mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/* Common f{truncate} tests definitions.
|
|
Copyright (C) 2016-2019 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 <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
|
|
static void do_prepare (void);
|
|
#define PREPARE(argc, argv) do_prepare ()
|
|
static int do_test (void);
|
|
#define TEST_FUNCTION do_test ()
|
|
|
|
#include <test-skeleton.c>
|
|
|
|
static char *temp_filename;
|
|
static int temp_fd;
|
|
|
|
static void
|
|
do_prepare (void)
|
|
{
|
|
temp_fd = create_temp_file ("tst-trucate.", &temp_filename);
|
|
if (temp_fd == -1)
|
|
{
|
|
printf ("cannot create temporary file: %m\n");
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
#define FAIL(str) \
|
|
do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
|
|
|
|
static int
|
|
do_test_with_offset (off_t offset)
|
|
{
|
|
struct stat st;
|
|
char buf[1000];
|
|
|
|
memset (buf, 0xcf, sizeof (buf));
|
|
|
|
if (pwrite (temp_fd, buf, sizeof (buf), offset) != sizeof (buf))
|
|
FAIL ("write failed");
|
|
if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + sizeof (buf)))
|
|
FAIL ("initial size wrong");
|
|
|
|
if (ftruncate (temp_fd, offset + 800) < 0)
|
|
FAIL ("size reduction with ftruncate failed");
|
|
if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 800))
|
|
FAIL ("size after reduction with ftruncate is incorrect");
|
|
|
|
/* The following test covers more than POSIX. POSIX does not require
|
|
that ftruncate() can increase the file size. But we are testing
|
|
Unix systems. */
|
|
if (ftruncate (temp_fd, offset + 1200) < 0)
|
|
FAIL ("size increate with ftruncate failed");
|
|
if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 1200))
|
|
FAIL ("size after increase is incorrect");
|
|
|
|
if (truncate (temp_filename, offset + 800) < 0)
|
|
FAIL ("size reduction with truncate failed");
|
|
if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 800))
|
|
FAIL ("size after reduction with truncate incorrect");
|
|
|
|
/* The following test covers more than POSIX. POSIX does not require
|
|
that truncate() can increase the file size. But we are testing
|
|
Unix systems. */
|
|
if (truncate (temp_filename, (offset + 1200)) < 0)
|
|
FAIL ("size increase with truncate failed");
|
|
if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 1200))
|
|
FAIL ("size increase with truncate is incorrect");
|
|
|
|
return 0;
|
|
}
|