1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2004 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #ifndef __LINUX_SEC_H_
23 #define __LINUX_SEC_H_
25 enum ptlrpcs_major_flavors {
26 PTLRPCS_FLVR_MAJOR_NULL = 0,
27 PTLRPCS_FLVR_MAJOR_GSS = 1,
28 PTLRPCS_FLVR_MAJOR_MAX,
31 enum ptlrpcs_null_minor_flavors {
32 PTLRPCS_FLVR_MINOR_NULL = 0,
33 PTLRPCS_FLVR_MINOR_NULL_MAX,
36 enum ptlrpcs_gss_minor_flavors {
37 PTLRPCS_FLVR_MINOR_GSS_NONE = 0,
38 PTLRPCS_FLVR_MINOR_GSS_KRB5 = 1,
39 PTLRPCS_FLVR_MINOR_GSS_MAX,
42 enum ptlrpcs_security_type {
43 PTLRPCS_SVC_NONE = 0, /* no security */
44 PTLRPCS_SVC_AUTH = 1, /* authentication */
45 PTLRPCS_SVC_PRIV = 2, /* privacy */
50 * flavor compose/extract
52 #define SEC_FLAVOR_MAJOR_OFFSET (24)
53 #define SEC_FLAVOR_RESERVE_OFFSET (16)
54 #define SEC_FLAVOR_SVC_OFFSET (8)
55 #define SEC_FLAVOR_MINOR_OFFSET (0)
57 #define SEC_MAKE_FLAVOR(major, minor, svc) \
58 (((__u32)(major) << SEC_FLAVOR_MAJOR_OFFSET) | \
59 ((__u32)(svc) << SEC_FLAVOR_SVC_OFFSET) | \
60 ((__u32)(minor) << SEC_FLAVOR_MINOR_OFFSET))
62 #define SEC_MAKE_SUBFLAVOR(minor, svc) \
63 (((__u32)(svc) << SEC_FLAVOR_SVC_OFFSET) | \
64 ((__u32)(minor) << SEC_FLAVOR_MINOR_OFFSET))
66 #define SEC_FLAVOR_MAJOR(flavor) \
67 ((((__u32)(flavor)) >> SEC_FLAVOR_MAJOR_OFFSET) & 0xFF)
68 #define SEC_FLAVOR_MINOR(flavor) \
69 ((((__u32)(flavor)) >> SEC_FLAVOR_MINOR_OFFSET) & 0xFF)
70 #define SEC_FLAVOR_SVC(flavor) \
71 ((((__u32)(flavor)) >> SEC_FLAVOR_SVC_OFFSET) & 0xFF)
72 #define SEC_FLAVOR_SUB(flavor) \
73 ((((__u32)(flavor)) >> SEC_FLAVOR_MINOR_OFFSET) & 0xFFFF)
78 #define PTLRPCS_FLVR_GSS_NONE \
79 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
80 PTLRPCS_FLVR_MINOR_GSS_NONE, \
82 #define PTLRPCS_FLVR_GSS_AUTH \
83 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
84 PTLRPCS_FLVR_MINOR_GSS_NONE, \
86 #define PTLRPCS_FLVR_GSS_PRIV \
87 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
88 PTLRPCS_FLVR_MINOR_GSS_NONE, \
94 #define PTLRPCS_SUBFLVR_KRB5 \
95 SEC_MAKE_SUBFLAVOR(PTLRPCS_FLVR_MINOR_GSS_KRB5, \
97 #define PTLRPCS_SUBFLVR_KRB5I \
98 SEC_MAKE_SUBFLAVOR(PTLRPCS_FLVR_MINOR_GSS_KRB5, \
100 #define PTLRPCS_SUBFLVR_KRB5P \
101 SEC_MAKE_SUBFLAVOR(PTLRPCS_FLVR_MINOR_GSS_KRB5, \
107 #define PTLRPCS_FLVR_NULL \
108 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_NULL, \
109 PTLRPCS_FLVR_MINOR_NULL, \
111 #define PTLRPCS_FLVR_KRB5 \
112 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
113 PTLRPCS_FLVR_MINOR_GSS_KRB5, \
115 #define PTLRPCS_FLVR_KRB5I \
116 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
117 PTLRPCS_FLVR_MINOR_GSS_KRB5, \
119 #define PTLRPCS_FLVR_KRB5P \
120 SEC_MAKE_FLAVOR(PTLRPCS_FLVR_MAJOR_GSS, \
121 PTLRPCS_FLVR_MINOR_GSS_KRB5, \
124 #define PTLRPCS_FLVR_INVALID (-1)
126 __u32 ptlrpcs_name2flavor(const char *name);
