Fail hard on LUKS inclusion error (bug #409277), advise about sys-fs/cryptsetup[static], drop support for cryptsetup binary from /bin/

ChangeLog

@@ -5,6 +5,10 @@
 # Distributed under the GPL v2
 # $Id$
 
+  22 Mar 2012; Sebastian Pipping <sping@gentoo.org> gen_initramfs.sh:
+  Fail hard on LUKS inclusion error (bug #409277), advise about
+  sys-fs/cryptsetup[static], drop support for cryptsetup binary from /bin/
+
   22 Mar 2012; Sebastian Pipping <sping@gentoo.org> gen_funcs.sh,
   gen_initramfs.sh:
   Make errors stand out more

gen_initramfs.sh

@@ -391,6 +391,10 @@ append_overlay(){
 }
 
 append_luks() {
+	local _luks_error_format="LUKS support cannot be included: %s.  Please emerge sys-fs/cryptsetup[static]."
+	local _luks_source=/sbin/cryptsetup
+	local _luks_dest=/sbin/cryptsetup
+
 	if [ -d "${TEMP}/initramfs-luks-temp" ]
 	then
 		rm -r "${TEMP}/initramfs-luks-temp/"
@@ -402,20 +406,15 @@ append_luks() {
 
 	if isTrue ${LUKS}
 	then
-		if is_static /bin/cryptsetup
+		[ -x "${_luks_source}" ] \
-		then
+				|| gen_die "$(printf "${_luks_error_format}" "no file ${_luks_source}")"
-			print_info 1 "Including LUKS support"
+
-			cp /bin/cryptsetup ${TEMP}/initramfs-luks-temp/sbin/cryptsetup
+		is_static "${_luks_source}" \
-			chmod +x "${TEMP}/initramfs-luks-temp/sbin/cryptsetup"
+				|| gen_die "$(printf "${_luks_error_format}" "${_luks_source} not a static binary")"
-		elif is_static /sbin/cryptsetup
+
-		then
+		print_info 1 "Including LUKS support"
-			print_info 1 "Including LUKS support"
+		cp "${_luks_source}" ${TEMP}/initramfs-luks-temp${_luks_dest}
-			cp /sbin/cryptsetup ${TEMP}/initramfs-luks-temp/sbin/cryptsetup
+		chmod +x "${TEMP}/initramfs-luks-temp${_luks_dest}"
-			chmod +x "${TEMP}/initramfs-luks-temp/sbin/cryptsetup"
-		else
-			print_info 1 "LUKS support requires static cryptsetup at /bin/cryptsetup or /sbin/cryptsetup"
-			print_info 1 "Not including LUKS support"
-		fi
 	fi
 
 	find . -print | cpio ${CPIO_ARGS} --append -F "${CPIO}" \