From a86b16aa213caaa83841fb4b43940e325ca1bb82 Mon Sep 17 00:00:00 2001
From: Rod Whitby <rod@whitby.id.au>
Date: Thu, 5 May 2005 09:05:16 +0000
Subject: Unslung and OpenSlug linuxrc corrections

BKrev: 4279e1ccfjKblxAjFzpCmQ50KUV4hw
---
 packages/openslug-init/openslug-init-0.10/linuxrc | 146 ++++++++++++++++++++++
 1 file changed, 146 insertions(+)

(limited to 'packages/openslug-init/openslug-init-0.10')

diff --git a/packages/openslug-init/openslug-init-0.10/linuxrc b/packages/openslug-init/openslug-init-0.10/linuxrc
index e69de29bb2..47cad6be51 100644
--- a/packages/openslug-init/openslug-init-0.10/linuxrc
+++ b/packages/openslug-init/openslug-init-0.10/linuxrc
@@ -0,0 +1,146 @@
+#!/bin/sh
+
+# ****  DO NOT EVEN THINK OF EDITING OR REMOVING THIS FILE  ****
+# **** UNLESS YOU REALLY KNOW *EXACTLY* WHAT YOU ARE DOING. ****
+
+
+# Determine the desired rootfs based on user flag files.
+
+if [ -f /.ramdisk ] ; then
+    /bin/echo "Preferred root device is /dev/ram0 (maintenence)"
+    mounted=/mnt
+    prefroot=maintenence
+elif [ -f /.sda1root ] ; then
+    /bin/echo "Preferred root device is /dev/sda1 (disk 1)"
+    mounted=/mnt
+    prefroot=sda1
+elif [ -f /.sda2root ] ; then
+    /bin/echo "Preferred root device is /dev/sda2 (disk 1)"
+    mounted=/mnt
+    prefroot=sda2
+elif [ -f /.sdb1root ] ; then
+    /bin/echo "Preferred root device is /dev/sdb1 (disk 2)"
+    mounted=/mnt
+    prefroot=sdb1
+elif [ -f /.sdb2root ] ; then
+    /bin/echo "Preferred root device is /dev/sdb2 (disk 2)"
+    mounted=/mnt
+    prefroot=sdb2
+elif [ -f /.nfsroot ] ; then
+    /bin/echo "Preferred root device is NFS"
+    mounted=/mnt
+    prefroot=nfsroot
+else
+    /bin/echo "Preferred root device is jffs2"
+    mounted=
+    prefroot=jffs2
+fi
+
+
+# Perform prepatory tasks, and determine whether the desired rootfs is viable.
+
+/bin/mount -t proc proc /proc
+
+if [ $prefroot = "sda1" -o $prefroot = "sda2" -o $prefroot = "sdb1" -o $prefroot = "sdb2" ] ; then
+    /bin/echo "Sleeping 10sec while waiting for disk..."
+    sleep 10
+    /bin/mount -rt ext3 /dev/$prefroot /mnt
+    if [ -L /mnt/sbin/init -o -x /mnt/sbin/init -o \
+	-L /mnt/bin/init  -o -x /mnt/bin/init ] ; then
+	/bin/echo "Root filesystem will be mounted from /dev/$prefroot ..."
+    else
+	/bin/umount /mnt
+	/bin/echo "Can't find valid rootfs on /dev/$prefroot, using jffs2 ..."
+	mounted=
+	prefroot=jffs2
+    fi
+fi
+
+if [ $prefroot = "maintenence" ] ; then
+    /bin/dd if=/dev/zero of=/dev/ram0 bs=1k count=12k 2>/dev/null 
+    /usr/bin/mke2fs -m 0 /dev/ram0 12288
+    /bin/mount -t ext2 /dev/ram0 /mnt
+    ( /usr/bin/find . -print0 -mount | /usr/bin/cpio -p -0 -d -m -u /mnt )
+    /bin/rm -f /mnt/linuxrc
+    /bin/cp /mnt/home/httpd/html/Management/upgrade.cgi /mnt/home/httpd/html/Management/upgrade-real.cgi
+    /bin/echo "#!/bin/sh" > /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo >> /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo "/bin/mount -t ramfs none /upload -o size=8196 2>/dev/null" \
+	>> /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo "/bin/dd if=/dev/zero of=/upload/free-ram bs=1k count=8k 2>/dev/null" \
+	>> /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo "/bin/umount /upload 2>/dev/null" \
+	>> /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo "exec /home/httpd/html/Management/upgrade-real.cgi" \
+	>> /mnt/home/httpd/html/Management/upgrade.cgi
+    /bin/echo "Root filesystem will be mounted from /dev/ram0 (a copy of /dev/mtdblock4) ..."
+fi
+
+if [ $prefroot = "nfsroot" ] ; then
+
+    sysconflen=`/bin/dd if=/dev/mtd1 bs=4 count=1 2>/dev/null | /usr/bin/hexdump -n 6 -e '"%02d"'`
+    ipaddr=`/bin/dd if=/dev/mtd1 bs=1 count=$sysconflen skip=4 2>/dev/null | grep ip_addr | sed -e s/ip_addr=//`
+    netmask=`/bin/dd if=/dev/mtd1 bs=1 count=$sysconflen skip=4 2>/dev/null | grep netmask | sed -e s/netmask=//`
+    gateway=`/bin/dd if=/dev/mtd1 bs=1 count=$sysconflen skip=4 2>/dev/null | grep gateway | sed -e s/gateway=//`
+
+    /sbin/insmod ixp400
+    /sbin/insmod ixp425_eth
+    /sbin/ifconfig ixp0 up $ipaddr netmask $netmask
+    /sbin/route add default gw $gateway
+
+    /sbin/ifconfig lo up 127.0.0.1
+
+    # The nfsrootloc and nfsrootopts vars can be overridden here.
+    . /.nfsroot
+
+    /bin/mount $nfsrootopts $nfsrootloc /mnt
+
+    if  [ -L /mnt/sbin/init -o -x /mnt/sbin/init -o \
+	-L /mnt/bin/init  -o -x /mnt/bin/init ] ; then
+	/bin/echo "Root filesystem will be mounted from an NFS root ..."
+	mounted=/mnt
+    else
+	/bin/umount /mnt
+	/bin/echo "Can't find valid NFS rootfs, using jffs2 ..."
+	mounted=
+	prefroot=jffs2
+    fi
+fi
+
+if [ $prefroot = "jffs2" ] ; then
+    /bin/echo "Root filesystem will be mounted from /dev/mtdblock4 ..."
+    mounted=
+fi
+
+
+/bin/umount /proc
+
+# Pivot to the desired rootfs and run the initial executable.
+
+if [ -n "$mounted" ] ; then
+
+    cd $mounted
+
+    if [ -x ./sbin/init -o -L ./sbin/init ] ; then
+	runboot=/sbin/init
+    elif [ -x ./bin/init -o -L ./bin/init ] ; then
+	runboot=/bin/init
+    else
+	runboot=/bin/sh
+    fi
+
+    /sbin/pivot_root . initrd
+
+    exec /usr/sbin/chroot . $runboot < /dev/console 1> /dev/console 2> /dev/console
+
+else
+
+    exec /bin/init
+
+fi
+
+/bin/echo "Can't chroot to $prefroot, using jffs2 ..."
+exec /bin/init
+
+# Last-resort fall-back - this should never be reached.
+/bin/sh
-- 
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