DVB Start SuSE10.0

#! /bin/sh
# Copyright (c) 1995-2004 SUSE Linux AG, Nuernberg, Germany.
# All rights reserved.
#
# Author: Kurt Garloff
# Please send feedback to http://www.suse.de/feedback/
#
# /etc/init.d/dvb
#   and its symbolic link
# /(usr/)sbin/rcdvb
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Template system startup script for some example service/daemon dvb
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
#
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux (UL) based Linux distributions. If you want to base your
# script on this template and ensure that it works on non UL based LSB
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
#
### BEGIN INIT INFO
# Provides:          dvb
# Required-Start:    $syslog
# Should-Start:
# Required-Stop:     $syslog
# Should-Stop: $time
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: dvb driver
# Description:       Start dvb
#       continued on second line by '#<TAB>'
#       should contain enough info for the runlevel editor
#       to give admin some idea what this service does and
#       what it's needed for ...
#       (The Short-Description should already be a good hint.)
### END INIT INFO
#
# Any extensions to the keywords given above should be preceeded by
# X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB.
#
# Notes on Required-Start/Should-Start:
# * There are two different issues that are solved by Required-Start
#    and Should-Start
# (a) Hard dependencies: This is used by the runlevel editor to determine
#     which services absolutely need to be started to make the start of
#     this service make sense. Example: nfsserver should have
#     Required-Start: $portmap
#     Also, required services are started before the dependent ones.
#     The runlevel editor will warn about such missing hard dependencies
#     and suggest enabling. During system startup, you may expect an error,
#     if the dependency is not fulfilled.
# (b) Specifying the init script ordering, not real (hard) dependencies.
#     This is needed by insserv to determine which service should be
#     started first (and at a later stage what services can be started
#     in parallel). The tag Should-Start: is used for this.
#     It tells, that if a service is available, it should be started
#     before. If not, never mind.
# * When specifying hard dependencies or ordering requirements, you can
#   use names of services (contents of their Provides: section)
#   or pseudo names starting with a $. The following ones are available
#   according to LSB (1.1):
#       $local_fs               all local file systems are mounted
#                               (most services should need this!)
#       $remote_fs              all remote file systems are mounted
#                               (note that /usr may be remote, so
#                                many services should Require this!)
#       $syslog                 system logging facility up
#       $network                low level networking (eth card, ...)
#       $named                  hostname resolution available
#       $netdaemons             all network daemons are running
#   The $netdaemons pseudo service has been removed in LSB 1.2.
#   For now, we still offer it for backward compatibility.
#   These are new (LSB 1.2):
#       $time                   the system time has been set correctly
#       $portmap                SunRPC portmapping service available
#   UnitedLinux extensions:
#       $ALL                    indicates that a script should be inserted
#                               at the end
# * The services specified in the stop tags
#   (Required-Stop/Should-Stop)
#   specify which services need to be still running when this service
#   is shut down. Often the entries there are just copies or a subset
#   from the respective start tag.
# * Should-Start/Stop are now part of LSB as of 2.0,
#   formerly SUSE/Unitedlinux used X-UnitedLinux-Should-Start/-Stop.
#   insserv does support both variants.
# * X-UnitedLinux-Default-Enabled: yes/no is used at installation time
#   (%fillup_and_insserv macro in %post of many RPMs) to specify whether
#   a startup script should default to be enabled after installation.
#   It's not used by insserv.
#
# Note on runlevels:
# 0 - halt/poweroff                     6 - reboot
# 1 - single user                       2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
#
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.




# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
#dvb_BIN=/usr/sbin/dvb
#test -x $dvb_BIN || { echo "$dvb_BIN not installed";
#       if [ "$1" = "stop" ]; then exit 0;
#       else exit 5; fi; }


# Check for existence of needed config file and read it
#dvb_CONFIG=/etc/sysconfig/dvb
#test -r $dvb_CONFIG || { echo "$dvb_CONFIG not existing";
#       if [ "$1" = "stop" ]; then exit 0;
#       else exit 6; fi; }


# Read config
#. $dvb_CONFIG


# Source LSB init functions
# providing start_daemon, killproc, pidofproc,
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions


# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status


# Reset status of this service
rc_reset


# Return values acc. to LSB for all commands but status:
# 0       - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.
# Pfade zu den benötigten Dateien
MODDEP=/lib/modules/`uname -r`/modules.dep
PCIMAP=/lib/modules/`uname -r`/modules.pcimap
# Module, die in jedem Fall zu laden sind, z.B. "evdev,mt312"
FIXEDMODULES="dvb-ttpci,budget"


#
# Tabulator- und Newline-Zeichen als Variable, ist so leichter lesbar
Tab=$'\t'
Newline=$'\n'




case "$1" in
    start)
        echo -n "Starting dvb "
        ## Start daemon with startproc(8). If this fails
        ## the return value is set appropriately by startproc.
  #
  # Wir benötigen Zugriff auf /proc/bus/pci, daher prüfen, ob es das
  # Verzeichnis überhaupt gibt
  if [ ! /sys/bus/pci -a ! -d /proc/bus/pci ]; then
    echo "/sys/bus/pci und /proc/bus/pci existieren nicht."
    exit 1
  fi


  # Geräteliste erstellen
  IFS=",${Tab}${Newline}"
  #
  # /sys/bus/pci/devices/* respektive /proc/bus/pci/??/* nach Geräten scannen
  if [ -e /sys/bus/pci/devices ]; then
    PCIDevices=/sys/bus/pci/devices/*
    Method="sysfs"
  elif [ -e /proc/bus/pci ]; then
    PCIDevices=/proc/bus/pci/??/*
    Method="proc"
  fi


  # Geräte nacheinander bestimmen
  for device in $PCIDevices; do
    if [ "$Method" = "sysfs" ]; then
      read Vendor < ${device}/vendor
      Vendor=${Vendor:2:4}
      read Device < ${device}/device
      Device=${Device:2:4}
      read SubVendor < ${device}/subsystem_vendor
      SubVendor=${SubVendor:2:4}
      read SubDevice < ${device}/subsystem_device
      SubDevice=${SubDevice:2:4}
      read Class < ${device}/class
      Class=${Class:2:6}
    elif [ "$Method" = "proc" ]; then
      # Vendor- und Device-ID auslesen und nach Hex wandeln
      Vendor=`hexdump -s 0 -n 2 -e '1/2 "%04x"' $device`
      Device=`hexdump -s 2 -n 2 -e '1/2 "%04x"' $device`
      SubVendor=`hexdump -s 44 -n 2 -e '1/2 "%04x"' $device`
      SubDevice=`hexdump -s 46 -n 2 -e '1/2 "%04x"' $device`


      # Class-ID: Teilt die Hardware in verschiedene Gruppen, 0x0200 sind
      # zum Beispiel Netzwerkkarten. Nachzulesen bei
      #   http://www.pcidatabase.com/pci_c_header.php
      # in der Struktur "PciClassCodeTable"
      Class=`hexdump -s 10 -n 2 -e '1/2 "%04x"' $device``hexdump -s 9 -n 1 -e '1/2 "%02x"' $device`
    fi


    # Nur DVB-Karten (Class-ID 0x0400 und 0x0480) berücksichtigen
    if [ "${Class:0:4}" = "0400" -o "${Class:0:4}" = "0480" ]; then
      # Gerät an die Liste der zu überprüfenden Geräte anhängen
      PciDev="${PciDev}${Tab}${Vendor},${Device},${SubVendor},${SubDevice},${Class}"
    fi
  done


  #
  # PCI-Modulliste (/lib/modules/[Kernel-Version]/modules.pcimap) prüfen
  if [ ! -r "$PCIMAP" -o ! -r "$MODDEP" ]; then
    echo "PCI-Modul-Liste oder Modul-Abhängigkeiten nicht gefunden."
    exit 1
  fi


