diff options
author | groz <groz@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-08-18 12:40:47 +0000 |
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committer | groz <groz@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-08-18 12:40:47 +0000 |
commit | b694d99910a6c9a713d246e0791e98a843c35c42 (patch) | |
tree | 6660b521b65c7d2cef142fe17e5079e727a84d6a /target/linux/generic-2.6/files/init | |
parent | 219cb829cb3aca742c41fbfa7b54ed681afba986 (diff) |
Flesh out early userspace for initramfs to allow booting from media
git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4592 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic-2.6/files/init')
-rwxr-xr-x | target/linux/generic-2.6/files/init | 81 |
1 files changed, 79 insertions, 2 deletions
diff --git a/target/linux/generic-2.6/files/init b/target/linux/generic-2.6/files/init index 8ca48a04c..eda776c87 100755 --- a/target/linux/generic-2.6/files/init +++ b/target/linux/generic-2.6/files/init @@ -1,3 +1,80 @@ -#!/bin/ash +#!/bin/sh +# Copyright (C) 2006 OpenWrt.org + +export PATH=/bin:/sbin:/usr/bin:/usr/sbin +mount none /proc -t proc mount none /dev -t devfs -exec /bin/busybox init + +# the root mount point can come from the kernel command line +# or it can be overridden in the preinit.arch file +[ -f /etc/preinit.arch ] && . /etc/preinit.arch + +# if we have no root parameter, just go to running from ramfs +[ -z $rootfs ] && { + export NOMOUNT="No Root" + exec /sbin/init +} + +#if we have a failsafe boot selected, dont bother +#trying to find or wait for a root mount point +[ -z "$FAILSAFE" ] || { + exec /bin/busybox init +} + +# Load the modules we have in initramfs, this should +# make the media accessible, but, it may take some time +. /etc/functions.sh +load_modules /etc/modules /etc/modules.d/* + +#wait 10 seconds for the disc to show up +#usb stick typically takes 4 to 6 seconds +#till it's readable +#it's quite possible the disc never shows up +#if we netbooted this kernel +COUNTER=0 +while [ $COUNTER -lt 10 ]; do + sleep 1 + [ -e $rootfs ] && let COUNTER=10; + let COUNTER=COUNTER+1 +done +[ -e $rootfs ] || { + export FAILSAFE="NoDisc" + exec /bin/busybox init +} + +# now we'll try mount it, again with a timeout +# This will fail if the inserted stick is formatted +# in a manner we dont understand +COUNTER=0 +while [ $COUNTER -lt 10 ]; do + sleep 1 + mount $rootfs /mnt + [ $? -eq "0" ] && let COUNTER=100; + let COUNTER=COUNTER+1 +done +[ $? -ne "0" ] && { + export FAILSAFE="MountFail" + exec /bin/busybox init +} + +#It mounted, lets look for a postinit file, again, give it time +#I've seen this take 6 seconds to actually complete +COUNTER=0 +while [ $COUNTER -lt 10 ]; do + sleep 1 + [ -e /mnt/postinit ] && let COUNTER=10; + let COUNTER=COUNTER+1 +done +[ -e /mnt/postinit ] || { + export FAILSAFE="No postinit" + exec /bin/busybox init +} + +unset rootfs + +mount -o move /proc /mnt/proc +mount -o move /dev /mnt/dev +mount -o move /tmp /mnt/tmp +mount -o move /sys /mnt/sys + +exec switch_root -c /dev/console /mnt /postinit |