1 | /* futimes -- change access and modification times of open file. Linux version. |
2 | Copyright (C) 2002-2020 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <sysdep.h> |
21 | #include <string.h> |
22 | #include <time.h> |
23 | #include <utime.h> |
24 | #include <sys/time.h> |
25 | #include <_itoa.h> |
26 | #include <fcntl.h> |
27 | |
28 | |
29 | /* Change the access time of the file associated with FD to TVP[0] and |
30 | the modification time of FILE to TVP[1]. |
31 | |
32 | Starting with 2.6.22 the Linux kernel has the utimensat syscall which |
33 | can be used to implement futimes. */ |
34 | int |
35 | __futimes (int fd, const struct timeval tvp[2]) |
36 | { |
37 | /* The utimensat system call expects timespec not timeval. */ |
38 | struct timespec ts[2]; |
39 | if (tvp != NULL) |
40 | { |
41 | if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000 |
42 | || tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000) |
43 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
44 | |
45 | TIMEVAL_TO_TIMESPEC (&tvp[0], &ts[0]); |
46 | TIMEVAL_TO_TIMESPEC (&tvp[1], &ts[1]); |
47 | } |
48 | |
49 | return INLINE_SYSCALL (utimensat, 4, fd, NULL, tvp ? &ts : NULL, 0); |
50 | } |
51 | weak_alias (__futimes, futimes) |
52 | |