[svn-r5951]

Purpose:
    New API functions
Description:
    Added API functions to return pointer to low-level file handle
    (H5Fget_vfd_handle and H5FDget_vfd_handle) and related property list
    setting functions(H5Pset_family_offset and H5Pset_multi_type).
Platforms tested:
    Linux 2.2(eirene), Solaris 2.7(arabica), IRIX64 6.5(modi4)

21 files changed, 848 insertions, 6 deletions

diff --git a/src/H5F.c b/src/H5F.c
index 9ca7e12..0a9c64d 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -205,6 +205,8 @@ H5F_init_interface(void)
     hid_t           driver_id           = H5F_ACS_FILE_DRV_ID_DEF;
     void            *driver_info        = H5F_ACS_FILE_DRV_INFO_DEF;
     H5F_close_degree_t close_degree     = H5F_CLOSE_DEGREE_DEF;
+    hsize_t         family_offset       = H5F_ACS_FAMILY_OFFSET_DEF;
+    H5FD_mem_t      mem_type            = H5F_ACS_MULTI_TYPE_DEF;
 
     /* File mount property class variable. 
      * - Mount property class to modify
@@ -385,6 +387,13 @@ H5F_init_interface(void)
         if(H5P_register(acs_pclass,H5F_CLOSE_DEGREE_NAME,H5F_CLOSE_DEGREE_SIZE, &close_degree,NULL,NULL,NULL,NULL,NULL,NULL)<0)
              HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class");
 
+        /* Register the offset of family driver info */
+        if(H5P_register(acs_pclass,H5F_ACS_FAMILY_OFFSET_NAME,H5F_ACS_FAMILY_OFFSET_SIZE, &family_offset,NULL,NULL,NULL,NULL,NULL,NULL)<0)
+             HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class");
+
+        /* Register the data type of multi driver info */
+        if(H5P_register(acs_pclass,H5F_ACS_MULTI_TYPE_NAME,H5F_ACS_MULTI_TYPE_SIZE, &mem_type,NULL,NULL,NULL,NULL,NULL,NULL)<0)
+             HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class");
     } /* end if */
 
     /* Only register the default property list if it hasn't been created yet */
@@ -1165,6 +1174,74 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5Fget_vfd_handle
+ *
+ * Purpose:     Returns a pointer to the file handle of the low-level file
+ *              driver.
+ *
+ * Return:      Success:        non-negative value. 
+ *
+ *              Failture:       negative. 
+ * 
+ * Programmer:  Raymond Lu
+ *              Sep. 16, 2002
+ *
+ * Modification:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t H5Fget_vfd_handle(hid_t file_id, hid_t fapl, void** file_handle)
+{
+    H5F_t               *file=NULL;
+    herr_t              ret_value;
+    
+    FUNC_ENTER_API(H5Fget_vfd_handle, NULL);
+
+    /* Check args */
+    assert(file_handle);
+    if(NULL==(file=H5I_object_verify(file_id, H5I_FILE)))
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file id");
+
+    ret_value=H5F_get_vfd_handle(file, fapl, file_handle);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5F_get_vfd_handle
+ *
+ * Purpose:     Returns a pointer to the file handle of the low-level file
+ *              driver.  This is the private function for H5Fget_vfd_handle.
+ *
+ * Return:      Success:        Non-negative.
+ *
+ *              Failture:       negative.
+ *
+ * Programmer:  Raymond Lu
+ *              Sep. 16, 2002
+ *
+ * Modification:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t H5F_get_vfd_handle(H5F_t *file, hid_t fapl, void**file_handle) 
+{
+    herr_t ret_value;
+
+    FUNC_ENTER_NOINIT(H5F_get_vfd_handle);
+
+    assert(file_handle);
+    if((ret_value=H5FD_get_vfd_handle(file->shared->lf, fapl, file_handle)) < 0)
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get file handle for file driver");
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5F_equal
  *
  * Purpose:	Compares NEEDLE to a file from the HAYSTACK.
diff --git a/src/H5FD.c b/src/H5FD.c
index dd15734..8534b38 100644
--- a/src/H5FD.c
+++ b/src/H5FD.c
@@ -2872,3 +2872,62 @@ done:
     FUNC_LEAVE(ret_value);
 } /* end H5F_get_fileno() */
 
