2 * Modifications for Lustre
4 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
6 * Copyright (c) 2012, Intel Corporation.
8 * Author: Eric Mei <ericm@clusterfs.com>
12 * linux/net/sunrpc/gss_mech_switch.c
14 * Copyright (c) 2001 The Regents of the University of Michigan.
15 * All rights reserved.
17 * J. Bruce Fields <bfields@umich.edu>
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
23 * 1. Redistributions of source code must retain the above copyright
24 * notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 * notice, this list of conditions and the following disclaimer in the
27 * documentation and/or other materials provided with the distribution.
28 * 3. Neither the name of the University nor the names of its
29 * contributors may be used to endorse or promote products derived
30 * from this software without specific prior written permission.
32 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
33 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
34 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
35 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
39 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
40 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
41 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
42 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 #define DEBUG_SUBSYSTEM S_SEC
47 #include <linux/module.h>
48 #include <linux/slab.h>
49 #include <linux/mutex.h>
52 #include <obd_class.h>
53 #include <obd_support.h>
54 #include <lustre/lustre_idl.h>
55 #include <lustre_net.h>
56 #include <lustre_import.h>
57 #include <lustre_sec.h>
60 #include "gss_internal.h"
63 static LIST_HEAD(registered_mechs
);
64 static DEFINE_SPINLOCK(registered_mechs_lock
);
66 int lgss_mech_register(struct gss_api_mech
*gm
)
68 spin_lock(®istered_mechs_lock
);
69 list_add(&gm
->gm_list
, ®istered_mechs
);
70 spin_unlock(®istered_mechs_lock
);
71 CWARN("Register %s mechanism\n", gm
->gm_name
);
75 void lgss_mech_unregister(struct gss_api_mech
*gm
)
77 spin_lock(®istered_mechs_lock
);
78 list_del(&gm
->gm_list
);
79 spin_unlock(®istered_mechs_lock
);
80 CWARN("Unregister %s mechanism\n", gm
->gm_name
);
84 struct gss_api_mech
*lgss_mech_get(struct gss_api_mech
*gm
)
86 __module_get(gm
->gm_owner
);
90 struct gss_api_mech
*lgss_name_to_mech(char *name
)
92 struct gss_api_mech
*pos
, *gm
= NULL
;
94 spin_lock(®istered_mechs_lock
);
95 list_for_each_entry(pos
, ®istered_mechs
, gm_list
) {
96 if (0 == strcmp(name
, pos
->gm_name
)) {
97 if (!try_module_get(pos
->gm_owner
))
103 spin_unlock(®istered_mechs_lock
);
109 int mech_supports_subflavor(struct gss_api_mech
*gm
, __u32 subflavor
)
113 for (i
= 0; i
< gm
->gm_sf_num
; i
++) {
114 if (gm
->gm_sfs
[i
].sf_subflavor
== subflavor
)
120 struct gss_api_mech
*lgss_subflavor_to_mech(__u32 subflavor
)
122 struct gss_api_mech
*pos
, *gm
= NULL
;
124 spin_lock(®istered_mechs_lock
);
125 list_for_each_entry(pos
, ®istered_mechs
, gm_list
) {
126 if (!try_module_get(pos
->gm_owner
))
128 if (!mech_supports_subflavor(pos
, subflavor
)) {
129 module_put(pos
->gm_owner
);
135 spin_unlock(®istered_mechs_lock
);
139 void lgss_mech_put(struct gss_api_mech
*gm
)
141 module_put(gm
->gm_owner
);
144 /* The mech could probably be determined from the token instead, but it's just
145 * as easy for now to pass it in. */
146 __u32
lgss_import_sec_context(rawobj_t
*input_token
,
147 struct gss_api_mech
*mech
,
148 struct gss_ctx
**ctx_id
)
150 OBD_ALLOC_PTR(*ctx_id
);
152 return GSS_S_FAILURE
;
154 (*ctx_id
)->mech_type
= lgss_mech_get(mech
);
157 LASSERT(mech
->gm_ops
);
158 LASSERT(mech
->gm_ops
->gss_import_sec_context
);
159 return mech
->gm_ops
->gss_import_sec_context(input_token
, *ctx_id
);
162 __u32
lgss_copy_reverse_context(struct gss_ctx
*ctx_id
,
163 struct gss_ctx
**ctx_id_new
)
165 struct gss_api_mech
*mech
= ctx_id
->mech_type
;
170 OBD_ALLOC_PTR(*ctx_id_new
);
171 if (*ctx_id_new
== NULL
)
172 return GSS_S_FAILURE
;
174 (*ctx_id_new
)->mech_type
= lgss_mech_get(mech
);
177 LASSERT(mech
->gm_ops
);
178 LASSERT(mech
->gm_ops
->gss_copy_reverse_context
);
180 major
= mech
->gm_ops
->gss_copy_reverse_context(ctx_id
, *ctx_id_new
);
181 if (major
!= GSS_S_COMPLETE
) {
183 OBD_FREE_PTR(*ctx_id_new
);
190 * this interface is much simplified, currently we only need endtime.
