From 19344592966ff1eb1e618a55528ff519eb77c540 Mon Sep 17 00:00:00 2001
From: Marc Fiuczynski <mef@cs.princeton.edu>
Date: Tue, 30 Dec 2008 22:05:34 +0000
Subject: [PATCH] Given a kernel rpm file, this script updates the bootcd with
 a new kernel given a kernel rpm.  This probably should be integrated into
 build.sh.

---
 kupdate.sh | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100755 kupdate.sh

diff --git a/kupdate.sh b/kupdate.sh
new file mode 100755
index 0000000..5ca4b12
--- /dev/null
+++ b/kupdate.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+kernelrpm=$1
+isofsdir=$2
+
+tmpdir=
+files=
+
+bail () 
+{
+    rm -rf $tmpdir $files
+    exit -1
+}
+
+usage ()
+{
+    program=$(basename $0)
+    echo "USAGE:"
+    echo " $program kernel.rpm"
+    echo "   where kernel.rpm is the corresponding rpm files,"
+    echo "   which might live in ./RPMS/..."
+    exit -1
+}
+
+checkrpm ()
+{
+    filename=$1
+    if [ -f "$filename" ] ; then
+	if [ $(rpm -qip $filename | wc -l) -eq 1 ] ; then
+	    echo "$filename not a valid rpm file"
+	    usage
+	fi
+    fi
+}
+
+[ -z "$kernelrpm" ] && usage
+checkrpm $kernelrpm
+
+tmpdir=$(mktemp -d /var/tmp/bootcd.XXXXXX)
+trap "bail" ERR INT
+echo "Updating bootcd image with $kernelrpm"
+pushd $tmpdir
+mkdir bootcd
+pushd bootcd
+gzip -d -c $isofsdir/bootcd.img | cpio -diu
+rm -rf boot/*
+rm -rf lib/modules
+rpm2cpio  $kernelrpm | cpio -diu
+version=$(cd ./boot && ls vmlinuz* | sed 's,vmlinuz-,,')
+depmod -b . $version
+cp boot/vmlinuz* ${tmpdir}/kernel
+find . | cpio --quiet -c -o | gzip -9 > ${tmpdir}/bootcd.img
+popd
+popd
+
+#
+mv ${isofsdir}/kernel ${tmpdir}/kernel.orig
+mv ${isofsdir}/bootcd.img ${tmpdir}/bootcd.img.orig
+
+#
+mv ${tmpdir}/kernel ${isofsdir}/kernel
+mv ${tmpdir}/bootcd.img ${isofsdir}/bootcd.img
+rm -rf $tmpdir
+
+echo " ... done"
+trap - ERR
+exit 0
-- 
2.43.0