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
# - add sg, sata_nv module
#
 
# ===========================================================
# 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 sata_nv
   modprobe_module sg
 
   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
#
 
# network devices found ?
#
found_nic()
{
    found="1"
    PRINTK=`cat /proc/sys/kernel/printk`
    echo "0" >/proc/sys/kernel/printk
    for iface in eth0 eth1 eth2 eth3 eth4 eth5; do
	# nic already found ?
	echo $FOUND_IFACE | grep -q $iface 
	if [ $? -ne 0 ]; then
	    ifconfig $iface > /dev/null 2>&1
	    if [ $? -eq 0 ]; then 
		FOUND_IFACE="$FOUND_IFACE $iface"
		found="0"
	    fi
	fi
    done
    echo "$PRINTK" >/proc/sys/kernel/printk
    return $found
}
 
# 1. load network driver defined by kernel parameter nic
#
load_network_module_nic()
{
    NIC="`cmdline_value nic`"
    if [ -n "$NIC" ]; then
	echolog "load module $NIC"
	modprobe_module $NIC
    fi
}
 
 
# 2. auto probe for network card drivers
#
load_network_module_auto()
{
    echolog "auto-detection of network driver ..."
    FOUND_NICS=""
    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
	found_nic
	if [ $? -eq 0 ]; then
	    echolog "found network card $driver"
	    echolog "load module $driver"
	    FOUND_NICS="$FOUND_NICS $driver"
	else
	    rmmod $driver > /dev/null 2>&1
	fi
    done
 
    # clean up: remove unused modules until driver "mii"
    LOADED_DRIVERS="`lsmod | grep -v Module | cut -d" " -f1`"
    for driver in $LOADED_DRIVERS; do
	[ "$driver" = "mii" ]  && break
	[ "$driver" = "ntfs" ] && break
	[ "$driver" = "vfat" ] && break
	do_not_remove=""
	for nic in $FOUND_NICS; do
	    echo $driver | grep -q $nic 
	    [ $? -eq 0 ] && do_not_remove="$driver"
	done
	[ ! $do_not_remove ] && rmmod $driver > /dev/null 2>&1
    done
}
 
# 3. 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
	done
    fi
}
 
# 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 driver
    modprobe_module mii
 
    FOUND_IFACE=""
    load_network_module_nic
    found_nic          || load_network_module_auto
    [ "$FOUND_IFACE" ] || load_network_module_pcitable
    [ "$FOUND_IFACE" ] || 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 eth1 eth2 eth3 eth4 eth5; do
	# interface up ?
	ifconfig $iface > /dev/null 2>&1
	if [ $? -eq 0 ]; then
	    # get dhcp lease
	    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 on $iface."
	fi
    done
}
 

Rev 148	Rev 149
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	`# - add sg, sata_nv module`	21	`# - add sg, sata_nv module`
22	`#`	22	`#`
23		23
24	`# ===========================================================`	24	`# ===========================================================`
25	`# user interface functions`	25	`# user interface functions`
26	`# ===========================================================`	26	`# ===========================================================`
27		27
28	`# echolog`	28	`# echolog`
29	`# $1 = text to show and to write to /var/log/messages`	29	`# $1 = text to show and to write to /var/log/messages`
30	`#`	30	`#`
31	`echolog()`	31	`echolog()`
32	`{`	32	`{`
33	`echo "LIVECD:" "$@" >>/var/log/livedbg`	33	`echo "LIVECD:" "$@" >>/var/log/livedbg`
34	`echo "$@"`	34	`echo "$@"`
35	`}`	35	`}`
36		36
37	`# debug`	37	`# debug`
38	`# commands executed when debug boot parameter is present`	38	`# commands executed when debug boot parameter is present`
39	`#`	39	`#`
40	`debug()`	40	`debug()`
41	`{`	41	`{`
42	`echo`	42	`echo`
43	`echo "====="`	43	`echo "====="`
44	`echo ": Debugging started. Here is the root shell for you."`	44	`echo ": Debugging started. Here is the root shell for you."`
45	`echo ": Type your desired command or hit Ctrl+D to continue booting."`	45	`echo ": Type your desired command or hit Ctrl+D to continue booting."`
46	`echo`	46	`echo`
