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
|
/* Copyright (C) 1991, 1996 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <errno.h>
#include <signal.h>
#include <stddef.h>
#include <unistd.h>
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
int
sigsuspend (set)
const sigset_t *set;
{
sigset_t oset;
int save;
if (set == NULL)
{
__set_errno (EINVAL);
return -1;
}
if (sigprocmask (SIG_SETMASK, set, &oset) < 0)
return -1;
(void) pause();
save = errno;
if (sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL) < 0)
return -1;
__set_errno (save);
return -1;
}
|
