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 new->cred.cr_group_info = NULL;
381 new->cred.cr_principal = NULL;
385 update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
387 struct rsc *new = container_of(cnew, struct rsc, h);
388 struct rsc *tmp = container_of(ctmp, struct rsc, h);
390 new->mechctx = tmp->mechctx;
392 memset(&new->seqdata, 0, sizeof(new->seqdata));
393 spin_lock_init(&new->seqdata.sd_lock);
394 new->cred = tmp->cred;
395 tmp->cred.cr_group_info = NULL;
396 new->cred.cr_principal = tmp->cred.cr_principal;
397 tmp->cred.cr_principal = NULL;
400 static struct cache_head *
403 struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
410 static int rsc_parse(struct cache_detail *cd,
411 char *mesg, int mlen)
413 /* contexthandle expiry [ uid gid N <n gids> mechname ...mechdata... ] */
417 struct rsc rsci, *rscp = NULL;
419 int status = -EINVAL;
420 struct gss_api_mech *gm = NULL;
422 memset(&rsci, 0, sizeof(rsci));
424 len = qword_get(&mesg, buf, mlen);
425 if (len < 0) goto out;
427 if (dup_to_netobj(&rsci.handle, buf, len))
432 expiry = get_expiry(&mesg);
437 rscp = rsc_lookup(cd, &rsci);
441 /* uid, or NEGATIVE */
442 rv = get_int(&mesg, &id);
446 set_bit(CACHE_NEGATIVE, &rsci.h.flags);
451 * NOTE: we skip uid_valid()/gid_valid() checks here:
452 * instead, * -1 id's are later mapped to the
453 * (export-specific) anonymous id by nfsd_setuser.
455 * (But supplementary gid's get no such special
456 * treatment so are checked for validity here.)
459 rsci.cred.cr_uid = make_kuid(&init_user_ns, id);
462 if (get_int(&mesg, &id))
464 rsci.cred.cr_gid = make_kgid(&init_user_ns, id);
466 /* number of additional gid's */
467 if (get_int(&mesg, &N))
470 rsci.cred.cr_group_info = groups_alloc(N);
471 if (rsci.cred.cr_group_info == NULL)
476 for (i=0; i<N; i++) {
478 if (get_int(&mesg, &id))
480 kgid = make_kgid(&init_user_ns, id);
481 if (!gid_valid(kgid))
483 GROUP_AT(rsci.cred.cr_group_info, i) = kgid;
487 len = qword_get(&mesg, buf, mlen);
490 gm = gss_mech_get_by_name(buf);
491 status = -EOPNOTSUPP;
496 /* mech-specific data: */
497 len = qword_get(&mesg, buf, mlen);
500 status = gss_import_sec_context(buf, len, gm, &rsci.mechctx,
505 /* get client name */
506 len = qword_get(&mesg, buf, mlen);
508 rsci.cred.cr_principal = kstrdup(buf, GFP_KERNEL);
509 if (!rsci.cred.cr_principal) {
516 rsci.h.expiry_time = expiry;
517 rscp = rsc_update(cd, &rsci, rscp);
523 cache_put(&rscp->h, cd);
529 static struct cache_detail rsc_cache_template = {
530 .owner = THIS_MODULE,
531 .hash_size = RSC_HASHMAX,
532 .name = "auth.rpcsec.context",
533 .cache_put = rsc_put,
534 .cache_parse = rsc_parse,
537 .update = update_rsc,
541 static struct rsc *rsc_lookup(struct cache_detail *cd, struct rsc *item)
543 struct cache_head *ch;
544 int hash = rsc_hash(item);
546 ch = sunrpc_cache_lookup(cd, &item->h, hash);
548 return container_of(ch, struct rsc, h);
553 static struct rsc *rsc_update(struct cache_detail *cd, struct rsc *new, struct rsc *old)
555 struct cache_head *ch;
556 int hash = rsc_hash(new);
558 ch = sunrpc_cache_update(cd, &new->h,
561 return container_of(ch, struct rsc, h);
568 gss_svc_searchbyctx(struct cache_detail *cd, struct xdr_netobj *handle)
573 memset(&rsci, 0, sizeof(rsci));
574 if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
576 found = rsc_lookup(cd, &rsci);
580 if (cache_check(cd, &found->h, NULL))
585 /* Implements sequence number algorithm as specified in RFC 2203. */
587 gss_check_seq_num(struct rsc *rsci, int seq_num)
589 struct gss_svc_seq_data *sd = &rsci->seqdata;
591 spin_lock(&sd->sd_lock);
592 if (seq_num > sd->sd_max) {
593 if (seq_num >= sd->sd_max + GSS_SEQ_WIN) {
594 memset(sd->sd_win,0,sizeof(sd->sd_win));
595 sd->sd_max = seq_num;
596 } else while (sd->sd_max < seq_num) {
598 __clear_bit(sd->sd_max % GSS_SEQ_WIN, sd->sd_win);
600 __set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win);
602 } else if (seq_num <= sd->sd_max - GSS_SEQ_WIN) {
605 /* sd_max - GSS_SEQ_WIN < seq_num <= sd_max */
606 if (__test_and_set_bit(seq_num % GSS_SEQ_WIN, sd->sd_win))
609 spin_unlock(&sd->sd_lock);
612 spin_unlock(&sd->sd_lock);
616 static inline u32 round_up_to_quad(u32 i)
618 return (i + 3 ) & ~3;
622 svc_safe_getnetobj(struct kvec *argv, struct xdr_netobj *o)
626 if (argv->iov_len < 4)
628 o->len = svc_getnl(argv);
629 l = round_up_to_quad(o->len);
630 if (argv->iov_len < l)
632 o->data = argv->iov_base;
639 svc_safe_putnetobj(struct kvec *resv, struct xdr_netobj *o)
643 if (resv->iov_len + 4 > PAGE_SIZE)
645 svc_putnl(resv, o->len);
646 p = resv->iov_base + resv->iov_len;
647 resv->iov_len += round_up_to_quad(o->len);
648 if (resv->iov_len > PAGE_SIZE)
650 memcpy(p, o->data, o->len);
651 memset(p + o->len, 0, round_up_to_quad(o->len) - o->len);
656 * Verify the checksum on the header and return SVC_OK on success.
