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
11 * The RPCSEC_GSS involves three stages:
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
36 * mechanism specific information, such as a key
40 #include <linux/slab.h>
41 #include <linux/types.h>
42 #include <linux/module.h>
43 #include <linux/pagemap.h>
44 #include <linux/user_namespace.h>
46 #include <linux/sunrpc/auth_gss.h>
47 #include <linux/sunrpc/gss_err.h>
48 #include <linux/sunrpc/svcauth.h>
49 #include <linux/sunrpc/svcauth_gss.h>
50 #include <linux/sunrpc/cache.h>
51 #include "gss_rpc_upcall.h"
54 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
55 # define RPCDBG_FACILITY RPCDBG_AUTH
58 /* The rpcsec_init cache is used for mapping RPCSEC_GSS_{,CONT_}INIT requests
61 * Key is context handle (\x if empty) and gss_token.
62 * Content is major_status minor_status (integers) context_handle, reply_token.
66 static int netobj_equal(struct xdr_netobj *a, struct xdr_netobj *b)
68 return a->len == b->len && 0 == memcmp(a->data, b->data, a->len);
71 #define RSI_HASHBITS 6
72 #define RSI_HASHMAX (1<<RSI_HASHBITS)
76 struct xdr_netobj in_handle, in_token;
77 struct xdr_netobj out_handle, out_token;
78 int major_status, minor_status;
81 static struct rsi *rsi_update(struct cache_detail *cd, struct rsi *new, struct rsi *old);
82 static struct rsi *rsi_lookup(struct cache_detail *cd, struct rsi *item);
84 static void rsi_free(struct rsi *rsii)
86 kfree(rsii->in_handle.data);
87 kfree(rsii->in_token.data);
88 kfree(rsii->out_handle.data);
89 kfree(rsii->out_token.data);
92 static void rsi_put(struct kref *ref)
94 struct rsi *rsii = container_of(ref, struct rsi, h.ref);
99 static inline int rsi_hash(struct rsi *item)
101 return hash_mem(item->in_handle.data, item->in_handle.len, RSI_HASHBITS)
102 ^ hash_mem(item->in_token.data, item->in_token.len, RSI_HASHBITS);
105 static int rsi_match(struct cache_head *a, struct cache_head *b)
107 struct rsi *item = container_of(a, struct rsi, h);
108 struct rsi *tmp = container_of(b, struct rsi, h);
109 return netobj_equal(&item->in_handle, &tmp->in_handle) &&
110 netobj_equal(&item->in_token, &tmp->in_token);
113 static int dup_to_netobj(struct xdr_netobj *dst, char *src, int len)
116 dst->data = (len ? kmemdup(src, len, GFP_KERNEL) : NULL);
117 if (len && !dst->data)
122 static inline int dup_netobj(struct xdr_netobj *dst, struct xdr_netobj *src)
124 return dup_to_netobj(dst, src->data, src->len);
127 static void rsi_init(struct cache_head *cnew, struct cache_head *citem)
129 struct rsi *new = container_of(cnew, struct rsi, h);
130 struct rsi *item = container_of(citem, struct rsi, h);
132 new->out_handle.data = NULL;
133 new->out_handle.len = 0;
134 new->out_token.data = NULL;
135 new->out_token.len = 0;
136 new->in_handle.len = item->in_handle.len;
137 item->in_handle.len = 0;
138 new->in_token.len = item->in_token.len;
139 item->in_token.len = 0;
140 new->in_handle.data = item->in_handle.data;
141 item->in_handle.data = NULL;
142 new->in_token.data = item->in_token.data;
143 item->in_token.data = NULL;
146 static void update_rsi(struct cache_head *cnew, struct cache_head *citem)
148 struct rsi *new = container_of(cnew, struct rsi, h);
149 struct rsi *item = container_of(citem, struct rsi, h);
151 BUG_ON(new->out_handle.data || new->out_token.data);
152 new->out_handle.len = item->out_handle.len;
153 item->out_handle.len = 0;
154 new->out_token.len = item->out_token.len;
155 item->out_token.len = 0;
156 new->out_handle.data = item->out_handle.data;
157 item->out_handle.data = NULL;
158 new->out_token.data = item->out_token.data;
159 item->out_token.data = NULL;
161 new->major_status = item->major_status;
162 new->minor_status = item->minor_status;
165 static struct cache_head *rsi_alloc(void)
167 struct rsi *rsii = kmalloc(sizeof(*rsii), GFP_KERNEL);
174 static void rsi_request(struct cache_detail *cd,
175 struct cache_head *h,
176 char **bpp, int *blen)
178 struct rsi *rsii = container_of(h, struct rsi, h);
180 qword_addhex(bpp, blen, rsii->in_handle.data, rsii->in_handle.len);
181 qword_addhex(bpp, blen, rsii->in_token.data, rsii->in_token.len);
185 static int rsi_parse(struct cache_detail *cd,
186 char *mesg, int mlen)
188 /* context token expiry major minor context token */
192 struct rsi rsii, *rsip = NULL;
194 int status = -EINVAL;
196 memset(&rsii, 0, sizeof(rsii));
198 len = qword_get(&mesg, buf, mlen);
202 if (dup_to_netobj(&rsii.in_handle, buf, len))
206 len = qword_get(&mesg, buf, mlen);
211 if (dup_to_netobj(&rsii.in_token, buf, len))
214 rsip = rsi_lookup(cd, &rsii);
220 expiry = get_expiry(&mesg);
226 len = qword_get(&mesg, buf, mlen);
229 rsii.major_status = simple_strtoul(buf, &ep, 10);
232 len = qword_get(&mesg, buf, mlen);
235 rsii.minor_status = simple_strtoul(buf, &ep, 10);
240 len = qword_get(&mesg, buf, mlen);
244 if (dup_to_netobj(&rsii.out_handle, buf, len))
248 len = qword_get(&mesg, buf, mlen);
253 if (dup_to_netobj(&rsii.out_token, buf, len))
255 rsii.h.expiry_time = expiry;
256 rsip = rsi_update(cd, &rsii, rsip);
261 cache_put(&rsip->h, cd);
267 static struct cache_detail rsi_cache_template = {
268 .owner = THIS_MODULE,
269 .hash_size = RSI_HASHMAX,
270 .name = "auth.rpcsec.init",
271 .cache_put = rsi_put,
272 .cache_request = rsi_request,
273 .cache_parse = rsi_parse,
276 .update = update_rsi,
280 static struct rsi *rsi_lookup(struct cache_detail *cd, struct rsi *item)
282 struct cache_head *ch;
283 int hash = rsi_hash(item);
285 ch = sunrpc_cache_lookup(cd, &item->h, hash);
287 return container_of(ch, struct rsi, h);
292 static struct rsi *rsi_update(struct cache_detail *cd, struct rsi *new, struct rsi *old)
294 struct cache_head *ch;
295 int hash = rsi_hash(new);
297 ch = sunrpc_cache_update(cd, &new->h,
300 return container_of(ch, struct rsi, h);
307 * The rpcsec_context cache is used to store a context that is
308 * used in data exchange.
