1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Author: Eric Mei <ericm@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_SEC
46 #include <libcfs/libcfs.h>
48 #include <liblustre.h>
49 #include <libcfs/list.h>
51 #include <linux/crypto.h>
52 #include <linux/key.h>
56 #include <obd_class.h>
57 #include <obd_support.h>
58 #include <lustre_net.h>
59 #include <lustre_import.h>
60 #include <lustre_dlm.h>
61 #include <lustre_sec.h>
63 #include "ptlrpc_internal.h"
65 /***********************************************
67 ***********************************************/
69 static rwlock_t policy_lock;
70 static struct ptlrpc_sec_policy *policies[SPTLRPC_POLICY_MAX] = {
74 int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy)
76 __u16 number = policy->sp_policy;
78 LASSERT(policy->sp_name);
79 LASSERT(policy->sp_cops);
80 LASSERT(policy->sp_sops);
82 if (number >= SPTLRPC_POLICY_MAX)
85 write_lock(&policy_lock);
86 if (unlikely(policies[number])) {
87 write_unlock(&policy_lock);
90 policies[number] = policy;
91 write_unlock(&policy_lock);
93 CDEBUG(D_SEC, "%s: registered\n", policy->sp_name);
96 EXPORT_SYMBOL(sptlrpc_register_policy);
98 int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy)
100 __u16 number = policy->sp_policy;
102 LASSERT(number < SPTLRPC_POLICY_MAX);
104 write_lock(&policy_lock);
105 if (unlikely(policies[number] == NULL)) {
106 write_unlock(&policy_lock);
107 CERROR("%s: already unregistered\n", policy->sp_name);
111 LASSERT(policies[number] == policy);
112 policies[number] = NULL;
113 write_unlock(&policy_lock);
115 CDEBUG(D_SEC, "%s: unregistered\n", policy->sp_name);
118 EXPORT_SYMBOL(sptlrpc_unregister_policy);
121 struct ptlrpc_sec_policy * sptlrpc_wireflavor2policy(__u32 flavor)
123 static DECLARE_MUTEX(load_mutex);
124 static atomic_t loaded = ATOMIC_INIT(0);
125 struct ptlrpc_sec_policy *policy;
126 __u16 number = SPTLRPC_FLVR_POLICY(flavor);
129 if (number >= SPTLRPC_POLICY_MAX)
133 read_lock(&policy_lock);
134 policy = policies[number];
135 if (policy && !try_module_get(policy->sp_owner))
138 flag = atomic_read(&loaded);
139 read_unlock(&policy_lock);
141 if (policy != NULL || flag != 0 ||
142 number != SPTLRPC_POLICY_GSS)
145 /* try to load gss module, once */
146 mutex_down(&load_mutex);
147 if (atomic_read(&loaded) == 0) {
148 if (request_module("ptlrpc_gss") == 0)
149 CWARN("module ptlrpc_gss loaded on demand\n");
151 CERROR("Unable to load module ptlrpc_gss\n");
153 atomic_set(&loaded, 1);
155 mutex_up(&load_mutex);
161 __u32 sptlrpc_name2flavor_base(const char *name)
163 if (!strcmp(name, "null"))
164 return SPTLRPC_FLVR_NULL;
165 if (!strcmp(name, "plain"))
166 return SPTLRPC_FLVR_PLAIN;
167 if (!strcmp(name, "krb5n"))
168 return SPTLRPC_FLVR_KRB5N;
169 if (!strcmp(name, "krb5a"))
170 return SPTLRPC_FLVR_KRB5A;
171 if (!strcmp(name, "krb5i"))
172 return SPTLRPC_FLVR_KRB5I;
173 if (!strcmp(name, "krb5p"))
174 return SPTLRPC_FLVR_KRB5P;
176 return SPTLRPC_FLVR_INVALID;
178 EXPORT_SYMBOL(sptlrpc_name2flavor_base);
180 const char *sptlrpc_flavor2name_base(__u32 flvr)
182 __u32 base = SPTLRPC_FLVR_BASE(flvr);
184 if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL))
186 else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_PLAIN))
188 else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5N))
190 else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5A))
192 else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5I))
194 else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5P))
197 CERROR("invalid wire flavor 0x%x\n", flvr);
200 EXPORT_SYMBOL(sptlrpc_flavor2name_base);
202 char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf,
203 char *buf, int bufsize)
205 if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN)
206 snprintf(buf, bufsize, "hash:%s",
207 sptlrpc_get_hash_name(sf->u_bulk.hash.hash_alg));
209 snprintf(buf, bufsize, "%s",
210 sptlrpc_flavor2name_base(sf->sf_rpc));
212 buf[bufsize - 1] = '\0';
215 EXPORT_SYMBOL(sptlrpc_flavor2name_bulk);
217 char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize)
219 snprintf(buf, bufsize, "%s", sptlrpc_flavor2name_base(sf->sf_rpc));
222 * currently we don't support customized bulk specification for
223 * flavors other than plain
225 if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) {
229 sptlrpc_flavor2name_bulk(sf, &bspec[1], sizeof(bspec) - 1);
230 strncat(buf, bspec, bufsize);
233 buf[bufsize - 1] = '\0';
236 EXPORT_SYMBOL(sptlrpc_flavor2name);
238 char *sptlrpc_secflags2str(__u32 flags, char *buf, int bufsize)
242 if (flags & PTLRPC_SEC_FL_REVERSE)
243 strncat(buf, "reverse,", bufsize);
244 if (flags & PTLRPC_SEC_FL_ROOTONLY)
245 strncat(buf, "rootonly,", bufsize);
246 if (flags & PTLRPC_SEC_FL_UDESC)
247 strncat(buf, "udesc,", bufsize);
248 if (flags & PTLRPC_SEC_FL_BULK)
249 strncat(buf, "bulk,", bufsize);
251 strncat(buf, "-,", bufsize);
253 buf[bufsize - 1] = '\0';
256 EXPORT_SYMBOL(sptlrpc_secflags2str);
258 /**************************************************
259 * client context APIs *
260 **************************************************/
263 struct ptlrpc_cli_ctx *get_my_ctx(struct ptlrpc_sec *sec)
265 struct vfs_cred vcred;
266 int create = 1, remove_dead = 1;
269 LASSERT(sec->ps_policy->sp_cops->lookup_ctx);
271 if (sec->ps_flvr.sf_flags & (PTLRPC_SEC_FL_REVERSE |
272 PTLRPC_SEC_FL_ROOTONLY)) {
275 if (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE) {
280 vcred.vc_uid = cfs_current()->uid;
281 vcred.vc_gid = cfs_current()->gid;
284 return sec->ps_policy->sp_cops->lookup_ctx(sec, &vcred,
285 create, remove_dead);
288 struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx)
290 LASSERT(atomic_read(&ctx->cc_refcount) > 0);
291 atomic_inc(&ctx->cc_refcount);
294 EXPORT_SYMBOL(sptlrpc_cli_ctx_get);
296 void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync)
298 struct ptlrpc_sec *sec = ctx->cc_sec;
301 LASSERT(atomic_read(&ctx->cc_refcount));
303 if (!atomic_dec_and_test(&ctx->cc_refcount))
306 sec->ps_policy->sp_cops->release_ctx(sec, ctx, sync);
308 EXPORT_SYMBOL(sptlrpc_cli_ctx_put);
311 * expire the context immediately.
312 * the caller must hold at least 1 ref on the ctx.
314 void sptlrpc_cli_ctx_expire(struct ptlrpc_cli_ctx *ctx)
316 LASSERT(ctx->cc_ops->die);
317 ctx->cc_ops->die(ctx, 0);
319 EXPORT_SYMBOL(sptlrpc_cli_ctx_expire);
321 void sptlrpc_cli_ctx_wakeup(struct ptlrpc_cli_ctx *ctx)
323 struct ptlrpc_request *req, *next;
325 spin_lock(&ctx->cc_lock);
326 list_for_each_entry_safe(req, next, &ctx->cc_req_list, rq_ctx_chain) {
327 list_del_init(&req->rq_ctx_chain);
328 ptlrpc_client_wake_req(req);
330 spin_unlock(&ctx->cc_lock);
332 EXPORT_SYMBOL(sptlrpc_cli_ctx_wakeup);
334 int sptlrpc_cli_ctx_display(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize)
336 LASSERT(ctx->cc_ops);
338 if (ctx->cc_ops->display == NULL)
341 return ctx->cc_ops->display(ctx, buf, bufsize);
344 static int import_sec_check_expire(struct obd_import *imp)
348 spin_lock(&imp->imp_lock);
349 if (imp->imp_sec_expire &&
350 imp->imp_sec_expire < cfs_time_current_sec()) {
352 imp->imp_sec_expire = 0;
354 spin_unlock(&imp->imp_lock);
359 CDEBUG(D_SEC, "found delayed sec adapt expired, do it now\n");
360 return sptlrpc_import_sec_adapt(imp, NULL, 0);
363 static int import_sec_validate_get(struct obd_import *imp,
364 struct ptlrpc_sec **sec)
368 if (unlikely(imp->imp_sec_expire)) {
369 rc = import_sec_check_expire(imp);
374 *sec = sptlrpc_import_sec_ref(imp);
376 CERROR("import %p (%s) with no sec\n",
377 imp, ptlrpc_import_state_name(imp->imp_state));
381 if (unlikely((*sec)->ps_dying)) {
382 CERROR("attempt to use dying sec %p\n", sec);
383 sptlrpc_sec_put(*sec);
390 int sptlrpc_req_get_ctx(struct ptlrpc_request *req)
392 struct obd_import *imp = req->rq_import;
393 struct ptlrpc_sec *sec;
397 LASSERT(!req->rq_cli_ctx);
400 rc = import_sec_validate_get(imp, &sec);
404 req->rq_cli_ctx = get_my_ctx(sec);
406 sptlrpc_sec_put(sec);
408 if (!req->rq_cli_ctx) {
409 CERROR("req %p: fail to get context\n", req);
417 * if @sync == 0, this function should return quickly without sleep;
418 * otherwise might trigger ctx destroying rpc to server.
