Commit | Line | Data |
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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 | * | |
82c21bfa | 8 | * Author: Paul Moore <paul@paul-moore.com> |
d15c345f PM |
9 | * |
10 | */ | |
11 | ||
12 | /* | |
014ab19a | 13 | * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008 |
d15c345f PM |
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 | |
d484ff15 | 26 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
d15c345f PM |
27 | * |
28 | */ | |
29 | ||
30 | #include <linux/init.h> | |
31 | #include <linux/types.h> | |
5a0e3ad6 | 32 | #include <linux/slab.h> |
eda61d32 | 33 | #include <linux/audit.h> |
6c2e8ac0 PM |
34 | #include <linux/in.h> |
35 | #include <linux/in6.h> | |
d15c345f | 36 | #include <net/ip.h> |
6c2e8ac0 | 37 | #include <net/ipv6.h> |
d15c345f PM |
38 | #include <net/netlabel.h> |
39 | #include <net/cipso_ipv4.h> | |
40 | #include <asm/bug.h> | |
60063497 | 41 | #include <linux/atomic.h> |
d15c345f PM |
42 | |
43 | #include "netlabel_domainhash.h" | |
44 | #include "netlabel_unlabeled.h" | |
eda61d32 | 45 | #include "netlabel_cipso_v4.h" |
d15c345f | 46 | #include "netlabel_user.h" |
23bcdc1a | 47 | #include "netlabel_mgmt.h" |
6c2e8ac0 | 48 | #include "netlabel_addrlist.h" |
d15c345f | 49 | |
eda61d32 PM |
50 | /* |
51 | * Configuration Functions | |
52 | */ | |
53 | ||
54 | /** | |
55 | * netlbl_cfg_map_del - Remove a NetLabel/LSM domain mapping | |
56 | * @domain: the domain mapping to remove | |
6c2e8ac0 PM |
57 | * @family: address family |
58 | * @addr: IP address | |
59 | * @mask: IP address mask | |
eda61d32 PM |
60 | * @audit_info: NetLabel audit information |
61 | * | |
62 | * Description: | |
63 | * Removes a NetLabel/LSM domain mapping. A @domain value of NULL causes the | |
64 | * default domain mapping to be removed. Returns zero on success, negative | |
65 | * values on failure. | |
66 | * | |
67 | */ | |
6c2e8ac0 PM |
68 | int netlbl_cfg_map_del(const char *domain, |
69 | u16 family, | |
70 | const void *addr, | |
71 | const void *mask, | |
72 | struct netlbl_audit *audit_info) | |
eda61d32 | 73 | { |
6c2e8ac0 PM |
74 | if (addr == NULL && mask == NULL) { |
75 | return netlbl_domhsh_remove(domain, audit_info); | |
76 | } else if (addr != NULL && mask != NULL) { | |
77 | switch (family) { | |
78 | case AF_INET: | |
79 | return netlbl_domhsh_remove_af4(domain, addr, mask, | |
80 | audit_info); | |
81 | default: | |
82 | return -EPFNOSUPPORT; | |
83 | } | |
84 | } else | |
85 | return -EINVAL; | |
eda61d32 PM |
86 | } |
87 | ||
88 | /** | |
6c2e8ac0 | 89 | * netlbl_cfg_unlbl_map_add - Add a new unlabeled mapping |
eda61d32 | 90 | * @domain: the domain mapping to add |
6c2e8ac0 PM |
91 | * @family: address family |
92 | * @addr: IP address | |
93 | * @mask: IP address mask | |
eda61d32 PM |
94 | * @audit_info: NetLabel audit information |
95 | * | |
96 | * Description: | |
97 | * Adds a new unlabeled NetLabel/LSM domain mapping. A @domain value of NULL | |
98 | * causes a new default domain mapping to be added. Returns zero on success, | |
99 | * negative values on failure. | |
100 | * | |
101 | */ | |
6c2e8ac0 PM |
102 | int netlbl_cfg_unlbl_map_add(const char *domain, |
103 | u16 family, | |
104 | const void *addr, | |
105 | const void *mask, | |
eda61d32 PM |
106 | struct netlbl_audit *audit_info) |
107 | { | |
108 | int ret_val = -ENOMEM; | |
109 | struct netlbl_dom_map *entry; | |
6c2e8ac0 PM |
110 | struct netlbl_domaddr_map *addrmap = NULL; |
111 | struct netlbl_domaddr4_map *map4 = NULL; | |
112 | struct netlbl_domaddr6_map *map6 = NULL; | |
eda61d32 PM |
113 | |
114 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
115 | if (entry == NULL) | |
948a7243 | 116 | return -ENOMEM; |
eda61d32 PM |
117 | if (domain != NULL) { |
118 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
119 | if (entry->domain == NULL) | |
6c2e8ac0 PM |
120 | goto cfg_unlbl_map_add_failure; |
121 | } | |
122 | ||
123 | if (addr == NULL && mask == NULL) | |
6a8b7f0c | 124 | entry->def.type = NETLBL_NLTYPE_UNLABELED; |
6c2e8ac0 PM |
125 | else if (addr != NULL && mask != NULL) { |
126 | addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); | |
127 | if (addrmap == NULL) | |
128 | goto cfg_unlbl_map_add_failure; | |
129 | INIT_LIST_HEAD(&addrmap->list4); | |
130 | INIT_LIST_HEAD(&addrmap->list6); | |
131 | ||
132 | switch (family) { | |
1281bc25 PM |
133 | case AF_INET: { |
134 | const struct in_addr *addr4 = addr; | |
135 | const struct in_addr *mask4 = mask; | |
6c2e8ac0 PM |
136 | map4 = kzalloc(sizeof(*map4), GFP_ATOMIC); |
137 | if (map4 == NULL) | |
138 | goto cfg_unlbl_map_add_failure; | |
6a8b7f0c | 139 | map4->def.type = NETLBL_NLTYPE_UNLABELED; |
6c2e8ac0 PM |
140 | map4->list.addr = addr4->s_addr & mask4->s_addr; |
141 | map4->list.mask = mask4->s_addr; | |
142 | map4->list.valid = 1; | |
