4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _LUSTRE_SEC_H_
38 #define _LUSTRE_SEC_H_
40 /** \defgroup sptlrpc sptlrpc
50 struct ptlrpc_request;
51 struct ptlrpc_reply_state;
52 struct ptlrpc_bulk_desc;
61 struct ptlrpc_sec_policy;
62 struct ptlrpc_sec_cops;
63 struct ptlrpc_sec_sops;
65 struct ptlrpc_svc_ctx;
66 struct ptlrpc_cli_ctx;
67 struct ptlrpc_ctx_ops;
70 * \addtogroup flavor flavor
72 * RPC flavor is represented by a 32 bits integer. Currently the high 12 bits
73 * are unused, must be set to 0 for future expansion.
75 * ------------------------------------------------------------------------
76 * | 4b (bulk svc) | 4b (bulk type) | 4b (svc) | 4b (mech) | 4b (policy) |
77 * ------------------------------------------------------------------------
87 SPTLRPC_POLICY_NULL = 0,
88 SPTLRPC_POLICY_PLAIN = 1,
89 SPTLRPC_POLICY_GSS = 2,
93 enum sptlrpc_mech_null {
94 SPTLRPC_MECH_NULL = 0,
95 SPTLRPC_MECH_NULL_MAX,
98 enum sptlrpc_mech_plain {
99 SPTLRPC_MECH_PLAIN = 0,
100 SPTLRPC_MECH_PLAIN_MAX,
103 enum sptlrpc_mech_gss {
104 SPTLRPC_MECH_GSS_NULL = 0,
105 SPTLRPC_MECH_GSS_KRB5 = 1,
106 SPTLRPC_MECH_GSS_MAX,
109 enum sptlrpc_service_type {
110 SPTLRPC_SVC_NULL = 0, /**< no security */
111 SPTLRPC_SVC_AUTH = 1, /**< authentication only */
112 SPTLRPC_SVC_INTG = 2, /**< integrity */
113 SPTLRPC_SVC_PRIV = 3, /**< privacy */
117 enum sptlrpc_bulk_type {
118 SPTLRPC_BULK_DEFAULT = 0, /**< follow rpc flavor */
119 SPTLRPC_BULK_HASH = 1, /**< hash integrity */
123 enum sptlrpc_bulk_service {
124 SPTLRPC_BULK_SVC_NULL = 0, /**< no security */
125 SPTLRPC_BULK_SVC_AUTH = 1, /**< authentication only */
126 SPTLRPC_BULK_SVC_INTG = 2, /**< integrity */
127 SPTLRPC_BULK_SVC_PRIV = 3, /**< privacy */
128 SPTLRPC_BULK_SVC_MAX,
132 * compose/extract macros
134 #define FLVR_POLICY_OFFSET (0)
135 #define FLVR_MECH_OFFSET (4)
136 #define FLVR_SVC_OFFSET (8)
137 #define FLVR_BULK_TYPE_OFFSET (12)
138 #define FLVR_BULK_SVC_OFFSET (16)
140 #define MAKE_FLVR(policy, mech, svc, btype, bsvc) \
141 (((__u32)(policy) << FLVR_POLICY_OFFSET) | \
142 ((__u32)(mech) << FLVR_MECH_OFFSET) | \
143 ((__u32)(svc) << FLVR_SVC_OFFSET) | \
144 ((__u32)(btype) << FLVR_BULK_TYPE_OFFSET) | \
145 ((__u32)(bsvc) << FLVR_BULK_SVC_OFFSET))
150 #define SPTLRPC_FLVR_POLICY(flavor) \
151 ((((__u32)(flavor)) >> FLVR_POLICY_OFFSET) & 0xF)
152 #define SPTLRPC_FLVR_MECH(flavor) \
153 ((((__u32)(flavor)) >> FLVR_MECH_OFFSET) & 0xF)
154 #define SPTLRPC_FLVR_SVC(flavor) \
155 ((((__u32)(flavor)) >> FLVR_SVC_OFFSET) & 0xF)
156 #define SPTLRPC_FLVR_BULK_TYPE(flavor) \
157 ((((__u32)(flavor)) >> FLVR_BULK_TYPE_OFFSET) & 0xF)