420 void sptlrpc_req_put_ctx(struct ptlrpc_request *req, int sync)
425 LASSERT(req->rq_cli_ctx);
427 /* request might be asked to release earlier while still
428 * in the context waiting list.
430 if (!list_empty(&req->rq_ctx_chain)) {
431 spin_lock(&req->rq_cli_ctx->cc_lock);
432 list_del_init(&req->rq_ctx_chain);
433 spin_unlock(&req->rq_cli_ctx->cc_lock);
436 sptlrpc_cli_ctx_put(req->rq_cli_ctx, sync);
437 req->rq_cli_ctx = NULL;
442 int sptlrpc_req_ctx_switch(struct ptlrpc_request *req,
443 struct ptlrpc_cli_ctx *oldctx,
444 struct ptlrpc_cli_ctx *newctx)
446 struct sptlrpc_flavor old_flvr;
451 if (likely(oldctx->cc_sec == newctx->cc_sec))
454 LASSERT(req->rq_reqmsg);
455 LASSERT(req->rq_reqlen);
456 LASSERT(req->rq_replen);
458 CWARN("req %p: switch ctx %p -> %p, switch sec %p(%s) -> %p(%s)\n",
460 oldctx->cc_sec, oldctx->cc_sec->ps_policy->sp_name,
461 newctx->cc_sec, newctx->cc_sec->ps_policy->sp_name);
464 old_flvr = req->rq_flvr;
466 /* save request message */
467 reqmsg_size = req->rq_reqlen;
468 OBD_ALLOC(reqmsg, reqmsg_size);
471 memcpy(reqmsg, req->rq_reqmsg, reqmsg_size);
473 /* release old req/rep buf */
474 req->rq_cli_ctx = oldctx;
475 sptlrpc_cli_free_reqbuf(req);
476 sptlrpc_cli_free_repbuf(req);
477 req->rq_cli_ctx = newctx;
479 /* recalculate the flavor */
480 sptlrpc_req_set_flavor(req, 0);
482 /* alloc new request buffer
483 * we don't need to alloc reply buffer here, leave it to the
484 * rest procedure of ptlrpc
486 rc = sptlrpc_cli_alloc_reqbuf(req, reqmsg_size);
488 LASSERT(req->rq_reqmsg);
489 memcpy(req->rq_reqmsg, reqmsg, reqmsg_size);
491 CWARN("failed to alloc reqbuf: %d\n", rc);
492 req->rq_flvr = old_flvr;
495 OBD_FREE(reqmsg, reqmsg_size);
500 * if current context has died, or if we resend after flavor switched,
501 * call this func to switch context. if no switch is needed, request
502 * will end up with the same context.
504 * request must have a context. in any case of failure, restore the
505 * restore the old one - a request must have a context.
507 int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req)
509 struct ptlrpc_cli_ctx *oldctx = req->rq_cli_ctx;
510 struct ptlrpc_cli_ctx *newctx;
516 sptlrpc_cli_ctx_get(oldctx);
517 sptlrpc_req_put_ctx(req, 0);
519 rc = sptlrpc_req_get_ctx(req);
521 LASSERT(!req->rq_cli_ctx);
523 /* restore old ctx */
524 req->rq_cli_ctx = oldctx;
528 newctx = req->rq_cli_ctx;
531 if (unlikely(newctx == oldctx)) {
532 if (test_bit(PTLRPC_CTX_DEAD_BIT, &oldctx->cc_flags)) {
534 * still get the old ctx, usually means system busy
536 CWARN("ctx (%p, fl %lx) doesn't switch, "
537 "relax a little bit\n",
538 newctx, newctx->cc_flags);
540 cfs_schedule_timeout(CFS_TASK_INTERRUPTIBLE, HZ);
543 rc = sptlrpc_req_ctx_switch(req, oldctx, newctx);
545 /* restore old ctx */
546 sptlrpc_req_put_ctx(req, 0);
547 req->rq_cli_ctx = oldctx;
551 LASSERT(req->rq_cli_ctx == newctx);
554 sptlrpc_cli_ctx_put(oldctx, 1);
557 EXPORT_SYMBOL(sptlrpc_req_replace_dead_ctx);
560 int ctx_check_refresh(struct ptlrpc_cli_ctx *ctx)
562 if (cli_ctx_is_refreshed(ctx))
568 int ctx_refresh_timeout(void *data)
570 struct ptlrpc_request *req = data;
573 /* conn_cnt is needed in expire_one_request */
574 lustre_msg_set_conn_cnt(req->rq_reqmsg, req->rq_import->imp_conn_cnt);
576 rc = ptlrpc_expire_one_request(req, 1);
577 /* if we started recovery, we should mark this ctx dead; otherwise
578 * in case of lgssd died nobody would retire this ctx, following
579 * connecting will still find the same ctx thus cause deadlock.
580 * there's an assumption that expire time of the request should be
581 * later than the context refresh expire time.
584 req->rq_cli_ctx->cc_ops->die(req->rq_cli_ctx, 0);
589 void ctx_refresh_interrupt(void *data)
591 struct ptlrpc_request *req = data;
593 spin_lock(&req->rq_lock);
595 spin_unlock(&req->rq_lock);
599 void req_off_ctx_list(struct ptlrpc_request *req, struct ptlrpc_cli_ctx *ctx)
601 spin_lock(&ctx->cc_lock);
602 if (!list_empty(&req->rq_ctx_chain))
603 list_del_init(&req->rq_ctx_chain);
604 spin_unlock(&ctx->cc_lock);
608 * the status of context could be subject to be changed by other threads at any
609 * time. we allow this race. but once we return with 0, the caller will
610 * suppose it's uptodated and keep using it until the owning rpc is done.
614 * = 0 - wait until success or fatal error occur
615 * > 0 - timeout value
617 * return 0 only if the context is uptodated.
619 int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout)
621 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
622 struct ptlrpc_sec *sec;
623 struct l_wait_info lwi;
629 if (req->rq_ctx_init || req->rq_ctx_fini)
633 * during the process a request's context might change type even
634 * (e.g. from gss ctx to plain ctx), so each loop we need to re-check
638 rc = import_sec_validate_get(req->rq_import, &sec);
642 if (sec->ps_flvr.sf_rpc != req->rq_flvr.sf_rpc)
643 sptlrpc_req_replace_dead_ctx(req);
645 sptlrpc_sec_put(sec);
647 if (cli_ctx_is_eternal(ctx))
650 if (unlikely(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags))) {
651 LASSERT(ctx->cc_ops->refresh);
652 ctx->cc_ops->refresh(ctx);
654 LASSERT(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags) == 0);
656 LASSERT(ctx->cc_ops->validate);
657 if (ctx->cc_ops->validate(ctx) == 0) {
658 req_off_ctx_list(req, ctx);
662 if (unlikely(test_bit(PTLRPC_CTX_ERROR_BIT, &ctx->cc_flags))) {
664 req_off_ctx_list(req, ctx);
668 /* This is subtle. For resent message we have to keep original
669 * context to survive following situation:
670 * 1. the request sent to server
671 * 2. recovery was kick start
672 * 3. recovery finished, the request marked as resent
673 * 4. resend the request
674 * 5. old reply from server received (because xid is the same)
675 * 6. verify reply (has to be success)
676 * 7. new reply from server received, lnet drop it
678 * Note we can't simply change xid for resent request because
679 * server reply on it for reply reconstruction.
681 * Commonly the original context should be uptodate because we
682 * have a expiry nice time; And server will keep their half part
683 * context because we at least hold a ref of old context which
684 * prevent the context detroy RPC be sent. So server still can
685 * accept the request and finish RPC. Two cases:
686 * 1. If server side context has been trimed, a NO_CONTEXT will
687 * be returned, gss_cli_ctx_verify/unseal will switch to new
689 * 2. Current context never be refreshed, then we are fine: we
690 * never really send request with old context before.
