Date: Fri, 21 May 2010 23:08:14 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Gary Kline <kline@thought.org> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: how do i use a memory stick on freebsd? Message-ID: <20100521210814.GA68796@slackbox.erewhon.net> In-Reply-To: <20100521190340.GA66314@thought.org> References: <20100521190340.GA66314@thought.org>
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On Fri, May 21, 2010 at 12:03:42PM -0700, Gary Kline wrote:
>=20
> guys,=20
>=20
> my wife emptied a bunch of files onto her memory stick; the pc
> is not here. i have never used one of these devices before and
> want to know how, if it is possible, to read her dos/lose
> material from my bsd system. 7.3, dell, plenty of disk, and yes,
> i know where the usb slot it!
>=20
> do i need to put something in /usr/rc.conf? build a driver or
> utility? or what?
You can mount it as root without having to do anything special. Plug in the
USB stick, and watch dmesg output to see which device appears. Say you see a
device 'da0' appear. Then look in /dev/ to see if there are any slices on i=
t;
'ls /dev/da0*'. You'll probably see one slice, e.g. /dev/da0s1. Then use
mount_msdosfs(8) to mount it somewhere.
If you want to mount as a regular user, things are somewhat more
involved. First, you have to set the sysctl 'vfs.urermount=3D1'. This has t=
o be
done as root, of course. Then you have to make sure that the user in questi=
on
has read/write access to the devices. Generally, I do that by creating a gr=
oup
called 'usb' with the pw(8) utility, and making users that need access to U=
SB
devices a member of that group. Then I add some lines to /etc/devfs.rules to
make the usb and related devices accessible to that group;
[my_rules=3D10]
add path 'da*' mode 0660 group usb
add path 'msdosfs/*' mode 0660 group usb
add path 'usb/*' mode 0660 group usb
add path 'ugen*' mode 0660 group usb
The latter two lines are to make e.g. digital cameras and scanners accessib=
le.
This ruleset has to be activated in /etc/rc.conf;
devfs_system_ruleset=3D"my_rules"
You'll need to reboot the system or restart devfs for this to take
effect. With these adaptations, you can mount USB drives as a normal user.
Roland
--=20
R.F.Smith http://www.xs4all.nl/~rsmith/
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