public unsafe IChildProcessStateHolder SpawnProcess(
ref ChildProcessStartInfoInternal startInfo,
string resolvedPath,
SafeHandle stdIn,
SafeHandle stdOut,
SafeHandle stdErr)
{
var arguments = startInfo.Arguments;
var environmentVariables = startInfo.EnvironmentVariables;
var workingDirectory = startInfo.WorkingDirectory;
var flags = startInfo.Flags;
Debug.Assert(startInfo.CreateNewConsole || ConsolePal.HasConsoleWindow());
var commandLine = WindowsCommandLineUtil.MakeCommandLine(resolvedPath, arguments ?? Array.Empty <string>(), !flags.HasDisableArgumentQuoting());
var environmentBlock = environmentVariables != null?WindowsEnvironmentBlockUtil.MakeEnvironmentBlock(environmentVariables) : null;
var pseudoConsole = startInfo.CreateNewConsole ? InputWriterOnlyPseudoConsole.Create() : null;
try
{
if (pseudoConsole is { } && flags.HasUseCustomCodePage())
{
ChangeCodePage(pseudoConsole, startInfo.CodePage, workingDirectory);
}
using var inheritableHandleStore = new InheritableHandleStore(3);
var childStdIn = stdIn != null?inheritableHandleStore.Add(stdIn) : null;
var childStdOut = stdOut != null?inheritableHandleStore.Add(stdOut) : null;
var childStdErr = stdErr != null?inheritableHandleStore.Add(stdErr) : null;
Span <IntPtr> inheritableHandles = stackalloc IntPtr[inheritableHandleStore.Count];
inheritableHandleStore.DangerousGetHandles(inheritableHandles);
fixed(IntPtr *pInheritableHandles = inheritableHandles)
{
using var attr = new ProcThreadAttributeList(2);
if (pseudoConsole is { })
public unsafe IChildProcessStateHolder SpawnProcess(
ref ChildProcessStartInfoInternal startInfo,
string resolvedPath,
SafeHandle stdIn,
SafeHandle stdOut,
SafeHandle stdErr)
{
var arguments = startInfo.Arguments;
var environmentVariables = startInfo.EnvironmentVariables;
var workingDirectory = startInfo.WorkingDirectory;
var flags = startInfo.Flags;
Debug.Assert(startInfo.CreateNewConsole || ConsolePal.HasConsoleWindow());
var commandLine = WindowsCommandLineUtil.MakeCommandLine(resolvedPath, arguments ?? Array.Empty <string>(), !flags.HasDisableArgumentQuoting());
var environmentBlock = startInfo.UseCustomEnvironmentVariables ? WindowsEnvironmentBlockUtil.MakeEnvironmentBlock(environmentVariables.Span) : null;
// Objects that need cleanup
InputWriterOnlyPseudoConsole?pseudoConsole = null;
SafeJobObjectHandle? jobObjectHandle = null;
SafeProcessHandle? processHandle = null;
SafeThreadHandle? threadHandle = null;
try
{
pseudoConsole = startInfo.CreateNewConsole ? InputWriterOnlyPseudoConsole.Create() : null;
if (pseudoConsole is not null && flags.HasUseCustomCodePage())
{
ChangeCodePage(pseudoConsole, startInfo.CodePage, workingDirectory);
}
bool killOnClose = startInfo.AllowSignal && WindowsVersion.NeedsWorkaroundForWindows1809;
jobObjectHandle = CreateJobObject(killOnClose, startInfo.DisableWindowsErrorReportingDialog);
using var inheritableHandleStore = new InheritableHandleStore(3);
var childStdIn = stdIn != null?inheritableHandleStore.Add(stdIn) : null;
var childStdOut = stdOut != null?inheritableHandleStore.Add(stdOut) : null;
var childStdErr = stdErr != null?inheritableHandleStore.Add(stdErr) : null;
IntPtr jobObjectHandles = jobObjectHandle.DangerousGetHandle();
Span <IntPtr> inheritableHandles = stackalloc IntPtr[inheritableHandleStore.Count];
inheritableHandleStore.DangerousGetHandles(inheritableHandles);
fixed(IntPtr *pInheritableHandles = inheritableHandles)
{
using var attr = new ProcThreadAttributeList(3);
if (pseudoConsole is not null)
{
attr.UpdatePseudoConsole(pseudoConsole.Handle.DangerousGetHandle());
}
attr.UpdateHandleList(pInheritableHandles, inheritableHandles.Length);
attr.UpdateJobList(&jobObjectHandles, 1);
const int CreationFlags =
Kernel32.CREATE_UNICODE_ENVIRONMENT
| Kernel32.EXTENDED_STARTUPINFO_PRESENT;
int processId;
(processId, processHandle, threadHandle) = InvokeCreateProcess(
commandLine,
CreationFlags,
environmentBlock,
workingDirectory,
childStdIn,
childStdOut,
childStdErr,
attr);
return(new WindowsChildProcessState(processId, processHandle, jobObjectHandle, pseudoConsole, startInfo.AllowSignal));
}
}
catch
{
if (processHandle is not null)
{
Kernel32.TerminateProcess(processHandle, -1);
processHandle.Dispose();
}
pseudoConsole?.Dispose();
jobObjectHandle?.Dispose();
throw;
}
finally
{
threadHandle?.Dispose();
}
}
// Change the code page of the specified pseudo console by invoking chcp.com on it.
private static unsafe void ChangeCodePage(
InputWriterOnlyPseudoConsole pseudoConsole,
int codePage,
string?workingDirectory)
{
var commandLine = new StringBuilder(ChcpPath.Length + 5);
WindowsCommandLineUtil.AppendStringQuoted(commandLine, ChcpPath);
commandLine.Append(' ');
commandLine.Append(codePage.ToString(CultureInfo.InvariantCulture));
using var inheritableHandleStore = new InheritableHandleStore(3);
using var nullDevice = FilePal.OpenNullDevice(FileAccess.ReadWrite);
var childStdIn = inheritableHandleStore.Add(nullDevice);
var childStdOut = inheritableHandleStore.Add(nullDevice);
var childStdErr = inheritableHandleStore.Add(nullDevice);
SafeProcessHandle?processHandle = null;
try
{
Span <IntPtr> inheritableHandles = stackalloc IntPtr[inheritableHandleStore.Count];
inheritableHandleStore.DangerousGetHandles(inheritableHandles);
fixed(IntPtr *pInheritableHandles = inheritableHandles)
{
using var attr = new ProcThreadAttributeList(2);
attr.UpdatePseudoConsole(pseudoConsole.Handle.DangerousGetHandle());
attr.UpdateHandleList(pInheritableHandles, inheritableHandles.Length);
const int CreationFlags =
Kernel32.CREATE_UNICODE_ENVIRONMENT
| Kernel32.EXTENDED_STARTUPINFO_PRESENT;
SafeThreadHandle threadHandle;
(_, processHandle, threadHandle) = InvokeCreateProcess(
commandLine,
CreationFlags,
null,
workingDirectory,
childStdIn,
childStdOut,
childStdErr,
attr);
threadHandle.Dispose();
}
using var waitHandle = new WindowsProcessWaitHandle(processHandle);
waitHandle.WaitOne();
if (!Kernel32.GetExitCodeProcess(processHandle, out var exitCode))
{
throw new Win32Exception();
}
if (exitCode != 0)
{
ThrowHelper.ThrowChcpFailedException(codePage, exitCode, nameof(codePage));
}
}
finally
{
processHandle?.Dispose();
}
}