158 #define SPTLRPC_FLVR_BULK_SVC(flavor) \
159 ((((__u32)(flavor)) >> FLVR_BULK_SVC_OFFSET) & 0xF)
161 #define SPTLRPC_FLVR_BASE(flavor) \
162 ((((__u32)(flavor)) >> FLVR_POLICY_OFFSET) & 0xFFF)
163 #define SPTLRPC_FLVR_BASE_SUB(flavor) \
164 ((((__u32)(flavor)) >> FLVR_MECH_OFFSET) & 0xFF)
169 #define MAKE_BASE_SUBFLVR(mech, svc) \
171 ((__u32)(svc) << (FLVR_SVC_OFFSET - FLVR_MECH_OFFSET)))
173 #define SPTLRPC_SUBFLVR_KRB5N \
174 MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_NULL)
175 #define SPTLRPC_SUBFLVR_KRB5A \
176 MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_AUTH)
177 #define SPTLRPC_SUBFLVR_KRB5I \
178 MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_INTG)
179 #define SPTLRPC_SUBFLVR_KRB5P \
180 MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_PRIV)
185 #define SPTLRPC_FLVR_NULL \
186 MAKE_FLVR(SPTLRPC_POLICY_NULL, \
189 SPTLRPC_BULK_DEFAULT, \
190 SPTLRPC_BULK_SVC_NULL)
191 #define SPTLRPC_FLVR_PLAIN \
192 MAKE_FLVR(SPTLRPC_POLICY_PLAIN, \
193 SPTLRPC_MECH_PLAIN, \
196 SPTLRPC_BULK_SVC_INTG)
197 #define SPTLRPC_FLVR_KRB5N \
198 MAKE_FLVR(SPTLRPC_POLICY_GSS, \
199 SPTLRPC_MECH_GSS_KRB5, \
201 SPTLRPC_BULK_DEFAULT, \
202 SPTLRPC_BULK_SVC_NULL)
203 #define SPTLRPC_FLVR_KRB5A \
204 MAKE_FLVR(SPTLRPC_POLICY_GSS, \
205 SPTLRPC_MECH_GSS_KRB5, \
207 SPTLRPC_BULK_DEFAULT, \
208 SPTLRPC_BULK_SVC_NULL)
209 #define SPTLRPC_FLVR_KRB5I \
210 MAKE_FLVR(SPTLRPC_POLICY_GSS, \
211 SPTLRPC_MECH_GSS_KRB5, \
213 SPTLRPC_BULK_DEFAULT, \
214 SPTLRPC_BULK_SVC_INTG)
215 #define SPTLRPC_FLVR_KRB5P \
216 MAKE_FLVR(SPTLRPC_POLICY_GSS, \
217 SPTLRPC_MECH_GSS_KRB5, \
219 SPTLRPC_BULK_DEFAULT, \
220 SPTLRPC_BULK_SVC_PRIV)
222 #define SPTLRPC_FLVR_DEFAULT SPTLRPC_FLVR_NULL
224 #define SPTLRPC_FLVR_INVALID ((__u32) 0xFFFFFFFF)
225 #define SPTLRPC_FLVR_ANY ((__u32) 0xFFF00000)
228 * extract the useful part from wire flavor
230 #define WIRE_FLVR(wflvr) (((__u32) (wflvr)) & 0x000FFFFF)
234 static inline void flvr_set_svc(__u32 *flvr, __u32 svc)
236 LASSERT(svc < SPTLRPC_SVC_MAX);
237 *flvr = MAKE_FLVR(SPTLRPC_FLVR_POLICY(*flvr),
238 SPTLRPC_FLVR_MECH(*flvr),
240 SPTLRPC_FLVR_BULK_TYPE(*flvr),
241 SPTLRPC_FLVR_BULK_SVC(*flvr));
244 static inline void flvr_set_bulk_svc(__u32 *flvr, __u32 svc)
246 LASSERT(svc < SPTLRPC_BULK_SVC_MAX);
247 *flvr = MAKE_FLVR(SPTLRPC_FLVR_POLICY(*flvr),
248 SPTLRPC_FLVR_MECH(*flvr),
249 SPTLRPC_FLVR_SVC(*flvr),
250 SPTLRPC_FLVR_BULK_TYPE(*flvr),
254 struct bulk_spec_hash {
259 * Full description of flavors being used on a ptlrpc connection, include
260 * both regular RPC and bulk transfer parts.
