Date: Mon, 10 Jul 2006 13:06:02 -0600 From: Scott Long <scottl@samsco.org> To: Christoph Hellwig <hch@infradead.org> Cc: freebsd-arch@freebsd.org, freebsd-current@freebsd.org, Craig Rodrigues <rodrigc@crodrigues.org> Subject: Re: [RFC] mount can figure out fstype automatically Message-ID: <44B2A51A.4040103@samsco.org> In-Reply-To: <20060708174606.GA29602@infradead.org> References: <20060708152801.GA3671@crodrigues.org> <44AFD7DF.8090002@errno.com> <20060708174606.GA29602@infradead.org>
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Christoph Hellwig wrote: > On Sat, Jul 08, 2006 at 09:05:51AM -0700, Sam Leffler wrote: > >>Linux has -t auto; haven't looked at how it works. > > > It's implemented in mount(8). It has a table of magic numbers and offsets > and tries all of them in a well defined order. If everything fails it > tries a few heuristics whether the filesystems might be a FAT filesystem > as thos don't have magic numbers. > So in your opinion and experience, what are the pros and cons of maintaining a table of magic numbers? Scott
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