1/*- 2 * Copyright (c) 2011 James Gritton. 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 *
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54 55#define JF_START 0x0001 /* -c */ 56#define JF_SET 0x0002 /* -m */ 57#define JF_STOP 0x0004 /* -r */ 58#define JF_DEPEND 0x0008 /* Operation required by dependency */ 59#define JF_WILD 0x0010 /* Not specified on the command line */ 60#define JF_FAILED 0x0020 /* Operation failed */ 61#define JF_PARAMS 0x0040 /* Parameters checked and imported */ 62#define JF_RDTUN 0x0080 /* Create-only parameter check has been done */ 63#define JF_PERSIST 0x0100 /* Jail is temporarily persistent */ 64#define JF_TIMEOUT 0x0200 /* A command (or process kill) timed out */ 65#define JF_SLEEPQ 0x0400 /* Waiting on a command and/or timeout */ 66 67#define JF_OP_MASK (JF_START | JF_SET | JF_STOP) 68#define JF_RESTART (JF_START | JF_STOP) 69#define JF_START_SET (JF_START | JF_SET) 70#define JF_SET_RESTART (JF_SET | JF_STOP) 71#define JF_START_SET_RESTART (JF_START | JF_SET | JF_STOP) 72#define JF_DO_STOP(js) (((js) & (JF_SET | JF_STOP)) == JF_STOP) 73 74enum intparam { 75 IP__NULL = 0, /* Null command */ 76 IP_ALLOW_DYING, /* Allow making changes to a dying jail */ 77 IP_COMMAND, /* Command run inside jail at creation */ 78 IP_DEPEND, /* Jail starts after (stops before) another */ 79 IP_EXEC_CLEAN, /* Run commands in a clean environment */ 80 IP_EXEC_CONSOLELOG, /* Redirect optput for commands run in jail */ 81 IP_EXEC_FIB, /* Run jailed commands with this FIB */ 82 IP_EXEC_JAIL_USER, /* Run jailed commands as this user */ 83 IP_EXEC_POSTSTART, /* Commands run outside jail after creating */ 84 IP_EXEC_POSTSTOP, /* Commands run outside jail after removing */ 85 IP_EXEC_PRESTART, /* Commands run outside jail before creating */ 86 IP_EXEC_PRESTOP, /* Commands run outside jail before removing */ 87 IP_EXEC_START, /* Commands run inside jail on creation */ 88 IP_EXEC_STOP, /* Commands run inside jail on removal */ 89 IP_EXEC_SYSTEM_JAIL_USER,/* Get jail_user from system passwd file */ 90 IP_EXEC_SYSTEM_USER, /* Run non-jailed commands as this user */ 91 IP_EXEC_TIMEOUT, /* Time to wait for a command to complete */ 92#if defined(INET) || defined(INET6) 93 IP_INTERFACE, /* Add IP addresses to this interface */ 94 IP_IP_HOSTNAME, /* Get jail IP address(es) from hostname */ 95#endif 96 IP_MOUNT, /* Mount points in fstab(5) form */ 97 IP_MOUNT_DEVFS, /* Mount /dev under prison root */ 98 IP_MOUNT_FSTAB, /* A standard fstab(5) file */ 99 IP_STOP_TIMEOUT, /* Time to wait after sending SIGTERM */ 100 IP_VNET_INTERFACE, /* Assign interface(s) to vnet jail */ 101#ifdef INET 102 IP__IP4_IFADDR, /* Copy of ip4.addr with interface/netmask */ 103#endif 104#ifdef INET6 105 IP__IP6_IFADDR, /* Copy of ip6.addr with interface/prefixlen */ 106#endif 107 IP__MOUNT_FROM_FSTAB, /* Line from mount.fstab file */ 108 IP__OP, /* Placeholder for requested operation */ 109 KP_ALLOW_CHFLAGS, 110 KP_ALLOW_MOUNT, 111 KP_ALLOW_RAW_SOCKETS, 112 KP_ALLOW_SET_HOSTNAME, 113 KP_ALLOW_SOCKET_AF, 114 KP_ALLOW_SYSVIPC, 115 KP_DEVFS_RULESET, 116 KP_ENFORCE_STATFS, 117 KP_HOST_HOSTNAME, 118#ifdef