1/* sched_rr_get_interval -- get the scheduler's SCHED_RR policy time interval.
2 Copyright (C) 2020-2023 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__sched_rr_get_interval64 (pid_t pid, struct __timespec64 *tp)
27{
28#ifndef __NR_sched_rr_get_interval_time64
29# define __NR_sched_rr_get_interval_time64 __NR_sched_rr_get_interval
30#endif
31 int ret = INLINE_SYSCALL_CALL (sched_rr_get_interval_time64, pid, tp);
32#ifndef __ASSUME_TIME64_SYSCALLS
33 if (ret == 0 || errno != ENOSYS)
34 return ret;
35
36 struct timespec tp32;
37 ret = INLINE_SYSCALL_CALL (sched_rr_get_interval, pid, &tp32);
38 if (ret == 0)
39 *tp = valid_timespec_to_timespec64 (tp32);
40#endif
41 return ret;
42}
43
44#if __TIMESIZE != 64
45libc_hidden_def (__sched_rr_get_interval64)
46
47int
48__sched_rr_get_interval (pid_t pid, struct timespec *tp)
49{
50 int ret;
51 struct __timespec64 tp64;
52
53 ret = __sched_rr_get_interval64 (pid, &tp64);
54
55 if (ret == 0)
56 {
57 if (! in_time_t_range (tp64.tv_sec))
58 {
59 __set_errno (EOVERFLOW);
60 return -1;
61 }
62
63 *tp = valid_timespec64_to_timespec (tp64);
64 }
65
66 return ret;
67}
68#endif
69strong_alias (__sched_rr_get_interval, sched_rr_get_interval)
70