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 | |
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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
eda61d32 | 34 | #include <linux/audit.h> |
6c2e8ac0 PM |
35 | #include <linux/in.h> |
36 | #include <linux/in6.h> | |
d15c345f | 37 | #include <net/ip.h> |
6c2e8ac0 | 38 | #include <net/ipv6.h> |
d15c345f PM |
39 | #include <net/netlabel.h> |
40 | #include <net/cipso_ipv4.h> | |
41 | #include <asm/bug.h> | |
60063497 | 42 | #include <linux/atomic.h> |
d15c345f PM |
43 | |
44 | #include "netlabel_domainhash.h" | |
45 | #include "netlabel_unlabeled.h" | |
eda61d32 | 46 | #include "netlabel_cipso_v4.h" |
d15c345f | 47 | #include "netlabel_user.h" |
23bcdc1a | 48 | #include "netlabel_mgmt.h" |
6c2e8ac0 | 49 | #include "netlabel_addrlist.h" |
d15c345f | 50 | |
eda61d32 PM |
51 | /* |
52 | * Configuration Functions | |
53 | */ | |
54 | ||
55 | /** | |
56 | * netlbl_cfg_map_del - Remove a NetLabel/LSM domain mapping | |
57 | * @domain: the domain mapping to remove | |
6c2e8ac0 PM |
58 | * @family: address family |
59 | * @addr: IP address | |
60 | * @mask: IP address mask | |
eda61d32 PM |
61 | * @audit_info: NetLabel audit information |
62 | * | |
63 | * Description: | |
64 | * Removes a NetLabel/LSM domain mapping. A @domain value of NULL causes the | |
65 | * default domain mapping to be removed. Returns zero on success, negative | |
66 | * values on failure. | |
67 | * | |
68 | */ | |
6c2e8ac0 PM |
69 | int netlbl_cfg_map_del(const char *domain, |
70 | u16 family, | |
71 | const void *addr, | |
72 | const void *mask, | |
73 | struct netlbl_audit *audit_info) | |
eda61d32 | 74 | { |
6c2e8ac0 PM |
75 | if (addr == NULL && mask == NULL) { |
76 | return netlbl_domhsh_remove(domain, audit_info); | |
77 | } else if (addr != NULL && mask != NULL) { | |
78 | switch (family) { | |
79 | case AF_INET: | |
80 | return netlbl_domhsh_remove_af4(domain, addr, mask, | |
81 | audit_info); | |
82 | default: | |
83 | return -EPFNOSUPPORT; | |
84 | } | |
85 | } else | |
86 | return -EINVAL; | |
eda61d32 PM |
87 | } |
88 | ||
89 | /** | |
6c2e8ac0 | 90 | * netlbl_cfg_unlbl_map_add - Add a new unlabeled mapping |
eda61d32 | 91 | * @domain: the domain mapping to add |
6c2e8ac0 PM |
92 | * @family: address family |
93 | * @addr: IP address | |
94 | * @mask: IP address mask | |
eda61d32 PM |
95 | * @audit_info: NetLabel audit information |
96 | * | |
97 | * Description: | |
98 | * Adds a new unlabeled NetLabel/LSM domain mapping. A @domain value of NULL | |
99 | * causes a new default domain mapping to be added. Returns zero on success, | |
100 | * negative values on failure. | |
101 | * | |
102 | */ | |
6c2e8ac0 PM |
103 | int netlbl_cfg_unlbl_map_add(const char *domain, |
104 | u16 family, | |
105 | const void *addr, | |
106 | const void *mask, | |
eda61d32 PM |
107 | struct netlbl_audit *audit_info) |
108 | { | |
109 | int ret_val = -ENOMEM; | |
110 | struct netlbl_dom_map *entry; | |
6c2e8ac0 PM |
111 | struct netlbl_domaddr_map *addrmap = NULL; |
112 | struct netlbl_domaddr4_map *map4 = NULL; | |
113 | struct netlbl_domaddr6_map *map6 = NULL; | |
eda61d32 PM |
114 | |
115 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
116 | if (entry == NULL) | |
948a7243 | 117 | return -ENOMEM; |
eda61d32 PM |
118 | if (domain != NULL) { |
119 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
120 | if (entry->domain == NULL) | |
6c2e8ac0 PM |
121 | goto cfg_unlbl_map_add_failure; |
122 | } | |
123 | ||
124 | if (addr == NULL && mask == NULL) | |
6a8b7f0c | 125 | entry->def.type = NETLBL_NLTYPE_UNLABELED; |
6c2e8ac0 PM |
126 | else if (addr != NULL && mask != NULL) { |
127 | addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); | |
128 | if (addrmap == NULL) | |
129 | goto cfg_unlbl_map_add_failure; | |
130 | INIT_LIST_HEAD(&addrmap->list4); | |
131 | INIT_LIST_HEAD(&addrmap->list6); | |
132 | ||
133 | switch (family) { | |
1281bc25 PM |
134 | case AF_INET: { |
135 | const struct in_addr *addr4 = addr; | |
136 | const struct in_addr *mask4 = mask; | |
6c2e8ac0 PM |
137 | map4 = kzalloc(sizeof(*map4), GFP_ATOMIC); |
138 | if (map4 == NULL) | |
139 | goto cfg_unlbl_map_add_failure; | |
6a8b7f0c | 140 | map4->def.type = NETLBL_NLTYPE_UNLABELED; |
6c2e8ac0 PM |
141 | map4->list.addr = addr4->s_addr & mask4->s_addr; |
142 | map4->list.mask = mask4->s_addr; | |
143 | map4->list.valid = 1; | |
144 | ret_val = netlbl_af4list_add(&map4->list, | |
145 | &addrmap->list4); | |
146 | if (ret_val != 0) | |
147 | goto cfg_unlbl_map_add_failure; | |
148 | break; | |
1281bc25 | 149 | } |
dfd56b8b | 150 | #if IS_ENABLED(CONFIG_IPV6) |
1281bc25 PM |
151 | case AF_INET6: { |
152 | const struct in6_addr *addr6 = addr; | |
153 | const struct in6_addr *mask6 = mask; | |
