diff options
Diffstat (limited to 'newlib/libc/sys/linux/signal.c')
-rw-r--r-- | newlib/libc/sys/linux/signal.c | 99 |
1 files changed, 50 insertions, 49 deletions
diff --git a/newlib/libc/sys/linux/signal.c b/newlib/libc/sys/linux/signal.c index b43cd778c..91e959612 100644 --- a/newlib/libc/sys/linux/signal.c +++ b/newlib/libc/sys/linux/signal.c @@ -1,54 +1,55 @@ -/* BSD-like signal function. - Copyright (C) 1991, 1992, 1996, 1997, 2000 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. */ - -#include <errno.h> +/* libc/sys/linux/signal.c - Signal handling functions */ + +/* Written 2000 by Werner Almesberger */ + + #include <signal.h> -#include <machine/weakalias.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/syscall.h> + + +#define __NR___sgetmask __NR_sgetmask /* avoid name space pollution */ +#define __NR___ssetmask __NR_ssetmask /* avoid name space pollution */ + +_syscall2(int,kill,pid_t,pid,int,sig) +_syscall2(__sighandler_t,signal,int,signum,__sighandler_t,handler) +_syscall3(int,sigaction,int,signum,const struct sigaction *,act, + struct sigaction *,oldact) +_syscall1(int,sigsuspend,const sigset_t *,mask) +_syscall1(int,sigpending,sigset_t *,set) +_syscall0(int,pause) +_syscall1(unsigned int,alarm,unsigned int,seconds) +_syscall3(int,sigprocmask,int,how,const sigset_t *,set,sigset_t *,oldset) + +static _syscall0(int,__sgetmask) +static _syscall1(int,__ssetmask,int,newmask) + + +int sigsetmask(int newmask) /* BSD */ +{ + return __ssetmask(newmask); +} -sigset_t _sigintr; /* 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 (sig, handler) - int sig; - __sighandler_t handler; +int sigmask(int signum) /* BSD */ { - struct sigaction act, oact; - - /* Check signal extents to protect __sigismember. */ - if (handler == SIG_ERR || sig < 1 || sig >= NSIG) - { - 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; - - return oact.sa_handler; + return 1 << signum; } -weak_alias (__bsd_signal, bsd_signal) -weak_alias (__bsd_signal, signal) -weak_alias (__bsd_signal, ssignal) + + +int sigblock(int mask) /* BSD */ +{ + return __ssetmask(mask | __sgetmask()); +} + + +int raise(int sig) +{ + return kill(getpid(),sig); +} + + +const char *const sys_siglist[] = { +#include "siglist.inc" +}; |