47	`ash`	47	`ash`
48	`}`	48	`}`
49		49
50	`# header`	50	`# header`
51	`# $1 = text to show`	51	`# $1 = text to show`
52	`#`	52	`#`
53	`header()`	53	`header()`
54	`{`	54	`{`
55	`echolog "[0;1m$1[0;0m"`	55	`echolog "[0;1m$1[0;0m"`
56	`}`	56	`}`
57		57
58	`fatal()`	58	`fatal()`
59	`{`	59	`{`
60	`header "Fatal error occured - $1"`	60	`header "Fatal error occured - $1"`
61	`echolog "Something went wrong and we can't continue booting :("`	61	`echolog "Something went wrong and we can't continue booting :("`
62	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`	62	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`
63	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`	63	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`
64	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`	64	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`
65	`echolog`	65	`echolog`
66	`ash`	66	`ash`
67	`}`	67	`}`
68		68
69	`# ===========================================================`	69	`# ===========================================================`
70	`# text processing functions`	70	`# text processing functions`
71	`# ===========================================================`	71	`# ===========================================================`
72		72
73	`# egrep_o is a replacement for "egrep -o". It prints only the last`	73	`# egrep_o is a replacement for "egrep -o". It prints only the last`
74	`# matching text`	74	`# matching text`
75	`# $1 = regular expression`	75	`# $1 = regular expression`
76	`#`	76	`#`
77	`egrep_o()`	77	`egrep_o()`
78	`{`	78	`{`
79	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`	79	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`
80	`}`	80	`}`
81		81
82	`# look into cmdline and echo $1 back if $1 is set`	82	`# look into cmdline and echo $1 back if $1 is set`
83	`# $1 = value name, case sensitive, for example livecd_subdir`	83	`# $1 = value name, case sensitive, for example livecd_subdir`
84	`# $2 = file to use instead /proc/cmdline, optional`	84	`# $2 = file to use instead /proc/cmdline, optional`
85	`#`	85	`#`
86	`cmdline_parameter()`	86	`cmdline_parameter()`
87	`{`	87	`{`
88	`CMDLINE=/proc/cmdline`	88	`CMDLINE=/proc/cmdline`
89	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	89	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
90	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`	90	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`
91	`}`	91	`}`
92		92
93	`# look into cmdline and echo value of $1 option`	93	`# look into cmdline and echo value of $1 option`
94	`# $1 = value name, case sensitive, for example livecd_subdir`	94	`# $1 = value name, case sensitive, for example livecd_subdir`
95	`# $2 = file to use instead /proc/cmdline, optional`	95	`# $2 = file to use instead /proc/cmdline, optional`
96	`#`	96	`#`
97	`cmdline_value()`	97	`cmdline_value()`
98	`{`	98	`{`
99	`CMDLINE=/proc/cmdline`	99	`CMDLINE=/proc/cmdline`
100	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	100	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
101	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`	101	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`
102	`}`	102	`}`
103		103
104	`# ===========================================================`	104	`# ===========================================================`
105	`# system functions`	105	`# system functions`
106	`# ===========================================================`	106	`# ===========================================================`
107		107
108	`# modprobe module $1, including all dependencies, suppress all messages`	108	`# modprobe module $1, including all dependencies, suppress all messages`
109	`# (own function because modprobe in busybox doesn't work with gzipped modules)`	109	`# (own function because modprobe in busybox doesn't work with gzipped modules)`
