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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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Raymond Lu <songyulu@hdfgroup.org>
* April, 2019
*
* Purpose: Private function for external.c and external_env.c
*/
#include "external_common.h"
/*-------------------------------------------------------------------------
* Function: reset_raw_data_files
*
* Purpose: Resets the data in the raw data files for tests that
* perform dataset I/O on a set of files.
*
* Return: SUCCEED/FAIL
*
* Programmer: Dana Robinson
* February 2016
*
*-------------------------------------------------------------------------
*/
herr_t
reset_raw_data_files(void)
{
int fd = 0; /* external file descriptor */
size_t i, j; /* iterators */
hssize_t n; /* bytes of I/O */
char filename[1024]; /* file name */
int data[PART_SIZE]; /* raw data buffer */
uint8_t *garbage = NULL; /* buffer of garbage data */
size_t garbage_count; /* size of garbage buffer */
size_t garbage_bytes; /* # of garbage bytes written to file */
/* Set up garbage buffer */
garbage_count = N_EXT_FILES * GARBAGE_PER_FILE;
if(NULL == (garbage = (uint8_t *)HDcalloc(garbage_count, sizeof(uint8_t))))
goto error;
for(i = 0; i < garbage_count; i++)
garbage[i] = 0xFF;
/* The *r files are pre-filled with data and are used to
* verify that read operations work correctly.
*/
for(i = 0; i < N_EXT_FILES; i++) {
/* Open file */
HDsprintf(filename, "extern_%lur.raw", (unsigned long)i + 1);
if((fd = HDopen(filename, O_RDWR|O_CREAT|O_TRUNC, H5_POSIX_CREATE_MODE_RW)) < 0)
goto error;
/* Write garbage data to the file. This allows us to test the
* the ability to set an offset in the raw data file.
*/
garbage_bytes = i * 10;
n = HDwrite(fd, garbage, garbage_bytes);
if(n < 0 || (size_t)n != garbage_bytes)
goto error;
/* Fill array with data */
for(j = 0; j < PART_SIZE; j++) {
data[j] = (int)(i * 25 + j);
} /* end for */
/* Write raw data to the file. */
n = HDwrite(fd, data, sizeof(data));
if(n != sizeof(data))
goto error;
/* Close this file */
HDclose(fd);
} /* end for */
/* The *w files are only pre-filled with the garbage data and are
* used to verify that write operations work correctly. The individual
* tests fill in the actual data.
*/
for(i = 0; i < N_EXT_FILES; i++) {
/* Open file */
HDsprintf(filename, "extern_%luw.raw", (unsigned long)i + 1);
if((fd = HDopen(filename, O_RDWR|O_CREAT|O_TRUNC, H5_POSIX_CREATE_MODE_RW)) < 0)
goto error;
/* Write garbage data to the file. This allows us to test the
* the ability to set an offset in the raw data file.
*/
garbage_bytes = i * 10;
n = HDwrite(fd, garbage, garbage_bytes);
if(n < 0 || (size_t)n != garbage_bytes)
goto error;
/* Close this file */
HDclose(fd);
} /* end for */
HDfree(garbage);
return SUCCEED;
error:
if(fd)
HDclose(fd);
if(garbage)
HDfree(garbage);
return FAIL;
}
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