Backport "supermin: Prevent multilib corruption (RHBZ#558593)" from libguestfs

Make sure the febootstrap-supermin-helper script does not contain
any hard-wired references to the current architecture.

2 files changed, 11 insertions, 7 deletions

diff --git a/febootstrap-supermin-helper.pod b/febootstrap-supermin-helper.pod
index d39d8bd..9ca7ca8 100644
--- a/febootstrap-supermin-helper.pod
+++ b/febootstrap-supermin-helper.pod
@@ -4,7 +4,7 @@ febootstrap-supermin-helper - Reconstruct initramfs from supermin appliance.
 
 =head1 SYNOPSIS
 
- febootstrap-supermin-helper supermin.img hostfiles.txt kernel initrd
+ febootstrap-supermin-helper supermin.img hostfiles.txt host_cpu kernel initrd
 
 =head1 DESCRIPTION
 
@@ -15,12 +15,14 @@ L<febootstrap-to-supermin(8)>.
 
 =head1 PARAMETERS
 
-Of the four parameters, the first two are I<input> files, and the last
+Of the five parameters, the first two are I<input> files, and the last
 two are I<output> files.
 
 C<supermin.img> and C<hostfiles.txt> are the input files which
 describe the supermin appliance.
 
+C<host_cpu> should be the host CPU, eg. C<x86_64> or C<i686>.
+
 C<kernel> and C<initrd> are the temporary output files that this
 script produces.  These output files are meant to be used just for
 booting the appliance, and should be deleted straight afterwards.
diff --git a/febootstrap-supermin-helper.sh b/febootstrap-supermin-helper.sh
index f6a54e6..cd5cf19 100755
--- a/febootstrap-supermin-helper.sh
+++ b/febootstrap-supermin-helper.sh
@@ -32,7 +32,7 @@ eval set -- "$TEMP"
 
 usage ()
 {
-    echo "Usage: febootstrap-supermin-helper supermin.img hostfiles.txt kernel initrd"
+    echo "Usage: febootstrap-supermin-helper supermin.img hostfiles.txt host_cpu kernel initrd"
     echo "Please read febootstrap-supermin-helper(8) man page for more information."
 }
 
@@ -55,7 +55,7 @@ while true; do
     esac
 done
 
-if [ $# -ne 4 ]; then
+if [ $# -ne 5 ]; then
     usage
     exit 1
 fi
@@ -66,9 +66,11 @@ set -e
 supermin="$1"
 hostfiles="$2"
 
+host_cpu=$3
+
 # Output files.
-kernel="$3"
-initrd="$4"
+kernel="$4"
+initrd="$5"
 
 rm -f "$kernel" "$initrd"
 
@@ -80,7 +82,7 @@ rm -f "$kernel" "$initrd"
 # RHEL 5 didn't append the arch to the kernel name, so look for kernels
 # without arch second.
 
-arch=$(echo "@host_cpu@" | sed 's/^i.86$/i?86/')
+arch=$(echo $host_cpu | sed 's/^i.86$/i?86/')
 kernels=$(
     ls -1dvr /boot/vmlinuz-*.$arch* 2>/dev/null | grep -v xen ||: ;
     ls -1dvr /boot/vmlinuz-* 2>/dev/null | grep -v xen