dhcpcd-run-hooks: POSIX shell does not require the local builtin

And sadly some ksh variants don't support it.
As dhcpcd strives to be portable, stop using local.

9 files changed, 37 insertions, 69 deletions

diff --git a/hooks/10-wpa_supplicant b/hooks/10-wpa_supplicant
index 9eec0c1f..6249385d 100644
--- a/hooks/10-wpa_supplicant
+++ b/hooks/10-wpa_supplicant
@@ -20,8 +20,6 @@ fi
 
 wpa_supplicant_ctrldir()
 {
-	local dir
-
 	dir=$(key_get_value "[[:space:]]*ctrl_interface=" \
 		"$wpa_supplicant_conf")
 	dir=$(trim "$dir")
@@ -37,8 +35,6 @@ wpa_supplicant_ctrldir()
 
 wpa_supplicant_start()
 {
-	local dir err errn
-
 	# If the carrier is up, don't bother checking anything
 	[ "$ifcarrier" = "up" ] && return 0
 
@@ -72,8 +68,6 @@ wpa_supplicant_start()
 
 wpa_supplicant_reconfigure()
 {
-	local dir err errn
-
 	dir=$(wpa_supplicant_ctrldir)
 	[ -z "$dir" ] && return 1
 	if ! wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1; then
@@ -92,8 +86,6 @@ wpa_supplicant_reconfigure()
 
 wpa_supplicant_stop()
 {
-	local dir err errn
-
 	dir=$(wpa_supplicant_ctrldir)
 	[ -z "$dir" ] && return 1
 	wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 || return 0
diff --git a/hooks/15-timezone b/hooks/15-timezone
index 0ccdc45b..ac04c652 100644
--- a/hooks/15-timezone
+++ b/hooks/15-timezone
@@ -4,10 +4,9 @@
 
 set_zoneinfo()
 {
-	local zoneinfo_dir= zone_file=
-
 	[ -z "$new_tzdb_timezone" ] && return 0
 
+	zoneinfo_dir=
 	for d in \
 		/usr/share/zoneinfo	\
 		/usr/lib/zoneinfo	\
diff --git a/hooks/20-resolv.conf b/hooks/20-resolv.conf
index e4db368d..b03ab578 100644
--- a/hooks/20-resolv.conf
+++ b/hooks/20-resolv.conf
@@ -13,8 +13,7 @@ NL="
 
 build_resolv_conf()
 {
-	local cf="$state_dir/resolv.conf.$ifname"
-	local interfaces= header= search= srvs= servers= x=
+	cf="$state_dir/resolv.conf.$ifname"
 
 	# Build a list of interfaces
 	interfaces=$(list_interfaces "$resolv_conf_dir")
@@ -77,7 +76,6 @@ build_resolv_conf()
 # regarding DNS option lifetime in ND messages.
 eval_nd_dns()
 {
-
 	eval ltime=\$nd${i}_rdnss${j}_lifetime
 	if [ -z "$ltime" -o "$ltime" = 0 ]; then
 		rdnss=
@@ -101,8 +99,8 @@ eval_nd_dns()
 
 add_resolv_conf()
 {
-	local x= conf="$signature$NL" warn=true
-	local i j ltime rdnss dnssl new_rdnss new_dnssl
+	conf="$signature$NL"
+	warn=true
 
 	# Loop to extract the ND DNS options using our indexed shell values
 	i=1
diff --git a/hooks/29-lookup-hostname b/hooks/29-lookup-hostname
index 04ad275e..d0b10329 100644
--- a/hooks/29-lookup-hostname
+++ b/hooks/29-lookup-hostname
@@ -3,7 +3,6 @@
 lookup_hostname()
 {
 	[ -z "$new_ip_address" ] && return 1
-	local h=
 	# Silly ISC programs love to send error text to stdout
 	if type dig >/dev/null 2>&1; then
 		h=$(dig +short -x $new_ip_address)
diff --git a/hooks/30-hostname b/hooks/30-hostname
index 6f8623f8..5f7d26da 100644
--- a/hooks/30-hostname
+++ b/hooks/30-hostname
@@ -22,8 +22,6 @@
 # Some systems don't have hostname(1)
 _hostname()
 {
-	local name=
-
 	if [ -z "${1+x}" ]; then
 		if type hostname >/dev/null 2>&1; then
 			hostname
@@ -55,10 +53,19 @@ _hostname()
 	fi
 }
 
