struct args {
sem_t sem;
int sock;
+ mqd_t mqd;
+ int err;
const struct sigevent *sev;
};
int s = args->sock;
void (*func)(union sigval) = args->sev->sigev_notify_function;
union sigval val = args->sev->sigev_value;
+ struct sigevent sev2;
+ static const char zeros[32];
+ int err;
+
+ sev2.sigev_notify = SIGEV_THREAD;
+ sev2.sigev_signo = s;
+ sev2.sigev_value.sival_ptr = (void *)&zeros;
+ args->err = err = -__syscall(SYS_mq_notify, args->mqd, &sev2);
sem_post(&args->sem);
+ if (err) return 0;
+
+ pthread_detach(pthread_self());
n = recv(s, buf, sizeof(buf), MSG_NOSIGNAL|MSG_WAITALL);
close(s);
if (n==sizeof buf && buf[sizeof buf - 1] == 1)
pthread_attr_t attr;
pthread_t td;
int s;
- struct sigevent sev2;
- static const char zeros[32];
int cs;
+ sigset_t allmask, origmask;
if (!sev || sev->sigev_notify != SIGEV_THREAD)
return syscall(SYS_mq_notify, mqd, sev);
s = socket(AF_NETLINK, SOCK_RAW|SOCK_CLOEXEC, 0);
if (s < 0) return -1;
args.sock = s;
+ args.mqd = mqd;
if (sev->sigev_notify_attributes) attr = *sev->sigev_notify_attributes;
else pthread_attr_init(&attr);
- pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
sem_init(&args.sem, 0, 0);
+ sigfillset(&allmask);
+ pthread_sigmask(SIG_BLOCK, &allmask, &origmask);
if (pthread_create(&td, &attr, start, &args)) {
__syscall(SYS_close, s);
+ pthread_sigmask(SIG_SETMASK, &origmask, 0);
errno = EAGAIN;
return -1;
}
+ pthread_sigmask(SIG_SETMASK, &origmask, 0);
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
sem_wait(&args.sem);
- pthread_setcancelstate(cs, 0);
sem_destroy(&args.sem);
- sev2.sigev_notify = SIGEV_THREAD;
- sev2.sigev_signo = s;
- sev2.sigev_value.sival_ptr = (void *)&zeros;
-
- if (syscall(SYS_mq_notify, mqd, &sev2) < 0) {
- pthread_cancel(td);
+ if (args.err) {
__syscall(SYS_close, s);
+ pthread_join(td, 0);
+ pthread_setcancelstate(cs, 0);
+ errno = args.err;
return -1;
}
+ pthread_setcancelstate(cs, 0);
return 0;
}