slitaz-modular rev 175
initramfs: Add new linux-live scripts support.
| author | Christopher Rogers <slaxemulator@gmail.com> |
|---|---|
| date | Wed Mar 13 17:07:55 2013 +0000 (2013-03-13) |
| parents | 0b68eab7409c |
| children | 06775c59c666 |
| files | initramfs/init initramfs/lib/.config initramfs/lib/livekitlib |
line diff
1.1 --- a/initramfs/init Thu Jul 19 12:14:30 2012 +0000 1.2 +++ b/initramfs/init Wed Mar 13 17:07:55 2013 +0000 1.3 @@ -1,216 +1,76 @@ 1.4 #!/bin/sh 1.5 +# Initial script for Linux Live Kit 1.6 +# Author: Tomas M <http://www.linux-live.org/> 1.7 1.8 -success() 1.9 -{ 1.10 - cat > /run/init 1.11 - [ -d /proc/sys ] && umount /proc 1.12 - echo -e "\\033[70G[ \\033[1;32mOK\\033[0;39m ]" 1.13 - exit 1.14 -} 1.15 +export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin 1.16 1.17 -launch_init() 1.18 -{ 1.19 - mount --move /run /mnt/run 1.20 - success <<EOT 1.21 -exec /sbin/switch_root mnt /sbin/init 1.22 -EOT 1.23 -} 1.24 +source /lib/.config 1.25 +source /lib/livekitlib 1.26 1.27 -failed() 1.28 -{ 1.29 - [ -d /proc/sys ] && umount /proc 1.30 - echo -e "\\033[70G[ \\033[1;31mFailed\\033[0;39m ]" 1.31 -} 1.32 +transfer_initramfs 1.33 1.34 -launch_init_modular() 1.35 -{ 1.36 - echo -e "\\033[70G[ \\033[1;32mOK\\033[0;39m ]" 1.37 - [ -d /mnt/initramfs ] || mkdir -p /mnt/initramfs 1.38 - SYS_DIR="dev bin etc boot lib sbin home root run usr var" 1.39 - for dir in $SYS_DIR; do 1.40 - cp -a /$dir /mnt/initramfs 1.41 - done 1.42 - MK_DIR="sys proc tmp media mnt" 1.43 - for dir1 in $MK_DIR; do 1.44 - mkdir -p /mnt/initramfs/$dir1 1.45 - done 1.46 - mount --move /dev /mnt/dev 1.47 - [ -f /mnt/dev/sdc ] || mknod /mnt/dev/sdc b 8 32 1.48 - [ -f /mnt/dev/sdc1 ] || mknod /mnt/dev/sdc1 b 8 33 1.49 - mount --move /run /mnt/run 1.50 - mkdir -p /mnt/dev/pts 1.51 - mount --move /dev/pts /mnt/dev/pts 1.52 - mkdir -p /mnt/dev/shm 1.53 - mount --move /dev/shm /mnt/dev/shm 1.54 - success <<EOT 1.55 -exec /sbin/switch_root mnt /linuxrc 1.56 -EOT 1.57 -} 1.58 +MEMORY=/memory 1.59 +CHANGES=$MEMORY/changes 1.60 +UNION=$MEMORY/union 1.61 +DATAMNT=$MEMORY/data 1.62 +BUNDLES=$MEMORY/bundles 1.63 1.64 -try_init() 1.65 -{ 1.66 - if [ ! -d /mnt/etc ] && grep -q cryptoroot= /proc/cmdline; then 1.67 - modprobe dm-mod 1.68 - modprobe dm-crypt 1.69 - modprobe aes-i586 1.70 - root="$(sed 's/.*cryptoroot=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.71 - dev=${root#/dev/} 1.72 - dmlabel=crypto-$dev 1.73 - if cryptsetup isLuks $root 2> /dev/null; then 1.74 - cryptsetup luksOpen $root $dmlabel 1.75 - else 1.76 - read -s -t 60 -p "Pass phrase : " passphrase 1.77 - key=$(echo $passphrase | hashalot -x -n 32 sha512) 1.78 - blocks=$(cat $(find /sys/block | grep /$dev/size)) 1.79 - echo 0 $blocks crypt aes-plain $key 0 $root 0 | \ 1.80 - dmsetup create $dmlabel 1.81 - fi 1.82 - mount /dev/mapper/$dmlabel /mnt 1.83 - fi 1.84 - grep -q subroot= /proc/cmdline && return 1.85 - grep -q loopfs= /proc/cmdline && return 1.86 - if [ -d /mnt/etc ]; then 1.87 - umount /sys 1.88 - [ -n "$1" ] && for i in $@ ; do 1.89 - cp -a $i /mnt$(dirname $i) 1.90 - done 1.91 - mount /mnt -o remount,ro 1.92 - launch_init 1.93 - fi 1.94 - failed 1.95 -} 1.96 +header "Live Kit init <http://www.linux-live.org/>" 1.97 1.98 -mount_mapper() 1.99 -{ 1.100 - mount $root /mnt 1.101 - try_init /dev/mapper $@ 1.102 -} 1.103 +init_proc_sysfs 1.104 1.105 -lvmsetup() 1.106 -{ 1.107 - grep -q lvmroot= /proc/cmdline || return 1 1.108 - modprobe dm-mod 1.109 - vgscan --ignorelockingfailure 1.110 - vgchange -ay --ignorelockingfailure 1.111 - root="/dev/mapper/$(sed 's/.