309 * The key is a context handle. The content is:
310 * uid, gidlist, mechanism, service-set, mech-specific-data
313 #define RSC_HASHBITS 10
314 #define RSC_HASHMAX (1<<RSC_HASHBITS)
316 #define GSS_SEQ_WIN 128
318 struct gss_svc_seq_data {
319 /* highest seq number seen so far: */
321 /* for i such that sd_max-GSS_SEQ_WIN < i <= sd_max, the i-th bit of
322 * sd_win is nonzero iff sequence number i has been seen already: */
323 unsigned long sd_win[GSS_SEQ_WIN/BITS_PER_LONG];
329 struct xdr_netobj handle;
330 struct svc_cred cred;
331 struct gss_svc_seq_data seqdata;
332 struct gss_ctx *mechctx;
335 static struct rsc *rsc_update(struct cache_detail *cd, struct rsc *new, struct rsc *old);
336 static struct rsc *rsc_lookup(struct cache_detail *cd, struct rsc *item);
338 static void rsc_free(struct rsc *rsci)
340 kfree(rsci->handle.data);
342 gss_delete_sec_context(&rsci->mechctx);
343 free_svc_cred(&rsci->cred);
346 static void rsc_put(struct kref *ref)
348 struct rsc *rsci = container_of(ref, struct rsc, h.ref);
355 rsc_hash(struct rsc *rsci)
357 return hash_mem(rsci->handle.data, rsci->handle.len, RSC_HASHBITS);
361 rsc_match(struct cache_head *a, struct cache_head *b)
363 struct rsc *new = container_of(a, struct rsc, h);
364 struct rsc *tmp = container_of(b, struct rsc, h);
366 return netobj_equal(&new->handle, &tmp->handle);
370 rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
372 struct rsc *new = container_of(cnew, struct rsc, h);
373 struct rsc *tmp = container_of(ctmp, struct rsc, h);
375 new->handle.len = tmp->handle.len;
377 new->handle.data = tmp->handle.data;
378 tmp->handle.data = NULL;
380 init_svc_cred(&new->cred);
384 update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
386 struct rsc *new = container_of(cnew, struct rsc, h);
387 struct rsc *tmp = container_of(ctmp, struct rsc, h);
389 new->mechctx = tmp->mechctx;
391 memset(&new->seqdata, 0, sizeof(new->seqdata));
392 spin_lock_init(&new->seqdata.sd_lock);
393 new->cred = tmp->cred;
394 init_svc_cred(&tmp->cred);
397 static struct cache_head *
400 struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
407 static int rsc_parse(struct cache_detail *cd,
408 char *mesg, int mlen)
410 /* contexthandle expiry [ uid gid N <n gids> mechname ...mechdata... ] */
414 struct rsc rsci, *rscp = NULL;
416 int status = -EINVAL;
417 struct gss_api_mech *gm = NULL;
419 memset(&rsci, 0, sizeof(rsci));
421 len = qword_get(&mesg, buf, mlen);
422 if (len < 0) goto out;
424 if (dup_to_netobj(&rsci.handle, buf, len))
429 expiry = get_expiry(&mesg);
434 rscp = rsc_lookup(cd, &rsci);
438 /* uid, or NEGATIVE */
439 rv = get_int(&mesg, &id);
443 set_bit(CACHE_NEGATIVE, &rsci.h.flags);
448 * NOTE: we skip uid_valid()/gid_valid() checks here:
449 * instead, * -1 id's are later mapped to the
450 * (export-specific) anonymous id by nfsd_setuser.
452 * (But supplementary gid's get no such special
453 * treatment so are checked for validity here.)