+
+/*--------------------------------------------------------------------------
+ * Function:    H5FDget_vfd_handle
+ *
+ * Purpose:     Returns a pointer to the file handle of low-level virtual 
+ *              file driver.
+ *
+ * Return:      Non-negative if succeed; negative otherwise.
+ *
+ * Programmer:  Raymond Lu
+ *              Sep. 16, 2002
+ *
+ * Modifications:
+ *
+ *--------------------------------------------------------------------------
+ */
+herr_t H5FDget_vfd_handle(H5FD_t *file, hid_t fapl, void** file_handle)
+{
+    herr_t              ret_value;
+
+    FUNC_ENTER_API(H5FDget_vfd_handle, FAIL);
+    
+    /* Check arguments */
+    assert(file);
+    assert(file_handle);
+    ret_value=H5FD_get_vfd_handle(file, fapl, file_handle);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*--------------------------------------------------------------------------
+ * Function:    H5FD_get_vfd_handle
+ *
+ * Purpose:     Retrieve the file handle for file driver.
+ *
+ * Return:      Non-negative if succeed; negative if fails.
+ * 
+ * Programmer:  Raymond Lu
+ *              Sep. 16, 2002
+ *
+ * Modifications:
+ *
+ *--------------------------------------------------------------------------
+ */
+herr_t H5FD_get_vfd_handle(H5FD_t *file, hid_t fapl, void** file_handle)
+{
+    herr_t ret_value = SUCCEED;
+    
+    FUNC_ENTER_NOAPI(H5FD_get_vfd_handle, FAIL);
+
+    assert(file_handle);
+    if(file->cls->get_handle && ((ret_value=file->cls->get_handle(file, fapl, file_handle)) < 0))
+        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get file handle for file driver");        
+
+done:
+    FUNC_LEAVE(ret_value);
+}    
diff --git a/src/H5FDcore.c b/src/H5FDcore.c
index f15120d..cb36223 100644
--- a/src/H5FDcore.c
+++ b/src/H5FDcore.c
@@ -66,7 +66,7 @@ typedef struct H5FD_core_fapl_t {
  * REGION_OVERFLOW:	Checks whether an address and size pair describe data
  *			which can be addressed entirely in memory.
  */
-#define MAXADDR 		((haddr_t)~(size_t)0)
+#define MAXADDR 		((haddr_t)((~(size_t)0)-1))
 #define ADDR_OVERFLOW(A)	(HADDR_UNDEF==(A) ||			      \
 				 ((A) & ~(haddr_t)MAXADDR))
 #define SIZE_OVERFLOW(Z)	((Z) & ~(hsize_t)MAXADDR)
@@ -84,6 +84,7 @@ static int H5FD_core_cmp(const H5FD_t *_f1, const H5FD_t *_f2);
 static haddr_t H5FD_core_get_eoa(H5FD_t *_file);
 static herr_t H5FD_core_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_core_get_eof(H5FD_t *_file);
+static herr_t  H5FD_core_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_core_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
 			     size_t size, void *buf);
 static herr_t H5FD_core_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -112,6 +113,7 @@ static const H5FD_class_t H5FD_core_g = {
     H5FD_core_get_eoa,				/*get_eoa		*/
     H5FD_core_set_eoa, 				/*set_eoa		*/
     H5FD_core_get_eof,				/*get_eof		*/
+    H5FD_core_get_handle,                       /*get_handle            */
     H5FD_core_read,				/*read			*/
     H5FD_core_write,				/*write			*/
     H5FD_core_flush,				/*flush			*/
@@ -189,7 +191,7 @@ H5Pset_fapl_core(hid_t fapl_id, size_t increment, hbool_t backing_store)
     H5P_genplist_t *plist;      /* Property list pointer */
     herr_t ret_value;
 
-    FUNC_ENTER_API(H5FD_set_fapl_core, FAIL);
+    FUNC_ENTER_API(H5Pset_fapl_core, FAIL);
     H5TRACE3("e","izb",fapl_id,increment,backing_store);
 
     /* Check argument */
@@ -621,6 +623,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_core_get_handle
+ * 
+ * Purpose:        Returns the file handle of CORE file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ *                 
+ * Modifications:  
+ * 
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5FD_core_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_core_t         *file = (H5FD_core_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                                                   
+    FUNC_ENTER_NOAPI(H5FD_core_get_handle, FAIL);
+
+    if(!file_handle)
+         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->mem);
+
+done:   
+    FUNC_LEAVE(ret_value);
+}   
+            
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_core_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDfamily.c b/src/H5FDfamily.c
index a71fd64..00a98db 100644
--- a/src/H5FDfamily.c
+++ b/src/H5FDfamily.c
@@ -77,6 +77,7 @@ static herr_t H5FD_family_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_family_get_eoa(H5FD_t *_file);
 static herr_t H5FD_family_set_eoa(H5FD_t *_file, haddr_t eoa);
 static haddr_t H5FD_family_get_eof(H5FD_t *_file);
+static herr_t  H5FD_family_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_family_read(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
 			       size_t size, void *_buf/*out*/);
 static herr_t H5FD_family_write(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
@@ -107,6 +108,7 @@ static const H5FD_class_t H5FD_family_g = {
     H5FD_family_get_eoa,			/*get_eoa		*/
     H5FD_family_set_eoa,			/*set_eoa		*/
     H5FD_family_get_eof,			/*get_eof		*/
+    H5FD_family_get_handle,                     /*get_handle            */
     H5FD_family_read,				/*read			*/
     H5FD_family_write,				/*write			*/
     H5FD_family_flush,				/*flush			*/
@@ -500,7 +502,7 @@ H5FD_family_open(const char *name, unsigned flags, hid_t fapl_id,
     char		memb_name[4096], temp[4096];
     hsize_t		eof;
     unsigned		t_flags = flags & ~H5F_ACC_CREAT;
-    H5P_genplist_t *plist;      /* Property list pointer */
+    H5P_genplist_t      *plist;      /* Property list pointer */
     
     FUNC_ENTER_NOAPI(H5FD_family_open, NULL);
 
@@ -893,6 +895,50 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_family_get_handle
+ * 
+ * Purpose:        Returns the file handle of FAMILY file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ *  
+ * Modifications:
+ *  
+ *-------------------------------------------------------------------------
+ */ 
+static herr_t  
+H5FD_family_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle)
+{   
+    H5FD_family_t       *file = (H5FD_family_t *)_file;
+    H5P_genplist_t      *plist;
+    hsize_t             offset;
+    int                 memb;
+    herr_t              ret_value;
+                              
+    FUNC_ENTER_NOAPI(H5FD_family_get_handle, FAIL);
+
+    /* Get the plist structure and family offset */
+    if(H5P_DEFAULT == fapl)
+        fapl = H5Pcreate(H5P_FILE_ACCESS);
+    if(NULL == (plist = H5P_object_verify(fapl, H5P_FILE_ACCESS)))
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+    if(H5P_get(plist, H5F_ACS_FAMILY_OFFSET_NAME, &offset) < 0)
+        HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get offset for family driver");
+
+    if(offset>(file->memb_size*file->nmembs))
+        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "offset is bigger than file size");
+    memb = (int)(offset/file->memb_size);
+
+    ret_value = H5FD_get_vfd_handle(file->memb[memb], fapl, file_handle);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_family_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
@@ -922,8 +968,8 @@ H5FD_family_read(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, si
     haddr_t		sub;
     size_t		req;
     hsize_t             tempreq;
-    H5P_genplist_t *plist;      /* Property list pointer */
-    herr_t      ret_value=SUCCEED;       /* Return value */
+    H5P_genplist_t      *plist;      /* Property list pointer */
+    herr_t              ret_value=SUCCEED;       /* Return value */
 
