WebSVN – livecd – Diff – /trunk/linux-live.sl/initrd/liblinuxlive


#!/bin/ash
#
# Functions library :: for Linux Live scripts 5.x.y
# Author: Tomas M. <http://www.linux-live.org>
#
# modified by Urs Beyerle, PSI
# - to allow LiveCD mounted over nfs
# - add scsi_mod, sd_mod for usb-storage module
# - only with boot option "automount", all devices in fstab are rw automounted
# - remove detect of CD and Floppy (done by fstab-sync)
# - add sr_mod (USB CDROM support)
# - add SATA to modprobe_usb_modules -> modprobe_usb_sata_modules
# - add fscache (for SL5) 
# - add ide-cd, sr_mod, cdrom (for SL5 cdrom support)
# - add aufs (unionfs replacement)
# - to allow LiveCD mounted over NFS (for diskless client)
# - add functions get_dhcp_lease() and load_network_modules()
# - add ata_piix to modprobe_usb_sata_modules
# - works with unionfs 2.x
# - better detection of network card in case of diskless client
#
 
# ===========================================================
# user interface functions
# ===========================================================
 
# echolog
# $1 = text to show and to write to /var/log/messages
#
echolog()
{
   echo "LIVECD:" "$@" >>/var/log/livedbg
   echo "$@"
}
 
# debug
# commands executed when debug boot parameter is present
#
debug()
{
   echo
   echo "====="
   echo ": Debugging started. Here is the root shell for you."
   echo ": Type your desired command or hit Ctrl+D to continue booting."
   echo
   ash
}
 
# header
# $1 = text to show
#
header()
{
   echolog "[0;1m$1[0;0m"
}
 
fatal()
{
   header "Fatal error occured - $1"
   echolog "Something went wrong and we can't continue booting :("
   echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."
   echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."
   echolog "To be safe, hit Ctrl+Alt+Delete to reboot."
   echolog
   ash
}
 
# ===========================================================
# text processing functions
# ===========================================================
 
# egrep_o is a replacement for "egrep -o". It prints only the last
# matching text
# $1 = regular expression
#
egrep_o()
{
   cat | egrep "$1" | sed -r "s/.*($1).*/\\1/"
}
 
# look into cmdline and echo $1 back if $1 is set
# $1 = value name, case sensitive, for example livecd_subdir
# $2 = file to use instead /proc/cmdline, optional
#
cmdline_parameter()
{
   CMDLINE=/proc/cmdline
   if [ "$2" != "" ]; then CMDLINE="$2"; fi
   cat "$CMDLINE" | egrep_o "(^|[[:space:]]+)$1(\$|=|[[:space:]]+)" | egrep_o "$1"
}
 
# look into cmdline and echo value of $1 option
# $1 = value name, case sensitive, for example livecd_subdir
# $2 = file to use instead /proc/cmdline, optional
#
cmdline_value()
{
   CMDLINE=/proc/cmdline
   if [ "$2" != "" ]; then CMDLINE="$2"; fi
   cat "$CMDLINE" | egrep_o "(^|[[:space:]]+)$1=([^[:space:]]+)" | egrep_o "=.*" | cut -b 2- | tail -n 1
}
 
# ===========================================================
# system functions
# ===========================================================
 
# modprobe module $1, including all dependencies, suppress all messages
# (own function because modprobe in busybox doesn't work with gzipped modules)
# $1 = module name, eg. ehci-hcd
# $2 = optional argument
#
modprobe_module()
{
  if [ "$1" = "" ]; then return 1; fi
  PRINTK=`cat /proc/sys/kernel/printk`
  echo "0" >/proc/sys/kernel/printk
 
  KERNEL="`uname -r`"; LSMOD=/tmp/lsmod
  MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep | egrep \"$1\\.ko(\\.gz)?:\"`"
 
  for MODULE in `echo $MODULEDEPS | cut -d ":" -f 2-` `echo $MODULEDEPS | cut -d ":" -f 1`; do
     MODULE=${MODULE%%:};   # remove : at the end, a bug 
     TMPMOD="/tmp/`basename $MODULE .gz`";
     # if the module is not loaded already
     if [ "`cat $LSMOD 2>/dev/null | egrep \"^$TMPMOD\\\$\"`" = "" ]; then
        gunzip -c $MODULE 2>/dev/null >$TMPMOD
        if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy
        insmod $TMPMOD $2; err=$?
        ### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?
        if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log
        rm $TMPMOD
     fi
  done
 
  echo "$PRINTK" >/proc/sys/kernel/printk
  if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi
  return $err
}
 
# Mount device $1 to $2
# $1 = /dev device to mount, eg. /dev/hda1
# $2 = mountpoint, eg. /mnt/hda1
# $3 = mount options, for example "loop", "ro", or "remount,rw"
#
mount_device()
{
  mkdir -p $2
  if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi
 
  PRINTK=`cat /proc/sys/kernel/printk`
  echo "0" >/proc/sys/kernel/printk
 
  mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null
  err=$?
 
  if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi
  echo "$PRINTK" >/proc/sys/kernel/printk
  return $err
}
 
# ===========================================================
# live module functions
# ===========================================================
 
# Create module
# call mksquashfs with apropriate arguments
# $1 = directory which will be compressed to squashfs module
# $2 = output .mo file
# $3 = optional -keep-as-directory argument
#
create_module()
{
   mksquashfs $1 $2 $3 >/dev/null
   if [ $? -ne 0 ]; then return 1; fi
   chmod oga-x $2 # remove execute attrib
}
 
# Mount .mo module to destination directory
# $1 = path to .mo livecd compressed module
# $2 = destination folder
#
mount_module()
{
   mount -t squashfs -o loop,ro $1 $2
}
 
# Insert a directory tree $2 to an union specified by $1
# Top-level read-write branch is specified by it's index 0
# $1 = union absolute path (starting with /)
# $2 = path to data directory
#
union_insert_dir()
{
   which unionctl >/dev/null 2>&1
   if [ $? -eq 0 ]; then
       # unionfs 1.x or aufs
       unionctl "$1" --add --after 0 --mode ro "$2"
   else
       # unionfs 2.x
       mount -t unionfs -o remount,add=:${2}=ro none "$1"
   fi
}
 
