nchildren-1;
+      cmp = 0;
+      if (0==bt->level && bt->nchildren) {
+	 if (!bt->key[idx].nkey) H5B_decode_key (f, bt, idx);
+	 memcpy (lt_key, bt->key[idx].nkey, type->sizeof_nkey);
+	 if (!bt->key[idx+1].nkey) H5B_decode_key (f, bt, idx+1);
+	 memcpy (rt_key, bt->key[idx+1].nkey, type->sizeof_nkey);
+      }
+   }
+   assert (0==cmp);
+   
+   /*
+    * If there are no children, then create a new child. This can only
+    * happen at the root of the B-tree.  Creating a new child may
+    * preempt the B-tree node from the cache.  The left and right key
+    * buffers are output values.
+    */
+   if (0==bt->nchildren) {
+      child = (type->new)(f, lt_key, udata, rt_key);
+      if (child<=0) goto error;
+      bt = H5AC_find (f, H5AC_BT, addr, type);
+      bt->nchildren = 1;
+      bt->dirty += 1;
+      bt->ndirty = 1;
+      bt->child[0] = child;
+      
+      bt->key[0].dirty = 1;
+      bt->key[0].nkey = bt->native;
+      memcpy (bt->key[0].nkey, lt_key, type->sizeof_nkey);
+
+      bt->key[1].dirty = 1;
+      bt->key[1].nkey = bt->native + type->sizeof_nkey;
+      memcpy (bt->key[1].nkey, rt_key, type->sizeof_nkey);
+      idx = 0;
+   }
+
+   /*
+    * Insert the new data in the child B-tree node or in the data node.
+    */
+   if (bt->level > 0) {
+      child = H5B_insert_helper (f, bt->child[idx], type,
+				 lt_key, lt_key_changed,
+				 md_key, udata,
+				 rt_key, rt_key_changed);
+      anchor = H5B_ANCHOR_LT;
+   } else {
+      child = (type->insert)(f, bt->child[idx], &anchor,
+			     lt_key, lt_key_changed,
+			     md_key, udata,
+			     rt_key, rt_key_changed);
+   }
+   if (child<0) goto error;
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+
+   /*
+    * Update the left and right keys.
+    */
+   if (*lt_key_changed) {
+      bt->key[idx].nkey = bt->native + idx * type->sizeof_nkey;
+      memcpy (bt->key[idx].nkey, lt_key, type->sizeof_nkey);
+      bt->dirty += 1;
+      bt->key[idx].dirty = 1;
+      if (idx>0) *lt_key_changed = false;
+   }
+   if (*rt_key_changed) {
+      bt->key[idx+1].nkey = bt->native +
+			    (idx+1) * type->sizeof_nkey;
+      memcpy (bt->key[idx+1].nkey, rt_key, type->sizeof_nkey);
+      bt->dirty += 1;
+      bt->key[idx+1].dirty = 1;
+      if (idx+1<bt->nchildren) *rt_key_changed = false;
+   }
+
+   /*
+    * If the child split and the left node is anchored, then the new
+    * child node gets inserted to the right of our current position.
+    */
+   if (child && H5B_ANCHOR_LT==anchor) idx++;
+      
+   /*
+    * Split this node if the child node split and this node is full.
+    * Make sure `addr' points to the node that gets the new child
+    * and that `idx' is adjusted appropriately.
+    */
+   if (child && bt->nchildren==2*type->k) {
+      twin = H5B_split (f, type, addr, anchor);
+      if (idx<=type->k) {
+	 addr = H5B_ANCHOR_LT==anchor ? addr : twin;
+      } else {
+	 idx -= type->k;
+	 addr = H5B_ANCHOR_LT==anchor ? twin : addr;
+      }
+   }
+   
+   /*
+    * If the child split, then insert the new child.
+    */
+   if (child) {
+      H5B_insert_child (f, type, addr, idx, child, anchor, md_key);
+   }
+
+   /*
+    * If this node split, return the mid key (the one that is shared
+    * by the left and right node).
+    */
+   if (twin) {
+      bt = H5AC_find (f, H5AC_BT, twin, type);
+      if (H5B_ANCHOR_LT==anchor) {
+	 if (!bt->key[0].nkey) {
+	    H5B_decode_key (f, bt, 0);
+	 }
+	 memcpy (md_key, bt->key[0].nkey, type->sizeof_nkey);
+      } else {
+	 if (!bt->key[bt->nchildren].nkey) {
+	    H5B_decode_key (f, bt, bt->nchildren);
+	 }
+	 memcpy (md_key, bt->key[bt->nchildren].nkey, type->sizeof_nkey);
+      }
+   }
+
+   return twin;
+
+error:
+   return -1;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_list
+ *
+ * Purpose:	Calls the list callback for each leaf node of the
+ *		B-tree, passing it the UDATA structure.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5B_list (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata)
+{
+   H5B_t	*bt;
+   off_t	*child=NULL;
+   off_t	twin;
+   intn		i, nchildren, status;
+   herr_t	(*list)(hdf5_file_t*,off_t,void*);
+
+   assert (type);
+   assert (type->list);
+   
+   bt = H5AC_find (f, H5AC_BT, addr, type);
+   if (!bt) return -1;
+
+   if (bt->level>0) {
+      return H5B_list (f, type, bt->child[0], udata);
+   } else {
+      child = H5MM_xmalloc (2 * type->k * sizeof(off_t));
+      list = type->list;
+      twin = addr;
+      
+      while (twin) { /*for each leaf node*/
+	 bt = H5AC_find (f, H5AC_BT, twin, type);
+	 if (!bt) {
+	    H5MM_xfree (child);
+	    return -1;
+	 }
+	 nchildren = bt->nchildren;
+	 twin = bt->right;
+	 HDmemcpy (child, bt->child, nchildren * sizeof(off_t));
+	 bt = NULL; /*list callback may invalidate the cache*/
+	 
+	 for (i=0; i<nchildren; i++) {
+	    status = (list)(f, child[i], udata);
+	    if (status<0) {
+	       H5MM_xfree (child);
+	       return -1;
+	    }
+	 }
+      }
+      H5MM_xfree (child);
+   }
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5B_nodesize
+ *
+ * Purpose:	Returns the number of bytes needed for this type of
+ *		B-tree node.  The size is the size of the header plus
+ *		enough space for 2t child pointers and 2t+1 keys.
+ *
+ * 		If TOTAL_NKEY_SIZE is non-null, what it points to will
+ *		be initialized with the total number of bytes required to
+ *		hold all the key values in native order.
+ *
+ * Return:	Success:	Size of node in file.
+ *
+ *		Failure:	never fails.
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  3 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5B_nodesize (hdf5_file_t *f, const H5B_class_t *type,
+	      size_t *total_nkey_size, size_t sizeof_rkey)
+{
+   if (total_nkey_size) {
+      *total_nkey_size = (2 * type->k + 1) * type->sizeof_nkey;
+   }
+
+   return (H5B_HDR_SIZE(f) +				/*node header	*/
+	   2 * type->k * SIZEOF_OFFSET(f) +		/*child pointers*/
+	   (2*type->k+1) * sizeof_rkey);		/*keys		*/
+}
+
diff --git a/src/H5Bprivate.h b/src/H5Bprivate.h
new file mode 100644
index 0000000..d6ecc7c
--- /dev/null
+++ b/src/H5Bprivate.h
@@ -0,0 +1,85 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Bprivate.h
+ * 			Jul 10 1997
+ * 			Robb Matzke <matzke@llnl.gov>
+ *
+ * Purpose:		Private non-prototype header.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Bprivate_H
+#define _H5Bprivate_H
+
+#include "H5Bproto.h"		/*API prototypes			*/
+
+
+
+#define H5B_MAGIC	"TREE"	/* tree node magic number		*/
+#define H5B_HDR_SIZE(F)	(8+2*SIZEOF_OFFSET(F))
+
+#define H5B_ANCHOR_LT	0	/* left node is anchored, right is new	*/
+#define H5B_ANCHOR_RT	1	/* right node is anchored, left is new	*/
+   
+
+/*
+ * Each class of object that can be pointed to by a B-link tree has a
+ * variable of this type that contains class variables and methods.
+ */
+typedef struct H5B_class_t {
+   intn		id;		/*id as found in file			*/
+   intn		k;		/* max children is 2k			*/
+   size_t	sizeof_nkey;	/*size of native (memory) key		*/
+   size_t	(*get_sizeof_rkey)(hdf5_file_t*);
+   off_t	(*new)(hdf5_file_t*,void*,void*,void*);
+   intn		(*cmp)(hdf5_file_t*,void*,void*,void*);
+   herr_t	(*found)(hdf5_file_t*,off_t,void*,void*,void*);
+   off_t	(*insert)(hdf5_file_t*,off_t,int*,void*,int*,void*,void*,
+			  void*,int*);
+   herr_t	(*list)(hdf5_file_t*,off_t,void*);
+   void		(*decode)(hdf5_file_t*,uint8*,void*);
+   void		(*encode)(hdf5_file_t*,uint8*,void*);
+} H5B_class_t;
+
+/*
+ * The B-tree node as stored in memory...
+ */
+typedef struct H5B_key_t {
+   intn		dirty;		/*native key is more recent than raw key*/
+   uint8	*rkey;		/*ptr into node->page for raw key	*/
+   void		*nkey;		/*null or ptr into node->native for key	*/
+} H5B_key_t;
+
+typedef struct H5B_t {
+   const H5B_class_t *type;	/*type of tree				*/
+   size_t	sizeof_rkey;	/*size of raw (disk) key		*/
+   intn		dirty;		/*something in the tree is dirty	*/
+   intn		ndirty;		/*num child ptrs to emit		*/
+   intn		level;		/*node level				*/
+   off_t	left;		/*address of left sibling		*/
+   off_t	right;		/*address of right sibling		*/
+   intn		nchildren;	/*number of child pointers		*/
+   uint8	*page;		/*disk page				*/
+   uint8	*native;	/*array of keys in native format	*/
+   H5B_key_t	*key;		/*2k+1 key entries			*/
+   off_t	*child;		/*2k child pointers			*/
+} H5B_t;
+
+
+/*
+ * Library prototypes.
+ */
+herr_t H5B_debug (hdf5_file_t *f, off_t addr, const H5B_class_t *type);
+off_t H5B_new (hdf5_file_t *f, const H5B_class_t *type, size_t sizeof_rkey);
+herr_t H5B_find (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata);
+off_t H5B_insert (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata);
+herr_t H5B_list (hdf5_file_t *f, const H5B_class_t *type, off_t addr, void *udata);
+
+
+#endif /* !_H5Bprivate_H */
diff --git a/src/H5Bproto.h b/src/H5Bproto.h
new file mode 100644
index 0000000..3869db4
--- /dev/null
+++ b/src/H5Bproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Bproto.h
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Non-API function prototypes for B-link trees.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Bproto_H
+#define _H5Bproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5C.c b/src/H5C.c
new file mode 100644
index 0000000..847f3b5
--- /dev/null
+++ b/src/H5C.c
@@ -0,0 +1,506 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       hdf5file.c
+   HDF5 "personality template" routines
+
+   EXPORTED ROUTINES
+       H5Csetparm   -- Set a parameter for a template
+       H5Cgetparm   -- Get a parameter for a template
+
+   LIBRARY-SCOPED ROUTINES
+
+   LOCAL ROUTINES
+       H5C_init_interface    -- initialize the interface
+   + */
+
+#include "hdf5.h"
+
+/* private header files */
+#include "H5private.h"      /* Generic Functions */
+#include "H5Cprivate.h"     /* Template information */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/* Define the library's default file creation template (constants in hdf5lims.h) */
+const file_create_temp_t default_file_create={
+    HDF5_USERBLOCK_DEFAULT,         /* Default user-block size */
+    HDF5_OFFSETSIZE_DEFAULT,        /* Default offset size */
+    HDF5_LENGTHSIZE_DEFAULT,        /* Default length size */
+    HDF5_BTREEPAGE_DEFAULT,         /* Default B-tree page size */
+    HDF5_BOOTBLOCK_VERSION,         /* Current Boot-Block version # */
+    HDF5_SMALLOBJECT_VERSION,       /* Current Small-Object heap version # */
+    HDF5_FREESPACE_VERSION,         /* Current Free-Space info version # */
+    HDF5_OBJECTDIR_VERSION,         /* Current Object Directory info version # */
+    HDF5_SHAREDHEADER_VERSION       /* Current Shared-Header format version # */
+};
+static hatom_t default_file_id=FAIL;   /* Atom for the default file-creation template */
+
+/*--------------------- Local function prototypes ----------------------------*/
+static herr_t H5C_init_interface(void);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5C_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5C_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5C_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5C_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5C_mask, ID_H5C_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    /* Initialize the atom group for the file IDs */
+    ret_value=H5Ainit_group(H5_TEMPLATE,HDF5_TEMPID_HASHSIZE,0);
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_init_interface, ret_value);
+}	/* H5C_init_interface */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5C_get_default_atom
+ PURPOSE
+    Retrive an atom for a default HDF5 template.
+ USAGE
+    hatom_t H5C_create(type)
+        hobjtype_t type;        IN: Type of object to retrieve default template of
+ RETURNS
+    Returns template ID (atom) of the default object for a template type on
+    success, FAIL on failure
+ DESCRIPTION
+        This is function retrieves atoms for the default templates for the
+    different types of HDF5 templates.  
+--------------------------------------------------------------------------*/
+hatom_t H5C_get_default_atom(hobjtype_t type)
+{
+    CONSTR(FUNC, "H5C_create");      /* for HERROR */
+    hatom_t        ret_value = FAIL;
+
+    FUNC_ENTER(H5C_mask, ID_H5C_get_default_atom, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    switch(type)
+      {
+        case H5_TEMPLATE:
+            if(default_file_id==FAIL)
+              {
+                if((default_file_id=H5Aregister_atom(H5_TEMPLATE, (const VOIDP)&default_file_create))==FAIL)
+                    HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+              } /* end else */
+            HGOTO_DONE(default_file_id);
+            break;
+
+        default:
+            HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+      } /* end switch */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_get_default_atom, ret_value);
+} /* end H5C_get_default_atom() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5C_init
+ PURPOSE
+    Initialize a new HDF5 template with a copy of an existing template.
+ USAGE
+    herr_t H5C_init(dst_atm, src)
+        hatom_t dst_atm;               IN: Atom for the template to initialize
+        file_create_temp_t *src;       IN: Template to use to initialize with
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function copies the contents of the source template into the
+    newly created destination template.
+--------------------------------------------------------------------------*/
+herr_t H5C_init(hatom_t dst_atm, const file_create_temp_t *src)
+{
+    CONSTR(FUNC, "H5C_init"); /* for HERROR */
+    file_create_temp_t *dst;    /* destination template */
+    herr_t ret_value = SUCCEED;   /* return value */
+
+    FUNC_ENTER(H5C_mask, ID_H5C_init, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(src==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* Get the template to initialize */
+    if((dst=H5Aatom_object(dst_atm))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Copy in the source template */
+    HDmemcpy(dst,src,sizeof(file_create_temp_t));
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_init, ret_value);
+} /* end H5C_init() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5C_create
+ PURPOSE
+    Create a new HDF5 template.
+ USAGE
+    hatom_t H5C_create(owner_id, type, name)
+        hatom_t owner_id;       IN: Group/file which owns this template
+        hobjtype_t type;        IN: Type of template to create
+        const char *name;       IN: Name of the template to create
+ RETURNS
+    Returns template ID (atom) on success, FAIL on failure
+ DESCRIPTION
+        This is the primary function for creating different HDF5 templates.
+    Currently the name of template is not used and may be NULL.
+--------------------------------------------------------------------------*/
+hatom_t H5C_create(hatom_t owner_id, hobjtype_t type, const char *name)
+{
+    CONSTR(FUNC, "H5C_create"); /* for HERROR */
+    hatom_t ret_value = FAIL;   /* atom for template object to return */
+
+    FUNC_ENTER(H5C_mask, ID_H5C_create, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    switch(type)
+      {
+        case H5_TEMPLATE:
+            {
+                file_create_temp_t *new_create_temp;    /* new template object to create */
+
+                if((new_create_temp=HDmalloc(sizeof(file_create_temp_t)))==NULL)
+                    HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+                if((ret_value=H5Aregister_atom(H5_TEMPLATE, (const VOIDP)new_create_temp))==FAIL)
+                    HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+            } /* end case/block */
+            break;
+
+        default:
+            HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+      } /* end switch */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_create, ret_value);
+} /* end H5C_create() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5C_release
+ PURPOSE
+    Release access to a template object.
+ USAGE
+    herr_t H5C_release(oid)
+        hatom_t oid;       IN: Template object to release access to
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function releases access to a template object
+--------------------------------------------------------------------------*/
+herr_t H5C_release(hatom_t oid)
+{
+    CONSTR(FUNC, "H5C_release");      /* for HERROR */
+    file_create_temp_t *template;     /* template to destroy */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5C_mask, ID_H5C_release, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Chuck the object! :-) */
+    if((template=H5Aremove_atom(oid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    HDfree(template);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_release, ret_value);
+} /* end H5C_release() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Cgetparm
+ PURPOSE
+    Get a parameter from a template
+ USAGE
+    herr_t H5Cgetparm(tid, parm, buf)
+        hatom_t tid;        IN: Template object to retrieve parameter from
+        file_create_param_t parm;   IN: Paramter to retrieve
+        VOIDP buf;          OUT: Pointer to buffer to store parameter in
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function retrieves the value of a specific parameter from a
+    template
+--------------------------------------------------------------------------*/
+herr_t H5Cgetparm(hatom_t tid, file_create_param_t parm, VOIDP buf)
+{
+    CONSTR(FUNC, "H5Cgetparm");      /* for HERROR */
+    file_create_temp_t *template;    /* template to query */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5C_mask, ID_H5Cgetparm, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(buf==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* Get a pointer the template to query */
+    if((template=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    switch(parm)
+      {
+        case H5_USERBLOCK_SIZE:
+            *(uintn *)buf=template->userblock_size;
+            break;
+
+        case H5_OFFSET_SIZE:
+            *(uintn *)buf=template->offset_size;
+            break;
+
+        case H5_LENGTH_SIZE:
+            *(uintn *)buf=template->length_size;
+            break;
+
+        case H5_BTREE_SIZE:
+            *(uintn *)buf=template->btree_page_size;
+            break;
+
+        case H5_BOOTBLOCK_VER:
+            *(uint8 *)buf=template->bootblock_ver;
+            break;
+
+        case H5_SMALLOBJECT_VER:
+            *(uint8 *)buf=template->smallobject_ver;
+            break;
+
+        case H5_FREESPACE_VER:
+            *(uint8 *)buf=template->freespace_ver;
+            break;
+
+        case H5_OBJECTDIR_VER:
+            *(uint8 *)buf=template->objectdir_ver;
+            break;
+
+        case H5_SHAREDHEADER_VER:
+            *(uint8 *)buf=template->sharedheader_ver;
+            break;
+
+        default:
+            HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+      } /* end switch */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5Cgetparm, ret_value);
+} /* end H5Cgetparm() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Csetparm
+ PURPOSE
+    Set a parameter from a template
+ USAGE
+    herr_t H5Csetparm(tid, parm, buf)
+        hatom_t tid;        IN: Template object to store parameter in
+        file_create_param_t parm;   IN: Parameter to store
+        VOIDP buf;          OUT: Pointer to parameter buffer
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function stores the value of a specific parameter for a template
+--------------------------------------------------------------------------*/
+herr_t H5Csetparm(hatom_t tid, file_create_param_t parm, const VOIDP buf)
+{
+    CONSTR(FUNC, "H5Csetparm");      /* for HERROR */
+    file_create_temp_t *template;    /* template to query */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5C_mask, ID_H5Csetparm, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(buf==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* Get a pointer the template to query */
+    if((template=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    switch(parm)
+      {
+        case H5_USERBLOCK_SIZE:
+            template->userblock_size=*(const uintn *)buf;
+            break;
+
+        case H5_OFFSET_SIZE:
+            template->offset_size=*(const uintn *)buf;
+            break;
+
+        case H5_LENGTH_SIZE:
+            template->length_size=*(const uintn *)buf;
+            break;
+
+        case H5_BTREE_SIZE:
+            template->btree_page_size=*(const uintn *)buf;
+            break;
+
+        case H5_BOOTBLOCK_VER:
+            template->bootblock_ver=*(const uint8 *)buf;
+            break;
+
+        case H5_SMALLOBJECT_VER:
+            template->smallobject_ver=*(const uint8 *)buf;
+            break;
+
+        case H5_FREESPACE_VER:
+            template->freespace_ver=*(const uint8 *)buf;
+            break;
+
+        case H5_OBJECTDIR_VER:
+            template->objectdir_ver=*(const uint8 *)buf;
+            break;
+
+        case H5_SHAREDHEADER_VER:
+            template->sharedheader_ver=*(const uint8 *)buf;
+            break;
+
+        default:
+            HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+      } /* end switch */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5Csetparm, ret_value);
+} /* end H5Csetparm() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5C_copy
+ PURPOSE
+    Copy a template
+ USAGE
+    hatom_t H5C_copy(tid)
+        hatom_t tid;        IN: Template object to copy
+ RETURNS
+    Returns template ID (atom) on success, FAIL on failure
+ DESCRIPTION
+    This function creates a new copy of a template with all the same parameter
+    settings.
+--------------------------------------------------------------------------*/
+hatom_t H5C_copy(hatom_t tid)
+{
+    CONSTR(FUNC, "H5C_copy");      /* for HERROR */
+    file_create_temp_t *template, *new_template;    /* template to query */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5C_mask, ID_H5C_copy, H5C_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Get a pointer the template to query */
+    if((template=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Allocate space for the new template */
+    if((new_template=HDmalloc(sizeof(file_create_temp_t)))==NULL)
+        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+
+    /* Copy over the information from the old template */
+    HDmemcpy(new_template,template,sizeof(file_create_temp_t));
+
+    /* Register the atom for the new template */
+    if((ret_value=H5Aregister_atom(H5_TEMPLATE, (const VOIDP)new_template))==FAIL)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5C_mask, ID_H5C_copy, ret_value);
+} /* end H5C_copy() */
+
diff --git a/src/H5Cprivate.h b/src/H5Cprivate.h
new file mode 100644
index 0000000..4f7357f
--- /dev/null
+++ b/src/H5Cprivate.h
@@ -0,0 +1,25 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains private information about the H5C module
+ */
+
+#ifndef H5CPRIVATE_H
+#define H5CPRIVATE_H
+
+#include "H5Cproto.h"
+
+#endif /* H5CPRIVATE_H */
+
diff --git a/src/H5Cproto.h b/src/H5Cproto.h
new file mode 100644
index 0000000..0d8f26d
--- /dev/null
+++ b/src/H5Cproto.h
@@ -0,0 +1,41 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5C module
+ */
+
+#ifndef H5CPROTO_H
+#define H5CPROTO_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5C.c */
+hatom_t H5C_create(hatom_t owner_id, hobjtype_t type, const char *name);
+hatom_t H5C_copy(hatom_t tid);
+herr_t H5C_release(hatom_t oid);
+hatom_t H5C_get_default_atom(hobjtype_t type);
+herr_t H5C_init(hatom_t dst_atm, const file_create_temp_t *src);
+herr_t H5Cgetparm(hatom_t tid, file_create_param_t parm, VOIDP buf);
+herr_t H5Csetparm(hatom_t tid, file_create_param_t parm, const VOIDP buf);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5CPROTO_H */
+
diff --git a/src/H5E.c b/src/H5E.c
new file mode 100644
index 0000000..a697f39
--- /dev/null
+++ b/src/H5E.c
@@ -0,0 +1,394 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       hdf5err.c
+   HDF error reporting routines
+
+   EXPORTED ROUTINES
+       H5Enew_err_stack -- Create a new error stack to push values on
+       H5Epush          -- Push an error value on an error stack
+
+   LIBRARY-SCOPED ROUTINES
+
+   LOCAL ROUTINES
+       H5E_init_interface    -- initialize the H5E interface
+   + */
+
+#define HDF5_ERR_MASTER
+#include "hdf5.h"
+#include "H5Eprivate.h"     /* Private error routines */
+#undef HDF5_ERR_MASTER
+
+#include "H5private.h"      /* Generic Functions */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*------------------_-- Local function prototypes ----------------------------*/
+static herr_t H5E_init_interface(void);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5E_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5E_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5E_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5E_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5_mask, ID_H5Iinit_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    /* Initialize the atom group for the error stacks */
+    ret_value=H5Ainit_group(H5_ERR,HDF5_ERRSTACK_HASHSIZE,0);
+
+    FUNC_LEAVE(H5_mask, ID_H5E_init_interface, ret_value);
+}	/* H5E_init_interface */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5Enew_err_stack -- Create a new error stack
+USAGE
+    int32 H5Enew_err_stack(initial_stack_size);
+    uintn initial_stack_size;       IN: Starting size of the error stack
+   
+RETURNS
+    The ID of the error stack created on success, FAIL on failure.
+
+DESCRIPTION
+    Dynamically creates a new error stack to push error values onto.
+
+--------------------------------------------------------------------------*/
+int32 H5Enew_err_stack(uintn initial_stack_size)
+{
+    CONSTR(FUNC, "H5Enew_err_stack");	/* For HERROR */
+    H5E_errstack_t *new_stack=NULL;     /* Pointer to the new error stack */
+    int32 ret_value = FAIL;
+
+    FUNC_ENTER(H5E_mask, ID_H5Enew_err_stack, H5E_init_interface,FAIL);
+
+    /* Allocate the stack header */
+    if((new_stack=HDmalloc(sizeof(H5E_errstack_t)))==NULL)
+        HGOTO_DONE(FAIL);
+
+    /* Initialize the stack header */
+    new_stack->stack_size=initial_stack_size;
+    new_stack->stack_top=0;
+    if((new_stack->err_stack=HDcalloc(initial_stack_size,sizeof(H5E_error_t)))==NULL)
+      {
+        HDfree(new_stack);
+        HGOTO_DONE(FAIL);
+      } /* end if */
+    new_stack->push=H5E_store;  /* Set the default error handler */
+
+    /* Get an atom for the error stack */
+    ret_value=H5Aregister_atom(H5_ERR, new_stack);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5E_mask, ID_H5Enew_err_stack, ret_value);
+}	/* H5Enew_err_stack */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5Edelete_err_stack -- Destroy an error stack
+USAGE
+    intn H5Edelete_err_stack(err_stack);
+    int32 err_stack;       IN: Error stack to delete
+   
+RETURNS
+    SUCCEED/FAIL
+
+DESCRIPTION
+    Destroys an error stack, releasing memory allocated, etc.
+
+--------------------------------------------------------------------------*/
+intn H5Edelete_err_stack(int32 err_stack)
+{
+    CONSTR(FUNC, "H5Edelete_err_stack");	/* For HERROR */
+    H5E_errstack_t *old_stack=NULL;         /* Pointer to the new error stack */
+    intn ret_value = SUCCEED;
+
+    FUNC_ENTER(H5E_mask, ID_H5Edelete_err_stack, H5E_init_interface,FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    if (H5Aatom_group(err_stack)!=H5_ERR)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+
+    /* Get the error stack to put the error on */
+    if((old_stack=H5Aremove_atom(err_stack))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Clear the error descriptions and reset the stack top */
+    for(; old_stack->stack_top>0; old_stack->stack_top--)
+      {
+        if (old_stack->err_stack[old_stack->stack_top-1].desc)
+          {
+              HDfree(old_stack->err_stack[old_stack->stack_top-1].desc);
+              old_stack->err_stack[old_stack->stack_top-1].desc=NULL;
+          } /* end if */
+      } /* end if */
+
+    HDfree(old_stack->err_stack);
+    HDfree(old_stack);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5E_mask, ID_H5Edelete_err_stack, ret_value);
+}	/* H5Edelete_err_stack */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5Eclear -- Clear an error stack for later error entries
+USAGE
+    void H5Eclear(int32 err_hand)
+    int32 err_hand;         IN: The ID of the error stack to push the error onto.
+   
+RETURNS
+   none
+DESCRIPTION
+    Clear an error stack to allow errors to be pushed onto it.
