120};
121
122int
123main(int argc, char **argv)
124{
125 struct stat st;
126 FILE *jfp;
127 struct cfjail *j;
128 char *JidFile;
129 size_t sysvallen;
130 unsigned op, pi;
131 int ch, docf, error, i, oldcl, sysval;
132 int dflag, iflag, Rflag;
133 char enforce_statfs[4];
134#if defined(INET) || defined(INET6)
135 char *cs, *ncs;
136#endif
137#if defined(INET) && defined(INET6)
138 struct in6_addr addr6;
139#endif
140
141 op = 0;
142 dflag = iflag = Rflag = 0;
143 docf = 1;
144 cfname = CONF_FILE;
145 JidFile = NULL;
146
147 while ((ch = getopt(argc, argv, "cdf:hiJ:lmn:p:qrRs:U:v")) != -1) {
148 switch (ch) {
149 case 'c':
150 op |= JF_START;
151 break;
152 case 'd':
153 dflag = 1;
154 break;
155 case 'f':
156 cfname = optarg;
157 break;
158 case 'h':
159#if defined(INET) || defined(INET6)
160 add_param(NULL, NULL, IP_IP_HOSTNAME, NULL);
161#endif
162 docf = 0;
163 break;
164 case 'i':
165 iflag = 1;
166 verbose = -1;
167 break;
168 case 'J':
169 JidFile = optarg;
170 break;
171 case 'l':
172 add_param(NULL, NULL, IP_EXEC_CLEAN, NULL);
173 docf = 0;
174 break;
175 case 'm':
176 op |= JF_SET;
177 break;
178 case 'n':
179 add_param(NULL, NULL, KP_NAME, optarg);
180 docf = 0;
181 break;
182 case 'p':
183 paralimit = strtol(optarg, NULL, 10);
184 if (paralimit == 0)
185 paralimit = -1;
186 break;
187 case 'q':
188 verbose = -1;
189 break;
190 case 'r':
191 op |= JF_STOP;
192 break;
193 case 'R':
194 op |= JF_STOP;
195 Rflag = 1;
196 break;
197 case 's':
198 add_param(NULL, NULL, KP_SECURELEVEL, optarg);
199 docf = 0;
200 break;
201 case 'u':
202 add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg);
203 add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER, NULL);
204 docf = 0;
205 break;
206 case 'U':
207 add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg);
208 add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER,
209 "false");
210 docf = 0;
211 break;
212 case 'v':
213 verbose = 1;
214 break;
215 default:
216 usage();
217 }
218 }
219 argc -= optind;
220 argv += optind;
221
222 /* Find out which of the four command line styles this is. */
223 oldcl = 0;
224 if (!op) {
225 /* Old-style command line with four fixed parameters */
226 if (argc < 4 || argv[0][0] != '/')
227 usage();
228 op = JF_START;
229 docf = 0;
230 oldcl = 1;
231 add_param(NULL, NULL, KP_PATH, argv[0]);
232 add_param(NULL, NULL, KP_HOST_HOSTNAME, argv[1]);
233#if defined(INET) || defined(INET6)
234 if (argv[2][0] != '\0') {
235 for (cs = argv[2];; cs = ncs + 1) {
236 ncs = strchr(cs, ',');
237 if (ncs)
238 *ncs = '\0';
239 add_param(NULL, NULL,
240#if defined(INET) && defined(INET6)
241 inet_pton(AF_INET6, cs, &addr6) == 1
242 ? KP_IP6_ADDR : KP_IP4_ADDR,
243#elif defined(INET)
244 KP_IP4_ADDR,
245#elif defined(INET6)
246 KP_IP6_ADDR,
247#endif
248 cs);
249 if (!ncs)
250 break;
251 }
252 }
253#endif
254 for (i = 3; i < argc; i++)
255 add_param(NULL, NULL, IP_COMMAND, argv[i]);
256 /* Emulate the defaults from security.jail.* sysctls. */
257 sysvallen = sizeof(sysval);
258 if (sysctlbyname("security.jail.jailed", &sysval, &sysvallen,
259 NULL, 0) == 0 && sysval == 0) {
260 for (pi = 0; pi < sizeof(perm_sysctl) /
261 sizeof(perm_sysctl[0]); pi++) {
262 sysvallen = sizeof(sysval);
263 if (sysctlbyname(perm_sysctl[pi].name,
264 &sysval, &sysvallen, NULL, 0) == 0)
265 add_param(NULL, NULL,
266 perm_sysctl[pi].ipnum,
267 (sysval ? 1 : 0) ^
268 perm_sysctl[pi].rev
269 ? NULL : "false");
270 }
271 sysvallen = sizeof(sysval);
272 if (sysctlbyname("security.jail.enforce_statfs",
273 &sysval, &sysvallen, NULL, 0) == 0) {
274 snprintf(enforce_statfs,
275 sizeof(enforce_statfs), "%d", sysval);
276 add_param(NULL, NULL, KP_ENFORCE_STATFS,
277 enforce_statfs);
278 }
279 }
280 } else if (op == JF_STOP) {
281 /* Jail remove, perhaps using the config file */
282 if (!docf || argc == 0)
283 usage();
284 if (!Rflag)
285 for (i = 0; i < argc; i++)
286 if (strchr(argv[i], '='))
287 usage();
288 if ((docf = !Rflag &&
289 (!strcmp(cfname, "-") || stat(cfname, &st) == 0)))
290 load_config();
291 note_remove = docf || argc > 1 || wild_jail_name(argv[0]);
292 } else if (argc > 1 || (argc == 1 && strchr(argv[0], '='))) {
293 /* Single jail specified on the command line */
294 if (Rflag)
295 usage();
296 docf = 0;
297 for (i = 0; i < argc; i++) {
298 if (!strncmp(argv[i], "command", 7) &&
299 (argv[i][7] == '\0' || argv[i][7] == '=')) {
300 if (argv[i][7] == '=')
301 add_param(NULL, NULL, IP_COMMAND,
302 argv[i] + 8);
303 for (i++; i < argc; i++)
304 add_param(NULL, NULL, IP_COMMAND,
305 argv[i]);
306 break;
307 }
308 add_param(NULL, NULL, 0, argv[i]);
309 }
310 } else {
311 /* From the config file, perhaps with a specified jail */
312 if (Rflag || !docf)
313 usage();
314 load_config();
315 }
316
317 /* Find out which jails will be run. */
318 dep_setup(docf);
319 error = 0;
320 if (op == JF_STOP) {
321 for (i = 0; i < argc; i++)
322 if (start_state(argv[i], docf, op, Rflag) < 0)
323 error = 1;
324 } else {
325 if (start_state(argv[0], docf, op, 0) < 0)
326 exit(1);
327 }
328
329 jfp = NULL;
330 if (JidFile != NULL) {
331 jfp = fopen(JidFile, "w");
332 if (jfp == NULL)
333 err(1, "open %s", JidFile);
334 setlinebuf(jfp);
335 }
336 setlinebuf(stdout);
337
338 /*
339 * The main loop: Get an available jail and perform the required
340 * operation on it. When that is done, the jail may be finished,
341 * or it may go back for the next step.
