96 lines
2.5 KiB
Bash
Executable File
96 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# 2018 Luke Shumaker
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declare -r NAME=osi-run
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declare -r VERSION=20180812
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set -euE
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source "${BASH_SOURCE[0]%/*}/lib/osi.sh"
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main() {
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local arg_mode=outside
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local arg_mountpoint=
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local arg_image=
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local arg_qemu=(
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qemu-system-x86_64
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-machine accel=kvm
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-m 512
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)
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local args
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if ! args="$(getopt -n "${0##*/}" -o hV -l inside:,help,version -- "$@")"; then
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arg_mode=error
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else
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eval "args=($args)"
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set -- "${args[@]}"
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while true; do
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case "$1" in
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--inside) shift; arg_mode=inside; arg_mountpoint=$1; shift;;
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-V|--version) shift; arg_mode=version;;
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-h|--help) shift; arg_mode=usage;;
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--) shift; break;;
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*) error 1 'Internal error. The programmer writing this tool screwed up.';;
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esac
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done
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case "$arg_mode" in
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outside|inside)
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if (( $# != 1 )); then
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if (( $# == 0 )); then
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error 0 "Expected 1 positional argument, got none"
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else
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error 0 "Expected 1 positional argument, got %d: %s" "$#" "${@@Q}"
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fi
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arg_mode=error
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else
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arg_image=$1
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fi
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;;
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esac
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fi
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case "$arg_mode" in
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error) print "Try '%q --help' for more information" "${0##*/}" >&2; return 2;;
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version)
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print "%s (notsystemd) %s" "$NAME" "$VERSION"
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return 0
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;;
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usage)
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print 'Usage: %s [OPTIONS] FILENAME.img < SCRIPT.sh' "${0##*/}"
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print 'Operating System Image: Run Script'
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echo
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print 'OPTIONS:'
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# --inside is internal-only; undocumented
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print ' -h, --help display this help'
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print ' -V, --version output version information'
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return 0
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;;
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# main code starts here
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#
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# We get a little tricky with umount/mount, instead of
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# just calling osi-mount twice, because
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# - want to escalate privileges *only once*
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# - we want osi-mount to be the *only* command we
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# escalate privileges for
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outside)
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arg_mountpoint=$(mktemp -dt -- "${0##*/}.XXXXXXXXXX")
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trap "rmdir -- ${arg_mountpoint@Q}" EXIT
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sudo -- ./osi-mount "$arg_image" "$arg_mountpoint" "${BASH_SOURCE[0]}" --inside="$arg_mountpoint" "${args[@]}"
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;;
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inside) # just keep reading...
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needs_sudo
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install -Dm755 /dev/stdin "$arg_mountpoint/etc/osi-run"
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umount "$arg_mountpoint"
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sudo -u "#${SUDO_UID}" -- "${arg_qemu[@]}" \
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-name "osi-run $arg_image" \
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-drive media=disk,format=raw,if=virtio,file="$arg_image"
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mount "$arg_image" "$arg_mountpoint"
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cat "$arg_mountpoint/var/log/osi-run.out"
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return "$(cat "$arg_mountpoint/var/log/osi-run.status")"
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;;
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*) error 1 'Internal error. The programmer writing this tool screwed up.';;
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esac
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}
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main "$@"
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