1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Modifications for Lustre
5 * Copyright 2004, Cluster File Systems, Inc.
7 * Author: Eric Mei <ericm@clusterfs.com>
11 * Neil Brown <neilb@cse.unsw.edu.au>
12 * J. Bruce Fields <bfields@umich.edu>
13 * Andy Adamson <andros@umich.edu>
14 * Dug Song <dugsong@monkey.org>
16 * RPCSEC_GSS server authentication.
17 * This implements RPCSEC_GSS as defined in rfc2203 (rpcsec_gss) and rfc2078
20 * The RPCSEC_GSS involves three stages:
23 * 3/ context destruction
25 * Context creation is handled largely by upcalls to user-space.
26 * In particular, GSS_Accept_sec_context is handled by an upcall
27 * Data exchange is handled entirely within the kernel
28 * In particular, GSS_GetMIC, GSS_VerifyMIC, GSS_Seal, GSS_Unseal are in-kernel.
29 * Context destruction is handled in-kernel
30 * GSS_Delete_sec_context is in-kernel
32 * Context creation is initiated by a RPCSEC_GSS_INIT request arriving.
33 * The context handle and gss_token are used as a key into the rpcsec_init cache.
34 * The content of this cache includes some of the outputs of GSS_Accept_sec_context,
35 * being major_status, minor_status, context_handle, reply_token.
36 * These are sent back to the client.
37 * Sequence window management is handled by the kernel. The window size if currently
38 * a compile time constant.
40 * When user-space is happy that a context is established, it places an entry
41 * in the rpcsec_context cache. The key for this cache is the context_handle.
42 * The content includes:
43 * uid/gidlist - for determining access rights
45 * mechanism specific information, such as a key
49 #define DEBUG_SUBSYSTEM S_SEC
51 #include <linux/types.h>
52 #include <linux/init.h>
53 #include <linux/module.h>
54 #include <linux/slab.h>
55 #include <linux/hash.h>
57 #include <liblustre.h>
60 #include <linux/sunrpc/cache.h>
62 #include <libcfs/kp30.h>
63 #include <linux/obd.h>
64 #include <linux/obd_class.h>
65 #include <linux/obd_support.h>
66 #include <linux/lustre_idl.h>
67 #include <linux/lustre_net.h>
68 #include <linux/lustre_import.h>
69 #include <linux/lustre_sec.h>
72 #include "gss_internal.h"
75 static inline unsigned long hash_mem(char *buf, int length, int bits)
77 unsigned long hash = 0;
83 c = (char)len; len = -1;
88 if ((len & (BITS_PER_LONG/8-1))==0)
89 hash = hash_long(hash^l, BITS_PER_LONG);
91 return hash >> (BITS_PER_LONG - bits);
94 /* The rpcsec_init cache is used for mapping RPCSEC_GSS_{,CONT_}INIT requests
97 * Key is context handle (\x if empty) and gss_token.
98 * Content is major_status minor_status (integers) context_handle, reply_token.
102 #define RSI_HASHBITS 6
103 #define RSI_HASHMAX (1<<RSI_HASHBITS)
104 #define RSI_HASHMASK (RSI_HASHMAX-1)
112 rawobj_t in_handle, in_token, in_srv_type;
113 rawobj_t out_handle, out_token;
114 int major_status, minor_status;
117 static struct cache_head *rsi_table[RSI_HASHMAX];
118 static struct cache_detail rsi_cache;
120 static void rsi_free(struct rsi *rsii)
122 rawobj_free(&rsii->in_handle);
123 rawobj_free(&rsii->in_token);
124 rawobj_free(&rsii->out_handle);
125 rawobj_free(&rsii->out_token);
128 static void rsi_put(struct cache_head *item, struct cache_detail *cd)
130 struct rsi *rsii = container_of(item, struct rsi, h);
131 LASSERT(atomic_read(&item->refcnt) > 0);
132 if (cache_put(item, cd)) {
133 LASSERT(item->next == NULL);
135 OBD_FREE(rsii, sizeof(*rsii));
139 static inline int rsi_hash(struct rsi *item)
141 return hash_mem((char *)item->in_handle.data, item->in_handle.len, RSI_HASHBITS)
142 ^ hash_mem((char *)item->in_token.data, item->in_token.len, RSI_HASHBITS);
145 static inline int rsi_match(struct rsi *item, struct rsi *tmp)
147 return (rawobj_equal(&item->in_handle, &tmp->in_handle) &&
148 rawobj_equal(&item->in_token, &tmp->in_token));
151 static void rsi_request(struct cache_detail *cd,
152 struct cache_head *h,
153 char **bpp, int *blen)
155 struct rsi *rsii = container_of(h, struct rsi, h);
157 qword_addhex(bpp, blen, (char *) &rsii->lustre_svc,
158 sizeof(rsii->lustre_svc));
159 qword_addhex(bpp, blen, (char *) &rsii->naltype, sizeof(rsii->naltype));
160 qword_addhex(bpp, blen, (char *) &rsii->netid, sizeof(rsii->netid));
161 qword_addhex(bpp, blen, (char *) &rsii->nid, sizeof(rsii->nid));
162 qword_addhex(bpp, blen, rsii->in_handle.data, rsii->in_handle.len);
163 qword_addhex(bpp, blen, rsii->in_token.data, rsii->in_token.len);
168 gssd_reply(struct rsi *item)
171 struct cache_head **hp, **head;
174 head = &rsi_cache.hash_table[rsi_hash(item)];
175 write_lock(&rsi_cache.hash_lock);
176 for (hp = head; *hp != NULL; hp = &tmp->h.next) {
