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d15c345f PM |
1 | /* |
2 | * NetLabel Kernel API | |
3 | * | |
4 | * This file defines the kernel API for the NetLabel system. The NetLabel | |
5 | * system manages static and dynamic label mappings for network protocols such | |
6 | * as CIPSO and RIPSO. | |
7 | * | |
8 | * Author: Paul Moore <paul.moore@hp.com> | |
9 | * | |
10 | */ | |
11 | ||
12 | /* | |
13 | * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
23 | * the GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | * | |
29 | */ | |
30 | ||
31 | #include <linux/init.h> | |
32 | #include <linux/types.h> | |
eda61d32 | 33 | #include <linux/audit.h> |
d15c345f PM |
34 | #include <net/ip.h> |
35 | #include <net/netlabel.h> | |
36 | #include <net/cipso_ipv4.h> | |
37 | #include <asm/bug.h> | |
c783f1ce | 38 | #include <asm/atomic.h> |
d15c345f PM |
39 | |
40 | #include "netlabel_domainhash.h" | |
41 | #include "netlabel_unlabeled.h" | |
eda61d32 | 42 | #include "netlabel_cipso_v4.h" |
d15c345f | 43 | #include "netlabel_user.h" |
23bcdc1a | 44 | #include "netlabel_mgmt.h" |
d15c345f | 45 | |
eda61d32 PM |
46 | /* |
47 | * Configuration Functions | |
48 | */ | |
49 | ||
50 | /** | |
51 | * netlbl_cfg_map_del - Remove a NetLabel/LSM domain mapping | |
52 | * @domain: the domain mapping to remove | |
53 | * @audit_info: NetLabel audit information | |
54 | * | |
55 | * Description: | |
56 | * Removes a NetLabel/LSM domain mapping. A @domain value of NULL causes the | |
57 | * default domain mapping to be removed. Returns zero on success, negative | |
58 | * values on failure. | |
59 | * | |
60 | */ | |
61 | int netlbl_cfg_map_del(const char *domain, struct netlbl_audit *audit_info) | |
62 | { | |
63 | return netlbl_domhsh_remove(domain, audit_info); | |
64 | } | |
65 | ||
66 | /** | |
67 | * netlbl_cfg_unlbl_add_map - Add an unlabeled NetLabel/LSM domain mapping | |
68 | * @domain: the domain mapping to add | |
69 | * @audit_info: NetLabel audit information | |
70 | * | |
71 | * Description: | |
72 | * Adds a new unlabeled NetLabel/LSM domain mapping. A @domain value of NULL | |
73 | * causes a new default domain mapping to be added. Returns zero on success, | |
74 | * negative values on failure. | |
75 | * | |
76 | */ | |
77 | int netlbl_cfg_unlbl_add_map(const char *domain, | |
78 | struct netlbl_audit *audit_info) | |
79 | { | |
80 | int ret_val = -ENOMEM; | |
81 | struct netlbl_dom_map *entry; | |
82 | ||
83 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
84 | if (entry == NULL) | |
948a7243 | 85 | return -ENOMEM; |
eda61d32 PM |
86 | if (domain != NULL) { |
87 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
88 | if (entry->domain == NULL) | |
89 | goto cfg_unlbl_add_map_failure; | |
90 | } | |
91 | entry->type = NETLBL_NLTYPE_UNLABELED; | |
92 | ||
93 | ret_val = netlbl_domhsh_add(entry, audit_info); | |
94 | if (ret_val != 0) | |
95 | goto cfg_unlbl_add_map_failure; | |
96 | ||
97 | return 0; | |
98 | ||
99 | cfg_unlbl_add_map_failure: | |
100 | if (entry != NULL) | |
101 | kfree(entry->domain); | |
102 | kfree(entry); | |
103 | return ret_val; | |
104 | } | |
105 | ||
eda61d32 PM |
106 | /** |
107 | * netlbl_cfg_cipsov4_add_map - Add a new CIPSOv4 DOI definition and mapping | |
108 | * @doi_def: the DOI definition | |
109 | * @domain: the domain mapping to add | |
110 | * @audit_info: NetLabel audit information | |
111 | * | |
112 | * Description: | |
