[oe-commits] [openembedded-core] 11/47: filemap: fix skip logic
git at git.openembedded.org
git at git.openembedded.org
Sun May 21 14:04:00 UTC 2017
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rpurdie pushed a commit to branch master-next
in repository openembedded-core.
commit 87b8f4213f2d3e8664e49fa47dcbad9ad75f526e
Author: Ed Bartosh <ed.bartosh at linux.intel.com>
AuthorDate: Mon May 15 10:20:33 2017 +0300
filemap: fix skip logic
Fixed bug in processing 'skip' parameter:
don't read input file if end of bmap block is less than skip
Simplified logic of positioning to the start of data inside a
partially skipped bmap block.
Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
Signed-off-by: Ross Burton <ross.burton at intel.com>
---
scripts/lib/wic/filemap.py | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/scripts/lib/wic/filemap.py b/scripts/lib/wic/filemap.py
index 1f1aacc..585b7ea 100644
--- a/scripts/lib/wic/filemap.py
+++ b/scripts/lib/wic/filemap.py
@@ -545,11 +545,14 @@ def sparse_copy(src_fname, dst_fname, offset=0, skip=0, api=None):
start = first * fmap.block_size
end = (last + 1) * fmap.block_size
+ if skip >= end:
+ continue
+
if start < skip < end:
- fmap._f_image.seek(skip, os.SEEK_SET)
- else:
- fmap._f_image.seek(start, os.SEEK_SET)
- dst_file.seek(offset + start, os.SEEK_SET)
+ start = skip
+
+ fmap._f_image.seek(start, os.SEEK_SET)
+ dst_file.seek(offset + start - skip, os.SEEK_SET)
chunk_size = 1024 * 1024
to_read = end - start
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