X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-bottom%2F43disable_updateinitramfs;h=44e2d1f8094c62e1eba861e753b6b6194f718c52;hb=29c5edc37612c351083a5a2fbe034dbeb31dfb55;hp=095bf74fde6a00493aceed0da2768c8225a9d539;hpb=d27400ce146c5e3a340eec8f614012ced2ddc29b;p=live-boot-grml.git

diff --git a/scripts/live-bottom/43disable_updateinitramfs b/scripts/live-bottom/43disable_updateinitramfs
index 095bf74..44e2d1f 100755
--- a/scripts/live-bottom/43disable_updateinitramfs
+++ b/scripts/live-bottom/43disable_updateinitramfs
@@ -1,36 +1,73 @@
 #!/bin/sh
-# Fix for LP#150188
 
-PREREQ=""
-DESCRIPTION="Disabling update-initramfs (useless on a live CD)..."
+#set -e
+
+# initramfs-tools header
 
-. /scripts/casper-functions
+PREREQ=""
 
 prereqs()
 {
-       echo "$PREREQ"
+	echo "${PREREQ}"
 }
 
-case $1 in
-# get pre-requisites
-prereqs)
-       prereqs
-       exit 0
-       ;;
+case "${1}" in
+	prereqs)
+		prereqs
+		exit 0
+		;;
 esac
 
-log_begin_msg "$DESCRIPTION"
+# live-initramfs header
+
+. /scripts/live-functions
+
+log_begin_msg "Possibly disabling update-initramfs (useless on a live CD)..."
+
+# live-initramfs script
 
 chroot /root dpkg-divert --add --rename --quiet \
-        /usr/sbin/update-initramfs
-cat > /root/usr/sbin/update-initramfs <<EOF
-#! /bin/sh
+	/usr/sbin/update-initramfs
+
+# Running off a USB disk or other writable media.
+if [ -w /root/cdrom ] && \
+   # rw is guaranteed to be first.
+   grep -q ' /root/cdrom rw[, ]' /proc/self/mountinfo
+then
+
+cat > /root/usr/sbin/update-initramfs << 'EOF'
+#!/bin/sh
+
+set -e
+
+update-initramfs.distrib "$@"
+
+if [ -e /cdrom/live/initrd.lz ]
+then
+	zcat /initrd.img | lzma -9c >/cdrom/live/initrd.lz.new
+	mv /cdrom/live/initrd.lz.new /cdrom/live/initrd.lz
+else
+	cp /initrd.img /cdrom/live/initrd.gz.new
+	mv /cdrom/live/initrd.gz.new /cdrom/live/initrd.gz
+fi
+
+cp /vmlinuz /cdrom/live/vmlinuz.new
+mv /cdrom/live/vmlinuz.new /cdrom/live/vmlinuz
 
-echo "update-initramfs is disabled since running on a live CD"
 exit 0
+EOF
+
+else
 
+cat > /root/usr/sbin/update-initramfs << EOF
+#!/bin/sh
+
+echo "update-initramfs is disabled since running on read-only media"
+exit 0
 EOF
 
-chmod 755 /root/usr/sbin/update-initramfs
+fi
+
+chmod 0755 /root/usr/sbin/update-initramfs
 
 log_end_msg