[ARM] S3C: Add UART FIFO selection during arch decompression
[linux-2.6/openmoko-kernel.git] / net / sunrpc / auth_gss / svcauth_gss.c
blob81ae3d62a0cc9010d4cc1b6e5de130ae64ca2a57
1 /*
2 * Neil Brown <neilb@cse.unsw.edu.au>
3 * J. Bruce Fields <bfields@umich.edu>
4 * Andy Adamson <andros@umich.edu>
5 * Dug Song <dugsong@monkey.org>
7 * RPCSEC_GSS server authentication.
8 * This implements RPCSEC_GSS as defined in rfc2203 (rpcsec_gss) and rfc2078
9 * (gssapi)
11 * The RPCSEC_GSS involves three stages:
12 * 1/ context creation
13 * 2/ data exchange
14 * 3/ context destruction
16 * Context creation is handled largely by upcalls to user-space.
17 * In particular, GSS_Accept_sec_context is handled by an upcall
18 * Data exchange is handled entirely within the kernel
19 * In particular, GSS_GetMIC, GSS_VerifyMIC, GSS_Seal, GSS_Unseal are in-kernel.
20 * Context destruction is handled in-kernel
21 * GSS_Delete_sec_context is in-kernel
23 * Context creation is initiated by a RPCSEC_GSS_INIT request arriving.
24 * The context handle and gss_token are used as a key into the rpcsec_init cache.
25 * The content of this cache includes some of the outputs of GSS_Accept_sec_context,
26 * being major_status, minor_status, context_handle, reply_token.
27 * These are sent back to the client.
28 * Sequence window management is handled by the kernel. The window size if currently
29 * a compile time constant.
31 * When user-space is happy that a context is established, it places an entry
32 * in the rpcsec_context cache. The key for this cache is the context_handle.
33 * The content includes:
34 * uid/gidlist - for determining access rights
35 * mechanism type
36 * mechanism specific information, such as a key
40 #include <linux/types.h>
41 #include <linux/module.h>
42 #include <linux/pagemap.h>
44 #include <linux/sunrpc/auth_gss.h>
45 #include <linux/sunrpc/gss_err.h>
46 #include <linux/sunrpc/svcauth.h>
47 #include <linux/sunrpc/svcauth_gss.h>
48 #include <linux/sunrpc/cache.h>
50 #ifdef RPC_DEBUG
51 # define RPCDBG_FACILITY RPCDBG_AUTH
52 #endif
54 /* The rpcsec_init cache is used for mapping RPCSEC_GSS_{,CONT_}INIT requests
55 * into replies.
57 * Key is context handle (\x if empty) and gss_token.
58 * Content is major_status minor_status (integers) context_handle, reply_token.
62 static int netobj_equal(struct xdr_netobj *a, struct xdr_netobj *b)
64 return a->len == b->len && 0 == memcmp(a->data, b->data, a->len);
67 #define RSI_HASHBITS 6
68 #define RSI_HASHMAX (1<<RSI_HASHBITS)
69 #define RSI_HASHMASK (RSI_HASHMAX-1)
71 struct rsi {
72 struct cache_head h;
73 struct xdr_netobj in_handle, in_token;
74 struct xdr_netobj out_handle, out_token;
75 int major_status, minor_status;
78 static struct cache_head *rsi_table[RSI_HASHMAX];
79 static struct cache_detail rsi_cache;
80 static struct rsi *rsi_update(struct rsi *new, struct rsi *old);
81 static struct rsi *rsi_lookup(struct rsi *item);
83 static void rsi_free(struct rsi *rsii)
85 kfree(rsii->in_handle.data);
86 kfree(rsii->in_token.data);
87 kfree(rsii->out_handle.data);
88 kfree(rsii->out_token.data);
91 static void rsi_put(struct kref *ref)
93 struct rsi *rsii = container_of(ref, struct rsi, h.ref);
94 rsi_free(rsii);
95 kfree(rsii);
98 static inline int rsi_hash(struct rsi *item)
100 return hash_mem(item->in_handle.data, item->in_handle.len, RSI_HASHBITS)
101 ^ hash_mem(item->in_token.data, item->in_token.len, RSI_HASHBITS);
104 static int rsi_match(struct cache_head *a, struct cache_head *b)
106 struct rsi *item = container_of(a, struct rsi, h);
107 struct rsi *tmp = container_of(b, struct rsi, h);
108 return netobj_equal(&item->in_handle, &tmp->in_handle)
109 && netobj_equal(&item->in_token, &tmp->in_token);
112 static int dup_to_netobj(struct xdr_netobj *dst, char *src, int len)
114 dst->len = len;
115 dst->data = (len ? kmemdup(src, len, GFP_KERNEL) : NULL);
116 if (len && !dst->data)
117 return -ENOMEM;
118 return 0;
121 static inline int dup_netobj(struct xdr_netobj *dst, struct xdr_netobj *src)
123 return dup_to_netobj(dst, src->data, src->len);
126 static void rsi_init(struct cache_head *cnew, struct cache_head *citem)
128 struct rsi *new = container_of(cnew, struct rsi, h);
129 struct rsi *item = container_of(citem, struct rsi, h);
131 new->out_handle.data = NULL;
