Date: Fri, 14 Feb 2014 18:16:10 +0100 From: Roland Smith <rsmith@xs4all.nl> To: B J <va6bmj@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Can't Mount USB Drive As User Under FreeBSD 10 Message-ID: <20140214171610.GA58795@slackbox.erewhon.net> In-Reply-To: <CAP7QzkPx8Q1V8U1wAdBGZkDu-d94wPBZtfYV-R7XHewyCi_SmQ@mail.gmail.com> References: <CAP7QzkPx8Q1V8U1wAdBGZkDu-d94wPBZtfYV-R7XHewyCi_SmQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--45Z9DzgjV8m4Oswq
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
On Fri, Feb 14, 2014 at 04:39:46AM +0000, B J wrote:
> I searched the mailing list archives for an answer to my problem but
> didn't find anything.
>=20
> I recently installed FreeBSD 10 on a T42 Thinkpad. The configuration
> uses Gnome as the desktop.
>=20
> I've had problems configuring the machine to mount external USB
> drives. I can mount USB thumb drives when logged in as root using:
>=20
> mount -t msdosfs -o -m=3D644,-M=3D755 /dev/da0s1 /mnt/root
>=20
> after creating the directory /mnt/root.
To be able to mount as a user several settings have to be made.
First, in /etc/sysctl.conf:
vfs.usermount=3D1
Next the permissions for the devices have to be set. Since USB devices can =
be
plugged in at random, this has to be set in /etc/devfs.rules, not
etc/devfs.conf! You can make a choice here;
1) give _everybody_ read/write access by using mode 666
2) restrict r/w access to a group, e.g. a group 'usb'. This is the path=
=20
I've chosen.
So, in /etc/devfs.rules I've put the following;
[my_usb=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
Additionally, in /etc/rc.conf we have to activate this ruleset:
devfs_system_ruleset=3D"my_usb"
What I like to do is have USB drives mount automatically. To this end I'm
using sysutils/automount. This uses devd notifications. Configuration is do=
ne
with two files;
/usr/local/etc/devd/automount_devd.conf:
notify 20 {
match "system" "DEVFS";
match "type" "CREATE";
match "cdev" "da[0-9]s1$";
action "/usr/local/sbin/automount $cdev attach";
};
notify 20 {
match "system" "DEVFS";
match "type" "DESTROY";
match "cdev" "da[0-9]s1$";
action "/usr/local/sbin/automount $cdev detach";
};
N.B.: /usr/local/etc/devd must be named as a directory option in devd.conf(=
5).
But this is the default.
Next we have /usr/local/etc/automount.conf:
MNTPREFIX=3D"/media"
USERUMOUNT=3D"YES"
USER=3D"your_name_here"
ATIME=3D"NO"
REMOVEDIRS=3D"YES"
The directory =E2=80=98/media=E2=80=99 has to be created. Under this direct=
ory, subdirectories
named after the device will be created owned by $USER. So if a /dev/da0s1 is
detected by devd, it will be mounted at =E2=80=98/media/da0s1=E2=80=99 owne=
d by $USER. If the
USB cable is unplugged the filesystem will be unmounted. Note that it is
better to unmount filesystems by hand before unplugging them!
Roland
--=20
R.F.Smith http://rsmith.home.xs4all.nl/
[plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated]
pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725)
--45Z9DzgjV8m4Oswq
Content-Type: application/pgp-signature
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (FreeBSD)
iEYEARECAAYFAlL+T1oACgkQEnfvsMMhpyXq6gCeNMUM+PihotG4oUzPHNbO/gTd
8boAn3Ek9GrMH1Q+VWJp7Ryw3EFcboQf
=uZpi
-----END PGP SIGNATURE-----
--45Z9DzgjV8m4Oswq--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20140214171610.GA58795>