constify chown_common/security_path_chown

Signed-off-by: Al Viro <[e-mail]>

fs/open.c

···
 	return sys_fchmodat(AT_FDCWD, filename, mode);
 }
 
-static int chown_common(struct path *path, uid_t user, gid_t group)
+static int chown_common(const struct path *path, uid_t user, gid_t group)
 {
 	struct inode *inode = path->dentry->d_inode;
 	struct inode *delegated_inode = NULL;

include/linux/lsm_hooks.h

···
 				struct path *new_dir,
 				struct dentry *new_dentry);
 	int (*path_chmod)(struct path *path, umode_t mode);
-	int (*path_chown)(struct path *path, kuid_t uid, kgid_t gid);
+	int (*path_chown)(const struct path *path, kuid_t uid, kgid_t gid);
 	int (*path_chroot)(struct path *path);
 #endif
 

include/linux/security.h

···
 			 struct path *new_dir, struct dentry *new_dentry,
 			 unsigned int flags);
 int security_path_chmod(struct path *path, umode_t mode);
-int security_path_chown(struct path *path, kuid_t uid, kgid_t gid);
+int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
 int security_path_chroot(struct path *path);
 #else	/* CONFIG_SECURITY_PATH */
 static inline int security_path_unlink(struct path *dir, struct dentry *dentry)
···
 	return 0;
 }
 
-static inline int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
+static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 {
 	return 0;
 }

security/apparmor/lsm.c

···
 	return common_perm_mnt_dentry(OP_CHMOD, path->mnt, path->dentry, AA_MAY_CHMOD);
 }
 
-static int apparmor_path_chown(struct path *path, kuid_t uid, kgid_t gid)
+static int apparmor_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 {
 	struct path_cond cond =  { d_backing_inode(path->dentry)->i_uid,
 				   d_backing_inode(path->dentry)->i_mode

security/security.c

···
 	return call_int_hook(path_chmod, 0, path, mode);
 }
 
-int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
+int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 {
 	if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 		return 0;

security/tomoyo/tomoyo.c

···
  *
  * Returns 0 on success, negative value otherwise.
  */
-static int tomoyo_path_chown(struct path *path, kuid_t uid, kgid_t gid)
+static int tomoyo_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 {
 	int error = 0;
 	if (uid_valid(uid))