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hdf5/test/file_image.c
Quincey Koziol 0df6e44a6e Squashed commit of private branch changes to support stackable VOL plugins. 
modified:   test/dsets.c
2018-10-24 23:52:47 -05:00

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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/***********************************************************
*
* Test program: file_image
*
* Test setting file images
*
*************************************************************/
#include "h5test.h"
#include "H5Fprivate.h" /* required to test property removals */
#define VERIFY(condition, string) do { if (!(condition)) FAIL_PUTS_ERROR(string) } while(0)
/* Values for callback bit field */
#define MALLOC 0x01
#define MEMCPY 0x02
#define REALLOC 0x04
#define FREE 0x08
#define UDATA_COPY 0x10
#define UDATA_FREE 0x20
#define RANK 2
#define DIM0 1024
#define DIM1 32
#define DSET_NAME "test_dset"
#define FAMILY_SIZE (2 * 1024)
#define USERBLOCK_SIZE 512
const char *FILENAME[] = {
"file_image_core_test",
NULL
};
/* need a second file name array, as the first file name array contains
* files we don't want to delete on cleanup.
*/
const char *FILENAME2[] = {
"sec2_get_file_image_test",
"stdio_get_file_image_test",
"core_get_file_image_test",
"family_get_file_image_test",
"multi_get_file_image_test",
"split_get_file_image_test",
"get_file_image_error_rejection_test",
NULL
};
typedef struct {
unsigned char used_callbacks; /* Bitfield for tracking callbacks */
H5FD_file_image_op_t malloc_src; /* Source of file image callbacks */
H5FD_file_image_op_t memcpy_src;
H5FD_file_image_op_t realloc_src;
H5FD_file_image_op_t free_src;
} udata_t;
/******************************************************************************
* Function: test_properties
*
* Purpose: Tests that the file image properties (buffer pointer and length)
* are set properly. Image callbacks are not set in this test.
*
* Returns: Success: 0
* Failure: 1
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static int
test_properties(void)
{
hid_t fapl_1 = -1;
hid_t fapl_2 = -1;
char *buffer = 0;
int count = 10;
void *temp = 0;
char *temp2 = 0;
int i;
size_t size;
size_t temp_size;
int retval = 1;
TESTING("File image property list functions");
/* Initialize file image buffer
*
* Note: this image will not contain a valid HDF5 file, as it complicates testing
* property list functions. In the file driver tests further down, this will
* not be the case.
*/
size = (size_t)count * sizeof(char);
buffer = (char *)HDmalloc(size);
for(i = 0; i < count - 1; i++)
buffer[i] = (char)(65 + i);
buffer[count - 1] = '\0';
/* Create fapl */
if((fapl_1 = H5Pcreate(H5P_FILE_ACCESS)) < 0) FAIL_STACK_ERROR
/* Get file image stuff */
if(H5Pget_file_image(fapl_1, (void **)&temp, &temp_size) < 0) FAIL_STACK_ERROR
/* Check default values */
VERIFY(temp == NULL, "Default pointer is wrong");
VERIFY(temp_size == 0, "Default size is wrong");
/* Set file image stuff */
if(H5Pset_file_image(fapl_1, (void *)buffer, size) < 0) FAIL_STACK_ERROR
/* Get the same */
if(H5Pget_file_image(fapl_1, (void **)&temp, &temp_size) < 0) FAIL_STACK_ERROR
/* Check that sizes are the same, and that the buffers are identical but separate */
VERIFY(temp != NULL, "temp is null!");
VERIFY(temp_size == size, "Sizes of buffers don't match");
VERIFY(temp != buffer, "Retrieved buffer is the same as original");
VERIFY(0 == HDmemcmp(temp, buffer, size), "Buffers contain different data");
/* Copy the fapl */
if((fapl_2 = H5Pcopy(fapl_1)) < 0) FAIL_STACK_ERROR
/* Get values from the new fapl */
if(H5Pget_file_image(fapl_2, (void **)&temp2, &temp_size) < 0) FAIL_STACK_ERROR
/* Check that sizes are the same, and that the buffers are identical but separate */
VERIFY(temp_size == size,"Sizes of buffers don't match");
VERIFY(temp2 != NULL,"Recieved buffer not set");
VERIFY(temp2 != buffer, "Retrieved buffer is the same as original");
VERIFY(temp2 != temp, "Retrieved buffer is the same as previously retrieved buffer");
VERIFY(0 == HDmemcmp(temp2, buffer, size),"Buffers contain different data");
retval = 0;
error:
/* Close everything */
if(H5Pclose(fapl_1) < 0) retval = 1;
if(H5Pclose(fapl_2) < 0) retval = 1;
HDfree(buffer);
H5free_memory(temp);
H5free_memory(temp2);
if(retval == 0)
PASSED();
return retval;
} /* end test_properties() */
/******************************************************************************
* Function: malloc_cb
*
* Purpose: This function allows calls to the malloc callback to be tracked.
*
* Returns: The result of a standard malloc
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static void *
malloc_cb(size_t size, H5FD_file_image_op_t op, void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= MALLOC;
u->malloc_src = op;
return HDmalloc(size);
}
/******************************************************************************
* Function: memcpy_cb
*
* Purpose: This function allows calls to the memcpy callback to be tracked.
*
* Returns: The result of a standard memcpy
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static void *
memcpy_cb(void *dest, const void *src, size_t size, H5FD_file_image_op_t op, void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= MEMCPY;
u->memcpy_src = op;
return HDmemcpy(dest, src, size);
}
/******************************************************************************
* Function: realloc_cb
*
* Purpose: This function allows calls to the realloc callback to be tracked.
