Delete livekitlib
johndah4x0r
GitHub
parent
927876ed4d
commit
3d2b5087e8
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#!/bin/sh
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# Functions library :: for Linux Live Kit scripts
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# Original author: Tomas M. <http://www.linux-live.org>
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# Modified by: 'JohnDaH4x0r' <terencedoesmc12 AT gmail DOT com>
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# related to build script
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# get_exclude: Generate exclude arguments for 'mksquashfs'
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# $1: the exclude list ("$EXCLUDE", if you use .config)
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get_exclude()
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{
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EXCLUDE_LIST="$1"
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PARENT_DIR="$(echo "$2" | tr -s "/")"
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if [ -z "$PARENT_DIR" ]; then
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return 1
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elif [ "$PARENT_DIR" = "/" ]; then
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return 1
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fi
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echo "$EXCLUDE_LIST" | tr " " "\n" | grep "$PARENT_DIR" \
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echo -n "-e $KEY "
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done
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}
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# NOTE: DO NOT TOUCH THE ESCAPE CHARACTERS!
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BLUE="[1;34m"
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YELLOW="[1;33m"
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ORANGE="[0;33m"
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GREEN="[1;32m"
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BOLD="[0;1m"
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RED="[1;31m"
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NC="[0m"
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# debug related
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debug_start()
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{
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if grep -q 'debug' /proc/cmdline; then
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DEBUG_IS_ENABLED=1
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else
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DEBUG_IS_ENABLED=
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fi
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}
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dbg_shell_start()
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{
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if grep -q 'dbg_shell' /proc/cmdline; then
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DBG_SHELL=1
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else
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DBG_SHELL=
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fi
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}
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debug_log()
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{
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if [ "$DEBUG_IS_ENABLED" ]; then
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echo "[${GREEN}"' debug '"${NC}]: $@" >&2
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log "debug_log: $*"
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fi
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}
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# echo related functions
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# echo fatal tag
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# $1 = text to show
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echo_fatal()
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{
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echo "[${RED}"' fatal '"${NC}] $@" >&2
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}
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# echo bold
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# $1 = text to show
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#
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echo_bold()
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{
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echo "$BOLD""$@""$NC"
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}
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# echo livekit tag
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echo_livekit()
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{
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echo "[${BLUE}"'livekit'"${NC}] "
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}
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echo_livekit_msg()
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{
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echo "[${BLUE}"'livekit'"${NC}] $@"
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}
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# echo error
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echo_err()
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{
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echo "[${RED}"' error '"${NC}] $@" >&2
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}
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# echo warn
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echo_warn()
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{
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echo "[${YELLOW}"' warn! '"${NC}] $@" >&2
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}
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# echo signature
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echo_sign()
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{
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echo "${BOLD}"' Linux Live Kit Improved v1.0 - '"$* ${NC}"
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}
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# log - store given text in /var/log/livedbg
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log()
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{
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echo "$@" 2>/dev/null >>/var/log/livekit-log
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}
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echolog()
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{
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echo "$@"
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log "echolog: $@"
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}
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# show information about the debug shell
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show_debug_banner()
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{
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echo_sign "DEBUGGING MODE"
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echo "The root shell is prepared for you!" >&2
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echo "Type your desired commands or press Ctrl-D to continue booting." >&2
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echo >&2
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}
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# debug_shell
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# executed when debug boot parameter is present
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#
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debug_shell()
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{
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if [ "$DBG_SHELL" ]; then
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show_debug_banner
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setsid sh -c 'exec sh < /dev/tty1 >/dev/tty1 2>&1'
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echo
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fi
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}
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fatal()
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{
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log "FatalError: $@"
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echo_fatal "$@"
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echo_sign "EMERGENCY MODE" >&2
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echo_bold "Please consult /var/log/livekit-log for more info." >&2
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setsid sh -c 'exec sh < /dev/tty1 >/dev/tty1 2>&1'
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}
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# test if the script is started by root user. If not, exit
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#
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allow_only_root()
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{
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if [ "0$UID" -ne 0 ]; then
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echo_err "Only root can run $(basename $0)"; exit 1
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fi
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}
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# Make bundle
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# call mksquashfs with apropriate arguments
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# $1 = directory which will be compressed to squashfs bundle
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# $2 = output file
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# $3..$9 = optional arguments like -keep-as-directory or -b 123456789
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#
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mkbund()
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{
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debug_log "mkbund" "$*"
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if [ -e "$2" ]; then
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echo_warn "mkbund: $(basename $2): File already exists!"
