12671ee73SJamie Gritton /*- 24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 31de7b4b8SPedro F. Giffuni * 4d8352076SJamie Gritton * Copyright (c) 2011 James Gritton. 52671ee73SJamie Gritton * All rights reserved. 62671ee73SJamie Gritton * 72671ee73SJamie Gritton * Redistribution and use in source and binary forms, with or without 82671ee73SJamie Gritton * modification, are permitted provided that the following conditions 92671ee73SJamie Gritton * are met: 102671ee73SJamie Gritton * 1. Redistributions of source code must retain the above copyright 112671ee73SJamie Gritton * notice, this list of conditions and the following disclaimer. 122671ee73SJamie Gritton * 2. Redistributions in binary form must reproduce the above copyright 132671ee73SJamie Gritton * notice, this list of conditions and the following disclaimer in the 142671ee73SJamie Gritton * documentation and/or other materials provided with the distribution. 152671ee73SJamie Gritton * 162671ee73SJamie Gritton * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 172671ee73SJamie Gritton * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 182671ee73SJamie Gritton * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 192671ee73SJamie Gritton * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 202671ee73SJamie Gritton * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 212671ee73SJamie Gritton * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 222671ee73SJamie Gritton * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 232671ee73SJamie Gritton * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 242671ee73SJamie Gritton * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 252671ee73SJamie Gritton * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 262671ee73SJamie Gritton * SUCH DAMAGE. 272671ee73SJamie Gritton */ 282671ee73SJamie Gritton 292671ee73SJamie Gritton #include <sys/param.h> 302671ee73SJamie Gritton #include <sys/types.h> 312671ee73SJamie Gritton #include <sys/jail.h> 322671ee73SJamie Gritton #include <sys/queue.h> 332671ee73SJamie Gritton #include <sys/time.h> 342671ee73SJamie Gritton 352671ee73SJamie Gritton #include <jail.h> 36e82a6294SJamie Gritton #include <stdio.h> 372671ee73SJamie Gritton 382671ee73SJamie Gritton #define CONF_FILE "/etc/jail.conf" 392671ee73SJamie Gritton 402671ee73SJamie Gritton #define DEP_FROM 0 412671ee73SJamie Gritton #define DEP_TO 1 422671ee73SJamie Gritton 432671ee73SJamie Gritton #define DF_SEEN 0x01 /* Dependency has been followed */ 442671ee73SJamie Gritton #define DF_LIGHT 0x02 /* Implied dependency on jail existence only */ 45463a577bSEitan Adler #define DF_NOFAIL 0x04 /* Don't propagate failed jails */ 462671ee73SJamie Gritton 47e82a6294SJamie Gritton #define PF_VAR 0x0001 /* This is a variable, not a true parameter */ 48e82a6294SJamie Gritton #define PF_APPEND 0x0002 /* Append to existing parameter list */ 49e82a6294SJamie Gritton #define PF_BAD 0x0004 /* Unable to resolve parameter value */ 50e82a6294SJamie Gritton #define PF_INTERNAL 0x0008 /* Internal parameter, not passed to kernel */ 51e82a6294SJamie Gritton #define PF_BOOL 0x0010 /* Boolean parameter */ 52e82a6294SJamie Gritton #define PF_INT 0x0020 /* Integer parameter */ 53e82a6294SJamie Gritton #define PF_CONV 0x0040 /* Parameter duplicated in converted form */ 54e82a6294SJamie Gritton #define PF_REV 0x0080 /* Run commands in reverse order on stopping */ 55e82a6294SJamie Gritton #define PF_IMMUTABLE 0x0100 /* Immutable parameter */ 56e82a6294SJamie Gritton #define PF_NAMEVAL 0x0200 /* Parameter is in "name value" form */ 572671ee73SJamie Gritton 582671ee73SJamie Gritton #define JF_START 0x0001 /* -c */ 592671ee73SJamie Gritton #define JF_SET 0x0002 /* -m */ 602671ee73SJamie