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 labling 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 u32 secid; 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_getdef: returns a reference to a DOI 212 * @doi_putdef: releases a reference of a DOI 213 * @doi_walk: enumerate the DOI list 214 * @sock_getattr: retrieve the socket's attr 215 * @sock_setattr: set the socket's attr 216 * @sock_delattr: remove the socket's attr 217 * @req_setattr: set the req socket's attr 218 * @req_delattr: remove the req socket's attr 219 * @opt_getattr: retrieve attr from memory block 220 * @skbuff_optptr: find option in packet 221 * @skbuff_setattr: set the skbuff's attr 222 * @skbuff_delattr: remove the skbuff's attr 223 * @cache_invalidate: invalidate cache 224 * @cache_add: add cache entry 225 * 226 * Description: 227 * This structure is filled out by the CALIPSO engine and passed 228 * to the NetLabel core via a call to netlbl_calipso_ops_register(). 229 * It enables the CALIPSO engine (and hence IPv6) to be compiled 230 * as a module. 231 */ 232 struct netlbl_calipso_ops { 233 int (*doi_add)(struct calipso_doi *doi_def, 234 struct netlbl_audit *audit_info); 235 void (*doi_free)(struct calipso_doi *doi_def); 236 int (*doi_remove)(u32 doi, struct netlbl_audit *audit_info); 237 struct calipso_doi *(*doi_getdef)(u32 doi); 238 void (*doi_putdef)(struct calipso_doi *doi_def); 239 int (*doi_walk)(u32 *skip_cnt, 240 int (*callback)(struct calipso_doi *doi_def, void *arg), 241 void *cb_arg); 242 int (*sock_getattr)(struct sock *sk, 243 struct netlbl_lsm_secattr *secattr); 244 int (*sock_setattr)(struct sock *sk, 245 const struct calipso_doi *doi_def, 246 const struct netlbl_lsm_secattr *secattr); 247 void (*sock_delattr)(struct sock *sk); 248 int (*req_setattr)(struct request_sock *req, 249 const struct calipso_doi *doi_def, 250 const struct netlbl_lsm_secattr *secattr); 251 void (*req_delattr)(struct request_sock *req); 252 int (*opt_getattr)(const unsigned char *calipso, 253 struct netlbl_lsm_secattr *secattr); 254 unsigned char *(*skbuff_optptr)(const struct sk_buff *skb); 255 int (*skbuff_setattr)(struct sk_buff *skb, 256 const struct calipso_doi *doi_def, 257 const struct netlbl_lsm_secattr *secattr); 258 int (*skbuff_delattr)(struct sk_buff *skb); 259 void (*cache_invalidate)(void); 260 int (*cache_add)(const unsigned char *calipso_ptr, 261 const struct netlbl_lsm_secattr *secattr); 262 }; 263 264 /* 265 * LSM security attribute operations (inline) 266 */ 267 268 /** 269 * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache 270 * @flags: the memory allocation flags 271 * 272 * Description: 273 * Allocate and initialize a netlbl_lsm_cache structure. Returns a pointer 274 * on success, NULL on failure. 275 * 276 */ 277 static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc_noprof(gfp_t flags) 278 { 279 struct netlbl_lsm_cache *cache; 280 281 cache = kzalloc_noprof(sizeof(*cache), flags); 282 if (cache) 283 refcount_set(&cache->refcount, 1); 284 return cache; 285 } 286 #define netlbl_secattr_cache_alloc(...) \ 287 alloc_hooks(netlbl_secattr_cache_alloc_noprof(__VA_ARGS__)) 288 289 /** 290 * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct 291 * @cache: the struct to free 292 * 293 * Description: 294 * Frees @secattr including all of the internal buffers. 295 * 296 */ 297 static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache) 298 { 299 if (!refcount_dec_and_test(&cache->refcount)) 300 return; 301 302 if (cache->free) 303 cache->free(cache->data); 304 kfree(cache); 305 } 306 307 /** 308 * netlbl_catmap_alloc - Allocate a LSM secattr catmap 309 * @flags: memory allocation flags 310 * 311 * Description: 312 * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL 313 * on failure. 314 * 315 */ 316 static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc_noprof(gfp_t flags) 317 { 318 return kzalloc_noprof(sizeof(struct netlbl_lsm_catmap), flags); 319 } 320 #define netlbl_catmap_alloc(...) alloc_hooks(netlbl_catmap_alloc_noprof(__VA_ARGS__)) 321 322 /** 323 * netlbl_catmap_free - Free a LSM secattr catmap 324 * @catmap: the category bitmap 325 * 326 * Description: 327 * Free a LSM secattr catmap. 328 * 329 */ 330 static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap) 331 { 332 struct netlbl_lsm_catmap *iter; 333 334 while (catmap) { 335 iter = catmap; 336 catmap = catmap->next; 337 kfree(iter); 338 } 339 } 340 341 /** 342 * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct 343 * @secattr: the struct to initialize 344 * 345 * Description: 346 * Initialize an already allocated netlbl_lsm_secattr struct. 