342 */
343 while ((j = next_jail()))
344 {
345 if (j->flags & JF_FAILED) {
346 error = 1;
347 if (j->comparam == NULL) {
348 dep_done(j, 0);
349 continue;
350 }
351 }
352 if (!(j->flags & JF_PARAMS))
353 {
354 j->flags |= JF_PARAMS;
355 if (dflag)
356 add_param(j, NULL, IP_ALLOW_DYING, NULL);
357 if (check_intparams(j) < 0)
358 continue;
359 if ((j->flags & (JF_START | JF_SET)) &&
360 import_params(j) < 0)
361 continue;
362 }
363 if (!j->jid)
364 running_jid(j,
365 (j->flags & (JF_SET | JF_DEPEND)) == JF_SET
366 ? dflag || bool_param(j->intparams[IP_ALLOW_DYING])
367 : 0);
368 if (finish_command(j))
369 continue;
370
371 switch (j->flags & JF_OP_MASK) {
372 /*
373 * These operations just turn into a different op
374 * depending on the jail's current status.
375 */
376 case JF_START_SET:
377 j->flags = j->jid < 0 ? JF_START : JF_SET;
378 break;
379 case JF_SET_RESTART:
380 if (j->jid < 0) {
381 jail_quoted_warnx(j, "not found",
382 "no jail specified");
383 failed(j);
384 continue;
385 }
386 j->flags = rdtun_params(j, 0) ? JF_RESTART : JF_SET;
387 if (j->flags == JF_RESTART)
388 dep_reset(j);
389 break;
390 case JF_START_SET_RESTART:
391 j->flags = j->jid < 0 ? JF_START
392 : rdtun_params(j, 0) ? JF_RESTART : JF_SET;
393 if (j->flags == JF_RESTART)
394 dep_reset(j);
395 }
396
397 switch (j->flags & JF_OP_MASK) {
398 case JF_START:
399 if (j->comparam == NULL) {
400 if (j->jid > 0 &&
401 !(j->flags & (JF_DEPEND | JF_WILD))) {
402 jail_quoted_warnx(j, "already exists",
403 NULL);
404 failed(j);
405 continue;
406 }
407 if (dep_check(j))
408 continue;
409 if (j->jid > 0)
410 goto jail_create_done;
411 j->comparam = startcommands;
412 j->comstring = NULL;
413 }
414 if (next_command(j))
415 continue;
416 jail_create_done:
417 clear_persist(j);
418 if (iflag)
419 printf("%d\n", j->jid);
420 if (jfp != NULL)
421 print_jail(jfp, j, oldcl);
422 dep_done(j, 0);
423 break;
424
425 case JF_SET:
426 if (j->jid < 0 && !(j->flags & JF_DEPEND)) {
427 jail_quoted_warnx(j, "not found",
428 "no jail specified");
429 failed(j);
430 continue;
431 }
432 if (dep_check(j))
433 continue;
434 if (!(j->flags & JF_DEPEND)) {
435 if (rdtun_params(j, 1) < 0 ||
436 update_jail(j) < 0)
437 continue;
438 if (verbose >= 0 && (j->name || verbose > 0))
439 jail_note(j, "updated\n");
440 }
441 dep_done(j, 0);
442 break;
443
444 case JF_STOP:
445 case JF_RESTART:
446 if (j->comparam == NULL) {
447 if (dep_check(j))
448 continue;
449 if (j->jid < 0) {
450 if (!(j->flags & (JF_DEPEND | JF_WILD))
451 && verbose >= 0)
452 jail_quoted_warnx(j,
453 "not found", NULL);
454 goto jail_remove_done;
455 }
456 j->comparam = stopcommands;
457 j->comstring = NULL;
458 } else if ((j->flags & JF_FAILED) && j->jid > 0)
459 goto jail_remove_done;
460 if (next_command(j))
461 continue;
462 jail_remove_done:
463 dep_done(j, 0);
464 if ((j->flags & (JF_START | JF_FAILED)) == JF_START) {
465 j->comparam = NULL;
466 j->flags &= ~JF_STOP;
467 dep_reset(j);
468 requeue(j, j->ndeps ? &depend : &ready);
469 }
470 break;
471 }
472 }
473
474 if (jfp != NULL)
475 fclose(jfp);
476 exit(error);
477}
478
479/*
480 * Mark a jail's failure for future handling.
481 */
482void
483failed(struct cfjail *j)
484{
485 j->flags |= JF_FAILED;
486 TAILQ_REMOVE(j->queue, j, tq);
487 TAILQ_INSERT_HEAD(&ready, j, tq);
488 j->queue = &ready;
489}
490
491/*
492 * Exit slightly more gracefully when out of memory.
493 */
494void *
495emalloc(size_t size)
496{
497 void *p;
498
499 p = malloc(size);
500 if (!p)
501 err(1, "malloc");
502 return p;
503}
504
505void *
506erealloc(void *ptr, size_t size)
507{
508 void *p;
509
510 p = realloc(ptr, size);
511 if (!p)
512 err(1, "malloc");
513 return p;
514}
515
516char *
517estrdup(const char *str)
518{
519 char *ns;
520
521 ns = strdup(str);
522 if (!ns)
523 err(1, "malloc");
524 return ns;
525}
526
527/*
528 * Print a message including an optional jail name.
529 */
530void
531jail_note(const struct cfjail *j, const char *fmt, ...)
532{
533 va_list ap, tap;
534 char *cs;
535 size_t len;
536
537 va_start(ap, fmt);
538 va_copy(tap, ap);
539 len = vsnprintf(NULL, 0, fmt, tap);
540 va_end(tap);
541 cs = alloca(len + 1);
542 (void)vsnprintf(cs, len + 1, fmt, ap);
543 va_end(ap);
544 if (j->name)
545 printf("%s: %s", j->name, cs);
546 else
547 printf("%s", cs);
548}
549
550/*
551 * Print a warning message including an optional jail name.
552 */
553void
554jail_warnx(const struct cfjail *j, const char *fmt, ...)
555{
556 va_list ap, tap;
557 char *cs;
558 size_t len;
559
560 va_start(ap, fmt);
561 va_copy(tap, ap);
562 len = vsnprintf(NULL, 0, fmt, tap);
563 va_end(tap);
564 cs = alloca(len + 1);
565 (void)vsnprintf(cs, len + 1, fmt, ap);
566 va_end(ap);
567 if (j->name)
568 warnx("%s: %s", j->name, cs);
569 else
570 warnx("%s", cs);
571}
572
573/*
574 * Create a new jail.
575 */
576int
577create_jail(struct cfjail *j)
578{
579 struct iovec jiov[4];
580 struct stat st;
581 struct jailparam *jp, *setparams, *setparams2, *sjp;
582 const char *path;
583 int dopersist, ns, jid, dying, didfail;
584
585 /*
586 * Check the jail's path, with a better error message than jail_set
587 * gives.
