From: mru@users.sourceforge.net (Måns Rullgård)
To: Olaf Dietsche <olaf.dietsche@t-online.de>
Cc: mru@users.sourceforge.net (Måns Rullgård),
miquels@cistron-office.nl (Miquel van Smoorenburg),
linux-kernel@vger.kernel.org
Subject: Re: About /etc/mtab and /proc/mounts
Date: 26 Feb 2003 14:54:23 +0100 [thread overview]
Message-ID: <yw1xlm03uoz4.fsf@manganonaujakasit.e.kth.se> (raw)
In-Reply-To: Olaf Dietsche's message of "Wed, 26 Feb 2003 14:39:31 +0100"
Olaf Dietsche <olaf.dietsche@t-online.de> writes:
> >> The 'user' option is in /etc/fstab, so this is not a problem. I can
> >> mount _and_ umount /cdrom as a simple user.
> >
> > It's strange if you can. My mount (fairly recent) looks in fstab to
> > determine whether a user should be allowed to mount a device.
> > However, when unmounting it checks /etc/mtab to make sure it was you
> > who mounted it in the first place, making it impossible to unmount
> > someone else's cdrom. If you use the 'users' (note the 's') option
> > instead any user can mount or unmount the device at any time, mtab
> > being ignored.
>
> I just verified it. I and anybody else can mount and umount /cdrom. If
> I mounted /cdrom, someone else can umount it.
>
> $ mount -V
> mount: mount-2.11n
>
> $ grep user /etc/fstab
> /dev/hdb/0 /cdrom iso9660 defaults,ro,unhide,user,noauto,noexec,nosuid 0 2
>
> $ ls -l /etc/mtab
> lrwxrwxrwx 1 root root 12 2002-09-22 02:58 /etc/mtab -> /proc/mounts
>
> When /etc/mtab is a regular file, it works as you described.
What does your /proc/mounts look like when the cdrom is mounted? Are
you using a standard mount, or something hacked up by RH or others?
--
Måns Rullgård
mru@users.sf.net
next prev parent reply other threads:[~2003-02-26 13:44 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-19 11:21 About /etc/mtab and /proc/mounts DervishD
2003-02-26 9:18 ` Kasper Dupont
2003-02-26 10:26 ` Miquel van Smoorenburg
2003-02-26 11:00 ` Olaf Dietsche
2003-02-26 11:14 ` Måns Rullgård
2003-02-26 11:44 ` Kasper Dupont
2003-02-26 12:16 ` Olaf Dietsche
2003-02-26 12:34 ` Måns Rullgård
2003-02-26 13:39 ` Olaf Dietsche
2003-02-26 13:54 ` Måns Rullgård [this message]
2003-02-26 14:23 ` Olaf Dietsche
2003-02-27 4:14 ` Miles Bader
2003-02-27 6:40 ` Kasper Dupont
2003-02-27 7:03 ` Joseph Wenninger
2003-02-27 8:28 ` Kasper Dupont
2003-03-05 0:03 ` Jamie Lokier
2003-02-27 7:06 ` Miles Bader
2003-02-27 8:25 ` Kasper Dupont
2003-02-27 8:42 ` Miles Bader
2003-02-27 9:21 ` jw schultz
2003-02-27 9:49 ` Miles Bader
2003-02-27 23:33 ` Kasper Dupont
2003-02-27 12:48 ` Denis Vlasenko
2003-02-27 23:28 ` Kasper Dupont
2003-02-28 6:15 ` Denis Vlasenko
2003-03-02 13:04 ` DervishD
2003-03-02 14:16 ` Kasper Dupont
2003-03-03 1:04 ` jw schultz
2003-03-03 12:22 ` Kasper Dupont
2003-03-04 2:02 ` jw schultz
2003-03-05 12:57 ` Kasper Dupont
2003-03-06 1:18 ` jw schultz
2003-03-06 23:30 ` Kasper Dupont
2003-03-04 11:16 ` DervishD
2003-03-04 11:08 ` DervishD
2003-02-27 9:46 ` Kasper Dupont
2003-02-27 9:58 ` Miles Bader
2003-02-27 12:26 ` Gabriel Paubert
2003-02-27 7:07 ` Joseph Wenninger
2003-02-27 7:08 ` Dominik Kubla
2003-02-27 8:12 ` Kasper Dupont
2003-02-27 9:11 ` Dominik Kubla
2003-02-27 16:00 ` Horst von Brand
2003-02-27 16:31 ` Christoph Hellwig
2003-02-27 16:40 ` Dominik Kubla
2003-02-27 19:47 ` Kasper Dupont
2003-02-27 22:13 ` Valdis.Kletnieks
2003-02-27 22:31 ` Kasper Dupont
2003-02-27 23:54 ` Miquel van Smoorenburg
2003-02-28 1:37 ` Miles Bader
2003-03-02 12:53 ` DervishD
2003-03-02 14:00 ` Kasper Dupont
2003-03-04 11:02 ` DervishD
2003-03-04 12:09 ` Kasper Dupont
2003-03-04 14:53 ` DervishD
2003-03-02 12:51 ` DervishD
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