+
+--------------------------------------------------------------------------*/
+void H5Eclear(int32 err_hand)
+{
+    CONSTR(FUNC, "H5Eclear");	/* For HERROR */
+    H5E_errstack_t *err_stack=NULL; /* Pointer to the error stack to put value on */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5E_mask, ID_H5Eclear, H5E_init_interface,FAIL);
+
+    /* Get the error stack for this error handler, initialized earlier in H5Enew_err_stack */
+    if (H5Aatom_group(err_hand)!=H5_ERR)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+
+    /* Get the error stack to put the error on */
+    if((err_stack=H5Aatom_object(err_hand))==NULL)
+        HGOTO_ERROR(H5E_BADATOM, H5E_BADATOM, FAIL);
+
+    /* Clear the error descriptions and reset the stack top */
+    for(; err_stack->stack_top>0; err_stack->stack_top--)
+      {
+        if (err_stack->err_stack[err_stack->stack_top-1].desc)
+          {
+              HDfree(err_stack->err_stack[err_stack->stack_top-1].desc);
+              err_stack->err_stack[err_stack->stack_top-1].desc=NULL;
+          } /* end if */
+      } /* end if */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    PABLO_TRACE_OFF(H5E_mask, ID_H5Eclear);  /* ignore ret_value set */
+}	/* H5Eclear */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5E_store -- Push an error value on an error stack
+USAGE
+    void H5E_store(hdf_err_code_t err, const char *function_name, const char *file_name, intn line)
+    hdf_err_code_t err;     IN: The error code which occurred.
+    const char *function_name;     IN: Name of the function the error occurred within.
+    const char *file_name;  IN: Name of the file the error occurred within.
+    intn line;              IN: Line # in the file the error occurred on.
+   
+RETURNS
+   none
+DESCRIPTION
+    Pushes an error onto an error stack for this thread.  (This is the default
+    action when errors occur, but can be overridden by user's code)
+
+--------------------------------------------------------------------------*/
+void H5E_store(int32 errid, hdf_maj_err_code_t maj, hdf_min_err_code_t min, const char *function_name, const char *file_name, intn line)
+{
+    CONSTR(FUNC, "H5E_store");	/* For HERROR */
+    H5E_errstack_t *err_stack=NULL;     /* Pointer to the error stack to put value on */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5E_mask, ID_H5E_store, H5E_init_interface,FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5Eclear(errid);
+
+    /* Get the error stack to put the error on */
+    if((err_stack=H5Aatom_object(errid))==NULL)
+        HGOTO_ERROR(H5E_BADATOM, H5E_BADATOM, FAIL);
+
+    /* Check if we need to expand the stack */
+    if(err_stack->stack_top>=err_stack->stack_size)
+      {
+        H5E_error_t *old_stack=err_stack->err_stack;    /* in case realloc fails */
+
+        /* Ask for new stack that's twice as large */
+        if((err_stack->err_stack=HDrealloc(old_stack,2*err_stack->stack_size))==NULL)
+          {
+            err_stack->err_stack=old_stack;
+            HGOTO_DONE(FAIL);
+          } /* end if */
+        err_stack->stack_size *= 2; /* increase the size of the stack */
+      } /* end if */
+
+    /* Push the error onto the error stack */
+    err_stack->err_stack[err_stack->stack_top].maj=maj;
+    err_stack->err_stack[err_stack->stack_top].min=min;
+    HDstrncpy(err_stack->err_stack[err_stack->stack_top].function_name,function_name,MAX_FUNC_NAME_LEN);
+    err_stack->err_stack[err_stack->stack_top].file_name=file_name;
+    err_stack->err_stack[err_stack->stack_top].line=line;
+
+    /* Increment the top of the error stack */
+    err_stack->stack_top++;
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    PABLO_TRACE_OFF(H5E_mask, ID_H5E_store);  /* ignore ret_value set */
+}	/* H5E_store */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5Epush -- Push an error value on an error stack
+USAGE
+    void H5Epush(hdf_err_code_t err, const char *function_name, const char *file_name, intn line)
+    hdf_err_code_t err;     IN: The error code which occurred.
+    const char *function_name;     IN: Name of the function the error occurred within.
+    const char *file_name;  IN: Name of the file the error occurred within.
+    intn line;              IN: Line # in the file the error occurred on.
+   
+RETURNS
+   none
+DESCRIPTION
+    Pushes an error onto an error stack for this thread.
+
+--------------------------------------------------------------------------*/
+void H5Epush(hdf_maj_err_code_t maj, hdf_min_err_code_t min, const char *function_name, const char *file_name, intn line)
+{
+    CONSTR(FUNC, "H5Epush");	/* For HERROR */
+    H5E_errstack_t *err_stack=NULL;     /* Pointer to the error stack to put value on */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5E_mask, ID_H5Epush, H5E_init_interface,FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if (function_name==NULL || file_name==NULL || H5Aatom_group(thrderrid)!=H5_ERR)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+
+    /* Get the error stack to put the error on */
+    if((err_stack=H5Aatom_object(thrderrid))==NULL)
+        HGOTO_ERROR(H5E_BADATOM, H5E_BADATOM, FAIL);
+
+    err_stack->push(thrderrid, maj, min, function_name, file_name, line);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    PABLO_TRACE_OFF(H5E_mask, ID_H5Epush);  /* ignore ret_value set */
+}	/* H5Epush */
+
+/*--------------------------------------------------------------------------
+NAME
+   H5Eset_push -- Set the function to call when an error value is reported
+USAGE
+    H5E_push_func_t H5Eset_push(H5E_push_func_t func)
+    H5E_push_func_t func;   IN: New function to call when an error occurs.
+   
+RETURNS
+    The function pointer to the previous error function on success, NULL on
+    failure.
+DESCRIPTION
+    Changes the function which is called for errors on this thread.  The thread
+    ID is implicit, ie. this function must be called within each thread whose
+    error function is to be changed.
+
+--------------------------------------------------------------------------*/
+H5E_push_func_t H5Eset_push(H5E_push_func_t func)
+{
+    CONSTR(FUNC, "H5Eset_push");	/* For HERROR */
+    H5E_errstack_t *err_stack=NULL;     /* Pointer to the error stack to put value on */
+    H5E_push_func_t ret_value = NULL;
+
+    FUNC_ENTER(H5E_mask, ID_H5Eset_push, H5E_init_interface,NULL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if (func==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL);
+
+    /* Get the error stack to put the error on */
+    if((err_stack=H5Aatom_object(thrderrid))==NULL)
+        HGOTO_ERROR(H5E_BADATOM, H5E_BADATOM, NULL);
+
+    ret_value=err_stack->push;
+    err_stack->push=func;
+
+done:
+  if(ret_value == NULL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5E_mask, ID_H5Eset_push, ret_value);
+}	/* H5Eset_push */
+
diff --git a/src/H5Eprivate.h b/src/H5Eprivate.h
new file mode 100644
index 0000000..9de9d69
--- /dev/null
+++ b/src/H5Eprivate.h
@@ -0,0 +1,131 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ *  Header file for error values, etc.
+ */
+
+#ifndef HDF5ERR_H
+#define HDF5ERR_H
+
+#include "H5Eproto.h"
+
+/*
+   ======================================================================
+   Error codes
+
+   NOTE: Remember to update the error_messages[] structure later in this file
+   whenever errors are added/deleted from this list.
+   ======================================================================
+ */
+/* 
+ * This section of code is designed to be only accessible to the actual
+ * error-management code.
+ */
+#ifdef HDF5_ERR_MASTER
+
+/* 
+ * error_messages is the list of error messages in the system, kept as
+ * error_code-message pairs.  
+ */
+ 
+typedef struct 
+  {
+      hdf_maj_err_code_t error_code;
+      const char *str;
+  }
+hdf_maj_error_messages_t;
+
+static const hdf_maj_error_messages_t hdf_maj_error_messages[] =
+{
+    {H5E_NONE_MAJOR,    "No error"},
+    {H5E_ARGS,          "Invalid arguments to routine"},
+    {H5E_RESOURCE,      "Resource unavailable"},
+    {H5E_INTERNAL,      "Internal HDF5 error (too specific to document in detail)"},
+    {H5E_FILE,          "File Accessability"},
+    {H5E_IO,            "Low-level I/O"},
+    {H5E_FUNC,          "Function Entry/Exit"},
+    {H5E_ATOM,          "Object Atom"},
+};
+
+typedef struct 
+  {
+      hdf_min_err_code_t error_code;
+      const char *str;
+  }
+hdf_min_error_messages_t;
+
+static const hdf_min_error_messages_t hdf_min_error_messages[] =
+{
+    {H5E_NONE_MINOR,    "No error"},
+    {H5E_UNINITIALIZED, "Information is uninitialized"},
+    {H5E_UNSUPPORTED,   "Feature is unsupported"},
+    {H5E_BADTYPE,       "Incorrect type found"},
+    {H5E_BADRANGE,      "Incorrect range of argument"},
+    {H5E_NOSPACE,       "No space available for allocation"},
+    {H5E_FILEEXISTS,    "File already exists"},
+    {H5E_FILEOPEN,      "File already open"},
+    {H5E_CANTCREATE,    "Can't create file"},
+    {H5E_CANTOPEN,      "Can't open file"},
+    {H5E_NOTHDF5,       "Not an HDF5 format file"},
+    {H5E_BADFILE,       "Bad file ID accessed"},
+    {H5E_SEEKERROR,     "File seek failed"},
+    {H5E_READERROR,     "File read failed"},
+    {H5E_WRITEERROR,    "File write failed"},
+    {H5E_CANTINIT,      "Can't initialize interface"},
+    {H5E_ALREADYINIT,   "Object already initialized"},
+    {H5E_BADATOM,       "Can't find atom information"},
+    {H5E_CANTREGISTER,  "Can't register new atom"}
+};
+
+/* We use a stack to hold the errors plus we keep track of the function,
+   file and line where the error occurs. */
+
+/* the structure of the error stack element */
+typedef struct error_t
+  {
+      hdf_maj_err_code_t maj;    /* Major error number */
+      hdf_min_err_code_t min;    /* Minor error number */
+      char function_name[MAX_FUNC_NAME_LEN];    /* function where error occur */
+      const char *file_name;    /* file where error occur */
+      intn        line;         /* line in file where error occurs */
+      char       *desc;         /* optional supplied description */
+  }
+H5E_error_t;
+
+/* Structure to store error information for a thread */
+typedef struct errstack_t
+  {
+      uintn stack_size;         /* Number of elements allocated in the stack */
+      uintn stack_top;          /* Offset of the next open stack element */
+      H5E_error_t *err_stack;   /* Pointer to the error stack */
+      H5E_push_func_t push;     /* Function to call when an error is to be reported */
+  } H5E_errstack_t;
+
+#endif /* HDF5_ERR_MASTER */
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Private functions in H5E.c */
+void H5E_store(int32 errid, hdf_maj_err_code_t maj, hdf_min_err_code_t min, const char *function_name, const char *file_name, intn line);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* HDF5ERR_H */
+
diff --git a/src/H5Eproto.h b/src/H5Eproto.h
new file mode 100644
index 0000000..da011bf
--- /dev/null
+++ b/src/H5Eproto.h
@@ -0,0 +1,126 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5E module
+ */
+
+#ifndef H5EPROTO_H
+#define H5EPROTO_H
+
+/* HERROR macro, used to facilitate error reporting.  Assumes that
+   there's a variable called FUNC which holds the function name.
+   Assume that func and file are both stored in static space, or at
+   least be not corrupted in the meanwhile. */
+
+#define HERROR(maj, min) H5Epush(maj, min, FUNC, __FILE__, __LINE__)
+
+/* HRETURN_ERROR macro, used to facilitate error reporting.  Makes
+   same assumptions as HERROR.  IN ADDITION, this macro causes
+   a return from the calling routine */
+
+#define HRETURN_ERROR(maj, min, ret_val) {HERROR(maj, min); return(ret_val);}
+
+/* HGOTO_ERROR macro, used to facilitate error reporting.  Makes
+   same assumptions as HERROR.  IN ADDITION, this macro causes
+   a jump to the label 'done' which should be in every fucntion
+   Also there is an assumption of a variable 'ret_value' */
+
+#define HGOTO_ERROR(maj, min, ret_val) { HERROR(maj, min); \
+        ret_value = ret_val; goto done; }
+
+/* HGOTO_DONE macro, used to facilitate the new error reporting model.  
+   This macro is just a wrapper to set the return value and jump to the 'done'
+   label.  Also assumption of a variable 'ret_value' */
+
+#define HGOTO_DONE(ret_val) {ret_value = ret_val; goto done;}
+
+/* H5ECLEAR macro, used to facilitate the new error reporting model.  
+   This macro is just a wrapper to clear the error stack with the thread
+   error ID */
+
+#define H5ECLEAR H5Eclear(thrderrid)
+
+/* Declare an enumerated type which holds all the valid major HDF error codes */
+typedef enum
+  {
+      H5E_NONE_MAJOR = 0,      /* special zero, no error */
+      H5E_ARGS,                /* Invalid arguments to routine */
+      H5E_RESOURCE,            /* Resource unavailable */
+      H5E_INTERNAL,            /* Internal error (too specific to document in detail) */
+      H5E_FILE,                /* File Accessability */
+      H5E_IO,                  /* Low-level I/O */
+      H5E_FUNC,                /* Function Entry/Exit */
+      H5E_ATOM                 /* Object Atom */
+  }
+hdf_maj_err_code_t;
+
+/* Declare an enumerated type which holds all the valid minor HDF error codes */
+typedef enum
+  {
+      H5E_NONE_MINOR = 0,      /* special zero, no error */
+
+    /* Argument errors */
+      H5E_UNINITIALIZED,       /* Information is unitialized */
+      H5E_UNSUPPORTED,         /* Feature is unsupported */
+      H5E_BADTYPE,             /* Incorrect type found */
+      H5E_BADRANGE,            /* Incorrect range of argument */
+
+    /* Resource errors */
+      H5E_NOSPACE,             /* No space available for allocation */
+
+    /* File accessability errors */
+      H5E_FILEEXISTS,          /* File already exists */
+      H5E_FILEOPEN,            /* File already open */
+      H5E_CANTCREATE,          /* Can't create file */
+      H5E_CANTOPEN,            /* Can't open file */
+      H5E_NOTHDF5,             /* Not an HDF5 format file */
+      H5E_BADFILE,             /* Bad file ID accessed */
+
+    /* Generic low-level file I/O errors */
+      H5E_SEEKERROR,           /* File seek failed */
+      H5E_READERROR,           /* File read failed */
+      H5E_WRITEERROR,          /* File write failed */
+
+    /* Function entry/exit interface errors */
+      H5E_CANTINIT,            /* Can't initialize interface */
+      H5E_ALREADYINIT,         /* Object already initialized */
+
+    /* Object atom related errors */
+      H5E_BADATOM,             /* Can't find atom information */
+      H5E_CANTREGISTER         /* Can't register new atom */
+  }
+hdf_min_err_code_t;
+
+/* Function pointer to report errors through */
+typedef void (*H5E_push_func_t)(int32 errid, hdf_maj_err_code_t maj, hdf_min_err_code_t min, const char *function_name, const char *file_name, intn line);
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5E.c */
+int32 H5Enew_err_stack(uintn initial_stack_size);
+intn H5Edelete_err_stack(int32 err_hand);
+H5E_push_func_t H5Eset_push(H5E_push_func_t func);
+void H5Epush(hdf_maj_err_code_t maj, hdf_min_err_code_t min, const char *function_name, const char *file_name, intn line);
+void H5Eclear(int32 err_hand);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5EPROTO_H */
+
diff --git a/src/H5F.c b/src/H5F.c
new file mode 100644
index 0000000..d75e09f
--- /dev/null
+++ b/src/H5F.c
@@ -0,0 +1,852 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*
+   FILE
+       hdf5file.c
+   HDF5 file I/O routines
+
+   EXPORTED ROUTINES
+       H5Fcreate    -- Create an HDF5 file
+       H5Fclose     -- Close an open HDF5 file
+
+   LIBRARY-SCOPED ROUTINES
+
+   LOCAL ROUTINES
+       H5F_init_interface    -- initialize the H5F interface
+ */
+
+#define HDF5_FILE_MASTER
+#include "hdf5.h"
+#undef HDF5_FILE_MASTER
+
+/* Packages needed by this file... */
+#include "H5private.h"      	/*library functions			*/
+#include "H5ACprivate.h"	/*cache					*/
+#include "H5Gprivate.h"		/*symbol tables				*/
+#include "H5MMprivate.h"	/*core memory management		*/
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*--------------------- Local function prototypes ----------------------------*/
+static herr_t H5F_init_interface(void);
+static hdf5_file_t *H5F_new (void);
+static hdf5_file_t *H5F_dest (hdf5_file_t *f);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5F_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5F_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5F_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5F_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5F_mask, ID_H5F_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    /* Initialize the atom group for the file IDs */
+    ret_value=H5Ainit_group(H5_FILE,HDF5_FILEID_HASHSIZE,0);
+
+    FUNC_LEAVE(H5_mask, ID_H5F_init_interface, ret_value);
+}	/* H5F_init_interface */
+
+#ifdef LATER
+/*--------------------------------------------------------------------------
+ NAME
+       H5F_encode_length_unusual -- encode an unusual length size
+ USAGE
+       void H5F_encode_length_unusual(f, p, l)
+       const hdf5_file_t *f;             IN: pointer to the file record
+       uint8 **p;               IN: pointer to buffer pointer to encode length in
+       uint8 *l;                IN: pointer to length to encode
+ RETURNS
+    none
+ DESCRIPTION
+    Encode non-standard (i.e. not 2, 4 or 8-byte) lengths in file meta-data.
+--------------------------------------------------------------------------*/
+void H5F_encode_length_unusual(const hdf5_file_t *f, uint8 **p, uint8 *l)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5F_encode_length_unusual");
+#endif /* LATER */
+    intn i=f->file_create_parms.length_size;
+
+/* For non-little-endian platforms, encode each byte in memory backwards */
+#if ((DF_MT&0xFFF0)!=0x4440)
+    for(; i>=0; i--,(*p)++)
+        *(*p)=*(l+i);
+#else   /* platform has little-endian integers */
+    for(; i>=0; i--,(*p)++)
+        *(*p)=*l;
+#endif
+
+#ifdef LATER
+done:
+    if(ret_value == FALSE)   
+      { /* Error condition cleanup */
+
+      } /* end if */
+#endif /* LATER */
+
+    /* Normal function cleanup */
+
+}	/* H5F_encode_length_unusual */
+
+/*--------------------------------------------------------------------------
+ NAME
+       H5F_encode_offset_unusual -- encode an unusual offset size
+ USAGE
+       void H5F_encode_offset_unusual(f, p, o)
+       const hdf5_file_t *f;             IN: pointer to the file record
+       uint8 **p;               IN: pointer to buffer pointer to encode offset in
+       uint8 *o;                IN: pointer to offset to encode
+ RETURNS
+    none
+ DESCRIPTION
+    Encode non-standard (i.e. not 2, 4 or 8-byte) offsets in file meta-data.
+--------------------------------------------------------------------------*/
+void H5F_encode_offset_unusual(const hdf5_file_t *f, uint8 **p, uint8 *o)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5F_encode_offset_unusual");
+#endif /* LATER */
+    intn i=f->file_create_parms.offset_size;
+
+/* For non-little-endian platforms, encode each byte in memory backwards */
+#if ((DF_MT&0xFFF0)!=0x4440)
+    for(; i>=0; i--,(*p)++)
+        *(*p)=*(o+i);
+#else   /* platform has little-endian integers */
+    for(; i>=0; i--,(*p)++)
+        *(*p)=*o;
+#endif
+
+#ifdef LATER
+done:
+    if(ret_value == FALSE)   
+      { /* Error condition cleanup */
+
+      } /* end if */
+#endif /* LATER */
+
+    /* Normal function cleanup */
+
+}	/* H5F_encode_offset_unusual */
+#endif /* LATER */
+
+/*--------------------------------------------------------------------------
+ NAME
+       H5F_compare_filename -- compare file objects for the atom API
+ USAGE
+       intn HPcompare_filename(obj, key)
+       const VOIDP obj;             IN: pointer to the file record
+       const VOIDP key;             IN: pointer to the name of file
+ RETURNS
+       TRUE if the key matches the obj, FALSE otherwise
+ DESCRIPTION
+       Look inside the file record for the atom API and compare the the
+       filenames.
+--------------------------------------------------------------------------*/
+intn H5F_compare_filename(const VOIDP obj, const VOIDP key)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5F_compare_filename");
+#endif /* LATER */
+
+
+#ifdef LATER
+done:
+    if(ret_value == FALSE)   
+      { /* Error condition cleanup */
+
+      } /* end if */
+#endif /* LATER */
+
+    /* Normal function cleanup */
+
+    return(!HDstrcmp(((const hdf5_file_t *)obj)->filename,(const char *)key));
+}	/* H5F_compare_filename */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Fget_create_template
+ PURPOSE
+    Get an atom for a copy of the file-creation template for this file
+ USAGE
+    hatom_t H5Fget_create_template(fid)
+        hatom_t fid;    IN: File ID
+ RETURNS
+    Returns template ID on success, FAIL on failure
+ DESCRIPTION
+        This function returns an atom with a copy of the template parameters
+    used to create a file.
+--------------------------------------------------------------------------*/
+hatom_t H5Fget_create_template(hatom_t fid)
+{
+    CONSTR(FUNC, "H5Fget_create_template");      /* for HERROR */
+    hdf5_file_t *file=NULL;         /* file struct for file to close */
+    hatom_t ret_value = FAIL;
+
+    FUNC_ENTER(H5F_mask, ID_H5Fget_create_template, H5F_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Get the file structure */
+    if((file=H5Aatom_object(fid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Create the template object to return */
+    if((ret_value=H5Mcreate(fid,H5_TEMPLATE,NULL))==FAIL)
+        HGOTO_ERROR(H5E_FUNC, H5E_CANTCREATE, FAIL);
+
+    if(H5C_init(ret_value,&(file->file_create_parms))==FAIL)
+        HGOTO_ERROR(H5E_FUNC, H5E_CANTINIT, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5F_mask, ID_H5Fget_create_template, ret_value);
+} /* end H5Fget_create_template() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Fis_hdf5
+ PURPOSE
+    Check the file signature to detect an HDF5 file.
+ USAGE
+    hbool_t H5Fis_hdf5(filename)
+        const char *filename;   IN: Name of the file to check
+ RETURNS
+    TRUE/FALSE/FAIL
+ DESCRIPTION
+    This function determines if a file is an HDF5 format file.
+--------------------------------------------------------------------------*/
+hbool_t H5Fis_hdf5(const char *filename)
+{
+    CONSTR(FUNC, "H5Fis_hdf5");        /* for HERROR */
+    hdf_file_t f_handle=H5FI_INVALID_FILE;      /* file handle */
+    uint8 temp_buf[HDF5_FILE_SIGNATURE_LEN];    /* temporary buffer for checking file signature */
+    size_t curr_off=0;          /* The current offset to check in the file */
+    size_t file_len=0;          /* The length of the file we are checking */
+    hbool_t ret_value = BFALSE;
+
+    FUNC_ENTER(H5F_mask, ID_H5Fis_hdf5, H5F_init_interface, BFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(filename==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, BFAIL);
+
+    /* Open the file */
+    f_handle=H5FI_OPEN(filename,0);
+    if(H5FI_OPENERR(f_handle))
+        HGOTO_ERROR(H5E_FILE, H5E_BADFILE, BFAIL);
+
+    /* Get the length of the file */
+    if(H5FI_SEEKEND(f_handle)==FAIL)
+        HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, BFAIL);
+    file_len=H5FI_TELL(f_handle);
+
+    /* Check the offsets where the file signature is possible */
+    while(curr_off<file_len)
+      {
+        if(H5FI_SEEK(f_handle,curr_off)==FAIL)
+            HGOTO_ERROR(H5E_IO, H5E_READERROR, BFAIL);
+        if(H5FI_READ(f_handle,temp_buf, HDF5_FILE_SIGNATURE_LEN)==FAIL)
+            HGOTO_ERROR(H5E_IO, H5E_READERROR, BFAIL);
+        if(HDmemcmp(temp_buf,HDF5_FILE_SIGNATURE,HDF5_FILE_SIGNATURE_LEN)==0)
+          {
+            ret_value=BTRUE;
+            break;
+          } /* end if */
+        if(curr_off==0)
+            curr_off=512;
+        else
+            curr_off*=2;
+      } /* end while */
+    H5FI_CLOSE(f_handle);   /* close the file we opened */
+
+done:
+  if(ret_value == BFAIL)
+    { /* Error condition cleanup */
+
+      /* Check if we left a dangling file handle */
+      if(f_handle!=H5FI_INVALID_FILE)
+        H5FI_CLOSE(f_handle);   /* close the file we opened */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5F_mask, ID_H5Fis_hdf5, ret_value);
+} /* end H5Fis_hdf5() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_new
+ *
+ * Purpose:	Creates a new file object and initializes it.  The
+ *		H5Fopen and H5Fcreate functions then fill in various
+ *		fields.
+ *
+ * Return:	Success:	Ptr to a new file struct.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static hdf5_file_t *
+H5F_new (void)
+{
+   hdf5_file_t	*f = H5MM_xcalloc (1, sizeof(hdf5_file_t));
+
+   /* Create an error stack for errors with this file */
+   f->file_err = H5Enew_err_stack(HDF5_FILE_ERRSTACK);
+
+   /* Create a cache */
+   H5AC_new (f);
+
+   /* Create a root symbol slot */
+   f->root_sym = H5MM_xcalloc (1, sizeof (H5G_entry_t));
+   f->root_sym->type = H5G_NOTHING_CACHED;
+   
+   return f;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_dest
+ *
+ * Purpose:	Destroys a file structure.  This function does not flush
+ *		the cache or anything else; it only frees memory associated
+ *		with the file struct.
+ *
+ * Return:	Success:	NULL
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static hdf5_file_t *
+H5F_dest (hdf5_file_t *f)
+{
+   if (f) {
+      H5AC_dest (f);
+      if(f->file_err!=0) H5Edelete_err_stack (f->file_err);
+      f->dir = H5MM_xfree (f->dir);
+      f->filename = H5MM_xfree (f->filename);
+      H5MM_xfree (f);
+   }
+   return NULL;
+}
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Fcreate
+ PURPOSE
+    Create a new HDF5 file.
+ USAGE
+    int32 H5Fcreate(filename, flags)
+        const char *filename;   IN: Name of the file to create
+        uintn flags;            IN: Flags to indicate various options.
+        hatom_t create_temp;    IN: File-creation template
+        hatom_t access_temp;    IN: File-access template
+ RETURNS
+    Returns file ID on success, FAIL on failure
+ DESCRIPTION
+        This is the primary function for creating HDF5 files . The flags
+    parameter determines whether an existing file will be overwritten or not.
+    All newly created files are opened for both reading and writing.  All flags
+    may be combined with the "||" (logical OR operator) to change the behavior
+    of the file open call.
+        The flags currently defined:
+            H5ACC_OVERWRITE - Truncate file, if it already exists. The file will
+                be truncated, erasing all data previously stored in the file.
+        The more complex behaviors of a file's creation and access are
+    controlled through the file-creation and file-access templates.
+
+ MODIFICATIONS:
+    Robb Matzke, 18 Jul 1997
+    File struct creation and destruction is through H5F_new() H5F_dest().
+    Writing the root symbol table entry is done with H5G_encode().