456 rsci.cred.cr_uid = make_kuid(&init_user_ns, id);
459 if (get_int(&mesg, &id))
461 rsci.cred.cr_gid = make_kgid(&init_user_ns, id);
463 /* number of additional gid's */
464 if (get_int(&mesg, &N))
466 if (N < 0 || N > NGROUPS_MAX)
469 rsci.cred.cr_group_info = groups_alloc(N);
470 if (rsci.cred.cr_group_info == NULL)
475 for (i=0; i<N; i++) {
477 if (get_int(&mesg, &id))
479 kgid = make_kgid(&init_user_ns, id);
480 if (!gid_valid(kgid))
482 rsci.cred.cr_group_info->gid[i] = kgid;
486 len = qword_get(&mesg, buf, mlen);
489 gm = rsci.cred.cr_gss_mech = gss_mech_get_by_name(buf);
490 status = -EOPNOTSUPP;
495 /* mech-specific data: */
496 len = qword_get(&mesg, buf, mlen);
499 status = gss_import_sec_context(buf, len, gm, &rsci.mechctx,
504 /* get client name */
505 len = qword_get(&mesg, buf, mlen);
507 rsci.cred.cr_principal = kstrdup(buf, GFP_KERNEL);
508 if (!rsci.cred.cr_principal) {
515 rsci.h.expiry_time = expiry;
516 rscp = rsc_update(cd, &rsci, rscp);
521 cache_put(&rscp->h, cd);
527 static struct cache_detail rsc_cache_template = {
528 .owner = THIS_MODULE,
529 .hash_size = RSC_HASHMAX,
530 .name = "auth.rpcsec.context",
531 .cache_put = rsc_put,
532 .cache_parse = rsc_parse,
535 .update = update_rsc,
539 static struct rsc *rsc_lookup(struct cache_detail *cd, struct rsc *item)
541 struct cache_head *ch;
542 int hash = rsc_hash(item);
544 ch = sunrpc_cache_lookup(cd, &item->h, hash);
546 return container_of(ch, struct rsc, h);
551 static struct rsc *rsc_update(struct cache_detail *cd, struct rsc *new, struct rsc *old)
553 struct cache_head *ch;
554 int hash = rsc_hash(new);
556 ch = sunrpc_cache_update(cd, &new->h,
559 return container_of(ch, struct rsc, h);
566 gss_svc_searchbyctx(struct cache_detail *cd, struct xdr_netobj *handle)
571 memset(&rsci, 0, sizeof(rsci));
572 if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
574 found = rsc_lookup(cd, &rsci);
578 if (cache_check(cd, &found->h, NULL))
583 /* Implements sequence number algorithm as specified in RFC 2203. */
585 gss_check_seq_num(struct rsc *rsci, int seq_num)
587 struct gss_svc_seq_data *sd = &rsci->seqdata;
589 spin_lock(&sd->sd_lock);
590 if (seq_num > sd->sd_max) {
591 if (seq_num >= sd->sd_max + GSS_SEQ_WIN) {
592 memset(sd->sd_win,0,sizeof(sd->sd_win));
593 sd->sd_max = seq_num;
594 } else while (sd->sd_max < seq_num) {
596 __clear_bit(sd->sd_max % GSS_SEQ_WIN, sd->sd_win);
598 __set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win);
600 } else if (seq_num <= sd->sd_max - GSS_SEQ_WIN) {
603 /* sd_max - GSS_SEQ_WIN < seq_num <= sd_max */
604 if (__test_and_set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win))
607 spin_unlock(&sd->sd_lock);
610 spin_unlock(&sd->sd_lock);
614 static inline u32 round_up_to_quad(u32 i)
616 return (i + 3 ) & ~3;
620 svc_safe_getnetobj(struct kvec *argv, struct xdr_netobj *o)
624 if (argv->iov_len < 4)
626 o->len = svc_getnl(argv);
627 l = round_up_to_quad(o->len);
628 if (argv->iov_len < l)
630 o->data = argv->iov_base;
637 svc_safe_putnetobj(struct kvec *resv, struct xdr_netobj *o)
641 if (resv->iov_len + 4 > PAGE_SIZE)
643 svc_putnl(resv, o->len);
644 p = resv->iov_base + resv->iov_len;
645 resv->iov_len += round_up_to_quad(o->len);
646 if (resv->iov_len > PAGE_SIZE)
648 memcpy(p, o->data, o->len);
649 memset(p + o->len, 0, round_up_to_quad(o->len) - o->len);
654 * Verify the checksum on the header and return SVC_OK on success.
655 * Otherwise, return SVC_DROP (in the case of a bad sequence number)
656 * or return SVC_DENIED and indicate error in authp.
659 gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci,
660 __be32 *rpcstart, struct rpc_gss_wire_cred *gc, __be32 *authp)
662 struct gss_ctx *ctx_id = rsci->mechctx;
663 struct xdr_buf rpchdr;
664 struct xdr_netobj checksum;
666 struct kvec *argv = &rqstp->rq_arg.head[0];
669 /* data to compute the checksum over: */
670 iov.iov_base = rpcstart;
671 iov.iov_len = (u8 *)argv->iov_base - (u8 *)rpcstart;
672 xdr_buf_from_iov(&iov, &rpchdr);
674 *authp = rpc_autherr_badverf;
675 if (argv->iov_len < 4)
677 flavor = svc_getnl(argv);
678 if (flavor != RPC_AUTH_GSS)
680 if (svc_safe_getnetobj(argv, &checksum))
683 if (rqstp->rq_deferred) /* skip verification of revisited request */
685 if (gss_verify_mic(ctx_id, &rpchdr, &checksum) != GSS_S_COMPLETE) {
686 *authp = rpcsec_gsserr_credproblem;
690 if (gc->gc_seq > MAXSEQ) {
691 dprintk("RPC: svcauth_gss: discarding request with "
692 "large sequence number %d\n", gc->gc_seq);
693 *authp = rpcsec_gsserr_ctxproblem;
696 if (!gss_check_seq_num(rsci, gc->gc_seq)) {
697 dprintk("RPC: svcauth_gss: discarding request with "
698 "old sequence number %d\n", gc->gc_seq);
705 gss_write_null_verf(struct svc_rqst *rqstp)
709 svc_putnl(rqstp->rq_res.head, RPC_AUTH_NULL);
710 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
711 /* don't really need to check if head->iov_len > PAGE_SIZE ... */
713 if (!xdr_ressize_check(rqstp, p))
719 gss_write_verf(struct svc_rqst *rqstp, struct gss_ctx *ctx_id, u32 seq)
723 struct xdr_buf verf_data;
724 struct xdr_netobj mic;
729 svc_putnl(rqstp->rq_res.head, RPC_AUTH_GSS);
730 xdr_seq = kmalloc(4, GFP_KERNEL);
733 *xdr_seq = htonl(seq);
735 iov.iov_base = xdr_seq;
737 xdr_buf_from_iov(&iov, &verf_data);
738 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
739 mic.data = (u8 *)(p + 1);
740 maj_stat = gss_get_mic(ctx_id, &verf_data, &mic);
741 if (maj_stat != GSS_S_COMPLETE)
