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/* Copyright (C) 1997, 1998, 1999, 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. */
/* Modified 05/30/02 by Jeff Johnston, Red Hat Inc. */
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <machine/syscall.h>
/* The difference here is that the sigaction structure used in the
kernel is not the same as we use in the libc. Therefore we must
translate it here. */
#include <kernel_sigaction.h>
#define __NR___rt_sigaction __NR_rt_sigaction
static _syscall4(int,__rt_sigaction,int,sig,
const struct kernel_sigaction *,act,
struct kernel_sigaction *,oact,size_t,size);
/* 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
__libc_sigaction (sig, act, oact)
int sig;
const struct sigaction *act;
struct sigaction *oact;
{
int result;
struct kernel_sigaction kact, koact;
/* Save the current error value for later. We need not do this
if we are guaranteed to have realtime signals. */
if (act)
{
kact.k_sa_handler = act->sa_handler;
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
kact.sa_flags = act->sa_flags;
kact.sa_restorer = act->sa_restorer;
}
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
result = __rt_sigaction (sig,
act ? (&kact) : NULL,
oact ? (&koact) : NULL, NSIG / 8);
if (oact && result >= 0)
{
oact->sa_handler = koact.k_sa_handler;
memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
oact->sa_flags = koact.sa_flags;
oact->sa_restorer = koact.sa_restorer;
}
return result;
}
weak_alias (__libc_sigaction, __sigaction)
weak_alias (__libc_sigaction, sigaction)
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