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Copyright 1991 David Jurgens |
TC: int lock( int handle, long offset, long length )
- prototype in io.h
- locks arbitrary, non-overlapping regions of any file (DOS 3.X),
preventing reads/writes to those regions
- returns 0 on success, else -1 on error
- all locks must be released before program termination
- MS C uses locking()
- see unlock()
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lock (C) |
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