132 new->out_handle.len = 0;
133 new->out_token.data = NULL;
134 new->out_token.len = 0;
135 new->in_handle.len = item->in_handle.len;
136 item->in_handle.len = 0;
137 new->in_token.len = item->in_token.len;
138 item->in_token.len = 0;
139 new->in_handle.data = item->in_handle.data;
140 item->in_handle.data = NULL;
141 new->in_token.data = item->in_token.data;
142 item->in_token.data = NULL;
145 static void update_rsi(struct cache_head *cnew, struct cache_head *citem)
147 struct rsi *new = container_of(cnew, struct rsi, h);
148 struct rsi *item = container_of(citem, struct rsi, h);
150 BUG_ON(new->out_handle.data || new->out_token.data);
151 new->out_handle.len = item->out_handle.len;
152 item->out_handle.len = 0;
153 new->out_token.len = item->out_token.len;
154 item->out_token.len = 0;
155 new->out_handle.data = item->out_handle.data;
156 item->out_handle.data = NULL;
157 new->out_token.data = item->out_token.data;
158 item->out_token.data = NULL;
160 new->major_status = item->major_status;
161 new->minor_status = item->minor_status;
164 static struct cache_head *rsi_alloc(void)
166 struct rsi *rsii = kmalloc(sizeof(*rsii), GFP_KERNEL);
167 if (rsii)
168 return &rsii->h;
169 else
170 return NULL;
173 static void rsi_request(struct cache_detail *cd,
174 struct cache_head *h,
175 char **bpp, int *blen)
177 struct rsi *rsii = container_of(h, struct rsi, h);
179 qword_addhex(bpp, blen, rsii->in_handle.data, rsii->in_handle.len);
180 qword_addhex(bpp, blen, rsii->in_token.data, rsii->in_token.len);
181 (*bpp)[-1] = '\n';
185 static int rsi_parse(struct cache_detail *cd,
186 char *mesg, int mlen)
188 /* context token expiry major minor context token */
189 char *buf = mesg;
190 char *ep;
191 int len;
192 struct rsi rsii, *rsip = NULL;
193 time_t expiry;
194 int status = -EINVAL;
196 memset(&rsii, 0, sizeof(rsii));
197 /* handle */
198 len = qword_get(&mesg, buf, mlen);
199 if (len < 0)
200 goto out;
201 status = -ENOMEM;
202 if (dup_to_netobj(&rsii.in_handle, buf, len))
203 goto out;
205 /* token */
206 len = qword_get(&mesg, buf, mlen);
207 status = -EINVAL;
208 if (len < 0)
209 goto out;
210 status = -ENOMEM;
211 if (dup_to_netobj(&rsii.in_token, buf, len))
212 goto out;
214 rsip = rsi_lookup(&rsii);
215 if (!rsip)
216 goto out;
218 rsii.h.flags = 0;
219 /* expiry */
220 expiry = get_expiry(&mesg);
221 status = -EINVAL;
222 if (expiry == 0)
223 goto out;
225 /* major/minor */
226 len = qword_get(&mesg, buf, mlen);
227 if (len <= 0)
228 goto out;
229 rsii.major_status = simple_strtoul(buf, &ep, 10);
230 if (*ep)
231 goto out;
232 len = qword_get(&mesg, buf, mlen);
233 if (len <= 0)
234 goto out;
235 rsii.minor_status = simple_strtoul(buf, &ep, 10);
236 if (*ep)
237 goto out;
239 /* out_handle */
240 len = qword_get(&mesg, buf, mlen);
241 if (len < 0)
242 goto out;
243 status = -ENOMEM;
244 if (dup_to_netobj(&rsii.out_handle, buf, len))
245 goto out;
247 /* out_token */
248 len = qword_get(&mesg, buf, mlen);
249 status = -EINVAL;
250 if (len < 0)
251 goto out;
252 status = -ENOMEM;
253 if (dup_to_netobj(&rsii.out_token, buf, len))
254 goto out;
255 rsii.h.expiry_time = expiry;
256 rsip = rsi_update(&rsii, rsip);
257 status = 0;
258 out:
259 rsi_free(&rsii);
260 if (rsip)
261 cache_put(&rsip->h, &rsi_cache);
262 else
263 status = -ENOMEM;
264 return status;
267 static struct cache_detail rsi_cache = {
268 .owner = THIS_MODULE,
269 .hash_size = RSI_HASHMAX,
270 .hash_table = rsi_table,
271 .name = "auth.rpcsec.init",
272 .cache_put = rsi_put,
273 .cache_request = rsi_request,
274 .cache_parse = rsi_parse,
275 .match = rsi_match,
276 .init = rsi_init,
277 .update = update_rsi,
278 .alloc = rsi_alloc,
281 static struct rsi *rsi_lookup(struct rsi *item)
283 struct cache_head *ch;
284 int hash = rsi_hash(item);
286 ch = sunrpc_cache_lookup(&rsi_cache, &item->h, hash);
287 if (ch)
288 return container_of(ch, struct rsi, h);
289 else
290 return NULL;
293 static struct rsi *rsi_update(struct rsi *new, struct rsi *old)
295 struct cache_head *ch;
296 int hash = rsi_hash(new);
298 ch = sunrpc_cache_update(&rsi_cache, &new->h,
299 &old->h, hash);
300 if (ch)
301 return container_of(ch, struct rsi, h);
302 else
303 return NULL;
308 * The rpcsec_context cache is used to store a context that is
309 * used in data exchange.
