Date: Tue, 15 Feb 2011 09:45:22 +0100 From: Gary Jennejohn <gljennjohn@googlemail.com> To: "Julian H. Stacey" <jhs@berklix.com> Cc: hackers@freebsd.org Subject: Re: memstick.img is bloated with 7% 2K blocks of nulls Message-ID: <20110215094522.383e5c47@ernst.jennejohn.org> In-Reply-To: <201102150019.p1F0Jjfc088901@fire.js.berklix.net> References: <20110212170526.00004cab@unknown> <201102150019.p1F0Jjfc088901@fire.js.berklix.net>
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On Tue, 15 Feb 2011 01:19:45 +0100
"Julian H. Stacey" <jhs@berklix.com> wrote:
> Could author phk@FreeBSD.ORG cc'd (or someone else if they are clear)
> please explain what cmdline is ?
> Possibly commit an appended // comment after "int cmdline = 0;"
> (in line 76 of 8.1 & current src/sbin/mdconfig/mdconfig.c) wgat it's for ?
>
> (cmdline seems in most places to maybe be an enum { 1
> 2 3 } for { a d l } alternate forms of command mdconfig,
> ... & yet case 'd': sets cmdline = 3 not 2 ?
> (& 't' & 'f' sets cmdline=2 ; not 1. Puzzling.
>
It's simply a state machine to ensure that mutually exclusive options
aren't used together. See the manpage; it's pretty clear from it that
only certain combinations of options are allowed.
--
Gary Jennejohn
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