*
* Returns: The result of a standard realloc
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static void *
realloc_cb(void *ptr, size_t size, H5FD_file_image_op_t op, void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= REALLOC;
u->realloc_src = op;
return HDrealloc(ptr,size);
}
/******************************************************************************
* Function: free_cb
*
* Purpose: This function allows calls to the free callback to be tracked.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static herr_t
free_cb(void *ptr, H5FD_file_image_op_t op, void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= FREE;
u->free_src = op;
HDfree(ptr);
return(SUCCEED);
}
/******************************************************************************
* Function: udata_copy_cb
*
* Purpose: This function allows calls to the udata_copy callback to be tracked.
* No copying actualy takes place; it is easier to deal with only one
* instance of the udata.
*
* Returns: A pointer to the same udata that was passed in.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static void *
udata_copy_cb(void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= UDATA_COPY;
return udata;
}
/******************************************************************************
* Function: udata_free_cb
*
* Purpose: This function allows calls to the udata_free callback to be tracked.
*
* Note: this callback doesn't actually do anything. Since the
* udata_copy callback doesn't copy, only one instance of the udata
* is kept alive and such it must be freed explicitly at the end of the tests.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static herr_t
udata_free_cb(void *udata)
{
udata_t *u = (udata_t *)udata;
u->used_callbacks |= UDATA_FREE;
return(SUCCEED);
}
/******************************************************************************
* Function: reset_udata
*
* Purpose: Resets the udata to default values. This facilitates storing only
* the results of a single operation in the udata.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static void
reset_udata(udata_t *u)
{
u->used_callbacks = 0;
u->malloc_src = u->memcpy_src = u->realloc_src = u->free_src = H5FD_FILE_IMAGE_OP_NO_OP;
}
/******************************************************************************
* Function: test_callbacks
*
* Purpose: Tests that callbacks are called properly in property list functions.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static int
test_callbacks(void)
{
H5FD_file_image_callbacks_t real_callbacks = {&malloc_cb, &memcpy_cb, &realloc_cb,
&free_cb, &udata_copy_cb, &udata_free_cb, NULL};
H5FD_file_image_callbacks_t null_callbacks = {NULL, NULL, NULL, NULL, NULL, NULL, NULL};
H5FD_file_image_callbacks_t callbacks;
hid_t fapl_1;
hid_t fapl_2;
udata_t *udata;
char *file_image;
char *temp_file_image;
int count = 10;
int i;
size_t size;
size_t temp_size;
TESTING("Callback use in property list operations");
/* Allocate and initialize udata */
udata = (udata_t *)HDmalloc(sizeof(udata_t));
reset_udata(udata);
/* copy the address of the user data into read_callbacks */
real_callbacks.udata = (void *)udata;
/* Allocate and initialize file image buffer */
size = (size_t)count * sizeof(char);
file_image = (char *)HDmalloc(size);
for(i = 0; i < count - 1; i++)
file_image[i] = (char)(65 + i);
file_image[count - 1] = '\0';
/* Create fapl */
if((fapl_1 = H5Pcreate(H5P_FILE_ACCESS)) < 0) FAIL_STACK_ERROR
/* Get file image stuff */
callbacks = real_callbacks;
if(H5Pget_file_image_callbacks(fapl_1, &callbacks) < 0) FAIL_STACK_ERROR
/* Check default values */
VERIFY(callbacks.image_malloc == NULL, "Default malloc callback is wrong");
VERIFY(callbacks.image_memcpy == NULL, "Default memcpy callback is wrong");
VERIFY(callbacks.image_realloc == NULL, "Default realloc callback is wrong");
VERIFY(callbacks.image_free == NULL, "Default free callback is wrong");
VERIFY(callbacks.udata_copy == NULL, "Default udata copy callback is wrong");
VERIFY(callbacks.udata_free == NULL, "Default udata free callback is wrong");
VERIFY(callbacks.udata == NULL, "Default udata is wrong");
/* Set file image callbacks */
callbacks = real_callbacks;
if(H5Pset_file_image_callbacks(fapl_1, &callbacks) < 0) FAIL_STACK_ERROR
/* Get file image callbacks */
callbacks = null_callbacks;
if(H5Pget_file_image_callbacks(fapl_1, &callbacks) < 0) FAIL_STACK_ERROR
/* Verify values */
VERIFY(callbacks.image_malloc == &malloc_cb, "malloc callback was not set or retrieved properly");
VERIFY(callbacks.image_memcpy == &memcpy_cb, "memcpy callback was not set or retrieved properly");
VERIFY(callbacks.image_realloc == &realloc_cb, "realloc callback was not set or retrieved properly");
VERIFY(callbacks.image_free == &free_cb, "free callback was not set or retrieved properly");
VERIFY(callbacks.udata_copy == &udata_copy_cb, "udata copy callback was not set or retrieved properly");
VERIFY(callbacks.udata_free == &udata_free_cb, "udata free callback was not set or retrieved properly");
VERIFY(callbacks.udata == udata, "udata was not set or retrieved properly");
/*
* Check callbacks in internal function without a previously set file image
*/
/* Copy fapl */
reset_udata(udata);
if((fapl_2 = H5Pcopy(fapl_1)) < 0) FAIL_STACK_ERROR
/* Verify that the property's copy callback used the correct image callbacks */
VERIFY(udata->used_callbacks == (UDATA_COPY), "Copying a fapl with no image used incorrect callbacks");
/* Close fapl */
reset_udata(udata);
