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authorAlbert Cheng <acheng@hdfgroup.org>2005-03-03 18:10:16 (GMT)
committerAlbert Cheng <acheng@hdfgroup.org>2005-03-03 18:10:16 (GMT)
commitf5c24bc9a46b989892e946bb6f440a88bb2f06af (patch)
tree44b67b7ceb4fa0e5bbebe867630332d1ddec25e9 /src/H5FDgass.c
parent85917a734134ce356e9f701b71bcd88617967a76 (diff)
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[svn-r10130] Purpose:
Retired GASS driver. Platforms tested: H5committested.
Diffstat (limited to 'src/H5FDgass.c')
-rw-r--r--src/H5FDgass.c867
1 files changed, 0 insertions, 867 deletions
diff --git a/src/H5FDgass.c b/src/H5FDgass.c
deleted file mode 100644
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--- a/src/H5FDgass.c
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@@ -1,867 +0,0 @@
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * Copyright by the Board of Trustees of the University of Illinois. *
- * All rights reserved. *
- * *
- * This file is part of HDF5. The full HDF5 copyright notice, including *
- * terms governing use, modification, and redistribution, is contained in *
- * the files COPYING and Copyright.html. COPYING can be found at the root *
- * of the source code distribution tree; Copyright.html can be found at the *
- * root level of an installed copy of the electronic HDF5 document set and *
- * is linked from the top-level documents page. It can also be found at *
- * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
- * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-/*
- * Programmer: Saurabh Bagchi (bagchi@uiuc.edu)
- * Thursday, August 12 -Tuesday, August 17, 1999
- *
- * Purpose: This is the GASS I/O driver.
- *
- */
-
-/* Interface initialization */
-#define H5_INTERFACE_INIT_FUNC H5FD_gass_init_interface
-
-
-#include "H5private.h" /* Generic Functions */
-#include "H5Eprivate.h" /* Error handling */
-#include "H5Fprivate.h" /* Files access */
-#include "H5FDprivate.h" /* File drivers */
-#include "H5FDgass.h" /* GASS file driver */
-#include "H5Iprivate.h" /* IDs */
-#include "H5MMprivate.h" /* Memory management */
-#include "H5Pprivate.h" /* Property lists */
-
-#ifdef H5_HAVE_GASS
-
-/* The driver identification number, initialized at runtime */
-static hid_t H5FD_GASS_g = 0;
-
-/* File operations */
-#define OP_UNKNOWN 0
-#define OP_READ 1
-#define OP_WRITE 2
-
-/*
- * The description of a file belonging to this driver. The `eoa' and `eof'
- * determine the amount of hdf5 address space in use and the high-water mark
- * of the file (the current size of the underlying Unix file). The `pos'
- * value is used to eliminate file position updates when they would be a
- * no-op. Unfortunately we've found systems that use separate file position
- * indicators for reading and writing so the lseek can only be eliminated if
- * the current operation is the same as the previous operation. When opening
- * a file the `eof' will be set to the current file size, `eoa' will be set
- * to zero, `pos' will be set to H5F_ADDR_UNDEF (as it is when an error
- * occurs), and `op' will be set to H5F_OP_UNKNOWN.
- */
-typedef struct H5FD_gass_t {
- H5FD_t pub; /*public stuff, must be first */
- int fd; /*the unix file */
- GASS_Info info; /*file information */
- haddr_t eoa; /*end of allocated region */
- haddr_t eof; /*end of file; current file size*/
- haddr_t pos; /*current file I/O position */
- int op; /*last operation */
-
-
-} H5FD_gass_t;
-
-/*
- * This driver supports systems that have the lseek64() function by defining
- * some macros here so we don't have to have conditional compilations later
- * throughout the code.
- *
- * file_offset_t: The datatype for file offsets, the second argument of
- * the lseek() or lseek64() call.
- *
- * file_seek: The function which adjusts the current file position,
- * either lseek() or lseek64().
