First cut of new linuxrc for Unslung

BKrev: 4272c2fdvDNPbq9fqafE9sldX5sGJQ

1 files changed, 157 insertions, 50 deletions

diff --git a/packages/nslu2-binary-only/unslung-rootfs-2.3r25/linuxrc b/packages/nslu2-binary-only/unslung-rootfs-2.3r25/linuxrc
index 5a18a0540c..d47ae79c01 100644
--- a/packages/nslu2-binary-only/unslung-rootfs-2.3r25/linuxrc
+++ b/packages/nslu2-binary-only/unslung-rootfs-2.3r25/linuxrc
@@ -1,57 +1,164 @@
 #!/bin/sh
 
-if [ -f /.useportmap ] ; then
-    /sbin/portmap
-fi
-# /bin/umount /initrd
+mounted=
+prefroot=
+runboot=
 
-/bin/echo "Firmware Version: `/bin/cat /.unslung`"
 /bin/mount -t proc proc /proc
-/bin/echo "5" > /proc/sys/kernel/panic
-/bin/sleep 1
-
-#mounted=
-#
-#/bin/echo "0x1f04" > /proc/sys/kernel/real-root-dev
-#
-#/bin/umount /mnt/tmpmnt/proc
-#/bin/umount /mnt/tmpmnt
-#
-#/bin/sleep 10
-#
-#if [ -z "$mounted" ] && /bin/mount -rt ext3 /dev/sda2 /mnt/tmpmnt ; then
-#
-#    if  [ -x /mnt/tmpmnt/bin/init ] &&
-#	[ -d /mnt/tmpmnt/unslung ] && [ -r /mnt/tmpmnt/.unslung ] &&
-#	[ "`/bin/cat /.unslung`" = "`/bin/cat /mnt/tmpmnt/.unslung`" ] ; then
-#	/bin/echo "Root filesystem will be mounted from /dev/sda2 ..."
-#	mounted=/mnt/tmpmnt
-#	/bin/echo "0x0802" > /proc/sys/kernel/real-root-dev
-#	[ -r $mounted/unslung/rc.linuxrc ] && . $mounted/unslung/rc.linuxrc
-#    fi
-#
-#    /bin/umount /mnt/tmpmnt
-#fi
-#
-#if [ -z "$mounted" ] && /bin/mount -rt ext3 /dev/sdb2 /mnt/tmpmnt ; then
-#
-#    if  [ -x /mnt/tmpmnt/bin/init ] &&
-#	[ -d /mnt/tmpmnt/unslung ] && [ -r /mnt/tmpmnt/.unslung ] &&
-#	[ "`/bin/cat /.unslung`" = "`/bin/cat /mnt/tmpmnt/.unslung`" ] ; then
-#	/bin/echo "Root filesystem will be mounted from /dev/sdb2 ..."
-#	mounted=/mnt/tmpmnt
-#	/bin/echo "0x0812" > /proc/sys/kernel/real-root-dev
-#	[ -r $mounted/unslung/rc.linuxrc ] && . $mounted/unslung/rc.linuxrc
-#    fi
-#
-#    /bin/umount /mnt/tmpmnt
-#fi
-#
-#if [ -z "$mounted" ] ; then
-#    /bin/echo "Root filesystem will be mounted from /dev/ram0 ..."
-#fi
-#
+
+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=//`
+device=/dev/`/bin/sed -n -e 's/^\(mtd[0-9]*\): .* "FIS directory"/\1/p' /proc/mtd`   
+length=`/bin/dd if=$device bs=2 skip=2048 2>/dev/null | /usr/bin/hexdump -n 4 -e '4/1 "%02X"' $device`
+
+# Determine desired rootfs
+    if [ -f /.ramdisk ] ; then
+	/bin/echo "Preferred root device is /dev/ram0 (maintenence)"
+	mounted=/mnt/newroot
+	prefroot=maintenence
+    elif [ -f /.sda1root ] ; then
+	/bin/echo "Preferred root device is /dev/sda1 (disk 1)"
+	mounted=/mnt/newroot
+	prefroot=sda1
+    elif [ -f /.sda2root ] ; then
+	/bin/echo "Preferred root device is /dev/sda2 (disk 1)"
+	mounted=/mnt/newroot
+	prefroot=sda2
+    elif [ -f /.sdb1root ] ; then
+	/bin/echo "Preferred root device is /dev/sdb1 (disk 2)"
+	mounted=/mnt/newroot
+	prefroot=sdb1
+    elif [ -f /.sdb2root ] ; then
+	/bin/echo "Preferred root device is /dev/sdb2 (disk 2)"
+	mounted=/mnt/newroot
+	prefroot=sdb2
+    elif [ -f /.altroot ] ; then
+	/bin/echo "Preferred root device is a user defined blockdevice"
+	mounted=/mnt/newroot
+	prefroot=altroot
+    elif [ -f /.nfsroot ] ; then
+	/bin/echo "Preferred root device is through NFS"
+        mounted=/mnt/newroot
+	prefroot=nfsroot
+    else
+	/bin/echo "Preferred root device is jffs2"
