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 | #ifdef __NR_rt_sigqueueinfo |
30 | |
31 | /* Return any pending signal or wait for one for the given time. */ |
32 | int |
33 | __gai_sigqueue (int sig, const union sigval val, pid_t caller_pid) |
34 | { |
35 | siginfo_t info; |
36 | |
37 | /* First, clear the siginfo_t structure, so that we don't pass our |
38 | stack content to other tasks. */ |
39 | memset (&info, 0, sizeof (siginfo_t)); |
40 | /* We must pass the information about the data in a siginfo_t value. */ |
41 | info.si_signo = sig; |
42 | info.si_code = SI_ASYNCNL; |
43 | info.si_pid = caller_pid; |
44 | info.si_uid = __getuid (); |
45 | info.si_value = val; |
46 | |
47 | return INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid, sig, &info); |
48 | } |
49 | #else |
50 | # include <resolv/gai_sigqueue.c> |
51 | #endif |
52 | |