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e4c22ef6c7
disk_util sometimes bails out during build with an ASCII conversion
error:
Traceback (most recent call last):
File "/mnt/host/source/src/scripts/build_library/disk_util", line 1114, in <module>
main(sys.argv)
File "/mnt/host/source/src/scripts/build_library/disk_util", line 1110, in main
options.func(options)
File "/mnt/host/source/src/scripts/build_library/disk_util", line 779, in Verity
Tune2fsReadWrite(options, part, disable_rw=True)
File "/mnt/host/source/src/scripts/build_library/disk_util", line 716, in Tune2fsReadWrite
image.write(chr(flag_value))
UnicodeEncodeError: 'ascii' codec can't encode character '\xff' in position 0: ordinal not in range(128)
Curiously, the error does not reproduce every time (though the code
leading to the error is straightforward).
This change converts the integer to be written to a byte array (of size
1) instead of using chr(). Also, the file to be written is explicitly
opened in binary mode.
Signed-off-by: Thilo Fromm <thilo@kinvolk.io>