110	`# $1 = module name, eg. ehci-hcd`	110	`# $1 = module name, eg. ehci-hcd`
111	`# $2 = optional argument`	111	`# $2 = optional argument`
112	`#`	112	`#`
113	`modprobe_module()`	113	`modprobe_module()`
114	`{`	114	`{`
115	`if [ "$1" = "" ]; then return 1; fi`	115	`if [ "$1" = "" ]; then return 1; fi`
116	PRINTK=`cat /proc/sys/kernel/printk`	116	PRINTK=`cat /proc/sys/kernel/printk`
117	`echo "0" >/proc/sys/kernel/printk`	117	`echo "0" >/proc/sys/kernel/printk`
118		118
119	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod	119	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod
120	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"	120	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"
121		121
122	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do	122	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do
123	`MODULE=${MODULE%%:}; # remove : at the end, a bug`	123	`MODULE=${MODULE%%:}; # remove : at the end, a bug`
124	TMPMOD="/tmp/`basename $MODULE .gz`";	124	TMPMOD="/tmp/`basename $MODULE .gz`";
125	`# if the module is not loaded already`	125	`# if the module is not loaded already`
126	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then	126	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then
127	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`	127	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`
128	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`	128	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`
129	`insmod $TMPMOD $2; err=$?`	129	`insmod $TMPMOD $2; err=$?`
130	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`	130	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`
131	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`	131	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`
132	`rm $TMPMOD`	132	`rm $TMPMOD`
133	`fi`	133	`fi`
134	`done`	134	`done`
135		135
136	`echo "$PRINTK" >/proc/sys/kernel/printk`	136	`echo "$PRINTK" >/proc/sys/kernel/printk`
137	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`	137	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`
138	`return $err`	138	`return $err`
139	`}`	139	`}`
140		140
141	`# Mount device $1 to $2`	141	`# Mount device $1 to $2`
142	`# $1 = /dev device to mount, eg. /dev/hda1`	142	`# $1 = /dev device to mount, eg. /dev/hda1`
143	`# $2 = mountpoint, eg. /mnt/hda1`	143	`# $2 = mountpoint, eg. /mnt/hda1`
144	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`	144	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`
145	`#`	145	`#`
146	`mount_device()`	146	`mount_device()`
147	`{`	147	`{`
148	`mkdir -p $2`	148	`mkdir -p $2`
149	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`	149	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`
150		150
151	PRINTK=`cat /proc/sys/kernel/printk`	151	PRINTK=`cat /proc/sys/kernel/printk`
152	`echo "0" >/proc/sys/kernel/printk`	152	`echo "0" >/proc/sys/kernel/printk`
153		153
154	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`	154	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`
155	`err=$?`	155	`err=$?`
156		156
157	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`	157	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`
158	`echo "$PRINTK" >/proc/sys/kernel/printk`	158	`echo "$PRINTK" >/proc/sys/kernel/printk`
159	`return $err`	159	`return $err`
160	`}`	160	`}`
161		161
162	`# ===========================================================`	162	`# ===========================================================`
163	`# live module functions`	163	`# live module functions`
164	`# ===========================================================`	164	`# ===========================================================`
165		165
166	`# Create module`	166	`# Create module`
167	`# call mksquashfs with apropriate arguments`	167	`# call mksquashfs with apropriate arguments`
