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/* Copyright (C) 2016 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "common-defs.h"
#include "signal-dispositions-save-restore.h"
#include <signal.h>
/* The original signal handlers. */
#ifdef HAVE_SIGACTION
static sighandler_t original_signal_handlers[NSIG];
#endif
/* See signal-dispositions-save-restore.h. */
void
save_original_signal_dispositions (void)
{
#ifdef HAVE_SIGACTION
int i;
for (i = 1; i < NSIG; i++)
{
struct sigaction oldact;
sigaction (i, NULL, &oldact);
original_signal_handlers[i] = oldact.sa_handler;
/* If we find a signal handler already installed, then this
function was called too late. */
if (oldact.sa_handler != SIG_DFL
&& oldact.sa_handler != SIG_IGN)
internal_error (__FILE__, __LINE__, _("unexpected signal handler"));
}
#endif
}
/* See signal-dispositions-save-restore.h. */
void
restore_original_signal_dispositions (void)
{
#ifdef HAVE_SIGACTION
int i;
for (i = 1; i < NSIG; i++)
signal (i, original_signal_handlers[i]);
#endif
}
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