743 *p++ = htonl(mic.len);
744 memset((u8 *)p + mic.len, 0, round_up_to_quad(mic.len) - mic.len);
745 p += XDR_QUADLEN(mic.len);
746 if (!xdr_ressize_check(rqstp, p))
755 struct auth_domain h;
759 static struct auth_domain *
760 find_gss_auth_domain(struct gss_ctx *ctx, u32 svc)
764 name = gss_service_to_auth_domain_name(ctx->mech_type, svc);
767 return auth_domain_find(name);
770 static struct auth_ops svcauthops_gss;
772 u32 svcauth_gss_flavor(struct auth_domain *dom)
774 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
776 return gd->pseudoflavor;
779 EXPORT_SYMBOL_GPL(svcauth_gss_flavor);
782 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
784 struct gss_domain *new;
785 struct auth_domain *test;
788 new = kmalloc(sizeof(*new), GFP_KERNEL);
791 kref_init(&new->h.ref);
792 new->h.name = kstrdup(name, GFP_KERNEL);
795 new->h.flavour = &svcauthops_gss;
796 new->pseudoflavor = pseudoflavor;
799 test = auth_domain_lookup(name, &new->h);
800 if (test != &new->h) { /* Duplicate registration */
801 auth_domain_put(test);
813 EXPORT_SYMBOL_GPL(svcauth_gss_register_pseudoflavor);
816 read_u32_from_xdr_buf(struct xdr_buf *buf, int base, u32 *obj)
821 status = read_bytes_from_xdr_buf(buf, base, &raw, sizeof(*obj));
828 /* It would be nice if this bit of code could be shared with the client.
830 * The client shouldn't malloc(), would have to pass in own memory.
831 * The server uses base of head iovec as read pointer, while the
832 * client uses separate pointer. */
834 unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
837 u32 integ_len, maj_stat;
838 struct xdr_netobj mic;
839 struct xdr_buf integ_buf;
841 /* NFS READ normally uses splice to send data in-place. However
842 * the data in cache can change after the reply's MIC is computed
843 * but before the RPC reply is sent. To prevent the client from
844 * rejecting the server-computed MIC in this somewhat rare case,
845 * do not use splice with the GSS integrity service.
847 clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
849 /* Did we already verify the signature on the original pass through? */
850 if (rqstp->rq_deferred)
853 integ_len = svc_getnl(&buf->head[0]);
856 if (integ_len > buf->len)
858 if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len)) {
862 /* copy out mic... */
863 if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
865 if (mic.len > RPC_MAX_AUTH_SIZE)
867 mic.data = kmalloc(mic.len, GFP_KERNEL);
870 if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
872 maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
873 if (maj_stat != GSS_S_COMPLETE)
875 if (svc_getnl(&buf->head[0]) != seq)
877 /* trim off the mic and padding at the end before returning */
878 xdr_buf_trim(buf, round_up_to_quad(mic.len) + 4);
886 total_buf_len(struct xdr_buf *buf)
888 return buf->head[0].iov_len + buf->page_len + buf->tail[0].iov_len;
892 fix_priv_head(struct xdr_buf *buf, int pad)
894 if (buf->page_len == 0) {
895 /* We need to adjust head and buf->len in tandem in this
896 * case to make svc_defer() work--it finds the original
897 * buffer start using buf->len - buf->head[0].iov_len. */
898 buf->head[0].iov_len -= pad;
903 unwrap_priv_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
905 u32 priv_len, maj_stat;
906 int pad, saved_len, remaining_len, offset;
908 clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
910 priv_len = svc_getnl(&buf->head[0]);
911 if (rqstp->rq_deferred) {
912 /* Already decrypted last time through! The sequence number
913 * check at out_seq is unnecessary but harmless: */
916 /* buf->len is the number of bytes from the original start of the
917 * request to the end, where head[0].iov_len is just the bytes
918 * not yet read from the head, so these two values are different: */
919 remaining_len = total_buf_len(buf);
920 if (priv_len > remaining_len)
922 pad = remaining_len - priv_len;
924 fix_priv_head(buf, pad);
926 /* Maybe it would be better to give gss_unwrap a length parameter: */
927 saved_len = buf->len;
929 maj_stat = gss_unwrap(ctx, 0, buf);
930 pad = priv_len - buf->len;
931 buf->len = saved_len;
933 /* The upper layers assume the buffer is aligned on 4-byte boundaries.
934 * In the krb5p case, at least, the data ends up offset, so we need to
936 /* XXX: This is very inefficient. It would be better to either do
937 * this while we encrypt, or maybe in the receive code, if we can peak
938 * ahead and work out the service and mechanism there. */
939 offset = buf->head[0].iov_len % 4;
941 buf->buflen = RPCSVC_MAXPAYLOAD;
942 xdr_shift_buf(buf, offset);
943 fix_priv_head(buf, pad);
945 if (maj_stat != GSS_S_COMPLETE)
948 if (svc_getnl(&buf->head[0]) != seq)
953 struct gss_svc_data {
954 /* decoded gss client cred: */
955 struct rpc_gss_wire_cred clcred;
956 /* save a pointer to the beginning of the encoded verifier,
957 * for use in encryption/checksumming in svcauth_gss_release: */
963 svcauth_gss_set_client(struct svc_rqst *rqstp)
965 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
966 struct rsc *rsci = svcdata->rsci;
967 struct rpc_gss_wire_cred *gc = &svcdata->clcred;
971 * A gss export can be specified either by:
972 * export *(sec=krb5,rw)
974 * export gss/krb5(rw)
975 * The latter is deprecated; but for backwards compatibility reasons
976 * the nfsd code will still fall back on trying it if the former
977 * doesn't work; so we try to make both available to nfsd, below.
