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glibc  2.9
sigpending.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 
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 /* Linux/ia64 only has rt signals, thus we do not even want to try falling
00020    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 #include <bp-checks.h>
00029 
00030 /* Change the set of blocked signals to SET,
00031    wait until a signal arrives, and restore the set of blocked signals.  */
00032 int
00033 sigpending (set)
00034      sigset_t *set;
00035 {
00036   /* XXX The size argument hopefully will have to be changed to the
00037      real size of the user-level sigset_t.  */
00038   return INLINE_SYSCALL (rt_sigpending, 2, CHECK_SIGSET (set), _NSIG / 8);
00039 }