192 __u32
lgss_inquire_context(struct gss_ctx
*context_handle
,
193 unsigned long *endtime
)
195 LASSERT(context_handle
);
196 LASSERT(context_handle
->mech_type
);
197 LASSERT(context_handle
->mech_type
->gm_ops
);
198 LASSERT(context_handle
->mech_type
->gm_ops
->gss_inquire_context
);
200 return context_handle
->mech_type
->gm_ops
201 ->gss_inquire_context(context_handle
,
205 /* gss_get_mic: compute a mic over message and return mic_token. */
206 __u32
lgss_get_mic(struct gss_ctx
*context_handle
,
213 LASSERT(context_handle
);
214 LASSERT(context_handle
->mech_type
);
215 LASSERT(context_handle
->mech_type
->gm_ops
);
216 LASSERT(context_handle
->mech_type
->gm_ops
->gss_get_mic
);
218 return context_handle
->mech_type
->gm_ops
219 ->gss_get_mic(context_handle
,
227 /* gss_verify_mic: check whether the provided mic_token verifies message. */
228 __u32
lgss_verify_mic(struct gss_ctx
*context_handle
,
235 LASSERT(context_handle
);
236 LASSERT(context_handle
->mech_type
);
237 LASSERT(context_handle
->mech_type
->gm_ops
);
238 LASSERT(context_handle
->mech_type
->gm_ops
->gss_verify_mic
);
240 return context_handle
->mech_type
->gm_ops
241 ->gss_verify_mic(context_handle
,
249 __u32
lgss_wrap(struct gss_ctx
*context_handle
,
255 LASSERT(context_handle
);
256 LASSERT(context_handle
->mech_type
);
257 LASSERT(context_handle
->mech_type
->gm_ops
);
258 LASSERT(context_handle
->mech_type
->gm_ops
->gss_wrap
);
260 return context_handle
->mech_type
->gm_ops
261 ->gss_wrap(context_handle
, gsshdr
, msg
, msg_buflen
, out_token
);
264 __u32
lgss_unwrap(struct gss_ctx
*context_handle
,
269 LASSERT(context_handle
);
270 LASSERT(context_handle
->mech_type
);
271 LASSERT(context_handle
->mech_type
->gm_ops
);
272 LASSERT(context_handle
->mech_type
->gm_ops
->gss_unwrap
);
274 return context_handle
->mech_type
->gm_ops
275 ->gss_unwrap(context_handle
, gsshdr
, token
, out_msg
);
279 __u32
lgss_prep_bulk(struct gss_ctx
*context_handle
,
280 struct ptlrpc_bulk_desc
*desc
)
282 LASSERT(context_handle
);
283 LASSERT(context_handle
->mech_type
);
284 LASSERT(context_handle
->mech_type
->gm_ops
);
285 LASSERT(context_handle
->mech_type
->gm_ops
->gss_prep_bulk
);
287 return context_handle
->mech_type
->gm_ops
288 ->gss_prep_bulk(context_handle
, desc
);
291 __u32
lgss_wrap_bulk(struct gss_ctx
*context_handle
,
292 struct ptlrpc_bulk_desc
*desc
,
296 LASSERT(context_handle
);
297 LASSERT(context_handle
->mech_type
);
298 LASSERT(context_handle
->mech_type
->gm_ops
);
299 LASSERT(context_handle
->mech_type
->gm_ops
->gss_wrap_bulk
);
301 return context_handle
->mech_type
->gm_ops
302 ->gss_wrap_bulk(context_handle
, desc
, token
, adj_nob
);
305 __u32
lgss_unwrap_bulk(struct gss_ctx
*context_handle
,
306 struct ptlrpc_bulk_desc
*desc
,
310 LASSERT(context_handle
);
311 LASSERT(context_handle
->mech_type
);
312 LASSERT(context_handle
->mech_type
->gm_ops
);
313 LASSERT(context_handle
->mech_type
->gm_ops
->gss_unwrap_bulk
);
315 return context_handle
->mech_type
->gm_ops
316 ->gss_unwrap_bulk(context_handle
, desc
, token
, adj_nob
);
319 /* gss_delete_sec_context: free all resources associated with context_handle.
320 * Note this differs from the RFC 2744-specified prototype in that we don't
321 * bother returning an output token, since it would never be used anyway. */
323 __u32
lgss_delete_sec_context(struct gss_ctx
**context_handle
)
325 struct gss_api_mech
*mech
;
327 CDEBUG(D_SEC
, "deleting %p\n", *context_handle
);
329 if (!*context_handle
)
330 return(GSS_S_NO_CONTEXT
);
332 mech
= (*context_handle
)->mech_type
;
333 if ((*context_handle
)->internal_ctx_id
!= 0) {
335 LASSERT(mech
->gm_ops
);
336 LASSERT(mech
->gm_ops
->gss_delete_sec_context
);
337 mech
->gm_ops
->gss_delete_sec_context(
338 (*context_handle
)->internal_ctx_id
);
343 OBD_FREE_PTR(*context_handle
);
344 *context_handle
=NULL
;
345 return GSS_S_COMPLETE
;
348 int lgss_display(struct gss_ctx
*ctx
,
353 LASSERT(ctx
->mech_type
);
354 LASSERT(ctx
->mech_type
->gm_ops
);
355 LASSERT(ctx
->mech_type
->gm_ops
->gss_display
);
357 return ctx
->mech_type
->gm_ops
->gss_display(ctx
, buf
, bufsize
);
This page took 0.055446 seconds and 5 git commands to generate.