+--------------------------------------------------------------------------*/
+hatom_t H5Fcreate(const char *filename, uintn flags, hatom_t create_temp, hatom_t access_temp)
+{
+    CONSTR(FUNC, "H5Fcreate");      /* for HERROR */
+    hdf5_file_t *new_file=NULL;     /* file struct for new file */
+    hdf_file_t f_handle=H5FI_INVALID_FILE;  /* file handle */
+    const file_create_temp_t *f_create_parms;    /* pointer to the parameters to use when creating the file */
+    uint8 temp_buf[2048], *p;       /* temporary buffer for encoding header */
+    intn file_exists=0;             /* flag to indicate that file exists already */
+    hatom_t ret_value = FAIL;
+
+    FUNC_ENTER(H5F_mask, ID_H5Fcreate, H5F_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(filename==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* See if this file is already open */
+    if(H5Asearch_atom(H5_FILE,H5F_compare_filename,(const VOIDP)filename)!=NULL)
+        HGOTO_ERROR(H5E_FILE, H5E_FILEOPEN, FAIL);
+
+    /* Check if the file already exists */
+    f_handle=H5FI_OPEN(filename,0);
+    if(!H5FI_OPENERR(f_handle))
+      {
+        file_exists=1;  /* set the flag to indicate that the file already exists */
+        H5FI_CLOSE(f_handle);   /* close the file we opened */
+        f_handle=H5FI_INVALID_FILE;
+      } /* end if */
+
+    /* throw an error if the file exists and we aren't allowed to overwrite it */
+    if((flags&H5ACC_OVERWRITE)==0 && file_exists) 
+        HGOTO_ERROR(H5E_FILE, H5E_FILEEXISTS, FAIL);
+
+    /* OK to create/overwrite the file */
+    f_handle=H5FI_CREATE(filename);
+    if(H5FI_OPENERR(f_handle))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTCREATE, FAIL);
+
+    /* Create the file node */
+    if (NULL==(new_file=H5F_new()))
+       HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+
+    /* Set the non-zero elements of the file structure */
+    new_file->dir=HDgetcwd(NULL,0); /* get the directory we just created the file within */
+    new_file->filename=HDstrdup(filename);  /* make a copy of the filename */
+    new_file->acc_perm=H5ACC_WRITE;     /* all new files we create have write permission */
+    new_file->file_handle=f_handle;     /* keep the file handle we just opened */
+    new_file->ref_count=1;              /* only 1 fid handed out so far */
+    new_file->consist_flags=0x03;       /* Set file-consistency flags: write-access and "file is consistent" */
+    new_file->smallobj_off=0;           /* Set the offset of the small-object heap */
+    new_file->freespace_off=0;          /* Set the offset of the free-space info */
+    /* Get the file-creation template & record it */
+    if(create_temp<=0)
+        create_temp=H5C_get_default_atom(H5_TEMPLATE);
+    if((f_create_parms=H5Aatom_object(create_temp))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    HDmemcpy(&new_file->file_create_parms,f_create_parms,sizeof(file_create_temp_t));
+
+#ifdef LATER
+    /* Get the file-access template & record it */
+    if(access_temp<=0)
+        access_temp=H5CPget_default_atom(H5_TEMPLATE);
+    if((f_access_parms=H5Aatom_object(access_temp))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    HDmemcpy(&new_file->file_access_parms,f_access_parms,sizeof(file_access_temp_t));
+#endif /* LATER */
+
+    /* Create the basic skeleton of the file */
+
+    /* Seek to the correct offset to write out the file signature & boot-block */
+    if(new_file->file_create_parms.userblock_size>0)
+        if(H5FI_SEEK(new_file->file_handle,new_file->file_create_parms.userblock_size)==FAIL)
+            HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL);
+    
+    /* Write out the file-signature */
+    if(H5FI_WRITE(new_file->file_handle,HDF5_FILE_SIGNATURE,HDF5_FILE_SIGNATURE_LEN)==FAIL)
+        HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL);
+
+    /* Encode the boot block */
+    p=temp_buf;
+    *p++=f_create_parms->bootblock_ver;    /* Encode Boot-block version # */
+    *p++=f_create_parms->smallobject_ver;  /* Encode Small-Object Heap version # */
+    *p++=f_create_parms->freespace_ver;    /* Encode Free-Space Info version # */
+    *p++=f_create_parms->objectdir_ver;    /* Encode Object Directory Format version # */
+    *p++=f_create_parms->sharedheader_ver; /* Encode Shared-Header Info version # */
+    *p++=(uint8)f_create_parms->offset_size; /* Encode the number of bytes for the offset */
+    *p++=(uint8)f_create_parms->length_size; /* Encode the number of bytes for the length */
+    *p++=0;                         /* Encode the reserved byte :-) */
+    UINT32ENCODE(p,f_create_parms->btree_page_size);    /* Encode the B-Tree page size */
+    UINT32ENCODE(p,new_file->consist_flags);       /* Encode File-Consistancy flags */
+    H5F_encode_offset(new_file,p,new_file->smallobj_off);  /* Encode offset of global small-object heap */
+    H5F_encode_offset(new_file,p,new_file->freespace_off);  /* Encode offset of global free-space heap */
+    /* Predict the header length and encode it: */
+    H5F_encode_length(new_file,p,(p-temp_buf)+f_create_parms->length_size+H5F_symbol_table_size(new_file)); /* Encode length of boot-block */
+    
+    /* Encode the (bogus) symbol-table entry */
+    if (H5G_encode (new_file, &p, new_file->root_sym)<0) {
+       HGOTO_ERROR (H5E_IO, H5E_WRITEERROR, FAIL);
+    }
+
+    /* Write out the boot block */
+    if(H5FI_WRITE(new_file->file_handle,temp_buf,(size_t)(p-temp_buf))==FAIL)
+        HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL);
+    new_file->logical_len = p - temp_buf;
+    
+
+    /* Get an atom for the file */
+    if((ret_value=H5Aregister_atom(H5_FILE, new_file))==FAIL)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+      /* Check if we left a dangling file handle */
+      if(f_handle!=H5FI_INVALID_FILE)
+        H5FI_CLOSE(f_handle);   /* close the file we opened */
+
+      /* Check if we left a dangling file struct */
+      if (new_file) H5F_dest (new_file);
+    }
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5F_mask, ID_H5Fcreate, ret_value);
+} /* end H5Fcreate() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Fopen
+ PURPOSE
+    Open an existing HDF5 file.
+ USAGE
+    hatom_t H5Fopen(filename, flags, access_temp)
+        const char *filename;   IN: Name of the file to create
+        uintn flags;            IN: Flags to indicate various options.
+        hatom_t access_temp;    IN: File-access template
+ RETURNS
+    Returns file ID on success, FAIL on failure
+ DESCRIPTION
+        This is the primary function for accessing existing HDF5 files. The
+    flags parameter determines whether writing to an existing file will be allowed
+    or not.  All flags may be combined with the "||" (logical OR operator) to
+    change the behavior of the file open call.
+        The flags currently defined:
+            H5ACC_WRITE - Allow writing to the file.
+        The more complex behaviors of a file's access are controlled through
+    the file-access template.
+
+ MODIFICATIONS:
+    Robb Matzke, 18 Jul 1997
+    File struct creation and destruction is through H5F_new() H5F_dest().
+    Reading the root symbol table entry is done with H5G_decode().
+--------------------------------------------------------------------------*/
+hatom_t H5Fopen(const char *filename, uintn flags, hatom_t access_temp)
+{
+    CONSTR(FUNC, "H5Fopen");        /* for HERROR */
+    hdf5_file_t *new_file=NULL;     /* file struct for new file */
+    hdf_file_t f_handle=H5FI_INVALID_FILE;  /* file handle */
+    hatom_t create_temp;            /* file-creation template ID */
+    const file_create_temp_t *f_create_parms;    /* pointer to the parameters to use when creating the file */
+    uint8 temp_buf[2048], *p;       /* temporary buffer for encoding header */
+    size_t curr_off=0;          /* The current offset to check in the file */
+    size_t file_len=0;          /* The length of the file we are checking */
+    hatom_t ret_value = FAIL;
+
+    FUNC_ENTER(H5F_mask, ID_H5Fopen, H5F_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(filename==NULL)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* See if this file is already open */
+    new_file=H5Asearch_atom(H5_FILE,H5F_compare_filename,(const VOIDP)filename);
+
+    /* If the file is already open, check the access permissions and go ahead with it */
+    if(new_file!=NULL && new_file->acc_perm==flags)
+      {
+        /* Get an atom for the file */
+        new_file->ref_count++;  /* increment the reference count for the file */
+        if((ret_value=H5Aregister_atom(H5_FILE, new_file))==FAIL)
+            HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+        HGOTO_DONE(ret_value);
+      } /* end if */
+
+    /* 
+     * If the file exists but has different permissions or if it's a new file,
+     * start a new file handle for it, etc.
+     */
+    if(H5Fis_hdf5(filename)==BFALSE)
+        HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL);
+
+    /* Check if the file already exists */
+    f_handle=H5FI_OPEN(filename,flags);
+    if(H5FI_OPENERR(f_handle))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTOPEN, FAIL);
+
+    /* Create the file node */
+    if (NULL==(new_file=H5F_new()))
+        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+
+    /* Set the non-zero elements of the file structure */
+    new_file->dir=HDgetcwd(NULL,0); /* get the directory we just created the file within */
+    new_file->filename=HDstrdup(filename);  /* make a copy of the filename */
+    new_file->acc_perm=flags;       /* set the access permissions */
+    new_file->file_handle=f_handle;     /* keep the file handle we just opened */
+    new_file->ref_count=1;              /* only 1 fid handed out so far */
+    create_temp=H5C_get_default_atom(H5_TEMPLATE);
+    if((f_create_parms=H5Aatom_object(create_temp))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    HDmemcpy(&new_file->file_create_parms,f_create_parms,sizeof(file_create_temp_t));
+
+#ifdef LATER
+    if(access_temp<=0)
+        access_temp=H5CPget_default_atom(H5_TEMPLATE);
+    if((f_access_parms=H5Aatom_object(access_temp))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    HDmemcpy(&new_file->file_access_parms,f_access_parms,sizeof(file_access_temp_t));
+#endif /* LATER */
+
+    /* Read the basic skeleton of the file */
+
+    /* Seek to the correct offset to read in the file signature & boot-block */
+    /* Get the length of the file */
+    if(H5FI_SEEKEND(new_file->file_handle)==FAIL)
+        HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, BFAIL);
+    file_len=H5FI_TELL(new_file->file_handle);
+
+    /* Check the offsets where the file signature is possible */
+    while(curr_off<file_len)
+      {
+        if(H5FI_SEEK(new_file->file_handle,curr_off)==FAIL)
+            HGOTO_ERROR(H5E_IO, H5E_READERROR, BFAIL);
+        if(H5FI_READ(new_file->file_handle,temp_buf, HDF5_FILE_SIGNATURE_LEN)==FAIL)
+            HGOTO_ERROR(H5E_IO, H5E_READERROR, BFAIL);
+        if(HDmemcmp(temp_buf,HDF5_FILE_SIGNATURE,HDF5_FILE_SIGNATURE_LEN)==0)
+          {
+            new_file->file_create_parms.userblock_size=curr_off;
+            break;
+          } /* end if */
+        if(curr_off==0)
+            curr_off=512;
+        else
+            curr_off*=2;
+      } /* end while */
+    if(curr_off>file_len)
+        HGOTO_ERROR(H5E_FILE, H5E_NOTHDF5, FAIL);
+    
+    /* Read in the fixed-size part of the boot-block */
+    if(H5FI_READ(new_file->file_handle,temp_buf,16)==FAIL)
+        HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL);
+
+    /* Decode the boot block */
+    p=temp_buf;
+    new_file->file_create_parms.bootblock_ver=*p++;    /* Decode Boot-block version # */
+    new_file->file_create_parms.smallobject_ver=*p++;  /* Decode Small-Object Heap version # */
+    new_file->file_create_parms.freespace_ver=*p++;    /* Decode Free-Space Info version # */
+    new_file->file_create_parms.objectdir_ver=*p++;    /* Decode Object Directory Format version # */
+    new_file->file_create_parms.sharedheader_ver=*p++; /* Decode Shared-Header Info version # */
+    new_file->file_create_parms.offset_size=*p++;   /* Decode the number of bytes for the offset */
+    new_file->file_create_parms.length_size=*p++;   /* Decode the number of bytes for the length */
+    p++;                         /* Decode the reserved byte :-) */
+    UINT32DECODE(p,new_file->file_create_parms.btree_page_size);    /* Decode the B-Tree page size */
+    UINT32DECODE(p,new_file->consist_flags);       /* Decode File-Consistancy flags */
+    H5F_decode_offset(new_file,p,new_file->smallobj_off);  /* Decode offset of global small-object heap */
+    H5F_decode_offset(new_file,p,new_file->freespace_off);  /* Decode offset of global free-space heap */
+    H5F_decode_length(new_file,p,new_file->logical_len); /* Decode logical length of file */
+
+    /* Decode the root symbol table entry */
+    if (H5G_decode (new_file, &p, new_file->root_sym)<0) {
+       HGOTO_ERROR (H5E_IO, H5E_READERROR, FAIL);
+    }
+
+    /* Get an atom for the file */
+    if((ret_value=H5Aregister_atom(H5_FILE, new_file))==FAIL)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+      /* Check if we left a dangling file handle */
+      if(f_handle!=H5FI_INVALID_FILE)
+        H5FI_CLOSE(f_handle);   /* close the file we opened */
+
+      /* Check if we left a dangling file struct */
+      if(new_file) HDfree(new_file);
+    }
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5F_mask, ID_H5Fopen, ret_value);
+} /* end H5Fopen() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Fclose
+ PURPOSE
+    Close an open HDF5 file.
+ USAGE
+    int32 H5Fclose(fid)
+        int32 fid;      IN: File ID of file to close
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function terminates access to an HDF5 file.  If this is the last
+    file ID open for a file and if access IDs are still in use, this function
+    will fail.
+
+ MODIFICATIONS:
+    Robb Matzke, 18 Jul 1997
+    File struct destruction is through H5F_dest().
+--------------------------------------------------------------------------*/
+herr_t H5Fclose(hatom_t fid)
+{
+    CONSTR(FUNC, "H5Fclose");       /* for HERROR */
+    hdf5_file_t *file=NULL;         /* file struct for file to close */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5F_mask, ID_H5Fclose, H5F_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(H5Aatom_group(fid)!=H5_FILE)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+
+    /* Get the file handle to close */
+    if((file=H5Aatom_object(fid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Decrement the ref. count and recycle the file structure */
+    if((--file->ref_count)==0)
+      {
+        H5AC_flush (file, NULL, 0, TRUE);
+        if(file->file_handle!=H5FI_INVALID_FILE) {
+	   H5FI_CLOSE(file->file_handle);
+	}
+	H5F_dest (file);
+        if(H5Aremove_atom(fid)==NULL) {
+	   HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+	}
+      } /* end if */
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+    FUNC_LEAVE(H5F_mask, ID_H5Fclose, ret_value);
+} /* end H5Fclose() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_block_read
+ *
+ * Purpose:	Reads some data from a file/server/etc into a buffer.
+ *		The data is contiguous.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_block_read (hdf5_file_t *f, off_t addr, size_t size, void *buf)
+{
+    CONSTR(FUNC, "H5F_block_read");       /* for HERROR */
+
+    PABLO_TRACE_ON(H5F_mask, ID_H5F_block_read);
+
+    if (0==size) return 0;
+    addr += f->file_create_parms.userblock_size;
+   
+    if (H5FI_SEEK (f->file_handle, addr)<0)
+        HRETURN_ERROR(H5E_IO, H5E_SEEKERROR, FAIL);
+    if (H5FI_READ (f->file_handle, buf, size)<0)
+        HRETURN_ERROR(H5E_IO, H5E_READERROR, FAIL);
+    PABLO_TRACE_OFF(H5F_mask, ID_H5F_block_read);
+    return SUCCEED;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5F_block_write
+ *
+ * Purpose:	Writes some data from memory to a file/server/etc.  The
+ *		data is contiguous.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_block_write (hdf5_file_t *f, off_t addr, size_t size, void *buf)
+{
+    CONSTR(FUNC, "H5F_block_write");       /* for HERROR */
+     
+    PABLO_TRACE_ON(H5F_mask, ID_H5F_block_read);
+
+    if (0==size) return 0;
+    addr += f->file_create_parms.userblock_size;
+
+    if (H5FI_SEEK (f->file_handle, addr)<0)
+        HRETURN_ERROR(H5E_IO, H5E_SEEKERROR, FAIL);
+    if (H5FI_WRITE (f->file_handle, buf, size)<0)
+        HRETURN_ERROR(H5E_IO, H5E_WRITEERROR, FAIL);
+    PABLO_TRACE_OFF(H5F_mask, ID_H5F_block_write);
+    return SUCCEED;
+}
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
new file mode 100644
index 0000000..2151b29
--- /dev/null
+++ b/src/H5Fprivate.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains macros & information for file access
+ */
+
+#ifndef HDF5FILE_H
+#define HDF5FILE_H
+
+#include "H5Fproto.h"   /* Include Public Definitions */
+
+	     /*****************************************/
+	     /*** This is the top level header file ***/
+	     /*** and shouldn't depend on any other ***/
+	     /*** packages!                         ***/
+	     /*****************************************/
+
+
+
+#define SIZEOF_OFFSET(F) ((F)->file_create_parms.offset_size)
+#define SIZEOF_SIZE(F)	((F)->file_create_parms.length_size)
+
+/* Size of the default error stack for file IDs */
+#define HDF5_FILE_ERRSTACK  16
+
+/* Define the structure to store the file information for HDF5 files */
+typedef struct {
+    char *dir;              /* Directory the file is located within */
+    char *filename;         /* Filename of file */
+    uintn acc_perm;         /* Access Permissions for file */
+    hdf_file_t file_handle; /* File handle for actual I/O */
+    int32 file_err;         /* Error stack ID for this file */
+    uintn ref_count;        /* Reference count for number of times file is opened */
+    uint32 consist_flags;   /* File Consistency Flags */
+    size_t smallobj_off;    /* Offset of small-object heap within the file */
+    size_t freespace_off;   /* Offset of free-space info within the file */
+    size_t logical_len;     /* Logical length of file */
+    struct H5AC_cache_t *cache; /* The object cache */
+    file_create_temp_t file_create_parms;    /* File-creation template parameters */
+#ifdef LATER
+    file_access_temp_t file_access_parms;    /* File-access template parameters */
+#endif /* LATER */
+    struct H5G_entry_t *root_sym; /* Extra for the root symbol in the file */
+  } hdf5_file_t;
+
+/* Define a macro to ease calculation of the symbol-table entry size */
+#define H5F_symbol_table_size(f) (4+    /* "Symbol-type" bytes */   \
+    f->file_create_parms.offset_size+      /* Offset bytes */  \
+    f->file_create_parms.length_size+      /* Length bytes */  \
+    4+                                  /* Name offset in local heap */ \
+    24)                                 /* "Scratch" space */   \
+
+#ifdef NOT_YET
+#define H5F_encode_offset(f,p,o) (f->file_create_parms.offset_size==4 ? UINT32ENCODE(p,o) \
+    : f->file_create_parms.offset_size==8 ? UINT64ENCODE(p,o) \
+    : f->file_create_parms.offset_size==2 ? UINT16ENCODE(p,o) \
+    : H5FPencode_unusual_offset(f,&(p),(uint8 *)&(o)))
+#else /* NOT_YET */
+#define H5F_encode_offset(f,p,o) switch(f->file_create_parms.offset_size) { case 4: UINT32ENCODE(p,o); break;\
+    case 8: UINT64ENCODE(p,o); break;\
+    case 2: UINT16ENCODE(p,o); break;}
+#endif /* NOT_YET */
+#define H5F_decode_offset(f,p,o) switch(f->file_create_parms.offset_size) { case 4: UINT32DECODE(p,o); break;\
+    case 8: UINT64DECODE(p,o); break;\
+    case 2: UINT16DECODE(p,o); break;}
+
+#ifdef NOT_YET
+#define H5F_encode_length(f,p,l) (f->file_create_parms.length_size==4 ? UINT32ENCODE(p,l) \
+    : f->file_create_parms.length_size==8 ? UINT64ENCODE(p,l) \
+    : f->file_create_parms.length_size==2 ? UINT16ENCODE(p,l) : H5FPencode_unusual_length(f,&(p),(uint8 *)&(l)))
+#else /* NOT_YET */
+#define H5F_encode_length(f,p,l) switch(f->file_create_parms.length_size) { case 4: UINT32ENCODE(p,l); break;\
+    case 8: UINT64ENCODE(p,l); break;\
+    case 2: UINT16ENCODE(p,l); break;}
+#endif /* NOT_YET */
+
+#define H5F_decode_length(f,p,l) switch(f->file_create_parms.length_size) { case 4: UINT32DECODE(p,l); break;\
+    case 8: UINT64DECODE(p,l); break;\
+    case 2: UINT16DECODE(p,l); break;}
+
+/* Private functions, not part of the publicly documented API */
+void H5F_encode_length_unusual(const hdf5_file_t *f, uint8 **p, uint8 *l);
+void H5F_encode_offset_unusual(const hdf5_file_t *f, uint8 **p, uint8 *o);
+intn H5F_compare_filename(const VOIDP obj, const VOIDP key);
+herr_t H5F_block_read (hdf5_file_t *f, off_t addr, size_t size, void *buf);
+herr_t H5F_block_write (hdf5_file_t *f, off_t addr, size_t size, void *buf);
+
+#endif /* HDF5FILE_H */
+
diff --git a/src/H5Fproto.h b/src/H5Fproto.h
new file mode 100644
index 0000000..0600179
--- /dev/null
+++ b/src/H5Fproto.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5F module
+ */
+
+#ifndef H5FPROTO_H
+#define H5FPROTO_H
+
+/* file access codes */
+#define H5ACC_WRITE         0x0001  /* User in H5Fopen to open a file with write access */
+#define H5ACC_OVERWRITE     0x0002  /* User in H5Fcreate truncate an existing file */
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5F.c */
+hbool_t H5Fis_hdf5(const char *filename);
+hatom_t H5Fcreate(const char *filename, uintn flags, hatom_t create_template, hatom_t access_template);
+hatom_t H5Fopen(const char *filename, uintn flags, hatom_t access_template);
+herr_t H5Fclose(hatom_t fid);
+hatom_t H5Fget_create_template(hatom_t fid);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5FPROTO_H */
+
diff --git a/src/H5G.c b/src/H5G.c
new file mode 100644
index 0000000..fafecac
--- /dev/null
+++ b/src/H5G.c
@@ -0,0 +1,196 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5G.c
+ * 			Jul 18 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+
+#include "hdf5.h"
+
+/* Packages needed by this file... */
+#include "H5Gprivate.h"
+
+/* PRIVATE PROTOTYPES */
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_decode_vec
+ *
+ * Purpose:	Same as H5G_decode() except it does it for an array of
+ *		symbol table entries.
+ *
+ * Return:	Success:	0, with *pp pointing to the first byte
+ *				after the last symbol.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n)
+{
+   intn		i;
+
+   for (i=0; i<n; i++) {
+      if (H5G_decode (f, pp, ent+i)<0) return -1;
+   }
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_decode
+ *
+ * Purpose:	Decodes a symbol table entry pointed to by `*pp'.
+ *
+ * Return:	Success:	0 with *pp pointing to the first byte
+ *				following the symbol table entry.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent)
+{
+   uint8	*p_ret = *pp;
+   
+   H5F_decode_offset (f, *pp, ent->name_off);
+   H5F_decode_offset (f, *pp, ent->header);
+   UINT32DECODE (*pp, ent->type);
+
+   switch (ent->type) {
+   case H5G_NOTHING_CACHED:
+      break;
+
+   case H5G_CACHED_SDATA:
+      UINT32DECODE (*pp, ent->cache.sdata.nt);
+      UINT32DECODE (*pp, ent->cache.sdata.ndim);
+      UINT32DECODE (*pp, ent->cache.sdata.dim[0]);
+      UINT32DECODE (*pp, ent->cache.sdata.dim[1]);
+      UINT32DECODE (*pp, ent->cache.sdata.dim[2]);
+      UINT32DECODE (*pp, ent->cache.sdata.dim[3]);
+      break;
+
+   case H5G_CACHED_SYMTAB:
+      UINT32DECODE (*pp, ent->cache.symtab.btree);
+      UINT32DECODE (*pp, ent->cache.symtab.heap);
+      break;
+
+   default:
+      abort();
+   }
+
+   *pp = p_ret + 2*SIZEOF_OFFSET(f) + 4 + 24;
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_encode_vec
+ *
+ * Purpose:	Same as H5G_encode() except it does it for an array of
+ *		symbol table entries.
+ *
+ * Return:	Success:	0, with *pp pointing to the first byte
+ *				after the last symbol.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n)
+{
+   intn		i;
+
+   for (i=0; i<n; i++) {
+      if (H5G_encode (f, pp, ent+i)<0) return -1;
+   }
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_encode
+ *
+ * Purpose:	Encodes the specified symbol table entry into the buffer
+ *		pointed to by *pp.
+ *
+ * Return:	Success:	0, with *pp pointing to the first byte
+ *				after the symbol table entry.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 18 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent)
+{
+   uint8	*p_ret = *pp;
+
+   H5F_encode_offset (f, *pp, ent->name_off);
+   H5F_encode_offset (f, *pp, ent->header);
+   UINT32ENCODE (*pp, ent->type);
+
+   switch (ent->type) {
+   case H5G_NOTHING_CACHED:
+      break;
+
+   case H5G_CACHED_SDATA:
+      UINT32ENCODE (*pp, ent->cache.sdata.nt);
+      UINT32ENCODE (*pp, ent->cache.sdata.ndim);
+      UINT32ENCODE (*pp, ent->cache.sdata.dim[0]);
+      UINT32ENCODE (*pp, ent->cache.sdata.dim[1]);
+      UINT32ENCODE (*pp, ent->cache.sdata.dim[2]);
+      UINT32ENCODE (*pp, ent->cache.sdata.dim[3]);
+      break;
+
+   case H5G_CACHED_SYMTAB:
+      UINT32ENCODE (*pp, ent->cache.symtab.btree);
+      UINT32ENCODE (*pp, ent->cache.symtab.heap);
+      break;
+
+   default:
+      abort();
+   }
+
+   *pp = p_ret + 2*SIZEOF_OFFSET(f) + 4 + 24;
+   return 0;
+}
+
diff --git a/src/H5Gnode.c b/src/H5Gnode.c
new file mode 100644
index 0000000..733e637
--- /dev/null
+++ b/src/H5Gnode.c
@@ -0,0 +1,661 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		snode.c
+ * 			Jun 26 1997
+ * 			Robb Matzke <matzke@llnl.gov>
+ *
+ * Purpose:		Functions for handling symbol table nodes.  A
+ *			symbol table node is a small collection of symbol
+ *			table entries.  A B-tree usually points to the
+ *			symbol table nodes for any given symbol table.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "hdf5.h"
+
+/* Packages needed by this file... */
+#include "H5ACprivate.h"		/*cache				*/
+#include "H5Bprivate.h"			/*B-link trees			*/
+#include "H5Gprivate.h"			/*me				*/
+#include "H5Hprivate.h"			/*heap				*/
+#include "H5MFprivate.h"		/*file memory management	*/
+#include "H5MMprivate.h"		/*core memory management	*/
+
+/* PRIVATE PROTOTYPES */
+static void H5G_node_decode_key (hdf5_file_t *f, uint8 *raw, void *_key);
+static void H5G_node_encode_key (hdf5_file_t *f, uint8 *raw, void *_key);
+static size_t H5G_node_size (hdf5_file_t *f);
+static off_t H5G_node_new (hdf5_file_t *f, void *_lt_key, void *_udata,
+			   void *_rt_key);
+static herr_t H5G_node_flush (hdf5_file_t *f, hbool_t destroy, off_t addr,
+			      H5G_node_t *sym);
+static H5G_node_t *H5G_node_load (hdf5_file_t *f, off_t addr,
+				  const void *_data);
+static intn H5G_node_cmp (hdf5_file_t *f, void *_lt_key, void *_udata,
+			  void *_rt_key);
+static herr_t H5G_node_found (hdf5_file_t *f, off_t addr, void *_lt_key,
+			      void *_udata, void *_rt_key);
+static off_t H5G_node_insert (hdf5_file_t *f, off_t addr, intn *anchor,
+			      void *_lt_key, hbool_t *lt_key_changed,
+			      void *_md_key, void *_udata,
+			      void *_rt_key, hbool_t *rt_key_changed);
+static herr_t H5G_node_list (hdf5_file_t *f, off_t addr, void *_udata);
+static size_t H5G_node_sizeof_rkey (hdf5_file_t *f);
+
+/* H5G inherits cache-like properties from H5AC */
+static const H5AC_class_t H5AC_SNODE[1] = {{
+      (void*(*)(hdf5_file_t*,off_t,const void*))H5G_node_load,
+      (herr_t(*)(hdf5_file_t*,hbool_t,off_t,void*))H5G_node_flush,
+}};
+
+/* H5G inherits B-tree like properties from H5B */
+static const H5B_class_t H5B_SNODE[1] = {{
+   0,						/*id			*/
+   64,						/*k			*/
+   sizeof (H5G_node_key_t),			/*sizeof_nkey		*/
+   H5G_node_sizeof_rkey,			/*get_sizeof_rkey	*/
+   H5G_node_new,				/*new			*/
+   H5G_node_cmp,				/*cmp			*/
+   H5G_node_found,				/*found			*/
+   H5G_node_insert,				/*insert		*/
+   H5G_node_list,				/*list			*/
+   H5G_node_decode_key,				/*decode		*/
+   H5G_node_encode_key,				/*encode		*/
+}};
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_sizeof_rkey
+ *
+ * Purpose:	Returns the size of a raw B-link tree key for the specified
+ *		file.
