1/* timerfd_settime -- start or stop the timer referred to by file descriptor.
2 Copyright (C) 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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 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; see the file COPYING.LIB. If
17 not, see <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <stdlib.h>
21#include <time.h>
22#include <sysdep.h>
23#include <kernel-features.h>
24
25int
26__timerfd_settime64 (int fd, int flags, const struct __itimerspec64 *value,
27 struct __itimerspec64 *ovalue)
28{
29#ifdef __ASSUME_TIME64_SYSCALLS
30# ifndef __NR_timerfd_settime64
31# define __NR_timerfd_settime64 __NR_timerfd_settime
32# endif
33 return INLINE_SYSCALL_CALL (timerfd_settime64, fd, flags, value, ovalue);
34#else
35# ifdef __NR_timerfd_settime64
36 int ret = INLINE_SYSCALL_CALL (timerfd_settime64, fd, flags, value, ovalue);
37 if (ret == 0 || errno != ENOSYS)
38 return ret;
39# endif
40 struct itimerspec its32, oits32;
41
42 if (! in_time_t_range ((value->it_value).tv_sec)
43 || ! in_time_t_range ((value->it_interval).tv_sec))
44 {
45 __set_errno (EOVERFLOW);
46 return -1;
47 }
48
49 its32.it_interval = valid_timespec64_to_timespec (value->it_interval);
50 its32.it_value = valid_timespec64_to_timespec (value->it_value);
51
52 int retval = INLINE_SYSCALL_CALL (timerfd_settime, fd, flags,
53 &its32, ovalue ? &oits32 : NULL);
54 if (retval == 0 && ovalue)
55 {
56 ovalue->it_interval = valid_timespec_to_timespec64 (oits32.it_interval);
57 ovalue->it_value = valid_timespec_to_timespec64 (oits32.it_value);
58 }
59
60 return retval;
61#endif
62}
63
64#if __TIMESIZE != 64
65libc_hidden_def (__timerfd_settime64)
66
67int
68__timerfd_settime (int fd, int flags, const struct itimerspec *value,
69 struct itimerspec *ovalue)
70{
71 struct __itimerspec64 its64, oits64;
72 int retval;
73
74 its64.it_interval = valid_timespec_to_timespec64 (value->it_interval);
75 its64.it_value = valid_timespec_to_timespec64 (value->it_value);
76
77 retval = __timerfd_settime64 (fd, flags, &its64, ovalue ? &oits64 : NULL);
78 if (retval == 0 && ovalue)
79 {
80 ovalue->it_interval = valid_timespec64_to_timespec (oits64.it_interval);
81 ovalue->it_value = valid_timespec64_to_timespec (oits64.it_value);
82 }
83
84 return retval;
85}
86#endif
87strong_alias (__timerfd_settime, timerfd_settime)
88