diff options
Diffstat (limited to 'include/net/netlabel.h')
| -rw-r--r-- | include/net/netlabel.h | 123 |
1 files changed, 113 insertions, 10 deletions
diff --git a/include/net/netlabel.h b/include/net/netlabel.h index 12c214b9ead..83da7e1f0d3 100644 --- a/include/net/netlabel.h +++ b/include/net/netlabel.h @@ -111,13 +111,34 @@ struct netlbl_lsm_cache { void (*free) (const void *data); void *data; }; +/* The catmap bitmap field MUST be a power of two in length and large + * enough to hold at least 240 bits. Special care (i.e. check the code!) + * should be used when changing these values as the LSM implementation + * probably has functions which rely on the sizes of these types to speed + * processing. */ +#define NETLBL_CATMAP_MAPTYPE u64 +#define NETLBL_CATMAP_MAPCNT 4 +#define NETLBL_CATMAP_MAPSIZE (sizeof(NETLBL_CATMAP_MAPTYPE) * 8) +#define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \ + NETLBL_CATMAP_MAPCNT) +#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01 +struct netlbl_lsm_secattr_catmap { + u32 startbit; + NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT]; + struct netlbl_lsm_secattr_catmap *next; +}; +#define NETLBL_SECATTR_NONE 0x00000000 +#define NETLBL_SECATTR_DOMAIN 0x00000001 +#define NETLBL_SECATTR_CACHE 0x00000002 +#define NETLBL_SECATTR_MLS_LVL 0x00000004 +#define NETLBL_SECATTR_MLS_CAT 0x00000008 struct netlbl_lsm_secattr { + u32 flags; + char *domain; u32 mls_lvl; - u32 mls_lvl_vld; - unsigned char *mls_cat; - size_t mls_cat_len; + struct netlbl_lsm_secattr_catmap *mls_cat; struct netlbl_lsm_cache *cache; }; @@ -165,18 +186,54 @@ static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache) } /** + * netlbl_secattr_catmap_alloc - Allocate a LSM secattr catmap + * @flags: memory allocation flags + * + * Description: + * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL + * on failure. + * + */ +static inline struct netlbl_lsm_secattr_catmap *netlbl_secattr_catmap_alloc( + gfp_t flags) +{ + return kzalloc(sizeof(struct netlbl_lsm_secattr_catmap), flags); +} + +/** + * netlbl_secattr_catmap_free - Free a LSM secattr catmap + * @catmap: the category bitmap + * + * Description: + * Free a LSM secattr catmap. + * + */ +static inline void netlbl_secattr_catmap_free( + struct netlbl_lsm_secattr_catmap *catmap) +{ + struct netlbl_lsm_secattr_catmap *iter; + + do { + iter = catmap; + catmap = catmap->next; + kfree(iter); + } while (catmap); +} + +/** * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct * @secattr: the struct to initialize * * Description: - * Initialize an already allocated netlbl_lsm_secattr struct. Returns zero on - * success, negative values on error. + * Initialize an already allocated netlbl_lsm_secattr struct. * */ -static inline int netlbl_secattr_init(struct netlbl_lsm_secattr *secattr) +static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr) { - memset(secattr, 0, sizeof(*secattr)); - return 0; + secattr->flags = 0; + secattr->domain = NULL; + secattr->mls_cat = NULL; + secattr->cache = NULL; } /** @@ -193,7 +250,8 @@ static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr) if (secattr->cache) netlbl_secattr_cache_free(secattr->cache); kfree(secattr->domain); - kfree(secattr->mls_cat); + if (secattr->mls_cat) + netlbl_secattr_catmap_free(secattr->mls_cat); } /** @@ -205,7 +263,7 @@ static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr) * pointer on success, or NULL on failure. * */ -static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(int flags) +static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags) { return kzalloc(sizeof(struct netlbl_lsm_secattr), flags); } @@ -224,6 +282,51 @@ static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr) kfree(secattr); } +#ifdef CONFIG_NETLABEL +int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap, + u32 offset); +int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap, + u32 offset); +int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap, + u32 bit, + gfp_t flags); +int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap, + u32 start, + u32 end, + gfp_t flags); +#else +static inline int netlbl_secattr_catmap_walk( + struct netlbl_lsm_secattr_catmap *catmap, + u32 offset) +{ + return -ENOENT; +} + +static inline int netlbl_secattr_catmap_walk_rng( + struct netlbl_lsm_secattr_catmap *catmap, + u32 offset) +{ + return -ENOENT; +} + +static inline int netlbl_secattr_catmap_setbit( + struct netlbl_lsm_secattr_catmap *catmap, + u32 bit, + gfp_t flags) +{ + return 0; +} + +static inline int netlbl_secattr_catmap_setrng( + struct netlbl_lsm_secattr_catmap *catmap, + u32 start, + u32 end, + gfp_t flags) +{ + return 0; +} +#endif + /* * LSM protocol operations */ |