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echo_warn "mkbund: $(basename $2): Deleting file..."
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rm -f "$2"
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else
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echo_livekit_msg "mkbund: $(basename $2): Making new bundle..."
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fi
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echo_livekit_msg "mkbund: SquashFS compression: 1024k - XZ" >&2
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echo_livekit_msg "mkbund: $(basename $2): Compressing bundle..." >&2
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mksquashfs "$1" "$2" -comp xz -b 1024k $3 $4 $5 $6 $7 $8 $9 >/dev/null || \
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(echo_err "mkbund: Failed to make bundle!" && exit 1)
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}
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# Now, for the Live Kit system-related stuff
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# get value of kernel cmdline parameter $1
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# $1 = parameter to search for
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#
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cmdline_value()
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{
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cat /proc/cmdline | egrep -o "(^|[[:space:]])$1=[^[:space:]]+" | \
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tr -d " " | cut -d "=" -f 2- | tail -n 1
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}
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# Move entire initramfs tree to tmpfs mount.
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# It's a bit tricky but is necessray to enable pivot_root
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# even for initramfs boot image
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#
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transfer_initramfs()
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{
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if [ ! -r /lib/esc_initramfs.sgn ]; then
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echo_livekit >&2
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echo "Switching root from initramfs to tmpfs..." >&2
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SWITCH=/m # one letter directory
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mkdir -p $SWITCH
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mount -t tmpfs -o size="100%" tmpfs "$SWITCH"
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cp -a /??* "$SWITCH" 2>/dev/null # only copy two-and-more-letter directories
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cd $SWITCH
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echo "This file indicates that we successfully escaped initramfs" >"$SWITCH"/lib/esc_initramfs.sgn
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exec switch_root -c /dev/console . "$0"
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fi
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}
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# mount virtual filesystems like proc, sys and such
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#
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init_proc_sysfs()
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{
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debug_log "init_proc_sysfs" "$*"
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mkdir -p /proc /sys /etc "$MEMORY"
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mount -n -t proc proc /proc
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echo "0" >/proc/sys/kernel/printk
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mount -n -t sysfs sysfs /sys
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mount -n -o remount,rw rootfs /
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ln -sf /proc/mounts /etc/mtab
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}
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# modprobe all modules found in initial ramdisk
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modprobe_everything()
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{
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debug_log "modprobe_everything" "$*"
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echo_livekit_msg "Probing for hardware..." >&2
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find /lib/modules/ | fgrep '.ko' | xargs -n 1 modprobe 2>/dev/null
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refresh_devs
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}
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refresh_devs()
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{
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debug_log "refresh_devs" "$*"
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if [ -r /proc/sys/kernel/hotplug ]; then
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echo /sbin/mdev > /proc/sys/kernel/hotplug
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fi
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mdev -s
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}
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# make sure some devices are there
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init_devs()
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{
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debug_log "init_devs" "$*"
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modprobe zram 2>/dev/null
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modprobe loop 2>/dev/null
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modprobe squashfs 2>/dev/null
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modprobe fuse 2>/dev/null
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refresh_devs
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}
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# Activate zram (auto-compression of RAM)
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# Compressed RAM consumes 1/2 or even 1/4 of original size
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# Setup static size of 500MB
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#
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init_zram()
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{
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debug_log "init_zram" "$*"
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echo_livekit_msg "Setting up ZRAM as swap if available..."