127 char *ptlrpcs_flavor2name(__u32 flavor);
130 /* forward declaration */
132 struct ptlrpc_request;
134 struct ptlrpc_credops;
136 struct ptlrpc_secops;
139 struct list_head list;
144 * This header is prepended at any on-wire ptlrpc packets
146 struct ptlrpcs_wire_hdr {
154 struct ptlrpcs_wire_hdr *buf_to_sec_hdr(void *buf)
156 return (struct ptlrpcs_wire_hdr *) buf;
160 struct lustre_msg *buf_to_lustre_msg(void *buf)
162 return (struct lustre_msg *)
163 ((char *) buf + sizeof(struct ptlrpcs_wire_hdr));
167 __u8 *buf_to_sec_data(void *buf)
169 struct ptlrpcs_wire_hdr *hdr = buf_to_sec_hdr(buf);
170 return (__u8 *) (buf + sizeof(*hdr) + hdr->msg_len);
173 #define PTLRPC_SEC_GSS_VERSION (1)
175 enum ptlrpcs_gss_proc {
176 PTLRPCS_GSS_PROC_DATA = 0,
177 PTLRPCS_GSS_PROC_INIT = 1,
178 PTLRPCS_GSS_PROC_CONTINUE_INIT = 2,
179 PTLRPCS_GSS_PROC_DESTROY = 3,
180 PTLRPCS_GSS_PROC_ERR = 4,
183 enum ptlrpcs_gss_svc {
184 PTLRPCS_GSS_SVC_NONE = 1,
185 PTLRPCS_GSS_SVC_INTEGRITY = 2,
186 PTLRPCS_GSS_SVC_PRIVACY = 3,
192 PTLRPCS_REJECTEDCRED = 2,
194 PTLRPCS_REJECTEDVERF = 4,
197 PTLRPCS_GSS_CREDPROBLEM = 13,
198 PTLRPCS_GSS_CTXPROBLEM = 14,
205 struct group_info *vc_ginfo;
208 struct ptlrpc_credops {
209 int (*match) (struct ptlrpc_cred *cred, struct vfs_cred *vcred);
210 int (*refresh)(struct ptlrpc_cred *cred);
211 void (*destroy)(struct ptlrpc_cred *cred);
212 int (*sign) (struct ptlrpc_cred *cred,
213 struct ptlrpc_request *req);
214 int (*verify) (struct ptlrpc_cred *cred,
215 struct ptlrpc_request *req);
216 int (*seal) (struct ptlrpc_cred *cred,
217 struct ptlrpc_request *req);
218 int (*unseal) (struct ptlrpc_cred *cred,
219 struct ptlrpc_request *req);
222 #define PTLRPC_CRED_UPTODATE_BIT 0 /* uptodate */
223 #define PTLRPC_CRED_DEAD_BIT 1 /* mark expired gracefully */
224 #define PTLRPC_CRED_ERROR_BIT 2 /* fatal error (refresh, etc.) */
226 #define PTLRPC_CRED_UPTODATE (1 << PTLRPC_CRED_UPTODATE_BIT)
227 #define PTLRPC_CRED_DEAD (1 << PTLRPC_CRED_DEAD_BIT)
228 #define PTLRPC_CRED_ERROR (1 << PTLRPC_CRED_ERROR_BIT)
230 #define PTLRPC_CRED_FLAGS_MASK (PTLRPC_CRED_UPTODATE | \
235 struct list_head pc_hash; /* linked into hash table */
236 atomic_t pc_refcount;
237 struct ptlrpc_sec *pc_sec;
238 struct ptlrpc_credops *pc_ops;
239 unsigned long pc_expire;
240 unsigned long pc_flags;
241 /* XXX maybe should not be here */
246 struct ptlrpc_secops {
247 struct ptlrpc_sec * (*create_sec) (__u32 flavor,
248 const char *pipe_dir,
250 void (*destroy_sec) (struct ptlrpc_sec *sec);
251 struct ptlrpc_cred * (*create_cred) (struct ptlrpc_sec *sec,
252 struct vfs_cred *vcred);
253 /* buffer manipulation */
254 int (*alloc_reqbuf) (struct ptlrpc_sec *sec,
255 struct ptlrpc_request *req,
256 int lustre_msg_size);
257 int (*alloc_repbuf) (struct ptlrpc_sec *sec,
258 struct ptlrpc_request *req,
259 int lustre_msg_size);
