src/initrd-recovery/init

   1 #!/bin/bash
   2
   3 FAKE_ROOT=/system
   4 FAKE_ROOT_RO=/system-ro
   5
   6 STATUS_DIR=${FAKE_ROOT}/opt/data/recovery
   7 STATUS_FILE=${STATUS_DIR}/RW.STATUS
   8 DELTA_PATH_FILE=${STATUS_DIR}/DELTA.PATH
   9
  10 CAT="/bin/cat"
  11 SYNC="/bin/sync"
  12 MKDIR="/bin/mkdir"
  13 MOUNT="/bin/mount"
  14 UMOUNT="/bin/umount"
  15 GREP="/bin/grep"
  16 REBOOT="/sbin/reboot"
  17 CUT="/usr/bin/cut"
  18 TR="/usr/bin/tr"
  19 PARTX="/usr/sbin/partx"
  20 BLKID="/usr/sbin/blkid"
  21 SED="/usr/bin/sed"
  22
  23 #------------------------------------------------
  24 #       get partition id
  25 #------------------------------------------------
  26 get_partition_id() {
  27     EMMC_DEVICE="/dev/mmcblk0"
  28     RET_PARTX=$("$PARTX" -s ${EMMC_DEVICE})
  29     TEST=$(echo "$RET_PARTX" | "$TR" -s ' ' | "$SED" -e '1d' -e 's/^ //' | "$CUT" -d ' ' -f 6)
  30     if [ "z$TEST" == "z" ]; then
  31         PART_ROOTFS=$("$BLKID" -L "rootfs" -o device)
  32         PART_SYSTEM_DATA=$("$BLKID" -L "system-data" -o device)
  33         PART_USER=$("$BLKID" -L "user" -o device)
  34     else
  35         PART_ROOTFS=${EMMC_DEVICE}p$(
  36                         echo "$RET_PARTX" |
  37                         "$TR" -s ' ' | "$TR" '[:upper:]' '[:lower:]' |
  38                         "$GREP" "rootfs" | "$SED" 's/^ //' |
  39                         "$CUT" -d ' ' -f 1)
  40         PART_SYSTEM_DATA=${EMMC_DEVICE}p$(
  41                         echo "$RET_PARTX" |
  42                         "$TR" -s ' ' | "$TR" '[:upper:]' '[:lower:]' |
  43                         "$GREP" "system-data" | "$SED" 's/^ //' |
  44                         "$CUT" -d ' ' -f 1)
  45         PART_USER=${EMMC_DEVICE}p$(
  46                         echo "$RET_PARTX" |
  47                         "$TR" -s ' ' | "$TR" '[:upper:]' '[:lower:]' |
  48                         "$GREP" "user" | "$SED" 's/^ //' |
  49                         "$CUT" -d ' ' -f 1)
  50     fi
  51 }
  52
  53 #------------------------------------------------
  54 #       mount_blk_partitions
  55 #------------------------------------------------
  56 mount_blk_partitions() {
  57     get_partition_id
  58
  59     echo "mount block device partitions"
  60     "$MOUNT" -t ext4 ${PART_ROOTFS} ${FAKE_ROOT}
  61     "$MOUNT" -t ext4 ${PART_SYSTEM_DATA} ${FAKE_ROOT}/opt
  62     "$MOUNT" -t ext4 ${PART_USER} ${FAKE_ROOT}/opt/usr
  63 }
  64
  65 #------------------------------------------------
  66 #       mount_partitions
  67 #------------------------------------------------
  68 mount_partitions() {
  69     "$MOUNT" -t proc none /proc
  70     "$MOUNT" -t sysfs none /sys
  71     "$MOUNT" -t smackfs smackfs /smack
  72     "$MOUNT" -t tmpfs tmpfs /run -o rw,nosuid,nodev,mode=755
  73     "$MOUNT" -t tmpfs tmpfs /tmp -o mode=1777,smackfsroot=*
  74
  75     "$MKDIR" /dev/pts
  76     "$MOUNT" -t devpts devpts /dev/pts
  77 }
  78
  79 #------------------------------------------------
  80 #       do_reboot
  81 #------------------------------------------------
  82 do_reboot() {
  83     echo "Reboot"
  84     "$SYNC"
  85     "$REBOOT"
  86     while [ 1 ]
  87     do
  88         sleep 1
  89         echo "."
  90     done
  91 }
  92
  93 #------------------------------------------------
  94 #       Main Routine Start
  95 #------------------------------------------------
  96 echo "You entered into /sbin/init on initrd"
  97
  98 mount_partitions
  99
 100 "$CAT" /proc/cmdline
 101
 102 cd /
 103
 104 BOOT_MODE=$("$CAT" /proc/cmdline | "$TR" ' ' \\n | "$GREP" bootmode | "$CUT" -d= -f2)
 105
 106 if [ "z$BOOT_MODE" == "z" ]; then
 107     echo "BOOT_MODE was NOT defined!!"
 108     echo "Do reboot!!"
 109     do_reboot
 110 fi
 111 echo "BOOTMODE is ${BOOT_MODE}"
 112 exec /sbin/${BOOT_MODE}-init