*lvmroot=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.112 - return 0 1.113 -} 1.114 +debug_start 1.115 +debug_shell 1.116 1.117 -load_raid() 1.118 -{ 1.119 -while read line; do 1.120 - case "$line" in 1.121 - *raid10*) modprobe raid10 ;; 1.122 - *raid0*) modprobe raid0 ;; 1.123 - *raid1*) modprobe raid1 ;; 1.124 - *raid[456]*) modprobe raid456 ;; 1.125 - *mirror*) modprobe dm-mirror ;; 1.126 - esac 1.127 -done 1.128 -} 1.129 +init_devs 1.130 +init_aufs 1.131 +init_zram 1.132 1.133 -if [ "$1" != "logged" ]; then 1.134 - mount -t devpts devpts /dev/pts 1.135 - mount -t tmpfs tmpfs /dev/shm 1.136 - mount -t tmpfs tmpfs /run 1.137 - script -qc '/init logged' /run/boot.log 1.138 - . /run/init 1.139 -else 1.140 -mount -t proc proc /proc 1.141 -mount -t sysfs sysfs /sys 1.142 -if grep -q dmraid= /proc/cmdline; then 1.143 - root="$(sed 's/.*dmraid=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.144 - echo -n "Switching / to dmraid $root..." 1.145 - dmraid -s | grep ^type | awk '{ print $3 }' | load_raid 1.146 - case "$root" in 1.147 - /dev/*);; 1.148 - *) root=/dev/mapper/$(dmraid -s|grep ^name|awk '{print $3}')p${root#p};; 1.149 - esac 1.150 - dmraid -ay 1.151 - lvmsetup 1.152 - mount_mapper 1.153 +# find data dir with filesystem bundles 1.154 +DATA="$(find_data 60 "$DATAMNT")" 1.155 +debug_shell 1.156 + 1.157 +# setup persistent changes, if possible 1.158 +persistent_changes "$DATA" "$CHANGES" 1.159 +debug_shell 1.160 + 1.161 +# copy to RAM if needed 1.162 +DATA="$(copy_to_ram "$DATA" "$CHANGES")" 1.163 +debug_shell 1.164 + 1.165 +# init aufs union 1.166 +init_union "$CHANGES" "$UNION" 1.167 +debug_shell 1.168 + 1.169 +echo "Copying initramfs to /initramfs" 1.170 +copy_initramfs /initramfs 1.171 + 1.172 +# setup initramfs if it exist 1.173 +if [ -d /initramfs ]; then 1.174 + echo "Setup initramfs for first module..." 1.175 + mount -n -o remount,add:1:/initramfs=ro aufs $UNION 1.176 fi 1.177 -if grep -q softraid= /proc/cmdline; then 1.178 - root="$(sed 's/.*softraid=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.179 - echo -n "Switching / to softraid $root..." 1.180 - mdadm --examine --scan --config=partitions > /etc/mdadm.conf 1.181 - grep -qs " $root " /etc/mdadm.conf || 1.182 - root=$(awk '/dev.md/ { print $2; exit }' < /etc/mdadm.conf) 1.183 - grep level=raid /etc/mdadm.conf | load_raid 1.184 - for i in 1 2 3 4 5 6 7 8 9; do 1.185 - sleep $i 1.186 - mdadm --assemble --scan 1.187 - grep -qs ': active' /proc/mdstat && break 1.188 - done 1.189 - lvmsetup 1.190 - mount_mapper /etc/mdadm.conf 1.191 +debug_shell 1.192 + 1.193 +# add data to union 1.194 +union_append_bundles "$DATA" "$BUNDLES" "$UNION" 1.195 +debug_shell 1.196 + 1.197 +# rootcopy 1.198 +copy_rootcopy_content "$DATA" "$UNION" 1.199 + 1.200 +# create empty fstab 1.201 +fstab_create "$UNION" 1.202 +debug_shell 1.203 + 1.204 +if [ -d $DATAMNT/mirror ]; then 1.205 + echolog "Setup repo for mirror iso..." 1.206 + mount -n -o remount,add:1:/$DATAMNT/mirror=ro aufs $UNION 1.207 fi 1.208 -if lvmsetup; then 1.209 - echo -n "Switching / to lvm $root..." 1.210 - mount_mapper 1.211 -fi 1.212 -if grep -q mount= /proc/cmdline; then 1.213 - root="$(sed 's/.*mount=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.214 - dev=$(blkid | grep $root | sed 's/:.*//;q') 1.215 - echo "Mounting $dev ($root) ..." 1.216 - if ! mount $dev /mnt; then 1.217 - if echo $dev | grep -q "/dev/sd"; then 1.218 - delay=`cat /sys/module/usb_storage/parameters/delay_use` 1.219 - delay=$((1+$delay)) 1.220 - echo -n "sleep for $delay seconds..." 1.221 - sleep $delay 1.222 - fi 1.223 - mount $dev /mnt 1.224 - fi 1.225 - grep -q posixovl /proc/cmdline && mount.posixovl /mnt 1.226 -fi 1.227 -if grep -q loopfs= /proc/cmdline; then 1.228 - loopfs="$(sed 's/.*loopfs=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.229 - echo -n "Into loop file $loopfs..." 1.230 - losetup /dev/loop0 /mnt/$loopfs 1.231 - mount /dev/loop0 /mnt 2> /dev/null 1.232 -fi 1.233 -if grep -q bindfs= /proc/cmdline; then 1.234 - bind="$(sed 's/.*bindfs=\([^ ]*\).*/\1/' < /proc/cmdline)" 1.235 - echo "Binding ${bind/,/ to } ..." 