177 tmp = container_of(*hp, struct rsi, h);
178 if (rsi_match(tmp, item)) {
180 clear_bit(CACHE_HASHED, &tmp->h.flags);
184 if (test_bit(CACHE_VALID, &tmp->h.flags)) {
185 CERROR("rsi is valid\n");
186 write_unlock(&rsi_cache.hash_lock);
187 rsi_put(&tmp->h, &rsi_cache);
190 set_bit(CACHE_HASHED, &item->h.flags);
194 set_bit(CACHE_VALID, &item->h.flags);
195 item->h.last_refresh = get_seconds();
196 write_unlock(&rsi_cache.hash_lock);
197 cache_fresh(&rsi_cache, &tmp->h, 0);
198 rsi_put(&tmp->h, &rsi_cache);
202 write_unlock(&rsi_cache.hash_lock);
207 * here we just wait here for its completion or timedout. it's a
208 * hacking but works, and we'll comeup with real fix if we decided
209 * to still stick with NFS4 cache code
212 gssd_upcall(struct rsi *item, struct cache_req *chandle)
215 struct cache_head **hp, **head;
216 unsigned long starttime;
219 head = &rsi_cache.hash_table[rsi_hash(item)];
220 read_lock(&rsi_cache.hash_lock);
221 for (hp = head; *hp != NULL; hp = &tmp->h.next) {
222 tmp = container_of(*hp, struct rsi, h);
223 if (rsi_match(tmp, item)) {
225 if (!test_bit(CACHE_VALID, &tmp->h.flags)) {
226 CERROR("found rsi without VALID\n");
227 read_unlock(&rsi_cache.hash_lock);
234 read_unlock(&rsi_cache.hash_lock);
239 set_bit(CACHE_HASHED, &item->h.flags);
240 item->h.next = *head;
243 read_unlock(&rsi_cache.hash_lock);
244 //cache_get(&item->h);
246 cache_check(&rsi_cache, &item->h, chandle);
247 starttime = get_seconds();
249 set_current_state(TASK_UNINTERRUPTIBLE);
250 schedule_timeout(HZ/2);
251 read_lock(&rsi_cache.hash_lock);
252 for (hp = head; *hp != NULL; hp = &tmp->h.next) {
253 tmp = container_of(*hp, struct rsi, h);
256 if (rsi_match(tmp, item)) {
257 if (!test_bit(CACHE_VALID, &tmp->h.flags)) {
258 read_unlock(&rsi_cache.hash_lock);
262 clear_bit(CACHE_HASHED, &tmp->h.flags);
266 read_unlock(&rsi_cache.hash_lock);
270 read_unlock(&rsi_cache.hash_lock);
271 } while ((get_seconds() - starttime) <= 15);
272 CERROR("15s timeout while waiting cache refill\n");
276 static int rsi_parse(struct cache_detail *cd,
277 char *mesg, int mlen)
279 /* context token expiry major minor context token */
285 int status = -EINVAL;
288 OBD_ALLOC(rsii, sizeof(*rsii));
291 cache_init(&rsii->h);
294 len = qword_get(&mesg, buf, mlen);
297 if (rawobj_alloc(&rsii->in_handle, buf, len)) {
303 len = qword_get(&mesg, buf, mlen);
306 if (rawobj_alloc(&rsii->in_token, buf, len)) {
312 expiry = get_expiry(&mesg);
317 len = qword_get(&mesg, buf, mlen);
320 rsii->major_status = simple_strtol(buf, &ep, 10);
325 len = qword_get(&mesg, buf, mlen);
328 rsii->minor_status = simple_strtol(buf, &ep, 10);
333 len = qword_get(&mesg, buf, mlen);
336 if (rawobj_alloc(&rsii->out_handle, buf, len)) {
342 len = qword_get(&mesg, buf, mlen);
345 if (rawobj_alloc(&rsii->out_token, buf, len)) {
350 rsii->h.expiry_time = expiry;
351 status = gssd_reply(rsii);
354 rsi_put(&rsii->h, &rsi_cache);
358 static struct cache_detail rsi_cache = {
359 .hash_size = RSI_HASHMAX,
360 .hash_table = rsi_table,
361 .name = "auth.ptlrpcs.init",
362 .cache_put = rsi_put,
363 .cache_request = rsi_request,
364 .cache_parse = rsi_parse,
368 * The rpcsec_context cache is used to store a context that is
369 * used in data exchange.
370 * The key is a context handle. The content is:
371 * uid, gidlist, mechanism, service-set, mech-specific-data
374 #define RSC_HASHBITS 10
375 #define RSC_HASHMAX (1<<RSC_HASHBITS)
376 #define RSC_HASHMASK (RSC_HASHMAX-1)
378 #define GSS_SEQ_WIN 512
380 struct gss_svc_seq_data {
381 /* highest seq number seen so far: */
383 /* for i such that sd_max-GSS_SEQ_WIN < i <= sd_max, the i-th bit of
384 * sd_win is nonzero iff sequence number i has been seen already: */
385 unsigned long sd_win[GSS_SEQ_WIN/BITS_PER_LONG];
392 __u32 remote_realm:1,
395 struct vfs_cred cred;
397 struct gss_svc_seq_data seqdata;
398 struct gss_ctx *mechctx;
401 static struct cache_head *rsc_table[RSC_HASHMAX];
402 static struct cache_detail rsc_cache;
404 static void rsc_free(struct rsc *rsci)
406 rawobj_free(&rsci->handle);
408 kgss_delete_sec_context(&rsci->mechctx);
410 if (rsci->cred.vc_ginfo)
411 put_group_info(rsci->cred.vc_ginfo);
415 static void rsc_put(struct cache_head *item, struct cache_detail *cd)
417 struct rsc *rsci = container_of(item, struct rsc, h);
419 LASSERT(atomic_read(&item->refcnt) > 0);
420 if (cache_put(item, cd)) {
421 LASSERT(item->next == NULL);
423 OBD_FREE(rsci, sizeof(*rsci));
428 rsc_hash(struct rsc *rsci)
430 return hash_mem((char *)rsci->handle.data,
431 rsci->handle.len, RSC_HASHBITS);
