| 1 | #!/bin/sh |
| 2 | # Copyright (C) 2006 OpenWrt.org |
| 3 | |
| 4 | INITRAMFS=1 |
| 5 | |
| 6 | . /etc/preinit |
| 7 | |
| 8 | set_state init |
| 9 | echo "- init -" |
| 10 | |
| 11 | [ -n "$SWITCH_ROOT_TMPFS" ] && { |
| 12 | mount -o noatime none /mnt -t tmpfs |
| 13 | ( cd /; find -xdev -type d ) | ( cd /mnt; xargs mkdir -p ) |
| 14 | find / \! -type d -xdev | tar -cT /proc/self/fd/0 | tar -xC /mnt |
| 15 | mkdir /mnt/proc /mnt/dev /mnt/tmp /mnt/sys |
| 16 | mount -o noatime,move /proc /mnt/proc |
| 17 | mount -o noatime,move /dev /mnt/dev |
| 18 | mount -o noatime,move /tmp /mnt/tmp |
| 19 | mount -o noatime,move /sys /mnt/sys |
| 20 | rm -rf /proc /dev /tmp /sys |
| 21 | exec switch_root -c /dev/console /mnt /sbin/init |
| 22 | } |
| 23 | |
| 24 | # if we have no root parameter, just go to running from ramfs |
| 25 | [ -z $rootfs ] && { |
| 26 | export NOMOUNT="No Root" |
| 27 | exec /sbin/init |
| 28 | } |
| 29 | |
| 30 | #if we have a failsafe boot selected, dont bother |
| 31 | #trying to find or wait for a root mount point |
| 32 | [ -z "$FAILSAFE" ] || { |
| 33 | exec /bin/busybox init |
| 34 | } |
| 35 | |
| 36 | # Load the modules we have in initramfs, this should |
| 37 | # make the media accessible, but, it may take some time |
| 38 | . /lib/functions.sh |
| 39 | load_modules /etc/modules /etc/modules.d/* |
| 40 | |
| 41 | #wait 10 seconds for the disc to show up |
| 42 | #usb stick typically takes 4 to 6 seconds |
| 43 | #till it's readable |
| 44 | #it's quite possible the disc never shows up |
| 45 | #if we netbooted this kernel |
| 46 | COUNTER=0 |
| 47 | while [ $COUNTER -lt 10 ]; do |
| 48 | sleep 1 |
| 49 | [ -e $rootfs ] && let COUNTER=10; |
| 50 | let COUNTER=COUNTER+1 |
| 51 | done |
| 52 | [ -e $rootfs ] || { |
| 53 | export FAILSAFE="NoDisc" |
| 54 | exec /bin/busybox init |
| 55 | } |
| 56 | |
| 57 | # now we'll try mount it, again with a timeout |
| 58 | # This will fail if the inserted stick is formatted |
| 59 | # in a manner we dont understand |
| 60 | COUNTER=0 |
| 61 | while [ $COUNTER -lt 10 ]; do |
| 62 | sleep 1 |
| 63 | mount -o noatime $rootfs /mnt |
| 64 | [ $? -eq "0" ] && let COUNTER=100; |
| 65 | let COUNTER=COUNTER+1 |
| 66 | done |
| 67 | [ $? -ne "0" ] && { |
| 68 | export FAILSAFE="MountFail" |
| 69 | exec /bin/busybox init |
| 70 | } |
| 71 | |
| 72 | #It mounted, lets look for a postinit file, again, give it time |
| 73 | #I've seen this take 6 seconds to actually complete |
| 74 | COUNTER=0 |
| 75 | while [ $COUNTER -lt 10 ]; do |
| 76 | sleep 1 |
| 77 | [ -e /mnt/etc/banner ] && let COUNTER=10; |
| 78 | let COUNTER=COUNTER+1 |
| 79 | done |
| 80 | [ -e /mnt/etc/banner ] || { |
| 81 | export FAILSAFE="No Openwrt FS" |
| 82 | exec /bin/busybox init |
| 83 | } |
| 84 | |
| 85 | unset rootfs |
| 86 | |
| 87 | mount -o noatime,move /proc /mnt/proc |
| 88 | mount -o noatime,move /dev /mnt/dev |
| 89 | mount -o noatime,move /dev/pts /mnt/dev/pts |
| 90 | mount -o noatime,move /tmp /mnt/tmp |
| 91 | mount -o noatime,move /sys /mnt/sys |
| 92 | mount -o noatime none /tmp -t tmpfs |
| 93 | killall -q hotplug2 |
| 94 | exec switch_root -c /dev/console /mnt /sbin/init |
| 95 | |
| 96 | set_state done |
| 97 | |
