/*
// AUTHOR
// N. Nielsen
// James Quick <jq@quick.com>
//
// LICENSE
// This software is in the public domain.
//
// The software is provided "as is", without warranty of any kind,
// express or implied, including but not limited to the warranties
// of merchantability, fitness for a particular purpose, and
// noninfringement. In no event shall the author(s) be liable for any
// claim, damages, or other liability, whether in an action of
// contract, tort, or otherwise, arising from, out of, or in connection
// with the software or the use or other dealings in the software.
//
// SUPPORT
// Send bug reports to: <nielsen@memberwebs.com>
//
// CHANGES
// 1.1
//		Initial implementation
//
// injail
// A utility function to determine if a process is running in a
// FreeBSD jail.
//
// This code was contributed by James E. Quick mailto:jq@quick.com
// The code may be freely re-used under the terms of the BSD copyright,
// as long as this comment remains intact.
*/

#include <stdio.h>

int injail();

/* main for injail
 * return 0 if in a jail
 * return 1 if not in jail
 * return 2 if error prevented determining status
 * jq 05/28/2002
 */
main(int argc, char *argv[])
{
	int jailed = injail();

	if(jailed == -1)
		errx(2, "Could not determine jailed status.\n");

	return jailed ? 0 : 1;
}