1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999 Poul-Henning Kamp.
5 * Copyright (c) 2009 James Gritton.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef _SYS_JAIL_H_
31 #define _SYS_JAIL_H_
32
33 #ifdef _KERNEL
34 struct jail_v0 {
35 u_int32_t version;
36 char *path;
37 char *hostname;
38 u_int32_t ip_number;
39 };
40 #endif
41
42 struct jail {
43 uint32_t version;
44 char *path;
45 char *hostname;
46 char *jailname;
47 uint32_t ip4s;
48 uint32_t ip6s;
49 struct in_addr *ip4;
50 struct in6_addr *ip6;
51 };
52 #define JAIL_API_VERSION 2
53
54 /*
55 * For all xprison structs, always keep the pr_version an int and
56 * the first variable so userspace can easily distinguish them.
57 */
58 #ifndef _KERNEL
59 struct xprison_v1 {
60 int pr_version;
61 int pr_id;
62 char pr_path[MAXPATHLEN];
63 char pr_host[MAXHOSTNAMELEN];
64 u_int32_t pr_ip;
65 };
66 #endif
67
68 struct xprison {
69 int pr_version;
70 int pr_id;
71 int pr_state;
72 cpusetid_t pr_cpusetid;
73 char pr_path[MAXPATHLEN];
74 char pr_host[MAXHOSTNAMELEN];
75 char pr_name[MAXHOSTNAMELEN];
76 uint32_t pr_ip4s;
77 uint32_t pr_ip6s;
78 #if 0
79 /*
80 * sizeof(xprison) will be malloced + size needed for all
81 * IPv4 and IPv6 addesses. Offsets are based numbers of addresses.
82 */
83 struct in_addr pr_ip4[];
84 struct in6_addr pr_ip6[];
85 #endif
86 };
87 #define XPRISON_VERSION 3
88
89 enum prison_state {
90 PRISON_STATE_INVALID = 0, /* New prison, not ready to be seen */
91 PRISON_STATE_ALIVE, /* Current prison, visible to all */
92 PRISON_STATE_DYING /* Removed but holding resources, */
93 }; /* optionally visible. */
94
95 /*
96 * Flags for jail_set and jail_get.
97 */
98 #define JAIL_CREATE 0x01 /* Create jail if it doesn't exist */
99 #define JAIL_UPDATE 0x02 /* Update parameters of existing jail */
100 #define JAIL_ATTACH 0x04 /* Attach to jail upon creation */
101 #define JAIL_DYING 0x08 /* Allow getting a dying jail */
102 #define JAIL_USE_DESC 0x10 /* Get/set jail in descriptor */
103 #define JAIL_AT_DESC 0x20 /* Find/add jail under descriptor */
104 #define JAIL_GET_DESC 0x40 /* Return a new jail descriptor */
105 #define JAIL_OWN_DESC 0x80 /* Return a new owning jail descriptor */
106 #define JAIL_SET_MASK 0xff /* JAIL_DYING is deprecated/ignored here */
107 #define JAIL_GET_MASK 0xf8
108
109 #define JAIL_SYS_DISABLE 0
110 #define JAIL_SYS_NEW 1
111 #define JAIL_SYS_INHERIT 2
112
113 #ifndef _KERNEL
114
115 struct iovec;
116
117 __BEGIN_DECLS
118 int jail(struct jail *);
119 int jail_set(struct iovec *, unsigned int, int);
120 int jail_get(struct iovec *, unsigned int, int);
121 int jail_attach(int);
122 int jail_attach_jd(int);
123 int jail_remove(int);
124 int jail_remove_jd(int);
125 __END_DECLS
126
127 #else /* _KERNEL */
128
129 #include <sys/queue.h>
130 #include <sys/sysctl.h>
131 #include <sys/lock.h>
132 #include <sys/mutex.h>
133 #include <sys/_task.h>
134
135 #define JAIL_MAX 999999
136
137 #ifdef MALLOC_DECLARE
138 MALLOC_DECLARE(M_PRISON);
139 #endif
140 #endif /* _KERNEL */
141
142 #if defined(_KERNEL) || defined(_WANT_PRISON)
143
144 #include <sys/osd.h>
145
146 #define HOSTUUIDLEN 64
147 #define DEFAULT_HOSTUUID "00000000-0000-0000-0000-000000000000"
148 #define OSRELEASELEN 32
149
150 #define JAIL_META_PRIVATE "meta"
151 #define JAIL_META_SHARED "env"
152
153 struct jaildesc;
154 struct knlist;
155 struct racct;
156 struct prison_racct;
157
158 typedef enum {
159 PR_INET = 0,
160 PR_INET6 = 1,
161 PR_FAMILY_MAX = 2,
162 } pr_family_t;
163
164 /*
165 * This structure describes a prison. It is pointed to by all struct
166 * ucreds's of the inmates. pr_ref keeps track of them and is used to
167 * delete the structure when the last inmate is dead.