if(H5Pclose(fapl_2) < 0) FAIL_STACK_ERROR
/* Verify that the udata free callback was used */
VERIFY(udata->used_callbacks == (UDATA_FREE), "Closing a fapl with no image used incorrect callbacks");
/* Copy again */
if((fapl_2 = H5Pcopy(fapl_1)) < 0) FAIL_STACK_ERROR
/* Remove property from fapl */
reset_udata(udata);
if(H5Premove(fapl_2, H5F_ACS_FILE_IMAGE_INFO_NAME) < 0) FAIL_STACK_ERROR
/* Verify that the property's delete callback was called using the correct image callbacks */
VERIFY(udata->used_callbacks == (UDATA_FREE), "Removing a property from a fapl with no image used incorrect callbacks");
/* Close it again */
if(H5Pclose(fapl_2) < 0) FAIL_STACK_ERROR
/* Get file image */
reset_udata(udata);
if(H5Pget_file_image(fapl_1, (void **)&temp_file_image, &temp_size) < 0) FAIL_STACK_ERROR
/* Verify that the correct callbacks were used */
VERIFY(udata->used_callbacks == 0, "attempting to retrieve the image from a fapl without an image has an unexpected callback");
/* Set file image */
reset_udata(udata);
if(H5Pset_file_image(fapl_1, (void *)file_image, size) < 0) FAIL_STACK_ERROR
VERIFY(udata->used_callbacks == (MALLOC | MEMCPY), "Setting a file image (first time) used incorrect callbacks");
/*
* Check callbacks in internal functions with a previously set file image
*/
/* Copy fapl */
reset_udata(udata);
if((fapl_2 = H5Pcopy(fapl_1)) < 0) FAIL_STACK_ERROR
/* Verify that the property's copy callback used the correct image callbacks */
VERIFY(udata->used_callbacks == (MALLOC | MEMCPY | UDATA_COPY), "Copying a fapl with an image used incorrect callbacks");
VERIFY(udata->malloc_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_COPY, "malloc callback has wrong source");
VERIFY(udata->memcpy_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_COPY, "memcpy callback has wrong source");
/* Close fapl */
reset_udata(udata);
if(H5Pclose(fapl_2) < 0) FAIL_STACK_ERROR
/* Verify that the udata free callback was used */
VERIFY(udata->used_callbacks == (FREE | UDATA_FREE), "Closing a fapl with an image used incorrect callbacks");
VERIFY(udata->free_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_CLOSE, "free callback has wrong source");
/* Copy again */
if((fapl_2 = H5Pcopy(fapl_1)) < 0) FAIL_STACK_ERROR
/* Remove property from fapl */
reset_udata(udata);
if(H5Premove(fapl_2, H5F_ACS_FILE_IMAGE_INFO_NAME) < 0) FAIL_STACK_ERROR
/* Verify that the property's delete callback was called using the correct image callbacks */
VERIFY(udata->used_callbacks == (FREE | UDATA_FREE), "Removing a property from a fapl with an image used incorrect callbacks");
VERIFY(udata->free_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_CLOSE, "free callback has wrong source");
/* Close it again */
if(H5Pclose(fapl_2) < 0) FAIL_STACK_ERROR
/* Get file image */
reset_udata(udata);
if(H5Pget_file_image(fapl_1, (void **)&temp_file_image, &temp_size) < 0) FAIL_STACK_ERROR
/* Verify that the correct callbacks were used */
VERIFY(udata->used_callbacks == (MALLOC | MEMCPY), "attempting to retrieve the image from a fapl with an image has an unexpected callback");
VERIFY(udata->malloc_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_GET, "malloc callback has wrong source");
VERIFY(udata->memcpy_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_GET, "memcpy callback has wrong source");
/* Set file image */
reset_udata(udata);
if(H5Pset_file_image(fapl_1, (void *)file_image, size) < 0) FAIL_STACK_ERROR
VERIFY(udata->used_callbacks == (FREE | MALLOC | MEMCPY), "Setting a file image (second time) used incorrect callbacks");
VERIFY(udata->malloc_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_SET, "malloc callback has wrong source");
VERIFY(udata->memcpy_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_SET, "memcpy callback has wrong source");
VERIFY(udata->free_src == H5FD_FILE_IMAGE_OP_PROPERTY_LIST_SET, "freec callback has wrong source");
/* Close stuff */
if(H5Pclose(fapl_1) < 0) FAIL_STACK_ERROR
HDfree(file_image);
HDfree(temp_file_image);
HDfree(udata);
PASSED();
return 0;
error:
return 1;
} /* test_callbacks() */
/******************************************************************************
* Function: test_core
*
* Purpose: Tests that callbacks are called properly in the core VFD and
* that the initial file image works properly.
*
* Programmer: Jacob Gruber
* Monday, August 22, 2011
*
******************************************************************************
*/
static int
test_core(void)
{
hid_t fapl;
hid_t file;
hid_t dset;
hid_t space;
udata_t *udata;
unsigned char *file_image;
char filename[1024];
char copied_filename[1024];
const char *tmp = NULL;
size_t size;
hsize_t dims[2];
int fd;
h5_stat_t sb;
herr_t ret;
H5FD_file_image_callbacks_t callbacks = {&malloc_cb, &memcpy_cb, &realloc_cb,
&free_cb, &udata_copy_cb, &udata_free_cb, NULL};
TESTING("Initial file image and callbacks in Core VFD");
/* Create fapl */
fapl = h5_fileaccess();
VERIFY(fapl >= 0, "fapl creation failed");
/* Set up the core VFD */
ret = H5Pset_fapl_core(fapl, (size_t)0, 0);
VERIFY(ret >= 0, "setting core driver in fapl failed");
tmp = h5_fixname(FILENAME[0], fapl, filename, sizeof(filename));
VERIFY(tmp != NULL, "h5_fixname failed");
/* Append ".copy" to the filename from the source directory */
VERIFY(HDstrlen(filename) < (1023 - 5), "file name too long.");
HDstrncpy(copied_filename, filename, (size_t)1023);
copied_filename[1023] = '\0';
HDstrcat(copied_filename, ".copy");
/* Make a copy of the data file from svn. */