657 * Otherwise, return SVC_DROP (in the case of a bad sequence number)
658 * or return SVC_DENIED and indicate error in authp.
661 gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci,
662 __be32 *rpcstart, struct rpc_gss_wire_cred *gc, __be32 *authp)
664 struct gss_ctx *ctx_id = rsci->mechctx;
665 struct xdr_buf rpchdr;
666 struct xdr_netobj checksum;
668 struct kvec *argv = &rqstp->rq_arg.head[0];
671 /* data to compute the checksum over: */
672 iov.iov_base = rpcstart;
673 iov.iov_len = (u8 *)argv->iov_base - (u8 *)rpcstart;
674 xdr_buf_from_iov(&iov, &rpchdr);
676 *authp = rpc_autherr_badverf;
677 if (argv->iov_len < 4)
679 flavor = svc_getnl(argv);
680 if (flavor != RPC_AUTH_GSS)
682 if (svc_safe_getnetobj(argv, &checksum))
685 if (rqstp->rq_deferred) /* skip verification of revisited request */
687 if (gss_verify_mic(ctx_id, &rpchdr, &checksum) != GSS_S_COMPLETE) {
688 *authp = rpcsec_gsserr_credproblem;
692 if (gc->gc_seq > MAXSEQ) {
693 dprintk("RPC: svcauth_gss: discarding request with "
694 "large sequence number %d\n", gc->gc_seq);
695 *authp = rpcsec_gsserr_ctxproblem;
698 if (!gss_check_seq_num(rsci, gc->gc_seq)) {
699 dprintk("RPC: svcauth_gss: discarding request with "
700 "old sequence number %d\n", gc->gc_seq);
707 gss_write_null_verf(struct svc_rqst *rqstp)
711 svc_putnl(rqstp->rq_res.head, RPC_AUTH_NULL);
712 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
713 /* don't really need to check if head->iov_len > PAGE_SIZE ... */
715 if (!xdr_ressize_check(rqstp, p))
721 gss_write_verf(struct svc_rqst *rqstp, struct gss_ctx *ctx_id, u32 seq)
725 struct xdr_buf verf_data;
726 struct xdr_netobj mic;
730 svc_putnl(rqstp->rq_res.head, RPC_AUTH_GSS);
731 xdr_seq = htonl(seq);
733 iov.iov_base = &xdr_seq;
734 iov.iov_len = sizeof(xdr_seq);
735 xdr_buf_from_iov(&iov, &verf_data);
736 p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len;
737 mic.data = (u8 *)(p + 1);
738 maj_stat = gss_get_mic(ctx_id, &verf_data, &mic);
739 if (maj_stat != GSS_S_COMPLETE)
741 *p++ = htonl(mic.len);
742 memset((u8 *)p + mic.len, 0, round_up_to_quad(mic.len) - mic.len);
743 p += XDR_QUADLEN(mic.len);
744 if (!xdr_ressize_check(rqstp, p))
750 struct auth_domain h;
754 static struct auth_domain *
755 find_gss_auth_domain(struct gss_ctx *ctx, u32 svc)
759 name = gss_service_to_auth_domain_name(ctx->mech_type, svc);
762 return auth_domain_find(name);
765 static struct auth_ops svcauthops_gss;
767 u32 svcauth_gss_flavor(struct auth_domain *dom)
769 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
771 return gd->pseudoflavor;
774 EXPORT_SYMBOL_GPL(svcauth_gss_flavor);
777 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
779 struct gss_domain *new;
780 struct auth_domain *test;
783 new = kmalloc(sizeof(*new), GFP_KERNEL);
786 kref_init(&new->h.ref);
787 new->h.name = kstrdup(name, GFP_KERNEL);
790 new->h.flavour = &svcauthops_gss;
791 new->pseudoflavor = pseudoflavor;
794 test = auth_domain_lookup(name, &new->h);
795 if (test != &new->h) { /* Duplicate registration */
796 auth_domain_put(test);
808 EXPORT_SYMBOL_GPL(svcauth_gss_register_pseudoflavor);
811 read_u32_from_xdr_buf(struct xdr_buf *buf, int base, u32 *obj)
816 status = read_bytes_from_xdr_buf(buf, base, &raw, sizeof(*obj));
823 /* It would be nice if this bit of code could be shared with the client.