- */
-/* adding for windows NT file system support. */
-
-#ifdef H5_HAVE_LSEEK64
-# define file_offset_t off64_t
-# define file_seek lseek64
-#elif defined (WIN32)
-# ifdef __MWERKS__
-# define file_offset_t off_t
-# define file_seek lseek
-# else /*MSVC*/
-# define file_offset_t __int64
-# define file_seek _lseeki64
-# endif
-#else
-# define file_offset_t off_t
-# define file_seek lseek
-#endif
-
-
-
-/*
- * These macros check for overflow of various quantities. These macros
- * assume that file_offset_t is signed and haddr_t and size_t are unsigned.
- *
- * ADDR_OVERFLOW: Checks whether a file address of type `haddr_t'
- * is too large to be represented by the second argument
- * of the file seek function.
- *
- * SIZE_OVERFLOW: Checks whether a buffer size of type `hsize_t' is too
- * large to be represented by the `size_t' type.
- *
- * REGION_OVERFLOW: Checks whether an address and size pair describe data
- * which can be addressed entirely by the second
- * argument of the file seek function.
- */
-#define MAXADDR (((haddr_t)1<<(8*sizeof(file_offset_t)-1))-1)
-#define ADDR_OVERFLOW(A) (HADDR_UNDEF==(A) || \
- ((A) & ~(haddr_t)MAXADDR))
-#define SIZE_OVERFLOW(Z) ((Z) & ~(hsize_t)MAXADDR)
-#define REGION_OVERFLOW(A,Z) (ADDR_OVERFLOW(A) || SIZE_OVERFLOW(Z) || \
- sizeof(file_offset_t)<sizeof(size_t) || \
- HADDR_UNDEF==(A)+(Z) || \
- (file_offset_t)((A)+(Z))<(file_offset_t)(A))
-
-/* Prototypes */
-static H5FD_t *H5FD_gass_open(const char *name, unsigned flags, hid_t fapl_id,
- haddr_t maxaddr);
-static herr_t H5FD_gass_close(H5FD_t *_file);
-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,
- size_t size, const void *buf);
-
-/* GASS I/O-specific file access properties */
-typedef struct H5FD_gass_fapl_t {
- GASS_Info info; /* access property parameters */
-} H5FD_gass_fapl_t;
-
-/* The GASS IO driver information */
-static const H5FD_class_t H5FD_gass_g = {
- "gass", /*name */
- MAXADDR, /*maxaddr */
- H5F_CLOSE_WEAK, /* fc_degree */
- NULL, /*sb_size */
- NULL, /*sb_encode */
- NULL, /*sb_decode */
- sizeof(H5FD_gass_fapl_t), /*fapl_size */
- NULL, /*fapl_get */
- NULL, /*fapl_copy */
- NULL, /*fapl_free */
- 0, /*dxpl_size */
- NULL, /*dxpl_copy */
- NULL, /*dxpl_free */
- H5FD_gass_open, /*open */
- H5FD_gass_close, /*close */
- NULL, /*cmp */
- H5FD_gass_query, /*query */
- NULL, /*alloc */
- NULL, /*free */
- 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 */
- NULL, /*lock */
- NULL, /*unlock */
- H5FD_FLMAP_SINGLE /*fl_map */
-};
-
-
-/*--------------------------------------------------------------------------
-NAME
- H5FD_gass_init_interface -- Initialize interface-specific information
-USAGE
- herr_t H5FD_gass_init_interface()
-
-RETURNS
- Non-negative on success/Negative on failure
-DESCRIPTION
- Initializes any interface-specific data or routines. (Just calls
- H5FD_gass_init currently).
-
---------------------------------------------------------------------------*/
-static herr_t
-H5FD_gass_init_interface(void)
-{
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_gass_init_interface)
-
- FUNC_LEAVE_NOAPI(H5FD_gass_init())
-} /* H5FD_gass_init_interface() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_init
- *
- * Purpose: Initialize this driver by registering the driver with the
- * library.
- *
- * Return: Success: The driver ID for the gass driver.
- *
- * Failure: Negative.
