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_wait_queue rpc_waitqueue
;
238 wait_queue_head_t waitqueue
;
239 struct gss_cl_ctx
*ctx
;
242 static int get_pipe_version(void)
246 spin_lock(&pipe_version_lock
);
247 if (pipe_version
>= 0) {
248 atomic_inc(&pipe_users
);
252 spin_unlock(&pipe_version_lock
);
256 static void put_pipe_version(void)
258 if (atomic_dec_and_lock(&pipe_users
, &pipe_version_lock
)) {
260 spin_unlock(&pipe_version_lock
);
265 gss_release_msg(struct gss_upcall_msg
*gss_msg
)
267 if (!atomic_dec_and_test(&gss_msg
->count
))
270 BUG_ON(!list_empty(&gss_msg
->list
));
271 if (gss_msg
->ctx
!= NULL
)
272 gss_put_ctx(gss_msg
->ctx
);
273 rpc_destroy_wait_queue(&gss_msg
->rpc_waitqueue
);
277 static struct gss_upcall_msg
*
278 __gss_find_upcall(struct rpc_inode
*rpci
, uid_t uid
)
280 struct gss_upcall_msg
*pos
;
281 list_for_each_entry(pos
, &rpci
->in_downcall
, list
) {
284 atomic_inc(&pos
->count
);
285 dprintk("RPC: gss_find_upcall found msg %p\n", pos
);
288 dprintk("RPC: gss_find_upcall found nothing\n");
292 /* Try to add an upcall to the pipefs queue.
293 * If an upcall owned by our uid already exists, then we return a reference
294 * to that upcall instead of adding the new upcall.
296 static inline struct gss_upcall_msg
*
297 gss_add_msg(struct gss_auth
*gss_auth
, struct gss_upcall_msg
*gss_msg
)
299 struct inode
*inode
= gss_auth
->dentry
->d_inode
;
300 struct rpc_inode
*rpci
= RPC_I(inode
);
301 struct gss_upcall_msg
*old
;
303 spin_lock(&inode
->i_lock
);
304 old
= __gss_find_upcall(rpci
, gss_msg
->uid
);
306 atomic_inc(&gss_msg
->count
);
307 list_add(&gss_msg
->list
, &rpci
->in_downcall
);
310 spin_unlock(&inode
->i_lock
);
315 __gss_unhash_msg(struct gss_upcall_msg
*gss_msg
)
317 list_del_init(&gss_msg
->list
);
318 rpc_wake_up_status(&gss_msg
->rpc_waitqueue
, gss_msg
->msg
.errno
);
319 wake_up_all(&gss_msg
->waitqueue
);
320 atomic_dec(&gss_msg
->count
);
324 gss_unhash_msg(struct gss_upcall_msg
*gss_msg
)
326 struct gss_auth
*gss_auth
= gss_msg
->auth
;
327 struct inode
*inode
= gss_auth
->dentry
->d_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
->auth
->dentry
->d_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 INIT_LIST_HEAD(&gss_msg
->list
);
371 rpc_init_wait_queue(&gss_msg
->rpc_waitqueue
, "RPCSEC_GSS upcall waitq");
372 init_waitqueue_head(&gss_msg
->waitqueue
);
373 atomic_set(&gss_msg
->count
, 1);
374 gss_msg
->msg
.data
= &gss_msg
->uid
;
375 gss_msg
->msg
.len
= sizeof(gss_msg
->uid
);
377 gss_msg
->auth
= gss_auth
;
381 static struct gss_upcall_msg
*
382 gss_setup_upcall(struct rpc_clnt
*clnt
, struct gss_auth
*gss_auth
, struct rpc_cred
*cred
)
384 struct gss_cred
*gss_cred
= container_of(cred
,
385 struct gss_cred
, gc_base
);
386 struct gss_upcall_msg
*gss_new
, *gss_msg
;
387 uid_t uid
= cred
->cr_uid
;
389 /* Special case: rpc.gssd assumes that uid == 0 implies machine creds */
390 if (gss_cred
->gc_machine_cred
!= 0)
393 gss_new
= gss_alloc_msg(gss_auth
, uid
);
396 gss_msg
= gss_add_msg(gss_auth
, gss_new
);
397 if (gss_msg
== gss_new
) {
398 int res
= rpc_queue_upcall(gss_auth
->dentry
->d_inode
, &gss_new
->msg
);
400 gss_unhash_msg(gss_new
);
401 gss_msg
= ERR_PTR(res
);
404 gss_release_msg(gss_new
);
408 static void warn_gssd(void)
410 static unsigned long ratelimit
;
411 unsigned long now
= jiffies
;
413 if (time_after(now
, ratelimit
)) {
414 printk(KERN_WARNING
"RPC: AUTH_GSS upcall timed out.\n"
415 "Please check user daemon is running.\n");
416 ratelimit
= now
+ 15*HZ
;
421 gss_refresh_upcall(struct rpc_task
*task
)
423 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
424 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
,
425 struct gss_auth