143 | ret_val = netlbl_af4list_add(&map4->list, | |
144 | &addrmap->list4); | |
145 | if (ret_val != 0) | |
146 | goto cfg_unlbl_map_add_failure; | |
147 | break; | |
1281bc25 | 148 | } |
dfd56b8b | 149 | #if IS_ENABLED(CONFIG_IPV6) |
1281bc25 PM |
150 | case AF_INET6: { |
151 | const struct in6_addr *addr6 = addr; | |
152 | const struct in6_addr *mask6 = mask; | |
6c2e8ac0 | 153 | map6 = kzalloc(sizeof(*map6), GFP_ATOMIC); |
ca7daea6 | 154 | if (map6 == NULL) |
6c2e8ac0 | 155 | goto cfg_unlbl_map_add_failure; |
6a8b7f0c | 156 | map6->def.type = NETLBL_NLTYPE_UNLABELED; |
4e3fd7a0 | 157 | map6->list.addr = *addr6; |
6c2e8ac0 PM |
158 | map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0]; |
159 | map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1]; | |
160 | map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2]; | |
161 | map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3]; | |
4e3fd7a0 | 162 | map6->list.mask = *mask6; |
6c2e8ac0 | 163 | map6->list.valid = 1; |
42ca0203 DC |
164 | ret_val = netlbl_af6list_add(&map6->list, |
165 | &addrmap->list6); | |
6c2e8ac0 PM |
166 | if (ret_val != 0) |
167 | goto cfg_unlbl_map_add_failure; | |
168 | break; | |
1281bc25 PM |
169 | } |
170 | #endif /* IPv6 */ | |
6c2e8ac0 PM |
171 | default: |
172 | goto cfg_unlbl_map_add_failure; | |
173 | break; | |
174 | } | |
175 | ||
6a8b7f0c PM |
176 | entry->def.addrsel = addrmap; |
177 | entry->def.type = NETLBL_NLTYPE_ADDRSELECT; | |
6c2e8ac0 PM |
178 | } else { |
179 | ret_val = -EINVAL; | |
180 | goto cfg_unlbl_map_add_failure; | |
eda61d32 | 181 | } |
eda61d32 PM |
182 | |
183 | ret_val = netlbl_domhsh_add(entry, audit_info); | |
184 | if (ret_val != 0) | |
6c2e8ac0 | 185 | goto cfg_unlbl_map_add_failure; |
eda61d32 PM |
186 | |
187 | return 0; | |
188 | ||
6c2e8ac0 | 189 | cfg_unlbl_map_add_failure: |
47943234 | 190 | kfree(entry->domain); |
eda61d32 | 191 | kfree(entry); |
6c2e8ac0 PM |
192 | kfree(addrmap); |
193 | kfree(map4); | |
194 | kfree(map6); | |
eda61d32 PM |
195 | return ret_val; |
196 | } | |
197 | ||
6c2e8ac0 PM |
198 | |
199 | /** | |
200 | * netlbl_cfg_unlbl_static_add - Adds a new static label | |
201 | * @net: network namespace | |
202 | * @dev_name: interface name | |
203 | * @addr: IP address in network byte order (struct in[6]_addr) | |
204 | * @mask: address mask in network byte order (struct in[6]_addr) | |
205 | * @family: address family | |
206 | * @secid: LSM secid value for the entry | |
207 | * @audit_info: NetLabel audit information | |
208 | * | |
209 | * Description: | |
210 | * Adds a new NetLabel static label to be used when protocol provided labels | |
211 | * are not present on incoming traffic. If @dev_name is NULL then the default | |
212 | * interface will be used. Returns zero on success, negative values on failure. | |
213 | * | |
214 | */ | |
215 | int netlbl_cfg_unlbl_static_add(struct net *net, | |
216 | const char *dev_name, | |
217 | const void *addr, | |
218 | const void *mask, | |
219 | u16 family, | |
220 | u32 secid, | |
221 | struct netlbl_audit *audit_info) | |
222 | { | |
223 | u32 addr_len; | |
224 | ||
225 | switch (family) { | |
226 | case AF_INET: | |
227 | addr_len = sizeof(struct in_addr); | |
228 | break; | |
dfd56b8b | 229 | #if IS_ENABLED(CONFIG_IPV6) |
6c2e8ac0 PM |
230 | case AF_INET6: |
231 | addr_len = sizeof(struct in6_addr); | |
232 | break; | |
1281bc25 | 233 | #endif /* IPv6 */ |
6c2e8ac0 PM |
234 | default: |
235 | return -EPFNOSUPPORT; | |
236 | } | |
237 | ||
238 | return netlbl_unlhsh_add(net, | |
239 | dev_name, addr, mask, addr_len, | |
240 | secid, audit_info); | |
241 | } | |
242 | ||
243 | /** | |
244 | * netlbl_cfg_unlbl_static_del - Removes an existing static label | |
245 | * @net: network namespace | |
246 | * @dev_name: interface name | |
247 | * @addr: IP address in network byte order (struct in[6]_addr) | |
248 | * @mask: address mask in network byte order (struct in[6]_addr) | |
249 | * @family: address family | |
250 | * @secid: LSM secid value for the entry | |
251 | * @audit_info: NetLabel audit information | |
252 | * | |
253 | * Description: | |
254 | * Removes an existing NetLabel static label used when protocol provided labels | |
255 | * are not present on incoming traffic. If @dev_name is NULL then the default | |
256 | * interface will be used. Returns zero on success, negative values on failure. | |
257 | * | |
258 | */ | |
259 | int netlbl_cfg_unlbl_static_del(struct net *net, | |
260 | const char *dev_name, | |
261 | const void *addr, | |
262 | const void *mask, | |
263 | u16 family, | |
264 | struct netlbl_audit *audit_info) | |
265 | { | |
266 | u32 addr_len; | |
267 | ||
268 | switch (family) { | |
269 | case AF_INET: | |
270 | addr_len = sizeof(struct in_addr); | |
271 | break; | |
dfd56b8b | 272 | #if IS_ENABLED(CONFIG_IPV6) |
6c2e8ac0 PM |
273 | case AF_INET6: |