260 void (*free_reqbuf) (struct ptlrpc_sec *sec,
261 struct ptlrpc_request *req);
262 void (*free_repbuf) (struct ptlrpc_sec *sec,
263 struct ptlrpc_request *req);
264 /* security payload size estimation */
265 int (*est_req_payload)(struct ptlrpc_sec *sec,
266 struct ptlrpc_request *req,
268 int (*est_rep_payload)(struct ptlrpc_sec *sec,
269 struct ptlrpc_request *req,
273 struct ptlrpc_sec_type {
274 struct module *pst_owner;
276 atomic_t pst_inst; /* instance, debug only */
277 __u32 pst_flavor; /* major flavor */
278 struct ptlrpc_secops *pst_ops;
281 #define PTLRPC_SEC_FL_MDS 0x0001 /* outgoing from MDS */
282 #define PTLRPC_SEC_FL_REVERSE 0x0002 /* reverse sec */
283 #define PTLRPC_SEC_FL_PAG 0x0004 /* enable PAG */
285 #define PTLRPC_CREDCACHE_NR 8
286 #define PTLRPC_CREDCACHE_MASK (PTLRPC_CREDCACHE_NR - 1)
289 struct ptlrpc_sec_type *ps_type;
290 struct list_head ps_credcache[PTLRPC_CREDCACHE_NR];
291 spinlock_t ps_lock; /* protect cred cache */
293 atomic_t ps_refcount;
294 atomic_t ps_credcount;
295 struct obd_import *ps_import;
296 /* actual security model need initialize following fields */
297 unsigned long ps_expire; /* cache expire interval */
298 unsigned long ps_nextgc; /* next gc time */
299 unsigned long ps_flags;
303 int ptlrpcs_register(struct ptlrpc_sec_type *type);
304 int ptlrpcs_unregister(struct ptlrpc_sec_type *type);
306 struct ptlrpc_sec * ptlrpcs_sec_create(__u32 flavor,
308 struct obd_import *import,
309 const char *pipe_dir,
311 void ptlrpcs_sec_put(struct ptlrpc_sec *sec);
312 void ptlrpcs_sec_invalidate_cache(struct ptlrpc_sec *sec);
314 struct ptlrpc_cred * ptlrpcs_cred_lookup(struct ptlrpc_sec *sec,
315 struct vfs_cred *vcred);
316 void ptlrpcs_cred_put(struct ptlrpc_cred *cred, int sync);
318 static inline void ptlrpcs_cred_get(struct ptlrpc_cred *cred)
320 LASSERT(atomic_read(&cred->pc_refcount));
321 atomic_inc(&cred->pc_refcount);
324 static inline int ptlrpcs_cred_refresh(struct ptlrpc_cred *cred)
327 LASSERT(atomic_read(&cred->pc_refcount));
328 LASSERT(cred->pc_ops);
329 LASSERT(cred->pc_ops->refresh);
330 return cred->pc_ops->refresh(cred);
333 static inline int ptlrpcs_cred_is_uptodate(struct ptlrpc_cred *cred)
336 return ((cred->pc_flags & PTLRPC_CRED_FLAGS_MASK) ==
337 PTLRPC_CRED_UPTODATE);
340 static inline int ptlrpcs_cred_is_dead(struct ptlrpc_cred *cred)
343 return ((cred->pc_flags & (PTLRPC_CRED_DEAD | PTLRPC_CRED_ERROR)) != 0);
346 #define ptlrpcs_cred_expire(cred) \
347 if (!test_and_set_bit(PTLRPC_CRED_DEAD_BIT, &cred->pc_flags)) { \
348 CWARN("cred %p: get expired\n", cred); \
349 clear_bit(PTLRPC_CRED_UPTODATE_BIT, &cred->pc_flags); \
352 static inline int ptlrpcs_cred_check_uptodate(struct ptlrpc_cred *cred)
354 LASSERT(atomic_read(&cred->pc_refcount));
356 if (!ptlrpcs_cred_is_uptodate(cred))
359 if (cred->pc_expire == 0)
