2 * Copyright (c) 2011 James Gritton
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
31 #include <sys/event.h>
32 #include <sys/mount.h>
34 #include <sys/sysctl.h>
42 #include <login_cap.h>
54 #define DEFAULT_STOP_TIMEOUT 10
55 #define PHASH_SIZE 256
57 LIST_HEAD(phhead, phash);
67 extern char **environ;
69 static int run_command(struct cfjail *j);
70 static int add_proc(struct cfjail *j, pid_t pid);
71 static void clear_procs(struct cfjail *j);
72 static struct cfjail *find_proc(pid_t pid);
73 static int term_procs(struct cfjail *j);
74 static int get_user_info(struct cfjail *j, const char *username,
75 const struct passwd **pwdp, login_cap_t **lcapp);
76 static int check_path(struct cfjail *j, const char *pname, const char *path,
77 int isfile, const char *umount_type);
79 static struct cfjails sleeping = TAILQ_HEAD_INITIALIZER(sleeping);
80 static struct cfjails runnable = TAILQ_HEAD_INITIALIZER(runnable);
81 static struct cfstring dummystring = { .len = 1 };
82 static struct phhead phash[PHASH_SIZE];
86 * Run the next command associated with a jail.
89 next_command(struct cfjail *j)
91 enum intparam comparam;
92 int create_failed, stopping;
95 if (j->flags & JF_FROM_RUNQ)
96 requeue_head(j, &runnable);
98 requeue(j, &runnable);
101 j->flags &= ~JF_FROM_RUNQ;
102 create_failed = (j->flags & (JF_STOP | JF_FAILED)) == JF_FAILED;
103 stopping = (j->flags & JF_STOP) != 0;
104 comparam = *j->comparam;
106 if (j->comstring == NULL) {
107 j->comparam += create_failed ? -1 : 1;
108 switch ((comparam = *j->comparam)) {
112 if (!bool_param(j->intparams[IP_MOUNT_DEVFS]))
114 j->comstring = &dummystring;
116 case IP_MOUNT_FDESCFS:
117 if (!bool_param(j->intparams[IP_MOUNT_FDESCFS]))
119 j->comstring = &dummystring;
121 case IP_MOUNT_PROCFS:
122 if (!bool_param(j->intparams[IP_MOUNT_PROCFS]))
124 j->comstring = &dummystring;
127 case IP_STOP_TIMEOUT:
128 j->comstring = &dummystring;
131 if (j->intparams[comparam] == NULL)
133 j->comstring = create_failed || (stopping &&
134 (j->intparams[comparam]->flags & PF_REV))
135 ? TAILQ_LAST(&j->intparams[comparam]->val,
137 : TAILQ_FIRST(&j->intparams[comparam]->val);
140 j->comstring = j->comstring == &dummystring ? NULL :
141 create_failed || (stopping &&
142 (j->intparams[comparam]->flags & PF_REV))
143 ? TAILQ_PREV(j->comstring, cfstrings, tq)
144 : TAILQ_NEXT(j->comstring, tq);
146 if (j->comstring == NULL || j->comstring->len == 0 ||
147 (create_failed && (comparam == IP_EXEC_PRESTART ||
148 comparam == IP_EXEC_START || comparam == IP_COMMAND ||
149 comparam == IP_EXEC_POSTSTART)))
151 switch (run_command(j)) {
162 * Check command exit status
165 finish_command(struct cfjail *j)
170 if (!(j->flags & JF_SLEEPQ))
172 j->flags &= ~JF_SLEEPQ;
173 if (*j->comparam == IP_STOP_TIMEOUT) {
174 j->flags &= ~JF_TIMEOUT;
179 if (!TAILQ_EMPTY(&runnable)) {
180 rj = TAILQ_FIRST(&runnable);
181 rj->flags |= JF_FROM_RUNQ;
185 if (j->flags & JF_TIMEOUT) {
186 j->flags &= ~JF_TIMEOUT;
187 if (*j->comparam != IP_STOP_TIMEOUT) {
188 jail_warnx(j, "%s: timed out", j->comline);
191 } else if (verbose > 0)
192 jail_note(j, "timed out\n");
193 } else if (j->pstatus != 0) {
194 if (WIFSIGNALED(j->pstatus))
195 jail_warnx(j, "%s: exited on signal %d",
196 j->comline, WTERMSIG(j->pstatus));
198 jail_warnx(j, "%s: failed", j->comline);
209 * Check for finished processes or timeouts.