168	`# $1 = directory which will be compressed to squashfs module`	168	`# $1 = directory which will be compressed to squashfs module`
169	`# $2 = output .mo file`	169	`# $2 = output .mo file`
170	`# $3 = optional -keep-as-directory argument`	170	`# $3 = optional -keep-as-directory argument`
171	`#`	171	`#`
172	`create_module()`	172	`create_module()`
173	`{`	173	`{`
174	`mksquashfs $1 $2 $3 >/dev/null`	174	`mksquashfs $1 $2 $3 >/dev/null`
175	`if [ $? -ne 0 ]; then return 1; fi`	175	`if [ $? -ne 0 ]; then return 1; fi`
176	`chmod oga-x $2 # remove execute attrib`	176	`chmod oga-x $2 # remove execute attrib`
177	`}`	177	`}`
178		178
179	`# Mount .mo module to destination directory`	179	`# Mount .mo module to destination directory`
180	`# $1 = path to .mo livecd compressed module`	180	`# $1 = path to .mo livecd compressed module`
181	`# $2 = destination folder`	181	`# $2 = destination folder`
182	`#`	182	`#`
183	`mount_module()`	183	`mount_module()`
184	`{`	184	`{`
185	`mount -t squashfs -o loop,ro $1 $2`	185	`mount -t squashfs -o loop,ro $1 $2`
186	`}`	186	`}`
187		187
188	`# Insert a directory tree $2 to an union specified by $1`	188	`# Insert a directory tree $2 to an union specified by $1`
189	`# Top-level read-write branch is specified by it's index 0`	189	`# Top-level read-write branch is specified by it's index 0`
190	`# $1 = union absolute path (starting with /)`	190	`# $1 = union absolute path (starting with /)`
191	`# $2 = path to data directory`	191	`# $2 = path to data directory`
192	`#`	192	`#`
193	`union_insert_dir()`	193	`union_insert_dir()`
194	`{`	194	`{`
195	`which unionctl >/dev/null 2>&1`	195	`which unionctl >/dev/null 2>&1`
196	`if [ $? -eq 0 ]; then`	196	`if [ $? -eq 0 ]; then`
197	`# unionfs 1.x or aufs`	197	`# unionfs 1.x or aufs`
198	`unionctl "$1" --add --after 0 --mode ro "$2"`	198	`unionctl "$1" --add --after 0 --mode ro "$2"`
199	`else`	199	`else`
200	`# unionfs 2.x`	200	`# unionfs 2.x`
201	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`	201	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`
202	`fi`	202	`fi`
203	`}`	203	`}`
204		204
205	`# List all modules in all directories (base, modules, optional)`	205	`# List all modules in all directories (base, modules, optional)`
206	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`	206	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`
207	`# $1 = root directory of mounted DATAdir`	207	`# $1 = root directory of mounted DATAdir`
208	`#`	208	`#`
209	`list_modules()`	209	`list_modules()`
210	`{`	210	`{`
211	LOAD="`cmdline_value load`"	211	LOAD="`cmdline_value load`"
212	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`	212	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`
213	MODNAME="`basename $LINE .mo`"	213	MODNAME="`basename $LINE .mo`"
214	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue	214	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue
215	`else echo $LINE; fi`	215	`else echo $LINE; fi`
216	`done`	216	`done`
217	`}`	217	`}`
218		218
219	`# Insert one single .mo module to the union`	219	`# Insert one single .mo module to the union`
220	`# $1 = union absolute path (starting with /)`	220	`# $1 = union absolute path (starting with /)`
221	`# $2 = module.mo full path`	221	`# $2 = module.mo full path`
222	`# $3 = destination folder, where images will be mounted to`	222	`# $3 = destination folder, where images will be mounted to`
223	`#`	223	`#`
224	`union_insert_module()`	224	`union_insert_module()`
225	`{`	225	`{`
226	TARGET="$3/`basename $2`"	226	TARGET="$3/`basename $2`"
227	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`	227	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`
228	`mkdir -p $TARGET`	228	`mkdir -p $TARGET`
229	`mount_module $2 $TARGET`	229	`mount_module $2 $TARGET`
230	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`	230	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`
