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"
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))
467 rsci.cred.cr_group_info = groups_alloc(N);
468 if (rsci.cred.cr_group_info == NULL)
473 for (i=0; i<N; i++) {
475 if (get_int(&mesg, &id))
477 kgid = make_kgid(&init_user_ns, id);
478 if (!gid_valid(kgid))
480 GROUP_AT(rsci.cred.cr_group_info, i) = kgid;
484 len = qword_get(&mesg, buf, mlen);
487 gm = rsci.cred.cr_gss_mech = gss_mech_get_by_name(buf);
488 status = -EOPNOTSUPP;
493 /* mech-specific data: */
494 len = qword_get(&mesg, buf, mlen);
497 status = gss_import_sec_context(buf, len, gm, &rsci.mechctx,
502 /* get client name */
503 len = qword_get(&mesg, buf, mlen);
505 rsci.cred.cr_principal = kstrdup(buf, GFP_KERNEL);
506 if (!rsci.cred.cr_principal) {
513 rsci.h.expiry_time = expiry;
514 rscp = rsc_update(cd, &rsci, rscp);
519 cache_put(&rscp->h, cd);
525 static struct cache_detail rsc_cache_template = {
526 .owner = THIS_MODULE,
527 .hash_size = RSC_HASHMAX,
528 .name = "auth.rpcsec.context",
529 .cache_put = rsc_put,
530 .cache_parse = rsc_parse,
533 .update = update_rsc,
537 static struct rsc *rsc_lookup(struct cache_detail *cd, struct rsc *item)
539 struct cache_head *ch;
540 int hash = rsc_hash(item);
542 ch = sunrpc_cache_lookup(cd, &item->h, hash);
544 return container_of(ch, struct rsc, h);
549 static struct rsc *rsc_update(struct cache_detail *cd, struct rsc *new, struct rsc *old)
551 struct cache_head *ch;
552 int hash = rsc_hash(new);
554 ch = sunrpc_cache_update(cd, &new->h,
557 return container_of(ch, struct rsc, h);
564 gss_svc_searchbyctx(struct cache_detail *cd, struct xdr_netobj *handle)
569 memset(&rsci, 0, sizeof(rsci));
570 if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
572 found = rsc_lookup(cd, &rsci);
576 if (cache_check(cd, &found->h, NULL))
581 /* Implements sequence number algorithm as specified in RFC 2203. */
583 gss_check_seq_num(struct rsc *rsci, int seq_num)
585 struct gss_svc_seq_data *sd = &rsci->seqdata;
587 spin_lock(&sd->sd_lock);
588 if (seq_num > sd->sd_max) {
589 if (seq_num >= sd->sd_max + GSS_SEQ_WIN) {
590 memset(sd->sd_win,0,sizeof(sd->sd_win));
591 sd->sd_max = seq_num;
592 } else while (sd->sd_max < seq_num) {
594 __clear_bit(sd->sd_max % GSS_SEQ_WIN, sd->sd_win);
596 __set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win);
598 } else if (seq_num <= sd->sd_max - GSS_SEQ_WIN) {
601 /* sd_max - GSS_SEQ_WIN < seq_num <= sd_max */
602 if (__test_and_set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win))
605 spin_unlock(&sd->sd_lock);
608 spin_unlock(&sd->sd_lock);
612 static inline u32 round_up_to_quad(u32 i)
614 return (i + 3 ) & ~3;
618 svc_safe_getnetobj(struct kvec *argv, struct xdr_netobj *o)
622 if (argv->iov_len < 4)
624 o->len = svc_getnl(argv);
625 l = round_up_to_quad(o->len);
626 if (argv->iov_len < l)
628 o->data = argv->iov_base;
635 svc_safe_putnetobj(struct kvec *resv, struct xdr_netobj *o)
639 if (resv->iov_len + 4 > PAGE_SIZE)
641 svc_putnl(resv, o->len);
642 p = resv->iov_base + resv->iov_len;
643 resv->iov_len += round_up_to_quad(o->len);
644 if (resv->iov_len > PAGE_SIZE)
646 memcpy(p, o->data, o->len);
647 memset(p + o->len, 0, round_up_to_quad(o->len) - o->len);
652 * Verify the checksum on the header and return SVC_OK on success.
653 * Otherwise, return SVC_DROP (in the case of a bad sequence number)
654 * or return SVC_DENIED and indicate error in authp.
