2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
11 * Copyright (c) 2006 Victor Balada Diaz <victor@bsdes.net>
12 * All rights reserved.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * $FreeBSD: src/sys/kern/kern_jail.c,v 1.6.2.3 2001/08/17 01:00:26 rwatson Exp $
39 * $DragonFly: src/sys/kern/kern_jail.c,v 1.19 2008/05/17 18:20:33 dillon Exp $
42 #include "opt_inet6.h"
44 #include <sys/param.h>
45 #include <sys/types.h>
46 #include <sys/kernel.h>
47 #include <sys/systm.h>
48 #include <sys/errno.h>
49 #include <sys/sysproto.h>
50 #include <sys/malloc.h>
51 #include <sys/nlookup.h>
52 #include <sys/namecache.h>
56 #include <sys/socket.h>
57 #include <sys/sysctl.h>
58 #include <sys/kern_syscall.h>
60 #include <netinet/in.h>
61 #include <netinet6/in6_var.h>
63 static struct prison *prison_find(int);
64 static void prison_ipcache_init(struct prison *);
66 MALLOC_DEFINE(M_PRISON, "prison", "Prison structures");
68 SYSCTL_NODE(, OID_AUTO, jail, CTLFLAG_RW, 0,
69 "All jails settings");
71 SYSCTL_NODE(_jail, OID_AUTO, defaults, CTLFLAG_RW, 0,
72 "Default options for jails");
74 int jail_set_hostname_allowed = 1;
75 SYSCTL_INT(_jail_defaults, OID_AUTO, set_hostname_allowed, CTLFLAG_RW,
76 &jail_set_hostname_allowed, 0,
77 "Processes in jail can set their hostnames");
79 int jail_socket_unixiproute_only = 1;
80 SYSCTL_INT(_jail_defaults, OID_AUTO, socket_unixiproute_only, CTLFLAG_RW,
81 &jail_socket_unixiproute_only, 0,
82 "Processes in jail are limited to creating UNIX/IPv[46]/route sockets only");
84 int jail_sysvipc_allowed = 0;
85 SYSCTL_INT(_jail_defaults, OID_AUTO, sysvipc_allowed, CTLFLAG_RW,
86 &jail_sysvipc_allowed, 0,
87 "Processes in jail can use System V IPC primitives");
89 int jail_chflags_allowed = 0;
90 SYSCTL_INT(_jail_defaults, OID_AUTO, chflags_allowed, CTLFLAG_RW,
91 &jail_chflags_allowed, 0,
92 "Processes in jail can alter system file flags");
94 int jail_allow_raw_sockets = 0;
95 SYSCTL_INT(_jail_defaults, OID_AUTO, allow_raw_sockets, CTLFLAG_RW,
96 &jail_allow_raw_sockets, 0,
97 "Process in jail can create raw sockets");
102 static struct lock jail_lock =
103 LOCK_INITIALIZER("jail", 0, LK_CANRECURSE);
105 LIST_HEAD(prisonlist, prison);
106 struct prisonlist allprison = LIST_HEAD_INITIALIZER(&allprison);
109 kern_jail_attach(int jid)
111 struct proc *p = curthread->td_proc;
116 pr = prison_find(jid);
120 error = kern_chroot(&pr->pr_root);
125 lwkt_gettoken(&p->p_token);
128 p->p_flags |= P_JAILED;
129 lwkt_reltoken(&p->p_token);
135 assign_prison_id(struct prison *pr)
140 tryprid = lastprid + 1;
141 if (tryprid == JAIL_MAX)
144 lockmgr(&jail_lock, LK_EXCLUSIVE);
146 LIST_FOREACH(tpr, &allprison, pr_list) {
147 if (tpr->pr_id != tryprid)
150 if (tryprid == JAIL_MAX) {
151 lockmgr(&jail_lock, LK_RELEASE);
156 pr->pr_id = lastprid = tryprid;
157 lockmgr(&jail_lock, LK_RELEASE);
163 kern_jail(struct prison *pr, struct jail *j)
166 struct nlookupdata nd;
168 error = nlookup_init(&nd, j->path, UIO_USERSPACE, NLC_FOLLOW);
173 error = nlookup(&nd);
178 cache_copy(&nd.nl_nch, &pr->pr_root);
180 varsymset_init(&pr->pr_varsymset, NULL);
181 prison_ipcache_init(pr);
183 error = assign_prison_id(pr);
185 varsymset_clean(&pr->pr_varsymset);
190 lockmgr(&jail_lock, LK_EXCLUSIVE);
