1/* Copyright (C) 2007-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <signal.h>
20#include <unistd.h>
21#include <sys/epoll.h>
22
23#include <sysdep-cancel.h>
24#include <sys/syscall.h>
25
26#ifdef __NR_epoll_pwait
27
28/* Wait for events on an epoll instance "epfd". Returns the number of
29 triggered events returned in "events" buffer. Or -1 in case of
30 error with the "errno" variable set to the specific error code. The
31 "events" parameter is a buffer that will contain triggered
32 events. The "maxevents" is the maximum number of events to be
33 returned ( usually size of "events" ). The "timeout" parameter
34 specifies the maximum wait time in milliseconds (-1 == infinite).
35 The thread's signal mask is temporarily and atomically replaced with
36 the one provided as parameter. */
37
38int epoll_pwait (int epfd, struct epoll_event *events,
39 int maxevents, int timeout,
40 const sigset_t *set)
41{
42 return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents,
43 timeout, set, _NSIG / 8);
44}
45
46#else
47
48int epoll_pwait (int epfd, struct epoll_event *events,
49 int maxevents, int timeout,
50 const sigset_t *set)
51{
52 __set_errno (ENOSYS);
53 return -1;
54}
55stub_warning (epoll_pwait)
56
57#endif
58
59libc_hidden_def (epoll_pwait)
60