113 | * Add a new CIPSOv4 DOI definition and NetLabel/LSM domain mapping for this | |
114 | * new DOI definition to the NetLabel subsystem. A @domain value of NULL adds | |
115 | * a new default domain mapping. Returns zero on success, negative values on | |
116 | * failure. | |
117 | * | |
118 | */ | |
119 | int netlbl_cfg_cipsov4_add_map(struct cipso_v4_doi *doi_def, | |
120 | const char *domain, | |
121 | struct netlbl_audit *audit_info) | |
122 | { | |
123 | int ret_val = -ENOMEM; | |
124 | struct netlbl_dom_map *entry; | |
948a7243 PM |
125 | const char *type_str; |
126 | struct audit_buffer *audit_buf; | |
eda61d32 PM |
127 | |
128 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
129 | if (entry == NULL) | |
948a7243 | 130 | return -ENOMEM; |
eda61d32 PM |
131 | if (domain != NULL) { |
132 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
133 | if (entry->domain == NULL) | |
134 | goto cfg_cipsov4_add_map_failure; | |
135 | } | |
136 | entry->type = NETLBL_NLTYPE_CIPSOV4; | |
137 | entry->type_def.cipsov4 = doi_def; | |
138 | ||
139 | /* Grab a RCU read lock here so nothing happens to the doi_def variable | |
140 | * between adding it to the CIPSOv4 protocol engine and adding a | |
141 | * domain mapping for it. */ | |
142 | ||
143 | rcu_read_lock(); | |
948a7243 | 144 | ret_val = cipso_v4_doi_add(doi_def); |
eda61d32 PM |
145 | if (ret_val != 0) |
146 | goto cfg_cipsov4_add_map_failure_unlock; | |
147 | ret_val = netlbl_domhsh_add(entry, audit_info); | |
148 | if (ret_val != 0) | |
149 | goto cfg_cipsov4_add_map_failure_remove_doi; | |
150 | rcu_read_unlock(); | |
151 | ||
152 | return 0; | |
153 | ||
154 | cfg_cipsov4_add_map_failure_remove_doi: | |
155 | cipso_v4_doi_remove(doi_def->doi, audit_info, netlbl_cipsov4_doi_free); | |
156 | cfg_cipsov4_add_map_failure_unlock: | |
157 | rcu_read_unlock(); | |
948a7243 PM |
158 | audit_buf = netlbl_audit_start_common(AUDIT_MAC_CIPSOV4_ADD, |
159 | audit_info); | |
160 | if (audit_buf != NULL) { | |
161 | switch (doi_def->type) { | |
162 | case CIPSO_V4_MAP_STD: | |
163 | type_str = "std"; | |
164 | break; | |
165 | case CIPSO_V4_MAP_PASS: | |
166 | type_str = "pass"; | |
167 | break; | |
168 | default: | |
169 | type_str = "(unknown)"; | |
170 | } | |
171 | audit_log_format(audit_buf, | |
172 | " cipso_doi=%u cipso_type=%s res=%u", | |
173 | doi_def->doi, type_str, ret_val == 0 ? 1 : 0); | |
174 | audit_log_end(audit_buf); | |
175 | } | |
eda61d32 PM |
176 | cfg_cipsov4_add_map_failure: |
177 | if (entry != NULL) | |
178 | kfree(entry->domain); | |
179 | kfree(entry); | |
180 | return ret_val; | |
181 | } | |
182 | ||
02752760 PM |
183 | /* |
184 | * Security Attribute Functions | |
185 | */ | |
186 | ||
187 | /** | |
188 | * netlbl_secattr_catmap_walk - Walk a LSM secattr catmap looking for a bit | |
189 | * @catmap: the category bitmap | |
190 | * @offset: the offset to start searching at, in bits | |
191 | * | |
192 | * Description: | |
193 | * This function walks a LSM secattr category bitmap starting at @offset and | |
194 | * returns the spot of the first set bit or -ENOENT if no bits are set. | |
195 | * | |
196 | */ | |
197 | int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap, | |
198 | u32 offset) | |
199 | { | |
200 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
201 | u32 node_idx; | |
202 | u32 node_bit; | |
203 | NETLBL_CATMAP_MAPTYPE bitmap; | |
204 | ||
205 | if (offset > iter->startbit) { | |