191 LIST_INSERT_HEAD(&allprison, pr, pr_list);
193 lockmgr(&jail_lock, LK_RELEASE);
195 error = prison_sysctl_create(pr);
199 error = kern_jail_attach(pr->pr_id);
207 prison_sysctl_done(pr);
210 lockmgr(&jail_lock, LK_EXCLUSIVE);
211 LIST_REMOVE(pr, pr_list);
213 lockmgr(&jail_lock, LK_RELEASE);
214 varsymset_clean(&pr->pr_varsymset);
222 * jail_args(syscallarg(struct jail *) jail)
227 sys_jail(struct jail_args *uap)
229 struct thread *td = curthread;
231 struct jail_ip_storage *jip;
236 uap->sysmsg_result = -1;
238 error = priv_check(td, PRIV_JAIL_CREATE);
242 error = copyin(uap->jail, &jversion, sizeof(jversion));
246 pr = kmalloc(sizeof(*pr), M_PRISON, M_WAITOK | M_ZERO);
247 SLIST_INIT(&pr->pr_ips);
248 lockmgr(&jail_lock, LK_EXCLUSIVE);
252 /* Single IPv4 jails. */
255 struct sockaddr_in ip4addr;
257 error = copyin(uap->jail, &jv0, sizeof(jv0));
262 j.hostname = jv0.hostname;
264 jip = kmalloc(sizeof(*jip), M_PRISON, M_WAITOK | M_ZERO);
265 ip4addr.sin_family = AF_INET;
266 ip4addr.sin_addr.s_addr = htonl(jv0.ip_number);
267 memcpy(&jip->ip, &ip4addr, sizeof(ip4addr));
268 SLIST_INSERT_HEAD(&pr->pr_ips, jip, entries);
274 * DragonFly multi noIP/IPv4/IPv6 jails
276 * NOTE: This version is unsupported by FreeBSD
277 * (which uses version 2 instead).
280 error = copyin(uap->jail, &j, sizeof(j));
284 for (int i = 0; i < j.n_ips; i++) {
285 jip = kmalloc(sizeof(*jip), M_PRISON,
287 SLIST_INSERT_HEAD(&pr->pr_ips, jip, entries);
288 error = copyin(&j.ips[i], &jip->ip,
289 sizeof(struct sockaddr_storage));
299 error = copyinstr(j.hostname, &pr->pr_host, sizeof(pr->pr_host), 0);
303 /* Global settings are the default for all jails */
304 pr->pr_set_hostname_allowed = jail_set_hostname_allowed;
305 pr->pr_socket_unixiproute_only = jail_socket_unixiproute_only;
306 pr->pr_sysvipc_allowed = jail_sysvipc_allowed;
307 pr->pr_chflags_allowed = jail_chflags_allowed;
308 pr->pr_allow_raw_sockets = jail_allow_raw_sockets;
310 error = kern_jail(pr, &j);
314 uap->sysmsg_result = pr->pr_id;
315 lockmgr(&jail_lock, LK_RELEASE);
321 while (!SLIST_EMPTY(&pr->pr_ips)) {
322 jip = SLIST_FIRST(&pr->pr_ips);
323 SLIST_REMOVE_HEAD(&pr->pr_ips, entries);
324 kfree(jip, M_PRISON);
326 lockmgr(&jail_lock, LK_RELEASE);
333 * int jail_attach(int jid);
338 sys_jail_attach(struct jail_attach_args *uap)
340 struct thread *td = curthread;
343 error = priv_check(td, PRIV_JAIL_ATTACH);
346 lockmgr(&jail_lock, LK_EXCLUSIVE);
347 error = kern_jail_attach(uap->jid);
348 lockmgr(&jail_lock, LK_RELEASE);
353 prison_ipcache_init(struct prison *pr)
355 struct jail_ip_storage *jis;
356 struct sockaddr_in *ip4;
357 struct sockaddr_in6 *ip6;
359 lockmgr(&jail_lock, LK_EXCLUSIVE);
360 SLIST_FOREACH(jis, &pr->pr_ips, entries) {
361 switch (jis->ip.ss_family) {
363 ip4 = (struct sockaddr_in *)&jis->ip;
364 if ((ntohl(ip4->sin_addr.s_addr) >> IN_CLASSA_NSHIFT) ==
366 /* loopback address */
367 if (pr->local_ip4 == NULL)
371 if (pr->nonlocal_ip4 == NULL)
372 pr->nonlocal_ip4 = ip4;
377 ip6 = (struct sockaddr_in6 *)&jis->ip;
378 if (IN6_IS_ADDR_LOOPBACK(&ip6->sin6_addr)) {
379 /* loopback address */
380 if (pr->local_ip6 == NULL)
384 if (pr->nonlocal_ip6 == NULL)
385 pr->nonlocal_ip6 = ip6;
390 lockmgr(&jail_lock, LK_RELEASE);
394 * Changes INADDR_LOOPBACK for a valid jail address.
