file and record locking questions (general)

[Dave Eisen]

In article <1991Mar29.124756.18856 at news.cs.indiana.edu> royle at tope.cs.indiana.edu (Keenan Royle) writes:
>yes it is portable. (not just Ultrix)
>
>flock locks a file.
>lockf and fcntl can lock records in files (or the whole file).
>lockf is just a nice front-end to fcntl.
>
>All locks are advisory.
>
>Ultrix is BSD based.  Portablity to system 5 may be trickier.
>

Yes it might be. The locking mechanisms (using lockf and fcntl) in 
SCO Xenix are *not* advisory locks, they are out and out LOCKS. I believe
it's the same in System V.

 

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Dave Eisen                      
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