274 | addr_len = sizeof(struct in6_addr); | |
275 | break; | |
1281bc25 | 276 | #endif /* IPv6 */ |
6c2e8ac0 PM |
277 | default: |
278 | return -EPFNOSUPPORT; | |
279 | } | |
280 | ||
281 | return netlbl_unlhsh_remove(net, | |
282 | dev_name, addr, mask, addr_len, | |
283 | audit_info); | |
284 | } | |
285 | ||
286 | /** | |
287 | * netlbl_cfg_cipsov4_add - Add a new CIPSOv4 DOI definition | |
288 | * @doi_def: CIPSO DOI definition | |
289 | * @audit_info: NetLabel audit information | |
290 | * | |
291 | * Description: | |
292 | * Add a new CIPSO DOI definition as defined by @doi_def. Returns zero on | |
293 | * success and negative values on failure. | |
294 | * | |
295 | */ | |
296 | int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, | |
297 | struct netlbl_audit *audit_info) | |
298 | { | |
299 | return cipso_v4_doi_add(doi_def, audit_info); | |
300 | } | |
301 | ||
302 | /** | |
303 | * netlbl_cfg_cipsov4_del - Remove an existing CIPSOv4 DOI definition | |
304 | * @doi: CIPSO DOI | |
305 | * @audit_info: NetLabel audit information | |
306 | * | |
307 | * Description: | |
308 | * Remove an existing CIPSO DOI definition matching @doi. Returns zero on | |
309 | * success and negative values on failure. | |
310 | * | |
311 | */ | |
312 | void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info) | |
313 | { | |
314 | cipso_v4_doi_remove(doi, audit_info); | |
315 | } | |
316 | ||
eda61d32 | 317 | /** |
6c2e8ac0 PM |
318 | * netlbl_cfg_cipsov4_map_add - Add a new CIPSOv4 DOI mapping |
319 | * @doi: the CIPSO DOI | |
eda61d32 | 320 | * @domain: the domain mapping to add |
6c2e8ac0 PM |
321 | * @addr: IP address |
322 | * @mask: IP address mask | |
eda61d32 PM |
323 | * @audit_info: NetLabel audit information |
324 | * | |
325 | * Description: | |
6c2e8ac0 PM |
326 | * Add a new NetLabel/LSM domain mapping for the given CIPSO DOI to the NetLabel |
327 | * subsystem. A @domain value of NULL adds a new default domain mapping. | |
328 | * Returns zero on success, negative values on failure. | |
eda61d32 PM |
329 | * |
330 | */ | |
6c2e8ac0 | 331 | int netlbl_cfg_cipsov4_map_add(u32 doi, |
eda61d32 | 332 | const char *domain, |
6c2e8ac0 PM |
333 | const struct in_addr *addr, |
334 | const struct in_addr *mask, | |
eda61d32 PM |
335 | struct netlbl_audit *audit_info) |
336 | { | |
337 | int ret_val = -ENOMEM; | |
6c2e8ac0 | 338 | struct cipso_v4_doi *doi_def; |
eda61d32 | 339 | struct netlbl_dom_map *entry; |
6c2e8ac0 PM |
340 | struct netlbl_domaddr_map *addrmap = NULL; |
341 | struct netlbl_domaddr4_map *addrinfo = NULL; | |
eda61d32 | 342 | |
6c2e8ac0 PM |
343 | doi_def = cipso_v4_doi_getdef(doi); |
344 | if (doi_def == NULL) | |
345 | return -ENOENT; | |
b1edeb10 | 346 | |
eda61d32 PM |
347 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
348 | if (entry == NULL) | |
94a80d63 | 349 | goto out_entry; |
eda61d32 PM |
350 | if (domain != NULL) { |
351 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
352 | if (entry->domain == NULL) | |
94a80d63 | 353 | goto out_domain; |
eda61d32 | 354 | } |
eda61d32 | 355 | |
6c2e8ac0 | 356 | if (addr == NULL && mask == NULL) { |
6a8b7f0c PM |
357 | entry->def.cipso = doi_def; |
358 | entry->def.type = NETLBL_NLTYPE_CIPSOV4; | |
6c2e8ac0 PM |
359 | } else if (addr != NULL && mask != NULL) { |
360 | addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); | |
361 | if (addrmap == NULL) | |
94a80d63 | 362 | goto out_addrmap; |
6c2e8ac0 PM |
363 | INIT_LIST_HEAD(&addrmap->list4); |
364 | INIT_LIST_HEAD(&addrmap->list6); | |
365 | ||
366 | addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC); | |
367 | if (addrinfo == NULL) | |
94a80d63 | 368 | goto out_addrinfo; |
6a8b7f0c PM |
369 | addrinfo->def.cipso = doi_def; |
370 | addrinfo->def.type = NETLBL_NLTYPE_CIPSOV4; | |
6c2e8ac0 PM |
371 | addrinfo->list.addr = addr->s_addr & mask->s_addr; |
372 | addrinfo->list.mask = mask->s_addr; | |
373 | addrinfo->list.valid = 1; | |
374 | ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4); | |
375 | if (ret_val != 0) | |
376 | goto cfg_cipsov4_map_add_failure; | |
377 | ||
6a8b7f0c PM |
378 | entry->def.addrsel = addrmap; |
379 | entry->def.type = NETLBL_NLTYPE_ADDRSELECT; | |
6c2e8ac0 PM |
380 | } else { |
381 | ret_val = -EINVAL; | |
94a80d63 | 382 | goto out_addrmap; |
b1edeb10 | 383 | } |
6c2e8ac0 | 384 | |
eda61d32 PM |
385 | ret_val = netlbl_domhsh_add(entry, audit_info); |
386 | if (ret_val != 0) | |
6c2e8ac0 | 387 | goto cfg_cipsov4_map_add_failure; |
b1edeb10 | 388 | |
6c2e8ac0 | 389 | return 0; |
b1edeb10 | 390 | |
6c2e8ac0 | 391 | cfg_cipsov4_map_add_failure: |
94a80d63 JL |
392 | kfree(addrinfo); |
393 | out_addrinfo: | |
394 | kfree(addrmap); | |
395 | out_addrmap: | |
47943234 | 396 | kfree(entry->domain); |
94a80d63 | 397 | out_domain: |
eda61d32 | 398 | kfree(entry); |
94a80d63 JL |
399 | out_entry: |
