4lDO2
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
#include <assert.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <pthread.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <errno.h>
|
|
|
|
#include "test_helpers.h"
|
|
|
|
#define THE_SIG SIGRTMIN
|
|
|
|
volatile sig_atomic_t num = 1;
|
|
|
|
int parent;
|
|
|
|
void action(int sig, siginfo_t *info, void *context) {
|
|
(void)context;
|
|
assert(sig == THE_SIG);
|
|
assert(info != NULL);
|
|
assert(context != NULL);
|
|
assert(info->si_signo == THE_SIG);
|
|
assert(info->si_value.sival_int == num);
|
|
assert(info->si_code == SI_QUEUE);
|
|
assert(info->si_pid == parent);
|
|
num++;
|
|
write(1, "action\n", 7);
|
|
}
|
|
|
|
int main(void) {
|
|
int status, fds[2];
|
|
|
|
status = pipe(fds);
|
|
ERROR_IF(pipe, status, == -1);
|
|
|
|
parent = getpid();
|
|
assert(parent != 0);
|
|
|
|
int child = fork();
|
|
ERROR_IF(fork, child, == -1);
|
|
|
|
status = close(fds[child == 0 ? 0 : 1]);
|
|
ERROR_IF(close, status, == -1);
|
|
|
|
sigset_t set;
|
|
status = sigfillset(&set);
|
|
ERROR_IF(sigfillset, status, == -1);
|
|
status = sigdelset(&set, SIGSEGV);
|
|
ERROR_IF(sigdelset, status, == -1);
|
|
status = sigdelset(&set, SIGBUS);
|
|
ERROR_IF(sigdelset, status, == -1);
|
|
status = sigdelset(&set, SIGILL);
|
|
ERROR_IF(sigdelset, status, == -1);
|
|
status = sigdelset(&set, SIGFPE);
|
|
ERROR_IF(sigdelset, status, == -1);
|
|
status = sigdelset(&set, SIGINT);
|
|
ERROR_IF(sigdelset, status, == -1);
|
|
status = sigprocmask(SIG_SETMASK, &set, NULL);
|
|
ERROR_IF(sigprocmask, status, == -1);
|
|
|
|
struct sigaction sa;
|
|
memcpy(&sa.sa_mask, &set, sizeof (sigset_t));
|
|
sa.sa_flags = SA_SIGINFO;
|
|
sa.sa_sigaction = action;
|
|
|
|
status = sigaction(THE_SIG, &sa, NULL);
|
|
ERROR_IF(sigaction, status, == -1);
|
|
|
|
if (child == 0) {
|
|
status = sigemptyset(&set);
|
|
ERROR_IF(sigemptyset, status, == -1);
|
|
while (num != 32) {
|
|
}
|
|
status = write(fds[1], "A", 1);
|
|
ERROR_IF(write, status, == -1);
|
|
} else {
|
|
for (int n = 1; n <= 32; n++) {
|
|
status = sigqueue(child, THE_SIG, (union sigval){ .sival_int = n });
|
|
ERROR_IF(sigqueue, status, == -1);
|
|
}
|
|
char buf[1];
|
|
status = read(fds[0], buf, 1);
|
|
ERROR_IF(read, status, == -1);
|
|
}
|
|
|
|
return 0;
|
|
}
|