1214117Sjamie/*- 2330449Seadler * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3330449Seadler * 4223190Sjamie * Copyright (c) 2011 James Gritton. 5214117Sjamie * All rights reserved. 6214117Sjamie * 7214117Sjamie * Redistribution and use in source and binary forms, with or without 8214117Sjamie * modification, are permitted provided that the following conditions 9214117Sjamie * are met: 10214117Sjamie * 1. Redistributions of source code must retain the above copyright 11214117Sjamie * notice, this list of conditions and the following disclaimer. 12214117Sjamie * 2. Redistributions in binary form must reproduce the above copyright 13214117Sjamie * notice, this list of conditions and the following disclaimer in the 14214117Sjamie * documentation and/or other materials provided with the distribution. 15214117Sjamie * 16214117Sjamie * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17214117Sjamie * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18214117Sjamie * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19214117Sjamie * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20214117Sjamie * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21214117Sjamie * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22214117Sjamie * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23214117Sjamie * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24214117Sjamie * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25214117Sjamie * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26214117Sjamie * SUCH DAMAGE. 27214117Sjamie * 28214117Sjamie * $FreeBSD: stable/11/usr.sbin/jail/jailp.h 341790 2018-12-10 13:47:05Z eugen $ 29214117Sjamie */ 30214117Sjamie 31214117Sjamie#include <sys/param.h> 32214117Sjamie#include <sys/types.h> 33214117Sjamie#include <sys/jail.h> 34214117Sjamie#include <sys/queue.h> 35214117Sjamie#include <sys/time.h> 36214117Sjamie 37214117Sjamie#include <jail.h> 38214117Sjamie 39214117Sjamie#define CONF_FILE "/etc/jail.conf" 40214117Sjamie 41214117Sjamie#define DEP_FROM 0 42214117Sjamie#define DEP_TO 1 43214117Sjamie 44214117Sjamie#define DF_SEEN 0x01 /* Dependency has been followed */ 45214117Sjamie#define DF_LIGHT 0x02 /* Implied dependency on jail existence only */ 46289677Seadler#define DF_NOFAIL 0x04 /* Don't propagate failed jails */ 47214117Sjamie 48214117Sjamie#define PF_VAR 0x01 /* This is a variable, not a true parameter */ 49214117Sjamie#define PF_APPEND 0x02 /* Append to existing parameter list */ 50214117Sjamie#define PF_BAD 0x04 /* Unable to resolve parameter value */ 51214117Sjamie#define PF_INTERNAL 0x08 /* Internal parameter, not passed to kernel */ 52214117Sjamie#define PF_BOOL 0x10 /* Boolean parameter */ 53214117Sjamie#define PF_INT 0x20 /* Integer parameter */ 54214423Sjamie#define PF_CONV 0x40 /* Parameter duplicated in converted form */ 55248854Sjamie#define PF_REV 0x80 /* Run commands in reverse order on stopping */ 56285279Shrs#define PF_IMMUTABLE 0x100 /* Immutable parameter */ 57214117Sjamie 58214117Sjamie#define JF_START 0x0001 /* -c */ 59214117Sjamie#define JF_SET 0x0002 /* -m */ 60214117Sjamie#define JF_STOP 0x0004 /* -r */ 61214117Sjamie#define JF_DEPEND 0x0008 /* Operation required by dependency */ 62214117Sjamie#define JF_WILD 0x0010 /* Not specified on the command line */ 63214117Sjamie#define JF_FAILED 0x0020 /* Operation failed */ 64214649Sjamie#define JF_PARAMS 0x0040 /* Parameters checked and imported */ 65214649Sjamie#define JF_RDTUN 0x0080 /* Create-only parameter check has been done */ 66223189Sjamie#define JF_PERSIST 0x0100 /* Jail is temporarily persistent */ 67223189Sjamie#define JF_TIMEOUT 0x0200 /* A command (or process kill) timed out */ 68223189Sjamie#define JF_SLEEPQ 0x0400 /* Waiting on a command and/or timeout */ 69302954Sjamie#define JF_FROM_RUNQ 0x0800 /* Has already been on the run queue */ 