262 struct sptlrpc_flavor {
264 * wire flavor, should be renamed to sf_wire.
268 * general flags of PTLRPC_SEC_FL_*
272 * rpc flavor specification
275 /* nothing for now */
278 * bulk flavor specification
281 struct bulk_spec_hash hash;
286 * identify the RPC is generated from what part of Lustre. It's encoded into
287 * RPC requests and to be checked by ptlrpc service.
289 enum lustre_sec_part {
298 enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd);
301 * A rule specifies a flavor to be used by a ptlrpc connection between
304 struct sptlrpc_rule {
305 __u32 sr_netid; /* LNET network ID */
306 __u8 sr_from; /* sec_part */
307 __u8 sr_to; /* sec_part */
309 struct sptlrpc_flavor sr_flvr;
313 * A set of rules in memory.
315 * Rules are generated and stored on MGS, and propagated to MDT, OST,
316 * and client when needed.
318 struct sptlrpc_rule_set {
321 struct sptlrpc_rule *srs_rules;
324 int sptlrpc_parse_flavor(const char *str, struct sptlrpc_flavor *flvr);
325 bool sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr);
327 static inline void sptlrpc_rule_set_init(struct sptlrpc_rule_set *set)
329 memset(set, 0, sizeof(*set));
332 int sptlrpc_process_config(struct lustre_cfg *lcfg);
333 void sptlrpc_conf_log_start(const char *logname);
334 void sptlrpc_conf_log_stop(const char *logname);
335 void sptlrpc_conf_log_update_begin(const char *logname);
336 void sptlrpc_conf_log_update_end(const char *logname);
337 void sptlrpc_conf_client_adapt(struct obd_device *obd);
339 /* The maximum length of security payload. 1024 is enough for Kerberos 5,
340 * and should be enough for other future mechanisms but not sure.
341 * Only used by pre-allocated request/reply pool.
343 #define SPTLRPC_MAX_PAYLOAD (1024)
350 struct ptlrpc_ctx_ops {
352 * To determine whether it's suitable to use the \a ctx for \a vcred.
354 int (*match)(struct ptlrpc_cli_ctx *ctx, struct vfs_cred *vcred);
357 * To bring the \a ctx uptodate.
359 int (*refresh)(struct ptlrpc_cli_ctx *ctx);
362 * Validate the \a ctx.
364 int (*validate)(struct ptlrpc_cli_ctx *ctx);
367 * Force the \a ctx to die.
369 void (*force_die)(struct ptlrpc_cli_ctx *ctx, int grace);
370 int (*display)(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize);
373 * Sign the request message using \a ctx.
375 * \pre req->rq_reqmsg point to request message.
376 * \pre req->rq_reqlen is the request message length.
377 * \post req->rq_reqbuf point to request message with signature.
378 * \post req->rq_reqdata_len is set to the final request message size.
380 * \see null_ctx_sign(), plain_ctx_sign(), gss_cli_ctx_sign().
382 int (*sign)(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
385 * Verify the reply message using \a ctx.
387 * \pre req->rq_repdata point to reply message with signature.
388 * \pre req->rq_repdata_len is the total reply message length.
389 * \post req->rq_repmsg point to reply message without signature.
390 * \post req->rq_replen is the reply message length.
392 * \see null_ctx_verify(), plain_ctx_verify(), gss_cli_ctx_verify().
394 int (*verify)(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
397 * Encrypt the request message using \a ctx.
399 * \pre req->rq_reqmsg point to request message in clear text.
400 * \pre req->rq_reqlen is the request message length.
401 * \post req->rq_reqbuf point to request message.
402 * \post req->rq_reqdata_len is set to the final request message size.
404 * \see gss_cli_ctx_seal().
406 int (*seal)(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
409 * Decrypt the reply message using \a ctx.
411 * \pre req->rq_repdata point to encrypted reply message.
412 * \pre req->rq_repdata_len is the total cipher text length.
413 * \post req->rq_repmsg point to reply message in clear text.
414 * \post req->rq_replen is the reply message length in clear text.
