mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-29 15:10:57 +01:00
116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
/* $FreeBSD$ */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/event.h>
|
|
#include <sys/select.h>
|
|
#include <sys/wait.h>
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <mqueue.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#define MQNAME "/mytstqueue4"
|
|
#define LOOPS 1000
|
|
#define PRIO 10
|
|
|
|
void sighandler(int sig)
|
|
{
|
|
write(1, "timeout\n", 8);
|
|
_exit(1);
|
|
}
|
|
|
|
int main()
|
|
{
|
|
mqd_t mq;
|
|
int status;
|
|
struct mq_attr attr;
|
|
int pid;
|
|
fd_set set;
|
|
int kq;
|
|
struct kevent kev;
|
|
|
|
mq_unlink(MQNAME);
|
|
|
|
attr.mq_maxmsg = 5;
|
|
attr.mq_msgsize = 128;
|
|
mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr);
|
|
if (mq == (mqd_t) -1)
|
|
err(1, "mq_open()");
|
|
status = mq_getattr(mq, &attr);
|
|
if (status)
|
|
err(1, "mq_getattr()");
|
|
pid = fork();
|
|
if (pid == 0) { /* child */
|
|
int prio, j, i;
|
|
char *buf;
|
|
|
|
mq_close(mq);
|
|
kq = kqueue();
|
|
mq = mq_open(MQNAME, O_RDWR);
|
|
if (mq == (mqd_t)-1)
|
|
err(1, "child: mq_open");
|
|
EV_SET(&kev, __mq_oshandle(mq), EVFILT_READ, EV_ADD, 0, 0, 0);
|
|
status = kevent(kq, &kev, 1, NULL, 0, NULL);
|
|
if (status == -1)
|
|
err(1, "child: kevent");
|
|
buf = malloc(attr.mq_msgsize);
|
|
for (j = 0; j < LOOPS; ++j) {
|
|
alarm(3);
|
|
status = kevent(kq, NULL, 0, &kev, 1, NULL);
|
|
if (status != 1)
|
|
err(1, "child: kevent 2");
|
|
status = mq_receive(mq, buf, attr.mq_msgsize, &prio);
|
|
if (status == -1)
|
|
err(2, "child: mq_receive");
|
|
for (i = 0; i < attr.mq_msgsize; ++i)
|
|
if (buf[i] != i)
|
|
err(3, "child: message data corrupted");
|
|
if (prio != PRIO)
|
|
err(4, "child: priority is incorrect: %d",
|
|
prio);
|
|
}
|
|
alarm(0);
|
|
free(buf);
|
|
mq_close(mq);
|
|
return (0);
|
|
} else if (pid == -1) {
|
|
err(1, "fork()");
|
|
} else {
|
|
char *buf;
|
|
int i, j, prio;
|
|
|
|
signal(SIGALRM, sighandler);
|
|
kq = kqueue();
|
|
EV_SET(&kev, __mq_oshandle(mq), EVFILT_WRITE, EV_ADD, 0, 0, 0);
|
|
status = kevent(kq, &kev, 1, NULL, 0, NULL);
|
|
if (status == -1)
|
|
err(1, "kevent");
|
|
buf = malloc(attr.mq_msgsize);
|
|
for (j = 0; j < LOOPS; ++j) {
|
|
for (i = 0; i < attr.mq_msgsize; ++i) {
|
|
buf[i] = i;
|
|
}
|
|
alarm(3);
|
|
status = kevent(kq, NULL, 0, &kev, 1, NULL);
|
|
if (status != 1)
|
|
err(1, "child: kevent 2");
|
|
status = mq_send(mq, buf, attr.mq_msgsize, PRIO);
|
|
if (status) {
|
|
err(2, "mq_send()");
|
|
}
|
|
}
|
|
free(buf);
|
|
alarm(3);
|
|
wait(&status);
|
|
alarm(0);
|
|
}
|
|
status = mq_close(mq);
|
|
if (status)
|
|
err(1, "mq_close");
|
|
mq_unlink(MQNAME);
|
|
return (0);
|
|
}
|