ocfs2: add ext2 attributes

Support immutable, and other attributes.

Some renaming and other minor fixes done by myself.

Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index c5b1ac5..3330a5d 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -114,6 +114,26 @@
 #define OCFS2_CHAIN_FL		(0x00000400)	/* Chain allocator */
 #define OCFS2_DEALLOC_FL	(0x00000800)	/* Truncate log */
 
+/* Inode attributes, keep in sync with EXT2 */
+#define OCFS2_SECRM_FL		(0x00000001)	/* Secure deletion */
+#define OCFS2_UNRM_FL		(0x00000002)	/* Undelete */
+#define OCFS2_COMPR_FL		(0x00000004)	/* Compress file */
+#define OCFS2_SYNC_FL		(0x00000008)	/* Synchronous updates */
+#define OCFS2_IMMUTABLE_FL	(0x00000010)	/* Immutable file */
+#define OCFS2_APPEND_FL		(0x00000020)	/* writes to file may only append */
+#define OCFS2_NODUMP_FL		(0x00000040)	/* do not dump file */
+#define OCFS2_NOATIME_FL	(0x00000080)	/* do not update atime */
+#define OCFS2_DIRSYNC_FL	(0x00010000)	/* dirsync behaviour (directories only) */
+
+#define OCFS2_FL_VISIBLE	(0x000100FF)	/* User visible flags */
+#define OCFS2_FL_MODIFIABLE	(0x000100FF)	/* User modifiable flags */
+
+/*
+ * ioctl commands
+ */
+#define OCFS2_IOC_GETFLAGS	_IOR('f', 1, long)
+#define OCFS2_IOC_SETFLAGS	_IOW('f', 2, long)
+
 /*
  * Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
  */
@@ -399,7 +419,9 @@
 	__le32 i_atime_nsec;
 	__le32 i_ctime_nsec;
 	__le32 i_mtime_nsec;
-/*70*/	__le64 i_reserved1[9];
+	__le32 i_attr;
+	__le32 i_reserved1;
+/*70*/	__le64 i_reserved2[8];
 /*B8*/	union {
 		__le64 i_pad1;		/* Generic way to refer to this
 					   64bit union */