     FUNC_ENTER_NOAPI(H5FD_family_read, FAIL);
 
diff --git a/src/H5FDgass.c b/src/H5FDgass.c
index 6f761a7..1f01240 100644
--- a/src/H5FDgass.c
+++ b/src/H5FDgass.c
@@ -118,6 +118,7 @@ static herr_t H5FD_gass_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_gass_get_eoa(H5FD_t *_file);
 static herr_t H5FD_gass_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_gass_get_eof(H5FD_t *_file);
+static herr_t  H5FD_gass_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_gass_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
 			     size_t size, void *buf);
 static herr_t H5FD_gass_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -152,6 +153,7 @@ static const H5FD_class_t H5FD_gass_g = {
     H5FD_gass_get_eoa,				/*get_eoa		*/
     H5FD_gass_set_eoa, 				/*set_eoa		*/
     H5FD_gass_get_eof,				/*get_eof		*/
+    H5FD_gass_get_handle,                       /*get_handle            */
     H5FD_gass_read,				/*read			*/
     H5FD_gass_write,				/*write			*/
     NULL,				        /*flush			*/
@@ -613,6 +615,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_gass_get_handle
+ * 
+ * Purpose:        Returns the file handle of GASS file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ *                 
+ * Modifications:  
+ * 
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5FD_gass_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_gass_t         *file = (H5FD_gass_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                                                   
+    FUNC_ENTER_NOAPI(H5FD_gass_get_handle, FAIL);
+
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->fd);
+
+done:   
+    FUNC_LEAVE(ret_value);
+}   
+            
+
+/*-------------------------------------------------------------------------
  * Function:    H5FD_gass_read
  *
  * Purpose:     Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDlog.c b/src/H5FDlog.c
index 33d57c5..5e81260 100644
--- a/src/H5FDlog.c
+++ b/src/H5FDlog.c
@@ -170,6 +170,7 @@ static haddr_t H5FD_log_alloc(H5FD_t *_file, H5FD_mem_t type, hsize_t size);
 static haddr_t H5FD_log_get_eoa(H5FD_t *_file);
 static herr_t H5FD_log_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_log_get_eof(H5FD_t *_file);
+static herr_t  H5FD_log_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_log_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
 			     size_t size, void *buf);
 static herr_t H5FD_log_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -212,6 +213,7 @@ static const H5FD_class_t H5FD_log_g = {
     H5FD_log_get_eoa,				/*get_eoa		*/
     H5FD_log_set_eoa, 				/*set_eoa		*/
     H5FD_log_get_eof,				/*get_eof		*/
+    H5FD_log_get_handle,                        /*get_handle            */
     H5FD_log_read,				/*read			*/
     H5FD_log_write,				/*write			*/
     H5FD_log_flush,				/*flush			*/
@@ -965,6 +967,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_log_get_handle
+ * 
+ * Purpose:        Returns the file handle of LOG file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ *                 
+ * Modifications:  
+ * 
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5FD_log_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_log_t          *file = (H5FD_log_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                                                   
+    FUNC_ENTER_NOAPI(H5FD_log_get_handle, FAIL);
+
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->fd);
+                                                                                                                                     
+done:   
+    FUNC_LEAVE(ret_value);
+}   
+            
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_log_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c
index 25f530e..3453a3b 100644
--- a/src/H5FDmpio.c
+++ b/src/H5FDmpio.c
@@ -67,6 +67,7 @@ static herr_t H5FD_mpio_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_mpio_get_eoa(H5FD_t *_file);
 static herr_t H5FD_mpio_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_mpio_get_eof(H5FD_t *_file);
+static herr_t  H5FD_mpio_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_mpio_read(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
             size_t size, void *buf);
 static herr_t H5FD_mpio_write(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
@@ -103,6 +104,7 @@ static const H5FD_class_t H5FD_mpio_g = {
     H5FD_mpio_get_eoa,				/*get_eoa		*/
     H5FD_mpio_set_eoa, 				/*set_eoa		*/
     H5FD_mpio_get_eof,				/*get_eof		*/
+    H5FD_mpio_get_handle,                       /*get_handle            */
     H5FD_mpio_read,				/*read			*/
     H5FD_mpio_write,				/*write			*/
     H5FD_mpio_flush,				/*flush			*/
@@ -1176,6 +1178,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_mpio_get_handle
+ * 
+ * Purpose:        Returns the file handle of MPIO file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ * 
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+*/
+static herr_t  
+H5FD_mpio_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle)
+{   
+    H5FD_mpio_t         *file = (H5FD_mpio_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                            
+    FUNC_ENTER_NOAPI(H5FD_mpio_get_handle, FAIL);
+                                    
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->f);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+             
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_mpio_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDmpiposix.c b/src/H5FDmpiposix.c
index 4a37775..4b5a26c 100644
--- a/src/H5FDmpiposix.c
+++ b/src/H5FDmpiposix.c
@@ -164,6 +164,7 @@ static herr_t H5FD_mpiposix_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_mpiposix_get_eoa(H5FD_t *_file);
 static herr_t H5FD_mpiposix_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_mpiposix_get_eof(H5FD_t *_file);
+static herr_t  H5FD_mpiposix_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_mpiposix_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
         size_t size, void *buf);
 static herr_t H5FD_mpiposix_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -199,6 +200,7 @@ static const H5FD_class_t H5FD_mpiposix_g = {
     H5FD_mpiposix_get_eoa,			/*get_eoa		*/
     H5FD_mpiposix_set_eoa, 			/*set_eoa		*/
     H5FD_mpiposix_get_eof,			/*get_eof		*/
+    H5FD_mpiposix_get_handle,                   /*get_handle            */
     H5FD_mpiposix_read,				/*read			*/
     H5FD_mpiposix_write,			/*write			*/
     H5FD_mpiposix_flush,			/*flush			*/
@@ -953,6 +955,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_mpiposix_get_handle
+ * 
+ * Purpose:        Returns the file handle of MPI-POSIX file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ * 
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t  
+H5FD_mpiposix_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_mpiposix_t       *file = (H5FD_mpiposix_t *)_file;
+    herr_t                ret_value = SUCCEED;
+                             
+    FUNC_ENTER_NOAPI(H5FD_mpiposix_get_handle, FAIL);
+                                    
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->fd);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_mpiposix_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDmulti.c b/src/H5FDmulti.c
index 3d56cc9..9a9667e 100644
--- a/src/H5FDmulti.c
+++ b/src/H5FDmulti.c
@@ -122,6 +122,7 @@ static herr_t H5FD_multi_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_multi_get_eoa(H5FD_t *_file);
 static herr_t H5FD_multi_set_eoa(H5FD_t *_file, haddr_t eoa);
 static haddr_t H5FD_multi_get_eof(H5FD_t *_file);
+static herr_t  H5FD_multi_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static haddr_t H5FD_multi_alloc(H5FD_t *_file, H5FD_mem_t type, hsize_t size);
 static herr_t H5FD_multi_free(H5FD_t *_file, H5FD_mem_t type, haddr_t addr,
 			      hsize_t size);
@@ -155,6 +156,7 @@ static const H5FD_class_t H5FD_multi_g = {
     H5FD_multi_get_eoa,				/*get_eoa		*/
     H5FD_multi_set_eoa,				/*set_eoa		*/
     H5FD_multi_get_eof,				/*get_eof		*/
+    H5FD_multi_get_handle,                      /*get_handle            */
     H5FD_multi_read,				/*read			*/
     H5FD_multi_write,				/*write			*/
     H5FD_multi_flush,				/*flush			*/
@@ -1516,6 +1518,39 @@ H5FD_multi_get_eof(H5FD_t *_file)
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_multi_get_handle
+ * 
+ * Purpose:        Returns the file handle of MULTI file driver.
+ *  
+ * Returns:        Non-negative if succeed or negative if fails.
+ *  
+ * Programmer:     Raymond Lu   
+ *                 Sept. 16, 2002  
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5FD_multi_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle)
+{                
+    H5FD_multi_t        *file = (H5FD_multi_t *)_file;
+    H5FD_mem_t          type, mmt;
+    static const char   *func="H5FD_multi_get_handle";  /* Function Name for error reporting */
+
+    /* Get data type for multi driver */
+    if(H5Pget_multi_type(fapl, &type) < 0)
+        H5Epush_ret(func, H5E_INTERNAL, H5E_BADVALUE, "can't get data type for multi driver", -1);
+    if(type<H5FD_MEM_DEFAULT || type>=H5FD_MEM_NTYPES)
+        H5Epush_ret(func, H5E_INTERNAL, H5E_BADVALUE, "data type is out of range", -1);
+    mmt = file->fa.memb_map[type];
+    if(H5FD_MEM_DEFAULT==mmt) mmt = type;
+                                                                     
+    return (H5FDget_vfd_handle(file->memb[mmt], fapl, file_handle));
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_multi_alloc
  *
  * Purpose:	Allocate file memory.
diff --git a/src/H5FDmulti.h b/src/H5FDmulti.h
index 3e06c59..36f3d67 100644
--- a/src/H5FDmulti.h
+++ b/src/H5FDmulti.h
@@ -11,6 +11,8 @@
 #define H5FDmulti_H
 