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if [ -r /sys/block/zram0/disksize ]; then
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echo 536870912 > /sys/block/zram0/disksize # 512MB
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mkswap /dev/zram0 >/dev/null
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swapon /dev/zram0 -p 32767
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echo 100 > /proc/sys/vm/swappiness
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fi
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}
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# load the AUFS kernel module if needed
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#
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init_aufs()
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{
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debug_log "init_aufs" "$*"
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# Prepare for error messages
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echo >>/var/log/livkekit-log
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modprobe aufs 2>/var/log/livekit-log
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# If aufs module failed to load, panic immidiately
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if [ $? -ne 0 ]; then
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fatal "Failed to load AUFS module!"
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fi
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# finally, refresh all devices
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refresh_devs
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}
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# Setup empty union
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# $1 = changes directory (ramfs or persistent changes)
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# $2 = union directory where to mount the union
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#
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init_union()
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{
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debug_log "init_union" "$*"
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echo_livekit_msg "Initialising AUFS union..."
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mkdir -p "$1"
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mkdir -p "$2"
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# Prepare for error messages
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echo >>/var/log/livekit-log
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mount -t aufs -o xino="/.xino",trunc_xino,br="$1" aufs "$2" >/var/log/livekit-log 2>&1
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# If failed to init union, panic
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if [ $? -ne 0 ]; then
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fatal "Failed to initialise AUFS union!"
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fi
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}
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# Return device mounted for given directory
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# $1 = directory
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#
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mounted_device()
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{
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debug_log "mounted_device" "$*"
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local MNT TARGET
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MNT="$1"
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while [ "$MNT" != "/" -a "$MNT" != "." -a "$MNT" != "" ]; do
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TARGET="$(grep -F " $MNT " /proc/mounts | cut -d " " -f 1)"
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if [ "$TARGET" != "" ]; then
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echo "$TARGET"
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return
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fi
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MNT="$(dirname "$MNT")"
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done
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}
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# Return mounted dir for given directory
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# $1 = directory
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#
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mounted_dir()
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{
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debug_log "mounted_dir" "$*"
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local MNT
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MNT="$1"
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while [ "$MNT" != "/" -a "$MNT" != "." -a "$MNT" != "" ]; do
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if mountpoint -q "$MNT" 2>/dev/null; then
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echo "$MNT"
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return
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fi
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MNT="$(dirname "$MNT")"
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done
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}
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# Make sure to mount FAT12/16/32 using vfat
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# in order to support long filenames
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# $1 = device
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#
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device_bestfs()
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{
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debug_log "device_bestfs" "$*"
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local FS
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FS="$(blkid "$1" | sed -r "s/.*TYPE=//" | tr -d '"' | \
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tr "[A-Z]" "[a-z]" | cut -d ' ' -f 1)"
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if [ "$FS" = "msdos" -o "$FS" = "fat" ]; then
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FS="vfat"
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elif [ "$FS" = "ntfs" ]; then
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FS="ntfs-3g"
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else
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FS="$FS"
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fi
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echo "-t $FS"
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}
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# Filesystem options for mount
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# $1 = filesystem or '-t filesystem'
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#
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fs_options()
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{
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debug_log "fs_options" "$*"
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if [ "$1" = "-t" ]; then
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shift
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fi
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if [ "$1" = "vfat" ]; then
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echo "-o check=s,shortname=mixed,iocharset=utf8"
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fi
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}
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# Modprobe network kernel modules until a working driver is found.
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# These drivers are (or used to be) probed in Slackware's initrd.
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# The function returns the first device found, yet it doesn't have
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# to be a working one, eg. if the computer has two network interfaces
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# and ethernet cable is plugged only to one of them.
