Differential D22187 Diff 65528 head/lib/libc/tests/gen/sigsetops_test.c

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head/lib/libc/tests/gen/sigsetops_test.c

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				/*-
				* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
				*
				* Copyright (c) 2019 Kyle Evans <kevans@FreeBSD.org>
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*/

				#include <sys/cdefs.h>
				__FBSDID("$FreeBSD$");

				#include <errno.h>
				#include <signal.h>
				#include <stdbool.h>

				#include <atf-c.h>

				/* Return the status of the specified sig's bit. */
				static bool
				sigbitstatus(const sigset_t *set, int sig)
				{

				return (set->__bits[_SIG_WORD(sig)] & _SIG_BIT(sig)) != 0;
				}

				/* Verify that sig is the lone bit set in the sigset. */
				static void
				siglonebit(const sigset_t *set, int sig)
				{
				int i;

				for (i = 0; i < _SIG_WORDS; ++i) {
				if (i != _SIG_WORD(sig))
				ATF_REQUIRE_MSG(set->__bits[i] == 0,
				"word %d altered to %x", i, set->__bits[i]);
				else
				ATF_REQUIRE_MSG((set->__bits[i] & ~_SIG_BIT(sig)) == 0,
				"word %d has other bits set: %x", i,
				set->__bits[i] & ~_SIG_BIT(sig));
				}
				}

				static void
				sigcompare(const sigset_t left, const sigset_t right)
				{
				int i;

				for (i = 0; i < _SIG_WORDS; ++i) {
				ATF_REQUIRE_MSG(left->__bits[i] == right->__bits[i],
				"sig comparison failed at %d; left=%x, right=%x",
				i, left->__bits[i], right->__bits[i]);
				}
				}

				/*
				* Test implementation details of our sigsetops... make sure the correct bits
				* are getting set, for the most part, and that duplicate operations don't
				* error out.
				*/
				ATF_TC_WITHOUT_HEAD(posix_sigsetop_test);
				ATF_TC_BODY(posix_sigsetop_test, tc)
				{
				sigset_t set;
				int i;

				ATF_REQUIRE(sigfillset(&set) == 0);
				for (i = 0; i < _SIG_WORDS; ++i) {
				ATF_REQUIRE_MSG(set.__bits[i] == ~0U, "sigfillset failed @ %d",
				i);
				}
				ATF_REQUIRE(sigemptyset(&set) == 0);
				for (i = 0; i < _SIG_WORDS; ++i) {
				ATF_REQUIRE_MSG(set.__bits[i] == 0, "sigemptyset failed @ %d",
				i);
				}
				/* Ensure that sigismember reflects the empty set status. */
				for (i = 1; i < NSIG; ++i) {
				ATF_REQUIRE(sigismember(&set, i) == 0);
				}

				ATF_REQUIRE(sigaddset(&set, -1) == -1 && errno == EINVAL);
				ATF_REQUIRE(sigaddset(&set, _SIG_MAXSIG + 1) == -1 && errno == EINVAL);
				ATF_REQUIRE(sigdelset(&set, -1) == -1 && errno == EINVAL);
				ATF_REQUIRE(sigdelset(&set, _SIG_MAXSIG + 1) == -1 && errno == EINVAL);

				ATF_REQUIRE(sigaddset(&set, SIGSEGV) == 0);
				ATF_REQUIRE(sigismember(&set, SIGSEGV) != 0);
				ATF_REQUIRE_MSG(sigbitstatus(&set, SIGSEGV), "sigaddset failure");
				siglonebit(&set, SIGSEGV);

				/*
				* A second addition should succeed without altering the state. This
				* should be trivially true.
				*/
				ATF_REQUIRE(sigaddset(&set, SIGSEGV) == 0);
				ATF_REQUIRE_MSG(sigbitstatus(&set, SIGSEGV),
				"sigaddset twice changed bit");

				ATF_REQUIRE(sigdelset(&set, SIGSEGV) == 0);
				ATF_REQUIRE_MSG(!sigbitstatus(&set, SIGSEGV), "sigdelset failure");
				ATF_REQUIRE(sigismember(&set, SIGSEGV) == 0);
				ATF_REQUIRE(sigdelset(&set, SIGSEGV) == 0);
				ATF_REQUIRE_MSG(!sigbitstatus(&set, SIGSEGV),
				"sigdelset twice changed bit");
				for (i = 0; i < _SIG_WORDS; ++i) {
				ATF_REQUIRE_MSG(set.__bits[i] == 0, "set not empty @ %d",
				i);
				}
				for (i = 1; i < NSIG; ++i) {
				ATF_REQUIRE(sigismember(&set, i) == 0);
				}
				}

				/*
				* Test extended sigset ops for union/intersection and testing of empty set.
				*/
				ATF_TC_WITHOUT_HEAD(extended_sigsetop_test);
				ATF_TC_BODY(extended_sigsetop_test, tc)
				{
				sigset_t chkset, set1, set2, set3;

				sigemptyset(&chkset);
				sigemptyset(&set1);
				sigemptyset(&set2);
				ATF_REQUIRE(sigisemptyset(&chkset) != 0);
				sigaddset(&set1, SIGSEGV);
				sigaddset(&set2, SIGKILL);
				sigaddset(&chkset, SIGSEGV);
				ATF_REQUIRE(sigisemptyset(&chkset) == 0);
				sigaddset(&chkset, SIGKILL);
				ATF_REQUIRE(sigorset(&set3, &set1, &set2) == 0);
				ATF_REQUIRE(sigbitstatus(&set3, SIGSEGV));
				ATF_REQUIRE(sigbitstatus(&set3, SIGKILL));

				/*
				* chkset was built with our POSIX-specified set operations that we've
				* already tested, so it's a good comparison.
				*/
				sigcompare(&chkset, &set3);
				/*
				* Clear chkset; make sure sigisemptyset() still looks ok. sigaddset
				* and sigdelset have already been tested to make sure that they're not
				* touching other bits.
				*/
				sigdelset(&chkset, SIGSEGV);
				sigdelset(&chkset, SIGKILL);
				ATF_REQUIRE(sigisemptyset(&chkset) != 0);
				ATF_REQUIRE(sigandset(&set3, &set1, &set2) == 0);
				/* Make sure we clobbered these. */
				ATF_REQUIRE(!sigbitstatus(&set3, SIGSEGV));
				ATF_REQUIRE(!sigbitstatus(&set3, SIGKILL));
				ATF_REQUIRE(sigisemptyset(&set3) != 0);
				/* Rebuild for sigandset test */
				sigemptyset(&set1);
				sigemptyset(&set2);
				sigaddset(&set1, SIGSEGV);
				sigaddset(&set1, SIGKILL);
				sigaddset(&set2, SIGSEGV);
				ATF_REQUIRE(sigandset(&set3, &set1, &set2) == 0);
				ATF_REQUIRE(sigbitstatus(&set3, SIGSEGV));
				ATF_REQUIRE(!sigbitstatus(&set3, SIGKILL));
				}

				ATF_TP_ADD_TCS(tp)
				{

				ATF_TP_ADD_TC(tp, posix_sigsetop_test);
				ATF_TP_ADD_TC(tp, extended_sigsetop_test);

				return (atf_no_error());
				}