2 * linux/net/sunrpc/auth_gss/auth_gss.c
4 * RPCSEC_GSS client authentication.
6 * Copyright (c) 2000 The Regents of the University of Michigan.
9 * Dug Song <dugsong@monkey.org>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/types.h>
42 #include <linux/slab.h>
43 #include <linux/sched.h>
44 #include <linux/pagemap.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/sunrpc/auth.h>
47 #include <linux/sunrpc/auth_gss.h>
48 #include <linux/sunrpc/svcauth_gss.h>
49 #include <linux/sunrpc/gss_err.h>
50 #include <linux/workqueue.h>
51 #include <linux/sunrpc/rpc_pipe_fs.h>
52 #include <linux/sunrpc/gss_api.h>
53 #include <asm/uaccess.h>
55 static const struct rpc_authops authgss_ops
;
57 static const struct rpc_credops gss_credops
;
58 static const struct rpc_credops gss_nullops
;
61 # define RPCDBG_FACILITY RPCDBG_AUTH
64 #define GSS_CRED_SLACK 1024
65 /* length of a krb5 verifier (48), plus data added before arguments when
66 * using integrity (two 4-byte integers): */
67 #define GSS_VERF_SLACK 100
71 struct rpc_auth rpc_auth
;
72 struct gss_api_mech
*mech
;
73 enum rpc_gss_svc service
;
74 struct rpc_clnt
*client
;
75 struct dentry
*dentry
;
78 /* pipe_version >= 0 if and only if someone has a pipe open. */
79 static int pipe_version
= -1;
80 static atomic_t pipe_users
= ATOMIC_INIT(0);
81 static DEFINE_SPINLOCK(pipe_version_lock
);
82 static struct rpc_wait_queue pipe_version_rpc_waitqueue
;
83 static DECLARE_WAIT_QUEUE_HEAD(pipe_version_waitqueue
);
85 static void gss_free_ctx(struct gss_cl_ctx
*);
86 static struct rpc_pipe_ops gss_upcall_ops
;
88 static inline struct gss_cl_ctx
*
89 gss_get_ctx(struct gss_cl_ctx
*ctx
)
91 atomic_inc(&ctx
->count
);
96 gss_put_ctx(struct gss_cl_ctx
*ctx
)
98 if (atomic_dec_and_test(&ctx
->count
))
103 * called by gss_upcall_callback and gss_create_upcall in order
104 * to set the gss context. The actual exchange of an old context
105 * and a new one is protected by the inode->i_lock.
108 gss_cred_set_ctx(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
)
110 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
112 if (!test_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
))
115 rcu_assign_pointer(gss_cred
->gc_ctx
, ctx
);
116 set_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
117 smp_mb__before_clear_bit();
118 clear_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
);
122 simple_get_bytes(const void *p
, const void *end
, void *res
, size_t len
)
124 const void *q
= (const void *)((const char *)p
+ len
);
125 if (unlikely(q
> end
|| q
< p
))
126 return ERR_PTR(-EFAULT
);
131 static inline const void *
132 simple_get_netobj(const void *p
, const void *end
, struct xdr_netobj
*dest
)
137 p
= simple_get_bytes(p
, end
, &len
, sizeof(len
));
140 q
= (const void *)((const char *)p
+ len
);
141 if (unlikely(q
> end
|| q
< p
))
142 return ERR_PTR(-EFAULT
);
143 dest
->data
= kmemdup(p
, len
, GFP_NOFS
);
144 if (unlikely(dest
->data
== NULL
))
145 return ERR_PTR(-ENOMEM
);
150 static struct gss_cl_ctx
*
151 gss_cred_get_ctx(struct rpc_cred
*cred
)
153 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
154 struct gss_cl_ctx
*ctx
= NULL
;
157 if (gss_cred
->gc_ctx
)
158 ctx
= gss_get_ctx(gss_cred
->gc_ctx
);
163 static struct gss_cl_ctx
*
164 gss_alloc_context(void)
166 struct gss_cl_ctx
*ctx
;
168 ctx
= kzalloc(sizeof(*ctx
), GFP_NOFS
);
170 ctx
->gc_proc
= RPC_GSS_PROC_DATA
;
171 ctx
->gc_seq
= 1; /* NetApp 6.4R1 doesn't accept seq. no. 0 */
172 spin_lock_init(&ctx
->gc_seq_lock
);
173 atomic_set(&ctx
->count
,1);
178 #define GSSD_MIN_TIMEOUT (60 * 60)
180 gss_fill_context(const void *p
, const void *end
, struct gss_cl_ctx
*ctx
, struct gss_api_mech
*gm
)
184 unsigned int timeout
;
188 /* First unsigned int gives the lifetime (in seconds) of the cred */
189 p
= simple_get_bytes(p
, end
, &timeout
, sizeof(timeout
));
193 timeout
= GSSD_MIN_TIMEOUT
;
194 ctx
->gc_expiry
= jiffies
+ (unsigned long)timeout
* HZ
* 3 / 4;
195 /* Sequence number window. Determines the maximum number of simultaneous requests */
196 p
= simple_get_bytes(p
, end
, &window_size
, sizeof(window_size
));
199 ctx
->gc_win
= window_size
;
200 /* gssd signals an error by passing ctx->gc_win = 0: */
201 if (ctx
->gc_win
== 0) {
