slitaz-boot-scripts annotate init @ rev 317

init: fix cdromless case
author Pascal Bellard <pascal.bellard@slitaz.org>
date Mon Aug 27 11:52:56 2012 +0200 (2012-08-27)
parents 11c525ec4906
children a4e4a4784e45
rev   line source
pascal@276 1 #!/bin/sh
pascal@276 2
pascal@314 3 fail()
pascal@278 4 {
pascal@314 5 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
pascal@278 6 }
pascal@278 7
pascal@314 8 quit()
pascal@276 9 {
pascal@314 10 [ -d /mnt$4/etc ] || return
pascal@315 11 [ -n "$4" ] || mount /mnt -o remount,ro
pascal@314 12 mount --move /run /mnt/${1:-run}
pascal@314 13 cat>/run/init<<EOT
pascal@314 14 $2
pascal@314 15 x=/sbin/switch_root
pascal@314 16 [ -x \$x ] && exec \$x mnt $3 /sbin/init
pascal@276 17 EOT
pascal@314 18 fail 2mDone
pascal@314 19 exit
pascal@276 20 }
pascal@276 21
pascal@314 22 arg()
pascal@276 23 {
pascal@314 24 grep -q $1 /proc/cmdline
pascal@276 25 }
pascal@276 26
pascal@314 27 got()
pascal@276 28 {
pascal@314 29 arg $1= && root="$(sed "s/.*$1=\([^ ]*\).*/\1/" </proc/cmdline)"
pascal@276 30 }
pascal@276 31
pascal@314 32 msg()
pascal@276 33 {
pascal@317 34 echo "Switching / to $1..."
pascal@276 35 }
pascal@276 36
pascal@314 37 use()
pascal@276 38 {
pascal@315 39 got $1 && msg "$1 $root"
pascal@276 40 }
pascal@276 41
pascal@314 42 mnt()
pascal@276 43 {
pascal@314 44 r=${root#/dev/}
pascal@314 45 r=/dev/${r%%/*}
pascal@314 46 d=${root#*$r}
pascal@314 47 mount $r $1 && return
pascal@314 48 w=$(cat /sys/module/usb_storage/parameters/delay_use)
pascal@314 49 w=$((1+${w:-2}))
pascal@314 50 echo -n "Sleep $w seconds..."
pascal@314 51 sleep $w
pascal@314 52 mount $r $1
pascal@314 53 }
pascal@314 54
pascal@314 55 mod()
pascal@314 56 {
pascal@314 57 modprobe $1 2>/dev/null || insmod $(find /lib/modules|sed "/$1.ko/!dq")
pascal@314 58 }
pascal@314 59
pascal@314 60 tryinit()
pascal@314 61 {
pascal@314 62 if [ ! -d /mnt/etc ] && got cryptoroot
pascal@314 63 then mod dm-mod
pascal@314 64 mod dm-crypt
pascal@314 65 mod aes-i586
pascal@314 66 d=${root#/dev/}
pascal@314 67 l=crypto-$d
pascal@314 68 if cryptsetup isLuks $root 2>/dev/null; then
pascal@314 69 cryptsetup luksOpen $root $l
pascal@314 70 else
pascal@314 71 read -st 60 -p "Pass phrase : " p
pascal@314 72 k=$(echo $p|hashalot -x -n 32 sha512)
pascal@314 73 echo 0 $(cat $(find /sys/block|grep /$d/size))\
pascal@314 74 crypt aes-plain $k 0 $root 0|dmsetup create $l
pascal@314 75 fi
pascal@314 76 mount /dev/mapper/$l /mnt
pascal@314 77 fi
pascal@314 78 got subroot && return
pascal@314 79 got loopfs && return
pascal@314 80 if [ -d /mnt/etc ]
pascal@314 81 then for i in $@; do cp -a $i /mnt$(dirname $i); done
pascal@314 82 quit
pascal@314 83 fi
pascal@314 84 fail
pascal@314 85 }
pascal@314 86
pascal@314 87 trylvm()
pascal@314 88 {
pascal@314 89 use lvmroot || return
pascal@314 90 mod dm-mod
pascal@314 91 vgscan --ignorelockingfailure
pascal@314 92 vgchange -ay --ignorelockingfailure
pascal@314 93 mount /dev/mapper/$root /mnt
pascal@314 94 tryinit /dev/mapper $1
pascal@314 95 }
pascal@314 96
pascal@314 97 ldraid()
pascal@314 98 {
pascal@314 99 while read l
pascal@314 100 do case "$l" in
pascal@314 101 *raid10*) mod raid10;;
pascal@314 102 *raid0*) mod raid0;;
pascal@314 103 *raid1*) mod raid1;;
pascal@314 104 *raid*) mod raid456;;
pascal@314 105 *mirror*) mod dm-mirror
pascal@314 106 esac
pascal@276 107 done
pascal@276 108 }
pascal@276 109
pascal@314 110 if [ "$1" != "log" ]
pascal@314 111 then mount -t proc proc /proc
pascal@314 112 mount -t sysfs sys /sys
pascal@310 113 mount -t tmpfs tmpfs /run
pascal@314 114 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
pascal@314 115 $0 log 2>&1 | tee /run/boot.log
