1 /*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 /* Main program for all test programs */
29
30 #include <stdio.h>
31 #include <signal.h>
32 #include <unistd.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <time.h>
36 #include <err.h>
37 #include <errno.h>
38 #include <sys/wait.h>
39 #include <sys/stat.h>
40
41 #include "stress.h"
42
43 static char const rcsid[] = "$Name: $ $FreeBSD$";
44
45 volatile int done_testing;
46 static int cleanupcalled = 0;
47 char *home;
48
49 static pid_t *r;
50
51 void
handler(int i)52 handler(int i)
53 {
54 int j;
55
56 done_testing = 1;
57 for (j = 0; j < op->incarnations; j++) {
58 if (op->verbose > 2)
59 printf("handler: kill -HUP %d\n", r[j]);
60 if (r[j] != 0 && kill(r[j], SIGHUP) == -1)
61 if (errno != ESRCH)
62 warn("kill(%d, SIGHUP), %s:%d", r[j], __FILE__, __LINE__);
63 }
64 if (op->kill == 1) {
65 sleep(5);
66 /* test programs may have blocked for the SIGHUP, so try harder */
67 for (j = 0; j < op->incarnations; j++) {
68 if (op->verbose > 2)
69 printf("handler: kill -KILL %d\n", r[j]);
70 if (r[j] != 0)
71 (void) kill(r[j], SIGKILL);
72 }
73 }
74 }
75
76 void
run_test_handler(int i)77 run_test_handler(int i)
78 {
79
80 done_testing = 1;
81 }
82
83 void
exit_handler(int i)84 exit_handler(int i)
85 {
86
87 exit(1);
88 }
89
90 void
callcleanup(void)91 callcleanup(void)
92 {
93 if (cleanupcalled == 0)
94 cleanup();
95 cleanupcalled = 1;
96 }
97
98 static void
run_tests(int i)99 run_tests(int i)
100 {
101 time_t start;
102
103 signal(SIGHUP, run_test_handler);
104 signal(SIGINT, exit_handler);
105 atexit(callcleanup);
106 setup(i);
107 if ((strcmp(getprogname(), "run") != 0) && (op->nodelay == 0))
108 sleep(random_int(1,10));
109 start = time(NULL);
110 while (done_testing == 0 &&
111 (time(NULL) - start) < op->run_time) {
112 test();
113 }
114 callcleanup();
115 exit(EXIT_SUCCESS);
116 }
117
118 static void
run_incarnations(void)119 run_incarnations(void)
120 {
121 int i;
122 int s;
123
124 signal(SIGHUP, handler);
125 for (i = 0; i < op->incarnations && done_testing == 0; i++) {
126 if ((r[i] = fork()) == 0) {
127 run_tests(i);
128 }
129 if (r[i] < 0) {
130 warn("fork(), %s:%d", __FILE__, __LINE__);
131 r[i] = 0;
132 break;
133 }
134 }
135 for (i = 0; i < op->incarnations; i++)
136 if (r[i] != 0 && waitpid(r[i], &s, 0) == -1)
137 warn("waitpid(%d), %s:%d", r[i], __FILE__, __LINE__);
138
139 exit(EXIT_SUCCESS);
140 }
141
142 static int
run_test(void)143 run_test(void)
144 {
145 pid_t p;
146 time_t start;
147 int status = 0;
148
149 if (random_int(1,100) > op->load)
150 return (status);
151
152 show_status();
153
154 start = time(NULL);
155 done_testing = 0;
156 fflush(stdout);
157 rmval();
158 p = fork();
159 if (p == 0)
160 run_incarnations();
161 if (p < 0)
162 err(1, "fork() in %s:%d", __FILE__, __LINE__);
163 while (done_testing != 1 &&
164 (time(NULL) - start) < op->run_time)
165 sleep(1);
166 if (kill(p, SIGHUP) == -1)
167 warn("kill(%d, SIGHUP), %s:%d", p, __FILE__, __LINE__);
168
169 if (waitpid(p, &status, 0) == -1)
170 err(1, "waitpid(%d), %s:%d", p, __FILE__, __LINE__);
171
172 return (status);
173 }
174
175 int
main(int argc,char ** argv)176 main(int argc, char **argv)
177 {
178 struct stat sb;
179 int status = 0;
180
181 options(argc, argv);
182
183 umask(0);
184 if (stat(op->wd, &sb) == -1) {
185 if (mkdir(op->wd, 0770) == -1)
186 if (errno != EEXIST)
187 err(1, "mkdir(%s) %s:%d", op->wd, __FILE__, __LINE__);
188 }
189 if (stat(op->cd, &sb) == -1) {
190 if (mkdir(op->cd, 0770) == -1)
191 if (errno != EEXIST)
192 err(1, "mkdir(%s) %s:%d", op->cd, __FILE__, __LINE__);
193 }
194 if ((home = getcwd(NULL, 0)) == NULL)
195 err(1, "getcwd(), %s:%d", __FILE__, __LINE__);
196 if (chdir(op->wd) == -1)
197 err(1, "chdir(%s) %s:%d", op->wd, __FILE__, __LINE__);
198
199 r = (pid_t *)calloc(1, op->incarnations * sizeof(pid_t));
200
201 status = run_test();
202
203 return (status);
204 }
205