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minix/test/test2.c
Thomas Veerman 958b25be50 - Introduce support for sticky bit. 
- Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly.
- Clean up MFS by removing old, dead code (backwards compatibility is broken by
  the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all
  functions have proper banners and prototypes.
- VFS should always provide a (syntactically) valid path to the FS; no need for
  the FS to do sanity checks when leaving/entering mount points.
- Fix several bugs in MFS:
  - Several path lookup bugs in MFS.
  - A link can be too big for the path buffer.
  - A mountpoint can become inaccessible when the creation of a new inode
    fails, because the inode already exists and is a mountpoint.
- Introduce support for supplemental groups.
- Add test 46 to test supplemental group functionality (and removed obsolete
  suppl. tests from test 2).
- Clean up VFS (not everything is done yet).
- ISOFS now opens device read-only. This makes the -r flag in the mount command
  unnecessary (but will still report to be mounted read-write).
- Introduce PipeFS. PipeFS is a new FS that handles all anonymous and
  named pipes. However, named pipes still reside on the (M)FS, as they are part
  of the file system on disk. To make this work VFS now has a concept of
  'mapped' inodes, which causes read, write, truncate and stat requests to be
  redirected to the mapped FS, and all other requests to the original FS.
2009-12-20 20:27:14 +00:00

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/* test 2 */
#include <sys/types.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#define ITERATIONS 5
#define MAX_ERROR 4
int is, array[4], parsigs, parcum, sigct, cumsig, errct, subtest;
int iteration, kk = 0, errct = 0;
char buf[2048];
_PROTOTYPE(int main, (int argc, char *argv []));
_PROTOTYPE(void test2a, (void));
_PROTOTYPE(void test2b, (void));
_PROTOTYPE(void test2c, (void));
_PROTOTYPE(void test2d, (void));
_PROTOTYPE(void test2e, (void));
_PROTOTYPE(void test2f, (void));
_PROTOTYPE(void test2g, (void));
_PROTOTYPE(void sigpip, (int s));
_PROTOTYPE(void quit, (void));
_PROTOTYPE(void e, (int n));
int main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
sync();
if (argc == 2) m = atoi(argv[1]);
printf("Test 2 ");
fflush(stdout); /* have to flush for child's benefit */
system("rm -rf DIR_02; mkdir DIR_02");
chdir("DIR_02");
for (i = 0; i < ITERATIONS; i++) {
iteration = i;
if (m & 0001) test2a();
if (m & 0002) test2b();
if (m & 0004) test2c();
if (m & 0010) test2d();
if (m & 0020) test2e();
if (m & 0040) test2f();
if (m & 0100) test2g();
}
subtest = 100;
if (cumsig != ITERATIONS) e(101);
quit();
return(-1); /* impossible */
}
void test2a()
{
/* Test pipes */
int fd[2];
int n, i, j, q = 0;
subtest = 1;
if (pipe(fd) < 0) {
printf("pipe error. errno= %d\n", errno);
errct++;
quit();
}
i = fork();
if (i < 0) {
printf("fork failed\n");
errct++;
quit();
}
if (i != 0) {
/* Parent code */
close(fd[0]);
for (i = 0; i < 2048; i++) buf[i] = i & 0377;
for (q = 0; q < 8; q++) {
if (write(fd[1], buf, 2048) < 0) {
printf("write pipe err. errno=%d\n", errno);
errct++;
quit();
}
}
close(fd[1]);
wait(&q);
if (q != 256 * 58) {
printf("wrong exit code %d\n", q);
errct++;
quit();
}
} else {
/* Child code */
close(fd[1]);
for (q = 0; q < 32; q++) {
n = read(fd[0], buf, 512);
if (n != 512) {
printf("read yielded %d bytes, not 512\n", n);
errct++;
quit();
}
for (j = 0; j < n; j++)
if ((buf[j] & 0377) != (kk & 0377)) {
printf("wrong data: %d %d %d \n ",
j, buf[j] & 0377, kk & 0377);
} else {
kk++;
}
}
exit(58);
}
}
void test2b()
{
int fd[2], n;
char buf[4];
subtest = 2;
sigct = 0;
signal(SIGPIPE, sigpip);
pipe(fd);
if (fork()) {
/* Parent */
close(fd[0]);
while (sigct == 0) {
write(fd[1], buf, 1);
}
wait(&n);
} else {
/* Child */
close(fd[0]);
close(fd[1]);
exit(0);
}
}
void test2c()
{
int n;
subtest = 3;
signal(SIGINT, SIG_DFL);
is = 0;
if ((array[is++] = fork()) > 0) {
if ((array[is++] = fork()) > 0) {
if ((array[is++] = fork()) > 0) {
if ((array[is++] = fork()) > 0) {
