Add qemu_multiarch_testing/

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

qemu_multiarch_testing/make-hdc-img.sh

@@ -0,0 +1,30 @@
+#!/bin/sh -ex
+
+mountpoint -q /
+[ ! -e hdc.img.dir ]
+
+cleanup()
+{
+	trap - EXIT
+	if mountpoint -q hdc.img.dir; then
+		umount -d hdc.img.dir
+	fi
+	mountpoint -q hdc.img.dir ||
+		rm -rf hdc.img.dir
+	exit $@
+}
+
+trap 'cleanup $?' EXIT
+trap 'cleanup 1' HUP PIPE INT QUIT TERM
+
+size=$(du -ks hdc.dir | sed -rn 's/^([0-9]+).*/\1/p')
+[ "$size" -gt 0 ]
+
+rm -f hdc.img
+dd if=/dev/zero of=hdc.img count=1 bs=1024 seek=$(($size*2))
+mkfs.ext3 -q -F -b 1024 -i 4096 hdc.img
+tune2fs -c 0 -i 0 hdc.img
+mkdir hdc.img.dir
+mount -o loop hdc.img hdc.img.dir
+cp -a hdc.dir/* hdc.img.dir/
+umount -d hdc.img.dir