400 | cipso_v4_doi_putdef(doi_def); | |
6c2e8ac0 | 401 | return ret_val; |
eda61d32 PM |
402 | } |
403 | ||
02752760 PM |
404 | /* |
405 | * Security Attribute Functions | |
406 | */ | |
407 | ||
408 | /** | |
409 | * netlbl_secattr_catmap_walk - Walk a LSM secattr catmap looking for a bit | |
410 | * @catmap: the category bitmap | |
411 | * @offset: the offset to start searching at, in bits | |
412 | * | |
413 | * Description: | |
414 | * This function walks a LSM secattr category bitmap starting at @offset and | |
415 | * returns the spot of the first set bit or -ENOENT if no bits are set. | |
416 | * | |
417 | */ | |
418 | int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap, | |
419 | u32 offset) | |
420 | { | |
421 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
422 | u32 node_idx; | |
423 | u32 node_bit; | |
424 | NETLBL_CATMAP_MAPTYPE bitmap; | |
425 | ||
426 | if (offset > iter->startbit) { | |
427 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
428 | iter = iter->next; | |
429 | if (iter == NULL) | |
430 | return -ENOENT; | |
431 | } | |
432 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
433 | node_bit = offset - iter->startbit - | |
434 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
435 | } else { | |
436 | node_idx = 0; | |
437 | node_bit = 0; | |
438 | } | |
439 | bitmap = iter->bitmap[node_idx] >> node_bit; | |
440 | ||
441 | for (;;) { | |
442 | if (bitmap != 0) { | |
443 | while ((bitmap & NETLBL_CATMAP_BIT) == 0) { | |
444 | bitmap >>= 1; | |
445 | node_bit++; | |
446 | } | |
447 | return iter->startbit + | |
448 | (NETLBL_CATMAP_MAPSIZE * node_idx) + node_bit; | |
449 | } | |
450 | if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
451 | if (iter->next != NULL) { | |
452 | iter = iter->next; | |
453 | node_idx = 0; | |
454 | } else | |
455 | return -ENOENT; | |
456 | } | |
457 | bitmap = iter->bitmap[node_idx]; | |
458 | node_bit = 0; | |
459 | } | |
460 | ||
461 | return -ENOENT; | |
462 | } | |
463 | ||
464 | /** | |
465 | * netlbl_secattr_catmap_walk_rng - Find the end of a string of set bits | |
466 | * @catmap: the category bitmap | |
467 | * @offset: the offset to start searching at, in bits | |
468 | * | |
469 | * Description: | |
470 | * This function walks a LSM secattr category bitmap starting at @offset and | |
471 | * returns the spot of the first cleared bit or -ENOENT if the offset is past | |
472 | * the end of the bitmap. | |
473 | * | |
474 | */ | |
475 | int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap, | |
476 | u32 offset) | |
477 | { | |
478 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
479 | u32 node_idx; | |
480 | u32 node_bit; | |
481 | NETLBL_CATMAP_MAPTYPE bitmask; | |
482 | NETLBL_CATMAP_MAPTYPE bitmap; | |
483 | ||
484 | if (offset > iter->startbit) { | |
485 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
486 | iter = iter->next; | |
487 | if (iter == NULL) | |
488 | return -ENOENT; | |
489 | } | |
490 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
491 | node_bit = offset - iter->startbit - | |
492 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
493 | } else { | |
494 | node_idx = 0; | |
495 | node_bit = 0; | |
496 | } | |
497 | bitmask = NETLBL_CATMAP_BIT << node_bit; | |
498 | ||
499 | for (;;) { | |
500 | bitmap = iter->bitmap[node_idx]; | |
501 | while (bitmask != 0 && (bitmap & bitmask) != 0) { | |
502 | bitmask <<= 1; | |
503 | node_bit++; | |
504 | } | |
505 | ||
506 | if (bitmask != 0) | |
507 | return iter->startbit + | |
508 | (NETLBL_CATMAP_MAPSIZE * node_idx) + | |
509 | node_bit - 1; | |
510 | else if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
511 | if (iter->next == NULL) | |
512 | return iter->startbit + NETLBL_CATMAP_SIZE - 1; | |
513 | iter = iter->next; | |
514 | node_idx = 0; | |
515 | } | |
516 | bitmask = NETLBL_CATMAP_BIT; | |
517 | node_bit = 0; | |
518 | } | |
519 | ||
520 | return -ENOENT; | |
521 | } | |
522 | ||
523 | /** | |
524 | * netlbl_secattr_catmap_setbit - Set a bit in a LSM secattr catmap | |
525 | * @catmap: the category bitmap | |
526 | * @bit: the bit to set | |
527 | * @flags: memory allocation flags | |
528 | * | |
529 | * Description: | |
530 | * Set the bit specified by @bit in @catmap. Returns zero on success, | |
531 | * negative values on failure. | |
532 | * | |
533 | */ | |
534 | int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap, | |
535 | u32 bit, | |
536 | gfp_t flags) | |
537 | { | |
538 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
539 | u32 node_bit; | |
540 | u32 node_idx; | |
541 | ||
542 | while (iter->next != NULL && | |
543 | bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
544 | iter = iter->next; | |
545 | if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
546 | iter->next = netlbl_secattr_catmap_alloc(flags); | |
547 | if (iter->next == NULL) | |
548 | return -ENOMEM; | |