395 * ip is in network byte order.
396 * Returns 1 if the ip is among jail valid ips.
397 * Returns 0 if is not among jail valid ips or
398 * if couldn't replace INADDR_LOOPBACK for a valid
402 prison_replace_wildcards(struct thread *td, struct sockaddr *ip)
404 struct sockaddr_in *ip4 = (struct sockaddr_in *)ip;
405 struct sockaddr_in6 *ip6 = (struct sockaddr_in6 *)ip;
408 if (td->td_proc == NULL || td->td_ucred == NULL)
410 if ((pr = td->td_ucred->cr_prison) == NULL)
413 if ((ip->sa_family == AF_INET &&
414 ip4->sin_addr.s_addr == htonl(INADDR_ANY)) ||
415 (ip->sa_family == AF_INET6 &&
416 IN6_IS_ADDR_UNSPECIFIED(&ip6->sin6_addr)))
418 if ((ip->sa_family == AF_INET &&
419 ip4->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) ||
420 (ip->sa_family == AF_INET6 &&
421 IN6_IS_ADDR_LOOPBACK(&ip6->sin6_addr))) {
422 if (!prison_get_local(pr, ip->sa_family, ip) &&
423 !prison_get_nonlocal(pr, ip->sa_family, ip))
428 if (jailed_ip(pr, ip))
434 prison_remote_ip(struct thread *td, struct sockaddr *ip)
436 struct sockaddr_in *ip4 = (struct sockaddr_in *)ip;
437 struct sockaddr_in6 *ip6 = (struct sockaddr_in6 *)ip;
440 if (td == NULL || td->td_proc == NULL || td->td_ucred == NULL)
442 if ((pr = td->td_ucred->cr_prison) == NULL)
444 if ((ip->sa_family == AF_INET &&
445 ip4->sin_addr.s_addr == htonl(INADDR_LOOPBACK)) ||
446 (ip->sa_family == AF_INET6 &&
447 IN6_IS_ADDR_LOOPBACK(&ip6->sin6_addr))) {
448 if (!prison_get_local(pr, ip->sa_family, ip) &&
449 !prison_get_nonlocal(pr, ip->sa_family, ip))
458 * Prison get non loopback ip:
459 * - af is the address family of the ip we want (AF_INET|AF_INET6).
460 * - If ip != NULL, put the first IP address that is not a loopback address
463 * ip is in network by order and we don't touch it unless we find a valid ip.
464 * No matter if ip == NULL or not, we return either a valid struct sockaddr *,
465 * or NULL. This struct may not be modified.
468 prison_get_nonlocal(struct prison *pr, sa_family_t af, struct sockaddr *ip)
470 struct sockaddr_in *ip4 = (struct sockaddr_in *)ip;
471 struct sockaddr_in6 *ip6 = (struct sockaddr_in6 *)ip;
473 /* Check if it is cached */
476 if (ip4 != NULL && pr->nonlocal_ip4 != NULL)
477 ip4->sin_addr.s_addr = pr->nonlocal_ip4->sin_addr.s_addr;
478 return (struct sockaddr *)pr->nonlocal_ip4;
481 if (ip6 != NULL && pr->nonlocal_ip6 != NULL)
482 ip6->sin6_addr = pr->nonlocal_ip6->sin6_addr;
483 return (struct sockaddr *)pr->nonlocal_ip6;
491 * Prison get loopback ip.
492 * - af is the address family of the ip we want (AF_INET|AF_INET6).
493 * - If ip != NULL, put the first IP address that is not a loopback address
496 * ip is in network by order and we don't touch it unless we find a valid ip.
497 * No matter if ip == NULL or not, we return either a valid struct sockaddr *,
498 * or NULL. This struct may not be modified.
