Red Bear OS
1b3e94a20d
From release 0.1.0 pre-patched archive. This includes all Red Bear modifications previously maintained as patches in local/patches/relibc/.
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#include <assert.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
#include "test_helpers.h"
|
|
|
|
static void wait_until_child_exits(pid_t pid) {
|
|
siginfo_t info;
|
|
for (int i = 0; i < 50; ++i) {
|
|
info.si_pid = 0;
|
|
int ret = waitid(P_PID, pid, &info, WEXITED | WNOHANG | WNOWAIT);
|
|
ERROR_IF(waitid, ret, == -1);
|
|
if (info.si_pid == pid) {
|
|
assert(info.si_code == CLD_EXITED);
|
|
assert(info.si_status == 42);
|
|
return;
|
|
}
|
|
usleep(10000);
|
|
}
|
|
assert(!"waitid never observed child exit");
|
|
}
|
|
|
|
int main(void) {
|
|
pid_t pid = fork();
|
|
ERROR_IF(fork, pid, == -1);
|
|
|
|
if (pid == 0) {
|
|
usleep(50000);
|
|
_Exit(42);
|
|
}
|
|
|
|
siginfo_t info;
|
|
info.si_pid = 0;
|
|
int ret = waitid(P_PID, pid, &info, WEXITED | WNOHANG | WNOWAIT);
|
|
ERROR_IF(waitid, ret, == -1);
|
|
assert(info.si_pid == 0);
|
|
|
|
wait_until_child_exits(pid);
|
|
|
|
int status = 0;
|
|
pid_t waited = waitpid(pid, &status, 0);
|
|
ERROR_IF(waitpid, waited, == -1);
|
|
assert(waited == pid);
|
|
assert(WIFEXITED(status));
|
|
assert(WEXITSTATUS(status) == 42);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|