202 /* in which case, p points to an error code which we ignore */
203 p
= ERR_PTR(-EACCES
);
206 /* copy the opaque wire context */
207 p
= simple_get_netobj(p
, end
, &ctx
->gc_wire_ctx
);
210 /* import the opaque security context */
211 p
= simple_get_bytes(p
, end
, &seclen
, sizeof(seclen
));
214 q
= (const void *)((const char *)p
+ seclen
);
215 if (unlikely(q
> end
|| q
< p
)) {
216 p
= ERR_PTR(-EFAULT
);
219 ret
= gss_import_sec_context(p
, seclen
, gm
, &ctx
->gc_gss_ctx
);
226 dprintk("RPC: gss_fill_context returning %ld\n", -PTR_ERR(p
));
231 struct gss_upcall_msg
{
234 struct rpc_pipe_msg msg
;
235 struct list_head list
;
236 struct gss_auth
*auth
;
237 struct rpc_inode
*inode
;
238 struct rpc_wait_queue rpc_waitqueue
;
239 wait_queue_head_t waitqueue
;
240 struct gss_cl_ctx
*ctx
;
243 static int get_pipe_version(void)
247 spin_lock(&pipe_version_lock
);
248 if (pipe_version
>= 0) {
249 atomic_inc(&pipe_users
);
253 spin_unlock(&pipe_version_lock
);
257 static void put_pipe_version(void)
259 if (atomic_dec_and_lock(&pipe_users
, &pipe_version_lock
)) {
261 spin_unlock(&pipe_version_lock
);
266 gss_release_msg(struct gss_upcall_msg
*gss_msg
)
268 if (!atomic_dec_and_test(&gss_msg
->count
))
271 BUG_ON(!list_empty(&gss_msg
->list
));
272 if (gss_msg
->ctx
!= NULL
)
273 gss_put_ctx(gss_msg
->ctx
);
274 rpc_destroy_wait_queue(&gss_msg
->rpc_waitqueue
);
278 static struct gss_upcall_msg
*
279 __gss_find_upcall(struct rpc_inode
*rpci
, uid_t uid
)
281 struct gss_upcall_msg
*pos
;
282 list_for_each_entry(pos
, &rpci
->in_downcall
, list
) {
285 atomic_inc(&pos
->count
);
286 dprintk("RPC: gss_find_upcall found msg %p\n", pos
);
289 dprintk("RPC: gss_find_upcall found nothing\n");
293 /* Try to add an upcall to the pipefs queue.
294 * If an upcall owned by our uid already exists, then we return a reference
295 * to that upcall instead of adding the new upcall.
297 static inline struct gss_upcall_msg
*
298 gss_add_msg(struct gss_auth
*gss_auth
, struct gss_upcall_msg
*gss_msg
)
300 struct rpc_inode
*rpci
= gss_msg
->inode
;
301 struct inode
*inode
= &rpci
->vfs_inode
;
302 struct gss_upcall_msg
*old
;
304 spin_lock(&inode
->i_lock
);
305 old
= __gss_find_upcall(rpci
, gss_msg
->uid
);
307 atomic_inc(&gss_msg
->count
);
308 list_add(&gss_msg
->list
, &rpci
->in_downcall
);
311 spin_unlock(&inode
->i_lock
);
316 __gss_unhash_msg(struct gss_upcall_msg
*gss_msg
)
318 list_del_init(&gss_msg
->list
);
319 rpc_wake_up_status(&gss_msg
->rpc_waitqueue
, gss_msg
->msg
.errno
);
320 wake_up_all(&gss_msg
->waitqueue
);
321 atomic_dec(&gss_msg
->count
);
325 gss_unhash_msg(struct gss_upcall_msg
*gss_msg
)
327 struct inode
*inode
= &gss_msg
->inode
->vfs_inode
;
329 if (list_empty(&gss_msg
->list
))
331 spin_lock(&inode
->i_lock
);
332 if (!list_empty(&gss_msg
->list
))
333 __gss_unhash_msg(gss_msg
);
334 spin_unlock(&inode
->i_lock
);
338 gss_upcall_callback(struct rpc_task
*task
)
340 struct gss_cred
*gss_cred
= container_of(task
->tk_msg
.rpc_cred
,
341 struct gss_cred
, gc_base
);
342 struct gss_upcall_msg
*gss_msg
= gss_cred
->gc_upcall
;
343 struct inode
*inode
= &gss_msg
->inode
->vfs_inode
;
345 spin_lock(&inode
->i_lock
);
347 gss_cred_set_ctx(task
->tk_msg
.rpc_cred
, gss_msg
->ctx
);
349 task
->tk_status
= gss_msg
->msg
.errno
;
350 gss_cred
->gc_upcall
= NULL
;
351 rpc_wake_up_status(&gss_msg
->rpc_waitqueue
, gss_msg
->msg
.errno
);
352 spin_unlock(&inode
->i_lock
);
353 gss_release_msg(gss_msg
);
356 static inline struct gss_upcall_msg
*
357 gss_alloc_msg(struct gss_auth
*gss_auth
, uid_t uid
)
359 struct gss_upcall_msg
*gss_msg
;
362 gss_msg
= kzalloc(sizeof(*gss_msg
), GFP_NOFS
);
364 return ERR_PTR(-ENOMEM
);
365 vers
= get_pipe_version();
368 return ERR_PTR(vers
);
370 gss_msg
->inode
= RPC_I(gss_auth
->dentry
->d_inode
);
371 INIT_LIST_HEAD(&gss_msg
->list
);
372 rpc_init_wait_queue(&gss_msg
->rpc_waitqueue
, "RPCSEC_GSS upcall waitq");
373 init_waitqueue_head(&gss_msg
->waitqueue
);
374 atomic_set(&gss_msg
->count
, 1);
375 gss_msg
->msg
.data
= &gss_msg
->uid
;
376 gss_msg
->msg
.len
= sizeof(gss_msg
->uid
);
378 gss_msg
->auth
= gss_auth
;
382 static struct gss_upcall_msg
*
383 gss_setup_upcall(struct rpc_clnt
*clnt
, struct gss_auth
*gss_auth
