livevm: initial commit: a wrapper for qemu

1 files changed, 61 insertions, 0 deletions

diff --git a/.local/bin/livevm b/.local/bin/livevm
new file mode 100755
index 0000000..638386b
--- /dev/null
+++ b/.local/bin/livevm
@@ -0,0 +1,61 @@
+#!/bin/sh
+
+data_dir="${XDG_DATA_HOME:-${HOME}/.local/share}/vm"
+storage="${data_dir}/livevm.qcow2"
+
+# allocate half of available memory and cores to vm
+mem="$(($(cat /proc/meminfo | grep MemAvailable | grep -o '[0-9]*')/2))"
+cores="$(($(nproc)/2))"
+cmd="qemu-system-x86_64 -boot menu=on -enable-kvm -device intel-hda -device hda-duplex -m ${mem}k -cpu host -smp $cores -drive file=$storage"
+
+[ ! -d "${data_dir}" ] &&
+	mkdir -p "${data_dir}"
+[ ! -f "$storage" ] &&
+	qemu-img create -f qcow2 livevm.img 30G
+
+while getopts "wehc:d:" f
+do
+	case "$f" in
+	w)
+		cmd="${cmd} -device qxl -display gtk"
+		;;
+	e)
+		[ ! -f "/usr/share/edk2-ovmf/x64/OVMF_CODE.fd" ] &&
+			die "ovmf not found, install it"
+
+		[ ! -f "${data_dir}/OVMF_VARS.fd" ] &&
+			cp "/usr/share/edk2-ovmf/x64/OVMF_CODE.fd" "${data_dir}/OVMF_VARS.fd"
+
+		cmd="${cmd} -drive if=pflash,format=raw,readonly=on,file=/usr/share/edk2-ovmf/x64/OVMF_CODE.fd"
+		cmd="${cmd} -drive if=pflash,format=raw,file=${data_dir}/OVMF_VARS.fd"
+		;;
+	c)
+		cmd="${cmd} -cdrom ${OPTARG}"
+		;;
+	d)
+		cmd="${cmd} -drive file=${OPTARG}"
+		;;
+	h)
+		cat <<- EOF
+		Usage: ${0##*/} command
+		a wrapper for qemu
+		Commands:
+		  -e	use efi
+		  -w	run wangblows
+		  -c	[cdrom]
+		  -d	[drive]
+		EOF
+		exit
+		;;
+	?)
+		echo "usage: ${0##*/} [ -weh ] [ -c cdrom ] [ -d drive ]"
+		exit 1
+		;;
+	esac
+done
+
+# use virgl by default if wangblows is not set
+[ -n "${cmd##*device qxl*}" ] &&
+	cmd="${cmd} -device virtio-vga-gl -display gtk,gl=on"
+
+eval "$cmd"