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#
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init_network_dev()
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{
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debug_log "init_network_dev" "$*"
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echo_livekit_msg "Preparing networking device(s)..." >&2
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local MODULE ETH
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for MODULE in 3c59x acenic de4x5 e1000 e1000e e100 epic100 hp100 \
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ne2k-pci pcnet32 8139too 8139cp tulip via-rhine r8169 atl1e yellowfin \
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tg3 dl2k ns83820 atl1 b44 bnx2 skge sky2 tulip depca 3c501 3c503 \
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3c505 3c507 3c509 3c515 ac3200 at1700 cosa cs89x0 de600 de620 e2100 \
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eepro eexpress eth16i ewrk3 forcedeth hostess_sv11 hp-plus hp ni52 \
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ni65 sb1000 sealevel smc-ultra sis900 smc9194 wd; do
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|
||||||
modprobe $MODULE 2>/dev/null
|
|
||||||
ETH="$(cat /proc/net/dev | grep : | grep -v lo: | cut -d : -f 1 | tr -d " " | head -n 1)"
|
|
||||||
if [ "$ETH" != "" ]; then
|
|
||||||
echo "$ETH"
|
|
||||||
return 0
|
|
||||||
fi
|
|
||||||
rmmod $MODULE 2>/dev/null
|
|
||||||
done
|
|
||||||
|
|
||||||
# If we are here, none of the above specified modules worked.
|
|
||||||
# As a last chance, try to modprobe everything.
|
|
||||||
echo_warn "No networking kernel module found!"
|
|
||||||
modprobe_everything
|
|
||||||
cat /proc/net/dev | grep ':' | grep -v 'lo:' | cut -d : -f 1 | tr -d " " | head -n 1
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
# Download data from tftp
|
|
||||||
# $1 = target (store downloaded files there)
|
|
||||||
#
|
|
||||||
download_data_pxe()
|
|
||||||
{
|
|
||||||
debug_log "download_data_pxe" "$*"
|
|
||||||
local CMD CLIENT SERVER GW MASK PORT ETH PROTOCOL
|
|
||||||
|
|
||||||
mkdir -p "$1/$LIVEKITNAME"
|
|
||||||
|
|
||||||
cmdline_value ip | while IFS=":" read CLIENT SERVER GW MASK PORT; do
|
|
||||||
echo_livekit_msg "Downloading files from ${SERVER}..." >&2
|
|
||||||
|
|
||||||
ETH=$(init_network_dev)
|
|
||||||
if [ "$PORT" = "" ]; then
|
|
||||||
PORT="7529"
|
|
||||||
fi
|
|
||||||
|
|
||||||
# set IP address as given by boot paramter
|
|
||||||
if [ -n "$CLIENT" ] && [ -n "$MASK" ]; then
|
|
||||||
ifconfig $ETH "$CLIENT" netmask "$MASK"
|
|
||||||
route add default gw "$GW"
|
|
||||||
else
|
|
||||||
# if client ip is unknown, try to get a DHCP lease
|
|
||||||
udhcpc -i $ETH -f -q
|
|
||||||
fi
|
|
||||||
|
|
||||||
# well known IP address of Google public DNS service
|
|
||||||
echo nameserver 8.8.8.8 >> /etc/resolv.conf
|
|
||||||
|
|
||||||
PROTOCOL=http
|
|
||||||
wget -q -O "$1/PXEFILELIST" "http://$SERVER:$PORT/PXEFILELIST?$(uname -r):$(uname -m)"
|
|
||||||
if [ $? -ne 0 ]; then
|
|
||||||
echo_warn "Failed to download from http://${SERVER}:${PORT}!" >&2
