linux-kernel - [PATCH 22/22][RFC] Unionfs: Include file

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Date:	Thu, 31 Aug 2006 22:02:22 -0400
From:	Josef Sipek <jsipek@...sunysb.edu>
To:	linux-kernel@...r.kernel.org
Cc:	linux-fsdevel@...r.kernel.org, hch@...radead.org, akpm@...l.org,
	viro@....linux.org.uk
Subject: [PATCH 22/22][RFC] Unionfs: Include file

From: Josef "Jeff" Sipek <jsipek@...sunysb.edu>

Global include file - can be included from userspace by utilities.

Signed-off-by: Josef "Jeff" Sipek <jsipek@...sunysb.edu>
Signed-off-by: David Quigley <dquigley@....cs.sunysb.edu>
Signed-off-by: Erez Zadok <ezk@...sunysb.edu>

---

 include/linux/union_fs.h |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff -Nur -x linux-2.6-git/Documentation/dontdiff linux-2.6-git/include/linux/union_fs.h linux-2.6-git-unionfs/include/linux/union_fs.h
--- linux-2.6-git/include/linux/union_fs.h	1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6-git-unionfs/include/linux/union_fs.h	2006-08-31 19:04:04.000000000 -0400
@@ -0,0 +1,20 @@
+#ifndef _LINUX_UNION_FS_H
+#define _LINUX_UNION_FS_H
+
+#define UNIONFS_VERSION  "2.0"
+/*
+ * DEFINITIONS FOR USER AND KERNEL CODE:
+ * (Note: ioctl numbers 1--9 are reserved for fistgen, the rest
+ *  are auto-generated automatically based on the user's .fist file.)
+ */
+# define UNIONFS_IOCTL_INCGEN		_IOR(0x15, 11, int)
+# define UNIONFS_IOCTL_QUERYFILE	_IOR(0x15, 15, int)
+
+/* We don't support normal remount, but unionctl uses it. */
+# define UNIONFS_REMOUNT_MAGIC		0x4a5a4380
+
+/* should be at least LAST_USED_UNIONFS_PERMISSION<<1 */
+#define MAY_NFSRO			16
+
+#endif /* _LINUX_UNIONFS_H */
+
-
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