6c2e8ac0 | 154 | map6 = kzalloc(sizeof(*map6), GFP_ATOMIC); |
ca7daea6 | 155 | if (map6 == NULL) |
6c2e8ac0 | 156 | goto cfg_unlbl_map_add_failure; |
6a8b7f0c | 157 | map6->def.type = NETLBL_NLTYPE_UNLABELED; |
4e3fd7a0 | 158 | map6->list.addr = *addr6; |
6c2e8ac0 PM |
159 | map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0]; |
160 | map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1]; | |
161 | map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2]; | |
162 | map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3]; | |
4e3fd7a0 | 163 | map6->list.mask = *mask6; |
6c2e8ac0 | 164 | map6->list.valid = 1; |
42ca0203 DC |
165 | ret_val = netlbl_af6list_add(&map6->list, |
166 | &addrmap->list6); | |
6c2e8ac0 PM |
167 | if (ret_val != 0) |
168 | goto cfg_unlbl_map_add_failure; | |
169 | break; | |
1281bc25 PM |
170 | } |
171 | #endif /* IPv6 */ | |
6c2e8ac0 PM |
172 | default: |
173 | goto cfg_unlbl_map_add_failure; | |
174 | break; | |
175 | } | |
176 | ||
6a8b7f0c PM |
177 | entry->def.addrsel = addrmap; |
178 | entry->def.type = NETLBL_NLTYPE_ADDRSELECT; | |
6c2e8ac0 PM |
179 | } else { |
180 | ret_val = -EINVAL; | |
181 | goto cfg_unlbl_map_add_failure; | |
eda61d32 | 182 | } |
eda61d32 PM |
183 | |
184 | ret_val = netlbl_domhsh_add(entry, audit_info); | |
185 | if (ret_val != 0) | |
6c2e8ac0 | 186 | goto cfg_unlbl_map_add_failure; |
eda61d32 PM |
187 | |
188 | return 0; | |
189 | ||
6c2e8ac0 | 190 | cfg_unlbl_map_add_failure: |
47943234 | 191 | kfree(entry->domain); |
eda61d32 | 192 | kfree(entry); |
6c2e8ac0 PM |
193 | kfree(addrmap); |
194 | kfree(map4); | |
195 | kfree(map6); | |
eda61d32 PM |
196 | return ret_val; |
197 | } | |
198 | ||
6c2e8ac0 PM |
199 | |
200 | /** | |
201 | * netlbl_cfg_unlbl_static_add - Adds a new static label | |
202 | * @net: network namespace | |
203 | * @dev_name: interface name | |
204 | * @addr: IP address in network byte order (struct in[6]_addr) | |
205 | * @mask: address mask in network byte order (struct in[6]_addr) | |
206 | * @family: address family | |
207 | * @secid: LSM secid value for the entry | |
208 | * @audit_info: NetLabel audit information | |
209 | * | |
210 | * Description: | |
211 | * Adds a new NetLabel static label to be used when protocol provided labels | |
212 | * are not present on incoming traffic. If @dev_name is NULL then the default | |
213 | * interface will be used. Returns zero on success, negative values on failure. | |
214 | * | |
215 | */ | |
216 | int netlbl_cfg_unlbl_static_add(struct net *net, | |
217 | const char *dev_name, | |
218 | const void *addr, | |
219 | const void *mask, | |
220 | u16 family, | |
221 | u32 secid, | |
222 | struct netlbl_audit *audit_info) | |
223 | { | |
224 | u32 addr_len; | |
225 | ||
226 | switch (family) { | |
227 | case AF_INET: | |
228 | addr_len = sizeof(struct in_addr); | |
229 | break; | |
dfd56b8b | 230 | #if IS_ENABLED(CONFIG_IPV6) |
6c2e8ac0 PM |
231 | case AF_INET6: |
232 | addr_len = sizeof(struct in6_addr); | |
233 | break; | |
1281bc25 | 234 | #endif /* IPv6 */ |
6c2e8ac0 PM |
235 | default: |
236 | return -EPFNOSUPPORT; | |
237 | } | |
238 | ||
239 | return netlbl_unlhsh_add(net, | |
240 | dev_name, addr, mask, addr_len, | |
241 | secid, audit_info); | |
242 | } | |
243 | ||
244 | /** | |
245 | * netlbl_cfg_unlbl_static_del - Removes an existing static label | |
246 | * @net: network namespace | |
247 | * @dev_name: interface name | |
248 | * @addr: IP address in network byte order (struct in[6]_addr) | |
249 | * @mask: address mask in network byte order (struct in[6]_addr) | |
250 | * @family: address family | |
251 | * @secid: LSM secid value for the entry | |
252 | * @audit_info: NetLabel audit information | |
253 | * | |
254 | * Description: | |
255 | * Removes an existing NetLabel static label used when protocol provided labels | |
256 | * are not present on incoming traffic. If @dev_name is NULL then the default | |
257 | * interface will be used. Returns zero on success, negative values on failure. | |
258 | * | |
259 | */ | |
260 | int netlbl_cfg_unlbl_static_del(struct net *net, | |
261 | const char *dev_name, | |
262 | const void *addr, | |
263 | const void *mask, | |
264 | u16 family, | |
265 | struct netlbl_audit *audit_info) | |
266 | { | |
267 | u32 addr_len; | |
268 | ||
269 | switch (family) { | |
270 | case AF_INET: | |
271 | addr_len = sizeof(struct in_addr); | |
272 | break; | |
dfd56b8b | 273 | #if IS_ENABLED(CONFIG_IPV6) |
6c2e8ac0 PM |
274 | case AF_INET6: |
275 | addr_len = sizeof(struct in6_addr); | |
276 | break; | |
1281bc25 | 277 | #endif /* IPv6 */ |
6c2e8ac0 PM |
278 | default: |
279 | return -EPFNOSUPPORT; | |
280 | } | |
281 | ||
282 | return netlbl_unlhsh_remove(net, | |
283 | dev_name, addr, mask, addr_len, | |
284 | audit_info); | |
285 | } | |
286 | ||
287 | /** | |