825 * The client shouldn't malloc(), would have to pass in own memory.
826 * The server uses base of head iovec as read pointer, while the
827 * client uses separate pointer. */
829 unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
832 u32 integ_len, maj_stat;
833 struct xdr_netobj mic;
834 struct xdr_buf integ_buf;
836 /* Did we already verify the signature on the original pass through? */
837 if (rqstp->rq_deferred)
840 integ_len = svc_getnl(&buf->head[0]);
843 if (integ_len > buf->len)
845 if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len))
847 /* copy out mic... */
848 if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
850 if (mic.len > RPC_MAX_AUTH_SIZE)
852 mic.data = kmalloc(mic.len, GFP_KERNEL);
855 if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
857 maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
858 if (maj_stat != GSS_S_COMPLETE)
860 if (svc_getnl(&buf->head[0]) != seq)
862 /* trim off the mic at the end before returning */
863 xdr_buf_trim(buf, mic.len + 4);
871 total_buf_len(struct xdr_buf *buf)
873 return buf->head[0].iov_len + buf->page_len + buf->tail[0].iov_len;
877 fix_priv_head(struct xdr_buf *buf, int pad)
879 if (buf->page_len == 0) {
880 /* We need to adjust head and buf->len in tandem in this
881 * case to make svc_defer() work--it finds the original
882 * buffer start using buf->len - buf->head[0].iov_len. */
883 buf->head[0].iov_len -= pad;
888 unwrap_priv_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
890 u32 priv_len, maj_stat;
891 int pad, saved_len, remaining_len, offset;
893 rqstp->rq_splice_ok = 0;
895 priv_len = svc_getnl(&buf->head[0]);
896 if (rqstp->rq_deferred) {
897 /* Already decrypted last time through! The sequence number
898 * check at out_seq is unnecessary but harmless: */
901 /* buf->len is the number of bytes from the original start of the
902 * request to the end, where head[0].iov_len is just the bytes
903 * not yet read from the head, so these two values are different: */
904 remaining_len = total_buf_len(buf);
905 if (priv_len > remaining_len)
907 pad = remaining_len - priv_len;
909 fix_priv_head(buf, pad);
911 /* Maybe it would be better to give gss_unwrap a length parameter: */
912 saved_len = buf->len;
914 maj_stat = gss_unwrap(ctx, 0, buf);
915 pad = priv_len - buf->len;
916 buf->len = saved_len;
918 /* The upper layers assume the buffer is aligned on 4-byte boundaries.
919 * In the krb5p case, at least, the data ends up offset, so we need to
921 /* XXX: This is very inefficient. It would be better to either do
922 * this while we encrypt, or maybe in the receive code, if we can peak
923 * ahead and work out the service and mechanism there. */
924 offset = buf->head[0].iov_len % 4;
926 buf->buflen = RPCSVC_MAXPAYLOAD;
927 xdr_shift_buf(buf, offset);
928 fix_priv_head(buf, pad);
930 if (maj_stat != GSS_S_COMPLETE)
933 if (svc_getnl(&buf->head[0]) != seq)
938 struct gss_svc_data {
939 /* decoded gss client cred: */
940 struct rpc_gss_wire_cred clcred;
941 /* save a pointer to the beginning of the encoded verifier,
942 * for use in encryption/checksumming in svcauth_gss_release: */
948 svcauth_gss_set_client(struct svc_rqst *rqstp)
950 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
951 struct rsc *rsci = svcdata->rsci;
952 struct rpc_gss_wire_cred *gc = &svcdata->clcred;
956 * A gss export can be specified either by:
957 * export *(sec=krb5,rw)
959 * export gss/krb5(rw)
960 * The latter is deprecated; but for backwards compatibility reasons
961 * the nfsd code will still fall back on trying it if the former
962 * doesn't work; so we try to make both available to nfsd, below.
