Source code of Windows XP (NT5)
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87 lines
2.2 KiB

/*****************************************************************************
*
* pipe.cpp
*
* Run a command, reading its output.
*
*****************************************************************************/
#include "sdview.h"
void ChildProcess::Start(LPCTSTR pszCommand)
{
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
HANDLE hWrite;
BOOL fSuccess = CreatePipe(&_hRead, &hWrite, &sa, 0);
if (fSuccess) {
STARTUPINFO si = { 0 };
PROCESS_INFORMATION pi;
si.cb = sizeof(si);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
si.hStdOutput = hWrite;
// Dup stdout to stderr in case client closes one of them.
if (DuplicateHandle(GetCurrentProcess(), hWrite,
GetCurrentProcess(), &si.hStdError, 0,
TRUE, DUPLICATE_SAME_ACCESS)) {
TCHAR szCommand[MAX_PATH];
lstrcpyn(szCommand, pszCommand, ARRAYSIZE(szCommand));
fSuccess = CreateProcess(NULL, szCommand, NULL, NULL, TRUE,
CREATE_NEW_PROCESS_GROUP | CREATE_NO_WINDOW | DETACHED_PROCESS,
NULL, NULL, &si, &pi);
if (fSuccess) {
CloseHandle(pi.hThread);
_hProcess = pi.hProcess;
_dwPid = pi.dwProcessId;
}
CloseHandle(si.hStdError);
}
CloseHandle(hWrite);
}
}
void ChildProcess::Stop()
{
if (_hProcess) {
CloseHandle(_hProcess);
_hProcess = NULL;
}
if (_hRead) {
CloseHandle(_hRead);
_hRead = NULL;
}
_dwPid = 0;
}
void ChildProcess::Kill()
{
if (_dwPid) {
GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, _dwPid);
}
}
SDChildProcess::SDChildProcess(LPCTSTR pszCommand)
{
String str;
str << QuoteSpaces(GlobalSettings.GetSdPath()) << TEXT(" ") <<
GlobalSettings.GetSdOpts() << TEXT(" ");
if (!GlobalSettings.GetFakeDir().IsEmpty()) {
str << TEXT("-d ") << QuoteSpaces(GlobalSettings.GetFakeDir()) << TEXT(" ");
}
str << pszCommand;
Start(str);
}