Date: Thu, 18 Jan 2007 17:14:49 +0300 From: "Andrew Pantyukhin" <infofarmer@FreeBSD.org> To: "Craig Rodrigues" <rodrigc@crodrigues.org> Cc: freebsd-current@freebsd.org, freebsd-arch@freebsd.org Subject: Re: [RFC] mount(8) can figure out fstype Message-ID: <cb5206420701180614n3eb5bb6cla6c9fdf9ee6f1a9@mail.gmail.com> In-Reply-To: <20070118134936.GA7391@crodrigues.org> References: <20070118134936.GA7391@crodrigues.org>
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On 1/18/07, Craig Rodrigues <rodrigc@crodrigues.org> wrote: > Hi, > > This is a different version of the patch I posted here: > http://lists.freebsd.org/pipermail/freebsd-arch/2006-July/005439.html > > One of the pet peeves I have with FreeBSD is that > if I have a device with a local filesystem that I want to mount, > I need to explicitly know what type of filesystem is on the > device in order to mount it from the command-line. > > For example, > > mount -t cd9660 > mount -t udf > mount -t ext2fs > mount -t msdosfs > > Where this is particularly annoying is if I have multiple > USB thumb drives with different filesystems on them. > > What I usually end up doing is something like: > file - < /dev/ad0s4 > > to figure out the filesystem type, and then mount -t [whatever] to mount it. > > What I would like to do is: > > mount /dev/ad0s4 /mnt > > and if I do not specify a filesystem type with -t, the mount > program should "magically" figure out how to mount the disk. > This is closer to how the mount program behaves on Linux for example. > > In this patch, I only modified the userland mount program. > If the user does not specify "-t vfstype" to mount, > the mount program gets a list of local filesystems from the vfs.conflist > sysctl. It then tries to mount the filesystem, always > starting with "ufs", and then iterating through the list if > the nmount() fails with EINVAL. > > Using this patch, I have been able to do: > mount /dev/blah /mnt > > and mount a UFS, cd9660, or FAT filesystem, depending on what filesystem > is on the /dev/blah device. > > Comments? I would love to have this usability enhancement around! 1. Are there any (what are the) security implications? 2. "mount -t auto" might be closer to POLA I might have other comments later :) Thanks Craig!
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