/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1999 Poul-Henning Kamp. * Copyright (c) 2009-2012 James Gritton * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "jailp.h" #define JP_RDTUN(jp) (((jp)->jp_ctltype & CTLFLAG_RDTUN) == CTLFLAG_RDTUN) struct permspec { const char *name; enum intparam ipnum; int rev; }; int iflag; int note_remove; int verbose; const char *separator = "\t"; static void clear_persist(struct cfjail *j); static int update_jail(struct cfjail *j); static int rdtun_params(struct cfjail *j, int dofail); static void running_jid(struct cfjail *j); static void jail_quoted_warnx(const struct cfjail *j, const char *name_msg, const char *noname_msg); static int jailparam_set_note(const struct cfjail *j, struct jailparam *jp, unsigned njp, int flags); static void print_jail(FILE *fp, struct cfjail *j, int oldcl, int running); static void print_param(FILE *fp, const struct cfparam *p, int sep, int doname); static void show_jails(void); static void quoted_print(FILE *fp, char *str); static void usage(void) __dead2; static struct permspec perm_sysctl[] = { { "security.jail.set_hostname_allowed", KP_ALLOW_SET_HOSTNAME, 0 }, { "security.jail.sysvipc_allowed", KP_ALLOW_SYSVIPC, 0 }, { "security.jail.allow_raw_sockets", KP_ALLOW_RAW_SOCKETS, 0 }, { "security.jail.chflags_allowed", KP_ALLOW_CHFLAGS, 0 }, { "security.jail.mount_allowed", KP_ALLOW_MOUNT, 0 }, { "security.jail.socket_unixiproute_only", KP_ALLOW_SOCKET_AF, 1 }, }; static const enum intparam startcommands[] = { IP__NULL, IP_EXEC_PREPARE, #ifdef INET IP__IP4_IFADDR, #endif #ifdef INET6 IP__IP6_IFADDR, #endif IP_MOUNT, IP__MOUNT_FROM_FSTAB, IP_MOUNT_DEVFS, IP_MOUNT_FDESCFS, IP_MOUNT_PROCFS, IP_EXEC_PRESTART, IP__OP, IP_EXEC_CREATED, IP_ZFS_DATASET, IP_VNET_INTERFACE, IP_EXEC_START, IP_COMMAND, IP_EXEC_POSTSTART, IP__NULL }; static const enum intparam stopcommands[] = { IP__NULL, IP_EXEC_PRESTOP, IP_EXEC_STOP, IP_STOP_TIMEOUT, IP__OP, IP_EXEC_POSTSTOP, IP_MOUNT_PROCFS, IP_MOUNT_FDESCFS, IP_MOUNT_DEVFS, IP__MOUNT_FROM_FSTAB, IP_MOUNT, #ifdef INET6 IP__IP6_IFADDR, #endif #ifdef INET IP__IP4_IFADDR, #endif IP_EXEC_RELEASE, IP__NULL }; int main(int argc, char **argv) { struct stat st; FILE *jfp; struct cfjail *j; char *JidFile; const char *cfname; size_t sysvallen; unsigned op, pi; int ch, docf, dying_warned, error, i, oldcl, sysval; int dflag, eflag, Rflag; #if defined(INET) || defined(INET6) char *cs, *ncs; #endif #if defined(INET) && defined(INET6) struct in6_addr addr6; #endif op = 0; dflag = eflag = Rflag = 0; docf = 1; cfname = CONF_FILE; JidFile = NULL; while ((ch = getopt(argc, argv, "cde:f:hiJ:lmn:p:qrRs:u:U:v")) != -1) { switch (ch) { case 'c': op |= JF_START; break; case 'd': dflag = 1; break; case 'e': eflag = 1; separator = optarg; break; case 'f': cfname = optarg; break; case 'h': #if defined(INET) || defined(INET6) add_param(NULL, NULL, IP_IP_HOSTNAME, NULL); #endif docf = 0; break; case 'i': iflag = 1; verbose = -1; break; case 'J': JidFile = optarg; break; case 'l': add_param(NULL, NULL, IP_EXEC_CLEAN, NULL); docf = 0; break; case 'm': op |= JF_SET; break; case 'n': add_param(NULL, NULL, KP_NAME, optarg); docf = 0; break; case 'p': paralimit = strtol(optarg, NULL, 10); if (paralimit == 0) paralimit = -1; break; case 'q': verbose = -1; break; case 'r': op |= JF_STOP; break; case 'R': op |= JF_STOP; Rflag = 1; break; case 's': add_param(NULL, NULL, KP_SECURELEVEL, optarg); docf = 0; break; case 'u': add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg); add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER, NULL); docf = 0; break; case 'U': add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg); add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER, "false"); docf = 0; break; case 'v': verbose = 1; break; default: usage(); } } argc -= optind; argv += optind; if (eflag) { /* Just print list of all configured non-wildcard jails */ if (op || argc > 0) usage(); load_config(cfname); show_jails(); exit(0); } /* Find out which of the command line styles this is. */ oldcl = 0; if (!op) { /* Old-style command line with four fixed parameters */ if (argc < 4 || argv[0][0] != '/') usage(); op = JF_START; docf = 0; oldcl = 1; add_param(NULL, NULL, KP_PATH, argv[0]); add_param(NULL, NULL, KP_HOST_HOSTNAME, argv[1]); #if defined(INET) || defined(INET6) if (argv[2][0] != '\0') { for (cs = argv[2];; cs = ncs + 1) { ncs = strchr(cs, ','); if (ncs) *ncs = '\0'; add_param(NULL, NULL, #if defined(INET) && defined(INET6) inet_pton(AF_INET6, cs, &addr6) == 1 ? KP_IP6_ADDR : KP_IP4_ADDR, #elif defined(INET) KP_IP4_ADDR, #elif defined(INET6) KP_IP6_ADDR, #endif cs); if (!ncs) break; } } #endif for (i = 3; i < argc; i++) add_param(NULL, NULL, IP_COMMAND, argv[i]); /* Emulate the defaults from security.jail.* sysctls. */ sysvallen = sizeof(sysval); if (sysctlbyname("security.jail.jailed", &sysval, &sysvallen, NULL, 0) == 0 && sysval == 0) { for (pi = 0; pi < sizeof(perm_sysctl) / sizeof(perm_sysctl[0]); pi++) { sysvallen = sizeof(sysval); if (sysctlbyname(perm_sysctl[pi].name, &sysval, &sysvallen, NULL, 0) == 0) add_param(NULL, NULL, perm_sysctl[pi].ipnum, (sysval ? 1 : 0) ^ perm_sysctl[pi].rev ? NULL : "false"); } } } else if (op == JF_STOP) { /* Jail remove, perhaps using the config file */ if (!docf || argc == 0) usage(); if (!Rflag) for (i = 0; i < argc; i++) if (strchr(argv[i], '=')) usage(); if ((docf = !Rflag && (!strcmp(cfname, "-") || stat(cfname, &st) == 0))) load_config(cfname); note_remove = docf || argc > 1 || wild_jail_name(argv[0]); } else if (argc > 1 || (argc == 1 && strchr(argv[0], '='))) { /* Single jail specified on the command line */ if (Rflag) usage(); docf = 0; for (i = 0; i < argc; i++) { if (!strncmp(argv[i], "command", 7) && (argv[i][7] == '\0' || argv[i][7] == '=')) { if (argv[i][7] == '=') add_param(NULL, NULL, IP_COMMAND, argv[i] + 8); for (i++; i < argc; i++) add_param(NULL, NULL, IP_COMMAND, argv[i]); } #ifdef INET else if (!strncmp(argv[i], "ip4.addr=", 9)) { for (cs = argv[i] + 9;; cs = ncs + 1) { ncs = strchr(cs, ','); if (ncs) *ncs = '\0'; add_param(NULL, NULL, KP_IP4_ADDR, cs); if (!ncs) break; } } #endif #ifdef INET6 else if (!strncmp(argv[i], "ip6.addr=", 9)) { for (cs = argv[i] + 9;; cs = ncs + 1) { ncs = strchr(cs, ','); if (ncs) *ncs = '\0'; add_param(NULL, NULL, KP_IP6_ADDR, cs); if (!ncs) break; } } #endif else add_param(NULL, NULL, 0, argv[i]); } } else { /* From the config file, perhaps with a specified jail */ if (Rflag || !docf) usage(); load_config(cfname); } /* Find out which jails will be run. */ dep_setup(docf); error = 0; if (op == JF_STOP) { for (i = 0; i < argc; i++) if (start_state(argv[i], docf, op, Rflag) < 0) error = 1; } else { if (start_state(argv[0], docf, op, 0) < 0) exit(1); } jfp = NULL; if (JidFile != NULL) { jfp = fopen(JidFile, "w"); if (jfp == NULL) err(1, "open %s", JidFile); setlinebuf(jfp); } setlinebuf(stdout); /* * The main loop: Get an available jail and perform the required * operation on it. When that is done, the jail may be finished, * or it may go back for the next step. */ dying_warned = 0; while ((j = next_jail())) { if (j->flags & JF_FAILED) { error = 1; if (j->comparam == NULL) { dep_done(j, 0); continue; } } if (!(j->flags & JF_PARAMS)) { j->flags |= JF_PARAMS; if (dflag) add_param(j, NULL, IP_ALLOW_DYING, NULL); if (check_intparams(j) < 0) continue; if ((j->flags & (JF_START | JF_SET)) && import_params(j) < 0) continue; } if (j->intparams[IP_ALLOW_DYING] && !dying_warned) { warnx("%s", "the 'allow.dying' parameter and '-d' flag" "are deprecated and have no effect."); dying_warned = 1; } if (!j->jid) running_jid(j); if (finish_command(j)) continue; switch (j->flags & JF_OP_MASK) { /* * These operations just turn into a different op * depending on the jail's current status. */ case JF_START_SET: j->flags = j->jid < 0 ? JF_START : JF_SET; break; case JF_SET_RESTART: if (j->jid < 0) { jail_quoted_warnx(j, "not found", "no jail specified"); failed(j); continue; } j->flags = rdtun_params(j, 0) ? JF_RESTART : JF_SET; if (j->flags == JF_RESTART) dep_reset(j); break; case JF_START_SET_RESTART: j->flags = j->jid < 0 ? JF_START : rdtun_params(j, 0) ? JF_RESTART : JF_SET; if (j->flags == JF_RESTART) dep_reset(j); } switch (j->flags & JF_OP_MASK) { case JF_START: if (j->comparam == NULL) { if (j->jid > 0 && !(j->flags & (JF_DEPEND | JF_WILD))) { jail_quoted_warnx(j, "already exists", NULL); failed(j); continue; } if (dep_check(j)) continue; if (j->jid > 0) goto jail_create_done; j->comparam = startcommands; j->comstring = NULL; } if (next_command(j)) continue; jail_create_done: clear_persist(j); if (jfp != NULL) print_jail(jfp, j, oldcl, 1); dep_done(j, 0); break; case JF_SET: if (j->jid < 0 && !(j->flags & JF_DEPEND)) { jail_quoted_warnx(j, "not found", "no jail specified"); failed(j); continue; } if (dep_check(j)) continue; if (!(j->flags & JF_DEPEND)) { if (rdtun_params(j, 1) < 0 || update_jail(j) < 0) continue; if (verbose >= 0 && (j->name || verbose > 0)) jail_note(j, "updated\n"); } dep_done(j, 0); break; case JF_STOP: case JF_RESTART: if (j->comparam == NULL) { if (dep_check(j)) continue; if (j->jid < 0) { if (!(j->flags & (JF_DEPEND|JF_WILD))) { if (verbose >= 0) jail_quoted_warnx(j, "not found", NULL); failed(j); } goto jail_remove_done; } j->comparam = stopcommands; j->comstring = NULL; } else if ((j->flags & JF_FAILED) && j->jid > 0) goto jail_remove_done; if (next_command(j)) continue; jail_remove_done: dep_done(j, 0); if ((j->flags & (JF_START | JF_FAILED)) == JF_START) { j->comparam = NULL; j->flags &= ~JF_STOP; dep_reset(j); requeue(j, j->ndeps ? &depend : &ready); } break; } } if (jfp != NULL) fclose(jfp); exit(error); } /* * Mark a jail's failure for future handling. */ void failed(struct