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#!/bin/sh
# vm is a tool to manage virtual machines.
vm_version='vm-0.1'
unset CDPATH
export LC_ALL=C IFS='
'
add() {
usage 'add name' 'Add a new VM' && return
[ -d "$idir/$1" ] && die "vm $1 already exists in $idir/$1"
init_alpine || die "could not init alpine iso"
mkdir -p "$idir/$1" && cd "$idir/$1" || die "add $1 failed"
pwd
}
del() {
usage 'del name' 'Delete a VM' && return
echo 'not implemented yet'
}
die() { echo "$0: fatal: $@" >&2; exit 1; }
help() {
usage 'help' 'Print this help text' && return
echo "$vm_version
Manage virtual machines
Usage: vm command [options] [args]"
Opth=1; for c in $Cmdlist; do $c; done
}
info() {
usage 'info name' 'Print informations on a VM' && return
echo 'not implemented yet'
}
init() {
:
}
init_alpine() {
mkdir -p "$sdir/alpine" && cd "$sdir/alpine" || die "init alpine failed"
[ -f Makefile ] || cat << \EOT > Makefile
# Do no edit. This file is generated by vm.
# Install a run a native AlpineLinux VM in Apple silicon MacOS
# Check https://alpinelinux.org/downloads for possible upgrades
iso_url = https://dl-cdn.alpinelinux.org/alpine/v3.13/releases/aarch64/alpine-virt-3.13.2-aarch64.iso
iso = $(notdir $(iso_url))
isoinfo ?= /opt/homebrew/bin/isoinfo
all: initrd vmlinux
runiso: initrd vmlinux $(iso)
vftool -k vmlinux -i initrd -d hdd.img -c $(iso)
initrd: $(iso) $(isoinfo)
isoinfo -i $(iso) -J -x /boot/initramfs-virt > $@
vmlinux: $(iso) $(isoinfo)
isoinfo -i $(iso) -J -x /boot/vmlinuz-virt | gunzip > $@
$(iso):
curl -LO $(iso_url) || { rm -f $@; false; }
$(isoinfo):
brew install cdrtools
EOT
make -s all
}
ls() {
usage 'ls' 'list VMs' && return
[ -d "$idir" ] && cd "$idir" || return
for i in *; do
echo "$i"
done
}
runiso() {
usage 'runiso [isoname]' 'run a cdrom iso' && return
init_alpine
make runiso
}
start() {
usage 'start name' 'Start a VM' && return
echo 'not implemented yet'
}
stop() {
usage 'stop name' 'Stop a VM' && return
echo 'not implemented yet'
}
usage() { [ "$Opth" ] && printf " %-34s %s\n" "$1" "$2"; }
version() {
usage 'version' 'Print version' && return
echo "$vm_version"
}
# Main starts here.
pdir="$HOME/.vm"
sdir="$pdir/iso"
edir="$pdir/engine"
idir="$pdir/img"
engines="vftool" # Todo: add qemu (when supported on m1)
isos="alpine" # Todo: add freebsd, openbsd, archlinux, debian, ubuntu, macOS, win10, etc...
Cmdlist='add del info help ls runiso start stop version'
[ "$1" ] && C=$1 && shift 1 || { help; exit 1; }
for c in $Cmdlist
do
case $c in
($C) cmd=$c; break;;
($C*) [ "$cmd" ] && die "ambiguous command $C" || cmd=$c;;
esac
done
[ "$cmd" ] || { help; exit 1; } && $cmd "$@"
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