 #include "H5Ipublic.h"
+#include "H5Ppublic.h"             /* Property lists */
+#include "H5Fpublic.h"
 
 #define H5FD_MULTI	(H5FD_multi_init())
 
diff --git a/src/H5FDprivate.h b/src/H5FDprivate.h
index 6e57189..187af34 100644
--- a/src/H5FDprivate.h
+++ b/src/H5FDprivate.h
@@ -40,5 +40,6 @@ H5_DLL herr_t H5FD_write(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t a
 		  const void *buf);
 H5_DLL herr_t H5FD_flush(H5FD_t *file, unsigned closing);
 H5_DLL herr_t H5FD_get_fileno(const H5FD_t *file, unsigned long *filenum);
+H5_DLL herr_t H5FD_get_vfd_handle(H5FD_t *file, hid_t fapl, void** file_handle);
 
 #endif /* !_H5FDprivate_H */
diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h
index fa4c5ad..b81eed7 100644
--- a/src/H5FDpublic.h
+++ b/src/H5FDpublic.h
@@ -145,6 +145,7 @@ typedef struct H5FD_class_t {
     haddr_t (*get_eoa)(H5FD_t *file);
     herr_t (*set_eoa)(H5FD_t *file, haddr_t addr);
     haddr_t (*get_eof)(H5FD_t *file);
+    herr_t (*get_handle)(H5FD_t *file, hid_t fapl, void**file_handle);
     herr_t (*read)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, size_t size,
 		   void *buffer);
     herr_t (*write)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, size_t size,
@@ -214,6 +215,7 @@ H5_DLL haddr_t H5FDrealloc(H5FD_t *file, H5FD_mem_t type, haddr_t addr,
 H5_DLL haddr_t H5FDget_eoa(H5FD_t *file);
 H5_DLL herr_t H5FDset_eoa(H5FD_t *file, haddr_t eof);
 H5_DLL haddr_t H5FDget_eof(H5FD_t *file);
+H5_DLL herr_t H5FDget_vfd_handle(H5FD_t *file, hid_t fapl, void**file_handle);
 H5_DLL herr_t H5FDread(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
 		void *buf/*out*/);
 H5_DLL herr_t H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
diff --git a/src/H5FDsec2.c b/src/H5FDsec2.c
index 4e2b1e2..f65bcbe 100644
--- a/src/H5FDsec2.c
+++ b/src/H5FDsec2.c
@@ -138,6 +138,7 @@ static herr_t H5FD_sec2_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_sec2_get_eoa(H5FD_t *_file);
 static herr_t H5FD_sec2_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_sec2_get_eof(H5FD_t *_file);
+static herr_t  H5FD_sec2_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_sec2_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
 			     size_t size, void *buf);
 static herr_t H5FD_sec2_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -167,6 +168,7 @@ static const H5FD_class_t H5FD_sec2_g = {
     H5FD_sec2_get_eoa,				/*get_eoa		*/
     H5FD_sec2_set_eoa, 				/*set_eoa		*/
     H5FD_sec2_get_eof,				/*get_eof		*/
+    H5FD_sec2_get_handle,                       /*get_handle            */
     H5FD_sec2_read,				/*read			*/
     H5FD_sec2_write,				/*write			*/
     H5FD_sec2_flush,				/*flush			*/
@@ -570,6 +572,37 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_sec2_get_handle
+ * 
+ * Purpose:        Returns the file handle of sec2 file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ * 
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t  
+H5FD_sec2_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_sec2_t         *file = (H5FD_sec2_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                             
+    FUNC_ENTER_NOAPI(H5FD_sec2_get_handle, FAIL);
+                           
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+    *file_handle = &(file->fd);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5FD_sec2_read
  *
  * Purpose:	Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDsrb.c b/src/H5FDsrb.c
index 4dde148..bd44382 100644
--- a/src/H5FDsrb.c
+++ b/src/H5FDsrb.c
@@ -85,6 +85,7 @@ static herr_t H5FD_srb_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_srb_get_eoa(H5FD_t *_file);
 static herr_t  H5FD_srb_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_srb_get_eof(H5FD_t *_file);
+static herr_t  H5FD_srb_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t  H5FD_srb_read(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
 			     size_t size, void *buf);
 static herr_t  H5FD_srb_write(H5FD_t *_file, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -131,6 +132,7 @@ static const H5FD_class_t H5FD_srb_g = {
     H5FD_srb_get_eoa,           		/*get_eoa		*/
     H5FD_srb_set_eoa, 		                /*set_eoa		*/
     H5FD_srb_get_eof,				/*get_eof		*/
+    H5FD_srb_get_handle,                        /*get_handle            */
     H5FD_srb_read,				/*read			*/
     H5FD_srb_write,				/*write			*/
     H5FD_srb_flush,				/*flush			*/
@@ -577,6 +579,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_srb_get_handle
+ * 
+ * Purpose:        Returns the file handle of SRB file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ * 
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t  
+H5FD_srb_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{   
+    H5FD_srb_t          *file = (H5FD_srb_t *)_file;
+    herr_t              ret_value = SUCCEED;
+                            