347 * 348 */ 349 static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr) 350 { 351 memset(secattr, 0, sizeof(*secattr)); 352 } 353 354 /** 355 * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct 356 * @secattr: the struct to clear 357 * 358 * Description: 359 * Destroys the @secattr struct, including freeing all of the internal buffers. 360 * The struct must be reset with a call to netlbl_secattr_init() before reuse. 361 * 362 */ 363 static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr) 364 { 365 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN) 366 kfree(secattr->domain); 367 if (secattr->flags & NETLBL_SECATTR_CACHE) 368 netlbl_secattr_cache_free(secattr->cache); 369 if (secattr->flags & NETLBL_SECATTR_MLS_CAT) 370 netlbl_catmap_free(secattr->attr.mls.cat); 371 } 372 373 /** 374 * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct 375 * @flags: the memory allocation flags 376 * 377 * Description: 378 * Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid 379 * pointer on success, or NULL on failure. 380 * 381 */ 382 static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc_noprof(gfp_t flags) 383 { 384 return kzalloc_noprof(sizeof(struct netlbl_lsm_secattr), flags); 385 } 386 #define netlbl_secattr_alloc(...) alloc_hooks(netlbl_secattr_alloc_noprof(__VA_ARGS__)) 387 388 /** 389 * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct 390 * @secattr: the struct to free 391 * 392 * Description: 393 * Frees @secattr including all of the internal buffers. 394 * 395 */ 396 static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr) 397 { 398 netlbl_secattr_destroy(secattr); 399 kfree(secattr); 400 } 401 402 #ifdef CONFIG_NETLABEL 403 /* 404 * LSM configuration operations 405 */ 406 int netlbl_cfg_map_del(const char *domain, 407 u16 family, 408 const void *addr, 409 const void *mask, 410 struct netlbl_audit *audit_info); 411 int netlbl_cfg_unlbl_map_add(const char *domain, 412 u16 family, 413 const void *addr, 414 const void *mask, 415 struct netlbl_audit *audit_info); 416 int netlbl_cfg_unlbl_static_add(struct net *net, 417 const char *dev_name, 418 const void *addr, 419 const void *mask, 420 u16 family, 421 u32 secid, 422 struct netlbl_audit *audit_info); 423 int netlbl_cfg_unlbl_static_del(struct net *net, 424 const char *dev_name, 425 const void *addr, 426 const void *mask, 427 u16 family, 428 struct netlbl_audit *audit_info); 429 int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, 430 struct netlbl_audit *audit_info); 431 void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info); 432 int netlbl_cfg_cipsov4_map_add(u32 doi, 433 const char *domain, 434 const struct in_addr *addr, 435 const struct in_addr *mask, 436 struct netlbl_audit *audit_info); 437 int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, 438 struct netlbl_audit *audit_info); 439 void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info); 440 int netlbl_cfg_calipso_map_add(u32 doi, 441 const char *domain, 442 const struct in6_addr *addr, 443 const struct in6_addr *mask, 444 struct netlbl_audit *audit_info); 445 /* 446 * LSM security attribute operations 447 */ 448 int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset); 449 int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset); 450 int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, 451 u32 *offset, 452 unsigned long *bitmap); 453 int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, 454 u32 bit, 455 gfp_t flags); 456 int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, 457 u32 start, 458 u32 end, 459 gfp_t flags); 460 int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, 461 u32 offset, 462 unsigned long bitmap, 463 gfp_t flags); 464 465 /* Bitmap functions 466 */ 467 int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len, 468 u32 offset, u8 state); 469 void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state); 470 471 /* 472 * LSM protocol operations (NetLabel LSM/kernel API) 473 */ 474 int netlbl_enabled(void); 475 int netlbl_sock_setattr(struct sock *sk, 476 u16 family, 477 const struct netlbl_lsm_secattr *secattr, 478 bool sk_locked); 479 void netlbl_sock_delattr(struct sock *sk); 480 int netlbl_sock_getattr(struct sock *sk, 481 struct netlbl_lsm_secattr *secattr); 482 int netlbl_conn_setattr(struct sock *sk, 483 struct sockaddr *addr, 484 const struct netlbl_lsm_secattr *secattr); 485 int netlbl_req_setattr(struct request_sock *req, 486 const struct netlbl_lsm_secattr *secattr); 487 void netlbl_req_delattr(struct request_sock *req); 488 int netlbl_skbuff_setattr(struct sk_buff *skb, 489 u16 family, 490 const struct netlbl_lsm_secattr *secattr); 491 int netlbl_skbuff_getattr(const struct sk_buff *skb, 492 u16 family, 493 struct netlbl_lsm_secattr *secattr); 494 void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway); 495 bool netlbl_sk_lock_check(struct sock *sk); 496 497 /* 498 * LSM label mapping cache operations 