Date: Wed, 1 Jun 2005 21:23:23 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: delphij@delphij.net Cc: freebsd-arch@freebsd.org Subject: Re: [PATCH RFC] Add a macro for null mount options to sbin/mount* Message-ID: <20050601211628.V96009@delplex.bde.org> In-Reply-To: <1117613456.771.16.camel@spirit> References: <1117613456.771.16.camel@spirit>
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On Wed, 1 Jun 2005, Xin LI wrote:
> In our mount* utilities, the null mount option, which is usually be used
> as a terminator of an option vector, is defined with some hand-rolled
> terms, e.g.: {NULL}, {NULL, 0, 0, 0}, etc.
"{ NULL }" is the documented way. See getmntopts.3.
> I think it would be nice to have a new macro to deal with this, say,
> MOPT_NULL, which would be extended to {NULL, 0, 0, 0}, which can act as
> an explicit initialize. And in my opinion, something like:
>
> %%%
> opt = {
> MOPT_STD,
> MOPT_NULL
> };
> %%%
MOPT_NULL is a poor name. It is not a null option, but a terminator that
happens to have nulls in it.
Bruce
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