| /* 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #define sigpause __rename_sigpause |
| #include <errno.h> |
| #include <signal.h> |
| #include <stddef.h> /* For NULL. */ |
| #include <sysdep-cancel.h> |
| #undef sigpause |
| |
| #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 |
| do_sigpause (int sig_or_mask, int is_sig) |
| { |
| sigset_t set; |
| |
| if (is_sig != 0) |
| { |
| /* The modern X/Open implementation is requested. */ |
| if (__sigprocmask (0, NULL, &set) < 0 |
| || sigdelset (&set, sig_or_mask) < 0) |
| return -1; |
| } |
| else if (sigset_set_old_mask (&set, sig_or_mask) < 0) |
| return -1; |
| |
| /* 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. */ |
| return __sigsuspend (&set); |
| } |
| |
| int |
| __sigpause (int sig_or_mask, int is_sig) |
| { |
| if (SINGLE_THREAD_P) |
| return do_sigpause (sig_or_mask, is_sig); |
| |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| int result = do_sigpause (sig_or_mask, is_sig); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| |
| return result; |
| } |
| libc_hidden_def (__sigpause) |
| |
| /* 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. */ |
| int |
| __attribute__ ((weak)) |
| __default_sigpause (int mask) |
| { |
| return __sigpause (mask, 0); |
| } |
| #undef sigpause |
| weak_alias (__default_sigpause, sigpause) |
| strong_alias (__default_sigpause, __libc_sigpause) |
| |
| |
| /* 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. */ |
| int |
| __attribute__ ((weak)) |
| __xpg_sigpause (int sig) |
| { |
| return __sigpause (sig, 1); |
| } |
| strong_alias (__xpg_sigpause, __libc___xpg_sigpause) |