pascal@314 116 umount /proc
pascal@314 117 umount /sys
pascal@310 118 . /run/init
pascal@314 119 sh
pascal@314 120 fi
pascal@317 121 ln -s $(sed '/name/!ds/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
pascal@314 122 if use dmraid
pascal@314 123 then dmraid -s|sed '/^type/!ds/.*: *//'|ldraid
pascal@314 124 [ ${root:0:4} = /dev ] ||
pascal@314 125 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
pascal@314 126 dmraid -ay
pascal@314 127 fi
pascal@314 128 if use softraid
pascal@314 129 then mdadm -E -s -c partitions>/etc/mdadm.conf
pascal@314 130 grep -qs " $root " /etc/mdadm.conf ||
pascal@314 131 root=$(awk '/dev.md/{print $2;exit}'</etc/mdadm.conf)
pascal@314 132 grep level=raid /etc/mdadm.conf|ldraid
pascal@314 133 for i in 1 2 3 4 5 6 7 8 9
pascal@314 134 do sleep $i
pascal@314 135 mdadm -A -s
pascal@314 136 grep -qs ': act' /proc/mdstat && break
pascal@314 137 done
pascal@314 138 trylvm /etc/mdadm.conf
pascal@314 139 fi
pascal@314 140 trylvm
pascal@314 141 if got mount
pascal@314 142 then dev=$root
pascal@315 143 x=$(blkid|grep $dev|sed 's/:.*//;q')
pascal@315 144 root=${x:-$dev}
pascal@314 145 [ "$dev" = "$root" ] || dev="$root ($dev)"
pascal@314 146 echo "Mount $dev..."
pascal@314 147 mnt /mnt
pascal@314 148 arg posixovl && echo "And posixovl..." && mount.posixovl /mnt
pascal@314 149 fi
pascal@314 150 got loopfs && echo "Into file $root..." &&
pascal@314 151 losetup /dev/loop0 /mnt/$root && mount /dev/loop0 /mnt
pascal@317 152 got bindfs && echo "Bind ${root/,/ to }..." &&
pascal@314 153 mount --bind /mnt/${root%,*} /mnt/${root/,//}
pascal@314 154 arg cryptoroot= && tryinit
pascal@314 155 if use subroot
pascal@314 156 then cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
pascal@314 157 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
pascal@314 158 r=$root/run
pascal@314 159 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
pascal@315 160 "$root$(ls /run/ld-*) $r/chroot $root" "/$root"
pascal@314 161 fi
pascal@314 162 msg tmpfs
pascal@314 163 root=100
pascal@314 164 got tmpram
pascal@314 165 r=$root
pascal@314 166 root=90%
pascal@314 167 got rootfssize
pascal@314 168 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
pascal@314 169 mount -t tmpfs -o size=$root tmpfs /mnt &&
pascal@314 170 for i in $(ls -ar /)
pascal@314 171 do case "$i" in
pascal@317 172 .*|cdrom) ;;
pascal@314 173 mnt|proc|sys) mkdir /mnt/$i;;
pascal@314 174 usr|var|rootfs*) mv /$i /mnt;;
pascal@314 175 *) cp -a /$i /mnt 2>/dev/null && continue
pascal@314 176 fail
pascal@314 177 umount /mnt
pascal@314 178 exit
pascal@276 179 esac
pascal@314 180 done || fail 3mSkipped
pascal@314 181 quit
pascal@314 182 msg aufs
pascal@314 183 br=/mnt/.rw
pascal@314 184 mkdir $br
pascal@314 185 got rwdev && mnt $br && br=$br$d
pascal@314 186 o=
pascal@314 187 p=
pascal@314 188 c=/mnt/.cdrom
pascal@314 189 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]
pascal@314 190 then root=cdrom
pascal@314 191 got rodev
pascal@314 192 mkdir -p $c /mnt$c /mnt/.rw$c
pascal@314 193 mnt $c
pascal@314 194 o="-o 124"
pascal@314 195 p=/.cdrom/boot
pascal@314 196 d=/fs
pascal@314 197 got rodir && c=$c$root
pascal@276 198 fi
pascal@314 199 l=0
pascal@314 200 mod squashfs
pascal@314 201 r=
pascal@314 202 got isofs || for i in /mnt$p/rootfs?*.gz
pascal@314 203 do fs=${i#*root}
pascal@314 204 r=$r:/mnt/.$fs
pascal@314 205 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
pascal@314 206 losetup $o /dev/loop$l $i
pascal@314 207 mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
pascal@276 208 done
pascal@314 209 mod aufs
pascal@314 210 mount -t aufs -o br=$br${r:-:$c} none /mnt
pascal@314 211 quit