ret = h5_make_local_copy(filename, copied_filename);
VERIFY(ret >= 0, "h5_make_local_copy");
/* Allocate and initialize udata */
udata = (udata_t *)HDmalloc(sizeof(udata_t));
VERIFY(udata != NULL, "udata malloc failed");
/* copy the address of the udata into the callbacks structure */
callbacks.udata = (void *)udata;
/* Set file image callbacks */
ret = H5Pset_file_image_callbacks(fapl, &callbacks);
VERIFY(ret >= 0, "set image callbacks failed");
/* Test open (no file image) */
reset_udata(udata);
file = H5Fopen(copied_filename, H5F_ACC_RDONLY, fapl);
VERIFY(file >= 0, "H5Fopen failed");
VERIFY((udata->used_callbacks == MALLOC) ||
(udata->used_callbacks == MALLOC | UDATA_COPY | UDATA_FREE), "opening a core file used the wrong callbacks");
VERIFY(udata->malloc_src == H5FD_FILE_IMAGE_OP_FILE_OPEN, "Malloc callback came from wrong sourc in core open");
/* Close file */
reset_udata(udata);
ret = H5Fclose(file);
VERIFY(ret >= 0, "H5Fclose failed");
VERIFY(udata->used_callbacks == FREE, "Closing a core file used the wrong callbacks");
VERIFY(udata->free_src == H5FD_FILE_IMAGE_OP_FILE_CLOSE, "Free callback came from wrong sourc in core close");
/* Reopen file */
file = H5Fopen(copied_filename, H5F_ACC_RDWR, fapl);
VERIFY(file >= 0, "H5Fopen failed");
/* Set up a new dset */
dims[0] = DIM0;
dims[1] = DIM1;
space = H5Screate_simple(RANK, dims, dims);
VERIFY(space >= 0, "H5Screate failed");
/* Create new dset, invoking H5FD_core_write */
reset_udata(udata);
dset = H5Dcreate2(file, DSET_NAME, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset >=0, "H5Dcreate failed");
/* Flush the write and check the realloc callback */
ret = H5Fflush(file, H5F_SCOPE_LOCAL);
VERIFY(ret >= 0, "H5Fflush failed");
VERIFY(udata->used_callbacks == (REALLOC), "core write used the wrong callbacks");
VERIFY(udata->realloc_src == H5FD_FILE_IMAGE_OP_FILE_RESIZE, "Realloc callback came from wrong source in core write");
/* Close dset and space */
ret = H5Dclose(dset);
VERIFY(ret >= 0, "H5Dclose failed");
ret = H5Sclose(space);
VERIFY(ret >= 0, "H5Sclose failed");
/* Test file close */
reset_udata(udata);
ret = H5Fclose(file);
VERIFY(ret >= 0, "H5Fclose failed");
VERIFY(udata->used_callbacks == (FREE), "Closing a core file used the wrong callbacks");
VERIFY(udata->free_src == H5FD_FILE_IMAGE_OP_FILE_CLOSE, "Free callback came from wrong sourc in core close");
/* Create file image buffer */
fd = HDopen(copied_filename, O_RDONLY);
VERIFY(fd > 0, "open failed");
ret = HDfstat(fd, &sb);
VERIFY(ret == 0, "fstat failed");
size = (size_t)sb.st_size;
file_image = (unsigned char *)HDmalloc(size);
if(HDread(fd, file_image, size) < 0)
FAIL_PUTS_ERROR("unable to read from file descriptor");
ret = HDclose(fd);
VERIFY(ret == 0, "close failed");
/* Set file image in plist */
if(H5Pset_file_image(fapl, file_image, size) < 0) FAIL_STACK_ERROR
/* Test open with file image */
if((file = H5Fopen("dne.h5", H5F_ACC_RDONLY, fapl)) < 0) FAIL_STACK_ERROR
if(H5Fclose(file) < 0) FAIL_STACK_ERROR
/* Release resources */
h5_clean_files(FILENAME, fapl);
HDfree(udata);
HDfree(file_image);
HDremove(copied_filename);
PASSED();
return 0;
error:
return 1;
} /* end test_core() */
/******************************************************************************
* Function: test_get_file_image
*
* Purpose: Test the H5Fget_file_image() call.
*
* Programmer: John Mainzer
* Tuesday, November 15, 2011
*
* Modifications:
* Vailin Choi; July 2013
* Add the creation of user block to the file as indicated by the parameter "user".
*
******************************************************************************
*/
static int
test_get_file_image(const char * test_banner,
const int file_name_num,
hid_t fapl,
hbool_t user)
{
char file_name[1024] = "\0";
void * insertion_ptr = NULL;
void * image_ptr = NULL;
void * file_image_ptr = NULL;
hbool_t is_family_file = FALSE;
hbool_t identical;
int data[100];
int i;
int fd = -1;
int result;
hid_t driver = -1;
hid_t file_id = -1;
hid_t dset_id = -1;
hid_t space_id = -1;
hid_t core_fapl_id = -1;
hid_t core_file_id = -1;
herr_t err;
hsize_t dims[2];
ssize_t bytes_read;
ssize_t image_size;
ssize_t file_size;
h5_stat_t stat_buf;
hid_t fcpl = -1;
herr_t ret;
TESTING(test_banner);
/* set flag if we are dealing with a family file */
driver = H5Pget_driver(fapl);
VERIFY(driver >= 0, "H5Pget_driver(fapl) failed");
if(driver == H5FD_FAMILY)
is_family_file = TRUE;
/* setup the file name */
h5_fixname(FILENAME2[file_name_num], fapl, file_name, sizeof(file_name));
VERIFY(HDstrlen(file_name)>0, "h5_fixname failed");
fcpl = H5Pcreate(H5P_FILE_CREATE);
VERIFY(fcpl >= 0, "H5Pcreate");
if(user) {
ret = H5Pset_userblock(fcpl, (hsize_t)USERBLOCK_SIZE);
VERIFY(ret >=0, "H5Pset_userblock");
}
/* create the file */
file_id = H5Fcreate(file_name, 0, fcpl, fapl);
VERIFY(file_id >= 0, "H5Fcreate() failed.");
/* Set up data space for new new data set */
dims[0] = 10;
dims[1] = 10;
space_id = H5Screate_simple(2, dims, dims);
VERIFY(space_id >= 0, "H5Screate() failed");
/* Create a dataset */
dset_id = H5Dcreate2(file_id, "dset 0", H5T_NATIVE_INT, space_id,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset_id >=0, "H5Dcreate() failed");
/* write some data to the data set */
for (i = 0; i < 100; i++)
data[i] = i;
err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, (void *)data);
VERIFY(err >= 0, "H5Dwrite() failed.");
/* Flush the file */
err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
VERIFY(err >= 0, "H5Fflush failed");