# List all modules in all directories (base, modules, optional)
# and filter out unneeded optional modules (not specified by load= kernel parameter)
# $1 = root directory of mounted DATAdir
#
list_modules()
{
   LOAD="`cmdline_value load`"
   ls -A1d $1/*.mo $1/*/*.mo 2>/dev/null | while read LINE; do
      MODNAME="`basename $LINE .mo`"
      if [ "$LOAD" != "*" -a "`echo $LINE | grep optional`" != "" -a "`echo $LOAD | egrep \"(^|,)$MODNAME(\\\$|,)\"`" = "" ]; then continue
        else echo $LINE; fi
   done
}
 
# Insert one single .mo module to the union
# $1 = union absolute path (starting with /)
# $2 = module.mo full path
# $3 = destination folder, where images will be mounted to
#
union_insert_module()
{
   TARGET="$3/`basename $2`"
   while [ -e $TARGET ]; do TARGET=$TARGET.X; done
   mkdir -p $TARGET
   mount_module $2 $TARGET
   if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi
   union_insert_dir $1 $TARGET; 
}
 
# Insert all .mo modules, in $2 directory and subdirectories, to the union
# $1 = union absolute path (starting with /)
# $2 = LiveCD data dir (with directories /base, /modules, etc.)
# $3 = destination folder, where images will be mounted to
#
union_insert_modules()
{
   PRINTK=`cat /proc/sys/kernel/printk`
   echo "0" >/proc/sys/kernel/printk
 
   list_modules $2 | while read MODULE; do
      echo " -> `basename $MODULE`"
      union_insert_module $1 $MODULE $3
   done
 
   echo "$PRINTK" >/proc/sys/kernel/printk
}
 
# Copy modules to RAM directory
# $1 = data directory
# $2 = target directory in RAM
#
copy_to_ram()
{
   cp -R $1/* $2
   if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi
}
 
# Copy content of "rootcopy" directory on the CD to $2 (union, usually)
# $1 = source
# $2 = destination
#
copy_rootchanges()
{
   cp -a $1/rootcopy/* $2 2>/dev/null # could be empty
}
 
# ===========================================================
# discovery functions
# ===========================================================
 
# List all CD-ROMs
# by using /proc entries
#
list_cdrom_devices()
{
   if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi
   for CDDEVICE in `cat /proc/sys/dev/cdrom/info | head -n 3 | tail -n 1 | cut -d ":" -f 2`; do
      echo "/dev/$CDDEVICE"
   done
}
 
# List all partition devices
# take list of all partitions and output unique disks.
# Return empty result when nohd parameter was given.
#
list_partition_devices()
{
   if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi
   cat /proc/partitions | grep -v loop | sed -r "s/^[0-9[:space:]]+/\/dev\//" | grep /dev/
}
 
# List all disk devices
#
list_disk_devices()
{
   list_partition_devices | egrep -v "[0-9]"
}
 
# List all block devices
#
list_block_devices()
{
   list_cdrom_devices
   list_partition_devices
}
 
# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.
# If LiveCD found in the device, echo dirname of it's directory,
# and leave the device mounted. Mounting is not ro, but without any argument.
# $1 = directory where devices will be mounted
# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD
#
find_live_data_dir()
{
   if [ "$NFSROOT" != "" ]; then 
      DIR="/$1/nfs"
      mkdir -p $DIR
 
      # disable kernel warnings
      PRINTK=`cat /proc/sys/kernel/printk`
      echo "0" >/proc/sys/kernel/printk
      # try to mount nfs dir
      mount -t nfs -o nolock,ro,rsize=8192,wsize=8192,hard,intr $NFSROOT $DIR
      # enable kernel warnings
      echo "$PRINTK" >/proc/sys/kernel/printk
 
      FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null | head -n 1`
      if [ "$FOUND" != "" ]; then 
         dirname "$FOUND"
      fi
   else
      list_block_devices | while read DEVICE; do
         DIR="/$1/`basename $DEVICE`"
         mount_device $DEVICE $DIR
         if [ $? -ne 0 ]; then continue; fi
         FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null | head -n 1`
         if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null
         else dirname "$FOUND"; return 1; fi
      done
   fi
}
 
# ===========================================================
# hardware preparation functions
# ===========================================================
 
# Create block devices to /dev described by /sys entries
#
create_block_devices()
{
   echolog "creating /dev entries for block devices"
   ls -A1d /sys/block/*/dev /sys/block/*/*/dev 2>/dev/null | grep -v loop | while read BLOCK; do
      DEVICE="/dev/`basename \`dirname $BLOCK\``"
      if [ ! -b $DEVICE ]; then
         MINORMAJOR="`head -n 1 $BLOCK | tr ':' ' '`"
         mknod $DEVICE b $MINORMAJOR
      fi
   done
}
 
# modprobe kernel modules needed for the LiveCD
#
modprobe_essential_modules()
{
   echolog "starting loop device support"
   modprobe_module loop max_loop=32
   echolog "starting cdrom support"
   modprobe_module ide_cd
   modprobe_module ide-cd
   modprobe_module sr_mod
   modprobe_module cdrom
   echolog "starting cdrom filesystem support"
   modprobe_module isofs
   echolog "starting squashfs support"
   modprobe_module squashfs
   echolog "starting unionfs/aufs support"
   modprobe_module unionfs
   modprobe_module aufs
   echolog "starting vfat support"
   modprobe_module nls_cp437
   modprobe_module nls_iso8859-1
   modprobe_module nls_iso8859-2
   modprobe_module vfat
   echolog "starting ntfs support"
   modprobe_module ntfs
   create_block_devices
}
 
 
# modprobe kernel modules needed for USB masstorage devices
#
modprobe_usb_sata_modules()
{
   echolog "starting USB and SATA support"
   modprobe_module ehci-hcd
   modprobe_module ohci-hcd
   modprobe_module uhci-hcd
   modprobe_module scsi_mod
 
   modprobe_module libata
   modprobe_module ata_piix
   modprobe_module ahci
 
   modprobe_module sd_mod
   modprobe_module sr_mod
   modprobe_module usb-storage
   echolog "waiting for USB devices, max 9 seconds"
   sleep 9
   create_block_devices
}
 
