split network setup in stage31/init

2 files changed, 75 insertions, 64 deletions

diff --git a/remote/rootfs/rootfs-stage31/data/bin/setup_network b/remote/rootfs/rootfs-stage31/data/bin/setup_network
new file mode 100755
index 00000000..32c1d5ef
--- /dev/null
+++ b/remote/rootfs/rootfs-stage31/data/bin/setup_network
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+echo "Mac address is '$MAC'"
+
+# setup network
+NWIF="eth0"
+# set up loopback networking
+echo "Setting up loopback"
+ip link set dev lo up 2>/dev/null
+ip addr add 127.0.0.1/8 dev lo 2>/dev/null
+echo "Setting up $NWIF"
+ip link set dev $NWIF up  2>/dev/null || { echo "No link for $NWIF, dropping to shell.."; setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'; }
+
+# analyze ip information from the kernel command line and put parts
+# of it into several variables
+if [ -n "$IPINFO" ] ; then
+        getip () {
+        	local val="$IPINFO:"; i=$(($1 - 1));
+        	while [ $i -gt 0 ] ; do
+                	val=${val#*:} ; i=$(($i - 1));
+	        done;
+        	echo $val|sed "s/:.*//";
+	}
+        clientip=$(getip 1)
+        serverip=$(getip 2)
+        gateway=$(getip 3)
+        subnet_mask=$(getip 4)
+        broadcast_address=$(ipcalc -s -b $clientip $subnet_mask|sed s/.*=//)
+        [ -z "$broadcast_address" ] && broadcast_address=255.255.255.255
+        # we might have an idea of the dns server via preboot
+        dns_srv=$(getip 5)
+        [ -n "$dns_srv" ] && echo nameserver $dns_srv >/etc/resolv.conf;
+        echo -e "# ip configuration written by $0 script:\nclientip=$clientip\n\
+subnet_mask=$subnet_mask\ngateway=$gateway\nserverip=$serverip\n\
+broadcast_address=$broadcast_address" >>/etc/initramfs-setup
+        # set static ip address
+        ip addr add $clientip/$(ipcalc -s -p $clientip $subnet_mask|sed s/.*=//) \
+        broadcast $broadcast_address dev $NWIF 2>/dev/null
+        ip route add default via $gateway 2>/dev/null
+else
+        NOIPYET="yes"
+fi
diff --git a/remote/rootfs/rootfs-stage31/data/init b/remote/rootfs/rootfs-stage31/data/init
index 9bda6db1..0cb341cf 100755
--- a/remote/rootfs/rootfs-stage31/data/init
+++ b/remote/rootfs/rootfs-stage31/data/init
@@ -12,20 +12,25 @@
 # First script for initial ramfs for OpenSLX linux stateless clients
 #############################################################################
 
+# debug shell
+drop_shell() {
+	echo "Dropping debug shell. CTRL + D will continue booting."
+	setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
+}
+
+# set PATH correctly
 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 export LD_LIBRARY_PATH=/usr/lib64
 
-
-mount -n -t tmpfs -o 'mode=755' run "/run"
-
 # mount the important standard directories
+mount -n -t tmpfs -o 'mode=755' run "/run"
 [ ! -f /proc/cpuinfo ] && mount -n -t proc proc /proc
 [ ! -d /sys/class ] && mount -n -t sysfs sysfs /sys
 
-echo "1" > /proc/sys/kernel/sysrq
+# let kernel know that mdev is to be used for hotplug
 echo "/sbin/mdev" > /proc/sys/kernel/hotplug
-# read graphic and network adaptor configuration (without proprietary drivers yet)
 
+# read graphic and network adaptor configuration (without proprietary drivers yet)
 # TODO: must ugly hack ever... needs to be improved when we add prop drivers
 for DRM in /lib/modules/*/kernel/drivers/gpu/drm/*.ko /lib/modules/*/kernel/drivers/gpu/drm/*/*.ko; do
 	DRM="$(basename "$DRM")"
@@ -34,6 +39,9 @@ for DRM in /lib/modules/*/kernel/drivers/gpu/drm/*.ko /lib/modules/*/kernel/driv
 	modprobe "$DRM"
 done
 
+# discover devices
+mdev -s &
+
 # read kernel command line for debugging switch
 DEBUG=0
 read KCL < /proc/cmdline
@@ -46,82 +54,43 @@ for opts in ${KCL}; do
 			SPLASH=1 ;;
 		ip=*)
 			# process IP info
-			ipinfo=${opts#ip=} ;;
+			IPINFO=${opts#ip=} ;;
 		nfs=*)
-      			nfs=${opts#nfs=}
-      			nfspath=${nfs#*:}
-      			nfsserver=${nfs%:/*}
+      			NFS=${opts#nfs=}
+      			NFSPATH=${nfs#*:}
+      			NFSSERVER=${nfs%:/*}
 			;;
 		BOOTIF=*)
-			macaddr="$( echo "$opts" | cut -b 11- | tr '-' ':' )" ;;
+			MAC="$( echo "$opts" | cut -b 11- | tr '-' ':' )" ;;
 	esac
 done
 
