[PATCH] hfsplus: don't modify journaled volume

Access to a journaled HFS+ volume is not officially supported under Linux, so
mount such a volume read-only, but users can override this behaviour using the
"force" mount option.

The minimum requirement to relax this check is to at least check that the
journal is empty and so nothing needs to be replayed to make sure the volume
is consistent.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 5 deletions

diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h
index 5bad37cfdb29..b4fbed633219 100644
--- a/fs/hfsplus/hfsplus_raw.h
+++ b/fs/hfsplus/hfsplus_raw.h
@@ -123,11 +123,13 @@ struct hfsplus_vh {
 } __packed;
 
 /* HFS+ volume attributes */
-#define HFSPLUS_VOL_UNMNT     (1 << 8)
-#define HFSPLUS_VOL_SPARE_BLK (1 << 9)
-#define HFSPLUS_VOL_NOCACHE   (1 << 10)
-#define HFSPLUS_VOL_INCNSTNT  (1 << 11)
-#define HFSPLUS_VOL_SOFTLOCK  (1 << 15)
+#define HFSPLUS_VOL_UNMNT               (1 << 8)
+#define HFSPLUS_VOL_SPARE_BLK           (1 << 9)
+#define HFSPLUS_VOL_NOCACHE             (1 << 10)
+#define HFSPLUS_VOL_INCNSTNT            (1 << 11)
+#define HFSPLUS_VOL_NODEID_REUSED       (1 << 12)
+#define HFSPLUS_VOL_JOURNALED           (1 << 13)
+#define HFSPLUS_VOL_SOFTLOCK            (1 << 15)
 
 /* HFS+ BTree node descriptor */
 struct hfs_bnode_desc {