wehub-resource-sync
84 lines
2.7 KiB
Swift
84 lines
2.7 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2026 Apple Inc. and the Containerization project authors.
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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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#if os(Linux)
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import ContainerizationOS
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import Foundation
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/// A Unix socket for receiving PTY master file descriptors from runc
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final class ConsoleSocket: Sendable {
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private let socket: Socket
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private let socketPath: String
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/// The path to the console socket
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var path: String { socketPath }
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/// Create a new console socket at the specified path
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init(path: String) throws {
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let absPath = path.starts(with: "/") ? path : FileManager.default.currentDirectoryPath + "/" + path
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self.socketPath = absPath
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let pathURL = URL(fileURLWithPath: absPath)
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let dir = pathURL.deletingLastPathComponent().path
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try FileManager.default.createDirectory(
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atPath: dir,
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withIntermediateDirectories: true,
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attributes: nil
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)
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let socketType = try UnixType(path: absPath, unlinkExisting: true)
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self.socket = try Socket(type: socketType)
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try socket.listen()
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}
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/// Create a temporary console socket in the runtime directory
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static func temporary() throws -> ConsoleSocket {
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let tmpDir = "/tmp"
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let socketDir = tmpDir + "/runc-console-\(UUID().uuidString)"
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let socketPath = socketDir + "/console.sock"
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try FileManager.default.createDirectory(
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atPath: socketDir,
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withIntermediateDirectories: true,
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attributes: nil
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)
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let socket = try ConsoleSocket(path: socketPath)
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return socket
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}
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/// Receive the PTY master file descriptor from runc
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func receiveMaster() throws -> Int32 {
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let connection = try socket.accept()
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defer { try? connection.close() }
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return try connection.receiveFileDescriptor()
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}
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/// Close the socket and optionally remove the socket file
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func close() throws {
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try socket.close()
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try FileManager.default.removeItem(atPath: socketPath)
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}
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deinit {
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try? close()
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}
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}
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#endif
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