435 rsc_match(struct rsc *new, struct rsc *tmp)
437 return rawobj_equal(&new->handle, &tmp->handle);
440 static struct rsc *rsc_lookup(struct rsc *item, int set)
442 struct rsc *tmp = NULL;
443 struct cache_head **hp, **head;
444 head = &rsc_cache.hash_table[rsc_hash(item)];
448 write_lock(&rsc_cache.hash_lock);
450 read_lock(&rsc_cache.hash_lock);
451 for (hp = head; *hp != NULL; hp = &tmp->h.next) {
452 tmp = container_of(*hp, struct rsc, h);
453 if (!rsc_match(tmp, item))
460 clear_bit(CACHE_HASHED, &tmp->h.flags);
461 rsc_put(&tmp->h, &rsc_cache);
464 /* Didn't find anything */
469 set_bit(CACHE_HASHED, &item->h.flags);
470 item->h.next = *head;
472 write_unlock(&rsc_cache.hash_lock);
473 cache_fresh(&rsc_cache, &item->h, item->h.expiry_time);
479 read_unlock(&rsc_cache.hash_lock);
483 static int rsc_parse(struct cache_detail *cd,
484 char *mesg, int mlen)
486 /* contexthandle expiry [ uid gid N <n gids> mechname
487 * ...mechdata... ] */
489 int len, rv, tmp_int;
490 struct rsc *rsci, *res = NULL;
492 int status = -EINVAL;
494 OBD_ALLOC(rsci, sizeof(*rsci));
496 CERROR("fail to alloc rsci\n");
499 cache_init(&rsci->h);
502 len = qword_get(&mesg, buf, mlen);
503 if (len < 0) goto out;
505 if (rawobj_alloc(&rsci->handle, buf, len))
509 expiry = get_expiry(&mesg);
515 rv = get_int(&mesg, &tmp_int);
517 CERROR("fail to get remote flag\n");
520 rsci->remote_realm = (tmp_int != 0);
523 rv = get_int(&mesg, &tmp_int);
525 CERROR("fail to get mds user flag\n");
528 rsci->auth_usr_mds = (tmp_int != 0);
531 rv = get_int(&mesg, &tmp_int);
533 CERROR("fail to get oss user flag\n");
536 rsci->auth_usr_oss = (tmp_int != 0);
539 rv = get_int(&mesg, (int *)&rsci->mapped_uid);
541 CERROR("fail to get mapped uid\n");
545 /* uid, or NEGATIVE */
546 rv = get_int(&mesg, (int *)&rsci->cred.vc_uid);
550 CERROR("NOENT? set rsc entry negative\n");
551 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
553 struct gss_api_mech *gm;
558 if (get_int(&mesg, (int *)&rsci->cred.vc_gid))
562 len = qword_get(&mesg, buf, mlen);
565 gm = kgss_name_to_mech(buf);
566 status = -EOPNOTSUPP;
571 /* mech-specific data: */
572 len = qword_get(&mesg, buf, mlen);
578 tmp_buf.data = (unsigned char *)buf;
579 if (kgss_import_sec_context(&tmp_buf, gm, &rsci->mechctx)) {
584 /* currently the expiry time passed down from user-space
585 * is invalid, here we retrive it from mech.
587 if (kgss_inquire_context(rsci->mechctx, &ctx_expiry)) {
588 CERROR("unable to get expire time, drop it\n");
589 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
593 expiry = (time_t) ((__u32) ctx_expiry);
597 rsci->h.expiry_time = expiry;
598 spin_lock_init(&rsci->seqdata.sd_lock);
599 res = rsc_lookup(rsci, 1);
600 // XXX temp debugging
603 CWARN("create ctxt %p(%u), expiry %ld (%lds later)\n",
604 res, *((__u32 *) res->handle.data),
606 res->h.expiry_time - get_seconds());
608 CWARN("create ctxts [%p(%u), ex %ld (%lds later)], "
609 "[%p(%u), ex %ld (%lds later)]\n",
610 rsci, *((__u32 *) rsci->handle.data),
612 rsci->h.expiry_time - get_seconds(),
613 res, *((__u32 *) res->handle.data),
615 res->h.expiry_time - get_seconds());
618 rsc_put(&res->h, &rsc_cache);
622 rsc_put(&rsci->h, &rsc_cache);
627 * flush all entries with @uid. @uid == -1 will match all.
628 * we only know the uid, maybe netid/nid in the future, in all cases
629 * we must search the whole cache
631 static void rsc_flush(uid_t uid)
633 struct cache_head **ch;
639 CWARN("flush all gss contexts\n");
641 write_lock(&rsc_cache.hash_lock);
642 for (n = 0; n < RSC_HASHMAX; n++) {
643 for (ch = &rsc_cache.hash_table[n]; *ch;) {
644 rscp = container_of(*ch, struct rsc, h);
645 if (uid == -1 || rscp->cred.vc_uid == uid) {
646 /* it seems simply set NEGATIVE doesn't work */
650 set_bit(CACHE_NEGATIVE, &rscp->h.flags);
651 clear_bit(CACHE_HASHED, &rscp->h.flags);
653 CWARN("flush rsc %p(%u) for uid %u\n",
655 *((__u32 *) rscp->handle.data),
657 rsc_put(&rscp->h, &rsc_cache);
664 write_unlock(&rsc_cache.hash_lock);
668 static struct cache_detail rsc_cache = {
669 .hash_size = RSC_HASHMAX,
670 .hash_table = rsc_table,
671 .name = "auth.ptlrpcs.context",
672 .cache_put = rsc_put,
673 .cache_parse = rsc_parse,
677 gss_svc_searchbyctx(rawobj_t *handle)
682 rsci.handle = *handle;
683 found = rsc_lookup(&rsci, 0);
687 if (cache_check(&rsc_cache, &found->h, NULL))
694 * again hacking: only try to give the svcgssd a chance to handle
697 struct cache_deferred_req* my_defer(struct cache_req *req)
702 static struct cache_req my_chandle = {my_defer};
704 /* Implements sequence number algorithm as specified in RFC 2203. */