+    FUNC_ENTER_NOAPI(H5FD_srb_get_eof, FAIL);
+
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->fd);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5FD_srb_read
  *
  * Purpose:     Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5FDstdio.c b/src/H5FDstdio.c
index 2ae8398..a94812e 100644
--- a/src/H5FDstdio.c
+++ b/src/H5FDstdio.c
@@ -137,6 +137,7 @@ static herr_t H5FD_stdio_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_stdio_get_eoa(H5FD_t *_file);
 static herr_t H5FD_stdio_set_eoa(H5FD_t *_file, haddr_t addr);
 static haddr_t H5FD_stdio_get_eof(H5FD_t *_file);
+static herr_t  H5FD_stdio_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t H5FD_stdio_read(H5FD_t *lf, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
                 size_t size, void *buf);
 static herr_t H5FD_stdio_write(H5FD_t *lf, H5FD_mem_t type, hid_t fapl_id, haddr_t addr,
@@ -166,6 +167,7 @@ static const H5FD_class_t H5FD_stdio_g = {
     H5FD_stdio_get_eoa,		                /*get_eoa		*/
     H5FD_stdio_set_eoa, 	                /*set_eoa		*/
     H5FD_stdio_get_eof,		                /*get_eof		*/
+    H5FD_stdio_get_handle,                      /*get_handle            */
     H5FD_stdio_read,		                /*read			*/
     H5FD_stdio_write,		                /*write			*/
     H5FD_stdio_flush,		                /*flush			*/
@@ -576,6 +578,36 @@ H5FD_stdio_get_eof(H5FD_t *_file)
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_stdio_get_handle
+ * 
+ * Purpose:        Returns the file handle of stdio file driver.
+ * 
+ * Returns:        Non-negative if succeed or negative if fails.
+ * 
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ * 
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t  
+H5FD_stdio_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle)
+{   
+    H5FD_stdio_t       *file = (H5FD_stdio_t *)_file;
+    static const char  *func="H5FD_stdio_get_handle";  /* Function Name for error reporting */
+   
+    /* Clear the error stack */
+    H5Eclear();
+             
+    *file_handle = &(file->fp);
+    if(*file_handle==NULL)
+        H5Epush_ret(func, H5E_IO, H5E_WRITEERROR, "get handle failed", -1);
+    return(0); 
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5F_stdio_read
  *
  * Purpose:	Reads SIZE bytes beginning at address ADDR in file LF and
diff --git a/src/H5FDstream.c b/src/H5FDstream.c
index 2883d13..ee3ca99 100644
--- a/src/H5FDstream.c
+++ b/src/H5FDstream.c
@@ -159,6 +159,7 @@ static herr_t H5FD_stream_query(const H5FD_t *_f1, unsigned long *flags);
 static haddr_t H5FD_stream_get_eoa (H5FD_t *_stream);
 static herr_t  H5FD_stream_set_eoa (H5FD_t *_stream, haddr_t addr);
 static haddr_t H5FD_stream_get_eof (H5FD_t *_stream);
+static herr_t  H5FD_stream_get_handle(H5FD_t *_file, hid_t fapl, void** file_handle);
 static herr_t  H5FD_stream_read (H5FD_t *_stream, H5FD_mem_t type,
                                  hid_t fapl_id, haddr_t addr,
                                  size_t size, void *buf);
@@ -191,6 +192,7 @@ static const H5FD_class_t H5FD_stream_g =
   H5FD_stream_get_eoa,              /* get_eoa                             */
   H5FD_stream_set_eoa,              /* set_eoa                             */
   H5FD_stream_get_eof,              /* get_eof                             */
+  H5FD_stream_get_handle,           /* get_handle                          */
   H5FD_stream_read,                 /* read                                */
   H5FD_stream_write,                /* write                               */
   H5FD_stream_flush,                /* flush                               */
@@ -929,6 +931,38 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:       H5FD_stream_get_handle
+ *
+ * Purpose:        Returns the file handle of stream file driver.
+ *
+ * Returns:        Non-negative if succeed or negative if fails.
+ *
+ * Programmer:     Raymond Lu
+ *                 Sept. 16, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t  
+H5FD_stream_get_handle(H5FD_t *_file, hid_t UNUSED fapl, void** file_handle)
+{
+    H5FD_stream_t       *file = (H5FD_stream_t *)_file;
+    herr_t              ret_value = SUCCEED;
+
+    FUNC_ENTER_NOAPI(H5FD_stream_get_handle, FAIL);
+
+    if(!file_handle)
+        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "file handle not valid");
+
+    *file_handle = &(file->socket);
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:      H5FD_stream_read
  *
  * Purpose:       Reads SIZE bytes of data from FILE beginning at address ADDR
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 32c9759..3f5de41 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -320,6 +320,16 @@ H5_DLL size_t H5F_sizeof_size(const H5F_t *f);
 #define H5F_CLOSE_DEGREE_SIZE		        sizeof(H5F_close_degree_t)
 #define H5F_CLOSE_DEGREE_DEF		        H5F_CLOSE_DEFAULT
 