1.236 - mount --bind /mnt/${bind%,*} /mnt/${bind%,*}/${bind#*,} 1.237 -fi 1.238 -grep -q cryptoroot= /proc/cmdline && try_init 1.239 -umount /sys 1.240 -if grep -q subroot= /proc/cmdline; then 1.241 - subroot="/$(sed 's/.*subroot=\([^ ]*\).*/\1/' < /proc/cmdline)" && 1.242 - echo -n "Chrooting to $subroot..." 1.243 - mount --move /dev/pts /mnt$subroot/dev/pts 1.244 - run=$subroot/run 1.245 - mount --move /run /mnt$run 1.246 - cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed \ 1.247 - 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /mnt$run 1.248 - success <<EOT 1.249 -export LD_LIBRARY_PATH=$run:/lib 1.250 -exec /sbin/switch_root mnt $run/$(cd /mnt$run ; ls ld-*) $run/chroot $subroot /sbin/init 1.251 -EOT 1.252 -fi 1.253 -echo -n "Switching / to tmpfs" 1.254 -size="$(grep rootfssize= < /proc/cmdline | \ 1.255 - sed 's/.*rootfssize=\([0-9]*[kmg%]\).*/-o size=\1/')" 1.256 -free=$(busybox free | busybox awk '/Mem:/ { print int(($4*100)/$3) }') 1.257 -umount /proc 1.258 -[ -n "$size" ] || size="-o size=90%" 1.259 -echo "exec /sbin/init" > /run/init 1.260 -if [ $free -lt 100 ] || ! mount -t tmpfs $size tmpfs /mnt; then 1.261 - echo -e "\\033[70G[ \\033[1;33mSkipped\\033[0;39m]" 1.262 - exit 1.263 -fi 1.264 -for i in $(ls -ar /); do 1.265 - case "$i" in 1.266 - .|..) ;; 1.267 - mnt) mkdir /mnt/mnt;; 1.268 - *) if ! cp -a /$i /mnt 2> /dev/null; then 1.269 - failed 1.270 - umount /mnt 1.271 - exec /sbin/init 1.272 - fi;; 1.273 - esac 1.274 -done 1.275 -launch_init_modular 1.276 -fi 1.277 + 1.278 +header "Live Kit done, starting $LIVEKITNAME" 1.279 + 1.280 +change_root "$UNION" 1.281 + 1.282 +header "!!ERROR occured, you shouldn't be here.!!" 1.283 +/bin/sh
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 2.2 +++ b/initramfs/lib/.config Wed Mar 13 17:07:55 2013 +0000 2.3 @@ -0,0 +1,35 @@ 2.4 +#!/bin/bash 2.5 +# This is a config file for Linux Live Kit build script. 2.6 +# You shouldn't need to change anything expect LIVEKITNAME 2.7 + 2.8 +# Live Kit Name. Defaults to 'mylinux'; 2.9 +# For example, Slax changes it to 'slax' 2.10 +# Must not contain any spaces. 2.11 +# If you change it, you must run ./tools/isolinux.bin.update script 2.12 +# in order to update isolinux.bin for CD booting. 2.13 +LIVEKITNAME="slitaz" 2.14 + 2.15 +# Kernel file, will be copied to your Live Kit 2.16 +VMLINUZ=/boot/vmlinuz 2.17 + 2.18 +# Kernel version. Change it to "3.2.28" for example, if you are building 2.19 +# Live Kit with a different kernel than the one you are actually running 2.20 +KERNEL=$(uname -r) 2.21 + 2.22 +# List of directories which will be modularized 2.23 +# No subdirectories are allowed, no slashes, 2.24 +# so You can't use /var/tmp here for example 2.25 +# Exclude directories like proc sys tmp 2.26 +MKMOD="bin etc home lib lib64 opt root sbin srv usr var" 2.27 + 2.28 +# List of files and directories you'd like to exclude from your Live Kit 2.29 +EXCLUDE="/etc/fstab /etc/mtab" 2.30 + 2.31 +# Temporary directory to store livekit filesystem 2.32 +LIVEKITDATA=/tmp/$LIVEKITNAME-data-$$ 2.33 + 2.34 +# Bundle extension, for example 'sb' for .sb extension 2.35 +BEXT=xz 2.36 + 2.37 +# Directory with kernel .ko modules, can be different in some distros 2.38 +LMK="lib/modules/$KERNEL"
3.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 3.2 +++ b/initramfs/lib/livekitlib Wed Mar 13 17:07:55 2013 +0000 3.3 @@ -0,0 +1,662 @@ 3.4 +#!