964 rqstp->rq_gssclient = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
965 if (rqstp->rq_gssclient == NULL)
967 stat = svcauth_unix_set_client(rqstp);
968 if (stat == SVC_DROP || stat == SVC_CLOSE)
974 gss_write_init_verf(struct cache_detail *cd, struct svc_rqst *rqstp,
975 struct xdr_netobj *out_handle, int *major_status)
980 if (*major_status != GSS_S_COMPLETE)
981 return gss_write_null_verf(rqstp);
982 rsci = gss_svc_searchbyctx(cd, out_handle);
984 *major_status = GSS_S_NO_CONTEXT;
985 return gss_write_null_verf(rqstp);
987 rc = gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN);
988 cache_put(&rsci->h, cd);
993 gss_read_common_verf(struct rpc_gss_wire_cred *gc,
994 struct kvec *argv, __be32 *authp,
995 struct xdr_netobj *in_handle)
997 /* Read the verifier; should be NULL: */
998 *authp = rpc_autherr_badverf;
999 if (argv->iov_len < 2 * 4)
1001 if (svc_getnl(argv) != RPC_AUTH_NULL)
1003 if (svc_getnl(argv) != 0)
1005 /* Martial context handle and token for upcall: */
1006 *authp = rpc_autherr_badcred;
1007 if (gc->gc_proc == RPC_GSS_PROC_INIT && gc->gc_ctx.len != 0)
1009 if (dup_netobj(in_handle, &gc->gc_ctx))
1011 *authp = rpc_autherr_badverf;
1017 gss_read_verf(struct rpc_gss_wire_cred *gc,
1018 struct kvec *argv, __be32 *authp,
1019 struct xdr_netobj *in_handle,
1020 struct xdr_netobj *in_token)
1022 struct xdr_netobj tmpobj;
1025 res = gss_read_common_verf(gc, argv, authp, in_handle);
1029 if (svc_safe_getnetobj(argv, &tmpobj)) {
1030 kfree(in_handle->data);
1033 if (dup_netobj(in_token, &tmpobj)) {
1034 kfree(in_handle->data);
1041 /* Ok this is really heavily depending on a set of semantics in
1042 * how rqstp is set up by svc_recv and pages laid down by the
1043 * server when reading a request. We are basically guaranteed that
1044 * the token lays all down linearly across a set of pages, starting
1045 * at iov_base in rq_arg.head[0] which happens to be the first of a
1046 * set of pages stored in rq_pages[].
1047 * rq_arg.head[0].iov_base will provide us the page_base to pass
1051 gss_read_proxy_verf(struct svc_rqst *rqstp,
1052 struct rpc_gss_wire_cred *gc, __be32 *authp,
1053 struct xdr_netobj *in_handle,
1054 struct gssp_in_token *in_token)
1056 struct kvec *argv = &rqstp->rq_arg.head[0];
1060 res = gss_read_common_verf(gc, argv, authp, in_handle);
1064 inlen = svc_getnl(argv);
1065 if (inlen > (argv->iov_len + rqstp->rq_arg.page_len))
1068 in_token->pages = rqstp->rq_pages;
1069 in_token->page_base = (ulong)argv->iov_base & ~PAGE_MASK;
1070 in_token->page_len = inlen;
1076 gss_write_resv(struct kvec *resv, size_t size_limit,
1077 struct xdr_netobj *out_handle, struct xdr_netobj *out_token,
1078 int major_status, int minor_status)
1080 if (resv->iov_len + 4 > size_limit)
1082 svc_putnl(resv, RPC_SUCCESS);
1083 if (svc_safe_putnetobj(resv, out_handle))
1085 if (resv->iov_len + 3 * 4 > size_limit)
1087 svc_putnl(resv, major_status);
1088 svc_putnl(resv, minor_status);
1089 svc_putnl(resv, GSS_SEQ_WIN);
1090 if (svc_safe_putnetobj(resv, out_token))
1096 * Having read the cred already and found we're in the context
1097 * initiation case, read the verifier and initiate (or check the results
1098 * of) upcalls to userspace for help with context initiation. If
1099 * the upcall results are available, write the verifier and result.
1100 * Otherwise, drop the request pending an answer to the upcall.
