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Re: (fcntl fd F_GETLK ...) from Guile

From: dsmich
Subject: Re: (fcntl fd F_GETLK ...) from Guile
Date: Fri, 31 Aug 2007 10:19:14 -0400

---- Kaloian Doganov <address@hidden> wrote: 
> Is there a way to use fcntl's F_GETLK command from Guile?  According
> to the docs [1], only the following commands are available:
>     F_DUPFD
>     F_GETFD
>     F_SETFD
>     F_GETFL
>     F_SETFL
>     F_GETOWN
>     F_SETOWN
> Neighter F_GETLK nor F_SETLK is there.  Am I missing something?

Yes, Guile seems to be missing those.  These are just numbers, so you can 
probably just:

  (define F_GETLK 5)
  (define F_SETLK 6)

or whatever the proper values are on your platform.

Here is a patch for libguile/filesys.c to add them.  Untested.

--- filesys.c.old       2006-10-03 23:35:07.000000000 -0400
+++ filesys.c   2007-08-31 10:14:01.118281135 -0400
@@ -1732,6 +1732,12 @@
 #ifdef F_SETFL  
   scm_c_define ("F_SETFL", scm_from_long (F_SETFL));
+#ifdef F_GETLK
+  scm_c_define ("F_GETLK", scm_from_long (F_GETLK));
+#ifdef F_SETLK
+  scm_c_define ("F_SETLK", scm_from_long (F_SETLK));
 #ifdef F_GETOWN  
   scm_c_define ("F_GETOWN", scm_from_long (F_GETOWN));


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