Back to index

glibc  2.9
sigprocmask.c
Go to the documentation of this file.
00001 /* Copyright (C) 2001, 2003 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 /* 64 bit Linux for S/390 only has rt signals, thus we do not even want to try
00020    falling back to the old style signals as the default Linux handler does. */
00021 
00022 #include <errno.h>
00023 #include <signal.h>
00024 #include <unistd.h>
00025 
00026 #include <sysdep.h>
00027 #include <sys/syscall.h>
00028 
00029 /* Get and/or change the set of blocked signals.  */
00030 int
00031 __sigprocmask (how, set, oset)
00032      int how;
00033      const sigset_t *set;
00034      sigset_t *oset;
00035 {
00036 
00037   /* XXX The size argument hopefully will have to be changed to the
00038      real size of the user-level sigset_t.  */
00039   return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8);
00040 }
00041 weak_alias (__sigprocmask, sigprocmask)