mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 14:20:07 +00:00
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/* Check if path supports 64-bit time interfaces.
|
|
Copyright (C) 2021-2024 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
#include <sys/stat.h>
|
|
#ifdef __linux__
|
|
#include <sysdep.h>
|
|
#endif
|
|
|
|
#ifdef __linux__
|
|
static int
|
|
utimesat_call (const char *path, const struct __timespec64 tsp[2])
|
|
{
|
|
# ifndef __NR_utimensat_time64
|
|
# define __NR_utimensat_time64 __NR_utimensat
|
|
# endif
|
|
return syscall (__NR_utimensat_time64, AT_FDCWD, path, &tsp[0], 0);
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
support_path_support_time64_value (const char *path, int64_t at, int64_t mt)
|
|
{
|
|
#ifdef __linux__
|
|
/* Obtain the original timestamps to restore at the end. */
|
|
struct statx ostx;
|
|
TEST_VERIFY_EXIT (statx (AT_FDCWD, path, 0, STATX_BASIC_STATS, &ostx) == 0);
|
|
|
|
const struct __timespec64 tsp[] = { { at, 0 }, { mt, 0 } };
|
|
|
|
/* Return is kernel does not support __NR_utimensat_time64. */
|
|
if (utimesat_call (path, tsp) == -1)
|
|
return false;
|
|
|
|
/* Verify if the last access and last modification time match the ones
|
|
obtained with statx. */
|
|
struct statx stx;
|
|
TEST_VERIFY_EXIT (statx (AT_FDCWD, path, 0, STATX_BASIC_STATS, &stx) == 0);
|
|
|
|
bool support = stx.stx_atime.tv_sec == tsp[0].tv_sec
|
|
&& stx.stx_mtime.tv_sec == tsp[1].tv_sec;
|
|
|
|
/* Reset to original timestamps. */
|
|
const struct __timespec64 otsp[] =
|
|
{
|
|
{ ostx.stx_atime.tv_sec, ostx.stx_atime.tv_nsec },
|
|
{ ostx.stx_mtime.tv_sec, ostx.stx_mtime.tv_nsec },
|
|
};
|
|
TEST_VERIFY_EXIT (utimesat_call (path, otsp) == 0);
|
|
|
|
return support;
|
|
#else
|
|
return true;
|
|
#endif
|
|
}
|