apparmor: cleanup rename XXX_file_context() to XXX_file_ctx()

Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/include/file.h

@@ -30,6 +30,8 @@ struct path;
 				 AA_MAY_CHMOD | AA_MAY_CHOWN | AA_MAY_LOCK | \
 				 AA_EXEC_MMAP | AA_MAY_LINK)
 
+#define file_ctx(X) ((struct aa_file_ctx *)(X)->f_security)
+
 /* struct aa_file_ctx - the AppArmor context the file was opened in
  * @perms: the permission the file was opened with
  *
@@ -42,21 +44,26 @@ struct aa_file_ctx {
 };
 
 /**
- * aa_alloc_file_context - allocate file_ctx
+ * aa_alloc_file_ctx - allocate file_ctx
+ * @label: initial label of task creating the file
  * @gfp: gfp flags for allocation
  *
  * Returns: file_ctx or NULL on failure
  */
-static inline struct aa_file_ctx *aa_alloc_file_context(gfp_t gfp)
+static inline struct aa_file_ctx *aa_alloc_file_ctx(gfp_t gfp)
 {
-	return kzalloc(sizeof(struct aa_file_ctx), gfp);
+	struct aa_file_ctx *ctx;
+
+	ctx = kzalloc(sizeof(struct aa_file_ctx), gfp);
+
+	return ctx;
 }
 
 /**
- * aa_free_file_context - free a file_ctx
+ * aa_free_file_ctx - free a file_ctx
  * @ctx: file_ctx to free  (MAYBE_NULL)
  */
-static inline void aa_free_file_context(struct aa_file_ctx *ctx)
+static inline void aa_free_file_ctx(struct aa_file_ctx *ctx)
 {
 	if (ctx)
 		kzfree(ctx);

security/apparmor/lsm.c

@@ -398,9 +398,9 @@ static int apparmor_file_alloc_security(struct file *file)
 
 	/* freed by apparmor_file_free_security */
 	struct aa_profile *profile = begin_current_profile_crit_section();
-	file->f_security = aa_alloc_file_context(GFP_KERNEL);
-	if (!file->f_security)
-		return -ENOMEM;
+	file->f_security = aa_alloc_file_ctx(GFP_KERNEL);
+	if (!file_ctx(file))
+		error = -ENOMEM;
 	end_current_profile_crit_section(profile);
 
 	return error;
@@ -408,9 +408,7 @@ static int apparmor_file_alloc_security(struct file *file)
 
 static void apparmor_file_free_security(struct file *file)
 {
-	struct aa_file_ctx *ctx = file->f_security;
-
-	aa_free_file_context(ctx);
+	aa_free_file_ctx(file_ctx(file));
 }
 
 static int common_file_perm(const char *op, struct file *file, u32 mask)