Re: [RFC][glibc PATCH] fcntl-linux.h: add new definitions and manual updates for open file description locks

From: Alfred M. Szmidt
Date: Wed Apr 23 2014 - 15:00:39 EST


> Likewise. You infact write that it does get the lock information
> later in the document wrt. F_OFD_GETLK.

Sorry, I disagree here...GETLK is really a misnomer, IMO. TESTLK
would have been a better name.

GETLK are used is to "get the first lock".

It's a way to test whether a particular lock can be applied, and to
return information about a conflicting lock if it can't. If, for
instance there is no conflicting lock, then you don't "get" any
lock information back (l_type just gets reset to F_UNLCK).

While I kinda see your point, it isn't what GETLK does; it really does
get you information about the first lock -- you're not testing
anything. It is also the terminology used in the POSIX standard.
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