657 gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci,
658 __be32 *rpcstart, struct rpc_gss_wire_cred *gc, __be32 *authp)
660 struct gss_ctx *ctx_id = rsci->mechctx;
661 struct xdr_buf rpchdr;
662 struct xdr_netobj checksum;
664 struct kvec *argv = &rqstp->rq_arg.head[0];
667 /* data to compute the checksum over: */
668 iov.iov_base = rpcstart;
669 iov.iov_len = (u8 *)argv->iov_base - (u8 *)rpcstart;
670 xdr_buf_from_iov(&iov, &rpchdr);
672 *authp = rpc_autherr_badverf;
673 if (argv->iov_len < 4)
675 flavor = svc_getnl(argv);
676 if (flavor != RPC_AUTH_GSS)
678 if (svc_safe_getnetobj(argv, &checksum))
681 if (rqstp->rq_deferred) /* skip verification of revisited request */
683 if (gss_verify_mic(ctx_id, &rpchdr, &checksum) != GSS_S_COMPLETE) {
684 *authp = rpcsec_gsserr_credproblem;
688 if (gc->gc_seq > MAXSEQ) {
689 dprintk("RPC: svcauth_gss: discarding request with "
690 "large sequence number %d\n", gc->gc_seq);
691 *authp = rpcsec_gsserr_ctxproblem;
694 if (!gss_check_seq_num(rsci, gc->gc_seq)) {
695 dprintk("RPC: svcauth_gss: discarding request with "
696 "old sequence number %d\n", gc->gc_seq);
703 gss_write_null_verf(struct svc_rqst *rqstp)
707 svc_putnl(rqstp->rq_res.head, RPC_AUTH_NULL);
708 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
709 /* don't really need to check if head->iov_len > PAGE_SIZE ... */
711 if (!xdr_ressize_check(rqstp, p))
717 gss_write_verf(struct svc_rqst *rqstp, struct gss_ctx *ctx_id, u32 seq)
721 struct xdr_buf verf_data;
722 struct xdr_netobj mic;
726 svc_putnl(rqstp->rq_res.head, RPC_AUTH_GSS);
727 xdr_seq = htonl(seq);
729 iov.iov_base = &xdr_seq;
730 iov.iov_len = sizeof(xdr_seq);
731 xdr_buf_from_iov(&iov, &verf_data);
732 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
733 mic.data = (u8 *)(p + 1);
734 maj_stat = gss_get_mic(ctx_id, &verf_data, &mic);
735 if (maj_stat != GSS_S_COMPLETE)
737 *p++ = htonl(mic.len);
738 memset((u8 *)p + mic.len, 0, round_up_to_quad(mic.len) - mic.len);
739 p += XDR_QUADLEN(mic.len);
740 if (!xdr_ressize_check(rqstp, p))
746 struct auth_domain h;
750 static struct auth_domain *
751 find_gss_auth_domain(struct gss_ctx *ctx, u32 svc)
755 name = gss_service_to_auth_domain_name(ctx->mech_type, svc);
758 return auth_domain_find(name);
761 static struct auth_ops svcauthops_gss;
763 u32 svcauth_gss_flavor(struct auth_domain *dom)
765 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
767 return gd->pseudoflavor;
770 EXPORT_SYMBOL_GPL(svcauth_gss_flavor);
773 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
775 struct gss_domain *new;
776 struct auth_domain *test;
779 new = kmalloc(sizeof(*new), GFP_KERNEL);
782 kref_init(&new->h.ref);
783 new->h.name = kstrdup(name, GFP_KERNEL);
786 new->h.flavour = &svcauthops_gss;
787 new->pseudoflavor = pseudoflavor;
790 test = auth_domain_lookup(name, &new->h);
791 if (test != &new->h) { /* Duplicate registration */
792 auth_domain_put(test);
804 EXPORT_SYMBOL_GPL(svcauth_gss_register_pseudoflavor);
807 read_u32_from_xdr_buf(struct xdr_buf *buf, int base, u32 *obj)
812 status = read_bytes_from_xdr_buf(buf, base, &raw, sizeof(*obj));
819 /* It would be nice if this bit of code could be shared with the client.
821 * The client shouldn't malloc(), would have to pass in own memory.