# modprobe nfs kernel modules
#
modprobe_nfs_modules()
{
   echolog "starting nfs support"
   modprobe_module lockd
   modprobe_module fscache
   modprobe_module nfs_acl
   modprobe_module nfs
}
 
# enable/disable CD autoejecting when unmounted
# $1 = 1|0 ... enable|disable
#
cd_autoeject()
{
   echo $1 >/proc/sys/dev/cdrom/autoeject
}
 
# Disable DMA if nodma boot parameter is present
#
setup_dma()
{
   if [ ! "`cmdline_parameter nodma`" = "" ]; then
      for DEVICE in `list_cdrom_devices` `list_disk_devices`; do
         echolog "setting DMA support off for $DEVICE"
         hdparm -d 0 $DEVICE
      done
   fi
}
 
# create correct fstab file in $1/etc/fstab and create apropriate
# mount directories in $1
# $1 = root directory (union)
#
activate_fstab()
{
   mkdir -p $1/etc
   FSTAB="$1/etc/fstab"
   echo "tmpfs            /                tmpfs       defaults         0   0" >$FSTAB
   echo "devpts           /dev/pts         devpts      gid=5,mode=620   0   0" >>$FSTAB
   echo "proc             /proc            proc        defaults         0   0" >>$FSTAB
 
   # all the rest will be done by runlast or by fstab-sync
   # search for SWAP done later in /etc/rc.sysinit
}
 
 
# ===========================================================
# functions used for LiveCD on NFS 
# ===========================================================
 
# load network modules, if NFSROOT is set
# Urs Beyerle, PSI
#
 
# 1. load network driver defined by kernel parameter nic
#
load_network_module_nic()
{
    if [ -n "$NIC" ] && [ "$NIC" != "auto" ]; then
	echolog "load module $NIC"
	modprobe_module $NIC
        # FOUND_NIC="yes" # we are not yet sure ;-)
    fi
}
 
# 2. detecting network card from pcitable list
#
load_network_module_pcitable()
{
    PCITABLE=/bin/pcitable
    NICS=`lspci -n | awk '/Class 0200/ {print $4}' | tr ':' ' ' \
	| while read x y ; do grep "0x$x.*0x$y" $PCITABLE \
	| awk '$3 !~ /"unknown"/ {print $3}' | tr -d '"' ; done`
    
    if [ -n "$NICS" ]; then
	echolog "found network card(s): $NICS"
	for driver in $NICS; do
	    echolog "load module $driver"
	    modprobe_module $driver
	    FOUND_NIC="$driver"
	done
    fi
}
 
found_nic()
{
    for iface in eth0 eth1 eth2 eth3; do
	ifconfig $iface > /dev/null 2>&1
	if [ $? -eq 0 ]; then  FOUND_NIC="yes"; break; fi
    done
}
 
# 3. probe for more network card drivers, if no ethX devices found
#
load_network_module_auto()
{
    echolog "auto-detection of network driver ..."
    KERNEL="`uname -r`"
    NETDRIVERS="`find /lib/modules/$KERNEL/kernel/drivers/net | grep -v mii | grep .ko | cut -d"/" -f8 | cut -d"." -f1 | uniq`"
    for driver in $NETDRIVERS; do
	modprobe_module $driver > /dev/null 2>&1
	for iface in eth0 eth1 eth2 eth3; do
	    ifconfig $iface > /dev/null 2>&1
	    if [ $? -eq 0 ]; then 
		echolog "load $driver"
		# tr brocken in busybox
		# FOUND_NIC="`echo $driver | tr '-' '_'`"
		FOUND_NIC="`echo $driver | cut -d"-" -f1`"
		break 2
	    fi
	done
	rmmod $driver > /dev/null 2>&1
    done
 
    # clean up: remove unused modules until driver "mii"
    LOADED_DRIVERS="`lsmod | grep -v Module | grep -v $FOUND_NIC | cut -d" " -f1`"
    for driver in $LOADED_DRIVERS; do
	[ "$driver" = "mii" ]  && break
	[ "$driver" = "ntfs" ] && break
	[ "$driver" = "vfat" ] && break
	rmmod $driver > /dev/null 2>&1
    done
}
 
# 4. ask the user for a network driver
#
load_network_module_ask()
{
    echo "ERROR: No network card detected!"
    echo "Type in your network card driver (e.g. tg3, e1000). "
    echo "Or ask your system administrator for help."
    echo -n "Network card driver: "
    read driver
    echo "Load module $driver"
    modprobe_module $driver
}
 
# Try to find a network driver
#
load_network_modules()
{
    # mii maybe need by NIC
    echolog "load module mii"
    modprobe_module mii
 
    FOUND_NIC=""
    NIC="`cmdline_value nic`"
    load_network_module_nic
    [ "$NIC" != "auto" ] && load_network_module_pcitable
    found_nic
    [ -z $FOUND_NIC ] && load_network_module_auto
    [ -z $FOUND_NIC ] && load_network_module_ask
 
    # remove mii, if not needed
    rmmod mii > /dev/null 2>&1
}
 
# get DHCP lease
# Urs Beyerle, PSI
#
get_dhcp_lease()
{
    # create /dev/urandom (needed by udhcpc)
    mknod /dev/urandom c 1 9
    for iface in eth0 eth0 eth1 eth1; do
	echolog "Try to get DHCP lease on $iface"
	udhcpc --now --quit --interface=$iface --script=/bin/udhcpc.script
	[ $? -eq 0 ] && return
	echo "ERROR: couldn't get DHCP lease, trying again"
    done
    echo "ERROR: can't get DHCP lease on eth0 and eth1"
}
 

