#!/bin/sh
#
# Description: Lock or unlock dated copies (incs) on BTRFS formatted volumes
# Usage: inc-<lock|unlock> <all|jailname[/inc]>
#

# shellcheck source=./includes
LIBDIR="$(dirname $0)" && . "${LIBDIR}/includes"

lock_status="${1:?}"
target_path="${2:?}"

lock_target() {
    target="${1:?}"
    if is_btrfs "${target}"; then
        btrfs property set -ts "${target}" ro true
        info "Lock ${target}: done".
    else
        info "Lock ${target}: not BTRFS, nothing done".
    fi
}
unlock_target() {
    target="${1:?}"
    if is_btrfs "${target}"; then
        btrfs property set -ts "${target}" ro false
        info "Unlock ${target}: done."
    else
        info "Unlock ${target}: not BTRFS, nothing done."
    fi
}

# this directory test must be quoted,beacause of the probable globbing
if [ -d ${target_path} ]; then
    if [ "${lock_status}" = "on" ]; then
        lock_target "${target_path}"
    elif [ "${lock_status}" = "off" ]; then
        unlock_target "${target_path}"
    else
        error "Unknown lock status \`${lock_status}'."
        exit 1
    fi
else
    error "\`${target_path}': no such file or directory."
    exit 1
fi