822 * The server uses base of head iovec as read pointer, while the
823 * client uses separate pointer. */
825 unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
828 u32 integ_len, maj_stat;
829 struct xdr_netobj mic;
830 struct xdr_buf integ_buf;
832 /* Did we already verify the signature on the original pass through? */
833 if (rqstp->rq_deferred)
836 integ_len = svc_getnl(&buf->head[0]);
839 if (integ_len > buf->len)
841 if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len))
843 /* copy out mic... */
844 if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
846 if (mic.len > RPC_MAX_AUTH_SIZE)
848 mic.data = kmalloc(mic.len, GFP_KERNEL);
851 if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
853 maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
854 if (maj_stat != GSS_S_COMPLETE)
856 if (svc_getnl(&buf->head[0]) != seq)
858 /* trim off the mic at the end before returning */
859 xdr_buf_trim(buf, mic.len + 4);
867 total_buf_len(struct xdr_buf *buf)
869 return buf->head[0].iov_len + buf->page_len + buf->tail[0].iov_len;
873 fix_priv_head(struct xdr_buf *buf, int pad)
875 if (buf->page_len == 0) {
876 /* We need to adjust head and buf->len in tandem in this
877 * case to make svc_defer() work--it finds the original
878 * buffer start using buf->len - buf->head[0].iov_len. */
879 buf->head[0].iov_len -= pad;
884 unwrap_priv_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
886 u32 priv_len, maj_stat;
887 int pad, saved_len, remaining_len, offset;
889 rqstp->rq_splice_ok = 0;
891 priv_len = svc_getnl(&buf->head[0]);
892 if (rqstp->rq_deferred) {
893 /* Already decrypted last time through! The sequence number
894 * check at out_seq is unnecessary but harmless: */
897 /* buf->len is the number of bytes from the original start of the
898 * request to the end, where head[0].iov_len is just the bytes
899 * not yet read from the head, so these two values are different: */
900 remaining_len = total_buf_len(buf);
901 if (priv_len > remaining_len)
903 pad = remaining_len - priv_len;
905 fix_priv_head(buf, pad);
907 /* Maybe it would be better to give gss_unwrap a length parameter: */
908 saved_len = buf->len;
910 maj_stat = gss_unwrap(ctx, 0, buf);
911 pad = priv_len - buf->len;
912 buf->len = saved_len;
914 /* The upper layers assume the buffer is aligned on 4-byte boundaries.
915 * In the krb5p case, at least, the data ends up offset, so we need to
917 /* XXX: This is very inefficient. It would be better to either do
918 * this while we encrypt, or maybe in the receive code, if we can peak
919 * ahead and work out the service and mechanism there. */
920 offset = buf->head[0].iov_len % 4;
922 buf->buflen = RPCSVC_MAXPAYLOAD;
923 xdr_shift_buf(buf, offset);
924 fix_priv_head(buf, pad);
926 if (maj_stat != GSS_S_COMPLETE)
929 if (svc_getnl(&buf->head[0]) != seq)
934 struct gss_svc_data {
935 /* decoded gss client cred: */
936 struct rpc_gss_wire_cred clcred;
937 /* save a pointer to the beginning of the encoded verifier,
938 * for use in encryption/checksumming in svcauth_gss_release: */
944 svcauth_gss_set_client(struct svc_rqst *rqstp)
946 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
947 struct rsc *rsci = svcdata->rsci;
948 struct rpc_gss_wire_cred *gc = &svcdata->clcred;
952 * A gss export can be specified either by:
953 * export *(sec=krb5,rw)
955 * export gss/krb5(rw)
956 * The latter is deprecated; but for backwards compatibility reasons
957 * the nfsd code will still fall back on trying it if the former
958 * doesn't work; so we try to make both available to nfsd, below.
960 rqstp->rq_gssclient = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
961 if (rqstp->rq_gssclient == NULL)
963 stat = svcauth_unix_set_client(rqstp);
964 if (stat == SVC_DROP || stat == SVC_CLOSE)
970 gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp,
971 struct xdr_netobj *out_handle, int *major_status)
976 if (*major_status != GSS_S_COMPLETE)
977 return gss_write_null_verf(rqstp);
978 rsci = gss_svc_searchbyctx(cd, out_handle);
980 *major_status = GSS_S_NO_CONTEXT;
981 return gss_write_null_verf(rqstp);
983 rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN);
984 cache_put(&rsci->h, cd);
989 gss_read_common_verf(struct rpc_gss_wire_cred *gc,
990 struct kvec *argv, __be32 *authp,
991 struct xdr_netobj *in_handle)
993 /* Read the verifier; should be NULL: */
994 *authp = rpc_autherr_badverf;
995 if (argv->iov_len < 2 * 4)
997 if (svc_getnl(argv) != RPC_AUTH_NULL)
999 if (svc_getnl(argv) != 0)
1001 /* Martial context handle and token for upcall: */
1002 *authp = rpc_autherr_badcred;
1003 if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
1005 if (dup_netobj(in_handle, &gc->gc_ctx))
1007 *authp = rpc_autherr_badverf;
1013 gss_read_verf(struct rpc_gss_wire_cred *gc,
1014 struct kvec *argv, __be32 *authp,
1015 struct xdr_netobj *in_handle,
1016 struct xdr_netobj *in_token)
1018 struct xdr_netobj tmpobj;
1021 res = gss_read_common_verf(gc, argv, authp, in_handle);
1025 if (svc_safe_getnetobj(argv, &tmpobj)) {
1026 kfree(in_handle->data);
1029 if (dup_netobj(in_token, &tmpobj)) {
1030 kfree(in_handle->data);
1037 /* Ok this is really heavily depending on a set of semantics in
1038 * how rqstp is set up by svc_recv and pages laid down by the
1039 * server when reading a request. We are basically guaranteed that
1040 * the token lays all down linearly across a set of pages, starting
1041 * at iov_base in rq_arg.head[0] which happens to be the first of a
1042 * set of pages stored in rq_pages[].