206 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
207 | iter = iter->next; | |
208 | if (iter == NULL) | |
209 | return -ENOENT; | |
210 | } | |
211 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
212 | node_bit = offset - iter->startbit - | |
213 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
214 | } else { | |
215 | node_idx = 0; | |
216 | node_bit = 0; | |
217 | } | |
218 | bitmap = iter->bitmap[node_idx] >> node_bit; | |
219 | ||
220 | for (;;) { | |
221 | if (bitmap != 0) { | |
222 | while ((bitmap & NETLBL_CATMAP_BIT) == 0) { | |
223 | bitmap >>= 1; | |
224 | node_bit++; | |
225 | } | |
226 | return iter->startbit + | |
227 | (NETLBL_CATMAP_MAPSIZE * node_idx) + node_bit; | |
228 | } | |
229 | if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
230 | if (iter->next != NULL) { | |
231 | iter = iter->next; | |
232 | node_idx = 0; | |
233 | } else | |
234 | return -ENOENT; | |
235 | } | |
236 | bitmap = iter->bitmap[node_idx]; | |
237 | node_bit = 0; | |
238 | } | |
239 | ||
240 | return -ENOENT; | |
241 | } | |
242 | ||
243 | /** | |
244 | * netlbl_secattr_catmap_walk_rng - Find the end of a string of set bits | |
245 | * @catmap: the category bitmap | |
246 | * @offset: the offset to start searching at, in bits | |
247 | * | |
248 | * Description: | |
249 | * This function walks a LSM secattr category bitmap starting at @offset and | |
250 | * returns the spot of the first cleared bit or -ENOENT if the offset is past | |
251 | * the end of the bitmap. | |
252 | * | |
253 | */ | |
254 | int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap, | |
255 | u32 offset) | |
256 | { | |
257 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
258 | u32 node_idx; | |
259 | u32 node_bit; | |
260 | NETLBL_CATMAP_MAPTYPE bitmask; | |
261 | NETLBL_CATMAP_MAPTYPE bitmap; | |
262 | ||
263 | if (offset > iter->startbit) { | |
264 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
265 | iter = iter->next; | |
266 | if (iter == NULL) | |
267 | return -ENOENT; | |
268 | } | |
269 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
270 | node_bit = offset - iter->startbit - | |
271 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
272 | } else { | |
273 | node_idx = 0; | |
274 | node_bit = 0; | |
275 | } | |
276 | bitmask = NETLBL_CATMAP_BIT << node_bit; | |
277 | ||
278 | for (;;) { | |
279 | bitmap = iter->bitmap[node_idx]; | |
280 | while (bitmask != 0 && (bitmap & bitmask) != 0) { | |
281 | bitmask <<= 1; | |
282 | node_bit++; | |
283 | } | |
284 | ||
285 | if (bitmask != 0) | |
286 | return iter->startbit + | |
287 | (NETLBL_CATMAP_MAPSIZE * node_idx) + | |
288 | node_bit - 1; | |
289 | else if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
290 | if (iter->next == NULL) | |
291 | return iter->startbit + NETLBL_CATMAP_SIZE - 1; | |
292 | iter = iter->next; | |
293 | node_idx = 0; | |
294 | } | |
295 | bitmask = NETLBL_CATMAP_BIT; | |
296 | node_bit = 0; | |
297 | } | |
298 | ||
299 | return -ENOENT; | |
300 | } | |
301 | ||
302 | /** | |
303 | * netlbl_secattr_catmap_setbit - Set a bit in a LSM secattr catmap | |
304 | * @catmap: the category bitmap | |
305 | * @bit: the bit to set | |
306 | * @flags: memory allocation flags | |
307 | * | |
308 | * Description: | |
309 | * Set the bit specified by @bit in @catmap. Returns zero on success, | |
310 | * negative values on failure. | |
311 | * | |
312 | */ | |
