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glibc  2.9
sigprocmask.c
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00001 /* Copyright (C) 1997, 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Linux/IA64 specific sigprocmask
00004    Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 /* Linux/ia64 only has rt signals, thus we do not even want to try falling
00022    back to the old style signals as the default Linux handler does. */
00023 
00024 #include <errno.h>
00025 #include <signal.h>
00026 #include <unistd.h>
00027 
00028 #include <sysdep.h>
00029 #include <sys/syscall.h>
00030 #include <bp-checks.h>
00031 
00032 /* Get and/or change the set of blocked signals.  */
00033 int
00034 __sigprocmask (how, set, oset)
00035      int how;
00036      const sigset_t *set;
00037      sigset_t *oset;
00038 {
00039 
00040   /* XXX The size argument hopefully will have to be changed to the
00041      real size of the user-level sigset_t.  */
00042   return INLINE_SYSCALL (rt_sigprocmask, 4, how, CHECK_SIGSET (set),
00043                       CHECK_SIGSET_NULL_OK (oset), _NSIG / 8);
00044 }
00045 weak_alias (__sigprocmask, sigprocmask)