/bin/sh 3.5 + 3.6 +# Functions library :: for Linux Live Kit scripts 3.7 +# Author: Tomas M. <http://www.linux-live.org> 3.8 +# 3.9 + 3.10 +# ================================================================= 3.11 +# debug and output functions 3.12 +# ================================================================= 3.13 + 3.14 +debug_start() 3.15 +{ 3.16 + if grep -q debug /proc/cmdline; then 3.17 + DEBUG_IS_ENABLED=1 3.18 + else 3.19 + DEBUG_IS_ENABLED= 3.20 + fi 3.21 +} 3.22 + 3.23 +debug_log() 3.24 +{ 3.25 + if [ "$DEBUG_IS_ENABLED" ]; then 3.26 + echo "- debug: $*" >&2 3.27 + log "- debug: $*" 3.28 + fi 3.29 +} 3.30 + 3.31 +# header 3.32 +# $1 = text to show 3.33 +# 3.34 +header() 3.35 +{ 3.36 + echo "[0;1m""$@""[0;0m" 3.37 +} 3.38 + 3.39 + 3.40 +# echo green star 3.41 +# 3.42 +echo_green_star() 3.43 +{ 3.44 + echo -ne "[0;32m""* ""[0;39m" 3.45 +} 3.46 + 3.47 +# log - store given text in /var/log/livedbg 3.48 +log() 3.49 +{ 3.50 + echo "$@" 2>/dev/null >>/var/log/livedbg 3.51 +} 3.52 + 3.53 +echolog() 3.54 +{ 3.55 + echo "$@" 3.56 + log "$@" 3.57 +} 3.58 + 3.59 +# show information about the debug shell 3.60 +show_debug_banner() 3.61 +{ 3.62 + echo 3.63 + echo "=====" 3.64 + echo ": Debugging started. Here is the root shell for you." 3.65 + echo ": Type your desired commands or hit Ctrl+D to continue booting." 3.66 + echo 3.67 +} 3.68 + 3.69 +# debug_shell 3.70 +# executed when debug boot parameter is present 3.71 +# 3.72 +debug_shell() 3.73 +{ 3.74 + if [ "$DEBUG_IS_ENABLED" ]; then 3.75 + show_debug_banner 3.76 + setsid sh -c 'exec sh < /dev/tty1 >/dev/tty1 2>&1' 3.77 + echo 3.78 + fi 3.79 +} 3.80 + 3.81 +fatal() 3.82 +{ 3.83 + echolog 3.84 + header "Fatal error occured - $1" 3.85 + echolog "Something went wrong and we can't continue. This should never happen." 3.86 + echolog "Please reboot your computer with Ctrl+Alt+Delete ..." 3.87 + echolog 3.88 + setsid sh -c 'exec sh < /dev/tty1 >/dev/tty1 2>&1' 3.89 +} 3.90 + 3.91 +# get value of commandline parameter $1 3.92 +# $1 = parameter to search for 3.93 +# 3.94 +cmdline_value() 3.95 +{ 3.96 + cat /proc/cmdline | egrep -o "(^|[[:space:]])$1=[^[:space:]]+" | tr -d " " | cut -d "=" -f 2- | tail -n 1 3.97 +} 3.98 + 3.99 + 3.100 +# test if the script is started by root user. If not, exit 3.101 +# 3.102 +allow_only_root() 3.103 +{ 3.104 + if [ "0$UID" -ne 0 ]; then 3.105 + echo "Only root can run $(basename $0)"; exit 1 3.106 + fi 3.107 +} 3.108 + 3.109 +# Create bundle 3.110 +# call mksquashfs with apropriate arguments 3.111 +# $1 = directory which will be compressed to squashfs bundle 3.112 +# $2 = output file 3.113 +# $3..$9 = optional arguments like -keep-as-directory or -b 123456789 3.114 +# 3.115 +create_bundle() 3.116 +{ 3.117 + debug_log "create_module" "$*" 3.118 + rm -f "$2" # overwrite, never append to existing file 3.119 + mksquashfs "$1" "$2" -comp xz -b 512K $3 $4 $5 $6 $7 $8 $9>/dev/null 3.120 +} 3.121 + 3.122 + 3.123 +# Move entire initramfs tree to tmpfs mount. 3.124 +# It's a bit tricky but is necessray to enable pivot_root 3.125 +# even for initramfs boot image 3.126 +# 3.127 +transfer_initramfs() 3.128 +{ 3.129 + if [ ! -r /lib/initramfs_escaped ]; then 3.130 + echo "switch root from initramfs to ramfs" 3.131 + SWITCH=/m # one letter directory 3.132 + mkdir -p $SWITCH 3.133 + mount -t tmpfs -o size="100%" tmpfs $SWITCH 3.134 + cp -a /??* $SWITCH 2>/dev/null # only copy two-and-more-letter directories 3.135 + cd $SWITCH 3.136 + echo "This file indicates that we successfully escaped initramfs" > $SWITCH/lib/initramfs_escaped 3.137 + exec switch_root -c /dev/console . $0 3.138 + fi 3.139 +} 3.140 + 3.141 +copy_initramfs() 3.142 +{ 3.143 + SWITCH=$1 # one letter directory 3.144 + mkdir -p $SWITCH 3.145 + SYS_DIR="dev bin etc boot lib sbin home root run usr var" 3.146 + for dir in $SYS_DIR; do 3.147 + cp -a /$dir /$SWITCH 3.148 + done 3.149 + 3.150 +} 3.151 + 3.152 +# mount virtual filesystems like proc etc 3.153 +# 3.154 +init_proc_sysfs() 3.155 +{ 3.156 + debug_log "init_proc_sysfs" "$*" 3.157 + mkdir -p /proc /sys /etc $MEMORY 3.158 + mount -n -t proc proc /proc 3.159 + echo "0" >/proc/sys/kernel/printk 3.160 + mount -n -t sysfs sysfs /sys 3.161 + mount -n -o remount,rw rootfs / 3.162 + ln -sf /proc/mounts /etc/mtab 3.163 +} 3.164 + 3.165 +# make sure some devices are there 3.166 +init_devs() 3.167 +{ 3.168 + debug_log "init_devs" "$*" 3.169 + echo /sbin/mdev > /proc/sys/kernel/hotplug 