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/* Change access and modification times of open file. Linux version.
Copyright (C) 2007-2018 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 <string.h>
#include <time.h>
#include <sysdep.h>
#include <y2038-support.h>
/* Change the access time of the file associated with FD to TSP[0] and
the modification time of FILE to TSP[1].
Starting with 2.6.22 the Linux kernel has the utimensat syscall which
can be used to implement futimens. */
int
futimens (int fd, const struct timespec tsp[2])
{
if (fd < 0)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EBADF);
/* Avoid implicit array coercion in syscall macros. */
return INLINE_SYSCALL (utimensat, 4, fd, NULL, &tsp[0], 0);
}
/* 64-bit time version */
int
__futimens64 (int fd, const struct __timespec64 tsp[2])
{
struct timespec ts32[2];
/* Only try and use this syscall if defined by kernel */
#ifdef __NR_utimesat_time64
struct __timespec64 ts64[2];
int res;
#endif
if (fd < 0)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EBADF);
/* Only try and use this syscall if defined by kernel */
#ifdef __NR_utimesat_time64
if (__y2038_linux_support > 0)
{
ts64[0].tv_sec = tsp[0].tv_sec;
ts64[0].tv_nsec = tsp[0].tv_nsec;
ts64[0].tv_pad = 0;
ts64[1].tv_sec = tsp[1].tv_sec;
ts64[1].tv_nsec = tsp[1].tv_nsec;
ts64[1].tv_pad = 0;
res = INLINE_SYSCALL (utimensat_time64, 4, fd, NULL, &ts64[0], 0);
if (res == 0 || errno != ENOSYS)
return res;
__y2038_linux_support = -1;
}
#endif
if (! timespec64_to_timespec(&tsp[0], &ts32[0]))
{
__set_errno(EOVERFLOW);
return -1;
}
if (! timespec64_to_timespec(&tsp[1], &ts32[1]))
{
__set_errno(EOVERFLOW);
return -1;
}
return INLINE_SYSCALL (utimensat, 4, fd, NULL, &ts32[0], 0);
}
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