[patch] Patch to splash_geninitramfs: adds a configurable compression method

splash_geninitramfs-compress.patch (text/plain), 2.68 KB, created by Vince C. on 2013-01-19 20:29:34 UTC

--- old/usr/sbin/splash_geninitramfs	2013-01-19 11:29:55.000000000 +0100
+++ new/usr/sbin/splash_geninitramfs	2013-01-19 21:12:57.280804898 +0100
@@ -29,6 +29,7 @@
   -c, --copy=DIR      copy all necessary files into the specified directory;
                       DIR should point to the root directory of an initramfs
   -o, --overlay=DIR   include the contents of DIR in the initramfs image
+  -z, --compress=ZIP  use compression method ZIP (either of gzip, bzip2, xz)
   -h, --help          show this help message
 
 Options:
@@ -62,6 +63,7 @@
 
 themedir="//etc/splash"
 declare -a themes
+compress=$(type -p gzip)
 mode="h"
 splash_hlp="//sbin/fbcondecor_helper"
 res=""
@@ -71,7 +73,7 @@
 no8bpp=0
 
 args="$@"
-temp=`getopt -l no8bpp,all,generate:,append:,copy:,overlay:,help,verbose,res: a:g:c:r:o:hv "$@"`
+temp=`getopt -l no8bpp,all,generate:,append:,copy:,overlay:,help,verbose,res:,compress: a:g:c:r:o:z:hv "$@"`
 
 if [ $? != 0 ]; then
 	usage; exit 2
@@ -81,15 +83,20 @@
 
 for i ; do
 	case "$i" in
-		-a|--append) 	mode='a'; img="$2"; shift; shift;;
-		-g|--generate)	mode='g'; img="$2"; shift; shift;;
-		-c|--copy)		mode='c'; destdir="$2"; shift; shift;;
-		-h|--help)		usage; exit 2;;
-		-r|--res)		res=${2/,/ }; shift; shift;;
+		-a|--append) 	mode='a'; img="$2"; shift 2;;
+		-g|--generate)	mode='g'; img="$2"; shift 2;;
+		-c|--copy)	mode='c'; destdir="$2"; shift 2;;
+		-h|--help)	usage; exit 2;;
+		-r|--res)	res=${2/,/ }; shift 2;;
 		-v|--verbose)	verbose=$(($verbose + 1)); shift;;
-		-o|--overlay)	overlay="$2"; shift; shift;;
-		--no8bpp)		no8bpp=1; shift;;
-		--)				shift; break;;
+		-o|--overlay)	overlay="$2"; shift 2;;
+		-z|--compress)	case "$2" in
+					xz|bzip2|gzip)	compress=$(type -p $2) || \
+							(echo "Compression type $2 not available." && exit 6);;
+					*)		echo "Unsupported compression type $2."; exit 7;;
+				esac; shift 2;;
+		--no8bpp)	no8bpp=1; shift;;
+		--)		shift; break;;
 		--all)
 				shift;
 				for i in ${themedir}/* ; do
@@ -144,7 +151,7 @@
 if [ "$mode" == "a" ]; then
 	printv "o Unpacking $img.."
 	cp "$img" "${imgdir}"
-	(cd "${imgdir}"; (gunzip -c "$(basename $img)" 2>/dev/null || cat "$(basename $img)") | cpio -idm --no-absolute-filenames --quiet -H newc)
+	(cd "${imgdir}"; ($compress -dc "$(basename $img)" 2>/dev/null || cat "$(basename $img)") | cpio -idm --no-absolute-filenames --quiet -H newc)
 	rm -f "${imgdir}/$(basename $img)"
 fi
 
@@ -234,7 +241,7 @@
 
 printv "o Creating initramfs image.."
 if [ "$mode" == "g" ] || [ "$mode" == "a" ]; then
-	(cd "${imgdir}" ; find . | cpio --quiet -o -H newc | gzip -9 >../img.cpio.gz)
+	(cd "${imgdir}" ; find . | cpio --quiet -o -H newc | $compress -9 >../img.cpio.gz) && \
 	mv "${workdir}/img.cpio.gz" "${img}"
 fi