1043 * rq_arg.head[0].iov_base will provide us the page_base to pass
1047 gss_read_proxy_verf(struct svc_rqst *rqstp,
1048 struct rpc_gss_wire_cred *gc, __be32 *authp,
1049 struct xdr_netobj *in_handle,
1050 struct gssp_in_token *in_token)
1052 struct kvec *argv = &rqstp->rq_arg.head[0];
1056 res = gss_read_common_verf(gc, argv, authp, in_handle);
1060 inlen = svc_getnl(argv);
1061 if (inlen > (argv->iov_len + rqstp->rq_arg.page_len))
1064 in_token->pages = rqstp->rq_pages;
1065 in_token->page_base = (ulong)argv->iov_base & ~PAGE_MASK;
1066 in_token->page_len = inlen;
1072 gss_write_resv(struct kvec *resv, size_t size_limit,
1073 struct xdr_netobj *out_handle, struct xdr_netobj *out_token,
1074 int major_status, int minor_status)
1076 if (resv->iov_len + 4 > size_limit)
1078 svc_putnl(resv, RPC_SUCCESS);
1079 if (svc_safe_putnetobj(resv, out_handle))
1081 if (resv->iov_len + 3 * 4 > size_limit)
1083 svc_putnl(resv, major_status);
1084 svc_putnl(resv, minor_status);
1085 svc_putnl(resv, GSS_SEQ_WIN);
1086 if (svc_safe_putnetobj(resv, out_token))
1092 * Having read the cred already and found we're in the context
1093 * initiation case, read the verifier and initiate (or check the results
1094 * of) upcalls to userspace for help with context initiation. If
1095 * the upcall results are available, write the verifier and result.
1096 * Otherwise, drop the request pending an answer to the upcall.
1098 static int svcauth_gss_legacy_init(struct svc_rqst *rqstp,
1099 struct rpc_gss_wire_cred *gc, __be32 *authp)
1101 struct kvec *argv = &rqstp->rq_arg.head[0];
1102 struct kvec *resv = &rqstp->rq_res.head[0];
1103 struct rsi *rsip, rsikey;
1105 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1107 memset(&rsikey, 0, sizeof(rsikey));
1108 ret = gss_read_verf(gc, argv, authp,
1109 &rsikey.in_handle, &rsikey.in_token);
1113 /* Perform upcall, or find upcall result: */
1114 rsip = rsi_lookup(sn->rsi_cache, &rsikey);
1118 if (cache_check(sn->rsi_cache, &rsip->h, &rqstp->rq_chandle) < 0)
1119 /* No upcall result: */
1123 /* Got an answer to the upcall; use it: */
1124 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1125 &rsip->out_handle, &rsip->major_status))
1127 if (gss_write_resv(resv, PAGE_SIZE,
1128 &rsip->out_handle, &rsip->out_token,
1129 rsip->major_status, rsip->minor_status))
1134 cache_put(&rsip->h, sn->rsi_cache);
1138 static int gss_proxy_save_rsc(struct cache_detail *cd,
1139 struct gssp_upcall_data *ud,
1142 struct rsc rsci, *rscp = NULL;
1143 static atomic64_t ctxhctr;
1145 struct gss_api_mech *gm = NULL;
1147 int status = -EINVAL;
1149 memset(&rsci, 0, sizeof(rsci));
1150 /* context handle */
1152 /* the handle needs to be just a unique id,
1153 * use a static counter */
1154 ctxh = atomic64_inc_return(&ctxhctr);
1156 /* make a copy for the caller */
1159 /* make a copy for the rsc cache */
1160 if (dup_to_netobj(&rsci.handle, (char *)handle, sizeof(uint64_t)))
1162 rscp = rsc_lookup(cd, &rsci);
1167 if (!ud->found_creds) {
1168 /* userspace seem buggy, we should always get at least a
1169 * mapping to nobody */
1170 dprintk("RPC: No creds found, marking Negative!\n");
1171 set_bit(CACHE_NEGATIVE, &rsci.h.flags);
1175 rsci.cred = ud->creds;
1176 memset(&ud->creds, 0, sizeof(struct svc_cred));
1178 status = -EOPNOTSUPP;
1179 /* get mech handle from OID */
1180 gm = gss_mech_get_by_OID(&ud->mech_oid);
1183 rsci.cred.cr_gss_mech = gm;
1186 /* mech-specific data: */
1187 status = gss_import_sec_context(ud->out_handle.data,
1190 &expiry, GFP_KERNEL);
1195 rsci.h.expiry_time = expiry;
1196 rscp = rsc_update(cd, &rsci, rscp);
1201 cache_put(&rscp->h, cd);
1207 static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
1208 struct rpc_gss_wire_cred *gc, __be32 *authp)