/* get the size of the file */
image_size = H5Fget_file_image(file_id, NULL, (size_t)0);
VERIFY(image_size > 0, "H5Fget_file_image(1) failed.");
/* allocate a buffer of the appropriate size */
image_ptr = HDmalloc((size_t)image_size);
VERIFY(image_ptr != NULL, "HDmalloc(1) failed.");
/* load the image of the file into the buffer */
bytes_read = H5Fget_file_image(file_id, image_ptr, (size_t)image_size);
VERIFY(bytes_read == image_size, "H5Fget_file_image(2) failed.");
/* Close dset and space */
err = H5Dclose(dset_id);
VERIFY(err >= 0, "H5Dclose failed");
err = H5Sclose(space_id);
VERIFY(err >= 0, "H5Sclose failed");
/* close the test file */
err = H5Fclose(file_id);
VERIFY(err == SUCCEED, "H5Fclose(file_id) failed.");
if(is_family_file) {
char member_file_name[1024];
ssize_t bytes_to_read;
ssize_t member_size;
ssize_t size_remaining;
/*
* Modifications need to be made to accommodate userblock when
* H5Fget_file_image() works for family driver
*/
i = 0;
file_size = 0;
do {
HDsnprintf(member_file_name, (size_t)1024, file_name, i);
/* get the size of the member file */
result = HDstat(member_file_name, &stat_buf);
VERIFY(result == 0, "HDstat() failed.");
member_size = (ssize_t)stat_buf.st_size;
i++;
file_size += member_size;
} while(member_size > 0);
/* Since we use the eoa to calculate the image size, the file size
* may be larger. This is OK, as long as (in this specialized instance)
* the remainder of the file is all '\0's.
*/
VERIFY(file_size >= image_size, "file size != image size.");
/* allocate a buffer for the test file image */
file_image_ptr = HDmalloc((size_t)file_size);
VERIFY(file_image_ptr != NULL, "HDmalloc(2f) failed.");
size_remaining = image_size;
insertion_ptr = file_image_ptr;
i = 0;
while(size_remaining > 0) {
/* construct the member file name */
HDsnprintf(member_file_name, 1024, file_name, i);
/* open the test file using standard I/O calls */
fd = HDopen(member_file_name, O_RDONLY);
VERIFY(fd >= 0, "HDopen() failed.");
if(size_remaining >= FAMILY_SIZE ){
bytes_to_read = FAMILY_SIZE;
size_remaining -= FAMILY_SIZE;
} else {
bytes_to_read = size_remaining;
size_remaining = 0;
}
/* read the member file from disk into the buffer */
bytes_read = HDread(fd, insertion_ptr, (size_t)bytes_to_read);
VERIFY(bytes_read == bytes_to_read, "HDread() failed.");
insertion_ptr = (void *)(((char *)insertion_ptr) + bytes_to_read);
i++;
/* close the test file */
result = HDclose(fd);
VERIFY(result == 0, "HDclose() failed.");
}
} else {
/* get the size of the test file */
result = HDstat(file_name, &stat_buf);
VERIFY(result == 0, "HDstat() failed.");
/* Since we use the eoa to calculate the image size, the file size
* may be larger. This is OK, as long as (in this specialized instance)
* the remainder of the file is all '\0's.
*/
file_size = (ssize_t)stat_buf.st_size;
if(user) {
VERIFY(file_size > USERBLOCK_SIZE, "file size !> userblock size.");
file_size -= USERBLOCK_SIZE;
}
/* with latest mods to truncate call in core file drive,
* file size should match image size
*/
VERIFY(file_size == image_size, "file size != image size.");
/* allocate a buffer for the test file image */
file_image_ptr = HDmalloc((size_t)file_size);
VERIFY(file_image_ptr != NULL, "HDmalloc(2) failed.");
/* open the test file using standard I/O calls */
fd = HDopen(file_name, O_RDONLY);
VERIFY(fd >= 0, "HDopen() failed.");
if(user) {
HDoff_t off;
/* Position at userblock */
off = HDlseek(fd, (off_t)USERBLOCK_SIZE, SEEK_SET);
VERIFY(off >= 0, "HDlseek() failed.");
}
/* read the test file from disk into the buffer */
bytes_read = HDread(fd, file_image_ptr, (size_t)file_size);
VERIFY(bytes_read == file_size, "HDread() failed.");
/* close the test file */
result = HDclose(fd);
VERIFY(result == 0, "HDclose() failed.");
}
/* verify that the file and the image contain the same data */
identical = TRUE;
i = 0;
while((i < (int)image_size) && identical) {
if(((char *)image_ptr)[i] != ((char *)file_image_ptr)[i])
identical = FALSE;
i++;
}
VERIFY(identical, "file and image differ.");
/* finally, verify that we can use the core file driver to open the image */
/* create fapl for core file driver */
core_fapl_id = H5Pcreate(H5P_FILE_ACCESS);
VERIFY(core_fapl_id >=0, "H5Pcreate() failed");
/* setup core_fapl_id to use the core file driver */
err = H5Pset_fapl_core(core_fapl_id, (size_t)(64 * 1024), FALSE);
VERIFY(err == SUCCEED, "H5Pset_fapl_core() failed.");
/* Set file image in core fapl */
err = H5Pset_file_image(core_fapl_id, image_ptr, (size_t)image_size);
VERIFY(err == SUCCEED, "H5Pset_file_image() failed.");
/* open the file image with the core file driver */
core_file_id = H5Fopen("nonesuch", H5F_ACC_RDWR, core_fapl_id);
VERIFY(core_file_id >= 0, "H5Fopen() of file image failed.");
/* close the file image with the core file driver */
err = H5Fclose(core_file_id);
VERIFY(err == SUCCEED, "H5Fclose(core_file_id) failed.");
/* dicard core fapl */
err = H5Pclose(core_fapl_id);
VERIFY(err == SUCCEED, "H5Pclose(core_fapl_id) failed.");
/* tidy up */
h5_clean_files(FILENAME2, fapl);
/* discard the image buffer if it exists */
if(image_ptr != NULL)
HDfree(image_ptr);
/* discard the image buffer if it exists */
if(file_image_ptr != NULL)
HDfree(file_image_ptr);
PASSED();
return 0;
error:
return 1;
} /* end test_get_file_image() */
/******************************************************************************
* Function: test_get_file_image_error_rejection
*
* Purpose: Verify that H5Fget_file_image() rejects invalid input.
