/* Seeks a specific offset in a specific input file
* Returns the offset if successful or -1 on error
*/
off64_t mount_handle_seek_offset(
mount_handle_t *mount_handle,
int input_file_index,
off64_t offset,
int whence,
libcerror_error_t **error )
{
libvhdi_file_t *input_file = NULL;
static char *function = "mount_handle_seek_offset";
if( mount_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid mount handle.",
function );
return( -1 );
}
if( libcdata_array_get_entry_by_index(
mount_handle->input_files_array,
input_file_index,
(intptr_t **) &input_file,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve input file: %d.",
function,
input_file_index );
return( -1 );
}
offset = libvhdi_file_seek_offset(
input_file,
offset,
whence,
error );
if( offset == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek offset in input file: %d.",
function,
input_file_index );
return( -1 );
}
return( offset );
}
/* Tests libvhdi_file_seek_offset
* Returns 1 if successful, 0 if not or -1 on error
*/
int vhdi_test_seek_offset(
libvhdi_file_t *file,
off64_t input_offset,
int input_whence,
off64_t expected_offset )
{
libvhdi_error_t *error = NULL;
off64_t result_offset = 0;
int result = 0;
if( file == NULL )
{
return( -1 );
}
result_offset = libvhdi_file_seek_offset(
file,
input_offset,
input_whence,
&error );
if( expected_offset != result_offset )
{
fprintf(
stderr,
"Unexpected result offset: %" PRIi64 "\n",
result_offset );
}
else
{
result = 1;
}
if( error != NULL )
{
if( result != 1 )
{
libvhdi_error_backtrace_fprint(
error,
stderr );
}
libvhdi_error_free(
&error );
}
return( result );
}
