Question: automatic preloading scsi/sg modules as non-root

From: Reinout Wijnveen (reinout@mktaal.nl)
Date: Wed Jan 03 2001 - 14:41:13 PST

  • Next message: Henning Meier-Geinitz: "Re: SANE backend for Mustek 1200UB released by Mustek"

    Hi,

    I have a problem scanning as non-root as long as the modules are not loaded.

    I'm using a HP6200 scanner with a Tekram 315 SCSI card (i have on board a
    7880 SCSI controller for disks and CD ROM) and kernel 2.4.0-prerelease with
    RedHat 7.0 and the sane software that was delivered with RedHat 7.0. I patched
    the kernel to get the Tekram card supported. This set-up works quite well,
    although not perfect.

    I added this to my modules.conf to get the Tekram module loaded as soon as i
    access the scanner:
    #######################################
    # Preload Tekram module before sg module
    alias char-major-21 sg
    pre-install sg modprobe -k dc395x_trm
    #######################################
    If I issue scanimage -L as root the modules are loaded and i get the correct
    answer:

    device `hp:/dev/scanner' is a Hewlett-Packard C6270A flatbed scanner

    If I do this as a normal user it doesn't work and the debug says this:

    [reinout@takke /tmp]$ scanimage -L
    [sanei_debug] Setting debug level of hp to 128.
    [hp] init called
    [hp] get_devices called
    [hp] hp_read_config: hp backend v0.88 starts reading config file
    [hp] hp_read_config: processing line <scsi HP>
    [hp] hp_read_config: processing line </dev/scanner>
    [hp] hp_read_config: attach scsi HP
    [hp] hp_read_config: attach /dev/scanner
    [hp] hp_get_dev: New device /dev/scanner, connect-scsi, scsi-request=1
    [hp] scsi_new: open failed (Invalid argument)
    [hp] /dev/scanner: Can't open scsi device
    [hp] exit called

    If I preload the Tekram module all works fine, but i'd prefer to load it
    automatically.

    Any hints or specific documentation to get this working? 

    -- 

    Regards,

    Reinout Wijnveen
reinout@mktaal.nl

    "All who believe in psychokinesis raise my hand"

    --
Source code, list archive, and docs: http://www.mostang.com/sane/
To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com

    This archive was generated by hypermail 2b29 : Wed Jan 03 2001 - 08:48:40 PST