1/* Copyright (C) 1997-2021 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 <https://www.gnu.org/licenses/>. */
17
18#include <signal.h>
19#include <sysdep-cancel.h>
20#include <errno.h>
21
22int
23__sigwait (const sigset_t *set, int *sig)
24{
25 siginfo_t si;
26 int ret;
27 do
28 ret = __sigtimedwait (set, &si, 0);
29 /* Applications do not expect sigwait to return with EINTR, and the
30 error code is not specified by POSIX. */
31 while (ret < 0 && errno == EINTR);
32 if (ret < 0)
33 return errno;
34 *sig = si.si_signo;
35 return 0;
36}
37libc_hidden_def (__sigwait)
38weak_alias (__sigwait, sigwait)
39strong_alias (__sigwait, __libc_sigwait)
40