416 * \see gss_cli_ctx_unseal().
418 int (*unseal)(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
421 * Wrap bulk request data. This is called before wrapping RPC
424 * \pre bulk buffer is descripted by desc->bd_iov and
425 * desc->bd_iov_count. note for read it's just buffer, no data
426 * need to be sent; for write it contains data in clear text.
427 * \post when necessary, ptlrpc_bulk_sec_desc was properly prepared
428 * (usually inside of RPC request message).
429 * - encryption: cipher text bulk buffer is descripted by
430 * desc->bd_enc_iov and desc->bd_iov_count (currently assume iov
431 * count remains the same).
432 * - otherwise: bulk buffer is still desc->bd_iov and
433 * desc->bd_iov_count.
435 * \return 0: success.
436 * \return -ev: error code.
438 * \see plain_cli_wrap_bulk(), gss_cli_ctx_wrap_bulk().
440 int (*wrap_bulk)(struct ptlrpc_cli_ctx *ctx,
441 struct ptlrpc_request *req,
442 struct ptlrpc_bulk_desc *desc);
445 * Unwrap bulk reply data. This is called after wrapping RPC
448 * \pre bulk buffer is descripted by desc->bd_iov/desc->bd_enc_iov and
449 * desc->bd_iov_count, according to wrap_bulk().
450 * \post final bulk data in clear text is placed in buffer described
451 * by desc->bd_iov and desc->bd_iov_count.
452 * \return +ve nob of actual bulk data in clear text.
453 * \return -ve error code.
455 * \see plain_cli_unwrap_bulk(), gss_cli_ctx_unwrap_bulk().
457 int (*unwrap_bulk)(struct ptlrpc_cli_ctx *ctx,
458 struct ptlrpc_request *req,
459 struct ptlrpc_bulk_desc *desc);
462 #define PTLRPC_CTX_NEW_BIT (0) /* newly created */
463 #define PTLRPC_CTX_UPTODATE_BIT (1) /* uptodate */
464 #define PTLRPC_CTX_DEAD_BIT (2) /* mark expired gracefully */
465 #define PTLRPC_CTX_ERROR_BIT (3) /* fatal error (refresh, etc.) */
466 #define PTLRPC_CTX_CACHED_BIT (8) /* in ctx cache (hash etc.) */
467 #define PTLRPC_CTX_ETERNAL_BIT (9) /* always valid */
469 #define PTLRPC_CTX_NEW (1 << PTLRPC_CTX_NEW_BIT)
470 #define PTLRPC_CTX_UPTODATE (1 << PTLRPC_CTX_UPTODATE_BIT)
471 #define PTLRPC_CTX_DEAD (1 << PTLRPC_CTX_DEAD_BIT)
472 #define PTLRPC_CTX_ERROR (1 << PTLRPC_CTX_ERROR_BIT)
473 #define PTLRPC_CTX_CACHED (1 << PTLRPC_CTX_CACHED_BIT)
474 #define PTLRPC_CTX_ETERNAL (1 << PTLRPC_CTX_ETERNAL_BIT)
476 #define PTLRPC_CTX_STATUS_MASK (PTLRPC_CTX_NEW_BIT | \
477 PTLRPC_CTX_UPTODATE | \
481 struct ptlrpc_cli_ctx {
482 struct hlist_node cc_cache; /* linked into ctx cache */
483 atomic_t cc_refcount;
484 struct ptlrpc_sec *cc_sec;
485 struct ptlrpc_ctx_ops *cc_ops;
486 unsigned long cc_expire; /* in seconds */
487 unsigned int cc_early_expire:1;
488 unsigned long cc_flags;
489 struct vfs_cred cc_vcred;
491 struct list_head cc_req_list; /* waiting reqs linked here */
492 struct list_head cc_gc_chain; /* linked to gc chain */
496 * client side policy operation vector.
498 struct ptlrpc_sec_cops {
500 * Given an \a imp, create and initialize a ptlrpc_sec structure.
501 * \param ctx service context:
502 * - regular import: \a ctx should be NULL;
503 * - reverse import: \a ctx is obtained from incoming request.
504 * \param flavor specify what flavor to use.
506 * When necessary, policy module is responsible for taking reference
509 * \see null_create_sec(), plain_create_sec(), gss_sec_create_kr().