706 gss_check_seq_num(struct gss_svc_seq_data *sd, __u32 seq_num)
710 spin_lock(&sd->sd_lock);
711 if (seq_num > sd->sd_max) {
712 if (seq_num >= sd->sd_max + GSS_SEQ_WIN) {
713 memset(sd->sd_win, 0, sizeof(sd->sd_win));
714 sd->sd_max = seq_num;
716 while(sd->sd_max < seq_num) {
718 __clear_bit(sd->sd_max % GSS_SEQ_WIN,
722 __set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win);
724 } else if (seq_num + GSS_SEQ_WIN <= sd->sd_max) {
725 CERROR("seq %u too low: max %u, win %d\n",
726 seq_num, sd->sd_max, GSS_SEQ_WIN);
731 if (__test_and_set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win)) {
732 CERROR("seq %u is replay: max %u, win %d\n",
733 seq_num, sd->sd_max, GSS_SEQ_WIN);
737 spin_unlock(&sd->sd_lock);
742 gss_svc_verify_request(struct ptlrpc_request *req,
744 struct rpc_gss_wire_cred *gc,
745 __u32 *vp, __u32 vlen)
747 struct ptlrpcs_wire_hdr *sec_hdr;
748 struct gss_ctx *ctx = rsci->mechctx;
754 sec_hdr = (struct ptlrpcs_wire_hdr *) req->rq_reqbuf;
756 req->rq_reqmsg = (struct lustre_msg *) (req->rq_reqbuf + sizeof(*sec_hdr));
757 req->rq_reqlen = sec_hdr->msg_len;
759 msg.len = sec_hdr->msg_len;
760 msg.data = (__u8 *)req->rq_reqmsg;
762 mic.len = le32_to_cpu(*vp++);
763 mic.data = (unsigned char *)vp;
766 if (mic.len > vlen) {
767 CERROR("checksum len %d, while buffer len %d\n",
769 RETURN(GSS_S_CALL_BAD_STRUCTURE);
773 CERROR("invalid mic len %d\n", mic.len);
774 RETURN(GSS_S_CALL_BAD_STRUCTURE);
777 maj_stat = kgss_verify_mic(ctx, &msg, &mic, NULL);
778 if (maj_stat != GSS_S_COMPLETE) {
779 CERROR("MIC verification error: major %x\n", maj_stat);
783 if (gss_check_seq_num(&rsci->seqdata, gc->gc_seq)) {
784 CERROR("discard replayed request %p(o%u,x"LPU64",t"LPU64")\n",
785 req, req->rq_reqmsg->opc, req->rq_xid,
786 req->rq_reqmsg->transno);
787 RETURN(GSS_S_DUPLICATE_TOKEN);
790 RETURN(GSS_S_COMPLETE);
794 gss_svc_unseal_request(struct ptlrpc_request *req,
796 struct rpc_gss_wire_cred *gc,
797 __u32 *vp, __u32 vlen)
799 struct ptlrpcs_wire_hdr *sec_hdr;
800 struct gss_ctx *ctx = rsci->mechctx;
801 rawobj_t cipher_text, plain_text;
805 sec_hdr = (struct ptlrpcs_wire_hdr *) req->rq_reqbuf;
808 CERROR("vlen only %u\n", vlen);
809 RETURN(GSS_S_CALL_BAD_STRUCTURE);
812 cipher_text.len = le32_to_cpu(*vp++);
813 cipher_text.data = (__u8 *) vp;
816 if (cipher_text.len > vlen) {
817 CERROR("cipher claimed %u while buf only %u\n",
818 cipher_text.len, vlen);
819 RETURN(GSS_S_CALL_BAD_STRUCTURE);
822 plain_text = cipher_text;
824 major = kgss_unwrap(ctx, GSS_C_QOP_DEFAULT, &cipher_text, &plain_text);
826 CERROR("unwrap error 0x%x\n", major);
830 if (gss_check_seq_num(&rsci->seqdata, gc->gc_seq)) {
831 CERROR("discard replayed request %p(o%u,x"LPU64",t"LPU64")\n",
832 req, req->rq_reqmsg->opc, req->rq_xid,
833 req->rq_reqmsg->transno);
834 RETURN(GSS_S_DUPLICATE_TOKEN);
837 req->rq_reqmsg = (struct lustre_msg *) (vp);
838 req->rq_reqlen = plain_text.len;
840 CDEBUG(D_SEC, "msg len %d\n", req->rq_reqlen);
842 RETURN(GSS_S_COMPLETE);
846 gss_pack_err_notify(struct ptlrpc_request *req,
847 __u32 major, __u32 minor)
849 struct gss_svc_data *svcdata = req->rq_svcsec_data;
850 __u32 reslen, *resp, *reslenp;
851 char nidstr[PTL_NALFMT_SIZE];
852 const __u32 secdata_len = 7 * 4;
856 OBD_FAIL_RETURN(OBD_FAIL_SVCGSS_ERR_NOTIFY|OBD_FAIL_ONCE, -EINVAL);
859 svcdata->is_err_notify = 1;
860 svcdata->reserve_len = 7 * 4;
862 rc = lustre_pack_reply(req, 0, NULL, NULL);
864 CERROR("could not pack reply, err %d\n", rc);
868 LASSERT(req->rq_reply_state);
869 LASSERT(req->rq_reply_state->rs_repbuf);
870 LASSERT(req->rq_reply_state->rs_repbuf_len >= secdata_len);
871 resp = (__u32 *) req->rq_reply_state->rs_repbuf;
874 *resp++ = cpu_to_le32(PTLRPCS_FLVR_GSS_NONE);
875 *resp++ = cpu_to_le32(PTLRPCS_SVC_NONE);
876 *resp++ = cpu_to_le32(req->rq_replen);
879 /* skip lustre msg */
880 resp += req->rq_replen / 4;
881 reslen = svcdata->reserve_len;
884 * version, subflavor, notify, major, minor,
885 * obj1(fake), obj2(fake)
887 *resp++ = cpu_to_le32(PTLRPC_SEC_GSS_VERSION);
888 *resp++ = cpu_to_le32(PTLRPCS_FLVR_KRB5I);
889 *resp++ = cpu_to_le32(PTLRPCS_GSS_PROC_ERR);
890 *resp++ = cpu_to_le32(major);
891 *resp++ = cpu_to_le32(minor);
895 /* the actual sec data length */
896 *reslenp = cpu_to_le32(secdata_len);
898 req->rq_reply_state->rs_repdata_len += (secdata_len);
899 CDEBUG(D_SEC, "prepare gss error notify(0x%x/0x%x) to %s\n",
901 portals_nid2str(req->rq_peer.peer_ni->pni_number,
902 req->rq_peer.peer_id.nid, nidstr));
906 static void dump_cache_head(struct cache_head *h)
908 CWARN("ref %d, fl %lx, n %p, t %ld, %ld\n",