-need_hostname()
+set_hostname_vars()
 {
-	local hfqdn=false hshort=false
+	hfqdn=false
+	hshort=false
+	case "$hostname_fqdn" in
+	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|1)	hfqdn=true;;
+	""|[Ss][Ee][Rr][Vv][Ee][Rr])		;;
+	*)					hshort=true;;
+	esac
+}
 
+need_hostname()
+{
 	# Always load the hostname variable for future use
 	hostname="$(_hostname)"
 	case "$hostname" in
@@ -70,11 +77,7 @@ need_hostname()
 	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|1) return 0;;
 	esac
 
-	case "$hostname_fqdn" in
-	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|1)	hfqdn=true;;
-	""|[Ss][Ee][Rr][Vv][Ee][Rr])		;;
-	*)					hshort=true;;
-	esac
+	set_hostname_vars
 
 	if [ -n "$old_fqdn" ]; then
 		if ${hfqdn} || ! ${hsort}; then
@@ -105,7 +108,6 @@ need_hostname()
 
 try_hostname()
 {
-
 	[ "$hostname" = "$1" ] && return 0
 	if valid_domainname "$1"; then
 		syslog info "Setting hostname: $1"
@@ -117,15 +119,9 @@ try_hostname()
 
 set_hostname()
 {
-	local hfqdn=false hshort=false
-
 	need_hostname || return
 
-	case "$hostname_fqdn" in
-	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|1)	hfqdn=true;;
-	""|[Ss][Ee][Rr][Vv][Ee][Rr])		;;
-	*)					hshort=true;;
-	esac
+	set_hostname_vars
 
 	if [ -n "$new_fqdn" ]; then
 		if ${hfqdn} || ! ${hshort}; then
diff --git a/hooks/50-ntp.conf b/hooks/50-ntp.conf
index 74805039..12178684 100644
--- a/hooks/50-ntp.conf
+++ b/hooks/50-ntp.conf
@@ -57,12 +57,12 @@ NL="
 
 build_ntp_conf()
 {
-	local cf="$state_dir/ntp.conf.$ifname"
-	local interfaces= header= srvs= servers= x=
+	cf="$state_dir/ntp.conf.$ifname"
 
 	# Build a list of interfaces
 	interfaces=$(list_interfaces "$ntp_conf_dir")
 
+	servers=
 	if [ -n "$interfaces" ]; then
 		# Build the header
 		for x in ${interfaces}; do
@@ -107,7 +107,7 @@ build_ntp_conf()
 
 add_ntp_conf()
 {
-	local cf="$ntp_conf_dir/$ifname" x=
+	cf="$ntp_conf_dir/$ifname"
 
