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34 lines
834 B
Plaintext
34 lines
834 B
Plaintext
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import sys, os, errno, platform
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# Pass an _empty_ file
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if len(sys.argv) != 2:
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sys.exit(1)
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if not hasattr(os, 'SEEK_DATA'):
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# Not available on python 2, or on darwin python 3
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# Also Darwin swaps SEEK_DATA/SEEK_HOLE definitions
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if platform.system() == "Darwin":
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SEEK_DATA = 4
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else:
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SEEK_DATA = 3 # Valid on Linux, FreeBSD, Solaris
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else:
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SEEK_DATA = os.SEEK_DATA
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# Even if os supports SEEK_DATA or SEEK_HOLE,
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# the file system may not, in which case it would report
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# current and eof positions respectively.
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# Therefore work with an empty file,
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# ensuring SEEK_DATA returns ENXIO (no more data)
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try:
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fd = os.open(sys.argv[1], os.O_RDONLY)
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except:
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sys.exit(1)
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try:
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data = os.lseek(fd, 0, SEEK_DATA)
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except OSError as e:
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if e.errno == errno.ENXIO:
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sys.exit(0)
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sys.exit(1)
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