310 * The key is a context handle. The content is:
311 * uid, gidlist, mechanism, service-set, mech-specific-data
314 #define RSC_HASHBITS 10
315 #define RSC_HASHMAX (1<<RSC_HASHBITS)
316 #define RSC_HASHMASK (RSC_HASHMAX-1)
318 #define GSS_SEQ_WIN 128
320 struct gss_svc_seq_data {
321 /* highest seq number seen so far: */
322 int sd_max;
323 /* for i such that sd_max-GSS_SEQ_WIN < i <= sd_max, the i-th bit of
324 * sd_win is nonzero iff sequence number i has been seen already: */
325 unsigned long sd_win[GSS_SEQ_WIN/BITS_PER_LONG];
326 spinlock_t sd_lock;
329 struct rsc {
330 struct cache_head h;
331 struct xdr_netobj handle;
332 struct svc_cred cred;
333 struct gss_svc_seq_data seqdata;
334 struct gss_ctx *mechctx;
337 static struct cache_head *rsc_table[RSC_HASHMAX];
338 static struct cache_detail rsc_cache;
339 static struct rsc *rsc_update(struct rsc *new, struct rsc *old);
340 static struct rsc *rsc_lookup(struct rsc *item);
342 static void rsc_free(struct rsc *rsci)
344 kfree(rsci->handle.data);
345 if (rsci->mechctx)
346 gss_delete_sec_context(&rsci->mechctx);
347 if (rsci->cred.cr_group_info)
348 put_group_info(rsci->cred.cr_group_info);
351 static void rsc_put(struct kref *ref)
353 struct rsc *rsci = container_of(ref, struct rsc, h.ref);
355 rsc_free(rsci);
356 kfree(rsci);
359 static inline int
360 rsc_hash(struct rsc *rsci)
362 return hash_mem(rsci->handle.data, rsci->handle.len, RSC_HASHBITS);
365 static int
366 rsc_match(struct cache_head *a, struct cache_head *b)
368 struct rsc *new = container_of(a, struct rsc, h);
369 struct rsc *tmp = container_of(b, struct rsc, h);
371 return netobj_equal(&new->handle, &tmp->handle);
374 static void
375 rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
377 struct rsc *new = container_of(cnew, struct rsc, h);
378 struct rsc *tmp = container_of(ctmp, struct rsc, h);
380 new->handle.len = tmp->handle.len;
381 tmp->handle.len = 0;
382 new->handle.data = tmp->handle.data;
383 tmp->handle.data = NULL;
384 new->mechctx = NULL;
385 new->cred.cr_group_info = NULL;
388 static void
389 update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
391 struct rsc *new = container_of(cnew, struct rsc, h);
392 struct rsc *tmp = container_of(ctmp, struct rsc, h);
394 new->mechctx = tmp->mechctx;
395 tmp->mechctx = NULL;
396 memset(&new->seqdata, 0, sizeof(new->seqdata));
397 spin_lock_init(&new->seqdata.sd_lock);
398 new->cred = tmp->cred;
399 tmp->cred.cr_group_info = NULL;
402 static struct cache_head *
403 rsc_alloc(void)
405 struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
406 if (rsci)
407 return &rsci->h;
408 else
409 return NULL;
412 static int rsc_parse(struct cache_detail *cd,
413 char *mesg, int mlen)
415 /* contexthandle expiry [ uid gid N <n gids> mechname ...mechdata... ] */
416 char *buf = mesg;
417 int len, rv;
418 struct rsc rsci, *rscp = NULL;
419 time_t expiry;
420 int status = -EINVAL;
421 struct gss_api_mech *gm = NULL;
423 memset(&rsci, 0, sizeof(rsci));
424 /* context handle */
425 len = qword_get(&mesg, buf, mlen);
426 if (len < 0) goto out;
427 status = -ENOMEM;
428 if (dup_to_netobj(&rsci.handle, buf, len))
429 goto out;
431 rsci.h.flags = 0;
432 /* expiry */
433 expiry = get_expiry(&mesg);
434 status = -EINVAL;
435 if (expiry == 0)
436 goto out;
438 rscp = rsc_lookup(&rsci);
439 if (!rscp)
440 goto out;
442 /* uid, or NEGATIVE */
443 rv = get_int(&mesg, &rsci.cred.cr_uid);
444 if (rv == -EINVAL)
445 goto out;
446 if (rv == -ENOENT)
447 set_bit(CACHE_NEGATIVE, &rsci.h.flags);
448 else {
449 int N, i;
451 /* gid */
452 if (get_int(&mesg, &rsci.cred.cr_gid))
453 goto out;
455 /* number of additional gid's */
456 if (get_int(&mesg, &N))
457 goto out;
458 status = -ENOMEM;
459 rsci.cred.cr_group_info = groups_alloc(N);
460 if (rsci.cred.cr_group_info == NULL)
461 goto out;
463 /* gid's */
464 status = -EINVAL;
465 for (i=0; i<N; i++) {
466 gid_t gid;
467 if (get_int(&mesg, &gid))
468 goto out;
469 GROUP_AT(rsci.cred.cr_group_info, i) = gid;
472 /* mech name */
473 len = qword_get(&mesg, buf, mlen);
474 if (len < 0)
475 goto out;
476 gm = gss_mech_get_by_name(buf);
477 status = -EOPNOTSUPP;
478 if (!gm)
479 goto out;
481 status = -EINVAL;
482 /* mech-specific data: */
483 len = qword_get(&mesg, buf, mlen);
484 if (len < 0)
485 goto out;
486 status = gss_import_sec_context(buf, len, gm, &rsci.mechctx);
487 if (status)
488 goto out;
490 rsci.h.expiry_time = expiry;
491 rscp = rsc_update(&rsci, rscp);
492 status = 0;
493 out:
494 gss_mech_put(gm);
495 rsc_free(&rsci);
496 if (rscp)
497 cache_put(&rscp->h, &rsc_cache);
498 else
499 status = -ENOMEM;
500 return status;
503 static struct cache_detail rsc_cache = {
504 .owner = THIS_MODULE,
505 .hash_size = RSC_HASHMAX,
506 .hash_table = rsc_table,
507 .name = "auth.rpcsec.context",
508 .cache_put = rsc_put,
509 .cache_parse = rsc_parse,
510 .match = rsc_match,
511 .init = rsc_init,
512 .update = update_rsc,
513 .alloc = rsc_alloc,
516 static struct rsc *rsc_lookup(struct rsc *item)
518 struct cache_head *ch;
519 int hash = rsc_hash(item);
521 ch = sunrpc_cache_lookup(&rsc_cache, &item->h, hash);
522 if (ch)
523 return container_of(ch, struct rsc, h);
524 else
525 return NULL;
528 static struct rsc *rsc_update(struct rsc *new, struct rsc *old)
530 struct cache_head *ch;
531 int hash = rsc_hash(new);