588 */
589 if ((path = string_param(j->intparams[KP_PATH]))) {
590 if (j->name != NULL && path[0] != '/') {
591 jail_warnx(j, "path %s: not an absolute pathname",
592 path);
593 return -1;
594 }
595 if (stat(path, &st) < 0) {
596 jail_warnx(j, "path %s: %s", path, strerror(errno));
597 return -1;
598 }
599 if (!S_ISDIR(st.st_mode)) {
600 jail_warnx(j, "path %s: %s", path, strerror(ENOTDIR));
601 return -1;
602 }
603 }
604
605 /*
606 * Copy all the parameters, except that "persist" is always set when
607 * there are commands to run later.
608 */
609 dopersist = !bool_param(j->intparams[KP_PERSIST]) &&
610 (j->intparams[IP_EXEC_START] || j->intparams[IP_COMMAND] ||
611 j->intparams[IP_EXEC_POSTSTART]);
612 sjp = setparams =
613 alloca((j->njp + dopersist) * sizeof(struct jailparam));
614 if (dopersist && jailparam_init(sjp++, "persist") < 0) {
615 jail_warnx(j, "%s", jail_errmsg);
616 return -1;
617 }
618 for (jp = j->jp; jp < j->jp + j->njp; jp++)
619 if (!dopersist || !equalopts(jp->jp_name, "persist"))
620 *sjp++ = *jp;
621 ns = sjp - setparams;
622
623 didfail = 0;
624 j->jid = jailparam_set_note(j, setparams, ns, JAIL_CREATE);
625 if (j->jid < 0 && errno == EEXIST &&
626 bool_param(j->intparams[IP_ALLOW_DYING]) &&
627 int_param(j->intparams[KP_JID], &jid) && jid != 0) {
628 /*
629 * The jail already exists, but may be dying.
630 * Make sure it is, in which case an update is appropriate.
631 */
632 *(const void **)&jiov[0].iov_base = "jid";
633 jiov[0].iov_len = sizeof("jid");
634 jiov[1].iov_base = &jid;
635 jiov[1].iov_len = sizeof(jid);
636 *(const void **)&jiov[2].iov_base = "dying";
637 jiov[2].iov_len = sizeof("dying");
638 jiov[3].iov_base = &dying;
639 jiov[3].iov_len = sizeof(dying);
640 if (jail_get(jiov, 4, JAIL_DYING) < 0) {
641 /*
642 * It could be that the jail just barely finished
643 * dying, or it could be that the jid never existed
644 * but the name does. In either case, another try
645 * at creating the jail should do the right thing.
646 */
647 if (errno == ENOENT)
648 j->jid = jailparam_set_note(j, setparams, ns,
649 JAIL_CREATE);
650 } else if (dying) {
651 j->jid = jid;
652 if (rdtun_params(j, 1) < 0) {
653 j->jid = -1;
654 didfail = 1;
655 } else {
656 sjp = setparams2 = alloca((j->njp + dopersist) *
657 sizeof(struct jailparam));
658 for (jp = setparams; jp < setparams + ns; jp++)
659 if (!JP_RDTUN(jp) ||
660 !strcmp(jp->jp_name, "jid"))
661 *sjp++ = *jp;
662 j->jid = jailparam_set_note(j, setparams2,
663 sjp - setparams2, JAIL_UPDATE | JAIL_DYING);
664 /*
665 * Again, perhaps the jail just finished dying.
666 */
667 if (j->jid < 0 && errno == ENOENT)
668 j->jid = jailparam_set_note(j,
669 setparams, ns, JAIL_CREATE);
670 }
671 }
672 }
673 if (j->jid < 0 && !didfail) {
674 jail_warnx(j, "%s", jail_errmsg);
675 failed(j);
676 }
677 if (dopersist) {
678 jailparam_free(setparams, 1);
679 if (j->jid > 0)
680 j->flags |= JF_PERSIST;
681 }
682 return j->jid;
683}
684
685/*
686 * Remove a temporarily set "persist" parameter.
687 */
688static void
689clear_persist(struct cfjail *j)
690{
691 struct iovec jiov[4];
692 int jid;
693
694 if (!(j->flags & JF_PERSIST))
695 return;
696 j->flags &= ~JF_PERSIST;
697 *(const void **)&jiov[0].iov_base = "jid";
698 jiov[0].iov_len = sizeof("jid");
699 jiov[1].iov_base = &j->jid;
700 jiov[1].iov_len = sizeof(j->jid);
701 *(const void **)&jiov[2].iov_base = "nopersist";
702 jiov[2].iov_len = sizeof("nopersist");
703 jiov[3].iov_base = NULL;
704 jiov[3].iov_len = 0;
705 jid = jail_set(jiov, 4, JAIL_UPDATE);
706 if (verbose > 0)
707 jail_note(j, "jail_set(JAIL_UPDATE) jid=%d nopersist%s%s\n",
708 j->jid, jid < 0 ? ": " : "",
709 jid < 0 ? strerror(errno) : "");
710}
711
712/*
713 * Set a jail's parameters.
714 */
715static int
716update_jail(struct cfjail *j)
717{
718 struct jailparam *jp, *setparams, *sjp;
719 int ns, jid;
720
721 ns = 0;
722 for (jp = j->jp; jp < j->jp + j->njp; jp++)
723 if (!JP_RDTUN(jp))
724 ns++;
725 if (ns == 0)
726 return 0;
727 sjp = setparams = alloca(++ns * sizeof(struct jailparam));
728 if (jailparam_init(sjp, "jid") < 0 ||
729 jailparam_import_raw(sjp, &j->jid, sizeof j->jid) < 0) {
730 jail_warnx(j, "%s", jail_errmsg);
731 failed(j);
732 return -1;
733 }
734 for (jp = j->jp; jp < j->jp + j->njp; jp++)
735 if (!JP_RDTUN(jp))
736 *++sjp = *jp;
737
738 jid = jailparam_set_note(j, setparams, ns,
739 bool_param(j->intparams[IP_ALLOW_DYING])
740 ? JAIL_UPDATE | JAIL_DYING : JAIL_UPDATE);
741 if (jid < 0) {
742 jail_warnx(j, "%s", jail_errmsg);
743 failed(j);
744 }
745 jailparam_free(setparams, 1);
746 return jid;
747}
748
749/*
750 * Return if a jail set would change any create-only parameters.