70341790Seugen#define JF_SHOW 0x1000 /* -e Exhibit list of configured jails */ 71214117Sjamie 72214117Sjamie#define JF_OP_MASK (JF_START | JF_SET | JF_STOP) 73214117Sjamie#define JF_RESTART (JF_START | JF_STOP) 74214117Sjamie#define JF_START_SET (JF_START | JF_SET) 75214117Sjamie#define JF_SET_RESTART (JF_SET | JF_STOP) 76214117Sjamie#define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP) 77214117Sjamie#define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP) 78214117Sjamie 79214117Sjamieenum intparam { 80234988Sjamie IP__NULL = 0, /* Null command */ 81234988Sjamie IP_ALLOW_DYING, /* Allow making changes to a dying jail */ 82214117Sjamie IP_COMMAND, /* Command run inside jail at creation */ 83214117Sjamie IP_DEPEND, /* Jail starts after (stops before) another */ 84214117Sjamie IP_EXEC_CLEAN, /* Run commands in a clean environment */ 85214117Sjamie IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */ 86214117Sjamie IP_EXEC_FIB, /* Run jailed commands with this FIB */ 87214117Sjamie IP_EXEC_JAIL_USER, /* Run jailed commands as this user */ 88214117Sjamie IP_EXEC_POSTSTART, /* Commands run outside jail after creating */ 89214117Sjamie IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */ 90214117Sjamie IP_EXEC_PRESTART, /* Commands run outside jail before creating */ 91214117Sjamie IP_EXEC_PRESTOP, /* Commands run outside jail before removing */ 92214117Sjamie IP_EXEC_START, /* Commands run inside jail on creation */ 93214117Sjamie IP_EXEC_STOP, /* Commands run inside jail on removal */ 94214117Sjamie IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */ 95214117Sjamie IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */ 96214117Sjamie IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */ 97223351Sjamie#if defined(INET) || defined(INET6) 98214117Sjamie IP_INTERFACE, /* Add IP addresses to this interface */ 99214117Sjamie IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */ 100223351Sjamie#endif 101214117Sjamie IP_MOUNT, /* Mount points in fstab(5) form */ 102214117Sjamie IP_MOUNT_DEVFS, /* Mount /dev under prison root */ 103256385Shrs IP_MOUNT_FDESCFS, /* Mount /dev/fd under prison root */ 104278323Sjamie IP_MOUNT_PROCFS, /* Mount /proc under prison root */ 105214423Sjamie IP_MOUNT_FSTAB, /* A standard fstab(5) file */ 106214117Sjamie IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */ 107214423Sjamie IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */ 108223351Sjamie#ifdef INET 109214117Sjamie IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */ 110223351Sjamie#endif 111214117Sjamie#ifdef INET6 112214117Sjamie IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */ 113214117Sjamie#endif 114214783Sjamie IP__MOUNT_FROM_FSTAB, /* Line from mount.fstab file */ 115223189Sjamie IP__OP, /* Placeholder for requested operation */ 116214423Sjamie KP_ALLOW_CHFLAGS, 117214423Sjamie KP_ALLOW_MOUNT, 118214423Sjamie KP_ALLOW_RAW_SOCKETS, 119214423Sjamie KP_ALLOW_SET_HOSTNAME, 120214423Sjamie KP_ALLOW_SOCKET_AF, 121214423Sjamie KP_ALLOW_SYSVIPC, 122232242Sjamie KP_DEVFS_RULESET, 123214423Sjamie KP_ENFORCE_STATFS, 124214423Sjamie KP_HOST_HOSTNAME, 125223351Sjamie#ifdef INET 126214117Sjamie KP_IP4_ADDR, 127223351Sjamie#endif 128214117Sjamie#ifdef INET6 129214117Sjamie KP_IP6_ADDR, 130214117Sjamie#endif 131214117Sjamie KP_JID, 132214117Sjamie KP_NAME, 133214117Sjamie KP_PATH, 134214117Sjamie KP_PERSIST, 135214423Sjamie KP_SECURELEVEL, 136214117Sjamie KP_VNET, 137214117Sjamie IP_NPARAM 138214117Sjamie}; 139214117Sjamie 140214117SjamieSTAILQ_HEAD(cfvars, cfvar); 141214117Sjamie 142214117Sjamiestruct cfvar { 143214117Sjamie STAILQ_ENTRY(cfvar) tq; 144214117Sjamie char *name; 145214117Sjamie size_t pos; 146214117Sjamie}; 147214117Sjamie 148223188SjamieTAILQ_HEAD(cfstrings, cfstring); 149214117Sjamie 150214117Sjamiestruct cfstring { 151223188Sjamie TAILQ_ENTRY(cfstring) tq; 