1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * NetLabel System 4 * 5 * The NetLabel system manages static and dynamic label mappings for network 6 * protocols such as CIPSO and RIPSO. 7 * 8 * Author: Paul Moore <paul@paul-moore.com> 9 */ 10 11 /* 12 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008 13 */ 14 15 #ifndef _NETLABEL_H 16 #define _NETLABEL_H 17 18 #include <linux/types.h> 19 #include <linux/slab.h> 20 #include <linux/net.h> 21 #include <linux/skbuff.h> 22 #include <linux/in.h> 23 #include <linux/in6.h> 24 #include <net/netlink.h> 25 #include <net/request_sock.h> 26 #include <linux/refcount.h> 27 28 struct cipso_v4_doi; 29 struct calipso_doi; 30 31 /* 32 * NetLabel - A management interface for maintaining network packet label 33 * mapping tables for explicit packet labeling protocols. 34 * 35 * Network protocols such as CIPSO and RIPSO require a label translation layer 36 * to convert the label on the packet into something meaningful on the host 37 * machine. In the current Linux implementation these mapping tables live 38 * inside the kernel; NetLabel provides a mechanism for user space applications 39 * to manage these mapping tables. 40 * 41 * NetLabel makes use of the Generic NETLINK mechanism as a transport layer to 42 * send messages between kernel and user space. The general format of a 43 * NetLabel message is shown below: 44 * 45 * +-----------------+-------------------+--------- --- -- - 46 * | struct nlmsghdr | struct genlmsghdr | payload 47 * +-----------------+-------------------+--------- --- -- - 48 * 49 * The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal. 50 * The payload is dependent on the subsystem specified in the 51 * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions 52 * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c 53 * file. All of the fields in the NetLabel payload are NETLINK attributes, see 54 * the include/net/netlink.h file for more information on NETLINK attributes. 55 * 56 */ 57 58 /* 59 * NetLabel NETLINK protocol 60 */ 61 62 /* NetLabel NETLINK protocol version 63 * 1: initial version 64 * 2: added static labels for unlabeled connections 65 * 3: network selectors added to the NetLabel/LSM domain mapping and the 66 * CIPSO_V4_MAP_LOCAL CIPSO mapping was added 67 */ 68 #define NETLBL_PROTO_VERSION 3 69 70 /* NetLabel NETLINK types/families */ 71 #define NETLBL_NLTYPE_NONE 0 72 #define NETLBL_NLTYPE_MGMT 1 73 #define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT" 74 #define NETLBL_NLTYPE_RIPSO 2 75 #define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO" 76 #define NETLBL_NLTYPE_CIPSOV4 3 77 #define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4" 78 #define NETLBL_NLTYPE_CIPSOV6 4 79 #define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6" 80 #define NETLBL_NLTYPE_UNLABELED 5 81 #define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL" 82 #define NETLBL_NLTYPE_ADDRSELECT 6 83 #define NETLBL_NLTYPE_ADDRSELECT_NAME "NLBL_ADRSEL" 84 #define NETLBL_NLTYPE_CALIPSO 7 85 #define NETLBL_NLTYPE_CALIPSO_NAME "NLBL_CALIPSO" 86 87 /* 88 * NetLabel - Kernel API for accessing the network packet label mappings. 