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
# - 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
# - to allow LiveCD mounted over CIFS (for diskless client)
# - add function find_changes
# - add sata_svw
#
 
# ===========================================================
# 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
      # try to mount nfs dir
      mount -t nfs $NFSROOT $DIR -o $NFSOPTS 
   fi
 
   if [ "$CIFSROOT" != "" ]; then
      DIR="/$1/cifs"
      mkdir -p $DIR
      # try to mount cifs dir
      mount -t cifs $CIFSROOT $DIR -o ro,$CIFSOPTS
   fi
 
   if [ "$DIR" = "" ]; then
       list_block_devices | while read DEVICE; do
	   DIR="/$1/`basename $DEVICE`"
	   mount_device $DEVICE $DIR
	   if [ $? -ne 0 ]; then continue; fi
	   # FOUND=`find $DIR -name livecd.sgn -type f | head -n 1`
	   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
   else
       # FOUND=`find $DIR -name livecd.sgn -type f | head -n 1`
       FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null | head -n 1`
       if [ "$FOUND" != "" ]; then 
	   dirname "$FOUND"
       fi
   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
   modprobe_module nls_utf8
   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 sata_svw
   modprobe_module sg
 
   modprobe_module sd_mod
   modprobe_module sr_mod
   modprobe_module usb-storage
   echolog "waiting for USB devices, max 8 seconds"
   sleep 8
   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
}
 
# modprobe cifs kernel module
#
modprobe_cifs_modules()
{
  echolog "starting cifs support"
  modprobe_module cifs
}
 
# 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
}
 
 
# find partition and/or folder that stores the changes
# return false, if changes not set or changes folder/partition not found
# Urs Beyerle
#
find_changes()
{
    echolog "looking for changes in $CHANGESVAL"
 
    CHANGESDEV="`echo "$CHANGESVAL" | egrep -o "^/dev/[^/]+"`"
    CHANGESFOLDER="`echo "$CHANGESVAL" | sed -r 's:^/dev/[^/]+(.*):\1:'`"
    # (re-)define CHANGES if CHANGESFOLDER is set
    if [ "$CHANGESFOLDER" != "" ]; then CHANGES=$MEMORY/$CHANGESFOLDER; fi
 
    # we may need usb and sata support
    modprobe_usb_sata_modules
 
    # device defined?
    if [ "$CHANGESDEV" != "" ]; then
	mount_device $CHANGESDEV $MEMORY
	if [ $? -eq 0 ]; then 
	    echolog "mounted $CHANGESDEV to $MEMORY"
	else
	    echolog "WARNING: device $CHANGESDEV could not be mounted! Continue booting in 10 sec. ..."
	    CHANGESVAL=""
	    sleep 10
	fi
	return
    fi
    
    # if no device is specified, search all devices for folder CHANGESFOLDER
    list_block_devices | while read DEVICE; do
	mount_device $DEVICE $MEMORY
	if [ $? -ne 0 ]; then continue; fi
	FOUND_FOLDER=`ls -1d $MEMORY/$CHANGESFOLDER 2>/dev/null`
	if [ "$FOUND_FOLDER" = "" ]; then 
	    umount $MEMORY 2>/dev/null
	else
	    echolog "found folder $CHANGESFOLDER on $DEVICE"
	    break
	fi
    done
 
    FOUND_FOLDER=`ls -1d $MEMORY/$CHANGESFOLDER 2>/dev/null`
 
    if [ "$FOUND_FOLDER" = "" ]; then 
	echolog "WARNING: changes=$CHANGESVAL not found! Continue booting in 10 sec. ..."
	CHANGESVAL=""
	sleep 10
    fi
 
}
 
 
# ===========================================================
# functions used for LiveCD on NFS 
# ===========================================================
 
