Subject: Re: Large inodes for ffs
To: Bill Studenmund <firstname.lastname@example.org>
From: Chris G. Demetriou <email@example.com>
Date: 03/24/1999 16:38:34
Bill Studenmund <firstname.lastname@example.org> writes:
> Why is the declaration (in syscalls.master) "int sys_fcntl(int fd, int
> cmd, ... void *arg);" - the dots make it look like it's varyarg'd when it
As noted earlier, it's kinda because "arg is ignored," but, really,
worse, because "arg is optional."
In terms of why it looks like that in syscalls.master, it's because:
* the args structure needs to know about the optional
* the syscall lint stub, which is automatically generated from
a file derived from syscalls.master, needs to know that
the last argument is entirely optional.
In reality, it _is_ varargs, but handling it is done with the
knowledge and hack. since it's just that one extra argument, All Will
Turn Out OK.
> More in a reply to your earlier message. :-)
Is this something you've not sent yet, or that i have missed? 8-)
Chris Demetriou - email@example.com - http://www.netbsd.org/People/Pages/cgd.html
Disclaimer: Not speaking for NetBSD, just expressing my own opinion.