 	[ -e "$cf" ] && rm "$cf"
 	[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
diff --git a/hooks/50-yp.conf b/hooks/50-yp.conf
index 2da68ebc..cc63d139 100644
--- a/hooks/50-yp.conf
+++ b/hooks/50-yp.conf
@@ -9,9 +9,10 @@ ypbind_pid()
 make_yp_conf()
 {
 	[ -z "$new_nis_domain" -a -z "$new_nis_servers" ] && return 0
-	local cf=/etc/yp.conf."$ifname" prefix= x= pid=
+	cf=/etc/yp.conf."$ifname"
 	rm -f "$cf"
 	echo "$signature" > "$cf"
+	prefix=
 	if [ -n "$new_nis_domain" ]; then
 		if ! valid_domainname "$new_nis_domain"; then
 			syslog err "Invalid NIS domain name: $new_nis_domain"
@@ -43,7 +44,7 @@ restore_yp_conf()
 {
 	[ -n "$old_nis_domain" ] && domainname ""
 	restore_conf /etc/yp.conf || return 0
-	local pid="$(ypbind_pid)"
+	pid="$(ypbind_pid)"
 	if [ -n "$pid" ]; then
 		kill -HUP "$pid"
 	fi
diff --git a/hooks/50-ypbind.in b/hooks/50-ypbind.in
index a9ebbfa6..eeb3f718 100644
--- a/hooks/50-ypbind.in
+++ b/hooks/50-ypbind.in
@@ -10,8 +10,6 @@ ypbind_dir="$state_dir/ypbind"
 
 best_domain()
 {
-	local i=
-
 	for i in "$ypbind_dir/$interface_order".*; do
 		if [ -f "$i" ]; then
 			cat "$i"
@@ -29,9 +27,9 @@ make_yp_binding()
 	if [ -z "$ypdomain_dir" ]; then
 		false
 	else
-		local cf="$ypdomain_dir/$new_nis_domain$ypdomain_suffix"
+		cf="$ypdomain_dir/$new_nis_domain$ypdomain_suffix"
 		if [ -n "$new_nis_servers" ]; then
-			local ncf="$cf.$ifname" x=
+			ncf="$cf.$ifname"
 			rm -f "$ncf"
 			for x in $new_nis_servers; do
 				echo "$x" >>"$ncf"
@@ -42,7 +40,7 @@ make_yp_binding()
 		fi
 	fi
 
-	local nd="$(best_domain)"
+	nd="$(best_domain)"
 	if [ $? = 0 -a "$nd" != "$(domainname)" ]; then
 		domainname "$nd"
 		if [ -n "$ypbind_restart_cmd" ]; then
@@ -53,9 +51,8 @@ make_yp_binding()
 
 restore_yp_binding()
 {
-
 	rm -f "$ypbind_dir/$ifname"
-	local nd="$(best_domain)"
+	nd="$(best_domain)"
 	# We need to stop ypbind if there is no best domain
 	# otherwise it will just stall as we cannot set domainname
 	# to blank :/
diff --git a/hooks/dhcpcd-run-hooks.in b/hooks/dhcpcd-run-hooks.in
index c1d01256..440e25c9 100644
--- a/hooks/dhcpcd-run-hooks.in
+++ b/hooks/dhcpcd-run-hooks.in
@@ -18,7 +18,6 @@ _detected_init=false
 # Ensure that all arguments are unique
 uniqify()
 {
-	local result= i=
 	for i do
 		case " $result " in
 			*" $i "*);;
@@ -34,7 +33,6 @@ uniqify()
 # Otherwise we just use what we have.
 list_interfaces()
 {
-	local i= x= ifaces=
 	for i in $interface_order; do
 		for x in "$1"/$i.*; do
 			[ -f "$x" ] && ifaces="$ifaces${ifaces:+ }${x##*/}"
@@ -49,8 +47,7 @@ list_interfaces()
 # Trim function
 trim()
 {
-	local var="$*"
-
+	var="$*"
 	var=${var#"${var%%[![:space:]]*}"}
 	var=${var%"${var##*[![:space:]]}"}
 	if [ -z "$var" ]; then
@@ -65,9 +62,9 @@ trim()
 # but sed may not always be available at the time.
 key_get_value()
 {
-	local key="$1" value= x= line=
-
+	key="$1"
 	shift
+
 	if type sed >/dev/null 2>&1; then
 		sed -n "s/^$key//p" $@
 	else
@@ -85,7 +82,9 @@ key_get_value()
 # but sed may not always be available at the time.
 remove_markers()
 {
-	local m1="$1" m2="$2" x= line= in_marker=0
+	m1="$1"
+	m2="$2"
+	in_marker=0
 
