olsr: init-script: minor style changes

1) echo -n -> printf
2) do not 'return 0' in functions where rc is 0 anyway
3) calc with $(( $var + $x )) -> $(( var + x ))

1 files changed, 26 insertions, 37 deletions

diff --git a/olsrd/files/olsrd.init b/olsrd/files/olsrd.init
index 9018b2e..f5b8660 100644
--- a/olsrd/files/olsrd.init
+++ b/olsrd/files/olsrd.init
@@ -17,15 +17,15 @@ N='
 '
 
 log() {
-	logger -t olsrd -p daemon.info -s "${initscript}: $@"
+	logger -t olsrd -p daemon.info -s "${initscript}: $*"
 }
 
 error() {
-        logger -t olsrd -p daemon.err -s "${initscript}: ERROR: $@"
+        logger -t olsrd -p daemon.err -s "${initscript}: ERROR: $*"
 }
 
 warn() {
-        logger -t olsrd -p daemon.warn -s "${initscript}: WARNING: $@"
+        logger -t olsrd -p daemon.warn -s "${initscript}: WARNING: $*"
 }
 
 validate_varname() {
@@ -124,22 +124,21 @@ olsrd_write_option() {
 		fi
 	fi
 
-	echo -n "${N}$param$option $value"
-
-	return 0
+	printf '%s' "${N}$param$option $value"
 }
 
 olsrd_write_plparam() {
 	local funcname="olsrd_write_plparam"
 	local param="$1"
 	local cfg="$2"
-	validate_varname "$cfg" || return 1
 	local option="$3"
-	validate_varname "$option" || return 1
 	local value="$4"
 	local option_type="$5"
 	local _option oldIFS
 
+	validate_varname "$cfg" || return 1
+	validate_varname "$option" || return 1
+
 	if [ "$option_type" = bool ]; then
 		case "$value" in
 			1|on|true|enabled|yes) value=yes;;
@@ -180,9 +179,7 @@ olsrd_write_plparam() {
 		[ -z "$ifname" ] || value=$ifname
 	fi
 
-	echo -n "${N}${param}PlParam \"$option\" \"$value\""
-
-	return 0
+	printf '%s' "${N}${param}PlParam \"$option\" \"$value\""
 }
 
 config_update_schema() {
@@ -274,7 +271,7 @@ config_write_options() {
 	already_in_schema "speed" && {
 		get_value_for_entry "speed"
 
-		if [ 2>/dev/null $value -gt 0 -a $value -le 20 ]; then
+		if test 2>/dev/null "$value" -gt 0 -a "$value" -le 20 ; then
 			speed="$value"
 		else
 			log "$funcname() Warning: invalid speed-value: '$value' - allowed integers: 1...20, fallback to 6"
@@ -290,30 +287,30 @@ config_write_options() {
 		if [ -n "$speed" ]; then		# like sven-ola freifunk firmware fff-1.7.4
 			case "$schema_entry" in
 				HelloInterval)
-					value="$(( $speed / 2 + 1 )).0"
+					value="$(( speed / 2 + 1 )).0"
 				;;
 				HelloValidityTime)
-					value="$(( $speed * 25 )).0"
+					value="$(( speed * 25 )).0"
 				;;
-				TcInterval)	# todo: not fisheye? -> $(( $speed * 2 ))
-					value=$(( $speed / 2 ))
+				TcInterval)	# todo: not fisheye? -> $(( speed * 2 ))
+					value=$(( speed / 2 ))
 					[ $value -eq 0 ] && value=1
 					value="$value.0"
 				;;
 				TcValidityTime)
-					value="$(( $speed * 100 )).0"
+					value="$(( speed * 100 )).0"
 				;;
 				MidInterval)
-					value="$(( $speed * 5 )).0"
+					value="$(( speed * 5 )).0"
 				;;
 				MidValidityTime)
-					value="$(( $speed * 100 )).0"
+					value="$(( speed * 100 )).0"
 				;;
 				HnaInterval)
-					value="$(( $speed * 2 )).0"
+					value="$(( speed * 2 )).0"
 				;;
 				HnaValidityTime)
-					value="$(( $speed * 25 )).0"
+					value="$(( speed * 25 )).0"
 				;;
 				*)
 					get_value_for_entry "$schema_entry" || continue
@@ -413,12 +410,10 @@ olsrd_write_ipcconnect() {
 
 	[ "$IPCCONNECT_COUNT" -gt 0 ] && return 0
 
-	echo -n "${N}IpcConnect${N}{"
+	printf '%s' "${N}IpcConnect${N}{"
 	config_write_options "$OLSRD_IPCCONNECT_SCHEMA" "$cfg" olsrd_write_option "${T}"
 	echo "${N}}"
 	IPCCONNECT_COUNT=$((IPCCONNECT_COUNT + 1))
-
-	return 0
 }
 
 olsrd_write_hna4() {
@@ -441,11 +436,9 @@ olsrd_write_hna4() {
 		return 0
 	fi
 
-	[ "$HNA4_COUNT" -le 0 ] && echo -n "${N}Hna4${N}{"
-	echo -n "${N}${T}${T}$netaddr $netmask"
+	[ "$HNA4_COUNT" -le 0 ] && printf '%s' "${N}Hna4${N}{"
+	printf '%s' "${N}${T}${T}$netaddr $netmask"
 	HNA4_COUNT=$((HNA4_COUNT + 1))
-
-	return 0
 }
 
 olsrd_write_hna6() {
@@ -468,11 +461,9 @@ olsrd_write_hna6() {
 		return 0
 	fi
 
-	[ "$HNA6_COUNT" -le 0 ] && echo -n "${N}Hna6${N}{"
-	echo -n "${N}${T}${T}$netaddr $prefix"
+	[ "$HNA6_COUNT" -le 0 ] && printf '%s' "${N}Hna6${N}{"
+	printf '%s' "${N}${T}${T}$netaddr $prefix"
 	HNA6_COUNT=$((HNA6_COUNT + 1))
-
-	return 0
 }
 
 find_most_recent_plugin_libary()
@@ -548,7 +539,7 @@ olsrd_write_loadplugin()
 		;;
 	esac
 
-	echo -n "${N}LoadPlugin \"$library\"${N}{"
+	printf '%s' "${N}LoadPlugin \"$library\"${N}{"
 	config_write_options "$OLSRD_LOADPLUGIN_SCHEMA" "$cfg" olsrd_write_plparam "${T}"
 	echo "${N}}"
 }
@@ -589,19 +580,17 @@ olsrd_write_interface() {
 
 	[ -z "$ifnames" ] && return 0
 
-	echo -n "${N}Interface$ifnames${N}{"
+	printf '%s' "${N}Interface$ifnames${N}{"
 	config_write_options "$OLSRD_INTERFACE_SCHEMA" "$cfg" olsrd_write_option "${T}"
 	echo "${N}}"
 	INTERFACES_COUNT=$((INTERFACES_COUNT + 1))
-
-	return 0
 }
 
 olsrd_write_interface_defaults() {
 	local cfg="$1"
 	validate_varname "$cfg" || return 0
 
-	echo -n "${N}InterfaceDefaults$ifnames${N}{"
+	printf '%s' "${N}InterfaceDefaults$ifnames${N}{"
 	config_write_options "$OLSRD_INTERFACE_DEFAULTS_SCHEMA" "$cfg" olsrd_write_option "${T}"
 	echo "${N}}"