signal(SIGINT, SIG_IGN);
kill(array[0], SIGINT);
kill(array[1], SIGINT);
kill(array[2], SIGINT);
kill(array[3], SIGINT);
wait(&n);
wait(&n);
wait(&n);
wait(&n);
} else {
pause();
}
} else {
pause();
}
} else {
pause();
}
} else {
pause();
}
}
void test2d()
{
int pid, stat_loc, s;
/* Test waitpid. */
subtest = 4;
/* Test waitpid(pid, arg2, 0) */
pid = fork();
if (pid < 0) e(1);
if (pid > 0) {
/* Parent. */
s = waitpid(pid, &stat_loc, 0);
if (s != pid) e(2);
if (WIFEXITED(stat_loc) == 0) e(3);
if (WIFSIGNALED(stat_loc) != 0) e(4);
if (WEXITSTATUS(stat_loc) != 22) e(5);
} else {
/* Child */
exit(22);
}
/* Test waitpid(-1, arg2, 0) */
pid = fork();
if (pid < 0) e(6);
if (pid > 0) {
/* Parent. */
s = waitpid(-1, &stat_loc, 0);
if (s != pid) e(7);
if (WIFEXITED(stat_loc) == 0) e(8);
if (WIFSIGNALED(stat_loc) != 0) e(9);
if (WEXITSTATUS(stat_loc) != 33) e(10);
} else {
/* Child */
exit(33);
}
/* Test waitpid(0, arg2, 0) */
pid = fork();
if (pid < 0) e(11);
if (pid > 0) {
/* Parent. */
s = waitpid(0, &stat_loc, 0);
if (s != pid) e(12);
if (WIFEXITED(stat_loc) == 0) e(13);
if (WIFSIGNALED(stat_loc) != 0) e(14);
if (WEXITSTATUS(stat_loc) != 44) e(15);
} else {
/* Child */
exit(44);
}
/* Test waitpid(0, arg2, WNOHANG) */
signal(SIGTERM, SIG_DFL);
pid = fork();
if (pid < 0) e(16);
if (pid > 0) {
/* Parent. */
s = waitpid(0, &stat_loc, WNOHANG);
if (s != 0) e(17);
if (kill(pid, SIGTERM) != 0) e(18);
if (waitpid(pid, &stat_loc, 0) != pid) e(19);
if (WIFEXITED(stat_loc) != 0) e(20);
if (WIFSIGNALED(stat_loc) == 0) e(21);
if (WTERMSIG(stat_loc) != SIGTERM) e(22);
} else {
/* Child */
pause();
}
/* Test some error conditions. */
errno = 9999;
if (waitpid(0, &stat_loc, 0) != -1) e(23);
if (errno != ECHILD) e(24);
errno = 9999;
if (waitpid(0, &stat_loc, WNOHANG) != -1) e(25);
if (errno != ECHILD) e(26);
}
void test2e()
{
int pid1, pid2, stat_loc, s;
/* Test waitpid with two children. */
subtest = 5;
if (iteration > 1) return; /* slow test, don't do it too much */
if ( (pid1 = fork())) {
/* Parent. */
if ( (pid2 = fork()) ) {
/* Parent. Collect second child first. */
s = waitpid(pid2, &stat_loc, 0);
if (s != pid2) e(1);
if (WIFEXITED(stat_loc) == 0) e(2);
if (WIFSIGNALED(stat_loc) != 0) e(3);
if (WEXITSTATUS(stat_loc) != 222) e(4);
/* Now collect first child. */
s = waitpid(pid1, &stat_loc, 0);
if (s != pid1) e(5);
if (WIFEXITED(stat_loc) == 0) e(6);
if (WIFSIGNALED(stat_loc) != 0) e(7);
if (WEXITSTATUS(stat_loc) != 111) e(8);
} else {
/* Child 2. */
sleep(2); /* child 2 delays before exiting. */
exit(222);
}
} else {
/* Child 1. */
exit(111); /* child 1 exits immediately */
}
}
void test2f()
{
/* test getpid, getppid, getuid, etc. */
pid_t pid, pid1, ppid, cpid, stat_loc, err;
subtest = 6;
errno = -2000;
err = 0;
pid = getpid();
if ( (pid1 = fork())) {
/* Parent. Do nothing. */
if (wait(&stat_loc) != pid1) e(1);
if (WEXITSTATUS(stat_loc) != (pid1 & 0377)) e(2);
} else {
/* Child. Get ppid. */
cpid = getpid();
ppid = getppid();
if (ppid != pid) err = 3;
if (cpid == ppid) err = 4;
exit(cpid & 0377);
}
if (err != 0) e(err);
}
void test2g()
{
/* test time(), times() */
time_t t1, t2;
clock_t t3, t4;
struct tms tmsbuf;
subtest = 7;
errno = -7000;
/* First time(). */
t1 = -1;
t2 = -2;
t1 = time(&t2);
if (t1 < 650000000L) e(1); /* 650000000 is Sept. 1990 */
if (t1 != t2) e(2);
t1 = -1;
t1 = time( (time_t *) NULL);
if (t1 < 650000000L) e(3);
t3 = times(&tmsbuf);
sleep(1);
t2 = time( (time_t *) NULL);
if (t2 < 0L) e(4);
if (t2 - t1 < 1) e(5);
/* Now times(). */
t4 = times(&tmsbuf);
if ( t4 == (clock_t) -1) e(6);
if (t4 - t3 < CLOCKS_PER_SEC) e(7);
if (tmsbuf.tms_utime < 0) e(8);
if (tmsbuf.tms_stime < 0) e(9);
if (tmsbuf.tms_cutime < 0) e(10);
if (tmsbuf.tms_cstime < 0) e(11);
}
void sigpip(s)
int s; /* for ANSI */
{
sigct++;
cumsig++;
}
void quit()
{
chdir("..");
system("rm -rf DIR*");
if (errct == 0) {
printf("ok\n");
exit(0);
} else {
printf("%d errors\n", errct);
exit(4);
}
}
void 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");
chdir("..");
system("rm -rf DIR*");
exit(1);
}
}
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