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#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright (C) 2026 by Richard Qin
DC_BIND_SPECS=()
DC_BIND_SOURCES=()
DC_BIND_TARGETS=()
DC_BIND_MODES=()
dc_bind_add() {
local spec=$1
local source
local target
local mode
local extra
IFS=: read -r source target mode extra <<< "$spec"
[[ -n "$source" && -n "$target" && -z "$extra" ]] || dc_die "挂载参数格式无效：$spec"
[[ "$source" = /* && "$target" = /* ]] || dc_die "挂载源和目标必须使用绝对路径：$spec"
[[ "$target" != "/" ]] || dc_die '不能把目录挂载到容器根目录。'
mode=${mode:-rw}
[[ "$mode" == rw || "$mode" == ro ]] || dc_die "挂载模式无效：$mode"
source=$(readlink -f -- "$source")
[[ -d "$source" ]] || dc_die "挂载源不是目录：$source"
target=$(readlink -m -- "$target")
[[ "$target" != "/" ]] || dc_die '不能把目录挂载到容器根目录。'
DC_BIND_SPECS+=("$source:$target:$mode")
DC_BIND_SOURCES+=("$source")
DC_BIND_TARGETS+=("$target")
DC_BIND_MODES+=("$mode")
}
dc_bind_load_options() {
while (($# > 0)); do
[[ "$1" == --mount ]] || dc_die '挂载参数格式无效。'
(($# >= 2)) || dc_die '--mount 需要一个挂载参数。'
dc_bind_add "$2"
shift 2
done
}
dc_bind_mount_all() {
local index
local target
for index in "${!DC_BIND_SPECS[@]}"; do
target="$DC_ROOT${DC_BIND_TARGETS[index]}"
mkdir -p "$target"
mount --bind "${DC_BIND_SOURCES[index]}" "$target"
if [[ "${DC_BIND_MODES[index]}" == ro ]]; then
mount -o remount,bind,ro "$target"
fi
done
}
dc_bind_cleanup() {
local index
for ((index = ${#DC_BIND_TARGETS[@]} - 1; index >= 0; index--)); do
umount "$DC_ROOT${DC_BIND_TARGETS[index]}" 2>/dev/null || true
done
}
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