511 struct ptlrpc_sec *(*create_sec)(struct obd_import *imp,
512 struct ptlrpc_svc_ctx *ctx,
513 struct sptlrpc_flavor *flavor);
516 * Destructor of ptlrpc_sec. When called, refcount has been dropped
517 * to 0 and all contexts has been destroyed.
519 * \see null_destroy_sec(), plain_destroy_sec(), gss_sec_destroy_kr().
521 void (*destroy_sec)(struct ptlrpc_sec *sec);
524 * Notify that this ptlrpc_sec is going to die. Optionally, policy
525 * module is supposed to set sec->ps_dying and whatever necessary
528 * \see plain_kill_sec(), gss_sec_kill().
530 void (*kill_sec)(struct ptlrpc_sec *sec);
533 * Given \a vcred, lookup and/or create its context. The policy module
534 * is supposed to maintain its own context cache.
535 * XXX currently \a create and \a remove_dead is always 1, perhaps
536 * should be removed completely.
538 * \see null_lookup_ctx(), plain_lookup_ctx(), gss_sec_lookup_ctx_kr().
540 struct ptlrpc_cli_ctx *(*lookup_ctx)(struct ptlrpc_sec *sec,
541 struct vfs_cred *vcred,
542 int create, int remove_dead);
545 * Called then the reference of \a ctx dropped to 0. The policy module
546 * is supposed to destroy this context or whatever else according to
547 * its cache maintenance mechanism.
549 * \param sync if zero, we shouldn't wait for the context being
550 * destroyed completely.
552 * \see plain_release_ctx(), gss_sec_release_ctx_kr().
554 void (*release_ctx)(struct ptlrpc_sec *sec, struct ptlrpc_cli_ctx *ctx,
558 * Flush the context cache.
560 * \param uid context of which user, -1 means all contexts.
561 * \param grace if zero, the PTLRPC_CTX_UPTODATE_BIT of affected
562 * contexts should be cleared immediately.
563 * \param force if zero, only idle contexts will be flushed.
565 * \see plain_flush_ctx_cache(), gss_sec_flush_ctx_cache_kr().
567 int (*flush_ctx_cache)(struct ptlrpc_sec *sec, uid_t uid,
568 int grace, int force);
571 * Called periodically by garbage collector to remove dead contexts
574 * \see gss_sec_gc_ctx_kr().
576 void (*gc_ctx)(struct ptlrpc_sec *sec);
579 * Given an context \a ctx, install a corresponding reverse service
580 * context on client side.
581 * XXX currently it's only used by GSS module, maybe we should remove
582 * this from general API.
584 int (*install_rctx)(struct obd_import *imp, struct ptlrpc_sec *sec,
585 struct ptlrpc_cli_ctx *ctx);
588 * To allocate request buffer for \a req.
590 * \pre req->rq_reqmsg == NULL.
591 * \pre req->rq_reqbuf == NULL, otherwise it must be pre-allocated,
592 * we are not supposed to free it.
593 * \post if success, req->rq_reqmsg point to a buffer with size
594 * at least \a lustre_msg_size.
596 * \see null_alloc_reqbuf(), plain_alloc_reqbuf(), gss_alloc_reqbuf().
598 int (*alloc_reqbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
599 int lustre_msg_size);
602 * To free request buffer for \a req.
604 * \pre req->rq_reqbuf != NULL.
606 * \see null_free_reqbuf(), plain_free_reqbuf(), gss_free_reqbuf().
608 void (*free_reqbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req);
611 * To allocate reply buffer for \a req.
613 * \pre req->rq_repbuf == NULL.
614 * \post if success, req->rq_repbuf point to a buffer with size
615 * req->rq_repbuf_len, the size should be large enough to receive
616 * reply which be transformed from \a lustre_msg_size of clear text.
618 * \see null_alloc_repbuf(), plain_alloc_repbuf(), gss_alloc_repbuf().
620 int (*alloc_repbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
621 int lustre_msg_size);
624 * To free reply buffer for \a req.
626 * \pre req->rq_repbuf != NULL.
627 * \post req->rq_repbuf == NULL.
628 * \post req->rq_repbuf_len == 0.