3.170 + mdev -s 3.171 + modprobe zram 2>/dev/null 3.172 + modprobe loop 2>/dev/null 3.173 + modprobe squashfs 2>/dev/null 3.174 + modprobe fuse 2>/dev/null 3.175 +} 3.176 + 3.177 +# Activate zram (auto-compression of RAM) 3.178 +# Compressed RAM consumes 1/2 or even 1/4 of original size 3.179 +# Setup static size of 500MB 3.180 +# 3.181 +init_zram() 3.182 +{ 3.183 + debug_log "init_zram" "$*" 3.184 + echo_green_star 3.185 + echo "Setting dynamic RAM compression using ZRAM" 3.186 + echo 536870912 > /sys/block/zram0/disksize # 512MB 3.187 + mkswap /dev/zram0 >/dev/null 3.188 + swapon /dev/zram0 -p 32767 3.189 + echo 100 > /proc/sys/vm/swappiness 3.190 +} 3.191 + 3.192 +# load the AUFS kernel module if needed 3.193 +# 3.194 +init_aufs() 3.195 +{ 3.196 + debug_log "init_aufs" "$*" 3.197 + # TODO maybe check here if aufs support is working at all 3.198 + # and procude useful error message if user has no aufs 3.199 + modprobe aufs brs=1 2>/dev/null 3.200 +} 3.201 + 3.202 +# Setup empty union 3.203 +# $1 = changes directory (ramfs or persistent changes) 3.204 +# $2 = union directory where to mount the union 3.205 +# 3.206 +init_union() 3.207 +{ 3.208 + debug_log "init_union" "$*" 3.209 + 3.210 + echo_green_star 3.211 + echo "Setting up union using AUFS 3" 3.212 + mkdir -p "$1" 3.213 + mkdir -p "$2" 3.214 + mount -t aufs -o nowarn_perm,xino="/.xino",trunc_xino,br="$1" aufs "$2" 3.215 + if [ $? -ne 0 ]; then dmesg | tail -n 1; fatal "can't setup union (aufs)"; fi 3.216 +} 3.217 + 3.218 +# Return device mounted for given directory 3.219 +# $1 = directory 3.220 +# 3.221 +mounted_device() 3.222 +{ 3.223 + debug_log "mounted_device" "$*" 3.224 + 3.225 + local MNT TARGET 3.226 + MNT="$1" 3.227 + while [ "$MNT" != "/" -a "$MNT" != "." -a "$MNT" != "" ]; do 3.228 + TARGET="$(grep -F " $MNT " /proc/mounts | cut -d " " -f 1)" 3.229 + if [ "$TARGET" != "" ]; then 3.230 + echo "$TARGET" 3.231 + return 3.232 + fi 3.233 + MNT="$(dirname "$MNT")" 3.234 + done 3.235 +} 3.236 + 3.237 +# Return mounted dir for given directory 3.238 +# $1 = directory 3.239 +# 3.240 +mounted_dir() 3.241 +{ 3.242 + debug_log "mounted_dir" "$*" 3.243 + 3.244 + local MNT 3.245 + MNT="$1" 3.246 + while [ "$MNT" != "/" -a "$MNT" != "." -a "$MNT" != "" ]; do 3.247 + if mountpoint -q "$MNT" 2>/dev/null; then 3.248 + echo "$MNT" 3.249 + return 3.250 + fi 3.251 + MNT="$(dirname "$MNT")" 3.252 + done 3.253 +} 3.254 + 3.255 +# Make sure to mount FAT12/16/32 using vfat 3.256 +# in order to support long filenames 3.257 +# $1 = device 3.258 +# 3.259 +device_bestfs() 3.260 +{ 3.261 + debug_log "device_bestfs" "$*" 3.262 + local FS 3.263 + 3.264 + FS="$(blkid "$1" | sed -r "s/.* TYPE=//" | sed -r 's/ .*//' | tr -d '"' | tr [A-Z] [a-z])" 3.265 + if [ "$FS" = "msdos" -o "$FS" = "fat" -o "$FS" = "vfat" ]; then 3.266 + FS="vfat" 3.267 + elif [ "$FS" = "ntfs" ]; then 3.268 + FS="ntfs-3g" 3.269 + elif [ "$1" = "iso9660" -o "$1" = "udf" ]; then 3.270 + echo -n ",ro" 3.271 + else 3.272 + echo "-t $FS" 3.273 + fi 3.274 +} 3.275 + 3.276 +# Filesystem options for mount 3.277 +# $1 = filesystem or '-t filesystem' 3.278 +# 3.279 +fs_options() 3.280 +{ 3.281 + debug_log "fs_options" "$*" 3.282 + 3.283 + if [ "$1" = "-t" ]; then 3.284 + shift 3.285 + fi 3.286 + if [ "$1" = "vfat" ]; then 3.287 + echo "-o check=s,shortname=mixed,iocharset=utf8" 3.288 + fi 3.289 +} 3.290 + 3.291 + 3.292 +# Modprobe network kernel modules until a working driver is found. 3.293 +# These drivers are (or used to be) probed in Slackware's initrd. 