Gritton #define JF_STOP 0x0004 /* -r */ 612671ee73SJamie Gritton #define JF_DEPEND 0x0008 /* Operation required by dependency */ 622671ee73SJamie Gritton #define JF_WILD 0x0010 /* Not specified on the command line */ 632671ee73SJamie Gritton #define JF_FAILED 0x0020 /* Operation failed */ 64e3c69673SJamie Gritton #define JF_PARAMS 0x0040 /* Parameters checked and imported */ 65e3c69673SJamie Gritton #define JF_RDTUN 0x0080 /* Create-only parameter check has been done */ 663b40332cSJamie Gritton #define JF_PERSIST 0x0100 /* Jail is temporarily persistent */ 673b40332cSJamie Gritton #define JF_TIMEOUT 0x0200 /* A command (or process kill) timed out */ 683b40332cSJamie Gritton #define JF_SLEEPQ 0x0400 /* Waiting on a command and/or timeout */ 694c86c0faSJamie Gritton #define JF_FROM_RUNQ 0x0800 /* Has already been on the run queue */ 70d50685b3SJamie Gritton #define JF_CLEANUP 0x1000 /* -C Run post-removal commands */ 712671ee73SJamie Gritton 722671ee73SJamie Gritton #define JF_OP_MASK (JF_START | JF_SET | JF_STOP) 732671ee73SJamie Gritton #define JF_RESTART (JF_START | JF_STOP) 742671ee73SJamie Gritton #define JF_START_SET (JF_START | JF_SET) 752671ee73SJamie Gritton #define JF_SET_RESTART (JF_SET | JF_STOP) 762671ee73SJamie Gritton #define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP) 772671ee73SJamie Gritton #define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP) 782671ee73SJamie Gritton 792671ee73SJamie Gritton enum intparam { 806fcbac3cSJamie Gritton IP__NULL = 0, /* Null command */ 816fcbac3cSJamie Gritton IP_ALLOW_DYING, /* Allow making changes to a dying jail */ 822671ee73SJamie Gritton IP_COMMAND, /* Command run inside jail at creation */ 832671ee73SJamie Gritton IP_DEPEND, /* Jail starts after (stops before) another */ 842671ee73SJamie Gritton IP_EXEC_CLEAN, /* Run commands in a clean environment */ 852671ee73SJamie Gritton IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */ 862671ee73SJamie Gritton IP_EXEC_FIB, /* Run jailed commands with this FIB */ 872671ee73SJamie Gritton IP_EXEC_JAIL_USER, /* Run jailed commands as this user */ 882671ee73SJamie Gritton IP_EXEC_POSTSTART, /* Commands run outside jail after creating */ 892671ee73SJamie Gritton IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */ 9066005c45SRyan Moeller IP_EXEC_PREPARE, /* Commands run outside jail before addrs and mounting */ 912671ee73SJamie Gritton IP_EXEC_PRESTART, /* Commands run outside jail before creating */ 922671ee73SJamie Gritton IP_EXEC_PRESTOP, /* Commands run outside jail before removing */ 9366005c45SRyan Moeller IP_EXEC_RELEASE, /* Commands run outside jail after addrs and unmounted */ 94f6c0e63bSAlexander Leidinger IP_EXEC_CREATED, /* Commands run outside jail right after it was started */ 952671ee73SJamie Gritton IP_EXEC_START, /* Commands run inside jail on creation */ 962671ee73SJamie Gritton IP_EXEC_STOP, /* Commands run inside jail on removal */ 972671ee73SJamie Gritton IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */ 982671ee73SJamie Gritton IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */ 992671ee73SJamie Gritton IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */ 1005fb611c2SJamie Gritton #if defined(INET) || defined(INET6) 1012671ee73SJamie Gritton IP_INTERFACE, /* Add IP addresses to this interface */ 1022671ee73SJamie Gritton IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */ 1035fb611c2SJamie Gritton #endif 1042671ee73SJamie Gritton IP_MOUNT, /* Mount points in fstab(5) form */ 1052671ee73SJamie Gritton IP_MOUNT_DEVFS, /* Mount /dev under prison root */ 106fbd868c9SHiroki Sato IP_MOUNT_FDESCFS, /* Mount /dev/fd under prison root */ 10707a7869fSJamie Gritton IP_MOUNT_PROCFS, /* Mount /proc under prison root */ 