- *
- * Programmer: Saurabh Bagchi
- * Friday, August 13, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-hid_t
-H5FD_gass_init(void)
-{
- hid_t ret_value=H5FD_GASS_g; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_init, FAIL)
-
- if (!H5FD_GASS_g)
- H5FD_GASS_g = H5FD_register(&H5FD_gass_g,sizeof(H5FD_class_t));
-
- globus_module_activate (GLOBUS_COMMON_MODULE);
- globus_module_activate (GLOBUS_GASS_FILE_MODULE);
-
- /* Set return value */
- ret_value=H5FD_GASS_g;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*---------------------------------------------------------------------------
- * Function: H5FD_gass_term
- *
- * Purpose: Shut down the VFD
- *
- * Return: <none>
- *
- * Programmer: Quincey Koziol
- * Friday, Jan 30, 2004
- *
- * Modification:
- *
- *---------------------------------------------------------------------------
- */
-void
-H5FD_gass_term(void)
-{
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5FD_gass_term)
-
- /* Reset VFL ID */
- H5FD_GASS_g=0;
-
- FUNC_LEAVE_NOAPI_VOID
-} /* end H5FD_gass_term() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5Pset_fapl_gass
- *
- * Purpose: Store the user supplied GASS INFO in
- * the file access property list FAPL_ID which can then be used
- * to create and/or open the file.
- *
- * GASS info object to be used for file open using GASS.
- * Any modification to info after
- * this function call returns may have undetermined effect
- * to the access property list. Users should call this
- * function again to setup the property list.
- *
- *
- * Return: Success: Non-negative
- *
- * Failure: Negative
- *
- * Programmer: Saurabh Bagchi
- * Friday, August 13, 1999
- *
- * Modifications:
- *
- * Raymond Lu, 2001-10-25
- * Changed the file access list to the new generic property list.
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5Pset_fapl_gass(hid_t fapl_id, GASS_Info info)
-{
- H5FD_gass_fapl_t fa;
- H5P_genplist_t *plist; /* Property list pointer */
- herr_t ret_value;
-
- FUNC_ENTER_API(H5Pset_fapl_gass, FAIL)
- /*NO TRACE*/
-
- /* Check arguments */
- if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list")
-
-#ifdef LATER
-#warning "We need to verify that INFO contain sensible information."
-#endif
-
- /* Initialize driver specific properties */
- fa.info = info;
-
- ret_value= H5P_set_driver(plist, H5FD_GASS, &fa);
-
-done:
- FUNC_LEAVE_API(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5Pget_fapl_gass
- *
- * Purpose: If the file access property list is set to the H5FD_GASS
- * driver then this function returns the GASS info object
- * through the INFO pointer.
- *
- * Return: Success: Non-negative with the info object returned
- * through the INFO arguments if non-null.
- * The information is copied and it is therefore
- * valid only until the file access property
- * list is modified or closed.
- *
- * Failure: Negative
- *
- * Programmer: Saurabh Bagchi
- * Friday, August 13, 1999
- *
- * Modifications:
- *
- * Raymond Lu, 2001-10-25
- * Changed the file access list to the new generic property list.
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5Pget_fapl_gass(hid_t fapl_id, GASS_Info *info/*out*/)
-{
- H5FD_gass_fapl_t *fa;
- H5P_genplist_t *plist; /* Property list pointer */
- herr_t ret_value=SUCCEED; /* Return value */
-
- FUNC_ENTER_API(H5Pget_fapl_gass, FAIL)
- H5TRACE2("e","ix",fapl_id,info);
-
- if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list")
- if (H5FD_GASS!=H5P_get_driver(plist))
- HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "incorrect VFL driver")
- if (NULL==(fa=H5P_get_driver_info(plist)))
- HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "bad VFL driver info")
-
- if (info)
- *info = fa->info;
-
-done:
- FUNC_LEAVE_API(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_open
- *
- * Purpose: Opens a file with name NAME. The FLAGS are a bit field with
- * purpose similar to the second argument of open(2) and which
- * are defined in H5Fpublic.h. The file access property list
- * FAPL_ID contains the driver properties and MAXADDR
- * is the largest address which this file will be expected to
- * access.
- *
- * Return: Success: A pointer to a new file data structure. The
- * public fields will be initialized by the
- * caller, which is always H5FD_open().
