/* Copyright (C) 1991,92,94-98,2000,2002,2003,2004 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 Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <signal.h> #define __need_NULL #include <stddef.h> #include <cancel.h> #include "sigset-cvt-mask.h" /* Set the mask of blocked signals to MASK, wait for a signal to arrive, and then restore the mask. */ static int __sigpause (int sig_or_mask, int is_sig) { sigset_t set; if (is_sig) { /* The modern X/Open implementation is requested. */ sigprocmask (SIG_BLOCK, NULL, &set); /* Bound-check sig_or_mask, remove it from the set. */ if (sigdelset (&set, sig_or_mask) < 0) return -1; } else sigset_set_old_mask (&set, sig_or_mask); /* Note the sigpause() is a cancellation point. But since we call sigsuspend() which itself is a cancellation point we do not have to do anything here. */ /* uClibc note: not true on uClibc, we call the non-cancellable version */ return __NC(sigsuspend)(&set); } int __bsd_sigpause(int mask); int __bsd_sigpause(int mask) { return __sigpause(mask, 0); } /* We have to provide a default version of this function since the standards demand it. The version which is a bit more reasonable is the BSD version. So make this the default. */ static int __NC(sigpause)(int sig) { return __sigpause(sig, 1); } CANCELLABLE_SYSCALL(int, sigpause, (int sig), (sig))