Minimize differences in ifstart() function between netstart and

install.sub which makes it easier to spot changes in the future.

- comments and formatting
- quotes on assignments are not needed (netstart)
- remove stray space in test (netstart)
- use $file variable with while-loop (netstart)
- although valid, instead of i use $i in arithmetic test (install.sub)

OK krw@, tb@
Looks good deraadt@

2 files changed, 19 insertions, 14 deletions

diff --git a/distrib/miniroot/install.sub b/distrib/miniroot/install.sub
index e81f59aa9b2..4171e0723a0 100644
--- a/distrib/miniroot/install.sub
+++ b/distrib/miniroot/install.sub
@@ -1,5 +1,5 @@
 #!/bin/ksh
-#	$OpenBSD: install.sub,v 1.994 2017/04/07 22:15:17 rpe Exp $
+#	$OpenBSD: install.sub,v 1.995 2017/04/07 22:53:25 rpe Exp $
 #
 # Copyright (c) 1997-2015 Todd Miller, Theo de Raadt, Ken Westerback
 # Copyright (c) 2015, Robert Peichaer <rpe@openbsd.org>
@@ -2131,29 +2131,30 @@ ifstart () {
 			# Make sure and get any remaining args in ext2,
 			# like the read below.
 			i=1
-			while [ i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
+			while [ $i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
 			ext2="$@"
 		else
 			# Read the next line or exit the while loop.
 			read af name mask bcaddr ext1 ext2 || break
 		fi
-		# $af can be "dhcp", "rtsol", an address family, commands,
+		# $af can be "dhcp", "up", "rtsol", an address family, commands,
 		# or a comment.
 		case "$af" in
 		"#"*|"!"*|"bridge"|"")
 			# Skip comments, user commands, bridges, and empty lines.
 			continue
 			;;
-		"dhcp")	[ "$name" = "NONE" ] && name=
+		"dhcp")
+			[ "$name" = "NONE" ] && name=
 			[ "$mask" = "NONE" ] && mask=
 			[ "$bcaddr" = "NONE" ] && bcaddr=
-			dhcpif="$dhcpif $if"
 			cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 down"
 			if [[ -x /sbin/dhclient ]]; then
 				cmd="$cmd; dhclient $if"
 			else
 				cmd="$cmd; echo /sbin/dhclient missing - skipping dhcp request."
 			fi
+			dhcpif="$dhcpif $if"
 			;;
 		"rtsol")
 			if ifconfig $if inet6 >/dev/null 2>&1; then
@@ -2163,7 +2164,8 @@ ifstart () {
 				cmd="$cmd; echo no INET6 support - skipping rtsol request."
 			fi
 			;;
-		*)	read dt dtaddr
+		*)
+			read dt dtaddr
 			if [ "$name" = "alias" ]; then
 				# Perform a 'shift' of sorts.
 				alias=$name
@@ -2177,7 +2179,8 @@ ifstart () {
 			fi
 			cmd="ifconfig $if $af $alias $name"
 			case "$dt" in
-			dest)	cmd="$cmd $dtaddr"
+			dest)
+				cmd="$cmd $dtaddr"
 				;;
 			*)
 				cmd2="$dt $dtaddr"
@@ -2190,7 +2193,7 @@ ifstart () {
 					return
 				fi
 				[ "$mask" ] && cmd="$cmd netmask $mask"
-				if [ "$bcaddr" -a X"$bcaddr" != "XNONE" ]; then
+				if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
 					cmd="$cmd broadcast $bcaddr"
 				fi
 				;;
@@ -2202,7 +2205,8 @@ ifstart () {
 				[ "$mask" ] && cmd="$cmd prefixlen $mask"
 				cmd="$cmd $bcaddr"
 				;;
-			*)	cmd="$cmd $mask $bcaddr"
+			*)
+				cmd="$cmd $mask $bcaddr"
 				;;
 			esac
 			cmd="$cmd $ext1 $ext2"
diff --git a/etc/netstart b/etc/netstart
index 88476411356..6586b069c9f 100644
--- a/etc/netstart
+++ b/etc/netstart
@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: netstart,v 1.174 2017/04/07 22:15:17 rpe Exp $
+#	$OpenBSD: netstart,v 1.175 2017/04/07 22:53:25 rpe Exp $
 
 # Turn off Strict Bourne shell mode.
 set +o sh
@@ -51,7 +51,7 @@ ifstart() {
 			# We are carrying over from the 'read dt dtaddr'
 			# last time.
 			set -- $cmd2
-			af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" cmd2=
+			af=$1 name=$2 mask=$3 bcaddr=$4 ext1=$5 cmd2=
 			# Make sure and get any remaining args in ext2,
 			# like the read below.
 			i=1
@@ -64,7 +64,8 @@ ifstart() {
 		# $af can be "dhcp", "up", "rtsol", an address family, commands,
 		# or a comment.
 		case "$af" in
-		"#"*|"") # Skip comments and empty lines.
+		"#"*|"")
+			# Skip comments and empty lines.
 			continue
 			;;
 		"!"*) # Parse commands.
@@ -84,7 +85,7 @@ ifstart() {
 			;;
 		*)
 			read dt dtaddr
-			if [ "$name"  = "alias" ]; then
+			if [ "$name" = "alias" ]; then
 				# Perform a 'shift' of sorts.
 				alias=$name
 				name=$mask
@@ -131,7 +132,7 @@ ifstart() {
 			;;
 		esac
 		eval "$cmd"
-	done </etc/hostname.$if
+	done <$file
 }
 
 # Start multiple interfaces by driver name.