static void test_clone_thread(int t)
{
pid_t child;
int i, status;
fflush(stdout);
child = FORK_OR_VFORK();
switch (child) {
case 0:
tgid = ltp_syscall(__NR_getpid);
tst_result = -1;
clone_child(&test_cases[t], 0);
for (i = 0; i < 5000; i++) {
sched_yield();
usleep(1000);
if (tst_result != -1)
break;
}
ltp_syscall(__NR_exit, tst_result);
case -1:
tst_brkm(TBROK | TERRNO, NULL, "test_clone_thread fork");
default:
status = wait4child(child);
if (status == 0) {
tst_resm(TPASS, "test %s", test_cases[t].name);
} else {
tst_resm(TFAIL, "test %s, status: %d",
test_cases[t].name, status);
}
};
}
static void test_clone_stopped(int t)
{
int i;
int status;
int flag;
pid_t child;
stopped_flag = 0;
child = clone_child(&test_cases[t], 1);
/* give the kernel scheduler chance to run the CLONE_STOPPED thread*/
for (i = 0; i < 100; i++) {
sched_yield();
usleep(1000);
}
flag = stopped_flag;
if (kill(child, SIGCONT) != 0)
tst_brkm(TBROK | TERRNO, cleanup, "kill SIGCONT failed");
status = wait4child(child);
if (status == 0 && flag == 0) {
tst_resm(TPASS, "test %s", test_cases[t].name);
} else {
tst_resm(TFAIL, "test %s, status: %d, flag: %d",
test_cases[t].name, status, flag);
}
}
static void test_clone_parent(int t)
{
int status;
pid_t child;
fflush(stdout);
child = FORK_OR_VFORK();
switch (child) {
case 0:
parent_ppid = getppid();
clone_child(&test_cases[t], 0);
exit(0);
case -1:
tst_brkm(TBROK | TERRNO, NULL, "test_clone_parent fork");
default:
status = wait4child(child);
if (status == 0) {
/* wait for CLONE_PARENT child */
status = wait4child(-1);
if (status == 0) {
tst_resm(TPASS, "test %s", test_cases[t].name);
} else {
tst_resm(TFAIL, "test %s, status: %d",
test_cases[t].name, status);
}
} else {
tst_resm(TFAIL, "test %s, status: %d",
test_cases[t].name, status);
}
};
}
static int child(void *_arg)
{
char buf[sizeof(TEST_STRING)];
pid_t pid, pid2;
int status;
pid = clone_child(child2, CLONE_FILES);
if (pid < 0)
return 1;
pid2 = clone_child(child3, 0);
if (pid < 0)
return 1;
forked();
test_waitsig();
kill(pid2, SIGTERM);
kill(pid, SIGTERM);
waitpid(pid2, &status, 0);
if (status) {
fail("The child3 returned %d\n", status);
return 1;
}
waitpid(pid, &status, 0);
if (status) {
fail("The child2 returned %d\n", status);
return 1;
}
if (read(TEST_FD, buf, sizeof(TEST_STRING)) != sizeof(TEST_STRING)) {
pr_perror("Unable to read from %d", TEST_FD);
return 1;
}
if (close(TEST_FD) == -1) {
pr_perror("Unable to close(%d)", TEST_FD);
return 1;
}
return 0;
}
static void test_clone_tid(int t)
{
int status;
pid_t child;
child = clone_child(&test_cases[t], 1);
status = wait4child(child);
if (status == 0) {
tst_resm(TPASS, "test %s", test_cases[t].name);
} else {
tst_resm(TFAIL, "test %s, status: %d",
test_cases[t].name, status);
}
}
int main(int argc, char ** argv)
{
int status;
pid_t pid, pid2;
int fd, i;
test_init(argc, argv);
pid = clone_child(child, CLONE_FILES);
if (pid < 0)
return 1;
pid2 = clone_child(child2, CLONE_FILES);
if (pid2 < 0)
return 1;
test_daemon();
test_waitsig();
fd = open(filename, O_RDWR | O_CREAT, 0666);
if (fd == -1) {
err("Can't open /dev/zero\n");
return -1;
}
for (i = 0; i < 3; i++)
if (write(fd, TEST_STRING, sizeof(TEST_STRING)) != sizeof(TEST_STRING)) {
err("Unable to write a test string\n");
return -1;
}
fd = dup2(fd, TEST_FD);
if (fd == -1) {
err("Can't dup fd to %d\n", fd, TEST_FD);
return -1;
}
lseek(fd, 0, SEEK_SET);
kill(pid2, SIGTERM);
waitpid(pid2, &status, 0);
kill(pid, SIGTERM);
if (status) {
fail("The child returned %d\n", status);
return 1;
}
waitpid(pid, &status, 0);
if (status) {
fail("The child returned %d\n", status);
return 1;
}
if (close(TEST_FD) == 0) {
fail("%d was not closed\n", TEST_FD);
return 1;
}
pass();
return 0;
}