# load network modules, if NFSROOT is set
# Urs Beyerle
#
 
# network devices found ?
#
found_nic()
{
    found="1"
    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
    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()
{
    echolog "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
#
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 185	Rev 205
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`	6	`# modified by Urs Beyerle`
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	`# - to allow LiveCD mounted over CIFS (for diskless client)`	22	`# - to allow LiveCD mounted over CIFS (for diskless client)`
23	`# - add function find_changes`	23	`# - add function find_changes`
-		24	`# - add sata_svw`
24	`#`	25	`#`
25		26
26	`# ===========================================================`	27	`# ===========================================================`
27	`# user interface functions`	28	`# user interface functions`
28	`# ===========================================================`	29	`# ===========================================================`
29		30
30	`# echolog`	31	`# echolog`
31	`# $1 = text to show and to write to /var/log/messages`	32	`# $1 = text to show and to write to /var/log/messages`
32	`#`	33	`#`
33	`echolog()`	34	`echolog()`
34	`{`	35	`{`
35	`echo "LIVECD:" "$@" >>/var/log/livedbg`	36	`echo "LIVECD:" "$@" >>/var/log/livedbg`
36	`echo "$@"`	37	`echo "$@"`
37	`}`	38	`}`
38		39
39	`# debug`	40	`# debug`
40	`# commands executed when debug boot parameter is present`	41	`# commands executed when debug boot parameter is present`
41	`#`	42	`#`
42	`debug()`	43	`debug()`
43	`{`	44	`{`
44	`echo`	45	`echo`
45	`echo "====="`	46	`echo "====="`
46	`echo ": Debugging started. Here is the root shell for you."`	47	`echo ": Debugging started. Here is the root shell for you."`
47	`echo ": Type your desired command or hit Ctrl+D to continue booting."`	48	`echo ": Type your desired command or hit Ctrl+D to continue booting."`
48	`echo`	49	`echo`
49	`ash`	50	`ash`
50	`}`	51	`}`
51		52
52	`# header`	53	`# header`
53	`# $1 = text to show`	54	`# $1 = text to show`
54	`#`	55	`#`
55	`header()`	56	`header()`
56	`{`	57	`{`
57	`echolog "[0;1m$1[0;0m"`	58	`echolog "[0;1m$1[0;0m"`
58	`}`	59	`}`
59		60
60	`fatal()`	61	`fatal()`
61	`{`	62	`{`
62	`header "Fatal error occured - $1"`	63	`header "Fatal error occured - $1"`
63	`echolog "Something went wrong and we can't continue booting :("`	64	`echolog "Something went wrong and we can't continue booting :("`
64	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`	65	`echolog "You may explore the system by using simple commands like ls, lsmod, mount, etc."`
65	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`	66	`echolog "You may also try to hit Ctrl+D. Booting will continue. Use at your own risk."`
66	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`	67	`echolog "To be safe, hit Ctrl+Alt+Delete to reboot."`
67	`echolog`	68	`echolog`
68	`ash`	69	`ash`
69	`}`	70	`}`
70		71
71	`# ===========================================================`	72	`# ===========================================================`
72	`# text processing functions`	73	`# text processing functions`
73	`# ===========================================================`	74	`# ===========================================================`
74		75
75	`# egrep_o is a replacement for "egrep -o". It prints only the last`	76	`# egrep_o is a replacement for "egrep -o". It prints only the last`
76	`# matching text`	77	`# matching text`
77	`# $1 = regular expression`	78	`# $1 = regular expression`
78	`#`	79	`#`
79	`egrep_o()`	80	`egrep_o()`
80	`{`	81	`{`
81	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`	82	`cat \| egrep "$1" \| sed -r "s/.($1)./\\1/"`
82	`}`	83	`}`
83		84
84	`# look into cmdline and echo $1 back if $1 is set`	85	`# look into cmdline and echo $1 back if $1 is set`
85	`# $1 = value name, case sensitive, for example livecd_subdir`	86	`# $1 = value name, case sensitive, for example livecd_subdir`
86	`# $2 = file to use instead /proc/cmdline, optional`	87	`# $2 = file to use instead /proc/cmdline, optional`
87	`#`	88	`#`
88	`cmdline_parameter()`	89	`cmdline_parameter()`
89	`{`	90	`{`
90	`CMDLINE=/proc/cmdline`	91	`CMDLINE=/proc/cmdline`