*
* Programmer: John Mainzer
* Tuesday, November 22, 2011
*
******************************************************************************
*/
#define TYPE_SLICE ((haddr_t)0x10000LL)
static int
test_get_file_image_error_rejection(void)
{
const char *memb_name[H5FD_MEM_NTYPES];
char file_name[1024] = "\0";
void * image_ptr = NULL;
int data[100];
int i;
hid_t fapl_id = -1;
hid_t file_id = -1;
hid_t dset_id = -1;
hid_t space_id = -1;
herr_t err;
hsize_t dims[2];
ssize_t bytes_read;
ssize_t image_size;
hid_t memb_fapl[H5FD_MEM_NTYPES];
haddr_t memb_addr[H5FD_MEM_NTYPES];
H5FD_mem_t mt;
H5FD_mem_t memb_map[H5FD_MEM_NTYPES];
TESTING("H5Fget_file_image() error rejection");
/************************ Sub-Test #1 ********************************/
/* set up a test file, and try to get its image with a buffer that is
* too small. Call to H5Fget_file_image() should fail.
*
* Since we have already done the necessary setup, verify that
* H5Fget_file_image() will fail with:
*
* bad file id, or
*
* good id, but not a file id
*/
/* setup fapl -- driver type doesn't matter much, so make it stdio */
fapl_id = H5Pcreate(H5P_FILE_ACCESS);
VERIFY(fapl_id >= 0, "H5Pcreate(1) failed");
err = H5Pset_fapl_stdio(fapl_id);
VERIFY(err >= 0, "H5Pset_fapl_stdio() failed");
/* setup the file name */
h5_fixname(FILENAME2[6], fapl_id, file_name, sizeof(file_name));
VERIFY(HDstrlen(file_name)>0, "h5_fixname failed");
/* create the file */
file_id = H5Fcreate(file_name, 0, H5P_DEFAULT, fapl_id);
VERIFY(file_id >= 0, "H5Fcreate() failed.");
/* Set up data space for new new data set */
dims[0] = 10;
dims[1] = 10;
space_id = H5Screate_simple(2, dims, dims);
VERIFY(space_id >= 0, "H5Screate() failed");
/* Create a dataset */
dset_id = H5Dcreate2(file_id, "dset 0", H5T_NATIVE_INT, space_id,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset_id >=0, "H5Dcreate() failed");
/* write some data to the data set */
for (i = 0; i < 100; i++)
data[i] = i;
err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, (void *)data);
VERIFY(err >= 0, "H5Dwrite() failed.");
/* Flush the file */
err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
VERIFY(err >= 0, "H5Fflush failed");
/* get the size of the file */
image_size = H5Fget_file_image(file_id, NULL, (size_t)0);
VERIFY(image_size > 0, "H5Fget_file_image(1 -- test 1) failed.");
/* allocate a buffer of the appropriate size */
image_ptr = HDmalloc((size_t)image_size);
VERIFY(image_ptr != NULL, "HDmalloc(1) failed.");
/* load the image of the file into the buffer */
H5E_BEGIN_TRY {
bytes_read = H5Fget_file_image(file_id, image_ptr, (size_t)(image_size - 1));
} H5E_END_TRY;
VERIFY(bytes_read < 0, "H5Fget_file_image(2 -- test 1) succeeded.");
/* Call H5Fget_file_image() with good buffer and buffer size,
* but non-existant file_id. Should fail.
*/
H5E_BEGIN_TRY {
bytes_read = H5Fget_file_image((hid_t)0, image_ptr, (size_t)(image_size));
} H5E_END_TRY;
VERIFY(bytes_read < 0, "H5Fget_file_image(3 -- test 1) succeeded.");
/* Call H5Fget_file_image() with good buffer and buffer size,
* but a file_id of the wrong type. Should fail.
*/
H5E_BEGIN_TRY {
bytes_read = H5Fget_file_image(dset_id, image_ptr, (size_t)(image_size));
} H5E_END_TRY;
VERIFY(bytes_read < 0, "H5Fget_file_image(4 -- test 1) succeeded.");
/* Close dset and space */
err = H5Dclose(dset_id);
VERIFY(err >= 0, "H5Dclose failed");
err = H5Sclose(space_id);
VERIFY(err >= 0, "H5Sclose failed");
/* close the test file */
err = H5Fclose(file_id);
VERIFY(err == SUCCEED, "H5Fclose(file_id) failed.");
/* tidy up */
h5_clean_files(FILENAME2, fapl_id);
/* discard the image buffer if it exists */
if(image_ptr != NULL)
HDfree(image_ptr);
/************************** Test #2 **********************************/
/* set up a multi file driver test file, and try to get its image
* with H5Fget_file_image(). Attempt should fail.