501 prison_get_local(struct prison *pr, sa_family_t af, struct sockaddr *ip)
503 struct sockaddr_in *ip4 = (struct sockaddr_in *)ip;
504 struct sockaddr_in6 *ip6 = (struct sockaddr_in6 *)ip;
506 /* Check if it is cached */
509 if (ip4 != NULL && pr->local_ip4 != NULL)
510 ip4->sin_addr.s_addr = pr->local_ip4->sin_addr.s_addr;
511 return (struct sockaddr *)pr->local_ip4;
514 if (ip6 != NULL && pr->local_ip6 != NULL)
515 ip6->sin6_addr = pr->local_ip6->sin6_addr;
516 return (struct sockaddr *)pr->local_ip6;
523 /* Check if the IP is among ours, if it is return 1, else 0 */
525 jailed_ip(struct prison *pr, struct sockaddr *ip)
527 struct jail_ip_storage *jis;
528 struct sockaddr_in *jip4, *ip4;
529 struct sockaddr_in6 *jip6, *ip6;
533 ip4 = (struct sockaddr_in *)ip;
534 ip6 = (struct sockaddr_in6 *)ip;
536 lockmgr(&jail_lock, LK_EXCLUSIVE);
537 SLIST_FOREACH(jis, &pr->pr_ips, entries) {
538 switch (ip->sa_family) {
540 jip4 = (struct sockaddr_in *) &jis->ip;
541 if (jip4->sin_family == AF_INET &&
542 ip4->sin_addr.s_addr == jip4->sin_addr.s_addr) {
543 lockmgr(&jail_lock, LK_RELEASE);
548 jip6 = (struct sockaddr_in6 *) &jis->ip;
549 if (jip6->sin6_family == AF_INET6 &&
550 IN6_ARE_ADDR_EQUAL(&ip6->sin6_addr,
552 lockmgr(&jail_lock, LK_RELEASE);
558 lockmgr(&jail_lock, LK_RELEASE);
564 prison_if(struct ucred *cred, struct sockaddr *sa)
567 struct sockaddr_in *sai = (struct sockaddr_in*) sa;
569 pr = cred->cr_prison;
571 if (((sai->sin_family != AF_INET) && (sai->sin_family != AF_INET6))
572 && jail_socket_unixiproute_only)
574 else if ((sai->sin_family != AF_INET) && (sai->sin_family != AF_INET6))
576 else if (jailed_ip(pr, sa))
582 * Returns a prison instance, or NULL on failure.
584 static struct prison *
585 prison_find(int prid)
589 lockmgr(&jail_lock, LK_EXCLUSIVE);
590 LIST_FOREACH(pr, &allprison, pr_list) {
591 if (pr->pr_id == prid)
594 lockmgr(&jail_lock, LK_RELEASE);
600 sysctl_jail_list(SYSCTL_HANDLER_ARGS)
602 struct thread *td = curthread;
603 struct jail_ip_storage *jip;
605 struct sockaddr_in6 *jsin6;
607 struct sockaddr_in *jsin;
610 unsigned int jlssize, jlsused;
612 char *jls; /* Jail list */
613 char *oip; /* Output ip */
614 char *fullpath, *freepath;
618 if (jailed(td->td_ucred))
627 jlssize = (count * 1024);
628 jls = kmalloc(jlssize + 1, M_TEMP, M_WAITOK | M_ZERO);
629 if (count < prisoncount) {
635 lockmgr(&jail_lock, LK_EXCLUSIVE);
636 LIST_FOREACH(pr, &allprison, pr_list) {
637 error = cache_fullpath(lp->lwp_proc, &pr->pr_root, NULL,
638 &fullpath, &freepath, 0);
641 if (jlsused && jlsused < jlssize)
642 jls[jlsused++] = '\n';
643 count = ksnprintf(jls + jlsused, (jlssize - jlsused),
645 pr->pr_id, pr->pr_host, fullpath);
646 kfree(freepath, M_TEMP);
652 SLIST_FOREACH(jip, &pr->pr_ips, entries) {
653 char buf[INET_ADDRSTRLEN];
655 jsin = (struct sockaddr_in *)&jip->ip;
657 switch(jsin->sin_family) {
659 oip = kinet_ntoa(jsin->sin_addr, buf);
663 jsin6 = (struct sockaddr_in6 *)&jip->ip;
664 oip = ip6_sprintf(&jsin6->sin6_addr);
672 if ((jlssize - jlsused) < (strlen(oip) + 1)) {
676 count = ksnprintf(jls + jlsused, (jlssize - jlsused),
686 * pr_id <SPC> hostname1 <SPC> PATH1 <SPC> IP1 <SPC> IP2\npr_id...
