1194869Sjamie/*- 2194869Sjamie * Copyright (c) 2009 James Gritton. 3194869Sjamie * All rights reserved. 4194869Sjamie * 5194869Sjamie * Redistribution and use in source and binary forms, with or without 6194869Sjamie * modification, are permitted provided that the following conditions 7194869Sjamie * are met: 8194869Sjamie * 1. Redistributions of source code must retain the above copyright 9194869Sjamie * notice, this list of conditions and the following disclaimer. 10194869Sjamie * 2. Redistributions in binary form must reproduce the above copyright 11194869Sjamie * notice, this list of conditions and the following disclaimer in the 12194869Sjamie * documentation and/or other materials provided with the distribution. 13194869Sjamie * 14194869Sjamie * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15194869Sjamie * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16194869Sjamie * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17194869Sjamie * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18194869Sjamie * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19194869Sjamie * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20194869Sjamie * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21194869Sjamie * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22194869Sjamie * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23194869Sjamie * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24194869Sjamie * SUCH DAMAGE. 25194869Sjamie */ 26194869Sjamie 27194869Sjamie#include <sys/cdefs.h> 28194869Sjamie__FBSDID("$FreeBSD$"); 29194869Sjamie 30194869Sjamie#include <sys/param.h> 31194869Sjamie#include <sys/types.h> 32194869Sjamie#include <sys/jail.h> 33194869Sjamie#include <sys/uio.h> 34194869Sjamie 35194869Sjamie#include <errno.h> 36194869Sjamie#include <stdio.h> 37194869Sjamie#include <stdlib.h> 38194869Sjamie#include <string.h> 39194869Sjamie 40194869Sjamie#include "jail.h" 41194869Sjamie 42194869Sjamie 43194869Sjamie/* 44194869Sjamie * Return the JID corresponding to a jail name. 45194869Sjamie */ 46194869Sjamieint 47194869Sjamiejail_getid(const char *name) 48194869Sjamie{ 49194869Sjamie char *ep; 50194869Sjamie int jid; 51194869Sjamie struct iovec jiov[4]; 52194869Sjamie 53194869Sjamie jid = strtoul(name, &ep, 10); 54194869Sjamie if (*name && !*ep) 55194869Sjamie return jid; 56194869Sjamie *(const void **)&jiov[0].iov_base = "name"; 57194869Sjamie jiov[0].iov_len = sizeof("name"); 58194869Sjamie jiov[1].iov_len = strlen(name) + 1; 59194869Sjamie jiov[1].iov_base = alloca(jiov[1].iov_len); 60194869Sjamie strcpy(jiov[1].iov_base, name); 61194869Sjamie *(const void **)&jiov[2].iov_base = "errmsg"; 62194869Sjamie jiov[2].iov_len = sizeof("errmsg"); 63194869Sjamie jiov[3].iov_base = jail_errmsg; 64194869Sjamie jiov[3].iov_len = JAIL_ERRMSGLEN; 65194869Sjamie jail_errmsg[0] = 0; 66194869Sjamie jid = jail_get(jiov, 4, 0); 67194869Sjamie if (jid < 0 && !jail_errmsg[0]) 68194869Sjamie snprintf(jail_errmsg, JAIL_ERRMSGLEN, "jail_get: %s", 69194869Sjamie strerror(errno)); 70194869Sjamie return jid; 71194869Sjamie} 72194869Sjamie 73194869Sjamie/* 74194869Sjamie * Return the name corresponding to a JID. 75194869Sjamie */ 76194869Sjamiechar * 77194869Sjamiejail_getname(int jid) 78194869Sjamie{ 79194869Sjamie struct iovec jiov[6]; 80194869Sjamie char *name; 81194869Sjamie char namebuf[MAXHOSTNAMELEN]; 82194869Sjamie 83194869Sjamie *(const void **)&jiov[0].iov_base = "jid"; 84194869Sjamie jiov[0].iov_len = sizeof("jid"); 85194869Sjamie jiov[1].iov_base = &jid; 86194869Sjamie jiov[1].iov_len = sizeof(jid); 87194869Sjamie *(const void **)&jiov[2].iov_base = "name"; 88194869Sjamie jiov[2].iov_len = sizeof("name"); 89194869Sjamie jiov[3].iov_base = namebuf; 90194869Sjamie jiov[3].iov_len = sizeof(namebuf); 91194869Sjamie *(const void **)&jiov[4].iov_base = "errmsg"; 92194869Sjamie jiov[4].iov_len = sizeof("errmsg"); 93194869Sjamie jiov[5].iov_base = jail_errmsg; 94194869Sjamie jiov[5].iov_len = JAIL_ERRMSGLEN; 95194869Sjamie jail_errmsg[0] = 0; 96194869Sjamie jid = jail_get(jiov, 6, 0); 97210134Sjamie if (jid < 0) { 98210134Sjamie if (!jail_errmsg[0]) 99210134Sjamie snprintf(jail_errmsg, JAIL_ERRMSGLEN, "jail_get: %s", 100210134Sjamie strerror(errno)); 101210134Sjamie return NULL; 102210134Sjamie } else { 103210134Sjamie name = strdup(namebuf); 104210134Sjamie if (name == NULL) 105210134Sjamie strerror_r(errno, jail_errmsg, JAIL_ERRMSGLEN); 106210134Sjamie } 107194869Sjamie return name; 108194869Sjamie} 109