168 *
169 * Lock key:
170 * (a) allprison_lock
171 * (A) allproc_lock
172 * (c) set only during creation before the structure is shared, no mutex
173 * required to read
174 * (m) locked by pr_mtx
175 * (p) locked by pr_mtx, and also at least shared allprison_lock required
176 * to update
177 * (q) locked by both pr_mtx and allprison_lock
178 * (r) atomic via refcount(9), pr_mtx and allprison_lock required to
179 * decrement to zero
180 * (n) read access granted with the network epoch
181 */
182 struct prison {
183 TAILQ_ENTRY(prison) pr_list; /* (a) all prisons */
184 int pr_id; /* (c) prison id */
185 volatile u_int pr_ref; /* (r) refcount */
186 volatile u_int pr_uref; /* (r) user (alive) refcount */
187 unsigned pr_flags; /* (p) PR_* flags */
188 LIST_HEAD(, prison) pr_children; /* (a) list of child jails */
189 LIST_HEAD(, proc) pr_proclist; /* (A) list of jailed processes */
190 LIST_ENTRY(prison) pr_sibling; /* (a) next in parent's list */
191 struct prison *pr_parent; /* (c) containing jail */
192 struct mtx pr_mtx;
193 struct task pr_task; /* (c) destroy task */
194 struct osd pr_osd; /* (p) additional data */
195 struct cpuset *pr_cpuset; /* (p) cpuset */
196 struct vnet *pr_vnet; /* (c) network stack */
197 struct vnode *pr_root; /* (c) vnode to rdir */
198 struct prison_ip *pr_addrs[PR_FAMILY_MAX]; /* (p,n) IPs of jail */
199 struct prison_racct *pr_prison_racct; /* (c) racct jail proxy */
200 struct knlist *pr_klist; /* (m) attached knotes */
201 struct label *pr_label; /* (m) MAC label */
202 LIST_HEAD(, jaildesc) pr_descs; /* (a) attached descriptors */
203 void *pr_sparep;
204 int pr_childcount; /* (a) number of child jails */
205 int pr_childmax; /* (p) maximum child jails */
206 unsigned pr_allow; /* (p) PR_ALLOW_* flags */
207 int pr_securelevel; /* (p) securelevel */
208 int pr_enforce_statfs; /* (p) statfs permission */
209 int pr_devfs_rsnum; /* (p) devfs ruleset */
210 enum prison_state pr_state; /* (q) state in life cycle */
211 volatile int pr_exportcnt; /* (r) count of mount exports */
212 int pr_spare;
213 int pr_osreldate; /* (c) kern.osreldate value */
214 unsigned long pr_hostid; /* (p) jail hostid */
215 char pr_name[MAXHOSTNAMELEN]; /* (p) admin jail name */
216 char pr_path[MAXPATHLEN]; /* (c) chroot path */
217 char pr_hostname[MAXHOSTNAMELEN]; /* (p) jail hostname */
218 char pr_domainname[MAXHOSTNAMELEN]; /* (p) jail domainname */
219 char pr_hostuuid[HOSTUUIDLEN]; /* (p) jail hostuuid */
220 char pr_osrelease[OSRELEASELEN]; /* (c) kern.osrelease value */
221 };
222
223 struct prison_racct {
224 LIST_ENTRY(prison_racct) prr_next;
225 char prr_name[MAXHOSTNAMELEN];
226 u_int prr_refcount;
