From: Christoph Hellwig <h...@lst.de>
When dmg_read_chunk encounters an uncompressed chunk it currently
calls read without any previous adjustment of the file postion.
This seems very wrong, and the "reference" implementation in
dmg2img does a search to the same offset as done in the various
compression cases, so do the same here.
Signed-off-by: Christoph Hellwig <h...@lst.de>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
block/dmg.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/block/dmg.c b/block/dmg.c
index d5c1a68..02a3d67 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -239,7 +239,8 @@ static inline int dmg_read_chunk(BDRVDMGState *s,int
sector_num)
return -1;
break; }
case 1: /* copy */
- ret = read(s->fd, s->uncompressed_chunk, s->lengths[chunk]);
+ ret = pread(s->fd, s->uncompressed_chunk, s->lengths[chunk],
+ s->offsets[chunk]);
if (ret != s->lengths[chunk])
return -1;
break;
--
1.6.6.1