288 | * netlbl_cfg_cipsov4_add - Add a new CIPSOv4 DOI definition | |
289 | * @doi_def: CIPSO DOI definition | |
290 | * @audit_info: NetLabel audit information | |
291 | * | |
292 | * Description: | |
293 | * Add a new CIPSO DOI definition as defined by @doi_def. Returns zero on | |
294 | * success and negative values on failure. | |
295 | * | |
296 | */ | |
297 | int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, | |
298 | struct netlbl_audit *audit_info) | |
299 | { | |
300 | return cipso_v4_doi_add(doi_def, audit_info); | |
301 | } | |
302 | ||
303 | /** | |
304 | * netlbl_cfg_cipsov4_del - Remove an existing CIPSOv4 DOI definition | |
305 | * @doi: CIPSO DOI | |
306 | * @audit_info: NetLabel audit information | |
307 | * | |
308 | * Description: | |
309 | * Remove an existing CIPSO DOI definition matching @doi. Returns zero on | |
310 | * success and negative values on failure. | |
311 | * | |
312 | */ | |
313 | void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info) | |
314 | { | |
315 | cipso_v4_doi_remove(doi, audit_info); | |
316 | } | |
317 | ||
eda61d32 | 318 | /** |
6c2e8ac0 PM |
319 | * netlbl_cfg_cipsov4_map_add - Add a new CIPSOv4 DOI mapping |
320 | * @doi: the CIPSO DOI | |
eda61d32 | 321 | * @domain: the domain mapping to add |
6c2e8ac0 PM |
322 | * @addr: IP address |
323 | * @mask: IP address mask | |
eda61d32 PM |
324 | * @audit_info: NetLabel audit information |
325 | * | |
326 | * Description: | |
6c2e8ac0 PM |
327 | * Add a new NetLabel/LSM domain mapping for the given CIPSO DOI to the NetLabel |
328 | * subsystem. A @domain value of NULL adds a new default domain mapping. | |
329 | * Returns zero on success, negative values on failure. | |
eda61d32 PM |
330 | * |
331 | */ | |
6c2e8ac0 | 332 | int netlbl_cfg_cipsov4_map_add(u32 doi, |
eda61d32 | 333 | const char *domain, |
6c2e8ac0 PM |
334 | const struct in_addr *addr, |
335 | const struct in_addr *mask, | |
eda61d32 PM |
336 | struct netlbl_audit *audit_info) |
337 | { | |
338 | int ret_val = -ENOMEM; | |
6c2e8ac0 | 339 | struct cipso_v4_doi *doi_def; |
eda61d32 | 340 | struct netlbl_dom_map *entry; |
6c2e8ac0 PM |
341 | struct netlbl_domaddr_map *addrmap = NULL; |
342 | struct netlbl_domaddr4_map *addrinfo = NULL; | |
eda61d32 | 343 | |
6c2e8ac0 PM |
344 | doi_def = cipso_v4_doi_getdef(doi); |
345 | if (doi_def == NULL) | |
346 | return -ENOENT; | |
b1edeb10 | 347 | |
eda61d32 PM |
348 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); |
349 | if (entry == NULL) | |
94a80d63 | 350 | goto out_entry; |
eda61d32 PM |
351 | if (domain != NULL) { |
352 | entry->domain = kstrdup(domain, GFP_ATOMIC); | |
353 | if (entry->domain == NULL) | |
94a80d63 | 354 | goto out_domain; |
eda61d32 | 355 | } |
eda61d32 | 356 | |
6c2e8ac0 | 357 | if (addr == NULL && mask == NULL) { |
6a8b7f0c PM |
358 | entry->def.cipso = doi_def; |
359 | entry->def.type = NETLBL_NLTYPE_CIPSOV4; | |
6c2e8ac0 PM |
360 | } else if (addr != NULL && mask != NULL) { |
361 | addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC); | |
362 | if (addrmap == NULL) | |
94a80d63 | 363 | goto out_addrmap; |
6c2e8ac0 PM |
364 | INIT_LIST_HEAD(&addrmap->list4); |
365 | INIT_LIST_HEAD(&addrmap->list6); | |
366 | ||
367 | addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC); | |
368 | if (addrinfo == NULL) | |
94a80d63 | 369 | goto out_addrinfo; |
6a8b7f0c PM |
370 | addrinfo->def.cipso = doi_def; |
371 | addrinfo->def.type = NETLBL_NLTYPE_CIPSOV4; | |
6c2e8ac0 PM |
372 | addrinfo->list.addr = addr->s_addr & mask->s_addr; |
373 | addrinfo->list.mask = mask->s_addr; | |
374 | addrinfo->list.valid = 1; | |
375 | ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4); | |
376 | if (ret_val != 0) | |
377 | goto cfg_cipsov4_map_add_failure; | |
378 | ||
6a8b7f0c PM |
379 | entry->def.addrsel = addrmap; |
380 | entry->def.type = NETLBL_NLTYPE_ADDRSELECT; | |
6c2e8ac0 PM |
381 | } else { |
382 | ret_val = -EINVAL; | |
94a80d63 | 383 | goto out_addrmap; |
b1edeb10 | 384 | } |
6c2e8ac0 | 385 | |
eda61d32 PM |
386 | ret_val = netlbl_domhsh_add(entry, audit_info); |
387 | if (ret_val != 0) | |
6c2e8ac0 | 388 | goto cfg_cipsov4_map_add_failure; |
b1edeb10 | 389 | |
6c2e8ac0 | 390 | return 0; |
b1edeb10 | 391 | |
6c2e8ac0 | 392 | cfg_cipsov4_map_add_failure: |
94a80d63 JL |
393 | kfree(addrinfo); |
394 | out_addrinfo: | |
395 | kfree(addrmap); | |
396 | out_addrmap: | |
47943234 | 397 | kfree(entry->domain); |
94a80d63 | 398 | out_domain: |
eda61d32 | 399 | kfree(entry); |
94a80d63 JL |
400 | out_entry: |
401 | cipso_v4_doi_putdef(doi_def); | |
6c2e8ac0 | 402 | return ret_val; |
eda61d32 PM |
403 | } |
404 | ||
02752760 PM |
405 | /* |
406 | * Security Attribute Functions | |
407 | */ | |
408 | ||
409 | /** | |
410 | * netlbl_secattr_catmap_walk - Walk a LSM secattr catmap looking for a bit | |