630 * \see null_free_repbuf(), plain_free_repbuf(), gss_free_repbuf().
632 void (*free_repbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req);
635 * To expand the request buffer of \a req, thus the \a segment in
636 * the request message pointed by req->rq_reqmsg can accommodate
637 * at least \a newsize of data.
639 * \pre req->rq_reqmsg->lm_buflens[segment] < newsize.
641 * \see null_enlarge_reqbuf(), plain_enlarge_reqbuf(),
642 * gss_enlarge_reqbuf().
644 int (*enlarge_reqbuf)(struct ptlrpc_sec *sec,
645 struct ptlrpc_request *req,
646 int segment, int newsize);
650 int (*display)(struct ptlrpc_sec *sec, struct seq_file *seq);
654 * server side policy operation vector.
656 struct ptlrpc_sec_sops {
658 * verify an incoming request.
660 * \pre request message is pointed by req->rq_reqbuf, size is
661 * req->rq_reqdata_len; and the message has been unpacked to
664 * \retval SECSVC_OK success, req->rq_reqmsg point to request message
665 * in clear text, size is req->rq_reqlen; req->rq_svc_ctx is set;
666 * req->rq_sp_from is decoded from request.
667 * \retval SECSVC_COMPLETE success, the request has been fully
668 * processed, and reply message has been prepared; req->rq_sp_from is
669 * decoded from request.
670 * \retval SECSVC_DROP failed, this request should be dropped.
672 * \see null_accept(), plain_accept(), gss_svc_accept_kr().
674 int (*accept)(struct ptlrpc_request *req);
677 * Perform security transformation upon reply message.
679 * \pre reply message is pointed by req->rq_reply_state->rs_msg, size
681 * \post req->rs_repdata_len is the final message size.
682 * \post req->rq_reply_off is set.
684 * \see null_authorize(), plain_authorize(), gss_svc_authorize().
686 int (*authorize)(struct ptlrpc_request *req);
689 * Invalidate server context \a ctx.
691 * \see gss_svc_invalidate_ctx().
693 void (*invalidate_ctx)(struct ptlrpc_svc_ctx *ctx);
696 * Allocate a ptlrpc_reply_state.
698 * \param msgsize size of the reply message in clear text.
699 * \pre if req->rq_reply_state != NULL, then it's pre-allocated, we
700 * should simply use it; otherwise we'll responsible for allocating
702 * \post req->rq_reply_state != NULL;
703 * \post req->rq_reply_state->rs_msg != NULL;
705 * \see null_alloc_rs(), plain_alloc_rs(), gss_svc_alloc_rs().
707 int (*alloc_rs)(struct ptlrpc_request *req, int msgsize);
710 * Free a ptlrpc_reply_state.
712 void (*free_rs)(struct ptlrpc_reply_state *rs);
715 * Release the server context \a ctx.
717 * \see gss_svc_free_ctx().
719 void (*free_ctx)(struct ptlrpc_svc_ctx *ctx);
722 * Install a reverse context based on the server context \a ctx.
724 * \see gss_svc_install_rctx_kr().
726 int (*install_rctx)(struct obd_import *imp, struct ptlrpc_svc_ctx *ctx);
729 * Prepare buffer for incoming bulk write.
731 * \pre desc->bd_iov and desc->bd_iov_count describes the buffer
732 * intended to receive the write.
734 * \see gss_svc_prep_bulk().
736 int (*prep_bulk)(struct ptlrpc_request *req,
737 struct ptlrpc_bulk_desc *desc);
740 * Unwrap the bulk write data.
742 * \see plain_svc_unwrap_bulk(), gss_svc_unwrap_bulk().
744 int (*unwrap_bulk)(struct ptlrpc_request *req,
745 struct ptlrpc_bulk_desc *desc);
748 * Wrap the bulk read data.
750 * \see plain_svc_wrap_bulk(), gss_svc_wrap_bulk().