, struct rpc_cred
*cred
)
385 struct gss_cred
*gss_cred
= container_of(cred
,
386 struct gss_cred
, gc_base
);
387 struct gss_upcall_msg
*gss_new
, *gss_msg
;
388 uid_t uid
= cred
->cr_uid
;
390 /* Special case: rpc.gssd assumes that uid == 0 implies machine creds */
391 if (gss_cred
->gc_machine_cred
!= 0)
394 gss_new
= gss_alloc_msg(gss_auth
, uid
);
397 gss_msg
= gss_add_msg(gss_auth
, gss_new
);
398 if (gss_msg
== gss_new
) {
399 struct inode
*inode
= &gss_new
->inode
->vfs_inode
;
400 int res
= rpc_queue_upcall(inode
, &gss_new
->msg
);
402 gss_unhash_msg(gss_new
);
403 gss_msg
= ERR_PTR(res
);
406 gss_release_msg(gss_new
);
410 static void warn_gssd(void)
412 static unsigned long ratelimit
;
413 unsigned long now
= jiffies
;
415 if (time_after(now
, ratelimit
)) {
416 printk(KERN_WARNING
"RPC: AUTH_GSS upcall timed out.\n"
417 "Please check user daemon is running.\n");
418 ratelimit
= now
+ 15*HZ
;
423 gss_refresh_upcall(struct rpc_task
*task
)
425 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
426 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
,
427 struct gss_auth
, rpc_auth
);
428 struct gss_cred
*gss_cred
= container_of(cred
,
429 struct gss_cred
, gc_base
);
430 struct gss_upcall_msg
*gss_msg
;
434 dprintk("RPC: %5u gss_refresh_upcall for uid %u\n", task
->tk_pid
,
436 gss_msg
= gss_setup_upcall(task
->tk_client
, gss_auth
, cred
);
437 if (IS_ERR(gss_msg
) == -EAGAIN
) {
438 /* XXX: warning on the first, under the assumption we
439 * shouldn't normally hit this case on a refresh. */
441 task
->tk_timeout
= 15*HZ
;
442 rpc_sleep_on(&pipe_version_rpc_waitqueue
, task
, NULL
);
445 if (IS_ERR(gss_msg
)) {
446 err
= PTR_ERR(gss_msg
);
449 inode
= &gss_msg
->inode
->vfs_inode
;
450 spin_lock(&inode
->i_lock
);
451 if (gss_cred
->gc_upcall
!= NULL
)
452 rpc_sleep_on(&gss_cred
->gc_upcall
->rpc_waitqueue
, task
, NULL
);
453 else if (gss_msg
->ctx
!= NULL
) {
454 gss_cred_set_ctx(task
->tk_msg
.rpc_cred
, gss_msg
->ctx
);
455 gss_cred
->gc_upcall
= NULL
;
456 rpc_wake_up_status(&gss_msg
->rpc_waitqueue
, gss_msg
->msg
.errno
);
457 } else if (gss_msg
->msg
.errno
>= 0) {
458 task
->tk_timeout
= 0;
459 gss_cred
->gc_upcall
= gss_msg
;
460 /* gss_upcall_callback will release the reference to gss_upcall_msg */
461 atomic_inc(&gss_msg
->count
);
462 rpc_sleep_on(&gss_msg
->rpc_waitqueue
, task
, gss_upcall_callback
);
464 err
= gss_msg
->msg
.errno
;
465 spin_unlock(&inode
->i_lock
);
466 gss_release_msg(gss_msg
);
468 dprintk("RPC: %5u gss_refresh_upcall for uid %u result %d\n",
469 task
->tk_pid
, cred
->cr_uid
, err
);
474 gss_create_upcall(struct gss_auth
*gss_auth
, struct gss_cred
*gss_cred
)
477 struct rpc_cred
*cred
= &gss_cred
->gc_base
;
478 struct gss_upcall_msg
*gss_msg
;
482 dprintk("RPC: gss_upcall for uid %u\n", cred
->cr_uid
);
484 gss_msg
= gss_setup_upcall(gss_auth
->client
, gss_auth
, cred
);
485 if (PTR_ERR(gss_msg
) == -EAGAIN
) {
486 err
= wait_event_interruptible_timeout(pipe_version_waitqueue
,
487 pipe_version
>= 0, 15*HZ
);
490 if (pipe_version
< 0)
494 if (IS_ERR(gss_msg
)) {
495 err
= PTR_ERR(gss_msg
);
498 inode
= &gss_msg
->inode
->vfs_inode
;
500 prepare_to_wait(&gss_msg
->waitqueue
, &wait
, TASK_INTERRUPTIBLE
);
501 spin_lock(&inode
->i_lock
);
502 if (gss_msg
->ctx
!= NULL
|| gss_msg
->msg
.errno
< 0) {
505 spin_unlock(&inode
->i_lock
);
513 gss_cred_set_ctx(cred
, gss_msg
->ctx
);
515 err
= gss_msg
->msg
.errno
;
516 spin_unlock(&inode
->i_lock
);
518 finish_wait(&gss_msg
->waitqueue
, &wait
);
519 gss_release_msg(gss_msg
);
521 dprintk("RPC: gss_create_upcall for uid %u result %d\n",
527 gss_pipe_upcall(struct file
*filp
, struct rpc_pipe_msg
*msg
,
528 char __user
*dst
, size_t buflen
)
530 char *data
= (char *)msg
->data
+ msg
->copied
;
531 size_t mlen
= min(msg
->len
, buflen
);
534 left
= copy_to_user(dst
, data
, mlen
);
536 msg
->errno
= -EFAULT
;
546 #define MSG_BUF_MAXSIZE 1024
549 gss_pipe_downcall(struct file
*filp
, const char __user
*src
, size_t mlen
)
553 struct gss_upcall_msg
*gss_msg
;
554 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
555 struct gss_cl_ctx
*ctx
;
557 ssize_t err
= -EFBIG
;
559 if (mlen
> MSG_BUF_MAXSIZE
)
562 buf
= kmalloc(mlen
, GFP_NOFS
);
567 if (copy_from_user(buf