549 | iter = iter->next; | |
550 | iter->startbit = bit & ~(NETLBL_CATMAP_SIZE - 1); | |
551 | } | |
552 | ||
553 | /* gcc always rounds to zero when doing integer division */ | |
554 | node_idx = (bit - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
555 | node_bit = bit - iter->startbit - (NETLBL_CATMAP_MAPSIZE * node_idx); | |
556 | iter->bitmap[node_idx] |= NETLBL_CATMAP_BIT << node_bit; | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
561 | /** | |
562 | * netlbl_secattr_catmap_setrng - Set a range of bits in a LSM secattr catmap | |
563 | * @catmap: the category bitmap | |
564 | * @start: the starting bit | |
565 | * @end: the last bit in the string | |
566 | * @flags: memory allocation flags | |
567 | * | |
568 | * Description: | |
569 | * Set a range of bits, starting at @start and ending with @end. Returns zero | |
570 | * on success, negative values on failure. | |
571 | * | |
572 | */ | |
573 | int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap, | |
574 | u32 start, | |
575 | u32 end, | |
576 | gfp_t flags) | |
577 | { | |
578 | int ret_val = 0; | |
579 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
580 | u32 iter_max_spot; | |
581 | u32 spot; | |
582 | ||
583 | /* XXX - This could probably be made a bit faster by combining writes | |
584 | * to the catmap instead of setting a single bit each time, but for | |
585 | * right now skipping to the start of the range in the catmap should | |
586 | * be a nice improvement over calling the individual setbit function | |
587 | * repeatedly from a loop. */ | |
588 | ||
589 | while (iter->next != NULL && | |
590 | start >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
591 | iter = iter->next; | |
592 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
593 | ||
594 | for (spot = start; spot <= end && ret_val == 0; spot++) { | |
595 | if (spot >= iter_max_spot && iter->next != NULL) { | |
596 | iter = iter->next; | |
597 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
598 | } | |
64b5fad5 | 599 | ret_val = netlbl_secattr_catmap_setbit(iter, spot, flags); |
02752760 PM |
600 | } |
601 | ||
602 | return ret_val; | |
603 | } | |
604 | ||
d15c345f PM |
605 | /* |
606 | * LSM Functions | |
607 | */ | |
608 | ||
23bcdc1a PM |
609 | /** |
610 | * netlbl_enabled - Determine if the NetLabel subsystem is enabled | |
611 | * | |
612 | * Description: | |
613 | * The LSM can use this function to determine if it should use NetLabel | |
614 | * security attributes in it's enforcement mechanism. Currently, NetLabel is | |
615 | * considered to be enabled when it's configuration contains a valid setup for | |
616 | * at least one labeled protocol (i.e. NetLabel can understand incoming | |
617 | * labeled packets of at least one type); otherwise NetLabel is considered to | |
618 | * be disabled. | |
619 | * | |
620 | */ | |
621 | int netlbl_enabled(void) | |
622 | { | |
623 | /* At some point we probably want to expose this mechanism to the user | |
624 | * as well so that admins can toggle NetLabel regardless of the | |
625 | * configuration */ | |
c783f1ce | 626 | return (atomic_read(&netlabel_mgmt_protocount) > 0); |
23bcdc1a PM |
627 | } |
628 | ||
d15c345f | 629 | /** |
389fb800 | 630 | * netlbl_sock_setattr - Label a socket using the correct protocol |
ba6ff9f2 | 631 | * @sk: the socket to label |
389fb800 | 632 | * @family: protocol family |
d15c345f PM |
633 | * @secattr: the security attributes |
634 | * | |
635 | * Description: | |
636 | * Attach the correct label to the given socket using the security attributes | |
ba6ff9f2 PM |
637 | * specified in @secattr. This function requires exclusive access to @sk, |
638 | * which means it either needs to be in the process of being created or locked. | |
63c41688 PM |
639 | * Returns zero on success, -EDESTADDRREQ if the domain is configured to use |
640 | * network address selectors (can't blindly label the socket), and negative | |
641 | * values on all other failures. | |
d15c345f PM |
642 | * |
643 | */ | |
ba6ff9f2 | 644 | int netlbl_sock_setattr(struct sock *sk, |
389fb800 | 645 | u16 family, |
ba6ff9f2 | 646 | const struct netlbl_lsm_secattr *secattr) |
d15c345f | 647 | { |
389fb800 | 648 | int ret_val; |
d15c345f PM |
649 | struct netlbl_dom_map *dom_entry; |
650 | ||
651 | rcu_read_lock(); | |
652 | dom_entry = netlbl_domhsh_getentry(secattr->domain); | |
389fb800 PM |
653 | if (dom_entry == NULL) { |
654 | ret_val = -ENOENT; | |
d15c345f | 655 | goto socket_setattr_return; |
389fb800 PM |
656 | } |
657 | switch (family) { | |
658 | case AF_INET: | |
6a8b7f0c | 659 | switch (dom_entry->def.type) { |
389fb800 PM |
660 | case NETLBL_NLTYPE_ADDRSELECT: |
661 | ret_val = -EDESTADDRREQ; | |
662 | break; | |
663 | case NETLBL_NLTYPE_CIPSOV4: | |
664 | ret_val = cipso_v4_sock_setattr(sk, | |
6a8b7f0c PM |
665 | dom_entry->def.cipso, |