*/
/* setup parameters for multi file driver */
for(mt = (H5FD_mem_t)0; mt < H5FD_MEM_NTYPES; mt = (H5FD_mem_t)(mt + 1)) {
memb_addr[mt] = HADDR_UNDEF;
memb_fapl[mt] = H5P_DEFAULT;
memb_map[mt] = H5FD_MEM_DRAW;
memb_name[mt] = NULL;
}
memb_map[H5FD_MEM_SUPER] = H5FD_MEM_SUPER;
memb_fapl[H5FD_MEM_SUPER] = H5P_DEFAULT;
memb_name[H5FD_MEM_SUPER] = "%s-s.h5";
memb_addr[H5FD_MEM_SUPER] = 0;
memb_map[H5FD_MEM_BTREE] = H5FD_MEM_BTREE;
memb_fapl[H5FD_MEM_BTREE] = H5P_DEFAULT;
memb_name[H5FD_MEM_BTREE] = "%s-b.h5";
memb_addr[H5FD_MEM_BTREE] = memb_addr[H5FD_MEM_SUPER] + TYPE_SLICE;
memb_map[H5FD_MEM_DRAW] = H5FD_MEM_DRAW;
memb_fapl[H5FD_MEM_DRAW] = H5P_DEFAULT;
memb_name[H5FD_MEM_DRAW] = "%s-r.h5";
memb_addr[H5FD_MEM_DRAW] = memb_addr[H5FD_MEM_BTREE] + TYPE_SLICE;
memb_map[H5FD_MEM_GHEAP] = H5FD_MEM_GHEAP;
memb_fapl[H5FD_MEM_GHEAP] = H5P_DEFAULT;
memb_name[H5FD_MEM_GHEAP] = "%s-g.h5";
memb_addr[H5FD_MEM_GHEAP] = memb_addr[H5FD_MEM_DRAW] + TYPE_SLICE;
memb_map[H5FD_MEM_LHEAP] = H5FD_MEM_LHEAP;
memb_fapl[H5FD_MEM_LHEAP] = H5P_DEFAULT;
memb_name[H5FD_MEM_LHEAP] = "%s-l.h5";
memb_addr[H5FD_MEM_LHEAP] = memb_addr[H5FD_MEM_GHEAP] + TYPE_SLICE;
memb_map[H5FD_MEM_OHDR] = H5FD_MEM_OHDR;
memb_fapl[H5FD_MEM_OHDR] = H5P_DEFAULT;
memb_name[H5FD_MEM_OHDR] = "%s-o.h5";
memb_addr[H5FD_MEM_OHDR] = memb_addr[H5FD_MEM_LHEAP] + TYPE_SLICE;
/* setup fapl */
fapl_id = H5Pcreate(H5P_FILE_ACCESS);
VERIFY(fapl_id >= 0, "H5Pcreate(2) failed");
/* setup the fapl for the multi file driver */
err = H5Pset_fapl_multi(fapl_id, memb_map, memb_fapl, memb_name,
memb_addr, FALSE);
VERIFY(err >= 0, "H5Pset_fapl_multi failed");
/* setup the file name */
h5_fixname(FILENAME2[4], fapl_id, file_name, sizeof(file_name));
VERIFY(HDstrlen(file_name)>0, "h5_fixname failed");
/* create the file */
file_id = H5Fcreate(file_name, 0, H5P_DEFAULT, fapl_id);
VERIFY(file_id >= 0, "H5Fcreate() failed.");
/* Set up data space for new new data set */
dims[0] = 10;
dims[1] = 10;
space_id = H5Screate_simple(2, dims, dims);
VERIFY(space_id >= 0, "H5Screate() failed");
/* Create a dataset */
dset_id = H5Dcreate2(file_id, "dset 0", H5T_NATIVE_INT, space_id,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset_id >=0, "H5Dcreate() failed");
/* write some data to the data set */
for (i = 0; i < 100; i++)
data[i] = i;
err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, (void *)data);
VERIFY(err >= 0, "H5Dwrite() failed.");
/* Flush the file */
err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
VERIFY(err >= 0, "H5Fflush failed");
/* attempt to get the size of the file -- should fail */
H5E_BEGIN_TRY {
image_size = H5Fget_file_image(file_id, NULL, (size_t)0);
} H5E_END_TRY;
VERIFY(image_size == -1, "H5Fget_file_image(5) succeeded.");
/* Close dset and space */
err = H5Dclose(dset_id);
VERIFY(err >= 0, "H5Dclose failed");
err = H5Sclose(space_id);
VERIFY(err >= 0, "H5Sclose failed");
/* close the test file */
err = H5Fclose(file_id);
VERIFY(err == SUCCEED, "H5Fclose(2) failed.");
/* tidy up */
h5_clean_files(FILENAME2, fapl_id);
/************************** Test #3 **********************************/
/* set up a split file driver test file, and try to get its image
* with H5Fget_file_image(). Attempt should fail.
