[PATCH] reiserfs: Check if attrs are enabled for attr ioctls

ReiserFS currently will allow the user to set/get attrs for files
regardless if they are enabled. The patch checks to see if they are
enabled, and returns -NOTTY if they are not.

ext[23] doesn't need this check because attrs are always enabled.

Signed-off-by: Jeff Mahoney <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/reiserfs/ioctl.c

···
 	/* following two cases are taken from fs/ext2/ioctl.c by Remy
 	   Card ([e-mail]) */
 	case REISERFS_IOC_GETFLAGS:
+		if (!reiserfs_attrs (inode->i_sb))
+			return -ENOTTY;
+
 		flags = REISERFS_I(inode) -> i_attrs;
 		i_attrs_to_sd_attrs( inode, ( __u16 * ) &flags );
 		return put_user(flags, (int __user *) arg);
 	case REISERFS_IOC_SETFLAGS: {
+		if (!reiserfs_attrs (inode->i_sb))
+			return -ENOTTY;
+
 		if (IS_RDONLY(inode))
 			return -EROFS;