|
|
||||||
echo_livekit_msg 'Downloading with TFTP protocol...' >&2
|
|
||||||
PROTOCOL=tftp
|
|
||||||
tftp -g -r PXEFILELIST -l "$1/PXEFILELIST" $SERVER
|
|
||||||
fi
|
|
||||||
|
|
||||||
cat "$1/PXEFILELIST" | while read FILE; do
|
|
||||||
if [ "$PROTOCOL" = "http" ]; then
|
|
||||||
echo_livekit_msg "PXE-HTTP: Downloading ${FILE}..." >&2
|
|
||||||
wget -O "$1/$LIVEKITNAME/$FILE" "http://$SERVER:$PORT/$FILE"
|
|
||||||
elif [ "$PROTOCOL" = "tftp" ]; then
|
|
||||||
echo_livekit_msg "PXE-TFTP: Downloading ${FILE}..." >&2
|
|
||||||
tftp -g -r $FILE -l "$1/$LIVEKITNAME/$FILE" $SERVER
|
|
||||||
fi
|
|
||||||
done
|
|
||||||
done
|
|
||||||
|
|
||||||
echo "$1/$LIVEKITNAME"
|
|
||||||
}
|
|
||||||
|
|
||||||
# Find LIVEKIT data by mounting all devices
|
|
||||||
# If found, keep mounted, else unmount
|
|
||||||
# $1 = data directory target (mount here)
|
|
||||||
# $2 = data directory which contains compressed bundles
|
|
||||||
#
|
|
||||||
find_data_try()
|
|
||||||
{
|
|
||||||
debug_log "find_data_try" "$*"
|
|
||||||
|
|
||||||
local DEVICE FS FROM OPTIONS
|
|
||||||
|
|
||||||
mkdir -p "$1"
|
|
||||||
blkid | sort | cut -d: -f 1 | grep -E -v "/loop|/ram|/zram" | while read DEVICE; do
|
|
||||||
FROM="$2"
|
|
||||||
FS="$(device_bestfs "$DEVICE")"
|
|
||||||
OPTIONS="$(fs_options $FS)"
|
|
||||||
mount -r "$DEVICE" "$1" $FS $OPTIONS 2>/dev/null
|
|
||||||
|
|
||||||
# if the FROM parameter is actual file, mount it again as loop (eg. iso)
|
|
||||||
if [ -f "$1/$FROM" ]; then
|
|
||||||
mount -o remount,rw "$DEVICE" "$1" 2>/dev/null
|
|
||||||
mkdir -p "$1/../file"
|
|
||||||
mount -o loop,ro "$1/$FROM" "$1/../file" 2>/dev/null
|
|
||||||
FROM="../file/$LIVEKITNAME"
|
|
||||||
fi
|
|
||||||
|
|
||||||
# search for bundles in the mounted directory
|
|
||||||
if [ "$(find "$1/$FROM" -maxdepth 1 -name "*.$BEXT" 2>/dev/null)" != "" ]; then
|
|
||||||
# we found at least one bundle/module here
|
|
||||||
mount -o remount,rw "$DEVICE" "$1" 2>/dev/null
|
|
||||||
echo "$1/$FROM" | tr -s "/" | sed -r "s:/[^/]+/[.][.]/:/:g"
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
|
|
||||||
# unmount twice, since there could be mounted ISO as loop too. If not, it doesn't hurt
|
|
||||||
umount "$1" 2>/dev/null
|
|
||||||
umount "$1" 2>/dev/null
|
|
||||||
done
|
|
||||||
}
|
|
||||||
|
|
||||||
# Retry finding LIVEKIT data several times,
|
|
||||||
# until timeouted or until data is found
|
|
||||||
# $1 = timeout
|
|
||||||
# $2 = data directory target (mount here)
|
|
||||||
#
|
|
||||||
find_data()
|
|
||||||
{
|
|
||||||
debug_log "find_data" "$*"
|
|
||||||
|
|
||||||
local DATA FROM
|
|
||||||
|
|
||||||
if [ "$(cmdline_value ip)" != "" ]; then
|
|
||||||
download_data_pxe "$2"
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
|
|
||||||
FROM="$(cmdline_value from)"
|
|
||||||
if [ "$FROM" = "" ]; then FROM="$LIVEKITNAME"; fi
|
|
||||||
echo_livekit >&2
|
|
||||||
echo "Looking for $LIVEKITNAME data in /$FROM .." | tr -s "/" >&2
|
|
||||||
for timeout in $(seq 1 $1); do
|
|
||||||
echo -n "." >&2
|
|
||||||
refresh_devs
|
|
||||||
DATA="$(find_data_try "$2" "$FROM")"