Rev 108	Rev 109
1	`#!/bin/ash`	1	`#!/bin/ash`
2	`#`	2	`#`
3	`# Functions library :: for Linux Live scripts 5.x.y`	3	`# Functions library :: for Linux Live scripts 5.x.y`
4	`# Author: Tomas M. <http://www.linux-live.org>`	4	`# Author: Tomas M. <http://www.linux-live.org>`
5	`#`	5	`#`
6	`# modified by Urs Beyerle, PSI`	6	`# modified by Urs Beyerle, PSI`
7	`# - to allow LiveCD mounted over nfs`	7	`# - to allow LiveCD mounted over nfs`
8	`# - add scsi_mod, sd_mod for usb-storage module`	8	`# - add scsi_mod, sd_mod for usb-storage module`
9	`# - only with boot option "automount", all devices in fstab are rw automounted`	9	`# - only with boot option "automount", all devices in fstab are rw automounted`
10	`# - remove detect of CD and Floppy (done by fstab-sync)`	10	`# - remove detect of CD and Floppy (done by fstab-sync)`
11	`# - add sr_mod (USB CDROM support)`	11	`# - add sr_mod (USB CDROM support)`
12	`# - add SATA to modprobe_usb_modules -> modprobe_usb_sata_modules`	12	`# - add SATA to modprobe_usb_modules -> modprobe_usb_sata_modules`
13	`# - add fscache (for SL5)`	13	`# - add fscache (for SL5)`
14	`# - add ide-cd, sr_mod, cdrom (for SL5 cdrom support)`	14	`# - add ide-cd, sr_mod, cdrom (for SL5 cdrom support)`
15	`# - add aufs (unionfs replacement)`	15	`# - add aufs (unionfs replacement)`
16	`# - to allow LiveCD mounted over NFS (for diskless client)`	16	`# - to allow LiveCD mounted over NFS (for diskless client)`
17	`# - add functions get_dhcp_lease() and load_network_modules()`	17	`# - add functions get_dhcp_lease() and load_network_modules()`
18	`# - add ata_piix to modprobe_usb_sata_modules`	18	`# - add ata_piix to modprobe_usb_sata_modules`
19	`# - works with unionfs 2.x`	19	`# - works with unionfs 2.x`
20	`# - better detection of network card in case of diskless client`	20	`# - better detection of network card in case of diskless client`
21	`#`	21	`#`
22		22
23	`# ===========================================================`	23	`# ===========================================================`
24	`# user interface functions`	24	`# user interface functions`
25	`# ===========================================================`	25	`# ===========================================================`
26		26
27	`# echolog`	27	`# echolog`
28	`# $1 = text to show and to write to /var/log/messages`	28	`# $1 = text to show and to write to /var/log/messages`
29	`#`	29	`#`
30	`echolog()`	30	`echolog()`
31	`{`	31	`{`
32	`echo "LIVECD:" "$@" >>/var/log/livedbg`	32	`echo "LIVECD:" "$@" >>/var/log/livedbg`
33	`echo "$@"`	33	`echo "$@"`
34	`}`	34	`}`
35		35
36	`# debug`	36	`# debug`
37	`# commands executed when debug boot parameter is present`	37	`# commands executed when debug boot parameter is present`
38	`#`	38	`#`
39	`debug()`	39	`debug()`
40	`{`	40	`{`
41	`echo`	41	`echo`
42	`echo "====="`	42	`echo "====="`
43	`echo ": Debugging started. Here is the root shell for you."`	43	`echo ": Debugging started. Here is the root shell for you."`
44	`echo ": Type your desired command or hit Ctrl+D to continue booting."`	44	`echo ": Type your desired command or hit Ctrl+D to continue booting."`
45	`echo`	45	`echo`
46	`ash`	46	`ash`
47	`}`	47	`}`
48		48
49	`# header`	49	`# header`
50	`# $1 = text to show`	50	`# $1 = text to show`
51	`#`	51	`#`
52	`header()`	52	`header()`
53	`{`	53	`{`
54	`echolog "[0;1m$1[0;0m"`	54	`echolog "[0;1m$1[0;0m"`
55	`}`	55	`}`
56		56
57	`fatal()`	57	`fatal()`
58	`{`	58	`{`
59	`header "Fatal error occured - $1"`	59	`header "Fatal error occured - $1"`
60	`echolog "Something went wrong and we can't continue booting :("`	60	`echolog "Something went wrong and we can't continue booting :("`
61	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`	61	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`
62	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`	62	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`
63	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`	63	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`
64	`echolog`	64	`echolog`
65	`ash`	65	`ash`
66	`}`	66	`}`
67		67
68	`# ===========================================================`	68	`# ===========================================================`
69	`# text processing functions`	69	`# text processing functions`
70	`# ===========================================================`	70	`# ===========================================================`
71		71
72	`# egrep_o is a replacement for "egrep -o". It prints only the last`	72	`# egrep_o is a replacement for "egrep -o". It prints only the last`
73	`# matching text`	73	`# matching text`
74	`# $1 = regular expression`	74	`# $1 = regular expression`
75	`#`	75	`#`
76	`egrep_o()`	76	`egrep_o()`
77	`{`	77	`{`
78	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`	78	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`
79	`}`	79	`}`
80		80
81	`# look into cmdline and echo $1 back if $1 is set`	81	`# look into cmdline and echo $1 back if $1 is set`
82	`# $1 = value name, case sensitive, for example livecd_subdir`	82	`# $1 = value name, case sensitive, for example livecd_subdir`
83	`# $2 = file to use instead /proc/cmdline, optional`	83	`# $2 = file to use instead /proc/cmdline, optional`
84	`#`	84	`#`
85	`cmdline_parameter()`	85	`cmdline_parameter()`
86	`{`	86	`{`
87	`CMDLINE=/proc/cmdline`	87	`CMDLINE=/proc/cmdline`
88	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	88	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
89	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`	89	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`
90	`}`	90	`}`
91		91
92	`# look into cmdline and echo value of $1 option`	92	`# look into cmdline and echo value of $1 option`
93	`# $1 = value name, case sensitive, for example livecd_subdir`	93	`# $1 = value name, case sensitive, for example livecd_subdir`
94	`# $2 = file to use instead /proc/cmdline, optional`	94	`# $2 = file to use instead /proc/cmdline, optional`
95	`#`	95	`#`
96	`cmdline_value()`	96	`cmdline_value()`
97	`{`	97	`{`
98	`CMDLINE=/proc/cmdline`	98	`CMDLINE=/proc/cmdline`