979 rqstp->rq_gssclient = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
980 if (rqstp->rq_gssclient == NULL)
982 stat = svcauth_unix_set_client(rqstp);
983 if (stat == SVC_DROP || stat == SVC_CLOSE)
989 gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp,
990 struct xdr_netobj *out_handle, int *major_status)
995 if (*major_status != GSS_S_COMPLETE)
996 return gss_write_null_verf(rqstp);
997 rsci = gss_svc_searchbyctx(cd, out_handle);
999 *major_status = GSS_S_NO_CONTEXT;
1000 return gss_write_null_verf(rqstp);
1002 rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN);
1003 cache_put(&rsci->h, cd);
1008 gss_read_common_verf(struct rpc_gss_wire_cred *gc,
1009 struct kvec *argv, __be32 *authp,
1010 struct xdr_netobj *in_handle)
1012 /* Read the verifier; should be NULL: */
1013 *authp = rpc_autherr_badverf;
1014 if (argv->iov_len < 2 * 4)
1016 if (svc_getnl(argv) != RPC_AUTH_NULL)
1018 if (svc_getnl(argv) != 0)
1020 /* Martial context handle and token for upcall: */
1021 *authp = rpc_autherr_badcred;
1022 if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
1024 if (dup_netobj(in_handle, &gc->gc_ctx))
1026 *authp = rpc_autherr_badverf;
1032 gss_read_verf(struct rpc_gss_wire_cred *gc,
1033 struct kvec *argv, __be32 *authp,
1034 struct xdr_netobj *in_handle,
1035 struct xdr_netobj *in_token)
1037 struct xdr_netobj tmpobj;
1040 res = gss_read_common_verf(gc, argv, authp, in_handle);
1044 if (svc_safe_getnetobj(argv, &tmpobj)) {
1045 kfree(in_handle->data);
1048 if (dup_netobj(in_token, &tmpobj)) {
1049 kfree(in_handle->data);
1056 /* Ok this is really heavily depending on a set of semantics in
1057 * how rqstp is set up by svc_recv and pages laid down by the
1058 * server when reading a request. We are basically guaranteed that
1059 * the token lays all down linearly across a set of pages, starting
1060 * at iov_base in rq_arg.head[0] which happens to be the first of a
1061 * set of pages stored in rq_pages[].
1062 * rq_arg.head[0].iov_base will provide us the page_base to pass
1066 gss_read_proxy_verf(struct svc_rqst *rqstp,
1067 struct rpc_gss_wire_cred *gc, __be32 *authp,
1068 struct xdr_netobj *in_handle,
1069 struct gssp_in_token *in_token)
1071 struct kvec *argv = &rqstp->rq_arg.head[0];
1075 res = gss_read_common_verf(gc, argv, authp, in_handle);
1079 inlen = svc_getnl(argv);
1080 if (inlen > (argv->iov_len + rqstp->rq_arg.page_len))
1083 in_token->pages = rqstp->rq_pages;
1084 in_token->page_base = (ulong)argv->iov_base & ~PAGE_MASK;
1085 in_token->page_len = inlen;
1091 gss_write_resv(struct kvec *resv, size_t size_limit,
1092 struct xdr_netobj *out_handle, struct xdr_netobj *out_token,
1093 int major_status, int minor_status)
1095 if (resv->iov_len + 4 > size_limit)
1097 svc_putnl(resv, RPC_SUCCESS);
1098 if (svc_safe_putnetobj(resv, out_handle))
1100 if (resv->iov_len + 3 * 4 > size_limit)
1102 svc_putnl(resv, major_status);
1103 svc_putnl(resv, minor_status);
1104 svc_putnl(resv, GSS_SEQ_WIN);
1105 if (svc_safe_putnetobj(resv, out_token))
1111 * Having read the cred already and found we're in the context
1112 * initiation case, read the verifier and initiate (or check the results
1113 * of) upcalls to userspace for help with context initiation. If
1114 * the upcall results are available, write the verifier and result.
1115 * Otherwise, drop the request pending an answer to the upcall.
1117 static int svcauth_gss_legacy_init(struct svc_rqst *rqstp,
1118 struct rpc_gss_wire_cred *gc, __be32 *authp)
1120 struct kvec *argv = &rqstp->rq_arg.head[0];
1121 struct kvec *resv = &rqstp->rq_res.head[0];
1122 struct rsi *rsip, rsikey;
1124 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1126 memset(&rsikey, 0, sizeof(rsikey));
1127 ret = gss_read_verf(gc, argv, authp,
1128 &rsikey.in_handle, &rsikey.in_token);
1132 /* Perform upcall, or find upcall result: */
1133 rsip = rsi_lookup(sn->rsi_cache, &rsikey);
1137 if (cache_check(sn->rsi_cache, &rsip->h, &rqstp->rq_chandle) < 0)
1138 /* No upcall result: */
1142 /* Got an answer to the upcall; use it: */
1143 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1144 &rsip->out_handle, &rsip->major_status))
1146 if (gss_write_resv(resv, PAGE_SIZE,
1147 &rsip->out_handle, &rsip->out_token,
1148 rsip->major_status, rsip->minor_status))
1153 cache_put(&rsip->h, sn->rsi_cache);
1157 static int gss_proxy_save_rsc(struct cache_detail *cd,
1158 struct gssp_upcall_data *ud,
1161 struct rsc rsci, *rscp = NULL;
1162 static atomic64_t ctxhctr;
1164 struct gss_api_mech *gm = NULL;
1166 int status = -EINVAL;
1168 memset(&rsci, 0, sizeof(rsci));
1169 /* context handle */
1171 /* the handle needs to be just a unique id,
1172 * use a static counter */
1173 ctxh = atomic64_inc_return(&ctxhctr);
1175 /* make a copy for the caller */
1178 /* make a copy for the rsc cache */
1179 if (dup_to_netobj(&rsci.handle, (char *)handle, sizeof(uint64_t)))
1181 rscp = rsc_lookup(cd, &rsci);
1186 if (!ud->found_creds) {
1187 /* userspace seem buggy, we should always get at least a
1188 * mapping to nobody */
1189 dprintk("RPC: No creds found!\n");
1194 rsci.cred = ud->creds;
1195 memset(&ud->creds, 0, sizeof(struct svc_cred));