+	mounted=
+	prefroot=jffs2
+    fi
+fi
+
+# perform prepatory tasks
+if [ -n "$prefroot" ] ; then
+
+    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/newroot
+	if [ -L /mnt/newroot/sbin/init -o -x /mnt/newroot/sbin/init -o \
+	     -L /mnt/newroot/bin/init  -o -x /mnt/newroot/bin/init ] ; then
+	    /bin/echo "Root filesystem will be mounted from /dev/$prefroot ..."
+	else
+	    /bin/umount /mnt/newroot
+	    /bin/echo "Cant find valid rootfs on /dev/$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/newroot
+        ( /usr/bin/find . -print0 -mount | /usr/bin/cpio -p -0 -d -m -u /mnt/newroot )
+	if [ -r /mnt/newroot/.unslung ] ; then
+            /bin/cp /mnt/newroot/home/httpd/html/Management/upgrade.cgi /mnt/newroot/home/httpd/html/Management/upgrade-real.cgi
+            /bin/echo "#!/bin/sh" > /mnt/newroot/home/httpd/html/Management/upgrade.cgi
+            /bin/echo >> /mnt/newroot/home/httpd/html/Management/upgrade.cgi
+            /bin/echo "/bin/mount -t ramfs none /upload -o size=8196 2>/dev/null" \
+                >> /mnt/newroot/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/newroot/home/httpd/html/Management/upgrade.cgi
+            /bin/echo "/bin/umount /upload 2>/dev/null" \
+                >> /mnt/newroot/home/httpd/html/Management/upgrade.cgi
+            /bin/echo "exec /home/httpd/html/Management/upgrade-real.cgi" \
+                >> /mnt/newroot/home/httpd/html/Management/upgrade.cgi
+            /bin/echo "Root filesystem will be mounted from /dev/ram0 (a copy of /dev/mtdblock4) ..."
+	fi
+
+    fi
+
+    if [ $prefroot = "altroot" ] ; then
+        # The altrootloc and altrootopts vars MUST be chosen here.
+	# ie: $altrootopts="-rt ext3" and $altrootloc=/dev/md0
+	# Also modules can be loaded here.
+	# also if you have a really slow starting disk, you can put a large sleep value here.
+        . /.altroot
+
+        /bin/mount $altrootopts $altrootloc /mnt/newroot
+	if [ -L /mnt/newroot/sbin/init -o -x /mnt/newroot/sbin/init -o \
+	     -L /mnt/newroot/bin/init  -o -x /mnt/newroot/bin/init ] ; then
+	    /bin/echo "Root filesystem will be mounted from a user defined rootfs (altroot) ..."
+	else
+	    /bin/umount /mnt/newroot
+	    /bin/echo "Cant find valid rootfs on user defined rootfs (altroot), using jffs2 ..."
+	    mounted=
+	    prefroot=jffs2
+	fi
+    fi
+
+    if [ $prefroot = "nfsroot" ] ; then
+
+	/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/newroot
+
+    	if  [ -L /mnt/newroot/sbin/init -o -x /mnt/newroot/sbin/init -o \
+	      -L /mnt/newroot/bin/init  -o -x /mnt/newroot/bin/init ] ; then
+	    /bin/echo "Root filesystem will be mounted from an NFS root ..."
+	    mounted=/mnt/newroot
+	else
+	    /bin/umount /mnt/newroot
+	    /bin/echo "Cant find valid NFS rootfs, using jffs2 ..."
+	    mounted=
+	    prefroot=jffs2
+	fi
+
+    fi
+
+    if [ $prefroot = "jffs2" ] ; then
+	/bin/echo "Root filesystem will be mounted from /dev/mtdblock4 ..."
+	mounted=
+    fi
+fi
+
+# Pivot
+if [ -n "$mounted" ] ; then
+    /bin/umount /proc
+    cd $mounted
+    if [ -x ./linuxrc -o -L ./linuxrc ] ; then
+	runboot=/linuxrc
+    elif [ -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
+fi
+
 /bin/umount /proc
 
-exec /bin/init
 exit 0