533 ch = sunrpc_cache_update(&rsc_cache, &new->h,
534 &old->h, hash);
535 if (ch)
536 return container_of(ch, struct rsc, h);
537 else
538 return NULL;
542 static struct rsc *
543 gss_svc_searchbyctx(struct xdr_netobj *handle)
545 struct rsc rsci;
546 struct rsc *found;
548 memset(&rsci, 0, sizeof(rsci));
549 if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
550 return NULL;
551 found = rsc_lookup(&rsci);
552 rsc_free(&rsci);
553 if (!found)
554 return NULL;
555 if (cache_check(&rsc_cache, &found->h, NULL))
556 return NULL;
557 return found;
560 /* Implements sequence number algorithm as specified in RFC 2203. */
561 static int
562 gss_check_seq_num(struct rsc *rsci, int seq_num)
564 struct gss_svc_seq_data *sd = &rsci->seqdata;
566 spin_lock(&sd->sd_lock);
567 if (seq_num > sd->sd_max) {
568 if (seq_num >= sd->sd_max + GSS_SEQ_WIN) {
569 memset(sd->sd_win,0,sizeof(sd->sd_win));
570 sd->sd_max = seq_num;
571 } else while (sd->sd_max < seq_num) {
572 sd->sd_max++;
573 __clear_bit(sd->sd_max % GSS_SEQ_WIN, sd->sd_win);
575 __set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win);
576 goto ok;
577 } else if (seq_num <= sd->sd_max - GSS_SEQ_WIN) {
578 goto drop;
580 /* sd_max - GSS_SEQ_WIN < seq_num <= sd_max */
581 if (__test_and_set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win))
582 goto drop;
584 spin_unlock(&sd->sd_lock);
585 return 1;
586 drop:
587 spin_unlock(&sd->sd_lock);
588 return 0;
591 static inline u32 round_up_to_quad(u32 i)
593 return (i + 3 ) & ~3;
596 static inline int
597 svc_safe_getnetobj(struct kvec *argv, struct xdr_netobj *o)
599 int l;
601 if (argv->iov_len < 4)
602 return -1;
603 o->len = svc_getnl(argv);
604 l = round_up_to_quad(o->len);
605 if (argv->iov_len < l)
606 return -1;
607 o->data = argv->iov_base;
608 argv->iov_base += l;
609 argv->iov_len -= l;
610 return 0;
613 static inline int
614 svc_safe_putnetobj(struct kvec *resv, struct xdr_netobj *o)
616 u8 *p;
618 if (resv->iov_len + 4 > PAGE_SIZE)
619 return -1;
620 svc_putnl(resv, o->len);
621 p = resv->iov_base + resv->iov_len;
622 resv->iov_len += round_up_to_quad(o->len);
623 if (resv->iov_len > PAGE_SIZE)
624 return -1;
625 memcpy(p, o->data, o->len);
626 memset(p + o->len, 0, round_up_to_quad(o->len) - o->len);
627 return 0;
631 * Verify the checksum on the header and return SVC_OK on success.
632 * Otherwise, return SVC_DROP (in the case of a bad sequence number)
633 * or return SVC_DENIED and indicate error in authp.
635 static int
636 gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci,
637 __be32 *rpcstart, struct rpc_gss_wire_cred *gc, __be32 *authp)
639 struct gss_ctx *ctx_id = rsci->mechctx;
640 struct xdr_buf rpchdr;
641 struct xdr_netobj checksum;
642 u32 flavor = 0;
643 struct kvec *argv = &rqstp->rq_arg.head[0];
644 struct kvec iov;
646 /* data to compute the checksum over: */
647 iov.iov_base = rpcstart;
648 iov.iov_len = (u8 *)argv->iov_base - (u8 *)rpcstart;
649 xdr_buf_from_iov(&iov, &rpchdr);
651 *authp = rpc_autherr_badverf;
652 if (argv->iov_len < 4)
653 return SVC_DENIED;
654 flavor = svc_getnl(argv);
655 if (flavor != RPC_AUTH_GSS)
656 return SVC_DENIED;
657 if (svc_safe_getnetobj(argv, &checksum))
658 return SVC_DENIED;
660 if (rqstp->rq_deferred) /* skip verification of revisited request */
661 return SVC_OK;
662 if (gss_verify_mic(ctx_id, &rpchdr, &checksum) != GSS_S_COMPLETE) {
663 *authp = rpcsec_gsserr_credproblem;
664 return SVC_DENIED;
667 if (gc->gc_seq > MAXSEQ) {
668 dprintk("RPC: svcauth_gss: discarding request with "
669 "large sequence number %d\n", gc->gc_seq);
670 *authp = rpcsec_gsserr_ctxproblem;
671 return SVC_DENIED;
673 if (!gss_check_seq_num(rsci, gc->gc_seq)) {
674 dprintk("RPC: svcauth_gss: discarding request with "
675 "old sequence number %d\n", gc->gc_seq);
676 return SVC_DROP;
678 return SVC_OK;
681 static int
682 gss_write_null_verf(struct svc_rqst *rqstp)
684 __be32 *p;
686 svc_putnl(rqstp->rq_res.head, RPC_AUTH_NULL);
687 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
688 /* don't really need to check if head->iov_len > PAGE_SIZE ... */
689 *p++ = 0;
690 if (!xdr_ressize_check(rqstp, p))
691 return -1;
692 return 0;
695 static int
696 gss_write_verf(struct svc_rqst *rqstp, struct gss_ctx *ctx_id, u32 seq)
698 __be32 xdr_seq;
699 u32 maj_stat;
700 struct xdr_buf verf_data;
701 struct xdr_netobj mic;
702 __be32 *p;
703 struct kvec iov;
705 svc_putnl(rqstp->rq_res.head, RPC_AUTH_GSS);
706 xdr_seq = htonl(seq);
708 iov.iov_base = &xdr_seq;
709 iov.iov_len = sizeof(xdr_seq);
710 xdr_buf_from_iov(&iov, &verf_data);
711 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
712 mic.data = (u8 *)(p + 1);
713 maj_stat = gss_get_mic(ctx_id, &verf_data, &mic);
714 if (maj_stat != GSS_S_COMPLETE)
715 return -1;
716 *p++ = htonl(mic.len);
717 memset((u8 *)p + mic.len, 0, round_up_to_quad(mic.len) - mic.len);
718 p += XDR_QUADLEN(mic.len);
719 if (!xdr_ressize_check(rqstp, p))
720 return -1;
721 return 0;
724 struct gss_domain {
725 struct auth_domain h;
726 u32 pseudoflavor;
729 static struct auth_domain *
730 find_gss_auth_domain(struct gss_ctx *ctx, u32 svc)
732 char *name;
734 name = gss_service_to_auth_domain_name(ctx->mech_type, svc);
735 if (!name)
736 return NULL;
737 return auth_domain_find(name);
740 static struct auth_ops svcauthops_gss;
742 u32 svcauth_gss_flavor(struct auth_domain *dom)
