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test
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test16.c
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C/C++ Source or Header
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1990-07-20
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315 lines
/* test 16 */
#include <signal.h>
#include <errno.h>
#include <stdio.h>
#define MAX_ERROR 4
extern int errno;
int errct, subtest;
int func1(), func10(), func8(), funcalrm(), func11();
int childsigs, parsigs, alarms;
int zero[1024];
main()
{
int i;
printf("Test 16 ");
fflush(stdout); /* have to flush for child's benefit */
for (i = 0; i < 1; i++) {
test50();
test51();
test53();
test54();
test55();
/* test56(); */
test57();
}
if (errct == 0)
printf("ok\n");
else
printf("%d errors\n", errct);
exit(0);
}
test50()
{
int parpid, childpid, flag, *zp;
flag = 0;
for (zp = &zero[0]; zp < &zero[1024]; zp++)
if (*zp != 0) flag = 1;
if (flag) e(0); /* check if bss is cleared to 0 */
if (signal(1, func1) < 0) e(1);
if (signal(10, func10) < 0) e(2);
parpid = getpid();
if (childpid = fork()) {
if (childpid < 0) ex();
parent(childpid);
} else {
child(parpid);
}
if (signal(1, SIG_DFL) < 0) e(4);
if (signal(10, SIG_DFL) < 0) e(5);
}
parent(childpid)
int childpid;
{
int i;
for (i = 0; i < 3; i++) {
if (kill(childpid, 1) < 0) e(6);
while (parsigs == 0);
parsigs--;
}
if (wait(&i) < 0) e(7);
if (i != 256 * 6) e(8);
}
child(parpid)
int parpid;
{
int i;
for (i = 0; i < 3; i++) {
while (childsigs == 0);
childsigs--;
if (kill(parpid, 10) < 0) e(9);
}
exit(6);
}
func1()
{
if (signal(1, func1) < 0) e(10);
childsigs++;
}
func10()
{
if (signal(10, func10) < 0) e(11);
parsigs++;
}
test51()
{
int cpid, n, pid;
if ((pid = fork())) {
if (pid < 0) ex();
if ((pid = fork())) {
if (pid < 0) ex();
if (cpid = fork()) {
if (cpid < 0) ex();
if (kill(cpid, 9) < 0) e(12);
if (wait(&n) < 0) e(13);
if (wait(&n) < 0) e(14);
if (wait(&n) < 0) e(15);
} else {
pause();
while (1);
}
} else {
exit(0);
}
} else {
exit(0);
}
}
test52()
{
int pid, n, k;
pid = getpid();
if (getpid() == pid) k = fork(); /* only parent forks */
if (k < 0) ex();
if (getpid() == pid) k = fork(); /* only parent forks */
if (k < 0) ex();
if (getpid() == pid) k = fork(); /* only parent forks */
if (k < 0) ex();
if (getpid() == pid) {
if (kill(0, 9) < 0) e(16);
if (wait(&n) < 0) e(17);
if (wait(&n) < 0) e(18);
if (wait(&n) < 0) e(19);
} else
pause();
}
int sigmap[5] = {9, 10, 11};
test53()
{
int n, i, pid, wpid;
/* Test exit status codes for processes killed by signals. */
for (i = 0; i < 3; i++) {
if (pid = fork()) {
if (pid < 0) ex();
sleep(3); /* wait for child to pause */
if (kill(pid, sigmap[i]) < 0) {
e(20);
exit(1);
}
if ((wpid = wait(&n)) < 0) e(21);
if ((n & 077) != sigmap[i]) e(22);
if (pid != wpid) e(23);
} else {
pause();
exit(0);
}
}
}
test54()
{
/* Test alarm */
int i;
alarms = 0;
for (i = 0; i < 8; i++) {
signal(SIGALRM, funcalrm);
alarm(1);
pause();
if (alarms != i + 1) e(24);
}
}
test55()
{
/* When a signal knocks a processes out of WAIT or PAUSE, it is supposed to
* get EINTR as error status. Check that.
*/
int n, j, i;
if (signal(8, func8) < 0) e(25);
if (n = fork()) {
/* Parent must delay to give child a chance to pause. */
if (n < 0) ex();
sleep(1);
if (kill(n, 8) < 0) e(26);
if (wait(&n) < 0) e(27);
if (signal(8, SIG_DFL) < 0) e(28);
} else {
j = pause();
if (errno != EINTR && -errno != EINTR) e(29);
exit(0);
}
}
func8()
{
}
test56()
{
int i, j, k, n;
n = fork();
if (n < 0) ex();
if (n) {
wait(&i);
i = (i >> 8) & 0377;
if (i != (n & 0377)) e(30);
} else {
i = getgid();
j = getegid();
k = (i + j + 7) & 0377;
if (setgid(k) < 0) e(31);
if (getgid() != k) e(32);
if (getegid() != k) e(33);
i = getuid();
j = geteuid();
k = (i + j + 1) & 0377;
if (setuid(k) < 0) e(34);
if (getuid() != k) e(35);
if (geteuid() != k) e(36);
i = getpid() & 0377;
if (wait(&j) != -1) e(37);
exit(i);
}
}
func11()
{
e(38);
}
test57()
{
int n;
signal(11, func11);
signal(11, SIG_IGN);
n = getpid();
kill(n, 11);
signal(11, SIG_DFL);
}
funcalrm()
{
alarms++;
}
test58()
{
/* When a signal knocks a processes out of PIPE, it is supposed to
* get EINTR as error status. Check that.
*/
int n, j, i, fd[2];
if (signal(8, func8) < 0) e(38);
pipe(fd);
if (n = fork()) {
/* Parent must delay to give child a chance to pause. */
if (n < 0) ex();
sleep(3);
if (kill(n, 8) < 0) e(39);
if (wait(&n) < 0) e(40);
if (signal(8, SIG_DFL) < 0) e(41);
close(fd[0]);
close(fd[1]);
} else {
j = read(fd[0], &n, 1);
if (errno != EINTR) e(42);
exit(0);
}
}
ex()
{
printf("Test 16. fork failed. Errno=%d\n", errno);
exit(1);
}
e(n)
int n;
{
int err_num = errno; /* save errno in case printf clobbers it */
printf("Subtest %d, error %d errno=%d ", subtest, n, errno);
errno = err_num; /* restore errno, just in case */
perror("");
if (errct++ > MAX_ERROR) {
printf("Too many errors; test aborted\n");
exit(1);
}
}