, rpc_auth
);
426 struct gss_cred
*gss_cred
= container_of(cred
,
427 struct gss_cred
, gc_base
);
428 struct gss_upcall_msg
*gss_msg
;
429 struct inode
*inode
= gss_auth
->dentry
->d_inode
;
432 dprintk("RPC: %5u gss_refresh_upcall for uid %u\n", task
->tk_pid
,
434 gss_msg
= gss_setup_upcall(task
->tk_client
, gss_auth
, cred
);
435 if (IS_ERR(gss_msg
) == -EAGAIN
) {
436 /* XXX: warning on the first, under the assumption we
437 * shouldn't normally hit this case on a refresh. */
439 task
->tk_timeout
= 15*HZ
;
440 rpc_sleep_on(&pipe_version_rpc_waitqueue
, task
, NULL
);
443 if (IS_ERR(gss_msg
)) {
444 err
= PTR_ERR(gss_msg
);
447 spin_lock(&inode
->i_lock
);
448 if (gss_cred
->gc_upcall
!= NULL
)
449 rpc_sleep_on(&gss_cred
->gc_upcall
->rpc_waitqueue
, task
, NULL
);
450 else if (gss_msg
->ctx
!= NULL
) {
451 gss_cred_set_ctx(task
->tk_msg
.rpc_cred
, gss_msg
->ctx
);
452 gss_cred
->gc_upcall
= NULL
;
453 rpc_wake_up_status(&gss_msg
->rpc_waitqueue
, gss_msg
->msg
.errno
);
454 } else if (gss_msg
->msg
.errno
>= 0) {
455 task
->tk_timeout
= 0;
456 gss_cred
->gc_upcall
= gss_msg
;
457 /* gss_upcall_callback will release the reference to gss_upcall_msg */
458 atomic_inc(&gss_msg
->count
);
459 rpc_sleep_on(&gss_msg
->rpc_waitqueue
, task
, gss_upcall_callback
);
461 err
= gss_msg
->msg
.errno
;
462 spin_unlock(&inode
->i_lock
);
463 gss_release_msg(gss_msg
);
465 dprintk("RPC: %5u gss_refresh_upcall for uid %u result %d\n",
466 task
->tk_pid
, cred
->cr_uid
, err
);
471 gss_create_upcall(struct gss_auth
*gss_auth
, struct gss_cred
*gss_cred
)
473 struct inode
*inode
= gss_auth
->dentry
->d_inode
;
474 struct rpc_cred
*cred
= &gss_cred
->gc_base
;
475 struct gss_upcall_msg
*gss_msg
;
479 dprintk("RPC: gss_upcall for uid %u\n", cred
->cr_uid
);
481 gss_msg
= gss_setup_upcall(gss_auth
->client
, gss_auth
, cred
);
482 if (PTR_ERR(gss_msg
) == -EAGAIN
) {
483 err
= wait_event_interruptible_timeout(pipe_version_waitqueue
,
484 pipe_version
>= 0, 15*HZ
);
487 if (pipe_version
< 0)
491 if (IS_ERR(gss_msg
)) {
492 err
= PTR_ERR(gss_msg
);
496 prepare_to_wait(&gss_msg
->waitqueue
, &wait
, TASK_INTERRUPTIBLE
);
497 spin_lock(&inode
->i_lock
);
498 if (gss_msg
->ctx
!= NULL
|| gss_msg
->msg
.errno
< 0) {
501 spin_unlock(&inode
->i_lock
);
509 gss_cred_set_ctx(cred
, gss_msg
->ctx
);
511 err
= gss_msg
->msg
.errno
;
512 spin_unlock(&inode
->i_lock
);
514 finish_wait(&gss_msg
->waitqueue
, &wait
);
515 gss_release_msg(gss_msg
);
517 dprintk("RPC: gss_create_upcall for uid %u result %d\n",
523 gss_pipe_upcall(struct file
*filp
, struct rpc_pipe_msg
*msg
,
524 char __user
*dst
, size_t buflen
)
526 char *data
= (char *)msg
->data
+ msg
->copied
;
527 size_t mlen
= min(msg
->len
, buflen
);
530 left
= copy_to_user(dst
, data
, mlen
);
532 msg
->errno
= -EFAULT
;
542 #define MSG_BUF_MAXSIZE 1024
545 gss_pipe_downcall(struct file
*filp
, const char __user
*src
, size_t mlen
)
549 struct gss_upcall_msg
*gss_msg
;
550 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
551 struct gss_cl_ctx
*ctx
;
553 ssize_t err
= -EFBIG
;
555 if (mlen
> MSG_BUF_MAXSIZE
)
558 buf
= kmalloc(mlen
, GFP_NOFS
);
563 if (copy_from_user(buf
, src
, mlen
))
566 end
= (const void *)((char *)buf
+ mlen
);
567 p
= simple_get_bytes(buf
, end
, &uid
, sizeof(uid
));
574 ctx
= gss_alloc_context();
579 /* Find a matching upcall */
580 spin_lock(&inode
->i_lock
);
581 gss_msg
= __gss_find_upcall(RPC_I(inode
), uid
);
582 if (gss_msg
== NULL
) {
583 spin_unlock(&inode
->i_lock
);
586 list_del_init(&gss_msg
->list
);
587 spin_unlock(&inode
->i_lock
);
589 p
= gss_fill_context(p
, end
, ctx
, gss_msg
->auth
->mech
);
592 gss_msg
->msg
.errno
= (err
== -EAGAIN
) ? -EAGAIN