  #
  # PCI-Modul-Liste zeilenweise einlesen
  Modules2Load="${FIXEDMODULES//,/${Tab}}"
  IFS="${Newline}"
  for z in `cat $PCIMAP`; do
    # Die Spalten sind mit (mehreren) Leerzeichen getrennt
    IFS=" "
    set -- $z


    # Vendor- und Product-ID incl. Sub-IDs zwischenspeichern
    module="$1"
    vendor="${2:6:4}"
    product="${3:6:4}"
    subvendor="${4:6:4}"
    subdevice="${5:6:4}"
    class="${6:4:6}"
    classmask="${7:4:6}"


    IFS="${Tab}${Newline}"
    for d in ${PciDev}; do
      IFS=",${Tab}${Newline}"
      set -- $d


      if [ "${vendor}" = "${1}" -a "${product}" = "${2}" -o \
           "${vendor}" = "ffff" -a "${product}" = "ffff" ]; then
        if [ "${subvendor}" = "${3}" -a "${subdevice}" = "${4}" -o \
             "${subvendor}" = "ffff" -a "${subdevice}" = "ffff" ]; then
          if [ "${class}" = "0000" -o \
               "$[ 0x${5} & 0x${classmask} ]" = "$[0x${class}]" ]; then
             for m in ${Modules2Load}; do
               if [ "${m}" = "${module}" ]; then
                 module=""
               fi
             done
             if [ -n "${module}" ]; then
               Modules2Load="${Modules2Load}${Tab}${module}"
             fi
          fi
        fi
      fi
    done
  done


  IFS=" ${Tab}${Newline}"
  DvbModules=""
  for m in ${Modules2Load}; do
    # Eine Liste sämtlicher DVB-Module und abhängiger Module erstellen,
    # da ein "modprobe -r" aufgrund von belegten Ressourcen nicht immer
    # auf Anhieb funktioniert
    dep=""
    for d in `grep "${m}\.ko:" ${MODDEP}`; do
      d=${d##*/}
      dep="${dep}${Tab}${d%.ko*}"
    done
    DvbModules="${dep}${Tab}${DvbModules}"
    echo "Modul laden: $m"
    modprobe ${m}
  done


  #
  # Liste der DVB-Module speichern
  if [ -e /var/run/dvbdriver.modules ]; then
    rm -f /var/run/dvbdriver.modules
  fi
  for m in ${DvbModules}; do
    echo ${m} >> /var/run/dvbdriver.modules
  done


        # Remember status and be verbose
        rc_status -v
        ;;
    stop)
        echo -n "Shutting down dvb "
        ## Stop daemon with killproc(8) and if this fails
        ## killproc sets the return value according to LSB.


        if [ ! -r /var/run/dvbdriver.modules ]; then
                echo "Keine Modulliste gefunden (/var/run/dvbdriver.modules)"
                exit 1
        fi
        for m in `cat /var/run/dvbdriver.modules`; do
                modprobe -r ${m} >/dev/null 2>&1
        done
        # rm -f /var/run/dvbdriver.modules


        test  `lsmod | grep dvb_core | wc -l` == 0
        # Remember status and be verbose
        rc_status -v
        ;;
    restart)
        ## Stop the service and regardless of whether it was
        ## running or not, start it again.
        $0 stop
        $0 start


        # Remember status and be quiet
        rc_status
        ;;
    status)
        echo -n "Checking for service dvb "
        ## Check status with checkproc(8), if process is running
        ## checkproc will return with exit status 0.


        # Return value is slightly different for the status command:
        # 0 - service up and running
        # 1 - service dead, but /var/run/  pid  file exists
        # 2 - service dead, but /var/lock/ lock file exists
        # 3 - service not running (unused)
        # 4 - service status unknown :-(
        # 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)


        # NOTE: checkproc returns LSB compliant status values.
        lsmod | grep dvb_core > /dev/null 2>&1
        # NOTE: rc_status knows that we called this init script with
        # "status" option and adapts its messages accordingly.
        rc_status -v
        ;;
    *)
        echo "Usage: $0 {start|stop|status|restart}"
        exit 1
        ;;
esac
rc_exit