99	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	99	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
100	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`	100	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`
101	`}`	101	`}`
102		102
103	`# ===========================================================`	103	`# ===========================================================`
104	`# system functions`	104	`# system functions`
105	`# ===========================================================`	105	`# ===========================================================`
106		106
107	`# modprobe module $1, including all dependencies, suppress all messages`	107	`# modprobe module $1, including all dependencies, suppress all messages`
108	`# (own function because modprobe in busybox doesn't work with gzipped modules)`	108	`# (own function because modprobe in busybox doesn't work with gzipped modules)`
109	`# $1 = module name, eg. ehci-hcd`	109	`# $1 = module name, eg. ehci-hcd`
110	`# $2 = optional argument`	110	`# $2 = optional argument`
111	`#`	111	`#`
112	`modprobe_module()`	112	`modprobe_module()`
113	`{`	113	`{`
114	`if [ "$1" = "" ]; then return 1; fi`	114	`if [ "$1" = "" ]; then return 1; fi`
115	PRINTK=`cat /proc/sys/kernel/printk`	115	PRINTK=`cat /proc/sys/kernel/printk`
116	`echo "0" >/proc/sys/kernel/printk`	116	`echo "0" >/proc/sys/kernel/printk`
117		117
118	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod	118	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod
119	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"	119	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"
120		120
121	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do	121	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do
122	`MODULE=${MODULE%%:}; # remove : at the end, a bug`	122	`MODULE=${MODULE%%:}; # remove : at the end, a bug`
123	TMPMOD="/tmp/`basename $MODULE .gz`";	123	TMPMOD="/tmp/`basename $MODULE .gz`";
124	`# if the module is not loaded already`	124	`# if the module is not loaded already`
125	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then	125	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then
126	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`	126	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`
127	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`	127	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`
128	`insmod $TMPMOD $2; err=$?`	128	`insmod $TMPMOD $2; err=$?`
129	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`	129	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`
130	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`	130	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`
131	`rm $TMPMOD`	131	`rm $TMPMOD`
132	`fi`	132	`fi`
133	`done`	133	`done`
134		134
135	`echo "$PRINTK" >/proc/sys/kernel/printk`	135	`echo "$PRINTK" >/proc/sys/kernel/printk`
136	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`	136	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`
137	`return $err`	137	`return $err`
138	`}`	138	`}`
139		139
140	`# Mount device $1 to $2`	140	`# Mount device $1 to $2`
141	`# $1 = /dev device to mount, eg. /dev/hda1`	141	`# $1 = /dev device to mount, eg. /dev/hda1`
142	`# $2 = mountpoint, eg. /mnt/hda1`	142	`# $2 = mountpoint, eg. /mnt/hda1`
143	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`	143	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`
144	`#`	144	`#`
145	`mount_device()`	145	`mount_device()`
146	`{`	146	`{`
147	`mkdir -p $2`	147	`mkdir -p $2`
148	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`	148	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`
149		149
150	PRINTK=`cat /proc/sys/kernel/printk`	150	PRINTK=`cat /proc/sys/kernel/printk`
151	`echo "0" >/proc/sys/kernel/printk`	151	`echo "0" >/proc/sys/kernel/printk`
152		152
153	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`	153	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`
154	`err=$?`	154	`err=$?`
155		155
156	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`	156	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`
157	`echo "$PRINTK" >/proc/sys/kernel/printk`	157	`echo "$PRINTK" >/proc/sys/kernel/printk`
158	`return $err`	158	`return $err`
159	`}`	159	`}`
160		160
161	`# ===========================================================`	161	`# ===========================================================`
162	`# live module functions`	162	`# live module functions`
163	`# ===========================================================`	163	`# ===========================================================`
164		164
165	`# Create module`	165	`# Create module`
166	`# call mksquashfs with apropriate arguments`	166	`# call mksquashfs with apropriate arguments`
167	`# $1 = directory which will be compressed to squashfs module`	167	`# $1 = directory which will be compressed to squashfs module`
168	`# $2 = output .mo file`	168	`# $2 = output .mo file`
169	`# $3 = optional -keep-as-directory argument`	169	`# $3 = optional -keep-as-directory argument`
170	`#`	170	`#`
171	`create_module()`	171	`create_module()`
172	`{`	172	`{`
173	`mksquashfs $1 $2 $3 >/dev/null`	173	`mksquashfs $1 $2 $3 >/dev/null`
174	`if [ $? -ne 0 ]; then return 1; fi`	174	`if [ $? -ne 0 ]; then return 1; fi`
175	`chmod oga-x $2 # remove execute attrib`	175	`chmod oga-x $2 # remove execute attrib`
176	`}`	176	`}`
177		177
178	`# Mount .mo module to destination directory`	178	`# Mount .mo module to destination directory`
179	`# $1 = path to .mo livecd compressed module`	179	`# $1 = path to .mo livecd compressed module`
180	`# $2 = destination folder`	180	`# $2 = destination folder`
181	`#`	181	`#`
182	`mount_module()`	182	`mount_module()`
183	`{`	183	`{`
184	`mount -t squashfs -o loop,ro $1 $2`	184	`mount -t squashfs -o loop,ro $1 $2`
185	`}`	185	`}`
186		186
187	`# Insert a directory tree $2 to an union specified by $1`	187	`# Insert a directory tree $2 to an union specified by $1`
188	`# Top-level read-write branch is specified by it's index 0`	188	`# Top-level read-write branch is specified by it's index 0`