: -EACCES
;
593 goto err_release_msg
;
595 gss_msg
->ctx
= gss_get_ctx(ctx
);
599 spin_lock(&inode
->i_lock
);
600 __gss_unhash_msg(gss_msg
);
601 spin_unlock(&inode
->i_lock
);
602 gss_release_msg(gss_msg
);
608 dprintk("RPC: gss_pipe_downcall returning %Zd\n", err
);
613 gss_pipe_open(struct inode
*inode
)
615 spin_lock(&pipe_version_lock
);
616 if (pipe_version
< 0) {
618 rpc_wake_up(&pipe_version_rpc_waitqueue
);
619 wake_up(&pipe_version_waitqueue
);
621 atomic_inc(&pipe_users
);
622 spin_unlock(&pipe_version_lock
);
627 gss_pipe_release(struct inode
*inode
)
629 struct rpc_inode
*rpci
= RPC_I(inode
);
630 struct gss_upcall_msg
*gss_msg
;
632 spin_lock(&inode
->i_lock
);
633 while (!list_empty(&rpci
->in_downcall
)) {
635 gss_msg
= list_entry(rpci
->in_downcall
.next
,
636 struct gss_upcall_msg
, list
);
637 gss_msg
->msg
.errno
= -EPIPE
;
638 atomic_inc(&gss_msg
->count
);
639 __gss_unhash_msg(gss_msg
);
640 spin_unlock(&inode
->i_lock
);
641 gss_release_msg(gss_msg
);
642 spin_lock(&inode
->i_lock
);
644 spin_unlock(&inode
->i_lock
);
650 gss_pipe_destroy_msg(struct rpc_pipe_msg
*msg
)
652 struct gss_upcall_msg
*gss_msg
= container_of(msg
, struct gss_upcall_msg
, msg
);
654 if (msg
->errno
< 0) {
655 dprintk("RPC: gss_pipe_destroy_msg releasing msg %p\n",
657 atomic_inc(&gss_msg
->count
);
658 gss_unhash_msg(gss_msg
);
659 if (msg
->errno
== -ETIMEDOUT
)
661 gss_release_msg(gss_msg
);
666 * NOTE: we have the opportunity to use different
667 * parameters based on the input flavor (which must be a pseudoflavor)
669 static struct rpc_auth
*
670 gss_create(struct rpc_clnt
*clnt
, rpc_authflavor_t flavor
)
672 struct gss_auth
*gss_auth
;
673 struct rpc_auth
* auth
;
674 int err
= -ENOMEM
; /* XXX? */
676 dprintk("RPC: creating GSS authenticator for client %p\n", clnt
);
678 if (!try_module_get(THIS_MODULE
))
680 if (!(gss_auth
= kmalloc(sizeof(*gss_auth
), GFP_KERNEL
)))
682 gss_auth
->client
= clnt
;
684 gss_auth
->mech
= gss_mech_get_by_pseudoflavor(flavor
);
685 if (!gss_auth
->mech
) {
686 printk(KERN_WARNING
"%s: Pseudoflavor %d not found!\n",
690 gss_auth
->service
= gss_pseudoflavor_to_service(gss_auth
->mech
, flavor
);
691 if (gss_auth
->service
== 0)
693 auth
= &gss_auth
->rpc_auth
;
694 auth
->au_cslack
= GSS_CRED_SLACK
>> 2;
695 auth
->au_rslack
= GSS_VERF_SLACK
>> 2;
696 auth
->au_ops
= &authgss_ops
;
697 auth
->au_flavor
= flavor
;
698 atomic_set(&auth
->au_count
, 1);
699 kref_init(&gss_auth
->kref
);
701 gss_auth
->dentry
= rpc_mkpipe(clnt
->cl_dentry
, gss_auth
->mech
->gm_name
,
702 clnt
, &gss_upcall_ops
, RPC_PIPE_WAIT_FOR_OPEN
);
703 if (IS_ERR(gss_auth
->dentry
)) {
704 err
= PTR_ERR(gss_auth
->dentry
);
708 err
= rpcauth_init_credcache(auth
);
710 goto err_unlink_pipe
;
714 rpc_unlink(gss_auth
->dentry
);
716 gss_mech_put(gss_auth
->mech
);
720 module_put(THIS_MODULE
);
725 gss_free(struct gss_auth
*gss_auth
)
727 rpc_unlink(gss_auth
->dentry
);
728 gss_mech_put(gss_auth
->mech
);
731 module_put(THIS_MODULE
);
735 gss_free_callback(struct kref
*kref
)
737 struct gss_auth
*gss_auth
= container_of(kref
, struct gss_auth
, kref
);
743 gss_destroy(struct rpc_auth
*auth
)
745 struct gss_auth
*gss_auth
;
747 dprintk("RPC: destroying GSS authenticator %p flavor %d\n",
748 auth
, auth
->au_flavor
);
750 rpcauth_destroy_credcache(auth
);
752 gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
753 kref_put(&gss_auth
->kref
, gss_free_callback
);
757 * gss_destroying_context will cause the RPCSEC_GSS to send a NULL RPC call
758 * to the server with the GSS control procedure field set to
759 * RPC_GSS_PROC_DESTROY. This should normally cause the server to release
760 * all RPCSEC_GSS state associated with that context.
