int main(int argc, char ** argv)
{
int sock, acc_sock, ret;
pid_t pid;
uint32_t crc;
uint8_t buf[1000];
test_init(argc, argv);
sock = setup_srv_sock();
if (sock < 0)
exit(1);
pid = test_fork();
if (pid < 0) {
pr_perror("can't fork");
exit(1);
}
if (pid == 0) { /* child writes to the unlinked socket and returns */
close(sock);
sock = setup_clnt_sock();
if (sock < 0)
_exit(1);
test_waitsig();
crc = ~0;
datagen(buf, sizeof(buf), &crc);
if (write(sock, buf, sizeof(buf)) != sizeof(buf)) {
pr_perror("can't write to socket");
exit(errno);
}
close(sock);
exit(0);
}
acc_sock = accept(sock, NULL, NULL);
if (acc_sock < 0) {
pr_perror("can't accept() the connection on \"%s\"", filename);
goto out_kill;
}
close(sock);
sock = acc_sock;
if (unlink(filename)) {
pr_perror("can't unlink %s", filename);
goto out_kill;
}
test_daemon();
test_waitsig();
if (kill(pid, SIGTERM)) {
fail("terminating the child failed: %m\n");
goto out;
}
if (wait(&ret) != pid) {
fail("wait() returned wrong pid %d: %m\n", pid);
goto out;
}
if (WIFEXITED(ret)) {
ret = WEXITSTATUS(ret);
if (ret) {
fail("child exited with nonzero code %d (%s)\n", ret, strerror(ret));
goto out;
}
}
if (WIFSIGNALED(ret)) {
fail("child exited on unexpected signal %d\n", WTERMSIG(ret));
goto out;
}
if (read(sock, buf, sizeof(buf)) != sizeof(buf)) {
fail("can't read %s: %m\n", filename);
goto out;
}
crc = ~0;
if (datachk(buf, sizeof(buf), &crc)) {
fail("CRC mismatch\n");
goto out;
}
if (close(sock)) {
fail("close failed: %m\n");
goto out;
}
if (unlink(filename) != -1 || errno != ENOENT) {
fail("file %s should have been deleted before migration: unlink: %m\n", filename);
goto out;
}
pass();
out_kill:
kill(pid, SIGTERM);
out:
close(sock);
return 0;
}
int main(int argc, char ** argv)
{
int sock, acc_sock, ret;
char path[256];
pid_t pid;
uint32_t crc;
uint8_t buf[1000];
test_init(argc, argv);
if (snprintf(path, sizeof(path), "%s/foo", dirname) >= sizeof(path)) {
err("directory name \"%s\"is too long", dirname);
exit(1);
}
if (mkdir(dirname, 0700)) {
err("can't make directory %s: %m\n", dirname);
exit(1);
}
sock = setup_srv_sock(path);
if (sock < 0)
goto out;
pid = fork();
if (pid < 0) {
err("can't fork: %m\n");
goto out;
}
if (pid == 0) { /* child writes to the overmounted socket and returns */
close(sock);
sock = setup_clnt_sock(path);
if (sock < 0)
_exit(1);
test_waitsig();
crc = ~0;
datagen(buf, sizeof(buf), &crc);
if (write(sock, buf, sizeof(buf)) != sizeof(buf))
_exit(errno);
close(sock);
_exit(0);
}
acc_sock = accept(sock, NULL, NULL);
if (acc_sock < 0) {
err("can't accept() the connection on \"%s\": %m", path);
goto out_kill;
}
close(sock);
sock = acc_sock;
if (mount("rien", dirname, "tmpfs", 0, 0) < 0) {
err("can't mount tmpfs over %s: %m", dirname);
goto out_kill;
}
test_daemon();
test_waitsig();
if (kill(pid, SIGTERM)) {
fail("terminating the child failed: %m\n");
goto out;
}
if (wait(&ret) != pid) {
fail("wait() returned wrong pid %d: %m\n", pid);
goto out;
}
if (WIFEXITED(ret)) {
ret = WEXITSTATUS(ret);
if (ret) {
fail("child exited with nonzero code %d (%s)\n", ret,
strerror(ret));
goto out;
}
}
if (WIFSIGNALED(ret)) {
fail("child exited on unexpected signal %d\n", WTERMSIG(ret));
goto out;
}
if (read(sock, buf, sizeof(buf)) != sizeof(buf)) {
fail("can't read %s: %m\n", path);
goto out;
}
crc = ~0;
if (datachk(buf, sizeof(buf), &crc)) {
fail("CRC mismatch\n");
goto out;
}
if (umount(dirname) < 0) {
fail("can't umount %s: %m", dirname);
goto out;
}
if (close(sock) < 0) {
fail("can't close %s: %m", path);
goto out;
}
if (unlink(path) < 0) {
fail("can't unlink %s: %m", path);
goto out;
}
pass();
out_kill:
kill(pid, SIGKILL);
out:
close(sock);
unlink(path);
rmdir(dirname);
return 0;
}