-echo "Mac address is '$macaddr'"
-
-mdev -s &
+# suppress kernel output if DEBUG is not set
+[ $DEBUG -ge 1 ] && echo "0" >/proc/sys/kernel/printk
 
+# start plymouth if activated
 if [ "x$SPLASH" == "x1" -a "x$DEBUG" != "x1" ]; then
-	# start plymouth
+	echo "Starting plymouth..."
 	plymouthd && plymouth show-splash
 fi
 
-# setup network
-nwif="eth0"
-# set up loopback networking
-echo "Setting up loopback"
-ip link set dev lo up 2>/dev/null
-ip addr add 127.0.0.1/8 dev lo 2>/dev/null
-echo "Setting up $nwif"
-ip link set dev $nwif up  2>/dev/null || { echo "No link for $nwif, dropping to shell.."; setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'; }
-
-# analyze ip information from the kernel command line and put parts
-# of it into several variables
-if [ -n "$ipinfo" ] ; then
-	getip () {
-	local val="$ipinfo:"; i=$(($1 - 1));
-	while [ $i -gt 0 ] ; do
-		val=${val#*:} ; i=$(($i - 1));
-	done;
-	echo $val|sed "s/:.*//"; }
-	clientip=$(getip 1)
-	serverip=$(getip 2)
-	gateway=$(getip 3)
-	subnet_mask=$(getip 4)
-	broadcast_address=$(ipcalc -s -b $clientip $subnet_mask|sed s/.*=//)
-	[ -z "$broadcast_address" ] && broadcast_address=255.255.255.255
-	# we might have an idea of the dns server via preboot
-	dns_srv=$(getip 5)
-	[ -n "$dns_srv" ] && echo nameserver $dns_srv >/etc/resolv.conf;
-	echo -e "# ip configuration written by $0 script:\nclientip=$clientip\n\
-subnet_mask=$subnet_mask\ngateway=$gateway\nserverip=$serverip\n\
-broadcast_address=$broadcast_address" >>/etc/initramfs-setup
-	# set static ip address
-	ip addr add $clientip/$(ipcalc -s -p $clientip $subnet_mask|sed s/.*=//) \
-	broadcast $broadcast_address dev $nwif 2>/dev/null
-	ip route add default via $gateway 2>/dev/null
-else
-	noipyet="yes"
-fi
-
+# preparations for mounting stage3.2
 mkdir -p /dev/shm/union /dev/shm/uniontmp /rorootfs
 mount -n -t tmpfs none /dev/shm/uniontmp
 
-if [ -n "$nfs" ] ; then
-	echo "Mounting stage 3.2 as NFS"
-	mount -t nfs -o ro,async,nolock ${nfsserver}:${nfspath} /rorootfs ||  { echo "Problem mounting NFS-Directory from ${nfsserver}:${nfspath}. Dropping to DEBUG shell."; DEBUG=1; } 	
+# mount stage32 per NFS if activated
+# or per squashfs else
+if [ -n "$NFS" ]; then
+	echo "Setup networking..."
+	/bin/setup_network
+	echo "Mounting stage 3.2 as NFS..."
+	mount -t nfs -o ro,async,nolock ${NFSSERVER}:${NFSPATH} /rorootfs ||  { echo "Problem mounting NFS-Directory from ${NFSSERVER}:${NFSPATH}."; drop_shell; }
 else
-	echo "Mounting stage 3.2 as SquashFS"
-	mount -t squashfs /mnt/*.sqfs /rorootfs || { echo "Problem mounting Squashfs. Dropping to DEBUG shell."; DEBUG=1; }
+	echo "Mounting stage 3.2 as SquashFS..."
+	mount -t squashfs /mnt/*.sqfs /rorootfs || { echo "Problem mounting Squashfs."; drop_shell; }
 fi
 			
-if [ $DEBUG -ge 1 ]; then
-	echo "Starting debug shell, CTRL + D will start Stage 3.2."
-	setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
-else
-	#Debug is not set so hide kernel debug output
-	echo "0" >/proc/sys/kernel/printk
-fi
+[ $DEBUG -ge 1 ] && drop_shell
 
 echo "Building aufs..."
 mv /mnt/modprobing /dev/shm/uniontmp