763 gss_destroying_context(struct rpc_cred
*cred
)
765 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
766 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
, struct gss_auth
, rpc_auth
);
767 struct rpc_task
*task
;
769 if (gss_cred
->gc_ctx
== NULL
||
770 test_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
) == 0)
773 gss_cred
->gc_ctx
->gc_proc
= RPC_GSS_PROC_DESTROY
;
774 cred
->cr_ops
= &gss_nullops
;
776 /* Take a reference to ensure the cred will be destroyed either
777 * by the RPC call or by the put_rpccred() below */
780 task
= rpc_call_null(gss_auth
->client
, cred
, RPC_TASK_ASYNC
|RPC_TASK_SOFT
);
788 /* gss_destroy_cred (and gss_free_ctx) are used to clean up after failure
789 * to create a new cred or context, so they check that things have been
790 * allocated before freeing them. */
792 gss_do_free_ctx(struct gss_cl_ctx
*ctx
)
794 dprintk("RPC: gss_free_ctx\n");
796 kfree(ctx
->gc_wire_ctx
.data
);
801 gss_free_ctx_callback(struct rcu_head
*head
)
803 struct gss_cl_ctx
*ctx
= container_of(head
, struct gss_cl_ctx
, gc_rcu
);
804 gss_do_free_ctx(ctx
);
808 gss_free_ctx(struct gss_cl_ctx
*ctx
)
810 struct gss_ctx
*gc_gss_ctx
;
812 gc_gss_ctx
= rcu_dereference(ctx
->gc_gss_ctx
);
813 rcu_assign_pointer(ctx
->gc_gss_ctx
, NULL
);
814 call_rcu(&ctx
->gc_rcu
, gss_free_ctx_callback
);
816 gss_delete_sec_context(&gc_gss_ctx
);
820 gss_free_cred(struct gss_cred
*gss_cred
)
822 dprintk("RPC: gss_free_cred %p\n", gss_cred
);
827 gss_free_cred_callback(struct rcu_head
*head
)
829 struct gss_cred
*gss_cred
= container_of(head
, struct gss_cred
, gc_base
.cr_rcu
);
830 gss_free_cred(gss_cred
);
834 gss_destroy_nullcred(struct rpc_cred
*cred
)
836 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
, gc_base
);
837 struct gss_auth
*gss_auth
= container_of(cred
->cr_auth
, struct gss_auth
, rpc_auth
);
838 struct gss_cl_ctx
*ctx
= gss_cred
->gc_ctx
;
840 rcu_assign_pointer(gss_cred
->gc_ctx
, NULL
);
841 call_rcu(&cred
->cr_rcu
, gss_free_cred_callback
);
844 kref_put(&gss_auth
->kref
, gss_free_callback
);
848 gss_destroy_cred(struct rpc_cred
*cred
)
851 if (gss_destroying_context(cred
))
853 gss_destroy_nullcred(cred
);
857 * Lookup RPCSEC_GSS cred for the current process
859 static struct rpc_cred
*
860 gss_lookup_cred(struct rpc_auth
*auth
, struct auth_cred
*acred
, int flags
)
862 return rpcauth_lookup_credcache(auth
, acred
, flags
);
865 static struct rpc_cred
*
866 gss_create_cred(struct rpc_auth
*auth
, struct auth_cred
*acred
, int flags
)
868 struct gss_auth
*gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
869 struct gss_cred
*cred
= NULL
;
872 dprintk("RPC: gss_create_cred for uid %d, flavor %d\n",
873 acred
->uid
, auth
->au_flavor
);
875 if (!(cred
= kzalloc(sizeof(*cred
), GFP_NOFS
)))
878 rpcauth_init_cred(&cred
->gc_base
, acred
, auth
, &gss_credops
);
880 * Note: in order to force a call to call_refresh(), we deliberately
881 * fail to flag the credential as RPCAUTH_CRED_UPTODATE.
