diff options
Diffstat (limited to 'libc/signal/signal.c')
| -rw-r--r-- | libc/signal/signal.c | 54 |
1 files changed, 29 insertions, 25 deletions
diff --git a/libc/signal/signal.c b/libc/signal/signal.c index 463de1e50..7df88eff0 100644 --- a/libc/signal/signal.c +++ b/libc/signal/signal.c @@ -1,49 +1,53 @@ /* BSD-like signal function. - Copyright (C) 1991, 1992, 1996, 1997, 2000 Free Software Foundation, Inc. + Copyright (C) 1991,1992,1996,1997,2000,2002,2005 + 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 Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. + 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 - Library General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + 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 <string.h> /* For the real memset prototype. */ -sigset_t _sigintr; /* Set by siginterrupt. */ +sigset_t _sigintr attribute_hidden; /* Set by siginterrupt. */ /* Set the handler for the signal SIG to HANDLER, returning the old handler, or SIG_ERR on error. */ -__sighandler_t bsd_signal (int sig, __sighandler_t handler) +__sighandler_t +__bsd_signal (int sig, __sighandler_t handler) { - struct sigaction act, oact; + struct sigaction act, oact; - /* Check signal extents to protect __sigismember. */ - if (handler == SIG_ERR || sig < 1 || sig >= NSIG) + /* Check signal extents to protect __sigismember. */ + if (handler == SIG_ERR || sig < 1 || sig >= NSIG) { - __set_errno (EINVAL); - return SIG_ERR; + __set_errno (EINVAL); + return SIG_ERR; } - act.sa_handler = handler; - if (__sigemptyset (&act.sa_mask) < 0 - || __sigaddset (&act.sa_mask, sig) < 0) - return SIG_ERR; - act.sa_flags = __sigismember (&_sigintr, sig) ? 0 : SA_RESTART; - if (sigaction (sig, &act, &oact) < 0) - return SIG_ERR; + act.sa_handler = handler; + if (__sigemptyset (&act.sa_mask) < 0 + || __sigaddset (&act.sa_mask, sig) < 0) + return SIG_ERR; + act.sa_flags = __sigismember (&_sigintr, sig) ? 0 : SA_RESTART; + if (sigaction (sig, &act, &oact) < 0) + return SIG_ERR; - return oact.sa_handler; + return oact.sa_handler; } -weak_alias (bsd_signal, signal) +weak_alias (__bsd_signal, bsd_signal) +weak_alias (__bsd_signal, signal) |