227 struct racct *prr_racct;
228 };
229 #endif /* _KERNEL || _WANT_PRISON */
230
231 #ifdef _KERNEL
232 /* Flag bits set via options */
233 #define PR_PERSIST 0x00000001 /* Can exist without processes */
234 #define PR_HOST 0x00000002 /* Virtualize hostname et al */
235 #define PR_IP4_USER 0x00000004 /* Restrict IPv4 addresses */
236 #define PR_IP6_USER 0x00000008 /* Restrict IPv6 addresses */
237 #define PR_VNET 0x00000010 /* Virtual network stack */
238 #define PR_IP4_SADDRSEL 0x00000080 /* Do IPv4 src addr sel. or use the */
239 /* primary jail address. */
240 #define PR_IP6_SADDRSEL 0x00000100 /* Do IPv6 src addr sel. or use the */
241 /* primary jail address. */
242
243 /* Internal flag bits */
244 #define PR_REMOVE 0x01000000 /* In process of being removed */
245 #define PR_IP4 0x02000000 /* IPv4 restricted or disabled */
246 /* by this jail or an ancestor */
247 #define PR_IP6 0x04000000 /* IPv6 restricted or disabled */
248 /* by this jail or an ancestor */
249 #define PR_COMPLETE_PROC 0x08000000 /* prison_complete called from */
250 /* prison_proc_free, releases uref */
251
252 /*
253 * Flags for pr_allow
254 * Bits not noted here may be used for dynamic allow.mount.xxxfs.
255 */
256 #define PR_ALLOW_SET_HOSTNAME 0x00000001
257 #define PR_ALLOW_SYSVIPC 0x00000002
258 #define PR_ALLOW_RAW_SOCKETS 0x00000004
259 #define PR_ALLOW_CHFLAGS 0x00000008
260 #define PR_ALLOW_MOUNT 0x00000010
261 #define PR_ALLOW_QUOTAS 0x00000020
262 #define PR_ALLOW_SOCKET_AF 0x00000040
263 #define PR_ALLOW_MLOCK 0x00000080
264 #define PR_ALLOW_READ_MSGBUF 0x00000100
265 #define PR_ALLOW_UNPRIV_DEBUG 0x00000200
266 #define PR_ALLOW_SUSER 0x00000400
267 #define PR_ALLOW_RESERVED_PORTS 0x00008000
268 #define PR_ALLOW_KMEM_ACCESS 0x00010000 /* reserved, not used yet */
269 #define PR_ALLOW_NFSD 0x00020000
270 #define PR_ALLOW_EXTATTR 0x00040000
271 #define PR_ALLOW_ADJTIME 0x00080000
272 #define PR_ALLOW_SETTIME 0x00100000
273 #define PR_ALLOW_ROUTING 0x00200000
274 #define PR_ALLOW_UNPRIV_PARENT_TAMPER 0x00400000
275 #define PR_ALLOW_SETAUDIT 0x00800000
276
277 /*
278 * PR_ALLOW_PRISON0 are the allow flags that we apply by default to prison0,
279 * while PR_ALLOW_ALL_STATIC are all of the allow bits that we have allocated at
280 * build time. PR_ALLOW_ALL_STATIC should contain any bit above that we expect
281 * to be used on the system, while PR_ALLOW_PRISON0 will be some subset of that.
282 */
283 #define PR_ALLOW_ALL_STATIC 0x00ff87ff
284 #define PR_ALLOW_PRISON0 \
285 (PR_ALLOW_ALL_STATIC & ~(PR_ALLOW_UNPRIV_PARENT_TAMPER))
286
287 /*
288 * PR_ALLOW_DIFFERENCES determines which flags are able to be
289 * different between the parent and child jail upon creation.
