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
|
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <signal.h>
#include <pthreadP.h>
#include <sysdep.h>
int
pthread_sigmask (how, newmask, oldmask)
int how;
const sigset_t *newmask;
sigset_t *oldmask;
{
sigset_t local_newmask;
/* The only thing we have to make sure here is that SIGCANCEL is not
blocked. */
if (newmask != NULL
&& __builtin_expect (__sigismember (newmask, SIGCANCEL), 0))
{
local_newmask = *newmask;
__sigdelset (&local_newmask, SIGCANCEL);
newmask = &local_newmask;
}
#ifdef INTERNAL_SYSCALL
/* We know that realtime signals are available if NPTL is used. */
INTERNAL_SYSCALL_DECL (err);
int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask,
oldmask, _NSIG / 8);
return (INTERNAL_SYSCALL_ERROR_P (result, err)
? INTERNAL_SYSCALL_ERRNO (result, err)
: 0);
#else
return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0;
#endif
}
|