212 next_proc(int nonblock)
216 struct timespec *tsp;
219 if (!TAILQ_EMPTY(&sleeping)) {
222 if ((j = TAILQ_FIRST(&sleeping)) && j->timeout.tv_sec) {
223 clock_gettime(CLOCK_REALTIME, &ts);
224 ts.tv_sec = j->timeout.tv_sec - ts.tv_sec;
225 ts.tv_nsec = j->timeout.tv_nsec - ts.tv_nsec;
226 if (ts.tv_nsec < 0) {
228 ts.tv_nsec += 1000000000;
231 (ts.tv_sec == 0 && ts.tv_nsec == 0)) {
232 j->flags |= JF_TIMEOUT;
243 switch (kevent(kq, NULL, 0, &ke, 1, tsp)) {
250 j = TAILQ_FIRST(&sleeping);
251 j->flags |= JF_TIMEOUT;
257 (void)waitpid(ke.ident, NULL, WNOHANG);
258 if ((j = find_proc(ke.ident))) {
259 j->pstatus = ke.data;
269 * Run a single command for a jail, possibly inside the jail.
272 run_command(struct cfjail *j)
274 const struct passwd *pwd;
275 const struct cfstring *comstring, *s;
278 char *cs, *comcs, *devpath;
279 const char *jidstr, *conslog, *path, *ruleset, *term, *username;
280 enum intparam comparam;
283 int argc, bg, clean, consfd, down, fib, i, injail, sjuser, timeout;
284 #if defined(INET) || defined(INET6)
285 char *addr, *extrap, *p, *val;
288 static char *cleanenv;
290 /* Perform some operations that aren't actually commands */
291 comparam = *j->comparam;
292 down = j->flags & (JF_STOP | JF_FAILED);
294 case IP_STOP_TIMEOUT:
295 return term_procs(j);
299 if (jail_remove(j->jid) < 0 && errno == EPERM) {
300 jail_warnx(j, "jail_remove: %s",
304 if (verbose > 0 || (verbose == 0 && (j->flags & JF_STOP
305 ? note_remove : j->name != NULL)))
306 jail_note(j, "removed\n");
308 if (j->flags & JF_STOP)
309 dep_done(j, DF_LIGHT);
311 j->flags &= ~JF_PERSIST;
313 if (create_jail(j) < 0)
316 printf("%d\n", j->jid);
317 if (verbose >= 0 && (j->name || verbose > 0))
318 jail_note(j, "created\n");
319 dep_done(j, DF_LIGHT);
326 * Collect exec arguments. Internal commands for network and
327 * mounting build their own argument lists.
