From: Michael Halcrow <mhalcrow@google.com>
Date: Wed, 8 Apr 2015 04:19:27 +0000 (-0400)
Subject: ext4 crypto: add encryption xattr support
X-Git-Tag: KARO-TXA5-2015-06-26~116^2~15
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=814f8ace2d7f1ed9fa4f772272c2d88429c33a88;p=karo-tx-linux.git

ext4 crypto: add encryption xattr support

Change-Id: Icec301ab73c83e647c184f3b33aa0be76228dfcc
Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 29bedf5589f6..ddc0957760ba 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -23,6 +23,7 @@
 #define EXT4_XATTR_INDEX_SECURITY	        6
 #define EXT4_XATTR_INDEX_SYSTEM			7
 #define EXT4_XATTR_INDEX_RICHACL		8
+#define EXT4_XATTR_INDEX_ENCRYPTION		9
 
 struct ext4_xattr_header {
 	__le32	h_magic;	/* magic number for identification */
@@ -98,6 +99,8 @@ extern const struct xattr_handler ext4_xattr_user_handler;
 extern const struct xattr_handler ext4_xattr_trusted_handler;
 extern const struct xattr_handler ext4_xattr_security_handler;
 
+#define EXT4_XATTR_NAME_ENCRYPTION_CONTEXT "c"
+
 extern ssize_t ext4_listxattr(struct dentry *, char *, size_t);
 
 extern int ext4_xattr_get(struct inode *, int, const char *, void *, size_t);