|
|
||||||
|
|
||||||
# This "was" a bug!
|
|
||||||
echo "" >&2
|
|
||||||
|
|
||||||
if [ "$DATA" != "" ]; then
|
|
||||||
echo_livekit_msg "$LIVEKITNAME data found on $(mounted_device "$2")" >&2
|
|
||||||
echo "$DATA"
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
sleep 1
|
|
||||||
done
|
|
||||||
echo "" >&2
|
|
||||||
|
|
||||||
if [ "$DATA" = "" ]; then
|
|
||||||
fatal "$LIVEKITNAME data not found"
|
|
||||||
fi
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
# Activate persistent changes
|
|
||||||
# $1 = data directory
|
|
||||||
# $2 = target changes directory
|
|
||||||
#
|
|
||||||
persistent_changes()
|
|
||||||
{
|
|
||||||
debug_log "persistent_changes" "$*"
|
|
||||||
|
|
||||||
local CHANGES T1 T2
|
|
||||||
|
|
||||||
CHANGES="$1/$(basename "$2")"
|
|
||||||
T1="$CHANGES/.perch-test.dat"
|
|
||||||
T2="${T1}-clone.dat"
|
|
||||||
|
|
||||||
# Setup the directory anyway, it will be used in all cases
|
|
||||||
mkdir -p "$2"
|
|
||||||
|
|
||||||
# If persistent changes are not requested, end here
|
|
||||||
if grep -vq 'perch' /proc/cmdline; then
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
|
|
||||||
# check if changes directory exists and is writable
|
|
||||||
touch "$T1" 2>/dev/null && rm -f "$T1" 2>/dev/null
|
|
||||||
|
|
||||||
# if not, simply return back
|
|
||||||
if [ $? -ne 0 ]; then
|
|
||||||
echo_warn "Persistent changes not writable or not used."
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
echo_livekit_msg "Testing persistent changes for POSIX compatibility..." >&2
|
|
||||||
touch "$T1" && ln -sf "$T1" "$T2" 2>/dev/null && \
|
|
||||||
chmod +x "$T1" 2>/dev/null && test -x "$T1" && \
|
|
||||||
chmod -x "$T1" 2>/dev/null && test ! -x "$T1" && \
|
|
||||||
rm "$T1" "$T2" 2>/dev/null
|
|
||||||
|
|
||||||
if [ $? -ne 0 ]; then
|
|
||||||
echo_warn "File system is not POSIX-compatible!" >&2
|
|
||||||
echo_livekit_msg "Activating DynFileFS persistent changes..." >&2
|
|
||||||
rm "$T1" "$T2" 2>/dev/null
|
|
||||||
|
|
||||||
mount.dynfilefs "$CHANGES/changes.dat" 4000 "$2"
|
|
||||||
if [ "$(device_bestfs "$2/loop.fs" | tr -d " ")" = "-t" ]; then
|
|
||||||
mke2fs -F "$2/loop.fs" >/dev/null
|
|
||||||
fi
|
|
||||||
mount -o loop,sync "$2/loop.fs" "$2"
|
|
||||||
rmdir "$2/lost+found" 2>/dev/null
|
|
||||||
else
|
|
||||||
echo_livekit_msg "Activating native persistent changes..." >&2
|
|
||||||
mount --bind "$CHANGES" "$2"
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
# Copy content of rootcopy directory to union
|
|
||||||
# $1 = data directory
|
|
||||||
# $2 = union directory
|
|
||||||
copy_rootcopy_content()
|
|
||||||
{
|
|
||||||
debug_log "copy_rootcopy_content" "$*"
|
|
||||||
|
|
||||||
if [ "$(ls -1 "$1/rootcopy/" 2>/dev/null)" != "" ]; then
|
|
||||||
echo_livekit
|
|
||||||
echo "Copying content of rootcopy directory..."