313 | int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap, | |
314 | u32 bit, | |
315 | gfp_t flags) | |
316 | { | |
317 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
318 | u32 node_bit; | |
319 | u32 node_idx; | |
320 | ||
321 | while (iter->next != NULL && | |
322 | bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
323 | iter = iter->next; | |
324 | if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
325 | iter->next = netlbl_secattr_catmap_alloc(flags); | |
326 | if (iter->next == NULL) | |
327 | return -ENOMEM; | |
328 | iter = iter->next; | |
329 | iter->startbit = bit & ~(NETLBL_CATMAP_SIZE - 1); | |
330 | } | |
331 | ||
332 | /* gcc always rounds to zero when doing integer division */ | |
333 | node_idx = (bit - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
334 | node_bit = bit - iter->startbit - (NETLBL_CATMAP_MAPSIZE * node_idx); | |
335 | iter->bitmap[node_idx] |= NETLBL_CATMAP_BIT << node_bit; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | /** | |
341 | * netlbl_secattr_catmap_setrng - Set a range of bits in a LSM secattr catmap | |
342 | * @catmap: the category bitmap | |
343 | * @start: the starting bit | |
344 | * @end: the last bit in the string | |
345 | * @flags: memory allocation flags | |
346 | * | |
347 | * Description: | |
348 | * Set a range of bits, starting at @start and ending with @end. Returns zero | |
349 | * on success, negative values on failure. | |
350 | * | |
351 | */ | |
352 | int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap, | |
353 | u32 start, | |
354 | u32 end, | |
355 | gfp_t flags) | |
356 | { | |
357 | int ret_val = 0; | |
358 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
359 | u32 iter_max_spot; | |
360 | u32 spot; | |
361 | ||
362 | /* XXX - This could probably be made a bit faster by combining writes | |
363 | * to the catmap instead of setting a single bit each time, but for | |
364 | * right now skipping to the start of the range in the catmap should | |
365 | * be a nice improvement over calling the individual setbit function | |
366 | * repeatedly from a loop. */ | |
367 | ||
368 | while (iter->next != NULL && | |
369 | start >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
370 | iter = iter->next; | |
371 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
372 | ||
373 | for (spot = start; spot <= end && ret_val == 0; spot++) { | |
374 | if (spot >= iter_max_spot && iter->next != NULL) { | |
375 | iter = iter->next; | |
376 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
377 | } | |
378 | ret_val = netlbl_secattr_catmap_setbit(iter, spot, GFP_ATOMIC); | |
379 | } | |
380 | ||
381 | return ret_val; | |
382 | } | |
383 | ||
d15c345f PM |
384 | /* |
385 | * LSM Functions | |
386 | */ | |
387 | ||
23bcdc1a PM |
388 | /** |
389 | * netlbl_enabled - Determine if the NetLabel subsystem is enabled | |
390 | * | |
391 | * Description: | |
392 | * The LSM can use this function to determine if it should use NetLabel | |
393 | * security attributes in it's enforcement mechanism. Currently, NetLabel is | |
394 | * considered to be enabled when it's configuration contains a valid setup for | |
395 | * at least one labeled protocol (i.e. NetLabel can understand incoming | |
396 | * labeled packets of at least one type); otherwise NetLabel is considered to | |
397 | * be disabled. | |
398 | * | |
399 | */ | |
400 | int netlbl_enabled(void) | |
401 | { | |
402 | /* At some point we probably want to expose this mechanism to the user | |