189	`# $1 = union absolute path (starting with /)`	189	`# $1 = union absolute path (starting with /)`
190	`# $2 = path to data directory`	190	`# $2 = path to data directory`
191	`#`	191	`#`
192	`union_insert_dir()`	192	`union_insert_dir()`
193	`{`	193	`{`
194	`which unionctl >/dev/null 2>&1`	194	`which unionctl >/dev/null 2>&1`
195	`if [ $? -eq 0 ]; then`	195	`if [ $? -eq 0 ]; then`
196	`# unionfs 1.x or aufs`	196	`# unionfs 1.x or aufs`
197	`unionctl "$1" --add --after 0 --mode ro "$2"`	197	`unionctl "$1" --add --after 0 --mode ro "$2"`
198	`else`	198	`else`
199	`# unionfs 2.x`	199	`# unionfs 2.x`
200	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`	200	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`
201	`fi`	201	`fi`
202	`}`	202	`}`
203		203
204	`# List all modules in all directories (base, modules, optional)`	204	`# List all modules in all directories (base, modules, optional)`
205	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`	205	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`
206	`# $1 = root directory of mounted DATAdir`	206	`# $1 = root directory of mounted DATAdir`
207	`#`	207	`#`
208	`list_modules()`	208	`list_modules()`
209	`{`	209	`{`
210	LOAD="`cmdline_value load`"	210	LOAD="`cmdline_value load`"
211	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`	211	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`
212	MODNAME="`basename $LINE .mo`"	212	MODNAME="`basename $LINE .mo`"
213	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue	213	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue
214	`else echo $LINE; fi`	214	`else echo $LINE; fi`
215	`done`	215	`done`
216	`}`	216	`}`
217		217
218	`# Insert one single .mo module to the union`	218	`# Insert one single .mo module to the union`
219	`# $1 = union absolute path (starting with /)`	219	`# $1 = union absolute path (starting with /)`
220	`# $2 = module.mo full path`	220	`# $2 = module.mo full path`
221	`# $3 = destination folder, where images will be mounted to`	221	`# $3 = destination folder, where images will be mounted to`
222	`#`	222	`#`
223	`union_insert_module()`	223	`union_insert_module()`
224	`{`	224	`{`
225	TARGET="$3/`basename $2`"	225	TARGET="$3/`basename $2`"
226	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`	226	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`
227	`mkdir -p $TARGET`	227	`mkdir -p $TARGET`
228	`mount_module $2 $TARGET`	228	`mount_module $2 $TARGET`
229	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`	229	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`
230	`union_insert_dir $1 $TARGET;`	230	`union_insert_dir $1 $TARGET;`
231	`}`	231	`}`
232		232
233	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`	233	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`
234	`# $1 = union absolute path (starting with /)`	234	`# $1 = union absolute path (starting with /)`
235	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`	235	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`
236	`# $3 = destination folder, where images will be mounted to`	236	`# $3 = destination folder, where images will be mounted to`
237	`#`	237	`#`
238	`union_insert_modules()`	238	`union_insert_modules()`
239	`{`	239	`{`
240	PRINTK=`cat /proc/sys/kernel/printk`	240	PRINTK=`cat /proc/sys/kernel/printk`
241	`echo "0" >/proc/sys/kernel/printk`	241	`echo "0" >/proc/sys/kernel/printk`
242		242
243	`list_modules $2 \| while read MODULE; do`	243	`list_modules $2 \| while read MODULE; do`
244	echo " -> `basename $MODULE`"	244	echo " -> `basename $MODULE`"
245	`union_insert_module $1 $MODULE $3`	245	`union_insert_module $1 $MODULE $3`
246	`done`	246	`done`
247		247
248	`echo "$PRINTK" >/proc/sys/kernel/printk`	248	`echo "$PRINTK" >/proc/sys/kernel/printk`
249	`}`	249	`}`
250		250
251	`# Copy modules to RAM directory`	251	`# Copy modules to RAM directory`
252	`# $1 = data directory`	252	`# $1 = data directory`
253	`# $2 = target directory in RAM`	253	`# $2 = target directory in RAM`
254	`#`	254	`#`
255	`copy_to_ram()`	255	`copy_to_ram()`
256	`{`	256	`{`
257	`cp -R $1/* $2`	257	`cp -R $1/* $2`
258	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`	258	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`
259	`}`	259	`}`
260		260
261	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`	261	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`
262	`# $1 = source`	262	`# $1 = source`
263	`# $2 = destination`	263	`# $2 = destination`
264	`#`	264	`#`
265	`copy_rootchanges()`	265	`copy_rootchanges()`
266	`{`	266	`{`
267	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`	267	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`
268	`}`	268	`}`
269		269
270	`# ===========================================================`	270	`# ===========================================================`
271	`# discovery functions`	271	`# discovery functions`
272	`# ===========================================================`	272	`# ===========================================================`
273		273
274	`# List all CD-ROMs`	274	`# List all CD-ROMs`
275	`# by using /proc entries`	275	`# by using /proc entries`
276	`#`	276	`#`
277	`list_cdrom_devices()`	277	`list_cdrom_devices()`
278	`{`	278	`{`
279	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi	279	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi
280	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do	280	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do
281	`echo "/dev/$CDDEVICE"`	281	`echo "/dev/$CDDEVICE"`
282	`done`	282	`done`
283	`}`	283	`}`
284		284
285	`# List all partition devices`	285	`# List all partition devices`
286	`# take list of all partitions and output unique disks.`	286	`# take list of all partitions and output unique disks.`
287	`# Return empty result when nohd parameter was given.`	287	`# Return empty result when nohd parameter was given.`
288	`#`	288	`#`
289	`list_partition_devices()`	289	`list_partition_devices()`
290	`{`	290	`{`
291	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi	291	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi
