1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <kernel-features.h>
#include <pthreadP.h>
/* Get and/or change the set of blocked signals. */
int
#ifdef BUILD_AS_pthread_sigmask
pthread_sigmask(int how, const sigset_t *set, sigset_t *oset)
#else
__sigprocmask (int how, const sigset_t *set, sigset_t *oset)
#endif
{
sigset_t local_newmask;
int rv;
/* The only thing we have to make sure here is that SIGCANCEL and
SIGSETXID are not blocked. */
if (set != NULL
&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
))
{
local_newmask = *set;
__sigdelset (&local_newmask, SIGCANCEL);
__sigdelset (&local_newmask, SIGSETXID);
set = &local_newmask;
}
rv = INLINE_SYSCALL (sigprocmask, 3, how, set, oset);
#ifdef BUILD_AS_pthread_sigmask
return rv;
}
#else
if (rv)
{
errno = rv;
return -1;
}
return 0;
}
weak_alias (__sigprocmask, sigprocmask)
#endif
|