883 cred
->gc_base
.cr_flags
= 1UL << RPCAUTH_CRED_NEW
;
884 cred
->gc_service
= gss_auth
->service
;
885 cred
->gc_machine_cred
= acred
->machine_cred
;
886 kref_get(&gss_auth
->kref
);
887 return &cred
->gc_base
;
890 dprintk("RPC: gss_create_cred failed with error %d\n", err
);
895 gss_cred_init(struct rpc_auth
*auth
, struct rpc_cred
*cred
)
897 struct gss_auth
*gss_auth
= container_of(auth
, struct gss_auth
, rpc_auth
);
898 struct gss_cred
*gss_cred
= container_of(cred
,struct gss_cred
, gc_base
);
902 err
= gss_create_upcall(gss_auth
, gss_cred
);
903 } while (err
== -EAGAIN
);
908 gss_match(struct auth_cred
*acred
, struct rpc_cred
*rc
, int flags
)
910 struct gss_cred
*gss_cred
= container_of(rc
, struct gss_cred
, gc_base
);
912 if (test_bit(RPCAUTH_CRED_NEW
, &rc
->cr_flags
))
914 /* Don't match with creds that have expired. */
915 if (time_after(jiffies
, gss_cred
->gc_ctx
->gc_expiry
))
917 if (!test_bit(RPCAUTH_CRED_UPTODATE
, &rc
->cr_flags
))
920 if (acred
->machine_cred
!= gss_cred
->gc_machine_cred
)
922 return (rc
->cr_uid
== acred
->uid
);
926 * Marshal credentials.
927 * Maybe we should keep a cached credential for performance reasons.
930 gss_marshal(struct rpc_task
*task
, __be32
*p
)
932 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
933 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
935 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
937 struct rpc_rqst
*req
= task
->tk_rqstp
;
939 struct xdr_netobj mic
;
941 struct xdr_buf verf_buf
;
943 dprintk("RPC: %5u gss_marshal\n", task
->tk_pid
);
945 *p
++ = htonl(RPC_AUTH_GSS
);
948 spin_lock(&ctx
->gc_seq_lock
);
949 req
->rq_seqno
= ctx
->gc_seq
++;
950 spin_unlock(&ctx
->gc_seq_lock
);
952 *p
++ = htonl((u32
) RPC_GSS_VERSION
);
953 *p
++ = htonl((u32
) ctx
->gc_proc
);
954 *p
++ = htonl((u32
) req
->rq_seqno
);
955 *p
++ = htonl((u32
) gss_cred
->gc_service
);
956 p
= xdr_encode_netobj(p
, &ctx
->gc_wire_ctx
);
957 *cred_len
= htonl((p
- (cred_len
+ 1)) << 2);
959 /* We compute the checksum for the verifier over the xdr-encoded bytes
960 * starting with the xid and ending at the end of the credential: */
961 iov
.iov_base
= xprt_skip_transport_header(task
->tk_xprt
,
962 req
->rq_snd_buf
.head
[0].iov_base
);
963 iov
.iov_len
= (u8
*)p
- (u8
*)iov
.iov_base
;
964 xdr_buf_from_iov(&iov
, &verf_buf
);
966 /* set verifier flavor*/
967 *p
++ = htonl(RPC_AUTH_GSS
);
969 mic
.data
= (u8
*)(p
+ 1);
970 maj_stat
= gss_get_mic(ctx
->gc_gss_ctx
, &verf_buf
, &mic
);
971 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
) {
972 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
973 } else if (maj_stat
!= 0) {
974 printk("gss_marshal: gss_get_mic FAILED (%d)\n", maj_stat
);
977 p
= xdr_encode_opaque(p
, NULL
, mic
.len
);
985 static int gss_renew_cred(struct rpc_task
*task
)
987 struct rpc_cred
*oldcred
= task
->tk_msg
.rpc_cred
;
988 struct gss_cred
*gss_cred
= container_of(oldcred
,
991 struct rpc_auth
*auth
= oldcred
->cr_auth
;
992 struct auth_cred acred
= {
993 .uid
= oldcred
->cr_uid
,
994 .machine_cred
= gss_cred
->gc_machine_cred
,
996 struct rpc_cred
*new;
998 new = gss_lookup_cred(auth
, &acred
, RPCAUTH_LOOKUP_NEW
);
1000 return PTR_ERR(new);
1001 task
->tk_msg
.rpc_cred
= new;
1002 put_rpccred(oldcred
);
1007 * Refresh credentials. XXX - finish
1010 gss_refresh(struct rpc_task
*task
)
1012 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1015 if (!test_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
) &&
1016 !test_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
