1 /*- 2 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/usr.sbin/jls/jls.c,v 1.3 2003/04/22 13:24:56 mike Exp $ 27 * $DragonFly: src/usr.sbin/jls/jls.c,v 1.2 2006/12/29 18:02:57 victor Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/sysctl.h> 32 33 #include <err.h> 34 #include <errno.h> 35 #include <limits.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 40 #include <netinet/in.h> 41 #include <arpa/inet.h> 42 43 int 44 main(void) 45 { 46 size_t len, i; 47 char *jls; /* Jail list */ 48 char *curpos; 49 50 if (sysctlbyname("jail.list", NULL, &len, NULL, 0) == -1) 51 err(1, "sysctlbyname(): jail.list"); 52 retry: 53 if (len == 0) 54 exit(0); 55 56 jls = malloc(len); 57 if (jls == NULL) 58 err(1, "malloc failed"); 59 60 if (sysctlbyname("jail.list", jls, &len, NULL, 0) == -1) { 61 if (errno == ENOMEM) { 62 free(jls); 63 goto retry; 64 } 65 err(1, "sysctlbyname(): jail.list"); 66 } 67 printf("JID\tHostname\tPath\tIPs\n"); 68 curpos = jls; 69 do { 70 for (i = 0; i < 3; i++) { 71 curpos = strchr(curpos, ' '); 72 *curpos = '\t'; 73 } 74 } while ( (curpos = strchr(curpos, '\n')) != NULL); 75 printf("%s\n", jls); 76 free(jls); 77 exit(0); 78 } 79