91	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	92	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
92	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`	93	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1(\$\|=\|[[:space:]]+)" \| egrep_o "$1"`
93	`}`	94	`}`
94		95
95	`# look into cmdline and echo value of $1 option`	96	`# look into cmdline and echo value of $1 option`
96	`# $1 = value name, case sensitive, for example livecd_subdir`	97	`# $1 = value name, case sensitive, for example livecd_subdir`
97	`# $2 = file to use instead /proc/cmdline, optional`	98	`# $2 = file to use instead /proc/cmdline, optional`
98	`#`	99	`#`
99	`cmdline_value()`	100	`cmdline_value()`
100	`{`	101	`{`
101	`CMDLINE=/proc/cmdline`	102	`CMDLINE=/proc/cmdline`
102	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`	103	`if [ "$2" != "" ]; then CMDLINE="$2"; fi`
103	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`	104	`cat "$CMDLINE" \| egrep_o "(^\|[[:space:]]+)$1=([^[:space:]]+)" \| egrep_o "=.*" \| cut -b 2- \| tail -n 1`
104	`}`	105	`}`
105		106
106	`# ===========================================================`	107	`# ===========================================================`
107	`# system functions`	108	`# system functions`
108	`# ===========================================================`	109	`# ===========================================================`
109		110
110	`# modprobe module $1, including all dependencies, suppress all messages`	111	`# modprobe module $1, including all dependencies, suppress all messages`
111	`# (own function because modprobe in busybox doesn't work with gzipped modules)`	112	`# (own function because modprobe in busybox doesn't work with gzipped modules)`
112	`# $1 = module name, eg. ehci-hcd`	113	`# $1 = module name, eg. ehci-hcd`
113	`# $2 = optional argument`	114	`# $2 = optional argument`
114	`#`	115	`#`
115	`modprobe_module()`	116	`modprobe_module()`
116	`{`	117	`{`
117	`if [ "$1" = "" ]; then return 1; fi`	118	`if [ "$1" = "" ]; then return 1; fi`
118	PRINTK=`cat /proc/sys/kernel/printk`	119	PRINTK=`cat /proc/sys/kernel/printk`
119	`echo "0" >/proc/sys/kernel/printk`	120	`echo "0" >/proc/sys/kernel/printk`
120		121
121	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod	122	KERNEL="`uname -r`"; LSMOD=/tmp/lsmod
122	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"	123	MODULEDEPS="`cat /lib/modules/$KERNEL/modules.dep \| egrep \"$1\\.ko(\\.gz)?:\"`"
123		124
124	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do	125	for MODULE in `echo $MODULEDEPS \| cut -d ":" -f 2-` `echo $MODULEDEPS \| cut -d ":" -f 1`; do
125	`MODULE=${MODULE%%:}; # remove : at the end, a bug`	126	`MODULE=${MODULE%%:}; # remove : at the end, a bug`
126	TMPMOD="/tmp/`basename $MODULE .gz`";	127	TMPMOD="/tmp/`basename $MODULE .gz`";
127	`# if the module is not loaded already`	128	`# if the module is not loaded already`
128	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then	129	if [ "`cat $LSMOD 2>/dev/null \| egrep \"^$TMPMOD\\\$\"`" = "" ]; then
129	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`	130	`gunzip -c $MODULE 2>/dev/null >$TMPMOD`
130	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`	131	`if [ $? -ne 0 ]; then cp $MODULE $TMPMOD; fi # can't gunzip? copy`
131	`insmod $TMPMOD $2; err=$?`	132	`insmod $TMPMOD $2; err=$?`
132	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`	133	`### insmod $TMPMOD $2 >/dev/null 2>/dev/null; err=$?`
133	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`	134	`if [ "$err" -eq 0 ]; then echo $TMPMOD >>$LSMOD; fi # module log`
134	`rm $TMPMOD`	135	`rm $TMPMOD`
135	`fi`	136	`fi`
136	`done`	137	`done`
137		138
138	`echo "$PRINTK" >/proc/sys/kernel/printk`	139	`echo "$PRINTK" >/proc/sys/kernel/printk`
139	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`	140	`if [ "$err" -ne 0 ]; then echolog "error inserting module $1 ($err)"; fi`
140	`return $err`	141	`return $err`
141	`}`	142	`}`
142		143
143	`# Mount device $1 to $2`	144	`# Mount device $1 to $2`
144	`# $1 = /dev device to mount, eg. /dev/hda1`	145	`# $1 = /dev device to mount, eg. /dev/hda1`
145	`# $2 = mountpoint, eg. /mnt/hda1`	146	`# $2 = mountpoint, eg. /mnt/hda1`