3.294 +# The function returns the first device found, yet it doesn't have 3.295 +# to be a working one, eg. if the computer has two network interfaces 3.296 +# and ethernet cable is plugged only to one of them. 3.297 +# 3.298 +init_network_dev() 3.299 +{ 3.300 + debug_log "init_network_dev" "$*" 3.301 + local MODULE ETH 3.302 + 3.303 + for MODULE in 3c59x acenic de4x5 e1000 e1000e e100 epic100 hp100 \ 3.304 + ne2k-pci pcnet32 8139too 8139cp tulip via-rhine r8169 atl1e yellowfin \ 3.305 + tg3 dl2k ns83820 atl1 b44 bnx2 skge sky2 tulip depca 3c501 3c503 \ 3.306 + 3c505 3c507 3c509 3c515 ac3200 at1700 cosa cs89x0 de600 de620 e2100 \ 3.307 + eepro eexpress eth16i ewrk3 forcedeth hostess_sv11 hp-plus hp ni52 \ 3.308 + ni65 sb1000 sealevel smc-ultra sis900 smc9194 wd; do 3.309 + modprobe $MODULE 2>/dev/null 3.310 + ETH="$(cat /proc/net/dev | grep : | grep -v lo: | cut -d : -f 1 | tr -d " " | head -n 1)" 3.311 + if [ "$ETH" != "" ]; then 3.312 + echo $ETH 3.313 + return 0 3.314 + fi 3.315 + rmmod $MODULE 2>/dev/null 3.316 + done 3.317 + 3.318 + # If we are here, none of the above specified modules worked. 3.319 + # As a last chance, try to modprobe everything. 3.320 + find /lib/modules/ | xargs -n 1 modprobe 3.321 + cat /proc/net/dev | grep : | grep -v lo: | cut -d : -f 1 | tr -d " " | head -n 1 3.322 +} 3.323 + 3.324 + 3.325 +# Download data from tftp 3.326 +# $1 = target (store downloaded files there) 3.327 +# 3.328 +download_data_pxe() 3.329 +{ 3.330 + debug_log "download_data_pxe" "$*" 3.331 + local CMD CLIENT SERVER GW MASK PORT ETH PROTOCOL 3.332 + 3.333 + mkdir -p "$1/$LIVEKITNAME" 3.334 + 3.335 + cmdline_value ip | while IFS=":" read CLIENT SERVER GW MASK PORT; do 3.336 + echo_green_star >&2 3.337 + echo "Downloading files from $SERVER ..." >&2 3.338 + 3.339 + ETH=$(init_network_dev) 3.340 + if [ "$PORT" = "" ]; then PORT="7529"; fi 3.341 + 3.342 + # set IP address as given by boot paramter 3.343 + if [ "$CLIENT" != "" -a "$MASK" != "" ]; then 3.344 + ifconfig $ETH "$CLIENT" netmask "$MASK" 3.345 + route add default gw "$GW" 3.346 + else 3.347 + # if client ip is unknown, try to get a DHCP lease 3.348 + udhcpc -i $ETH -f -q 3.349 + fi 3.350 + 3.351 + # well known IP address of Google public DNS service 3.352 + echo nameserver 8.8.8.8 >> /etc/resolv.conf 3.353 + 3.354 + PROTOCOL=http 3.355 + wget -q -O "$1/PXEFILELIST" "http://$SERVER:$PORT/PXEFILELIST?$(uname -r):$(uname -m)" 3.356 + if [ $? -ne 0 ]; then 3.357 + echo "Error downloading from http://$SERVER:$PORT, trying TFTP" >&2 3.358 + PROTOCOL=tftp 3.359 + tftp -g -r PXEFILELIST -l "$1/PXEFILELIST" $SERVER 3.360 + fi 3.361 + 3.362 + cat "$1/PXEFILELIST" | while read FILE; do 3.363 + if [ "$PROTOCOL" = "http" ]; then 3.364 + wget -O "$1/$LIVEKITNAME/$FILE" "http://$SERVER:$PORT/$FILE" 3.365 + else 3.366 + echo "* $FILE ..." >&2 3.367 + tftp -g -r $FILE -l "$1/$LIVEKITNAME/$FILE" $SERVER 3.368 + fi 3.369 + done 3.370 + done 3.371 + 3.372 + echo "$1/$LIVEKITNAME" 3.373 +} 3.374 + 3.375 +# Find LIVEKIT data by mounting all devices 3.376 +# If found, keep mounted, else unmount 3.377 +# $1 = data directory target (mount here) 3.378 +# $2 = data directory which contains compressed bundles 3.379 +# 3.380 +find_data_try() 3.381 +{ 3.382 + debug_log "find_data_try" "$*" 3.383 + 3.384 + local DEVICE FS FROM OPTIONS 3.385 + 3.386 + mkdir -p "$1" 3.387 + blkid | sort | cut -d: -f 1 | grep -E -v "/loop|/ram|/zram" | while read DEVICE; do 3.388 + FROM="$2" 3.389 + FS="$(device_bestfs "$DEVICE")" 3.390 + OPTIONS="$(fs_options $FS)" 3.391 + mount -r "$DEVICE" "$1" $FS $OPTIONS 2>/dev/null 3.392 + 3.393 + # if the FROM parameter is actual file, mount it again as loop (eg. iso) 3.394 + if [ -f "$1/$FROM" ]; then 3.395 + mount -o remount,rw "$DEVICE" "$1" 2>/dev/null 3.396 + mkdir -p "$1/../iso" 3.397 + mount -o loop,ro "$1/$FROM" "$1/../iso" 2>/dev/null 3.398 + FROM="../iso/$LIVEKITNAME" 3.399 + fi 3.400 + 3.401 + # search for bundles in the mounted directory 3.402 + if [ "$(find "$1/$FROM" -maxdepth 2 -name "*.$BEXT" 2>/dev/null)" != "" ]; then 3.403 + # we found at least one bundle/module here 3.404 + mount -o remount,rw "$DEVICE" "$1" 2>/dev/null 3.405 + echo "$1/$FROM" | tr -s "/" | sed -r "s:/[^/]+/[.][.]