- *
- * Failure: NULL
- *
- * Programmer: Saurabh Bagchi
- * Friday, August 13, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static H5FD_t *
-H5FD_gass_open(const char *name, unsigned flags, hid_t fapl_id,
- haddr_t maxaddr)
-{
- int fd;
- H5FD_gass_t *file=NULL;
- const H5FD_gass_fapl_t *fa=NULL;
- H5FD_gass_fapl_t _fa;
- char *filename = (char *) H5MM_malloc(80 * sizeof(char));
- H5P_genplist_t *plist; /* Property list pointer */
- h5_stat_t sb;
- H5FD_t *ret_value;
-
- FUNC_ENTER_NOAPI(H5FD_gass_open, NULL)
-
- /* fprintf(stdout, "Entering H5FD_gass_open name=%s flags=0x%x\n", name, flags); */
-
- /* Check arguments */
- if (!name || !*name)
- HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "invalid file name")
- if (0==maxaddr || HADDR_UNDEF==maxaddr)
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL, "bogus maxaddr")
- if (ADDR_OVERFLOW(maxaddr))
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, NULL, "bogus maxaddr")
-
- strcpy (filename, name);
-
- /* Obtain a pointer to gass-specific file access properties */
- if(NULL == (plist = H5P_object_verify(fapl_id,H5P_FILE_ACCESS)))
- HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a file access property list")
- if (H5P_FILE_ACCESS_DEFAULT==fapl_id || H5FD_GASS!=H5P_get_driver(plist)) {
- GASS_INFO_NULL (_fa.info);
- /* _fa.info = GASS_INFO_NULL; */
- /* _fa.info = {0,0}; */ /*default*/
- fa = &_fa;
- } else {
- fa = H5P_get_driver_info(plist);
- assert(fa);
- }
-
- /* When I come down here, the possible flag values and the correct
- responses are given here :-
-
- 1. H5F_ACC_CREAT | H5F_ACC_RDWR | H5F_ACC_EXCL : The file is
- a new one. Go ahead and open it in O_RDWR.
-
- 2. H5F_ACC_CREAT | H5F_ACC_RDWR | H5F_ACC_TRUNC : Use
- O_RDWR | O_TRUNC with gass_open.
-
- 3. H5F_ACC_RDWR | H5F_ACC_TRUNC : File already exists. Truncate it.
-
- 4. H5F_ACC_RDWR : Use O_RDWR with gass_open
-
- 5. H5F_ACC_RDWR is not set : Use O_RDONLY with gass_open
-
- One reason why we cannot simply pass on the flags to gass_open
- is that gass_open does not support many of them (e.g., O_CREAT)
- */
-
-
- if ((flags & H5F_ACC_CREAT) && (flags & H5F_ACC_RDWR) && (flags & H5F_ACC_EXCL)) {
- if ((fd = globus_gass_open (filename, O_RDWR|O_TRUNC)) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTOPENFILE, NULL, "open failed")
- }
- else if ((flags & H5F_ACC_CREAT) && (flags & H5F_ACC_RDWR) && (flags & H5F_ACC_TRUNC)) {
- if ((fd = globus_gass_open (filename, O_RDWR|O_TRUNC)) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTOPENFILE, NULL, "open failed")
-
- }
- else if ((flags & H5F_ACC_RDWR) && (flags & H5F_ACC_TRUNC)) {
- if ((fd = globus_gass_open (filename, O_RDWR|O_TRUNC)) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTOPENFILE, NULL, "open failed")
-
- }
- else if (flags & H5F_ACC_RDWR) {
- if ((fd = globus_gass_open (filename, O_RDWR)) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTOPENFILE, NULL, "open failed")
-
- }
- else { /* This is case where H5F_ACC_RDWR is not set */
- if ((fd = globus_gass_open (filename, O_RDONLY)) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTOPENFILE, NULL, "open failed")
-
- }
-
- if (HDfstat(fd, &sb)<0) {
- close(fd);
- HGOTO_ERROR(H5E_IO, H5E_BADFILE, NULL, "fstat failed")
- }
-
- /* Create the new file struct */
- if (NULL==(file=H5MM_calloc(sizeof(H5FD_gass_t))))
- HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate file struct")
- file->fd = fd;
- file->eof = sb.st_size;
- file->pos = HADDR_UNDEF;
- file->op = OP_UNKNOWN;
- file->info = fa->info;
-
- /* Set return value */
- ret_value=(H5FD_t*)file;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_close
- *
- * Purpose: Closes a GASS file.
