1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <time.h>
#include <sys/poll.h>
#include <sysdep-cancel.h>
#include <kernel-features.h>
int
__ppoll64 (struct pollfd *fds, nfds_t nfds, const struct __timespec64 *timeout,
const sigset_t *sigmask)
{
/* The Linux kernel can in some situations update the timeout value.
We do not want that so use a local variable. */
struct __timespec64 tval;
if (timeout != NULL)
{
tval = *timeout;
timeout = &tval;
}
#ifdef __ASSUME_TIME64_SYSCALLS
# ifndef __NR_ppoll_time64
# define __NR_ppoll_time64 __NR_ppoll
# endif
return SYSCALL_CANCEL (ppoll_time64, fds, nfds, timeout, sigmask, _NSIG / 8);
#else
# ifdef __NR_ppoll_time64
int ret = SYSCALL_CANCEL (ppoll_time64, fds, nfds, timeout, sigmask,
_NSIG / 8);
if (ret >= 0 || errno != ENOSYS)
return ret;
# endif
struct timespec ts32;
if (timeout)
{
if (! in_time_t_range (timeout->tv_sec))
{
__set_errno (EOVERFLOW);
return -1;
}
ts32 = valid_timespec64_to_timespec (*timeout);
}
return SYSCALL_CANCEL (ppoll, fds, nfds, timeout ? &ts32 : NULL, sigmask,
_NSIG / 8);
#endif
}
#if __TIMESIZE != 64
int
__ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
const sigset_t *sigmask)
{
struct __timespec64 ts64;
if (timeout)
ts64 = valid_timespec_to_timespec64 (*timeout);
return __ppoll64 (fds, nfds, timeout ? &ts64 : NULL, sigmask);
}
#endif
strong_alias (__ppoll, ppoll)
libc_hidden_def (ppoll)
|
