1 /* sched_rr_get_interval -- get the scheduler's SCHED_RR policy time interval.
2 Copyright (C) 2020-2022 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
25 int
__sched_rr_get_interval64(pid_t pid,struct __timespec64 * tp)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
libc_hidden_def(__sched_rr_get_interval64)45 libc_hidden_def (__sched_rr_get_interval64)
46
47 int
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
69 strong_alias (__sched_rr_get_interval, sched_rr_get_interval)
70