692 if (test_bit(PTLRPC_CTX_UPTODATE_BIT, &ctx->cc_flags) &&
693 unlikely(req->rq_reqmsg) &&
694 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
695 req_off_ctx_list(req, ctx);
699 if (unlikely(test_bit(PTLRPC_CTX_DEAD_BIT, &ctx->cc_flags))) {
701 * don't switch ctx if import was deactivated
703 if (req->rq_import->imp_deactive) {
704 req_off_ctx_list(req, ctx);
709 rc = sptlrpc_req_replace_dead_ctx(req);
711 LASSERT(ctx == req->rq_cli_ctx);
712 CERROR("req %p: failed to replace dead ctx %p: %d\n",
715 LASSERT(list_empty(&req->rq_ctx_chain));
719 CWARN("req %p: replace dead ctx %p => ctx %p (%u->%s)\n",
720 req, ctx, req->rq_cli_ctx,
721 req->rq_cli_ctx->cc_vcred.vc_uid,
722 sec2target_str(req->rq_cli_ctx->cc_sec));
724 ctx = req->rq_cli_ctx;
725 LASSERT(list_empty(&req->rq_ctx_chain));
730 /* Now we're sure this context is during upcall, add myself into
733 spin_lock(&ctx->cc_lock);
734 if (list_empty(&req->rq_ctx_chain))
735 list_add(&req->rq_ctx_chain, &ctx->cc_req_list);
736 spin_unlock(&ctx->cc_lock);
739 RETURN(-EWOULDBLOCK);
741 /* Clear any flags that may be present from previous sends */
742 LASSERT(req->rq_receiving_reply == 0);
743 spin_lock(&req->rq_lock);
745 req->rq_timedout = 0;
748 spin_unlock(&req->rq_lock);
750 lwi = LWI_TIMEOUT_INTR(timeout * HZ, ctx_refresh_timeout,
751 ctx_refresh_interrupt, req);
752 rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi);
754 /* following cases we could be here:
755 * - successfully refreshed;
757 * - timedout, and we don't want recover from the failure;
758 * - timedout, and waked up upon recovery finished;
759 * - someone else mark this ctx dead by force;
760 * - someone invalidate the req and call ptlrpc_client_wake_req(),
761 * e.g. ptlrpc_abort_inflight();
763 if (!cli_ctx_is_refreshed(ctx)) {
764 /* timed out or interruptted */
765 req_off_ctx_list(req, ctx);
775 * Note this could be called in two situations:
776 * - new request from ptlrpc_pre_req(), with proper @opcode
777 * - old request which changed ctx in the middle, with @opcode == 0
779 void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode)
781 struct ptlrpc_sec *sec;
783 LASSERT(req->rq_import);
784 LASSERT(req->rq_cli_ctx);
785 LASSERT(req->rq_cli_ctx->cc_sec);
786 LASSERT(req->rq_bulk_read == 0 || req->rq_bulk_write == 0);
788 /* special security flags accoding to opcode */
792 req->rq_bulk_read = 1;
796 req->rq_bulk_write = 1;
799 req->rq_ctx_init = 1;
802 req->rq_ctx_fini = 1;
805 /* init/fini rpc won't be resend, so can't be here */
806 LASSERT(req->rq_ctx_init == 0);
807 LASSERT(req->rq_ctx_fini == 0);
809 /* cleanup flags, which should be recalculated */
810 req->rq_pack_udesc = 0;
811 req->rq_pack_bulk = 0;
815 sec = req->rq_cli_ctx->cc_sec;
817 spin_lock(&sec->ps_lock);
818 req->rq_flvr = sec->ps_flvr;
819 spin_unlock(&sec->ps_lock);
821 /* force SVC_NULL for context initiation rpc, SVC_INTG for context
823 if (unlikely(req->rq_ctx_init))
824 flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_NULL);
825 else if (unlikely(req->rq_ctx_fini))
826 flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_INTG);
828 /* user descriptor flag, null security can't do it anyway */
829 if ((sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_UDESC) &&
830 (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL))
831 req->rq_pack_udesc = 1;
833 /* bulk security flag */
834 if ((req->rq_bulk_read || req->rq_bulk_write) &&
835 sptlrpc_flavor_has_bulk(&req->rq_flvr))
836 req->rq_pack_bulk = 1;
839 void sptlrpc_request_out_callback(struct ptlrpc_request *req)
841 if (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc) != SPTLRPC_SVC_PRIV)
844 LASSERT(req->rq_clrbuf);
845 if (req->rq_pool || !req->rq_reqbuf)
848 OBD_FREE(req->rq_reqbuf, req->rq_reqbuf_len);
849 req->rq_reqbuf = NULL;
850 req->rq_reqbuf_len = 0;
854 * check whether current user have valid context for an import or not.
855 * might repeatedly try in case of non-fatal errors.
856 * return 0 on success, < 0 on failure
858 int sptlrpc_import_check_ctx(struct obd_import *imp)
860 struct ptlrpc_sec *sec;
861 struct ptlrpc_cli_ctx *ctx;
862 struct ptlrpc_request *req = NULL;
868 sec = sptlrpc_import_sec_ref(imp);
869 ctx = get_my_ctx(sec);
870 sptlrpc_sec_put(sec);
875 if (cli_ctx_is_eternal(ctx) ||
876 ctx->cc_ops->validate(ctx) == 0) {
877 sptlrpc_cli_ctx_put(ctx, 1);
881 if (cli_ctx_is_error(ctx)) {
882 sptlrpc_cli_ctx_put(ctx, 1);
890 spin_lock_init(&req->rq_lock);
891 atomic_set(&req->rq_refcount, 10000);
892 CFS_INIT_LIST_HEAD(&req->rq_ctx_chain);
893 cfs_waitq_init(&req->rq_reply_waitq);
894 req->rq_import = imp;
895 req->rq_flvr = sec->ps_flvr;
896 req->rq_cli_ctx = ctx;
898 rc = sptlrpc_req_refresh_ctx(req, 0);
899 LASSERT(list_empty(&req->rq_ctx_chain));
900 sptlrpc_cli_ctx_put(req->rq_cli_ctx, 1);
906 int sptlrpc_cli_wrap_request(struct ptlrpc_request *req)
908 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
913 LASSERT(ctx->cc_sec);
914 LASSERT(req->rq_reqbuf || req->rq_clrbuf);
916 /* we wrap bulk request here because now we can be sure
917 * the context is uptodate.
920 rc = sptlrpc_cli_wrap_bulk(req, req->rq_bulk);
925 switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
926 case SPTLRPC_SVC_NULL:
927 case SPTLRPC_SVC_AUTH:
928 case SPTLRPC_SVC_INTG:
929 LASSERT(ctx->cc_ops->sign);
930 rc = ctx->cc_ops->sign(ctx, req);
932 case SPTLRPC_SVC_PRIV:
933 LASSERT(ctx->cc_ops->seal);
934 rc = ctx->cc_ops->seal(ctx, req);
941 LASSERT(req->rq_reqdata_len);
942 LASSERT(req->rq_reqdata_len % 8 == 0);
943 LASSERT(req->rq_reqdata_len <= req->rq_reqbuf_len);
949 static int do_cli_unwrap_reply(struct ptlrpc_request *req)
951 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
957 LASSERT(ctx->cc_sec);
958 LASSERT(req->rq_repbuf);
959 LASSERT(req->rq_repdata);
960 LASSERT(req->rq_repmsg == NULL);
962 if (req->rq_repdata_len < sizeof(struct lustre_msg)) {
963 CERROR("replied data length %d too small\n",
964 req->rq_repdata_len);
968 /* v2 message, check request/reply policy match */
969 flvr = WIRE_FLVR(req->rq_repdata->lm_secflvr);
971 if (req->rq_repdata->lm_magic == LUSTRE_MSG_MAGIC_V2_SWABBED)
974 if (SPTLRPC_FLVR_POLICY(flvr) !=
975 SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)) {
976 CERROR("request policy was %u while reply with %u\n",
977 SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc),
978 SPTLRPC_FLVR_POLICY(flvr));
982 /* do nothing if it's null policy; otherwise unpack the
984 if (SPTLRPC_FLVR_POLICY(flvr) != SPTLRPC_POLICY_NULL &&
985 lustre_unpack_msg(req->rq_repdata, req->rq_repdata_len))
988 switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
989 case SPTLRPC_SVC_NULL:
990 case SPTLRPC_SVC_AUTH:
991 case SPTLRPC_SVC_INTG:
992 LASSERT(ctx->cc_ops->verify);
993 rc = ctx->cc_ops->verify(ctx, req);
995 case SPTLRPC_SVC_PRIV:
996 LASSERT(ctx->cc_ops->unseal);
997 rc = ctx->cc_ops->unseal(ctx, req);
1003 LASSERT(rc || req->rq_repmsg || req->rq_resend);
1008 * upon this be called, the reply buffer should have been un-posted,
1009 * so nothing is going to change.