499 */ 500 void netlbl_cache_invalidate(void); 501 int netlbl_cache_add(const struct sk_buff *skb, u16 family, 502 const struct netlbl_lsm_secattr *secattr); 503 504 /* 505 * Protocol engine operations 506 */ 507 struct audit_buffer *netlbl_audit_start(int type, 508 struct netlbl_audit *audit_info); 509 #else 510 static inline int netlbl_cfg_map_del(const char *domain, 511 u16 family, 512 const void *addr, 513 const void *mask, 514 struct netlbl_audit *audit_info) 515 { 516 return -ENOSYS; 517 } 518 static inline int netlbl_cfg_unlbl_map_add(const char *domain, 519 u16 family, 520 void *addr, 521 void *mask, 522 struct netlbl_audit *audit_info) 523 { 524 return -ENOSYS; 525 } 526 static inline int netlbl_cfg_unlbl_static_add(struct net *net, 527 const char *dev_name, 528 const void *addr, 529 const void *mask, 530 u16 family, 531 u32 secid, 532 struct netlbl_audit *audit_info) 533 { 534 return -ENOSYS; 535 } 536 static inline int netlbl_cfg_unlbl_static_del(struct net *net, 537 const char *dev_name, 538 const void *addr, 539 const void *mask, 540 u16 family, 541 struct netlbl_audit *audit_info) 542 { 543 return -ENOSYS; 544 } 545 static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def, 546 struct netlbl_audit *audit_info) 547 { 548 return -ENOSYS; 549 } 550 static inline void netlbl_cfg_cipsov4_del(u32 doi, 551 struct netlbl_audit *audit_info) 552 { 553 return; 554 } 555 static inline int netlbl_cfg_cipsov4_map_add(u32 doi, 556 const char *domain, 557 const struct in_addr *addr, 558 const struct in_addr *mask, 559 struct netlbl_audit *audit_info) 560 { 561 return -ENOSYS; 562 } 563 static inline int netlbl_cfg_calipso_add(struct calipso_doi *doi_def, 564 struct netlbl_audit *audit_info) 565 { 566 return -ENOSYS; 567 } 568 static inline void netlbl_cfg_calipso_del(u32 doi, 569 struct netlbl_audit *audit_info) 570 { 571 return; 572 } 573 static inline int netlbl_cfg_calipso_map_add(u32 doi, 574 const char *domain, 575 const struct in6_addr *addr, 576 const struct in6_addr *mask, 577 struct netlbl_audit *audit_info) 578 { 579 return -ENOSYS; 580 } 581 static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, 582 u32 offset) 583 { 584 return -ENOENT; 585 } 586 static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, 587 u32 offset) 588 { 589 return -ENOENT; 590 } 591 static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap, 592 u32 *offset, 593 unsigned long *bitmap) 594 { 595 return 0; 596 } 597 static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap, 598 u32 bit, 599 gfp_t flags) 600 { 601 return 0; 602 } 603 static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap, 604 u32 start, 605 u32 end, 606 gfp_t flags) 607 { 608 return 0; 609 } 610 static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap, 611 u32 offset, 612 unsigned long bitmap, 613 gfp_t flags) 614 { 615 return 0; 616 } 617 static inline int netlbl_enabled(void) 618 { 619 return 0; 620 } 621 static inline int netlbl_sock_setattr(struct sock *sk, 622 u16 family, 623 const struct netlbl_lsm_secattr *secattr, 624 bool sk_locked) 625 { 626 return -ENOSYS; 627 } 628 static inline void netlbl_sock_delattr(struct sock *sk) 629 { 630 } 631 static inline int netlbl_sock_getattr(struct sock *sk, 632 struct netlbl_lsm_secattr *secattr) 633 { 634 return -ENOSYS; 635 } 636 static inline int netlbl_conn_setattr(struct sock *sk, 637 struct sockaddr *addr, 638 const struct netlbl_lsm_secattr *secattr) 639 { 640 return -ENOSYS; 641 } 642 static inline int netlbl_req_setattr(struct request_sock *req, 643 const struct netlbl_lsm_secattr *secattr) 644 { 645 return -ENOSYS; 646 } 647 static inline void netlbl_req_delattr(struct request_sock *req) 648 { 649 return; 650 } 651 static inline int netlbl_skbuff_setattr(struct sk_buff *skb, 652 u16 family, 653 const struct netlbl_lsm_secattr *secattr) 654 { 655 return -ENOSYS; 656 } 657 static inline int netlbl_skbuff_getattr(const struct sk_buff *skb, 658 u16 family, 659 struct netlbl_lsm_secattr *secattr) 660 { 661 return -ENOSYS; 662 } 663 static inline void netlbl_skbuff_err(struct sk_buff *skb, 664 int error, 665 int gateway) 666 { 667 return; 668 } 669 static inline void netlbl_cache_invalidate(void) 670 { 671 return; 672 } 673 static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family, 674 const struct netlbl_lsm_secattr *secattr) 675 { 676 return 0; 677 } 678 static inline struct audit_buffer *netlbl_audit_start(int type, 679 struct netlbl_audit *audit_info) 680 { 681 return NULL; 682 } 683 684 static inline bool netlbl_sk_lock_check(struct sock *sk) 685 { 686 return true; 687 } 688 #endif /* CONFIG_NETLABEL */ 689 690 const struct netlbl_calipso_ops * 691 netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops); 692 693 #endif /* _NETLABEL_H */ 694