+ *
+ * Return:	Success:	Size of the key.
+ *
+ *		Failure:	never fails
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 14 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5G_node_sizeof_rkey (hdf5_file_t *f)
+{
+   return SIZEOF_OFFSET(f);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_decode_key
+ *
+ * Purpose:	Decodes a raw key into a native key.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  8 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void
+H5G_node_decode_key (hdf5_file_t *f, uint8 *raw, void *_key)
+{
+   H5G_node_key_t	*key = (H5G_node_key_t *)_key;
+
+   H5F_decode_offset (f, raw, key->offset);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_encode_key
+ *
+ * Purpose:	Encodes a native key into a raw key.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul  8 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void
+H5G_node_encode_key (hdf5_file_t *f, uint8 *raw, void *_key)
+{
+   H5G_node_key_t	*key = (H5G_node_key_t *)_key;
+
+   H5F_encode_offset (f, raw, key->offset);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_size
+ *
+ * Purpose:	Returns the total size of a symbol table node.
+ *
+ * Return:	Success:	Total size of the node in bytes.
+ *
+ *		Failure:	Never fails.
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5G_node_size (hdf5_file_t *f)
+{
+   return H5G_HDR_SIZE(f) + (2*H5G_NODE_K) * (2*SIZEOF_OFFSET(f));
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_new
+ *
+ * Purpose:	Creates a new empty symbol table.  This function is called
+ *		by the B-tree insert function for an empty tree.  It is
+ *		also called internally to split a symbol node with
+ *		LT_KEY and RT_KEY null pointers.
+ *
+ * Return:	Success:	Address of symbol table node.
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static off_t
+H5G_node_new (hdf5_file_t *f, void *_lt_key, void *_udata, void *_rt_key)
+{
+   H5G_node_key_t	*lt_key = (H5G_node_key_t*)_lt_key;
+   H5G_node_key_t	*rt_key = (H5G_node_key_t*)_rt_key;
+   H5G_node_t		*sym = H5MM_xcalloc (1, sizeof(H5G_node_t));
+   size_t		size = H5G_node_size (f);
+   off_t		addr = H5MF_alloc (f, size);
+
+   sym->dirty = 1;
+   sym->entry = H5MM_xcalloc (2 * H5G_NODE_K, sizeof(H5G_entry_t));
+   H5AC_set (f, H5AC_SNODE, addr, sym);
+
+   /*
+    * The left and right symbols in an empty tree are both the
+    * empty string stored at offset zero by the symtab.c functions. This
+    * allows the comparison functions to work correctly without knowing
+    * that there are no symbols.
+    */
+   if (lt_key) lt_key->offset = 0;
+   if (rt_key) rt_key->offset = 0;
+   return addr;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_flush
+ *
+ * Purpose:	Flush a symbol table node to disk.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5G_node_flush (hdf5_file_t *f, hbool_t destroy, off_t addr, H5G_node_t *sym)
+{
+   uint8	*buf=NULL, *p=NULL;
+   size_t	size;
+
+   if (sym->dirty) {
+      size = H5G_node_size (f);
+      buf = p = H5MM_xmalloc (size);
+
+      /* magic number */
+      HDmemcpy (p, H5G_NODE_MAGIC, 4);
+      p += 4;
+
+      /* version number */
+      *p++ = H5G_NODE_VERS;
+
+      /* reserved */
+      *p++ = 0;
+
+      /* number of symbols */
+      UINT16ENCODE (p, sym->nsyms);
+
+      /* entries */
+      H5G_encode_vec (f, &p, sym->entry, sym->nsyms);
+
+      
+      H5F_block_write (f, addr, p-buf, buf);
+      buf = H5MM_xfree (buf);
+   }
+
+   if (destroy) {
+      sym->entry = H5MM_xfree (sym->entry);
+      H5MM_xfree (sym);
+   }
+
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_load
+ *
+ * Purpose:	Loads a symbol table from the file.
+ *
+ * Return:	Success:	Ptr to the new table.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static H5G_node_t *
+H5G_node_load (hdf5_file_t *f, off_t addr, const void *_udata)
+{
+   H5G_node_t	*sym = H5MM_xcalloc (1, sizeof(H5G_node_t));
+   size_t	size = H5G_node_size (f);
+   uint8	*buf = H5MM_xmalloc (size);
+   uint8	*p = buf;
+   
+
+   sym->entry = H5MM_xcalloc (2*H5G_NODE_K, sizeof(H5G_entry_t));
+   H5F_block_read (f, addr, size, buf);
+
+   /* magic */
+   if (HDmemcmp (p, H5G_NODE_MAGIC, 4)) goto error;
+   p += 4;
+
+   /* version */
+   if (H5G_NODE_VERS!=*p++) goto error;
+
+   /* reserved */
+   p++;
+
+   /* number of symbols */
+   UINT16DECODE (p, sym->nsyms);
+
+   /* entries */
+   H5G_decode_vec (f, &p, sym->entry, sym->nsyms);
+
+   H5MM_xfree (buf);
+   return sym;
+
+error:
+   H5MM_xfree (buf);
+   H5MM_xfree (sym);
+   return NULL;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_cmp
+ *
+ * Purpose:	Compares two keys from a B-tree node (LEFT and RIGHT)
+ *		against another key (not necessarily the same type)
+ *		pointed to by UDATA.
+ *
+ * Return:	Success:	negative if the UDATA key is less than
+ *				or equal to the LEFT key.
+ *
+ * 				positive if the UDATA key is greater
+ *				than the RIGHT key.
+ *
+ * 				zero if the UDATA key falls between
+ *				the LEFT key (exclusive) and the
+ *				RIGHT key (inclusive).
+ *
+ *		Failure:	Never fails
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static intn
+H5G_node_cmp (hdf5_file_t *f, void *_lt_key, void *_udata, void *_rt_key)
+{
+   H5G_node_ud1_t	*udata = (H5G_node_ud1_t *)_udata;
+   H5G_node_key_t	*lt_key = (H5G_node_key_t *)_lt_key;
+   H5G_node_key_t	*rt_key = (H5G_node_key_t *)_rt_key;
+   const char		*s;
+
+   /* left side */
+   s = H5H_peek (f, udata->heap, lt_key->offset);
+   if (HDstrcmp (udata->name, s)<=0) return -1;
+
+   /* right side */
+   s = H5H_peek (f, udata->heap, rt_key->offset);
+   if (HDstrcmp (udata->name, s)>0) return 1;
+
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_found
+ *
+ * Purpose:	The B-tree search engine has found the symbol table node
+ *		which contains the requested symbol if the symbol exists.
+ *		This function should examine that node for the symbol and
+ *		return information about the symbol through the UDATA
+ *		structure which contains the symbol name on function
+ *		entry.
+ *
+ * Return:	Success:	0 if found and data returned through the
+ *				UDATA pointer.
+ *
+ *		Failure:	-1 if not found.
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 23 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5G_node_found (hdf5_file_t *f, off_t addr, void *_lt_key, void *_udata,
+		void *_rt_key)
+{
+   H5G_node_ud1_t	*udata = (H5G_node_ud1_t *)_udata;
+   H5G_node_t		*sn;
+   intn			lt=0, idx=0, rt, cmp=1;
+   const char		*s;
+
+   sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+   if (!sn) return -1;
+   rt = sn->nsyms;
+
+   /*
+    * Binary search.
+    */
+   while (lt<rt && cmp) {
+      idx = (lt + rt) / 2;
+      sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+      s = H5H_peek (f, udata->heap, sn->entry[idx].name_off);
+      cmp = HDstrcmp (udata->name, s);
+      
+      if (cmp<0) {
+	 rt = idx;
+      } else {
+	 lt = idx+1;
+      }
+   }
+   if (cmp) return -1;
+
+   udata->entry = sn->entry[idx];
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_insert
+ *
+ * Purpose:	The B-tree insertion engine has found the symbol table node
+ *		which should receive the new symbol/address pair.  This
+ *		function adds it to that node unless it already existed.
+ *
+ * 		If the node has no room for the symbol then the node is
+ *		split into two nodes.  The original node contains the
+ *		low values and the new node contains the high values.
+ *		The new symbol table entry is added to either node as
+ *		appropriate.  When a split occurs, this function will
+ *	        write the maximum key of the low node to the MID buffer
+ *		and return the address of the new node.
+ *
+ * 		If the new key is larger than RIGHT then update RIGHT
+ *		with the new key.
+ *
+ * Return:	Success:	Address of new node if the node was
+ *				split.  MID has been initialized with
+ *				the high key of the left node, RIGHT
+ *				has the high key of the right node.
+ *
+ * 				Zero if the node didn't split.  RIGHT has the
+ *				high key of the right node.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 24 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static off_t
+H5G_node_insert (hdf5_file_t *f, off_t addr, intn *anchor,
+		 void *_lt_key, hbool_t *lt_key_changed,
+		 void *_md_key, void *_udata,
+		 void *_rt_key, hbool_t *rt_key_changed)
+{
+   H5G_node_key_t	*md_key = (H5G_node_key_t *)_md_key;
+   H5G_node_key_t	*rt_key = (H5G_node_key_t *)_rt_key;
+   H5G_node_ud1_t 	*udata = (H5G_node_ud1_t *)_udata;
+   
+   H5G_node_t		*sn;
+   H5G_entry_t 		ent[2*H5G_NODE_K];
+   off_t		new_node=0, offset;
+   const char		*s;
+   intn			idx=-1, nsyms, cmp=1;
+   intn			lt=0, rt;		/*binary search cntrs	*/
+
+   /*
+    * Symbol tables are always split so the new symbol table node is
+    * to the right of the old one.
+    */
+   *anchor = H5B_ANCHOR_LT;
+   *lt_key_changed = FALSE;
+   *rt_key_changed = FALSE;
+
+   /*
+    * Load the symbol node and buffer the entries so we don't have to
+    * worry about the cached value disappearing.
+    */
+   sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+   if (!sn) return -1;
+   HDmemcpy (ent, sn->entry, sn->nsyms * sizeof(H5G_entry_t));
+   rt = nsyms = sn->nsyms;
+   sn = NULL;
+
+   /*
+    * Where does the new symbol get inserted?  We use a binary search.
+    */
+   while (lt<rt) {
+      idx = (lt + rt) / 2;
+      s = H5H_peek (f, udata->heap, ent[idx].name_off);
+      if (0==(cmp=HDstrcmp (udata->name, s))) return -1; /*already present*/
+      if (cmp<0) {
+	 rt = idx;
+      } else {
+	 lt = idx+1;
+      }
+   }
+   idx += cmp>0 ? 1 : 0;
+
+   /*
+    * Add the new name to the heap.  The caller will check if the
+    * heap address changed and update the symbol table object header
+    * with the new heap address.
+    */
+   offset = H5H_insert (f, udata->heap, strlen(udata->name)+1, udata->name);
+
+   if (nsyms>=2*H5G_NODE_K) {
+      /*
+       * The node is full.  Split it into a left and right
+       * node and return the address of the new right node (the
+       * left node is at the same address as the original node).
+       */
+      
+      /* The left node */
+      sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+      HDmemset (sn->entry+H5G_NODE_K, 0, H5G_NODE_K*sizeof(H5G_entry_t));
+      sn->nsyms = H5G_NODE_K;
+      sn->dirty += 1;
+      
+      if (idx<=H5G_NODE_K) {
+	 memmove (sn->entry+idx+1, sn->entry+idx,
+		  (H5G_NODE_K-idx) * sizeof(H5G_entry_t));
+	 sn->entry[idx] = udata->entry;
+	 sn->entry[idx].name_off = offset;
+	 sn->nsyms += 1;
+      }
+      
+      /* The middle key */
+      md_key->offset = sn->entry[sn->nsyms-1].name_off;
+
+      /* The right node */
+      new_node = H5G_node_new (f, NULL, NULL, NULL);
+      sn = H5AC_find (f, H5AC_SNODE, new_node, NULL);
+      HDmemcpy (sn->entry, ent+H5G_NODE_K,
+		H5G_NODE_K*sizeof(H5G_entry_t));
+      sn->nsyms = H5G_NODE_K;
+      sn->dirty += 1;
+
+      if (idx>H5G_NODE_K) {
+	 idx -= H5G_NODE_K;
+	 HDmemmove (sn->entry+idx+1, sn->entry+idx,
+		    (H5G_NODE_K-idx) * sizeof (H5G_entry_t));
+	 sn->entry[idx] = udata->entry;
+	 sn->entry[idx].name_off = offset;
+	 sn->nsyms += 1;
+
+	 if (idx+1==sn->nsyms) {
+	    rt_key->offset = offset;
+	    *rt_key_changed = TRUE;
+	 }
+      }
+      
+   } else {
+      /*
+       * Add the new symbol to the node.
+       */
+      sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+      sn->dirty += 1;
+      HDmemmove (sn->entry+idx+1, sn->entry+idx,
+		 (sn->nsyms-idx) * sizeof (H5G_entry_t));
+      sn->nsyms += 1;
+      sn->entry[idx] = udata->entry;
+      sn->entry[idx].name_off = offset;
+
+      if (idx+1==sn->nsyms) {
+	 rt_key->offset = offset;
+	 *rt_key_changed = TRUE;
+      }
+   }
+
+   return new_node;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5G_node_list
+ *
+ * Purpose:	This function gets called during a directory list operation.
+ *		It should fill in data in the UDATA struct.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jun 24 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5G_node_list (hdf5_file_t *f, off_t addr, void *_udata)
+{
+   H5G_node_list_t	*udata = (H5G_node_list_t *)_udata;
+   H5G_entry_t 		*ent;
+   intn			i, nsyms;
+   const char 		*s;
+   H5G_node_t		*sn;
+
+   /*
+    * Read the symbol table and save the entry info.  We save it
+    * in a separate buffer if names are requested because the name
+    * lookup may invalidate the symbol table.
+    */
+   sn = H5AC_find (f, H5AC_SNODE, addr, NULL);
+   if (!sn) return -1;
+   nsyms = sn->nsyms;
+   if (udata->name) {
+      ent = H5MM_xmalloc (nsyms * sizeof(H5G_entry_t));
+      HDmemcpy (ent, sn->entry, nsyms*sizeof(H5G_entry_t));
+      sn = NULL;
+   } else {
+      ent = sn->entry;
+   }
+
+   /*
+    * Gather the info.
+    */
+   if (udata->name || udata->entry) {
+      for (i=0; i<nsyms && udata->nused<udata->nentries; i++) {
+	 if (udata->name) {
+	    s = H5H_peek (f, udata->heap, ent[i].name_off);
+	    udata->name[udata->nused] = H5MM_xstrdup (s);
+	 }
+	 if (udata->entry) {
+	    udata->entry[udata->nused] = ent[i];
+	 }
+	 udata->nused += 1;
+      }
+   } else {
+      udata->nused += sn->nsyms;
+   }
+
+   if (!sn) H5MM_xfree (ent);
+   return 0;
+}
+
diff --git a/src/H5Gprivate.h b/src/H5Gprivate.h
new file mode 100644
index 0000000..3316771
--- /dev/null
+++ b/src/H5Gprivate.h
@@ -0,0 +1,125 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Gprivate.h
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Private stuff for the H5G package (symbol tables).
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Gprivate_H
+#define _H5Gprivate_H
+
+#include "H5Gproto.h"		/*include public declarations		*/
+
+#include "H5Fprivate.h"		/*include packages needed by this header*/
+
+#define H5G_NODE_MAGIC	"SNOD"	/*symbol table node magic number	*/
+#define H5G_NODE_VERS	1	/*symbol table node version number	*/
+#define H5G_NODE_K	64	/*min degree.  max degree is twice this	*/
+#define H5G_HDR_SIZE(F)	8
+
+/*
+ * Various types of object header information can be cached in a symbol
+ * table entry (it's normal home is the object header to which the entry
+ * points).  This datatype determines what (if anything) is cached in the
+ * symbol table entry.
+ */
+typedef enum H5G_type_t {
+   H5G_NOTHING_CACHED		=0,	/*nothing is cached		*/
+   H5G_CACHED_SDATA		=1,	/*simple dataset, `sdata'	*/
+   H5G_CACHED_SYMTAB		=2 	/*symbol table, `symtab'	*/
+} H5G_type_t;
+
+/*
+ * A symbol table entry.  The two important fields are `name_off' and
+ * `header'.  The remaining fields are used for caching information that
+ * also appears in the object header to which this symbol table entry
+ * points.
+ */
+typedef struct H5G_entry_t {
+   off_t	name_off;	/*offset of name within name heap	*/
+   off_t	header;		/*file address of object header		*/
+   H5G_type_t	type;		/*type of information cached		*/
+
+   union {
+      struct {
+	 uint32	nt;		/*number type				*/
+	 uint32 ndim;		/*number of dimensions			*/
+	 uint32 dim[4];		/*dimension sizes			*/
+      } sdata;
+
+      struct {
+	 off_t	btree;		/*file address of symbol table B-tree	*/
+	 off_t	heap;		/*file address of symtab name heap	*/
+      } symtab;
+   } cache;			/*cached data from object header	*/
+} H5G_entry_t;
+
+/*
+ * A symbol table node is a collection of symbol table entries.  It can
+ * be thought of as the lowest level of the B-link tree that points to
+ * a collection of symbol table entries that belong to a specific symbol
+ * table or directory.
+ */
+typedef struct H5G_node_t {
+   int		dirty;		/*has cache been modified?		*/
+   int		nsyms;		/*number of symbols			*/
+   H5G_entry_t	*entry;		/*symbol table entries			*/
+} H5G_node_t;
+
+/*
+ * Each key field of the B-link tree that points to symbol table
+ * nodes consists of this structure...
+ */
+typedef struct H5G_node_key_t {
+   off_t	offset;		/*offset into heap for name		*/
+} H5G_node_key_t;
+
+/*
+ * Data exchange structure for symbol table nodes.  This structure is
+ * passed through the B-link tree layer to the methods for the objects
+ * to which the B-link tree points.
+ */
+typedef struct H5G_node_ud1_t {
+
+   /* downward */
+   char		*name;		/*points to temporary memory		*/
+   off_t	heap;		/*symbol table heap address		*/
+
+   /* upward */
+   H5G_entry_t	entry;		/*symbol table entry			*/
+
+} H5G_node_ud1_t;
+
+typedef struct H5G_node_list_t {
+
+   /* downward */
+   H5G_entry_t	*entry;		/*array of entries, alloc'd by caller	*/
+   char		**name;		/*array of string ptrs, allocd by caller*/
+   intn		nentries;	/*size of the ADDR and NAME arrays	*/
+   off_t	heap;		/*heap address				*/
+
+   /* upward */
+   intn		nused;		/*num. symbols processed		*/
+   
+} H5G_node_list_t;
+
+/*
+ * Library prototypes...
+ */
+herr_t H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
+herr_t H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
+herr_t H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
+herr_t H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
+
+
+#endif
+
diff --git a/src/H5Gproto.h b/src/H5Gproto.h
new file mode 100644
index 0000000..5c7a66d
--- /dev/null
+++ b/src/H5Gproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Gproto.h
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Prototypes for the H5G package (symbol tables).
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Gproto_H
+#define _H5Gproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5H.c b/src/H5H.c
new file mode 100644
index 0000000..39ec56b
--- /dev/null
+++ b/src/H5H.c
@@ -0,0 +1,653 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5H.c
+ * 			Jul 16 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Heap functions.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+#include "hdf5.h"
+
+#include "H5ACprivate.h"		/*cache				*/
+#include "H5Hprivate.h"			/*self				*/
+#include "H5MFprivate.h"		/*file memory management	*/
+#include "H5MMprivate.h"		/*core memory management	*/
+
+#define H5H_MAGIC	"HEAP"		/*heap magic number		*/
+#define H5H_FREE_NULL	1		/*end of free list on disk	*/
+#define H5H_HDR_SIZE(F)	(4+SIZEOF_SIZE(F)+2*SIZEOF_OFFSET(F))
+#define H5H_SIZEOF_FREE(F) (SIZEOF_SIZE(F)+SIZEOF_OFFSET(F))
+
+typedef struct H5H_free_t {
+   off_t	offset;			/*offset of free block		*/
+   size_t	size;			/*size of free block		*/
+   struct H5H_free_t *prev;		/*previous entry in free list	*/
+   struct H5H_free_t *next;		/*next entry in free list	*/
+} H5H_free_t;
+
+typedef struct H5H_t {
+   intn		dirty;
+   off_t	addr;			/*address of data		*/
+   size_t	disk_alloc;		/*data bytes allocated on disk	*/
+   size_t	mem_alloc;		/*data bytes allocated in mem	*/
+   uint8	*chunk;			/*the chunk, including header	*/
+   H5H_free_t	*freelist;		/*the free list			*/
+} H5H_t;
+
+static H5H_t *H5H_load (hdf5_file_t *f, off_t addr, const void *udata);
+static herr_t H5H_flush (hdf5_file_t *f, hbool_t dest, off_t addr,
+			 H5H_t *heap);
+
+/*
+ * H5H inherits cache-like properties from H5AC
+ */
+static const H5AC_class_t H5AC_HEAP[1] = {{
+   (void*(*)(hdf5_file_t*,off_t,const void*))H5H_load,
+   (herr_t(*)(hdf5_file_t*,hbool_t,off_t,void*))H5H_flush,
+}};
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_new
+ *
+ * Purpose:	Creates a new heap data structure on disk and caches it
+ *		in memory.  SIZE_HINT is a hint for the initial size of the
+ *		data area of the heap.  If size hint is invalid then a
+ *		reasonable (but probably not optimal) size will be chosen.
+ *		If the heap ever has to grow, then REALLOC_HINT is the
+ *		minimum amount by which the heap will grow.
+ *
+ * Return:	Success:	File address of new heap.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 16 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+off_t
+H5H_new (hdf5_file_t *f, size_t size_hint)
+{
+   H5H_t	*heap = NULL;
+   size_t	total_size;		/*total heap size on disk	*/
+   off_t	addr;			/*heap file address		*/
+   
+   assert (f);
+   size_hint = MAX (0, size_hint);
+   if (size_hint && size_hint<H5H_SIZEOF_FREE(f)) {
+      size_hint = H5H_SIZEOF_FREE(f);
+   }
+
+   /* allocate file version */
+   total_size = H5H_HDR_SIZE(f) + size_hint;
+   if ((addr = H5MF_alloc (f, total_size))<0) return -1;
+
+   /* allocate memory version */
+   heap = H5MM_xcalloc (1, sizeof(H5H_t));
+   heap->addr = addr + H5H_HDR_SIZE(f);
+   heap->disk_alloc = size_hint;
+   heap->mem_alloc = size_hint;
+   heap->chunk = H5MM_xmalloc (H5H_HDR_SIZE(f) + size_hint);
+
+   /* free list */
+   if (size_hint) {
+      heap->freelist = H5MM_xmalloc (sizeof(H5H_free_t));
+      heap->freelist->offset = 0;
+      heap->freelist->size = size_hint;
+      heap->freelist->prev = heap->freelist->next = NULL;
+   } else {
+      heap->freelist = NULL;
+   }
+   
+   /* add to cache */
+   heap->dirty = 1;
+   H5AC_set (f, H5AC_HEAP, addr, heap);
+   
+   return addr;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_load
+ *
+ * Purpose:	Loads a heap from disk.
+ *
+ * Return:	Success:	Ptr to heap memory data structure.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 17 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static H5H_t *
+H5H_load (hdf5_file_t *f, off_t addr, const void *udata)
+{
+   uint8	hdr[20], *p;
+   H5H_t	*heap = H5MM_xcalloc (1, sizeof(H5H_t));
+   H5H_free_t	*fl=NULL, *tail=NULL;
+   off_t	free_block;
+
+   assert (addr>0);
+   assert (H5H_HDR_SIZE(f) <= sizeof hdr);
+   assert (!udata);
+
+   if (H5F_block_read (f, addr, H5H_HDR_SIZE(f), hdr)<0) goto error;
+   p = hdr;
+
+   /* magic number */
+   if (HDmemcmp (hdr, H5H_MAGIC, 4)) goto error;
+   p += 4;
+
+   /* heap data size */
+   H5F_decode_length (f, p, heap->disk_alloc);
+   heap->mem_alloc = heap->disk_alloc;
+
+   /* free list head */
+   H5F_decode_offset (f, p, free_block);
+   assert (-1==free_block || (free_block>=0 && free_block<heap->disk_alloc));
+
+   /* data */
+   H5F_decode_offset (f, p, heap->addr);
+   heap->chunk = H5MM_xmalloc (H5H_HDR_SIZE(f) + heap->mem_alloc);
+   if (heap->disk_alloc &&
+       H5F_block_read (f, heap->addr, heap->disk_alloc,
+		       heap->chunk + H5H_HDR_SIZE(f))<0) {
+      goto error;
+   }
+
+   /* free list */
+   while (H5H_FREE_NULL!=free_block) {
+      assert (free_block>=0 && free_block<heap->disk_alloc);
+      fl = H5MM_xmalloc (sizeof (H5H_free_t));
+      fl->offset = free_block;
+      fl->prev = tail;
+      fl->next = NULL;
+      if (tail) tail->next = fl;
+      tail = fl;
+      if (!heap->freelist) heap->freelist = fl;
+		   
+      p = heap->chunk + H5H_HDR_SIZE(f) + free_block;
+      H5F_decode_offset (f, p, free_block);
+      H5F_decode_length (f, p, fl->size);
+
+      assert (fl->offset + fl->size <= heap->disk_alloc);
+   }
+   return heap;
+
+error:
+   if (heap) {
+      heap->chunk = H5MM_xfree (heap->chunk);
+      H5MM_xfree (heap);
+   }
+   return NULL;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_flush
+ *
+ * Purpose:	Flushes a heap from memory to disk if it's dirty.  Optionally
+ *		deletes the heap from memory.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 17 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5H_flush (hdf5_file_t *f, hbool_t destroy, off_t addr, H5H_t *heap)
+{
+   uint8	*p = heap->chunk;
+   H5H_free_t	*fl = heap->freelist;
+   
+   if (heap->dirty) {
+
+      /*
+       * If the heap grew larger than disk storage then move the
+       * data segment of the heap to a larger contiguous block of
+       * disk storage.
+       */
+      if (heap->mem_alloc > heap->disk_alloc) {
+	 H5MF_free (f, heap->addr, heap->disk_alloc);
+	 heap->addr = H5MF_alloc (f, heap->mem_alloc);
+	 heap->disk_alloc = heap->mem_alloc;
+      }
+
+      /*
+       * Write the header.
+       */
+      HDmemcpy (p, H5H_MAGIC, 4); p += 4;
+      H5F_encode_length (f, p, heap->mem_alloc);
+      H5F_encode_offset (f, p, fl?fl->offset:-1);
+      H5F_encode_offset (f, p, heap->addr);
+
+      /*
+       * Write the free list.
+       */
+      while (fl) {
+	 p = heap->chunk + H5H_HDR_SIZE(f) + fl->offset;
+	 if (fl->next) {
+	    H5F_encode_offset (f, p, fl->next->offset);
+	 } else {
+	    H5F_encode_offset (f, p, H5H_FREE_NULL);
+	 }
+	 H5F_encode_length (f, p, fl->size);
+	 fl = fl->next;
+      }
+
+      /*
+       * Copy buffer to disk.
+       */
+      if (heap->addr == addr + H5H_HDR_SIZE(f)) {
+	 if (H5F_block_write (f, addr, H5H_HDR_SIZE(f)+heap->disk_alloc,
+			      heap->chunk)<0) {
+	    return -1;
+	 }
+      } else {
+	 if (H5F_block_write (f, addr, H5H_HDR_SIZE(f), heap->chunk)<0) {
+	    return -1;
+	 }
+	 if (H5F_block_write (f, heap->addr, heap->disk_alloc,
+			      heap->chunk + H5H_HDR_SIZE(f))<0) {
+	    return -1;
+	 }
+      }
+
+      heap->dirty = 0;
+   }
+
+   /*
+    * Should we destroy the memory version?
