cpython/PC/w9xpopen.c

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/*
* w9xpopen.c
*
* Serves as an intermediate stub Win32 console application to
* avoid a hanging pipe when redirecting 16-bit console based
* programs (including MS-DOS console based programs and batch
* files) on Window 95 and Windows 98.
*
* This program is to be launched with redirected standard
* handles. It will launch the command line specified 16-bit
* console based application in the same console, forwarding
* it's own redirected standard handles to the 16-bit child.
* AKA solution to the problem described in KB: Q150956.
*/
#define WINDOWS_LEAN_AND_MEAN
#include <windows.h>
const char *usage =
"This program is used by Python's os.pipe function to\n"
"to work around a limitation in Windows 95/98. It is\n"
"not designed to be used as stand-alone program.";
int main(int argc, char *argv[])
{
BOOL bRet;
STARTUPINFO si;
PROCESS_INFORMATION pi;
DWORD exit_code=0;
if (argc != 2) {
MessageBox(NULL, usage, argv[0], MB_OK);
return 1;
}
/* Make child process use this app's standard files. */
ZeroMemory(&si, sizeof si);
si.cb = sizeof si;
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
bRet = CreateProcess(
NULL, argv[1],
NULL, NULL,
TRUE, 0,
NULL, NULL,
&si, &pi
);
if (bRet) {
if (WaitForSingleObject(pi.hProcess, INFINITE) != WAIT_FAILED) {
GetExitCodeProcess(pi.hProcess, &exit_code);
}
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
return exit_code;
}
return 1;
}