automatic set permission to device at boot
 

hi all.
i use xsane to make my scanner work. i can use it through libusb. i have managed to use the scsanner but i have to change permission to /proc/bus/usb/002/002 to use it when i log as normal user.
is there a way to automatically set permission to a device (/proc/bus/usb/002/002) at boot?

thank you

Matteo

Gentoo may have a similar mechanism ( I don't know ), but in Redhat you would edit the file /etc/security/console.perms
This changes the file permissions on selected devices for whoever logs into the console.

Dear Matteo,

which kernel do you use? Do you have scanner drivers in kernel? There is a quick way to change the USB permissions on 2.6 kernel. In your /etc/fstab you should have a line like

usbfs /proc/bus/usb usbfs defaults,devmode=0666 0 0

the option devmode gives everyone the read-write access to all usb devices. But beware, there was a bug in kernels < 2.6.8 so it did not work. There is a better but a bit more complicated way of doing it, using hotplug.

Things may be different, though, if you have corresponding kernel drivers installed.

Best,

Ott

thank you! in fact my kernel is a 2.6.8-r8 and it works fine with your help! bye!

Matteo