public async Task PathMapping()
{
// Verify that file system path mapping works in both directions.
var imagePath = await TestHelper.GetTestImageAsync();
using (var tempFolder = new TempFolder())
{
try
{
Wsl2Proxy.Import(TestHelper.TestDistroName, imagePath, tempFolder.Path);
var distro = new Wsl2Proxy(TestHelper.TestDistroName, user: KubeConst.SysAdminUser);
// Linux --> Windows
Assert.Equal($@"\\wsl$\{distro.Name}\", distro.ToWindowsPath("/"));
Assert.Equal($@"\\wsl$\{distro.Name}\bin\bash", distro.ToWindowsPath("/bin/bash"));
// Windows --> Linux
Assert.Equal("/mnt/c/", distro.ToLinuxPath(@"C:\"));
Assert.Equal("/mnt/c/Program Files/test.exe", distro.ToLinuxPath(@"c:\Program Files\test.exe"));
}
finally
{
TestHelper.RemoveTestDistro();
}
}
}
/// <inheritdoc/>
public override async Task RunAsync(CommandLine commandLine)
{
if (commandLine.HasHelpOption || commandLine.Arguments.Length == 0)
{
Console.WriteLine(usage);
Program.Exit(0);
}
var sourceFolder = commandLine.Arguments.ElementAtOrDefault(0);
var outputPath = commandLine.Arguments.ElementAtOrDefault(1);
var sbGccArgs = new StringBuilder();
if (string.IsNullOrEmpty(sourceFolder) || string.IsNullOrEmpty(outputPath))
{
Console.WriteLine(usage);
Program.Exit(1);
}
foreach (var arg in commandLine.Arguments.Skip(2))
{
sbGccArgs.AppendWithSeparator(arg);
}
// We're going to build this within the distro at [/tmp/wsl-util/GUID] by
// recursively copying the contents of SOURCE-FOLDER to this directory,
// running GCC to build the thing, passing [*.c] to include all of the C
// source files and generating the binary as [output.bin] with the folder.
//
// We're also going to clear the [/tmp/wsl-util] folder first to ensure that we don't
// accumulate any old build files over time and we'll also ensure that
// [gcc] is installed.
var defaultDistro = Wsl2Proxy.GetDefault();
if (string.IsNullOrEmpty(defaultDistro))
{
Console.Error.WriteLine("*** ERROR: There is no default WSL2 distro.");
Program.Exit(1);
}
var distro = new Wsl2Proxy(defaultDistro);
if (!distro.IsDebian)
{
Console.Error.WriteLine($"*** ERROR: Your default WSL2 distro [{distro.Name}] is running: {distro.OSRelease["ID"]}/{distro.OSRelease["ID_LIKE"]}");
Console.Error.WriteLine($" The CRI-O build requires an Debian/Ubuntu based distribution.");
Program.Exit(1);
}
var linuxUtilFolder = LinuxPath.Combine("/", "tmp", "wsl-util");
var linuxBuildFolder = LinuxPath.Combine(linuxUtilFolder, Guid.NewGuid().ToString("d"));
var linuxOutputPath = LinuxPath.Combine(linuxBuildFolder, "output.bin");
var windowsUtilFolder = distro.ToWindowsPath(linuxUtilFolder);
var windowsBuildFolder = distro.ToWindowsPath(linuxBuildFolder);
try
{
// Delete the [/tmp/wsl-util] folder on Linux and the copy the
// source from the Windows side into a fresh distro folder.
NeonHelper.DeleteFolder(windowsUtilFolder);
NeonHelper.CopyFolder(sourceFolder, windowsBuildFolder);
// Install [safe-apt-get] if it's not already present. We're using this
// because it's possible that projects build in parallel and it's possible
// that multiple GCC commands could also be running in parallel.
var linuxSafeAptGetPath = "/usr/bin/safe-apt-get";
var windowsSafeAptGetPath = distro.ToWindowsPath(linuxSafeAptGetPath);
if (!File.Exists(windowsSafeAptGetPath))
{
var resources = Assembly.GetExecutingAssembly().GetResourceFileSystem("WslUtil.Resources");
var toolScript = resources.GetFile("/safe-apt-get.sh").ReadAllText();
// Note that we need to escape all "$" characters in the script
// so the upload script won't attempt to replace any variables
// (with blanks).
toolScript = toolScript.Replace("$", "\\$");
var uploadScript =
$@"
cat <<EOF > {linuxSafeAptGetPath}
{toolScript}
EOF
chmod 754 {linuxSafeAptGetPath}
";
distro.SudoExecuteScript(uploadScript).EnsureSuccess();
}
// Perform the build.
var buildScript =
$@"
set -euo pipefail
safe-apt-get install -yq gcc
cd {linuxBuildFolder}
gcc *.c -o {linuxOutputPath} {sbGccArgs}
";
distro.SudoExecuteScript(buildScript).EnsureSuccess();
// Copy the build output to the Windows output path.
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
NeonHelper.DeleteFile(outputPath);
File.Copy(distro.ToWindowsPath(linuxOutputPath), outputPath);
}
finally
{
// Remove the temporary distro folder.
NeonHelper.DeleteFolder(windowsBuildFolder);
}
await Task.CompletedTask;
}
public async Task UploadFile()
{
// Verify that we can upload a text file to the distribution
// and set its owner and permissions.
var imagePath = await TestHelper.GetTestImageAsync();
using (var tempFolder = new TempFolder())
{
try
{
Wsl2Proxy.Import(TestHelper.TestDistroName, imagePath, tempFolder.Path);
var distro = new Wsl2Proxy(TestHelper.TestDistroName, user: KubeConst.SysAdminUser);
var text =
@"Line 1
Line 2
Line 3
Line 4
";
// Write a file using the defaults to convert CRLF-->LF with
// no special permissions.
distro.UploadFile($"/home/{KubeConst.SysAdminUser}/test1.txt", text, toLinuxText: true);
Assert.Equal("Line 1\nLine 2\nLine 3\nLine 4\n", File.ReadAllText(distro.ToWindowsPath($"/home/{KubeConst.SysAdminUser}/test1.txt")));
var response = distro.SudoExecute("ls", "-l", $"/home/{KubeConst.SysAdminUser}/test1.txt");
response.EnsureSuccess();
Assert.StartsWith("-rw-r--r-- ", response.OutputText);
// Write another file using the leaving the line endings as CRLF
// and some permissions. Also verify that the file is owned by
// the default distro user.
distro.UploadFile($"/home/{KubeConst.SysAdminUser}/test2.txt", text, permissions: "666", toLinuxText: false);
Assert.Equal("Line 1\r\nLine 2\r\nLine 3\r\nLine 4\r\n", File.ReadAllText(distro.ToWindowsPath($"/home/{KubeConst.SysAdminUser}/test2.txt")));
response = distro.SudoExecute("ls", "-l", $"/home/{KubeConst.SysAdminUser}/test2.txt");
response.EnsureSuccess();
Assert.StartsWith("-rw-rw-rw- ", response.OutputText);
Assert.Contains($"{KubeConst.SysAdminUser} {KubeConst.SysAdminUser}", response.OutputText);
}
finally
{
TestHelper.RemoveTestDistro();
}
}
}