909 atomic_read(&h->refcnt), h->flags, h->next,
910 h->expiry_time, h->last_refresh);
912 static void dump_rsi(struct rsi *rsi)
914 CWARN("dump rsi %p\n", rsi);
915 dump_cache_head(&rsi->h);
916 CWARN("%x,%x,%llx\n", rsi->naltype, rsi->netid, rsi->nid);
917 CWARN("len %d, d %p\n", rsi->in_handle.len, rsi->in_handle.data);
918 CWARN("len %d, d %p\n", rsi->in_token.len, rsi->in_token.data);
919 CWARN("len %d, d %p\n", rsi->out_handle.len, rsi->out_handle.data);
920 CWARN("len %d, d %p\n", rsi->out_token.len, rsi->out_token.data);
924 gss_svcsec_handle_init(struct ptlrpc_request *req,
925 struct rpc_gss_wire_cred *gc,
926 __u32 *secdata, __u32 seclen,
927 enum ptlrpcs_error *res)
929 struct gss_svc_data *svcdata = req->rq_svcsec_data;
931 struct rsi *rsikey, *rsip;
933 __u32 reslen, *resp, *reslenp;
934 char nidstr[PTL_NALFMT_SIZE];
940 CDEBUG(D_SEC, "processing gss init(%d) request from %s\n", gc->gc_proc,
941 portals_nid2str(req->rq_peer.peer_ni->pni_number,
942 req->rq_peer.peer_id.nid, nidstr));
944 *res = PTLRPCS_BADCRED;
945 OBD_FAIL_RETURN(OBD_FAIL_SVCGSS_INIT_REQ|OBD_FAIL_ONCE, SVC_DROP);
947 if (gc->gc_proc == RPC_GSS_PROC_INIT &&
948 gc->gc_ctx.len != 0) {
949 CERROR("proc %d, ctx_len %d: not really init?\n",
950 gc->gc_proc == RPC_GSS_PROC_INIT, gc->gc_ctx.len);
954 OBD_ALLOC(rsikey, sizeof(*rsikey));
956 CERROR("out of memory\n");
959 cache_init(&rsikey->h);
961 /* obtain lustre svc type */
963 CERROR("sec size %d too small\n", seclen);
964 GOTO(out_rsikey, rc = SVC_DROP);
966 rsikey->lustre_svc = le32_to_cpu(*secdata++);
969 /* duplicate context handle. currently always 0 */
970 if (rawobj_dup(&rsikey->in_handle, &gc->gc_ctx)) {
971 CERROR("fail to dup context handle\n");
972 GOTO(out_rsikey, rc = SVC_DROP);
976 *res = PTLRPCS_BADVERF;
977 if (rawobj_extract(&tmpobj, &secdata, &seclen)) {
978 CERROR("can't extract token\n");
979 GOTO(out_rsikey, rc = SVC_DROP);
981 if (rawobj_dup(&rsikey->in_token, &tmpobj)) {
982 CERROR("can't duplicate token\n");
983 GOTO(out_rsikey, rc = SVC_DROP);
986 rsikey->naltype = (__u32) req->rq_peer.peer_ni->pni_number;
988 rsikey->nid = (__u64) req->rq_peer.peer_id.nid;
990 rsip = gssd_upcall(rsikey, &my_chandle);
992 CERROR("error in gssd_upcall.\n");
995 if (gss_pack_err_notify(req, GSS_S_FAILURE, 0))
998 GOTO(out_rsikey, rc);
1001 rsci = gss_svc_searchbyctx(&rsip->out_handle);
1003 CERROR("rsci still not mature yet?\n");
1006 if (gss_pack_err_notify(req, GSS_S_FAILURE, 0))
1011 CDEBUG(D_SEC, "svcsec create gss context %p(%u@%s)\n",
1012 rsci, rsci->cred.vc_uid,
1013 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1014 req->rq_peer.peer_id.nid, nidstr));
1016 svcdata->is_init = 1;
1017 svcdata->reserve_len = 6 * 4 +
1018 size_round4(rsip->out_handle.len) +
1019 size_round4(rsip->out_token.len);
1021 rc = lustre_pack_reply(req, 0, NULL, NULL);
1023 CERROR("failed to pack reply, rc = %d\n", rc);
1024 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
1025 GOTO(out, rc = SVC_DROP);
1029 resp = (__u32 *) req->rq_reply_state->rs_repbuf;
1030 *resp++ = cpu_to_le32(PTLRPCS_FLVR_GSS_NONE);
1031 *resp++ = cpu_to_le32(PTLRPCS_SVC_NONE);
1032 *resp++ = cpu_to_le32(req->rq_replen);
1035 resp += req->rq_replen / 4;
1036 reslen = svcdata->reserve_len;
1039 * status, major, minor, seq, out_handle, out_token
1041 *resp++ = cpu_to_le32(PTLRPCS_OK);
1042 *resp++ = cpu_to_le32(rsip->major_status);
1043 *resp++ = cpu_to_le32(rsip->minor_status);
1044 *resp++ = cpu_to_le32(GSS_SEQ_WIN);
1046 if (rawobj_serialize(&rsip->out_handle,
1052 if (rawobj_serialize(&rsip->out_token,
1058 /* the actual sec data length */
1059 *reslenp = cpu_to_le32(svcdata->reserve_len - reslen);
1061 req->rq_reply_state->rs_repdata_len += le32_to_cpu(*reslenp);
1062 CDEBUG(D_SEC, "req %p: msgsize %d, authsize %d, "
1063 "total size %d\n", req, req->rq_replen,
1064 le32_to_cpu(*reslenp),
1065 req->rq_reply_state->rs_repdata_len);
1069 req->rq_remote_realm = rsci->remote_realm;
1070 req->rq_auth_usr_mds = rsci->auth_usr_mds;
1071 req->rq_auth_usr_oss = rsci->auth_usr_oss;
1072 req->rq_auth_uid = rsci->cred.vc_uid;
1073 req->rq_mapped_uid = rsci->mapped_uid;
1075 if (req->rq_auth_usr_mds) {
1076 CWARN("usr from %s authenticated as mds svc cred\n",
1077 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1078 req->rq_peer.peer_id.nid, nidstr));
1080 if (req->rq_auth_usr_oss) {
1081 CWARN("usr from %s authenticated as oss svc cred\n",
1082 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1083 req->rq_peer.peer_id.nid, nidstr));
1086 /* This is simplified since right now we doesn't support
1087 * INIT_CONTINUE yet.
