Date: Wed, 26 Jan 2005 08:41:14 -0500 From: Christopher Sean Hilton <chris@vindaloo.com> To: Robert Blacquiere <freebsd@guldan.demon.nl> Cc: freebsd-mobile@freebsd.org Subject: Re: static umass numbering Message-ID: <1106746874.66282.40.camel@dagobah.vindaloo.com> In-Reply-To: <20050118103612.GA61467@bombur.guldan.demon.nl> References: <20050118103612.GA61467@bombur.guldan.demon.nl>
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On Tue, 2005-01-18 at 11:36 +0100, Robert Blacquiere wrote:
> Hi folks,
>
> I have got a couple of usb mass storage devices which work nicely with FreeBSD.
> But they are numbered chronological on insertion. I would like some sort of
> static numbering scheme for easing up for example automounting.
> Now i use a hand script which take de base da[0-9]+ numbering as var but hate
> this way of working.
I'm not sure what you are trying to do but I handled this in 5.3 by
ensuring that the slice and partition layout on all such devices was
uniform. Then I installed a uniformly named script on each drive. The
script can be tailored to provide whatever function the drive supports.
I use the following layout:
Slice 1: MSDOS
Slice 2: FreeBSD
Partition e: General purpose for automounting
Partitions a,d,f-h: special purpose
In /etc/amd.map and /etc/fstab I have entries to mount the MSDOS and
FreeBSD partitions from each possible drive:
/dev/da0s1 --> /amd/msdos0
/dev/da0s2e --> /amd/da0
/dev/da1s1 --> /amd/msdos1
/dev/da1s1e --> /amd/da1
Finally I arrange for devd to run a script from the drive when a new
da[0-9]+ device is attached to the kernel. The devd knows which drive
was attached (da[0-9]+) and can pass that into the script:
#! /bin/sh
...
device=$1; shift
## Use this test to automount the device.
if test -d /amd/${device}/.; then
## Now see if this device has an autorun.sh script for use
## on attach.
if test -f /amd/${device}/autorun.sh; then
(cd /amd/${device} && sh autorun.sh ${device})
fi
fi
Up to here it's basic shell scripting. The problem with all this is that
it all happens as root which I didn't want. So I wrote a daemon and
client which allows the root owned devd process to trigger a user owned
process when a message got passed on a unix domain socket.
-- chris
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