Add functions to lookup in /etc/networks and set interface

addresses, invoke them from /etc/rc

release/picobsd/floppy.tree/etc/rc

@@ -24,6 +24,8 @@ done
 
 if [ -f /etc/rc.conf ]; then
     . /etc/rc.conf
+    set_main_interface
+    set_all_interfaces
 fi
 rm -f /var/run/*
 if [ "x$swapfile" != "xNO" -a -w "$swapfile" -a -b /dev/vn0b ]; then

release/picobsd/floppy.tree/etc/rc.conf

@@ -26,7 +26,7 @@ defaultrouter="NO"		# Set to default gateway (or NO).
 static_routes=""		# Set to static route list (or leave empty).
 gateway_enable="NO"		# Set to YES if this host will be a gateway.
 arpproxy_all=""			# replaces obsolete kernel option ARP_PROXYALL.
-mask="0xffffff00"
+default_mask="0xffffff00"
 }
 
 # the following lets the user specify a name and ip for his system
@@ -41,32 +41,91 @@ read_address() {
     fi
 }
 
-rc_conf_set_defaults
+# set "ether" using $1 (interface name) as search key
+get_ether() {
+    local key
+    key=$1
+    ether=""
+    set `ifconfig ${key}`
+    while [ "$1" != "" ] ; do
+    if [ "$1" = "ether" ] ; then
+	ether=$2
+	break
+    else
+	shift
+    fi
+    done
+}
 
-hostname=""
-while read a b c ; do
+# set "hostname" using $1 (ethernet address) as search key in /etc/hosts
+fetch_hostname() {
+    local a b c key
+    key=$1     # search key
+    hostname=""
+    while read a b c ; do
     if [ "$a" = "#ethertable" ] ; then
-        hostname="."
+	hostname="."
     elif [ "X$hostname" = "X." -a "X$a" = "X#" ] ; then
-	case X${main_ether} in
+	case X${key} in
 	X${b} ) # so we can use wildcards
 	    hostname=$c
 	    break
 	    ;;
 	esac
     fi
-done < /etc/hosts
-if [ "X$hostname" = "X" -o "X$hostname" = "X." ] ; then
-    if [ "X$main_ether" = "X" ] ; then
-	echo "No ethernets found, using localhost"
-	hostname=localhost
-    else
-	read_address
-    fi
-fi
+    done < /etc/hosts
+}
 
-eval ifconfig_${main_if}=\" \$hostname netmask \$mask\"
-network_interfaces=`ifconfig -l`
+# sets "mask" using $1 (netmask name) as the search key in /etc/networks
+fetch_mask() {
+    local a b c key
+    key=$1     # search key, typically hostname-netmask
+    mask=""
+    while read a b c; do # key mask otherstuff
+	case X${key} in
+	X${a} ) # we can use wildcards
+	    mask=$b
+	    break
+	    ;;
+	esac
+    done < /etc/networks
+}
+
+
+set_main_interface() {
+    fetch_hostname ${main_ether}
+
+    if [ "X$hostname" = "X" -o "X$hostname" = "X." ] ; then
+	if [ "X$main_ether" = "X" ] ; then
+	    echo "No ethernets found, using localhost"
+	    hostname=localhost
+	else
+	    read_address
+	fi
+    fi
+    fetch_mask ${hostname}-netmask
+    if [ "${mask}" = "" ] ; then
+	mask=${default_mask}
+    fi
+
+    eval ifconfig_${main_if}=\" \${hostname} netmask \${mask}\"
+    network_interfaces=`ifconfig -l`
+}
+
+set_all_interfaces() {
+    local i ether hostname mask
+
+    for i in `ifconfig -l` ; do
+	get_ether $i
+	fetch_hostname ${ether}
+	fetch_mask ${hostname}-netmask
+	if [ "${ether}" != "" -a "${hostname}" != "" ] ; then
+	    eval ifconfig_${i}=\" \${hostname} netmask \${mask}\"
+	fi
+    done
+}
+
+rc_conf_set_defaults
 
 ### Allow local configuration override at the very end here ##
 ### can make use of a case statement to set per-host things.