)) {
1017 ret
= gss_renew_cred(task
);
1020 cred
= task
->tk_msg
.rpc_cred
;
1023 if (test_bit(RPCAUTH_CRED_NEW
, &cred
->cr_flags
))
1024 ret
= gss_refresh_upcall(task
);
1029 /* Dummy refresh routine: used only when destroying the context */
1031 gss_refresh_null(struct rpc_task
*task
)
1037 gss_validate(struct rpc_task
*task
, __be32
*p
)
1039 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1040 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1043 struct xdr_buf verf_buf
;
1044 struct xdr_netobj mic
;
1048 dprintk("RPC: %5u gss_validate\n", task
->tk_pid
);
1051 if ((len
= ntohl(*p
++)) > RPC_MAX_AUTH_SIZE
)
1053 if (flav
!= RPC_AUTH_GSS
)
1055 seq
= htonl(task
->tk_rqstp
->rq_seqno
);
1056 iov
.iov_base
= &seq
;
1057 iov
.iov_len
= sizeof(seq
);
1058 xdr_buf_from_iov(&iov
, &verf_buf
);
1062 maj_stat
= gss_verify_mic(ctx
->gc_gss_ctx
, &verf_buf
, &mic
);
1063 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1064 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1066 dprintk("RPC: %5u gss_validate: gss_verify_mic returned "
1067 "error 0x%08x\n", task
->tk_pid
, maj_stat
);
1070 /* We leave it to unwrap to calculate au_rslack. For now we just
1071 * calculate the length of the verifier: */
1072 cred
->cr_auth
->au_verfsize
= XDR_QUADLEN(len
) + 2;
1074 dprintk("RPC: %5u gss_validate: gss_verify_mic succeeded.\n",
1076 return p
+ XDR_QUADLEN(len
);
1079 dprintk("RPC: %5u gss_validate failed.\n", task
->tk_pid
);
1084 gss_wrap_req_integ(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1085 kxdrproc_t encode
, struct rpc_rqst
*rqstp
, __be32
*p
, void *obj
)
1087 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1088 struct xdr_buf integ_buf
;
1089 __be32
*integ_len
= NULL
;
1090 struct xdr_netobj mic
;
1098 offset
= (u8
*)p
- (u8
*)snd_buf
->head
[0].iov_base
;
1099 *p
++ = htonl(rqstp
->rq_seqno
);
1101 status
= encode(rqstp
, p
, obj
);
1105 if (xdr_buf_subsegment(snd_buf
, &integ_buf
,
1106 offset
, snd_buf
->len
- offset
))
1108 *integ_len
= htonl(integ_buf
.len
);
1110 /* guess whether we're in the head or the tail: */
1111 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
)
1112 iov
= snd_buf
->tail
;
1114 iov
= snd_buf
->head
;
1115 p
= iov
->iov_base
+ iov
->iov_len
;
1116 mic
.data
= (u8
*)(p
+ 1);
1118 maj_stat
= gss_get_mic(ctx
->gc_gss_ctx
, &integ_buf
, &mic
);
1119 status
= -EIO
; /* XXX? */
1120 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1121 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1124 q
= xdr_encode_opaque(p
, NULL
, mic
.len
);
1126 offset
= (u8
*)q
- (u8
*)p
;
1127 iov
->iov_len
+= offset
;
1128 snd_buf
->len
+= offset
;
1133 priv_release_snd_buf(struct rpc_rqst
*rqstp
)
1137 for (i
=0; i
< rqstp
->rq_enc_pages_num
; i
++)
1138 __free_page(rqstp
->rq_enc_pages
[i
]);
1139 kfree(rqstp
->rq_enc_pages
);
1143 alloc_enc_pages(struct rpc_rqst
*rqstp
)
1145 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1148 if (snd_buf
->page_len
== 0) {
1149 rqstp
->rq_enc_pages_num
= 0;
1153 first
= snd_buf
->page_base
>> PAGE_CACHE_SHIFT
;
1154 last
= (snd_buf
->page_base
+ snd_buf
->page_len
- 1) >> PAGE_CACHE_SHIFT
;
1155 rqstp
->rq_enc_pages_num
= last
- first
+ 1 + 1;
1157 = kmalloc(rqstp
->rq_enc_pages_num
* sizeof(struct page
*),
1159 if (!rqstp
->rq_enc_pages
)
1161 for (i
=0; i
< rqstp
->rq_enc_pages_num
; i
++) {
1162 rqstp
->rq_enc_pages
[i
] = alloc_page(GFP_NOFS
);
1163 if (rqstp
->rq_enc_pages
[i
] == NULL
)
1166 rqstp
->rq_release_snd_buf
= priv_release_snd_buf
;
1169 for (i
--; i