1102 static int svcauth_gss_legacy_init(struct svc_rqst *rqstp,
1103 struct rpc_gss_wire_cred *gc, __be32 *authp)
1105 struct kvec *argv = &rqstp->rq_arg.head[0];
1106 struct kvec *resv = &rqstp->rq_res.head[0];
1107 struct rsi *rsip, rsikey;
1109 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1111 memset(&rsikey, 0, sizeof(rsikey));
1112 ret = gss_read_verf(gc, argv, authp,
1113 &rsikey.in_handle, &rsikey.in_token);
1117 /* Perform upcall, or find upcall result: */
1118 rsip = rsi_lookup(sn->rsi_cache, &rsikey);
1122 if (cache_check(sn->rsi_cache, &rsip->h, &rqstp->rq_chandle) < 0)
1123 /* No upcall result: */
1127 /* Got an answer to the upcall; use it: */
1128 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1129 &rsip->out_handle, &rsip->major_status))
1131 if (gss_write_resv(resv, PAGE_SIZE,
1132 &rsip->out_handle, &rsip->out_token,
1133 rsip->major_status, rsip->minor_status))
1138 cache_put(&rsip->h, sn->rsi_cache);
1142 static int gss_proxy_save_rsc(struct cache_detail *cd,
1143 struct gssp_upcall_data *ud,
1146 struct rsc rsci, *rscp = NULL;
1147 static atomic64_t ctxhctr;
1149 struct gss_api_mech *gm = NULL;
1151 int status = -EINVAL;
1153 memset(&rsci, 0, sizeof(rsci));
1154 /* context handle */
1156 /* the handle needs to be just a unique id,
1157 * use a static counter */
1158 ctxh = atomic64_inc_return(&ctxhctr);
1160 /* make a copy for the caller */
1163 /* make a copy for the rsc cache */
1164 if (dup_to_netobj(&rsci.handle, (char *)handle, sizeof(uint64_t)))
1166 rscp = rsc_lookup(cd, &rsci);
1171 if (!ud->found_creds) {
1172 /* userspace seem buggy, we should always get at least a
1173 * mapping to nobody */
1174 dprintk("RPC: No creds found, marking Negative!\n");
1175 set_bit(CACHE_NEGATIVE, &rsci.h.flags);
1179 rsci.cred = ud->creds;
1180 memset(&ud->creds, 0, sizeof(struct svc_cred));
1182 status = -EOPNOTSUPP;
1183 /* get mech handle from OID */
1184 gm = gss_mech_get_by_OID(&ud->mech_oid);
1189 /* mech-specific data: */
1190 status = gss_import_sec_context(ud->out_handle.data,
1193 &expiry, GFP_KERNEL);
1198 rsci.h.expiry_time = expiry;
1199 rscp = rsc_update(cd, &rsci, rscp);
1205 cache_put(&rscp->h, cd);
1211 static int svcauth_gss_proxy_init(struct svc_rqst *rqstp,
1212 struct rpc_gss_wire_cred *gc, __be32 *authp)
1214 struct kvec *resv = &rqstp->rq_res.head[0];
1215 struct xdr_netobj cli_handle;
1216 struct gssp_upcall_data ud;
1220 struct net *net = rqstp->rq_xprt->xpt_net;
1221 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1223 memset(&ud, 0, sizeof(ud));
1224 ret = gss_read_proxy_verf(rqstp, gc, authp,
1225 &ud.in_handle, &ud.in_token);
1231 /* Perform synchronous upcall to gss-proxy */
1232 status = gssp_accept_sec_context_upcall(net, &ud);
1236 dprintk("RPC: svcauth_gss: gss major status = %d\n",
1239 switch (ud.major_status) {
1240 case GSS_S_CONTINUE_NEEDED:
1241 cli_handle = ud.out_handle;
1243 case GSS_S_COMPLETE:
1244 status = gss_proxy_save_rsc(sn->rsc_cache, &ud, &handle);
1247 cli_handle.data = (u8 *)&handle;
