wok-6.x annotate busybox/stuff/init @ rev 5978

busybox: add lvm support in /init
author Pascal Bellard <pascal.bellard@slitaz.org>
date Thu Aug 12 18:56:16 2010 +0200 (2010-08-12)
parents c5efd45ce56e
children 3f326721653c
rev   line source
pascal@1703 1 #!/bin/sh
pascal@1703 2
pascal@4545 3 launch_init()
pascal@4545 4 {
pascal@4545 5 echo -e "\\033[70G[ \\033[1;33mOK\\033[0;39m ]"
pascal@4545 6 exec /sbin/switch_root mnt /sbin/init
pascal@4545 7 }
pascal@4545 8
pascal@5978 9 failed()
pascal@5978 10 {
pascal@5978 11 echo -e "\\033[70G[ \\033[1;31mFailed\\033[0;39m ]"
pascal@5978 12 }
pascal@5978 13
pascal@4545 14 try_init()
pascal@4545 15 {
pascal@4545 16 if [ ! -d /mnt/etc ] && grep -q cryptoroot= /proc/cmdline; then
pascal@4545 17 modprobe dm-mod
pascal@4545 18 modprobe dm-crypt
pascal@4545 19 modprobe aes-i586
pascal@4545 20 root="$(sed 's/.*cryptoroot=\([^ ]*\).*/\1/' < /proc/cmdline)"
pascal@4545 21 dev=${root#/dev/}
pascal@4545 22 dmlabel=crypto-$dev
pascal@4545 23 if cryptsetup isLuks $root 2> /dev/null; then
pascal@4545 24 cryptsetup luksOpen $root $dmlabel
pascal@4545 25 else
pascal@4545 26 read -s -t 60 -p "Pass phrase : " passphrase
pascal@4545 27 key=$(echo $passphrase | hashalot -x -n 32 sha512)
pascal@4545 28 blocks=$(cat $(find /sys/block | grep /$dev/size))
pascal@4545 29 echo 0 $blocks crypt aes-plain $key 0 $root 0 | \
pascal@4545 30 dmsetup create $dmlabel
pascal@4545 31 fi
pascal@4545 32 mount /dev/mapper/$dmlabel /mnt
pascal@4545 33 fi
pascal@4545 34 if [ -d /mnt/etc ]; then
pascal@4545 35 umount /sys
pascal@4545 36 [ -n "$1" ] && for i in $@ ; do
pascal@4545 37 cp -a $i /mnt$i
pascal@4545 38 done
pascal@4545 39 umount /proc
pascal@4545 40 launch_init
pascal@4545 41 fi
pascal@5978 42 failed
pascal@4545 43 }
pascal@4545 44
pascal@4469 45 mount_mapper()
pascal@4469 46 {
pascal@4469 47 mount $root /mnt
pascal@4545 48 try_init /dev/mapper $@
pascal@4469 49 }
pascal@4469 50
pascal@5978 51 lvmsetup()
pascal@5978 52 {
pascal@5978 53 if grep -q lvmroot= /proc/cmdline; then
pascal@5978 54 modprobe dm-mod
pascal@5978 55 vgscan --ignorelockingfailure
pascal@5978 56 vgchange -ay --ignorelockingfailure
pascal@5978 57 root="/dev/mapper/$(sed 's/.*lvmroot=\([^ ]*\).*/\1/' < /proc/cmdline)"
pascal@5978 58 return 0
pascal@5978 59 fi
pascal@5978 60 return 1
pascal@5978 61 }
pascal@5978 62
pascal@5978 63 load_raid()
pascal@5978 64 {
pascal@5978 65 while read line; do
pascal@5978 66 case "$line" in
pascal@5978 67 *raid1*) modprobe dm-mirror ;;
pascal@5978 68 *raid[456]*) modprobe raid456 ;;
pascal@5978 69 esac
pascal@5978 70 done
pascal@5978 71 }
pascal@5978 72
pascal@4469 73 mount -t proc proc /proc
pascal@4469 74 mount -t sysfs sysfs /sys
pascal@4469 75 if grep -q dmraid= /proc/cmdline; then
pascal@4469 76 root="$(sed 's/.*dmraid=\([^ ]*\).*/\1/' < /proc/cmdline)"
pascal@4469 77 echo -n "Switching / to dmraid $root..."
