1/* Copyright (C) 1991-2020 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 <stddef.h>
19#include <setjmpP.h>
20#include <signal.h>
21
22
23/* Set the signal mask to the one specified in ENV, and jump
24 to the position specified in ENV, causing the setjmp
25 call there to return VAL, or 1 if VAL is 0. */
26void
27__libc_siglongjmp (sigjmp_buf env, int val)
28{
29 /* Perform any cleanups needed by the frames being unwound. */
30 _longjmp_unwind (env, val);
31
32 if (env[0].__mask_was_saved)
33 /* Restore the saved signal mask. */
34 (void) __sigprocmask (SIG_SETMASK,
35 (sigset_t *) &env[0].__saved_mask,
36 (sigset_t *) NULL);
37
38 /* Call the machine-dependent function to restore machine state. */
39 __longjmp (env[0].__jmpbuf, val ?: 1);
40}
41
42#ifndef __libc_siglongjmp
43# ifndef __libc_longjmp
44/* __libc_longjmp is a private interface for cancellation implementation
45 in libpthread. */
46strong_alias (__libc_siglongjmp, __libc_longjmp)
47# endif
48weak_alias (__libc_siglongjmp, _longjmp)
49weak_alias (__libc_siglongjmp, longjmp)
50weak_alias (__libc_siglongjmp, siglongjmp)
51#endif
52