mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
18d2988e5d
Now that defs.h, server.h and common-defs.h are included via the `-include` option, it is no longer necessary for source files to include them. Remove all the inclusions of these files I could find. Update the generation scripts where relevant. Change-Id: Ia026cff269c1b7ae7386dd3619bc9bb6a5332837 Approved-By: Pedro Alves <pedro@palves.net>
114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
/* Copyright (C) 2016-2024 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 "signals-state-save-restore.h"
|
|
#include "gdbsupport/gdb-sigmask.h"
|
|
|
|
#include <signal.h>
|
|
|
|
/* The original signal actions and mask. */
|
|
|
|
#ifdef HAVE_SIGACTION
|
|
static struct sigaction original_signal_actions[NSIG];
|
|
|
|
static sigset_t original_signal_mask;
|
|
#endif
|
|
|
|
/* See signals-state-save-restore.h. */
|
|
|
|
void
|
|
save_original_signals_state (bool quiet)
|
|
{
|
|
#ifdef HAVE_SIGACTION
|
|
int i;
|
|
int res;
|
|
|
|
res = gdb_sigmask (0, NULL, &original_signal_mask);
|
|
if (res == -1)
|
|
perror_with_name (("sigprocmask"));
|
|
|
|
bool found_preinstalled = false;
|
|
|
|
for (i = 1; i < NSIG; i++)
|
|
{
|
|
struct sigaction *oldact = &original_signal_actions[i];
|
|
|
|
res = sigaction (i, NULL, oldact);
|
|
if (res == -1 && errno == EINVAL)
|
|
{
|
|
/* Some signal numbers in the range are invalid. */
|
|
continue;
|
|
}
|
|
else if (res == -1)
|
|
perror_with_name (("sigaction"));
|
|
|
|
/* If we find a custom signal handler already installed, then
|
|
this function was called too late. This is a warning instead
|
|
of an internal error because this can also happen if you
|
|
LD_PRELOAD a library that installs a signal handler early via
|
|
__attribute__((constructor)), like libSegFault.so. */
|
|
if (!quiet
|
|
&& oldact->sa_handler != SIG_DFL
|
|
&& oldact->sa_handler != SIG_IGN)
|
|
{
|
|
found_preinstalled = true;
|
|
|
|
/* Use raw fprintf here because we're being called in early
|
|
startup, before GDB's filtered streams are created. */
|
|
fprintf (stderr,
|
|
_("warning: Found custom handler for signal "
|
|
"%d (%s) preinstalled.\n"), i,
|
|
strsignal (i));
|
|
}
|
|
}
|
|
|
|
if (found_preinstalled)
|
|
{
|
|
fprintf (stderr, _("\
|
|
Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN)\n\
|
|
won't be propagated to spawned programs.\n"));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* See signals-state-save-restore.h. */
|
|
|
|
void
|
|
restore_original_signals_state (void)
|
|
{
|
|
#ifdef HAVE_SIGACTION
|
|
int i;
|
|
int res;
|
|
|
|
for (i = 1; i < NSIG; i++)
|
|
{
|
|
res = sigaction (i, &original_signal_actions[i], NULL);
|
|
if (res == -1 && errno == EINVAL)
|
|
{
|
|
/* Some signal numbers in the range are invalid. */
|
|
continue;
|
|
}
|
|
else if (res == -1)
|
|
perror_with_name (("sigaction"));
|
|
}
|
|
|
|
res = gdb_sigmask (SIG_SETMASK, &original_signal_mask, NULL);
|
|
if (res == -1)
|
|
perror_with_name (("sigprocmask"));
|
|
#endif
|
|
}
|