751 */
752static int
753rdtun_params(struct cfjail *j, int dofail)
754{
755 struct jailparam *jp, *rtparams, *rtjp;
756 int nrt, rval;
757
758 if (j->flags & JF_RDTUN)
759 return 0;
760 j->flags |= JF_RDTUN;
761 nrt = 0;
762 for (jp = j->jp; jp < j->jp + j->njp; jp++)
763 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid"))
764 nrt++;
765 if (nrt == 0)
766 return 0;
767 rtjp = rtparams = alloca(++nrt * sizeof(struct jailparam));
768 if (jailparam_init(rtjp, "jid") < 0 ||
769 jailparam_import_raw(rtjp, &j->jid, sizeof j->jid) < 0) {
770 jail_warnx(j, "%s", jail_errmsg);
771 exit(1);
772 }
773 for (jp = j->jp; jp < j->jp + j->njp; jp++)
774 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid"))
775 *++rtjp = *jp;
776 rval = 0;
777 if (jailparam_get(rtparams, nrt,
778 bool_param(j->intparams[IP_ALLOW_DYING]) ? JAIL_DYING : 0) > 0) {
779 rtjp = rtparams + 1;
780 for (jp = j->jp, rtjp = rtparams + 1; rtjp < rtparams + nrt;
781 jp++) {
782 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) {
783 if (!((jp->jp_flags & (JP_BOOL | JP_NOBOOL)) &&
784 jp->jp_valuelen == 0 &&
785 *(int *)jp->jp_value) &&
786 !(rtjp->jp_valuelen == jp->jp_valuelen &&
787 !memcmp(rtjp->jp_value, jp->jp_value,
788 jp->jp_valuelen))) {
789 if (dofail) {
790 jail_warnx(j, "%s cannot be "
791 "changed after creation",
792 jp->jp_name);
793 failed(j);
794 rval = -1;
795 } else
796 rval = 1;
797 break;
798 }
799 rtjp++;
800 }
801 }
802 }
803 for (rtjp = rtparams + 1; rtjp < rtparams + nrt; rtjp++)
804 rtjp->jp_name = NULL;
805 jailparam_free(rtparams, nrt);
806 return rval;
807}
808
809/*
810 * Get the jail's jid if it is running.
811 */
812static void
813running_jid(struct cfjail *j, int dflag)
814{
815 struct iovec jiov[2];
816 const char *pval;
817 char *ep;
818 int jid;
819
820 if ((pval = string_param(j->intparams[KP_JID]))) {
821 if (!(jid = strtol(pval, &ep, 10)) || *ep) {
822 j->jid = -1;
823 return;
824 }
825 *(const void **)&jiov[0].iov_base = "jid";
826 jiov[0].iov_len = sizeof("jid");
827 jiov[1].iov_base = &jid;
828 jiov[1].iov_len = sizeof(jid);
829 } else if ((pval = string_param(j->intparams[KP_NAME]))) {
830 *(const void **)&jiov[0].iov_base = "name";
831 jiov[0].iov_len = sizeof("name");
832 jiov[1].iov_len = strlen(pval) + 1;
833 jiov[1].iov_base = alloca(jiov[1].iov_len);
834 strcpy(jiov[1].iov_base, pval);
835 } else {
836 j->jid = -1;
837 return;
838 }
839 j->jid = jail_get(jiov, 2, dflag ? JAIL_DYING : 0);
840}
841
842static void
843jail_quoted_warnx(const struct cfjail *j, const char *name_msg,
844 const char *noname_msg)
845{
846 const char *pval;
847
848 if ((pval = j->name) || (pval = string_param(j->intparams[KP_JID])) ||
849 (pval = string_param(j->intparams[KP_NAME])))
850 warnx("\"%s\" %s", pval, name_msg);
851 else
852 warnx("%s", noname_msg);
853}
854
855/*
856 * Set jail parameters and possible print them out.
857 */
858static int
859jailparam_set_note(const struct cfjail *j, struct jailparam *jp, unsigned njp,
860 int flags)
861{
862 char *value;
863 int jid;
864 unsigned i;
865
866 jid = jailparam_set(jp, njp, flags);
867 if (verbose > 0) {
868 jail_note(j, "jail_set(%s%s)",
869 (flags & (JAIL_CREATE | JAIL_UPDATE)) == JAIL_CREATE
870 ? "JAIL_CREATE" : "JAIL_UPDATE",
871 (flags & JAIL_DYING) ? " | JAIL_DYING" : "");
872 for (i = 0; i < njp; i++) {
873 printf(" %s", jp[i].jp_name);
874 if (jp[i].jp_value == NULL)
875 continue;
876 putchar('=');
877 value = jailparam_export(jp + i);
878 if (value == NULL)
879 err(1, "jailparam_export");
880 quoted_print(stdout, value);
881 free(value);
882 }
883 if (jid < 0)
884 printf(": %s", strerror(errno));
885 printf("\n");
886 }
887 return jid;
888}
889
890/*
891 * Print a jail record.
892 */
893static void
894print_jail(FILE *fp, struct cfjail *j, int oldcl)
895{
896 struct cfparam *p;
897
898 if (oldcl) {
899 fprintf(fp, "%d\t", j->jid);
900 print_param(fp, j->intparams[KP_PATH], ',', 0);
901 putc('\t', fp);
902 print_param(fp, j->intparams[KP_HOST_HOSTNAME], ',', 0);
903 putc('\t', fp);
904#ifdef INET
905 print_param(fp, j->intparams[KP_IP4_ADDR], ',', 0);
906#ifdef INET6
907 if (j->intparams[KP_IP4_ADDR] &&
908 !TAILQ_EMPTY(&j->intparams[KP_IP4_ADDR]->val) &&
909 j->intparams[KP_IP6_ADDR] &&
910 !TAILQ_EMPTY(&j->intparams[KP_IP6_ADDR]->val))
911 putc(',', fp);
912#endif
913#endif
914#ifdef INET6
915 print_param(fp, j->intparams[KP_IP6_ADDR], ',', 0);
916#endif
917 putc('\t', fp);
918 print_param(fp, j->intparams[IP_COMMAND], ' ', 0);
919 } else {
920 fprintf(fp, "jid=%d", j->jid);
921 TAILQ_FOREACH(p, &j->params, tq)
922 if (strcmp(p->name, "jid")) {
923 putc(' ', fp);
924 print_param(fp, p, ',', 1);
925 }
926 }
927 putc('\n', fp);
928}
929
930/*
931 * Print a parameter value, or a name=value pair.
932 */
933static void
934print_param(FILE *fp, const struct cfparam *p, int sep, int doname)
935{
936 const struct cfstring *s, *ts;
937
938 if (doname)
939 fputs(p->name, fp);
940 if (p == NULL || TAILQ_EMPTY(&p->val))
941 return;
942 if (doname)
943 putc('=', fp);
944 TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
945 quoted_print(fp, s->s);
946 if (ts != NULL)
947 putc(sep, fp);
948 }
949}
950
951/*
952 * Print a string with quotes around spaces.