152214117Sjamie char *s; 153214117Sjamie size_t len; 154214117Sjamie struct cfvars vars; 155214117Sjamie}; 156214117Sjamie 157214117SjamieTAILQ_HEAD(cfparams, cfparam); 158214117Sjamie 159214117Sjamiestruct cfparam { 160214117Sjamie TAILQ_ENTRY(cfparam) tq; 161214117Sjamie char *name; 162214117Sjamie struct cfstrings val; 163214117Sjamie unsigned flags; 164214117Sjamie int gen; 165214117Sjamie}; 166214117Sjamie 167214117SjamieTAILQ_HEAD(cfjails, cfjail); 168214117SjamieSTAILQ_HEAD(cfdepends, cfdepend); 169214117Sjamie 170214117Sjamiestruct cfjail { 171214117Sjamie TAILQ_ENTRY(cfjail) tq; 172214117Sjamie char *name; 173214117Sjamie char *comline; 174214117Sjamie struct cfparams params; 175214117Sjamie struct cfdepends dep[2]; 176214117Sjamie struct cfjails *queue; 177214117Sjamie struct cfparam *intparams[IP_NPARAM]; 178214117Sjamie struct cfstring *comstring; 179214117Sjamie struct jailparam *jp; 180214117Sjamie struct timespec timeout; 181223189Sjamie const enum intparam *comparam; 182214117Sjamie unsigned flags; 183214117Sjamie int jid; 184214117Sjamie int seq; 185214117Sjamie int pstatus; 186214117Sjamie int ndeps; 187214117Sjamie int njp; 188214117Sjamie int nprocs; 189214117Sjamie}; 190214117Sjamie 191214117Sjamiestruct cfdepend { 192214117Sjamie STAILQ_ENTRY(cfdepend) tq[2]; 193214117Sjamie struct cfjail *j[2]; 194214117Sjamie unsigned flags; 195214117Sjamie}; 196214117Sjamie 197214117Sjamieextern void *emalloc(size_t); 198214117Sjamieextern void *erealloc(void *, size_t); 199214117Sjamieextern char *estrdup(const char *); 200223263Sjamieextern int create_jail(struct cfjail *j); 201214117Sjamieextern void failed(struct cfjail *j); 202214117Sjamieextern void jail_note(const struct cfjail *j, const char *fmt, ...); 203214117Sjamieextern void jail_warnx(const struct cfjail *j, const char *fmt, ...); 204214117Sjamie 205223189Sjamieextern int next_command(struct cfjail *j); 206216367Sjamieextern int finish_command(struct cfjail *j); 207214117Sjamieextern struct cfjail *next_proc(int nonblock); 208214117Sjamie 209214117Sjamieextern void load_config(void); 210214117Sjamieextern struct cfjail *add_jail(void); 211214117Sjamieextern void add_param(struct cfjail *j, const struct cfparam *p, 212214423Sjamie enum intparam ipnum, const char *value); 213214117Sjamieextern int bool_param(const struct cfparam *p); 214214117Sjamieextern int int_param(const struct cfparam *p, int *ip); 215214117Sjamieextern const char *string_param(const struct cfparam *p); 216214649Sjamieextern int check_intparams(struct cfjail *j); 217214117Sjamieextern int import_params(struct cfjail *j); 218214117Sjamieextern int equalopts(const char *opt1, const char *opt2); 219214117Sjamieextern int wild_jail_name(const char *wname); 220214117Sjamieextern int wild_jail_match(const char *jname, const char *wname); 221214117Sjamie 222214117Sjamieextern void dep_setup(int docf); 223214117Sjamieextern int dep_check(struct cfjail *j); 224214117Sjamieextern void dep_done(struct cfjail *j, unsigned flags); 225214117Sjamieextern void dep_reset(struct cfjail *j); 226214117Sjamieextern struct cfjail *next_jail(void); 227231238Sjamieextern int start_state(const char *target, int docf, unsigned state, 228231238Sjamie int running); 229214117Sjamieextern void requeue(struct cfjail *j, struct cfjails *queue); 230302954Sjamieextern void requeue_head(struct cfjail *j, struct cfjails *queue); 231214117Sjamie 232214117Sjamieextern void yyerror(const char *); 233214117Sjamieextern int yylex(void); 234214117Sjamie 235214117Sjamieextern struct cfjails cfjails; 236214117Sjamieextern struct cfjails ready; 237216367Sjamieextern struct cfjails depend; 238214117Sjamieextern const char *cfname; 239236198Sjamieextern int iflag; 240223263Sjamieextern int note_remove; 241216367Sjamieextern int paralimit; 242214117Sjamieextern int verbose; 243