144 lines
3.2 KiB
Bash
Executable File
144 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 EMC Corp.
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# All rights reserved.
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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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# Regression test for kern/142757, race condition in traced process signal
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# handling. Fixed in r202692.
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# Test scenario by Tijl Coosemans, tijl@
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. ../default.cfg
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cd /tmp
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cat > race1.c <<EOF
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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int
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main(void)
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{
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pid_t pid;
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int i, status;
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alarm(120);
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/* fork dummy child process */
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pid = fork();
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if (pid == 0) {
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/* child does nothing */
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for (;;) {
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sleep(1);
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}
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} else {
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/* parent */
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sleep(1);
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for (i = 0; i < 100000; i++) {
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/* loop: attach, wait, detach */
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printf("attach ");
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fflush(stdout);
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ptrace(PT_ATTACH, pid, (caddr_t) 0, 0);
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printf("wait ");
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fflush(stdout);
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wait4(pid, &status, 0, NULL);
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printf("detach ");
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fflush(stdout);
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ptrace(PT_DETACH, pid, (caddr_t) 1, 0);
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printf("ok\n");
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fflush(stdout);
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}
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}
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kill(pid, SIGINT);
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return (0);
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}
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EOF
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cat > race2.c <<EOF
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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int
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main(void)
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{
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pid_t pid;
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int i, status;
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alarm(120);
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/* fork dummy child process */
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pid = fork();
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if (pid == 0) {
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/* child does nothing */
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for (;;) {
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sleep(1);
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}
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} else {
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/* parent */
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sleep(1);
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ptrace(PT_ATTACH, pid, (caddr_t) 0, 0);
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wait4(pid, &status, 0, NULL);
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for (i = 0; i < 100000; i++) {
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/* loop: continue, kill, wait */
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printf("continue ");
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fflush(stdout);
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ptrace(PT_CONTINUE, pid, (caddr_t) 1, 0);
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printf("kill ");
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fflush(stdout);
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kill(pid, SIGINT);
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printf("wait ");
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fflush(stdout);
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wait4(pid, &status, 0, NULL);
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printf("ok\n");
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fflush(stdout);
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}
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}
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return (0);
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}
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EOF
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mycc -o race1 -Wall -Wextra race1.c
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mycc -o race2 -Wall -Wextra race2.c
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./race1 > /dev/null || echo "FAIL #1"
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./race2 > /dev/null || echo "FAIL #2"
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rm -f race1.c race1 race2.c race2
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