+    */
+   if (destroy) {
+      heap->chunk = H5MM_xfree (heap->chunk);
+      while (heap->freelist) {
+	 fl = heap->freelist;
+	 heap->freelist = fl->next;
+	 H5MM_xfree (fl);
+      }
+      H5MM_xfree (heap);
+   }
+
+   return 0;
+}
+      
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_read
+ *
+ * Purpose:	Reads some object (or part of an object) from the heap
+ *		whose address is ADDR in file F.  OFFSET is the byte offset
+ *		from the beginning of the heap at which to begin reading
+ *		and SIZE is the number of bytes to read.
+ *
+ * 		If BUF is the null pointer then a buffer is allocated by
+ *		this function.
+ *
+ * 	       	Attempting to read past the end of an object may cause this
+ *		function to fail.
+ *
+ * Return:	Success:	BUF (or the allocated buffer)
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 16 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5H_read (hdf5_file_t *f, off_t addr, off_t offset, size_t size, void *buf)
+{
+   H5H_t	*heap = H5AC_find (f, H5AC_HEAP, addr, NULL);
+
+   assert (offset>=0 && offset<heap->mem_alloc);
+   assert (offset+size<=heap->mem_alloc);
+
+   if (!buf) buf = H5MM_xmalloc (size);
+   HDmemcpy (buf, heap->chunk+H5H_HDR_SIZE(f)+offset, size);
+   return buf;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_peek
+ *
+ * Purpose:	This function is a more efficient version of H5H_read.
+ *		Instead of copying a heap object into a caller-supplied
+ *		buffer, this function returns a pointer directly into the
+ *		cache where the heap is being held.  Thus, the return pointer
+ *		is valid only until the next call to the cache.
+ *
+ * 		The address of the heap is ADDR in file F.  OFFSET is the
+ *		byte offset of the object from the beginning of the heap and
+ *		may include an offset into the interior of the object.
+ *
+ * Return:	Success:	Ptr to the object.  The pointer points to
+ *				a chunk of memory large enough to hold the
+ *				object from the specified offset (usually
+ *				the beginning of the object) to the end
+ *				of the object.  Do not attempt to read past
+ *				the end of the object.
+ *
+ *		Failure:	NULL
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 16 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+const void *
+H5H_peek (hdf5_file_t *f, off_t addr, off_t offset)
+{
+   H5H_t	*heap = H5AC_find (f, H5AC_HEAP, addr, NULL);
+
+   assert (offset>=0 && offset<heap->mem_alloc);
+   return heap->chunk+H5H_HDR_SIZE(f)+offset;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_remove_free
+ *
+ * Purpose:	Removes free list element FL from the specified heap.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 17 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void
+H5H_remove_free (H5H_t *heap, H5H_free_t *fl)
+{
+   if (fl->prev) fl->prev->next = fl->next;
+   if (fl->next) fl->next->prev = fl->prev;
+
+   if (!fl->prev) heap->freelist = fl->next;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_insert
+ *
+ * Purpose:	Inserts a new item into the heap.
+ *
+ * Return:	Success:	Offset of new item within heap.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 17 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+off_t
+H5H_insert (hdf5_file_t *f, off_t addr, size_t size, const void *buf)
+{
+   H5H_t	*heap = H5AC_find (f, H5AC_HEAP, addr, NULL);
+   H5H_free_t	*fl=NULL, *max_fl=NULL;
+   off_t	offset = -1;
+   size_t	need_more;
+
+   heap->dirty += 1;
+
+   /*
+    * Look for a free slot large enough for this object and which would
+    * leave zero or at least H5G_SIZEOF_FREE bytes left over.
+    */
+   for (fl=heap->freelist; fl; fl=fl->next) {
+      if (fl->size>size && fl->size-size>=H5H_SIZEOF_FREE(f)) {
+	 offset = fl->offset;
+	 fl->offset += size;
+	 fl->size -= size;
+	 break;
+      } else if (fl->size==size) {
+	 offset = fl->offset;
+	 H5H_remove_free (heap, fl);
+	 break;
+      } else if (!max_fl || max_fl->offset < fl->offset) {
+	 max_fl = fl;
+      }
+   }
+
+
+   /*
+    * If no free chunk was large enough, then allocate more space and
+    * add it to the free list.  If the heap ends with a free chunk, we
+    * can extend that free chunk.  Otherwise we'll have to make another
+    * free chunk.  If the heap must expand, we double its size.
+    */
+   if (offset<0) {
+
+      need_more = MAX (2*heap->mem_alloc, H5H_SIZEOF_FREE(f));
+      need_more = MAX (need_more, size);
+
+      if (max_fl && max_fl->offset+max_fl->size==heap->mem_alloc) {
+	 /*
+	  * Increase the size of the maximum free block.
+	  */
+	 offset = max_fl->offset;
+	 max_fl->offset += size;
+	 max_fl->size += need_more - size;
+
+	 if (max_fl->size < H5H_SIZEOF_FREE(f)) {
+	    if (max_fl->size) {
+	       fprintf (stderr, "H5H_insert: lost %d bytes at line %d\n",
+			max_fl->size, __LINE__);
+	    }
+	    H5H_remove_free (heap, max_fl);
+	 }
+	 
+      } else {
+	 /*
+	  * Create a new free list element large enough that we can
+	  * take some space out of it right away.
+	  */
+	 offset = heap->mem_alloc;
+	 if (need_more-size >= H5H_SIZEOF_FREE(f)) {
+	    fl = H5MM_xmalloc (sizeof(H5H_free_t));
+	    fl->offset = heap->mem_alloc + size;
+	    fl->size = need_more - size;
+	    fl->prev = NULL;
+	    fl->next = heap->freelist;
+	    if (heap->freelist) heap->freelist->prev = fl;
+	    heap->freelist = fl;
+	 } else if (need_more>size) {
+	    fprintf (stderr, "H5H_insert: lost %d bytes at line %d\n",
+		     need_more-size, __LINE__);
+	 }
+      }
+
+      fprintf (stderr, "H5H_insert: resize mem buf from %lu to %lu bytes\n",
+	       (unsigned long)(heap->mem_alloc),
+	       (unsigned long)(heap->mem_alloc + need_more));
+      heap->mem_alloc += need_more;
+      heap->chunk = H5MM_xrealloc (heap->chunk,
+				   H5H_HDR_SIZE(f)+heap->mem_alloc);
+   }
+
+   /*
+    * Copy the data into the heap
+    */
+   HDmemcpy (heap->chunk + H5H_HDR_SIZE(f) + offset, buf, size);
+   return offset;
+}
+   
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_write
+ *
+ * Purpose:	Writes (overwrites) the object (or part of object) stored
+ *		in BUF to the heap at file address ADDR in file F.  The
+ *		writing begins at byte offset OFFSET from the beginning of
+ *		the heap and continues for SIZE bytes.
+ *
+ * 		Do not partially write an object to create it;  the first
+ *		write for an object must be for the entire object.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 16 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5H_write (hdf5_file_t *f, off_t addr, off_t offset, size_t size,
+	   const void *buf)
+{
+   H5H_t	*heap = H5AC_find (f, H5AC_HEAP, addr, NULL);
+
+   assert (offset>=0 && offset<heap->mem_alloc);
+   assert (offset+size<=heap->mem_alloc);
+   assert (buf);
+
+   heap->dirty += 1;
+   HDmemcpy (heap->chunk+H5H_HDR_SIZE(f)+offset, buf, size);
+   return 0;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5H_remove
+ *
+ * Purpose:	Removes an object or part of an object from the heap at
+ *		address ADDR of file F.  The object (or part) to remove
+ *		begins at byte OFFSET from the beginning of the heap and
+ *		continues for SIZE bytes.
+ *
+ * 		Once part of an object is removed, one must not attempt
+ *		to access that part.  Removing the beginning of an object
+ *		results in the object OFFSET increasing by the amount
+ *		truncated.  Removing the end of an object results in
+ *		object truncation.  Removing the middle of an object results
+ *		in two separate objects, one at the original offset and
+ *		one at the first offset past the removed portion.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 16 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5H_remove (hdf5_file_t *f, off_t addr, off_t offset, size_t size)
+{
+   H5H_t	*heap = H5AC_find (f, H5AC_HEAP, addr, NULL);
+   H5H_free_t	*fl = heap->freelist, *fl2 = NULL;
+
+   assert (offset>=0 && offset<heap->mem_alloc);
+   assert (offset+size<=heap->mem_alloc);
+
+   heap->dirty += 1;
+
+   /*
+    * Check if this chunk can be prepended or appended to an already
+    * free chunk.  It might also fall between two chunks in such a way
+    * that all three chunks can be combined into one.
+    */
+   while (fl) {
+      if (offset + size == fl->offset) {
+	 fl->offset = offset;
+	 fl->size += size;
+	 fl2 = fl->next;
+	 while (fl2) {
+	    if (fl2->offset + fl2->size == fl->offset) {
+	       fl->offset = fl2->offset;
+	       fl->size += fl2->size;
+	       H5H_remove_free (heap, fl2);
+	       return 0;
+	    }
+	 }
+	 return 0;
+	 
+      } else if (fl->offset + fl->size == offset) {
+	 fl->size += size;
+	 fl2 = fl->next;
+	 while (fl2) {
+	    if (fl->offset + fl->size == fl2->offset) {
+	       fl->size += fl2->size;
+	       H5H_remove_free (heap, fl2);
+	       return 0;
+	    }
+	 }
+	 return 0;
+      }
+
+      fl = fl->next;
+   }
+
+
+   /*
+    * The amount which is being removed must be large enough to
+    * hold the free list data.  If not, the freed chunk is forever
+    * lost.
+    */
+   if (size < H5H_SIZEOF_FREE(f)) {
+      fprintf (stderr, "H5H_remove: lost %d bytes\n", size);
+      return 0;
+   }
+
+   /*
+    * Add an entry to the free list.
+    */
+   fl = H5MM_xmalloc (sizeof(H5H_free_t));
+   fl->offset = offset;
+   fl->size = size;
+   fl->prev = NULL;
+   fl->next = heap->freelist;
+   if (heap->freelist) heap->freelist->prev = fl;
+   heap->freelist = fl;
+
+   return 0;
+}
diff --git a/src/H5Hprivate.h b/src/H5Hprivate.h
new file mode 100644
index 0000000..b90d727
--- /dev/null
+++ b/src/H5Hprivate.h
@@ -0,0 +1,36 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Hprivate.h
+ * 			Jul 16 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Hprivate_H
+#define _H5Hprivate_H
+
+#include "H5Hproto.h"
+#include "H5Fprivate.h"
+
+/*
+ * Library prototypes...
+ */
+off_t H5H_new (hdf5_file_t *f, size_t size_hint);
+void *H5H_read (hdf5_file_t *f, off_t addr, off_t offset, size_t size,
+		void *buf);
+const void *H5H_peek (hdf5_file_t *f, off_t addr, off_t offset);
+off_t H5H_insert (hdf5_file_t *f, off_t addr, size_t size, const void *buf);
+herr_t H5H_write (hdf5_file_t *f, off_t addr, off_t offset, size_t size,
+		  const void *buf);
+herr_t H5H_remove (hdf5_file_t *f, off_t addr, off_t offset, size_t size);
+
+
+#endif
diff --git a/src/H5Hproto.h b/src/H5Hproto.h
new file mode 100644
index 0000000..fcf36f8
--- /dev/null
+++ b/src/H5Hproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Hproto.h
+ * 			Jul 16 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Hproto_H
+#define _H5Hproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5M.c b/src/H5M.c
new file mode 100644
index 0000000..6e8dc3a
--- /dev/null
+++ b/src/H5M.c
@@ -0,0 +1,257 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       hdf5meta.c
+   HDF5 "Meta-Object" routines
+
+   EXPORTED ROUTINES
+       H5Mcreate    -- Create an object
+       H5Mcopy      -- Copy an object
+       H5Mrelease   -- Release access to an object
+
+   LIBRARY-SCOPED ROUTINES
+
+   LOCAL ROUTINES
+       H5M_init_interface    -- initialize the interface
+   + */
+
+#include "hdf5.h"
+#include "H5private.h"  /* Generic functions */
+#include "H5Cproto.h"   /* Template interface */
+#include "H5Tproto.h"   /* Datatype interface */
+#include "H5Mprivate.h" /* Meta-object interface */
+#include "H5Cprivate.h"   /* Template interface */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*------------------_-- Local function prototypes ----------------------------*/
+static herr_t H5M_init_interface(void);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5M_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5M_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5M_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5CIinit_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5M_mask, ID_H5M_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    FUNC_LEAVE(H5M_mask, ID_H5M_init_interface, ret_value);
+}	/* H5M_init_interface */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5M_find_type
+ PURPOSE
+    Find the type of meta-object to issue a method call on
+ USAGE
+    intn H5M_find_type(type)
+        hobjtype_t type;        IN: Type of object to create
+ RETURNS
+     Returns the index of the type in the array of methods on success, or FAIL 
+        on failure.
+ DESCRIPTION
+        This function performs a search to find the index of the type of a 
+    meta-object in the array of function pointers.
+--------------------------------------------------------------------------*/
+static intn H5M_find_type(hobjtype_t type)
+{
+    CONSTR(FUNC, "H5M_find_type");      /* for HERROR */
+    intn i;         /* local counting variable */
+    intn ret_value = FAIL;
+
+    FUNC_ENTER(H5M_mask, ID_H5M_find_type, H5M_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /*
+     * Currently this uses a stright linear search, which can easily be changed
+     * to a binary search when it becomes too slow.
+     */
+    for(i=0; i<(sizeof(meta_func_arr)/sizeof(meta_func_t)); i++)
+        if(type==meta_func_arr[i].type)
+            HGOTO_DONE(i);
+
+done:
+    if(ret_value == FAIL)   
+      { /* Error condition cleanup */
+
+      } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5M_mask, ID_H5M_find_type, ret_value);
+} /* end H5M_find_type() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Mcreate
+ PURPOSE
+    Create a new HDF5 object.
+ USAGE
+    hatom_t H5Mcreate(owner_id, type, name)
+        hatom_t owner_id;       IN: Group/file which owns this object
+        hobjtype_t type;        IN: Type of object to create
+        const char *name;       IN: Name of the object
+ RETURNS
+    Returns ID (atom) on success, FAIL on failure
+ DESCRIPTION
+        This function re-directs the object's creation into the appropriate
+    interface, as defined by the function pointers in hdf5fptr.h
+--------------------------------------------------------------------------*/
+hatom_t H5Mcreate(hatom_t owner_id, hobjtype_t type, const char *name)
+{
+    CONSTR(FUNC, "H5Mcreate");      /* for HERROR */
+    intn i;         /* local counting variable */
+    hatom_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5M_mask, ID_H5Mcreate, H5M_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(type<=BADGROUP || type>=MAXGROUP)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    i=H5M_find_type(type);
+    if(meta_func_arr[i].create==NULL)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
+    ret_value=meta_func_arr[i].create(owner_id,type,name);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5M_mask, ID_H5Mcreate, ret_value);
+} /* end H5Mcreate() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Mcopy
+ PURPOSE
+    Copy an HDF5 object.
+ USAGE
+    hatom_t H5Mcopy(oid)
+        hatom_t oid;       IN: Object to copy
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function re-directs the object's copy into the appropriate
+    interface, as defined by the function pointers in hdf5fptr.h
+--------------------------------------------------------------------------*/
+hatom_t H5Mcopy(hatom_t oid)
+{
+    CONSTR(FUNC, "H5Mcopy");      /* for HERROR */
+    group_t group=H5Aatom_group(oid);   /* Atom group for incoming object */
+    intn i;         /* local counting variable */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5M_mask, ID_H5Mcopy, H5M_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(group<=BADGROUP || group>=MAXGROUP)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    i=H5M_find_type(group);
+    if(meta_func_arr[i].copy==NULL)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
+    ret_value=meta_func_arr[i].copy(oid);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5M_mask, ID_H5Mcopy, ret_value);
+} /* end H5Mcopy() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Mrelease
+ PURPOSE
+    Release access to an HDF5 object.
+ USAGE
+    herr_t H5Mrelease(oid)
+        hatom_t oid;       IN: Object to release access to
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function re-directs the object's release into the appropriate
+    interface, as defined by the function pointers in hdf5fptr.h
+--------------------------------------------------------------------------*/
+herr_t H5Mrelease(hatom_t oid)
+{
+    CONSTR(FUNC, "H5Mrelease");      /* for HERROR */
+    group_t group=H5Aatom_group(oid);   /* Atom group for incoming object */
+    intn i;         /* local counting variable */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5M_mask, ID_H5Mrelease, H5M_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(group<=BADGROUP || group>=MAXGROUP)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    i=H5M_find_type(group);
+    if(meta_func_arr[i].release==NULL)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, FAIL);
+    ret_value=meta_func_arr[i].release(oid);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5M_mask, ID_H5Mrelease, ret_value);
+} /* end H5Mrelease() */
+
diff --git a/src/H5MF.c b/src/H5MF.c
new file mode 100644
index 0000000..0bd1f4f
--- /dev/null
+++ b/src/H5MF.c
@@ -0,0 +1,88 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MF.c
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		File memory management functions.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+#include "hdf5.h"
+
+#include "H5Fprivate.h"
+#include "H5MFprivate.h"
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MF_alloc
+ *
+ * Purpose:	Allocate at least SIZE bytes of file memory and return
+ *		the address where that contiguous chunk of file memory
+ *		exists.
+ *
+ * Return:	Success:	File address of new chunk.
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 11 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+off_t
+H5MF_alloc (hdf5_file_t *f, size_t size)
+{
+   off_t	addr;
+   
+   assert (f);
+   assert (f->logical_len>0);
+   assert (size>0);
+
+   addr = f->logical_len;
+   f->logical_len += size;
+   return addr;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MF_free
+ *
+ * Purpose:	Frees part of a file, making that part of the file
+ *		available for reuse.
+ *
+ * Note:	This version of the function doesn't do anything.
+ *
+ * Return:	Success:	0
+ *
+ *		Failure:	-1
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 17 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5MF_free (hdf5_file_t *f, off_t addr, size_t size)
+{
+   if (addr<=0 || 0==size) return 0;
+
+   fprintf (stderr, "H5MF_free: lost %lu bytes of file storage\n",
+	    (unsigned long)size);
+   
+   return 0;
+}
+
diff --git a/src/H5MFprivate.h b/src/H5MFprivate.h
new file mode 100644
index 0000000..a040eda
--- /dev/null
+++ b/src/H5MFprivate.h
@@ -0,0 +1,28 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MFprivate.h
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Private header file for file memory management.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5MFprivate_H
+#define _H5MFprivate_H
+
+#include "H5MFproto.h"
+
+/*
+ * Library prototypes...
+ */
+off_t H5MF_alloc (hdf5_file_t *f, size_t size);
+herr_t H5MF_free (hdf5_file_t *f, off_t addr, size_t size);
+
+#endif
diff --git a/src/H5MFproto.h b/src/H5MFproto.h
new file mode 100644
index 0000000..3b54ecd
--- /dev/null
+++ b/src/H5MFproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MFproto.h
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Prototypes for file memory management.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5MFproto_H
+#define _H5MFproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5MM.c b/src/H5MM.c
new file mode 100644
index 0000000..725085f
--- /dev/null
+++ b/src/H5MM.c
@@ -0,0 +1,175 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MM.c
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Memory management functions.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <assert.h>
+#include "hdf5.h"
+
+#include "H5MMprivate.h"
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MM_xmalloc
+ *
+ * Purpose:	Just like malloc(3) except it aborts on an error.
+ *
+ * Return:	Success:	Ptr to new memory.
+ *
+ *		Failure:	abort()
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5MM_xmalloc (size_t size)
+{
+   void *mem = HDmalloc (size);
+   assert (mem);
+   return mem;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MM_xcalloc
+ *
+ * Purpose:	Just like calloc(3) except it aborts on an error.
+ *
+ * Return:	Success:	Ptr to memory.
+ *
+ *		Failure:	abort()
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5MM_xcalloc (size_t n, size_t size)
+{
+   void *mem = HDcalloc (n, size);
+   assert (mem);
+   return mem;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MM_xrealloc
+ *
+ * Purpose:	Just like the POSIX version of realloc(3) exept it aborts
+ *		on an error.  Specifically, the following calls are
+ *		equivalent
+ *
+ * 		H5MM_xrealloc (NULL, size) <==> H5MM_xmalloc (size)
+ *		H5MM_xrealloc (ptr, 0)     <==> H5MM_xfree (ptr)
+ *		H5MM_xrealloc (NULL, 0)	   <==> NULL
+ *
+ * Return:	Success:	Ptr to new memory or NULL if the memory
+ *				was freed.
+ *
+ *		Failure:	abort()
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5MM_xrealloc (void *mem, size_t size)
+{
+   if (!mem) {
+      if (0==size) return NULL;
+      mem = H5MM_xmalloc (size);
+      
+   } else if (0==size) {
+      mem = H5MM_xfree (mem);
+
+   } else {
+      mem = realloc (mem, size);
+      assert (mem);
+   }
+
+   return mem;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MM_strdup
+ *
+ * Purpose:	Duplicates a string.  If the string to be duplicated is the
+ *		null pointer, then return null.  If the string to be duplicated
+ *		is the empty string then return a new empty string.
+ *
+ * Return:	Success:	Ptr to a new string (or null if no string).
+ *
+ *		Failure:	abort()
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+char *
+H5MM_xstrdup (const char *s)
+{
+   char		*mem;
+
+   if (!s) return NULL;
+   mem = H5MM_xmalloc (strlen (s)+1);
+   strcpy (mem, s);
+   return mem;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	H5MM_xfree
+ *
+ * Purpose:	Just like free(3) except null pointers are allowed as
+ *		arguments, and the return value (always NULL) can be
+ *		assigned to the pointer whose memory was just freed:
+ *
+ * 			thing = H5MM_xfree (thing);
+ *
+ * Return:	Success:	NULL
+ *
+ *		Failure:	never fails
+ *
+ * Programmer:	Robb Matzke
+ *		robb@maya.nuance.com
+ *		Jul 10 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+void *
+H5MM_xfree (void *mem)
+{
+   if (mem) HDfree (mem);
+   return NULL;
+}
diff --git a/src/H5MMprivate.h b/src/H5MMprivate.h
new file mode 100644
index 0000000..68dd73b
--- /dev/null
+++ b/src/H5MMprivate.h
@@ -0,0 +1,32 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MMprivate.h
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Private header for memory management.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5MMprivate_H
+#define _H5MMprivate_h
+
+#include "H5MMproto.h"
+
+/*
+ * Library prototypes...
+ */
+void *H5MM_xmalloc (size_t size);
+void *H5MM_xcalloc (size_t n, size_t size);
+void *H5MM_xrealloc (void *mem, size_t size);
+char *H5MM_xstrdup (const char *s);
+void *H5MM_xfree (void *mem);
+
+
+#endif
diff --git a/src/H5MMproto.h b/src/H5MMproto.h
new file mode 100644
index 0000000..e1598f8
--- /dev/null
+++ b/src/H5MMproto.h
@@ -0,0 +1,29 @@
+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5MMproto.h
+ * 			Jul 10 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Function prototypes for memory management.
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5MMproto_H
+#define _H5MMproto_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/H5Mprivate.h b/src/H5Mprivate.h
new file mode 100644
index 0000000..a1fb6cc
--- /dev/null
+++ b/src/H5Mprivate.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains macros & information for meta-objects
+ */
+
+#ifndef H5MPRIVATE_H
+#define H5MPRIVATE_H
+
+#include "H5Mproto.h"   /* Include Public Definitions */
+
+/*
+ * A function table record for accessing interfaces which use the "meta"
+ *  interface to create/access/release objects.
+ */
+
+typedef struct meta_func_t
+  {
+    hobjtype_t type;            /* Object type this interface is for */
+    hatom_t (*create) (hatom_t , hobjtype_t, const char *);   /* Object creation function */
+    hatom_t (*access) (hatom_t );   /* Object access function */
+    hatom_t (*copy) (hatom_t );     /* Object copy function */
+    hatom_t (*find_name) (hatom_t , hobjtype_t, const char *); /* Find first object */
+    uint32  (*name_len) (hatom_t );     /* Get length of object name */
+    herr_t  (*get_name) (hatom_t , char *);     /* Get object name */
+    herr_t  (*set_name) (hatom_t , const char *);   /* Set object name */
+    hatom_t (*search) (hatom_t , hobjtype_t, const char *); /* Search for list of objects */
+    hatom_t (*index) (hatom_t , hobjtype_t, uint32);    /* Get the OID for the n'th object */
+    herr_t  (*flush) (hatom_t );    /* Flush the object to disk */
+    herr_t  (*delete) (hatom_t );   /* Delete an object from file */
+    hatom_t (*get_parent) (hatom_t );   /* Get the parent object of an object */
+    herr_t  (*release) (hatom_t );  /* End access to an object */
+  }
+meta_func_t;
+
+meta_func_t meta_func_arr[]={
+    {   /* Template object meta-functions (defined in H5C.c) */
+        H5_TEMPLATE,            /* File-Creation Template Type ID */
+        H5C_create,             /* File-Creation Template Create */
+        NULL,
+        H5C_copy,               /* File-Creation Template Copy */
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        H5C_release             /* File-Creation Template Release */
+    },
+    {   /* Datatype object meta-functions (defined in H5T.c) */
+        H5_DATATYPE,            /* Datatype Type ID */
+        H5T_create,             /* Datatype object functions */
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        H5T_release
+    }
+  };
+
+/* Private functions, not part of the publicly documented API */
+
+#endif /* H5MPRIVATE_H */
+
diff --git a/src/H5Mproto.h b/src/H5Mproto.h
new file mode 100644
index 0000000..3c06412
--- /dev/null
+++ b/src/H5Mproto.h
@@ -0,0 +1,37 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5M module
+ */
+
+#ifndef H5MPROTO_H
+#define H5MPROTO_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5M.c */
+hatom_t H5Mcreate(hatom_t owner_id, hobjtype_t type, const char *name);
+hatom_t H5Mcopy(hatom_t oid);
+herr_t H5Mrelease(hatom_t oid);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5MPROTO_H */
+
diff --git a/src/H5P.c b/src/H5P.c
new file mode 100644
index 0000000..ad24b07
--- /dev/null
+++ b/src/H5P.c
@@ -0,0 +1,216 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       H5P.c
+   HDF5 Data-space routines
+
+   EXPORTED ROUTINES
+       H5Pcreate    -- Create a data-space
+       H5Prelease   -- Release access to a data-space
+
+   LIBRARY-SCOPED ROUTINES
+
+   LOCAL ROUTINES
+       H5P_init_interface    -- initialize the interface
+   + */
+
+#include "hdf5.h"
+#include "H5private.h"  /* Generic Functions */
+#include "H5Pprivate.h" /* Data-space functions */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*--------------------------------------------------------------------------
+NAME
+   H5P_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5P_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5P_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5P_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5P_mask, ID_H5P_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    /* Initialize the atom group for the file IDs */
+    ret_value=H5Ainit_group(H5_DATASPACE,HDF5_DATASPACEID_HASHSIZE,H5P_RESERVED_ATOMS);
+
+    FUNC_LEAVE(H5P_mask, ID_H5P_init_interface, ret_value);
+}	/* H5P_init_interface */
+
+#ifdef NOT_YET
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tcreate
+ PURPOSE
+    Create a new HDF5 data-type object
+ USAGE
+    hatom_t H5Tcreate(owner_id, type, name)
+        hatom_t owner_id;       IN: Group/file which owns this object
+        hobjtype_t type;        IN: Type of object to create
+        const char *name;       IN: Name of the object
+ RETURNS
+    Returns ID (atom) on success, FAIL on failure
+ DESCRIPTION
+        This function actually creates the data-type object.
