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;
};
/*
- * LSM security attribute operations
+ * LSM security attribute operations (inline)
*/
-
/**
* netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
* @flags: the memory allocation flags
kfree(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;
}
/**
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);
}
/**
* 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);
}
kfree(secattr);
}
+#ifdef CONFIG_NETLABEL
/*
- * LSM protocol operations
+ * LSM security attribute operations
*/
+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);
-#ifdef CONFIG_NETLABEL
-int netlbl_socket_setattr(const struct socket *sock,
- const struct netlbl_lsm_secattr *secattr);
+/*
+ * LSM protocol operations
+ */
+int netlbl_enabled(void);
+int netlbl_sock_setattr(struct sock *sk,
+ const struct netlbl_lsm_secattr *secattr);
int netlbl_sock_getattr(struct sock *sk,
struct netlbl_lsm_secattr *secattr);
-int netlbl_socket_getattr(const struct socket *sock,
- struct netlbl_lsm_secattr *secattr);
int netlbl_skbuff_getattr(const struct sk_buff *skb,
struct netlbl_lsm_secattr *secattr);
void netlbl_skbuff_err(struct sk_buff *skb, int error);
+
+/*
+ * LSM label mapping cache operations
+ */
+void netlbl_cache_invalidate(void);
+int netlbl_cache_add(const struct sk_buff *skb,
+ const struct netlbl_lsm_secattr *secattr);
#else
-static inline int netlbl_socket_setattr(const struct socket *sock,
+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;
+}
+static inline int netlbl_enabled(void)
+{
+ return 0;
+}
+static inline int netlbl_sock_setattr(struct sock *sk,
const struct netlbl_lsm_secattr *secattr)
{
return -ENOSYS;
}
-
static inline int netlbl_sock_getattr(struct sock *sk,
struct netlbl_lsm_secattr *secattr)
{
return -ENOSYS;
}
-
-static inline int netlbl_socket_getattr(const struct socket *sock,
- struct netlbl_lsm_secattr *secattr)
-{
- return -ENOSYS;
-}
-
static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
struct netlbl_lsm_secattr *secattr)
{
return -ENOSYS;
}
-
static inline void netlbl_skbuff_err(struct sk_buff *skb, int error)
{
return;
}
-#endif /* CONFIG_NETLABEL */
-
-/*
- * LSM label mapping cache operations
- */
-
-#ifdef CONFIG_NETLABEL
-void netlbl_cache_invalidate(void);
-int netlbl_cache_add(const struct sk_buff *skb,
- const struct netlbl_lsm_secattr *secattr);
-#else
static inline void netlbl_cache_invalidate(void)
{
return;
}
-
static inline int netlbl_cache_add(const struct sk_buff *skb,
const struct netlbl_lsm_secattr *secattr)
{
projects / linux-2.6-omap-h63xx.git / blobdiff