我在从一个非常简单的 c# 或 c++ gui 程序编译为“windows 应用程序”(而不是“控制台应用程序”)执行时遇到 PsExec 挂起。在下面的 C) 部分下,我粘贴了重现问题的代码,在 D) 部分下,我粘贴了 c++ 代码以重现相同的问题。
当 psexec 挂起时,本地附加到 psexec 后的 windbg 输出粘贴在 B) 部分下。
在转储粘贴在 A) 部分下的输出后,我的程序挂起。
如果您将 psexec 命令替换为任何本地命令,则程序可以正常工作,例如 ProcessStartInfo("cmd.exe", "/c dir c:\windows\*.*");
我想知道是否有人经历过它并找到了解决方案。帮助将不胜感激。
谢谢,沙拉杰什
A) psexec 挂起时我的 c# 程序输出
PsExec v1.98 - 远程执行进程 版权所有 (C) 2001-2010 Mark Russinovich Sysinternals - www.sysinternals.com
驱动器 C 中的卷没有标签。
B) 挂起时 psexec 的 Windbg 输出
3 Id: 1614.15e4 Suspend: 1 Teb: 7efac000 Unfrozen ChildEBP RetAddr Args to Child
02a3fe68 75a6d0c5 00000180 00000000 00000000 ntdll!NtReadFile+0x15 (FPO: [9,0,0]) 02a3fecc 75cb18aa 00000180 02a3ff44 00010000 KERNELBASE!ReadFile+0x118 (FPO : [SEH]) 02a3ff14 00403bde 00000180 02a3ff44 00010000 kernel32!ReadFileImplementation+0xf0 (FPO: [SEH]) 警告:堆栈展开信息不可用。以下框架可能是错误的。02a3ff2c 00000000 00291e48 00000000 02a5ff80 psexec+0x3bde
C)重现问题的c#代码
using System;
using System.Windows.Forms;
using System.Diagnostics;
namespace WindowsFormsApplication1 {
static class Program {
static void DataReceiveHandler(object sender, DataReceivedEventArgs e) {
Debug.WriteLine(e.Data);
}
public static void NotWorkingPsExec() {
ProcessStartInfo startInfo = new ProcessStartInfo("psexec.exe",
"\\\\raj-2k3-32 cmd.exe /c dir c:\\windows\\*.*");
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
Process proc = new Process();
proc.StartInfo = startInfo;
proc.ErrorDataReceived += new DataReceivedEventHandler(DataReceiveHandler);
proc.OutputDataReceived += new DataReceivedEventHandler(DataReceiveHandler);
proc.Start();
proc.BeginErrorReadLine();
proc.BeginOutputReadLine();
proc.WaitForExit();
Debug.WriteLine("Exit code = {0}", proc.ExitCode);
}
public static void WorkingPsExec() {
ProcessStartInfo startInfo = new ProcessStartInfo("psexec.exe",
"\\\\raj-2k3-32 cmd.exe /c dir c:\\windows\\*.*");
startInfo.UseShellExecute = false;
Process proc = new Process();
proc.StartInfo = startInfo;
proc.Start();
proc.WaitForExit();
Debug.WriteLine("Exit code = {0}", proc.ExitCode);
}
static void Main() {
NotWorkingPsExec();
//WorkingPsExec(); //If uncommented will work
}
}
}
D)重现问题的c++代码
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <strsafe.h>
HANDLE g_hStdoutRd = NULL;
HANDLE g_hStdoutWr = NULL;
void StartCommand(TCHAR *szCmdline);
void ReadOutput();
void ErrorExit(PTSTR);
int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) {
SECURITY_ATTRIBUTES saAttr;
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE;
saAttr.lpSecurityDescriptor = NULL;
if (!CreatePipe(&g_hStdoutRd, &g_hStdoutWr, &saAttr, 0))
ErrorExit(TEXT("Stdout SetHandleInformation"));
if (!SetHandleInformation(g_hStdoutRd, HANDLE_FLAG_INHERIT, 0))
ErrorExit(TEXT("Stdout SetHandleInformation"));
TCHAR szCmdline[] = TEXT("psexec.exe \\\\raj-2k3-32 cmd.exe /c dir /s c:\\windows\\*.*"); // Not Working
//TCHAR szCmdline[] = TEXT("cmd.exe /c dir /s c:\\windows\\*.*"); // Working
StartCommand(szCmdline);
ReadOutput();
return 0;
}
void StartCommand(TCHAR *szCmdline) {
PROCESS_INFORMATION piProcInfo = {0};
STARTUPINFO siStartInfo = {0};
siStartInfo.cb = sizeof(STARTUPINFO);
siStartInfo.hStdError = g_hStdoutWr;
siStartInfo.hStdOutput = g_hStdoutWr;
siStartInfo.dwFlags |= STARTF_USESTDHANDLES;
BOOL bSuccess = CreateProcess(NULL, szCmdline, NULL, NULL, TRUE, 0, NULL, NULL, &siStartInfo, &piProcInfo);
if (!bSuccess)
ErrorExit(TEXT("CreateProcess"));
else {
CloseHandle(piProcInfo.hProcess);
CloseHandle(piProcInfo.hThread);
}
}
void ReadOutput() {
if (!CloseHandle(g_hStdoutWr))
ErrorExit(TEXT("StdOutWr CloseHandle"));
for (;; ) {
CHAR chBuf[4096] = {0};
DWORD dwRead;
BOOLEAN bSuccess = ReadFile(g_hStdoutRd, chBuf, ARRAYSIZE(chBuf), &dwRead, NULL);
if (!bSuccess || dwRead == 0)
break;
OutputDebugStringA(chBuf);
}
}
void ErrorExit(PTSTR lpszFunction) {
OutputDebugString(lpszFunction);
ExitProcess(1);
}