10855530438SJamie Gritton IP_MOUNT_FSTAB, /* A standard fstab(5) file */ 1092671ee73SJamie Gritton IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */ 11055530438SJamie Gritton IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */ 111e0dfe185SAlexander Leidinger IP_ZFS_DATASET, /* Jail ZFS datasets */ 1125fb611c2SJamie Gritton #ifdef INET 1132671ee73SJamie Gritton IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */ 1145fb611c2SJamie Gritton #endif 1152671ee73SJamie Gritton #ifdef INET6 1162671ee73SJamie Gritton IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */ 1172671ee73SJamie Gritton #endif 11852a49622SJamie Gritton IP__MOUNT_FROM_FSTAB, /* Line from mount.fstab file */ 1193b40332cSJamie Gritton IP__OP, /* Placeholder for requested operation */ 12055530438SJamie Gritton KP_ALLOW_CHFLAGS, 12155530438SJamie Gritton KP_ALLOW_MOUNT, 12255530438SJamie Gritton KP_ALLOW_RAW_SOCKETS, 12355530438SJamie Gritton KP_ALLOW_SET_HOSTNAME, 12455530438SJamie Gritton KP_ALLOW_SOCKET_AF, 12555530438SJamie Gritton KP_ALLOW_SYSVIPC, 1260c4d49e9SJamie Gritton KP_DEVFS_RULESET, 12755530438SJamie Gritton KP_HOST_HOSTNAME, 1285fb611c2SJamie Gritton #ifdef INET 1292671ee73SJamie Gritton KP_IP4_ADDR, 1305fb611c2SJamie Gritton #endif 1312671ee73SJamie Gritton #ifdef INET6 1322671ee73SJamie Gritton KP_IP6_ADDR, 1332671ee73SJamie Gritton #endif 1342671ee73SJamie Gritton KP_JID, 1352671ee73SJamie Gritton KP_NAME, 1362671ee73SJamie Gritton KP_PATH, 1372671ee73SJamie Gritton KP_PERSIST, 13855530438SJamie Gritton KP_SECURELEVEL, 1392671ee73SJamie Gritton KP_VNET, 1402671ee73SJamie Gritton IP_NPARAM 1412671ee73SJamie Gritton }; 1422671ee73SJamie Gritton 1432671ee73SJamie Gritton STAILQ_HEAD(cfvars, cfvar); 1442671ee73SJamie Gritton 1452671ee73SJamie Gritton struct cfvar { 1462671ee73SJamie Gritton STAILQ_ENTRY(cfvar) tq; 1472671ee73SJamie Gritton char *name; 1482671ee73SJamie Gritton size_t pos; 1492671ee73SJamie Gritton }; 1502671ee73SJamie Gritton 1512a194551SJamie Gritton TAILQ_HEAD(cfstrings, cfstring); 1522671ee73SJamie Gritton 1532671ee73SJamie Gritton struct cfstring { 1542a194551SJamie Gritton TAILQ_ENTRY(cfstring) tq; 1552671ee73SJamie Gritton char *s; 1562671ee73SJamie Gritton size_t len; 1572671ee73SJamie Gritton struct cfvars vars; 1582671ee73SJamie Gritton }; 1592671ee73SJamie Gritton 1602671ee73SJamie Gritton TAILQ_HEAD(cfparams, cfparam); 1612671ee73SJamie Gritton 1622671ee73SJamie Gritton struct cfparam { 1632671ee73SJamie Gritton TAILQ_ENTRY(cfparam) tq; 1642671ee73SJamie Gritton char *name; 1652671ee73SJamie Gritton struct cfstrings val; 1662671ee73SJamie Gritton unsigned flags; 1672671ee73SJamie Gritton int gen; 1682671ee73SJamie Gritton }; 1692671ee73SJamie Gritton 1702671ee73SJamie Gritton TAILQ_HEAD(cfjails, cfjail); 1712671ee73SJamie Gritton STAILQ_HEAD(cfdepends, cfdepend); 1722671ee73SJamie Gritton 1732671ee73SJamie Gritton struct cfjail { 1742671ee73SJamie Gritton TAILQ_ENTRY(cfjail) tq; 1752671ee73SJamie Gritton char *name; 1762671ee73SJamie Gritton char *comline; 1772671ee73SJamie Gritton struct cfparams params; 1782671ee73SJamie Gritton struct cfdepends dep[2]; 1792671ee73SJamie Gritton struct cfjails *queue; 180097db30aSJamie Gritton struct cfjail *cfparent; 1812671ee73SJamie Gritton struct cfparam *intparams[IP_NPARAM]; 1822671ee73SJamie Gritton struct cfstring *comstring; 1832671ee73SJamie Gritton struct jailparam *jp; 1842671ee73SJamie Gritton struct timespec timeout; 1853b40332cSJamie Gritton const enum intparam *comparam; 1862671ee73SJamie Gritton unsigned flags; 1872671ee73SJamie Gritton int jid; 1882671ee73SJamie Gritton int seq; 1892671ee73SJamie Gritton int pstatus; 1902671ee73SJamie Gritton int ndeps; 1912671ee73SJamie Gritton int njp; 