1210 struct kvec *resv = &rqstp->rq_res.head[0];
1211 struct xdr_netobj cli_handle;
1212 struct gssp_upcall_data ud;
1216 struct net *net = rqstp->rq_xprt->xpt_net;
1217 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1219 memset(&ud, 0, sizeof(ud));
1220 ret = gss_read_proxy_verf(rqstp, gc, authp,
1221 &ud.in_handle, &ud.in_token);
1227 /* Perform synchronous upcall to gss-proxy */
1228 status = gssp_accept_sec_context_upcall(net, &ud);
1232 dprintk("RPC: svcauth_gss: gss major status = %d\n",
1235 switch (ud.major_status) {
1236 case GSS_S_CONTINUE_NEEDED:
1237 cli_handle = ud.out_handle;
1239 case GSS_S_COMPLETE:
1240 status = gss_proxy_save_rsc(sn->rsc_cache, &ud, &handle);
1243 cli_handle.data = (u8 *)&handle;
1244 cli_handle.len = sizeof(handle);
1251 /* Got an answer to the upcall; use it: */
1252 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1253 &cli_handle, &ud.major_status))
1255 if (gss_write_resv(resv, PAGE_SIZE,
1256 &cli_handle, &ud.out_token,
1257 ud.major_status, ud.minor_status))
1262 gssp_free_upcall_data(&ud);
1266 DEFINE_SPINLOCK(use_gssp_lock);
1268 static bool use_gss_proxy(struct net *net)
1270 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1272 if (sn->use_gss_proxy != -1)
1273 return sn->use_gss_proxy;
1274 spin_lock(&use_gssp_lock);
1276 * If you wanted gss-proxy, you should have said so before
1277 * starting to accept requests:
1279 sn->use_gss_proxy = 0;
1280 spin_unlock(&use_gssp_lock);
1284 #ifdef CONFIG_PROC_FS
1286 static int set_gss_proxy(struct net *net, int type)
1288 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1291 WARN_ON_ONCE(type != 0 && type != 1);
1292 spin_lock(&use_gssp_lock);
1293 if (sn->use_gss_proxy == -1 || sn->use_gss_proxy == type)
1294 sn->use_gss_proxy = type;
1297 spin_unlock(&use_gssp_lock);
1298 wake_up(&sn->gssp_wq);
1302 static inline bool gssp_ready(struct sunrpc_net *sn)
1304 switch (sn->use_gss_proxy) {
1310 return sn->gssp_clnt;
1316 static int wait_for_gss_proxy(struct net *net, struct file *file)
1318 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1320 if (file->f_flags & O_NONBLOCK && !gssp_ready(sn))
1322 return wait_event_interruptible(sn->gssp_wq, gssp_ready(sn));
1326 static ssize_t write_gssp(struct file *file, const char __user *buf,
1327 size_t count, loff_t *ppos)
1329 struct net *net = PDE_DATA(file_inode(file));
1334 if (*ppos || count > sizeof(tbuf)-1)
1336 if (copy_from_user(tbuf, buf, count))
1340 res = kstrtoul(tbuf, 0, &i);
1345 res = set_gss_proxy(net, 1);
1348 res = set_gssp_clnt(net);
1354 static ssize_t read_gssp(struct file *file, char __user *buf,
1355 size_t count, loff_t *ppos)
1357 struct net *net = PDE_DATA(file_inode(file));
1358 unsigned long p = *ppos;
1363 ret = wait_for_gss_proxy(net, file);
1367 snprintf(tbuf, sizeof(tbuf), "%d\n", use_gss_proxy(net));
1374 if (copy_to_user(buf, (void *)(tbuf+p), len))
1380 static const struct file_operations use_gss_proxy_ops = {
1381 .open = nonseekable_open,
1382 .write = write_gssp,
1386 static int create_use_gss_proxy_proc_entry(struct net *net)
1388 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1389 struct proc_dir_entry **p = &sn->use_gssp_proc;
1391 sn->use_gss_proxy = -1;
1392 *p = proc_create_data("use-gss-proxy", S_IFREG|S_IRUSR|S_IWUSR,
1394 &use_gss_proxy_ops, net);
1401 static void destroy_use_gss_proxy_proc_entry(struct net *net)
1403 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1405 if (sn->use_gssp_proc) {
1406 remove_proc_entry("use-gss-proxy", sn->proc_net_rpc);
1407 clear_gssp_clnt(sn);
1410 #else /* CONFIG_PROC_FS */
1412 static int create_use_gss_proxy_proc_entry(struct net *net)
1417 static void destroy_use_gss_proxy_proc_entry(struct net *net) {}
1419 #endif /* CONFIG_PROC_FS */
1422 * Accept an rpcsec packet.