|
|
||||||
cp -a "$1"/rootcopy/* "$2"
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
# Copy data to RAM if requested
|
|
||||||
# $1 = live data directory
|
|
||||||
# $2 = changes directory
|
|
||||||
#
|
|
||||||
copy_to_ram()
|
|
||||||
{
|
|
||||||
debug_log "copy_to_ram" "$*"
|
|
||||||
|
|
||||||
local MDIR MDEV RAM CHANGES
|
|
||||||
|
|
||||||
if grep -vq 'copy2ram' /proc/cmdline; then
|
|
||||||
echo "$1"
|
|
||||||
return
|
|
||||||
fi
|
|
||||||
|
|
||||||
echo_livekit_msg "Copying $LIVEKITNAME data to RAM..." >&2
|
|
||||||
RAM="$(dirname "$2")"/copy_to_ram
|
|
||||||
mkdir -p "$RAM"
|
|
||||||
cp -a "$1"/* "$RAM"
|
|
||||||
echo "$RAM"
|
|
||||||
|
|
||||||
MDIR="$(mounted_dir "$1")"
|
|
||||||
MDEV="$(mounted_device "$1")"
|
|
||||||
MDEV="$(losetup $MDEV 2>/dev/null | cut -d " " -f 3)"
|
|
||||||
umount "$MDIR" 2>/dev/null
|
|
||||||
|
|
||||||
if [ "$MDEV" ]; then # iso was mounted here, try to unmount the FS it resides on too
|
|
||||||
MDEV="$(mounted_device "$MDEV")"
|
|
||||||
umount "$MDEV" 2>/dev/null
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
# load filter
|
|
||||||
#
|
|
||||||
filter_load()
|
|
||||||
{
|
|
||||||
local FILTER
|
|
||||||
FILTER=$(cmdline_value load)
|
|
||||||
if [ "$FILTER" = "" ]; then
|
|
||||||
cat -
|
|
||||||
else
|
|
||||||
cat - | egrep "$FILTER"
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
# noload filter
|
|
||||||
#
|
|
||||||
filter_noload()
|
|
||||||
{
|
|
||||||
local FILTER
|
|
||||||
FILTER=$(cmdline_value noload)
|
|
||||||
if [ "$FILTER" = "" ]; then
|
|
||||||
cat -
|
|
||||||
else
|
|
||||||
cat - | egrep -v "$FILTER"
|
|
||||||
fi
|
|
||||||
}
|
|
||||||
|
|
||||||
# sort modules by number even if they are in subdirectory
|
|
||||||
#
|
|
||||||
sortmod()
|
|
||||||
{
|
|
||||||
cat - | sed -r "s,(.*/(.*)),\\2:\\1," | sort -n | cut -d : -f 2-
|
|
||||||
}
|
|
||||||
|
|
||||||
# Mount squashfs filesystem bundles
|
|
||||||
# and add them to union
|
|
||||||
# $1 = directory where to search for bundles
|
|
||||||
# $2 = directory where to mount bundles
|
|
||||||
# $3 = directory where union is mounted
|
|
||||||
#
|
|
||||||
union_append_bundles()
|
|
||||||
{
|
|
||||||
debug_log "union_append_bundles" "$*"
|
|
||||||
|
|
||||||
local BUN
|
|
||||||
|
|
||||||
echo_livekit >&2
|
|
||||||
echo "Appending bundles to union..." >&2
|
|
||||||
|
|
||||||
# Just tell me why! Why be compact?!?
|
|
||||||
( ls -1 "$1" | sort -n ; cd "$1" ; find modules/ 2>/dev/null | \
|
|
||||||
sortmod | filter_load) | grep '[.]'$BEXT'$' |\
|
|
||||||
filter_noload | \
|
|
||||||
while read BUNDLE; do
|
|
||||||
echo_livekit_msg "Appending: $BUNDLE" >&2
|
|
||||||
|
|
||||||
BUN="$(basename "$BUNDLE")"
|
|
||||||
mkdir -p "$2/$BUN"