1248 cli_handle.len = sizeof(handle);
1255 /* Got an answer to the upcall; use it: */
1256 if (gss_write_init_verf(sn->rsc_cache, rqstp,
1257 &cli_handle, &ud.major_status))
1259 if (gss_write_resv(resv, PAGE_SIZE,
1260 &cli_handle, &ud.out_token,
1261 ud.major_status, ud.minor_status))
1266 gssp_free_upcall_data(&ud);
1270 DEFINE_SPINLOCK(use_gssp_lock);
1272 static bool use_gss_proxy(struct net *net)
1274 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1276 if (sn->use_gss_proxy != -1)
1277 return sn->use_gss_proxy;
1278 spin_lock(&use_gssp_lock);
1280 * If you wanted gss-proxy, you should have said so before
1281 * starting to accept requests:
1283 sn->use_gss_proxy = 0;
1284 spin_unlock(&use_gssp_lock);
1288 #ifdef CONFIG_PROC_FS
1290 static bool set_gss_proxy(struct net *net, int type)
1292 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1295 WARN_ON_ONCE(type != 0 && type != 1);
1296 spin_lock(&use_gssp_lock);
1297 if (sn->use_gss_proxy == -1 || sn->use_gss_proxy == type)
1298 sn->use_gss_proxy = type;
1301 spin_unlock(&use_gssp_lock);
1302 wake_up(&sn->gssp_wq);
1306 static inline bool gssp_ready(struct sunrpc_net *sn)
1308 switch (sn->use_gss_proxy) {
1314 return sn->gssp_clnt;
1320 static int wait_for_gss_proxy(struct net *net)
1322 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1324 return wait_event_interruptible(sn->gssp_wq, gssp_ready(sn));
1328 static ssize_t write_gssp(struct file *file, const char __user *buf,
1329 size_t count, loff_t *ppos)
1331 struct net *net = PDE_DATA(file->f_path.dentry->d_inode);
1336 if (*ppos || count > sizeof(tbuf)-1)
1338 if (copy_from_user(tbuf, buf, count))
1342 res = kstrtoul(tbuf, 0, &i);
1347 res = set_gss_proxy(net, 1);
1350 res = set_gssp_clnt(net);
1356 static ssize_t read_gssp(struct file *file, char __user *buf,
1357 size_t count, loff_t *ppos)
1359 struct net *net = PDE_DATA(file->f_path.dentry->d_inode);
1360 unsigned long p = *ppos;
1365 ret = wait_for_gss_proxy(net);
1369 snprintf(tbuf, sizeof(tbuf), "%d\n", use_gss_proxy(net));
1376 if (copy_to_user(buf, (void *)(tbuf+p), len))
1382 static const struct file_operations use_gss_proxy_ops = {
1383 .open = nonseekable_open,
1384 .write = write_gssp,
1388 static int create_use_gss_proxy_proc_entry(struct net *net)
1390 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1391 struct proc_dir_entry **p = &sn->use_gssp_proc;
1393 sn->use_gss_proxy = -1;
1394 *p = proc_create_data("use-gss-proxy", S_IFREG|S_IRUSR|S_IWUSR,
1396 &use_gss_proxy_ops, net);
1403 static void destroy_use_gss_proxy_proc_entry(struct net *net)
1405 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1407 if (sn->use_gssp_proc) {
1408 remove_proc_entry("use-gss-proxy", sn->proc_net_rpc);
1409 clear_gssp_clnt(sn);
1412 #else /* CONFIG_PROC_FS */
1414 static int create_use_gss_proxy_proc_entry(struct net *net)
1419 static void destroy_use_gss_proxy_proc_entry(struct net *net) {}
1421 #endif /* CONFIG_PROC_FS */
1424 * Accept an rpcsec packet.