1089 if (gc->gc_proc == RPC_GSS_PROC_INIT) {
1090 struct ptlrpcs_wire_hdr *hdr;
1092 hdr = buf_to_sec_hdr(req->rq_reqbuf);
1093 req->rq_reqmsg = buf_to_lustre_msg(req->rq_reqbuf);
1094 req->rq_reqlen = hdr->msg_len;
1101 rsc_put(&rsci->h, &rsc_cache);
1103 rsi_put(&rsip->h, &rsi_cache);
1105 rsi_put(&rsikey->h, &rsi_cache);
1111 gss_svcsec_handle_data(struct ptlrpc_request *req,
1112 struct rpc_gss_wire_cred *gc,
1113 __u32 *secdata, __u32 seclen,
1114 enum ptlrpcs_error *res)
1117 char nidstr[PTL_NALFMT_SIZE];
1122 *res = PTLRPCS_GSS_CREDPROBLEM;
1124 rsci = gss_svc_searchbyctx(&gc->gc_ctx);
1126 CWARN("Invalid gss context handle from %s\n",
1127 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1128 req->rq_peer.peer_id.nid, nidstr));
1129 major = GSS_S_NO_CONTEXT;
1133 switch (gc->gc_svc) {
1134 case PTLRPCS_GSS_SVC_INTEGRITY:
1135 major = gss_svc_verify_request(req, rsci, gc, secdata, seclen);
1136 if (major == GSS_S_COMPLETE)
1139 CWARN("fail in verify:0x%x: ctx %p@%s\n", major, rsci,
1140 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1141 req->rq_peer.peer_id.nid, nidstr));
1143 case PTLRPCS_GSS_SVC_PRIVACY:
1144 major = gss_svc_unseal_request(req, rsci, gc, secdata, seclen);
1145 if (major == GSS_S_COMPLETE)
1148 CWARN("fail in decrypt:0x%x: ctx %p@%s\n", major, rsci,
1149 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1150 req->rq_peer.peer_id.nid, nidstr));
1153 CERROR("unsupported gss service %d\n", gc->gc_svc);
1154 GOTO(out, rc = SVC_DROP);
1157 req->rq_remote_realm = rsci->remote_realm;
1158 req->rq_auth_usr_mds = rsci->auth_usr_mds;
1159 req->rq_auth_usr_oss = rsci->auth_usr_oss;
1160 req->rq_auth_uid = rsci->cred.vc_uid;
1161 req->rq_mapped_uid = rsci->mapped_uid;
1164 GOTO(out, rc = SVC_OK);
1167 if (gss_pack_err_notify(req, major, 0))
1173 rsc_put(&rsci->h, &rsc_cache);
1178 gss_svcsec_handle_destroy(struct ptlrpc_request *req,
1179 struct rpc_gss_wire_cred *gc,
1180 __u32 *secdata, __u32 seclen,
1181 enum ptlrpcs_error *res)
1183 struct gss_svc_data *svcdata = req->rq_svcsec_data;
1185 char nidstr[PTL_NALFMT_SIZE];
1190 *res = PTLRPCS_GSS_CREDPROBLEM;
1192 rsci = gss_svc_searchbyctx(&gc->gc_ctx);
1194 CWARN("invalid gss context handle for destroy.\n");
1198 if (gc->gc_svc != PTLRPCS_GSS_SVC_INTEGRITY) {
1199 CERROR("service %d is not supported in destroy.\n",
1201 GOTO(out, rc = SVC_DROP);
1204 *res = gss_svc_verify_request(req, rsci, gc, secdata, seclen);
1206 GOTO(out, rc = SVC_DROP);
1208 /* compose reply, which is actually nothing */
1209 svcdata->is_fini = 1;
1210 if (lustre_pack_reply(req, 0, NULL, NULL))
1211 GOTO(out, rc = SVC_DROP);
1213 CDEBUG(D_SEC, "svcsec destroy gss context %p(%u@%s)\n",
1214 rsci, rsci->cred.vc_uid,
1215 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1216 req->rq_peer.peer_id.nid, nidstr));
1218 //XXX temp for debugging
1220 CWARN("destroy ctxt %p(%u/%u)@%s\n",
1221 rsci, *((__u32 *) rsci->handle.data),
1223 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1224 req->rq_peer.peer_id.nid, nidstr));
1226 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
1230 rsc_put(&rsci->h, &rsc_cache);
1235 * let incomming request go through security check:
1236 * o context establishment: invoke user space helper
1237 * o data exchange: verify/decrypt
1238 * o context destruction: mark context invalid
1240 * in most cases, error will result to drop the packet silently.
1243 gss_svcsec_accept(struct ptlrpc_request *req, enum ptlrpcs_error *res)
1245 struct gss_svc_data *svcdata;
1246 struct rpc_gss_wire_cred *gc;
1247 struct ptlrpcs_wire_hdr *sec_hdr;
1248 __u32 subflavor, seclen, *secdata, version;
1252 CDEBUG(D_SEC, "request %p\n", req);
1253 LASSERT(req->rq_reqbuf);
1254 LASSERT(req->rq_reqbuf_len);
1256 *res = PTLRPCS_BADCRED;
1258 sec_hdr = buf_to_sec_hdr(req->rq_reqbuf);
1259 LASSERT(SEC_FLAVOR_MAJOR(sec_hdr->flavor) == PTLRPCS_FLVR_MAJOR_GSS);
1261 seclen = req->rq_reqbuf_len - sizeof(*sec_hdr) - sec_hdr->msg_len;
1262 secdata = (__u32 *) buf_to_sec_data(req->rq_reqbuf);
1264 if (sec_hdr->sec_len > seclen) {
1265 CERROR("seclen %d, while max buf %d\n",
1266 sec_hdr->sec_len, seclen);
1270 if (seclen < 6 * 4) {
1271 CERROR("sec size %d too small\n", seclen);
1275 LASSERT(!req->rq_svcsec_data);
1276 OBD_ALLOC(svcdata, sizeof(*svcdata));
1278 CERROR("fail to alloc svcdata\n");
1281 req->rq_svcsec_data = svcdata;
1282 gc = &svcdata->clcred;
1284 /* Now secdata/seclen is what we want to parse
1286 version = le32_to_cpu(*secdata++); /* version */
1287 subflavor = le32_to_cpu(*secdata++); /* subflavor */
1288 gc->gc_proc = le32_to_cpu(*secdata++); /* proc */
1289 gc->gc_seq = le32_to_cpu(*secdata++); /* seq */
1290 gc->gc_svc = le32_to_cpu(*secdata++); /* service */
1293 CDEBUG(D_SEC, "wire gss_hdr: %u/%u/%u/%u/%u\n",
1294 version, subflavor, gc->gc_proc,
1295 gc->gc_seq, gc->gc_svc);
1297 if (version != PTLRPC_SEC_GSS_VERSION) {
1298 CERROR("gss version mismatch: %d - %d\n",
1299 version, PTLRPC_SEC_GSS_VERSION);
1300 GOTO(err_free, rc = SVC_DROP);
1303 /* We _must_ alloc new storage for gc_ctx. In case of recovery
1304 * request will be saved to delayed handling, at that time the
1305 * incoming buffer might have already been released.