953 */
954static void
955quoted_print(FILE *fp, char *str)
956{
957 int c, qc;
958 char *p = str;
959
960 qc = !*p ? '"'
961 : strchr(p, '\'') ? '"'
962 : strchr(p, '"') ? '\''
963 : strchr(p, ' ') || strchr(p, '\t') ? '"'
964 : 0;
965 if (qc)
966 putc(qc, fp);
967 while ((c = *p++)) {
968 if (c == '\\' || c == qc)
969 putc('\\', fp);
970 putc(c, fp);
971 }
972 if (qc)
973 putc(qc, fp);
974}
975
976static void
977usage(void)
978{
979
980 (void)fprintf(stderr,
981 "usage: jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n"
982 " -[cmr] param=value ... [command=command ...]\n"
983 " jail [-dqv] [-f file] -[cmr] [jail]\n"
984 " jail [-qv] [-f file] -[rR] ['*' | jail ...]\n"
985 " jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n"
986 " [-n jailname] [-s securelevel]\n"
987 " path hostname [ip[,...]] command ...\n");
988 exit(1);
989}
| 120};
121
122int
123main(int argc, char **argv)
124{
125 struct stat st;
126 FILE *jfp;
127 struct cfjail *j;
128 char *JidFile;
129 size_t sysvallen;
130 unsigned op, pi;
131 int ch, docf, error, i, oldcl, sysval;
132 int dflag, iflag, Rflag;
133 char enforce_statfs[4];
134#if defined(INET) || defined(INET6)
135 char *cs, *ncs;
136#endif
137#if defined(INET) && defined(INET6)
138 struct in6_addr addr6;
139#endif
140
141 op = 0;
142 dflag = iflag = Rflag = 0;
143 docf = 1;
144 cfname = CONF_FILE;
145 JidFile = NULL;
146
147 while ((ch = getopt(argc, argv, "cdf:hiJ:lmn:p:qrRs:U:v")) != -1) {
148 switch (ch) {
149 case 'c':
150 op |= JF_START;
151 break;
152 case 'd':
153 dflag = 1;
154 break;
155 case 'f':
156 cfname = optarg;
157 break;
158 case 'h':
159#if defined(INET) || defined(INET6)
160 add_param(NULL, NULL, IP_IP_HOSTNAME, NULL);
161#endif
162 docf = 0;
163 break;
164 case 'i':
165 iflag = 1;
166 verbose = -1;
167 break;
168 case 'J':
169 JidFile = optarg;
170 break;
171 case 'l':
172 add_param(NULL, NULL, IP_EXEC_CLEAN, NULL);
173 docf = 0;
174 break;
175 case 'm':
176 op |= JF_SET;
177 break;
178 case 'n':
179 add_param(NULL, NULL, KP_NAME, optarg);
180 docf = 0;
181 break;
182 case 'p':
183 paralimit = strtol(optarg, NULL, 10);
184 if (paralimit == 0)
185 paralimit = -1;
186 break;
187 case 'q':
188 verbose = -1;
189 break;
190 case 'r':
191 op |= JF_STOP;
192 break;
193 case 'R':
194 op |= JF_STOP;
195 Rflag = 1;
196 break;
197 case 's':
198 add_param(NULL, NULL, KP_SECURELEVEL, optarg);
199 docf = 0;
200 break;
201 case 'u':
202 add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg);
203 add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER, NULL);
204 docf = 0;
205 break;
206 case 'U':
207 add_param(NULL, NULL, IP_EXEC_JAIL_USER, optarg);
208 add_param(NULL, NULL, IP_EXEC_SYSTEM_JAIL_USER,
209 "false");
210 docf = 0;
211 break;
212 case 'v':
213 verbose = 1;
214 break;
215 default:
216 usage();
217 }
218 }
219 argc -= optind;
220 argv += optind;
221
222 /* Find out which of the four command line styles this is. */
223 oldcl = 0;
224 if (!op) {
225 /* Old-style command line with four fixed parameters */
226 if (argc < 4 || argv[0][0] != '/')
227 usage();
228 op = JF_START;
229 docf = 0;
230 oldcl = 1;
231 add_param(NULL, NULL, KP_PATH, argv[0]);
232 add_param(NULL, NULL, KP_HOST_HOSTNAME, argv[1]);
233#if defined(INET) || defined(INET6)
234 if (argv[2][0] != '\0') {
235 for (cs = argv[2];; cs = ncs + 1) {
236 ncs = strchr(cs, ',');
237 if (ncs)
238 *ncs = '\0';
239 add_param(NULL, NULL,
240#if defined(INET) && defined(INET6)
241 inet_pton(AF_INET6, cs, &addr6) == 1
242 ? KP_IP6_ADDR : KP_IP4_ADDR,
243#elif defined(INET)
244 KP_IP4_ADDR,
245#elif defined(INET6)
246 KP_IP6_ADDR,
247#endif
248 cs);
249 if (!ncs)
250 break;
251 }
252 }
253#endif
254 for (i = 3; i < argc; i++)
255 add_param(NULL, NULL, IP_COMMAND, argv[i]);
256 /* Emulate the defaults from security.jail.* sysctls. */
257 sysvallen = sizeof(sysval);
258 if (sysctlbyname("security.jail.jailed", &sysval, &sysvallen,
259 NULL, 0) == 0 && sysval == 0) {
260 for (pi = 0; pi < sizeof(perm_sysctl) /
261 sizeof(perm_sysctl[0]); pi++) {
262 sysvallen = sizeof(sysval);
263 if (sysctlbyname(perm_sysctl[pi].name,
264 &sysval, &sysvallen, NULL, 0) == 0)
265 add_param(NULL, NULL,
266 perm_sysctl[pi].ipnum,
267 (sysval ? 1 : 0) ^
268 perm_sysctl[pi].rev
269 ? NULL : "false");
270 }
271 sysvallen = sizeof(sysval);
272 if (sysctlbyname("security.jail.enforce_statfs",
273 &sysval, &sysvallen, NULL, 0) == 0) {
274 snprintf(enforce_statfs,
275 sizeof(enforce_statfs), "%d", sysval);
276 add_param(NULL, NULL, KP_ENFORCE_STATFS,
277 enforce_statfs);
278 }
279 }
280 } else if (op == JF_STOP) {
281 /* Jail remove, perhaps using the config file */
282 if (!docf || argc == 0)
283 usage();
284 if (!Rflag)
285 for (i = 0; i < argc; i++)
286 if (strchr(argv[i], '='))
287 usage();
288 if ((docf = !Rflag &&
289 (!strcmp(cfname, "-") || stat(cfname, &st) == 0)))
290 load_config();
291 note_remove = docf || argc > 1 || wild_jail_name(argv[0]);
292 } else if (argc > 1 || (argc == 1 && strchr(argv[0], '='))) {
293 /* Single jail specified on the command line */
294 if (Rflag)
295 usage();
296 docf = 0;
297 for (i = 0; i < argc; i++) {
298 if (!strncmp(argv[i], "command", 7) &&
299 (argv[i][7] == '\0' || argv[i][7] == '=')) {
300 if (argv[i][7] == '=')
301 add_param(NULL, NULL, IP_COMMAND,
302 argv[i] + 8);
303 for (i++; i < argc; i++)
304 add_param(NULL, NULL, IP_COMMAND,
305 argv[i]);
306 break;
307 }
308 add_param(NULL, NULL, 0, argv[i]);
309 }
310 } else {
311 /* From the config file, perhaps with a specified jail */
312 if (Rflag || !docf)
313 usage();
314 load_config();
315 }
316
317 /* Find out which jails will be run. */
318 dep_setup(docf);
319 error = 0;
320 if (op == JF_STOP) {
321 for (i = 0; i < argc; i++)
322 if (start_state(argv[i], docf, op, Rflag) < 0)
323 error = 1;
324 } else {
325 if (start_state(argv[0], docf, op, 0) < 0)
326 exit(1);
327 }
328
329 jfp = NULL;
330 if (JidFile != NULL) {
331 jfp = fopen(JidFile, "w");
332 if (jfp == NULL)
333 err(1, "open %s", JidFile);
334 setlinebuf(jfp);
335 }
336 setlinebuf(stdout);
337
338 /*
339 * The main loop: Get an available jail and perform the required
340 * operation on it. When that is done, the jail may be finished,
341 * or it may go back for the next step.
