mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/* Copyright (C) 1991, 1994, 1995 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 <ansidecl.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
|
|
/* Set the mask of blocked signals to MASK, returning the old mask. */
|
|
int
|
|
DEFUN(__sigsetmask, (mask), int mask)
|
|
{
|
|
register int sig;
|
|
sigset_t set, oset;
|
|
|
|
if (__sigemptyset(&set) < 0)
|
|
return -1;
|
|
|
|
if (sizeof (mask) == sizeof (set))
|
|
*(int *) &set = mask;
|
|
else
|
|
for (sig = 1; sig < NSIG; ++sig)
|
|
if ((mask & sigmask(sig)) &&
|
|
__sigaddset(&set, sig) < 0)
|
|
return -1;
|
|
|
|
if (sigprocmask(SIG_SETMASK, &set, &oset) < 0)
|
|
return -1;
|
|
|
|
mask = 0;
|
|
if (sizeof (mask) == sizeof (oset))
|
|
mask = *(int *) &oset;
|
|
else
|
|
for (sig = 1; sig < NSIG; ++sig)
|
|
if (__sigismember(&oset, sig))
|
|
mask |= sigmask(sig);
|
|
|
|
return mask;
|
|
}
|
|
|
|
weak_alias (__sigsetmask, sigsetmask)
|