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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: Generate an HDF5 file for testing H5FFV-10216
*/
#include "h5test.h"
#define TESTFILE "bad_offset.h5"
#define GRP1 "group1"
#define GRP2 "group2"
#define DSET "dsetA"
#define SOFT1 "soft_one"
#define SOFT2 "soft_two"
/*-------------------------------------------------------------------------
* Function: main
*
* Generate an HDF5 file with groups, datasets and symbolic links.
* After the file is generated, write bad offset values to
* the heap at 3 locations in the file:
* (A) Open the file:
* fd = HDopen(TESTFILE, O_RDWR, 0663);
* (B) Position the file at:
* (1) HDlseek(fd, (HDoff_t)880, SEEK_SET);
* "/group1/group2": replace heap offset "8" by bad offset
* (2) HDlseek(fd, (HDoff_t)1512, SEEK_SET);
* "/dsetA": replace name offset into private heap "72" by bad offset
* (3) HDlseek(fd, (HDoff_t)1616, SEEK_SET);
* /soft_one: replace link value offset in the scratch pad "32" by bad offset
* (C) Write the bad offset value to the file for (1), (2) and (3):
* write(fd, &val, sizeof(val));
*
* Note: if the groups/datasets/symbolic links are changed in the file,
* the above locations need to be adjusted accordingly.
*
* Return: EXIT_SUCCESS/EXIT_FAILURE
*
*-------------------------------------------------------------------------
*/
int
main(void)
{
hid_t fid = -1, gid1 = -1, gid2 = -1; /* File and group IDs */
hid_t did = -1, sid = -1; /* Dataset and dataspace IDs */
int fd = -1; /* File descriptor */
int64_t val = 999; /* Bad offset value */
/* Create the test file */
if ((fid = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
FAIL_STACK_ERROR;
/* Create two groups */
if ((gid1 = H5Gcreate2(fid, GRP1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
FAIL_STACK_ERROR;
if ((gid2 = H5Gcreate2(gid1, GRP2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
FAIL_STACK_ERROR;
/* Close the groups */
if (H5Gclose(gid1) < 0)
FAIL_STACK_ERROR;
if (H5Gclose(gid2) < 0)
FAIL_STACK_ERROR;
/* Create soft links to the groups */
if (H5Lcreate_soft("/group1", fid, SOFT1, H5P_DEFAULT, H5P_DEFAULT) < 0)
FAIL_STACK_ERROR;
if (H5Lcreate_soft("/group1/group2", fid, SOFT2, H5P_DEFAULT, H5P_DEFAULT) < 0)
FAIL_STACK_ERROR;
/* Create a dataset */
if ((sid = H5Screate(H5S_SCALAR)) < 0)
FAIL_STACK_ERROR;
if ((did = H5Dcreate2(fid, DSET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
FAIL_STACK_ERROR;
/* Close the dataset */
if (H5Dclose(did) < 0)
FAIL_STACK_ERROR;
/* Close the dataspace */
if (H5Sclose(sid) < 0)
FAIL_STACK_ERROR;
/* Close the file */
if (H5Fclose(fid) < 0)
FAIL_STACK_ERROR;
/*
* Write bad offset values at 3 locations in the file
*/
/* Open the file */
if ((fd = HDopen(TESTFILE, O_RDWR, 0663)) < 0)
FAIL_STACK_ERROR;
/* Position the file for /group1/group2: replace heap offset "8" by bad offset */
if (HDlseek(fd, (HDoff_t)880, SEEK_SET) < 0)
FAIL_STACK_ERROR;
/* Write the bad offset value to the file */
if (HDwrite(fd, &val, sizeof(val)) < 0)
FAIL_STACK_ERROR;
/* Position the file for /dsetA: replace name offset into private heap "72" by bad offset */
if (HDlseek(fd, (HDoff_t)1512, SEEK_SET) < 0)
FAIL_STACK_ERROR;
/* Write the bad offset value to the file */
if (HDwrite(fd, &val, sizeof(val)) < 0)
FAIL_STACK_ERROR;
/* Position the file for /soft_one: replace link value offset in the scratch pad "32" by bad offset */
if (HDlseek(fd, (HDoff_t)1616, SEEK_SET) < 0)
FAIL_STACK_ERROR;
/* Write the bad offset value to the file */
if (HDwrite(fd, &val, sizeof(val)) < 0)
FAIL_STACK_ERROR;
/* Close the file */
if (HDclose(fd) < 0)
FAIL_STACK_ERROR;
return EXIT_SUCCESS;
error:
H5E_BEGIN_TRY
{
H5Gclose(gid1);
H5Gclose(gid2);
H5Dclose(did);
H5Sclose(sid);
H5Fclose(fid);
}
H5E_END_TRY
return EXIT_FAILURE;
} /* end main() */
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