, src
, mlen
))
570 end
= (const void *)((char *)buf
+ mlen
);
571 p
= simple_get_bytes(buf
, end
, &uid
, sizeof(uid
));
578 ctx
= gss_alloc_context();
583 /* Find a matching upcall */
584 spin_lock(&inode
->i_lock
);
585 gss_msg
= __gss_find_upcall(RPC_I(inode
), uid
);
586 if (gss_msg
== NULL
) {
587 spin_unlock(&inode
->i_lock
);
590 list_del_init(&gss_msg
->list
);
591 spin_unlock(&inode
->i_lock
);
593 p
= gss_fill_context(p
, end
, ctx
, gss_msg
->auth
->mech
);
596 gss_msg
->msg
.errno
= (err
== -EAGAIN
) ? -EAGAIN
: -EACCES
;
597 goto err_release_msg
;
599 gss_msg
->ctx
= gss_get_ctx(ctx
);
603 spin_lock(&inode
->i_lock
);
604 __gss_unhash_msg(gss_msg
);
605 spin_unlock(&inode
->i_lock
);
606 gss_release_msg(gss_msg
);
612 dprintk("RPC: gss_pipe_downcall returning %Zd\n", err
);
617 gss_pipe_open(struct inode
*inode
)
619 spin_lock(&pipe_version_lock
);
620 if (pipe_version
< 0) {
622 rpc_wake_up(&pipe_version_rpc_waitqueue
);
623 wake_up(&pipe_version_waitqueue
);
625 atomic_inc(&pipe_users
);
626 spin_unlock(&pipe_version_lock
);
631 gss_pipe_release(struct inode
*inode
)
633 struct rpc_inode
*rpci
= RPC_I(inode
);
634 struct gss_upcall_msg
*gss_msg
;
636 spin_lock(&inode
->i_lock
);
637 while (!list_empty(&rpci
->in_downcall
)) {
639 gss_msg
= list_entry(rpci
->in_downcall
.next
,
640 struct gss_upcall_msg
, list
);
641 gss_msg
->msg
.errno
= -EPIPE
;
642 atomic_inc(&gss_msg
->count
);
643 __gss_unhash_msg(gss_msg
);
644 spin_unlock(&inode
->i_lock
);
645 gss_release_msg(gss_msg
);
646 spin_lock(&inode
->i_lock
);
648 spin_unlock(&inode
->i_lock
);
654 gss_pipe_destroy_msg(struct rpc_pipe_msg
*msg
)
656 struct gss_upcall_msg
*gss_msg
= container_of(msg
, struct gss_upcall_msg
, msg
);
658 if (msg
->errno
< 0) {
659 dprintk("RPC: gss_pipe_destroy_msg releasing msg %p\n",
661 atomic_inc(&gss_msg
->count
);
662 gss_unhash_msg(gss_msg
);
663 if (msg
->errno
== -ETIMEDOUT
)
665 gss_release_msg(gss_msg
);
670 * NOTE: we have the opportunity to use different
671 * parameters based on the input flavor (which must be a pseudoflavor)
673 static struct rpc_auth
*
674 gss_create(struct rpc_clnt
*clnt
, rpc_authflavor_t flavor
)
676 struct gss_auth
*gss_auth
;
677 struct rpc_auth
* auth
;
678 int err
= -ENOMEM
; /* XXX? */
680 dprintk("RPC: creating GSS authenticator for client %p\n", clnt
);
682 if (!try_module_get(THIS_MODULE
))
684 if (!(gss_auth
= kmalloc(sizeof(*gss_auth
), GFP_KERNEL
)))
686 gss_auth
->client
= clnt
;
688 gss_auth
->mech
= gss_mech_get_by_pseudoflavor(flavor
);
689 if (!gss_auth
->mech
) {
690 printk(KERN_WARNING
"%s: Pseudoflavor %d not found!\n",
694 gss_auth
->service
= gss_pseudoflavor_to_service(gss_auth
->mech
, flavor
);
695 if (gss_auth
->service
== 0)
697 auth
= &gss_auth
->rpc_auth
;
698 auth
->au_cslack
= GSS_CRED_SLACK
>> 2;
699 auth
->au_rslack
= GSS_VERF_SLACK
>> 2;
700 auth
->au_ops
= &authgss_ops
;
701 auth
->au_flavor
= flavor
;
702 atomic_set(&auth
->au_count
, 1);
703 kref_init(&gss_auth
->kref
);
705 gss_auth
->dentry
= rpc_mkpipe(clnt
->cl_dentry
, gss_auth
->mech
->gm_name
,
706 clnt
, &gss_upcall_ops
, RPC_PIPE_WAIT_FOR_OPEN
);
707 if (IS_ERR(gss_auth
->dentry
)) {
708 err
= PTR_ERR(gss_auth
->dentry
);
712 err
= rpcauth_init_credcache(auth
);
714 goto err_unlink_pipe
;
718 rpc_unlink(gss_auth
->dentry
);
720 gss_mech_put(gss_auth
->mech
);
724 module_put(THIS_MODULE
);
729 gss_free(struct gss_auth
*gss_auth
)
731 rpc_unlink(gss_auth
->dentry
);
732 gss_mech_put(gss_auth
->mech
);
735 module_put(THIS_MODULE
);
739 gss_free_callback(struct kref
*kref
)
741 struct gss_auth
*gss_auth
= container_of(kref
, struct gss_auth
, kref
);
747 gss_destroy(struct rpc_auth
*auth
)
749 struct gss_auth
*gss_auth
;
751 dprintk("RPC: destroying GSS authenticator %p flavor %d\n",
752 auth
, auth
->au_flavor
);
754 rpcauth_destroy_credcache(auth
);
756 gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
757 kref_put(&gss_auth
->kref
, gss_free_callback
);
761 * gss_destroying_context will cause the RPCSEC_GSS to send a NULL RPC call
762 * to the server with the GSS control procedure field set to
763 * RPC_GSS_PROC_DESTROY. This should normally cause the server to release
764 * all RPCSEC_GSS state associated with that context.