89 * 90 * The following functions are provided for use by other kernel modules, 91 * specifically kernel LSM modules, to provide a consistent, transparent API 92 * for dealing with explicit packet labeling protocols such as CIPSO and 93 * RIPSO. The functions defined here are implemented in the 94 * net/netlabel/netlabel_kapi.c file. 95 * 96 */ 97 98 /* NetLabel audit information */ 99 struct netlbl_audit { 100 struct lsm_prop prop; 101 kuid_t loginuid; 102 unsigned int sessionid; 103 }; 104 105 /* 106 * LSM security attributes 107 */ 108 109 /** 110 * struct netlbl_lsm_cache - NetLabel LSM security attribute cache 111 * @refcount: atomic reference counter 112 * @free: LSM supplied function to free the cache data 113 * @data: LSM supplied cache data 114 * 115 * Description: 116 * This structure is provided for LSMs which wish to make use of the NetLabel 117 * caching mechanism to store LSM specific data/attributes in the NetLabel 118 * cache. If the LSM has to perform a lot of translation from the NetLabel 119 * security attributes into it's own internal representation then the cache 120 * mechanism can provide a way to eliminate some or all of that translation 121 * overhead on a cache hit. 122 * 123 */ 124 struct netlbl_lsm_cache { 125 refcount_t refcount; 126 void (*free) (const void *data); 127 void *data; 128 }; 129 130 /** 131 * struct netlbl_lsm_catmap - NetLabel LSM secattr category bitmap 132 * @startbit: the value of the lowest order bit in the bitmap 133 * @bitmap: the category bitmap 134 * @next: pointer to the next bitmap "node" or NULL 135 * 136 * Description: 137 * This structure is used to represent category bitmaps. Due to the large 138 * number of categories supported by most labeling protocols it is not 139 * practical to transfer a full bitmap internally so NetLabel adopts a sparse 140 * bitmap structure modeled after SELinux's ebitmap structure. 141 * The catmap bitmap field MUST be a power of two in length and large 142 * enough to hold at least 240 bits. Special care (i.e. check the code!) 143 * should be used when changing these values as the LSM implementation 144 * probably has functions which rely on the sizes of these types to speed 145 * processing. 146 * 147 */ 148 #define NETLBL_CATMAP_MAPCNT 4 149 #define NETLBL_CATMAP_MAPSIZE (sizeof(u64) * 8) 150 #define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \ 151 NETLBL_CATMAP_MAPCNT) 152 #define NETLBL_CATMAP_BIT ((u64)0x01) 153 struct netlbl_lsm_catmap { 154 u32 startbit; 155 u64 bitmap[NETLBL_CATMAP_MAPCNT]; 156 struct netlbl_lsm_catmap *next; 157 }; 158 159 /** 160 * struct netlbl_lsm_secattr - NetLabel LSM security attributes 161 * @flags: indicate structure attributes, see NETLBL_SECATTR_* 162 * @type: indicate the NLTYPE of the attributes 163 * @domain: the NetLabel LSM domain 164 * @cache: NetLabel LSM specific cache 165 * @attr.mls: MLS sensitivity label 166 * @attr.mls.cat: MLS category bitmap 167 * @attr.mls.lvl: MLS sensitivity level 168 * @attr.secid: LSM specific secid token 169 * 170 * Description: 171 * This structure is used to pass security attributes between NetLabel and the 172 * LSM modules. The flags field is used to specify which fields within the 173 * struct are valid and valid values can be created by bitwise OR'ing the 174 * NETLBL_SECATTR_* defines. The domain field is typically set by the LSM to 175 * specify domain specific configuration settings and is not usually used by 176 * NetLabel itself when returning security attributes to the LSM. 177 * 178 */ 179 struct netlbl_lsm_secattr { 180 u32 flags; 181 /* bitmap values for 'flags' */ 182 #define NETLBL_SECATTR_NONE 0x00000000 183 #define NETLBL_SECATTR_DOMAIN 0x00000001 184 #define NETLBL_SECATTR_DOMAIN_CPY (NETLBL_SECATTR_DOMAIN | \ 185 NETLBL_SECATTR_FREE_DOMAIN) 186 #define NETLBL_SECATTR_CACHE 0x00000002 187 #define NETLBL_SECATTR_MLS_LVL 0x00000004 188 #define NETLBL_SECATTR_MLS_CAT 0x00000008 189 #define NETLBL_SECATTR_SECID 0x00000010 190 /* bitmap meta-values for 'flags' */ 191 #define NETLBL_SECATTR_FREE_DOMAIN 0x01000000 192 #define NETLBL_SECATTR_CACHEABLE (NETLBL_SECATTR_MLS_LVL | \ 193 NETLBL_SECATTR_MLS_CAT | \ 194 NETLBL_SECATTR_SECID) 195 u32 type; 196 char *domain; 197 struct netlbl_lsm_cache *cache; 198 struct { 199 struct { 200 struct netlbl_lsm_catmap *cat; 201 u32 lvl; 202 } mls; 203 u32 secid; 204 } attr; 205 }; 206 207 /** 208 * struct netlbl_calipso_ops - NetLabel CALIPSO operations 209 * @doi_add: add a CALIPSO DOI 210 * @doi_free: free a CALIPSO DOI 211 * @doi_remove: remove a CALIPSO DOI 212 * @doi_getdef: returns a reference to a DOI 213 * @doi_putdef: releases a reference of a DOI 214 * @doi_walk: enumerate the DOI list 215 * @sock_getattr: retrieve the socket's attr 216 * @sock_setattr: set the socket's attr 217 * @sock_delattr: remove the socket's attr 218 * @req_setattr: set the req socket's attr 219 * @req_delattr: remove the req socket's attr 220 * @opt_getattr: retrieve attr from memory block 221 * @skbuff_optptr: find option in packet 222 * @skbuff_setattr: set the skbuff's attr 223 * @skbuff_delattr: remove the skbuff's attr 224 * @cache_invalidate: invalidate cache 225 * @cache_add: add cache entry 226 * 227 * Description: 228 * This structure is filled out by the CALIPSO engine and passed 229 * to the NetLabel core via a call to netlbl_calipso_ops_register(). 230 * It enables the CALIPSO engine (and hence IPv6) to be compiled 231 * as a module. 232 */ 233 struct netlbl_calipso_ops { 234 int (*doi_add)(struct calipso_doi *doi_def, 235 struct netlbl_audit *audit_info); 236 void (*doi_free)(struct calipso_doi *doi_def); 237 int (*doi_remove)(u32 doi, struct netlbl_audit *audit_info); 238 struct calipso_doi *(*doi_getdef)(u32 doi); 239 void (*doi_putdef)(struct calipso_doi *doi_def); 240 int (*doi_walk)(u32 *skip_cnt, 241 int (*callback)(struct calipso_doi *doi_def, void *arg), 242 void *cb_arg); 243 int (*sock_getattr)(struct sock *sk, 244 struct netlbl_lsm_secattr *secattr); 245 int (*sock_setattr)(struct sock *sk, 246 const struct calipso_doi *doi_def, 247 const struct netlbl_lsm_secattr *secattr); 248 void (*sock_delattr)(struct sock *sk); 249 int (*req_setattr)(struct request_sock *req, 250 const struct calipso_doi *doi_def, 251 const struct netlbl_lsm_secattr *secattr); 252 void (*req_delattr)(struct request_sock *req); 253 int (*opt_getattr)(const unsigned char *calipso, 254 struct netlbl_lsm_secattr *secattr); 255 unsigned char *(*skbuff_optptr)(const struct sk_buff *skb); 256 int (*skbuff_setattr)(struct sk_buff *skb, 257 const struct calipso_doi *doi_def, 258 const struct netlbl_lsm_secattr *secattr); 259 int (*skbuff_delattr)(struct sk_buff *skb); 260 void (*cache_invalidate)(void); 261 int (*cache_add)(const unsigned char *calipso_ptr, 262 const struct netlbl_lsm_secattr *secattr); 263 }; 264 265 /* 266 * LSM security attribute operations (inline) 267 */ 268 269 /** 270 * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache 271 * @flags: the memory allocation flags 272 * 273 * Description: 274 * Allocate and initialize a netlbl_lsm_cache structure. Returns a pointer 275 * on success, NULL on failure. 276 * 277 */ 278 static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc_noprof(gfp_t flags) 279 { 280 struct netlbl_lsm_cache *cache; 281 282 cache = kzalloc_noprof(sizeof(*cache), flags); 283 if (cache) 284 refcount_set(&cache->refcount, 1); 285 return cache; 286 } 287 #define netlbl_secattr_cache_alloc(...) \ 288 alloc_hooks(netlbl_secattr_cache_alloc_noprof(__VA_ARGS__)) 289 290 /** 291 * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct 292 * @cache: the struct to free 293 * 294 * Description: 295 * Frees @secattr including all of the internal buffers. 