|
|
||||||
|
|
||||||
# It now depends on your kernel!
|
|
||||||
mount -o loop -t squashfs "$1/$BUNDLE" "$2/$BUN"
|
|
||||||
mount -o remount,add:1:"$2/$BUN" aufs "$3"
|
|
||||||
done
|
|
||||||
}
|
|
||||||
|
|
||||||
# Create empty fstab properly
|
|
||||||
# $1 = root directory
|
|
||||||
#
|
|
||||||
fstab_create()
|
|
||||||
{
|
|
||||||
debug_log "fstab_create" "$*"
|
|
||||||
|
|
||||||
local FSTAB
|
|
||||||
FSTAB="$1/etc/fstab"
|
|
||||||
echo aufs / aufs defaults 0 0 > $FSTAB
|
|
||||||
echo proc /proc proc defaults 0 0 >> $FSTAB
|
|
||||||
echo sysfs /sys sysfs defaults 0 0 >> $FSTAB
|
|
||||||
echo devpts /dev/pts devpts gid=5,mode=620 0 0 >> $FSTAB
|
|
||||||
echo tmpfs /dev/shm tmpfs defaults 0 0 >> $FSTAB
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
# Change root and execute init
|
|
||||||
# $1 = where to change root
|
|
||||||
#
|
|
||||||
change_root()
|
|
||||||
{
|
|
||||||
debug_log "change_root" "$*"
|
|
||||||
echo_livekit_msg "Changing root..." >&2
|
|
||||||
umount /proc
|
|
||||||
umount /sys
|
|
||||||
|
|
||||||
cd "$1"
|
|
||||||
|
|
||||||
# make sure important device files and directories are in union
|
|
||||||
mkdir -p boot dev proc sys tmp mnt run
|
|
||||||
chmod 1777 tmp
|
|
||||||
if [ ! -e dev/console ]; then mknod dev/console c 5 1; fi
|
|
||||||
if [ ! -e dev/tty ]; then mknod dev/tty c 5 0; fi
|
|
||||||
if [ ! -e dev/tty0 ]; then mknod dev/tty0 c 4 0; fi
|
|
||||||
if [ ! -e dev/tty1 ]; then mknod dev/tty1 c 4 1; fi
|
|
||||||
if [ ! -e dev/null ]; then mknod dev/null c 1 3; fi
|
|
||||||
if [ ! -e sbin/fsck.aufs ]; then ln -s /bin/true sbin/fsck.aufs; fi
|
|
||||||
|
|
||||||
# find chroot and init
|
|
||||||
if [ -x bin/chroot -o -L bin/chroot ]; then CHROOT=bin/chroot; fi
|
|
||||||
if [ -x sbin/chroot -o -L sbin/chroot ]; then CHROOT=sbin/chroot; fi
|
|
||||||
if [ -x usr/bin/chroot -o -L usr/bin/chroot ]; then CHROOT=usr/bin/chroot; fi
|
|
||||||
if [ -x usr/sbin/chroot -o -L usr/sbin/chroot ]; then CHROOT=usr/sbin/chroot; fi
|
|
||||||
if [ "$CHROOT" = "" ]; then fatal "chroot: Executable not found!"; fi
|
|
||||||
|
|
||||||
if [ -x bin/init -o -L bin/init ]; then INIT=bin/init; fi
|
|
||||||
if [ -x sbin/init -o -L sbin/init ]; then INIT=sbin/init; fi
|
|
||||||
if [ "$INIT" = "" ]; then fatal "init: Executable not found!"; fi
|
|
||||||
|
|
||||||
mkdir -p mnt/live
|
|
||||||
mount -n -o remount,ro aufs .
|
|
||||||
pivot_root . mnt/live
|
|
||||||
exec $CHROOT . $INIT < dev/console > dev/console 2>&1
|
|
||||||
}
|
|
||||||
Loading…
Reference in New Issue