767 gss_destroying_context(struct rpc_cred
*cred
)
769 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
770 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
, struct gss_auth
, rpc_auth
);
771 struct rpc_task
*task
;
773 if (gss_cred
->gc_ctx
== NULL
||
774 test_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
) == 0)
777 gss_cred
->gc_ctx
->gc_proc
= RPC_GSS_PROC_DESTROY
;
778 cred
->cr_ops
= &gss_nullops
;
780 /* Take a reference to ensure the cred will be destroyed either
781 * by the RPC call or by the put_rpccred() below */
784 task
= rpc_call_null(gss_auth
->client
, cred
, RPC_TASK_ASYNC
|RPC_TASK_SOFT
);
792 /* gss_destroy_cred (and gss_free_ctx) are used to clean up after failure
793 * to create a new cred or context, so they check that things have been
794 * allocated before freeing them. */
796 gss_do_free_ctx(struct gss_cl_ctx
*ctx
)
798 dprintk("RPC: gss_free_ctx\n");
800 kfree(ctx
->gc_wire_ctx
.data
);
805 gss_free_ctx_callback(struct rcu_head
*head
)
807 struct gss_cl_ctx
*ctx
= container_of(head
, struct gss_cl_ctx
, gc_rcu
);
808 gss_do_free_ctx(ctx
);
812 gss_free_ctx(struct gss_cl_ctx
*ctx
)
814 struct gss_ctx
*gc_gss_ctx
;
816 gc_gss_ctx
= rcu_dereference(ctx
->gc_gss_ctx
);
817 rcu_assign_pointer(ctx
->gc_gss_ctx
, NULL
);
818 call_rcu(&ctx
->gc_rcu
, gss_free_ctx_callback
);
820 gss_delete_sec_context(&gc_gss_ctx
);
824 gss_free_cred(struct gss_cred
*gss_cred
)
826 dprintk("RPC: gss_free_cred %p\n", gss_cred
);
831 gss_free_cred_callback(struct rcu_head
*head
)
833 struct gss_cred
*gss_cred
= container_of(head
, struct gss_cred
, gc_base
.cr_rcu
);
834 gss_free_cred(gss_cred
);
838 gss_destroy_nullcred(struct rpc_cred
*cred
)
840 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
841 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
, struct gss_auth
, rpc_auth
);
842 struct gss_cl_ctx
*ctx
= gss_cred
->gc_ctx
;
844 rcu_assign_pointer(gss_cred
->gc_ctx
, NULL
);
845 call_rcu(&cred
->cr_rcu
, gss_free_cred_callback
);
848 kref_put(&gss_auth
->kref
, gss_free_callback
);
852 gss_destroy_cred(struct rpc_cred
*cred
)
855 if (gss_destroying_context(cred
))
857 gss_destroy_nullcred(cred
);
861 * Lookup RPCSEC_GSS cred for the current process
863 static struct rpc_cred
*
864 gss_lookup_cred(struct rpc_auth
*auth
, struct auth_cred
*acred
, int flags
)
866 return rpcauth_lookup_credcache(auth
, acred
, flags
);
869 static struct rpc_cred
*
870 gss_create_cred(struct rpc_auth
*auth
, struct auth_cred
*acred
, int flags
)
872 struct gss_auth
*gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
873 struct gss_cred
*cred
= NULL
;
876 dprintk("RPC: gss_create_cred for uid %d, flavor %d\n",
877 acred
->uid
, auth
->au_flavor
);
879 if (!(cred
= kzalloc(sizeof(*cred
), GFP_NOFS
)))
882 rpcauth_init_cred(&cred
->gc_base
, acred
, auth
, &gss_credops
);
884 * Note: in order to force a call to call_refresh(), we deliberately
885 * fail to flag the credential as RPCAUTH_CRED_UPTODATE.
887 cred
->gc_base
.cr_flags
= 1UL << RPCAUTH_CRED_NEW
;
888 cred
->gc_service
= gss_auth
->service
;
889 cred
->gc_machine_cred
= acred
->machine_cred
;
890 kref_get(&gss_auth
->kref
);
891 return &cred
->gc_base
;
894 dprintk("RPC: gss_create_cred failed with error %d\n", err
);
899 gss_cred_init(struct rpc_auth
*auth
, struct rpc_cred
*cred
)
901 struct gss_auth
*gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
902 struct gss_cred
*gss_cred
= container_of(cred
,struct gss_cred
, gc_base
);
906 err
= gss_create_upcall(gss_auth
, gss_cred
);
907 } while (err
== -EAGAIN
);
912 gss_match(struct auth_cred
*acred
, struct rpc_cred
*rc
, int flags
)
914 struct gss_cred
*gss_cred
= container_of(rc
, struct gss_cred
, gc_base
);
916 if (test_bit(RPCAUTH_CRED_NEW
, &rc
->cr_flags
))
918 /* Don't match with creds that have expired. */
919 if (time_after(jiffies
, gss_cred
->gc_ctx
->gc_expiry
))
921 if (!test_bit(RPCAUTH_CRED_UPTODATE
, &rc
->cr_flags
))
924 if (acred
->machine_cred
!= gss_cred
->gc_machine_cred
)
926 return (rc
->cr_uid
== acred
->uid
);
930 * Marshal credentials.