296 * 297 */ 298 static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache) 299 { 300 if (!refcount_dec_and_test(&cache->refcount)) 301 return; 302 303 if (cache->free) 304 cache->free(cache->data); 305 kfree(cache); 306 } 307 308 /** 309 * netlbl_catmap_alloc - Allocate a LSM secattr catmap 310 * @flags: memory allocation flags 311 * 312 * Description: 313 * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL 314 * on failure. 315 * 316 */ 317 static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc_noprof(gfp_t flags) 318 { 319 return kzalloc_noprof(sizeof(struct netlbl_lsm_catmap), flags); 320 } 321 #define netlbl_catmap_alloc(...) alloc_hooks(netlbl_catmap_alloc_noprof(__VA_ARGS__)) 322 323 /** 324 * netlbl_catmap_free - Free a LSM secattr catmap 325 * @catmap: the category bitmap 326 * 327 * Description: 328 * Free a LSM secattr catmap. 329 * 330 */ 331 static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap) 332 { 333 struct netlbl_lsm_catmap *iter; 334 335 while (catmap) { 336 iter = catmap; 337 catmap = catmap->next; 338 kfree(iter); 339 } 340 } 341 342 /** 343 * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct 344 * @secattr: the struct to initialize 345 * 346 * Description: 347 * Initialize an already allocated netlbl_lsm_secattr struct. 348 * 349 */ 350 static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr) 351 { 352 memset(secattr, 0, sizeof(*secattr)); 353 } 354 355 /** 356 * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct 357 * @secattr: the struct to clear 358 * 359 * Description: 360 * Destroys the @secattr struct, including freeing all of the internal buffers. 361 * The struct must be reset with a call to netlbl_secattr_init() before reuse. 362 * 363 */ 364 static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr) 365 { 366 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN) 367 kfree(secattr->domain); 368 if (secattr->flags & NETLBL_SECATTR_CACHE) 369 netlbl_secattr_cache_free(secattr->cache); 370 if (secattr->flags & NETLBL_SECATTR_MLS_CAT) 371 netlbl_catmap_free(secattr->attr.mls.cat); 372 } 373 374 /** 375 * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct 376 * @flags: the memory allocation flags 377 * 378 * Description: 379 * Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid 380 * pointer on success, or NULL on failure. 381 * 382 */ 383 static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc_noprof(gfp_t flags) 384 { 385 return kzalloc_noprof(sizeof(struct netlbl_lsm_secattr), flags); 386 } 387 #define netlbl_secattr_alloc(...) alloc_hooks(netlbl_secattr_alloc_noprof(__VA_ARGS__)) 388 389 /** 390 * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct 391 * @secattr: the struct to free 392 * 393 * Description: 394 * Frees @secattr including all of the internal buffers. 395 * 396 */ 397 static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr) 398 { 399 netlbl_secattr_destroy(secattr); 400 kfree(secattr); 401 } 402 403 #ifdef CONFIG_NETLABEL 404 /* 405 * LSM configuration operations 406 */ 407 int netlbl_cfg_map_del(const char *domain, 408 u16 family, 409 const void *addr, 410 const void *mask, 411 struct netlbl_audit *audit_info); 412 int netlbl_cfg_unlbl_map_add(const char *domain, 413 u16 family, 414 const void *addr, 415 const void *mask, 416 struct netlbl_audit *audit_info); 417 int netlbl_cfg_unlbl_static_add(struct net *net, 418 const char *dev_name, 419 const void *addr, 420 const void *mask, 421 u16 family, 422 u32 secid, 423 struct netlbl_audit *audit_info); 424 int netlbl_cfg_unlbl_static_del(struct net *net, 425 const char *dev_name, 426 const void *addr, 427 const void *mask, 428 u16 family, 429 struct netlbl_audit *audit_info); 