1011 int sptlrpc_cli_unwrap_reply(struct ptlrpc_request *req)
1013 LASSERT(req->rq_repbuf);
1014 LASSERT(req->rq_repdata == NULL);
1015 LASSERT(req->rq_repmsg == NULL);
1016 LASSERT(req->rq_reply_off + req->rq_nob_received <= req->rq_repbuf_len);
1018 if (req->rq_reply_off == 0 &&
1019 (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) {
1020 CERROR("real reply with offset 0\n");
1024 if (req->rq_reply_off % 8 != 0) {
1025 CERROR("reply at odd offset %u\n", req->rq_reply_off);
1029 req->rq_repdata = (struct lustre_msg *)
1030 (req->rq_repbuf + req->rq_reply_off);
1031 req->rq_repdata_len = req->rq_nob_received;
1033 return do_cli_unwrap_reply(req);
1037 * Upon called, the receive buffer might be still posted, so the reply data
1038 * might be changed at any time, no matter we're holding rq_lock or not. we
1039 * expect the rq_reply_off be 0, rq_nob_received is the early reply size.
1041 * we allocate separate ptlrpc_request and reply buffer for early reply
1042 * processing, return 0 and @req_ret is a duplicated ptlrpc_request. caller
1043 * must call sptlrpc_cli_finish_early_reply() on the returned request to
1044 * release it. if anything goes wrong @req_ret will not be set.
1046 int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req,
1047 struct ptlrpc_request **req_ret)
1049 struct ptlrpc_request *early_req;
1051 int early_bufsz, early_size;
1055 OBD_ALLOC_PTR(early_req);
1056 if (early_req == NULL)
1059 early_size = req->rq_nob_received;
1060 early_bufsz = size_roundup_power2(early_size);
1061 OBD_ALLOC(early_buf, early_bufsz);
1062 if (early_buf == NULL)
1063 GOTO(err_req, rc = -ENOMEM);
1065 /* sanity checkings and copy data out, do it inside spinlock */
1066 spin_lock(&req->rq_lock);
1068 if (req->rq_replied) {
1069 spin_unlock(&req->rq_lock);
1070 GOTO(err_buf, rc = -EALREADY);
1073 LASSERT(req->rq_repbuf);
1074 LASSERT(req->rq_repdata == NULL);
1075 LASSERT(req->rq_repmsg == NULL);
1077 if (req->rq_reply_off != 0) {
1078 CERROR("early reply with offset %u\n", req->rq_reply_off);
1079 spin_unlock(&req->rq_lock);
1080 GOTO(err_buf, rc = -EPROTO);
1083 if (req->rq_nob_received != early_size) {
1084 /* even another early arrived the size should be the same */
1085 CERROR("data size has changed from %u to %u\n",
1086 early_size, req->rq_nob_received);
1087 spin_unlock(&req->rq_lock);
1088 GOTO(err_buf, rc = -EINVAL);
1091 if (req->rq_nob_received < sizeof(struct lustre_msg)) {
1092 CERROR("early reply length %d too small\n",
1093 req->rq_nob_received);
1094 spin_unlock(&req->rq_lock);
1095 GOTO(err_buf, rc = -EALREADY);
1098 memcpy(early_buf, req->rq_repbuf, early_size);
1099 spin_unlock(&req->rq_lock);
1101 early_req->rq_cli_ctx = sptlrpc_cli_ctx_get(req->rq_cli_ctx);
1102 early_req->rq_flvr = req->rq_flvr;
1103 early_req->rq_repbuf = early_buf;
1104 early_req->rq_repbuf_len = early_bufsz;
1105 early_req->rq_repdata = (struct lustre_msg *) early_buf;
1106 early_req->rq_repdata_len = early_size;
1107 early_req->rq_early = 1;
1109 rc = do_cli_unwrap_reply(early_req);
1111 DEBUG_REQ(D_ADAPTTO, early_req,
1112 "error %d unwrap early reply", rc);
1116 LASSERT(early_req->rq_repmsg);
1117 *req_ret = early_req;
1121 sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
1123 OBD_FREE(early_buf, early_bufsz);
1125 OBD_FREE_PTR(early_req);
1129 void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req)
1131 LASSERT(early_req->rq_repbuf);
1132 LASSERT(early_req->rq_repdata);
1133 LASSERT(early_req->rq_repmsg);
1135 sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
1136 OBD_FREE(early_req->rq_repbuf, early_req->rq_repbuf_len);
1137 OBD_FREE_PTR(early_req);
1140 /**************************************************
1142 **************************************************/
1145 * "fixed" sec (e.g. null) use sec_id < 0
1147 static atomic_t sptlrpc_sec_id = ATOMIC_INIT(1);
1149 int sptlrpc_get_next_secid(void)
1151 return atomic_inc_return(&sptlrpc_sec_id);
1153 EXPORT_SYMBOL(sptlrpc_get_next_secid);
1155 /**************************************************
1156 * client side high-level security APIs *
1157 **************************************************/
1159 static int sec_cop_flush_ctx_cache(struct ptlrpc_sec *sec, uid_t uid,
1160 int grace, int force)
1162 struct ptlrpc_sec_policy *policy = sec->ps_policy;
1164 LASSERT(policy->sp_cops);
1165 LASSERT(policy->sp_cops->flush_ctx_cache);
1167 return policy->sp_cops->flush_ctx_cache(sec, uid, grace, force);
1170 static void sec_cop_destroy_sec(struct ptlrpc_sec *sec)
1172 struct ptlrpc_sec_policy *policy = sec->ps_policy;
1174 LASSERT(atomic_read(&sec->ps_refcount) == 0);
1175 LASSERT(atomic_read(&sec->ps_nctx) == 0);
1176 LASSERT(policy->sp_cops->destroy_sec);
1178 CDEBUG(D_SEC, "%s@%p: being destroied\n", sec->ps_policy->sp_name, sec);
1180 policy->sp_cops->destroy_sec(sec);
1181 sptlrpc_policy_put(policy);
1184 void sptlrpc_sec_destroy(struct ptlrpc_sec *sec)
1186 sec_cop_destroy_sec(sec);
1188 EXPORT_SYMBOL(sptlrpc_sec_destroy);
1190 static void sptlrpc_sec_kill(struct ptlrpc_sec *sec)
1192 LASSERT(atomic_read(&sec->ps_refcount) > 0);
1194 if (sec->ps_policy->sp_cops->kill_sec) {
1195 sec->ps_policy->sp_cops->kill_sec(sec);
1197 sec_cop_flush_ctx_cache(sec, -1, 1, 1);
1201 struct ptlrpc_sec *sptlrpc_sec_get(struct ptlrpc_sec *sec)
1204 LASSERT(atomic_read(&sec->ps_refcount) > 0);
1205 atomic_inc(&sec->ps_refcount);
1210 EXPORT_SYMBOL(sptlrpc_sec_get);
1212 void sptlrpc_sec_put(struct ptlrpc_sec *sec)
1215 LASSERT(atomic_read(&sec->ps_refcount) > 0);
1217 if (atomic_dec_and_test(&sec->ps_refcount)) {
1218 LASSERT(atomic_read(&sec->ps_nctx) == 0);
1220 sptlrpc_gc_del_sec(sec);
1221 sec_cop_destroy_sec(sec);
1225 EXPORT_SYMBOL(sptlrpc_sec_put);
1228 * policy module is responsible for taking refrence of import
1231 struct ptlrpc_sec * sptlrpc_sec_create(struct obd_import *imp,
1232 struct ptlrpc_svc_ctx *svc_ctx,
1233 struct sptlrpc_flavor *sf,
1234 enum lustre_sec_part sp)
1236 struct ptlrpc_sec_policy *policy;
1237 struct ptlrpc_sec *sec;
1242 LASSERT(imp->imp_dlm_fake == 1);
1244 CDEBUG(D_SEC, "%s %s: reverse sec using flavor %s\n",
1245 imp->imp_obd->obd_type->typ_name,
1246 imp->imp_obd->obd_name,
1247 sptlrpc_flavor2name(sf, str, sizeof(str)));
1249 policy = sptlrpc_policy_get(svc_ctx->sc_policy);
1250 sf->sf_flags |= PTLRPC_SEC_FL_REVERSE | PTLRPC_SEC_FL_ROOTONLY;
1252 LASSERT(imp->imp_dlm_fake == 0);
1254 CDEBUG(D_SEC, "%s %s: select security flavor %s\n",
1255 imp->imp_obd->obd_type->typ_name,
1256 imp->imp_obd->obd_name,
1257 sptlrpc_flavor2name(sf, str, sizeof(str)));
1259 policy = sptlrpc_wireflavor2policy(sf->sf_rpc);
1261 CERROR("invalid flavor 0x%x\n", sf->sf_rpc);
1266 sec = policy->sp_cops->create_sec(imp, svc_ctx, sf);
1268 atomic_inc(&sec->ps_refcount);
1272 if (sec->ps_gc_interval && policy->sp_cops->gc_ctx)
1273 sptlrpc_gc_add_sec(sec);
1275 sptlrpc_policy_put(policy);
1281 struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp)
1283 struct ptlrpc_sec *sec;
1285 spin_lock(&imp->imp_lock);
1286 sec = sptlrpc_sec_get(imp->imp_sec);
1287 spin_unlock(&imp->imp_lock);
1291 EXPORT_SYMBOL(sptlrpc_import_sec_ref);
1293 static void sptlrpc_import_sec_install(struct obd_import *imp,
1294 struct ptlrpc_sec *sec)
1296 struct ptlrpc_sec *old_sec;
1298 LASSERT(atomic_read(&sec->ps_refcount) > 0);
1300 spin_lock(&imp->imp_lock);
1301 old_sec = imp->imp_sec;
1303 spin_unlock(&imp->imp_lock);
1306 sptlrpc_sec_kill(old_sec);
1308 /* balance the ref taken by this import */
1309 sptlrpc_sec_put(old_sec);
1314 int flavor_equal(struct sptlrpc_flavor *sf1, struct sptlrpc_flavor *sf2)
1316 return (memcmp(sf1, sf2, sizeof(*sf1)) == 0);
1320 void flavor_copy(struct sptlrpc_flavor *dst, struct sptlrpc_flavor *src)
1325 static void sptlrpc_import_sec_adapt_inplace(struct obd_import *imp,
1326 struct ptlrpc_sec *sec,
1327 struct sptlrpc_flavor *sf)
1329 char str1[32], str2[32];
1331 if (sec->ps_flvr.sf_flags != sf->sf_flags)
1332 CWARN("changing sec flags: %s -> %s\n",
1333 sptlrpc_secflags2str(sec->ps_flvr.sf_flags,
1334 str1, sizeof(str1)),
1335 sptlrpc_secflags2str(sf->sf_flags,
1336 str2, sizeof(str2)));
1338 spin_lock(&sec->ps_lock);
1339 flavor_copy(&sec->ps_flvr, sf);
1340 spin_unlock(&sec->ps_lock);
1344 * for normal import, @svc_ctx should be NULL and @flvr is ignored;
1345 * for reverse import, @svc_ctx and @flvr is from incoming request.
