1/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <signal.h>
20#include <sysdep.h>
21#include <errno.h>
22#include <sys/types.h>
23#include <unistd.h>
24#include <internal-signals.h>
25
26int
27raise (int sig)
28{
29 /* rt_sigprocmask may fail if:
30
31 1. sigsetsize != sizeof (sigset_t) (EINVAL)
32 2. a failure in copy from/to user space (EFAULT)
33 3. an invalid 'how' operation (EINVAL)
34
35 The first case is already handle in glibc syscall call by using the arch
36 defined _NSIG. Second case is handled by using a stack allocated mask.
37 The last one should be handled by the block/unblock functions. */
38
39 sigset_t set;
40 __libc_signal_block_app (&set);
41
42 pid_t pid = INTERNAL_SYSCALL_CALL (getpid);
43 pid_t tid = INTERNAL_SYSCALL_CALL (gettid);
44
45 int ret = INLINE_SYSCALL_CALL (tgkill, pid, tid, sig);
46
47 __libc_signal_restore_set (&set);
48
49 return ret;
50}
51libc_hidden_def (raise)
52weak_alias (raise, gsignal)
53