626 lines
25 KiB
C#
626 lines
25 KiB
C#
// Copyright (C) 2025, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Xml.Linq;
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using Duplicati.Proprietary.DiskImage;
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using NUnit.Framework;
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#nullable enable
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namespace Duplicati.UnitTest.DiskImage
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{
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/// <summary>
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/// macOS implementation of <see cref="IDiskImageHelper"/> using hdiutil and standard macOS tools.
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/// </summary>
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internal class MacOSDiskImageHelper : IDiskImageHelper
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{
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/// <summary>
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/// Tracks the last attached disk device path for cleanup.
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/// </summary>
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private string? _lastDiskDevice;
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/// <inheritdoc />
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public string CreateDisk(string imagePath, long sizeB)
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{
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// Ensure the directory exists
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var directory = Path.GetDirectoryName(imagePath);
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if (!string.IsNullOrEmpty(directory) && !Directory.Exists(directory))
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Directory.CreateDirectory(directory);
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// Delete existing image if it exists
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if (File.Exists(imagePath))
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try
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{
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CleanupDisk(imagePath);
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}
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catch
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{
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// Ignore errors during cleanup
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}
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// Create a raw disk image using hdiutil
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// Use UDIF format with "Free Space" filesystem (unformatted)
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var psi = new ProcessStartInfo
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{
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FileName = "hdiutil",
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Arguments = $"create -size {sizeB}b -type UDIF -layout NONE -o \"{imagePath}\"",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using (var process = new Process { StartInfo = psi })
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{
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Failed to create disk image '{imagePath}': {error}");
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}
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// Attach the disk image without mounting
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psi = new ProcessStartInfo
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{
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FileName = "hdiutil",
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Arguments = $"attach -nomount \"{imagePath}\"",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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string diskDevice;
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using (var process = new Process { StartInfo = psi })
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{
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Failed to attach disk image: {error}");
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// Parse the disk device from output (e.g., "/dev/disk4")
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diskDevice = output.Trim().Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).FirstOrDefault()?.Trim()
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?? throw new InvalidOperationException("Failed to get disk device from hdiutil attach output");
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_lastDiskDevice = diskDevice;
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}
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// Return the raw device path for direct I/O
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return diskDevice.Replace("/dev/disk", "/dev/rdisk");
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}
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private string[] GetPartitionNames(string diskIdentifier)
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{
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"list {diskIdentifier}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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process.WaitForExit();
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// Very hardcoded to disks with < 10 partitions and no identifiers with spaces. Should be sufficient for test purposes.
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return output
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.Split('\n')
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.Select(x => x.Trim())
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.Where(x => x.Length > 1 && x[1] == ':')
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.Skip(2)
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.Select(x => x.Split([' '], StringSplitOptions.RemoveEmptyEntries).LastOrDefault())
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.Where(x => x is not null)
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.Select(x => x!)
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.ToArray();
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}
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private string[] GetMountPoints(string diskIdentifier)
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{
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var partitions = GetPartitionNames(diskIdentifier);
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var mountPoints = new System.Collections.Generic.List<string>();
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foreach (var partition in partitions)
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{
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"info /dev/{partition}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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process.WaitForExit();
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var mountLine = output
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.Split('\n')
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.FirstOrDefault(l => l.Trim().StartsWith("Mount Point:"))
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?? throw new InvalidOperationException($"Failed to get mount point for partition {partition} of disk {diskIdentifier}");
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var mountPoint = mountLine.Split([':'], 2)[1].Trim();
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if (!string.IsNullOrEmpty(mountPoint) && mountPoint != "Not mounted")
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mountPoints.Add(mountPoint);
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}
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return [.. mountPoints];
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}
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/// <inheritdoc />
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public string[] InitializeDisk(string diskIdentifier, Proprietary.DiskImage.PartitionTableType tableType, (Proprietary.DiskImage.FileSystemType, long)[] partitions)
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{
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if (tableType == Proprietary.DiskImage.PartitionTableType.Unknown)
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throw new ArgumentException("Invalid partition table type", nameof(tableType));
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// Use diskutil to partition the disk with the specified scheme
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// "Free Space" means no filesystem, just the partition table
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var partitionStrings = partitions.Length > 0 ? partitions.Select(p =>
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{
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var fsType = p.Item1 switch
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{
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Proprietary.DiskImage.FileSystemType.NTFS => throw new NotSupportedException("NTFS is not natively supported on macOS for creating partitions. Use ExFAT or FAT32 instead."),
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Proprietary.DiskImage.FileSystemType.FAT32 => "\"MS-DOS FAT32\"",
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Proprietary.DiskImage.FileSystemType.ExFAT => "ExFAT",
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Proprietary.DiskImage.FileSystemType.HFSPlus => "HFS+",
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Proprietary.DiskImage.FileSystemType.APFS => "APFS",
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_ => throw new ArgumentException($"Unsupported filesystem type on macOS: {p.Item1}", nameof(partitions))
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};
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var sizeArg = p.Item2 > 0 ? $"{p.Item2}" : "0";
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return $"{fsType} \"Partition\" {sizeArg}";
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})
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: ["Free Space \"\" 0"];
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var partitionArgs = string.Join(" ", partitionStrings);
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"partitionDisk {diskIdentifier} {tableType.ToString().ToUpperInvariant()} {partitionArgs}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Failed to initialize disk: {error}");
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if (partitions.Length == 0)
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return [];
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return GetMountPoints(diskIdentifier);
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}
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/// <inheritdoc />
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public string[] Mount(string diskIdentifier)
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{
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// Check if already mounted
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var mountPoints = GetMountPoints(diskIdentifier);
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if (mountPoints.Length > 0)
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return mountPoints;
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// Mount all volumes on the disk
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"mountDisk {diskIdentifier}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Failed to mount disk: {error}");
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// Find the mount points for the mounted partitions
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return GetMountPoints(diskIdentifier);
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}
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public void Unmount(string diskIdentifier)
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{
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// Unmount all volumes on the disk
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"unmountDisk {diskIdentifier}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Failed to mount disk: {error}");