744 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
746 return gd->pseudoflavor;
749 EXPORT_SYMBOL(svcauth_gss_flavor);
752 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
754 struct gss_domain *new;
755 struct auth_domain *test;
756 int stat = -ENOMEM;
758 new = kmalloc(sizeof(*new), GFP_KERNEL);
759 if (!new)
760 goto out;
761 kref_init(&new->h.ref);
762 new->h.name = kstrdup(name, GFP_KERNEL);
763 if (!new->h.name)
764 goto out_free_dom;
765 new->h.flavour = &svcauthops_gss;
766 new->pseudoflavor = pseudoflavor;
768 stat = 0;
769 test = auth_domain_lookup(name, &new->h);
770 if (test != &new->h) { /* Duplicate registration */
771 auth_domain_put(test);
772 kfree(new->h.name);
773 goto out_free_dom;
775 return 0;
777 out_free_dom:
778 kfree(new);
779 out:
780 return stat;
783 EXPORT_SYMBOL(svcauth_gss_register_pseudoflavor);
785 static inline int
786 read_u32_from_xdr_buf(struct xdr_buf *buf, int base, u32 *obj)
788 __be32 raw;
789 int status;
791 status = read_bytes_from_xdr_buf(buf, base, &raw, sizeof(*obj));
792 if (status)
793 return status;
794 *obj = ntohl(raw);
795 return 0;
798 /* It would be nice if this bit of code could be shared with the client.
799 * Obstacles:
800 * The client shouldn't malloc(), would have to pass in own memory.
801 * The server uses base of head iovec as read pointer, while the
802 * client uses separate pointer. */
803 static int
804 unwrap_integ_data(struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
806 int stat = -EINVAL;
807 u32 integ_len, maj_stat;
808 struct xdr_netobj mic;
809 struct xdr_buf integ_buf;
811 integ_len = svc_getnl(&buf->head[0]);
812 if (integ_len & 3)
813 return stat;
814 if (integ_len > buf->len)
815 return stat;
816 if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len))
817 BUG();
818 /* copy out mic... */
819 if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
820 BUG();
821 if (mic.len > RPC_MAX_AUTH_SIZE)
822 return stat;
823 mic.data = kmalloc(mic.len, GFP_KERNEL);
824 if (!mic.data)
825 return stat;
826 if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
827 goto out;
828 maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
829 if (maj_stat != GSS_S_COMPLETE)
830 goto out;
831 if (svc_getnl(&buf->head[0]) != seq)
832 goto out;
833 stat = 0;
834 out:
835 kfree(mic.data);
836 return stat;
839 static inline int
840 total_buf_len(struct xdr_buf *buf)
842 return buf->head[0].iov_len + buf->page_len + buf->tail[0].iov_len;
845 static void
846 fix_priv_head(struct xdr_buf *buf, int pad)
848 if (buf->page_len == 0) {
849 /* We need to adjust head and buf->len in tandem in this
850 * case to make svc_defer() work--it finds the original
851 * buffer start using buf->len - buf->head[0].iov_len. */
852 buf->head[0].iov_len -= pad;
856 static int
857 unwrap_priv_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
859 u32 priv_len, maj_stat;
860 int pad, saved_len, remaining_len, offset;
862 rqstp->rq_splice_ok = 0;
864 priv_len = svc_getnl(&buf->head[0]);
865 if (rqstp->rq_deferred) {
866 /* Already decrypted last time through! The sequence number
867 * check at out_seq is unnecessary but harmless: */
868 goto out_seq;
870 /* buf->len is the number of bytes from the original start of the
871 * request to the end, where head[0].iov_len is just the bytes
872 * not yet read from the head, so these two values are different: */
873 remaining_len = total_buf_len(buf);
874 if (priv_len > remaining_len)
875 return -EINVAL;
876 pad = remaining_len - priv_len;
877 buf->len -= pad;
878 fix_priv_head(buf, pad);
880 /* Maybe it would be better to give gss_unwrap a length parameter: */
881 saved_len = buf->len;
882 buf->len = priv_len;
883 maj_stat = gss_unwrap(ctx, 0, buf);
884 pad = priv_len - buf->len;
885 buf->len = saved_len;
886 buf->len -= pad;
887 /* The upper layers assume the buffer is aligned on 4-byte boundaries.
888 * In the krb5p case, at least, the data ends up offset, so we need to
889 * move it around. */
890 /* XXX: This is very inefficient. It would be better to either do
891 * this while we encrypt, or maybe in the receive code, if we can peak
892 * ahead and work out the service and mechanism there. */
893 offset = buf->head[0].iov_len % 4;
894 if (offset) {
895 buf->buflen = RPCSVC_MAXPAYLOAD;
896 xdr_shift_buf(buf, offset);
897 fix_priv_head(buf, pad);
899 if (maj_stat != GSS_S_COMPLETE)
900 return -EINVAL;
901 out_seq:
902 if (svc_getnl(&buf->head[0]) != seq)
903 return -EINVAL;
904 return 0;
907 struct gss_svc_data {
908 /* decoded gss client cred: */
909 struct rpc_gss_wire_cred clcred;
910 /* save a pointer to the beginning of the encoded verifier,
911 * for use in encryption/checksumming in svcauth_gss_release: */
912 __be32 *verf_start;
913 struct rsc *rsci;
916 static int
917 svcauth_gss_set_client(struct svc_rqst *rqstp)
919 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
920 struct rsc *rsci = svcdata->rsci;
921 struct rpc_gss_wire_cred *gc = &svcdata->clcred;
922 int stat;
925 * A gss export can be specified either by:
926 * export *(sec=krb5,rw)
927 * or by
928 * export gss/krb5(rw)
929 * The latter is deprecated; but for backwards compatibility reasons
930 * the nfsd code will still fall back on trying it if the former
931 * doesn't work; so we try to make both available to nfsd, below.