931 * Maybe we should keep a cached credential for performance reasons.
934 gss_marshal(struct rpc_task
*task
, __be32
*p
)
936 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
937 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
939 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
941 struct rpc_rqst
*req
= task
->tk_rqstp
;
943 struct xdr_netobj mic
;
945 struct xdr_buf verf_buf
;
947 dprintk("RPC: %5u gss_marshal\n", task
->tk_pid
);
949 *p
++ = htonl(RPC_AUTH_GSS
);
952 spin_lock(&ctx
->gc_seq_lock
);
953 req
->rq_seqno
= ctx
->gc_seq
++;
954 spin_unlock(&ctx
->gc_seq_lock
);
956 *p
++ = htonl((u32
) RPC_GSS_VERSION
);
957 *p
++ = htonl((u32
) ctx
->gc_proc
);
958 *p
++ = htonl((u32
) req
->rq_seqno
);
959 *p
++ = htonl((u32
) gss_cred
->gc_service
);
960 p
= xdr_encode_netobj(p
, &ctx
->gc_wire_ctx
);
961 *cred_len
= htonl((p
- (cred_len
+ 1)) << 2);
963 /* We compute the checksum for the verifier over the xdr-encoded bytes
964 * starting with the xid and ending at the end of the credential: */
965 iov
.iov_base
= xprt_skip_transport_header(task
->tk_xprt
,
966 req
->rq_snd_buf
.head
[0].iov_base
);
967 iov
.iov_len
= (u8
*)p
- (u8
*)iov
.iov_base
;
968 xdr_buf_from_iov(&iov
, &verf_buf
);
970 /* set verifier flavor*/
971 *p
++ = htonl(RPC_AUTH_GSS
);
973 mic
.data
= (u8
*)(p
+ 1);
974 maj_stat
= gss_get_mic(ctx
->gc_gss_ctx
, &verf_buf
, &mic
);
975 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
) {
976 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
977 } else if (maj_stat
!= 0) {
978 printk("gss_marshal: gss_get_mic FAILED (%d)\n", maj_stat
);
981 p
= xdr_encode_opaque(p
, NULL
, mic
.len
);
989 static int gss_renew_cred(struct rpc_task
*task
)
991 struct rpc_cred
*oldcred
= task
->tk_msg
.rpc_cred
;
992 struct gss_cred
*gss_cred
= container_of(oldcred
,
995 struct rpc_auth
*auth
= oldcred
->cr_auth
;
996 struct auth_cred acred
= {
997 .uid
= oldcred
->cr_uid
,
998 .machine_cred
= gss_cred
->gc_machine_cred
,
1000 struct rpc_cred
*new;
1002 new = gss_lookup_cred(auth
, &acred
, RPCAUTH_LOOKUP_NEW
);
1004 return PTR_ERR(new);
1005 task
->tk_msg
.rpc_cred
= new;
1006 put_rpccred(oldcred
);
1011 * Refresh credentials. XXX - finish
1014 gss_refresh(struct rpc_task
*task
)
1016 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1019 if (!test_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
) &&
1020 !test_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
)) {
1021 ret
= gss_renew_cred(task
);
1024 cred
= task
->tk_msg
.rpc_cred
;
1027 if (test_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
))
1028 ret
= gss_refresh_upcall(task
);
1033 /* Dummy refresh routine: used only when destroying the context */
1035 gss_refresh_null(struct rpc_task
*task
)
1041 gss_validate(struct rpc_task
*task
, __be32
*p
)
1043 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1044 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1047 struct xdr_buf verf_buf
;
1048 struct xdr_netobj mic
;
1052 dprintk("RPC: %5u gss_validate\n", task
->tk_pid
);
1055 if ((len
= ntohl(*p
++)) > RPC_MAX_AUTH_SIZE
)
1057 if (flav
!= RPC_AUTH_GSS
)
1059 seq
= htonl(task
->tk_rqstp
->rq_seqno
);
1060 iov
.iov_base
= &seq
;
1061 iov
.iov_len
= sizeof(seq
);
1062 xdr_buf_from_iov(&iov
, &verf_buf
);
1066 maj_stat
= gss_verify_mic(ctx
->gc_gss_ctx
, &verf_buf
, &mic
);
1067 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1068 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1070 dprintk("RPC: %5u gss_validate: gss_verify_mic returned "
1071 "error 0x%08x\n", task
->tk_pid
, maj_stat
);
1074 /* We leave it to unwrap to calculate au_rslack. For now we just
1075 * calculate the length of the verifier: */
1076 cred
->cr_auth
->au_verfsize
= XDR_QUADLEN(len
) + 2;
1078 dprintk("RPC: %5u gss_validate: gss_verify_mic succeeded.\n",
1080 return p
+ XDR_QUADLEN(len
);
1083 dprintk("RPC: %5u gss_validate failed.\n", task
->tk_pid
);
1088 gss_wrap_req_integ(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1089 kxdrproc_t encode
, struct rpc_rqst
*rqstp
, __be32
*p
, void *obj
)
1091 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1092 struct xdr_buf integ_buf
;
1093 __be32
*integ_len