cfjail *j) { j->flags |= JF_FAILED; TAILQ_REMOVE(j->queue, j, tq); TAILQ_INSERT_HEAD(&ready, j, tq); j->queue = &ready; } /* * Exit slightly more gracefully when out of memory. */ void * emalloc(size_t size) { void *p; p = malloc(size); if (!p) err(1, "malloc"); return p; } void * erealloc(void *ptr, size_t size) { void *p; p = realloc(ptr, size); if (!p) err(1, "malloc"); return p; } char * estrdup(const char *str) { char *ns; ns = strdup(str); if (!ns) err(1, "malloc"); return ns; } /* * Print a message including an optional jail name. */ void jail_note(const struct cfjail *j, const char *fmt, ...) { va_list ap, tap; char *cs; size_t len; va_start(ap, fmt); va_copy(tap, ap); len = vsnprintf(NULL, 0, fmt, tap); va_end(tap); cs = alloca(len + 1); (void)vsnprintf(cs, len + 1, fmt, ap); va_end(ap); if (j->name) printf("%s: %s", j->name, cs); else printf("%s", cs); } /* * Print a warning message including an optional jail name. */ void jail_warnx(const struct cfjail *j, const char *fmt, ...) { va_list ap, tap; char *cs; size_t len; va_start(ap, fmt); va_copy(tap, ap); len = vsnprintf(NULL, 0, fmt, tap); va_end(tap); cs = alloca(len + 1); (void)vsnprintf(cs, len + 1, fmt, ap); va_end(ap); if (j->name) warnx("%s: %s", j->name, cs); else warnx("%s", cs); } /* * Create a new jail. */ int create_jail(struct cfjail *j) { struct stat st; struct jailparam *jp, *setparams, *sjp; const char *path; int dopersist, ns; /* * Check the jail's path, with a better error message than jail_set * gives. */ if ((path = string_param(j->intparams[KP_PATH]))) { if (j->name != NULL && path[0] != '/') { jail_warnx(j, "path %s: not an absolute pathname", path); return -1; } if (stat(path, &st) < 0) { jail_warnx(j, "path %s: %s", path, strerror(errno)); return -1; } if (!S_ISDIR(st.st_mode)) { jail_warnx(j, "path %s: %s", path, strerror(ENOTDIR)); return -1; } } /* * Copy all the parameters, except that "persist" is always set when * there are commands to run later. */ dopersist = !bool_param(j->intparams[KP_PERSIST]) && (j->intparams[IP_EXEC_START] || j->intparams[IP_COMMAND] || j->intparams[IP_EXEC_POSTSTART]); sjp = setparams = alloca((j->njp + dopersist) * sizeof(struct jailparam)); if (dopersist && jailparam_init(sjp++, "persist") < 0) { jail_warnx(j, "%s", jail_errmsg); return -1; } for (jp = j->jp; jp < j->jp + j->njp; jp++) if (!dopersist || !equalopts(jp->jp_name, "persist")) *sjp++ = *jp; ns = sjp - setparams; j->jid = jailparam_set_note(j, setparams, ns, JAIL_CREATE); if (j->jid < 0) { jail_warnx(j, "%s", jail_errmsg); failed(j); } if (dopersist) { jailparam_free(setparams, 1); if (j->jid > 0) j->flags |= JF_PERSIST; } return j->jid; } /* * Remove a temporarily set "persist" parameter. */ static void clear_persist(struct cfjail *j) { struct iovec jiov[4]; int jid; if (!