klibc/tests/vfork.c

/*
 * usr/klibc/tests/vfork.c
 *
 * vfork is messy on most architectures.  Do our best to test it out.
 */

#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>

int main(int argc, char *argv[])
{
	pid_t f, rv;
	int status;

	f = vfork();

	if (f == 0) {
		printf("Child (%d)...\n", (int)getpid());
		_exit(123);
	} else if (f > 0) {
		int err = 0;

		printf("Parent (child = %d)\n", (int)f);

		rv = waitpid(f, &status, 0);
		if (rv != f) {
			printf("waitpid returned %d, errno = %d\n",
			       (int)rv, errno);
			err++;
		}
		if (!WIFEXITED(status) || WEXITSTATUS(status) != 123) {
			printf("Child process existed with wrong status %d\n",
			       status);
			err++;
		}
		return err;
	} else {
		printf("vfork returned %d, errno = %d\n",
		       (int)f, errno);
		return 127;
	}
}
1	/*
2	* usr/klibc/tests/vfork.c
3	*
4	* vfork is messy on most architectures. Do our best to test it out.
5	*/
6
7	#include <errno.h>
8	#include <stdio.h>
9	#include <unistd.h>
10	#include <sys/types.h>
11	#include <sys/wait.h>
12
13	int main(int argc, char *argv[])
14	{
15	pid_t f, rv;
16	int status;
17
18	f = vfork();
19
20	if (f == 0) {
21	printf("Child (%d)...\n", (int)getpid());
22	_exit(123);
23	} else if (f > 0) {
24	int err = 0;
25
26	printf("Parent (child = %d)\n", (int)f);
27
28	rv = waitpid(f, &status, 0);
29	if (rv != f) {
30	printf("waitpid returned %d, errno = %d\n",
31	(int)rv, errno);
32	err++;
33	}
34	if (!WIFEXITED(status) \|\| WEXITSTATUS(status) != 123) {
35	printf("Child process existed with wrong status %d\n",
36	status);
37	err++;
38	}
39	return err;
40	} else {
41	printf("vfork returned %d, errno = %d\n",
42	(int)f, errno);
43	return 127;
44	}
45	}