1 /*
2 * COPYRIGHT (c) 1990 BY *
3 * GEORGE J. CARRETTE, CONCORD, MASSACHUSETTS. *
4 * ALL RIGHTS RESERVED *
5
6 Permission to use, copy, modify, distribute and sell this software
7 and its documentation for any purpose and without fee is hereby
8 granted, provided that the above copyright notice appear in all copies
9 and that both that copyright notice and this permission notice appear
10 in supporting documentation, and that the name of the author
11 not be used in advertising or publicity pertaining to distribution
12 of the software without specific, written prior permission.
13
14 THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
15 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
16 HE BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
17 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
18 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
19 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
20 SOFTWARE.
21
22 This code is based on crashme.c
23
24 */
25
26 #include <sys/param.h>
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <stdio.h>
30 #include <fcntl.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33 #include <signal.h>
34 #include <sys/wait.h>
35 #include <string.h>
36 #include <err.h>
37
38 #include "stress.h"
39
40 #define BUFS 64
41
42 char buf [BUFS];
43 pid_t pid;
44
45 void (*sub)();
46
47 void
proto(void)48 proto(void) {
49 int i = 2;
50 printf("Hello, world (%d)\n", i);
51 return;
52 }
53
54 void
alter(void)55 alter(void) { /* Change one byte in the code */
56 int i;
57 i = random() % BUFS;
58 buf[i] = random() & 0xff;
59 }
60
61 void
hand(int i)62 hand(int i) { /* alarm handler */
63 if (pid != 0) {
64 kill(pid, SIGHUP);
65 kill(pid, SIGKILL);
66 }
67 exit(1);
68 }
69
70 int
setup(int nb)71 setup(int nb)
72 {
73 return (0);
74 }
75
76 void
cleanup(void)77 cleanup(void)
78 {
79 }
80
81 int
test(void)82 test(void)
83 {
84 pid_t pid;
85 int i, status;
86
87 for (i = 0; i < 512; i++) {
88 if (i % 10 == 0)
89 bcopy(proto, buf, BUFS);
90 alter();
91
92 if ((pid = fork()) == 0) {
93 signal(SIGALRM, hand);
94 #if 0
95 signal(SIGILL, hand);
96 signal(SIGFPE, hand);
97 signal(SIGSEGV, hand);
98 signal(SIGBUS, hand);
99 signal(SIGURG, hand);
100 signal(SIGSYS, hand);
101 signal(SIGTRAP, hand);
102 #endif
103 alarm(2);
104
105 (*sub)();
106
107 exit(EXIT_SUCCESS);
108
109 } else if (pid > 0) {
110 signal(SIGALRM, hand);
111 alarm(3);
112 if (waitpid(pid, &status, 0) == -1)
113 warn("waitpid(%d)", pid);
114 alarm(0);
115 kill(pid, SIGINT);
116 } else
117 err(1, "fork(), %s:%d", __FILE__, __LINE__);
118 }
119
120 return (0);
121 }
122