/:/:g" 3.406 + return 3.407 + fi 3.408 + 3.409 + # unmount twice, since there could be mounted ISO as loop too. If not, it doesn't hurt 3.410 + umount "$1" 2>/dev/null 3.411 + umount "$1" 2>/dev/null 3.412 + done 3.413 +} 3.414 + 3.415 +# Retry finding LIVEKIT data several times, 3.416 +# until timeouted or until data is found 3.417 +# $1 = timeout 3.418 +# $2 = data directory target (mount here) 3.419 +# 3.420 +find_data() 3.421 +{ 3.422 + debug_log "find_data" "$*" 3.423 + 3.424 + local DATA FROM 3.425 + 3.426 + if [ "$(cmdline_value ip)" != "" ]; then 3.427 + download_data_pxe "$2" 3.428 + return 3.429 + fi 3.430 + 3.431 + FROM="$(cmdline_value from)" 3.432 + if [ "$FROM" = "" ]; then FROM="$LIVEKITNAME"; fi 3.433 + 3.434 + echo_green_star >&2 3.435 + echo -n "Looking for $LIVEKITNAME data in /$FROM .." | tr -s "/" >&2 3.436 + for timeout in $(seq 1 $1); do 3.437 + echo -n "." >&2 3.438 + DATA="$(find_data_try "$2" "$FROM")" 3.439 + if [ "$DATA" != "" ]; then 3.440 + echo "" >&2 3.441 + echo "* Found on $(mounted_device "$2")" >&2 3.442 + echo "$DATA" 3.443 + return 3.444 + fi 3.445 + sleep 1 3.446 + done 3.447 + echo "" >&2 3.448 + 3.449 + if [ "$DATA" = "" ]; then 3.450 + fatal "$LIVEKITNAME data not found" 3.451 + fi 3.452 + 3.453 +} 3.454 + 3.455 +# Activate persistent changes 3.456 +# $1 = data directory 3.457 +# $2 = target changes directory 3.458 +# 3.459 +persistent_changes() 3.460 +{ 3.461 + debug_log "persistent_changes" "$*" 3.462 + 3.463 + local CHANGES T1 T2 3.464 + 3.465 + CHANGES="$1/$(basename "$2")" 3.466 + T1="$CHANGES/.empty" 3.467 + T2="$T1"2 3.468 + 3.469 + # Setup the directory anyway, it will be used in all cases 3.470 + mkdir -p "$2" 3.471 + 3.472 + # If persistent changes are not requested, end here 3.473 + if grep -vq perch /proc/cmdline; then 3.474 + return 3.475 + fi 3.476 + 3.477 + # check if changes directory exists and is writable 3.478 + touch "$T1" 2>/dev/null && rm -f "$T1" 2>/dev/null 3.479 + 3.480 + # if not, simply return back 3.481 + if [ $? -ne 0 ]; then 3.482 + echo "* Persistent changes not writable or not used" 3.483 + return 3.484 + fi 3.485 + 3.486 + echo_green_star 3.487 + echo "Testing persistent changes for posix compatibility" 3.488 + touch "$T1" && ln -sf "$T1" "$T2" 2>/dev/null && \ 3.489 + chmod +x "$T1" 2>/dev/null && test -x "$T1" && \ 3.490 + chmod -x "$T1" 2>/dev/null && test ! -x "$T1" && \ 3.491 + rm "$T1" "$T2" 2>/dev/null 3.492 + 3.493 + if [ $? -ne 0 ]; then 3.494 + echo "* Activating dynamic sized storage for persistent changes" 3.495 + rm "$T1" "$T2" 2>/dev/null 3.496 + 3.497 + mount.dynfilefs "$CHANGES/changes.dat" 4000 "$2" 3.498 + if [ "$(device_bestfs "$2/loop.fs" | tr -d " ")" = "-t" ]; then 3.499 + mke2fs -F "$2/loop.fs" >/dev/null 3.500 + fi 3.501 + mount -o loop,sync "$2/loop.fs" "$2" 3.502 + rmdir "$2/lost+found" 2>/dev/null 3.503 + else 3.504 + echo "* Activating native persistent changes" 3.505 + mount --bind "$CHANGES" "$2" 3.506 + fi 3.507 +} 3.508 + 3.509 +# Copy content of rootcopy directory to union 3.510 +# $1 = data directory 3.511 +# $2 = union directory 3.512 +copy_rootcopy_content() 3.513 +{ 3.514 + debug_log "copy_rootcopy_content" "$*" 3.515 + 3.516 + if [ "$(ls -1 "$1/rootcopy/" 2>/dev/null)" != "" ]; then 3.517 + echo_green_star 3.518 + echo "Copying content of rootcopy directory..." 