Brad: Given my user and security situation, number 2 seems reasonable, except that the man page for mount on my system does not show a devmode option. I did find the place where the usb system gets mounted in rc.sysinit, as follows:
action $"Mounting USB filesystem: " mount -t usbdevfs usbdevfs /proc/bus/usb And it shows up in mtab as follows: usbdevfs /proc/bus/usb usbdevfs rw 0 0 So, the question is, can I just edit the mount command in rc.sysinit directly and add the appropriate mount options? Thanks for the info. Neil On Sat, 2002-02-16 at 20:54, Brad Hards wrote: > > 3. I'm not quite sure what you you mean by the "device node". > The device node is the interface between user space and kernel space. For > example, the mouse is: > crw------- 1 root root 13, 63 Aug 31 06:30 /dev/input/mice > and the permissions on the /proc/bus/usb/001/002 node are: > -rw-r--r-- 1 root root 18 Feb 15 13:18 /proc/bus/usb/001/002 > > This is a sensible default. > > However it does mean that you need to be root to write anything to the device > (which is a lot of USB transactions, because of the way USB works). > > Some suggestions: > 1. Change the rights on the particular node (whichever /proc/bus/usb/X/Y entry > corresponds) to +w. See the manual entry for chmod. You can probably do this > automagically with an entry in /sbin/hotplug. THIS IS INSECURE UNLESS YOU ARE > THE ONLY PERSON WITH ACCESS TO THE SYSTEM. > 2. Change the mount options for usbdevfs, using the devmode option: > mount /proc/bus/usb -o remount,devmode=0666 > (see the manual entry for mount for more information). THIS IS EVEN MORE > INSECURE THAN THE FIRST OPTION. > 3. Run the nomad utility suid root. THIS IS VERY DANGEROUS IF THERE IS A BUG > IN THE NOMAD UTILITY. (man chmod, s option) > 4. Modify pam configuration (read the manual entry and probably the system > admin's guide) to configure the particular device node to belong to you when > you log in, if the device is connected. IF YOU MISCONFIGURE PAM, YOU MAY NOT > BE ABLE TO LOG IN. > > I'd probably do 2, because I control my laptop, and it is easy. Your situation > may vary, and you need to assess the risks. > > Brad > _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