1307 if (rawobj_extract_alloc(&gc->gc_ctx, &secdata, &seclen)) {
1308 CERROR("fail to obtain gss context handle\n");
1309 GOTO(err_free, rc = SVC_DROP);
1312 *res = PTLRPCS_BADVERF;
1313 switch(gc->gc_proc) {
1314 case RPC_GSS_PROC_INIT:
1315 case RPC_GSS_PROC_CONTINUE_INIT:
1316 rc = gss_svcsec_handle_init(req, gc, secdata, seclen, res);
1318 case RPC_GSS_PROC_DATA:
1319 rc = gss_svcsec_handle_data(req, gc, secdata, seclen, res);
1321 case RPC_GSS_PROC_DESTROY:
1322 rc = gss_svcsec_handle_destroy(req, gc, secdata, seclen, res);
1330 if (rc == SVC_DROP && req->rq_svcsec_data) {
1331 OBD_FREE(req->rq_svcsec_data, sizeof(struct gss_svc_data));
1332 req->rq_svcsec_data = NULL;
1339 gss_svcsec_authorize(struct ptlrpc_request *req)
1341 struct ptlrpc_reply_state *rs = req->rq_reply_state;
1342 struct gss_svc_data *gsd = (struct gss_svc_data *)req->rq_svcsec_data;
1343 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1345 struct ptlrpcs_wire_hdr *sec_hdr;
1346 rawobj_buf_t msg_buf;
1347 rawobj_t cipher_buf;
1348 __u32 *vp, *vpsave, major, vlen, seclen;
1354 LASSERT(rs->rs_repbuf);
1357 if (gsd->is_init || gsd->is_init_continue ||
1358 gsd->is_err_notify || gsd->is_fini) {
1359 /* nothing to do in these cases */
1360 CDEBUG(D_SEC, "req %p: init/fini/err\n", req);
1364 if (gc->gc_proc != RPC_GSS_PROC_DATA) {
1365 CERROR("proc %d not support\n", gc->gc_proc);
1369 rscp = gss_svc_searchbyctx(&gc->gc_ctx);
1371 CERROR("ctx %u disapeared under us\n",
1372 *((__u32 *) gc->gc_ctx.data));
1376 sec_hdr = (struct ptlrpcs_wire_hdr *) rs->rs_repbuf;
1377 switch (gc->gc_svc) {
1378 case PTLRPCS_GSS_SVC_INTEGRITY:
1379 /* prepare various pointers */
1380 lmsg.len = req->rq_replen;
1381 lmsg.data = (__u8 *) (rs->rs_repbuf + sizeof(*sec_hdr));
1382 vp = (__u32 *) (lmsg.data + lmsg.len);
1383 vlen = rs->rs_repbuf_len - sizeof(*sec_hdr) - lmsg.len;
1386 sec_hdr->flavor = cpu_to_le32(PTLRPCS_FLVR_GSS_AUTH);
1387 sec_hdr->msg_len = cpu_to_le32(req->rq_replen);
1389 /* standard gss hdr */
1390 LASSERT(vlen >= 7 * 4);
1391 *vp++ = cpu_to_le32(PTLRPC_SEC_GSS_VERSION);
1392 *vp++ = cpu_to_le32(PTLRPCS_FLVR_KRB5I);
1393 *vp++ = cpu_to_le32(RPC_GSS_PROC_DATA);
1394 *vp++ = cpu_to_le32(gc->gc_seq);
1395 *vp++ = cpu_to_le32(PTLRPCS_GSS_SVC_INTEGRITY);
1396 *vp++ = 0; /* fake ctx handle */
1397 vpsave = vp++; /* reserve size */
1401 mic.data = (unsigned char *)vp;
1403 major = kgss_get_mic(rscp->mechctx, 0, &lmsg, &mic);
1405 CERROR("fail to get MIC: 0x%x\n", major);
1406 GOTO(out, ret = -EINVAL);
1408 *vpsave = cpu_to_le32(mic.len);
1409 seclen = seclen - vlen + mic.len;
1410 sec_hdr->sec_len = cpu_to_le32(seclen);
1411 rs->rs_repdata_len += size_round(seclen);
1413 case PTLRPCS_GSS_SVC_PRIVACY:
1414 vp = (__u32 *) (rs->rs_repbuf + sizeof(*sec_hdr));
1415 vlen = rs->rs_repbuf_len - sizeof(*sec_hdr);
1418 sec_hdr->flavor = cpu_to_le32(PTLRPCS_FLVR_GSS_PRIV);
1419 sec_hdr->msg_len = cpu_to_le32(0);
1421 /* standard gss hdr */
1422 LASSERT(vlen >= 7 * 4);
1423 *vp++ = cpu_to_le32(PTLRPC_SEC_GSS_VERSION);
1424 *vp++ = cpu_to_le32(PTLRPCS_FLVR_KRB5I);
1425 *vp++ = cpu_to_le32(RPC_GSS_PROC_DATA);
1426 *vp++ = cpu_to_le32(gc->gc_seq);
1427 *vp++ = cpu_to_le32(PTLRPCS_GSS_SVC_PRIVACY);
1428 *vp++ = 0; /* fake ctx handle */
1429 vpsave = vp++; /* reserve size */
1432 msg_buf.buf = (__u8 *) rs->rs_msg - GSS_PRIVBUF_PREFIX_LEN;
1433 msg_buf.buflen = req->rq_replen + GSS_PRIVBUF_PREFIX_LEN +
1434 GSS_PRIVBUF_SUFFIX_LEN;
1435 msg_buf.dataoff = GSS_PRIVBUF_PREFIX_LEN;
1436 msg_buf.datalen = req->rq_replen;
1438 cipher_buf.data = (__u8 *) vp;
1439 cipher_buf.len = vlen;
1441 major = kgss_wrap(rscp->mechctx, GSS_C_QOP_DEFAULT,
1442 &msg_buf, &cipher_buf);
1444 CERROR("failed to wrap: 0x%x\n", major);
1445 GOTO(out, ret = -EINVAL);
1448 *vpsave = cpu_to_le32(cipher_buf.len);
1449 seclen = seclen - vlen + cipher_buf.len;
1450 sec_hdr->sec_len = cpu_to_le32(seclen);
1451 rs->rs_repdata_len += size_round(seclen);
1454 CERROR("Unknown service %d\n", gc->gc_svc);
1455 GOTO(out, ret = -EINVAL);
1459 rsc_put(&rscp->h, &rsc_cache);
1465 void gss_svcsec_cleanup_req(struct ptlrpc_svcsec *svcsec,
1466 struct ptlrpc_request *req)
1468 struct gss_svc_data *gsd = (struct gss_svc_data *) req->rq_svcsec_data;
1471 CDEBUG(D_SEC, "no svc_data present. do nothing\n");
1475 /* gc_ctx is allocated, see gss_svcsec_accept() */
1476 rawobj_free(&gsd->clcred.gc_ctx);
1478 OBD_FREE(gsd, sizeof(*gsd));
1479 req->rq_svcsec_data = NULL;
1484 int gss_svcsec_est_payload(struct ptlrpc_svcsec *svcsec,
1485 struct ptlrpc_request *req,
1488 struct gss_svc_data *svcdata = req->rq_svcsec_data;
1491 /* just return the pre-set reserve_len for init/fini/err cases.