688 error = SYSCTL_OUT(req, jls, jlsused);
690 lockmgr(&jail_lock, LK_RELEASE);
696 SYSCTL_OID(_jail, OID_AUTO, list, CTLTYPE_STRING | CTLFLAG_RD, NULL, 0,
697 sysctl_jail_list, "A", "List of active jails");
700 sysctl_jail_jailed(SYSCTL_HANDLER_ARGS)
704 injail = jailed(req->td->td_ucred);
705 error = SYSCTL_OUT(req, &injail, sizeof(injail));
710 SYSCTL_PROC(_jail, OID_AUTO, jailed,
711 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NOLOCK, NULL, 0,
712 sysctl_jail_jailed, "I", "Process in jail?");
718 prison_hold(struct prison *pr)
720 atomic_add_int(&pr->pr_ref, 1);
727 prison_free(struct prison *pr)
729 struct jail_ip_storage *jls;
731 KKASSERT(pr->pr_ref > 0);
732 if (atomic_fetchadd_int(&pr->pr_ref, -1) != 1)
736 * The MP lock is needed on the last ref to adjust
739 lockmgr(&jail_lock, LK_EXCLUSIVE);
741 lockmgr(&jail_lock, LK_RELEASE);
744 LIST_REMOVE(pr, pr_list);
750 while (!SLIST_EMPTY(&pr->pr_ips)) {
751 jls = SLIST_FIRST(&pr->pr_ips);
752 SLIST_REMOVE_HEAD(&pr->pr_ips, entries);
753 kfree(jls, M_PRISON);
755 lockmgr(&jail_lock, LK_RELEASE);
757 if (pr->pr_linux != NULL)
758 kfree(pr->pr_linux, M_PRISON);
759 varsymset_clean(&pr->pr_varsymset);
761 /* Release the sysctl tree */
762 prison_sysctl_done(pr);
764 cache_drop(&pr->pr_root);
769 * Check if permisson for a specific privilege is granted within jail.
774 prison_priv_check(struct ucred *cred, int priv)
776 struct prison *pr = cred->cr_prison;
782 case PRIV_CRED_SETUID:
783 case PRIV_CRED_SETEUID:
784 case PRIV_CRED_SETGID:
785 case PRIV_CRED_SETEGID:
786 case PRIV_CRED_SETGROUPS:
787 case PRIV_CRED_SETREUID:
788 case PRIV_CRED_SETREGID:
789 case PRIV_CRED_SETRESUID:
790 case PRIV_CRED_SETRESGID:
792 case PRIV_VFS_SYSFLAGS:
795 case PRIV_VFS_CHROOT:
797 case PRIV_VFS_CHFLAGS_DEV:
798 case PRIV_VFS_REVOKE:
799 case PRIV_VFS_MKNOD_BAD:
800 case PRIV_VFS_MKNOD_WHT:
801 case PRIV_VFS_MKNOD_DIR:
802 case PRIV_VFS_SETATTR:
803 case PRIV_VFS_SETGID:
805 case PRIV_PROC_SETRLIMIT:
806 case PRIV_PROC_SETLOGIN:
808 case PRIV_SYSCTL_WRITEJAIL:
810 case PRIV_VARSYM_SYS:
812 case PRIV_SETHOSTNAME:
814 case PRIV_PROC_TRESPASS:
818 case PRIV_UFS_QUOTAON:
819 case PRIV_UFS_QUOTAOFF:
820 case PRIV_VFS_SETQUOTA:
821 case PRIV_UFS_SETUSE:
822 case PRIV_VFS_GETQUOTA:
826 case PRIV_DEBUG_UNPRIV:
831 * Allow jailed root to bind reserved ports.
833 case PRIV_NETINET_RESERVEDPORT:
838 * Conditionally allow creating raw sockets in jail.