+--------------------------------------------------------------------------*/
+hatom_t H5T_create(hatom_t owner_id, hobjtype_t type, const char *name)
+{
+    CONSTR(FUNC, "H5T_create");     /* for HERROR */
+    h5_datatype_t *new_dt;            /* new data-type object to create */
+    hatom_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tcreate, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Allocate space for the new data-type */
+    if((new_dt=HDmalloc(sizeof(h5_datatype_t)))==NULL)
+        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+    
+    /* Initialize the datatype */
+    new_dt->dt.base=0;           /* No Default datatype */
+    new_dt->name=HDstrdup(name); /* Make a copy of the datatype's name */
+    new_dt->ci=NULL;             /* Set the complex information to NULL */
+
+    /* Register the new datatype and get an ID for it */
+    if((ret_value=H5Aregister_atom(H5_DATATYPE, (const VOIDP)new_dt))==FAIL)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tcreate, ret_value);
+} /* end H5T_create() */
+#endif /* NOT_YET */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Pnelem
+ PURPOSE
+    Return the number of elements in a dataspace
+ USAGE
+    uintn H5Pnelem(sid)
+        hatom_t sid;            IN: Dataspace object to query
+ RETURNS
+    The number of elements in a dataspace on success, UFAIL on failure
+ DESCRIPTION
+        This function determines the number of dataset elements in a 
+    dataspace.  For example, a simple 3-dimensional dataspace with dimensions
+    2, 3 and 4 would have 24 elements.
+    UFAIL is returned on an error, otherwise the number of elements is returned.
+--------------------------------------------------------------------------*/
+uintn H5Pnelem(hatom_t sid)
+{
+    CONSTR(FUNC, "H5Pnelem");    /* for HERROR */
+    uintn        ret_value = UFAIL;
+
+    FUNC_ENTER(H5P_mask, ID_H5Pnelem, H5P_init_interface, UFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+#ifdef FINISH_THIS
+#else /* FINISH_THIS */
+    if(sid==H5P_SCALAR)
+        ret_value=1;
+#endif /* FINISH_THIS */
+
+done:
+  if(ret_value == UFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5P_mask, ID_H5Pnelem, ret_value);
+} /* end H5Pnelem() */
+
+#ifdef NOT_YET
+/*--------------------------------------------------------------------------
+ NAME
+    H5Trelease
+ PURPOSE
+    Release access to an HDF5 datatype object.
+ USAGE
+    herr_t H5Trelease(oid)
+        hatom_t oid;       IN: Object to release access to
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function releases a datatype from active use by a user.
+--------------------------------------------------------------------------*/
+herr_t H5T_release(hatom_t oid)
+{
+    CONSTR(FUNC, "H5T_release");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5Trelease, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Chuck the object! :-) */
+    if((dt=H5Aremove_atom(oid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    if(dt->name!=NULL)
+        HDfree(dt->name);
+    if(dt->ci!=NULL)
+      {
+      } /* end if */
+    HDfree(dt);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Trelease, ret_value);
+} /* end H5T_release() */
+#endif /* NOT_YET */
+
diff --git a/src/H5Pprivate.h b/src/H5Pprivate.h
new file mode 100644
index 0000000..bad8702
--- /dev/null
+++ b/src/H5Pprivate.h
@@ -0,0 +1,30 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains private information about the H5P module
+ */
+
+#ifndef H5PPRIVATE_H
+#define H5PPRIVATE_H
+
+#include "H5Pproto.h"
+#define H5P_RESERVED_ATOMS  1
+
+/*------------------_-- Local function prototypes ----------------------------*/
+static herr_t H5P_init_interface(void);
+
+#endif /* H5PPRIVATE_H */
+
+
diff --git a/src/H5Pproto.h b/src/H5Pproto.h
new file mode 100644
index 0000000..218949a
--- /dev/null
+++ b/src/H5Pproto.h
@@ -0,0 +1,39 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5P module
+ */
+
+#ifndef H5PPROTO_H
+#define H5PPROTO_H
+
+/* Define atomic datatypes */
+#define H5P_SCALAR  MAKE_ATOM(H5_DATASPACE,0)
+
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5P.c */
+uintn H5Pnelem(hatom_t dim_id);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5PPROTO_H */
+
diff --git a/src/H5T.c b/src/H5T.c
new file mode 100644
index 0000000..f7bb155
--- /dev/null
+++ b/src/H5T.c
@@ -0,0 +1,662 @@
+/****************************************************************************
+* NCSA HDF                                                                 *
+* Software Development Group                                               *
+* National Center for Supercomputing Applications                          *
+* University of Illinois at Urbana-Champaign                               *
+* 605 E. Springfield, Champaign IL 61820                                   *
+*                                                                          *
+* For conditions of distribution and use, see the accompanying             *
+* hdf/COPYING file.                                                        *
+*                                                                          *
+****************************************************************************/
+
+#ifdef RCSID
+static char RcsId[] = "@(#)$Revision$";
+#endif
+
+/* $Id$ */
+
+/*LINTLIBRARY */
+/*+
+   FILE
+       H5T.c
+   HDF5 Data-type routines
+
+   EXPORTED ROUTINES
+       H5Tget_num_fields  -- Get the number of fields in a compound datatype
+       H5Tis_field_atomic -- Check if a field is atomic
+       H5Tis_atomic       -- Check if a datatype is atomic
+       H5Tset_type        -- Set the base type of a user-defined datatype
+       H5Tadd_field       -- Add a field to a compound datatype
+       H5Tsize            -- Determine the size of a datatype
+
+   LIBRARY-SCOPED ROUTINES
+       H5T_create         -- (Meta-Object) Create a datatype
+       H5T_release        -- (Meta-Object) Release access to a datatype
+
+   LOCAL ROUTINES
+       H5T_init_interface    -- initialize the interface
+   + */
+
+#include "hdf5.h"
+#include "H5private.h"  /* Generic Functions */
+#include "H5Tprivate.h" /* Data-type functions */
+
+/*--------------------- Locally scoped variables -----------------------------*/
+
+/* Whether we've installed the library termination function yet for this interface */
+static intn interface_initialize = FALSE;
+
+/*------------------_-- Local function prototypes ----------------------------*/
+static herr_t H5T_init_interface(void);
+
+/*--------------------------------------------------------------------------
+NAME
+   H5T_init_interface -- Initialize interface-specific information
+USAGE
+    herr_t H5T_init_interface()
+   
+RETURNS
+   SUCCEED/FAIL
+DESCRIPTION
+    Initializes any interface-specific data or routines.
+
+--------------------------------------------------------------------------*/
+static herr_t H5T_init_interface(void)
+{
+#ifdef LATER
+    CONSTR(FUNC, "H5T_init_interface");	/* For HERROR */
+#endif /* LATER */
+    herr_t ret_value = SUCCEED;
+
+    /* Don't use "FUNC_ENTER" macro, to avoid potential infinite recursion */
+    PABLO_TRACE_ON(H5T_mask, ID_H5T_init_interface);
+
+    /* Don't call this routine again... */
+    interface_initialize = TRUE;
+
+    /* Initialize the atom group for the file IDs */
+    ret_value=H5Ainit_group(H5_DATATYPE,HDF5_DATATYPEID_HASHSIZE,H5T_RESERVED_ATOMS);
+
+    FUNC_LEAVE(H5T_mask, ID_H5T_init_interface, ret_value);
+}	/* H5T_init_interface */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5T_create
+ PURPOSE
+    Create a new HDF5 data-type object
+ USAGE
+    hatom_t H5T_create(owner_id, type, name)
+        hatom_t owner_id;       IN: Group/file which owns this object
+        hobjtype_t type;        IN: Type of object to create
+        const char *name;       IN: Name of the object
+ RETURNS
+    Returns ID (atom) on success, FAIL on failure
+ DESCRIPTION
+        This function actually creates the data-type object.
+--------------------------------------------------------------------------*/
+hatom_t H5T_create(hatom_t owner_id, hobjtype_t type, const char *name)
+{
+    CONSTR(FUNC, "H5T_create");     /* for HERROR */
+    h5_datatype_t *new_dt;            /* new data-type object to create */
+    hatom_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5T_create, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Allocate space for the new data-type */
+    if((new_dt=HDmalloc(sizeof(h5_datatype_t)))==NULL)
+        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+    
+    /* Initialize the datatype */
+    new_dt->dt.base=0;           /* No Default datatype */
+    new_dt->name=HDstrdup(name); /* Make a copy of the datatype's name */
+    new_dt->ci=NULL;             /* Set the complex information to NULL */
+
+    /* Register the new datatype and get an ID for it */
+    if((ret_value=H5Aregister_atom(H5_DATATYPE, (const VOIDP)new_dt))==FAIL)
+        HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5T_create, ret_value);
+} /* end H5T_create() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tget_num_fields
+ PURPOSE
+    Return the number of fields in a compound datatype
+ USAGE
+    uint32 H5Tget_num_fields(tid)
+        hatom_t tid;            IN: Datatype object to query
+ RETURNS
+    The number of fields in a compound datatype on success, UFAIL on failure
+ DESCRIPTION
+        This function checks the number of fields in a compound user-defined
+    datatype.  UFAIL is returned on an error or if an atomic datatype is
+    queried, otherwise the number of fields is returned.
+--------------------------------------------------------------------------*/
+uint32 H5Tget_num_fields(hatom_t tid)
+{
+    CONSTR(FUNC, "H5Tget_num_fields");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    uint32        ret_value = UFAIL;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tget_num_fields, H5T_init_interface, UFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Go get the object */
+    if((dt=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Check the base type of the datatype */
+    if(H5T_COMPOUND!=dt->dt.base)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+    
+    /* Check if the compound information has been initialized */
+    if(NULL==dt->ci)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_UNINITIALIZED, FAIL);
+
+    /* Grab the number of fields */
+    ret_value=dt->ci->n;
+
+done:
+  if(ret_value == UFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tget_num_fields, ret_value);
+} /* end H5Tget_num_fields() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tis_field_atomic
+ PURPOSE
+    Check if a field in a compound datatype is atomic
+ USAGE
+    hbool_t H5Tis_field_atomic(tid, fidx)
+        hatom_t tid;            IN: Datatype object to query
+        uintn fidx;             IN: Index of the field to query
+ RETURNS
+    BFAIL/BTRUE/BFALSE
+ DESCRIPTION
+        This function checks the basic type of field in a user-defined datatype.
+    BTRUE is returned if the datatype is atomic (i.e. not compound), BFALSE is
+    returned if the datatype is compound, BFAIL on error.
+--------------------------------------------------------------------------*/
+hbool_t H5Tis_field_atomic(hatom_t tid, uintn fidx)
+{
+    CONSTR(FUNC, "H5Tis_field_atomic");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    hbool_t        ret_value = BTRUE;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tis_field_atomic, H5T_init_interface, BFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Go get the object */
+    if((dt=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Check the base type of the datatype */
+    if(H5T_COMPOUND!=dt->dt.base)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+    
+    /* Check if the compound information has been initialized */
+    if(NULL==dt->ci)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_UNINITIALIZED, FAIL);
+
+    /* Check if the field is valid*/
+    if(fidx>=dt->ci->n)
+        HGOTO_ERROR(H5E_INTERNAL, H5E_BADRANGE, FAIL);
+
+    /* Check the base type of the field */
+    if(H5T_COMPOUND==dt->ci->flist[fidx].dt.base || H5P_SCALAR!=dt->ci->flist[fidx].dim_id)
+        ret_value=BFALSE;
+
+done:
+  if(ret_value == BFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tis_field_atomic, ret_value);
+} /* end H5Tis_field_atomic() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tis_atomic
+ PURPOSE
+    Check if a datatype is atomic
+ USAGE
+    hbool_t H5Tis_atomic(tid)
+        hatom_t tid;            IN: Datatype object to query
+ RETURNS
+    BFAIL/BTRUE/BFALSE
+ DESCRIPTION
+        This function checks the basic type of a user-defined datatype.  BTRUE
+    is returned if the datatype is atomic (i.e. not compound), BFALSE is
+    returned if the datatype is compound, BFAIL on error.
+--------------------------------------------------------------------------*/
+hbool_t H5Tis_atomic(hatom_t tid)
+{
+    CONSTR(FUNC, "H5Tis_atomic");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    hbool_t        ret_value = BTRUE;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tis_atomic, H5T_init_interface, BFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Go get the object */
+    if((dt=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Check the base type of the datatype */
+    if(H5T_COMPOUND==dt->dt.base)
+        ret_value=BFALSE;
+
+done:
+  if(ret_value == BFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tis_atomic, ret_value);
+} /* end H5Tis_atomic() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tset_type
+ PURPOSE
+    Set the base type of a user-defined datatype 
+ USAGE
+    herr_t H5Tset_type(tid, base, len, arch)
+        hatom_t tid;            IN: Datatype object to modify
+        hatom_t base;           IN: Base type to set the datatype to
+        uint8 len;              IN: Length of the object in bytes
+        uint8 arch;             IN: Architecture format to store type with
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function sets the basic type of a user-defined datatype.  Each
+    datatype is either an atomic type (i.e. has no further divisions of the
+    type) or is a compound type (like a C structure).  If the datatype is set
+    to a compound type, the 'len' argument is not used.
+--------------------------------------------------------------------------*/
+herr_t H5Tset_type(hatom_t tid,hatom_t base,uint8 len,uint8 arch)
+{
+    CONSTR(FUNC, "H5Tset_type");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tset_type, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+    if(base<H5T_CHAR || base>H5T_COMPOUND)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL);
+
+    /* Go get the object */
+    if((dt=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    if(dt->dt.base!=0)
+        HGOTO_ERROR(H5E_FUNC, H5E_ALREADYINIT, FAIL);
+    
+    /* Set the basic datatype information */
+    dt->dt.base=base;
+    dt->dt.len=len;
+    dt->dt.arch=arch;
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tset_type, ret_value);
+} /* end H5Tset_type() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tadd_field
+ PURPOSE
+    Add a field to a compound datatype
+ USAGE
+    herr_t H5Tadd_field(tid, name, base, len, arch, space)
+        hatom_t tid;            IN: Datatype object to query
+        const char *fidx;       IN: Field name
+        hatom_t base;           IN: Field's base type, either an atom ID for
+                                    an existing compound type, or an atomic
+                                    base type
+        uint8 len;              IN: Length of an atomic base type
+        uint8 arch;             IN: Architecture format of an atomic base type
+        hatom_t space;          IN: The dimensionality of the field to add
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function adds a field to a user-defined compound datatype.  The
+    field can either be a base/len/arch triplet or an existing compound type
+    (passed in the base argument).  The space parameter is either H5P_SCALAR
+    (to indicate a scalar field) or the atom of a datatype for more complex
+    dimensionality fields.
+--------------------------------------------------------------------------*/
+herr_t H5Tadd_field(hatom_t tid, const char *name, hatom_t base, uint8 len, uint8 arch, hatom_t space)
+{
+    CONSTR(FUNC, "H5Tadd_field");    /* for HERROR */
+    h5_field_info_t *new_field; /* pointer to new field to add */
+    h5_datatype_t *dt;          /* data-type object to manipulate */
+    herr_t ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tadd_field, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Go get the object */
+    if((dt=H5Aatom_object(tid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+    /* Check the base type of the datatype */
+    if(H5T_COMPOUND!=dt->dt.base)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+    
+    /* Check if the compound information has been initialized */
+    if(NULL==dt->ci)
+      {
+        if(NULL==(dt->ci=HDmalloc(sizeof(h5_compound_info_t))))
+            HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+        dt->ci->n=0;            /* Set the number of fields to 0 */
+        dt->ci->mem_size=0;     /* Set the size of the structure */
+        dt->ci->disk_size=0;    /* Set the size of the structure */
+        dt->ci->flist=NULL;     /* No field information yet */
+      } /* end if */
+
+    if(NULL==(new_field=HDrealloc(dt->ci->flist,(dt->ci->n+1)*sizeof(h5_field_info_t))))
+        HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL);
+    dt->ci->n++;    /* increment the number of fields */
+    dt->ci->flist=new_field;    /* save the pointer to the increased array of fields */
+    new_field=&dt->ci->flist[dt->ci->n-1];   /* get a "convenience" pointer to the new field */
+
+    new_field->name=HDstrdup(name); /* copy the name */
+    new_field->name_off=0;          /* name isn't stored yet */
+    new_field->struct_off=dt->ci->disk_size;    /* Set the offset of the field on disk */
+    new_field->dim_id=H5Mcopy(space);    /* Make a copy of the dimension space for the field */
+    if((H5Ais_reserved(base)==BTRUE) && base!=H5T_COMPOUND) /* Check if this is a "simple" datatype */
+      {
+        new_field->dt.base=base;        /* Make a copy of the datatype for the field */
+        new_field->dt.len=len;
+        new_field->dt.arch=arch;
+      } /* end if */
+    else
+      {
+        new_field->dt.base=H5Mcopy(base);    /* Make a copy of the datatype for the field */
+        new_field->dt.len=H5Tsize(base,len,arch,BTRUE);
+        new_field->dt.arch=arch;
+      } /* end else */
+
+done:
+  if(ret_value == FAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tadd_field, ret_value);
+} /* end H5Tadd_field() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tsize
+ PURPOSE
+    Determine the size of a datatype
+ USAGE
+    uintn H5Tsize(tid, mem_flag)
+        hatom_t tid;            IN: Datatype object to query
+        hbool_t mem_flag;       IN: Whether the memory or disk size is desired
+ RETURNS
+    The size of the datatype on success or UFAIL on failure.
+ DESCRIPTION
+        Ths function returns the size of the datatype in bytes as it is stored
+    on disk or in memory, depending on the mem_flag.  Setting the mem_flag to
+    BTRUE returns the size in memory, BFALSE returns the size on disk.
+--------------------------------------------------------------------------*/
+uintn H5Tsize(hatom_t tid, uint8 len, uint8 arch, hbool_t mem_flag)
+{
+    CONSTR(FUNC, "H5Tsize");    /* for HERROR */
+    uintn ret_value = UFAIL;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tsize, H5T_init_interface, UFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    if((H5Ais_reserved(tid)==BTRUE) && tid!=H5T_COMPOUND) /* Check if this is a "simple" datatype */
+      {
+        switch(tid)
+          {
+            case H5T_CHAR:
+            case H5T_INT:
+            case H5T_FLOAT:     /* All three of thes types use the length as the number of bytes */
+                ret_value=len;
+                break;
+
+            case H5T_DATE:
+                ret_value=8;    /* Number of characters for ISO 8601 format */
+                break;
+
+            case H5T_TIME:
+                ret_value=6;    /* Number of characters for ISO 8601 format */
+                break;
+
+            case H5T_SPTR:
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL);
+                break;
+
+            case H5T_PPTR:
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL);
+                break;
+
+            default:
+                HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, UFAIL);
+          } /* end switch */
+      } /* end if */
+    else
+      {
+        if(tid==H5T_COMPOUND)
+          {
+            intn i;             /* local counting variable */
+            h5_datatype_t *dt;  /* datatype pointer */
+
+            /* Go get the object */
+            if((dt=H5Aatom_object(tid))==NULL)
+                HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+            /* Check the base type of the datatype */
+            if(H5T_COMPOUND!=dt->dt.base)
+                HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+            
+            /* Check if the compound information has been initialized */
+            if(NULL==dt->ci)
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNINITIALIZED, FAIL);
+
+            /* Grab the number of fields */
+            for(i=0; i<=dt->ci->n; i++)
+                ret_value+=H5Tsize(dt->ci->flist[i].dt.base, dt->ci->flist[i].dt.len,
+                        dt->ci->flist[i].dt.arch,mem_flag)*H5Pnelem(dt->ci->flist[i].dim_id);
+          } /* end if */
+      } /* end else */
+
+done:
+  if(ret_value == UFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tsize, ret_value);
+} /* end H5Tsize() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5Tget_fields
+ PURPOSE
+    Determine the size of a datatype
+ USAGE
+    herr_t H5Tget_fields(tid, field_list)
+        hatom_t tid;            IN: Datatype object to query
+        hoid_t *field_list;     IN: Array to store list of fields
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        Ths function returns the size of the datatype in bytes as it is stored
+    on disk or in memory, depending on the mem_flag.  Setting the mem_flag to
+    BTRUE returns the size in memory, BFALSE returns the size on disk.
+--------------------------------------------------------------------------*/
+herr_t H5Tget_fields(hatom_t tid, hoid_t *field_list)
+{
+    CONSTR(FUNC, "H5Tsize");    /* for HERROR */
+    uintn ret_value = UFAIL;
+
+    FUNC_ENTER(H5T_mask, ID_H5Tsize, H5T_init_interface, UFAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    if((H5Ais_reserved(tid)==BTRUE) && tid!=H5T_COMPOUND) /* Check if this is a "simple" datatype */
+      {
+        switch(tid)
+          {
+            case H5T_CHAR:
+            case H5T_INT:
+            case H5T_FLOAT:     /* All three of thes types use the length as the number of bytes */
+                ret_value=len;
+                break;
+
+            case H5T_DATE:
+                ret_value=8;    /* Number of characters for ISO 8601 format */
+                break;
+
+            case H5T_TIME:
+                ret_value=6;    /* Number of characters for ISO 8601 format */
+                break;
+
+            case H5T_SPTR:
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL);
+                break;
+
+            case H5T_PPTR:
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL);
+                break;
+
+            default:
+                HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, UFAIL);
+          } /* end switch */
+      } /* end if */
+    else
+      {
+        if(tid==H5T_COMPOUND)
+          {
+            intn i;             /* local counting variable */
+            h5_datatype_t *dt;  /* datatype pointer */
+
+            /* Go get the object */
+            if((dt=H5Aatom_object(tid))==NULL)
+                HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+
+            /* Check the base type of the datatype */
+            if(H5T_COMPOUND!=dt->dt.base)
+                HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL);
+            
+            /* Check if the compound information has been initialized */
+            if(NULL==dt->ci)
+                HGOTO_ERROR(H5E_INTERNAL, H5E_UNINITIALIZED, FAIL);
+
+            /* Grab the number of fields */
+            for(i=0; i<=dt->ci->n; i++)
+                ret_value+=H5Tsize(dt->ci->flist[i].dt.base, dt->ci->flist[i].dt.len,
+                        dt->ci->flist[i].dt.arch,mem_flag)*H5Pnelem(dt->ci->flist[i].dim_id);
+          } /* end if */
+      } /* end else */
+
+done:
+  if(ret_value == UFAIL)
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5Tsize, ret_value);
+} /* end H5Tsize() */
+
+/*--------------------------------------------------------------------------
+ NAME
+    H5T_release
+ PURPOSE
+    Release access to an HDF5 datatype object.
+ USAGE
+    herr_t H5T_release(oid)
+        hatom_t oid;       IN: Object to release access to
+ RETURNS
+    SUCCEED/FAIL
+ DESCRIPTION
+        This function releases a datatype from active use by a user.
+--------------------------------------------------------------------------*/
+herr_t H5T_release(hatom_t oid)
+{
+    CONSTR(FUNC, "H5T_release");    /* for HERROR */
+    h5_datatype_t *dt;         /* new data-type object to create */
+    herr_t        ret_value = SUCCEED;
+
+    FUNC_ENTER(H5T_mask, ID_H5T_release, H5T_init_interface, FAIL);
+
+    /* Clear errors and check args and all the boring stuff. */
+    H5ECLEAR;
+
+    /* Chuck the object! :-) */
+    if((dt=H5Aremove_atom(oid))==NULL)
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL);
+    if(dt->name!=NULL)
+        HDfree(dt->name);
+    if(dt->ci!=NULL)
+      {
+      } /* end if */
+    HDfree(dt);
+
+done:
+  if(ret_value == FAIL)   
+    { /* Error condition cleanup */
+
+    } /* end if */
+
+    /* Normal function cleanup */
+
+    FUNC_LEAVE(H5T_mask, ID_H5T_release, ret_value);
+} /* end H5T_release() */
+
diff --git a/src/H5Tprivate.h b/src/H5Tprivate.h
new file mode 100644
index 0000000..31b2e74
--- /dev/null
+++ b/src/H5Tprivate.h
@@ -0,0 +1,50 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains private information about the H5T module
+ */
+
+#ifndef H5TPRIVATE_H
+#define H5TPRIVATE_H
+
+#include "H5Tproto.h"
+#define H5T_RESERVED_ATOMS  8
+
+/* Structure for storing information about a field in a compound datatype */
+typedef struct {
+    char *name;         /* Name of the field */
+    uintn name_off;     /* Offset of name in global small-data heap */
+    uintn struct_off;   /* Offset of field within structure */
+    h5_atomic_type_t dt;  /* Datatype of the field */
+    hatom_t dim_id;     /* dimensionality ID of the field */
+  } h5_field_info_t;
+
+/* Structure for storing information about a compound datatype */
+typedef struct {
+    uintn n;            /* Number of fields */
+    uintn mem_size;     /* Size of the compound structure in memory */
+    uintn disk_size;    /* Size of the compound structure on disk */
+    h5_field_info_t *flist;   /* List of fields in the compound object */
+  } h5_compound_info_t;
+
+/* Structure for storing information any datatype */
+typedef struct {
+    h5_atomic_type_t  dt;     /* Atomic type of this object */
+    char *name;               /* Name of datatype */
+    h5_compound_info_t *ci;   /* Information for compound datatypes */
+  } h5_datatype_t;
+
+#endif /* H5TPRIVATE_H */
+
diff --git a/src/H5Tproto.h b/src/H5Tproto.h
new file mode 100644
index 0000000..5e32b0f
--- /dev/null
+++ b/src/H5Tproto.h
@@ -0,0 +1,57 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5T module
+ */
+
+#ifndef H5TPROTO_H
+#define H5TPROTO_H
+
+/* Define atomic datatypes */
+#define H5T_CHAR    MAKE_ATOM(H5_DATATYPE,0)
+#define H5T_INT     MAKE_ATOM(H5_DATATYPE,1)
+#define H5T_FLOAT   MAKE_ATOM(H5_DATATYPE,2)
+#define H5T_DATE    MAKE_ATOM(H5_DATATYPE,3)
+#define H5T_TIME    MAKE_ATOM(H5_DATATYPE,4)
+#define H5T_SPTR    MAKE_ATOM(H5_DATATYPE,5)
+#define H5T_PPTR    MAKE_ATOM(H5_DATATYPE,6)
+#define H5T_COMPOUND MAKE_ATOM(H5_DATATYPE,7)
+
+typedef struct {
+    hatom_t base;           /* Basic datatype */
+    uint8 len;              /* Length of base-type, in bytes */
+    uint8 arch;             /* Architecture of the base-type */
+ } h5_atomic_type_t;
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5T.c */
+hatom_t H5T_create(hatom_t owner_id, hobjtype_t type, const char *name);
+uint32 H5Tget_num_fields(hatom_t tid);
+hbool_t H5Tis_field_atomic(hatom_t tid,uintn fidx);
+hbool_t H5Tis_atomic(hatom_t tid);
+herr_t H5Tset_type(hatom_t tid,hatom_t base,uint8 len,uint8 arch);
+uintn H5Tsize(hatom_t tid, uint8 len, uint8 arch, hbool_t mem_flag);
+herr_t H5T_release(hatom_t oid);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5TPROTO_H */
+
diff --git a/src/H5private.h b/src/H5private.h
new file mode 100644
index 0000000..62e7e6c
--- /dev/null
+++ b/src/H5private.h
@@ -0,0 +1,30 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains macros & private information for general HDF5 functions
+ */
+
+#ifndef H5PRIVATE_H
+#define H5PRIVATE_H
+
+#include "H5proto.h"   /* Include Public Definitions */
+
+/* Private functions, not part of the publicly documented API */
+herr_t H5_init_library(void);
+void H5_term_library(void);
+herr_t H5_init_thread(void);
+
+#endif /* H5PRIVATE_H */
+
diff --git a/src/H5proto.h b/src/H5proto.h
new file mode 100644
index 0000000..f425c76
--- /dev/null
+++ b/src/H5proto.h
@@ -0,0 +1,35 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains function prototypes for each exported function in the H5 module
+ */
+
+#ifndef H5PROTO_H
+#define H5PROTO_H
+
+#if defined c_plusplus || defined __cplusplus
+extern      "C"
+{
+#endif                          /* c_plusplus || __cplusplus */
+
+/* Functions in H5.c */
+herr_t H5dont_atexit(void);
+herr_t H5version(uintn *majnum, uintn *minnum, uintn *relnum, uintn *patnum);
+
+#if defined c_plusplus || defined __cplusplus
+}
+#endif                          /* c_plusplus || __cplusplus */
+
+#endif /* H5PROTO_H */
diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 0000000..0a710ee
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,92 @@
+### Name of target
+TARGET = libhdf5.a
+
+#
+# PART 2: various choices
+#
+
+### -DDEBUG		Debugging options on
+DEFS = 
+
+#
+# PART 3: hardware dependend
+#
+
+### CC entry:      name and arguments for the compiler (also for linking)
+### MACHINE entry: defines used for compiling (not for linking)
+### LIBS:          defines used for linking
+MACHINE = 
+CC=gcc -O
+LIBS = 
+
+################################################
+##   no changes required below this line      ##
+################################################
+
+CFLAGS = -c $(MACHINE) $(DEFS)
+
+INCL = hdf5.h
+
+OBJ =	H5.o H5E.o H5A.o H5F.o H5C.o H5M.o H5AC.o H5B.o H5MM.o H5MF.o H5T.o \
+    H5Gnode.o H5H.o H5G.o H5P.o
+
+$(TARGET): $(OBJ) 
+	$(AR) $(ARFLAGS) $(TARGET) $(OBJ)
+	$(RANLIB) $(TARGET)
+
+all test: $(TARGET)
+
+debug: $(OBJ) 
+	$(AR) $(ARFLAGS) $(TARGET) $(OBJ)
+	$(RANLIB) $(TARGET)
+
+clean:
+	-rm -f *.o core $(TARGET) 
+	-rm -f *.bak
+
+###########################################################################
+
+H5.o:	H5.c  $(INCL) H5private.h H5proto.h
+	$(CC) $(CFLAGS) H5.c
+
+H5E.o:	H5E.c  $(INCL) H5Eprivate.h H5Eproto.h
+	$(CC) $(CFLAGS) H5E.c
+
+H5F.o:	H5F.c  $(INCL) H5Fprivate.h H5Fproto.h
+	$(CC) $(CFLAGS) H5F.c
+
+H5C.o:	H5C.c  $(INCL) H5Cprivate.h H5Cproto.h
+	$(CC) $(CFLAGS) H5C.c
+
+H5M.o:	H5M.c  $(INCL) H5Mprivate.h H5Mproto.h
+	$(CC) $(CFLAGS) H5M.c
+
+H5A.o:	H5A.c  $(INCL) H5Aprivate.h H5Aproto.h
+	$(CC) $(CFLAGS) H5A.c
+
+H5AC.o:	H5AC.c  $(INCL) H5ACprivate.h H5ACproto.h
+	$(CC) $(CFLAGS) H5AC.c
+
+H5B.o:	H5B.c  $(INCL) H5Bprivate.h H5Bproto.h
+	$(CC) $(CFLAGS) H5B.c
+
+H5MM.o:	H5MM.c  $(INCL) H5MMprivate.h H5MMproto.h
+	$(CC) $(CFLAGS) H5MM.c
+
+H5MF.o:	H5MF.c  $(INCL) H5MFprivate.h H5MFproto.h
+	$(CC) $(CFLAGS) H5MF.c
+
+H5T.o:	H5T.c  $(INCL) H5Tprivate.h H5Tproto.h
+	$(CC) $(CFLAGS) H5T.c
+
+H5Gnode.o: H5Gnode.c $(INCL) H5Gprivate.h H5Gproto.h
+	$(CC) $(CFLAGS) H5Gnode.c
+
+H5H.o: H5H.c $(INCL) H5Hprivate.h H5Hproto.h
+	$(CC) $(CFLAGS) H5H.c
+
+H5G.o: H5G.c $(INCL) H5Gprivate.h H5Gproto.h
+	$(CC) $(CFLAGS) H5G.c
+
+H5P.o: H5P.c $(INCL) H5Pprivate.h H5Pproto.h
+	$(CC) $(CFLAGS) H5P.c
diff --git a/src/h5oplat.h b/src/h5oplat.h
new file mode 100644
index 0000000..eb8627f
--- /dev/null
+++ b/src/h5oplat.h
@@ -0,0 +1,555 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+#ifndef H5OPLAT_H
+#define H5OPLAT_H
+
+/*
+ *  This file contains machine definitions for older architectures which once
+ *  were working, but haven't been tested in a long-time.  If you wish to use
+ *  and test an architecture from this file, move the entire machine's
+ *  definition from this file into the hdf5plat.h file and make certain to
+ *  delete the entry in this file.  -QAK
+ */
+
+/*-------------------------------------------------------------------------
+ * Define options for each platform
+ *-------------------------------------------------------------------------*/
+
+#if (defined(SUN) || defined(sun) || defined(__sun__) || defined(__SUNPRO_C)) & !defined(__i386)
+#ifdef __STDC__
+#define ANSISUN
+#else /* __STDC__ */
+#define KNRSUN
+#endif /* __STDC__ */
+#endif /* SUN || sun */
+
+/*
+ * CPU: Sparc (possibly Motorola 68K?)