666 | secattr); | |
389fb800 PM |
667 | break; |
668 | case NETLBL_NLTYPE_UNLABELED: | |
669 | ret_val = 0; | |
670 | break; | |
671 | default: | |
672 | ret_val = -ENOENT; | |
673 | } | |
d15c345f | 674 | break; |
dfd56b8b | 675 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
676 | case AF_INET6: |
677 | /* since we don't support any IPv6 labeling protocols right | |
678 | * now we can optimize everything away until we do */ | |
d15c345f PM |
679 | ret_val = 0; |
680 | break; | |
389fb800 | 681 | #endif /* IPv6 */ |
d15c345f | 682 | default: |
389fb800 | 683 | ret_val = -EPROTONOSUPPORT; |
d15c345f PM |
684 | } |
685 | ||
686 | socket_setattr_return: | |
687 | rcu_read_unlock(); | |
688 | return ret_val; | |
689 | } | |
690 | ||
014ab19a PM |
691 | /** |
692 | * netlbl_sock_delattr - Delete all the NetLabel labels on a socket | |
693 | * @sk: the socket | |
694 | * | |
695 | * Description: | |
696 | * Remove all the NetLabel labeling from @sk. The caller is responsible for | |
697 | * ensuring that @sk is locked. | |
698 | * | |
699 | */ | |
700 | void netlbl_sock_delattr(struct sock *sk) | |
701 | { | |
702 | cipso_v4_sock_delattr(sk); | |
703 | } | |
704 | ||
14a72f53 PM |
705 | /** |
706 | * netlbl_sock_getattr - Determine the security attributes of a sock | |
707 | * @sk: the sock | |
708 | * @secattr: the security attributes | |
709 | * | |
710 | * Description: | |
8cc44579 | 711 | * Examines the given sock to see if any NetLabel style labeling has been |
14a72f53 PM |
712 | * applied to the sock, if so it parses the socket label and returns the |
713 | * security attributes in @secattr. Returns zero on success, negative values | |
714 | * on failure. | |
715 | * | |
716 | */ | |
389fb800 PM |
717 | int netlbl_sock_getattr(struct sock *sk, |
718 | struct netlbl_lsm_secattr *secattr) | |
14a72f53 | 719 | { |
389fb800 PM |
720 | int ret_val; |
721 | ||
722 | switch (sk->sk_family) { | |
723 | case AF_INET: | |
724 | ret_val = cipso_v4_sock_getattr(sk, secattr); | |
725 | break; | |
dfd56b8b | 726 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
727 | case AF_INET6: |
728 | ret_val = -ENOMSG; | |
729 | break; | |
730 | #endif /* IPv6 */ | |
731 | default: | |
732 | ret_val = -EPROTONOSUPPORT; | |
733 | } | |
734 | ||
735 | return ret_val; | |
14a72f53 PM |
736 | } |
737 | ||
014ab19a PM |
738 | /** |
739 | * netlbl_conn_setattr - Label a connected socket using the correct protocol | |
740 | * @sk: the socket to label | |
741 | * @addr: the destination address | |
742 | * @secattr: the security attributes | |
743 | * | |
744 | * Description: | |
745 | * Attach the correct label to the given connected socket using the security | |
746 | * attributes specified in @secattr. The caller is responsible for ensuring | |
747 | * that @sk is locked. Returns zero on success, negative values on failure. | |
748 | * | |
749 | */ | |
750 | int netlbl_conn_setattr(struct sock *sk, | |
751 | struct sockaddr *addr, | |
752 | const struct netlbl_lsm_secattr *secattr) | |
753 | { | |
754 | int ret_val; | |
755 | struct sockaddr_in *addr4; | |
6a8b7f0c | 756 | struct netlbl_dommap_def *entry; |
014ab19a PM |
757 | |
758 | rcu_read_lock(); | |
759 | switch (addr->sa_family) { | |
760 | case AF_INET: | |
761 | addr4 = (struct sockaddr_in *)addr; | |
6a8b7f0c PM |
762 | entry = netlbl_domhsh_getentry_af4(secattr->domain, |
763 | addr4->sin_addr.s_addr); | |
764 | if (entry == NULL) { | |
014ab19a PM |
765 | ret_val = -ENOENT; |
766 | goto conn_setattr_return; | |
767 | } | |
6a8b7f0c | 768 | switch (entry->type) { |
014ab19a PM |
769 | case NETLBL_NLTYPE_CIPSOV4: |
770 | ret_val = cipso_v4_sock_setattr(sk, | |
6a8b7f0c | 771 | entry->cipso, secattr); |
014ab19a PM |
772 | break; |
773 | case NETLBL_NLTYPE_UNLABELED: | |
774 | /* just delete the protocols we support for right now | |
775 | * but we could remove other protocols if needed */ | |
776 | cipso_v4_sock_delattr(sk); | |
777 | ret_val = 0; | |
778 | break; | |
779 | default: | |
780 | ret_val = -ENOENT; | |
781 | } | |
782 | break; | |
dfd56b8b | 783 | #if IS_ENABLED(CONFIG_IPV6) |
014ab19a PM |
784 | case AF_INET6: |
785 | /* since we don't support any IPv6 labeling protocols right | |
786 | * now we can optimize everything away until we do */ | |
787 | ret_val = 0; | |
788 | break; | |
789 | #endif /* IPv6 */ | |
790 | default: | |
389fb800 | 791 | ret_val = -EPROTONOSUPPORT; |
014ab19a PM |
792 | } |
793 | ||
794 | conn_setattr_return: | |
795 | rcu_read_unlock(); | |
796 | return ret_val; | |
797 | } | |
798 | ||
389fb800 PM |
799 | /** |
800 | * netlbl_req_setattr - Label a request socket using the correct protocol | |
801 | * @req: the request socket to label | |
802 | * @secattr: the security attributes | |
803 | * | |
804 | * Description: | |
805 | * Attach the correct label to the given socket using the security attributes | |
