private static async Task EnsureFormatted(Partition partition, string label, FileSystemFormat fileSystemFormat)
{
var volume = await partition.GetVolume();
if (volume == null)
{
throw new ApplicationException($"Couldn't get volume for {partition}");
}
await volume.Mount();
if (Directory.EnumerateFileSystemEntries(volume.Root).Count() > 1)
{
throw new ApplicationException("The format operation failed. The drive shouldn't contain any file after the format");
}
var sameLabel = string.Equals(volume.Label, label);
var sameFileSystemFormat = Equals(volume.FileSytemFormat, fileSystemFormat);
if (!sameLabel || !sameFileSystemFormat)
{
Log.Verbose("Same label? {Value}. Same file system format? {Value}", sameLabel, sameFileSystemFormat);
throw new ApplicationException("The format operation failed");
}
}
private async Task <Volume> GetVolumeCore(Partition partition)
{
Log.Debug("Getting volume of {Partition}", partition);
var results = await ps.ExecuteCommand("Get-Volume",
("Partition", await GetPsPartition(partition)));
var result = results.FirstOrDefault()?.ImmediateBaseObject;
if (result == null)
{
throw new ApplicationException($"Cannot get volume for {partition}");
}
var vol = new Volume(partition)
{
Partition = partition,
Size = new ByteSize(Convert.ToUInt64(result.GetPropertyValue("Size"))),
Label = (string)result.GetPropertyValue("FileSystemLabel"),
Letter = (char?)result.GetPropertyValue("DriveLetter"),
FileSytemFormat = FileSystemFormat.FromString((string)result.GetPropertyValue("FileSystem")),
};
Log.Debug("Obtained {Volume}", vol);
return(vol);
}
public async Task AssignDriveLetter(Partition partition, char driveLetter)
{
await Observable
.Defer(() => Observable
.FromAsync(() => ChangeDriveLetterCore(partition, driveLetter)))
.RetryWithBackoffStrategy(5);
Log.Debug("{Partition} mounted successfully as driver letter {Letter}", partition, driveLetter);
}
public async Task RemovePartition(Partition partition)
{
Log.Verbose("Removing {Partition}", partition);
using (var c = await GptContextFactory.Create(partition.Disk.Number, FileAccess.ReadWrite))
{
var gptPart = c.Find(partition.Guid);
c.Delete(gptPart);
}
await partition.Disk.Refresh();
}
private async Task ChangeDriveLetterCore(Partition partition, char driveLetter)
{
Log.Debug("Assigning drive letter {Letter} to {Partition}", driveLetter, partition);
var psPart = await GetPsPartition(partition);
await ps.ExecuteCommand("Set-Partition",
("InputObject", psPart),
("NewDriveLetter", driveLetter));
Log.Debug("Ensuring the volume is mounted...");
EnsurePathExists($"{driveLetter}:\\");
}
private async Task <PSObject> GetPsPartition(Partition partition)
{
var psDataCollection = await ps.ExecuteScript($"Get-Partition -DiskNumber {partition.Disk.Number} | where -Property Guid -eq '{{{partition.Guid}}}'");
var psPartition = psDataCollection.FirstOrDefault();
if (psPartition == null)
{
await partition.Disk.Refresh();
throw new ApplicationException($"Could not get PS Partition for {partition}");
}
return(psPartition);
}
public async Task Clean(IPhone toClean)
{
Log.Information("Performing partition cleanup");
disk = await toClean.GetDeviceDisk();
dataPartition = await disk.GetPartitionByName(PartitionName.Data);
await RemoveAnyPartitionsAfterData();
await EnsureDataIsLastPartition();
Log.Information("Cleanup done");
await disk.Refresh();
}
private async Task FormatCore(Partition partition, FileSystemFormat fileSystemFormat, string label = null)
{
label = label ?? partition.Name ?? "";
Log.Verbose(@"Formatting {Partition} as {Format} labeled as ""{Label}""", partition, fileSystemFormat, label);
var part = await GetPsPartition(partition);
await ps.ExecuteCommand("Format-Volume",
("Partition", part),
("Force", null),
("Confirm", false),
("FileSystem", fileSystemFormat.Moniker),
("NewFileSystemLabel", label)
);
await EnsureFormatted(partition, label, fileSystemFormat);
}
public async Task SetGptType(Partition partition, PartitionType partitionType)
{
Log.Verbose("Setting new GPT partition type {Type} to {Partition}", partitionType, partition);
if (Equals(partition.PartitionType, partitionType))
{
return;
}
using (var context = await GptContextFactory.Create(partition.Disk.Number, FileAccess.ReadWrite, GptContext.DefaultBytesPerSector, GptContext.DefaultChunkSize))
{
var part = context.Find(partition.Guid);
part.PartitionType = partitionType;
}
await partition.Disk.Refresh();
Log.Verbose("New GPT type set correctly", partitionType, partition);
}
public async Task Clean(IPhone toClean)
{
Log.Information("Performing partition cleanup");
disk = await toClean.GetDeviceDisk();
dataPartition = await disk.GetPartition(PartitionName.Data);
if (dataPartition == null)
{
Log.Verbose("Data partition not found. Skipping cleanup.");
return;
}
await RemoveAnyPartitionsAfterData();
await EnsureDataIsLastPartition();
Log.Information("Cleanup done");
await disk.Refresh();
}
public async Task ResizePartition(Partition partition, ByteSize size)
{
if (size.MegaBytes < 0)
{
throw new InvalidOperationException($"The partition size cannot be negative: {size}");
}
var sizeBytes = (ulong)size.Bytes;
Log.Verbose("Resizing partition {Partition} to {Size}", partition, size);
var psPart = await GetPsPartition(partition);
await ps.ExecuteCommand("Resize-Partition",
("InputObject", psPart),
("Size", sizeBytes));
if (ps.HadErrors)
{
Throw("The resize operation has failed");
}
}
public async Task Format(Partition partition, FileSystemFormat fileSystemFormat, string label = null)
{
await Observable.FromAsync(() => FormatCore(partition, fileSystemFormat, label)).RetryWithBackoffStrategy(4);
}
public async Task <Volume> GetVolume(Partition partition)
{
return(await Observable.FromAsync(() => GetVolumeCore(partition)).RetryWithBackoffStrategy(4));
}