init.d/*: check if RC_CACHEDIR is writtable

Bug: #890
Fixes: #936

Author: navi-desu

init.d/consolefont.in

@@ -61,7 +61,7 @@ start()
 	eend $retval
 
 	# Store the font so we can use it ASAP on boot
-	if [ $retval -eq 0 ] && checkpath -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
+	if [ $retval -eq 0 ] && checkpath -W -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
 		mkdir -p "$RC_CACHEDIR"/console
 		setfont -O "$RC_CACHEDIR"/console/font
 	fi

init.d/save-termencoding.in

@@ -23,7 +23,7 @@ start()
 {
 	ebegin "Saving terminal encoding"
 	# Save the encoding for use immediately at boot
-	if checkpath -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
+	if checkpath -W -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
 		mkdir -p "$RC_CACHEDIR"/console
 		if yesno ${unicode:-yes}; then
 			echo "" > "$RC_CACHEDIR"/console/unicode

init.d/savecache.in

@@ -21,7 +21,7 @@ start()
 		fi
 	fi
 
-	if ! checkpath -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
+	if ! checkpath -W -m 0755 -d "$RC_CACHEDIR" 2>/dev/null; then
 		eerror "Unable to save dependency cache"
 		if yesno "${RC_GOINGDOWN}"; then
 			return 0

init.d/termencoding.in

@@ -41,7 +41,7 @@ start()
 	done
 
 	# Save the encoding for use immediately at boot
-	if checkpath -m 0755 -d "$RC_CACHEDIR"; then
+	if checkpath -W -m 0755 -d "$RC_CACHEDIR"; then
 		mkdir -p "$RC_CACHEDIR"/console
 		if yesno ${unicode:-yes}; then
 			echo "" > "$RC_CACHEDIR"/console/unicode