361 if (time_after(cred->pc_expire, get_seconds()))
363 ptlrpcs_cred_expire(cred);
367 static inline int ptlrpcs_est_req_payload(struct ptlrpc_request *req,
370 struct ptlrpc_sec *sec = req->rq_cred->pc_sec;
371 struct ptlrpc_secops *ops;
374 LASSERT(sec->ps_type);
375 LASSERT(sec->ps_type->pst_ops);
377 ops = sec->ps_type->pst_ops;
378 if (ops->est_req_payload)
379 return ops->est_req_payload(sec, req, datasize);
384 static inline int ptlrpcs_est_rep_payload(struct ptlrpc_request *req,
387 struct ptlrpc_sec *sec = req->rq_cred->pc_sec;
388 struct ptlrpc_secops *ops;
391 LASSERT(sec->ps_type);
392 LASSERT(sec->ps_type->pst_ops);
394 ops = sec->ps_type->pst_ops;
395 if (ops->est_rep_payload)
396 return ops->est_rep_payload(sec, req, datasize);
401 static inline int add_deny_security(char *sec, struct list_head *head)
403 deny_sec_t *p_deny_sec = NULL;
406 LASSERT(sec != NULL);
408 OBD_ALLOC(p_deny_sec, sizeof(*p_deny_sec));
409 if (p_deny_sec == NULL)
412 p_deny_sec->flavor = ptlrpcs_name2flavor(sec);
413 if (p_deny_sec->flavor == PTLRPCS_FLVR_INVALID) {
414 CERROR("unrecognized security type %s\n", (char*) sec);
419 list_add_tail(&p_deny_sec->list, head);
423 OBD_FREE(p_deny_sec, sizeof(*p_deny_sec));
428 int ptlrpcs_cli_wrap_request(struct ptlrpc_request *req);
429 int ptlrpcs_cli_unwrap_reply(struct ptlrpc_request *req);
430 int ptlrpcs_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize);
431 int ptlrpcs_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize);
432 void ptlrpcs_cli_free_reqbuf(struct ptlrpc_request *req);
433 void ptlrpcs_cli_free_repbuf(struct ptlrpc_request *req);
435 /* higher interface */
436 int ptlrpcs_import_get_sec(struct obd_import *imp);
437 void ptlrpcs_import_drop_sec(struct obd_import *imp);
438 void ptlrpcs_import_flush_current_creds(struct obd_import *imp);
439 int ptlrpcs_req_get_cred(struct ptlrpc_request *req);
440 void ptlrpcs_req_drop_cred(struct ptlrpc_request *req);
441 int ptlrpcs_req_replace_dead_cred(struct ptlrpc_request *req);
442 int ptlrpcs_req_refresh_cred(struct ptlrpc_request *req);
443 int ptlrpcs_check_cred(struct obd_import *imp);
445 /* internal helpers */
446 int sec_alloc_reqbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
447 int msgsize, int secsize);
448 void sec_free_reqbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req);
451 int ptlrpcs_null_init(void);
452 int ptlrpcs_null_exit(void);
454 /**********************************************************
456 **********************************************************/
458 struct ptlrpc_reply_state;
460 struct ptlrpc_svcsec {
461 struct module *pss_owner;
463 __u32 pss_flavor; /* major flavor */
466 int (*accept) (struct ptlrpc_request *req,
467 enum ptlrpcs_error *res);
468 int (*authorize) (struct ptlrpc_request *req);