1423 * If context establishment, punt to user space
1424 * If data exchange, verify/decrypt
1425 * If context destruction, handle here
1426 * In the context establishment and destruction case we encode
1427 * response here and return SVC_COMPLETE.
1430 svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
1432 struct kvec *argv = &rqstp->rq_arg.head[0];
1433 struct kvec *resv = &rqstp->rq_res.head[0];
1435 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
1436 struct rpc_gss_wire_cred *gc;
1437 struct rsc *rsci = NULL;
1439 __be32 *reject_stat = resv->iov_base + resv->iov_len;
1441 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1443 dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
1446 *authp = rpc_autherr_badcred;
1448 svcdata = kmalloc(sizeof(*svcdata), GFP_KERNEL);
1451 rqstp->rq_auth_data = svcdata;
1452 svcdata->verf_start = NULL;
1453 svcdata->rsci = NULL;
1454 gc = &svcdata->clcred;
1456 /* start of rpc packet is 7 u32's back from here:
1457 * xid direction rpcversion prog vers proc flavour
1459 rpcstart = argv->iov_base;
1463 * version(==1), proc(0,1,2,3), seq, service (1,2,3), handle
1464 * at least 5 u32s, and is preceded by length, so that makes 6.
1467 if (argv->iov_len < 5 * 4)
1469 crlen = svc_getnl(argv);
1470 if (svc_getnl(argv) != RPC_GSS_VERSION)
1472 gc->gc_proc = svc_getnl(argv);
1473 gc->gc_seq = svc_getnl(argv);
1474 gc->gc_svc = svc_getnl(argv);
1475 if (svc_safe_getnetobj(argv, &gc->gc_ctx))
1477 if (crlen != round_up_to_quad(gc->gc_ctx.len) + 5 * 4)
1480 if ((gc->gc_proc != RPC_GSS_PROC_DATA) && (rqstp->rq_proc != 0))
1483 *authp = rpc_autherr_badverf;
1484 switch (gc->gc_proc) {
1485 case RPC_GSS_PROC_INIT:
1486 case RPC_GSS_PROC_CONTINUE_INIT:
1487 if (use_gss_proxy(SVC_NET(rqstp)))
1488 return svcauth_gss_proxy_init(rqstp, gc, authp);
1490 return svcauth_gss_legacy_init(rqstp, gc, authp);
1491 case RPC_GSS_PROC_DATA:
1492 case RPC_GSS_PROC_DESTROY:
1493 /* Look up the context, and check the verifier: */
1494 *authp = rpcsec_gsserr_credproblem;
1495 rsci = gss_svc_searchbyctx(sn->rsc_cache, &gc->gc_ctx);
1498 switch (gss_verify_header(rqstp, rsci, rpcstart, gc, authp)) {
1508 *authp = rpc_autherr_rejectedcred;
1512 /* now act upon the command: */
1513 switch (gc->gc_proc) {
1514 case RPC_GSS_PROC_DESTROY:
1515 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1517 rsci->h.expiry_time = get_seconds();
1518 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
1519 if (resv->iov_len + 4 > PAGE_SIZE)
1521 svc_putnl(resv, RPC_SUCCESS);
1523 case RPC_GSS_PROC_DATA:
1524 *authp = rpcsec_gsserr_ctxproblem;
1525 svcdata->verf_start = resv->iov_base + resv->iov_len;
1526 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1528 rqstp->rq_cred = rsci->cred;
1529 get_group_info(rsci->cred.cr_group_info);
1530 *authp = rpc_autherr_badcred;
1531 switch (gc->gc_svc) {
1532 case RPC_GSS_SVC_NONE:
1534 case RPC_GSS_SVC_INTEGRITY:
1535 /* placeholders for length and seq. number: */
1538 if (unwrap_integ_data(rqstp, &rqstp->rq_arg,
1539 gc->gc_seq, rsci->mechctx))
1542 case RPC_GSS_SVC_PRIVACY:
