mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* Change access and modification times of open file. Linux version.
|
|
Copyright (C) 2007-2024 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 <errno.h>
|
|
#include <sys/stat.h>
|
|
#include <sysdep.h>
|
|
#include <time.h>
|
|
#include <kernel-features.h>
|
|
|
|
/* Helper function defined for easy reusage of the code which calls utimensat
|
|
and utimensat_time64 syscall. */
|
|
int
|
|
__utimensat64_helper (int fd, const char *file,
|
|
const struct __timespec64 tsp64[2], int flags)
|
|
{
|
|
#ifndef __NR_utimensat_time64
|
|
# define __NR_utimensat_time64 __NR_utimensat
|
|
#endif
|
|
|
|
#ifdef __ASSUME_TIME64_SYSCALLS
|
|
return INLINE_SYSCALL_CALL (utimensat_time64, fd, file, &tsp64[0], flags);
|
|
#else
|
|
/* For UTIME_NOW and UTIME_OMIT the value of tv_sec field is ignored. */
|
|
# define TS_SPECIAL(ts) \
|
|
((ts).tv_nsec == UTIME_NOW || (ts).tv_nsec == UTIME_OMIT)
|
|
|
|
bool need_time64 = tsp64 != NULL
|
|
&& ((!TS_SPECIAL (tsp64[0])
|
|
&& !in_int32_t_range (tsp64[0].tv_sec))
|
|
|| (!TS_SPECIAL (tsp64[1])
|
|
&& !in_int32_t_range (tsp64[1].tv_sec)));
|
|
if (need_time64)
|
|
{
|
|
int r = INLINE_SYSCALL_CALL (utimensat_time64, fd, file, &tsp64[0],
|
|
flags);
|
|
if (r == 0 || errno != ENOSYS)
|
|
return r;
|
|
__set_errno (EOVERFLOW);
|
|
return -1;
|
|
}
|
|
|
|
struct timespec tsp32[2], *ptsp32 = NULL;
|
|
if (tsp64)
|
|
{
|
|
tsp32[0] = valid_timespec64_to_timespec (tsp64[0]);
|
|
tsp32[1] = valid_timespec64_to_timespec (tsp64[1]);
|
|
ptsp32 = tsp32;
|
|
}
|
|
|
|
return INLINE_SYSCALL_CALL (utimensat, fd, file, ptsp32, flags);
|
|
#endif
|
|
}
|
|
libc_hidden_def (__utimensat64_helper)
|
|
|
|
/* Change the access time of FILE to TSP[0] and
|
|
the modification time of FILE to TSP[1].
|
|
|
|
Starting with 2.6.22 the Linux kernel has the utimensat syscall. */
|
|
int
|
|
__utimensat64 (int fd, const char *file, const struct __timespec64 tsp64[2],
|
|
int flags)
|
|
{
|
|
if (file == NULL)
|
|
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
|
|
|
|
return __utimensat64_helper (fd, file, &tsp64[0], flags);
|
|
}
|
|
|
|
#if __TIMESIZE != 64
|
|
libc_hidden_def (__utimensat64)
|
|
|
|
int
|
|
__utimensat (int fd, const char *file, const struct timespec tsp[2],
|
|
int flags)
|
|
{
|
|
struct __timespec64 tsp64[2];
|
|
if (tsp)
|
|
{
|
|
tsp64[0] = valid_timespec_to_timespec64 (tsp[0]);
|
|
tsp64[1] = valid_timespec_to_timespec64 (tsp[1]);
|
|
}
|
|
|
|
return __utimensat64 (fd, file, tsp ? &tsp64[0] : NULL, flags);
|
|
}
|
|
#endif
|
|
weak_alias (__utimensat, utimensat)
|