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/*
* Copyright © 2019 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "igt_core.h"
#include "drmtest.h"
#include "igt_tests_common.h"
char test[] = "test";
char *fake_argv[] = { test };
int fake_argc = ARRAY_SIZE(fake_argv);
int fork_type_dyn;
__noreturn static void igt_fork_vs_skip(void)
{
igt_simple_init(fake_argc, fake_argv);
if (fork_type_dyn) {
igt_multi_fork(i, 1) {
igt_skip("skipping multi-fork");
}
} else {
igt_fork(i, 1) {
igt_skip("skipping fork");
}
}
igt_waitchildren();
igt_exit();
}
__noreturn static void igt_fork_vs_assert(void)
{
igt_simple_init(fake_argc, fake_argv);
if (fork_type_dyn) {
igt_multi_fork(i, 1) {
igt_assert(0);
}
} else {
igt_fork(i, 1) {
igt_assert(0);
}
}
igt_waitchildren();
igt_exit();
}
__noreturn static void igt_fork_leak(void)
{
igt_simple_init(fake_argc, fake_argv);
if (fork_type_dyn) {
igt_multi_fork(i, 1) {
sleep(10);
}
} else {
igt_fork(i, 1) {
sleep(10);
}
}
igt_exit();
}
__noreturn static void plain_fork_leak(void)
{
int pid;
igt_simple_init(fake_argc, fake_argv);
switch (pid = fork()) {
case -1:
internal_assert(0);
case 0:
sleep(1);
default:
exit(0);
}
igt_exit();
}
__noreturn static void igt_fork_timeout_leak(void)
{
igt_simple_init(fake_argc, fake_argv);
if (fork_type_dyn) {
igt_multi_fork(i, 1) {
sleep(10);
}
} else {
igt_fork(i, 1) {
sleep(10);
}
}
igt_waitchildren_timeout(1, "library test");
igt_exit();
}
__noreturn static void subtest_leak(void)
{
pid_t *children =
mmap(0, 4096, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
const int num_children = 4096 / sizeof(*children);
igt_subtest_init(fake_argc, fake_argv);
igt_subtest("fork-leak") {
if (fork_type_dyn) {
igt_multi_fork(child, num_children)
children[child] = getpid();
} else {
igt_fork(child, num_children)
children[child] = getpid();
}
/* leak the children */
igt_assert(0);
}
/* We expect the exit_subtest to cleanup after the igt_fork and igt_multi_fork */
for (int i = 0; i < num_children; i++) {
if (children[i] > 0)
assert(kill(children[i], 0) == -1 && errno == ESRCH);
}
munmap(children, 4096);
igt_exit();
}
int main(int argc, char **argv)
{
int ret;
for (fork_type_dyn = 0; fork_type_dyn <= 1; ++fork_type_dyn) {
printf("Checking %sfork ...\n", fork_type_dyn ? "multi-" : "");
printf("\ncheck that igt_assert is forwarded\n");
ret = do_fork(igt_fork_vs_assert);
internal_assert_wexited(ret, IGT_EXIT_FAILURE);
printf("\ncheck that igt_skip within a fork blows up\n");
ret = do_fork(igt_fork_vs_skip);
internal_assert_wexited(ret, SIGABRT + 128);
printf("\ncheck that failure to clean up fails\n");
ret = do_fork(igt_fork_leak);
internal_assert_wsignaled(ret, SIGABRT);
printf("\ncheck that igt_waitchildren_timeout cleans up\n");
ret = do_fork(igt_fork_timeout_leak);
internal_assert_wexited(ret, SIGKILL + 128);
printf("\ncheck that any other process leaks are caught\n");
ret = do_fork(plain_fork_leak);
internal_assert_wsignaled(ret, SIGABRT);
printf("\ncheck subtest leak %d\n", fork_type_dyn);
ret = do_fork(subtest_leak);
internal_assert_wexited(ret, IGT_EXIT_FAILURE); /* not asserted! */
}
printf("SUCCESS all tests passed\n");
}
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