static void test(void)
{
int status;
/* unshares the mount ns */
if (unshare(CLONE_NEWNS) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "unshare failed");
/* makes sure parent mounts/umounts have no effect on a real system */
SAFE_MOUNT(cleanup, "none", "/", "none", MS_REC|MS_PRIVATE, NULL);
/* bind mounts DIRA to itself */
SAFE_MOUNT(cleanup, DIRA, DIRA, "none", MS_BIND, NULL);
/* makes mount DIRA shared */
SAFE_MOUNT(cleanup, "none", DIRA, "none", MS_SHARED, NULL);
if (do_clone_tests(CLONE_NEWNS, child_func, NULL, NULL, NULL) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "clone failed");
/* waits for child to make a slave mount */
TST_CHECKPOINT_PARENT_WAIT(cleanup, &checkpoint1);
/* bind mounts DIRB to DIRA making contents of DIRB visible
* in DIRA */
SAFE_MOUNT(cleanup, DIRB, DIRA, "none", MS_BIND, NULL);
TST_CHECKPOINT_SIGNAL_CHILD(cleanup, &checkpoint2);
TST_CHECKPOINT_PARENT_WAIT(cleanup, &checkpoint1);
SAFE_UMOUNT(cleanup, DIRA);
TST_CHECKPOINT_SIGNAL_CHILD(cleanup, &checkpoint2);
TST_CHECKPOINT_PARENT_WAIT(cleanup, &checkpoint1);
/* checks that slave mount doesn't propagate to shared mount */
if ((access(DIRA"/A", F_OK) == 0) && (access(DIRA"/B", F_OK) == -1))
tst_resm(TPASS, "propagation from slave mount passed");
else
tst_resm(TFAIL, "propagation form slave mount failed");
TST_CHECKPOINT_SIGNAL_CHILD(cleanup, &checkpoint2);
SAFE_WAIT(cleanup, &status);
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) == 0)
tst_resm(TPASS, "propagation to slave mount passed");
else
tst_resm(TFAIL, "propagation to slave mount failed");
}
if (WIFSIGNALED(status)) {
tst_resm(TBROK, "child was killed with signal %s",
tst_strsig(WTERMSIG(status)));
return;
}
SAFE_UMOUNT(cleanup, DIRA);
}
int main(int ac, char **av)
{
int lc;
char *msg;
pid_t pid;
if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
setup(av[0]);
TEST_EXP_ENOS(exp_enos);
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
if ((pid = FORK_OR_VFORK()) == -1)
tst_brkm(TBROK|TERRNO, cleanup, "fork #1 failed");
if (pid == 0) {
char *av[2];
av[0] = TEST_APP;
av[1] = NULL;
(void)execve(TEST_APP, av, NULL);
perror("execve failed");
exit(1);
}
TST_CHECKPOINT_PARENT_WAIT(NULL, &checkpoint);
TEST(creat(TEST_APP, O_WRONLY));
if (TEST_RETURN != -1) {
tst_resm(TFAIL, "creat succeeded");
} else {
if (TEST_ERRNO == ETXTBSY)
tst_resm(TPASS, "creat received EXTBSY");
else
tst_resm(TFAIL | TTERRNO, "creat failed with "
"unexpected error");
}
if (kill(pid, SIGKILL) == -1)
tst_resm(TINFO | TERRNO, "kill failed");
if (wait(NULL) == -1)
tst_brkm(TBROK|TERRNO, cleanup, "wait failed");
}
cleanup();
tst_exit();
}
int main(int ac, char **av)
{
int child_pid;
int status;
int rval;
int lc;
const char *msg;
if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
#ifdef UCLINUX
maybe_run_child(&do_child, "");
#endif
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
/* Child is in new session we are not alowed to change pgid */
if ((child_pid = FORK_OR_VFORK()) == -1)
tst_brkm(TBROK, cleanup, "fork() failed");
if (child_pid == 0) {
#ifdef UCLINUX
if (self_exec(av[0], "") < 0)
tst_brkm(TBROK, cleanup, "self_exec failed");
#else
do_child();
#endif
}
TST_CHECKPOINT_PARENT_WAIT(cleanup, &checkpoint);
rval = setpgid(child_pid, getppid());
if (rval == -1 && errno == EPERM) {
tst_resm(TPASS, "setpgid failed with EPERM");
} else {
tst_resm(TFAIL,
"retval %d, errno %d, expected errno %d",
rval, errno, EPERM);
}
TST_CHECKPOINT_SIGNAL_CHILD(cleanup, &checkpoint);
if (wait(&status) < 0)
tst_resm(TFAIL | TERRNO, "wait() for child 1 failed");
if (!(WIFEXITED(status)) || (WEXITSTATUS(status) != 0))
tst_resm(TFAIL, "child 1 failed with status %d",
WEXITSTATUS(status));
/* Child after exec() we are no longer allowed to set pgid */
if ((child_pid = FORK_OR_VFORK()) == -1)
tst_resm(TFAIL, "Fork failed");
if (child_pid == 0) {
if (execlp(TEST_APP, TEST_APP, NULL) < 0)
perror("exec failed");
exit(127);
}
TST_CHECKPOINT_PARENT_WAIT(cleanup, &checkpoint);
rval = setpgid(child_pid, getppid());
if (rval == -1 && errno == EACCES) {
tst_resm(TPASS, "setpgid failed with EACCES");
} else {
tst_resm(TFAIL,
"retval %d, errno %d, expected errno %d",
rval, errno, EACCES);
}
TST_CHECKPOINT_SIGNAL_CHILD(cleanup, &checkpoint);
if (wait(&status) < 0)
tst_resm(TFAIL | TERRNO, "wait() for child 2 failed");
if (!(WIFEXITED(status)) || (WEXITSTATUS(status) != 0))
tst_resm(TFAIL, "child 2 failed with status %d",
WEXITSTATUS(status));
}
cleanup();
tst_exit();
}