1197 status = -EOPNOTSUPP;
1198 /* get mech handle from OID */
1199 gm = gss_mech_get_by_OID(&ud->mech_oid);
1202 rsci.cred.cr_gss_mech = gm;
1205 /* mech-specific data: */
1206 status = gss_import_sec_context(ud->out_handle.data,
1209 &expiry, GFP_KERNEL);
1214 rsci.h.expiry_time = expiry;
1215 rscp = rsc_update(cd, &rsci, rscp);
1220 cache_put(&rscp->h, cd);
1226 static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
1227 struct rpc_gss_wire_cred *gc, __be32 *authp)
1229 struct kvec *resv = &rqstp->rq_res.head[0];
1230 struct xdr_netobj cli_handle;
1231 struct gssp_upcall_data ud;
1235 struct net *net = rqstp->rq_xprt->xpt_net;
1236 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1238 memset(&ud, 0, sizeof(ud));
1239 ret = gss_read_proxy_verf(rqstp, gc, authp,
1240 &ud.in_handle, &ud.in_token);
1246 /* Perform synchronous upcall to gss-proxy */
1247 status = gssp_accept_sec_context_upcall(net, &ud);
1251 dprintk("RPC: svcauth_gss: gss major status = %d "
1252 "minor status = %d\n",
1253 ud.major_status, ud.minor_status);
1255 switch (ud.major_status) {
1256 case GSS_S_CONTINUE_NEEDED:
1257 cli_handle = ud.out_handle;
1259 case GSS_S_COMPLETE:
1260 status = gss_proxy_save_rsc(sn->rsc_cache, &ud, &handle);
1263 cli_handle.data = (u8 *)&handle;
1264 cli_handle.len = sizeof(handle);
1271 /* Got an answer to the upcall; use it: */
1272 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1273 &cli_handle, &ud.major_status))
1275 if (gss_write_resv(resv, PAGE_SIZE,
1276 &cli_handle, &ud.out_token,
1277 ud.major_status, ud.minor_status))
1282 gssp_free_upcall_data(&ud);
1287 * Try to set the sn->use_gss_proxy variable to a new value. We only allow
1288 * it to be changed if it's currently undefined (-1). If it's any other value
1289 * then return -EBUSY unless the type wouldn't have changed anyway.
1291 static int set_gss_proxy(struct net *net, int type)
1293 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1296 WARN_ON_ONCE(type != 0 && type != 1);
1297 ret = cmpxchg(&sn->use_gss_proxy, -1, type);
1298 if (ret != -1 && ret != type)
1303 static bool use_gss_proxy(struct net *net)
1305 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1307 /* If use_gss_proxy is still undefined, then try to disable it */
1308 if (sn->use_gss_proxy == -1)
1309 set_gss_proxy(net, 0);
1310 return sn->use_gss_proxy;
1313 #ifdef CONFIG_PROC_FS
1315 static ssize_t write_gssp(struct file *file, const char __user *buf,
1316 size_t count, loff_t *ppos)
1318 struct net *net = PDE_DATA(file_inode(file));
1323 if (*ppos || count > sizeof(tbuf)-1)
1325 if (copy_from_user(tbuf, buf, count))
1329 res = kstrtoul(tbuf, 0, &i);
1334 res = set_gssp_clnt(net);
1337 res = set_gss_proxy(net, 1);
1343 static ssize_t read_gssp(struct file *file, char __user *buf,
1344 size_t count, loff_t *ppos)
1346 struct net *net = PDE_DATA(file_inode(file));
1347 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1348 unsigned long p = *ppos;
1352 snprintf(tbuf, sizeof(tbuf), "%d\n", sn->use_gss_proxy);
1359 if (copy_to_user(buf, (void *)(tbuf+p), len))
1365 static const struct file_operations use_gss_proxy_ops = {
1366 .open = nonseekable_open,
1367 .write = write_gssp,
1371 static int create_use_gss_proxy_proc_entry(struct net *net)
1373 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1374 struct proc_dir_entry **p = &sn->use_gssp_proc;
1376 sn->use_gss_proxy = -1;
1377 *p = proc_create_data("use-gss-proxy", S_IFREG|S_IRUSR|S_IWUSR,
1379 &use_gss_proxy_ops, net);
1386 static void destroy_use_gss_proxy_proc_entry(struct net *net)
1388 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1390 if (sn->use_gssp_proc) {
1391 remove_proc_entry("use-gss-proxy", sn->proc_net_rpc);
1392 clear_gssp_clnt(sn);
1395 #else /* CONFIG_PROC_FS */
1397 static int create_use_gss_proxy_proc_entry(struct net *net)
1402 static void destroy_use_gss_proxy_proc_entry(struct net *net) {}
1404 #endif /* CONFIG_PROC_FS */
1407 * Accept an rpcsec packet.
1408 * If context establishment, punt to user space
1409 * If data exchange, verify/decrypt
1410 * If context destruction, handle here
1411 * In the context establishment and destruction case we encode
1412 * response here and return SVC_COMPLETE.
1415 svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
1417 struct kvec *argv = &rqstp->rq_arg.head[0];
1418 struct kvec *resv = &rqstp->rq_res.head[0];
1420 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
1421 struct rpc_gss_wire_cred *gc;
1422 struct rsc *rsci = NULL;
1424 __be32 *reject_stat = resv->iov_base + resv->iov_len;
1426 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1428 dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
1431 *authp = rpc_autherr_badcred;
1433 svcdata = kmalloc(sizeof(*svcdata), GFP_KERNEL);
1436 rqstp->rq_auth_data = svcdata;
1437 svcdata->verf_start = NULL;
1438 svcdata->rsci = NULL;
1439 gc = &svcdata->clcred;
1441 /* start of rpc packet is 7 u32's back from here:
1442 * xid direction rpcversion prog vers proc flavour
1444 rpcstart = argv->iov_base;
1448 * version(==1), proc(0,1,2,3), seq, service (1,2,3), handle
1449 * at least 5 u32s, and is preceded by length, so that makes 6.
