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| author | Sergei Antonov <saproj@gmail.com> | 2014-06-06 23:36:28 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-07 01:08:10 +0200 |
| commit | 2cd282a1bc6b9d111b8beee63bea0af735a8a1aa (patch) | |
| tree | 80dff1bb5f089868bdbee433b0308098b2c2e6b4 /fs/hfsplus/hfsplus_raw.h | |
| parent | fs/hfsplus/wrapper.c: replace min/casting by min_t (diff) | |
| download | linux-2cd282a1bc6b9d111b8beee63bea0af735a8a1aa.tar.xz linux-2cd282a1bc6b9d111b8beee63bea0af735a8a1aa.zip | |
hfsplus: fix "unused node is not erased" error
Zero newly allocated extents in the catalog tree if volume attributes
tell us to. Not doing so we risk getting the "unused node is not
erased" error. See kHFSUnusedNodeFix flag in Apple's source code for
reference.
There was a previous commit clearing the node when it is freed: commit
899bed05e9f6 ("hfsplus: fix issue with unzeroed unused b-tree nodes").
But it did not handle newly allocated extents (this patch fixes it).
And it zeroed nodes in all trees unconditionally which is an overkill.
This patch adds a condition and also switches to 'tree->node_size' as a
simpler method of getting the length to zero.
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Cc: Anton Altaparmakov <aia21@cam.ac.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Cc: Kyle Laracey <kalaracey@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hfsplus/hfsplus_raw.h')
| -rw-r--r-- | fs/hfsplus/hfsplus_raw.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 5a126828d85e..8298d0985f81 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -144,6 +144,7 @@ struct hfsplus_vh { #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) #define HFSPLUS_VOL_JOURNALED (1 << 13) #define HFSPLUS_VOL_SOFTLOCK (1 << 15) +#define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31) /* HFS+ BTree node descriptor */ struct hfs_bnode_desc { |