Hi, With hotplug-ng dropping support for the way we're using it as of now, there's a need to revamp the hotplug stuff we use.
First of all, recent versions of hotplug also support hooks, so the proposed solution would be backward-compatible to a certain degree. The idea basically is to build a simple database (simpler than the usermap file) of the supported scanners, and, while doing so, adding some features to the hotplug stuff. Database layout: ---------------- The database would be installed under $sysconfdir/sane.d/hotplug. The idea is to have one file per USB vendor ID; this file would contain one line (plus comments) per known scanner product ID. Now, we have the possibility to add some nice features, by adding fields to this file, like: # PID Ownership Perms [Optional: user-defined script] 0xPPPP root:scanner 0660 [/usr/local/bin/scanner-foo.sh] This would solve complaint #1: as of now, it's not possible to have different scanners owned by different users (where different means different PID and/or VID, because we can't do much more...) Hotplug script: --------------- The hook gets the device number (DEVNUM) and bus number (BUSNUM) from the environment. It's now easy to get the DEVVID and DEVPID for the device, then look for $sysconfdir/sane.d/hotplug/$DEVVID, and, if it exists, to grep for ^$DEVPID, then apply the corresponding ownership and permissions, and run the user-specified script if it exists. User script: ----------- The user script would be called with DEVNUM, BUSNUM, DEVVID and DEVPID in the environment. I'm going to play with this next week, and this will probably make it into the next revision of the Debian package, and to the CVS :) This is, I believe, more secure and more flexible than the hotplug hook posted earlier. JB. -- Julien BLACHE <http://www.jblache.org> <j...@jblache.org> GPG KeyID 0xF5D65169
