63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
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/* This test is not yet added to Makefile */
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#include <stddef.h>
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#include <unistd.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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static const struct sockaddr sa;
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int main(int argc, char **argv)
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{
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int loops;
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int pid;
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sigset_t set;
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sigemptyset(&set);
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sigaddset(&set, SIGCHLD);
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sigprocmask(SIG_BLOCK, &set, NULL);
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loops = 999;
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if (argv[1])
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loops = atoi(argv[1]);
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while (--loops >= 0) {
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pid = fork();
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if (pid < 0) _exit(1);
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if (!pid) {
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/* child */
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int child = getpid();
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loops = 99;
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while (--loops) {
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pid = fork();
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if (pid < 0) _exit(1);
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if (!pid) {
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/* grandchild: kill child */
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kill(child, SIGKILL);
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_exit(0);
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}
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/* Add various syscalls you want to test here.
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* strace will decode them and suddenly find
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* process disappearing.
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* But leave at least one case "empty", so that
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* "kill grandchild" happens quicker.
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* This produces cases when strace can't even
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* decode syscall number before process dies.
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*/
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switch (loops & 1) {
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case 0: /* empty */ break;
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case 1: sendto(-1, "Hello cruel world", 17, 0, &sa, sizeof(sa)); break;
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}
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/* kill grandchild */
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kill(pid, SIGKILL);
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}
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_exit(0);
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}
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/* parent */
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wait(NULL);
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}
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return 0;
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}
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