1347 int sptlrpc_import_sec_adapt(struct obd_import *imp,
1348 struct ptlrpc_svc_ctx *svc_ctx,
1349 struct sptlrpc_flavor *flvr)
1351 struct ptlrpc_connection *conn;
1352 struct sptlrpc_flavor sf;
1353 struct ptlrpc_sec *sec, *newsec;
1354 enum lustre_sec_part sp;
1364 conn = imp->imp_connection;
1366 if (svc_ctx == NULL) {
1367 struct client_obd *cliobd = &imp->imp_obd->u.cli;
1369 * normal import, determine flavor from rule set, except
1370 * for mgc the flavor is predetermined.
1372 if (cliobd->cl_sp_me == LUSTRE_SP_MGC)
1373 sf = cliobd->cl_flvr_mgc;
1375 sptlrpc_conf_choose_flavor(cliobd->cl_sp_me,
1377 &cliobd->cl_target_uuid,
1380 sp = imp->imp_obd->u.cli.cl_sp_me;
1382 /* reverse import, determine flavor from incoming reqeust */
1385 if (sf.sf_rpc != SPTLRPC_FLVR_NULL)
1386 sf.sf_flags = PTLRPC_SEC_FL_REVERSE |
1387 PTLRPC_SEC_FL_ROOTONLY;
1389 sp = sptlrpc_target_sec_part(imp->imp_obd);
1392 sec = sptlrpc_import_sec_ref(imp);
1396 if (flavor_equal(&sf, &sec->ps_flvr))
1399 CWARN("import %s->%s: changing flavor %s -> %s\n",
1400 imp->imp_obd->obd_name,
1401 obd_uuid2str(&conn->c_remote_uuid),
1402 sptlrpc_flavor2name(&sec->ps_flvr, str, sizeof(str)),
1403 sptlrpc_flavor2name(&sf, str2, sizeof(str2)));
1405 if (SPTLRPC_FLVR_POLICY(sf.sf_rpc) ==
1406 SPTLRPC_FLVR_POLICY(sec->ps_flvr.sf_rpc) &&
1407 SPTLRPC_FLVR_MECH(sf.sf_rpc) ==
1408 SPTLRPC_FLVR_MECH(sec->ps_flvr.sf_rpc)) {
1409 sptlrpc_import_sec_adapt_inplace(imp, sec, &sf);
1413 CWARN("import %s->%s netid %x: select flavor %s\n",
1414 imp->imp_obd->obd_name,
1415 obd_uuid2str(&conn->c_remote_uuid),
1416 LNET_NIDNET(conn->c_self),
1417 sptlrpc_flavor2name(&sf, str, sizeof(str)));
1420 mutex_down(&imp->imp_sec_mutex);
1422 newsec = sptlrpc_sec_create(imp, svc_ctx, &sf, sp);
1424 sptlrpc_import_sec_install(imp, newsec);
1426 CERROR("import %s->%s: failed to create new sec\n",
1427 imp->imp_obd->obd_name,
1428 obd_uuid2str(&conn->c_remote_uuid));
1432 mutex_up(&imp->imp_sec_mutex);
1434 sptlrpc_sec_put(sec);
1438 void sptlrpc_import_sec_put(struct obd_import *imp)
1441 sptlrpc_sec_kill(imp->imp_sec);
1443 sptlrpc_sec_put(imp->imp_sec);
1444 imp->imp_sec = NULL;
1448 static void import_flush_ctx_common(struct obd_import *imp,
1449 uid_t uid, int grace, int force)
1451 struct ptlrpc_sec *sec;
1456 sec = sptlrpc_import_sec_ref(imp);
1460 sec_cop_flush_ctx_cache(sec, uid, grace, force);
1461 sptlrpc_sec_put(sec);
1464 void sptlrpc_import_inval_all_ctx(struct obd_import *imp)
1466 /* use grace == 0 */
1467 import_flush_ctx_common(imp, -1, 0, 1);
1470 void sptlrpc_import_flush_root_ctx(struct obd_import *imp)
1472 /* it's important to use grace mode, see explain in
1473 * sptlrpc_req_refresh_ctx() */
1474 import_flush_ctx_common(imp, 0, 1, 1);
1477 void sptlrpc_import_flush_my_ctx(struct obd_import *imp)
1479 import_flush_ctx_common(imp, cfs_current()->uid, 1, 1);
1481 EXPORT_SYMBOL(sptlrpc_import_flush_my_ctx);
1483 void sptlrpc_import_flush_all_ctx(struct obd_import *imp)
1485 import_flush_ctx_common(imp, -1, 1, 1);
1487 EXPORT_SYMBOL(sptlrpc_import_flush_all_ctx);
1490 * when complete successfully, req->rq_reqmsg should point to the
1493 int sptlrpc_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize)
1495 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
1496 struct ptlrpc_sec_policy *policy;
1500 LASSERT(atomic_read(&ctx->cc_refcount));
1501 LASSERT(ctx->cc_sec);
1502 LASSERT(ctx->cc_sec->ps_policy);
1503 LASSERT(req->rq_reqmsg == NULL);
1505 policy = ctx->cc_sec->ps_policy;
1506 rc = policy->sp_cops->alloc_reqbuf(ctx->cc_sec, req, msgsize);
1508 LASSERT(req->rq_reqmsg);
1509 LASSERT(req->rq_reqbuf || req->rq_clrbuf);
1511 /* zeroing preallocated buffer */
1513 memset(req->rq_reqmsg, 0, msgsize);
1519 void sptlrpc_cli_free_reqbuf(struct ptlrpc_request *req)
1521 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
1522 struct ptlrpc_sec_policy *policy;
1525 LASSERT(atomic_read(&ctx->cc_refcount));
1526 LASSERT(ctx->cc_sec);
1527 LASSERT(ctx->cc_sec->ps_policy);
1529 if (req->rq_reqbuf == NULL && req->rq_clrbuf == NULL)
1532 policy = ctx->cc_sec->ps_policy;
1533 policy->sp_cops->free_reqbuf(ctx->cc_sec, req);
1537 * NOTE caller must guarantee the buffer size is enough for the enlargement
1539 void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg,
1540 int segment, int newsize)
1543 int oldsize, oldmsg_size, movesize;
1545 LASSERT(segment < msg->lm_bufcount);
1546 LASSERT(msg->lm_buflens[segment] <= newsize);
1548 if (msg->lm_buflens[segment] == newsize)
1551 /* nothing to do if we are enlarging the last segment */
1552 if (segment == msg->lm_bufcount - 1) {
1553 msg->lm_buflens[segment] = newsize;
1557 oldsize = msg->lm_buflens[segment];
1559 src = lustre_msg_buf(msg, segment + 1, 0);
1560 msg->lm_buflens[segment] = newsize;
1561 dst = lustre_msg_buf(msg, segment + 1, 0);
1562 msg->lm_buflens[segment] = oldsize;
1564 /* move from segment + 1 to end segment */
1565 LASSERT(msg->lm_magic == LUSTRE_MSG_MAGIC_V2);
1566 oldmsg_size = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
1567 movesize = oldmsg_size - ((unsigned long) src - (unsigned long) msg);
1568 LASSERT(movesize >= 0);
1571 memmove(dst, src, movesize);
1573 /* note we don't clear the ares where old data live, not secret */
1575 /* finally set new segment size */
1576 msg->lm_buflens[segment] = newsize;
1578 EXPORT_SYMBOL(_sptlrpc_enlarge_msg_inplace);
1581 * enlarge @segment of upper message req->rq_reqmsg to @newsize, all data
1582 * will be preserved after enlargement. this must be called after rq_reqmsg has
1583 * been intialized at least.