290 */
291 #define PR_ALLOW_DIFFERENCES \
292 (PR_ALLOW_UNPRIV_DEBUG | PR_ALLOW_UNPRIV_PARENT_TAMPER)
293
294 /*
295 * OSD methods
296 */
297 #define PR_METHOD_CREATE 0
298 #define PR_METHOD_GET 1
299 #define PR_METHOD_SET 2
300 #define PR_METHOD_CHECK 3
301 #define PR_METHOD_ATTACH 4
302 #define PR_METHOD_REMOVE 5
303 #define PR_MAXMETHOD 6
304
305 /*
306 * Lock/unlock a prison.
307 * XXX These exist not so much for general convenience, but to be useable in
308 * the FOREACH_PRISON_DESCENDANT_LOCKED macro which can't handle them in
309 * non-function form as currently defined.
310 */
311 static __inline void
prison_lock(struct prison * pr)312 prison_lock(struct prison *pr)
313 {
314
315 mtx_lock(&pr->pr_mtx);
316 }
317
318 static __inline void
prison_unlock(struct prison * pr)319 prison_unlock(struct prison *pr)
320 {
321
322 mtx_unlock(&pr->pr_mtx);
323 }
324
325 /* Traverse a prison's immediate children. */
326 #define FOREACH_PRISON_CHILD(ppr, cpr) \
327 LIST_FOREACH(cpr, &(ppr)->pr_children, pr_sibling)
328
329 /*
330 * Preorder traversal of all of a prison's descendants.
331 * This ugly loop allows the macro to be followed by a single block
332 * as expected in a looping primitive.
333 */
334 #define FOREACH_PRISON_DESCENDANT(ppr, cpr, descend) \
335 for ((cpr) = (ppr), (descend) = 1; \
336 ((cpr) = (((descend) && !LIST_EMPTY(&(cpr)->pr_children)) \
337 ? LIST_FIRST(&(cpr)->pr_children) \
338 : ((cpr) == (ppr) \
339 ? NULL \
340 : (((descend) = LIST_NEXT(cpr, pr_sibling) != NULL) \
341 ? LIST_NEXT(cpr, pr_sibling) \
342 : (cpr)->pr_parent))));) \
343 if (!(descend)) \
344 ; \
345 else
346
347 /*
348 * As above, but lock descendants on the way down and unlock on the way up.
349 */
350 #define FOREACH_PRISON_DESCENDANT_LOCKED(ppr, cpr, descend) \
351 for ((cpr) = (ppr), (descend) = 1; \
352 ((cpr) = (((descend) && !LIST_EMPTY(&(cpr)->pr_children)) \
353 ? LIST_FIRST(&(cpr)->pr_children) \
354 : ((cpr) == (ppr) \
355 ? NULL \
356 : ((prison_unlock(cpr), \
357 (descend) = LIST_NEXT(cpr, pr_sibling) != NULL) \
358 ? LIST_NEXT(cpr, pr_sibling) \
359 : (cpr)->pr_parent))));) \
360 if ((descend) ? (prison_lock(cpr), 0) : 1) \
361 ; \
362 else
363
364 /*
365 * As above, but also keep track of the level descended to.
366 */
367 #define FOREACH_PRISON_DESCENDANT_LOCKED_LEVEL(ppr, cpr, descend, level)\
368 for ((cpr) = (ppr), (descend) = 1, (level) = 0; \
369 ((cpr) = (((descend) && !LIST_EMPTY(&(cpr)->pr_children)) \
370 ? (level++, LIST_FIRST(&(cpr)->pr_children)) \
371 : ((cpr) == (ppr) \
372 ? NULL \
373 : ((prison_unlock(cpr), \
374 (descend) = LIST_NEXT(cpr, pr_sibling) != NULL) \
375 ? LIST_NEXT(cpr, pr_sibling) \
376 : (level--, (cpr)->pr_parent)))));) \
377 if ((descend) ? (prison_lock(cpr), 0) : 1) \
378 ; \
379 else
380
381 /*
382 * Traverse a prison's descendants, visiting both preorder and postorder.
