boot parameter from=
Tomas M
parent
6293bfd657
commit
e2899cd825
54
livekitlib
54
livekitlib
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@ -85,6 +85,14 @@ fatal()
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setsid sh -c 'exec sh < /dev/tty1 >/dev/tty1 2>&1'
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}
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# get value of commandline 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:]])$1=[^[:space:]]+" | tr -d " " | cut -d "=" -f 2- | tail -n 1
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}
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# test if the script is started by root user. If not, exit
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#
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@ -131,7 +139,7 @@ transfer_initramfs()
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#
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init_proc_sysfs()
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{
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debug_log "vfs_mount_init"
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debug_log "init_proc_sysfs" "$*"
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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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@ -142,6 +150,7 @@ init_proc_sysfs()
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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" "$*"
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echo /sbin/mdev > /proc/sys/kernel/hotplug
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mdev -s
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modprobe zram 2>/dev/null
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@ -156,7 +165,7 @@ init_devs()
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#
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init_zram()
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{
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debug_log "init_zram"
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debug_log "init_zram" "$*"
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echo_green_star
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echo "Setting dynamic RAM compression using ZRAM"
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echo 536870912 > /sys/block/zram0/disksize # 512MB
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@ -169,7 +178,7 @@ init_zram()
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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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debug_log "init_aufs" "$*"
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# TODO maybe check here if aufs support is working at all
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# and procude useful error message if user has no aufs
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modprobe aufs 2>/dev/null
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@ -181,7 +190,7 @@ init_aufs()
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#
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init_union()
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{
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debug_log "init_union"
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debug_log "init_union" "$*"
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echo_green_star
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echo "Setting up union using AUFS 3"
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@ -195,7 +204,7 @@ init_union()
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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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debug_log "mounted_device" "$*"
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local MNT TARGET
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MNT="$1"
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@ -215,7 +224,7 @@ mounted_device()
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#
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device_bestfs()
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{
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debug_log "device_bestfs"
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debug_log "device_bestfs" "$*"
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local FS
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FS="$(blkid "$1" | sed -r "s/.*TYPE=//" | tr -d '"' | tr [A-Z] [a-z])"
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@ -232,6 +241,8 @@ device_bestfs()
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#
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fs_options()
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{
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debug_log "fs_options" "$*"
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if [ "$1" = "-t" ]; then
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shift
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fi
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@ -243,13 +254,15 @@ fs_options()
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fi
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}
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# Find LIVEKIT data by mounting all devices
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# If found, keep mounted, else unmount
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# $1 = data directory target (mount here)
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# $2 = data directory which contains compressed bundles
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#
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find_data_try()
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{
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debug_log "find_data_try"
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debug_log "find_data_try" "$*"
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local DEVICE FS MNT OPTIONS
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@ -258,10 +271,10 @@ find_data_try()
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FS="$(device_bestfs "$DEVICE")"
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OPTIONS="$(fs_options $FS)"
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mount -r "$DEVICE" "$1" $FS $OPTIONS 2>/dev/null
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if [ "$(find "$1/$LIVEKITNAME" -maxdepth 1 -name "*.$BEXT" 2>/dev/null)" != "" ]; then
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if [ "$(find "$1/$2" -maxdepth 1 -name "*.$BEXT" 2>/dev/null)" != "" ]; then
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# we found at least one bundle/module here
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mount -o remount,rw "$DEVICE" "$1" 2>/dev/null
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echo "$1/$LIVEKITNAME"
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echo "$1/$2" | tr -s "/"
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return
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fi
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umount "$1" 2>/dev/null
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@ -275,18 +288,21 @@ find_data_try()
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#
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find_data()
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{
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debug_log "find_data"
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debug_log "find_data" "$*"
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local DATA
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local DATA FROM
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FROM="$(cmdline_value from)"
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if [ "$FROM" = "" ]; then FROM="$LIVEKITNAME"; fi
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echo_green_star >&2
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echo -n "Looking for $LIVEKITNAME data .." >&2
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echo -n "Looking for $LIVEKITNAME data in /$FROM/ .." | tr -s "/" >&2
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for timeout in $(seq 1 $1); do
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echo -n "." >&2
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DATA="$(find_data_try "$2")"
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DATA="$(find_data_try "$2" "$FROM")"
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if [ "$DATA" != "" ]; then
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echo "" >&2
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echo "* Found in $(mounted_device "$DATA" | cut -d : -f 1)" >&2
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echo "* Found on $(mounted_device "$DATA" | cut -d : -f 1)" >&2
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echo "$DATA"
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return
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fi
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@ -306,6 +322,8 @@ find_data()
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#
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persistent_changes()
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{
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debug_log "persistent_changes" "$*"
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local CHANGES T1 T2
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CHANGES="$1/$(basename "$2")"
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@ -358,6 +376,8 @@ persistent_changes()
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#
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copy_to_ram()
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{
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debug_log "copy_to_ram" "$*"
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local DM RAM CHANGES
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if grep -vq toram /proc/cmdline; then
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@ -392,7 +412,7 @@ copy_to_ram()
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#
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union_append_bundles()
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{
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debug_log "union_append_bundles"
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debug_log "union_append_bundles" "$*"
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echo_green_star
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echo "Adding bundles to union"
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ls -1 "$1" | grep '.'$BEXT'$' | sort | while read BUNDLE; do
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@ -408,6 +428,8 @@ union_append_bundles()
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#
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fstab_create()
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{
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debug_log "fstab_create" "$*"
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local FSTAB
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FSTAB="$1/etc/fstab"
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echo aufs / aufs defaults 0 0 > $FSTAB
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@ -423,6 +445,8 @@ fstab_create()
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#
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change_root()
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{
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debug_log "change_root" "$*"
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umount /proc
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umount /sys
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rm -Rf /lib/modules # this will no longer be needed at all
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Loading…
Reference in New Issue