806 | * specified in @secattr. Returns zero on success, negative values on failure. | |
807 | * | |
808 | */ | |
809 | int netlbl_req_setattr(struct request_sock *req, | |
810 | const struct netlbl_lsm_secattr *secattr) | |
811 | { | |
812 | int ret_val; | |
6a8b7f0c | 813 | struct netlbl_dommap_def *entry; |
389fb800 PM |
814 | |
815 | rcu_read_lock(); | |
389fb800 PM |
816 | switch (req->rsk_ops->family) { |
817 | case AF_INET: | |
6a8b7f0c | 818 | entry = netlbl_domhsh_getentry_af4(secattr->domain, |
634fb979 | 819 | inet_rsk(req)->ir_rmt_addr); |
6a8b7f0c PM |
820 | if (entry == NULL) { |
821 | ret_val = -ENOENT; | |
822 | goto req_setattr_return; | |
389fb800 | 823 | } |
6a8b7f0c | 824 | switch (entry->type) { |
389fb800 | 825 | case NETLBL_NLTYPE_CIPSOV4: |
6a8b7f0c PM |
826 | ret_val = cipso_v4_req_setattr(req, |
827 | entry->cipso, secattr); | |
389fb800 PM |
828 | break; |
829 | case NETLBL_NLTYPE_UNLABELED: | |
830 | /* just delete the protocols we support for right now | |
831 | * but we could remove other protocols if needed */ | |
832 | cipso_v4_req_delattr(req); | |
833 | ret_val = 0; | |
834 | break; | |
835 | default: | |
836 | ret_val = -ENOENT; | |
837 | } | |
838 | break; | |
dfd56b8b | 839 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
840 | case AF_INET6: |
841 | /* since we don't support any IPv6 labeling protocols right | |
842 | * now we can optimize everything away until we do */ | |
843 | ret_val = 0; | |
844 | break; | |
845 | #endif /* IPv6 */ | |
846 | default: | |
847 | ret_val = -EPROTONOSUPPORT; | |
848 | } | |
849 | ||
850 | req_setattr_return: | |
851 | rcu_read_unlock(); | |
852 | return ret_val; | |
853 | } | |
854 | ||
07feee8f PM |
855 | /** |
856 | * netlbl_req_delattr - Delete all the NetLabel labels on a socket | |
857 | * @req: the socket | |
858 | * | |
859 | * Description: | |
860 | * Remove all the NetLabel labeling from @req. | |
861 | * | |
862 | */ | |
863 | void netlbl_req_delattr(struct request_sock *req) | |
864 | { | |
865 | cipso_v4_req_delattr(req); | |
866 | } | |
867 | ||
948bf85c PM |
868 | /** |
869 | * netlbl_skbuff_setattr - Label a packet using the correct protocol | |
870 | * @skb: the packet | |
871 | * @family: protocol family | |
872 | * @secattr: the security attributes | |
873 | * | |
874 | * Description: | |
875 | * Attach the correct label to the given packet using the security attributes | |
876 | * specified in @secattr. Returns zero on success, negative values on failure. | |
877 | * | |
878 | */ | |
879 | int netlbl_skbuff_setattr(struct sk_buff *skb, | |
880 | u16 family, | |
881 | const struct netlbl_lsm_secattr *secattr) | |
882 | { | |
883 | int ret_val; | |
884 | struct iphdr *hdr4; | |
6a8b7f0c | 885 | struct netlbl_dommap_def *entry; |
948bf85c PM |
886 | |
887 | rcu_read_lock(); | |
888 | switch (family) { | |
889 | case AF_INET: | |
890 | hdr4 = ip_hdr(skb); | |
6a8b7f0c PM |
891 | entry = netlbl_domhsh_getentry_af4(secattr->domain,hdr4->daddr); |
892 | if (entry == NULL) { | |
948bf85c PM |
893 | ret_val = -ENOENT; |
894 | goto skbuff_setattr_return; | |
895 | } | |
6a8b7f0c | 896 | switch (entry->type) { |
948bf85c | 897 | case NETLBL_NLTYPE_CIPSOV4: |
6a8b7f0c PM |
898 | ret_val = cipso_v4_skbuff_setattr(skb, entry->cipso, |
899 | secattr); | |
948bf85c PM |
900 | break; |
901 | case NETLBL_NLTYPE_UNLABELED: | |
902 | /* just delete the protocols we support for right now | |
903 | * but we could remove other protocols if needed */ | |
904 | ret_val = cipso_v4_skbuff_delattr(skb); | |
905 | break; | |
906 | default: | |
907 | ret_val = -ENOENT; | |
908 | } | |
909 | break; | |
dfd56b8b | 910 | #if IS_ENABLED(CONFIG_IPV6) |
948bf85c PM |
911 | case AF_INET6: |
912 | /* since we don't support any IPv6 labeling protocols right | |
913 | * now we can optimize everything away until we do */ | |
914 | ret_val = 0; | |
915 | break; | |
916 | #endif /* IPv6 */ | |
917 | default: | |
389fb800 | 918 | ret_val = -EPROTONOSUPPORT; |
948bf85c PM |
919 | } |
920 | ||
921 | skbuff_setattr_return: | |
922 | rcu_read_unlock(); | |
923 | return ret_val; | |
924 | } | |
925 | ||
d15c345f PM |
926 | /** |
927 | * netlbl_skbuff_getattr - Determine the security attributes of a packet | |
928 | * @skb: the packet | |
75e22910 | 929 | * @family: protocol family |
d15c345f PM |
930 | * @secattr: the security attributes |
931 | * | |
932 | * Description: | |
933 | * Examines the given packet to see if a recognized form of packet labeling | |
934 | * is present, if so it parses the packet label and returns the security | |
935 | * attributes in @secattr. Returns zero on success, negative values on | |
936 | * failure. | |
937 | * | |
938 | */ | |
939 | int netlbl_skbuff_getattr(const struct sk_buff *skb, | |
75e22910 | 940 | u16 family, |
d15c345f PM |
941 | struct netlbl_lsm_secattr *secattr) |