1922671ee73SJamie Gritton int nprocs; 1932671ee73SJamie Gritton }; 1942671ee73SJamie Gritton 1952671ee73SJamie Gritton struct cfdepend { 1962671ee73SJamie Gritton STAILQ_ENTRY(cfdepend) tq[2]; 1972671ee73SJamie Gritton struct cfjail *j[2]; 1982671ee73SJamie Gritton unsigned flags; 1992671ee73SJamie Gritton }; 2002671ee73SJamie Gritton 201086e0149SJamie Gritton struct cflex { 202086e0149SJamie Gritton const char *cfname; 203086e0149SJamie Gritton int error; 204086e0149SJamie Gritton }; 205086e0149SJamie Gritton 2062671ee73SJamie Gritton extern void *emalloc(size_t); 2072671ee73SJamie Gritton extern void *erealloc(void *, size_t); 2082671ee73SJamie Gritton extern char *estrdup(const char *); 2092b00f7baSJamie Gritton extern int create_jail(struct cfjail *j); 2102671ee73SJamie Gritton extern void failed(struct cfjail *j); 2112671ee73SJamie Gritton extern void jail_note(const struct cfjail *j, const char *fmt, ...); 2122671ee73SJamie Gritton extern void jail_warnx(const struct cfjail *j, const char *fmt, ...); 2132671ee73SJamie Gritton 2143b40332cSJamie Gritton extern int next_command(struct cfjail *j); 215aa02af54SJamie Gritton extern int finish_command(struct cfjail *j); 2162671ee73SJamie Gritton extern struct cfjail *next_proc(int nonblock); 2172671ee73SJamie Gritton 218086e0149SJamie Gritton extern void load_config(const char *cfname); 219e82a6294SJamie Gritton extern void include_config(void *scanner, const char *cfname); 2202671ee73SJamie Gritton extern struct cfjail *add_jail(void); 2212671ee73SJamie Gritton extern void add_param(struct cfjail *j, const struct cfparam *p, 22255530438SJamie Gritton enum intparam ipnum, const char *value); 2232671ee73SJamie Gritton extern int bool_param(const struct cfparam *p); 2242671ee73SJamie Gritton extern int int_param(const struct cfparam *p, int *ip); 2252671ee73SJamie Gritton extern const char *string_param(const struct cfparam *p); 226e3c69673SJamie Gritton extern int check_intparams(struct cfjail *j); 2272671ee73SJamie Gritton extern int import_params(struct cfjail *j); 2282671ee73SJamie Gritton extern int equalopts(const char *opt1, const char *opt2); 2292671ee73SJamie Gritton extern int wild_jail_name(const char *wname); 2302671ee73SJamie Gritton extern int wild_jail_match(const char *jname, const char *wname); 231e82a6294SJamie Gritton extern void free_param_strings(struct cfparam *p); 2322671ee73SJamie Gritton 2332671ee73SJamie Gritton extern void dep_setup(int docf); 2342671ee73SJamie Gritton extern int dep_check(struct cfjail *j); 2352671ee73SJamie Gritton extern void dep_done(struct cfjail *j, unsigned flags); 2362671ee73SJamie Gritton extern void dep_reset(struct cfjail *j); 2372671ee73SJamie Gritton extern struct cfjail *next_jail(void); 2381ca35de4SJamie Gritton extern int start_state(const char *target, int docf, unsigned state, 2391ca35de4SJamie Gritton int running); 2402671ee73SJamie Gritton extern void requeue(struct cfjail *j, struct cfjails *queue); 2414c86c0faSJamie Gritton extern void requeue_head(struct cfjail *j, struct cfjails *queue); 2422671ee73SJamie Gritton 243e82a6294SJamie Gritton extern struct cflex *yyget_extra(void *scanner); 244e82a6294SJamie Gritton extern FILE *yyget_in(void *scanner); 245e82a6294SJamie Gritton extern int yyget_lineno(void *scanner); 246e82a6294SJamie Gritton extern char *yyget_text(void *scanner); 247e82a6294SJamie Gritton 2482671ee73SJamie Gritton extern struct cfjails cfjails; 2492671ee73SJamie Gritton extern struct cfjails ready; 250aa02af54SJamie Gritton extern struct cfjails depend; 251a6486f60SJamie Gritton extern int iflag; 2522b00f7baSJamie Gritton extern int note_remove; 253aa02af54SJamie Gritton extern int paralimit; 2542671ee73SJamie Gritton extern int verbose; 255