342 */
343 while ((j = next_jail()))
344 {
345 if (j->flags & JF_FAILED) {
346 error = 1;
347 if (j->comparam == NULL) {
348 dep_done(j, 0);
349 continue;
350 }
351 }
352 if (!(j->flags & JF_PARAMS))
353 {
354 j->flags |= JF_PARAMS;
355 if (dflag)
356 add_param(j, NULL, IP_ALLOW_DYING, NULL);
357 if (check_intparams(j) < 0)
358 continue;
359 if ((j->flags & (JF_START | JF_SET)) &&
360 import_params(j) < 0)
361 continue;
362 }
363 if (!j->jid)
364 running_jid(j,
365 (j->flags & (JF_SET | JF_DEPEND)) == JF_SET
366 ? dflag || bool_param(j->intparams[IP_ALLOW_DYING])
367 : 0);
368 if (finish_command(j))
369 continue;
370
371 switch (j->flags & JF_OP_MASK) {
372 /*
373 * These operations just turn into a different op
374 * depending on the jail's current status.
375 */
376 case JF_START_SET:
377 j->flags = j->jid < 0 ? JF_START : JF_SET;
378 break;
379 case JF_SET_RESTART:
380 if (j->jid < 0) {
381 jail_quoted_warnx(j, "not found",
382 "no jail specified");
383 failed(j);
384 continue;
385 }
386 j->flags = rdtun_params(j, 0) ? JF_RESTART : JF_SET;
387 if (j->flags == JF_RESTART)
388 dep_reset(j);
389 break;
390 case JF_START_SET_RESTART:
391 j->flags = j->jid < 0 ? JF_START
392 : rdtun_params(j, 0) ? JF_RESTART : JF_SET;
393 if (j->flags == JF_RESTART)
394 dep_reset(j);
395 }
396
397 switch (j->flags & JF_OP_MASK) {
398 case JF_START:
399 if (j->comparam == NULL) {
400 if (j->jid > 0 &&
401 !(j->flags & (JF_DEPEND | JF_WILD))) {
402 jail_quoted_warnx(j, "already exists",
403 NULL);
404 failed(j);
405 continue;
406 }
407 if (dep_check(j))
408 continue;
409 if (j->jid > 0)
410 goto jail_create_done;
411 j->comparam = startcommands;
412 j->comstring = NULL;
413 }
414 if (next_command(j))
415 continue;
416 jail_create_done:
417 clear_persist(j);
418 if (iflag)
419 printf("%d\n", j->jid);
420 if (jfp != NULL)
421 print_jail(jfp, j, oldcl);
422 dep_done(j, 0);
423 break;
424
425 case JF_SET:
426 if (j->jid < 0 && !(j->flags & JF_DEPEND)) {
427 jail_quoted_warnx(j, "not found",
428 "no jail specified");
429 failed(j);
430 continue;
431 }
432 if (dep_check(j))
433 continue;
434 if (!(j->flags & JF_DEPEND)) {
435 if (rdtun_params(j, 1) < 0 ||
436 update_jail(j) < 0)
437 continue;
438 if (verbose >= 0 && (j->name || verbose > 0))
439 jail_note(j, "updated\n");
440 }
441 dep_done(j, 0);
442 break;
443
444 case JF_STOP:
445 case JF_RESTART:
446 if (j->comparam == NULL) {
447 if (dep_check(j))
448 continue;
449 if (j->jid < 0) {
450 if (!(j->flags & (JF_DEPEND | JF_WILD))
451 && verbose >= 0)
452 jail_quoted_warnx(j,
453 "not found", NULL);
454 goto jail_remove_done;
455 }
456 j->comparam = stopcommands;
457 j->comstring = NULL;
458 } else if ((j->flags & JF_FAILED) && j->jid > 0)
459 goto jail_remove_done;
460 if (next_command(j))
461 continue;
462 jail_remove_done:
463 dep_done(j, 0);
464 if ((j->flags & (JF_START | JF_FAILED)) == JF_START) {
465 j->comparam = NULL;
466 j->flags &= ~JF_STOP;
467 dep_reset(j);
468 requeue(j, j->ndeps ? &depend : &ready);
469 }
470 break;
471 }
472 }
473
474 if (jfp != NULL)
475 fclose(jfp);
476 exit(error);
477}
478
479/*
480 * Mark a jail's failure for future handling.
481 */
482void
483failed(struct cfjail *j)
484{
485 j->flags |= JF_FAILED;
486 TAILQ_REMOVE(j->queue, j, tq);
487 TAILQ_INSERT_HEAD(&ready, j, tq);
488 j->queue = &ready;
489}
490
491/*
492 * Exit slightly more gracefully when out of memory.
493 */
494void *
495emalloc(size_t size)
496{
497 void *p;
498
499 p = malloc(size);
500 if (!p)
501 err(1, "malloc");
502 return p;
503}
504
505void *
506erealloc(void *ptr, size_t size)
507{
508 void *p;
509
510 p = realloc(ptr, size);
511 if (!p)
512 err(1, "malloc");
513 return p;
514}
515
516char *
517estrdup(const char *str)
518{
519 char *ns;
520
521 ns = strdup(str);
522 if (!ns)
523 err(1, "malloc");
524 return ns;
525}
526
527/*
528 * Print a message including an optional jail name.
529 */
530void
531jail_note(const struct cfjail *j, const char *fmt, ...)
532{
533 va_list ap, tap;
534 char *cs;
535 size_t len;
536
537 va_start(ap, fmt);
538 va_copy(tap, ap);
539 len = vsnprintf(NULL, 0, fmt, tap);
540 va_end(tap);
541 cs = alloca(len + 1);
542 (void)vsnprintf(cs, len + 1, fmt, ap);
543 va_end(ap);
544 if (j->name)
545 printf("%s: %s", j->name, cs);
546 else
547 printf("%s", cs);
548}
549
550/*
551 * Print a warning message including an optional jail name.
552 */
553void
554jail_warnx(const struct cfjail *j, const char *fmt, ...)
555{
556 va_list ap, tap;
557 char *cs;
558 size_t len;
559
560 va_start(ap, fmt);
561 va_copy(tap, ap);
562 len = vsnprintf(NULL, 0, fmt, tap);
563 va_end(tap);
564 cs = alloca(len + 1);
565 (void)vsnprintf(cs, len + 1, fmt, ap);
566 va_end(ap);
567 if (j->name)
568 warnx("%s: %s", j->name, cs);
569 else
570 warnx("%s", cs);
571}
572
573/*
574 * Create a new jail.
575 */
576int
577create_jail(struct cfjail *j)
578{
579 struct iovec jiov[4];
580 struct stat st;
581 struct jailparam *jp, *setparams, *setparams2, *sjp;
582 const char *path;
583 int dopersist, ns, jid, dying, didfail;
584
585 /*
586 * Check the jail's path, with a better error message than jail_set
587 * gives.