1543 /* placeholders for length and seq. number: */
1546 if (unwrap_priv_data(rqstp, &rqstp->rq_arg,
1547 gc->gc_seq, rsci->mechctx))
1553 svcdata->rsci = rsci;
1554 cache_get(&rsci->h);
1555 rqstp->rq_cred.cr_flavor = gss_svc_to_pseudoflavor(
1556 rsci->mechctx->mech_type,
1566 /* Restore write pointer to its original value: */
1567 xdr_ressize_check(rqstp, reject_stat);
1577 cache_put(&rsci->h, sn->rsc_cache);
1582 svcauth_gss_prepare_to_wrap(struct xdr_buf *resbuf, struct gss_svc_data *gsd)
1587 p = gsd->verf_start;
1588 gsd->verf_start = NULL;
1590 /* If the reply stat is nonzero, don't wrap: */
1591 if (*(p-1) != rpc_success)
1593 /* Skip the verifier: */
1595 verf_len = ntohl(*p++);
1596 p += XDR_QUADLEN(verf_len);
1597 /* move accept_stat to right place: */
1598 memcpy(p, p + 2, 4);
1599 /* Also don't wrap if the accept stat is nonzero: */
1600 if (*p != rpc_success) {
1601 resbuf->head[0].iov_len -= 2 * 4;
1609 svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
1611 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1612 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1613 struct xdr_buf *resbuf = &rqstp->rq_res;
1614 struct xdr_buf integ_buf;
1615 struct xdr_netobj mic;
1618 int integ_offset, integ_len;
1621 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1624 integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
1625 integ_len = resbuf->len - integ_offset;
1626 BUG_ON(integ_len % 4);
1627 *p++ = htonl(integ_len);
1628 *p++ = htonl(gc->gc_seq);
1629 if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset,
1632 if (resbuf->tail[0].iov_base == NULL) {
1633 if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1635 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1636 + resbuf->head[0].iov_len;
1637 resbuf->tail[0].iov_len = 0;
1638 resv = &resbuf->tail[0];
1640 resv = &resbuf->tail[0];
1642 mic.data = (u8 *)resv->iov_base + resv->iov_len + 4;
1643 if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic))
1645 svc_putnl(resv, mic.len);
1646 memset(mic.data + mic.len, 0,
1647 round_up_to_quad(mic.len) - mic.len);
1648 resv->iov_len += XDR_QUADLEN(mic.len) << 2;
1649 /* not strictly required: */
1650 resbuf->len += XDR_QUADLEN(mic.len) << 2;
1651 BUG_ON(resv->iov_len > PAGE_SIZE);
1659 svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
1661 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1662 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1663 struct xdr_buf *resbuf = &rqstp->rq_res;
1664 struct page **inpages = NULL;
1669 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1673 offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
1674 *p++ = htonl(gc->gc_seq);
1675 inpages = resbuf->pages;
1676 /* XXX: Would be better to write some xdr helper functions for
1677 * nfs{2,3,4}xdr.c that place the data right, instead of copying: */
1680 * If there is currently tail data, make sure there is
1681 * room for the head, tail, and 2 * RPC_MAX_AUTH_SIZE in
1682 * the page, and move the current tail data such that
1683 * there is RPC_MAX_AUTH_SIZE slack space available in
1684 * both the head and tail.