933 rqstp->rq_gssclient = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
934 if (rqstp->rq_gssclient == NULL)
935 return SVC_DENIED;
936 stat = svcauth_unix_set_client(rqstp);
937 if (stat == SVC_DROP)
938 return stat;
939 return SVC_OK;
942 static inline int
943 gss_write_init_verf(struct svc_rqst *rqstp, struct rsi *rsip)
945 struct rsc *rsci;
946 int rc;
948 if (rsip->major_status != GSS_S_COMPLETE)
949 return gss_write_null_verf(rqstp);
950 rsci = gss_svc_searchbyctx(&rsip->out_handle);
951 if (rsci == NULL) {
952 rsip->major_status = GSS_S_NO_CONTEXT;
953 return gss_write_null_verf(rqstp);
955 rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN);
956 cache_put(&rsci->h, &rsc_cache);
957 return rc;
961 * Having read the cred already and found we're in the context
962 * initiation case, read the verifier and initiate (or check the results
963 * of) upcalls to userspace for help with context initiation. If
964 * the upcall results are available, write the verifier and result.
965 * Otherwise, drop the request pending an answer to the upcall.
967 static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
968 struct rpc_gss_wire_cred *gc, __be32 *authp)
970 struct kvec *argv = &rqstp->rq_arg.head[0];
971 struct kvec *resv = &rqstp->rq_res.head[0];
972 struct xdr_netobj tmpobj;
973 struct rsi *rsip, rsikey;
974 int ret;
976 /* Read the verifier; should be NULL: */
977 *authp = rpc_autherr_badverf;
978 if (argv->iov_len < 2 * 4)
979 return SVC_DENIED;
980 if (svc_getnl(argv) != RPC_AUTH_NULL)
981 return SVC_DENIED;
982 if (svc_getnl(argv) != 0)
983 return SVC_DENIED;
985 /* Martial context handle and token for upcall: */
986 *authp = rpc_autherr_badcred;
987 if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
988 return SVC_DENIED;
989 memset(&rsikey, 0, sizeof(rsikey));
990 if (dup_netobj(&rsikey.in_handle, &gc->gc_ctx))
991 return SVC_DROP;
992 *authp = rpc_autherr_badverf;
993 if (svc_safe_getnetobj(argv, &tmpobj)) {
994 kfree(rsikey.in_handle.data);
995 return SVC_DENIED;
997 if (dup_netobj(&rsikey.in_token, &tmpobj)) {
998 kfree(rsikey.in_handle.data);
999 return SVC_DROP;
1002 /* Perform upcall, or find upcall result: */
1003 rsip = rsi_lookup(&rsikey);
1004 rsi_free(&rsikey);
1005 if (!rsip)
1006 return SVC_DROP;
1007 switch (cache_check(&rsi_cache, &rsip->h, &rqstp->rq_chandle)) {
1008 case -EAGAIN:
1009 case -ETIMEDOUT:
1010 case -ENOENT:
1011 /* No upcall result: */
1012 return SVC_DROP;
1013 case 0:
1014 ret = SVC_DROP;
1015 /* Got an answer to the upcall; use it: */
1016 if (gss_write_init_verf(rqstp, rsip))
1017 goto out;
1018 if (resv->iov_len + 4 > PAGE_SIZE)
1019 goto out;
1020 svc_putnl(resv, RPC_SUCCESS);
1021 if (svc_safe_putnetobj(resv, &rsip->out_handle))
1022 goto out;
1023 if (resv->iov_len + 3 * 4 > PAGE_SIZE)
1024 goto out;
1025 svc_putnl(resv, rsip->major_status);
1026 svc_putnl(resv, rsip->minor_status);
1027 svc_putnl(resv, GSS_SEQ_WIN);
1028 if (svc_safe_putnetobj(resv, &rsip->out_token))
1029 goto out;
1031 ret = SVC_COMPLETE;
1032 out:
1033 cache_put(&rsip->h, &rsi_cache);
1034 return ret;
1038 * Accept an rpcsec packet.
1039 * If context establishment, punt to user space
1040 * If data exchange, verify/decrypt
1041 * If context destruction, handle here
1042 * In the context establishment and destruction case we encode
1043 * response here and return SVC_COMPLETE.
1045 static int
1046 svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
1048 struct kvec *argv = &rqstp->rq_arg.head[0];
1049 struct kvec *resv = &rqstp->rq_res.head[0];
1050 u32 crlen;
1051 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
1052 struct rpc_gss_wire_cred *gc;
1053 struct rsc *rsci = NULL;
1054 __be32 *rpcstart;
1055 __be32 *reject_stat = resv->iov_base + resv->iov_len;
1056 int ret;
1058 dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
1059 argv->iov_len);
1061 *authp = rpc_autherr_badcred;
1062 if (!svcdata)
1063 svcdata = kmalloc(sizeof(*svcdata), GFP_KERNEL);
1064 if (!svcdata)
1065 goto auth_err;
1066 rqstp->rq_auth_data = svcdata;
1067 svcdata->verf_start = NULL;
1068 svcdata->rsci = NULL;
1069 gc = &svcdata->clcred;
1071 /* start of rpc packet is 7 u32's back from here:
1072 * xid direction rpcversion prog vers proc flavour
1074 rpcstart = argv->iov_base;
1075 rpcstart -= 7;
1077 /* credential is:
1078 * version(==1), proc(0,1,2,3), seq, service (1,2,3), handle
1079 * at least 5 u32s, and is preceeded by length, so that makes 6.