3.519 + cp -a "$1"/rootcopy/* "$2" 3.520 + fi 3.521 +} 3.522 + 3.523 +# Copy data to RAM if requested 3.524 +# $1 = live data directory 3.525 +# $2 = changes directory 3.526 +# 3.527 +copy_to_ram() 3.528 +{ 3.529 + debug_log "copy_to_ram" "$*" 3.530 + 3.531 + local MDIR MDEV RAM CHANGES 3.532 + 3.533 + if grep -vq toram /proc/cmdline; then 3.534 + echo "$1" 3.535 + return 3.536 + fi 3.537 + 3.538 + echo "* Copying $LIVEKITNAME data to RAM..." >&2 3.539 + RAM="$(dirname "$2")"/toram 3.540 + mkdir -p "$RAM" 3.541 + cp -a "$1"/* "$RAM" 3.542 + echo "$RAM" 3.543 + 3.544 + MDIR="$(mounted_dir "$1")" 3.545 + MDEV="$(mounted_device "$1")" 3.546 + MDEV="$(losetup $MDEV 2>/dev/null | cut -d " " -f 3)" 3.547 + umount "$MDIR" 2>/dev/null 3.548 + 3.549 + if [ "$MDEV" ]; then # iso was mounted here, try to unmount the FS it resides on too 3.550 + MDEV="$(mounted_device "$MDEV")" 3.551 + umount "$MDEV" 2>/dev/null 3.552 + fi 3.553 +} 3.554 + 3.555 +# load filter 3.556 +# 3.557 +filter_load() 3.558 +{ 3.559 + local FILTER 3.560 + FILTER=$(cmdline_value load) 3.561 + if [ "$FILTER" = "" ]; then 3.562 + cat - 3.563 + else 3.564 + cat - | egrep "$FILTER" 3.565 + fi 3.566 +} 3.567 + 3.568 +# noload filter 3.569 +# 3.570 +filter_noload() 3.571 +{ 3.572 + local FILTER 3.573 + FILTER=$(cmdline_value load) 3.574 + if [ "$FILTER" = "" ]; then 3.575 + cat - 3.576 + else 3.577 + cat - | egrep -v "$FILTER" 3.578 + fi 3.579 +} 3.580 + 3.581 +# sort modules by number even if they are in subdirectory 3.582 +# 3.583 +sortmod() 3.584 +{ 3.585 + cat - | sed -r "s,(.*/(.*)),\\2:\\1," | sort -n | cut -d : -f 2- 3.586 +} 3.587 + 3.588 +# Mount squashfs filesystem bundles 3.589 +# and add them to union 3.590 +# $1 = directory where to search for bundles 3.591 +# $2 = directory where to mount bundles 3.592 +# $3 = directory where union is mounted 3.593 +# 3.594 +union_append_bundles() 3.595 +{ 3.596 + debug_log "union_append_bundles" "$*" 3.597 + 3.598 + local BUN 3.599 + 3.600 + echo_green_star 3.601 + echo "Adding bundles to union" 3.602 + ( ls -1 "$1" | sort -n ; cd "$1" ; find base/ 2>/dev/null ; find modules/ 2>/dev/null | sortmod | filter_load) | grep '[.]'$BEXT'$' | filter_noload | while read BUNDLE; do 3.603 + echo "* $BUNDLE" 3.604 + BUN="$(basename "$BUNDLE")" 3.605 + mkdir -p "$2/$BUN" 3.606 + mount -o loop -t squashfs "$1/$BUNDLE" "$2/$BUN" 3.607 + mount -n -o remount,add:1:$2/$BUN=rr aufs $3 3.608 + done 3.609 +} 3.610 + 3.611 +# Create empty fstab properly 3.612 +# $1 = root directory 3.613 +# 3.614 +fstab_create() 3.615 +{ 3.616 + debug_log "fstab_create" "$*" 3.617 + 3.618 + local FSTAB 3.619 + FSTAB="$1/etc/fstab" 3.620 + echo aufs / aufs defaults 0 0 > $FSTAB 3.621 + echo proc /proc proc defaults 0 0 >> $FSTAB 3.622 + echo sysfs /sys sysfs defaults 0 0 >> $FSTAB 3.623 + echo devpts /dev/pts devpts gid=5,mode=620 0 0 >> $FSTAB 3.624 + echo tmpfs /dev/shm tmpfs defaults 0 0 >> $FSTAB 3.625 +} 3.626 + 3.627 + 3.628 +# Change root and execute init 3.629 +# $1 = where to change root 3.630 +# 3.631 +change_root() 3.632 +{ 3.633 + debug_log "change_root" "$*" 3.634 + 3.635 + umount /proc 3.636 + umount /sys 3.637 + 3.638 + cd "$1" 3.639 + 3.640 + # make sure important device files and directories are in union 3.641 + mkdir -p boot dev proc sys tmp mnt run 3.642 + chmod 1777 tmp 3.643 + if [ ! -e dev/console ]; then mknod dev/console c 5 1; fi 3.644 + if [ ! -e dev/tty ]; then mknod dev/tty c 5 0; fi 3.645 + if [ ! -e dev/tty0 ]; then mknod dev/tty0 c 4 0; fi 3.646 + if [ ! -e dev/tty1 ]; then mknod dev/tty1 c 4 1; fi 3.647 + if [ ! -e dev/null ]; then mknod dev/null c 1 3; fi 3.648 + if [ ! -e sbin/fsck.aufs ]; then ln -s /bin/true sbin/fsck.aufs; fi 3.649 + 3.650 + # find chroot and init 3.651 + if [ -x bin/chroot ]; then CHROOT=bin/chroot; fi 3.652 + if [ -x sbin/chroot ]; then CHROOT=sbin/chroot; fi 3.653 + if [ -x usr/bin/chroot ]; then CHROOT=usr/bin/chroot; fi 3.654 + if [ -x usr/sbin/chroot ]; then CHROOT=usr/sbin/chroot; fi 3.655 + if [ "$CHROOT" = "" ]; then fatal "Can't find executable chroot command"; fi 3.656 + 3.657 + if [ -x bin/init ]; then INIT=bin/init; fi 3.658 + if [ -x sbin/init ]; then INIT=sbin/init; fi 3.659 + if [ "$INIT" = "" ]; then fatal "Can't find executable init command"; fi 3.660 + 3.661 + mkdir -p mnt/live 3.662 + mount -n -o remount,ro aufs . 3.663 + pivot_root . mnt/live 3.664 + exec $CHROOT . $INIT < dev/console > dev/console 2>&1 3.665 +}