INET 119 KP_IP4_ADDR, 120#endif 121#ifdef INET6 122 KP_IP6_ADDR, 123#endif 124 KP_JID, 125 KP_NAME, 126 KP_PATH, 127 KP_PERSIST, 128 KP_SECURELEVEL, 129 KP_VNET, 130 IP_NPARAM 131}; 132 133STAILQ_HEAD(cfvars, cfvar); 134 135struct cfvar { 136 STAILQ_ENTRY(cfvar) tq; 137 char *name; 138 size_t pos; 139}; 140 141TAILQ_HEAD(cfstrings, cfstring); 142 143struct cfstring { 144 TAILQ_ENTRY(cfstring) tq; 145 char *s; 146 size_t len; 147 struct cfvars vars; 148}; 149 150TAILQ_HEAD(cfparams, cfparam); 151 152struct cfparam { 153 TAILQ_ENTRY(cfparam) tq; 154 char *name; 155 struct cfstrings val; 156 unsigned flags; 157 int gen; 158}; 159 160TAILQ_HEAD(cfjails, cfjail); 161STAILQ_HEAD(cfdepends, cfdepend); 162 163struct cfjail { 164 TAILQ_ENTRY(cfjail) tq; 165 char *name; 166 char *comline; 167 struct cfparams params; 168 struct cfdepends dep[2]; 169 struct cfjails *queue; 170 struct cfparam *intparams[IP_NPARAM]; 171 struct cfstring *comstring; 172 struct jailparam *jp; 173 struct timespec timeout; 174 const enum intparam *comparam; 175 unsigned flags; 176 int jid; 177 int seq; 178 int pstatus; 179 int ndeps; 180 int njp; 181 int nprocs; 182}; 183 184struct cfdepend { 185 STAILQ_ENTRY(cfdepend) tq[2]; 186 struct cfjail *j[2]; 187 unsigned flags; 188}; 189 190extern void *emalloc(size_t); 191extern void *erealloc(void *, size_t); 192extern char *estrdup(const char *); 193extern int create_jail(struct cfjail *j); 194extern void failed(struct cfjail *j); 195extern void jail_note(const struct cfjail *j, const char *fmt, ...); 196extern void jail_warnx(const struct cfjail *j, const char *fmt, ...); 197 198extern int next_command(struct cfjail *j); 199extern int finish_command(struct cfjail *j); 200extern struct cfjail *next_proc(int nonblock); 201 202extern void load_config(void); 203extern struct cfjail *add_jail(void); 204extern void add_param(struct cfjail *j, const struct cfparam *p, 205 enum intparam ipnum, const char *value); 206extern int bool_param(const struct cfparam *p); 207extern int int_param(const struct cfparam *p, int *ip); 208extern const char *string_param(const struct cfparam *p); 209extern int check_intparams(struct cfjail *j); 210extern int import_params(struct cfjail *j); 211extern int equalopts(const char *opt1, const char *opt2); 212extern int wild_jail_name(const char *wname); 213extern int wild_jail_match(const char *jname, const char *wname); 214 215extern void dep_setup(int docf); 216extern int dep_check(struct cfjail *j); 217extern void dep_done(struct cfjail *j, unsigned flags); 218extern void dep_reset(struct cfjail *j); 219extern struct cfjail *next_jail(void); 220extern int start_state(const char *target, int docf, unsigned state, 221 int running); 222extern void requeue(struct cfjail *j, struct cfjails *queue); 223 224extern void yyerror(const char *); 225extern int yylex(void); 226 227extern struct cfjails cfjails; 228extern struct cfjails ready; 229extern struct cfjails depend; 230extern const char *cfname; 231extern int iflag; 232extern int note_remove; 233extern int paralimit; 234extern int verbose;
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