>= 0; i
--) {
1170 __free_page(rqstp
->rq_enc_pages
[i
]);
1177 gss_wrap_req_priv(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1178 kxdrproc_t encode
, struct rpc_rqst
*rqstp
, __be32
*p
, void *obj
)
1180 struct xdr_buf
*snd_buf
= &rqstp
->rq_snd_buf
;
1185 struct page
**inpages
;
1192 offset
= (u8
*)p
- (u8
*)snd_buf
->head
[0].iov_base
;
1193 *p
++ = htonl(rqstp
->rq_seqno
);
1195 status
= encode(rqstp
, p
, obj
);
1199 status
= alloc_enc_pages(rqstp
);
1202 first
= snd_buf
->page_base
>> PAGE_CACHE_SHIFT
;
1203 inpages
= snd_buf
->pages
+ first
;
1204 snd_buf
->pages
= rqstp
->rq_enc_pages
;
1205 snd_buf
->page_base
-= first
<< PAGE_CACHE_SHIFT
;
1206 /* Give the tail its own page, in case we need extra space in the
1207 * head when wrapping: */
1208 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
) {
1209 tmp
= page_address(rqstp
->rq_enc_pages
[rqstp
->rq_enc_pages_num
- 1]);
1210 memcpy(tmp
, snd_buf
->tail
[0].iov_base
, snd_buf
->tail
[0].iov_len
);
1211 snd_buf
->tail
[0].iov_base
= tmp
;
1213 maj_stat
= gss_wrap(ctx
->gc_gss_ctx
, offset
, snd_buf
, inpages
);
1214 /* RPC_SLACK_SPACE should prevent this ever happening: */
1215 BUG_ON(snd_buf
->len
> snd_buf
->buflen
);
1217 /* We're assuming that when GSS_S_CONTEXT_EXPIRED, the encryption was
1218 * done anyway, so it's safe to put the request on the wire: */
1219 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1220 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1224 *opaque_len
= htonl(snd_buf
->len
- offset
);
1225 /* guess whether we're in the head or the tail: */
1226 if (snd_buf
->page_len
|| snd_buf
->tail
[0].iov_len
)
1227 iov
= snd_buf
->tail
;
1229 iov
= snd_buf
->head
;
1230 p
= iov
->iov_base
+ iov
->iov_len
;
1231 pad
= 3 - ((snd_buf
->len
- offset
- 1) & 3);
1233 iov
->iov_len
+= pad
;
1234 snd_buf
->len
+= pad
;
1240 gss_wrap_req(struct rpc_task
*task
,
1241 kxdrproc_t encode
, void *rqstp
, __be32
*p
, void *obj
)
1243 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1244 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
1246 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1249 dprintk("RPC: %5u gss_wrap_req\n", task
->tk_pid
);
1250 if (ctx
->gc_proc
!= RPC_GSS_PROC_DATA
) {
1251 /* The spec seems a little ambiguous here, but I think that not
1252 * wrapping context destruction requests makes the most sense.
1254 status
= encode(rqstp
, p
, obj
);
1257 switch (gss_cred
->gc_service
) {
1258 case RPC_GSS_SVC_NONE
:
1259 status
= encode(rqstp
, p
, obj
);
1261 case RPC_GSS_SVC_INTEGRITY
:
1262 status
= gss_wrap_req_integ(cred
, ctx
, encode
,
1265 case RPC_GSS_SVC_PRIVACY
:
1266 status
= gss_wrap_req_priv(cred
, ctx
, encode
,
1272 dprintk("RPC: %5u gss_wrap_req returning %d\n", task
->tk_pid
, status
);
1277 gss_unwrap_resp_integ(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1278 struct rpc_rqst
*rqstp
, __be32
**p
)
1280 struct xdr_buf
*rcv_buf
= &rqstp
->rq_rcv_buf
;
1281 struct xdr_buf integ_buf
;
1282 struct xdr_netobj mic
;
1283 u32 data_offset
, mic_offset
;
1288 integ_len
= ntohl(*(*p
)++);
1291 data_offset
= (u8
*)(*p
) - (u8
*)rcv_buf
->head
[0].iov_base
;
1292 mic_offset
= integ_len
+ data_offset
;
1293 if (mic_offset
> rcv_buf
->len
)
1295 if (ntohl(*(*p
)++) != rqstp
->rq_seqno
)
1298 if (xdr_buf_subsegment(rcv_buf
, &integ_buf
, data_offset
,
1299 mic_offset
- data_offset
))
1302 if (xdr_buf_read_netobj(rcv_buf
, &mic
, mic_offset
))
1305 maj_stat
= gss_verify_mic(ctx
->gc_gss_ctx
, &integ_buf
, &mic
);
