124 lines
2.3 KiB
Bash
Executable file
124 lines
2.3 KiB
Bash
Executable file
#!/bin/bash
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exec_as() {
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local user
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user="$1"
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shift
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if [ "$(whoami)" != "$user" ]; then
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exec sudo -u "$user" "$0" "$@"
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else
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cd || exit
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fi
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}
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exec_as qemu "$@"
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bin=bin
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images=images
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if [ -t 1 ]; then
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cat=src-hilite-lesspipe.sh
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else
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cat='cat'
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fi
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PATH="./${bin}:${PATH}"
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EDITOR="${EDITOR:-nvim}"
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alias ls='ls --color=auto'
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alias exec='exec '
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shopt -s expand_aliases
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umask 027
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perror() {
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>&2 printf '\033[1;31mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
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}
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public_help() {
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local name
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name="$(basename "$0")"
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exec cat << EOF
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${name}: usage:
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${name} active - (default behaviour) list active VMs
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${name} start <VM name> - start a VM
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${name} watch <VM name> - attach VM screen session
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${name} ls - list available VMs
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${name} edit <VM name> - edit VM launching script
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${name} rm <VM name> - delete launch script
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${name} diskls - list available disk images
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${name} diskadd <disk name> <size> - create a disk image
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${name} diskrm <disk name> - delete disk image
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${name} shell - start a shell as user qemu
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${name} help - show this help
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EOF
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}
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error_usage() {
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perror "Invalid usage"
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>&2 public_help
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return 1
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}
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public_start() {
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local vm_name="$1"
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shift
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exec screen -S "$vm_name" "$vm_name" "$@"
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}
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public_watch() {
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exec screen -dr "$1"
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}
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public_active() {
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exec screen -ls
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}
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public_ls() {
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echo "Available machines:"
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exec ls "$bin"
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}
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diskpath() {
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printf "%s.qcow2" "${images}/${1}"
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}
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public_diskadd() {
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exec qemu-img create -f qcow2 "$(diskpath "$1")" "$2"
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}
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public_diskrm() {
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exec rm -vi -- "$(diskpath "$1")"
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}
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public_diskls() {
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echo "Available disks:"
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exec ls "$images"
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}
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public_edit() {
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local file="${bin}/${1}"
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"$EDITOR" "$file"
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exec chmod u+x "$file"
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}
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public_rm() {
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exec rm -vi -- "${bin}/${1}"
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}
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public_shell() {
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exec bash -i
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}
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public_cat() {
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exec "$cat" "${bin}/${1}"
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}
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function="$1"
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shift
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if [ -z "$function" ]; then
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public_active
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elif declare -F | cut -d \ -f 3- | grep '^public_' | sed 's/^public_//' | grep -q "^${function}$"; then
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"public_${function}" "$@"
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else
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error_usage
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fi
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