mirror of
https://sourceware.org/git/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/* Self tests for scoped_ignored_signal for GDB, the GNU debugger.
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Copyright (C) 2021-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "gdbsupport/scoped_ignore_signal.h"
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#include "gdbsupport/selftest.h"
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#include "gdbsupport/scope-exit.h"
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#include <unistd.h>
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#include <signal.h>
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namespace selftests {
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namespace scoped_ignore_sig {
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#ifdef SIGPIPE
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/* True if the SIGPIPE handler ran. */
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static volatile sig_atomic_t got_sigpipe = 0;
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/* SIGPIPE handler for testing. */
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static void
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handle_sigpipe (int)
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{
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got_sigpipe = 1;
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}
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/* Test scoped_ignore_sigpipe. */
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static void
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test_sigpipe ()
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{
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auto *osig = signal (SIGPIPE, handle_sigpipe);
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SCOPE_EXIT { signal (SIGPIPE, osig); };
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#ifdef HAVE_SIGPROCMASK
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/* Make sure SIGPIPE isn't blocked. */
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sigset_t set, old_state;
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sigemptyset (&set);
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sigaddset (&set, SIGPIPE);
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sigprocmask (SIG_UNBLOCK, &set, &old_state);
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SCOPE_EXIT { sigprocmask (SIG_SETMASK, &old_state, nullptr); };
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#endif
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/* Create pipe, and close read end so that writes to the pipe fail
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with EPIPE. */
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int fd[2];
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char c = 0xff;
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int r;
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r = pipe (fd);
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SELF_CHECK (r == 0);
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close (fd[0]);
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SCOPE_EXIT { close (fd[1]); };
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/* Check that writing to the pipe results in EPIPE. EXPECT_SIG
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indicates whether a SIGPIPE signal is expected. */
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auto check_pipe_write = [&] (bool expect_sig)
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{
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got_sigpipe = 0;
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errno = 0;
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r = write (fd[1], &c, 1);
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SELF_CHECK (r == -1 && errno == EPIPE
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&& got_sigpipe == expect_sig);
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};
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/* Check that without a scoped_ignore_sigpipe in scope we indeed get
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a SIGPIPE signal. */
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check_pipe_write (true);
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/* Now check that with a scoped_ignore_sigpipe in scope, SIGPIPE is
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ignored/blocked. */
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{
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scoped_ignore_sigpipe ignore1;
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check_pipe_write (false);
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/* Check that scoped_ignore_sigpipe nests correctly. */
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{
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scoped_ignore_sigpipe ignore2;
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check_pipe_write (false);
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}
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/* If nesting works correctly, this write results in no
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SIGPIPE. */
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check_pipe_write (false);
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}
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/* No scoped_ignore_sigpipe is in scope anymore, so this should
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result in a SIGPIPE signal. */
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check_pipe_write (true);
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}
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#endif /* SIGPIPE */
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} /* namespace scoped_ignore_sig */
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} /* namespace selftests */
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void _initialize_scoped_ignore_signal_selftests ();
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void
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_initialize_scoped_ignore_signal_selftests ()
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{
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#ifdef SIGPIPE
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selftests::register_test ("scoped_ignore_sigpipe",
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selftests::scoped_ignore_sig::test_sigpipe);
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#endif
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}
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