1585 * caller's attention: upon return, rq_reqmsg and rq_reqlen might have
1588 int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req,
1589 int segment, int newsize)
1591 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
1592 struct ptlrpc_sec_cops *cops;
1593 struct lustre_msg *msg = req->rq_reqmsg;
1597 LASSERT(msg->lm_bufcount > segment);
1598 LASSERT(msg->lm_buflens[segment] <= newsize);
1600 if (msg->lm_buflens[segment] == newsize)
1603 cops = ctx->cc_sec->ps_policy->sp_cops;
1604 LASSERT(cops->enlarge_reqbuf);
1605 return cops->enlarge_reqbuf(ctx->cc_sec, req, segment, newsize);
1607 EXPORT_SYMBOL(sptlrpc_cli_enlarge_reqbuf);
1609 int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize)
1611 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
1612 struct ptlrpc_sec_policy *policy;
1616 LASSERT(atomic_read(&ctx->cc_refcount));
1617 LASSERT(ctx->cc_sec);
1618 LASSERT(ctx->cc_sec->ps_policy);
1623 policy = ctx->cc_sec->ps_policy;
1624 RETURN(policy->sp_cops->alloc_repbuf(ctx->cc_sec, req, msgsize));
1627 void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req)
1629 struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
1630 struct ptlrpc_sec_policy *policy;
1634 LASSERT(atomic_read(&ctx->cc_refcount));
1635 LASSERT(ctx->cc_sec);
1636 LASSERT(ctx->cc_sec->ps_policy);
1638 if (req->rq_repbuf == NULL)
1640 LASSERT(req->rq_repbuf_len);
1642 policy = ctx->cc_sec->ps_policy;
1643 policy->sp_cops->free_repbuf(ctx->cc_sec, req);
1647 int sptlrpc_cli_install_rvs_ctx(struct obd_import *imp,
1648 struct ptlrpc_cli_ctx *ctx)
1650 struct ptlrpc_sec_policy *policy = ctx->cc_sec->ps_policy;
1652 if (!policy->sp_cops->install_rctx)
1654 return policy->sp_cops->install_rctx(imp, ctx->cc_sec, ctx);
1657 int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp,
1658 struct ptlrpc_svc_ctx *ctx)
1660 struct ptlrpc_sec_policy *policy = ctx->sc_policy;
1662 if (!policy->sp_sops->install_rctx)
1664 return policy->sp_sops->install_rctx(imp, ctx);
1667 /****************************************
1668 * server side security *
1669 ****************************************/
1671 static int flavor_allowed(struct sptlrpc_flavor *exp,
1672 struct ptlrpc_request *req)
1674 struct sptlrpc_flavor *flvr = &req->rq_flvr;
1676 if (exp->sf_rpc == SPTLRPC_FLVR_ANY || exp->sf_rpc == flvr->sf_rpc)
1679 if ((req->rq_ctx_init || req->rq_ctx_fini) &&
1680 SPTLRPC_FLVR_POLICY(exp->sf_rpc) ==
1681 SPTLRPC_FLVR_POLICY(flvr->sf_rpc) &&
1682 SPTLRPC_FLVR_MECH(exp->sf_rpc) == SPTLRPC_FLVR_MECH(flvr->sf_rpc))
1688 #define EXP_FLVR_UPDATE_EXPIRE (OBD_TIMEOUT_DEFAULT + 10)
1690 int sptlrpc_target_export_check(struct obd_export *exp,
1691 struct ptlrpc_request *req)
1693 struct sptlrpc_flavor flavor;
1698 /* client side export has no imp_reverse, skip
1699 * FIXME maybe we should check flavor this as well??? */
1700 if (exp->exp_imp_reverse == NULL)
1703 /* don't care about ctx fini rpc */
1704 if (req->rq_ctx_fini)
1707 spin_lock(&exp->exp_lock);
1709 /* if flavor just changed (exp->exp_flvr_changed != 0), we wait for
1710 * the first req with the new flavor, then treat it as current flavor,
1711 * adapt reverse sec according to it.
1712 * note the first rpc with new flavor might not be with root ctx, in
1713 * which case delay the sec_adapt by leaving exp_flvr_adapt == 1. */
1714 if (unlikely(exp->exp_flvr_changed) &&
1715 flavor_allowed(&exp->exp_flvr_old[1], req)) {
1716 /* make the new flavor as "current", and old ones as
1717 * about-to-expire */
1718 CDEBUG(D_SEC, "exp %p: just changed: %x->%x\n", exp,
1719 exp->exp_flvr.sf_rpc, exp->exp_flvr_old[1].sf_rpc);
1720 flavor = exp->exp_flvr_old[1];
1721 exp->exp_flvr_old[1] = exp->exp_flvr_old[0];
1722 exp->exp_flvr_expire[1] = exp->exp_flvr_expire[0];
1723 exp->exp_flvr_old[0] = exp->exp_flvr;
1724 exp->exp_flvr_expire[0] = cfs_time_current_sec() +
1725 EXP_FLVR_UPDATE_EXPIRE;
1726 exp->exp_flvr = flavor;
1728 /* flavor change finished */
1729 exp->exp_flvr_changed = 0;
1730 LASSERT(exp->exp_flvr_adapt == 1);
1732 /* if it's gss, we only interested in root ctx init */
1733 if (req->rq_auth_gss &&
1734 !(req->rq_ctx_init && (req->rq_auth_usr_root ||
1735 req->rq_auth_usr_mdt))) {
1736 spin_unlock(&exp->exp_lock);
1737 CDEBUG(D_SEC, "is good but not root(%d:%d:%d:%d)\n",
1738 req->rq_auth_gss, req->rq_ctx_init,
1739 req->rq_auth_usr_root, req->rq_auth_usr_mdt);
1743 exp->exp_flvr_adapt = 0;
1744 spin_unlock(&exp->exp_lock);
1746 return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
1747 req->rq_svc_ctx, &flavor);
1750 /* if it equals to the current flavor, we accept it, but need to
1751 * dealing with reverse sec/ctx */
1752 if (likely(flavor_allowed(&exp->exp_flvr, req))) {
1753 /* most cases should return here, we only interested in
1754 * gss root ctx init */
1755 if (!req->rq_auth_gss || !req->rq_ctx_init ||
1756 (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt)) {
1757 spin_unlock(&exp->exp_lock);
1761 /* if flavor just changed, we should not proceed, just leave
1762 * it and current flavor will be discovered and replaced
1763 * shortly, and let _this_ rpc pass through */
1764 if (exp->exp_flvr_changed) {
1765 LASSERT(exp->exp_flvr_adapt);
1766 spin_unlock(&exp->exp_lock);
1770 if (exp->exp_flvr_adapt) {
1771 exp->exp_flvr_adapt = 0;
1772 CDEBUG(D_SEC, "exp %p (%x|%x|%x): do delayed adapt\n",
1773 exp, exp->exp_flvr.sf_rpc,
1774 exp->exp_flvr_old[0].sf_rpc,
1775 exp->exp_flvr_old[1].sf_rpc);
1776 flavor = exp->exp_flvr;
1777 spin_unlock(&exp->exp_lock);
1779 return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
1783 CDEBUG(D_SEC, "exp %p (%x|%x|%x): is current flavor, "
1784 "install rvs ctx\n", exp, exp->exp_flvr.sf_rpc,
1785 exp->exp_flvr_old[0].sf_rpc,
1786 exp->exp_flvr_old[1].sf_rpc);
1787 spin_unlock(&exp->exp_lock);
1789 return sptlrpc_svc_install_rvs_ctx(exp->exp_imp_reverse,
1794 if (exp->exp_flvr_expire[0]) {
1795 if (exp->exp_flvr_expire[0] >= cfs_time_current_sec()) {
1796 if (flavor_allowed(&exp->exp_flvr_old[0], req)) {
1797 CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the "
1798 "middle one ("CFS_DURATION_T")\n", exp,
1799 exp->exp_flvr.sf_rpc,
1800 exp->exp_flvr_old[0].sf_rpc,
1801 exp->exp_flvr_old[1].sf_rpc,
1802 exp->exp_flvr_expire[0] -
1803 cfs_time_current_sec());
1804 spin_unlock(&exp->exp_lock);
1808 CDEBUG(D_SEC, "mark middle expired\n");
1809 exp->exp_flvr_expire[0] = 0;
1811 CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match middle\n", exp,
1812 exp->exp_flvr.sf_rpc,
1813 exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
1814 req->rq_flvr.sf_rpc);
1817 /* now it doesn't match the current flavor, the only chance we can
1818 * accept it is match the old flavors which is not expired. */
1819 if (exp->exp_flvr_changed == 0 && exp->exp_flvr_expire[1]) {
1820 if (exp->exp_flvr_expire[1] >= cfs_time_current_sec()) {
1821 if (flavor_allowed(&exp->exp_flvr_old[1], req)) {
1822 CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the "
1823 "oldest one ("CFS_DURATION_T")\n", exp,
1824 exp->exp_flvr.sf_rpc,
1825 exp->exp_flvr_old[0].sf_rpc,
1826 exp->exp_flvr_old[1].sf_rpc,
1827 exp->exp_flvr_expire[1] -
1828 cfs_time_current_sec());
1829 spin_unlock(&exp->exp_lock);
1833 CDEBUG(D_SEC, "mark oldest expired\n");
1834 exp->exp_flvr_expire[1] = 0;
1836 CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match found\n",
1837 exp, exp->exp_flvr.sf_rpc,
1838 exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
1839 req->rq_flvr.sf_rpc);
1841 CDEBUG(D_SEC, "exp %p (%x|%x|%x): skip the last one\n",
1842 exp, exp->exp_flvr.sf_rpc, exp->exp_flvr_old[0].sf_rpc,
1843 exp->exp_flvr_old[1].sf_rpc);
1846 spin_unlock(&exp->exp_lock);
1848 CWARN("exp %p(%s): req %p (%u|%u|%u|%u|%u) with "
1849 "unauthorized flavor %x, expect %x|%x(%+ld)|%x(%+ld)\n",
1850 exp, exp->exp_obd->obd_name,
1851 req, req->rq_auth_gss, req->rq_ctx_init, req->rq_ctx_fini,
1852 req->rq_auth_usr_root, req->rq_auth_usr_mdt, req->rq_flvr.sf_rpc,
1853 exp->exp_flvr.sf_rpc,
1854 exp->exp_flvr_old[0].sf_rpc,
1855 exp->exp_flvr_expire[0] ?