pascal@5978 78 dmraid -s | grep ^type | awk '{ print $3 }' | load_raid
pascal@4469 79 case "$root" in
pascal@4469 80 /dev/*);;
pascal@5978 81 *) root=/dev/mapper/$(dmraid -s|grep ^name|awk '{print $3}')p${root#p};;
pascal@4469 82 esac
pascal@4469 83 dmraid -ay
pascal@5978 84 lvmsetup
pascal@4469 85 mount_mapper
pascal@4545 86 fi
pascal@4545 87 if grep -q softraid= /proc/cmdline; then
pascal@4469 88 root="$(sed 's/.*softraid=\([^ ]*\).*/\1/' < /proc/cmdline)"
pascal@4469 89 echo -n "Switching / to softraid $root..."
pascal@4469 90 mdadm --examine --scan --config=partitions > /etc/mdadm.conf
pascal@5978 91 grep level=raid /etc/mdadm.conf | load_raid
pascal@4469 92 mdadm --assemble --scan
pascal@5978 93 lvmsetup
pascal@4469 94 mount_mapper /etc/mdadm.conf
pascal@4469 95 fi
pascal@5978 96 if lvmsetup; then
pascal@5978 97 echo -n "Switching / to lvm $root..."
pascal@5978 98 mount_mapper
pascal@5978 99 fi
pascal@4545 100 if grep -q loopfs= /proc/cmdline; then
pascal@4545 101 loopfs="$(sed 's/.*loopfs=\([^ ]*\).*/\1/' < /proc/cmdline)"
pascal@4545 102 dev=${loopfs%,*}
pascal@4545 103 loopfs=${loopfs#*,}
pascal@4545 104 echo -n "Switching / to loop $loopfs on $dev..."
pascal@4545 105 if ! mount $dev /mnt; then
pascal@4545 106 if echo $dev | grep -q "/dev/sd"; then
pascal@4545 107 delay=`cat /sys/module/usb_storage/parameters/delay_use`
pascal@4545 108 delay=$((1+$delay))
pascal@4545 109 echo -n "sleep for $delay seconds..."
pascal@4545 110 sleep $delay
pascal@4545 111 fi
pascal@4545 112 mount $dev /mnt || loopfs=""
pascal@4545 113 fi
pascal@4545 114 if [ -n "$loopfs" ]; then
pascal@4545 115 losetup /dev/loop0 /mnt/$loopfs
pascal@4545 116 mount /dev/loop0 /mnt 2> /dev/null
pascal@4545 117 fi
pascal@4545 118 try_init
pascal@4545 119 fi
pascal@4545 120 grep -q cryptoroot= /proc/cmdline && try_init
pascal@4469 121 umount /sys
pascal@2397 122 echo -n "Switching / to tmpfs..."
pascal@1704 123 size="$(grep rootfssize= < /proc/cmdline | \
pascal@1704 124 sed 's/.*rootfssize=\([0-9]*[kmg%]\).*/-o size=\1/')"
pascal@1772 125 free=$(busybox free | busybox awk '/Mem:/ { print int(($4*100)/$3) }')
pascal@1704 126 umount /proc
pascal@1775 127 [ -n "$size" ] || size="-o size=90%"
pascal@1772 128 if [ $free -lt 100 ] || ! mount -t tmpfs $size tmpfs /mnt; then
pascal@1772 129 echo -e "\\033[70G[ \\033[1;33mSkipped\\033[0;39m]"
pascal@1772 130 exec /sbin/init
pascal@1772 131 fi
pascal@1704 132 for i in $(ls -a /); do
pascal@1704 133 case "$i" in
pascal@1705 134 .|..) ;;
pascal@1704 135 mnt) mkdir /mnt/mnt;;
pascal@1704 136 *) if ! cp -a /$i /mnt 2> /dev/null; then
pascal@5978 137 failed
pascal@1704 138 umount /mnt
pascal@1704 139 exec /sbin/init
pascal@1704 140 fi;;
pascal@1704 141 esac
pascal@1704 142 done
pascal@4545 143 launch_init