# HG changeset patch
# User Pascal Bellard <pascal.bellard@slitaz.org>
# Date 1259250288 -3600
# Node ID 81f59d88ba122e79fbcc01df51388a6f14badbe2
# Parent  a8ca1e0896fe770609af1ca63a92782ed34099c1
syslinux: add isohybrid (shell version)

diff -r a8ca1e0896fe -r 81f59d88ba12 syslinux-extra/receipt
--- a/syslinux-extra/receipt	Wed Nov 25 10:51:12 2009 +0000
+++ b/syslinux-extra/receipt	Thu Nov 26 16:44:48 2009 +0100
@@ -12,15 +12,15 @@
 # Rules to gen a SliTaz package suitable for Tazpkg.
 genpkg_rules()
 {
-    mkdir -p $fs/usr/share/boot
+    mkdir -p $fs/usr/share/boot $fs/usr/bin $fs/bin
     lzma e $src/memdisk/memdisk $fs/usr/share/boot/memdisk.lzma 2> /dev/null
     cp -a $src/mbr/mbr.bin $fs/usr/share/boot
     lzma e $src/core/pxelinux.0 $fs/usr/share/boot/pxelinux.0.lzma 2> /dev/null
     #lzma e $src/com32/menu/vesamenu.c32 $fs/usr/share/boot/vesamenu.c32.lzma
     #lzma e $src/com32/modules/mboot.c32 $fs/usr/share/boot/mboot.c32.lzma
     cp $src/com32/modules/sdi.c32 $fs/usr/share/boot/
-    mkdir -p $fs/bin
     cp -a $src/linux/syslinux-nomtools $fs/bin/syslinux
     cp -a $src/extlinux/extlinux $fs/bin
+    cp -a $src/isohybrid.sh $fs/usr/bin/isohybrid
     chown root.root $fs/usr/share/boot/* $fs/bin/*
 }
diff -r a8ca1e0896fe -r 81f59d88ba12 syslinux/receipt
--- a/syslinux/receipt	Wed Nov 25 10:51:12 2009 +0000
+++ b/syslinux/receipt	Thu Nov 26 16:44:48 2009 +0100
@@ -16,11 +16,13 @@
 compile_rules()
 {
     cd $src
+    cp ../stuff/tools/isohybrid.sh .
     cp ../stuff/tools/keytab-lilo.pl .
     cp ../stuff/extra/ifmem.c com32/modules
     grep -q ifmem.c32 com32/modules/Makefile ||
 	sed -i 's/ifcpu64.c32/ifcpu64.c32 ifmem.c32/' com32/modules/Makefile
     make -C com32
+    ./isohybrid.sh --build
     for i in /usr/share/kbd/keymaps/i386/*/*.map.gz; do
         [ "$(basename $(dirname $i))" = "include" ] && continue
         j=$(basename $i)
diff -r a8ca1e0896fe -r 81f59d88ba12 syslinux/stuff/tools/isohybrid.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/syslinux/stuff/tools/isohybrid.sh	Thu Nov 26 16:44:48 2009 +0100
@@ -0,0 +1,86 @@
+#!/bin/sh
+
+build="--build"
+if [ "$1" == "$build" ]; then
+	cat  >> $0 <<EOM
+$(uuencode -m mbr/isohdpfx.bin -)
+EOT
+EOM
+	sed -i "/$build/{NNNNNNNNNd}" $0
+	exit
+fi
+
+if [ -z "$1" ]; then
+	cat << EOT
+usage: $0 isoimage
+EOT
+	exit 1
+fi
+iso=$1
+heads=64	# zipdrive-style geometry
+sectors=32
+partype=23	# "Windows hidden IFS"
+
+readiso()
+{
+	dd if=$iso bs=2k skip=$1 count=1 2> /dev/null | \
+	dd bs=1 skip=$2 count=$3 2> /dev/null
+}
+
+# read a 32 bits data
+readlong()
+{
+	readiso $1 $2 4  | hexdump -e '"" 1/4 "%d" "\n"'
+}
+
+# write a 32 bits data
+storelong()
+{
+	printf "00000  %02X %02X %02X %02X \n" \
+		$(( $2 & 255 )) $(( ($2>>8) & 255 )) \
+		$(( ($2>>16) & 255 )) $(( ($2>>24) & 255 )) | \
+	hexdump -R | dd bs=1 conv=notrunc of=$iso seek=$(( $1 )) 2> /dev/null
+}
+
+setmbr()
+{
+	uudecode | dd of=$iso conv=notrunc 2> /dev/null
+	storelong 432 $(( $lba * 4 ))
+	storelong 440 $(( ($RANDOM << 16) + $RANDOM ))
+	storelong 446 $(( 0x80 + ( 1 << 16) ))
+	esect=$(( $sectors + ((($cylinders -1) & 0x300) >> 2) ))
+	ecyl=$(( ($cylinders - 1) & 0xff ))
+	storelong 450 $(( $partype + (($heads - 1) << 8) + ($esect << 16) + ($ecyl <<24) ))
+	storelong 458 $(( $cylinders * $heads * $sectors ))
+	storelong 510 $(( 0xAA55 ))
+}
+
+if [ "$(readiso 17 7 23)" != "EL TORITO SPECIFICATION" ]; then
+	echo "$iso: no boot record found.";
+	exit 1
+fi
+catalog=$(readlong 17 71)
+if [ "$(readiso $catalog 0 32 | md5sum | awk '{ print $1 }')" != \
+     "788e7bfdad52cc6aae525725f24a7f89" ]; then
+	echo "$iso: invalid boot catalog.";
+	exit 1
+fi
+lba=$(readlong $catalog 40)
+if [ $(readlong $lba 64) -ne 1886961915 ]; then
+	echo "$iso: bootloader does not have a isolinux.bin hybrid signature.";
+	exit 1
+fi
+size=$(stat -c "%s" $iso)
+pad=$(( $size % (512 * $heads * $sectors) ))
+[ $pad -eq 0 ] || pad=$((  (512 * $heads * $sectors) - $pad ))
+[ $pad -eq 0 ] || dd if=/dev/zero bs=512 count=$(( $pad / 512 )) >> $iso 2> /dev/null
+cylinders=$(( ($size + $pad) / (512 * $heads * $sectors) ))
+if [ $cylinders -gt 1024 ]; then
+	cat 1>&2 <<EOT
+Warning: more than 1024 cylinders ($cylinders).
+Not all BIOSes will be able to boot this device.
+EOT
+	cylinders=1024
+fi
+
+setmbr <<EOT