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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Fio.c
* Jan 10 2008
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: File I/O routines.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#define H5F_PACKAGE /*suppress error about including H5Fpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fpkg.h" /* File access */
#include "H5FDprivate.h" /* File drivers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5F_block_read
*
* Purpose: Reads some data from a file/server/etc into a buffer.
* The data is contiguous. The address is relative to the base
* address for the file.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 10 1997
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_block_read(const H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size,
hid_t dxpl_id, void *buf/*out*/)
{
htri_t accumulated; /* Whether the data was accepted by the metadata accumulator */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5F_block_read, FAIL)
HDassert(f);
HDassert(f->shared);
HDassert(buf);
/* Check for attempting I/O on 'temporary' file address */
if(H5F_addr_le(f->shared->tmp_addr, (addr + size)))
HGOTO_ERROR(H5E_IO, H5E_BADRANGE, FAIL, "attempting I/O in temporary file space")
/* Check if this I/O can be satisfied by the metadata accumulator */
if((accumulated = H5F_accum_read(f, dxpl_id, type, addr, size, buf)) < 0)
HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "read from metadata accumulator failed")
else if(accumulated == FALSE) {
/* Read the data */
if(H5FD_read(f->shared->lf, dxpl_id, type, addr, size, buf) < 0)
HGOTO_ERROR(H5E_IO, H5E_READERROR, FAIL, "driver read request failed")
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_block_read() */
/*-------------------------------------------------------------------------
* Function: H5F_block_write
*
* Purpose: Writes some data from memory to a file/server/etc. The
* data is contiguous. The address is relative to the base
* address.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 10 1997
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_block_write(const H5F_t *f, H5FD_mem_t type, haddr_t addr, size_t size,
hid_t dxpl_id, const void *buf)
{
htri_t accumulated; /* Whether the data was accepted by the metadata accumulator */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5F_block_write, FAIL)
#ifdef QAK
HDfprintf(stderr, "%s: write to addr = %a, size = %Zu\n", FUNC, addr, size);
#endif /* QAK */
HDassert(f);
HDassert(f->shared);
HDassert(f->intent & H5F_ACC_RDWR);
HDassert(buf);
/* Check for attempting I/O on 'temporary' file address */
if(H5F_addr_le(f->shared->tmp_addr, (addr + size)))
HGOTO_ERROR(H5E_IO, H5E_BADRANGE, FAIL, "attempting I/O in temporary file space")
/* Check for accumulating metadata */
if((accumulated = H5F_accum_write(f, dxpl_id, type, addr, size, buf)) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "write to metadata accumulator failed")
else if(accumulated == FALSE) {
/* Write the data */
if(H5FD_write(f->shared->lf, dxpl_id, type, addr, size, buf) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "file write failed")
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_block_write() */
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