src/initrd-recovery/init

   1 #!/bin/sh
   2
   3 export PATH=/usr/bin:/bin:/usr/sbin:/sbin
   4
   5 FAKE_ROOT=/system
   6 FAKE_ROOT_RO=/system-ro
   7 INFORM_PATH=/mnt/inform
   8
   9 STATUS_DIR=${FAKE_ROOT}/opt/data/recovery
  10 STATUS_FILE=${STATUS_DIR}/RW.STATUS
  11 DELTA_PATH_FILE=${STATUS_DIR}/DELTA.PATH
  12
  13 SYNC="/bin/sync"
  14 MKDIR="/bin/mkdir"
  15 MOUNT="/bin/mount"
  16 UMOUNT="/bin/umount"
  17 REBOOT="/sbin/reboot"
  18 BLKID="/usr/sbin/blkid"
  19
  20 #------------------------------------------------
  21 #       mount_partitions
  22 #------------------------------------------------
  23 mount_partitions() {
  24     "$MOUNT" -t proc none /proc
  25     "$MOUNT" -t sysfs none /sys
  26     "$MOUNT" -t smackfs smackfs /smack
  27     "$MOUNT" -t tmpfs tmpfs /run -o rw,nosuid,nodev,mode=755
  28     "$MOUNT" -t tmpfs tmpfs /tmp -o mode=1777,smackfsroot=*
  29
  30     "$MKDIR" /dev/pts
  31     "$MOUNT" -t devpts devpts /dev/pts
  32 }
  33
  34 #------------------------------------------------
  35 #       mount_inform
  36 #------------------------------------------------
  37 mount_inform() {
  38     PART_INFORM=$("$BLKID" -L "inform" -o device)
  39     if [ "z$PART_INFORM" != "z" ]; then
  40         "$MKDIR" -p ${INFORM_PATH}
  41         "$MOUNT" -t ext4 ${PART_INFORM} ${INFORM_PATH}
  42     fi
  43 }
  44
  45 #------------------------------------------------
  46 #       do_reboot
  47 #------------------------------------------------
  48 do_reboot() {
  49     echo "Reboot"
  50     "$SYNC"
  51     "$REBOOT"
  52     while [ 1 ]
  53     do
  54         sleep 1
  55         echo "."
  56     done
  57 }
  58
  59 #------------------------------------------------
  60 #       Main Routine Start
  61 #------------------------------------------------
  62 echo "You entered into /sbin/init on initrd"
  63
  64 mount_partitions
  65 mount_inform
  66
  67 cd /
  68
  69 # Manually parse /proc/cmdline to avoid additional tools on image
  70 read cmdline </proc/cmdline
  71 echo "Kernel command line: $cmdline"
  72 set -- $cmdline
  73 while [ $# -gt 0 ]; do
  74     key="${1%%=*}"
  75     if [ "$key" = "bootmode" ]; then
  76         BOOT_MODE="${1#*=}"
  77         break;
  78     fi
  79     shift
  80 done
  81
  82 if [ "z$BOOT_MODE" = "z" ]; then
  83     echo "BOOT_MODE was NOT defined!!"
  84     echo "Do reboot!!"
  85     do_reboot
  86 fi
  87 echo "BOOTMODE is ${BOOT_MODE}"
  88
  89 if [ -f /sbin/${BOOT_MODE}-init ]; then
  90     exec "/sbin/${BOOT_MODE}-init"
  91 else
  92     echo "no ${BOOT_MODE}-init!!"
  93     echo "Do reboot!!"
  94     do_reboot
  95 fi