1425 * If context establishment, punt to user space
1426 * If data exchange, verify/decrypt
1427 * If context destruction, handle here
1428 * In the context establishment and destruction case we encode
1429 * response here and return SVC_COMPLETE.
1432 svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
1434 struct kvec *argv = &rqstp->rq_arg.head[0];
1435 struct kvec *resv = &rqstp->rq_res.head[0];
1437 struct gss_svc_data *svcdata = rqstp->rq_auth_data;
1438 struct rpc_gss_wire_cred *gc;
1439 struct rsc *rsci = NULL;
1441 __be32 *reject_stat = resv->iov_base + resv->iov_len;
1443 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1445 dprintk("RPC: svcauth_gss: argv->iov_len = %zd\n",
1448 *authp = rpc_autherr_badcred;
1450 svcdata = kmalloc(sizeof(*svcdata), GFP_KERNEL);
1453 rqstp->rq_auth_data = svcdata;
1454 svcdata->verf_start = NULL;
1455 svcdata->rsci = NULL;
1456 gc = &svcdata->clcred;
1458 /* start of rpc packet is 7 u32's back from here:
1459 * xid direction rpcversion prog vers proc flavour
1461 rpcstart = argv->iov_base;
1465 * version(==1), proc(0,1,2,3), seq, service (1,2,3), handle
1466 * at least 5 u32s, and is preceded by length, so that makes 6.
1469 if (argv->iov_len < 5 * 4)
1471 crlen = svc_getnl(argv);
1472 if (svc_getnl(argv) != RPC_GSS_VERSION)
1474 gc->gc_proc = svc_getnl(argv);
1475 gc->gc_seq = svc_getnl(argv);
1476 gc->gc_svc = svc_getnl(argv);
1477 if (svc_safe_getnetobj(argv, &gc->gc_ctx))
1479 if (crlen != round_up_to_quad(gc->gc_ctx.len) + 5 * 4)
1482 if ((gc->gc_proc != RPC_GSS_PROC_DATA) && (rqstp->rq_proc != 0))
1485 *authp = rpc_autherr_badverf;
1486 switch (gc->gc_proc) {
1487 case RPC_GSS_PROC_INIT:
1488 case RPC_GSS_PROC_CONTINUE_INIT:
1489 if (use_gss_proxy(SVC_NET(rqstp)))
1490 return svcauth_gss_proxy_init(rqstp, gc, authp);
1492 return svcauth_gss_legacy_init(rqstp, gc, authp);
1493 case RPC_GSS_PROC_DATA:
1494 case RPC_GSS_PROC_DESTROY:
1495 /* Look up the context, and check the verifier: */
1496 *authp = rpcsec_gsserr_credproblem;
1497 rsci = gss_svc_searchbyctx(sn->rsc_cache, &gc->gc_ctx);
1500 switch (gss_verify_header(rqstp, rsci, rpcstart, gc, authp)) {
1510 *authp = rpc_autherr_rejectedcred;
1514 /* now act upon the command: */
1515 switch (gc->gc_proc) {
1516 case RPC_GSS_PROC_DESTROY:
1517 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1519 rsci->h.expiry_time = get_seconds();
1520 set_bit(CACHE_NEGATIVE, &rsci->h.flags);
1521 if (resv->iov_len + 4 > PAGE_SIZE)
1523 svc_putnl(resv, RPC_SUCCESS);
1525 case RPC_GSS_PROC_DATA:
1526 *authp = rpcsec_gsserr_ctxproblem;
1527 svcdata->verf_start = resv->iov_base + resv->iov_len;
1528 if (gss_write_verf(rqstp, rsci->mechctx, gc->gc_seq))
1530 rqstp->rq_cred = rsci->cred;
1531 get_group_info(rsci->cred.cr_group_info);
1532 *authp = rpc_autherr_badcred;
1533 switch (gc->gc_svc) {
1534 case RPC_GSS_SVC_NONE:
1536 case RPC_GSS_SVC_INTEGRITY:
1537 /* placeholders for length and seq. number: */
1540 if (unwrap_integ_data(rqstp, &rqstp->rq_arg,
1541 gc->gc_seq, rsci->mechctx))
1544 case RPC_GSS_SVC_PRIVACY:
1545 /* placeholders for length and seq. number: */
1548 if (unwrap_priv_data(rqstp, &rqstp->rq_arg,
1549 gc->gc_seq, rsci->mechctx))
1555 svcdata->rsci = rsci;
1556 cache_get(&rsci->h);
1557 rqstp->rq_cred.cr_flavor = gss_svc_to_pseudoflavor(
1558 rsci->mechctx->mech_type,
1568 /* Restore write pointer to its original value: */
1569 xdr_ressize_check(rqstp, reject_stat);
1579 cache_put(&rsci->h, sn->rsc_cache);
1584 svcauth_gss_prepare_to_wrap(struct xdr_buf *resbuf, struct gss_svc_data *gsd)
1589 p = gsd->verf_start;
1590 gsd->verf_start = NULL;
1592 /* If the reply stat is nonzero, don't wrap: */
1593 if (*(p-1) != rpc_success)
1595 /* Skip the verifier: */
1597 verf_len = ntohl(*p++);
1598 p += XDR_QUADLEN(verf_len);
1599 /* move accept_stat to right place: */
1600 memcpy(p, p + 2, 4);
1601 /* Also don't wrap if the accept stat is nonzero: */
1602 if (*p != rpc_success) {
1603 resbuf->head[0].iov_len -= 2 * 4;
1611 svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
1613 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1614 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1615 struct xdr_buf *resbuf = &rqstp->rq_res;
1616 struct xdr_buf integ_buf;
1617 struct xdr_netobj mic;
1620 int integ_offset, integ_len;
1623 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1626 integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
1627 integ_len = resbuf->len - integ_offset;
1628 BUG_ON(integ_len % 4);
1629 *p++ = htonl(integ_len);
1630 *p++ = htonl(gc->gc_seq);
1631 if (xdr_buf_subsegment(resbuf, &integ_buf, integ_offset,
1634 if (resbuf->tail[0].iov_base == NULL) {
1635 if (resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1637 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1638 + resbuf->head[0].iov_len;
1639 resbuf->tail[0].iov_len = 0;
1640 resv = &resbuf->tail[0];
1642 resv = &resbuf->tail[0];
1644 mic.data = (u8 *)resv->iov_base + resv->iov_len + 4;
1645 if (gss_get_mic(gsd->rsci->mechctx, &integ_buf, &mic))
1647 svc_putnl(resv, mic.len);
1648 memset(mic.data + mic.len, 0,
1649 round_up_to_quad(mic.len) - mic.len);
1650 resv->iov_len += XDR_QUADLEN(mic.len) << 2;
1651 /* not strictly required: */
1652 resbuf->len += XDR_QUADLEN(mic.len) << 2;
1653 BUG_ON(resv->iov_len > PAGE_SIZE);
1661 svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
1663 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1664 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1665 struct xdr_buf *resbuf = &rqstp->rq_res;
1666 struct page **inpages = NULL;
1671 p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
1675 offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
1676 *p++ = htonl(gc->gc_seq);
1677 inpages = resbuf->pages;
1678 /* XXX: Would be better to write some xdr helper functions for
1679 * nfs{2,3,4}xdr.c that place the data right, instead of copying: */
1682 * If there is currently tail data, make sure there is
1683 * room for the head, tail, and 2 * RPC_MAX_AUTH_SIZE in
1684 * the page, and move the current tail data such that
1685 * there is RPC_MAX_AUTH_SIZE slack space available in
1686 * both the head and tail.