411 | * @catmap: the category bitmap | |
412 | * @offset: the offset to start searching at, in bits | |
413 | * | |
414 | * Description: | |
415 | * This function walks a LSM secattr category bitmap starting at @offset and | |
416 | * returns the spot of the first set bit or -ENOENT if no bits are set. | |
417 | * | |
418 | */ | |
419 | int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap, | |
420 | u32 offset) | |
421 | { | |
422 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
423 | u32 node_idx; | |
424 | u32 node_bit; | |
425 | NETLBL_CATMAP_MAPTYPE bitmap; | |
426 | ||
427 | if (offset > iter->startbit) { | |
428 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
429 | iter = iter->next; | |
430 | if (iter == NULL) | |
431 | return -ENOENT; | |
432 | } | |
433 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
434 | node_bit = offset - iter->startbit - | |
435 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
436 | } else { | |
437 | node_idx = 0; | |
438 | node_bit = 0; | |
439 | } | |
440 | bitmap = iter->bitmap[node_idx] >> node_bit; | |
441 | ||
442 | for (;;) { | |
443 | if (bitmap != 0) { | |
444 | while ((bitmap & NETLBL_CATMAP_BIT) == 0) { | |
445 | bitmap >>= 1; | |
446 | node_bit++; | |
447 | } | |
448 | return iter->startbit + | |
449 | (NETLBL_CATMAP_MAPSIZE * node_idx) + node_bit; | |
450 | } | |
451 | if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
452 | if (iter->next != NULL) { | |
453 | iter = iter->next; | |
454 | node_idx = 0; | |
455 | } else | |
456 | return -ENOENT; | |
457 | } | |
458 | bitmap = iter->bitmap[node_idx]; | |
459 | node_bit = 0; | |
460 | } | |
461 | ||
462 | return -ENOENT; | |
463 | } | |
464 | ||
465 | /** | |
466 | * netlbl_secattr_catmap_walk_rng - Find the end of a string of set bits | |
467 | * @catmap: the category bitmap | |
468 | * @offset: the offset to start searching at, in bits | |
469 | * | |
470 | * Description: | |
471 | * This function walks a LSM secattr category bitmap starting at @offset and | |
472 | * returns the spot of the first cleared bit or -ENOENT if the offset is past | |
473 | * the end of the bitmap. | |
474 | * | |
475 | */ | |
476 | int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap, | |
477 | u32 offset) | |
478 | { | |
479 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
480 | u32 node_idx; | |
481 | u32 node_bit; | |
482 | NETLBL_CATMAP_MAPTYPE bitmask; | |
483 | NETLBL_CATMAP_MAPTYPE bitmap; | |
484 | ||
485 | if (offset > iter->startbit) { | |
486 | while (offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
487 | iter = iter->next; | |
488 | if (iter == NULL) | |
489 | return -ENOENT; | |
490 | } | |
491 | node_idx = (offset - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
492 | node_bit = offset - iter->startbit - | |
493 | (NETLBL_CATMAP_MAPSIZE * node_idx); | |
494 | } else { | |
495 | node_idx = 0; | |
496 | node_bit = 0; | |
497 | } | |
498 | bitmask = NETLBL_CATMAP_BIT << node_bit; | |
499 | ||
500 | for (;;) { | |
501 | bitmap = iter->bitmap[node_idx]; | |
502 | while (bitmask != 0 && (bitmap & bitmask) != 0) { | |
503 | bitmask <<= 1; | |
504 | node_bit++; | |
505 | } | |
506 | ||
507 | if (bitmask != 0) | |
508 | return iter->startbit + | |
509 | (NETLBL_CATMAP_MAPSIZE * node_idx) + | |
510 | node_bit - 1; | |
511 | else if (++node_idx >= NETLBL_CATMAP_MAPCNT) { | |
512 | if (iter->next == NULL) | |
513 | return iter->startbit + NETLBL_CATMAP_SIZE - 1; | |
514 | iter = iter->next; | |
515 | node_idx = 0; | |
516 | } | |
517 | bitmask = NETLBL_CATMAP_BIT; | |
518 | node_bit = 0; | |
519 | } | |
520 | ||
521 | return -ENOENT; | |
522 | } | |
523 | ||
524 | /** | |
525 | * netlbl_secattr_catmap_setbit - Set a bit in a LSM secattr catmap | |
526 | * @catmap: the category bitmap | |
527 | * @bit: the bit to set | |
528 | * @flags: memory allocation flags | |
529 | * | |
530 | * Description: | |
531 | * Set the bit specified by @bit in @catmap. Returns zero on success, | |
532 | * negative values on failure. | |
533 | * | |
534 | */ | |
535 | int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap, | |
536 | u32 bit, | |
537 | gfp_t flags) | |
538 | { | |
539 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
540 | u32 node_bit; | |
541 | u32 node_idx; | |
542 | ||
543 | while (iter->next != NULL && | |
544 | bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
545 | iter = iter->next; | |
546 | if (bit >= (iter->startbit + NETLBL_CATMAP_SIZE)) { | |
547 | iter->next = netlbl_secattr_catmap_alloc(flags); | |
548 | if (iter->next == NULL) | |
549 | return -ENOMEM; | |
550 | iter = iter->next; | |
551 | iter->startbit = bit & ~(NETLBL_CATMAP_SIZE - 1); | |
552 | } | |
553 | ||
554 | /* gcc always rounds to zero when doing integer division */ | |