146	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`	147	`# $3 = mount options, for example "loop", "ro", or "remount,rw"`
147	`#`	148	`#`
148	`mount_device()`	149	`mount_device()`
149	`{`	150	`{`
150	`mkdir -p $2`	151	`mkdir -p $2`
151	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`	152	`if [ "$3" != "" ]; then OPTIONS="-o $3"; else OPTIONS=""; fi`
152		153
153	PRINTK=`cat /proc/sys/kernel/printk`	154	PRINTK=`cat /proc/sys/kernel/printk`
154	`echo "0" >/proc/sys/kernel/printk`	155	`echo "0" >/proc/sys/kernel/printk`
155		156
156	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`	157	`mount -t auto $1 $2 $OPTIONS >/dev/null 2>/dev/null`
157	`err=$?`	158	`err=$?`
158		159
159	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`	160	`if [ "$err" -ne 0 ]; then rmdir $2 2>/dev/null; fi`
160	`echo "$PRINTK" >/proc/sys/kernel/printk`	161	`echo "$PRINTK" >/proc/sys/kernel/printk`
161	`return $err`	162	`return $err`
162	`}`	163	`}`
163		164
164	`# ===========================================================`	165	`# ===========================================================`
165	`# live module functions`	166	`# live module functions`
166	`# ===========================================================`	167	`# ===========================================================`
167		168
168	`# Create module`	169	`# Create module`
169	`# call mksquashfs with apropriate arguments`	170	`# call mksquashfs with apropriate arguments`
170	`# $1 = directory which will be compressed to squashfs module`	171	`# $1 = directory which will be compressed to squashfs module`
171	`# $2 = output .mo file`	172	`# $2 = output .mo file`
172	`# $3 = optional -keep-as-directory argument`	173	`# $3 = optional -keep-as-directory argument`
173	`#`	174	`#`
174	`create_module()`	175	`create_module()`
175	`{`	176	`{`
176	`mksquashfs $1 $2 $3 >/dev/null`	177	`mksquashfs $1 $2 $3 >/dev/null`
177	`if [ $? -ne 0 ]; then return 1; fi`	178	`if [ $? -ne 0 ]; then return 1; fi`
178	`chmod oga-x $2 # remove execute attrib`	179	`chmod oga-x $2 # remove execute attrib`
179	`}`	180	`}`
180		181
181	`# Mount .mo module to destination directory`	182	`# Mount .mo module to destination directory`
182	`# $1 = path to .mo livecd compressed module`	183	`# $1 = path to .mo livecd compressed module`
183	`# $2 = destination folder`	184	`# $2 = destination folder`
184	`#`	185	`#`
185	`mount_module()`	186	`mount_module()`
186	`{`	187	`{`
187	`mount -t squashfs -o loop,ro $1 $2`	188	`mount -t squashfs -o loop,ro $1 $2`
188	`}`	189	`}`
189		190
190	`# Insert a directory tree $2 to an union specified by $1`	191	`# Insert a directory tree $2 to an union specified by $1`
191	`# Top-level read-write branch is specified by it's index 0`	192	`# Top-level read-write branch is specified by it's index 0`
192	`# $1 = union absolute path (starting with /)`	193	`# $1 = union absolute path (starting with /)`
193	`# $2 = path to data directory`	194	`# $2 = path to data directory`
194	`#`	195	`#`
195	`union_insert_dir()`	196	`union_insert_dir()`
196	`{`	197	`{`
197	`which unionctl >/dev/null 2>&1`	198	`which unionctl >/dev/null 2>&1`
198	`if [ $? -eq 0 ]; then`	199	`if [ $? -eq 0 ]; then`
199	`# unionfs 1.x or aufs`	200	`# unionfs 1.x or aufs`
200	`unionctl "$1" --add --after 0 --mode ro "$2"`	201	`unionctl "$1" --add --after 0 --mode ro "$2"`
201	`else`	202	`else`
202	`# unionfs 2.x`	203	`# unionfs 2.x`
203	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`	204	`mount -t unionfs -o remount,add=:${2}=ro none "$1"`
204	`fi`	205	`fi`
205	`}`	206	`}`
206		207
207	`# List all modules in all directories (base, modules, optional)`	208	`# List all modules in all directories (base, modules, optional)`
208	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`	209	`# and filter out unneeded optional modules (not specified by load= kernel parameter)`
209	`# $1 = root directory of mounted DATAdir`	210	`# $1 = root directory of mounted DATAdir`
210	`#`	211	`#`
211	`list_modules()`	212	`list_modules()`
212	`{`	213	`{`
213	LOAD="`cmdline_value load`"	214	LOAD="`cmdline_value load`"
214	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`	215	`ls -A1d $1/.mo $1//*.mo 2>/dev/null \| while read LINE; do`
215	MODNAME="`basename $LINE .mo`"	216	MODNAME="`basename $LINE .mo`"