588 */
589 if ((path = string_param(j->intparams[KP_PATH]))) {
590 if (j->name != NULL && path[0] != '/') {
591 jail_warnx(j, "path %s: not an absolute pathname",
592 path);
593 return -1;
594 }
595 if (stat(path, &st) < 0) {
596 jail_warnx(j, "path %s: %s", path, strerror(errno));
597 return -1;
598 }
599 if (!S_ISDIR(st.st_mode)) {
600 jail_warnx(j, "path %s: %s", path, strerror(ENOTDIR));
601 return -1;
602 }
603 }
604
605 /*
606 * Copy all the parameters, except that "persist" is always set when
607 * there are commands to run later.
608 */
609 dopersist = !bool_param(j->intparams[KP_PERSIST]) &&
610 (j->intparams[IP_EXEC_START] || j->intparams[IP_COMMAND] ||
611 j->intparams[IP_EXEC_POSTSTART]);
612 sjp = setparams =
613 alloca((j->njp + dopersist) * sizeof(struct jailparam));
614 if (dopersist && jailparam_init(sjp++, "persist") < 0) {
615 jail_warnx(j, "%s", jail_errmsg);
616 return -1;
617 }
618 for (jp = j->jp; jp < j->jp + j->njp; jp++)
619 if (!dopersist || !equalopts(jp->jp_name, "persist"))
620 *sjp++ = *jp;
621 ns = sjp - setparams;
622
623 didfail = 0;
624 j->jid = jailparam_set_note(j, setparams, ns, JAIL_CREATE);
625 if (j->jid < 0 && errno == EEXIST &&
626 bool_param(j->intparams[IP_ALLOW_DYING]) &&
627 int_param(j->intparams[KP_JID], &jid) && jid != 0) {
628 /*
629 * The jail already exists, but may be dying.
630 * Make sure it is, in which case an update is appropriate.
631 */
632 *(const void **)&jiov[0].iov_base = "jid";
633 jiov[0].iov_len = sizeof("jid");
634 jiov[1].iov_base = &jid;
635 jiov[1].iov_len = sizeof(jid);
636 *(const void **)&jiov[2].iov_base = "dying";
637 jiov[2].iov_len = sizeof("dying");
638 jiov[3].iov_base = &dying;
639 jiov[3].iov_len = sizeof(dying);
640 if (jail_get(jiov, 4, JAIL_DYING) < 0) {
641 /*
642 * It could be that the jail just barely finished
643 * dying, or it could be that the jid never existed
644 * but the name does. In either case, another try
645 * at creating the jail should do the right thing.
646 */
647 if (errno == ENOENT)
648 j->jid = jailparam_set_note(j, setparams, ns,
649 JAIL_CREATE);
650 } else if (dying) {
651 j->jid = jid;
652 if (rdtun_params(j, 1) < 0) {
653 j->jid = -1;
654 didfail = 1;
655 } else {
656 sjp = setparams2 = alloca((j->njp + dopersist) *
657 sizeof(struct jailparam));
658 for (jp = setparams; jp < setparams + ns; jp++)
659 if (!JP_RDTUN(jp) ||
660 !strcmp(jp->jp_name, "jid"))
661 *sjp++ = *jp;
662 j->jid = jailparam_set_note(j, setparams2,
663 sjp - setparams2, JAIL_UPDATE | JAIL_DYING);
664 /*
665 * Again, perhaps the jail just finished dying.
666 */
667 if (j->jid < 0 && errno == ENOENT)
668 j->jid = jailparam_set_note(j,
669 setparams, ns, JAIL_CREATE);
670 }
671 }
672 }
673 if (j->jid < 0 && !didfail) {
674 jail_warnx(j, "%s", jail_errmsg);
675 failed(j);
676 }
677 if (dopersist) {
678 jailparam_free(setparams, 1);
679 if (j->jid > 0)
680 j->flags |= JF_PERSIST;
681 }
682 return j->jid;
683}
684
685/*
686 * Remove a temporarily set "persist" parameter.
687 */
688static void
689clear_persist(struct cfjail *j)
690{
691 struct iovec jiov[4];
692 int jid;
693
694 if (!(j->flags & JF_PERSIST))
695 return;
696 j->flags &= ~JF_PERSIST;
697 *(const void **)&jiov[0].iov_base = "jid";
698 jiov[0].iov_len = sizeof("jid");
699 jiov[1].iov_base = &j->jid;
700 jiov[1].iov_len = sizeof(j->jid);
701 *(const void **)&jiov[2].iov_base = "nopersist";
702 jiov[2].iov_len = sizeof("nopersist");
703 jiov[3].iov_base = NULL;
704 jiov[3].iov_len = 0;
705 jid = jail_set(jiov, 4, JAIL_UPDATE);
706 if (verbose > 0)
707 jail_note(j, "jail_set(JAIL_UPDATE) jid=%d nopersist%s%s\n",
708 j->jid, jid < 0 ? ": " : "",
709 jid < 0 ? strerror(errno) : "");
710}
711
712/*
713 * Set a jail's parameters.
714 */
715static int
716update_jail(struct cfjail *j)
717{
718 struct jailparam *jp, *setparams, *sjp;
719 int ns, jid;
720
721 ns = 0;
722 for (jp = j->jp; jp < j->jp + j->njp; jp++)
723 if (!JP_RDTUN(jp))
724 ns++;
725 if (ns == 0)
726 return 0;
727 sjp = setparams = alloca(++ns * sizeof(struct jailparam));
728 if (jailparam_init(sjp, "jid") < 0 ||
729 jailparam_import_raw(sjp, &j->jid, sizeof j->jid) < 0) {
730 jail_warnx(j, "%s", jail_errmsg);
731 failed(j);
732 return -1;
733 }
734 for (jp = j->jp; jp < j->jp + j->njp; jp++)
735 if (!JP_RDTUN(jp))
736 *++sjp = *jp;
737
738 jid = jailparam_set_note(j, setparams, ns,
739 bool_param(j->intparams[IP_ALLOW_DYING])
740 ? JAIL_UPDATE | JAIL_DYING : JAIL_UPDATE);
741 if (jid < 0) {
742 jail_warnx(j, "%s", jail_errmsg);
743 failed(j);
744 }
745 jailparam_free(setparams, 1);
746 return jid;
747}
748
749/*
750 * Return if a jail set would change any create-only parameters.
