diff options
Diffstat (limited to 'sysdeps/unix/sysv/sysv4/sigaction.c')
-rw-r--r-- | sysdeps/unix/sysv/sysv4/sigaction.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/sysdeps/unix/sysv/sysv4/sigaction.c b/sysdeps/unix/sysv/sysv4/sigaction.c deleted file mode 100644 index d5926b3d42..0000000000 --- a/sysdeps/unix/sysv/sysv4/sigaction.c +++ /dev/null @@ -1,80 +0,0 @@ -/* Copyright (C) 1994,1995,1996,1997,2002 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> -#include <signal.h> -#include <stddef.h> - -static __sighandler_t user_handlers[NSIG]; - -extern int __context_syscall (int, struct sigcontext *); -extern int __sigaction_syscall (int, - const struct sigaction *, struct sigaction *); - -static void -trampoline (int sig, int code, struct sigcontext *context) -{ - (*(void (*) (int, int, struct sigcontext *)) user_handlers[sig]) - (sig, code, context); - __context_syscall (1, context); -} - -/* If ACT is not NULL, change the action for SIG to *ACT. - If OACT is not NULL, put the old action for SIG in *OACT. */ -int -__sigaction (sig, act, oact) - int sig; - const struct sigaction *act; - struct sigaction *oact; -{ - struct sigaction myact; - __sighandler_t ohandler; - - if (sig <= 0 || sig >= NSIG) - { - __set_errno (EINVAL); - return -1; - } - - ohandler = user_handlers[sig]; - - if (act != NULL) - { - user_handlers[sig] = act->sa_handler; - if (act->sa_handler != SIG_DFL && act->sa_handler != SIG_IGN) - { - myact = *act; - act = &myact; - act->sa_handler = (__sighandler_t) trampoline; - } - } - - if (__sigaction_syscall (sig, act, oact) < 0) - { - /* The syscall got an error. Restore the old handler and return -1. */ - user_handlers[sig] = ohandler; - return -1; - } - - if (oact != NULL && oact->sa_handler == (__sighandler_t) trampoline) - oact->sa_handler = ohandler; - - return 0; -} -libc_hidden_def (__sigaction) -weak_alias (__sigaction, sigaction) |