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wic: fix bug in sparse_copy 

sparse_copy creates output file that is smaller than input
file when input file ends with unmapped blocks.

Used truncate(<input file size>) when output file is created
to ensure the size of output file will always be equal to
the size of input file.

(From OE-Core rev: 567186f995302a095a771baede4ff5034d1d1862)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ed Bartosh 2017-03-22 15:42:28 +02:00 committed by Richard Purdie
parent 627952a234
commit b78c564cca
1 changed files with 1 additions and 0 deletions
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1
scripts/lib/wic/filemap.py
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@ -537,6 +537,7 @@ def sparse_copy(src_fname, dst_fname, offset=0, skip=0):
dst_file = open(dst_fname, 'r+b')
except IOError:
dst_file = open(dst_fname, 'wb')
dst_file.truncate(os.path.getsize(src_fname))
for first, last in fmap.get_mapped_ranges(0, fmap.blocks_cnt):
start = first * fmap.block_size