Messages in this thread | | | Date | Wed, 3 Mar 2004 17:19:20 -0800 | From | Greg KH <> | Subject | Re: [ANNOUNCE] udev 021 release |
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On Thu, Mar 04, 2004 at 12:56:29AM +0100, Michael Weiser wrote: > On Wed, Mar 03, 2004 at 07:15:00AM -0800, Greg KH wrote: > > > > Major changes from the 019 version: > > > > - new variable $local for the udev.permission file allows > > > > permissions to be set for the currently logged in user. > > > Yay, just the other day I thought that might be a nice feature in > > > concert with RedHat's/Fedora's pam_console module. Am I right in > > > assuming that the current utmp based code will give the file to the user > > > that most recently logged into the local console? This could cause some > > > confusion with the pam_console-method which gives files to the user that > > > logged in *first* on a local console. > > I don't know, care to test it out? > Aye. It's even worse. The user logged into the lowest-numbered console > will get owner of the newly created file when using $local. > > So if I log into tty2 and plug in my USB stick I will be owner of > /dev/sda1. If another guy comes along, logs into tty1, unplugs my USB > stick and replugs it, he'll be owner of /dev/sda1. But if I log out now, > re-login on tty2 and replug the stick again, I won't get the owner of > /dev/sda1 but the other guy again. This will certainly break things - at > least on Fedora Core 1. Maybe it's different with other > distributions/glibc/utmp variants/versions.
Ick, well you are describing a pretty pathalogical situation. I suspect for 99.9% of the users who would use this option, it will work just fine, as they only have 1 user on the system at a time.
So, if you have multiple users on the physical system, then don't use $local :)
Feel free to send a update to the documentation that illustrates this limitation of the feature.
thanks,
greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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