1856 (unsigned long) (exp->exp_flvr_expire[0] -
1857 cfs_time_current_sec()) : 0,
1858 exp->exp_flvr_old[1].sf_rpc,
1859 exp->exp_flvr_expire[1] ?
1860 (unsigned long) (exp->exp_flvr_expire[1] -
1861 cfs_time_current_sec()) : 0);
1864 EXPORT_SYMBOL(sptlrpc_target_export_check);
1866 void sptlrpc_target_update_exp_flavor(struct obd_device *obd,
1867 struct sptlrpc_rule_set *rset)
1869 struct obd_export *exp;
1870 struct sptlrpc_flavor new_flvr;
1874 spin_lock(&obd->obd_dev_lock);
1876 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
1877 if (exp->exp_connection == NULL)
1880 /* note if this export had just been updated flavor
1881 * (exp_flvr_changed == 1), this will override the
1883 spin_lock(&exp->exp_lock);
1884 sptlrpc_target_choose_flavor(rset, exp->exp_sp_peer,
1885 exp->exp_connection->c_peer.nid,
1887 if (exp->exp_flvr_changed ||
1888 !flavor_equal(&new_flvr, &exp->exp_flvr)) {
1889 exp->exp_flvr_old[1] = new_flvr;
1890 exp->exp_flvr_expire[1] = 0;
1891 exp->exp_flvr_changed = 1;
1892 exp->exp_flvr_adapt = 1;
1894 CDEBUG(D_SEC, "exp %p (%s): updated flavor %x->%x\n",
1895 exp, sptlrpc_part2name(exp->exp_sp_peer),
1896 exp->exp_flvr.sf_rpc,
1897 exp->exp_flvr_old[1].sf_rpc);
1899 spin_unlock(&exp->exp_lock);
1902 spin_unlock(&obd->obd_dev_lock);
1904 EXPORT_SYMBOL(sptlrpc_target_update_exp_flavor);
1906 static int sptlrpc_svc_check_from(struct ptlrpc_request *req, int svc_rc)
1908 if (svc_rc == SECSVC_DROP)
1911 switch (req->rq_sp_from) {
1920 DEBUG_REQ(D_ERROR, req, "invalid source %u", req->rq_sp_from);
1924 if (!req->rq_auth_gss)
1927 if (unlikely(req->rq_sp_from == LUSTRE_SP_ANY)) {
1928 CERROR("not specific part\n");
1932 /* from MDT, must be authenticated as MDT */
1933 if (unlikely(req->rq_sp_from == LUSTRE_SP_MDT &&
1934 !req->rq_auth_usr_mdt)) {
1935 DEBUG_REQ(D_ERROR, req, "fake source MDT");
1939 /* from OST, must be callback to MDT and CLI, the reverse sec
1940 * was from mdt/root keytab, so it should be MDT or root FIXME */
1941 if (unlikely(req->rq_sp_from == LUSTRE_SP_OST &&
1942 !req->rq_auth_usr_mdt && !req->rq_auth_usr_root)) {
1943 DEBUG_REQ(D_ERROR, req, "fake source OST");
1950 int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req)
1952 struct ptlrpc_sec_policy *policy;
1953 struct lustre_msg *msg = req->rq_reqbuf;
1958 LASSERT(req->rq_reqmsg == NULL);
1959 LASSERT(req->rq_repmsg == NULL);
1960 LASSERT(req->rq_svc_ctx == NULL);
1962 req->rq_sp_from = LUSTRE_SP_ANY;
1963 req->rq_auth_uid = INVALID_UID;
1964 req->rq_auth_mapped_uid = INVALID_UID;
1966 if (req->rq_reqdata_len < sizeof(struct lustre_msg)) {
1967 CERROR("request size %d too small\n", req->rq_reqdata_len);
1968 RETURN(SECSVC_DROP);
1972 * only expect v2 message.
1974 switch (msg->lm_magic) {
1975 case LUSTRE_MSG_MAGIC_V2:
1976 req->rq_flvr.sf_rpc = WIRE_FLVR(msg->lm_secflvr);
1978 case LUSTRE_MSG_MAGIC_V2_SWABBED:
1979 req->rq_flvr.sf_rpc = WIRE_FLVR(__swab32(msg->lm_secflvr));
1982 CERROR("invalid magic %x\n", msg->lm_magic);
1983 RETURN(SECSVC_DROP);
1986 /* unpack the wrapper message if the policy is not null */
1987 if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL &&
1988 lustre_unpack_msg(msg, req->rq_reqdata_len)) {
1989 CERROR("invalid wrapper msg format\n");
1990 RETURN(SECSVC_DROP);
1993 policy = sptlrpc_wireflavor2policy(req->rq_flvr.sf_rpc);
1995 CERROR("unsupported rpc flavor %x\n", req->rq_flvr.sf_rpc);
1996 RETURN(SECSVC_DROP);
1999 LASSERT(policy->sp_sops->accept);
2000 rc = policy->sp_sops->accept(req);
2002 LASSERT(req->rq_reqmsg || rc != SECSVC_OK);
2003 LASSERT(req->rq_svc_ctx || rc == SECSVC_DROP);
2004 sptlrpc_policy_put(policy);
2006 /* sanity check for the request source */
2007 rc = sptlrpc_svc_check_from(req, rc);
2011 int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req,
2014 struct ptlrpc_sec_policy *policy;
2015 struct ptlrpc_reply_state *rs;
2019 LASSERT(req->rq_svc_ctx);
2020 LASSERT(req->rq_svc_ctx->sc_policy);
2022 policy = req->rq_svc_ctx->sc_policy;
2023 LASSERT(policy->sp_sops->alloc_rs);
2025 rc = policy->sp_sops->alloc_rs(req, msglen);
2026 if (unlikely(rc == -ENOMEM)) {
2027 /* failed alloc, try emergency pool */
2028 rs = lustre_get_emerg_rs(req->rq_rqbd->rqbd_service);
2032 req->rq_reply_state = rs;
2033 rc = policy->sp_sops->alloc_rs(req, msglen);
2035 lustre_put_emerg_rs(rs);
2036 req->rq_reply_state = NULL;
2041 (req->rq_reply_state && req->rq_reply_state->rs_msg));
2046 int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req)
2048 struct ptlrpc_sec_policy *policy;
2052 LASSERT(req->rq_svc_ctx);
2053 LASSERT(req->rq_svc_ctx->sc_policy);
2055 policy = req->rq_svc_ctx->sc_policy;
2056 LASSERT(policy->sp_sops->authorize);
2058 rc = policy->sp_sops->authorize(req);
2059 LASSERT(rc || req->rq_reply_state->rs_repdata_len);
2064 void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs)
2066 struct ptlrpc_sec_policy *policy;
2067 unsigned int prealloc;
2070 LASSERT(rs->rs_svc_ctx);
2071 LASSERT(rs->rs_svc_ctx->sc_policy);
2073 policy = rs->rs_svc_ctx->sc_policy;
2074 LASSERT(policy->sp_sops->free_rs);
2076 prealloc = rs->rs_prealloc;
2077 policy->sp_sops->free_rs(rs);
2080 lustre_put_emerg_rs(rs);
2084 void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req)
2086 struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
2091 LASSERT(atomic_read(&ctx->sc_refcount) > 0);
2092 atomic_inc(&ctx->sc_refcount);
2095 void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req)
2097 struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
2102 LASSERT(atomic_read(&ctx->sc_refcount) > 0);
2103 if (atomic_dec_and_test(&ctx->sc_refcount)) {
2104 if (ctx->sc_policy->sp_sops->free_ctx)
2105 ctx->sc_policy->sp_sops->free_ctx(ctx);
2107 req->rq_svc_ctx = NULL;
2110 void sptlrpc_svc_ctx_invalidate(struct ptlrpc_request *req)
2112 struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
2117 LASSERT(atomic_read(&ctx->sc_refcount) > 0);
2118 if (ctx->sc_policy->sp_sops->invalidate_ctx)
2119 ctx->sc_policy->sp_sops->invalidate_ctx(ctx);
2121 EXPORT_SYMBOL(sptlrpc_svc_ctx_invalidate);
2123 /****************************************
2125 ****************************************/
2127 int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req,
2128 struct ptlrpc_bulk_desc *desc)
2130 struct ptlrpc_cli_ctx *ctx;
2132 LASSERT(req->rq_bulk_read || req->rq_bulk_write);
2134 if (!req->rq_pack_bulk)
2137 ctx = req->rq_cli_ctx;
2138 if (ctx->cc_ops->wrap_bulk)
2139 return ctx->cc_ops->wrap_bulk(ctx, req, desc);
2142 EXPORT_SYMBOL(sptlrpc_cli_wrap_bulk);
2145 * return nob of actual plain text size received, or error code.