216	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue	217	if [ "$LOAD" != "*" -a "`echo $LINE \| grep optional`" != "" -a "`echo $LOAD \| egrep \"(^\|,)$MODNAME(\\\$\|,)\"`" = "" ]; then continue
217	`else echo $LINE; fi`	218	`else echo $LINE; fi`
218	`done`	219	`done`
219	`}`	220	`}`
220		221
221	`# Insert one single .mo module to the union`	222	`# Insert one single .mo module to the union`
222	`# $1 = union absolute path (starting with /)`	223	`# $1 = union absolute path (starting with /)`
223	`# $2 = module.mo full path`	224	`# $2 = module.mo full path`
224	`# $3 = destination folder, where images will be mounted to`	225	`# $3 = destination folder, where images will be mounted to`
225	`#`	226	`#`
226	`union_insert_module()`	227	`union_insert_module()`
227	`{`	228	`{`
228	TARGET="$3/`basename $2`"	229	TARGET="$3/`basename $2`"
229	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`	230	`while [ -e $TARGET ]; do TARGET=$TARGET.X; done`
230	`mkdir -p $TARGET`	231	`mkdir -p $TARGET`
231	`mount_module $2 $TARGET`	232	`mount_module $2 $TARGET`
232	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`	233	`if [ $? -ne 0 ]; then echo "can't read module data"; return 1; fi`
233	`union_insert_dir $1 $TARGET;`	234	`union_insert_dir $1 $TARGET;`
234	`}`	235	`}`
235		236
236	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`	237	`# Insert all .mo modules, in $2 directory and subdirectories, to the union`
237	`# $1 = union absolute path (starting with /)`	238	`# $1 = union absolute path (starting with /)`
238	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`	239	`# $2 = LiveCD data dir (with directories /base, /modules, etc.)`
239	`# $3 = destination folder, where images will be mounted to`	240	`# $3 = destination folder, where images will be mounted to`
240	`#`	241	`#`
241	`union_insert_modules()`	242	`union_insert_modules()`
242	`{`	243	`{`
243	PRINTK=`cat /proc/sys/kernel/printk`	244	PRINTK=`cat /proc/sys/kernel/printk`
244	`echo "0" >/proc/sys/kernel/printk`	245	`echo "0" >/proc/sys/kernel/printk`
245		246
246	`list_modules $2 \| while read MODULE; do`	247	`list_modules $2 \| while read MODULE; do`
247	echo " -> `basename $MODULE`"	248	echo " -> `basename $MODULE`"
248	`union_insert_module $1 $MODULE $3`	249	`union_insert_module $1 $MODULE $3`
249	`done`	250	`done`
250		251
251	`echo "$PRINTK" >/proc/sys/kernel/printk`	252	`echo "$PRINTK" >/proc/sys/kernel/printk`
252	`}`	253	`}`
253		254
254	`# Copy modules to RAM directory`	255	`# Copy modules to RAM directory`
255	`# $1 = data directory`	256	`# $1 = data directory`
256	`# $2 = target directory in RAM`	257	`# $2 = target directory in RAM`
257	`#`	258	`#`
258	`copy_to_ram()`	259	`copy_to_ram()`
259	`{`	260	`{`
260	`cp -R $1/* $2`	261	`cp -R $1/* $2`
261	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`	262	`if [ $? -ne 0 ]; then fatal "can't copy to RAM, not enough memory?"; fi`
262	`}`	263	`}`
263		264
264	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`	265	`# Copy content of "rootcopy" directory on the CD to $2 (union, usually)`
265	`# $1 = source`	266	`# $1 = source`
266	`# $2 = destination`	267	`# $2 = destination`
267	`#`	268	`#`
268	`copy_rootchanges()`	269	`copy_rootchanges()`
269	`{`	270	`{`
270	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`	271	`cp -a $1/rootcopy/* $2 2>/dev/null # could be empty`
271	`}`	272	`}`
272		273
273	`# ===========================================================`	274	`# ===========================================================`
274	`# discovery functions`	275	`# discovery functions`
275	`# ===========================================================`	276	`# ===========================================================`
276		277
277	`# List all CD-ROMs`	278	`# List all CD-ROMs`
278	`# by using /proc entries`	279	`# by using /proc entries`
279	`#`	280	`#`
280	`list_cdrom_devices()`	281	`list_cdrom_devices()`
281	`{`	282	`{`
282	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi	283	if [ "`cmdline_parameter nocd`" != "" ]; then return 1; fi
283	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do	284	for CDDEVICE in `cat /proc/sys/dev/cdrom/info \| head -n 3 \| tail -n 1 \| cut -d ":" -f 2`; do
284	`echo "/dev/$CDDEVICE"`	285	`echo "/dev/$CDDEVICE"`