555 | node_idx = (bit - iter->startbit) / NETLBL_CATMAP_MAPSIZE; | |
556 | node_bit = bit - iter->startbit - (NETLBL_CATMAP_MAPSIZE * node_idx); | |
557 | iter->bitmap[node_idx] |= NETLBL_CATMAP_BIT << node_bit; | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | /** | |
563 | * netlbl_secattr_catmap_setrng - Set a range of bits in a LSM secattr catmap | |
564 | * @catmap: the category bitmap | |
565 | * @start: the starting bit | |
566 | * @end: the last bit in the string | |
567 | * @flags: memory allocation flags | |
568 | * | |
569 | * Description: | |
570 | * Set a range of bits, starting at @start and ending with @end. Returns zero | |
571 | * on success, negative values on failure. | |
572 | * | |
573 | */ | |
574 | int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap, | |
575 | u32 start, | |
576 | u32 end, | |
577 | gfp_t flags) | |
578 | { | |
579 | int ret_val = 0; | |
580 | struct netlbl_lsm_secattr_catmap *iter = catmap; | |
581 | u32 iter_max_spot; | |
582 | u32 spot; | |
583 | ||
584 | /* XXX - This could probably be made a bit faster by combining writes | |
585 | * to the catmap instead of setting a single bit each time, but for | |
586 | * right now skipping to the start of the range in the catmap should | |
587 | * be a nice improvement over calling the individual setbit function | |
588 | * repeatedly from a loop. */ | |
589 | ||
590 | while (iter->next != NULL && | |
591 | start >= (iter->startbit + NETLBL_CATMAP_SIZE)) | |
592 | iter = iter->next; | |
593 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
594 | ||
595 | for (spot = start; spot <= end && ret_val == 0; spot++) { | |
596 | if (spot >= iter_max_spot && iter->next != NULL) { | |
597 | iter = iter->next; | |
598 | iter_max_spot = iter->startbit + NETLBL_CATMAP_SIZE; | |
599 | } | |
64b5fad5 | 600 | ret_val = netlbl_secattr_catmap_setbit(iter, spot, flags); |
02752760 PM |
601 | } |
602 | ||
603 | return ret_val; | |
604 | } | |
605 | ||
d15c345f PM |
606 | /* |
607 | * LSM Functions | |
608 | */ | |
609 | ||
23bcdc1a PM |
610 | /** |
611 | * netlbl_enabled - Determine if the NetLabel subsystem is enabled | |
612 | * | |
613 | * Description: | |
614 | * The LSM can use this function to determine if it should use NetLabel | |
615 | * security attributes in it's enforcement mechanism. Currently, NetLabel is | |
616 | * considered to be enabled when it's configuration contains a valid setup for | |
617 | * at least one labeled protocol (i.e. NetLabel can understand incoming | |
618 | * labeled packets of at least one type); otherwise NetLabel is considered to | |
619 | * be disabled. | |
620 | * | |
621 | */ | |
622 | int netlbl_enabled(void) | |
623 | { | |
624 | /* At some point we probably want to expose this mechanism to the user | |
625 | * as well so that admins can toggle NetLabel regardless of the | |
626 | * configuration */ | |
c783f1ce | 627 | return (atomic_read(&netlabel_mgmt_protocount) > 0); |
23bcdc1a PM |
628 | } |
629 | ||
d15c345f | 630 | /** |
389fb800 | 631 | * netlbl_sock_setattr - Label a socket using the correct protocol |
ba6ff9f2 | 632 | * @sk: the socket to label |
389fb800 | 633 | * @family: protocol family |
d15c345f PM |
634 | * @secattr: the security attributes |
635 | * | |
636 | * Description: | |
637 | * Attach the correct label to the given socket using the security attributes | |
ba6ff9f2 PM |
638 | * specified in @secattr. This function requires exclusive access to @sk, |
639 | * which means it either needs to be in the process of being created or locked. | |
63c41688 PM |
640 | * Returns zero on success, -EDESTADDRREQ if the domain is configured to use |
641 | * network address selectors (can't blindly label the socket), and negative | |
642 | * values on all other failures. | |
d15c345f PM |
643 | * |
644 | */ | |
ba6ff9f2 | 645 | int netlbl_sock_setattr(struct sock *sk, |
389fb800 | 646 | u16 family, |
ba6ff9f2 | 647 | const struct netlbl_lsm_secattr *secattr) |
d15c345f | 648 | { |
389fb800 | 649 | int ret_val; |
d15c345f PM |
650 | struct netlbl_dom_map *dom_entry; |
651 | ||
652 | rcu_read_lock(); | |
653 | dom_entry = netlbl_domhsh_getentry(secattr->domain); | |
389fb800 PM |
654 | if (dom_entry == NULL) { |
655 | ret_val = -ENOENT; | |
d15c345f | 656 | goto socket_setattr_return; |
389fb800 PM |
657 | } |
658 | switch (family) { | |
659 | case AF_INET: | |
6a8b7f0c | 660 | switch (dom_entry->def.type) { |
389fb800 PM |
661 | case NETLBL_NLTYPE_ADDRSELECT: |
662 | ret_val = -EDESTADDRREQ; | |
663 | break; | |
664 | case NETLBL_NLTYPE_CIPSOV4: | |
665 | ret_val = cipso_v4_sock_setattr(sk, | |
6a8b7f0c PM |
666 | dom_entry->def.cipso, |
667 | secattr); | |
389fb800 PM |
668 | break; |
669 | case NETLBL_NLTYPE_UNLABELED: | |
670 | ret_val = 0; | |
671 | break; | |
672 | default: | |