*/
/* create fapl */
fapl_id = H5Pcreate(H5P_FILE_ACCESS);
VERIFY(fapl_id >= 0, "H5Pcreate(3) failed");
/* setup the fapl for the split file driver */
err = H5Pset_fapl_split(fapl_id, "-m.h5", H5P_DEFAULT, "-r.h5", H5P_DEFAULT);
VERIFY(err >= 0, "H5Pset_fapl_split failed");
/* setup the file name */
h5_fixname(FILENAME2[5], fapl_id, file_name, sizeof(file_name));
VERIFY(HDstrlen(file_name)>0, "h5_fixname failed");
/* create the file */
file_id = H5Fcreate(file_name, 0, H5P_DEFAULT, fapl_id);
VERIFY(file_id >= 0, "H5Fcreate() failed.");
/* Set up data space for new new data set */
dims[0] = 10;
dims[1] = 10;
space_id = H5Screate_simple(2, dims, dims);
VERIFY(space_id >= 0, "H5Screate() failed");
/* Create a dataset */
dset_id = H5Dcreate2(file_id, "dset 0", H5T_NATIVE_INT, space_id,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset_id >=0, "H5Dcreate() failed");
/* write some data to the data set */
for (i = 0; i < 100; i++)
data[i] = i;
err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, (void *)data);
VERIFY(err >= 0, "H5Dwrite() failed.");
/* Flush the file */
err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
VERIFY(err >= 0, "H5Fflush failed");
/* attempt to get the size of the file -- should fail */
H5E_BEGIN_TRY {
image_size = H5Fget_file_image(file_id, NULL, (size_t)0);
} H5E_END_TRY;
VERIFY(image_size == -1, "H5Fget_file_image(6) succeeded.");
/* Close dset and space */
err = H5Dclose(dset_id);
VERIFY(err >= 0, "H5Dclose failed");
err = H5Sclose(space_id);
VERIFY(err >= 0, "H5Sclose failed");
/* close the test file */
err = H5Fclose(file_id);
VERIFY(err == SUCCEED, "H5Fclose(2) failed.");
/* tidy up */
h5_clean_files(FILENAME2, fapl_id);
/************************** Test #4 **********************************/
/* set up a family file driver test file, and try to get its image
* with H5Fget_file_image(). Attempt should fail.
*/
/* create fapl */
fapl_id = H5Pcreate(H5P_FILE_ACCESS);
VERIFY(fapl_id >= 0, "H5Pcreate(3) failed");
err = H5Pset_fapl_family(fapl_id, (hsize_t)FAMILY_SIZE, H5P_DEFAULT);
VERIFY(err >= 0, "H5Pset_fapl_family failed");
h5_fixname(FILENAME2[3], fapl_id, file_name, sizeof(file_name));
VERIFY(HDstrlen(file_name)>0, "h5_fixname failed");
/* create the file */
file_id = H5Fcreate(file_name, 0, H5P_DEFAULT, fapl_id);
VERIFY(file_id >= 0, "H5Fcreate() failed.");
/* Set up data space for new new data set */
dims[0] = 10;
dims[1] = 10;
space_id = H5Screate_simple(2, dims, dims);
VERIFY(space_id >= 0, "H5Screate() failed");
/* Create a dataset */
dset_id = H5Dcreate2(file_id, "dset 0", H5T_NATIVE_INT, space_id,
H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
VERIFY(dset_id >=0, "H5Dcreate() failed");
/* write some data to the data set */
for (i = 0; i < 100; i++)
data[i] = i;
err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, (void *)data);
VERIFY(err >= 0, "H5Dwrite() failed.");
/* Flush the file */
err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
VERIFY(err >= 0, "H5Fflush failed");
/* attempt to get the size of the file -- should fail */
H5E_BEGIN_TRY {
image_size = H5Fget_file_image(file_id, NULL, (size_t)0);
} H5E_END_TRY;
VERIFY(image_size == -1, "H5Fget_file_image(7) succeeded.");
/* Close dset and space */
err = H5Dclose(dset_id);
VERIFY(err >= 0, "H5Dclose failed");
err = H5Sclose(space_id);
VERIFY(err >= 0, "H5Sclose failed");
/* close the test file */
err = H5Fclose(file_id);
VERIFY(err == SUCCEED, "H5Fclose(2) failed.");
/* tidy up */
h5_clean_files(FILENAME2, fapl_id);
PASSED();
return 0;
error:
return 1;
} /* test_get_file_image_error_rejection() */
/*
* Modifications:
* Add testing for file image with or without user block in the file.
*/
int
main(void)
{
int errors = 0;
hid_t fapl;
unsigned user;
h5_reset();
HDprintf("Testing File Image Functionality.\n");
errors += test_properties();
errors += test_callbacks();
errors += test_core();
/* Perform tests with/without user block */
for(user = FALSE; user <= TRUE; user++) {
/* test H5Fget_file_image() with sec2 driver */
fapl = H5Pcreate(H5P_FILE_ACCESS);
if(H5Pset_fapl_sec2(fapl) < 0)
errors++;
else
errors += test_get_file_image("H5Fget_file_image() with sec2 driver",
0, fapl, user);
/* test H5Fget_file_image() with stdio driver */
fapl = H5Pcreate(H5P_FILE_ACCESS);
if(H5Pset_fapl_stdio(fapl) < 0)
errors++;
else
errors += test_get_file_image("H5Fget_file_image() with stdio driver",
1, fapl, user);
/* test H5Fget_file_image() with core driver */
fapl = H5Pcreate(H5P_FILE_ACCESS);
if(H5Pset_fapl_core(fapl, (size_t)(64 *1024), TRUE) < 0)
errors++;
else
errors += test_get_file_image("H5Fget_file_image() with core driver",
2, fapl, user);
} /* end for */
#if 0
/* at present, H5Fget_file_image() rejects files opened with the
* family file driver, due to the addition of a driver info message
* in the super block. This message prevents the image being opened
* with any driver other than the family file driver, which sort of
* defeats the purpose of the get file image operation.
*
* While this issues is quite fixable, we don't have time or resources
* for this right now. Once we do, the following code should be
* suitable for testing the fix.
*/
/* test H5Fget_file_image() with family file driver */
fapl = H5Pcreate(H5P_FILE_ACCESS);
if(H5Pset_fapl_family(fapl, (hsize_t)FAMILY_SIZE, H5P_DEFAULT) < 0)
errors++;
else
errors += test_get_file_image("H5Fget_file_image() with family driver",
3, fapl);
#endif
errors += test_get_file_image_error_rejection();
/* Restore the default error handler (set in h5_reset()) */
h5_restore_err();
if(errors) {
HDprintf("***** %d File Image TEST%s FAILED! *****\n",
errors, errors > 1 ? "S" : "");
return 1;
}
HDprintf("All File Image tests passed.\n");
return 0;
}
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