diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sigreturn.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/sigreturn.c | 54 |
1 files changed, 3 insertions, 51 deletions
diff --git a/sysdeps/unix/sysv/linux/sigreturn.c b/sysdeps/unix/sysv/linux/sigreturn.c index 540dfdf388..6b3116fef2 100644 --- a/sysdeps/unix/sysv/linux/sigreturn.c +++ b/sysdeps/unix/sysv/linux/sigreturn.c @@ -1,51 +1,3 @@ -/* Copyright (C) 1997 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. - - 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. - - 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. */ - -#include <errno.h> -#include <signal.h> -#include <unistd.h> - -extern int __syscall_sigreturn (struct sigcontext *); -extern int __syscall_rt_sigreturn (struct sigcontext *, size_t); - -/* The variable is shared between all wrappers around signal handling - functions which have RT equivalents. It is defined in sigsuspend.c. */ -extern int __libc_have_rt_sigs; - - -/* Get and/or change the set of blocked signals. */ -int -__sigreturn (scp) - struct sigcontext *scp; -{ - /* First try the RT signals. */ - if (__libc_have_rt_sigs) - { - /* XXX The size argument hopefully will have to be changed to the - real size of the user-level sigset_t. */ - int result = __syscall_rt_sigreturn (scp, _NSIG / 8); - - if (result >= 0 || errno != ENOSYS) - return result; - - __libc_have_rt_sigs = 0; - } - - return __syscall_sigreturn (scp); -} -weak_alias (__sigprocmask, sigprocmask) +/* The sigreturn syscall cannot be explicitly called on Linux, only + implicitly by returning from a signal handler. */ +#include <sysdeps/generic/sigreturn.c> |