231	`union_insert_dir $1 $TARGET;`	231	`union_insert_dir $1 $TARGET;`
232	`}`	232	`}`
233		233
234	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`	234	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`
235	`# $1 = union absolute path (starting with /)`	235	`# $1 = union absolute path (starting with /)`
236	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`	236	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`
237	`# $3 = destination folder, where images will be mounted to`	237	`# $3 = destination folder, where images will be mounted to`
238	`#`	238	`#`
239	`union_insert_modules()`	239	`union_insert_modules()`
240	`{`	240	`{`
241	PRINTK=`cat /proc/sys/kernel/printk`	241	PRINTK=`cat /proc/sys/kernel/printk`
242	`echo "0" >/proc/sys/kernel/printk`	242	`echo "0" >/proc/sys/kernel/printk`
243		243
244	`list_modules $2 \| while read MODULE; do`	244	`list_modules $2 \| while read MODULE; do`
245	echo " -> `basename $MODULE`"	245	echo " -> `basename $MODULE`"
246	`union_insert_module $1 $MODULE $3`	246	`union_insert_module $1 $MODULE $3`
247	`done`	247	`done`
248		248
249	`echo "$PRINTK" >/proc/sys/kernel/printk`	249	`echo "$PRINTK" >/proc/sys/kernel/printk`
250	`}`	250	`}`
251		251
252	`# Copy modules to RAM directory`	252	`# Copy modules to RAM directory`
253	`# $1 = data directory`	253	`# $1 = data directory`
254	`# $2 = target directory in RAM`	254	`# $2 = target directory in RAM`
255	`#`	255	`#`
256	`copy_to_ram()`	256	`copy_to_ram()`
257	`{`	257	`{`
258	`cp -R $1/* $2`	258	`cp -R $1/* $2`
259	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`	259	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`
260	`}`	260	`}`
261		261
262	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`	262	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`
263	`# $1 = source`	263	`# $1 = source`
264	`# $2 = destination`	264	`# $2 = destination`
265	`#`	265	`#`
266	`copy_rootchanges()`	266	`copy_rootchanges()`
267	`{`	267	`{`
268	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`	268	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`
269	`}`	269	`}`
270		270
271	`# ===========================================================`	271	`# ===========================================================`
272	`# discovery functions`	272	`# discovery functions`
273	`# ===========================================================`	273	`# ===========================================================`
274		274
275	`# List all CD-ROMs`	275	`# List all CD-ROMs`
276	`# by using /proc entries`	276	`# by using /proc entries`
277	`#`	277	`#`
278	`list_cdrom_devices()`	278	`list_cdrom_devices()`
279	`{`	279	`{`
280	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi	280	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi
281	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do	281	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do
282	`echo "/dev/$CDDEVICE"`	282	`echo "/dev/$CDDEVICE"`
283	`done`	283	`done`
284	`}`	284	`}`
285		285
286	`# List all partition devices`	286	`# List all partition devices`
287	`# take list of all partitions and output unique disks.`	287	`# take list of all partitions and output unique disks.`
288	`# Return empty result when nohd parameter was given.`	288	`# Return empty result when nohd parameter was given.`
289	`#`	289	`#`
290	`list_partition_devices()`	290	`list_partition_devices()`
291	`{`	291	`{`
292	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi	292	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi
293	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`	293	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`
294	`}`	294	`}`
295		295
296	`# List all disk devices`	296	`# List all disk devices`
297	`#`	297	`#`
298	`list_disk_devices()`	298	`list_disk_devices()`
299	`{`	299	`{`