383 */
384 #define FOREACH_PRISON_DESCENDANT_PRE_POST(ppr, cpr, descend) \
385 for ((cpr) = (ppr), (descend) = 1; \
386 ((cpr) = (descend) \
387 ? ((descend) = !LIST_EMPTY(&(cpr)->pr_children)) \
388 ? LIST_FIRST(&(cpr)->pr_children) \
389 : (cpr) \
390 : ((descend) = LIST_NEXT(cpr, pr_sibling) != NULL) \
391 ? LIST_NEXT(cpr, pr_sibling) \
392 : cpr->pr_parent) != (ppr);)
393
394 /*
395 * Attributes of the physical system, and the root of the jail tree.
396 */
397 extern struct prison prison0;
398
399 TAILQ_HEAD(prisonlist, prison);
400 extern struct prisonlist allprison;
401 extern struct sx allprison_lock;
402
403 /*
404 * Sysctls to describe jail parameters.
405 */
406 SYSCTL_DECL(_security_jail);
407 SYSCTL_DECL(_security_jail_param);
408
409 #define SYSCTL_JAIL_PARAM_DECL(name) \
410 SYSCTL_DECL(_security_jail_param_##name)
411 #define SYSCTL_JAIL_PARAM(module, param, type, fmt, descr) \
412 SYSCTL_PROC(_security_jail_param ## module, OID_AUTO, param, \
413 (type) | CTLFLAG_MPSAFE, NULL, 0, sysctl_jail_param, fmt, descr)
414 #define SYSCTL_JAIL_PARAM_STRING(module, param, access, len, descr) \
415 SYSCTL_PROC(_security_jail_param ## module, OID_AUTO, param, \
416 CTLTYPE_STRING | CTLFLAG_MPSAFE | (access), NULL, len, \
417 sysctl_jail_param, "A", descr)
418 #define SYSCTL_JAIL_PARAM_STRUCT(module, param, access, len, fmt, descr) \
419 SYSCTL_PROC(_security_jail_param ## module, OID_AUTO, param, \
420 CTLTYPE_STRUCT | CTLFLAG_MPSAFE | (access), NULL, len, \
421 sysctl_jail_param, fmt, descr)
422 #define SYSCTL_JAIL_PARAM_NODE(module, descr) \
423 SYSCTL_NODE(_security_jail_param, OID_AUTO, module, CTLFLAG_MPSAFE, \
424 0, descr)
425 #define SYSCTL_JAIL_PARAM_SUBNODE(parent, module, descr) \
426 SYSCTL_NODE(_security_jail_param_##parent, OID_AUTO, module, \
427 CTLFLAG_MPSAFE, 0, descr)
428 #define SYSCTL_JAIL_PARAM_SYS_NODE(module, access, descr) \
429 SYSCTL_JAIL_PARAM_NODE(module, descr); \
430 SYSCTL_JAIL_PARAM(_##module, , CTLTYPE_INT | (access), "E,jailsys", \
431 descr)
432 #define SYSCTL_JAIL_PARAM_SYS_SUBNODE(parent, module, access, descr) \
433 SYSCTL_JAIL_PARAM_SUBNODE(parent, module, descr); \
434 SYSCTL_JAIL_PARAM(_##parent##_##module, , CTLTYPE_INT | (access), \
435 "E,jailsys", descr)
436
437 /*
438 * Kernel support functions for jail().
439 */
440 struct knote;
441 struct mount;
442 struct sockaddr;
443 struct statfs;
444 struct ucred;
445 struct vfsconf;
446
447 /*
448 * Return 1 if the passed credential is in a jail, otherwise 0.