1082 if (argv->iov_len < 5 * 4)
1083 goto auth_err;
1084 crlen = svc_getnl(argv);
1085 if (svc_getnl(argv) != RPC_GSS_VERSION)
1086 goto auth_err;
1087 gc->gc_proc = svc_getnl(argv);
1088 gc->gc_seq = svc_getnl(argv);
1089 gc->gc_svc = svc_getnl(argv);
1090 if (svc_safe_getnetobj(argv, &gc->gc_ctx))
1091 goto auth_err;
1092 if (crlen != round_up_to_quad(gc->gc_ctx.len) + 5 * 4)
1093 goto auth_err;
1095 if ((gc->gc_proc != RPC_GSS_PROC_DATA) && (rqstp->rq_proc != 0))
1096 goto auth_err;
1098 *authp = rpc_autherr_badverf;
1099 switch (gc->gc_proc) {
1100 case RPC_GSS_PROC_INIT:
1101 case RPC_GSS_PROC_CONTINUE_INIT:
1102 return svcauth_gss_handle_init(rqstp, gc, authp);
1103 case RPC_GSS_PROC_DATA:
1104 case RPC_GSS_PROC_DESTROY:
1105 /* Look up the context, and check the verifier: */
1106 *authp = rpcsec_gsserr_credproblem;
1107 rsci = gss_svc_searchbyctx(&gc->gc_ctx);
1108 if (!rsci)
1109 goto auth_err;
1110 switch (gss_verify_header(rqstp, rsci, rpcstart, gc, authp)) {
1111 case SVC_OK:
1112 break;
1113 case SVC_DENIED:
1114 goto auth_err;
1115 case SVC_DROP:
1116 goto drop;
1118 break;
1119 default:
1120 *authp = rpc_autherr_rejectedcred;
1121 goto auth_err;
1124 /* now act upon the command: */
1125 switch (gc->gc_proc) {
1126 case RPC_GSS_PROC_DESTROY:
1127 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1128 goto auth_err;
1129 rsci->h.expiry_time = get_seconds();
1130 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
1131 if (resv->iov_len + 4 > PAGE_SIZE)
1132 goto drop;
1133 svc_putnl(resv, RPC_SUCCESS);
1134 goto complete;
1135 case RPC_GSS_PROC_DATA:
1136 *authp = rpcsec_gsserr_ctxproblem;
1137 svcdata->verf_start = resv->iov_base + resv->iov_len;
1138 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1139 goto auth_err;
1140 rqstp->rq_cred = rsci->cred;
1141 get_group_info(rsci->cred.cr_group_info);
1142 *authp = rpc_autherr_badcred;
1143 switch (gc->gc_svc) {
1144 case RPC_GSS_SVC_NONE:
1145 break;
1146 case RPC_GSS_SVC_INTEGRITY:
1147 /* placeholders for length and seq. number: */
1148 svc_putnl(resv, 0);
1149 svc_putnl(resv, 0);
1150 if (unwrap_integ_data(&rqstp->rq_arg,
1151 gc->gc_seq, rsci->mechctx))
1152 goto garbage_args;
1153 break;
1154 case RPC_GSS_SVC_PRIVACY:
1155 /* placeholders for length and seq. number: */
1156 svc_putnl(resv, 0);
1157 svc_putnl(resv, 0);
1158 if (unwrap_priv_data(rqstp, &rqstp->rq_arg,
1159 gc->gc_seq, rsci->mechctx))
1160 goto garbage_args;
1161 break;
1162 default:
1163 goto auth_err;
1165 svcdata->rsci = rsci;
1166 cache_get(&rsci->h);
1167 rqstp->rq_flavor = gss_svc_to_pseudoflavor(
1168 rsci->mechctx->mech_type, gc->gc_svc);
1169 ret = SVC_OK;
1170 goto out;
1172 garbage_args:
1173 ret = SVC_GARBAGE;
1174 goto out;
1175 auth_err:
1176 /* Restore write pointer to its original value: */
1177 xdr_ressize_check(rqstp, reject_stat);
1178 ret = SVC_DENIED;
1179 goto out;
1180 complete:
1181 ret = SVC_COMPLETE;
1182 goto out;
1183 drop:
1184 ret = SVC_DROP;
1185 out:
1186 if (rsci)
1187 cache_put(&rsci->h, &rsc_cache);
1188 return ret;
1191 static __be32 *
1192 svcauth_gss_prepare_to_wrap(struct xdr_buf *resbuf, struct gss_svc_data *gsd)
1194 __be32 *p;
1195 u32 verf_len;
1197 p = gsd->verf_start;
1198 gsd->verf_start = NULL;
1200 /* If the reply stat is nonzero, don't wrap: */
1201 if (*(p-1) != rpc_success)
1202 return NULL;
1203 /* Skip the verifier: */
1204 p += 1;
1205 verf_len = ntohl(*p++);
1206 p += XDR_QUADLEN(verf_len);
1207 /* move accept_stat to right place: */
1208 memcpy(p, p + 2, 4);
1209 /* Also don't wrap if the accept stat is nonzero: */
1210 if (*p != rpc_success) {
1211 resbuf->head[0].iov_len -= 2 * 4;
1212 return NULL;
1214 p++;
1215 return p;
1218 static inline int
1219 svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
1221 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1222 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1223 struct xdr_buf *resbuf = &rqstp->rq_res;
1224 struct xdr_buf integ_buf;
1225 struct xdr_netobj mic;
1226 struct kvec *resv;
1227 __be32 *p;
1228 int integ_offset, integ_len;
1229 int stat = -EINVAL;
1231 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1232 if (p == NULL)
1233 goto out;
1234 integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
1235 integ_len = resbuf->len - integ_offset;
1236 BUG_ON(integ_len % 4);
1237 *p++ = htonl(integ_len);
1238 *p++ = htonl(gc->gc_seq);
1239 if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset,
1240 integ_len))
1241 BUG();
1242 if (resbuf->tail[0].iov_base == NULL) {
1243 if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1244 goto out_err;
1245 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1246 + resbuf->head[0].iov_len;
1247 resbuf->tail[0].iov_len = 0;
1248 resv = &resbuf->tail[0];
1249 } else {
1250 resv = &resbuf->tail[0];