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}
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/// <inheritdoc />
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public void FlushDisk(string diskIdentifier)
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{
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// On macOS, use sync to flush all filesystem buffers
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var psi = new ProcessStartInfo
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{
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FileName = "sync",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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process.WaitForExit();
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}
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/// <inheritdoc />
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public void CleanupDisk(string imagePath, string? diskIdentifier = null)
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{
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if (diskIdentifier is null)
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{
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var psi = new ProcessStartInfo
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{
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FileName = "hdiutil",
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Arguments = $"info",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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{
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throw new InvalidOperationException($"Failed to get hdiutil info: {process.StandardError.ReadToEnd()}");
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}
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diskIdentifier = output
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.Split("================================================")
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.Skip(1) // Skip the header
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.Select(d =>
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{
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var lines = d
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.Split('\n')
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.Select(l => l.Trim())
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.Where(l => l.Length > 0)
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.ToList();
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var imagePathLine = lines.FirstOrDefault(l => l.StartsWith("image-path"));
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if (imagePathLine == null)
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return null;
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var path = imagePathLine.Split([':'], 2)[1].Trim();
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if (!string.Equals(path, imagePath, StringComparison.OrdinalIgnoreCase))
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return null;
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var deviceLine = lines.FirstOrDefault(l => l.StartsWith("/dev/"));
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if (deviceLine == null)
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return null;
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var device = deviceLine
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.Split(['\t'], 2)[0]
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.Trim();
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return device;
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})
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.FirstOrDefault(d => d != null);
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}
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if (diskIdentifier is null)
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throw new InvalidOperationException($"Failed to determine disk identifier for {imagePath} during cleanup");
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try
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{
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"eject {diskIdentifier}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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TestContext.Progress.WriteLine($"Warning: Failed to eject disk {diskIdentifier}: {error}");
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}
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catch (Exception ex)
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{
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TestContext.Progress.WriteLine($"Warning: Failed to detach disk image: {ex.Message}");
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}
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try
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{
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if (File.Exists(imagePath))
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File.Delete(imagePath);
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}
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catch (Exception ex)
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{
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TestContext.Progress.WriteLine($"Warning: Failed to delete disk image file: {ex.Message}");
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}
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}
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/// <inheritdoc />
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public bool HasRequiredPrivileges()
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{
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// On macOS, check if running as root (UID 0)
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try
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{
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var psi = new ProcessStartInfo
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{
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FileName = "id",
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Arguments = "-u",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd().Trim();
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process.WaitForExit();
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if (int.TryParse(output, out int uid))
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{
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return uid == 0;
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}
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}
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catch
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{
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// Ignore errors
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}
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return false;
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}
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/// <inheritdoc />
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public Proprietary.DiskImage.PartitionTableGeometry GetPartitionTable(string diskIdentifier)
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{
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"info {diskIdentifier}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Process diskutil exited with code {process.ExitCode}: {error}");
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var lines = output
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.Split('\n')
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.Select(l => l.Trim())
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.Where(l => l.Length > 0)
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.ToList();
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PartitionTableType tableType = PartitionTableType.Unknown;
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long size = -1;
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int sectorSize = -1;
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foreach (var line in lines)
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{
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var parts = line.Split([':'], 2);
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switch (parts[0].Trim())
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{
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case "Device Node":
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if (!string.Equals(parts[1].Trim(), diskIdentifier, StringComparison.OrdinalIgnoreCase))
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throw new InvalidOperationException($"Disk identifier mismatch in diskutil info output: expected {diskIdentifier}, got {parts[1].Trim()}");
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break;
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case "Content (IOContent)":
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tableType = parts[1].Trim() switch
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{
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"GUID_partition_scheme" => PartitionTableType.GPT,
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"MBR_partition_scheme" => PartitionTableType.MBR,
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_ => PartitionTableType.Unknown
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};
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break;
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case "Disk Size":
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var sizePart = parts[1].Trim().Split(' ').FirstOrDefault();
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var unitPart = parts[1].Trim().Split(' ').Skip(1).FirstOrDefault();
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if (sizePart != null && unitPart != null)
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{
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if (long.TryParse(sizePart, out long parsedSize))
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{
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size = unitPart switch
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{
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"TB" => parsedSize * 1_000_000_000_000,
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"GB" => parsedSize * 1_000_000_000,
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"MB" => parsedSize * 1_000_000,
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"KB" => parsedSize * 1_000,
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"B" => parsedSize,
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_ => -1
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};
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}
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}
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break;
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case "Device Block Size":
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var sectorSizePart = parts[1].Trim().Split(' ').FirstOrDefault();
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if (sectorSizePart != null && int.TryParse(sectorSizePart, out int parsedSectorSize))
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sectorSize = parsedSectorSize;
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break;
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}
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}
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if (tableType == PartitionTableType.Unknown || size == -1 || sectorSize == -1)
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throw new InvalidOperationException($"Failed to retrieve partition table information for disk {diskIdentifier}");
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return new Proprietary.DiskImage.PartitionTableGeometry
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{
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Type = tableType,
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Size = size,
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SectorSize = sectorSize
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// Ignore the rest for now.