- *
- * Return: Success: 0
- *
- * Failure: -1, file not closed.
- *
- * Programmer: Saurabh Bagchi
- * Monday, August 16, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5FD_gass_close (H5FD_t *_file)
-{
- H5FD_gass_t *file = (H5FD_gass_t *)_file;
- herr_t ret_value=SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_close, FAIL)
-
- if (file == NULL)
- HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid file handle")
-
- if (globus_gass_close (file->fd) < 0)
- HGOTO_ERROR(H5E_IO, H5E_CANTCLOSEFILE, FAIL, "can't close GASS file")
-
- H5MM_xfree(file);
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_query
- *
- * Purpose: Set the flags that this VFL driver is capable of supporting.
- * (listed in H5FDpublic.h)
- *
- * Return: Success: non-negative
- *
- * Failure: negative
- *
- * Programmer: Quincey Koziol
- * Tuesday, September 26, 2000
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5FD_gass_query(const UNUSED H5FD_t *_f, unsigned long *flags /* out */)
-{
- herr_t ret_value=SUCCEED;
-
- FUNC_ENTER_NOAPI(H5FD_gass_query, FAIL)
-
- /* Set the VFL feature flags that this driver supports */
- if(flags) {
- *flags = 0;
- *flags|=H5FD_FEAT_DATA_SIEVE; /* OK to perform data sieving for faster raw data reads & writes */
- *flags|=H5FD_FEAT_AGGREGATE_SMALLDATA; /* OK to aggregate "small" raw data allocations */
- }
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_get_eoa
- *
- * Purpose: Gets the end-of-address marker for the file. The EOA marker
- * is the first address past the last byte allocated in the
- * format address space.
- *
- * Return: Success: The end-of-address marker.
- *
- * Failure: HADDR_UNDEF
- *
- * Programmer: Saurabh Bagchi
- * Monday, August 16, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static haddr_t
-H5FD_gass_get_eoa(H5FD_t *_file)
-{
- H5FD_gass_t *file = (H5FD_gass_t *)_file;
- haddr_t ret_value; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_get_eoa, HADDR_UNDEF)
-
- /* Set return value */
- ret_value=file->eoa;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_set_eoa
- *
- * Purpose: Set the end-of-address marker for the file. This function is
- * called shortly after an existing HDF5 file is opened in order
- * to tell the driver where the end of the HDF5 data is located.
- *
- * Return: Success: 0
- *
- * Programmer: Saurabh Bagchi
- * Monday, August 16, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5FD_gass_set_eoa(H5FD_t *_file, haddr_t addr)
-{
- H5FD_gass_t *file = (H5FD_gass_t *)_file;
- herr_t ret_value=SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_set_eoa, FAIL)
-
- file->eoa = addr;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_get_eof
- *
- * Purpose: Returns the end-of-file marker, which is the greater of
- * either the Unix end-of-file or the HDF5 end-of-address
- * markers.
- *
- * Return: Success: End of file address, the first address past
- * the end of the "file", either the Unix file
- * or the HDF5 file.
- *
- * Failure: HADDR_UNDEF
- *
- * Programmer: Saurabh Bagchi
- * Monday, August 16, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static haddr_t
-H5FD_gass_get_eof(H5FD_t *_file)
-{
- H5FD_gass_t *file = (H5FD_gass_t*)_file;
- haddr_t ret_value; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_get_eof, HADDR_UNDEF)
-
- /* Set return value */
- ret_value=MAX(file->eof, file->eoa);
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * 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_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_read
- *
- * Purpose: Reads SIZE bytes of data from FILE beginning at address ADDR
- * into buffer BUF.
- *
- * Return: Success: Zero. Result is stored in caller-supplied
- * buffer BUF.
- *
- * Failure: -1, Contents of buffer BUF are undefined.