1252 mic.data = (u8 *)resv->iov_base + resv->iov_len + 4;
1253 if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic))
1254 goto out_err;
1255 svc_putnl(resv, mic.len);
1256 memset(mic.data + mic.len, 0,
1257 round_up_to_quad(mic.len) - mic.len);
1258 resv->iov_len += XDR_QUADLEN(mic.len) << 2;
1259 /* not strictly required: */
1260 resbuf->len += XDR_QUADLEN(mic.len) << 2;
1261 BUG_ON(resv->iov_len > PAGE_SIZE);
1262 out:
1263 stat = 0;
1264 out_err:
1265 return stat;
1268 static inline int
1269 svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
1271 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1272 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1273 struct xdr_buf *resbuf = &rqstp->rq_res;
1274 struct page **inpages = NULL;
1275 __be32 *p, *len;
1276 int offset;
1277 int pad;
1279 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1280 if (p == NULL)
1281 return 0;
1282 len = p++;
1283 offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
1284 *p++ = htonl(gc->gc_seq);
1285 inpages = resbuf->pages;
1286 /* XXX: Would be better to write some xdr helper functions for
1287 * nfs{2,3,4}xdr.c that place the data right, instead of copying: */
1288 if (resbuf->tail[0].iov_base) {
1289 BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
1290 + PAGE_SIZE);
1291 BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
1292 if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
1293 + 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1294 return -ENOMEM;
1295 memmove(resbuf->tail[0].iov_base + RPC_MAX_AUTH_SIZE,
1296 resbuf->tail[0].iov_base,
1297 resbuf->tail[0].iov_len);
1298 resbuf->tail[0].iov_base += RPC_MAX_AUTH_SIZE;
1300 if (resbuf->tail[0].iov_base == NULL) {
1301 if (resbuf->head[0].iov_len + 2*RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1302 return -ENOMEM;
1303 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1304 + resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE;
1305 resbuf->tail[0].iov_len = 0;
1307 if (gss_wrap(gsd->rsci->mechctx, offset, resbuf, inpages))
1308 return -ENOMEM;
1309 *len = htonl(resbuf->len - offset);
1310 pad = 3 - ((resbuf->len - offset - 1)&3);
1311 p = (__be32 *)(resbuf->tail[0].iov_base + resbuf->tail[0].iov_len);
1312 memset(p, 0, pad);
1313 resbuf->tail[0].iov_len += pad;
1314 resbuf->len += pad;
1315 return 0;
1318 static int
1319 svcauth_gss_release(struct svc_rqst *rqstp)
1321 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1322 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1323 struct xdr_buf *resbuf = &rqstp->rq_res;
1324 int stat = -EINVAL;
1326 if (gc->gc_proc != RPC_GSS_PROC_DATA)
1327 goto out;
1328 /* Release can be called twice, but we only wrap once. */
1329 if (gsd->verf_start == NULL)
1330 goto out;
1331 /* normally not set till svc_send, but we need it here: */
1332 /* XXX: what for? Do we mess it up the moment we call svc_putu32
1333 * or whatever? */
1334 resbuf->len = total_buf_len(resbuf);
1335 switch (gc->gc_svc) {
1336 case RPC_GSS_SVC_NONE:
1337 break;
1338 case RPC_GSS_SVC_INTEGRITY:
1339 stat = svcauth_gss_wrap_resp_integ(rqstp);
1340 if (stat)
1341 goto out_err;
1342 break;
1343 case RPC_GSS_SVC_PRIVACY:
1344 stat = svcauth_gss_wrap_resp_priv(rqstp);
1345 if (stat)
1346 goto out_err;
1347 break;
1348 default:
1349 goto out_err;
1352 out:
1353 stat = 0;
1354 out_err:
1355 if (rqstp->rq_client)
1356 auth_domain_put(rqstp->rq_client);
1357 rqstp->rq_client = NULL;
1358 if (rqstp->rq_gssclient)
1359 auth_domain_put(rqstp->rq_gssclient);
1360 rqstp->rq_gssclient = NULL;
1361 if (rqstp->rq_cred.cr_group_info)
1362 put_group_info(rqstp->rq_cred.cr_group_info);
1363 rqstp->rq_cred.cr_group_info = NULL;
1364 if (gsd->rsci)
1365 cache_put(&gsd->rsci->h, &rsc_cache);
1366 gsd->rsci = NULL;
1368 return stat;
1371 static void
1372 svcauth_gss_domain_release(struct auth_domain *dom)
1374 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
1376 kfree(dom->name);
1377 kfree(gd);
1380 static struct auth_ops svcauthops_gss = {
1381 .name = "rpcsec_gss",
1382 .owner = THIS_MODULE,
1383 .flavour = RPC_AUTH_GSS,
1384 .accept = svcauth_gss_accept,
1385 .release = svcauth_gss_release,
1386 .domain_release = svcauth_gss_domain_release,
1387 .set_client = svcauth_gss_set_client,
1391 gss_svc_init(void)
1393 int rv = svc_auth_register(RPC_AUTH_GSS, &svcauthops_gss);
1394 if (rv)
1395 return rv;
1396 rv = cache_register(&rsc_cache);
1397 if (rv)
1398 goto out1;
1399 rv = cache_register(&rsi_cache);
1400 if (rv)
1401 goto out2;
1402 return 0;
1403 out2:
1404 cache_unregister(&rsc_cache);
1405 out1:
1406 svc_auth_unregister(RPC_AUTH_GSS);
1407 return rv;
1410 void
1411 gss_svc_shutdown(void)
1413 cache_unregister(&rsc_cache);
1414 cache_unregister(&rsi_cache);
1415 svc_auth_unregister(RPC_AUTH_GSS);