300	`list_partition_devices \| egrep -v "[0-9]"`	300	`list_partition_devices \| egrep -v "[0-9]"`
301	`}`	301	`}`
302		302
303	`# List all block devices`	303	`# List all block devices`
304	`#`	304	`#`
305	`list_block_devices()`	305	`list_block_devices()`
306	`{`	306	`{`
307	`list_cdrom_devices`	307	`list_cdrom_devices`
308	`list_partition_devices`	308	`list_partition_devices`
309	`}`	309	`}`
310		310
311	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`	311	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`
312	`# If LiveCD found in the device, echo dirname of it's directory,`	312	`# If LiveCD found in the device, echo dirname of it's directory,`
313	`# and leave the device mounted. Mounting is not ro, but without any argument.`	313	`# and leave the device mounted. Mounting is not ro, but without any argument.`
314	`# $1 = directory where devices will be mounted`	314	`# $1 = directory where devices will be mounted`
315	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`	315	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`
316	`#`	316	`#`
317	`find_live_data_dir()`	317	`find_live_data_dir()`
318	`{`	318	`{`
319	`if [ "$NFSROOT" != "" ]; then`	319	`if [ "$NFSROOT" != "" ]; then`
320	`DIR="/$1/nfs"`	320	`DIR="/$1/nfs"`
321	`mkdir -p $DIR`	321	`mkdir -p $DIR`
322		322
323	`# disable kernel warnings`	323	`# disable kernel warnings`
324	PRINTK=`cat /proc/sys/kernel/printk`	324	PRINTK=`cat /proc/sys/kernel/printk`
325	`echo "0" >/proc/sys/kernel/printk`	325	`echo "0" >/proc/sys/kernel/printk`
326	`# try to mount nfs dir`	326	`# try to mount nfs dir`
327	`mount -t nfs -o nolock,ro,rsize=8192,wsize=8192,hard,intr $NFSROOT $DIR`	327	`mount -t nfs -o nolock,ro,rsize=8192,wsize=8192,hard,intr $NFSROOT $DIR`
328	`# enable kernel warnings`	328	`# enable kernel warnings`
329	`echo "$PRINTK" >/proc/sys/kernel/printk`	329	`echo "$PRINTK" >/proc/sys/kernel/printk`
330		330
331	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	331	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
332	`if [ "$FOUND" != "" ]; then`	332	`if [ "$FOUND" != "" ]; then`
333	`dirname "$FOUND"`	333	`dirname "$FOUND"`
334	`fi`	334	`fi`
335	`else`	335	`else`
336	`list_block_devices \| while read DEVICE; do`	336	`list_block_devices \| while read DEVICE; do`
337	DIR="/$1/`basename $DEVICE`"	337	DIR="/$1/`basename $DEVICE`"
338	`mount_device $DEVICE $DIR`	338	`mount_device $DEVICE $DIR`
339	`if [ $? -ne 0 ]; then continue; fi`	339	`if [ $? -ne 0 ]; then continue; fi`
340	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	340	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
341	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`	341	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`
342	`else dirname "$FOUND"; return 1; fi`	342	`else dirname "$FOUND"; return 1; fi`
343	`done`	343	`done`
344	`fi`	344	`fi`
345	`}`	345	`}`
346		346
347	`# ===========================================================`	347	`# ===========================================================`
348	`# hardware preparation functions`	348	`# hardware preparation functions`
349	`# ===========================================================`	349	`# ===========================================================`
350		350
351	`# Create block devices to /dev described by /sys entries`	351	`# Create block devices to /dev described by /sys entries`
352	`#`	352	`#`
353	`create_block_devices()`	353	`create_block_devices()`
354	`{`	354	`{`
355	`echolog "creating /dev entries for block devices"`	355	`echolog "creating /dev entries for block devices"`
356	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`	356	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`
357	DEVICE="/dev/`basename \`dirname $BLOCK\``"	357	DEVICE="/dev/`basename \`dirname $BLOCK\``"
358	`if [ ! -b $DEVICE ]; then`	358	`if [ ! -b $DEVICE ]; then`