 	shift; shift
 	if type sed >/dev/null 2>&1; then
@@ -106,7 +105,6 @@ remove_markers()
 # Compare two files.
 comp_file()
 {
-
 	[ -e "$1" -a -e "$2" ] || return 1
 
 	if type cmp >/dev/null 2>&1; then
@@ -123,7 +121,6 @@ comp_file()
 # If different, replace first with second otherwise remove second.
 change_file()
 {
-
 	if [ -e "$1" ]; then
 		if comp_file "$1" "$2"; then
 			rm -f "$2"
@@ -139,7 +136,6 @@ change_file()
 # If different, copy or link depending on target type
 copy_file()
 {
-
 	if [ -h "$2" ]; then
 		[ "$(readlink "$2")" = "$1" ] && return 1
 		ln -sf "$1" "$2"
@@ -152,7 +148,6 @@ copy_file()
 # Save a config file
 save_conf()
 {
-
 	if [ -f "$1" ]; then
 		rm -f "$1-pre.$interface"
 		cat "$1" > "$1-pre.$interface"
@@ -162,7 +157,6 @@ save_conf()
 # Restore a config file
 restore_conf()
 {
-
 	[ -f "$1-pre.$interface" ] || return 1
 	cat "$1-pre.$interface" > "$1"
 	rm -f "$1-pre.$interface"
@@ -171,7 +165,7 @@ restore_conf()
 # Write a syslog entry
 syslog()
 {
-	local lvl="$1"
+	lvl="$1"
 
 	if [ "$lvl" = debug ]; then
 		${syslog_debug} || return 0
@@ -190,8 +184,7 @@ syslog()
 # Check for a valid name as per RFC952 and RFC1123 section 2.1
 valid_domainname()
 {
-	local name="$1" label
-
+	name="$1"
 	[ -z "$name" -o ${#name} -gt 255 ] && return 1
 	
 	while [ -n "$name" ]; do
@@ -209,8 +202,6 @@ valid_domainname()
 
 valid_domainname_list()
 {
-	local name
-
 	for name do
 		valid_domainname "$name" || return $?
 	done
@@ -228,7 +219,7 @@ detect_init()
 
 	[ -n "$_service_cmd" ] && return 0
 
-	if ${_detected_init}; then
+	if $_detected_init; then
 		[ -n "$_service_cmd" ]
 		return $?
 	fi
@@ -236,7 +227,7 @@ detect_init()
 	# Detect the running init system.
 	# As systemd and OpenRC can be installed on top of legacy init
 	# systems we try to detect them first.
-	local status="@STATUSARG@"
+	status="@STATUSARG@"
 	: ${status:=status}
 	if [ -x /bin/systemctl -a -S /run/systemd/private ]; then
 		_service_exists="/bin/systemctl --quiet is-enabled \$1.service"
@@ -297,7 +288,6 @@ detect_init()
 # Check a system service exists 
 service_exists()
 {
-
 	if [ -z "$_service_exists" ]; then
 		detect_init || return 1
 	fi
@@ -307,7 +297,6 @@ service_exists()
 # Send a command to a system service
 service_cmd()
 {
-
 	if [ -z "$_service_cmd" ]; then
 		detect_init || return 1
 	fi
@@ -317,7 +306,6 @@ service_cmd()
 # Send a command to a system service if it is running
 service_status()
 {
-
 	if [ -z "$_service_cmd" ]; then
 		detect_init || return 1
 	fi
@@ -331,12 +319,10 @@ service_status()
 # Handy macros for our hooks
 service_command()
 {
-
 	service_exists $1 && service_cmd $1 $2
 }
 service_condcommand()
 {
-
 	service_exists $1 && service_status $1 && service_cmd $1 $2
 }