752 int (*wrap_bulk)(struct ptlrpc_request *req,
753 struct ptlrpc_bulk_desc *desc);
756 struct ptlrpc_sec_policy {
757 struct module *sp_owner;
759 __u16 sp_policy; /* policy number */
760 struct ptlrpc_sec_cops *sp_cops; /* client ops */
761 struct ptlrpc_sec_sops *sp_sops; /* server ops */
764 #define PTLRPC_SEC_FL_REVERSE 0x0001 /* reverse sec */
765 #define PTLRPC_SEC_FL_ROOTONLY 0x0002 /* treat everyone as root */
766 #define PTLRPC_SEC_FL_UDESC 0x0004 /* ship udesc */
767 #define PTLRPC_SEC_FL_BULK 0x0008 /* intensive bulk i/o expected */
768 #define PTLRPC_SEC_FL_PAG 0x0010 /* PAG mode */
771 * The ptlrpc_sec represents the client side ptlrpc security facilities,
772 * each obd_import (both regular and reverse import) must associate with
775 * \see sptlrpc_import_sec_adapt().
778 struct ptlrpc_sec_policy *ps_policy;
779 atomic_t ps_refcount;
780 /** statistic only */
782 /** unique identifier */
784 struct sptlrpc_flavor ps_flvr;
785 enum lustre_sec_part ps_part;
786 /** after set, no more new context will be created */
787 unsigned int ps_dying:1;
789 struct obd_import *ps_import;
795 struct list_head ps_gc_list;
796 unsigned long ps_gc_interval; /* in seconds */
797 time64_t ps_gc_next; /* in seconds */
800 static inline int sec_is_reverse(struct ptlrpc_sec *sec)
802 return (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE);
805 static inline int sec_is_rootonly(struct ptlrpc_sec *sec)
807 return (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_ROOTONLY);
810 struct ptlrpc_svc_ctx {
811 atomic_t sc_refcount;
812 struct ptlrpc_sec_policy *sc_policy;
816 * user identity descriptor
818 #define LUSTRE_MAX_GROUPS (128)
820 struct ptlrpc_user_desc {
833 enum sptlrpc_bulk_hash_alg {
834 BULK_HASH_ALG_NULL = 0,
835 BULK_HASH_ALG_ADLER32,
839 BULK_HASH_ALG_SHA256,
840 BULK_HASH_ALG_SHA384,
841 BULK_HASH_ALG_SHA512,
845 const char *sptlrpc_get_hash_name(__u8 hash_alg);
846 __u8 sptlrpc_get_hash_alg(const char *algname);
852 struct ptlrpc_bulk_sec_desc {
853 __u8 bsd_version; /* 0 */
854 __u8 bsd_type; /* SPTLRPC_BULK_XXX */
855 __u8 bsd_svc; /* SPTLRPC_BULK_SVC_XXXX */
856 __u8 bsd_flags; /* flags */
857 __u32 bsd_nob; /* nob of bulk data */
858 __u8 bsd_data[0]; /* policy-specific token */
862 * round size up to next power of 2, for slab allocation.
863 * @size must be sane (can't overflow after round up)
865 static inline int size_roundup_power2(int size)
878 * internal support libraries
880 void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg,
881 int segment, int newsize);
886 int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy);
887 int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy);
889 __u32 sptlrpc_name2flavor_base(const char *name);
890 const char *sptlrpc_flavor2name_base(__u32 flvr);
891 char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf,
892 char *buf, int bufsize);
893 char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize);
896 struct ptlrpc_sec_policy *sptlrpc_policy_get(struct ptlrpc_sec_policy *policy)
898 __module_get(policy->sp_owner);
903 void sptlrpc_policy_put(struct ptlrpc_sec_policy *policy)
905 module_put(policy->sp_owner);
912 unsigned long cli_ctx_status(struct ptlrpc_cli_ctx *ctx)
914 return (ctx->cc_flags & PTLRPC_CTX_STATUS_MASK);
918 int cli_ctx_is_ready(struct ptlrpc_cli_ctx *ctx)
920 return (cli_ctx_status(ctx) == PTLRPC_CTX_UPTODATE);
924 int cli_ctx_is_refreshed(struct ptlrpc_cli_ctx *ctx)
926 return (cli_ctx_status(ctx) != 0);
930 int cli_ctx_is_uptodate(struct ptlrpc_cli_ctx *ctx)
932 return ((ctx->cc_flags & PTLRPC_CTX_UPTODATE) != 0);
936 int cli_ctx_is_error(struct ptlrpc_cli_ctx *ctx)
938 return ((ctx->cc_flags & PTLRPC_CTX_ERROR) != 0);
942 int cli_ctx_is_dead(struct ptlrpc_cli_ctx *ctx)
944 return ((ctx->cc_flags & (PTLRPC_CTX_DEAD | PTLRPC_CTX_ERROR)) != 0);
948 int cli_ctx_is_eternal(struct ptlrpc_cli_ctx *ctx)
950 return ((ctx->cc_flags & PTLRPC_CTX_ETERNAL) != 0);