1452 if (argv->iov_len < 5 * 4)
1454 crlen = svc_getnl(argv);
1455 if (svc_getnl(argv) != RPC_GSS_VERSION)
1457 gc->gc_proc = svc_getnl(argv);
1458 gc->gc_seq = svc_getnl(argv);
1459 gc->gc_svc = svc_getnl(argv);
1460 if (svc_safe_getnetobj(argv, &gc->gc_ctx))
1462 if (crlen != round_up_to_quad(gc->gc_ctx.len) + 5 * 4)
1465 if ((gc->gc_proc != RPC_GSS_PROC_DATA) && (rqstp->rq_proc != 0))
1468 *authp = rpc_autherr_badverf;
1469 switch (gc->gc_proc) {
1470 case RPC_GSS_PROC_INIT:
1471 case RPC_GSS_PROC_CONTINUE_INIT:
1472 if (use_gss_proxy(SVC_NET(rqstp)))
1473 return svcauth_gss_proxy_init(rqstp, gc, authp);
1475 return svcauth_gss_legacy_init(rqstp, gc, authp);
1476 case RPC_GSS_PROC_DATA:
1477 case RPC_GSS_PROC_DESTROY:
1478 /* Look up the context, and check the verifier: */
1479 *authp = rpcsec_gsserr_credproblem;
1480 rsci = gss_svc_searchbyctx(sn->rsc_cache, &gc->gc_ctx);
1483 switch (gss_verify_header(rqstp, rsci, rpcstart, gc, authp)) {
1493 *authp = rpc_autherr_rejectedcred;
1497 /* now act upon the command: */
1498 switch (gc->gc_proc) {
1499 case RPC_GSS_PROC_DESTROY:
1500 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1502 /* Delete the entry from the cache_list and call cache_put */
1503 sunrpc_cache_unhash(sn->rsc_cache, &rsci->h);
1504 if (resv->iov_len + 4 > PAGE_SIZE)
1506 svc_putnl(resv, RPC_SUCCESS);
1508 case RPC_GSS_PROC_DATA:
1509 *authp = rpcsec_gsserr_ctxproblem;
1510 svcdata->verf_start = resv->iov_base + resv->iov_len;
1511 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1513 rqstp->rq_cred = rsci->cred;
1514 get_group_info(rsci->cred.cr_group_info);
1515 *authp = rpc_autherr_badcred;
1516 switch (gc->gc_svc) {
1517 case RPC_GSS_SVC_NONE:
1519 case RPC_GSS_SVC_INTEGRITY:
1520 /* placeholders for length and seq. number: */
1523 if (unwrap_integ_data(rqstp, &rqstp->rq_arg,
1524 gc->gc_seq, rsci->mechctx))
1526 rqstp->rq_auth_slack = RPC_MAX_AUTH_SIZE;
1528 case RPC_GSS_SVC_PRIVACY:
1529 /* placeholders for length and seq. number: */
1532 if (unwrap_priv_data(rqstp, &rqstp->rq_arg,
1533 gc->gc_seq, rsci->mechctx))
1535 rqstp->rq_auth_slack = RPC_MAX_AUTH_SIZE * 2;
1540 svcdata->rsci = rsci;
1541 cache_get(&rsci->h);
1542 rqstp->rq_cred.cr_flavor = gss_svc_to_pseudoflavor(
1543 rsci->mechctx->mech_type,
1553 /* Restore write pointer to its original value: */
1554 xdr_ressize_check(rqstp, reject_stat);
1564 cache_put(&rsci->h, sn->rsc_cache);
1569 svcauth_gss_prepare_to_wrap(struct xdr_buf *resbuf, struct gss_svc_data *gsd)
1574 p = gsd->verf_start;
1575 gsd->verf_start = NULL;
1577 /* If the reply stat is nonzero, don't wrap: */
1578 if (*(p-1) != rpc_success)
1580 /* Skip the verifier: */
1582 verf_len = ntohl(*p++);
1583 p += XDR_QUADLEN(verf_len);
1584 /* move accept_stat to right place: */
1585 memcpy(p, p + 2, 4);
1586 /* Also don't wrap if the accept stat is nonzero: */
1587 if (*p != rpc_success) {
1588 resbuf->head[0].iov_len -= 2 * 4;
1596 svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
1598 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1599 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1600 struct xdr_buf *resbuf = &rqstp->rq_res;
1601 struct xdr_buf integ_buf;
1602 struct xdr_netobj mic;
1605 int integ_offset, integ_len;
1608 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1611 integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
1612 integ_len = resbuf->len - integ_offset;
1613 BUG_ON(integ_len % 4);
1614 *p++ = htonl(integ_len);
1615 *p++ = htonl(gc->gc_seq);
1616 if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset, integ_len)) {
1620 if (resbuf->tail[0].iov_base == NULL) {
1621 if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1623 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1624 + resbuf->head[0].iov_len;
1625 resbuf->tail[0].iov_len = 0;
1627 resv = &resbuf->tail[0];
1628 mic.data = (u8 *)resv->iov_base + resv->iov_len + 4;
1629 if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic))
1631 svc_putnl(resv, mic.len);
1632 memset(mic.data + mic.len, 0,
1633 round_up_to_quad(mic.len) - mic.len);
1634 resv->iov_len += XDR_QUADLEN(mic.len) << 2;
1635 /* not strictly required: */
1636 resbuf->len += XDR_QUADLEN(mic.len) << 2;
1637 BUG_ON(resv->iov_len > PAGE_SIZE);
1645 svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
1647 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1648 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1649 struct xdr_buf *resbuf = &rqstp->rq_res;
1650 struct page **inpages = NULL;
1655 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1659 offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
1660 *p++ = htonl(gc->gc_seq);
1661 inpages = resbuf->pages;
1662 /* XXX: Would be better to write some xdr helper functions for
1663 * nfs{2,3,4}xdr.c that place the data right, instead of copying: */
1666 * If there is currently tail data, make sure there is
1667 * room for the head, tail, and 2 * RPC_MAX_AUTH_SIZE in
1668 * the page, and move the current tail data such that
1669 * there is RPC_MAX_AUTH_SIZE slack space available in
1670 * both the head and tail.