430 int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, 431 struct netlbl_audit *audit_info); 432 void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info); 433 int netlbl_cfg_cipsov4_map_add(u32 doi, 434 const char *domain, 435 const struct in_addr *addr, 436 const struct in_addr *mask, 437 struct netlbl_audit *audit_info); 438 int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, 439 struct netlbl_audit *audit_info); 440 void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info); 441 int netlbl_cfg_calipso_map_add(u32 doi, 442 const char *domain, 443 const struct in6_addr *addr, 444 const struct in6_addr *mask, 445 struct netlbl_audit *audit_info); 446 /* 447 * LSM security attribute operations 448 */ 449 int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset); 450 int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset); 451 int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, 452 u32 *offset, 453 unsigned long *bitmap); 454 int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, 455 u32 bit, 456 gfp_t flags); 457 int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, 458 u32 start, 459 u32 end, 460 gfp_t flags); 461 int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, 462 u32 offset, 463 unsigned long bitmap, 464 gfp_t flags); 465 466 /* Bitmap functions 467 */ 468 int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len, 469 u32 offset, u8 state); 470 void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state); 471 472 /* 473 * LSM protocol operations (NetLabel LSM/kernel API) 474 */ 475 int netlbl_enabled(void); 476 int netlbl_sock_setattr(struct sock *sk, 477 u16 family, 478 const struct netlbl_lsm_secattr *secattr, 479 bool sk_locked); 480 void netlbl_sock_delattr(struct sock *sk); 481 int netlbl_sock_getattr(struct sock *sk, 482 struct netlbl_lsm_secattr *secattr); 483 int netlbl_conn_setattr(struct sock *sk, 484 struct sockaddr *addr, 485 const struct netlbl_lsm_secattr *secattr); 486 int netlbl_req_setattr(struct request_sock *req, 487 const struct netlbl_lsm_secattr *secattr); 488 void netlbl_req_delattr(struct request_sock *req); 489 int netlbl_skbuff_setattr(struct sk_buff *skb, 490 u16 family, 491 const struct netlbl_lsm_secattr *secattr); 492 int netlbl_skbuff_getattr(const struct sk_buff *skb, 493 u16 family, 494 struct netlbl_lsm_secattr *secattr); 495 void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway); 496 bool netlbl_sk_lock_check(struct sock *sk); 497 498 /* 499 * LSM label mapping cache operations 500 */ 501 void netlbl_cache_invalidate(void); 502 int netlbl_cache_add(const struct sk_buff *skb, u16 family, 503 const struct netlbl_lsm_secattr *secattr); 504 505 /* 506 * Protocol engine operations 507 */ 508 struct audit_buffer *netlbl_audit_start(int type, 509 struct netlbl_audit *audit_info); 510 #else 511 static inline int netlbl_cfg_map_del(const char *domain, 512 u16 family, 513 const void *addr, 514 const void *mask, 515 struct netlbl_audit *audit_info) 516 { 517 return -ENOSYS; 518 } 519 static inline int netlbl_cfg_unlbl_map_add(const char *domain, 520 u16 family, 521 void *addr, 522 void *mask, 523 struct netlbl_audit *audit_info) 524 { 525 return -ENOSYS; 526 } 527 static inline int netlbl_cfg_unlbl_static_add(struct net *net, 528 const char *dev_name, 529 const void *addr, 530 const void *mask, 531 u16 family, 532 u32 secid, 533 struct netlbl_audit *audit_info) 534 { 535 return -ENOSYS; 536 } 537 static inline int netlbl_cfg_unlbl_static_del(struct net *net, 538 const char *dev_name, 539 const void *addr, 540 const void *mask, 541 u16 family, 542 struct netlbl_audit *audit_info) 543 { 