329 comstring = j->comstring;
335 val = alloca(strlen(comstring->s) + 1);
336 strcpy(val, comstring->s);
339 while ((p = strchr(cs, ' ')) != NULL && strlen(p) > 1) {
340 if (extrap == NULL) {
348 argv = alloca((8 + argc) * sizeof(char *));
349 *(const char **)&argv[0] = _PATH_IFCONFIG;
350 if ((cs = strchr(val, '|'))) {
351 argv[1] = alloca(cs - val + 1);
352 strlcpy(argv[1], val, cs - val + 1);
355 *(const char **)&argv[1] =
356 string_param(j->intparams[IP_INTERFACE]);
359 *(const char **)&argv[2] = "inet";
360 if (!(cs = strchr(addr, '/'))) {
362 *(const char **)&argv[4] = "netmask";
363 *(const char **)&argv[5] = "255.255.255.255";
365 } else if (strchr(cs + 1, '.')) {
366 argv[3] = alloca(cs - addr + 1);
367 strlcpy(argv[3], addr, cs - addr + 1);
368 *(const char **)&argv[4] = "netmask";
369 *(const char **)&argv[5] = cs + 1;
377 for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) {
378 size_t len = strlen(cs) + 1;
379 argv[argc] = alloca(len);
380 strlcpy(argv[argc++], cs, len);
384 *(const char **)&argv[argc] = down ? "-alias" : "alias";
385 argv[argc + 1] = NULL;
392 val = alloca(strlen(comstring->s) + 1);
393 strcpy(val, comstring->s);
396 while ((p = strchr(cs, ' ')) != NULL && strlen(p) > 1) {
397 if (extrap == NULL) {
405 argv = alloca((8 + argc) * sizeof(char *));
406 *(const char **)&argv[0] = _PATH_IFCONFIG;
407 if ((cs = strchr(val, '|'))) {
408 argv[1] = alloca(cs - val + 1);
409 strlcpy(argv[1], val, cs - val + 1);
412 *(const char **)&argv[1] =
413 string_param(j->intparams[IP_INTERFACE]);
416 *(const char **)&argv[2] = "inet6";
418 if (!(cs = strchr(addr, '/'))) {
419 *(const char **)&argv[4] = "prefixlen";
420 *(const char **)&argv[5] = "128";
426 for (cs = strtok(extrap, " "); cs; cs = strtok(NULL, " ")) {
427 size_t len = strlen(cs) + 1;
428 argv[argc] = alloca(len);
429 strlcpy(argv[argc++], cs, len);
433 *(const char **)&argv[argc] = down ? "-alias" : "alias";
434 argv[argc + 1] = NULL;
438 case IP_VNET_INTERFACE:
439 argv = alloca(5 * sizeof(char *));
440 *(const char **)&argv[0] = _PATH_IFCONFIG;
441 argv[1] = comstring->s;
442 *(const char **)&argv[2] = down ? "-vnet" : "vnet";
443 jidstr = string_param(j->intparams[KP_JID]);
444 *(const char **)&argv[3] =
445 jidstr ? jidstr : string_param(j->intparams[KP_NAME]);
450 case IP__MOUNT_FROM_FSTAB:
451 argv = alloca(8 * sizeof(char *));
452 comcs = alloca(comstring->len + 1);
453 strcpy(comcs, comstring->s);
455 for (cs = strtok(comcs, " \t\f\v\r\n"); cs && argc < 4;
456 cs = strtok(NULL, " \t\f\v\r\n")) {
457 if (argc <= 1 && strunvis(cs, cs) < 0) {
458 jail_warnx(j, "%s: %s: fstab parse error",
459 j->intparams[comparam]->name, comstring->s);
467 jail_warnx(j, "%s: %s: missing information",
468 j->intparams[comparam]->name, comstring->s);
471 if (check_path(j, j->intparams[comparam]->name, argv[1], 0,
472 down ? argv[2] : NULL) < 0)
477 *(const char **)&argv[0] = "/sbin/umount";
484 *(const char **)&argv[3] = "-o";
490 *(const char **)&argv[0] = _PATH_MOUNT;
492 *(const char **)&argv[1] = "-t";
496 argv = alloca(7 * sizeof(char *));
497 path = string_param(j->intparams[KP_PATH]);