285	`done`	286	`done`
286	`}`	287	`}`
287		288
288	`# List all partition devices`	289	`# List all partition devices`
289	`# take list of all partitions and output unique disks.`	290	`# take list of all partitions and output unique disks.`
290	`# Return empty result when nohd parameter was given.`	291	`# Return empty result when nohd parameter was given.`
291	`#`	292	`#`
292	`list_partition_devices()`	293	`list_partition_devices()`
293	`{`	294	`{`
294	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi	295	if [ "`cmdline_parameter nohd`" != "" ]; then return 1; fi
295	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`	296	`cat /proc/partitions \| grep -v loop \| sed -r "s/^[0-9[:space:]]+/\/dev\//" \| grep /dev/`
296	`}`	297	`}`
297		298
298	`# List all disk devices`	299	`# List all disk devices`
299	`#`	300	`#`
300	`list_disk_devices()`	301	`list_disk_devices()`
301	`{`	302	`{`
302	`list_partition_devices \| egrep -v "[0-9]"`	303	`list_partition_devices \| egrep -v "[0-9]"`
303	`}`	304	`}`
304		305
305	`# List all block devices`	306	`# List all block devices`
306	`#`	307	`#`
307	`list_block_devices()`	308	`list_block_devices()`
308	`{`	309	`{`
309	`list_cdrom_devices`	310	`list_cdrom_devices`
310	`list_partition_devices`	311	`list_partition_devices`
311	`}`	312	`}`
312		313
313	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`	314	`# Try to mount all disks, partitions and cdroms and Find where the LiveCD is.`
314	`# If LiveCD found in the device, echo dirname of it's directory,`	315	`# If LiveCD found in the device, echo dirname of it's directory,`
315	`# and leave the device mounted. Mounting is not ro, but without any argument.`	316	`# and leave the device mounted. Mounting is not ro, but without any argument.`
316	`# $1 = directory where devices will be mounted`	317	`# $1 = directory where devices will be mounted`
317	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`	318	`# added: mount $NFSROOT to /$1/nfs if NFSROOT is set. and search there for LiveCD`
318	`#`	319	`#`
319	`find_live_data_dir()`	320	`find_live_data_dir()`
320	`{`	321	`{`
321	`if [ "$NFSROOT" != "" ]; then`	322	`if [ "$NFSROOT" != "" ]; then`
322	`DIR="/$1/nfs"`	323	`DIR="/$1/nfs"`
323	`mkdir -p $DIR`	324	`mkdir -p $DIR`
324	`# try to mount nfs dir`	325	`# try to mount nfs dir`
325	`mount -t nfs $NFSROOT $DIR -o $NFSOPTS`	326	`mount -t nfs $NFSROOT $DIR -o $NFSOPTS`
326	`fi`	327	`fi`
327		328
328	`if [ "$CIFSROOT" != "" ]; then`	329	`if [ "$CIFSROOT" != "" ]; then`
329	`DIR="/$1/cifs"`	330	`DIR="/$1/cifs"`
330	`mkdir -p $DIR`	331	`mkdir -p $DIR`
331	`# try to mount cifs dir`	332	`# try to mount cifs dir`
332	`mount -t cifs $CIFSROOT $DIR -o ro,$CIFSOPTS`	333	`mount -t cifs $CIFSROOT $DIR -o ro,$CIFSOPTS`
333	`fi`	334	`fi`
334		335
335	`if [ "$DIR" = "" ]; then`	336	`if [ "$DIR" = "" ]; then`
336	`list_block_devices \| while read DEVICE; do`	337	`list_block_devices \| while read DEVICE; do`
337	DIR="/$1/`basename $DEVICE`"	338	DIR="/$1/`basename $DEVICE`"
338	`mount_device $DEVICE $DIR`	339	`mount_device $DEVICE $DIR`
339	`if [ $? -ne 0 ]; then continue; fi`	340	`if [ $? -ne 0 ]; then continue; fi`
340	# FOUND=`find $DIR -name livecd.sgn -type f \| head -n 1`	341	# FOUND=`find $DIR -name livecd.sgn -type f \| head -n 1`
341	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	342	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
342	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`	343	`if [ "$FOUND" = "" ]; then umount $DIR 2>/dev/null; rmdir $DIR 2>/dev/null`
343	`else dirname "$FOUND"; return 1; fi`	344	`else dirname "$FOUND"; return 1; fi`
344	`done`	345	`done`
345	`else`	346	`else`
346	# FOUND=`find $DIR -name livecd.sgn -type f \| head -n 1`	347	# FOUND=`find $DIR -name livecd.sgn -type f \| head -n 1`
347	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`	348	FOUND=`ls -A1d $DIR/livecd.sgn $DIR/*/livecd.sgn 2>/dev/null \| head -n 1`
348	`if [ "$FOUND" != "" ]; then`	349	`if [ "$FOUND" != "" ]; then`
349	`dirname "$FOUND"`	350	`dirname "$FOUND"`
350	`fi`	351	`fi`
351	`fi`	352	`fi`
352	`}`	353	`}`
353		354
354	`# ===========================================================`	355	`# ===========================================================`