+/* Definition for offset position in file for family file driver */
+#define H5F_ACS_FAMILY_OFFSET_NAME              "family_offset"
+#define H5F_ACS_FAMILY_OFFSET_SIZE              sizeof(hsize_t)
+#define H5F_ACS_FAMILY_OFFSET_DEF               0
+
+/* Definition for data type in multi file driver */
+#define H5F_ACS_MULTI_TYPE_NAME                 "multi_type"
+#define H5F_ACS_MULTI_TYPE_SIZE                 sizeof(H5FD_mem_t)
+#define H5F_ACS_MULTI_TYPE_DEF                  H5FD_MEM_DEFAULT
+
 /* ======================== File Mount properties ====================*/
 /* Definition for whether absolute symlinks local to file. */
 #define H5F_MNT_SYM_LOCAL_NAME 		"local"
@@ -343,6 +353,7 @@ H5_DLL herr_t H5F_get_fileno(const H5F_t *f, unsigned long *filenum);
 H5_DLL herr_t H5F_get_obj_count(H5F_t *f, unsigned types,
                                  unsigned *obj_id_count);
 H5_DLL herr_t H5F_get_obj_ids(H5F_t *f, unsigned types, hid_t *obj_id_list);
+H5_DLL herr_t H5F_get_vfd_handle(H5F_t *file, hid_t fapl, void** file_handle);
 
 /* Functions that operate on array storage */
 H5_DLL herr_t H5F_arr_read (H5F_t *f, hid_t dxpl_id,
diff --git a/src/H5Fpublic.h b/src/H5Fpublic.h
index fc23620..adddd83 100644
--- a/src/H5Fpublic.h
+++ b/src/H5Fpublic.h
@@ -94,6 +94,7 @@ H5_DLL hid_t  H5Fget_create_plist (hid_t file_id);
 H5_DLL hid_t  H5Fget_access_plist (hid_t file_id);
 H5_DLL herr_t H5Fget_obj_count(hid_t file_id, unsigned types, 
                                 unsigned *obj_id_count);
+H5_DLL herr_t H5Fget_vfd_handle(hid_t file_id, hid_t fapl, void** file_handle);
 H5_DLL herr_t H5Fget_obj_ids(hid_t file_id, unsigned types, hid_t *obj_id_list);
 H5_DLL herr_t H5Fmount(hid_t loc, const char *name, hid_t child, hid_t plist);
 H5_DLL herr_t H5Funmount(hid_t loc, const char *name);
diff --git a/src/H5Pfapl.c b/src/H5Pfapl.c
index c58711e..2e32e0a 100644
--- a/src/H5Pfapl.c
+++ b/src/H5Pfapl.c
@@ -498,9 +498,305 @@ done:
     FUNC_LEAVE(ret_value);
 } /* end H5Pget_driver_info() */
 