403 | * as well so that admins can toggle NetLabel regardless of the | |
404 | * configuration */ | |
c783f1ce | 405 | return (atomic_read(&netlabel_mgmt_protocount) > 0); |
23bcdc1a PM |
406 | } |
407 | ||
d15c345f PM |
408 | /** |
409 | * netlbl_socket_setattr - Label a socket using the correct protocol | |
ba6ff9f2 | 410 | * @sk: the socket to label |
d15c345f PM |
411 | * @secattr: the security attributes |
412 | * | |
413 | * Description: | |
414 | * Attach the correct label to the given socket using the security attributes | |
ba6ff9f2 PM |
415 | * specified in @secattr. This function requires exclusive access to @sk, |
416 | * which means it either needs to be in the process of being created or locked. | |
417 | * Returns zero on success, negative values on failure. | |
d15c345f PM |
418 | * |
419 | */ | |
ba6ff9f2 PM |
420 | int netlbl_sock_setattr(struct sock *sk, |
421 | const struct netlbl_lsm_secattr *secattr) | |
d15c345f PM |
422 | { |
423 | int ret_val = -ENOENT; | |
424 | struct netlbl_dom_map *dom_entry; | |
425 | ||
426 | rcu_read_lock(); | |
427 | dom_entry = netlbl_domhsh_getentry(secattr->domain); | |
428 | if (dom_entry == NULL) | |
429 | goto socket_setattr_return; | |
430 | switch (dom_entry->type) { | |
431 | case NETLBL_NLTYPE_CIPSOV4: | |
ba6ff9f2 PM |
432 | ret_val = cipso_v4_sock_setattr(sk, |
433 | dom_entry->type_def.cipsov4, | |
434 | secattr); | |
d15c345f PM |
435 | break; |
436 | case NETLBL_NLTYPE_UNLABELED: | |
437 | ret_val = 0; | |
438 | break; | |
439 | default: | |
440 | ret_val = -ENOENT; | |
441 | } | |
442 | ||
443 | socket_setattr_return: | |
444 | rcu_read_unlock(); | |
445 | return ret_val; | |
446 | } | |
447 | ||
14a72f53 PM |
448 | /** |
449 | * netlbl_sock_getattr - Determine the security attributes of a sock | |
450 | * @sk: the sock | |
451 | * @secattr: the security attributes | |
452 | * | |
453 | * Description: | |
8cc44579 | 454 | * Examines the given sock to see if any NetLabel style labeling has been |
14a72f53 PM |
455 | * applied to the sock, if so it parses the socket label and returns the |
456 | * security attributes in @secattr. Returns zero on success, negative values | |
457 | * on failure. | |
458 | * | |
459 | */ | |
460 | int netlbl_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr) | |
461 | { | |
8cc44579 | 462 | return cipso_v4_sock_getattr(sk, secattr); |
14a72f53 PM |
463 | } |
464 | ||
d15c345f PM |
465 | /** |
466 | * netlbl_skbuff_getattr - Determine the security attributes of a packet | |
467 | * @skb: the packet | |
75e22910 | 468 | * @family: protocol family |
d15c345f PM |
469 | * @secattr: the security attributes |
470 | * | |
471 | * Description: | |
472 | * Examines the given packet to see if a recognized form of packet labeling | |
473 | * is present, if so it parses the packet label and returns the security | |
474 | * attributes in @secattr. Returns zero on success, negative values on | |
475 | * failure. | |
476 | * | |
477 | */ | |
478 | int netlbl_skbuff_getattr(const struct sk_buff *skb, | |
75e22910 | 479 | u16 family, |
d15c345f PM |
480 | struct netlbl_lsm_secattr *secattr) |
481 | { | |
05e00cbf PM |
482 | if (CIPSO_V4_OPTEXIST(skb) && |
483 | cipso_v4_skbuff_getattr(skb, secattr) == 0) | |
d15c345f PM |
484 | return 0; |
485 | ||
8cc44579 | 486 | return netlbl_unlabel_getattr(skb, family, secattr); |
d15c345f PM |
487 | } |
488 | ||
489 | /** | |
