16 lines
356 B
Python
16 lines
356 B
Python
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import struct, fcntl
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def writelock(f):
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_lock(f, fcntl.F_WRLCK)
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def readlock(f):
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_lock(f, fcntl.F_RDLCK)
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def unlock(f):
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_lock(f, fcntl.F_UNLCK)
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def _lock(f, op):
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dummy = fcntl.fcntl(f.fileno(), fcntl.F_SETLKW,
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struct.pack('2h8l', op,
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0, 0, 0, 0, 0, 0, 0, 0, 0))
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