= NULL
;
1094 struct xdr_netobj mic
;
1102 offset
= (u8
*)p
- (u8
*)snd_buf
->head
[0].iov_base
;
1103 *p
++ = htonl(rqstp
->rq_seqno
);
1105 status
= encode(rqstp
, p
, obj
);
1109 if (xdr_buf_subsegment(snd_buf
, &integ_buf
,
1110 offset
, snd_buf
->len
- offset
))
1112 *integ_len
= htonl(integ_buf
.len
);
1114 /* guess whether we're in the head or the tail: */
1115 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
)
1116 iov
= snd_buf
->tail
;
1118 iov
= snd_buf
->head
;
1119 p
= iov
->iov_base
+ iov
->iov_len
;
1120 mic
.data
= (u8
*)(p
+ 1);
1122 maj_stat
= gss_get_mic(ctx
->gc_gss_ctx
, &integ_buf
, &mic
);
1123 status
= -EIO
; /* XXX? */
1124 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1125 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1128 q
= xdr_encode_opaque(p
, NULL
, mic
.len
);
1130 offset
= (u8
*)q
- (u8
*)p
;
1131 iov
->iov_len
+= offset
;
1132 snd_buf
->len
+= offset
;
1137 priv_release_snd_buf(struct rpc_rqst
*rqstp
)
1141 for (i
=0; i
< rqstp
->rq_enc_pages_num
; i
++)
1142 __free_page(rqstp
->rq_enc_pages
[i
]);
1143 kfree(rqstp
->rq_enc_pages
);
1147 alloc_enc_pages(struct rpc_rqst
*rqstp
)
1149 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1152 if (snd_buf
->page_len
== 0) {
1153 rqstp
->rq_enc_pages_num
= 0;
1157 first
= snd_buf
->page_base
>> PAGE_CACHE_SHIFT
;
1158 last
= (snd_buf
->page_base
+ snd_buf
->page_len
- 1) >> PAGE_CACHE_SHIFT
;
1159 rqstp
->rq_enc_pages_num
= last
- first
+ 1 + 1;
1161 = kmalloc(rqstp
->rq_enc_pages_num
* sizeof(struct page
*),
1163 if (!rqstp
->rq_enc_pages
)
1165 for (i
=0; i
< rqstp
->rq_enc_pages_num
; i
++) {
1166 rqstp
->rq_enc_pages
[i
] = alloc_page(GFP_NOFS
);
1167 if (rqstp
->rq_enc_pages
[i
] == NULL
)
1170 rqstp
->rq_release_snd_buf
= priv_release_snd_buf
;
1173 for (i
--; i
>= 0; i
--) {
1174 __free_page(rqstp
->rq_enc_pages
[i
]);
1181 gss_wrap_req_priv(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1182 kxdrproc_t encode
, struct rpc_rqst
*rqstp
, __be32
*p
, void *obj
)
1184 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1189 struct page
**inpages
;
1196 offset
= (u8
*)p
- (u8
*)snd_buf
->head
[0].iov_base
;
1197 *p
++ = htonl(rqstp
->rq_seqno
);
1199 status
= encode(rqstp
, p
, obj
);
1203 status
= alloc_enc_pages(rqstp
);
1206 first
= snd_buf
->page_base
>> PAGE_CACHE_SHIFT
;
1207 inpages
= snd_buf
->pages
+ first
;
1208 snd_buf
->pages
= rqstp
->rq_enc_pages
;
1209 snd_buf
->page_base
-= first
<< PAGE_CACHE_SHIFT
;
1210 /* Give the tail its own page, in case we need extra space in the
1211 * head when wrapping: */
1212 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
) {
1213 tmp
= page_address(rqstp
->rq_enc_pages
[rqstp
->rq_enc_pages_num
- 1]);
1214 memcpy(tmp
, snd_buf
->tail
[0].iov_base
, snd_buf
->tail
[0].iov_len
);
1215 snd_buf
->tail
[0].iov_base
= tmp
;
1217 maj_stat
= gss_wrap(ctx
->gc_gss_ctx
, offset
, snd_buf
, inpages
);
1218 /* RPC_SLACK_SPACE should prevent this ever happening: */
1219 BUG_ON(snd_buf
->len
> snd_buf
->buflen
);
1221 /* We're assuming that when GSS_S_CONTEXT_EXPIRED, the encryption was
1222 * done anyway, so it's safe to put the request on the wire: */
1223 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1224 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1228 *opaque_len
= htonl(snd_buf
->len
- offset
);
1229 /* guess whether we're in the head or the tail: */
1230 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
)
1231 iov
= snd_buf
->tail
;
1233 iov
= snd_buf
->head
;
1234 p
= iov
->iov_base
+ iov
->iov_len
;
1235 pad
= 3 - ((snd_buf
->len
- offset
- 1) & 3);
1237 iov
->iov_len
+= pad
;
1238 snd_buf
->len
+= pad
;
1244 gss_wrap_req(struct rpc_task
*task
,
1245 kxdrproc_t encode
, void *rqstp
, __be32
*p
, void *obj
)
1247 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1248 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
1250 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1253 dprintk("RPC: %5u gss_wrap_req\n", task
->tk_pid
);
1254 if (ctx
->gc_proc
!= RPC_GSS_PROC_DATA
) {
1255 /* The spec seems a little ambiguous here, but I think that not
1256 * wrapping context destruction requests makes the most sense.