499 jail_warnx(j, "mount.devfs: no path");
502 devpath = alloca(strlen(path) + 5);
503 sprintf(devpath, "%s/dev", path);
504 if (check_path(j, "mount.devfs", devpath, 0,
505 down ? "devfs" : NULL) < 0)
508 *(const char **)&argv[0] = "/sbin/umount";
512 *(const char **)&argv[0] = _PATH_MOUNT;
513 *(const char **)&argv[1] = "-t";
514 *(const char **)&argv[2] = "devfs";
515 ruleset = string_param(j->intparams[KP_DEVFS_RULESET]);
517 ruleset = "4"; /* devfsrules_jail */
518 argv[3] = alloca(11 + strlen(ruleset));
519 sprintf(argv[3], "-oruleset=%s", ruleset);
520 *(const char **)&argv[4] = ".";
526 case IP_MOUNT_FDESCFS:
527 argv = alloca(7 * sizeof(char *));
528 path = string_param(j->intparams[KP_PATH]);
530 jail_warnx(j, "mount.fdescfs: no path");
533 devpath = alloca(strlen(path) + 8);
534 sprintf(devpath, "%s/dev/fd", path);
535 if (check_path(j, "mount.fdescfs", devpath, 0,
536 down ? "fdescfs" : NULL) < 0)
539 *(const char **)&argv[0] = "/sbin/umount";
543 *(const char **)&argv[0] = _PATH_MOUNT;
544 *(const char **)&argv[1] = "-t";
545 *(const char **)&argv[2] = "fdescfs";
546 *(const char **)&argv[3] = ".";
552 case IP_MOUNT_PROCFS:
553 argv = alloca(7 * sizeof(char *));
554 path = string_param(j->intparams[KP_PATH]);
556 jail_warnx(j, "mount.procfs: no path");
559 devpath = alloca(strlen(path) + 6);
560 sprintf(devpath, "%s/proc", path);
561 if (check_path(j, "mount.procfs", devpath, 0,
562 down ? "procfs" : NULL) < 0)
565 *(const char **)&argv[0] = "/sbin/umount";
569 *(const char **)&argv[0] = _PATH_MOUNT;
570 *(const char **)&argv[1] = "-t";
571 *(const char **)&argv[2] = "procfs";
572 *(const char **)&argv[3] = ".";
580 goto default_command;
582 TAILQ_FOREACH(s, &j->intparams[IP_COMMAND]->val, tq)
584 argv = alloca((argc + 1) * sizeof(char *));
586 TAILQ_FOREACH(s, &j->intparams[IP_COMMAND]->val, tq)
589 j->comstring = &dummystring;
594 if ((cs = strpbrk(comstring->s, "!\"$&'()*;<>?[\\]`{|}~")) &&
595 !(cs[0] == '&' && cs[1] == '\0')) {
596 argv = alloca(4 * sizeof(char *));
597 *(const char **)&argv[0] = _PATH_BSHELL;
598 *(const char **)&argv[1] = "-c";
599 argv[2] = comstring->s;
606 comcs = alloca(comstring->len + 1);
607 strcpy(comcs, comstring->s);
609 for (cs = strtok(comcs, " \t\f\v\r\n"); cs;
610 cs = strtok(NULL, " \t\f\v\r\n"))
612 argv = alloca((argc + 1) * sizeof(char *));
613 strcpy(comcs, comstring->s);
615 for (cs = strtok(comcs, " \t\f\v\r\n"); cs;
616 cs = strtok(NULL, " \t\f\v\r\n"))
624 if (int_param(j->intparams[IP_EXEC_TIMEOUT], &timeout) &&
626 clock_gettime(CLOCK_REALTIME, &j->timeout);
627 j->timeout.tv_sec += timeout;
629 j->timeout.tv_sec = 0;
631 injail = comparam == IP_EXEC_START || comparam == IP_COMMAND ||
632 comparam == IP_EXEC_STOP;
633 clean = bool_param(j->intparams[IP_EXEC_CLEAN]);
634 username = string_param(j->intparams[injail
635 ? IP_EXEC_JAIL_USER : IP_EXEC_SYSTEM_USER]);
636 sjuser = bool_param(j->intparams[IP_EXEC_SYSTEM_JAIL_USER]);
640 (conslog = string_param(j->intparams[IP_EXEC_CONSOLELOG]))) {
641 if (check_path(j, "exec.consolelog", conslog, 1, NULL) < 0)
644 open(conslog, O_WRONLY | O_CREAT | O_APPEND, DEFFILEMODE);