+ * OS: Solaris 1.x (?), SunOS 4.x
+ */
+#if defined(KNRSUN)
+
+#if !defined(SUN)
+#define SUN
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#   define BSD
+#define DUMBCC 	/* because it is.  for later use in macros */
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <unistd.h>
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_SUN
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef char              *VOIDP;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+typedef float             float32;
+typedef double            float64;
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#ifdef __GNUC__
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+#endif
+
+#endif /* SUN */
+
+/*
+ * CPU: Vax & Alpha (yeah, right!  this definition is probably not really that portable! -QAK )
+ * OS: VMS, OpenVMS
+ */
+#if defined(VMS) || defined(vms)
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT              DFMT_VAX
+
+/* Define portable variable types */
+typedef void               VOID;
+typedef void              *VOIDP;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef char               char8;
+typedef unsigned char      uchar8;
+typedef char               int8;
+typedef unsigned char      uint8;
+typedef short int          int16;
+typedef unsigned short int uint16;
+#ifdef __alpha
+typedef int                int32;
+typedef unsigned int       uint32;
+#else
+typedef long int           int32;
+typedef unsigned long int  uint32;
+#endif
+typedef int                intn;
+typedef unsigned int       uintn;
+typedef float              float32;
+typedef double             float64;
+typedef int                intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define DF_CAPFNAMES            /* fortran names are in all caps */
+#define _fcdtocp(desc)  ((char *) *((char **) &desc[4])) /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#define FILELIB POSIXBUFIO
+
+/* 
+  Redef a couple of C routine names to avoid conflicts
+  since the VMS link command is case-insensitive
+*/
+#include "dfivms.h"
+
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* VMS */
+
+/*
+ * CPU: HP PA-RISC
+ * OS: ConvexOS
+ */
+#if defined(CONVEX) || defined(CONVEXNATIVE) || defined(__convexc__)
+
+#ifndef CONVEX
+#define CONVEX
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Set machine byte-format */
+#ifdef CONVEXNATIVE 
+/* For Convex machines with native format floats */
+#define DF_MT             DFMT_CONVEXNATIVE
+#else
+#define DF_MT             DFMT_CONVEX
+#endif
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define RIGHT_SHIFT_IS_UNSIGNED
+#define INCLUDES_ARE_ANSI
+#define HAVE_STDC
+
+#endif /* CONVEX */
+
+
+/*
+ * CPU: MIPS
+ * OS: Ultrix
+ */
+#if defined(MIPSEL) || ((defined(mips) || defined(__mips)) && (defined(ultrix) || defined(__ultrix)))
+
+#ifndef MIPSEL
+#define MIPSEL
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+#ifndef __GNUC__
+#define DUMBCC 	/* because it is.  for later use in macros -QAK */
+#endif /* __GNUC__ */
+
+/* Extra include files required for this platform */
+#include <sys/types.h>
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT   DFMT_MIPSEL
+
+/* Define portable variable types */
+typedef void            VOID;
+typedef void            *VOIDP;
+typedef char            char8;
+typedef unsigned char   uchar8;
+typedef char            int8;
+typedef unsigned char   uint8;
+typedef short           int16;
+typedef unsigned short  uint16;
+typedef int             int32;
+typedef unsigned int    uint32;
+typedef int             intn;
+typedef unsigned int    uintn;
+typedef float           float32;
+typedef double          float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int             intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* MIPSEL */
+
+/*
+ * CPU: Motorola 68K
+ * OS: NeXTSTEP
+ */
+#if defined(NEXT) || defined(NeXT)
+
+#ifndef NEXT
+#define NEXT
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#define isascii(c)  (isprint(c) || iscntrl(c))
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_NEXT
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+
+#endif /* NEXT */
+
+/*
+ * CPU: Motorola 88K (obscure CISC chip)
+ * OS: ?
+ */
+#if defined(MOTOROLA) || defined(m88k)
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <unistd.h>
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+#ifndef O_RDONLY
+#include <fcntl.h>              /* for unbuffered i/o stuff */
+#endif /*O_RDONLY*/
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_MOTOROLA
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#define FILELIB POSIXBUFIO
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* MOTOROLA */
+
+
+/*
+ * CPU: ? (Fujitsu VP series)
+ * OS: ? (UNIX)
+ */
+#if defined VP | defined __uxpm__
+
+#ifndef VP
+#define VP
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <memory.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT              DFMT_VP
+
+/* Define portable variable types */
+typedef void                VOID;
+typedef void               *VOIDP;
+typedef char               char8;
+typedef unsigned char      uchar8;
+typedef char               int8;
+typedef unsigned char      uint8;
+typedef short int          int16;
+typedef unsigned short int uint16;
+typedef long int           int32;
+typedef unsigned long int  uint32;
+typedef int                intn;
+typedef unsigned int       uintn;
+typedef float              float32;
+typedef double             float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#define FILELIB POSIXBUFIO
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* VP */
+
+/*
+ * CPU: Intel I860 (in Paragon system)
+ * OS: ? (UNIX)
+ */
+#if defined I860 | defined i860
+
+#ifndef I860
+#define I860
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <sys/types.h>
+#include <sys/file.h>           /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+#include <unistd.h>             /* mis-using def. for SEEK_SET, but oh well */
+
+/* Set machine byte-format */
+#define DF_MT   DFMT_I860
+
+/* Define portable variable types */
+typedef void            VOID;
+typedef void            *VOIDP;
+typedef char            char8;
+typedef unsigned char   uchar8;
+typedef char            int8;
+typedef unsigned char   uint8;
+typedef short           int16;
+typedef unsigned short  uint16;
+typedef int             int32;
+typedef unsigned int    uint32;
+typedef int             intn;
+typedef unsigned int    uintn;
+typedef float           float32;
+typedef double          float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int             intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#define FILELIB POSIXBUFIO
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* I860 */
+
+#endif /* H5OPLAT_H */
+
diff --git a/src/hdf5.h b/src/hdf5.h
new file mode 100644
index 0000000..6f3c9bc
--- /dev/null
+++ b/src/hdf5.h
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This is the main HDF5 include file.  Put further information in a particular
+ * header file and include that here, don't fill this file with lots of gunk...
+ */
+
+#ifndef HDF5_H
+#define HDF5_H
+
+/* Standard header files needed all the time */
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+
+/* PABLO support files */
+#ifdef HAVE_PABLO
+#define IOTRACE
+#include "IOTrace.h"
+#include "ProcIDs.h"
+#endif  /* HAVE_PABLO */
+
+/* Determine the system and set up basic info. */
+#include "hdf5plat.h"   /* Platform/OS/CPU detection header file (should be first header included) */
+
+/* Generic Data-Structure/Algorithm include files */
+#include "H5Aproto.h"   /* Atom management routines */
+
+/* Major HDF5 Include files */
+#include "hdf5meta.h"   /* File Meta-data conversion macros, etc. */
+#include "hdf5fort.h"   /* Fortran macros, etc. */
+#include "hdf5port.h"   /* Portability macros for easier development */
+#include "hdf5gen.h"    /* General global macros */
+#include "hdf5type.h"   /* General global typedefs (uses basic types defined in hdf5plat.h) */
+#include "hdf5lims.h"   /* Various global limits & version numbers on things */
+#include "H5Fproto.h"   /* File access information and macros */
+#include "hdf5pabl.h"   /* Pablo porting macros */
+#include "H5Eproto.h"   /* Error reporting information */
+#include "H5Cproto.h"   /* Template information */
+#include "H5Mproto.h"   /* Meta-Object information */
+#include "H5Tproto.h"   /* Datatype information */
+#include "H5Pproto.h"   /* Dataspace information */
+#include "H5proto.h"    /* Generic Interface information */
+#include "hdf5glob.h"   /* Global & thread-specific variables */
+
+#endif /* HDF5_H */
+
diff --git a/src/hdf5fort.h b/src/hdf5fort.h
new file mode 100644
index 0000000..21e9ffc
--- /dev/null
+++ b/src/hdf5fort.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains Fortran compatibility/interface macros, etc.
+ */
+
+#ifndef HDF5FORT_H
+#define HDF5FORT_H
+
+/*----------------------------------------------------------------
+** MACRO FCALLKEYW for any special fortran-C stub keyword
+**
+** MacIntosh MPW LS-fortran needs pascal since it can interface
+**  best with pascal functions.
+** Microsoft C and Fortran need __fortran for Fortran callable C
+**  routines.
+**
+** MACRO FRETVAL for any return value from a fortran-C stub function
+**  Replaces the older FCALLKEYW macro.
+**---------------------------------------------------------------*/
+#ifdef FRETVAL
+#undef FRETVAL
+#endif
+
+#if defined(MAC)                /* with LS FORTRAN */
+#ifndef ABSOFT
+#   define FCALLKEYW    pascal
+#   define FRETVAL(x)   pascal x
+#endif /* ABSOFT */
+#endif
+
+#ifndef FRETVAL /* !MAC */
+#   define FCALLKEYW    /*NONE*/
+#   define FRETVAL(x)   x
+#endif
+
+
+/*----------------------------------------------------------------
+** MACRO FNAME for any fortran callable routine name.
+**
+**  This macro prepends, appends, or does not modify a name
+**  passed as a macro parameter to it based on the FNAME_PRE_UNDERSCORE,
+**  FNAME_POST_UNDERSCORE macros set for a specific system.
+**
+**---------------------------------------------------------------*/
+#if defined(FNAME_PRE_UNDERSCORE) && defined(FNAME_POST_UNDERSCORE)
+#   define FNAME(x)     _##x##_
+#endif
+#if defined(FNAME_PRE_UNDERSCORE) && !defined(FNAME_POST_UNDERSCORE)
+#   define FNAME(x)     _##x
+#endif
+#if !defined(FNAME_PRE_UNDERSCORE) && defined(FNAME_POST_UNDERSCORE)
+#   define FNAME(x)     x##_
+#endif
+#if !defined(FNAME_PRE_UNDERSCORE) && !defined(FNAME_POST_UNDERSCORE)
+#   define FNAME(x)     x
+#endif
+
+
+#endif /* HDF5FORT_H */
+
+
+
diff --git a/src/hdf5gen.h b/src/hdf5gen.h
new file mode 100644
index 0000000..4d01685
--- /dev/null
+++ b/src/hdf5gen.h
@@ -0,0 +1,49 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains general macros used throughout HDF5 library & interfaces
+ */
+
+#ifndef HDF5GEN_H
+#define HDF5GEN_H
+
+/* return code - since some unix/c routines use 0 and -1 as their return
+   code, and some assumption had been made in the code about that, it is
+   important to keep these constants the same values.  For explicitly
+   boolean functions, use TRUE and FALSE */
+
+#define SUCCEED 0
+#define FAIL (-1)
+
+/* boolean values,  reminder: NEVER compare with numeric values */
+
+#ifndef FALSE
+#   define FALSE 0
+#endif
+#ifndef TRUE
+#   define TRUE (!FALSE)
+#endif
+
+/* Function entry & exit macros */
+#define FUNC_ENTER(pablo_mask,pablo_func_id,interface_init_func,err) \
+    { PABLO_TRACE_ON(pablo_mask,pablo_func_id); \
+        if(library_initialize==FALSE) if(H5_init_library()==FAIL) HGOTO_ERROR(H5E_FUNC,H5E_CANTINIT,err); \
+        if(thread_initialize==FALSE) if(H5_init_thread()==FAIL) HGOTO_ERROR(H5E_FUNC,H5E_CANTINIT,err); \
+        if(interface_initialize==FALSE) if(interface_init_func()==FAIL) HGOTO_ERROR(H5E_FUNC,H5E_CANTINIT,err); }
+#define FUNC_LEAVE(pablo_mask,pablo_func_id,return_value) \
+    { PABLO_TRACE_OFF(pablo_mask,pablo_func_id); return(return_value); }
+
+#endif /* HDF5GEN_H */
+
diff --git a/src/hdf5glob.h b/src/hdf5glob.h
new file mode 100644
index 0000000..2fc752d
--- /dev/null
+++ b/src/hdf5glob.h
@@ -0,0 +1,58 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ *  Header file for global & thread-specific data
+ */
+
+#ifndef HDF5GLOB_H
+#define HDF5GLOB_H
+
+/* Library global variables */
+/* There should only be a few of these, don't add more unless you have a d*mn good reason! */
+
+#ifndef HDF5_MASTER
+extern
+#endif /* HDF5_MASTER */
+intn library_initialize     /* Whether we've initialized library global information yet */
+#ifdef HDF5_MASTER
+= FALSE
+#endif /* HDF5_MASTER */
+;
+#ifndef HDF5_MASTER
+extern
+#endif /* HDF5_MASTER */
+intn install_atexit         /* Whether to install the atexit routine */
+#ifdef HDF5_MASTER
+= TRUE
+#endif /* HDF5_MASTER */
+;
+
+/* Thread-specific variables */
+#ifndef HDF5_MASTER
+extern
+#endif /* HDF5_MASTER */
+intn thread_initialize      /* Whether we've initialized thread global information yet */
+#ifdef HDF5_MASTER
+= FALSE
+#endif /* HDF5_MASTER */
+;
+
+#ifndef HDF5_MASTER
+extern
+#endif /* HDF5_MASTER */
+int32 thrderrid;     /* Thread-specific "global" error-handler ID */
+
+#endif /* HDF5GLOB_H */
+
diff --git a/src/hdf5lims.h b/src/hdf5lims.h
new file mode 100644
index 0000000..dc8648d
--- /dev/null
+++ b/src/hdf5lims.h
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains all global hard coded limits for the library, interface
+ * particular limits are defined in the interface header file.
+ */
+
+#ifndef HDF5LIMS_H
+#define HDF5LIMS_H
+
+/* Size of an OID in bytes */
+#define HDF5_OID_SIZE   8
+
+/* Version #'s of library code */
+#define HDF5_MAJOR_VERSION      0   /* For major interface changes */
+#define HDF5_MINOR_VERSION      0   /* For minor interface changes */
+#define HDF5_RELEASE_VERSION    0   /* For interface tweaks & bug-fixes */
+#define HDF5_PATCH_VERSION      0   /* For small groups of bug fixes */
+
+/* Version #'s of the major components of the file format */
+#define HDF5_BOOTBLOCK_VERSION  0   /* Version of the boot block format */
+#define HDF5_SMALLOBJECT_VERSION 0  /* Version of the Small-Object Heap */
+#define HDF5_FREESPACE_VERSION  0   /* Version of the Free-Space Info */
+#define HDF5_OBJECTDIR_VERSION  0   /* Version of the Object Directory format */
+#define HDF5_SHAREDHEADER_VERSION 0 /* Version of the Shared-Header Info */
+
+/* Define the HDF5 file signature */
+#define HDF5_FILE_SIGNATURE     "\211HDF\r\n\032\n"
+#define HDF5_FILE_SIGNATURE_LEN 8
+
+/* Maximum length of function name to push onto error stack */
+#define MAX_FUNC_NAME_LEN   32
+
+/* Default sizes of the hash-tables for various atom groups */
+#define HDF5_ERRSTACK_HASHSIZE  64
+#define HDF5_FILEID_HASHSIZE    64
+#define HDF5_TEMPID_HASHSIZE    64
+#define HDF5_DATATYPEID_HASHSIZE    64
+#define HDF5_DATASPACEID_HASHSIZE   64
+
+/* Default file-creation template values */
+#define HDF5_USERBLOCK_DEFAULT  0       /* Default to 0-byte sized user blocks */
+#define HDF5_OFFSETSIZE_DEFAULT 4       /* Default to 4-byte offsets */
+#define HDF5_LENGTHSIZE_DEFAULT 4       /* Default to 4-byte lengths */
+#define HDF5_BTREEPAGE_DEFAULT  1024    /* Default to 1024-byte B-tree pages */
+
+#endif /* HDF5LIMS_H */
+
diff --git a/src/hdf5meta.h b/src/hdf5meta.h
new file mode 100644
index 0000000..025b4e6
--- /dev/null
+++ b/src/hdf5meta.h
@@ -0,0 +1,145 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains macros & information for file meta information
+ * (offsets, lengths, etc.)
+ */
+
+#ifndef HDF5META_H
+#define HDF5META_H
+
+/*-----------------------------------------------------*/
+/*     Encode and decode macros for file meta-data     */
+/*   (Currently, all file meta-data is little-endian)  */
+/*-----------------------------------------------------*/
+
+/* For non-little-endian platforms, encode each byte by itself */
+#if ((DF_MT&0xFFF0)!=0x4440)
+#   define INT16ENCODE(p, i) \
+{ *(p) = (uint8)((uintn)(i) & 0xff); (p)++;  *(p) = (uint8)(((uintn)(i) >> 8) & 0xff); (p)++; }
+
+#   define UINT16ENCODE(p, i) \
+{ *(p) = (uint8)((i) & 0xff); (p)++; *(p) = (uint8)(((uintn)(i) >> 8) & 0xff); (p)++; }
+
+#   define INT32ENCODE(p, i) \
+{ *(p) = (uint8)((uint32)(i) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint32)(i) >> 8) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint32)(i) >> 16) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint32)(i) >> 24) & 0xff); (p)++; }
+
+#   define UINT32ENCODE(p, i) \
+{ *(p) = (uint8)((i) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 8) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 16) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 24) & 0xff); (p)++; }
+#ifdef HDF5_HAVE_NATIVE_INT64
+#   define INT64ENCODE(p, i) \
+{ *(p) = (uint8)((uint64)(i) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 8) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 16) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 24) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 32) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 40) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 48) & 0xff); (p)++; \
+    *(p) = (uint8)(((uint64)(i) >> 56) & 0xff); (p)++; }
+
+#   define UINT64ENCODE(p, i) \
+{ *(p) = (uint8)((i) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 8) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 16) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 24) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 32) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 40) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 48) & 0xff); (p)++; \
+        *(p) = (uint8)(((i) >> 56) & 0xff); (p)++; }
+#else /* HDF5_HAVE_NATIVE_INT64 */
+#error  "Define int64 on platforms which don't support it"
+#endif /* HDF5_HAVE_NATIVE_INT64 */
+
+#   define INT16DECODE(p, i) \
+{ (i) = (int16)((*(p) & 0xff)); (p)++; \
+    (i) |= (int16)((*(p) & 0xff) << 8); (p)++; }
+
+#   define UINT16DECODE(p, i) \
+{ (i) = (uint16)(*(p) & 0xff); (p)++; \
+    (i) |= (uint16)((*(p) & 0xff) << 8); (p)++; }
+
+#   define INT32DECODE(p, i) \
+{ (i) = (*(p) & 0xff); (p)++; \
+    (i) |= ((int32)(*(p) & 0xff) << 8); (p)++; \
+    (i) |= ((int32)(*(p) & 0xff) << 16); (p)++; \
+    (i) |= ((int32)(*(p) & 0xff) << 24); (p)++; }
+
+#   define UINT32DECODE(p, i) \
+{ (i) = (uint32)(*(p) & 0xff); (p)++; \
+    (i) |= ((uint32)(*(p) & 0xff) << 8); (p)++; \
+    (i) |= ((uint32)(*(p) & 0xff) << 16); (p)++; \
+    (i) |= ((uint32)(*(p) & 0xff) << 24); (p)++; }
+
+#ifdef HDF5_HAVE_NATIVE_INT64
+#define INT64DECODE(p, i) \
+{ (i) = (*(p) & 0xff); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 8); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 16); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 24); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 32); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 40); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 48); (p)++; \
+    (i) |= ((int64)(*(p) & 0xff) << 56); (p)++; }
+
+#   define UINT64DECODE(p, i) \
+{ (i) = (uint64)(*(p) & 0xff); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 8); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 16); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 24); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 32); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 40); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 48); (p)++; \
+    (i) |= ((uint64)(*(p) & 0xff) << 56); (p)++; }
+#else /* HDF5_HAVE_NATIVE_INT64 */
+#error  "Define int64 on platforms which don't support it"
+#endif /* HDF5_HAVE_NATIVE_INT64 */
+#else   /* platform has little-endian integers */
+/* For little-endian platforms, make the compiler do the work */
+#   define INT16ENCODE(p, i) { *((int16 *)(p)) = (int16)(i); (p)+=2; }
+#   define UINT16ENCODE(p, i) { *((uint16 *)(p)) = (uint16)(i); (p)+=2; }
+#   define INT32ENCODE(p, i) { *((int32 *)(p)) = (int32)(i); (p)+=4; }
+#   define UINT32ENCODE(p, i) { *((uint32 *)(p)) = (uint32)(i); (p)+=4; }
+#ifdef HDF5_HAVE_NATIVE_INT64
+#   define INT64ENCODE(p, i) { *((int64 *)(p)) = (int64)(i); (p)+=8; }
+#   define UINT64ENCODE(p, i) { *((uint64 *)(p)) = (uint64)(i); (p)+=8; }
+#else /* HDF5_HAVE_NATIVE_INT64 */
+#error  "Define int64 on platforms which don't support it"
+#endif /* HDF5_HAVE_NATIVE_INT64 */
+#   define INT16DECODE(p, i) { (i) = (int16)(*(int16 *)(p)); (p)+=2; }
+#   define UINT16DECODE(p, i) { (i) = (uint16)(*(uint16 *)(p)); (p)+=2; }
+#   define INT32DECODE(p, i) { (i) = (int32)(*(int32 *)(p)); (p)+=4; }
+#   define UINT32DECODE(p, i) { (i) = (uint32)(*(uint32 *)(p)); (p)+=4; }
+#ifdef HDF5_HAVE_NATIVE_INT64
+#   define INT64DECODE(p, i) { (i) = (int64)(*(int64 *)(p)); (p)+=8; }
+#   define UINT64DECODE(p, i) { (i) = (uint64)(*(uint64 *)(p)); (p)+=8; }
+#else /* HDF5_HAVE_NATIVE_INT64 */
+#error  "Define int64 on platforms which don't support it"
+#endif /* HDF5_HAVE_NATIVE_INT64 */
+#endif
+
+#   define NBYTEENCODE(d, s, n) {   HDmemcpy(d,s,n); p+=n }
+
+/* Note! the NBYTEDECODE macro is backwards from the memcpy() routine, */
+/*      in the spirit of the other DECODE macros */
+#   define NBYTEDECODE(s, d, n) {   HDmemcpy(d,s,n); p+=n }
+
+#endif /* HDF5I_H */
+
diff --git a/src/hdf5pabl.h b/src/hdf5pabl.h
new file mode 100644
index 0000000..0df5913
--- /dev/null
+++ b/src/hdf5pabl.h
@@ -0,0 +1,32 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ *  Header file for Pablo compatibility
+ */
+
+#ifndef HDF5PABL_H
+#define HDF5PABL_H
+
+#ifdef HAVE_PABLO
+#define PABLO_TRACE_ON(m, f) TRACE_ON(m,f)
+#define PABLO_TRACE_OFF(m, f) TRACE_OFF(m,f)
+#else /* no Pablo tracing enabled */
+#define PABLO_TRACE_ON(m, f) 
+#define PABLO_TRACE_OFF(m, f)
+#endif /* HAVE_PABLO */
+
+#endif /* HDF5PABL_H */
+
+
diff --git a/src/hdf5plat.h b/src/hdf5plat.h
new file mode 100644
index 0000000..5c5f649
--- /dev/null
+++ b/src/hdf5plat.h
@@ -0,0 +1,750 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains platform/CPU/OS detection macros, etc.