292	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`	292	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`
293	`}`	293	`}`
294		294
295	`# List all disk devices`	295	`# List all disk devices`
296	`#`	296	`#`
297	`list_disk_devices()`	297	`list_disk_devices()`
298	`{`	298	`{`
299	`list_partition_devices \| egrep -v "[0-9]"`	299	`list_partition_devices \| egrep -v "[0-9]"`
300	`}`	300	`}`
301		301
302	`# List all block devices`	302	`# List all block devices`
303	`#`	303	`#`
304	`list_block_devices()`	304	`list_block_devices()`
305	`{`	305	`{`
306	`list_cdrom_devices`	306	`list_cdrom_devices`
307	`list_partition_devices`	307	`list_partition_devices`
308	`}`	308	`}`
309		309
310	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`	310	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`
311	`# If LiveCD found in the device, echo dirname of it's directory,`	311	`# If LiveCD found in the device, echo dirname of it's directory,`
312	`# and leave the device mounted. Mounting is not ro, but without any argument.`	312	`# and leave the device mounted. Mounting is not ro, but without any argument.`
313	`# $1 = directory where devices will be mounted`	313	`# $1 = directory where devices will be mounted`
314	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`	314	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`
315	`#`	315	`#`
316	`find_live_data_dir()`	316	`find_live_data_dir()`
317	`{`	317	`{`
318	`if [ "$NFSROOT" != "" ]; then`	318	`if [ "$NFSROOT" != "" ]; then`
319	`DIR="/$1/nfs"`	319	`DIR="/$1/nfs"`
320	`mkdir -p $DIR`	320	`mkdir -p $DIR`
321		321
322	`# disable kernel warnings`	322	`# disable kernel warnings`
323	PRINTK=`cat /proc/sys/kernel/printk`	323	PRINTK=`cat /proc/sys/kernel/printk`
324	`echo "0" >/proc/sys/kernel/printk`	324	`echo "0" >/proc/sys/kernel/printk`
325	`# try to mount nfs dir`	325	`# try to mount nfs dir`
326	`mount -t nfs -o nolock,ro,rsize=8192,wsize=8192,hard,intr $NFSROOT $DIR`	326	`mount -t nfs -o nolock,ro,rsize=8192,wsize=8192,hard,intr $NFSROOT $DIR`
327	`# enable kernel warnings`	327	`# enable kernel warnings`
328	`echo "$PRINTK" >/proc/sys/kernel/printk`	328	`echo "$PRINTK" >/proc/sys/kernel/printk`
329		329
330	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	330	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
331	`if [ "$FOUND" != "" ]; then`	331	`if [ "$FOUND" != "" ]; then`
332	`dirname "$FOUND"`	332	`dirname "$FOUND"`
333	`fi`	333	`fi`
334	`else`	334	`else`
335	`list_block_devices \| while read DEVICE; do`	335	`list_block_devices \| while read DEVICE; do`
336	DIR="/$1/`basename $DEVICE`"	336	DIR="/$1/`basename $DEVICE`"
337	`mount_device $DEVICE $DIR`	337	`mount_device $DEVICE $DIR`
338	`if [ $? -ne 0 ]; then continue; fi`	338	`if [ $? -ne 0 ]; then continue; fi`
339	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	339	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
340	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`	340	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`
341	`else dirname "$FOUND"; return 1; fi`	341	`else dirname "$FOUND"; return 1; fi`
342	`done`	342	`done`
343	`fi`	343	`fi`
344	`}`	344	`}`
345		345
346	`# ===========================================================`	346	`# ===========================================================`
347	`# hardware preparation functions`	347	`# hardware preparation functions`
348	`# ===========================================================`	348	`# ===========================================================`
349		349
350	`# Create block devices to /dev described by /sys entries`	350	`# Create block devices to /dev described by /sys entries`
351	`#`	351	`#`
352	`create_block_devices()`	352	`create_block_devices()`
353	`{`	353	`{`
354	`echolog "creating /dev entries for block devices"`	354	`echolog "creating /dev entries for block devices"`
355	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`	355	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`
356	DEVICE="/dev/`basename \`dirname $BLOCK\``"	356	DEVICE="/dev/`basename \`dirname $BLOCK\``"
357	`if [ ! -b $DEVICE ]; then`	357	`if [ ! -b $DEVICE ]; then`
358	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"	358	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"
359	`mknod $DEVICE b $MINORMAJOR`	359	`mknod $DEVICE b $MINORMAJOR`
360	`fi`	360	`fi`
361	`done`	361	`done`
362	`}`	362	`}`
363		363
364	`# modprobe kernel modules needed for the LiveCD`	364	`# modprobe kernel modules needed for the LiveCD`
365	`#`	365	`#`
366	`modprobe_essential_modules()`	366	`modprobe_essential_modules()`
367	`{`	367	`{`
368	`echolog "starting loop device support"`	368	`echolog "starting loop device support"`
369	`modprobe_module loop max_loop=255`	369	`modprobe_module loop max_loop=32`
370	`echolog "starting cdrom support"`	370	`echolog "starting cdrom support"`
371	`modprobe_module ide_cd`	371	`modprobe_module ide_cd`
372	`modprobe_module ide-cd`	372	`modprobe_module ide-cd`
373	`modprobe_module sr_mod`	373	`modprobe_module sr_mod`
374	`modprobe_module cdrom`	374	`modprobe_module cdrom`
375	`echolog "starting cdrom filesystem support"`	375	`echolog "starting cdrom filesystem support"`
376	`modprobe_module isofs`	376	`modprobe_module isofs`
377	`echolog "starting squashfs support"`	377	`echolog "starting squashfs support"`
378	`modprobe_module squashfs`	378	`modprobe_module squashfs`
379	`echolog "starting unionfs/aufs support"`	379	`echolog "starting unionfs/aufs support"`
380	`modprobe_module unionfs`	380	`modprobe_module unionfs`
381	`modprobe_module aufs`	381	`modprobe_module aufs`
382	`echolog "starting vfat support"`	382	`echolog "starting vfat support"`
383	`modprobe_module nls_cp437`	383	`modprobe_module nls_cp437`
384	`modprobe_module nls_iso8859-1`	384	`modprobe_module nls_iso8859-1`
385	`modprobe_module nls_iso8859-2`	385	`modprobe_module nls_iso8859-2`
386	`modprobe_module vfat`	386	`modprobe_module vfat`
387	`echolog "starting ntfs support"`	387	`echolog "starting ntfs support"`
388	`modprobe_module ntfs`	388	`modprobe_module ntfs`
389	`create_block_devices`	389	`create_block_devices`