359	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"	359	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"
360	`mknod $DEVICE b $MINORMAJOR`	360	`mknod $DEVICE b $MINORMAJOR`
361	`fi`	361	`fi`
362	`done`	362	`done`
363	`}`	363	`}`
364		364
365	`# modprobe kernel modules needed for the LiveCD`	365	`# modprobe kernel modules needed for the LiveCD`
366	`#`	366	`#`
367	`modprobe_essential_modules()`	367	`modprobe_essential_modules()`
368	`{`	368	`{`
369	`echolog "starting loop device support"`	369	`echolog "starting loop device support"`
370	`modprobe_module loop max_loop=32`	370	`modprobe_module loop max_loop=32`
371	`echolog "starting cdrom support"`	371	`echolog "starting cdrom support"`
372	`modprobe_module ide_cd`	372	`modprobe_module ide_cd`
373	`modprobe_module ide-cd`	373	`modprobe_module ide-cd`
374	`modprobe_module sr_mod`	374	`modprobe_module sr_mod`
375	`modprobe_module cdrom`	375	`modprobe_module cdrom`
376	`echolog "starting cdrom filesystem support"`	376	`echolog "starting cdrom filesystem support"`
377	`modprobe_module isofs`	377	`modprobe_module isofs`
378	`echolog "starting squashfs support"`	378	`echolog "starting squashfs support"`
379	`modprobe_module squashfs`	379	`modprobe_module squashfs`
380	`echolog "starting unionfs/aufs support"`	380	`echolog "starting unionfs/aufs support"`
381	`modprobe_module unionfs`	381	`modprobe_module unionfs`
382	`modprobe_module aufs`	382	`modprobe_module aufs`
383	`echolog "starting vfat support"`	383	`echolog "starting vfat support"`
384	`# modprobe_module nls_cp437`	384	`# modprobe_module nls_cp437`
385	`# modprobe_module nls_iso8859-1`	385	`# modprobe_module nls_iso8859-1`
386	`# modprobe_module nls_iso8859-2`	386	`# modprobe_module nls_iso8859-2`
387	`modprobe_module vfat`	387	`modprobe_module vfat`
388	`echolog "starting ntfs support"`	388	`echolog "starting ntfs support"`
389	`modprobe_module ntfs`	389	`modprobe_module ntfs`
390	`create_block_devices`	390	`create_block_devices`
391	`}`	391	`}`
392		392
393		393
394	`# modprobe kernel modules needed for USB masstorage devices`	394	`# modprobe kernel modules needed for USB masstorage devices`
395	`#`	395	`#`
396	`modprobe_usb_sata_modules()`	396	`modprobe_usb_sata_modules()`
397	`{`	397	`{`
398	`echolog "starting USB and SATA support"`	398	`echolog "starting USB and SATA support"`
399	`modprobe_module ehci-hcd`	399	`modprobe_module ehci-hcd`
400	`modprobe_module ohci-hcd`	400	`modprobe_module ohci-hcd`
401	`modprobe_module uhci-hcd`	401	`modprobe_module uhci-hcd`
402	`modprobe_module scsi_mod`	402	`modprobe_module scsi_mod`
403		403
404	`modprobe_module libata`	404	`modprobe_module libata`
405	`modprobe_module ata_piix`	405	`modprobe_module ata_piix`
406	`modprobe_module ahci`	406	`modprobe_module ahci`
407	`modprobe_module sata_nv`	407	`modprobe_module sata_nv`
408	`modprobe_module sg`	408	`modprobe_module sg`
409		409
410	`modprobe_module sd_mod`	410	`modprobe_module sd_mod`
411	`modprobe_module sr_mod`	411	`modprobe_module sr_mod`
412	`modprobe_module usb-storage`	412	`modprobe_module usb-storage`
413	`echolog "waiting for USB devices, max 9 seconds"`	413	`echolog "waiting for USB devices, max 9 seconds"`
414	`sleep 9`	414	`sleep 9`
415	`create_block_devices`	415	`create_block_devices`
416	`}`	416	`}`
417		417
418	`# modprobe nfs kernel modules`	418	`# modprobe nfs kernel modules`
419	`#`	419	`#`
420	`modprobe_nfs_modules()`	420	`modprobe_nfs_modules()`
421	`{`	421	`{`
422	`echolog "starting nfs support"`	422	`echolog "starting nfs support"`
423	`modprobe_module lockd`	423	`modprobe_module lockd`
424	`modprobe_module fscache`	424	`modprobe_module fscache`
425	`modprobe_module nfs_acl`	425	`modprobe_module nfs_acl`
426	`modprobe_module nfs`	426	`modprobe_module nfs`
427	`}`	427	`}`
428		428
429	`# enable/disable CD autoejecting when unmounted`	429	`# enable/disable CD autoejecting when unmounted`