- *
- * Programmer: Saurabh Bagchi
- * Monday, August 16, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5FD_gass_read(H5FD_t *_file, H5FD_mem_t UNUSED type, hid_t dxpl_id/*unused*/, haddr_t addr,
- size_t size, void *buf/*out*/)
-{
- H5FD_gass_t *file = (H5FD_gass_t*)_file;
- ssize_t nbytes;
- herr_t ret_value=SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_read, FAIL)
-
- assert(file && file->pub.cls);
- assert(buf);
-
- /* Check for overflow conditions */
- if (HADDR_UNDEF==addr)
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "addr undefined")
- if (REGION_OVERFLOW(addr, size))
- HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr too large")
- if (addr+size>file->eoa)
- HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr too large")
-
- /* Seek to the correct location */
- if ((addr!=file->pos || OP_READ!=file->op) &&
- file_seek(file->fd, (file_offset_t)addr, SEEK_SET)<0) {
- file->pos = HADDR_UNDEF;
- file->op = OP_UNKNOWN;
- HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "gass file seek failed")
- }
-
- /*
- * Read data, being careful of interrupted system calls, partial results,
- * and the end of the file.
- */
- while (size>0) {
- do
- nbytes = read(file->fd, buf, size);
- while (-1==nbytes && EINTR==errno);
-
- if (-1==nbytes) {
- /* error */
- file->pos = HADDR_UNDEF;
- file->op = OP_UNKNOWN;
- HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "gass file read failed")
- }
- if (0==nbytes) {
- /* end of file but not end of format address space */
- memset(buf, 0, size);
- size = 0;
- }
- assert(nbytes>=0);
- assert(nbytes<=size);
- size -= (hsize_t)nbytes;
- addr += (haddr_t)nbytes;
- buf = (char*)buf + nbytes;
- }
-
- /* Update current position */
- file->pos = addr;
- file->op = OP_READ;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-
-/*-------------------------------------------------------------------------
- * Function: H5FD_gass_write
- *
- * Purpose: Writes SIZE bytes of data to FILE beginning at address ADDR
- * from buffer BUF.
- *
- * Return: Success: Zero
- *
- * Failure: -1
- *
- * Programmer: Saurabh Bagchi
- * Tuesday, August 17, 1999
- *
- * Modifications:
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5FD_gass_write(H5FD_t *_file, H5FD_mem_t type, hid_t dxpl_id/*unused*/, haddr_t addr,
- size_t size, const void *buf)
-{
- H5FD_gass_t *file = (H5FD_gass_t*)_file;
- ssize_t nbytes;
- herr_t ret_value=SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5FD_gass_write, FAIL)
-
- assert(file && file->pub.cls);
- assert(buf);
-
- /* Check for overflow conditions */
- if (HADDR_UNDEF==addr)
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "addr undefined")
- if (REGION_OVERFLOW(addr, size))
- HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr too large")
- if (addr+size>file->eoa)
- HGOTO_ERROR(H5E_ARGS, H5E_OVERFLOW, FAIL, "addr too large")
-
- /* Seek to the correct location */
- if ((addr!=file->pos || OP_WRITE!=file->op) &&
- file_seek(file->fd, (file_offset_t)addr, SEEK_SET)<0) {
- file->pos = HADDR_UNDEF;
- file->op = OP_UNKNOWN;
- HGOTO_ERROR(H5E_IO, H5E_SEEKERROR, FAIL, "gass file seek failed")
- }
-
- /*
- * Write the data, being careful of interrupted system calls and partial
- * results
- */
- while (size>0) {
- do
- nbytes = write(file->fd, buf, size);
- while (-1==nbytes && EINTR==errno);
-
- if (-1==nbytes) {
- /* error */
- file->pos = HADDR_UNDEF;
- file->op = OP_UNKNOWN;
- HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "gass file write failed")
- }
- assert(nbytes>0);
- assert(nbytes<=size);
- size -= (hsize_t)nbytes;
- addr += (haddr_t)nbytes;
- buf = (const char*)buf + nbytes;
- }
-
- /* Update current position and eof */
- file->pos = addr;
- file->op = OP_WRITE;
- if (file->pos>file->eof)
- file->eof = file->pos;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-}
-
-#endif /* H5_HAVE_GASS */