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};
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}
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/// <inheritdoc />
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public PartitionGeometry[] GetPartitions(string diskIdentifier)
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{
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var names = GetPartitionNames(diskIdentifier);
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var partitions = new List<PartitionGeometry>();
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foreach (var name in names)
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{
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var psi = new ProcessStartInfo
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{
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FileName = "diskutil",
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Arguments = $"info /dev/{name}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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using var process = new Process { StartInfo = psi };
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process.Start();
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string output = process.StandardOutput.ReadToEnd();
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string error = process.StandardError.ReadToEnd();
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process.WaitForExit();
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if (process.ExitCode != 0)
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throw new InvalidOperationException($"Process diskutil exited with code {process.ExitCode}: {error}");
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var lines = output
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.Split('\n')
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.Select(l => l.Trim())
|
|
.Where(l => l.Length > 0)
|
|
.ToList();
|
|
|
|
PartitionGeometry partition = new()
|
|
{
|
|
Number = int.TryParse(name.AsSpan(name.Length - 1), out int num) ? num : -1,
|
|
Type = PartitionType.Unknown,
|
|
StartOffset = -1,
|
|
Size = -1,
|
|
Name = null,
|
|
FilesystemType = Proprietary.DiskImage.FileSystemType.Unknown,
|
|
VolumeGuid = null,
|
|
TableType = PartitionTableType.Unknown
|
|
};
|
|
|
|
foreach (var line in lines)
|
|
{
|
|
var parts = line.Split([':'], 2);
|
|
switch (parts[0].Trim())
|
|
{
|
|
case "Device Node":
|
|
if (!string.Equals(parts[1].Trim(), $"/dev/{name}", StringComparison.OrdinalIgnoreCase))
|
|
throw new InvalidOperationException($"Partition identifier mismatch in diskutil info output: expected /dev/{name}, got {parts[1].Trim()}");
|
|
break;
|
|
case "Partition Offset":
|
|
var offsetPart = parts[1].Trim().Split(' ').FirstOrDefault();
|
|
if (offsetPart != null && long.TryParse(offsetPart, out long parsedOffset))
|
|
partition.StartOffset = parsedOffset;
|
|
break;
|
|
case "Disk Size":
|
|
var sizePart = parts[1].Trim().Split(' ').FirstOrDefault();
|
|
if (sizePart != null && long.TryParse(sizePart, out long parsedSize))
|
|
partition.Size = parsedSize;
|
|
break;
|
|
case "Volume Name":
|
|
partition.Name = parts[1].Trim();
|
|
break;
|
|
case "File System Personality":
|
|
partition.FilesystemType = parts[1].Trim() switch
|
|
{
|
|
"MS-DOS FAT32" => Proprietary.DiskImage.FileSystemType.FAT32,
|
|
"ExFAT" => Proprietary.DiskImage.FileSystemType.ExFAT,
|
|
"HFS+" => Proprietary.DiskImage.FileSystemType.HFSPlus,
|
|
"APFS" => Proprietary.DiskImage.FileSystemType.APFS,
|
|
_ => Proprietary.DiskImage.FileSystemType.Unknown
|
|
};
|
|
break;
|
|
case "Volume UUID":
|
|
if (Guid.TryParse(parts[1].Trim(), out Guid parsedGuid))
|
|
partition.VolumeGuid = parsedGuid;
|
|
break;
|
|
default:
|
|
// Ignore other lines for now
|
|
break;
|
|
}
|
|
}
|
|
|
|
partitions.Add(partition);
|
|
}
|
|
|
|
return partitions.ToArray();
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public void Dispose()
|
|
{
|
|
// Nothing to dispose
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
}
|
|
}
|