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/* Change access and modification times of open file. Linux version.
Copyright (C) 2007-2022 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)
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