diff options
Diffstat (limited to 'newlib/libc/sys/linux/sigwait.c')
-rw-r--r-- | newlib/libc/sys/linux/sigwait.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/newlib/libc/sys/linux/sigwait.c b/newlib/libc/sys/linux/sigwait.c deleted file mode 100644 index 09a4190e7..000000000 --- a/newlib/libc/sys/linux/sigwait.c +++ /dev/null @@ -1,93 +0,0 @@ -/* Implementation of sigwait function from POSIX.1c. - Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. - - 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. */ - -#include <errno.h> -#include <signal.h> -#include <stddef.h> /* For NULL. */ - -#include <machine/weakalias.h> - -/* This is our dummy signal handler we use here. */ -static void ignore_signal (int sig); - -/* Place where to remember which signal we got. Please note that this - implementation cannot be used for the threaded libc. The - libpthread must provide an own version. */ -static int was_sig; - - -int -__sigwait (const sigset_t *set, int *sig) -{ - sigset_t tmp_mask; - struct sigaction saved[NSIG]; - struct sigaction action; - int save_errno; - int this; - - /* Prepare set. */ - sigfillset (&tmp_mask); - - /* Unblock all signals in the SET and register our nice handler. */ - action.sa_handler = ignore_signal; - action.sa_flags = 0; - sigfillset (&action.sa_mask); /* Block all signals for handler. */ - - /* Make sure we recognize error conditions by setting WAS_SIG to a - value which does not describe a legal signal number. */ - was_sig = -1; - - for (this = 1; this < NSIG; ++this) - if (sigismember (set, this)) - { - /* Unblock this signal. */ - sigdelset (&tmp_mask, this); - - /* Register temporary action handler. */ - if (__sigaction (this, &action, &saved[this]) != 0) - goto restore_handler; - } - - /* Now we can wait for signals. */ - __sigsuspend (&tmp_mask); - - restore_handler: - save_errno = errno; - - while (--this >= 1) - if (sigismember (set, this)) - /* We ignore errors here since we must restore all handlers. */ - __sigaction (this, &saved[this], NULL); - - errno = (save_errno); - - /* Store the result and return. */ - *sig = was_sig; - return was_sig == -1 ? -1 : 0; -} -weak_alias (__sigwait, sigwait) - - -static void -ignore_signal (int sig) -{ - /* Remember the signal. */ - was_sig = sig; -} |