mirror of
https://github.com/apple/container.git
synced 2026-09-09 09:15:42 +00:00
Danny Canter
f49f668936
- Capitalize containerization. - Wrap "All rights reserved" to a new line. Signed-off-by: Danny Canter <danny_canter@apple.com>
109 lines
3.4 KiB
Swift
109 lines
3.4 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025 Apple Inc. and the Containerization project authors.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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import ContainerizationError
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import Foundation
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#if canImport(Musl)
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import Musl
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private let _mount = Musl.mount
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private let _umount = Musl.umount2
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#elseif canImport(Glibc)
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import Glibc
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private let _mount = Glibc.mount
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private let _umount = Glibc.umount2
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#endif
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/// `Bundle` represents an OCI runtime spec bundle for running
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/// a container.
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public struct Bundle: Sendable {
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public let path: URL
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public var configPath: URL {
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self.path.appending(path: "config.json")
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}
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public var rootfsPath: URL {
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self.path.appending(path: "rootfs")
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}
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public static func create(path: URL, spec: Data) throws -> Bundle {
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try self.init(path: path, spec: spec)
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}
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public static func create(path: URL, spec: ContainerizationOCI.Spec) throws -> Bundle {
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try self.init(path: path, spec: spec)
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}
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public static func load(path: URL) throws -> Bundle {
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try self.init(path: path)
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}
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private init(path: URL) throws {
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let fm = FileManager.default
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if !fm.fileExists(atPath: path.path) {
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throw ContainerizationError(.invalidArgument, message: "no bundle at \(path.path)")
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}
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self.path = path
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}
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// This constructor does not do any validation that data is actually a
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// valid OCI spec.
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private init(path: URL, spec: Data) throws {
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self.path = path
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let fm = FileManager.default
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try fm.createDirectory(
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atPath: self.path.appending(component: "rootfs").path,
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withIntermediateDirectories: true
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)
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try spec.write(to: self.configPath)
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}
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private init(path: URL, spec: ContainerizationOCI.Spec) throws {
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self.path = path
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let fm = FileManager.default
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try fm.createDirectory(
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atPath: self.path.appending(component: "rootfs").path,
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withIntermediateDirectories: true
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)
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let specData = try JSONEncoder().encode(spec)
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try specData.write(to: self.configPath)
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}
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public func delete() throws {
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// Unmount, and then blow away the dir.
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#if os(Linux)
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let rootfs = self.rootfsPath.path
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guard _umount(rootfs, 0) == 0 else {
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throw POSIXError.fromErrno()
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}
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#endif
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// removeItem is recursive so should blow away the rootfs dir inside as well.
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let fm = FileManager.default
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try fm.removeItem(at: self.path)
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}
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public func loadConfig() throws -> ContainerizationOCI.Spec {
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let data = try Data(contentsOf: self.configPath)
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return try JSONDecoder().decode(ContainerizationOCI.Spec.self, from: data)
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}
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}
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