1/* Copyright (C) 2001-2020 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 <errno.h>
19#include <netdb.h>
20#include <signal.h>
21#include <string.h>
22#include <unistd.h>
23
24#include <sysdep.h>
25#include <sys/syscall.h>
26
27#include "gai_misc.h"
28
29/* Return any pending signal or wait for one for the given time. */
30int
31__gai_sigqueue (int sig, const union sigval val, pid_t caller_pid)
32{
33 siginfo_t info;
34
35 /* First, clear the siginfo_t structure, so that we don't pass our
36 stack content to other tasks. */
37 memset (&info, 0, sizeof (siginfo_t));
38 /* We must pass the information about the data in a siginfo_t value. */
39 info.si_signo = sig;
40 info.si_code = SI_ASYNCNL;
41 info.si_pid = caller_pid;
42 info.si_uid = __getuid ();
43 info.si_value = val;
44
45 return INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid, sig, &info);
46}
47