7673701413
PIE executables use crtbeginS.o and have a non-NULL dso_handle as a result. Reviewed by: andrew, emaste MFC after: 2 weeks Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D27126
172 lines
3.8 KiB
C
172 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018 Andrew Turner
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <atf-c.h>
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#include <crt.h>
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extern bool run_dtors_test;
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extern bool run_fini_array_test;
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void dso_handle_check(void);
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#ifndef DSO_BASE
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typedef void (*func_ptr)(void);
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bool run_dtors_test = false;
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bool run_fini_array_test = false;
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static void
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dtors_handler(void)
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{
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if (run_dtors_test)
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_exit(1);
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}
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__section(".dtors") __used static func_ptr dtors_func =
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&dtors_handler;
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#endif
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#ifndef DSO_LIB
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ATF_TC_WITHOUT_HEAD(dtors_test);
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ATF_TC_BODY(dtors_test, tc)
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{
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pid_t pid, wpid;
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int status;
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pid = fork();
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switch(pid) {
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case -1:
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break;
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case 0:
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run_dtors_test = true;
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exit(0);
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default:
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while ((wpid = waitpid(pid, &status, 0)) == -1 &&
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errno == EINTR)
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;
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#ifdef HAVE_CTORS
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ATF_REQUIRE_MSG(WEXITSTATUS(status) == 1,
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".dtors failed to run");
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#else
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ATF_REQUIRE_MSG(WEXITSTATUS(status) == 0,
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".dtors incorrectly ran");
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#endif
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break;
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}
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}
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#endif
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#ifndef DSO_BASE
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static void
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fini_array_handler(void)
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{
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if (run_fini_array_test)
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_exit(1);
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}
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__section(".fini_array") __used static func_ptr fini_array_func =
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&fini_array_handler;
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#endif
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#ifndef DSO_LIB
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ATF_TC_WITHOUT_HEAD(fini_array_test);
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ATF_TC_BODY(fini_array_test, tc)
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{
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pid_t pid, wpid;
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int status;
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pid = fork();
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switch(pid) {
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case -1:
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break;
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case 0:
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run_fini_array_test = true;
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exit(0);
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default:
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while ((wpid = waitpid(pid, &status, 0)) == -1 &&
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errno == EINTR)
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;
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ATF_REQUIRE_MSG(WEXITSTATUS(status) == 1,
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".fini_array failed to run");
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break;
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}
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}
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#endif
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#ifndef DSO_BASE
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extern void *__dso_handle;
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void
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dso_handle_check(void)
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{
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void *dso = __dso_handle;
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#if defined(DSO_LIB) || defined(__PIE__)
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ATF_REQUIRE_MSG(dso != NULL,
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"Null __dso_handle in DSO/PIE");
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#else
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ATF_REQUIRE_MSG(dso == NULL,
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"Invalid __dso_handle in non-DSO");
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#endif
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}
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#endif
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#ifndef DSO_LIB
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ATF_TC_WITHOUT_HEAD(dso_handle_test);
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ATF_TC_BODY(dso_handle_test, tc)
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{
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dso_handle_check();
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, dtors_test);
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ATF_TP_ADD_TC(tp, fini_array_test);
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ATF_TP_ADD_TC(tp, dso_handle_test);
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return (atf_no_error());
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}
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#endif
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