355	`# hardware preparation functions`	356	`# hardware preparation functions`
356	`# ===========================================================`	357	`# ===========================================================`
357		358
358	`# Create block devices to /dev described by /sys entries`	359	`# Create block devices to /dev described by /sys entries`
359	`#`	360	`#`
360	`create_block_devices()`	361	`create_block_devices()`
361	`{`	362	`{`
362	`echolog "creating /dev entries for block devices"`	363	`echolog "creating /dev entries for block devices"`
363	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`	364	`ls -A1d /sys/block//dev /sys/block//*/dev 2>/dev/null \| grep -v loop \| while read BLOCK; do`
364	DEVICE="/dev/`basename \`dirname $BLOCK\``"	365	DEVICE="/dev/`basename \`dirname $BLOCK\``"
365	`if [ ! -b $DEVICE ]; then`	366	`if [ ! -b $DEVICE ]; then`
366	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"	367	MINORMAJOR="`head -n 1 $BLOCK \| tr ':' ' '`"
367	`mknod $DEVICE b $MINORMAJOR`	368	`mknod $DEVICE b $MINORMAJOR`
368	`fi`	369	`fi`
369	`done`	370	`done`
370	`}`	371	`}`
371		372
372	`# modprobe kernel modules needed for the LiveCD`	373	`# modprobe kernel modules needed for the LiveCD`
373	`#`	374	`#`
374	`modprobe_essential_modules()`	375	`modprobe_essential_modules()`
375	`{`	376	`{`
376	`echolog "starting loop device support"`	377	`echolog "starting loop device support"`
377	`modprobe_module loop max_loop=32`	378	`modprobe_module loop max_loop=32`
378	`echolog "starting cdrom support"`	379	`echolog "starting cdrom support"`
379	`modprobe_module ide_cd`	380	`modprobe_module ide_cd`
380	`modprobe_module ide-cd`	381	`modprobe_module ide-cd`
381	`modprobe_module sr_mod`	382	`modprobe_module sr_mod`
382	`modprobe_module cdrom`	383	`modprobe_module cdrom`
383	`echolog "starting cdrom filesystem support"`	384	`echolog "starting cdrom filesystem support"`
384	`modprobe_module isofs`	385	`modprobe_module isofs`
385	`echolog "starting squashfs support"`	386	`echolog "starting squashfs support"`
386	`modprobe_module squashfs`	387	`modprobe_module squashfs`
387	`echolog "starting unionfs/aufs support"`	388	`echolog "starting unionfs/aufs support"`
388	`modprobe_module unionfs`	389	`modprobe_module unionfs`
389	`modprobe_module aufs`	390	`modprobe_module aufs`
390	`echolog "starting vfat support"`	391	`echolog "starting vfat support"`
391	`# modprobe_module nls_cp437`	392	`# modprobe_module nls_cp437`
392	`# modprobe_module nls_iso8859-1`	393	`# modprobe_module nls_iso8859-1`
393	`# modprobe_module nls_iso8859-2`	394	`# modprobe_module nls_iso8859-2`
394	`modprobe_module vfat`	395	`modprobe_module vfat`
395	`echolog "starting ntfs support"`	396	`echolog "starting ntfs support"`
396	`modprobe_module ntfs`	397	`modprobe_module ntfs`
397	`modprobe_module nls_utf8`	398	`modprobe_module nls_utf8`
398	`create_block_devices`	399	`create_block_devices`
399	`}`	400	`}`
400		401
401		402
402	`# modprobe kernel modules needed for USB masstorage devices`	403	`# modprobe kernel modules needed for USB masstorage devices`
403	`#`	404	`#`
404	`modprobe_usb_sata_modules()`	405	`modprobe_usb_sata_modules()`
405	`{`	406	`{`
406	`echolog "starting USB and SATA support"`	407	`echolog "starting USB and SATA support"`
407	`modprobe_module ehci-hcd`	408	`modprobe_module ehci-hcd`
408	`modprobe_module ohci-hcd`	409	`modprobe_module ohci-hcd`
409	`modprobe_module uhci-hcd`	410	`modprobe_module uhci-hcd`
410	`modprobe_module scsi_mod`	411	`modprobe_module scsi_mod`
411		412
412	`modprobe_module libata`	413	`modprobe_module libata`
413	`modprobe_module ata_piix`	414	`modprobe_module ata_piix`
414	`modprobe_module ahci`	415	`modprobe_module ahci`
415	`modprobe_module sata_nv`	416	`modprobe_module sata_nv`
-		417	`modprobe_module sata_svw`
416	`modprobe_module sg`	418	`modprobe_module sg`
417		419
418	`modprobe_module sd_mod`	420	`modprobe_module sd_mod`
419	`modprobe_module sr_mod`	421	`modprobe_module sr_mod`
420	`modprobe_module usb-storage`	422	`modprobe_module usb-storage`
421	`echolog "waiting for USB devices, max 8 seconds"`	423	`echolog "waiting for USB devices, max 8 seconds"`
422	`sleep 8`	424	`sleep 8`
423	`create_block_devices`	425	`create_block_devices`
424	`}`	426	`}`