1494 if (svcdata->is_init) {
1495 CDEBUG(D_SEC, "is_init, reserver size %d(%d)\n",
1496 size_round(svcdata->reserve_len),
1497 svcdata->reserve_len);
1498 LASSERT(svcdata->reserve_len);
1499 LASSERT(svcdata->reserve_len % 4 == 0);
1500 RETURN(size_round(svcdata->reserve_len));
1501 } else if (svcdata->is_err_notify) {
1502 CDEBUG(D_SEC, "is_err_notify, reserver size %d(%d)\n",
1503 size_round(svcdata->reserve_len),
1504 svcdata->reserve_len);
1505 RETURN(size_round(svcdata->reserve_len));
1506 } else if (svcdata->is_fini) {
1507 CDEBUG(D_SEC, "is_fini, reserver size 0\n");
1510 if (svcdata->clcred.gc_svc == PTLRPCS_GSS_SVC_NONE ||
1511 svcdata->clcred.gc_svc == PTLRPCS_GSS_SVC_INTEGRITY)
1512 RETURN(size_round(GSS_MAX_AUTH_PAYLOAD));
1513 else if (svcdata->clcred.gc_svc == PTLRPCS_GSS_SVC_PRIVACY)
1514 RETURN(size_round16(GSS_MAX_AUTH_PAYLOAD + msgsize +
1515 GSS_PRIVBUF_PREFIX_LEN +
1516 GSS_PRIVBUF_SUFFIX_LEN));
1518 CERROR("unknown gss svc %u\n", svcdata->clcred.gc_svc);
1526 int gss_svcsec_alloc_repbuf(struct ptlrpc_svcsec *svcsec,
1527 struct ptlrpc_request *req,
1530 struct gss_svc_data *gsd = (struct gss_svc_data *) req->rq_svcsec_data;
1531 struct ptlrpc_reply_state *rs;
1532 int msg_payload, sec_payload;
1536 /* determine the security type: none/auth or priv, we have
1537 * different pack scheme for them.
1538 * init/fini/err will always be treated as none/auth.
1541 if (!gsd->is_init && !gsd->is_init_continue &&
1542 !gsd->is_fini && !gsd->is_err_notify &&
1543 gsd->clcred.gc_svc == PTLRPCS_GSS_SVC_PRIVACY)
1548 msg_payload = privacy ? 0 : msgsize;
1549 sec_payload = gss_svcsec_est_payload(svcsec, req, msgsize);
1551 rc = svcsec_alloc_reply_state(req, msg_payload, sec_payload);
1555 rs = req->rq_reply_state;
1557 rs->rs_msg_len = msgsize;
1560 /* we can choose to let msg simply point to the rear of the
1561 * buffer, which lead to buffer overlap when doing encryption.
1562 * usually it's ok and it indeed passed all existing tests.
1563 * but not sure if there will be subtle problems in the future.
1564 * so right now we choose to alloc another new buffer. we'll
1568 rs->rs_msg = (struct lustre_msg *)
1569 (rs->rs_repbuf + rs->rs_repbuf_len -
1570 msgsize - GSS_PRIVBUF_SUFFIX_LEN);
1574 msgsize += GSS_PRIVBUF_PREFIX_LEN + GSS_PRIVBUF_SUFFIX_LEN;
1575 OBD_ALLOC(msgbuf, msgsize);
1577 CERROR("can't alloc %d\n", msgsize);
1578 svcsec_free_reply_state(rs);
1579 req->rq_reply_state = NULL;
1582 rs->rs_msg = (struct lustre_msg *)
1583 (msgbuf + GSS_PRIVBUF_PREFIX_LEN);
1586 req->rq_repmsg = rs->rs_msg;
1592 void gss_svcsec_free_repbuf(struct ptlrpc_svcsec *svcsec,
1593 struct ptlrpc_reply_state *rs)
1595 unsigned long p1 = (unsigned long) rs->rs_msg;
1596 unsigned long p2 = (unsigned long) rs->rs_buf;
1598 LASSERT(rs->rs_buf);
1599 LASSERT(rs->rs_msg);
1600 LASSERT(rs->rs_msg_len);
1602 if (p1 < p2 || p1 >= p2 + rs->rs_buf_len) {
1603 char *start = (char*) rs->rs_msg - GSS_PRIVBUF_PREFIX_LEN;
1604 int size = rs->rs_msg_len + GSS_PRIVBUF_PREFIX_LEN +
1605 GSS_PRIVBUF_SUFFIX_LEN;
1606 OBD_FREE(start, size);
1609 svcsec_free_reply_state(rs);
1612 struct ptlrpc_svcsec svcsec_gss = {
1613 .pss_owner = THIS_MODULE,
1614 .pss_name = "svcsec.gss",
1615 .pss_flavor = PTLRPCS_FLVR_MAJOR_GSS,
1616 .accept = gss_svcsec_accept,
1617 .authorize = gss_svcsec_authorize,
1618 .alloc_repbuf = gss_svcsec_alloc_repbuf,
1619 .free_repbuf = gss_svcsec_free_repbuf,
1620 .cleanup_req = gss_svcsec_cleanup_req,
1624 void lgss_svc_cache_purge_all(void)
1626 cache_purge(&rsi_cache);
1627 cache_purge(&rsc_cache);
1629 EXPORT_SYMBOL(lgss_svc_cache_purge_all);
1631 void lgss_svc_cache_flush(__u32 uid)
1635 EXPORT_SYMBOL(lgss_svc_cache_flush);
1637 int gss_svc_init(void)
1641 rc = svcsec_register(&svcsec_gss);
1643 cache_register(&rsc_cache);
1644 cache_register(&rsi_cache);
1649 void gss_svc_exit(void)
1652 if ((rc = cache_unregister(&rsi_cache)))
1653 CERROR("unregister rsi cache: %d\n", rc);
1654 if ((rc = cache_unregister(&rsc_cache)))
1655 CERROR("unregister rsc cache: %d\n", rc);
1656 if ((rc = svcsec_unregister(&svcsec_gss)))
1657 CERROR("unregister svcsec_gss: %d\n", rc);