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-rw-r--r--scripts/lib/wic/filemap.py6
1 files changed, 5 insertions, 1 deletions
diff --git a/scripts/lib/wic/filemap.py b/scripts/lib/wic/filemap.py
index 764dbbe588..6d11355a18 100644
--- a/scripts/lib/wic/filemap.py
+++ b/scripts/lib/wic/filemap.py
@@ -549,7 +549,11 @@ def sparse_copy(src_fname, dst_fname, skip=0, seek=0,
549 dst_file = open(dst_fname, 'r+b') 549 dst_file = open(dst_fname, 'r+b')
550 except IOError: 550 except IOError:
551 dst_file = open(dst_fname, 'wb') 551 dst_file = open(dst_fname, 'wb')
552 dst_file.truncate(os.path.getsize(src_fname)) 552 if length:
553 dst_size = length + seek
554 else:
555 dst_size = os.path.getsize(src_fname) + seek - skip
556 dst_file.truncate(dst_size)
553 557
554 written = 0 558 written = 0
555 for first, last in fmap.get_mapped_ranges(0, fmap.blocks_cnt): 559 for first, last in fmap.get_mapped_ranges(0, fmap.blocks_cnt):