[SCTP]: ->a_h is gone now.

[powerpc.git] / include / net / netlabel.h

diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index 190bfdb..d605d79 100644 (file)
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -34,6 +34,7 @@
 #include <linux/net.h>
 #include <linux/skbuff.h>
 #include <net/netlink.h>
+#include <asm/atomic.h>
 
 /*
  * NetLabel - A management interface for maintaining network packet label
@@ -92,26 +93,39 @@
  *
  */
 
+/* NetLabel audit information */
+struct netlbl_audit {
+       u32 secid;
+       uid_t loginuid;
+};
+
 /* Domain mapping definition struct */
 struct netlbl_dom_map;
 
 /* Domain mapping operations */
-int netlbl_domhsh_remove(const char *domain, u32 audit_secid);
+int netlbl_domhsh_remove(const char *domain, struct netlbl_audit *audit_info);
 
 /* LSM security attributes */
 struct netlbl_lsm_cache {
+       atomic_t refcount;
        void (*free) (const void *data);
        void *data;
 };
+#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_cache cache;
+       struct netlbl_lsm_cache *cache;
 };
 
 /*
@@ -119,38 +133,72 @@ struct netlbl_lsm_secattr {
  */
 
 
+/**
+ * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
+ * @flags: the memory allocation flags
+ *
+ * Description:
+ * Allocate and initialize a netlbl_lsm_cache structure.  Returns a pointer
+ * on success, NULL on failure.
+ *
+ */
+static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
+{
+       struct netlbl_lsm_cache *cache;
+
+       cache = kzalloc(sizeof(*cache), flags);
+       if (cache)
+               atomic_set(&cache->refcount, 1);
+       return cache;
+}
+
+/**
+ * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct
+ * @cache: the struct to free
+ *
+ * Description:
+ * Frees @secattr including all of the internal buffers.
+ *
+ */
+static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
+{
+       if (!atomic_dec_and_test(&cache->refcount))
+               return;
+
+       if (cache->free)
+               cache->free(cache->data);
+       kfree(cache);
+}
+
 /**
  * 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;
 }
 
 /**
  * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
  * @secattr: the struct to clear
- * @clear_cache: cache clear flag
  *
  * Description:
  * Destroys the @secattr struct, including freeing all of the internal buffers.
- * If @clear_cache is true then free the cache fields, otherwise leave them
- * intact.  The struct must be reset with a call to netlbl_secattr_init()
- * before reuse.
+ * The struct must be reset with a call to netlbl_secattr_init() before reuse.
  *
  */
-static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr,
-                                         u32 clear_cache)
+static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
 {
-       if (clear_cache && secattr->cache.data != NULL && secattr->cache.free)
-               secattr->cache.free(secattr->cache.data);
+       if (secattr->cache)
+               netlbl_secattr_cache_free(secattr->cache);
        kfree(secattr->domain);
        kfree(secattr->mls_cat);
 }
@@ -164,7 +212,7 @@ 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);
 }
@@ -172,17 +220,14 @@ static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(int flags)
 /**
  * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
  * @secattr: the struct to free
- * @clear_cache: cache clear flag
  *
  * Description:
- * Frees @secattr including all of the internal buffers.  If @clear_cache is
- * true then free the cache fields, otherwise leave them intact.
+ * Frees @secattr including all of the internal buffers.
  *
  */
-static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr,
-                                      u32 clear_cache)
+static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
 {
-       netlbl_secattr_destroy(secattr, clear_cache);
+       netlbl_secattr_destroy(secattr);
        kfree(secattr);
 }