425		427
426	`# modprobe nfs kernel modules`	428	`# modprobe nfs kernel modules`
427	`#`	429	`#`
428	`modprobe_nfs_modules()`	430	`modprobe_nfs_modules()`
429	`{`	431	`{`
430	`echolog "starting nfs support"`	432	`echolog "starting nfs support"`
431	`modprobe_module lockd`	433	`modprobe_module lockd`
432	`modprobe_module fscache`	434	`modprobe_module fscache`
433	`modprobe_module nfs_acl`	435	`modprobe_module nfs_acl`
434	`modprobe_module nfs`	436	`modprobe_module nfs`
435	`}`	437	`}`
436		438
437	`# modprobe cifs kernel module`	439	`# modprobe cifs kernel module`
438	`#`	440	`#`
439	`modprobe_cifs_modules()`	441	`modprobe_cifs_modules()`
440	`{`	442	`{`
441	`echolog "starting cifs support"`	443	`echolog "starting cifs support"`
442	`modprobe_module cifs`	444	`modprobe_module cifs`
443	`}`	445	`}`
444		446
445	`# enable/disable CD autoejecting when unmounted`	447	`# enable/disable CD autoejecting when unmounted`
446	`# $1 = 1\|0 ... enable\|disable`	448	`# $1 = 1\|0 ... enable\|disable`
447	`#`	449	`#`
448	`cd_autoeject()`	450	`cd_autoeject()`
449	`{`	451	`{`
450	`echo $1 >/proc/sys/dev/cdrom/autoeject`	452	`echo $1 >/proc/sys/dev/cdrom/autoeject`
451	`}`	453	`}`
452		454
453	`# Disable DMA if nodma boot parameter is present`	455	`# Disable DMA if nodma boot parameter is present`
454	`#`	456	`#`
455	`setup_dma()`	457	`setup_dma()`
456	`{`	458	`{`
457	if [ ! "`cmdline_parameter nodma`" = "" ]; then	459	if [ ! "`cmdline_parameter nodma`" = "" ]; then
458	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do	460	for DEVICE in `list_cdrom_devices` `list_disk_devices`; do
459	`echolog "setting DMA support off for $DEVICE"`	461	`echolog "setting DMA support off for $DEVICE"`
460	`hdparm -d 0 $DEVICE`	462	`hdparm -d 0 $DEVICE`
461	`done`	463	`done`
462	`fi`	464	`fi`
463	`}`	465	`}`
464		466
465	`# create correct fstab file in $1/etc/fstab and create apropriate`	467	`# create correct fstab file in $1/etc/fstab and create apropriate`
466	`# mount directories in $1`	468	`# mount directories in $1`
467	`# $1 = root directory (union)`	469	`# $1 = root directory (union)`
468	`#`	470	`#`
469	`activate_fstab()`	471	`activate_fstab()`
470	`{`	472	`{`
471	`mkdir -p $1/etc`	473	`mkdir -p $1/etc`
472	`FSTAB="$1/etc/fstab"`	474	`FSTAB="$1/etc/fstab"`
473	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`	475	`echo "tmpfs / tmpfs defaults 0 0" >$FSTAB`
474	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`	476	`echo "devpts /dev/pts devpts gid=5,mode=620 0 0" >>$FSTAB`
475	`echo "proc /proc proc defaults 0 0" >>$FSTAB`	477	`echo "proc /proc proc defaults 0 0" >>$FSTAB`
476		478
477	`# all the rest will be done by runlast or by fstab-sync`	479	`# all the rest will be done by runlast or by fstab-sync`
478	`# search for SWAP done later in /etc/rc.sysinit`	480	`# search for SWAP done later in /etc/rc.sysinit`
479	`}`	481	`}`
480		482
481		483
482	`# find partition and/or folder that stores the changes`	484	`# find partition and/or folder that stores the changes`
483	`# return false, if changes not set or changes folder/partition not found`	485	`# return false, if changes not set or changes folder/partition not found`
484	`# Urs Beyerle`	486	`# Urs Beyerle`
485	`#`	487	`#`
486	`find_changes()`	488	`find_changes()`
487	`{`	489	`{`
488	`echolog "looking for changes in $CHANGESVAL"`	490	`echolog "looking for changes in $CHANGESVAL"`
489		491
490	CHANGESDEV="`echo "$CHANGESVAL" \| egrep -o "^/dev/[^/]+"`"	492	CHANGESDEV="`echo "$CHANGESVAL" \| egrep -o "^/dev/[^/]+"`"
491	CHANGESFOLDER="`echo "$CHANGESVAL" \| sed -r 's:^/dev/[^/]+(.*):\1:'`"	493	CHANGESFOLDER="`echo "$CHANGESVAL" \| sed -r 's:^/dev/[^/]+(.*):\1:'`"
492	`# (re-)define CHANGES if CHANGESFOLDER is set`	494	`# (re-)define CHANGES if CHANGESFOLDER is set`
493	`if [ "$CHANGESFOLDER" != "" ]; then CHANGES=$MEMORY/$CHANGESFOLDER; fi`	495	`if [ "$CHANGESFOLDER" != "" ]; then CHANGES=$MEMORY/$CHANGESFOLDER; fi`
494		496
495	`# we may need usb and sata support`	497	`# we may need usb and sata support`
496	`modprobe_usb_sata_modules`	498	`modprobe_usb_sata_modules`
497		499
498	`# device defined?`	500	`# device defined?`

Subversion Repositories livecd

(root)/trunk/linux-live.sl/initrd/liblinuxlive @ 218 – Rev 185 → 205