646 jail_warnx(j, "open %s: %s", conslog, strerror(errno));
652 for (i = 0; argv[i]; i++)
653 comlen += strlen(argv[i]) + 1;
654 j->comline = cs = emalloc(comlen);
655 for (i = 0; argv[i]; i++) {
658 cs += strlen(argv[i]) + 1;
663 jail_note(j, "run command%s%s%s: %s\n",
664 injail ? " in jail" : "", username ? " as " : "",
665 username ? username : "", j->comline);
671 if (bg || !add_proc(j, pid)) {
683 /* Set up the environment and run the command */
686 if ((clean || username) && injail && sjuser &&
687 get_user_info(j, username, &pwd, &lcap) < 0)
690 /* jail_attach won't chdir along with its chroot. */
691 path = string_param(j->intparams[KP_PATH]);
692 if (path && chdir(path) < 0) {
693 jail_warnx(j, "chdir %s: %s", path, strerror(errno));
696 if (int_param(j->intparams[IP_EXEC_FIB], &fib) &&
698 jail_warnx(j, "setfib: %s", strerror(errno));
701 if (jail_attach(j->jid) < 0) {
702 jail_warnx(j, "jail_attach: %s", strerror(errno));
706 if (clean || username) {
707 if (!(injail && sjuser) &&
708 get_user_info(j, username, &pwd, &lcap) < 0)
711 term = getenv("TERM");
713 setenv("PATH", "/bin:/usr/bin", 0);
715 setenv("TERM", term, 1);
717 if (setgid(pwd->pw_gid) < 0) {
718 jail_warnx(j, "setgid %d: %s", pwd->pw_gid,
722 if (setusercontext(lcap, pwd, pwd->pw_uid, username
723 ? LOGIN_SETALL & ~LOGIN_SETGROUP & ~LOGIN_SETLOGIN
724 : LOGIN_SETPATH | LOGIN_SETENV) < 0) {
725 jail_warnx(j, "setusercontext %s: %s", pwd->pw_name,
730 setenv("USER", pwd->pw_name, 1);
731 setenv("HOME", pwd->pw_dir, 1);
733 *pwd->pw_shell ? pwd->pw_shell : _PATH_BSHELL, 1);
734 if (clean && chdir(pwd->pw_dir) < 0) {
735 jail_warnx(j, "chdir %s: %s",
736 pwd->pw_dir, strerror(errno));
742 if (consfd != 0 && (dup2(consfd, 1) < 0 || dup2(consfd, 2) < 0)) {
743 jail_warnx(j, "exec.consolelog: %s", strerror(errno));
747 execvp(argv[0], argv);
748 jail_warnx(j, "exec %s: %s", argv[0], strerror(errno));
753 * Add a process to the hash, tied to a jail.
756 add_proc(struct cfjail *j, pid_t pid)
762 if (!kq && (kq = kqueue()) < 0)
764 EV_SET(&ke, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
765 if (kevent(kq, &ke, 1, NULL, 0, NULL) < 0) {
770 ph = emalloc(sizeof(struct phash));
773 LIST_INSERT_HEAD(&phash[pid % PHASH_SIZE], ph, le);
775 j->flags |= JF_SLEEPQ;
776 if (j->timeout.tv_sec == 0)
777 requeue(j, &sleeping);
779 /* File the jail in the sleep queue according to its timeout. */
780 TAILQ_REMOVE(j->queue, j, tq);
781 TAILQ_FOREACH(tj, &sleeping, tq) {
782 if (!tj->timeout.tv_sec ||
783 j->timeout.tv_sec < tj->timeout.tv_sec ||
784 (j->timeout.tv_sec == tj->timeout.tv_sec &&
785 j->timeout.tv_nsec <= tj->timeout.tv_nsec)) {
786 TAILQ_INSERT_BEFORE(tj, j, tq);
791 TAILQ_INSERT_TAIL(&sleeping, j, tq);
792 j->queue = &sleeping;
798 * Remove any processes from the hash that correspond to a jail.
801 clear_procs(struct cfjail *j)
804 struct phash *ph, *tph;
808 for (i = 0; i < PHASH_SIZE; i++)
809 LIST_FOREACH_SAFE(ph, &phash[i], le, tph)
811 EV_SET(&ke, ph->pid, EVFILT_PROC, EV_DELETE,
813 (void)kevent(kq, &ke, 1, NULL, 0, NULL);
820 * Find the jail that corresponds to an exited process.