(j->flags & JF_PERSIST)) return; j->flags &= ~JF_PERSIST; jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &j->jid; jiov[1].iov_len = sizeof(j->jid); jiov[2].iov_base = __DECONST(char *, "nopersist"); jiov[2].iov_len = sizeof("nopersist"); jiov[3].iov_base = NULL; jiov[3].iov_len = 0; jid = jail_set(jiov, 4, JAIL_UPDATE); if (verbose > 0) jail_note(j, "jail_set(JAIL_UPDATE) jid=%d nopersist%s%s\n", j->jid, jid < 0 ? ": " : "", jid < 0 ? strerror(errno) : ""); } /* * Set a jail's parameters. */ static int update_jail(struct cfjail *j) { struct jailparam *jp, *setparams, *sjp; int ns, jid; ns = 0; for (jp = j->jp; jp < j->jp + j->njp; jp++) if (!JP_RDTUN(jp)) ns++; if (ns == 0) return 0; sjp = setparams = alloca(++ns * sizeof(struct jailparam)); if (jailparam_init(sjp, "jid") < 0 || jailparam_import_raw(sjp, &j->jid, sizeof j->jid) < 0) { jail_warnx(j, "%s", jail_errmsg); failed(j); return -1; } for (jp = j->jp; jp < j->jp + j->njp; jp++) if (!JP_RDTUN(jp)) *++sjp = *jp; jid = jailparam_set_note(j, setparams, ns, JAIL_UPDATE); if (jid < 0) { jail_warnx(j, "%s", jail_errmsg); failed(j); } jailparam_free(setparams, 1); return jid; } /* * Return if a jail set would change any create-only parameters. */ static int rdtun_params(struct cfjail *j, int dofail) { struct jailparam *jp, *rtparams, *rtjp; const void *jp_value; size_t jp_valuelen; int nrt, rval, bool_true; if (j->flags & JF_RDTUN) return 0; j->flags |= JF_RDTUN; nrt = 0; for (jp = j->jp; jp < j->jp + j->njp; jp++) if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) nrt++; if (nrt == 0) return 0; rtjp = rtparams = alloca(++nrt * sizeof(struct jailparam)); if (jailparam_init(rtjp, "jid") < 0 || jailparam_import_raw(rtjp, &j->jid, sizeof j->jid) < 0) { jail_warnx(j, "%s", jail_errmsg); exit(1); } for (jp = j->jp; jp < j->jp + j->njp; jp++) if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) { *++rtjp = *jp; rtjp->jp_value = NULL; } rval = 0; if (jailparam_get(rtparams, nrt, 0) > 0) { rtjp = rtparams + 1; for (jp = j->jp; rtjp < rtparams + nrt; jp++) { if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) { jp_value = jp->jp_value; jp_valuelen = jp->jp_valuelen; if (jp_value == NULL && jp_valuelen > 0) { if (jp->jp_flags & (JP_BOOL | JP_NOBOOL | JP_JAILSYS)) { bool_true = 1; jp_value = &bool_true; jp_valuelen = sizeof(bool_true); } else if ((jp->jp_ctltype & CTLTYPE) == CTLTYPE_STRING) jp_value = ""; else jp_valuelen = 0; } if (rtjp->jp_valuelen != jp_valuelen || (CTLTYPE_STRING ? strncmp(rtjp->jp_value, jp_value, jp_valuelen) : memcmp(rtjp->jp_value, jp_value, jp_valuelen))) { if (dofail) { jail_warnx(j, "%s cannot be " "changed after creation", jp->jp_name); failed(j); rval = -1; } else rval = 1; break; } rtjp++; } } } for (rtjp = rtparams + 1; rtjp < rtparams + nrt; rtjp++) rtjp->jp_name = NULL; jailparam_free(rtparams, nrt); return rval; } /* * Get the jail's jid if it is running. */ static void running_jid(struct cfjail *j) { struct iovec jiov[2]; const char *pval; char *ep; int jid; if ((pval = string_param(j->intparams[KP_JID]))) { if (!(jid = strtol(pval, &ep, 10)) || *ep) { j->jid = -1; return; } jiov[0].iov_base = __DECONST(char *, "jid"); jiov[0].iov_len = sizeof("jid"); jiov[1].iov_base = &jid; jiov[1].iov_len = sizeof(jid); } else if ((pval = string_param(j->intparams[KP_NAME]))) { jiov[0].iov_base = __DECONST(char *, "name"); jiov[0].iov_len = sizeof("name"); jiov[1].iov_len = strlen(pval) + 1; jiov[1].iov_base = alloca(jiov[1].iov_len); strcpy(jiov[1].iov_base, pval); } else { j->jid = -1; return; } j->jid = jail_get(jiov, 2, 0); } static void jail_quoted_warnx(const struct cfjail *j, const char *name_msg, const char *noname_msg) { const