[PATCH 1/2] Identify journal info block in volume header.

[Warren Turkal <wt@penguintechs.org>]

The HFS+ support in the kernel currently will mount an HFS+ volume read-only if
the volume header has the attribute bit set that indicates there is a journal.
The kernel does this because there is no support for a journalled HFS+ volume.

The problem is that this is only half of what needs to be checked to see if
there really is a journal. There is also an entry in the volume header that
tells you where to find the journal info block. In the kernel version of the
kernel, this 4 byte block is labeled reserved. This patch identifies the journal
info block in the header.

Signed-off-by: Warren Turkal <wt@penguintechs.org>
---
 fs/hfsplus/hfsplus_raw.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index fe99fe8..14f1dd8 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -94,7 +94,7 @@ struct hfsplus_vh {
 	__be16 version;
 	__be32 attributes;
 	__be32 last_mount_vers;
-	u32 reserved;
+	__be32 journal_info_block;
 
 	__be32 create_date;
 	__be32 modify_date;
-- 
1.5.6.3