469 int (*alloc_repbuf)(struct ptlrpc_svcsec *svcsec,
470 struct ptlrpc_request *req,
472 void (*free_repbuf) (struct ptlrpc_svcsec *svcsec,
473 struct ptlrpc_reply_state *rs);
474 void (*cleanup_req) (struct ptlrpc_svcsec *svcsec,
475 struct ptlrpc_request *req);
479 #define SVC_COMPLETE 2
484 int svcsec_register(struct ptlrpc_svcsec *ss);
485 int svcsec_unregister(struct ptlrpc_svcsec *ss);
486 int svcsec_accept(struct ptlrpc_request *req, enum ptlrpcs_error *res);
487 int svcsec_authorize(struct ptlrpc_request *req);
488 int svcsec_alloc_repbuf(struct ptlrpc_svcsec *svcsec,
489 struct ptlrpc_request *req, int msgsize);
490 void svcsec_cleanup_req(struct ptlrpc_request *req);
492 struct ptlrpc_svcsec * svcsec_get(struct ptlrpc_svcsec *sec);
493 void svcsec_put(struct ptlrpc_svcsec *sec);
495 /* internal helpers */
496 int svcsec_alloc_reply_state(struct ptlrpc_request *req,
497 int msgsize, int secsize);
498 void svcsec_free_reply_state(struct ptlrpc_reply_state *rs);
501 int svcsec_null_init(void);
502 int svcsec_null_exit(void);
506 #include <linux/crypto.h>
509 #define NR_CAPAHASH 32
510 #define CAPA_TIMEOUT 1800 /* sec, == 30 min */
511 #define CAPA_KEY_TIMEOUT (24 * 60 * 60) /* sec, == 1 day */
512 #define CAPA_CACHE_SIZE 1000 /* for MDS & OST */
513 #define CAPA_HMAC_ALG "sha1"
516 #define CAPA_READ MAY_READ /* 2 */
517 #define CAPA_WRITE MAY_WRITE /* 4 */
520 struct lustre_capa_data {
521 __u32 lc_uid; /* uid, mapped uid */
522 __u32 lc_ruid; /* remote uid on client */
523 __u32 lc_op; /* operations allowed */
524 __u64 lc_ino; /* inode# */
525 __u32 lc_mdsid; /* mds# */
526 __u32 lc_keyid; /* key used for the capability */
527 __u64 lc_expiry; /* expiry time: servers have clocks */
528 __u32 lc_flags; /* security features for capability */
529 } __attribute__((packed));
532 struct inode *inode; /* this should be always valid
534 struct lustre_handle handle; /* handle of mds_file_data */
535 struct list_head lli_list; /* link to lli_capas */
536 #if 0 /* TODO: support multi mount point */
537 struct list_head *list; /* the capa list belong to this client */
538 struct timer_list *timer; /* timer belong to this client */
543 int bvalid; /* black key here valid or not */
544 __u32 bkeyid; /* black key id */
545 __u8 bhmac[CAPA_DIGEST_SIZE]; /* black key */
549 struct hlist_node c_hash;
550 struct list_head c_list;
552 struct lustre_capa c_capa; /* capa */
557 struct client_capa client;
558 struct filter_capa filter;
562 #define c_inode u.client.inode
563 #define c_handle u.client.handle
564 #define c_lli_list u.client.lli_list
565 #define c_bvalid u.filter.bvalid
566 #define c_bkeyid u.filter.bkeyid
567 #define c_bhmac u.filter.bhmac
569 enum lustre_capa_type {
575 #define DEBUG_CAPA(level, capa, fmt, args...) \
577 CDEBUG(level, fmt " capa@%p uid %u op %u ino "LPU64" mdsid %d keyid %d " \