1686 if (resbuf->tail[0].iov_base) {
1687 BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
1689 BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
1690 if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
1691 + 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1693 memmove(resbuf->tail[0].iov_base + RPC_MAX_AUTH_SIZE,
1694 resbuf->tail[0].iov_base,
1695 resbuf->tail[0].iov_len);
1696 resbuf->tail[0].iov_base += RPC_MAX_AUTH_SIZE;
1699 * If there is no current tail data, make sure there is
1700 * room for the head data, and 2 * RPC_MAX_AUTH_SIZE in the
1701 * allotted page, and set up tail information such that there
1702 * is RPC_MAX_AUTH_SIZE slack space available in both the
1705 if (resbuf->tail[0].iov_base == NULL) {
1706 if (resbuf->head[0].iov_len + 2*RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1708 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1709 + resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE;
1710 resbuf->tail[0].iov_len = 0;
1712 if (gss_wrap(gsd->rsci->mechctx, offset, resbuf, inpages))
1714 *len = htonl(resbuf->len - offset);
1715 pad = 3 - ((resbuf->len - offset - 1)&3);
1716 p = (__be32 *)(resbuf->tail[0].iov_base + resbuf->tail[0].iov_len);
1718 resbuf->tail[0].iov_len += pad;
1724 svcauth_gss_release(struct svc_rqst *rqstp)
1726 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1727 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1728 struct xdr_buf *resbuf = &rqstp->rq_res;
1730 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1732 if (gc->gc_proc != RPC_GSS_PROC_DATA)
1734 /* Release can be called twice, but we only wrap once. */
1735 if (gsd->verf_start == NULL)
1737 /* normally not set till svc_send, but we need it here: */
1738 /* XXX: what for? Do we mess it up the moment we call svc_putu32
1740 resbuf->len = total_buf_len(resbuf);
1741 switch (gc->gc_svc) {
1742 case RPC_GSS_SVC_NONE:
1744 case RPC_GSS_SVC_INTEGRITY:
1745 stat = svcauth_gss_wrap_resp_integ(rqstp);
1749 case RPC_GSS_SVC_PRIVACY:
1750 stat = svcauth_gss_wrap_resp_priv(rqstp);
1755 * For any other gc_svc value, svcauth_gss_accept() already set
1756 * the auth_error appropriately; just fall through:
1763 if (rqstp->rq_client)
1764 auth_domain_put(rqstp->rq_client);
1765 rqstp->rq_client = NULL;
1766 if (rqstp->rq_gssclient)
1767 auth_domain_put(rqstp->rq_gssclient);
1768 rqstp->rq_gssclient = NULL;
1769 if (rqstp->rq_cred.cr_group_info)
1770 put_group_info(rqstp->rq_cred.cr_group_info);
1771 rqstp->rq_cred.cr_group_info = NULL;
1773 cache_put(&gsd->rsci->h, sn->rsc_cache);
1780 svcauth_gss_domain_release(struct auth_domain *dom)
1782 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
1788 static struct auth_ops svcauthops_gss = {
1789 .name = "rpcsec_gss",
1790 .owner = THIS_MODULE,
1791 .flavour = RPC_AUTH_GSS,
1792 .accept = svcauth_gss_accept,
1793 .release = svcauth_gss_release,
1794 .domain_release = svcauth_gss_domain_release,
1795 .set_client = svcauth_gss_set_client,
1798 static int rsi_cache_create_net(struct net *net)
1800 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1801 struct cache_detail *cd;
1804 cd = cache_create_net(&rsi_cache_template, net);
1807 err = cache_register_net(cd, net);
1809 cache_destroy_net(cd, net);
1816 static void rsi_cache_destroy_net(struct net *net)
1818 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1819 struct cache_detail *cd = sn->rsi_cache;
1821 sn->rsi_cache = NULL;
1823 cache_unregister_net(cd, net);
1824 cache_destroy_net(cd, net);
1827 static int rsc_cache_create_net(struct net *net)
1829 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1830 struct cache_detail *cd;
1833 cd = cache_create_net(&rsc_cache_template, net);
1836 err = cache_register_net(cd, net);
1838 cache_destroy_net(cd, net);
1845 static void rsc_cache_destroy_net(struct net *net)
1847 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1848 struct cache_detail *cd = sn->rsc_cache;
1850 sn->rsc_cache = NULL;
1852 cache_unregister_net(cd, net);
1853 cache_destroy_net(cd, net);
1857 gss_svc_init_net(struct net *net)
1861 rv = rsc_cache_create_net(net);
1864 rv = rsi_cache_create_net(net);
1867 rv = create_use_gss_proxy_proc_entry(net);
1872 destroy_use_gss_proxy_proc_entry(net);
1874 rsc_cache_destroy_net(net);
1879 gss_svc_shutdown_net(struct net *net)
1881 destroy_use_gss_proxy_proc_entry(net);
1882 rsi_cache_destroy_net(net);
1883 rsc_cache_destroy_net(net);
1889 return svc_auth_register(RPC_AUTH_GSS, &svcauthops_gss);
1893 gss_svc_shutdown(void)
1895 svc_auth_unregister(RPC_AUTH_GSS);