On platforms without os.fdatasync (eg. OS-X), use fcntl.F_FULLFSYNC instead #2
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cocagne
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On platforms without os.fdatasync (eg. OS-X), use fcntl.F_FULLFSYNC instead
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Unfortunately, os.fdatasync doesn't exist on OS-X. The fcntl(fd, F_FULLFSYNC) is purported to yield approximately the same results, so provide a fall-back to that if os.fdatasync is found to not exist.