1672 if (resbuf->tail[0].iov_base) {
1673 BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
1675 BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
1676 if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
1677 + 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1679 memmove(resbuf->tail[0].iov_base + RPC_MAX_AUTH_SIZE,
1680 resbuf->tail[0].iov_base,
1681 resbuf->tail[0].iov_len);
1682 resbuf->tail[0].iov_base += RPC_MAX_AUTH_SIZE;
1685 * If there is no current tail data, make sure there is
1686 * room for the head data, and 2 * RPC_MAX_AUTH_SIZE in the
1687 * allotted page, and set up tail information such that there
1688 * is RPC_MAX_AUTH_SIZE slack space available in both the
1691 if (resbuf->tail[0].iov_base == NULL) {
1692 if (resbuf->head[0].iov_len + 2*RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1694 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1695 + resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE;
1696 resbuf->tail[0].iov_len = 0;
1698 if (gss_wrap(gsd->rsci->mechctx, offset, resbuf, inpages))
1700 *len = htonl(resbuf->len - offset);
1701 pad = 3 - ((resbuf->len - offset - 1)&3);
1702 p = (__be32 *)(resbuf->tail[0].iov_base + resbuf->tail[0].iov_len);
1704 resbuf->tail[0].iov_len += pad;
1710 svcauth_gss_release(struct svc_rqst *rqstp)
1712 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1713 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1714 struct xdr_buf *resbuf = &rqstp->rq_res;
1716 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1718 if (gc->gc_proc != RPC_GSS_PROC_DATA)
1720 /* Release can be called twice, but we only wrap once. */
1721 if (gsd->verf_start == NULL)
1723 /* normally not set till svc_send, but we need it here: */
1724 /* XXX: what for? Do we mess it up the moment we call svc_putu32
1726 resbuf->len = total_buf_len(resbuf);
1727 switch (gc->gc_svc) {
1728 case RPC_GSS_SVC_NONE:
1730 case RPC_GSS_SVC_INTEGRITY:
1731 stat = svcauth_gss_wrap_resp_integ(rqstp);
1735 case RPC_GSS_SVC_PRIVACY:
1736 stat = svcauth_gss_wrap_resp_priv(rqstp);
1741 * For any other gc_svc value, svcauth_gss_accept() already set
1742 * the auth_error appropriately; just fall through:
1749 if (rqstp->rq_client)
1750 auth_domain_put(rqstp->rq_client);
1751 rqstp->rq_client = NULL;
1752 if (rqstp->rq_gssclient)
1753 auth_domain_put(rqstp->rq_gssclient);
1754 rqstp->rq_gssclient = NULL;
1755 if (rqstp->rq_cred.cr_group_info)
1756 put_group_info(rqstp->rq_cred.cr_group_info);
1757 rqstp->rq_cred.cr_group_info = NULL;
1759 cache_put(&gsd->rsci->h, sn->rsc_cache);
1766 svcauth_gss_domain_release(struct auth_domain *dom)
1768 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
1774 static struct auth_ops svcauthops_gss = {
1775 .name = "rpcsec_gss",
1776 .owner = THIS_MODULE,
1777 .flavour = RPC_AUTH_GSS,
1778 .accept = svcauth_gss_accept,
1779 .release = svcauth_gss_release,
1780 .domain_release = svcauth_gss_domain_release,
1781 .set_client = svcauth_gss_set_client,
1784 static int rsi_cache_create_net(struct net *net)
1786 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1787 struct cache_detail *cd;
1790 cd = cache_create_net(&rsi_cache_template, net);
1793 err = cache_register_net(cd, net);
1795 cache_destroy_net(cd, net);
1802 static void rsi_cache_destroy_net(struct net *net)
1804 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1805 struct cache_detail *cd = sn->rsi_cache;
1807 sn->rsi_cache = NULL;
1809 cache_unregister_net(cd, net);
1810 cache_destroy_net(cd, net);
1813 static int rsc_cache_create_net(struct net *net)
1815 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1816 struct cache_detail *cd;
1819 cd = cache_create_net(&rsc_cache_template, net);
1822 err = cache_register_net(cd, net);
1824 cache_destroy_net(cd, net);
1831 static void rsc_cache_destroy_net(struct net *net)
1833 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1834 struct cache_detail *cd = sn->rsc_cache;
1836 sn->rsc_cache = NULL;
1838 cache_unregister_net(cd, net);
1839 cache_destroy_net(cd, net);
1843 gss_svc_init_net(struct net *net)
1847 rv = rsc_cache_create_net(net);
1850 rv = rsi_cache_create_net(net);
1853 rv = create_use_gss_proxy_proc_entry(net);
1858 destroy_use_gss_proxy_proc_entry(net);
1860 rsc_cache_destroy_net(net);
1865 gss_svc_shutdown_net(struct net *net)
1867 destroy_use_gss_proxy_proc_entry(net);
1868 rsi_cache_destroy_net(net);
1869 rsc_cache_destroy_net(net);
1875 return svc_auth_register(RPC_AUTH_GSS, &svcauthops_gss);
1879 gss_svc_shutdown(void)
1881 svc_auth_unregister(RPC_AUTH_GSS);