jail.c revision 46432 
1/*
2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.ORG> wrote this file.  As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
8 *
9 * $Id$
10 *
11 */
12
13#include <stdio.h>
14#include <err.h>
15#include <sys/types.h>
16#include <sys/jail.h>
17#include <netinet/in.h>
18
19int
20main(int argc, char **argv)
21{
22	struct jail j;
23	int i;
24	struct in_addr in;
25
26	if (argc < 5)
27		errx(1, "Usage: %s path hostname ip command ...\n", argv[0]);
28	i = chdir(argv[1]);
29	if (i)
30		err(1, "chdir %s", argv[1]);
31	j.path = argv[1];
32	j.hostname = argv[2];
33	i = inet_aton(argv[3], &in);
34	if (!i)
35		errx(1, "Couldn't make sense if ip number\n");
36	j.ip_number = ntohl(in.s_addr);
37	i = jail(&j);
38	if (i)
39		err(1, "Imprisonment failed");
40	i = execv(argv[4], argv + 4);
41	if (i)
42		err(1, "execv(%s)", argv[4]);
43	exit (0);
44}
45