wehub-resource-sync
71 lines
2.0 KiB
Swift
71 lines
2.0 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025-2026 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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import FoundationEssentials
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import LCShim
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#if canImport(Musl)
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import Musl
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private let _close = Musl.close
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#elseif canImport(Glibc)
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import Glibc
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private let _close = Glibc.close
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#endif
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class Console {
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let master: Int32
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let slavePath: String
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init() throws {
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let masterFD = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_CLOEXEC)
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guard masterFD != -1 else {
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throw App.Errno(stage: "open_ptmx")
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}
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guard unlockpt(masterFD) == 0 else {
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throw App.Errno(stage: "unlockpt")
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}
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guard let slavePath = ptsname(masterFD) else {
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throw App.Errno(stage: "ptsname")
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}
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self.master = masterFD
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self.slavePath = String(cString: slavePath)
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}
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func configureStdIO() throws {
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let path = self.slavePath
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let slaveFD = open(path, O_RDWR)
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guard slaveFD != -1 else {
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throw App.Errno(stage: "open_pts")
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}
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defer { _ = _close(slaveFD) }
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for fd: Int32 in 0...2 {
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guard dup3(slaveFD, fd, 0) != -1 else {
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throw App.Errno(stage: "dup3")
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}
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}
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}
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func close() throws {
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guard _close(self.master) == 0 else {
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throw App.Errno(stage: "close")
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}
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}
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}
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