2147 int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req,
2148 struct ptlrpc_bulk_desc *desc,
2151 struct ptlrpc_cli_ctx *ctx;
2154 LASSERT(req->rq_bulk_read && !req->rq_bulk_write);
2156 if (!req->rq_pack_bulk)
2157 return desc->bd_nob_transferred;
2159 ctx = req->rq_cli_ctx;
2160 if (ctx->cc_ops->unwrap_bulk) {
2161 rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
2165 return desc->bd_nob_transferred;
2167 EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_read);
2170 * return 0 for success or error code.
2172 int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req,
2173 struct ptlrpc_bulk_desc *desc)
2175 struct ptlrpc_cli_ctx *ctx;
2178 LASSERT(!req->rq_bulk_read && req->rq_bulk_write);
2180 if (!req->rq_pack_bulk)
2183 ctx = req->rq_cli_ctx;
2184 if (ctx->cc_ops->unwrap_bulk) {
2185 rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
2191 * if everything is going right, nob should equals to nob_transferred.
2192 * in case of privacy mode, nob_transferred needs to be adjusted.
2194 if (desc->bd_nob != desc->bd_nob_transferred) {
2195 CERROR("nob %d doesn't match transferred nob %d",
2196 desc->bd_nob, desc->bd_nob_transferred);
2202 EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_write);
2204 int sptlrpc_svc_wrap_bulk(struct ptlrpc_request *req,
2205 struct ptlrpc_bulk_desc *desc)
2207 struct ptlrpc_svc_ctx *ctx;
2209 LASSERT(req->rq_bulk_read);
2211 if (!req->rq_pack_bulk)
2214 ctx = req->rq_svc_ctx;
2215 if (ctx->sc_policy->sp_sops->wrap_bulk)
2216 return ctx->sc_policy->sp_sops->wrap_bulk(req, desc);
2220 EXPORT_SYMBOL(sptlrpc_svc_wrap_bulk);
2222 int sptlrpc_svc_unwrap_bulk(struct ptlrpc_request *req,
2223 struct ptlrpc_bulk_desc *desc)
2225 struct ptlrpc_svc_ctx *ctx;
2228 LASSERT(req->rq_bulk_write);
2230 if (desc->bd_nob_transferred != desc->bd_nob &&
2231 SPTLRPC_FLVR_BULK_SVC(req->rq_flvr.sf_rpc) !=
2232 SPTLRPC_BULK_SVC_PRIV) {
2233 DEBUG_REQ(D_ERROR, req, "truncated bulk GET %d(%d)",
2234 desc->bd_nob_transferred, desc->bd_nob);
2238 if (!req->rq_pack_bulk)
2241 ctx = req->rq_svc_ctx;
2242 if (ctx->sc_policy->sp_sops->unwrap_bulk) {
2243 rc = ctx->sc_policy->sp_sops->unwrap_bulk(req, desc);
2245 CERROR("error unwrap bulk: %d\n", rc);
2248 /* return 0 to allow reply be sent */
2251 EXPORT_SYMBOL(sptlrpc_svc_unwrap_bulk);
2253 int sptlrpc_svc_prep_bulk(struct ptlrpc_request *req,
2254 struct ptlrpc_bulk_desc *desc)
2256 struct ptlrpc_svc_ctx *ctx;
2258 LASSERT(req->rq_bulk_write);
2260 if (!req->rq_pack_bulk)
2263 ctx = req->rq_svc_ctx;
2264 if (ctx->sc_policy->sp_sops->prep_bulk)
2265 return ctx->sc_policy->sp_sops->prep_bulk(req, desc);
2269 EXPORT_SYMBOL(sptlrpc_svc_prep_bulk);
2271 /****************************************
2272 * user descriptor helpers *
2273 ****************************************/
2275 int sptlrpc_current_user_desc_size(void)
2280 ngroups = current_ngroups;
2282 if (ngroups > LUSTRE_MAX_GROUPS)
2283 ngroups = LUSTRE_MAX_GROUPS;
2287 return sptlrpc_user_desc_size(ngroups);
2289 EXPORT_SYMBOL(sptlrpc_current_user_desc_size);
2291 int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset)
2293 struct ptlrpc_user_desc *pud;
2295 pud = lustre_msg_buf(msg, offset, 0);
2297 pud->pud_uid = cfs_current()->uid;
2298 pud->pud_gid = cfs_current()->gid;
2299 pud->pud_fsuid = cfs_current()->fsuid;
2300 pud->pud_fsgid = cfs_current()->fsgid;
2301 pud->pud_cap = cfs_curproc_cap_pack();
2302 pud->pud_ngroups = (msg->lm_buflens[offset] - sizeof(*pud)) / 4;
2306 if (pud->pud_ngroups > current_ngroups)
2307 pud->pud_ngroups = current_ngroups;
2308 memcpy(pud->pud_groups, cfs_current()->group_info->blocks[0],
2309 pud->pud_ngroups * sizeof(__u32));
2310 task_unlock(current);
2315 EXPORT_SYMBOL(sptlrpc_pack_user_desc);
2317 int sptlrpc_unpack_user_desc(struct lustre_msg *msg, int offset)
2319 struct ptlrpc_user_desc *pud;
2322 pud = lustre_msg_buf(msg, offset, sizeof(*pud));
2326 if (lustre_msg_swabbed(msg)) {
2327 __swab32s(&pud->pud_uid);
2328 __swab32s(&pud->pud_gid);
2329 __swab32s(&pud->pud_fsuid);
2330 __swab32s(&pud->pud_fsgid);
2331 __swab32s(&pud->pud_cap);
2332 __swab32s(&pud->pud_ngroups);
2335 if (pud->pud_ngroups > LUSTRE_MAX_GROUPS) {
2336 CERROR("%u groups is too large\n", pud->pud_ngroups);
2340 if (sizeof(*pud) + pud->pud_ngroups * sizeof(__u32) >
2341 msg->lm_buflens[offset]) {
2342 CERROR("%u groups are claimed but bufsize only %u\n",
2343 pud->pud_ngroups, msg->lm_buflens[offset]);
2347 if (lustre_msg_swabbed(msg)) {
2348 for (i = 0; i < pud->pud_ngroups; i++)
2349 __swab32s(&pud->pud_groups[i]);
2354 EXPORT_SYMBOL(sptlrpc_unpack_user_desc);
2356 /****************************************
2358 ****************************************/
2360 const char * sec2target_str(struct ptlrpc_sec *sec)
2362 if (!sec || !sec->ps_import || !sec->ps_import->imp_obd)
2364 if (sec_is_reverse(sec))
2366 return obd_uuid2str(&sec->ps_import->imp_obd->u.cli.cl_target_uuid);
2368 EXPORT_SYMBOL(sec2target_str);
2371 * return true if the bulk data is protected
2373 int sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr)
2375 switch (SPTLRPC_FLVR_BULK_SVC(flvr->sf_rpc)) {
2376 case SPTLRPC_BULK_SVC_INTG:
2377 case SPTLRPC_BULK_SVC_PRIV:
2383 EXPORT_SYMBOL(sptlrpc_flavor_has_bulk);
2385 /****************************************
2386 * crypto API helper/alloc blkciper *
2387 ****************************************/
2389 /****************************************
2390 * initialize/finalize *
2391 ****************************************/
2393 int __init sptlrpc_init(void)
2397 rwlock_init(&policy_lock);
2399 rc = sptlrpc_gc_init();
2403 rc = sptlrpc_conf_init();
2407 rc = sptlrpc_enc_pool_init();
2411 rc = sptlrpc_null_init();
2415 rc = sptlrpc_plain_init();
2419 rc = sptlrpc_lproc_init();
2426 sptlrpc_plain_fini();
2428 sptlrpc_null_fini();
2430 sptlrpc_enc_pool_fini();
2432 sptlrpc_conf_fini();
2439 void __exit sptlrpc_fini(void)
2441 sptlrpc_lproc_fini();
2442 sptlrpc_plain_fini();
2443 sptlrpc_null_fini();
2444 sptlrpc_enc_pool_fini();
2445 sptlrpc_conf_fini();