822 static struct cfjail *
828 LIST_FOREACH(ph, &phash[pid % PHASH_SIZE], le)
829 if (ph->pid == pid) {
833 return --j->nprocs ? NULL : j;
839 * Send SIGTERM to all processes in a jail and wait for them to die.
842 term_procs(struct cfjail *j)
844 struct kinfo_proc *ki;
845 int i, noted, pcnt, timeout;
849 if (!int_param(j->intparams[IP_STOP_TIMEOUT], &timeout))
850 timeout = DEFAULT_STOP_TIMEOUT;
851 else if (timeout == 0)
855 kd = kvm_open(NULL, NULL, NULL, O_RDONLY, NULL);
860 ki = kvm_getprocs(kd, KERN_PROC_PROC, 0, &pcnt);
864 for (i = 0; i < pcnt; i++)
865 if (ki[i].ki_jid == j->jid &&
866 kill(ki[i].ki_pid, SIGTERM) == 0) {
867 (void)add_proc(j, ki[i].ki_pid);
871 jail_note(j, "sent SIGTERM to:");
873 printf(" %d", ki[i].ki_pid);
879 clock_gettime(CLOCK_REALTIME, &j->timeout);
880 j->timeout.tv_sec += timeout;
887 * Look up a user in the passwd and login.conf files.
890 get_user_info(struct cfjail *j, const char *username,
891 const struct passwd **pwdp, login_cap_t **lcapp)
893 const struct passwd *pwd;
896 *pwdp = pwd = username ? getpwnam(username) : getpwuid(getuid());
899 jail_warnx(j, "getpwnam%s%s: %s", username ? " " : "",
900 username ? username : "", strerror(errno));
902 jail_warnx(j, "%s: no such user", username);
904 jail_warnx(j, "unknown uid %d", getuid());
907 *lcapp = login_getpwclass(pwd);
908 if (*lcapp == NULL) {
909 jail_warnx(j, "getpwclass %s: %s", pwd->pw_name,
913 /* Set the groups while the group file is still available */
914 if (initgroups(pwd->pw_name, pwd->pw_gid) < 0) {
915 jail_warnx(j, "initgroups %s: %s", pwd->pw_name,
923 * Make sure a mount or consolelog path is a valid absolute pathname
927 check_path(struct cfjail *j, const char *pname, const char *path, int isfile,
928 const char *umount_type)
930 struct stat st, mpst;
933 const char *jailpath;
936 if (path[0] != '/') {
937 jail_warnx(j, "%s: %s: not an absolute pathname",
942 * Only check for symlinks in components below the jail's path,
943 * since that's where the security risk lies.
945 jailpath = string_param(j->intparams[KP_PATH]);
946 if (jailpath == NULL)
948 jplen = strlen(jailpath);
949 if (!strncmp(path, jailpath, jplen) && path[jplen] == '/') {
950 tpath = alloca(strlen(path) + 1);
952 for (p = tpath + jplen; p != NULL; ) {
953 p = strchr(p + 1, '/');
956 if (lstat(tpath, &st) < 0) {
957 if (errno == ENOENT && isfile && !p)
959 jail_warnx(j, "%s: %s: %s", pname, tpath,
963 if (S_ISLNK(st.st_mode)) {
964 jail_warnx(j, "%s: %s is a symbolic link",
972 if (umount_type != NULL) {
973 if (stat(path, &st) < 0 || statfs(path, &stfs) < 0) {
974 jail_warnx(j, "%s: %s: %s", pname, path,
978 if (stat(stfs.f_mntonname, &mpst) < 0) {
979 jail_warnx(j, "%s: %s: %s", pname, stfs.f_mntonname,
983 if (st.st_ino != mpst.st_ino) {
984 jail_warnx(j, "%s: %s: not a mount point",
988 if (strcmp(stfs.f_fstypename, umount_type)) {
989 jail_warnx(j, "%s: %s: not a %s mount",
990 pname, path, umount_type);