include/net/netlabel.h

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