430	`# $1 = 1\|0 ... enable\|disable`	430	`# $1 = 1\|0 ... enable\|disable`
431	`#`	431	`#`
432	`cd_autoeject()`	432	`cd_autoeject()`
433	`{`	433	`{`
434	`echo $1 >/proc/sys/dev/cdrom/autoeject`	434	`echo $1 >/proc/sys/dev/cdrom/autoeject`
435	`}`	435	`}`
436		436
437	`# Disable DMA if nodma boot parameter is present`	437	`# Disable DMA if nodma boot parameter is present`
438	`#`	438	`#`
439	`setup_dma()`	439	`setup_dma()`
440	`{`	440	`{`
441	if [ ! "`cmdline_parameter nodma`" = "" ]; then	441	if [ ! "`cmdline_parameter nodma`" = "" ]; then
442	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do	442	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do
443	`echolog "setting DMA support off for $DEVICE"`	443	`echolog "setting DMA support off for $DEVICE"`
444	`hdparm -d 0 $DEVICE`	444	`hdparm -d 0 $DEVICE`
445	`done`	445	`done`
446	`fi`	446	`fi`
447	`}`	447	`}`
448		448
449	`# create correct fstab file in $1/etc/fstab and create apropriate`	449	`# create correct fstab file in $1/etc/fstab and create apropriate`
450	`# mount directories in $1`	450	`# mount directories in $1`
451	`# $1 = root directory (union)`	451	`# $1 = root directory (union)`
452	`#`	452	`#`
453	`activate_fstab()`	453	`activate_fstab()`
454	`{`	454	`{`
455	`mkdir -p $1/etc`	455	`mkdir -p $1/etc`
456	`FSTAB="$1/etc/fstab"`	456	`FSTAB="$1/etc/fstab"`
457	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`	457	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`
458	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`	458	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`
459	`echo "proc /proc proc defaults 0 0" >>$FSTAB`	459	`echo "proc /proc proc defaults 0 0" >>$FSTAB`
460		460
461	`# all the rest will be done by runlast or by fstab-sync`	461	`# all the rest will be done by runlast or by fstab-sync`
462	`# search for SWAP done later in /etc/rc.sysinit`	462	`# search for SWAP done later in /etc/rc.sysinit`
463	`}`	463	`}`
464		464
465		465
466	`# ===========================================================`	466	`# ===========================================================`
467	`# functions used for LiveCD on NFS`	467	`# functions used for LiveCD on NFS`
468	`# ===========================================================`	468	`# ===========================================================`
469		469
470	`# load network modules, if NFSROOT is set`	470	`# load network modules, if NFSROOT is set`
471	`# Urs Beyerle, PSI`	471	`# Urs Beyerle, PSI`
472	`#`	472	`#`
473		473
474	`# network devices found ?`	474	`# network devices found ?`
475	`#`	475	`#`
476	`found_nic()`	476	`found_nic()`
477	`{`	477	`{`
478	`found="1"`	478	`found="1"`
-		479	PRINTK=`cat /proc/sys/kernel/printk`
-		480	`echo "0" >/proc/sys/kernel/printk`
479	`for iface in eth0 eth1 eth2 eth3 eth4 eth5; do`	481	`for iface in eth0 eth1 eth2 eth3 eth4 eth5; do`
480	`# nic already found ?`	482	`# nic already found ?`
481	`echo $FOUND_IFACE \| grep -q $iface`	483	`echo $FOUND_IFACE \| grep -q $iface`
482	`if [ $? -ne 0 ]; then`	484	`if [ $? -ne 0 ]; then`
483	`ifconfig $iface > /dev/null 2>&1`	485	`ifconfig $iface > /dev/null 2>&1`
484	`if [ $? -eq 0 ]; then`	486	`if [ $? -eq 0 ]; then`
485	`FOUND_IFACE="$FOUND_IFACE $iface"`	487	`FOUND_IFACE="$FOUND_IFACE $iface"`
486	`found="0"`	488	`found="0"`
487	`fi`	489	`fi`
488	`fi`	490	`fi`
489	`done`	491	`done`
-		492	`echo "$PRINTK" >/proc/sys/kernel/printk`
490	`return $found`	493	`return $found`
491	`}`	494	`}`
492		495
493	`# 1. load network driver defined by kernel parameter nic`	496	`# 1. load network driver defined by kernel parameter nic`
494	`#`	497	`#`
495	`load_network_module_nic()`	498	`load_network_module_nic()`
496	`{`	499	`{`
497	NIC="`cmdline_value nic`"	500	NIC="`cmdline_value nic`"

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