constify security_path_truncate()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

include/linux/lsm_hooks.h

@@ -1366,7 +1366,7 @@ union security_list_options {
 	int (*path_rmdir)(struct path *dir, struct dentry *dentry);
 	int (*path_mknod)(struct path *dir, struct dentry *dentry,
 				umode_t mode, unsigned int dev);
-	int (*path_truncate)(struct path *path);
+	int (*path_truncate)(const struct path *path);
 	int (*path_symlink)(struct path *dir, struct dentry *dentry,
 				const char *old_name);
 	int (*path_link)(struct dentry *old_dentry, struct path *new_dir,

include/linux/security.h

@@ -1447,7 +1447,7 @@ int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode);
 int security_path_rmdir(struct path *dir, struct dentry *dentry);
 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
 			unsigned int dev);
-int security_path_truncate(struct path *path);
+int security_path_truncate(const struct path *path);
 int security_path_symlink(struct path *dir, struct dentry *dentry,
 			  const char *old_name);
 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
@@ -1481,7 +1481,7 @@ static inline int security_path_mknod(struct path *dir, struct dentry *dentry,
 	return 0;
 }
 
-static inline int security_path_truncate(struct path *path)
+static inline int security_path_truncate(const struct path *path)
 {
 	return 0;
 }

security/apparmor/lsm.c

@@ -269,7 +269,7 @@ static int apparmor_path_mknod(struct path *dir, struct dentry *dentry,
 	return common_perm_create(OP_MKNOD, dir, dentry, AA_MAY_CREATE, mode);
 }
 
-static int apparmor_path_truncate(struct path *path)
+static int apparmor_path_truncate(const struct path *path)
 {
 	struct path_cond cond = { d_backing_inode(path->dentry)->i_uid,
 				  d_backing_inode(path->dentry)->i_mode

security/security.c

@@ -478,7 +478,7 @@ int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 }
 EXPORT_SYMBOL(security_path_rename);
 
-int security_path_truncate(struct path *path)
+int security_path_truncate(const struct path *path)
 {
 	if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 		return 0;

security/tomoyo/tomoyo.c

@@ -150,7 +150,7 @@ static int tomoyo_inode_getattr(const struct path *path)
  *
  * Returns 0 on success, negative value otherwise.
  */
-static int tomoyo_path_truncate(struct path *path)
+static int tomoyo_path_truncate(const struct path *path)
 {
 	return tomoyo_path_perm(TOMOYO_TYPE_TRUNCATE, path, NULL);
 }