1258 status
= encode(rqstp
, p
, obj
);
1261 switch (gss_cred
->gc_service
) {
1262 case RPC_GSS_SVC_NONE
:
1263 status
= encode(rqstp
, p
, obj
);
1265 case RPC_GSS_SVC_INTEGRITY
:
1266 status
= gss_wrap_req_integ(cred
, ctx
, encode
,
1269 case RPC_GSS_SVC_PRIVACY
:
1270 status
= gss_wrap_req_priv(cred
, ctx
, encode
,
1276 dprintk("RPC: %5u gss_wrap_req returning %d\n", task
->tk_pid
, status
);
1281 gss_unwrap_resp_integ(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1282 struct rpc_rqst
*rqstp
, __be32
**p
)
1284 struct xdr_buf
*rcv_buf
= &rqstp
->rq_rcv_buf
;
1285 struct xdr_buf integ_buf
;
1286 struct xdr_netobj mic
;
1287 u32 data_offset
, mic_offset
;
1292 integ_len
= ntohl(*(*p
)++);
1295 data_offset
= (u8
*)(*p
) - (u8
*)rcv_buf
->head
[0].iov_base
;
1296 mic_offset
= integ_len
+ data_offset
;
1297 if (mic_offset
> rcv_buf
->len
)
1299 if (ntohl(*(*p
)++) != rqstp
->rq_seqno
)
1302 if (xdr_buf_subsegment(rcv_buf
, &integ_buf
, data_offset
,
1303 mic_offset
- data_offset
))
1306 if (xdr_buf_read_netobj(rcv_buf
, &mic
, mic_offset
))
1309 maj_stat
= gss_verify_mic(ctx
->gc_gss_ctx
, &integ_buf
, &mic
);
1310 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1311 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1312 if (maj_stat
!= GSS_S_COMPLETE
)
1318 gss_unwrap_resp_priv(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1319 struct rpc_rqst
*rqstp
, __be32
**p
)
1321 struct xdr_buf
*rcv_buf
= &rqstp
->rq_rcv_buf
;
1327 opaque_len
= ntohl(*(*p
)++);
1328 offset
= (u8
*)(*p
) - (u8
*)rcv_buf
->head
[0].iov_base
;
1329 if (offset
+ opaque_len
> rcv_buf
->len
)
1331 /* remove padding: */
1332 rcv_buf
->len
= offset
+ opaque_len
;
1334 maj_stat
= gss_unwrap(ctx
->gc_gss_ctx
, offset
, rcv_buf
);
1335 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1336 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1337 if (maj_stat
!= GSS_S_COMPLETE
)
1339 if (ntohl(*(*p
)++) != rqstp
->rq_seqno
)
1347 gss_unwrap_resp(struct rpc_task
*task
,
1348 kxdrproc_t decode
, void *rqstp
, __be32
*p
, void *obj
)
1350 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1351 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
1353 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1355 struct kvec
*head
= ((struct rpc_rqst
*)rqstp
)->rq_rcv_buf
.head
;
1356 int savedlen
= head
->iov_len
;
1359 if (ctx
->gc_proc
!= RPC_GSS_PROC_DATA
)
1361 switch (gss_cred
->gc_service
) {
1362 case RPC_GSS_SVC_NONE
:
1364 case RPC_GSS_SVC_INTEGRITY
:
1365 status
= gss_unwrap_resp_integ(cred
, ctx
, rqstp
, &p
);
1369 case RPC_GSS_SVC_PRIVACY
:
1370 status
= gss_unwrap_resp_priv(cred
, ctx
, rqstp
, &p
);
1375 /* take into account extra slack for integrity and privacy cases: */
1376 cred
->cr_auth
->au_rslack
= cred
->cr_auth
->au_verfsize
+ (p
- savedp
)
1377 + (savedlen
- head
->iov_len
);
1379 status
= decode(rqstp
, p
, obj
);
1382 dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task
->tk_pid
,
1387 static const struct rpc_authops authgss_ops
= {
1388 .owner
= THIS_MODULE
,
1389 .au_flavor
= RPC_AUTH_GSS
,
1390 .au_name
= "RPCSEC_GSS",
1391 .create
= gss_create
,
1392 .destroy
= gss_destroy
,
1393 .lookup_cred
= gss_lookup_cred
,
1394 .crcreate
= gss_create_cred
1397 static const struct rpc_credops gss_credops
= {
1398 .cr_name
= "AUTH_GSS",
1399 .crdestroy
= gss_destroy_cred
,
1400 .cr_init
= gss_cred_init
,
1401 .crbind
= rpcauth_generic_bind_cred
,
1402 .crmatch
= gss_match
,
1403 .crmarshal
= gss_marshal
,
1404 .crrefresh
= gss_refresh
,
1405 .crvalidate
= gss_validate
,
1406 .crwrap_req
= gss_wrap_req
,
1407 .crunwrap_resp
= gss_unwrap_resp
,
1410 static const struct rpc_credops gss_nullops
= {
1411 .cr_name
= "AUTH_GSS",
1412 .crdestroy
= gss_destroy_nullcred
,
1413 .crbind
= rpcauth_generic_bind_cred
,
1414 .crmatch
= gss_match
,
1415 .crmarshal
= gss_marshal
,
1416 .crrefresh
= gss_refresh_null
,
1417 .crvalidate
= gss_validate
,
1418 .crwrap_req
= gss_wrap_req
,
1419 .crunwrap_resp
= gss_unwrap_resp
,
1422 static struct rpc_pipe_ops gss_upcall_ops
= {
1423 .upcall
= gss_pipe_upcall
,
1424 .downcall
= gss_pipe_downcall
,
1425 .destroy_msg
= gss_pipe_destroy_msg
,
1426 .open_pipe
= gss_pipe_open
,
1427 .release_pipe
= gss_pipe_release
,
1431 * Initialize RPCSEC_GSS module
1433 static int __init
init_rpcsec_gss(void)
1437 err
= rpcauth_register(&authgss_ops
);
1440 err
= gss_svc_init();
1442 goto out_unregister
;
1443 rpc_init_wait_queue(&pipe_version_rpc_waitqueue
, "gss pipe version");
1446 rpcauth_unregister(&authgss_ops
);
1451 static void __exit
exit_rpcsec_gss(void)
1454 rpcauth_unregister(&authgss_ops
);
1457 MODULE_LICENSE("GPL");
1458 module_init(init_rpcsec_gss
)
1459 module_exit(exit_rpcsec_gss
)