578 "expiry "LPU64" flags %u\n", \
579 ##args, capa, (capa)->lc_uid, (capa)->lc_op, (capa)->lc_ino, \
580 (capa)->lc_mdsid, (capa)->lc_keyid, (capa)->lc_expiry, \
584 #define DEBUG_CAPA_KEY(level, key, fmt, args...) \
586 CDEBUG(level, fmt " capa key@%p mdsid %d keyid %d expiry "LPU64"\n", \
587 ##args, key, (key)->lk_mdsid, (key)->lk_keyid, (key)->lk_expiry); \
590 #define DEBUG_MDS_CAPA_KEY(level, mkey, fmt, args...) \
592 CDEBUG(level, fmt " capa key@%p mdsid %d keyid %d expiry "LPU64"\n", \
593 ##args, mkey, le32_to_cpu((mkey)->k_key->lk_mdsid), \
594 le32_to_cpu((mkey)->k_key->lk_keyid), \
595 le64_to_cpu((mkey)->k_key->lk_expiry)); \
598 extern spinlock_t capa_lock;
599 extern struct hlist_head *capa_hash;
600 extern struct list_head capa_list[];
601 extern struct timer_list ll_capa_timer;
603 /* obdclass/capa.c */
604 int capa_op(int flags);
605 void __capa_get(struct obd_capa *ocapa);
606 struct obd_capa *capa_get(uid_t uid, int capa_op, __u64 mdsid,
607 unsigned long ino, int type);
608 void capa_put(struct obd_capa *ocapa);
609 struct obd_capa *capa_renew(struct lustre_capa *capa, int type);
610 void capa_hmac(struct crypto_tfm *tfm, __u8 *key, struct lustre_capa *capa);
611 void capa_dup(void *dst, struct obd_capa *ocapa);
612 void capa_dup2(void *dst, struct lustre_capa *capa);
613 int capa_expired(struct lustre_capa *capa);
614 int __capa_is_to_expire(struct obd_capa *ocapa);
615 int capa_is_to_expire(struct obd_capa *ocapa);
617 #define CAPA_EXPIRY_SHIFT 10 /* 1024 sec */
618 #define CAPA_EXPIRY (1UL << CAPA_EXPIRY_SHIFT)
619 #define CAPA_EXPIRY_MASK (~(CAPA_EXPIRY-1))
621 #define CAPA_PRE_EXPIRY_NOROUND 3 /* sec */
622 #define CAPA_PRE_EXPIRY 300 /* sec */
624 /* struct lustre_capa.lc_flags */
625 #define CAPA_FL_NOROUND 0x001 /* capa expiry not rounded */
626 #define CAPA_FL_REMUID 0x002 /* remote uid */
627 #define CAPA_FL_TRUNC 0x004 /* truncate capa, this kind of capa won't be renewed */
629 static inline unsigned long capa_pre_expiry(struct lustre_capa *capa)
631 return (capa->lc_flags & CAPA_FL_NOROUND) ?
632 CAPA_PRE_EXPIRY_NOROUND : CAPA_PRE_EXPIRY;
636 round_expiry(__u32 timeout)
641 do_gettimeofday(&tv);
642 expiry = tv.tv_sec + timeout;
644 if (timeout > CAPA_EXPIRY)
645 expiry = (expiry + CAPA_EXPIRY - 1) & CAPA_EXPIRY_MASK;
651 capa_key_cmp(struct lustre_capa_key *k1, struct lustre_capa_key *k2)
653 return k1->lk_keyid - k2->lk_keyid;
656 static inline unsigned long
657 expiry_to_jiffies(__u64 expiry)
661 unsigned long timeout;
663 do_gettimeofday(&tv);
664 timeout = jiffies + ((unsigned long)expiry - tv.tv_sec) * HZ;
668 struct mds_capa_key {
669 struct list_head k_list;
671 struct lustre_capa_key *k_key;
672 struct obd_device *k_obd;
675 struct filter_capa_key {
676 struct list_head k_list;
677 struct lustre_capa_key k_key;
680 #endif /* __LINUX_SEC_H_ */