390	`}`	390	`}`
391		391
392		392
393	`# modprobe kernel modules needed for USB masstorage devices`	393	`# modprobe kernel modules needed for USB masstorage devices`
394	`#`	394	`#`
395	`modprobe_usb_sata_modules()`	395	`modprobe_usb_sata_modules()`
396	`{`	396	`{`
397	`echolog "starting USB and SATA support"`	397	`echolog "starting USB and SATA support"`
398	`modprobe_module ehci-hcd`	398	`modprobe_module ehci-hcd`
399	`modprobe_module ohci-hcd`	399	`modprobe_module ohci-hcd`
400	`modprobe_module uhci-hcd`	400	`modprobe_module uhci-hcd`
401	`modprobe_module scsi_mod`	401	`modprobe_module scsi_mod`
402		402
403	`modprobe_module libata`	403	`modprobe_module libata`
404	`modprobe_module ata_piix`	404	`modprobe_module ata_piix`
405	`modprobe_module ahci`	405	`modprobe_module ahci`
406		406
407	`modprobe_module sd_mod`	407	`modprobe_module sd_mod`
408	`modprobe_module sr_mod`	408	`modprobe_module sr_mod`
409	`modprobe_module usb-storage`	409	`modprobe_module usb-storage`
410	`echolog "waiting for USB devices, max 9 seconds"`	410	`echolog "waiting for USB devices, max 9 seconds"`
411	`sleep 9`	411	`sleep 9`
412	`create_block_devices`	412	`create_block_devices`
413	`}`	413	`}`
414		414
415	`# modprobe nfs kernel modules`	415	`# modprobe nfs kernel modules`
416	`#`	416	`#`
417	`modprobe_nfs_modules()`	417	`modprobe_nfs_modules()`
418	`{`	418	`{`
419	`echolog "starting nfs support"`	419	`echolog "starting nfs support"`
420	`modprobe_module lockd`	420	`modprobe_module lockd`
421	`modprobe_module fscache`	421	`modprobe_module fscache`
422	`modprobe_module nfs_acl`	422	`modprobe_module nfs_acl`
423	`modprobe_module nfs`	423	`modprobe_module nfs`
424	`}`	424	`}`
425		425
426	`# enable/disable CD autoejecting when unmounted`	426	`# enable/disable CD autoejecting when unmounted`
427	`# $1 = 1\|0 ... enable\|disable`	427	`# $1 = 1\|0 ... enable\|disable`
428	`#`	428	`#`
429	`cd_autoeject()`	429	`cd_autoeject()`
430	`{`	430	`{`
431	`echo $1 >/proc/sys/dev/cdrom/autoeject`	431	`echo $1 >/proc/sys/dev/cdrom/autoeject`
432	`}`	432	`}`
433		433
434	`# Disable DMA if nodma boot parameter is present`	434	`# Disable DMA if nodma boot parameter is present`
435	`#`	435	`#`
436	`setup_dma()`	436	`setup_dma()`
437	`{`	437	`{`
438	if [ ! "`cmdline_parameter nodma`" = "" ]; then	438	if [ ! "`cmdline_parameter nodma`" = "" ]; then
439	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do	439	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do
440	`echolog "setting DMA support off for $DEVICE"`	440	`echolog "setting DMA support off for $DEVICE"`
441	`hdparm -d 0 $DEVICE`	441	`hdparm -d 0 $DEVICE`
442	`done`	442	`done`
443	`fi`	443	`fi`
444	`}`	444	`}`
445		445
446	`# create correct fstab file in $1/etc/fstab and create apropriate`	446	`# create correct fstab file in $1/etc/fstab and create apropriate`
447	`# mount directories in $1`	447	`# mount directories in $1`
448	`# $1 = root directory (union)`	448	`# $1 = root directory (union)`
449	`#`	449	`#`
450	`activate_fstab()`	450	`activate_fstab()`
451	`{`	451	`{`
452	`mkdir -p $1/etc`	452	`mkdir -p $1/etc`
453	`FSTAB="$1/etc/fstab"`	453	`FSTAB="$1/etc/fstab"`
454	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`	454	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`
455	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`	455	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`
456	`echo "proc /proc proc defaults 0 0" >>$FSTAB`	456	`echo "proc /proc proc defaults 0 0" >>$FSTAB`
457		457
458	`# all the rest will be done by runlast or by fstab-sync`	458	`# all the rest will be done by runlast or by fstab-sync`
459	`# search for SWAP done later in /etc/rc.sysinit`	459	`# search for SWAP done later in /etc/rc.sysinit`
460	`}`	460	`}`
461		461
462		462
463	`# ===========================================================`	463	`# ===========================================================`
464	`# functions used for LiveCD on NFS`	464	`# functions used for LiveCD on NFS`
465	`# ===========================================================`	465	`# ===========================================================`
466		466
467	`# load network modules, if NFSROOT is set`	467	`# load network modules, if NFSROOT is set`
468	`# Urs Beyerle, PSI`	468	`# Urs Beyerle, PSI`
469	`#`	469	`#`
470		470
471	`# 1. load network driver defined by kernel parameter nic`	471	`# 1. load network driver defined by kernel parameter nic`
472	`#`	472	`#`
473	`load_network_module_nic()`	473	`load_network_module_nic()`
474	`{`	474	`{`
475	`if [ -n "$NIC" ] && [ "$NIC" != "auto" ]; then`	475	`if [ -n "$NIC" ] && [ "$NIC" != "auto" ]; then`
476	`echolog "load module $NIC"`	476	`echolog "load module $NIC"`
477	`modprobe_module $NIC`	477	`modprobe_module $NIC`
478	`# FOUND_NIC="yes" # we are not yet sure ;-)`	478	`# FOUND_NIC="yes" # we are not yet sure ;-)`
479	`fi`	479	`fi`
480	`}`	480	`}`
481		481
482	`# 2. detecting network card from pcitable list`	482	`# 2. detecting network card from pcitable list`
483	`#`	483	`#`
484	`load_network_module_pcitable()`	484	`load_network_module_pcitable()`
485	`{`	485	`{`
486	`PCITABLE=/bin/pcitable`	486	`PCITABLE=/bin/pcitable`
487	NICS=`lspci -n \| awk '/Class 0200/ {print $4}' \| tr ':' ' ' \	487	NICS=`lspci -n \| awk '/Class 0200/ {print $4}' \| tr ':' ' ' \
488	`\| while read x y ; do grep "0x$x.*0x$y" $PCITABLE \`	488	`\| while read x y ; do grep "0x$x.*0x$y" $PCITABLE \`
489	\| awk '$3 !~ /"unknown"/ {print $3}' \| tr -d '"' ; done`	489	\| awk '$3 !~ /"unknown"/ {print $3}' \| tr -d '"' ; done`
490		490
491	`if [ -n "$NICS" ]; then`	491	`if [ -n "$NICS" ]; then`
492	`echolog "found network card(s): $NICS"`	492	`echolog "found network card(s): $NICS"`
493	`for driver in $NICS; do`	493	`for driver in $NICS; do`
494	`echolog "load module $driver"`	494	`echolog "load module $driver"`
495	`modprobe_module $driver`	495	`modprobe_module $driver`
496	`FOUND_NIC="$driver"`	496	`FOUND_NIC="$driver"`
497	`done`	497	`done`
498	`fi`	498	`fi`
499	`}`	499	`}`
500		500

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