840 case PRIV_NETINET_RAW:
841 if (pr->pr_allow_raw_sockets)
846 case PRIV_HAMMER_IOCTL:
856 sysctl_prison_switch_int8(SYSCTL_HANDLER_ARGS, int8_t *val)
863 error = sysctl_handle_int(oidp, &new_val, 0, req);
864 if (error != 0 || req->newptr == NULL)
867 if (new_val != 0 && new_val != 1)
877 sysctl_prison_set_hostname_allowed(SYSCTL_HANDLER_ARGS)
886 error = sysctl_prison_switch_int8(oidp, arg1, arg2, req,
887 &pr->pr_set_hostname_allowed);
893 sysctl_prison_socket_unixiproute_only(SYSCTL_HANDLER_ARGS)
902 error = sysctl_prison_switch_int8(oidp, arg1, arg2, req,
903 &pr->pr_socket_unixiproute_only);
909 sysctl_prison_sysvipc_allowed(SYSCTL_HANDLER_ARGS)
918 error = sysctl_prison_switch_int8(oidp, arg1, arg2, req,
919 &pr->pr_sysvipc_allowed);
925 sysctl_prison_chflags_allowed(SYSCTL_HANDLER_ARGS)
934 error = sysctl_prison_switch_int8(oidp, arg1, arg2, req,
935 &pr->pr_chflags_allowed);
941 sysctl_prison_allow_raw_sockets(SYSCTL_HANDLER_ARGS)
950 error = sysctl_prison_switch_int8(oidp, arg1, arg2, req,
951 &pr->pr_allow_raw_sockets);
957 * Create a per-jail sysctl tree to control the prison
960 prison_sysctl_create(struct prison *pr)
964 ksnprintf(id_str, 6, "%d", pr->pr_id);
966 pr->pr_sysctl_ctx = (struct sysctl_ctx_list *) kmalloc(
967 sizeof(struct sysctl_ctx_list), M_TEMP, M_WAITOK | M_ZERO);
969 sysctl_ctx_init(pr->pr_sysctl_ctx);
972 pr->pr_sysctl_tree = SYSCTL_ADD_NODE(pr->pr_sysctl_ctx,
973 SYSCTL_STATIC_CHILDREN(_jail),
974 OID_AUTO, id_str, CTLFLAG_RD, 0,
975 "Jail specific settings");
977 SYSCTL_ADD_PROC(pr->pr_sysctl_ctx,
978 SYSCTL_CHILDREN(pr->pr_sysctl_tree), OID_AUTO,
979 "set_hostname_allowed", CTLTYPE_INT | CTLFLAG_RW,
980 pr, sizeof(pr->pr_set_hostname_allowed),
981 sysctl_prison_set_hostname_allowed, "I",
982 "Processes in jail can set their hostnames");
983 SYSCTL_ADD_PROC(pr->pr_sysctl_ctx,
984 SYSCTL_CHILDREN(pr->pr_sysctl_tree), OID_AUTO,
985 "socket_unixiproute_only", CTLTYPE_INT | CTLFLAG_RW,
986 pr, sizeof(pr->pr_socket_unixiproute_only),
987 sysctl_prison_socket_unixiproute_only, "I",
988 "Processes in jail are limited to creating UNIX/IPv[46]/route sockets only");
989 SYSCTL_ADD_PROC(pr->pr_sysctl_ctx,
990 SYSCTL_CHILDREN(pr->pr_sysctl_tree), OID_AUTO,
991 "sysvipc_allowed", CTLTYPE_INT | CTLFLAG_RW,
992 pr, sizeof(pr->pr_sysvipc_allowed),
993 sysctl_prison_sysvipc_allowed, "I",
994 "Processes in jail can use System V IPC primitives");
995 SYSCTL_ADD_PROC(pr->pr_sysctl_ctx,
996 SYSCTL_CHILDREN(pr->pr_sysctl_tree), OID_AUTO,
997 "chflags_allowed", CTLTYPE_INT | CTLFLAG_RW,
998 pr, sizeof(pr->pr_chflags_allowed),
999 sysctl_prison_chflags_allowed, "I",
1000 "Processes in jail can alter system file flags");
1001 SYSCTL_ADD_PROC(pr->pr_sysctl_ctx,
1002 SYSCTL_CHILDREN(pr->pr_sysctl_tree), OID_AUTO,
1003 "allow_raw_sockets", CTLTYPE_INT | CTLFLAG_RW,
1004 pr, sizeof(pr->pr_allow_raw_sockets),
1005 sysctl_prison_allow_raw_sockets, "I",
1006 "Process in jail can create raw sockets");
1012 prison_sysctl_done(struct prison *pr)
1014 if (pr->pr_sysctl_tree) {
1015 sysctl_ctx_free(pr->pr_sysctl_ctx);
1016 kfree(pr->pr_sysctl_ctx, M_TEMP);
1017 pr->pr_sysctl_tree = NULL;