490 | * netlbl_skbuff_err - Handle a LSM error on a sk_buff | |
491 | * @skb: the packet | |
492 | * @error: the error code | |
dfaebe98 | 493 | * @gateway: true if host is acting as a gateway, false otherwise |
d15c345f PM |
494 | * |
495 | * Description: | |
496 | * Deal with a LSM problem when handling the packet in @skb, typically this is | |
497 | * a permission denied problem (-EACCES). The correct action is determined | |
498 | * according to the packet's labeling protocol. | |
499 | * | |
500 | */ | |
dfaebe98 | 501 | void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway) |
d15c345f PM |
502 | { |
503 | if (CIPSO_V4_OPTEXIST(skb)) | |
dfaebe98 | 504 | cipso_v4_error(skb, error, gateway); |
d15c345f PM |
505 | } |
506 | ||
507 | /** | |
508 | * netlbl_cache_invalidate - Invalidate all of the NetLabel protocol caches | |
509 | * | |
510 | * Description: | |
511 | * For all of the NetLabel protocols that support some form of label mapping | |
512 | * cache, invalidate the cache. Returns zero on success, negative values on | |
513 | * error. | |
514 | * | |
515 | */ | |
516 | void netlbl_cache_invalidate(void) | |
517 | { | |
518 | cipso_v4_cache_invalidate(); | |
519 | } | |
520 | ||
521 | /** | |
522 | * netlbl_cache_add - Add an entry to a NetLabel protocol cache | |
523 | * @skb: the packet | |
524 | * @secattr: the packet's security attributes | |
525 | * | |
526 | * Description: | |
527 | * Add the LSM security attributes for the given packet to the underlying | |
528 | * NetLabel protocol's label mapping cache. Returns zero on success, negative | |
529 | * values on error. | |
530 | * | |
531 | */ | |
532 | int netlbl_cache_add(const struct sk_buff *skb, | |
533 | const struct netlbl_lsm_secattr *secattr) | |
534 | { | |
701a90ba | 535 | if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0) |
d15c345f PM |
536 | return -ENOMSG; |
537 | ||
538 | if (CIPSO_V4_OPTEXIST(skb)) | |
539 | return cipso_v4_cache_add(skb, secattr); | |
540 | ||
541 | return -ENOMSG; | |
542 | } | |
543 | ||
544 | /* | |
545 | * Setup Functions | |
546 | */ | |
547 | ||
548 | /** | |
549 | * netlbl_init - Initialize NetLabel | |
550 | * | |
551 | * Description: | |
552 | * Perform the required NetLabel initialization before first use. | |
553 | * | |
554 | */ | |
555 | static int __init netlbl_init(void) | |
556 | { | |
557 | int ret_val; | |
558 | ||
559 | printk(KERN_INFO "NetLabel: Initializing\n"); | |
560 | printk(KERN_INFO "NetLabel: domain hash size = %u\n", | |
561 | (1 << NETLBL_DOMHSH_BITSIZE)); | |
562 | printk(KERN_INFO "NetLabel: protocols =" | |
563 | " UNLABELED" | |
564 | " CIPSOv4" | |
565 | "\n"); | |
566 | ||
567 | ret_val = netlbl_domhsh_init(NETLBL_DOMHSH_BITSIZE); | |
568 | if (ret_val != 0) | |
569 | goto init_failure; | |
570 | ||
8cc44579 PM |
571 | ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE); |
572 | if (ret_val != 0) | |
573 | goto init_failure; | |
574 | ||
d15c345f PM |
575 | ret_val = netlbl_netlink_init(); |
576 | if (ret_val != 0) | |
577 | goto init_failure; | |
578 | ||
579 | ret_val = netlbl_unlabel_defconf(); | |
580 | if (ret_val != 0) | |
581 | goto init_failure; | |
582 | printk(KERN_INFO "NetLabel: unlabeled traffic allowed by default\n"); | |
583 | ||
584 | return 0; | |
585 | ||
586 | init_failure: | |
587 | panic("NetLabel: failed to initialize properly (%d)\n", ret_val); | |
588 | } | |
589 | ||
590 | subsys_initcall(netlbl_init); |