942 | { | |
389fb800 PM |
943 | switch (family) { |
944 | case AF_INET: | |
945 | if (CIPSO_V4_OPTEXIST(skb) && | |
946 | cipso_v4_skbuff_getattr(skb, secattr) == 0) | |
947 | return 0; | |
948 | break; | |
dfd56b8b | 949 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
950 | case AF_INET6: |
951 | break; | |
952 | #endif /* IPv6 */ | |
953 | } | |
d15c345f | 954 | |
8cc44579 | 955 | return netlbl_unlabel_getattr(skb, family, secattr); |
d15c345f PM |
956 | } |
957 | ||
958 | /** | |
959 | * netlbl_skbuff_err - Handle a LSM error on a sk_buff | |
960 | * @skb: the packet | |
961 | * @error: the error code | |
dfaebe98 | 962 | * @gateway: true if host is acting as a gateway, false otherwise |
d15c345f PM |
963 | * |
964 | * Description: | |
965 | * Deal with a LSM problem when handling the packet in @skb, typically this is | |
966 | * a permission denied problem (-EACCES). The correct action is determined | |
967 | * according to the packet's labeling protocol. | |
968 | * | |
969 | */ | |
dfaebe98 | 970 | void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway) |
d15c345f PM |
971 | { |
972 | if (CIPSO_V4_OPTEXIST(skb)) | |
dfaebe98 | 973 | cipso_v4_error(skb, error, gateway); |
d15c345f PM |
974 | } |
975 | ||
976 | /** | |
977 | * netlbl_cache_invalidate - Invalidate all of the NetLabel protocol caches | |
978 | * | |
979 | * Description: | |
980 | * For all of the NetLabel protocols that support some form of label mapping | |
981 | * cache, invalidate the cache. Returns zero on success, negative values on | |
982 | * error. | |
983 | * | |
984 | */ | |
985 | void netlbl_cache_invalidate(void) | |
986 | { | |
987 | cipso_v4_cache_invalidate(); | |
988 | } | |
989 | ||
990 | /** | |
991 | * netlbl_cache_add - Add an entry to a NetLabel protocol cache | |
992 | * @skb: the packet | |
993 | * @secattr: the packet's security attributes | |
994 | * | |
995 | * Description: | |
996 | * Add the LSM security attributes for the given packet to the underlying | |
997 | * NetLabel protocol's label mapping cache. Returns zero on success, negative | |
998 | * values on error. | |
999 | * | |
1000 | */ | |
1001 | int netlbl_cache_add(const struct sk_buff *skb, | |
1002 | const struct netlbl_lsm_secattr *secattr) | |
1003 | { | |
701a90ba | 1004 | if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0) |
d15c345f PM |
1005 | return -ENOMSG; |
1006 | ||
1007 | if (CIPSO_V4_OPTEXIST(skb)) | |
1008 | return cipso_v4_cache_add(skb, secattr); | |
1009 | ||
1010 | return -ENOMSG; | |
1011 | } | |
1012 | ||
6c2e8ac0 PM |
1013 | /* |
1014 | * Protocol Engine Functions | |
1015 | */ | |
1016 | ||
1017 | /** | |
1018 | * netlbl_audit_start - Start an audit message | |
1019 | * @type: audit message type | |
1020 | * @audit_info: NetLabel audit information | |
1021 | * | |
1022 | * Description: | |
1023 | * Start an audit message using the type specified in @type and fill the audit | |
1024 | * message with some fields common to all NetLabel audit messages. This | |
1025 | * function should only be used by protocol engines, not LSMs. Returns a | |
1026 | * pointer to the audit buffer on success, NULL on failure. | |
1027 | * | |
1028 | */ | |
1029 | struct audit_buffer *netlbl_audit_start(int type, | |
1030 | struct netlbl_audit *audit_info) | |
1031 | { | |
1032 | return netlbl_audit_start_common(type, audit_info); | |
1033 | } | |
1034 | ||
d15c345f PM |
1035 | /* |
1036 | * Setup Functions | |
1037 | */ | |
1038 | ||
1039 | /** | |
1040 | * netlbl_init - Initialize NetLabel | |
1041 | * | |
1042 | * Description: | |
1043 | * Perform the required NetLabel initialization before first use. | |
1044 | * | |
1045 | */ | |
1046 | static int __init netlbl_init(void) | |
1047 | { | |
1048 | int ret_val; | |
1049 | ||
1050 | printk(KERN_INFO "NetLabel: Initializing\n"); | |
1051 | printk(KERN_INFO "NetLabel: domain hash size = %u\n", | |
1052 | (1 << NETLBL_DOMHSH_BITSIZE)); | |
1053 | printk(KERN_INFO "NetLabel: protocols =" | |
1054 | " UNLABELED" | |
1055 | " CIPSOv4" | |
1056 | "\n"); | |
1057 | ||
1058 | ret_val = netlbl_domhsh_init(NETLBL_DOMHSH_BITSIZE); | |
1059 | if (ret_val != 0) | |
1060 | goto init_failure; | |
1061 | ||
8cc44579 PM |
1062 | ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE); |
1063 | if (ret_val != 0) | |
1064 | goto init_failure; | |
1065 | ||
d15c345f PM |
1066 | ret_val = netlbl_netlink_init(); |
1067 | if (ret_val != 0) | |
1068 | goto init_failure; | |
1069 | ||
1070 | ret_val = netlbl_unlabel_defconf(); | |
1071 | if (ret_val != 0) | |
1072 | goto init_failure; | |
1073 | printk(KERN_INFO "NetLabel: unlabeled traffic allowed by default\n"); | |
1074 | ||
1075 | return 0; | |
1076 | ||
1077 | init_failure: | |
1078 | panic("NetLabel: failed to initialize properly (%d)\n", ret_val); | |
1079 | } | |
1080 | ||
1081 | subsys_initcall(netlbl_init); |