-#ifdef H5_WANT_H5_V1_4_COMPAT
 
 /*-------------------------------------------------------------------------
+ * Function:    H5Pset_family_offset
+ * 
+ * Purpose:     Set offset for family driver.  This file access property
+ *              list will be passed to H5Fget_vfd_handle or H5FDget_vfd_handle
+ *              to retrieve VFD file handle.
+ *              
+ * Return:      Success:        Non-negative value. 
+ *                              
+ *              Failure:        Negative value. 
+ *                              
+ * Programmer:  Raymond Lu     
+ *              Sep 17, 2002 
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+*/
+herr_t H5Pset_family_offset(hid_t fapl_id, hsize_t offset)
+{
+    H5P_genplist_t      *plist;                 /* Property list pointer */
+    herr_t              ret_value=SUCCEED;      /* return value */
+
+    FUNC_ENTER_API(H5Pset_family_offset, FAIL);
+
+    /* Get the plist structure */
+    if(H5P_DEFAULT == fapl_id)
+         fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+    if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
+         HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+    /* Set values */
+    if((ret_value=H5P_set_family_offset(plist, offset)) < 0)
+         HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set family offset");
+                    
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5P_set_family_offset
+ * 
+ * Purpose:     Set offset for family driver.  Private function for 
+ *              H5Pset_family_offset
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                          
+ * Programmer:  Raymond Lu  
+ *              Sep 17, 2002
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5P_set_family_offset(H5P_genplist_t *plist, hsize_t offset)
+{
+    herr_t      ret_value=SUCCEED;
+
+    FUNC_ENTER_NOAPI(H5P_set_family_offset, FAIL);
+
+    if( TRUE == H5P_isa_class(plist->plist_id, H5P_FILE_ACCESS) ) {
+         if(H5P_set(plist, H5F_ACS_FAMILY_OFFSET_NAME, &offset) < 0)
+              HGOTO_ERROR(H5E_PLIST, H5E_CANTSET,FAIL,"can't set offset for family file");
+    } else {
+         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access or data transfer property list");
+    }
+
+done:
+    FUNC_LEAVE(ret_value);
+}
+ 
+
+/*-------------------------------------------------------------------------
+ * Function:    H5Pget_family_offset
+ * 
+ * Purpose:     Get offset for family driver.  This file access property
+ *              list will be passed to H5Fget_vfd_handle or H5FDget_vfd_handle
+ *              to retrieve VFD file handle.
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                              
+ * Programmer:  Raymond Lu      
+ *              Sep 17, 2002    
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5Pget_family_offset(hid_t fapl_id, hsize_t *offset)
+{
+    H5P_genplist_t      *plist;                 /* Property list pointer */
+    herr_t              ret_value=SUCCEED;      /* return value */
+                               
+    FUNC_ENTER_API(H5Pget_family_offset, FAIL);
+                                            
+    /* Get the plist structure */
+    if(H5P_DEFAULT == fapl_id)
+         fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+    if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
+         HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+    /* Set values */
+    if((ret_value=H5P_get_family_offset(plist, offset)) < 0)
+         HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't get family offset");
+                                                                                                          
+done:               
+    FUNC_LEAVE(ret_value);
+}   
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5P_get_family_offset
+ * 
+ * Purpose:     Get offset for family driver.  Private function for
+ *              H5Pget_family_offset
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                              
+ * Programmer:  Raymond Lu      
+ *              Sep 17, 2002    
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5P_get_family_offset(H5P_genplist_t *plist, hsize_t *offset)
+{
+    herr_t      ret_value=SUCCEED;
+                            
+    FUNC_ENTER_NOAPI(H5P_get_family_offset, FAIL);
+                                    
+    if( TRUE == H5P_isa_class(plist->plist_id, H5P_FILE_ACCESS) ) {
+        if(H5P_get(plist, H5F_ACS_FAMILY_OFFSET_NAME, offset) < 0)
+             HGOTO_ERROR(H5E_PLIST, H5E_CANTSET,FAIL,"can't set offset for family file");
+    } else {  
+        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access or data transfer property list");
+    }    
+                                                                                               
+done:
+    FUNC_LEAVE(ret_value);
+}   
+                
+
+/*-------------------------------------------------------------------------
+ * Function:    H5Pset_multi_type
+ * 
+ * Purpose:     Set data type for multi driver.  This file access property
+ *              list will be passed to H5Fget_vfd_handle or H5FDget_vfd_handle
+ *              to retrieve VFD file handle.
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                          
+ * Programmer:  Raymond Lu  
+ *              Sep 17, 2002
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5Pset_multi_type(hid_t fapl_id, H5FD_mem_t type)
+{
+    H5P_genplist_t      *plist;                 /* Property list pointer */
+    herr_t              ret_value=SUCCEED;      /* return value */
+
+    FUNC_ENTER_API(H5Pset_multi_type, FAIL);
+
+    /* Get the plist structure */
+    if(H5P_DEFAULT == fapl_id)
+         fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+    if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
+         HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+    /* Set values */