544 return -ENOSYS; 545 } 546 static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, 547 struct netlbl_audit *audit_info) 548 { 549 return -ENOSYS; 550 } 551 static inline void netlbl_cfg_cipsov4_del(u32 doi, 552 struct netlbl_audit *audit_info) 553 { 554 return; 555 } 556 static inline int netlbl_cfg_cipsov4_map_add(u32 doi, 557 const char *domain, 558 const struct in_addr *addr, 559 const struct in_addr *mask, 560 struct netlbl_audit *audit_info) 561 { 562 return -ENOSYS; 563 } 564 static inline int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, 565 struct netlbl_audit *audit_info) 566 { 567 return -ENOSYS; 568 } 569 static inline void netlbl_cfg_calipso_del(u32 doi, 570 struct netlbl_audit *audit_info) 571 { 572 return; 573 } 574 static inline int netlbl_cfg_calipso_map_add(u32 doi, 575 const char *domain, 576 const struct in6_addr *addr, 577 const struct in6_addr *mask, 578 struct netlbl_audit *audit_info) 579 { 580 return -ENOSYS; 581 } 582 static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, 583 u32 offset) 584 { 585 return -ENOENT; 586 } 587 static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, 588 u32 offset) 589 { 590 return -ENOENT; 591 } 592 static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, 593 u32 *offset, 594 unsigned long *bitmap) 595 { 596 return 0; 597 } 598 static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, 599 u32 bit, 600 gfp_t flags) 601 { 602 return 0; 603 } 604 static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, 605 u32 start, 606 u32 end, 607 gfp_t flags) 608 { 609 return 0; 610 } 611 static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, 612 u32 offset, 613 unsigned long bitmap, 614 gfp_t flags) 615 { 616 return 0; 617 } 618 static inline int netlbl_enabled(void) 619 { 620 return 0; 621 } 622 static inline int netlbl_sock_setattr(struct sock *sk, 623 u16 family, 624 const struct netlbl_lsm_secattr *secattr, 625 bool sk_locked) 626 { 627 return -ENOSYS; 628 } 629 static inline void netlbl_sock_delattr(struct sock *sk) 630 { 631 } 632 static inline int netlbl_sock_getattr(struct sock *sk, 633 struct netlbl_lsm_secattr *secattr) 634 { 635 return -ENOSYS; 636 } 637 static inline int netlbl_conn_setattr(struct sock *sk, 638 struct sockaddr *addr, 639 const struct netlbl_lsm_secattr *secattr) 640 { 641 return -ENOSYS; 642 } 643 static inline int netlbl_req_setattr(struct request_sock *req, 644 const struct netlbl_lsm_secattr *secattr) 645 { 646 return -ENOSYS; 647 } 648 static inline void netlbl_req_delattr(struct request_sock *req) 649 { 650 return; 651 } 652 static inline int netlbl_skbuff_setattr(struct sk_buff *skb, 653 u16 family, 654 const struct netlbl_lsm_secattr *secattr) 655 { 656 return -ENOSYS; 657 } 658 static inline int netlbl_skbuff_getattr(const struct sk_buff *skb, 659 u16 family, 660 struct netlbl_lsm_secattr *secattr) 661 { 662 return -ENOSYS; 663 } 664 static inline void netlbl_skbuff_err(struct sk_buff *skb, 665 int error, 666 int gateway) 667 { 668 return; 669 } 670 static inline void netlbl_cache_invalidate(void) 671 { 672 return; 673 } 674 static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family, 675 const struct netlbl_lsm_secattr *secattr) 676 { 677 return 0; 678 } 679 static inline struct audit_buffer *netlbl_audit_start(int type, 680 struct netlbl_audit *audit_info) 681 { 682 return NULL; 683 } 684 685 static inline bool netlbl_sk_lock_check(struct sock *sk) 686 { 687 return true; 688 } 689 #endif /* CONFIG_NETLABEL */ 690 691 const struct netlbl_calipso_ops * 692 netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops); 693 694 #endif /* _NETLABEL_H */ 695