956 void sptlrpc_sec_put(struct ptlrpc_sec *sec);
959 * internal apis which only used by policy implementation
961 int sptlrpc_get_next_secid(void);
964 * exported client context api
966 struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx);
967 void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync);
970 * exported client context wrap/buffers
972 int sptlrpc_cli_wrap_request(struct ptlrpc_request *req);
973 int sptlrpc_cli_unwrap_reply(struct ptlrpc_request *req);
974 int sptlrpc_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize);
975 void sptlrpc_cli_free_reqbuf(struct ptlrpc_request *req);
976 int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize);
977 void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req);
978 int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req,
979 int segment, int newsize);
980 int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req,
981 struct ptlrpc_request **req_ret);
982 void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req);
984 void sptlrpc_request_out_callback(struct ptlrpc_request *req);
987 * exported higher interface of import & request
989 int sptlrpc_import_sec_adapt(struct obd_import *imp,
990 struct ptlrpc_svc_ctx *ctx,
991 struct sptlrpc_flavor *flvr);
992 struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp);
993 void sptlrpc_import_sec_put(struct obd_import *imp);
995 int sptlrpc_import_check_ctx(struct obd_import *imp);
996 void sptlrpc_import_flush_root_ctx(struct obd_import *imp);
997 void sptlrpc_import_flush_my_ctx(struct obd_import *imp);
998 void sptlrpc_import_flush_all_ctx(struct obd_import *imp);
999 int sptlrpc_req_get_ctx(struct ptlrpc_request *req);
1000 void sptlrpc_req_put_ctx(struct ptlrpc_request *req, int sync);
1001 int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout);
1002 void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode);
1005 void sptlrpc_gc_add_sec(struct ptlrpc_sec *sec);
1006 void sptlrpc_gc_del_sec(struct ptlrpc_sec *sec);
1009 const char *sec2target_str(struct ptlrpc_sec *sec);
1013 int sptlrpc_lprocfs_cliobd_attach(struct obd_device *dev);
1018 enum secsvc_accept_res {
1024 int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req);
1025 int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req, int msglen);
1026 int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req);
1027 void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs);
1028 void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req);
1029 void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req);
1031 int sptlrpc_target_export_check(struct obd_export *exp,
1032 struct ptlrpc_request *req);
1034 /* bulk security api */
1035 void sptlrpc_enc_pool_put_pages(struct ptlrpc_bulk_desc *desc);
1037 int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req,
1038 struct ptlrpc_bulk_desc *desc);
1039 int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req,
1040 struct ptlrpc_bulk_desc *desc,
1042 int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req,
1043 struct ptlrpc_bulk_desc *desc);
1045 /* bulk helpers (internal use only by policies) */
1046 int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg,
1047 void *buf, int buflen);
1049 int bulk_sec_desc_unpack(struct lustre_msg *msg, int offset, int swabbed);
1051 /* user descriptor helpers */
1052 static inline int sptlrpc_user_desc_size(int ngroups)
1054 return sizeof(struct ptlrpc_user_desc) + ngroups * sizeof(__u32);
1057 int sptlrpc_current_user_desc_size(void);
1058 int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset);
1059 int sptlrpc_unpack_user_desc(struct lustre_msg *req, int offset, int swabbed);
1061 #define CFS_CAP_CHOWN_MASK (1 << CFS_CAP_CHOWN)
1062 #define CFS_CAP_SYS_RESOURCE_MASK (1 << CFS_CAP_SYS_RESOURCE)
1065 LUSTRE_SEC_NONE = 0,
1066 LUSTRE_SEC_REMOTE = 1,
1067 LUSTRE_SEC_SPECIFY = 2,
1073 #endif /* _LUSTRE_SEC_H_ */