1688 if (resbuf->tail[0].iov_base) {
1689 BUG_ON(resbuf->tail[0].iov_base >= resbuf->head[0].iov_base
1691 BUG_ON(resbuf->tail[0].iov_base < resbuf->head[0].iov_base);
1692 if (resbuf->tail[0].iov_len + resbuf->head[0].iov_len
1693 + 2 * RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1695 memmove(resbuf->tail[0].iov_base + RPC_MAX_AUTH_SIZE,
1696 resbuf->tail[0].iov_base,
1697 resbuf->tail[0].iov_len);
1698 resbuf->tail[0].iov_base += RPC_MAX_AUTH_SIZE;
1701 * If there is no current tail data, make sure there is
1702 * room for the head data, and 2 * RPC_MAX_AUTH_SIZE in the
1703 * allotted page, and set up tail information such that there
1704 * is RPC_MAX_AUTH_SIZE slack space available in both the
1707 if (resbuf->tail[0].iov_base == NULL) {
1708 if (resbuf->head[0].iov_len + 2*RPC_MAX_AUTH_SIZE > PAGE_SIZE)
1710 resbuf->tail[0].iov_base = resbuf->head[0].iov_base
1711 + resbuf->head[0].iov_len + RPC_MAX_AUTH_SIZE;
1712 resbuf->tail[0].iov_len = 0;
1714 if (gss_wrap(gsd->rsci->mechctx, offset, resbuf, inpages))
1716 *len = htonl(resbuf->len - offset);
1717 pad = 3 - ((resbuf->len - offset - 1)&3);
1718 p = (__be32 *)(resbuf->tail[0].iov_base + resbuf->tail[0].iov_len);
1720 resbuf->tail[0].iov_len += pad;
1726 svcauth_gss_release(struct svc_rqst *rqstp)
1728 struct gss_svc_data *gsd = (struct gss_svc_data *)rqstp->rq_auth_data;
1729 struct rpc_gss_wire_cred *gc = &gsd->clcred;
1730 struct xdr_buf *resbuf = &rqstp->rq_res;
1732 struct sunrpc_net *sn = net_generic(rqstp->rq_xprt->xpt_net, sunrpc_net_id);
1734 if (gc->gc_proc != RPC_GSS_PROC_DATA)
1736 /* Release can be called twice, but we only wrap once. */
1737 if (gsd->verf_start == NULL)
1739 /* normally not set till svc_send, but we need it here: */
1740 /* XXX: what for? Do we mess it up the moment we call svc_putu32
1742 resbuf->len = total_buf_len(resbuf);
1743 switch (gc->gc_svc) {
1744 case RPC_GSS_SVC_NONE:
1746 case RPC_GSS_SVC_INTEGRITY:
1747 stat = svcauth_gss_wrap_resp_integ(rqstp);
1751 case RPC_GSS_SVC_PRIVACY:
1752 stat = svcauth_gss_wrap_resp_priv(rqstp);
1757 * For any other gc_svc value, svcauth_gss_accept() already set
1758 * the auth_error appropriately; just fall through:
1765 if (rqstp->rq_client)
1766 auth_domain_put(rqstp->rq_client);
1767 rqstp->rq_client = NULL;
1768 if (rqstp->rq_gssclient)
1769 auth_domain_put(rqstp->rq_gssclient);
1770 rqstp->rq_gssclient = NULL;
1771 if (rqstp->rq_cred.cr_group_info)
1772 put_group_info(rqstp->rq_cred.cr_group_info);
1773 rqstp->rq_cred.cr_group_info = NULL;
1775 cache_put(&gsd->rsci->h, sn->rsc_cache);
1782 svcauth_gss_domain_release(struct auth_domain *dom)
1784 struct gss_domain *gd = container_of(dom, struct gss_domain, h);
1790 static struct auth_ops svcauthops_gss = {
1791 .name = "rpcsec_gss",
1792 .owner = THIS_MODULE,
1793 .flavour = RPC_AUTH_GSS,
1794 .accept = svcauth_gss_accept,
1795 .release = svcauth_gss_release,
1796 .domain_release = svcauth_gss_domain_release,
1797 .set_client = svcauth_gss_set_client,
1800 static int rsi_cache_create_net(struct net *net)
1802 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1803 struct cache_detail *cd;
1806 cd = cache_create_net(&rsi_cache_template, net);
1809 err = cache_register_net(cd, net);
1811 cache_destroy_net(cd, net);
1818 static void rsi_cache_destroy_net(struct net *net)
1820 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1821 struct cache_detail *cd = sn->rsi_cache;
1823 sn->rsi_cache = NULL;
1825 cache_unregister_net(cd, net);
1826 cache_destroy_net(cd, net);
1829 static int rsc_cache_create_net(struct net *net)
1831 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1832 struct cache_detail *cd;
1835 cd = cache_create_net(&rsc_cache_template, net);
1838 err = cache_register_net(cd, net);
1840 cache_destroy_net(cd, net);
1847 static void rsc_cache_destroy_net(struct net *net)
1849 struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
1850 struct cache_detail *cd = sn->rsc_cache;
1852 sn->rsc_cache = NULL;
1854 cache_unregister_net(cd, net);
1855 cache_destroy_net(cd, net);
1859 gss_svc_init_net(struct net *net)
1863 rv = rsc_cache_create_net(net);
1866 rv = rsi_cache_create_net(net);
1869 rv = create_use_gss_proxy_proc_entry(net);
1874 destroy_use_gss_proxy_proc_entry(net);
1876 rsc_cache_destroy_net(net);
1881 gss_svc_shutdown_net(struct net *net)
1883 destroy_use_gss_proxy_proc_entry(net);
1884 rsi_cache_destroy_net(net);
1885 rsc_cache_destroy_net(net);
1891 return svc_auth_register(RPC_AUTH_GSS, &svcauthops_gss);
1895 gss_svc_shutdown(void)
1897 svc_auth_unregister(RPC_AUTH_GSS);