char *pval; if ((pval = j->name) || (pval = string_param(j->intparams[KP_JID])) || (pval = string_param(j->intparams[KP_NAME]))) warnx("\"%s\" %s", pval, name_msg); else warnx("%s", noname_msg); } /* * Set jail parameters and possibly print them out. */ static int jailparam_set_note(const struct cfjail *j, struct jailparam *jp, unsigned njp, int flags) { char *value; int jid; unsigned i; jid = jailparam_set(jp, njp, flags); if (verbose > 0) { jail_note(j, "jail_set(%s)", (flags & (JAIL_CREATE | JAIL_UPDATE)) == JAIL_CREATE ? "JAIL_CREATE" : "JAIL_UPDATE"); for (i = 0; i < njp; i++) { printf(" %s", jp[i].jp_name); if (jp[i].jp_value == NULL) continue; putchar('='); value = jailparam_export(jp + i); if (value == NULL) err(1, "jailparam_export"); quoted_print(stdout, value); free(value); } if (jid < 0) printf(": %s", strerror(errno)); printf("\n"); } return jid; } /* * Print a jail record. */ static void print_jail(FILE *fp, struct cfjail *j, int oldcl, int running) { struct cfparam *p; int printsep; if (oldcl) { if (running) fprintf(fp, "%d%s", j->jid, separator); print_param(fp, j->intparams[KP_PATH], ',', 0); fputs(separator, fp); print_param(fp, j->intparams[KP_HOST_HOSTNAME], ',', 0); fputs(separator, fp); #ifdef INET print_param(fp, j->intparams[KP_IP4_ADDR], ',', 0); #ifdef INET6 if (j->intparams[KP_IP4_ADDR] && !TAILQ_EMPTY(&j->intparams[KP_IP4_ADDR]->val) && j->intparams[KP_IP6_ADDR] && !TAILQ_EMPTY(&j->intparams[KP_IP6_ADDR]->val)) putc(',', fp); #endif #endif #ifdef INET6 print_param(fp, j->intparams[KP_IP6_ADDR], ',', 0); #endif fputs(separator, fp); print_param(fp, j->intparams[IP_COMMAND], ' ', 0); } else { printsep = 0; if (running) { fprintf(fp, "jid=%d", j->jid); printsep = 1; } TAILQ_FOREACH(p, &j->params, tq) if (strcmp(p->name, "jid")) { if (printsep) fputs(separator, fp); else printsep = 1; print_param(fp, p, ',', 1); } } putc('\n', fp); } /* * Exhibit list of all configured non-wildcard jails */ static void show_jails(void) { struct cfjail *j; TAILQ_FOREACH(j, &cfjails, tq) print_jail(stdout, j, 0, 0); } /* * Print a parameter value, or a name=value pair. */ static void print_param(FILE *fp, const struct cfparam *p, int sep, int doname) { const struct cfstring *s, *ts; if (doname) fputs(p->name, fp); if (p == NULL || TAILQ_EMPTY(&p->val)) return; if (doname) putc('=', fp); TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) { quoted_print(fp, s->s); if (ts != NULL) putc(sep, fp); } } /* * Print a string with quotes around spaces. */ static void quoted_print(FILE *fp, char *str) { int c, qc; char *p = str; qc = !*p ? '"' : strchr(p, '\'') ? '"' : strchr(p, '"') ? '\'' : strchr(p, ' ') || strchr(p, '\t') ? '"' : 0; if (qc) putc(qc, fp); while ((c = *p++)) { if (c == '\\' || c == qc) putc('\\', fp); putc(c, fp); } if (qc) putc(qc, fp); } static void usage(void) { (void)fprintf(stderr, "usage: jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n" " -[cmr] param=value ... [command=command ...]\n" " jail [-dqv] [-f file] -[cmr] [jail]\n" " jail [-qv] [-f file] -[rR] ['*' | jail ...]\n" " jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n" " [-n jailname] [-s securelevel]\n" " path hostname ip[,...] command ...\n" " jail [-f file] -e separator\n"); exit(1); }