mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/* Basic fallocate test (no specific flags is checked).
|
|
Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#include <support/support.h>
|
|
#include <support/check.h>
|
|
#include <support/temp_file.h>
|
|
|
|
#define XSTR(s) STR(S)
|
|
#define STR(s) #s
|
|
|
|
static char *temp_filename;
|
|
static int temp_fd;
|
|
|
|
static void
|
|
do_prepare (int argc, char **argv)
|
|
{
|
|
temp_fd = create_temp_file ("tst-fallocate.", &temp_filename);
|
|
if (temp_fd == -1)
|
|
FAIL_EXIT1 ("cannot create temporary file: %m");
|
|
}
|
|
#define PREPARE do_prepare
|
|
|
|
static int
|
|
do_test_with_offset (off_t offset)
|
|
{
|
|
int ret;
|
|
struct stat finfo;
|
|
#define BLK_SIZE 1024
|
|
char bwrite[BLK_SIZE] = { 0xf0 };
|
|
char bread[BLK_SIZE];
|
|
|
|
/* It tries to fallocate 1024 bytes from 'offset' and then write 1024 bytes.
|
|
After both operation rewind the file descriptor and read 1024 bytes
|
|
and check if both buffer have the same contents. */
|
|
ret = fallocate (temp_fd, 0, offset, BLK_SIZE);
|
|
if (ret == -1)
|
|
{
|
|
/* fallocate might not be fully supported by underlying filesystem (for
|
|
instance some NFS versions). */
|
|
if (errno == EOPNOTSUPP)
|
|
FAIL_EXIT (77, "fallocate not supported");
|
|
FAIL_EXIT1 ("fallocate failed");
|
|
}
|
|
|
|
ret = fstat (temp_fd, &finfo);
|
|
if (ret == -1)
|
|
FAIL_EXIT1 ("fstat failed");
|
|
|
|
if (finfo.st_size < (offset + BLK_SIZE))
|
|
FAIL_EXIT1 ("size of first fallocate less than expected (%llu)",
|
|
(long long unsigned int)offset + BLK_SIZE);
|
|
|
|
if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
|
|
FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
|
|
|
|
if (write (temp_fd, bwrite, BLK_SIZE) != BLK_SIZE)
|
|
FAIL_EXIT1 ("fail trying to write " XSTR (BLK_SIZE) " bytes");
|
|
|
|
if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
|
|
FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
|
|
|
|
if (read (temp_fd, bread, BLK_SIZE) != BLK_SIZE)
|
|
FAIL_EXIT1 ("fail trying to read " XSTR (BLK_SIZE) " bytes");
|
|
|
|
if (memcmp (bwrite, bread, BLK_SIZE) != 0)
|
|
FAIL_EXIT1 ("buffer written different than buffer readed");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This function is defined by the individual tests. */
|
|
static int do_test (void);
|
|
|
|
#include <support/test-driver.c>
|