673 | ret_val = -ENOENT; | |
674 | } | |
d15c345f | 675 | break; |
dfd56b8b | 676 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
677 | case AF_INET6: |
678 | /* since we don't support any IPv6 labeling protocols right | |
679 | * now we can optimize everything away until we do */ | |
d15c345f PM |
680 | ret_val = 0; |
681 | break; | |
389fb800 | 682 | #endif /* IPv6 */ |
d15c345f | 683 | default: |
389fb800 | 684 | ret_val = -EPROTONOSUPPORT; |
d15c345f PM |
685 | } |
686 | ||
687 | socket_setattr_return: | |
688 | rcu_read_unlock(); | |
689 | return ret_val; | |
690 | } | |
691 | ||
014ab19a PM |
692 | /** |
693 | * netlbl_sock_delattr - Delete all the NetLabel labels on a socket | |
694 | * @sk: the socket | |
695 | * | |
696 | * Description: | |
697 | * Remove all the NetLabel labeling from @sk. The caller is responsible for | |
698 | * ensuring that @sk is locked. | |
699 | * | |
700 | */ | |
701 | void netlbl_sock_delattr(struct sock *sk) | |
702 | { | |
703 | cipso_v4_sock_delattr(sk); | |
704 | } | |
705 | ||
14a72f53 PM |
706 | /** |
707 | * netlbl_sock_getattr - Determine the security attributes of a sock | |
708 | * @sk: the sock | |
709 | * @secattr: the security attributes | |
710 | * | |
711 | * Description: | |
8cc44579 | 712 | * Examines the given sock to see if any NetLabel style labeling has been |
14a72f53 PM |
713 | * applied to the sock, if so it parses the socket label and returns the |
714 | * security attributes in @secattr. Returns zero on success, negative values | |
715 | * on failure. | |
716 | * | |
717 | */ | |
389fb800 PM |
718 | int netlbl_sock_getattr(struct sock *sk, |
719 | struct netlbl_lsm_secattr *secattr) | |
14a72f53 | 720 | { |
389fb800 PM |
721 | int ret_val; |
722 | ||
723 | switch (sk->sk_family) { | |
724 | case AF_INET: | |
725 | ret_val = cipso_v4_sock_getattr(sk, secattr); | |
726 | break; | |
dfd56b8b | 727 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
728 | case AF_INET6: |
729 | ret_val = -ENOMSG; | |
730 | break; | |
731 | #endif /* IPv6 */ | |
732 | default: | |
733 | ret_val = -EPROTONOSUPPORT; | |
734 | } | |
735 | ||
736 | return ret_val; | |
14a72f53 PM |
737 | } |
738 | ||
014ab19a PM |
739 | /** |
740 | * netlbl_conn_setattr - Label a connected socket using the correct protocol | |
741 | * @sk: the socket to label | |
742 | * @addr: the destination address | |
743 | * @secattr: the security attributes | |
744 | * | |
745 | * Description: | |
746 | * Attach the correct label to the given connected socket using the security | |
747 | * attributes specified in @secattr. The caller is responsible for ensuring | |
748 | * that @sk is locked. Returns zero on success, negative values on failure. | |
749 | * | |
750 | */ | |
751 | int netlbl_conn_setattr(struct sock *sk, | |
752 | struct sockaddr *addr, | |
753 | const struct netlbl_lsm_secattr *secattr) | |
754 | { | |
755 | int ret_val; | |
756 | struct sockaddr_in *addr4; | |
6a8b7f0c | 757 | struct netlbl_dommap_def *entry; |
014ab19a PM |
758 | |
759 | rcu_read_lock(); | |
760 | switch (addr->sa_family) { | |
761 | case AF_INET: | |
762 | addr4 = (struct sockaddr_in *)addr; | |
6a8b7f0c PM |
763 | entry = netlbl_domhsh_getentry_af4(secattr->domain, |
764 | addr4->sin_addr.s_addr); | |
765 | if (entry == NULL) { | |
014ab19a PM |
766 | ret_val = -ENOENT; |
767 | goto conn_setattr_return; | |
768 | } | |
6a8b7f0c | 769 | switch (entry->type) { |
014ab19a PM |
770 | case NETLBL_NLTYPE_CIPSOV4: |
771 | ret_val = cipso_v4_sock_setattr(sk, | |
6a8b7f0c | 772 | entry->cipso, secattr); |
014ab19a PM |
773 | break; |
774 | case NETLBL_NLTYPE_UNLABELED: | |
775 | /* just delete the protocols we support for right now | |
776 | * but we could remove other protocols if needed */ | |
777 | cipso_v4_sock_delattr(sk); | |
778 | ret_val = 0; | |
779 | break; | |
780 | default: | |
781 | ret_val = -ENOENT; | |
782 | } | |
783 | break; | |
dfd56b8b | 784 | #if IS_ENABLED(CONFIG_IPV6) |
014ab19a PM |
785 | case AF_INET6: |
786 | /* since we don't support any IPv6 labeling protocols right | |
787 | * now we can optimize everything away until we do */ | |
788 | ret_val = 0; | |
789 | break; | |
790 | #endif /* IPv6 */ | |
791 | default: | |
389fb800 | 792 | ret_val = -EPROTONOSUPPORT; |
014ab19a PM |
793 | } |
794 | ||
795 | conn_setattr_return: | |
796 | rcu_read_unlock(); | |
797 | return ret_val; | |
798 | } | |
799 | ||
389fb800 PM |
800 | /** |
801 | * netlbl_req_setattr - Label a request socket using the correct protocol | |
802 | * @req: the request socket to label | |
803 | * @secattr: the security attributes | |
804 | * | |
805 | * Description: | |
806 | * Attach the correct label to the given socket using the security attributes | |
807 | * specified in @secattr. Returns zero on success, negative values on failure. | |