449 */
450 #define jailed(cred) (cred->cr_prison != &prison0)
451
452 bool jailed_without_vnet(struct ucred *);
453 void getcredhostname(struct ucred *, char *, size_t);
454 void getcreddomainname(struct ucred *, char *, size_t);
455 void getcredhostuuid(struct ucred *, char *, size_t);
456 void getcredhostid(struct ucred *, unsigned long *);
457 void getjailname(struct ucred *cred, char *name, size_t len);
458 void prison0_init(void);
459 bool prison_allow(struct ucred *, unsigned);
460 int prison_check(struct ucred *cred1, struct ucred *cred2);
461 bool prison_check_nfsd(struct ucred *cred);
462 bool prison_owns_vnet(struct prison *pr);
463 int prison_canseemount(struct ucred *cred, struct mount *mp);
464 void prison_enforce_statfs(struct ucred *cred, struct mount *mp,
465 struct statfs *sp);
466 struct prison *prison_find(int prid);
467 struct prison *prison_find_child(struct prison *, int);
468 struct prison *prison_find_name(struct prison *, const char *);
469 bool prison_flag(struct ucred *, unsigned);
470 void prison_free(struct prison *pr);
471 void prison_free_locked(struct prison *pr);
472 void prison_hold(struct prison *pr);
473 void prison_hold_locked(struct prison *pr);
474 void prison_proc_hold(struct prison *);
475 void prison_proc_free(struct prison *);
476 void prison_proc_link(struct prison *, struct proc *);
477 void prison_proc_unlink(struct prison *, struct proc *);
478 void prison_proc_iterate(struct prison *, void (*)(struct proc *, void *), void *);
479 void prison_remove(struct prison *);
480 void prison_set_allow(struct ucred *cred, unsigned flag, int enable);
481 bool prison_ischild(struct prison *, struct prison *);
482 bool prison_isalive(const struct prison *);
483 bool prison_isvalid(struct prison *);
484 #if defined(INET) || defined(INET6)
485 int prison_ip_check(const struct prison *, const pr_family_t, const void *);
486 const void *prison_ip_get0(const struct prison *, const pr_family_t);
487 u_int prison_ip_cnt(const struct prison *, const pr_family_t);
488 #endif
489 #ifdef INET
490 bool prison_equal_ip4(struct prison *, struct prison *);
491 int prison_get_ip4(struct ucred *cred, struct in_addr *ia);
492 int prison_local_ip4(struct ucred *cred, struct in_addr *ia);
493 int prison_remote_ip4(struct ucred *cred, struct in_addr *ia);
494 int prison_check_ip4(const struct ucred *, const struct in_addr *);
495 int prison_check_ip4_locked(const struct prison *, const struct in_addr *);
496 bool prison_saddrsel_ip4(struct ucred *, struct in_addr *);
497 int prison_qcmp_v4(const void *, const void *);
498 bool prison_valid_v4(const void *);
499 #endif
500 #ifdef INET6
501 bool prison_equal_ip6(struct prison *, struct prison *);
502 int prison_get_ip6(struct ucred *, struct in6_addr *);
503 int prison_local_ip6(struct ucred *, struct in6_addr *, int);
504 int prison_remote_ip6(struct ucred *, struct in6_addr *);
505 int prison_check_ip6(const struct ucred *, const struct in6_addr *);
506 int prison_check_ip6_locked(const struct prison *, const struct in6_addr *);
507 bool prison_saddrsel_ip6(struct ucred *, struct in6_addr *);
508 int prison_qcmp_v6(const void *, const void *);
509 bool prison_valid_v6(const void *);
510 #endif
511 int prison_check_af(struct ucred *cred, int af);
512 int prison_if(struct ucred *cred, const struct sockaddr *sa);
513 char *prison_name(struct prison *, struct prison *);
514 int prison_priv_check(struct ucred *cred, int priv);
515 int sysctl_jail_param(SYSCTL_HANDLER_ARGS);
516 unsigned prison_add_allow(const char *prefix, const char *name,
517 const char *prefix_descr, const char *descr);
518 void prison_add_vfs(struct vfsconf *vfsp);
519 void prison_racct_foreach(void (*callback)(struct racct *racct,
520 void *arg2, void *arg3), void (*pre)(void), void (*post)(void),
521 void *arg2, void *arg3);
522 struct prison_racct *prison_racct_find(const char *name);
523 void prison_racct_hold(struct prison_racct *prr);
524 void prison_racct_free(struct prison_racct *prr);
525
526 #endif /* _KERNEL */
527 #endif /* !_SYS_JAIL_H_ */
528