1 files changed, 33 insertions, 2 deletions

diff --git a/include/linux/security.h b/include/linux/security.h
index cbdba435b798..68e56935716b 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -226,6 +226,37 @@ extern unsigned long dac_mmap_min_addr;
 #endif
 
 /*
+ * A "security context" is the text representation of
+ * the information used by LSMs.
+ * This structure contains the string, its length, and which LSM
+ * it is useful for.
+ */
+struct lsm_context {
+	char	*context;	/* Provided by the module */
+	u32	len;
+	int	id;		/* Identifies the module */
+};
+
+/**
+ * lsmcontext_init - initialize an lsmcontext structure.
+ * @cp: Pointer to the context to initialize
+ * @context: Initial context, or NULL
+ * @size: Size of context, or 0
+ * @id: Which LSM provided the context
+ *
+ * Fill in the lsmcontext from the provided information.
+ * This is a scaffolding function that will be removed when
+ * lsm_context integration is complete.
+ */
+static inline void lsmcontext_init(struct lsm_context *cp, char *context,
+				   u32 size, int id)
+{
+	cp->id = id;
+	cp->context = context;
+	cp->len = size;
+}
+
+/*
  * Values used in the task_security_ops calls
  */
 /* setuid or setgid, id0 == uid or gid */
@@ -556,7 +587,7 @@ int security_ismaclabel(const char *name);
 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
 int security_lsmprop_to_secctx(struct lsm_prop *prop, char **secdata, u32 *seclen);
 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
-void security_release_secctx(char *secdata, u32 seclen);
+void security_release_secctx(struct lsm_context *cp);
 void security_inode_invalidate_secctx(struct inode *inode);
 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
@@ -1545,7 +1576,7 @@ static inline int security_secctx_to_secid(const char *secdata,
 	return -EOPNOTSUPP;
 }
 
-static inline void security_release_secctx(char *secdata, u32 seclen)
+static inline void security_release_secctx(struct lsm_context *cp)
 {
 }