808 | * | |
809 | */ | |
810 | int netlbl_req_setattr(struct request_sock *req, | |
811 | const struct netlbl_lsm_secattr *secattr) | |
812 | { | |
813 | int ret_val; | |
6a8b7f0c | 814 | struct netlbl_dommap_def *entry; |
389fb800 PM |
815 | |
816 | rcu_read_lock(); | |
389fb800 PM |
817 | switch (req->rsk_ops->family) { |
818 | case AF_INET: | |
6a8b7f0c PM |
819 | entry = netlbl_domhsh_getentry_af4(secattr->domain, |
820 | inet_rsk(req)->rmt_addr); | |
821 | if (entry == NULL) { | |
822 | ret_val = -ENOENT; | |
823 | goto req_setattr_return; | |
389fb800 | 824 | } |
6a8b7f0c | 825 | switch (entry->type) { |
389fb800 | 826 | case NETLBL_NLTYPE_CIPSOV4: |
6a8b7f0c PM |
827 | ret_val = cipso_v4_req_setattr(req, |
828 | entry->cipso, secattr); | |
389fb800 PM |
829 | break; |
830 | case NETLBL_NLTYPE_UNLABELED: | |
831 | /* just delete the protocols we support for right now | |
832 | * but we could remove other protocols if needed */ | |
833 | cipso_v4_req_delattr(req); | |
834 | ret_val = 0; | |
835 | break; | |
836 | default: | |
837 | ret_val = -ENOENT; | |
838 | } | |
839 | break; | |
dfd56b8b | 840 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
841 | case AF_INET6: |
842 | /* since we don't support any IPv6 labeling protocols right | |
843 | * now we can optimize everything away until we do */ | |
844 | ret_val = 0; | |
845 | break; | |
846 | #endif /* IPv6 */ | |
847 | default: | |
848 | ret_val = -EPROTONOSUPPORT; | |
849 | } | |
850 | ||
851 | req_setattr_return: | |
852 | rcu_read_unlock(); | |
853 | return ret_val; | |
854 | } | |
855 | ||
07feee8f PM |
856 | /** |
857 | * netlbl_req_delattr - Delete all the NetLabel labels on a socket | |
858 | * @req: the socket | |
859 | * | |
860 | * Description: | |
861 | * Remove all the NetLabel labeling from @req. | |
862 | * | |
863 | */ | |
864 | void netlbl_req_delattr(struct request_sock *req) | |
865 | { | |
866 | cipso_v4_req_delattr(req); | |
867 | } | |
868 | ||
948bf85c PM |
869 | /** |
870 | * netlbl_skbuff_setattr - Label a packet using the correct protocol | |
871 | * @skb: the packet | |
872 | * @family: protocol family | |
873 | * @secattr: the security attributes | |
874 | * | |
875 | * Description: | |
876 | * Attach the correct label to the given packet using the security attributes | |
877 | * specified in @secattr. Returns zero on success, negative values on failure. | |
878 | * | |
879 | */ | |
880 | int netlbl_skbuff_setattr(struct sk_buff *skb, | |
881 | u16 family, | |
882 | const struct netlbl_lsm_secattr *secattr) | |
883 | { | |
884 | int ret_val; | |
885 | struct iphdr *hdr4; | |
6a8b7f0c | 886 | struct netlbl_dommap_def *entry; |
948bf85c PM |
887 | |
888 | rcu_read_lock(); | |
889 | switch (family) { | |
890 | case AF_INET: | |
891 | hdr4 = ip_hdr(skb); | |
6a8b7f0c PM |
892 | entry = netlbl_domhsh_getentry_af4(secattr->domain,hdr4->daddr); |
893 | if (entry == NULL) { | |
948bf85c PM |
894 | ret_val = -ENOENT; |
895 | goto skbuff_setattr_return; | |
896 | } | |
6a8b7f0c | 897 | switch (entry->type) { |
948bf85c | 898 | case NETLBL_NLTYPE_CIPSOV4: |
6a8b7f0c PM |
899 | ret_val = cipso_v4_skbuff_setattr(skb, entry->cipso, |
900 | secattr); | |
948bf85c PM |
901 | break; |
902 | case NETLBL_NLTYPE_UNLABELED: | |
903 | /* just delete the protocols we support for right now | |
904 | * but we could remove other protocols if needed */ | |
905 | ret_val = cipso_v4_skbuff_delattr(skb); | |
906 | break; | |
907 | default: | |
908 | ret_val = -ENOENT; | |
909 | } | |
910 | break; | |
dfd56b8b | 911 | #if IS_ENABLED(CONFIG_IPV6) |
948bf85c PM |
912 | case AF_INET6: |
913 | /* since we don't support any IPv6 labeling protocols right | |
914 | * now we can optimize everything away until we do */ | |
915 | ret_val = 0; | |
916 | break; | |
917 | #endif /* IPv6 */ | |
918 | default: | |
389fb800 | 919 | ret_val = -EPROTONOSUPPORT; |
948bf85c PM |
920 | } |
921 | ||
922 | skbuff_setattr_return: | |
923 | rcu_read_unlock(); | |
924 | return ret_val; | |
925 | } | |
926 | ||
d15c345f PM |
927 | /** |
928 | * netlbl_skbuff_getattr - Determine the security attributes of a packet | |
929 | * @skb: the packet | |
75e22910 | 930 | * @family: protocol family |
d15c345f PM |
931 | * @secattr: the security attributes |
932 | * | |
933 | * Description: | |
934 | * Examines the given packet to see if a recognized form of packet labeling | |
935 | * is present, if so it parses the packet label and returns the security | |
936 | * attributes in @secattr. Returns zero on success, negative values on | |
937 | * failure. | |
938 | * | |
939 | */ | |
940 | int netlbl_skbuff_getattr(const struct sk_buff *skb, | |
75e22910 | 941 | u16 family, |
d15c345f PM |
942 | struct netlbl_lsm_secattr *secattr) |
943 | { | |
389fb800 PM |
944 | switch (family) { |