+ */
+
+#ifndef HDF5PLAT_H
+#define HDF5PLAT_H
+
+/*--------------------------------------------------------------------------*/
+/*                              MT/NT constants                             */
+/*  Six MT nibbles represent float64, float32, int64, int32, int16, and     */
+/*      int8 (from most significant to least significant).  The unsigned    */
+/*      form of each type is assumed to be in the same format as the signed */
+/*      type.  The top two nibbles (8-bits) are currently unused.           */
+/*  The values for each nibble are:                                         */
+/*      1 - Big Endian                                                      */
+/*      2 - VAX                                                             */
+/*      3 - Cray                                                            */
+/*      4 - Little Endian                                                   */
+/*      5 - Convex                                                          */
+/*      6 - Fujitsu VP                                                      */
+/*--------------------------------------------------------------------------*/
+#define     DFMT_SUN            0x00111111
+#define     DFMT_ALLIANT        0x00111111
+#define     DFMT_IRIX           0x00111111
+#define     DFMT_APOLLO         0x00111111
+#define     DFMT_IBM6000        0x00111111
+#define     DFMT_HP9000         0x00111111
+#define     DFMT_CONVEXNATIVE   0x00551111
+#define     DFMT_CONVEX         0x00111111
+#define     DFMT_UNICOS         0x00333331
+#define     DFMT_CTSS           0x00333331
+#define     DFMT_VAX            0x00222221
+#define     DFMT_MIPSEL         0x00444441
+#define     DFMT_PC             0x00444441
+#define     DFMT_MAC            0x00111111
+#define     DFMT_SUN386         0x00444441
+#define     DFMT_NEXT           0x00111111
+#define     DFMT_MOTOROLA       0x00111111
+#define     DFMT_ALPHA          0x00444441
+#define     DFMT_VP             0x00661111
+#define     DFMT_I860           0x00444441
+#define     DFMT_CRAYMPP        0x00117771
+
+/* I/O library constants */
+#define POSIXUNBUFIO 1  /* POSIX-compliant un-buffered I/O */
+#define POSIXBUFIO   2  /* POSIX buffered I/O */
+#define MACIO        3  /* Macintosh I/O */
+#define WINNTIO      4  /* 32-bit Windows File I/O */
+#define PAGEBUFIO    5  /* page buffering - fmpool */
+
+#ifdef GOT_MACHINE
+#undef GOT_MACHINE
+#endif
+
+/*-------------------------------------------------------------------------
+ * Define options for each platform
+ *-------------------------------------------------------------------------*/
+
+#if (defined(SUN) || defined(sun) || defined(__sun__) || defined(__SUNPRO_C)) & !defined(__i386)
+#ifdef __STDC__
+#define ANSISUN
+#else /* __STDC__ */
+#define KNRSUN
+#endif /* __STDC__ */
+#endif /* SUN || sun */
+
+/*
+ * CPU: Sparc
+ * OS: Solaris 1.x, SunOS 4.1.x
+ */
+#if defined(ANSISUN)
+
+#if !defined(SUN)
+#define SUN
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#include <unistd.h>                 /* for some file I/O stuff */
+#include <sys/time.h>
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_SUN
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+
+#endif /* ANSISUN */
+
+/*
+ * CPU: IBM RS/6000 chip/PowerPC
+ * OS: AIX
+ */
+#if defined(IBM6000) || defined(_AIX)
+
+#ifndef IBM6000
+#define IBM6000
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#   define BSD
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_IBM6000
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+
+#endif /* IBM6000 */
+
+/*
+ * CPU: HP PA-RISC
+ * OS: HP/UX (ConvexOS?)
+ */
+#if defined(HP9000) || (!defined(__convexc__) && (defined(hpux) || defined(__hpux)))
+
+#ifndef HP9000
+#define HP9000
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#define HAVE_UNISTD_H  /* unistd.h - close, fork,..etc */
+#   define BSD
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_HP9000
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /* HP9000 */
+
+
+/*
+ * CPU: MIPS
+ * OS: IRIX
+ */
+#if defined(IRIX) || defined(IRIS4) || defined(sgi) || defined(__sgi__) || defined(__sgi)
+
+#ifndef IRIX
+#define IRIX
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#   define BSD
+#ifndef __GNUC__
+#include <memory.h>
+#endif /* __GNUC__ */
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT              DFMT_IRIX
+
+/* Define portable variable types */
+typedef void               VOID;
+typedef void              *VOIDP;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef signed char        char8;
+typedef unsigned char      uchar8;
+typedef signed char        int8;
+typedef unsigned char      uint8;
+typedef short int          int16;
+typedef unsigned short int uint16;
+typedef int                int32;
+typedef unsigned int       uint32;
+typedef int                intn;
+typedef unsigned int       uintn;
+typedef float              float32;
+typedef double             float64;
+typedef int                intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+
+#endif /* IRIX */
+
+/*
+ * CPU: Cray Vector CPU (is there a name for these? :-)
+ * OS: UNICOS
+ */
+#if (defined(UNICOS) || defined(_UNICOS)) && !defined(_CRAYMPP)
+
+#ifndef UNICOS
+#define UNICOS
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <memory.h>
+#include <fortran.h>
+#ifndef O_RDONLY
+#include <fcntl.h>              /* for unbuffered i/o stuff */
+#define L_INCR  1
+#include <sys/stat.h>
+#endif /*O_RDONLY*/
+
+/* Set machine byte-format */
+#define DF_MT   DFMT_UNICOS
+
+/* Define portable variable types */
+typedef void            VOID;
+typedef void            *VOIDP;
+#ifdef OLD_WAY /* May need to be included on other machines than the C-90 */
+typedef char            *_fcd;    /* Fortran character descriptor type */
+#endif /* OLD_WAY */
+typedef signed char     char8;
+typedef unsigned char   uchar8;
+typedef signed char     int8;
+typedef unsigned char   uint8;
+typedef int             int16;
+typedef unsigned int    uint16;
+typedef int             int32;
+typedef unsigned int    uint32;
+typedef int             intn;
+typedef unsigned int    uintn;
+typedef float           float32;
+typedef double          float64;
+typedef int             intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define DF_CAPFNAMES            /* fortran names are in all caps */
+/* fcdtocp(desc) is defined in compiler header files */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define RIGHT_SHIFT_IS_UNSIGNED
+#define CHAR_IS_UNSIGNED
+
+#endif /* UNICOS */
+
+/*
+ * CPU: Cray Vector CPU (is there a name for these? :-)
+ * OS: UNICOS (on massively parallel systems, like T3D & T3E)
+ */
+#if defined(_CRAYMPP)
+
+#ifndef CRAYMPP
+#define CRAYMPP
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <memory.h>
+#include <fortran.h>
+#ifndef O_RDONLY
+#include <fcntl.h>              /* for unbuffered i/o stuff */
+#define L_INCR  1
+#include <sys/stat.h>
+#endif /*O_RDONLY*/
+
+/* Set machine byte-format */
+#define DF_MT   DFMT_CRAYMPP
+
+/* Define portable variable types */
+typedef void            VOID;
+typedef void            *VOIDP;
+#ifdef OLD_WAY /* May need to be included on other machines than the C-90 */
+typedef char            *_fcd;    /* Fortran character descriptor type */
+#endif /* OLD_WAY */
+typedef signed char     char8;
+typedef unsigned char   uchar8;
+typedef signed char     int8;
+typedef unsigned char   uint8;
+typedef short           int16;
+typedef unsigned short  uint16;
+typedef short           int32;
+typedef unsigned short  uint32;
+typedef int             intn;
+typedef unsigned int    uintn;
+typedef float           float32;
+typedef double          float64;
+typedef int             intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define DF_CAPFNAMES            /* fortran names are in all caps */
+/* fcdtocp(desc) is defined in compiler header files */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define RIGHT_SHIFT_IS_UNSIGNED
+#define CHAR_IS_UNSIGNED
+
+#endif /* CRAYMPP */
+
+
+/*
+ * CPU: Motorola 68K, PowerPC (both?)
+ * OS: MacOS
+ */
+#if defined(MAC) || defined(macintosh) || defined(__MWERKS__) || defined (SYMANTEC_C)
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <memory.h>             /* malloc stuff for MPW */
+#include <fcntl.h>              /* unbuffered I/O stuff for MPW */
+#ifdef __MWERKS__  /* Metrowerks */
+#include <sioux.h>
+#include <console.h>
+#endif
+#ifdef SYMANTEC_C                  /* for SYMANTEC C */
+#include <unix.h>
+#define isascii(c)  (isprint(c) || iscntrl(c))
+#else  /* MPW, possibly others */
+#include <Files.h>              /* for unbuffered I/O stuff */
+#endif /* SYMANTEC_C*/
+#define DF_DYNAMIC              /* use dynamic allocation */
+
+/* Set machine byte-format */
+#define DF_MT   DFMT_MAC
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#ifndef ABSOFT
+#define DF_CAPFNAMES            /* fortran names are in all caps */
+#endif /* ABSOFT */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+void exit(int status);
+
+/* Choose the I/O package to use when interacting with the file */
+#define FILELIB MACIO
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+
+#endif /*MAC*/
+
+/*
+ * CPU: Intel x86
+ * OS: MS Windows '95, Windows NT (& Dos32?), also Linux & FreeBSD
+ */
+/* Metrowerks compilier defines some PC stuff so need to exclude this on the MAC */
+#if !(defined(__MWERKS__) || defined(MAC))
+
+#if defined INTEL86 || defined M_I86 || defined M_I386 || defined DOS386 || defined __i386 || defined UNIX386
+#ifndef INTEL86
+#define INTEL86
+#endif /* INTEL86 */
+
+#if !defined UNIX386 && (defined unix || defined __unix)
+#define UNIX386
+#endif /* UNIX386 */
+
+#if !defined DOS386 && defined M_I386
+#define DOS386
+#endif /* M_I386 && !DOS386 */
+
+#if defined _WINDOWS || defined WIN32
+#define WIN386
+#endif  /* _WINDOWS | WIN32 */
+
+#if defined WIN386 || defined DOS386 || defined UNIX386
+#define INTEL386
+#endif /* WIN386 | DOS386 | UNIX386 */
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE 1
+
+/* Extra include files required for this platform */
+#include <fcntl.h>
+#ifdef UNIX386
+#include <sys/types.h>      /* for unbuffered file I/O */
+#include <sys/stat.h>
+#include <unistd.h>
+#else /* !UNIX386 */
+#include <sys\types.h>      /* for unbuffered file I/O */
+#include <sys\stat.h>
+#include <io.h>
+#include <conio.h>          /* for debugging getch() calls */
+#include <malloc.h>
+#endif /* UNIX386 */
+#include <ctype.h>          /* for character macros */
+#ifdef __WATCOMC__
+#include <stddef.h>         /* for the 'fortran' pragma */
+#endif
+#if defined WIN386
+#ifndef GMEM_MOVEABLE       /* check if windows header is already included */
+#include <windows.h>        /* include the windows headers */
+#include <winnt.h>
+#define HAVE_BOOLEAN
+#endif /* GMEM_MOVEABLE */
+#endif /* WIN386 */
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_PC
+
+/* Define portable variable types */
+#ifndef VOID    /* The stupid windows.h header file uses a #define instead of a typedef */
+typedef void              VOID;
+#endif  /* end VOID */
+typedef void *            VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+typedef long int          int32;
+typedef unsigned long int uint32;
+#ifdef __GNUC__
+#define HDF5_HAVE_NATIVE_INT64
+typedef long long int          int64;   /* 64-bit integers! */
+typedef unsigned long long int uint64;
+#endif
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef long              intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#if defined UNIX386
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#elif defined INTEL386
+#define DF_CAPFNAMES                /* Fortran function names need to be all-caps */
+#endif
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#if defined WIN386
+#define FILELIB WINNTIO
+#else
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+#endif /* WIN386 */
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+
+#endif /* INTEL86 */
+#endif /* !(defined(__MWERKS__) || defined(MAC)) */
+
+
+/*
+ * CPU: Alpha
+ * OS: Dec Unix (used to be called OSF/1)
+ */
+#if defined DEC_ALPHA || (defined __alpha && defined __unix__)
+
+#ifndef DEC_ALPHA
+#define DEC_ALPHA
+#endif
+
+#ifdef GOT_MACHINE
+If you get an error on this line more than one machine type has been defined.
+Please check your Makefile.
+#endif
+#define GOT_MACHINE
+
+/* Extra include files required for this platform */
+#include <sys/file.h>               /* for unbuffered i/o stuff */
+#include <sys/stat.h>
+
+/* Set machine byte-format */
+#define DF_MT             DFMT_ALPHA
+
+/* Define portable variable types */
+typedef void              VOID;
+typedef void              *VOIDP;
+typedef char              char8;
+typedef unsigned char     uchar8;
+typedef char              int8;
+typedef unsigned char     uint8;
+typedef short int         int16;
+typedef unsigned short int uint16;
+#ifndef __rpc_types_h
+typedef int               int32;
+typedef unsigned int      uint32;
+#endif /* __rpc_types_h */
+typedef int               intn;
+typedef unsigned int      uintn;
+typedef float             float32;
+typedef double            float64;
+typedef char              *_fcd;    /* Fortran character descriptor type */
+typedef int               intf;     /* size of INTEGERs in Fortran compiler */
+
+/* Fortran compatibility macros */
+#define FNAME_POST_UNDERSCORE       /* Fortran function names require trailing underscore */
+#define _fcdtocp(desc) (desc)       /* Macro to convert from Fortran character descriptor to C 'char *' */
+
+/* Choose the I/O package to use when interacting with the file */
+#ifdef  HAVE_FMPOOL
+#define FILELIB PAGEBUFIO  /* enable page buffering */
+#else
+#define FILELIB POSIXBUFIO
+#endif
+
+/* JPEG #define's - Look in the JPEG docs before changing - (Q) */
+
+/* Determine the memory manager we are going to use. Valid values are: */
+/*  MEM_DOS, MEM_ANSI, MEM_NAME, MEM_NOBS.  See the JPEG docs for details on */
+/*  what each does */
+#define JMEMSYS         MEM_ANSI
+#ifdef __GNUC__
+#define HAVE_STDC
+#define INCLUDES_ARE_ANSI
+#endif
+
+#endif /* DEC_ALPHA */
+
+#include "h5oplat.h"       /* include definitions for old, untested platforms */
+
+/* Check if we've correctly determined the platform we are compiling in/for */
+#ifndef GOT_MACHINE
+No machine type has been defined.  Your Makefile needs to have someing like
+-DSUN or -DUNICOS in order for the HDF internal structures to be defined
+correctly.
+#endif
+
+#endif /* HDF5PLAT_H */
+
diff --git a/src/hdf5port.h b/src/hdf5port.h
new file mode 100644
index 0000000..bdec34f
--- /dev/null
+++ b/src/hdf5port.h
@@ -0,0 +1,202 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ * This file contains portability macros to ease moving the library between
+ * the various platforms.
+ */
+
+#ifndef HDF5PORT_H
+#define HDF5PORT_H
+
+/**************************************************************************
+*  Generally useful macro definitions
+**************************************************************************/
+#ifndef MIN
+#define MIN(a,b)    (((a)<(b)) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(a,b)    (((a)>(b)) ? (a) : (b))
+#endif
+
+/**************************************************************************
+*  Macros to work around ANSI C portability problems.
+**************************************************************************/
+#ifdef DUMBCC
+#define CONSTR(v,s) char *v=s
+#else
+#define CONSTR(v,s) static const char v[]=s
+#endif
+
+/* -------------------------- File I/O Functions -------------------------- */
+/* FILELIB -- file library to use for file access: 1 stdio, 2 fcntl
+   default to stdio library i.e. POSIX buffered I/O */
+
+#ifndef FILELIB
+#   define FILELIB POSIXBUFIO    /* POSIX buffered I/O is the default */
+#endif /* FILELIB */
+
+#if (FILELIB == POSIXBUFIO)
+typedef FILE *hdf_file_t;
+#ifdef VMS
+/* For VMS, use "mbc=64" to improve performance     */
+#   define H5FI_OPEN(p, a)      (((a)&H5ACC_WRITE) ? fopen((p),"r+","mbc=64") : fopen((p), "r", "mbc=64"))
+#   define H5FI_CREATE(p)       (fopen((p), "w+", "mbc=64"))
+#else  /*  !VMS  */
+#if defined SUN && defined (__GNUC__)
+#   define H5FI_OPEN(p, a)      (((a)&H5ACC_WRITE) ? fopen((p), "r+") : fopen((p), "r"))
+#   define H5FI_CREATE(p)       (fopen((p), "w+"))
+#else /* !SUN w/ GNU CC */
+#   define H5FI_OPEN(p, a)      (((a)&H5ACC_WRITE) ? fopen((p), "rb+") : fopen((p), "rb"))
+#   define H5FI_CREATE(p)       (fopen((p), "wb+"))
+#endif /* !SUN w/ GNU CC */
+#endif /* VMS */
+#   define H5FI_READ(f, b, n)   (((size_t)(n) == (size_t)fread((b), 1, (size_t)(n), (f))) ? SUCCEED : FAIL)
+#   define H5FI_WRITE(f, b, n)  (((size_t)(n) == (size_t)fwrite((b), 1, (size_t)(n), (f))) ? SUCCEED : FAIL)
+#   define H5FI_CLOSE(f)        (fclose(f))
+#   define H5FI_FLUSH(f)        (fflush(f)==0 ? SUCCEED : FAIL)
+#   define H5FI_SEEK(f,o)       (fseek((f), (long)(o), SEEK_SET)==0 ? SUCCEED : FAIL)
+#   define H5FI_SEEK_CUR(f,o)   (fseek((f), (long)(o), SEEK_CUR)==0 ? SUCCEED : FAIL)
+#   define H5FI_SEEKEND(f)      (fseek((f), (long)0, SEEK_END)==0 ? SUCCEED : FAIL)
+#   define H5FI_TELL(f)         (ftell(f))
+#   define H5FI_OPENERR(f)      ((f) == (FILE *)NULL)
+#   define H5FI_INVALID_FILE    ((FILE *)NULL)
+#endif /* FILELIB == POSIXBUFIO */
+
+#if (FILELIB == POSIXUNBUFIO)
+/* using POSIX unbuffered file I/O routines to access files */
+typedef int hdf_file_t;
+#   define H5FI_OPEN(p, a)      (((a) & H5ACC_WRITE) ? open((p), O_RDWR) : open((p), O_RDONLY))
+#   define H5FI_CREATE(p)       (open((p), O_RDWR | O_CREAT | O_TRUNC))
+#   define H5FI_CLOSE(f)        (close(f))
+#   define H5FI_FLUSH(f)        (SUCCEED)
+#   define H5FI_READ(f, b, n)   (((n)==read((f), (char *)(b), (n))) ? SUCCEED : FAIL)
+#   define H5FI_WRITE(f, b, n)  (((n)==write((f), (char *)(b), (n))) ? SUCCEED : FAIL)
+#   define H5FI_SEEK(f, o)      (lseek((f), (off_t)(o), SEEK_SET)!=(-1) ? SUCCEED : FAIL)
+#   define H5FI_SEEKEND(f)      (lseek((f), (off_t)0, SEEK_END)!=(-1) ? SUCCEED : FAIL)
+#   define H5FI_TELL(f)         (lseek((f), (off_t)0, SEEK_CUR))
+#   define H5FI_OPENERR(f)      (f < 0)
+#   define H5FI_INVALID_FILE    ((int)-1)
+#endif /* FILELIB == POSIXUNBUFIO */
+
+#if (FILELIB == MACIO)
+/* using special routines to redirect to Mac Toolkit I/O */
+typedef short hdf_file_t;
+#   define H5FI_OPEN(x,y)       mopen(x,y)
+#   define H5FI_CREATE(name)    mopen(name, H5ACC_CREATE)
+#   define H5FI_CLOSE(x)        mclose(x)
+#   define H5FI_FLUSH(a)        (SUCCEED)
+#   define H5FI_READ(a,b,c)     mread(a, (char *) b, (int32) c)
+#   define H5FI_WRITE(a,b,c)    mwrite(a, (char *) b, (int32) c)
+#   define H5FI_SEEK(x,y)       mlseek(x, (int32 )y, 0)
+#   define H5FI_SEEKEND(x)      mlseek(x, 0L, 2)
+#   define H5FI_TELL(x)         mlseek(x,0L,1)
+#   define H5FI_OPENERR(f)      (f < 0)
+#   define H5FI_INVALID_FILE    ((short)-1)
+#endif /* FILELIB == MACIO */
+
+#if (FILELIB == WINNTIO)
+/* using special Windows NT functions to enable reading/writing large chunks */
+typedef HFILE hdf_file_t;
+#   define H5FI_OPEN(p, a)      (((a) & H5ACC_WRITE) ? _lopen((p), OF_READWRITE) : _lopen((p), OF_READ))
+#   define H5FI_CREATE(p)       (_lcreat((p), 0))
+#   define H5FI_READ(f, b, n)   (((int32)(n) == _hread((f), (b), (n))) ? SUCCEED : FAIL)
+#   define H5FI_WRITE(f, b, n)  (((int32)(n) == _hwrite((f), (b), (n))) ? SUCCEED : FAIL)
+#   define H5FI_CLOSE(f)        (_lclose(f)==0 ? SUCCEED : FAIL)
+#   define H5FI_FLUSH(f)        (0)
+#   define H5FI_SEEK(f, o)      (_llseek((f), (long)(o), 0))
+#   define H5FI_SEEKEND(f)      (_llseek((f), (long)0, 2))
+#   define H5FI_TELL(f)         (_llseek((f),0l,1))
+#   define H5FI_OPENERR(f)      ((f) == (HFILE)HFILE_ERROR)
+#   define H5FI_INVALID_FILE    ((HFILE)HFILE_ERROR)
+#endif /* FILELIB == WINNTIO */
+
+#if (FILELIB == PAGEBUFIO)
+#include "fmpio.h"
+/* using page buffered file I/O routines to access files */
+typedef MPFILE *hdf_file_t;
+#   define H5FI_OPEN(p, a)      (MPopen((p), (a)))
+#   define H5FI_CREATE(p)       (MPopen((p), H5ACC_CREATE))
+#   define H5FI_CLOSE(f)        (MPclose(f))
+#   define H5FI_FLUSH(f)        (MPflush(f))
+#   define H5FI_READ(f, b, n)   (MPread((f), (char *)(b), (n)))
+#   define H5FI_WRITE(f, b, n)  (MPwrite((f), (char *)(b), (n)))
+#   define H5FI_SEEK(f, o)      (MPseek((f), (off_t)(o), SEEK_SET))
+#   define H5FI_SEEKEND(f)      (MPseek((f), (off_t)0, SEEK_END))
+#   define H5FI_TELL(f)         (MPseek((f), (off_t)0, SEEK_CUR))
+#   define H5FI_OPENERR(f)      ((f) == (MPFILE *)NULL)
+#   define H5FI_INVALID_FILE    ((MPFILE *)NULL)
+#endif /* FILELIB == PAGEBUFIO */
+
+/**************************************************************************
+*  Allocation functions defined differently 
+**************************************************************************/
+#if !defined MALLOC_CHECK
+#  define HDmalloc(s)      (malloc((size_t)s))
+#  define HDcalloc(a,b)    (calloc((size_t)a,(size_t)b))
+#  define HDfree(p)        (free((void*)p))
+#  define HDrealloc(p,s)   (realloc((void*)p,(size_t)s))
+#endif /* !defined MALLOC_CHECK */
+/* Macro to free space and clear pointer to NULL */
+#define HDfreenclear(p) { if((p)!=NULL) HDfree(p); p=NULL; }
+
+/**************************************************************************
+*  String functions defined differently 
+**************************************************************************/
+
+#  define HDstrcat(s1,s2)   (strcat((s1),(s2)))
+#  define HDstrcmp(s,t)     (strcmp((s),(t)))
+#  define HDstrcpy(s,d)     (strcpy((s),(d)))
+#  define HDstrlen(s)       (strlen((const char *)(s)))
+#  define HDstrncmp(s1,s2,n)    (strncmp((s1),(s2),(n)))
+#  define HDstrncpy(s1,s2,n)    (strncpy((s1),(s2),(n)))
+#  define HDstrchr(s,c)         (strchr((s),(c)))
+#  define HDstrrchr(s,c)        (strrchr((s),(c)))
+#  define HDstrtol(s,e,b)       (strtol((s),(e),(b)))
+/* non-standard function, not defined on the following mahcines - */
+#if !(defined VMS || defined macintosh || defined MAC || defined __MWERKS__ || defined SYMANTEC_C || defined MIPSEL || defined NEXT || defined CONVEX || defined IBM6000 || defined ANSISUN || defined IRIX)
+#  define HDstrdup(s)      ((char *)strdup((const char *)(s)))
+#endif /* !(VMS | etc..) */
+
+
+/**************************************************************************
+*  Memory functions defined differently
+**************************************************************************/
+
+# define HDmemcpy(dst,src,n)   (memcpy((void *)(dst),(const void *)(src),(size_t)(n)))
+# define HDmemmove(dst,src,n)  (memmove((void*)(dst),(const void *)(src),(size_t)(n)))
+# define HDmemset(dst,c,n)     (memset((void *)(dst),(intn)(c),(size_t)(n)))
+# define HDmemcmp(dst,src,n)   (memcmp((const void *)(dst),(const void *)(src),(size_t)(n)))
+
+
+/**************************************************************************
+*  Misc. functions
+**************************************************************************/
+#if defined (MAC) || defined (macintosh) || defined(__MWERKS__) || defined (SYMANTEC_C)
+#define HDstat(path, result)	(mstat(path))
+#else /* !macintosh */
+#define HDstat(path, result)	(stat(path, result))
+#endif /* !macintosh */
+#define HDgetcwd(s,l)           (getcwd(s,l))
+#define HDgetenv(s1)            (getenv(s1))
+#define HDputenv(s1)            (putenv(s1))
+#define HDltoa(v)               (ltoa(v))
+#if defined (SUN) && defined(__GNUC__)
+#define HDatexit(f)             (0) /* we punt on the SUN using gcc */
+#else /* !SUN & GCC */
+#define HDatexit(f)             (atexit(f))
+#endif /* !SUN & GCC */
+
+#endif /* HDF5PORT_H */
+
diff --git a/src/hdf5type.h b/src/hdf5type.h
new file mode 100644
index 0000000..ac5ffa3
--- /dev/null
+++ b/src/hdf5type.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * hdf/COPYING file.                                                        *
+ *                                                                          *
+ ****************************************************************************/
+
+/* $Id$ */
+
+/*
+ *  Header file for library-global generic typedefs
+ */
+
+#ifndef HDF5TYPE_H
+#define HDF5TYPE_H
+
+/* 
+ * Define the standard error-value return type.  This type should be used for
+ * functions which return SUCCEED/FAIL, instead of intn...
+ */
+typedef intn herr_t;    /* Generic error-value type */
+
+/* Object types for "meta" interface */
+typedef group_t hobjtype_t;     /* Map the object in the "meta" interface to atom groups */
+
+/* File-creation template information structure */
+typedef struct {
+    /* These object aren't ref. counted, I can't think of a good reason why you'd access each one more than once */
+    /* uintn ref_count;            Reference count for number of times object is accessed */
+    uintn userblock_size;       /* Size of the user block in the file in bytes */
+    uintn offset_size;          /* Number of bytes for offsets */
+    uintn length_size;          /* Number of bytes for lengths */
+    uintn btree_page_size;      /* Number of bytes for B-Tree pages */
+    uint8 bootblock_ver;        /* Version # of the bootblock */
+    uint8 smallobject_ver;      /* Version # of the small-object heap */
+    uint8 freespace_ver;        /* Version # of the free-space information */
+    uint8 objectdir_ver;        /* Version # of the object directory format */
+    uint8 sharedheader_ver;     /* Version # of the shared header format */
+ } file_create_temp_t;
+
+/* Parameters to use when retrieving file-creation template information */
+typedef enum {
+    H5_USERBLOCK_SIZE,          /* (uintn) Size of the user block in the file in bytes */
+    H5_OFFSET_SIZE,             /* (uintn) Number of bytes for offsets */
+    H5_LENGTH_SIZE,             /* (uintn) Number of bytes for lengths */
+    H5_BTREE_SIZE,              /* (uintn) Number of bytes for B-Tree pages */
+    H5_BOOTBLOCK_VER,           /* (uint8) Version # of the boot-block format */
+    H5_SMALLOBJECT_VER,         /* (uint8) Version # of the small-object heap format */
+    H5_FREESPACE_VER,           /* (uint8) Version # of the free-space info format */
+    H5_OBJECTDIR_VER,           /* (uint8) Version # of the object-directory format */
+    H5_SHAREDHEADER_VER         /* (uint8) Version # of the shared-header format */
+ } file_create_param_t;
+
+/* HDF boolean type */
+typedef enum {
+    BFAIL=(-1),                  /* error value */
+    BFALSE=0,
+    BTRUE=1
+ } hbool_t;
+
+/* Unsigned integer error value (don't really know where else to put this - QAK) */
+#define UFAIL   (unsigned)(-1)
+
+#endif /* HDF5TYPE_H */
+