751 */
752static int
753rdtun_params(struct cfjail *j, int dofail)
754{
755 struct jailparam *jp, *rtparams, *rtjp;
756 int nrt, rval;
757
758 if (j->flags & JF_RDTUN)
759 return 0;
760 j->flags |= JF_RDTUN;
761 nrt = 0;
762 for (jp = j->jp; jp < j->jp + j->njp; jp++)
763 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid"))
764 nrt++;
765 if (nrt == 0)
766 return 0;
767 rtjp = rtparams = alloca(++nrt * sizeof(struct jailparam));
768 if (jailparam_init(rtjp, "jid") < 0 ||
769 jailparam_import_raw(rtjp, &j->jid, sizeof j->jid) < 0) {
770 jail_warnx(j, "%s", jail_errmsg);
771 exit(1);
772 }
773 for (jp = j->jp; jp < j->jp + j->njp; jp++)
774 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid"))
775 *++rtjp = *jp;
776 rval = 0;
777 if (jailparam_get(rtparams, nrt,
778 bool_param(j->intparams[IP_ALLOW_DYING]) ? JAIL_DYING : 0) > 0) {
779 rtjp = rtparams + 1;
780 for (jp = j->jp, rtjp = rtparams + 1; rtjp < rtparams + nrt;
781 jp++) {
782 if (JP_RDTUN(jp) && strcmp(jp->jp_name, "jid")) {
783 if (!((jp->jp_flags & (JP_BOOL | JP_NOBOOL)) &&
784 jp->jp_valuelen == 0 &&
785 *(int *)jp->jp_value) &&
786 !(rtjp->jp_valuelen == jp->jp_valuelen &&
787 !memcmp(rtjp->jp_value, jp->jp_value,
788 jp->jp_valuelen))) {
789 if (dofail) {
790 jail_warnx(j, "%s cannot be "
791 "changed after creation",
792 jp->jp_name);
793 failed(j);
794 rval = -1;
795 } else
796 rval = 1;
797 break;
798 }
799 rtjp++;
800 }
801 }
802 }
803 for (rtjp = rtparams + 1; rtjp < rtparams + nrt; rtjp++)
804 rtjp->jp_name = NULL;
805 jailparam_free(rtparams, nrt);
806 return rval;
807}
808
809/*
810 * Get the jail's jid if it is running.
811 */
812static void
813running_jid(struct cfjail *j, int dflag)
814{
815 struct iovec jiov[2];
816 const char *pval;
817 char *ep;
818 int jid;
819
820 if ((pval = string_param(j->intparams[KP_JID]))) {
821 if (!(jid = strtol(pval, &ep, 10)) || *ep) {
822 j->jid = -1;
823 return;
824 }
825 *(const void **)&jiov[0].iov_base = "jid";
826 jiov[0].iov_len = sizeof("jid");
827 jiov[1].iov_base = &jid;
828 jiov[1].iov_len = sizeof(jid);
829 } else if ((pval = string_param(j->intparams[KP_NAME]))) {
830 *(const void **)&jiov[0].iov_base = "name";
831 jiov[0].iov_len = sizeof("name");
832 jiov[1].iov_len = strlen(pval) + 1;
833 jiov[1].iov_base = alloca(jiov[1].iov_len);
834 strcpy(jiov[1].iov_base, pval);
835 } else {
836 j->jid = -1;
837 return;
838 }
839 j->jid = jail_get(jiov, 2, dflag ? JAIL_DYING : 0);
840}
841
842static void
843jail_quoted_warnx(const struct cfjail *j, const char *name_msg,
844 const char *noname_msg)
845{
846 const char *pval;
847
848 if ((pval = j->name) || (pval = string_param(j->intparams[KP_JID])) ||
849 (pval = string_param(j->intparams[KP_NAME])))
850 warnx("\"%s\" %s", pval, name_msg);
851 else
852 warnx("%s", noname_msg);
853}
854
855/*
856 * Set jail parameters and possible print them out.
857 */
858static int
859jailparam_set_note(const struct cfjail *j, struct jailparam *jp, unsigned njp,
860 int flags)
861{
862 char *value;
863 int jid;
864 unsigned i;
865
866 jid = jailparam_set(jp, njp, flags);
867 if (verbose > 0) {
868 jail_note(j, "jail_set(%s%s)",
869 (flags & (JAIL_CREATE | JAIL_UPDATE)) == JAIL_CREATE
870 ? "JAIL_CREATE" : "JAIL_UPDATE",
871 (flags & JAIL_DYING) ? " | JAIL_DYING" : "");
872 for (i = 0; i < njp; i++) {
873 printf(" %s", jp[i].jp_name);
874 if (jp[i].jp_value == NULL)
875 continue;
876 putchar('=');
877 value = jailparam_export(jp + i);
878 if (value == NULL)
879 err(1, "jailparam_export");
880 quoted_print(stdout, value);
881 free(value);
882 }
883 if (jid < 0)
884 printf(": %s", strerror(errno));
885 printf("\n");
886 }
887 return jid;
888}
889
890/*
891 * Print a jail record.
892 */
893static void
894print_jail(FILE *fp, struct cfjail *j, int oldcl)
895{
896 struct cfparam *p;
897
898 if (oldcl) {
899 fprintf(fp, "%d\t", j->jid);
900 print_param(fp, j->intparams[KP_PATH], ',', 0);
901 putc('\t', fp);
902 print_param(fp, j->intparams[KP_HOST_HOSTNAME], ',', 0);
903 putc('\t', fp);
904#ifdef INET
905 print_param(fp, j->intparams[KP_IP4_ADDR], ',', 0);
906#ifdef INET6
907 if (j->intparams[KP_IP4_ADDR] &&
908 !TAILQ_EMPTY(&j->intparams[KP_IP4_ADDR]->val) &&
909 j->intparams[KP_IP6_ADDR] &&
910 !TAILQ_EMPTY(&j->intparams[KP_IP6_ADDR]->val))
911 putc(',', fp);
912#endif
913#endif
914#ifdef INET6
915 print_param(fp, j->intparams[KP_IP6_ADDR], ',', 0);
916#endif
917 putc('\t', fp);
918 print_param(fp, j->intparams[IP_COMMAND], ' ', 0);
919 } else {
920 fprintf(fp, "jid=%d", j->jid);
921 TAILQ_FOREACH(p, &j->params, tq)
922 if (strcmp(p->name, "jid")) {
923 putc(' ', fp);
924 print_param(fp, p, ',', 1);
925 }
926 }
927 putc('\n', fp);
928}
929
930/*
931 * Print a parameter value, or a name=value pair.
932 */
933static void
934print_param(FILE *fp, const struct cfparam *p, int sep, int doname)
935{
936 const struct cfstring *s, *ts;
937
938 if (doname)
939 fputs(p->name, fp);
940 if (p == NULL || TAILQ_EMPTY(&p->val))
941 return;
942 if (doname)
943 putc('=', fp);
944 TAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
945 quoted_print(fp, s->s);
946 if (ts != NULL)
947 putc(sep, fp);
948 }
949}
950
951/*
952 * Print a string with quotes around spaces.
953 */
954static void
955quoted_print(FILE *fp, char *str)
956{
957 int c, qc;
958 char *p = str;
959
960 qc = !*p ? '"'
961 : strchr(p, '\'') ? '"'
962 : strchr(p, '"') ? '\''
963 : strchr(p, ' ') || strchr(p, '\t') ? '"'
964 : 0;
965 if (qc)
966 putc(qc, fp);
967 while ((c = *p++)) {
968 if (c == '\\' || c == qc)
969 putc('\\', fp);
970 putc(c, fp);
971 }
972 if (qc)
973 putc(qc, fp);
974}
975
976static void
977usage(void)
978{
979
980 (void)fprintf(stderr,
981 "usage: jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n"
982 " -[cmr] param=value ... [command=command ...]\n"
983 " jail [-dqv] [-f file] -[cmr] [jail]\n"
984 " jail [-qv] [-f file] -[rR] ['*' | jail ...]\n"
985 " jail [-dhilqv] [-J jid_file] [-u username] [-U username]\n"
986 " [-n jailname] [-s securelevel]\n"
987 " path hostname [ip[,...]] command ...\n");
988 exit(1);
989}
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