945 | case AF_INET: | |
946 | if (CIPSO_V4_OPTEXIST(skb) && | |
947 | cipso_v4_skbuff_getattr(skb, secattr) == 0) | |
948 | return 0; | |
949 | break; | |
dfd56b8b | 950 | #if IS_ENABLED(CONFIG_IPV6) |
389fb800 PM |
951 | case AF_INET6: |
952 | break; | |
953 | #endif /* IPv6 */ | |
954 | } | |
d15c345f | 955 | |
8cc44579 | 956 | return netlbl_unlabel_getattr(skb, family, secattr); |
d15c345f PM |
957 | } |
958 | ||
959 | /** | |
960 | * netlbl_skbuff_err - Handle a LSM error on a sk_buff | |
961 | * @skb: the packet | |
962 | * @error: the error code | |
dfaebe98 | 963 | * @gateway: true if host is acting as a gateway, false otherwise |
d15c345f PM |
964 | * |
965 | * Description: | |
966 | * Deal with a LSM problem when handling the packet in @skb, typically this is | |
967 | * a permission denied problem (-EACCES). The correct action is determined | |
968 | * according to the packet's labeling protocol. | |
969 | * | |
970 | */ | |
dfaebe98 | 971 | void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway) |
d15c345f PM |
972 | { |
973 | if (CIPSO_V4_OPTEXIST(skb)) | |
dfaebe98 | 974 | cipso_v4_error(skb, error, gateway); |
d15c345f PM |
975 | } |
976 | ||
977 | /** | |
978 | * netlbl_cache_invalidate - Invalidate all of the NetLabel protocol caches | |
979 | * | |
980 | * Description: | |
981 | * For all of the NetLabel protocols that support some form of label mapping | |
982 | * cache, invalidate the cache. Returns zero on success, negative values on | |
983 | * error. | |
984 | * | |
985 | */ | |
986 | void netlbl_cache_invalidate(void) | |
987 | { | |
988 | cipso_v4_cache_invalidate(); | |
989 | } | |
990 | ||
991 | /** | |
992 | * netlbl_cache_add - Add an entry to a NetLabel protocol cache | |
993 | * @skb: the packet | |
994 | * @secattr: the packet's security attributes | |
995 | * | |
996 | * Description: | |
997 | * Add the LSM security attributes for the given packet to the underlying | |
998 | * NetLabel protocol's label mapping cache. Returns zero on success, negative | |
999 | * values on error. | |
1000 | * | |
1001 | */ | |
1002 | int netlbl_cache_add(const struct sk_buff *skb, | |
1003 | const struct netlbl_lsm_secattr *secattr) | |
1004 | { | |
701a90ba | 1005 | if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0) |
d15c345f PM |
1006 | return -ENOMSG; |
1007 | ||
1008 | if (CIPSO_V4_OPTEXIST(skb)) | |
1009 | return cipso_v4_cache_add(skb, secattr); | |
1010 | ||
1011 | return -ENOMSG; | |
1012 | } | |
1013 | ||
6c2e8ac0 PM |
1014 | /* |
1015 | * Protocol Engine Functions | |
1016 | */ | |
1017 | ||
1018 | /** | |
1019 | * netlbl_audit_start - Start an audit message | |
1020 | * @type: audit message type | |
1021 | * @audit_info: NetLabel audit information | |
1022 | * | |
1023 | * Description: | |
1024 | * Start an audit message using the type specified in @type and fill the audit | |
1025 | * message with some fields common to all NetLabel audit messages. This | |
1026 | * function should only be used by protocol engines, not LSMs. Returns a | |
1027 | * pointer to the audit buffer on success, NULL on failure. | |
1028 | * | |
1029 | */ | |
1030 | struct audit_buffer *netlbl_audit_start(int type, | |
1031 | struct netlbl_audit *audit_info) | |
1032 | { | |
1033 | return netlbl_audit_start_common(type, audit_info); | |
1034 | } | |
1035 | ||
d15c345f PM |
1036 | /* |
1037 | * Setup Functions | |
1038 | */ | |
1039 | ||
1040 | /** | |
1041 | * netlbl_init - Initialize NetLabel | |
1042 | * | |
1043 | * Description: | |
1044 | * Perform the required NetLabel initialization before first use. | |
1045 | * | |
1046 | */ | |
1047 | static int __init netlbl_init(void) | |
1048 | { | |
1049 | int ret_val; | |
1050 | ||
1051 | printk(KERN_INFO "NetLabel: Initializing\n"); | |
1052 | printk(KERN_INFO "NetLabel: domain hash size = %u\n", | |
1053 | (1 << NETLBL_DOMHSH_BITSIZE)); | |
1054 | printk(KERN_INFO "NetLabel: protocols =" | |
1055 | " UNLABELED" | |
1056 | " CIPSOv4" | |
1057 | "\n"); | |
1058 | ||
1059 | ret_val = netlbl_domhsh_init(NETLBL_DOMHSH_BITSIZE); | |
1060 | if (ret_val != 0) | |
1061 | goto init_failure; | |
1062 | ||
8cc44579 PM |
1063 | ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE); |
1064 | if (ret_val != 0) | |
1065 | goto init_failure; | |
1066 | ||
d15c345f PM |
1067 | ret_val = netlbl_netlink_init(); |
1068 | if (ret_val != 0) | |
1069 | goto init_failure; | |
1070 | ||
1071 | ret_val = netlbl_unlabel_defconf(); | |
1072 | if (ret_val != 0) | |
1073 | goto init_failure; | |
1074 | printk(KERN_INFO "NetLabel: unlabeled traffic allowed by default\n"); | |
1075 | ||
1076 | return 0; | |
1077 | ||
1078 | init_failure: | |
1079 | panic("NetLabel: failed to initialize properly (%d)\n", ret_val); | |
1080 | } | |
1081 | ||
1082 | subsys_initcall(netlbl_init); |