linux-kernel - [PATCH 03/24] ubifs: Define UBIFS crypto context xattr

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Message-Id: <1480627271-10441-4-git-send-email-richard@nod.at>
Date:   Thu,  1 Dec 2016 22:20:50 +0100
From:   Richard Weinberger <richard@....at>
To:     linux-mtd@...ts.infradead.org
Cc:     david@...ma-star.at, tytso@....edu, dedekind1@...il.com,
        ebiggers@...gle.com, mhalcrow@...gle.com, adrian.hunter@...el.com,
        linux-kernel@...r.kernel.org, hch@...radead.org,
        linux-fsdevel@...r.kernel.org, jaegeuk@...nel.org,
        dengler@...utronix.de, sbabic@...x.de, wd@...x.de,
        Richard Weinberger <richard@....at>
Subject: [PATCH 03/24] ubifs: Define UBIFS crypto context xattr

Like ext4 UBIFS will store the crypto context in a xattr
attribute.

Signed-off-by: Richard Weinberger <richard@....at>
---
 fs/ubifs/ubifs-media.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fs/ubifs/ubifs-media.h b/fs/ubifs/ubifs-media.h
index e24380cf46ed..d47e9569b3de 100644
--- a/fs/ubifs/ubifs-media.h
+++ b/fs/ubifs/ubifs-media.h
@@ -301,6 +301,13 @@ enum {
 #define UBIFS_MAX_NODE_SZ UBIFS_MAX_INO_NODE_SZ
 
 /*
+ * xattr name of UBIFS encryption context, we don't use a prefix
+ * nor a long name to not waste space on the flash.
+ */
+#define UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT "c"
+
+
+/*
  * On-flash inode flags.
  *
  * UBIFS_COMPR_FL: use compression for this inode
-- 
2.7.3