+    if((ret_value=H5P_set_multi_type(plist, type)) < 0)
+         HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set data type for multi driver");
+                                                  
+done:
+    FUNC_LEAVE(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5P_set_multi_type
+ *  
+ * Purpose:     Set data type for multi file driver.  Private function for
+ *              H5Pset_multi_type.
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                              
+ * Programmer:  Raymond Lu              
+ *              Sep 17, 2002
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5P_set_multi_type(H5P_genplist_t *plist, H5FD_mem_t type)
+{
+    herr_t      ret_value=SUCCEED;
+
+    FUNC_ENTER_NOAPI(H5P_set_multi_type, FAIL);
+
+    if( TRUE == H5P_isa_class(plist->plist_id, H5P_FILE_ACCESS) ) {
+         if(H5P_set(plist, H5F_ACS_MULTI_TYPE_NAME, &type) < 0)
+                HGOTO_ERROR(H5E_PLIST, H5E_CANTSET,FAIL,"can't set type for multi driver");
+    } else {
+         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access or data transfer property list");
+    }
+
+done:
+    FUNC_LEAVE(ret_value);
+}               
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5Pget_multi_type
+ * 
+ * Purpose:     Get data type for multi driver.  This file access property
+ *              list will be passed to H5Fget_vfd_handle or H5FDget_vfd_handle
+ *              to retrieve VFD file handle.
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                              
+ * Programmer:  Raymond Lu      
+ *              Sep 17, 2002    
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5Pget_multi_type(hid_t fapl_id, H5FD_mem_t *type)
+{
+    H5P_genplist_t      *plist;                 /* Property list pointer */
+    herr_t              ret_value=SUCCEED;      /* return value */
+                                
+    FUNC_ENTER_API(H5Pget_multi_type, FAIL);
+                                        
+    /* Get the plist structure */
+    if(H5P_DEFAULT == fapl_id)
+         fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+    if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
+         HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+    /* Set values */
+    if((ret_value=H5P_get_multi_type(plist, type)) < 0)
+         HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't get data type for multi driver");
+                                                                                                                                     
+done:                                              
+    FUNC_LEAVE(ret_value);                         
+}   
+
+
+/*-------------------------------------------------------------------------
+ * Function:    H5P_get_multi_type
+ *  
+ * Purpose:     Get data type for multi file driver.  Private function for
+ *              H5Pget_multi_type.
+ *              
+ * Return:      Success:        Non-negative value.
+ *                              
+ *              Failure:        Negative value.
+ *                              
+ * Programmer:  Raymond Lu      
+ *              Sep 17, 2002    
+ *              
+ * Modifications:
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t H5P_get_multi_type(H5P_genplist_t *plist, H5FD_mem_t *type)
+{
+    herr_t      ret_value=SUCCEED;
+                           
+    FUNC_ENTER_NOAPI(H5P_get_multi_type, FAIL);
+                                    
+    if( TRUE == H5P_isa_class(plist->plist_id, H5P_FILE_ACCESS) ) {
+         if(H5P_get(plist, H5F_ACS_MULTI_TYPE_NAME, type) < 0) 
+             HGOTO_ERROR(H5E_PLIST, H5E_CANTSET,FAIL,"can't get type for multi driver");    
+    } else {    
+         HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list");    
+    }    
+                                                                                          
+done:
+    FUNC_LEAVE(ret_value);
+}               
+
+
+#ifdef H5_WANT_H5_V1_4_COMPAT
+/*-------------------------------------------------------------------------
  * Function:	H5Pset_cache
  *
  * Purpose:	Set the number of objects in the meta data cache and the
diff --git a/src/H5Pprivate.h b/src/H5Pprivate.h
index 03ab355..156943c 100644
--- a/src/H5Pprivate.h
+++ b/src/H5Pprivate.h
@@ -49,6 +49,10 @@ H5_DLL hid_t H5P_get_driver(H5P_genplist_t *plist);
 H5_DLL void * H5P_get_driver_info(H5P_genplist_t *plist);
 H5_DLL herr_t H5P_set_driver(H5P_genplist_t *plist, hid_t new_driver_id,
             const void *new_driver_info);
+H5_DLL herr_t H5P_set_family_offset(H5P_genplist_t *plist, hsize_t offset);
+H5_DLL herr_t H5P_get_family_offset(H5P_genplist_t *plist, hsize_t *offset);
+H5_DLL herr_t H5P_set_multi_type(H5P_genplist_t *plist, H5FD_mem_t type);
+H5_DLL herr_t H5P_get_multi_type(H5P_genplist_t *plist, H5FD_mem_t *type);
 H5_DLL herr_t H5P_set_vlen_mem_manager(H5P_genplist_t *plist,
         H5MM_allocate_t alloc_func, void *alloc_info, H5MM_free_t free_func,
         void *free_info);
diff --git a/src/H5Ppublic.h b/src/H5Ppublic.h
index f09356d..07cbec2 100644
--- a/src/H5Ppublic.h
+++ b/src/H5Ppublic.h
@@ -25,6 +25,7 @@
 #include "H5Ipublic.h"
 #include "H5Dpublic.h"
 #include "H5Fpublic.h"
+#include "H5FDpublic.h"
 #include "H5MMpublic.h"
 #include "H5Zpublic.h"
 
@@ -179,6 +180,10 @@ H5_DLL herr_t H5Pset_driver(hid_t plist_id, hid_t driver_id,
         const void *driver_info);
 H5_DLL hid_t H5Pget_driver(hid_t plist_id);
 H5_DLL void *H5Pget_driver_info(hid_t plist_id);
+H5_DLL herr_t H5Pset_family_offset(hid_t fapl_id, hsize_t offset);
+H5_DLL herr_t H5Pget_family_offset(hid_t fapl_id, hsize_t *offset);
+H5_DLL herr_t H5Pset_multi_type(hid_t fapl_id, H5FD_mem_t type);
+H5_DLL herr_t H5Pget_multi_type(hid_t fapl_id, H5FD_mem_t *type);
 #ifdef H5_WANT_H5_V1_4_COMPAT
 H5_DLL herr_t H5Pset_buffer(hid_t plist_id, hsize_t size, void *tconv,
         void *bkg);