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Date: Mon, 8 Jul 1996 06:03:09 -0500 (CDT)
From: Alex Nash <nash@mcs.net>
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>  2) Is not the function ftok() system call, used in SYSTEM V IPC, supported by
>     FREEBSD ?  It is not present in any of the header files.    
> 
> It's there for me in /usr/include/sys/ipc.h --
> 
> key_t ftok __P((const char *, int));
> 
> but I'm running -current, not 2.1.0-RELEASE.

The ftok() prototype is in -stable:

  1.5.4.2 Mon Jun 3 10:44:25 1996 by joerg 
  Branch: RELENG_2_1_0
  Diffs to 1.5.4.1 ; Diffs to 1.8 

  Merge from HEAD: add a prototype for ftok().
 
Alex