1306 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1307 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1308 if (maj_stat
!= GSS_S_COMPLETE
)
1314 gss_unwrap_resp_priv(struct rpc_cred
*cred
, struct gss_cl_ctx
*ctx
,
1315 struct rpc_rqst
*rqstp
, __be32
**p
)
1317 struct xdr_buf
*rcv_buf
= &rqstp
->rq_rcv_buf
;
1323 opaque_len
= ntohl(*(*p
)++);
1324 offset
= (u8
*)(*p
) - (u8
*)rcv_buf
->head
[0].iov_base
;
1325 if (offset
+ opaque_len
> rcv_buf
->len
)
1327 /* remove padding: */
1328 rcv_buf
->len
= offset
+ opaque_len
;
1330 maj_stat
= gss_unwrap(ctx
->gc_gss_ctx
, offset
, rcv_buf
);
1331 if (maj_stat
== GSS_S_CONTEXT_EXPIRED
)
1332 clear_bit(RPCAUTH_CRED_UPTODATE
, &cred
->cr_flags
);
1333 if (maj_stat
!= GSS_S_COMPLETE
)
1335 if (ntohl(*(*p
)++) != rqstp
->rq_seqno
)
1343 gss_unwrap_resp(struct rpc_task
*task
,
1344 kxdrproc_t decode
, void *rqstp
, __be32
*p
, void *obj
)
1346 struct rpc_cred
*cred
= task
->tk_msg
.rpc_cred
;
1347 struct gss_cred
*gss_cred
= container_of(cred
, struct gss_cred
,
1349 struct gss_cl_ctx
*ctx
= gss_cred_get_ctx(cred
);
1351 struct kvec
*head
= ((struct rpc_rqst
*)rqstp
)->rq_rcv_buf
.head
;
1352 int savedlen
= head
->iov_len
;
1355 if (ctx
->gc_proc
!= RPC_GSS_PROC_DATA
)
1357 switch (gss_cred
->gc_service
) {
1358 case RPC_GSS_SVC_NONE
:
1360 case RPC_GSS_SVC_INTEGRITY
:
1361 status
= gss_unwrap_resp_integ(cred
, ctx
, rqstp
, &p
);
1365 case RPC_GSS_SVC_PRIVACY
:
1366 status
= gss_unwrap_resp_priv(cred
, ctx
, rqstp
, &p
);
1371 /* take into account extra slack for integrity and privacy cases: */
1372 cred
->cr_auth
->au_rslack
= cred
->cr_auth
->au_verfsize
+ (p
- savedp
)
1373 + (savedlen
- head
->iov_len
);
1375 status
= decode(rqstp
, p
, obj
);
1378 dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task
->tk_pid
,
1383 static const struct rpc_authops authgss_ops
= {
1384 .owner
= THIS_MODULE
,
1385 .au_flavor
= RPC_AUTH_GSS
,
1386 .au_name
= "RPCSEC_GSS",
1387 .create
= gss_create
,
1388 .destroy
= gss_destroy
,
1389 .lookup_cred
= gss_lookup_cred
,
1390 .crcreate
= gss_create_cred
1393 static const struct rpc_credops gss_credops
= {
1394 .cr_name
= "AUTH_GSS",
1395 .crdestroy
= gss_destroy_cred
,
1396 .cr_init
= gss_cred_init
,
1397 .crbind
= rpcauth_generic_bind_cred
,
1398 .crmatch
= gss_match
,
1399 .crmarshal
= gss_marshal
,
1400 .crrefresh
= gss_refresh
,
1401 .crvalidate
= gss_validate
,
1402 .crwrap_req
= gss_wrap_req
,
1403 .crunwrap_resp
= gss_unwrap_resp
,
1406 static const struct rpc_credops gss_nullops
= {
1407 .cr_name
= "AUTH_GSS",
1408 .crdestroy
= gss_destroy_nullcred
,
1409 .crbind
= rpcauth_generic_bind_cred
,
1410 .crmatch
= gss_match
,
1411 .crmarshal
= gss_marshal
,
1412 .crrefresh
= gss_refresh_null
,
1413 .crvalidate
= gss_validate
,
1414 .crwrap_req
= gss_wrap_req
,
1415 .crunwrap_resp
= gss_unwrap_resp
,
1418 static struct rpc_pipe_ops gss_upcall_ops
= {
1419 .upcall
= gss_pipe_upcall
,
1420 .downcall
= gss_pipe_downcall
,
1421 .destroy_msg
= gss_pipe_destroy_msg
,
1422 .open_pipe
= gss_pipe_open
,
1423 .release_pipe
= gss_pipe_release
,
1427 * Initialize RPCSEC_GSS module
1429 static int __init
init_rpcsec_gss(void)
1433 err
= rpcauth_register(&authgss_ops
);
1436 err
= gss_svc_init();
1438 goto out_unregister
;
1439 rpc_init_wait_queue(&pipe_version_rpc_waitqueue
, "gss pipe version");
1442 rpcauth_unregister(&authgss_ops
);
1447 static void __exit
exit_rpcsec_gss(void)
1450 rpcauth_unregister(&authgss_ops
);
1453 MODULE_LICENSE("GPL");
1454 module_init(init_rpcsec_gss
)
1455 module_exit(exit_rpcsec_gss
)