int getchild(int group, int child, int children)
{
int pid;
pid = FORK_OR_VFORK();
if (pid < 0) {
massmurder(); /* kill the kids */
tst_brkm(TBROK, cleanup,
"\tFork failed (may be OK if under stress)");
tst_exit();
} else if (pid == 0) { /* child does this */
switch (children % NCHILD) {
case 0:
#ifdef UCLINUX
if (self_exec(argv0, "nd", 1, nfiles) < 0) {
massmurder();
tst_brkm(TBROK, cleanup, "\tself_exec failed");
tst_exit();
}
#else
dochild1(); /* create existing directories */
#endif
break; /* so lint won't complain */
case 1:
#ifdef UCLINUX
if (self_exec(argv0, "n", 2) < 0) {
massmurder();
tst_brkm(TBROK, cleanup, "\tself_exec failed");
tst_exit();
}
#else
dochild2(); /* remove nonexistant directories */
#endif
break;
case 2:
#ifdef UCLINUX
if (self_exec(argv0, "nd", 3, group) < 0) {
massmurder();
tst_brkm(TBROK, cleanup, "\tself_exec failed");
tst_exit();
}
#else
dochild3(group); /* create/delete directories */
#endif
break;
default:
tst_brkm(TFAIL, cleanup,
"Test not inplemented for child %d", child);
exit(1);
break;
}
exit(1); /* If child gets here, something wrong */
}
pidlist[children] = pid;
return 0;
}
int runtest(void)
{
int i, j;
int count, child, status;
char tmpdir[MAXPATHLEN];
/* Create permanent directories with holes in directory structure */
for (j = 0; j < nfiles; j++) {
sprintf(tmpdir, DIR_NAME, j);
TEST(mkdir(tmpdir, MODE_RWX));
if (TEST_RETURN < 0) {
tst_brkm(TFAIL, cleanup,
"Error creating permanent directories, ERRNO = %d",
TEST_ERRNO);
}
if ((j % NCHILD) != 0) {
if (rmdir(tmpdir) < 0) {
tst_brkm(TFAIL, cleanup,
"Error removing directory, ERRNO = %d",
errno);
}
}
}
parent_pid = getpid();
/* allocate space for list of child pid's */
if ((pidlist = malloc((child_groups * NCHILD) * sizeof(int))) ==
NULL) {
tst_brkm(TWARN, NULL,
"\tMalloc failed (may be OK if under stress)");
}
child_count = 0;
for (j = 0; j < child_groups; j++) {
for (i = 0; i < NCHILD; i++) {
getchild(j, i, child_count);
child_count++;
}
}
/* If signal already received, skip to cleanup */
if (!sigchld && !sigterm) {
if (test_time) {
/* To get out of sleep if signal caught */
if (!setjmp(env_buf)) {
jump++;
sleep(test_time);
}
} else {
pause();
}
}
/* Reset signals since we are about to clean-up and to avoid
* problem with wait call * $
* */
if (signal(SIGTERM, SIG_IGN) == SIG_ERR) {
tst_brkm(TFAIL, cleanup,
"Error resetting SIGTERM signal, ERRNO = %d", errno);
}
if (signal(SIGCLD, SIG_DFL) == SIG_ERR) {
tst_brkm(TFAIL, cleanup,
"Error resetting SIGCLD signal, ERRNO = %d", errno);
}
if (test_time) {
sleep(test_time);
}
/* Clean up children */
massmurder();
/*
* Watch children finish and show returns.
*/
count = 0;
while (1) {
if ((child = wait(&status)) > 0) {
if (status != 0) {
tst_brkm(TWARN,
NULL,
"\tChild{%d} exited status = %0x",
child, status);
}
count++;
} else {
if (errno != EINTR) {
break;
}
tst_resm(TINFO, "\tSignal detected during wait");
}
}
/*
* Make sure correct number of children exited.
*/
if (count != child_count) {
tst_resm(TWARN, "\tWrong number of children waited on!");
tst_brkm(TWARN, NULL, "\tSaw %d, expected %d", count,
NCHILD);
}
/* Check for core file in test directory. */
if (access("core", 0) == 0) {
tst_brkm(TWARN, NULL, "\tCore file found in test directory.");
}
/* Remove expected files */
for (j = 0; j < nfiles; j += NCHILD) {
sprintf(tmpdir, DIR_NAME, j);
if (rmdir(tmpdir) < 0) {
tst_brkm(TWARN,
NULL,
"\tError removing expected directory, ERRNO = %d",
errno);
}
}
tst_resm(TPASS, "PASS");
return 0;
}