src/common/win_process.c

#ifndef lint
static char RCSid[]="$Id$";
#endif
/*
 * Routines to communicate with separate process via dual pipes.
 * Windows version.
 *
 * External symbols declared in standard.h
 */

#include "copyright.h"

#include <stdio.h>
#define STRICT
#include <windows.h> /* typedefs */
#include <io.h>      /* _open_osfhandle */
#include <fcntl.h>   /* _O_XXX */

#include "standard.h"
#include "rtprocess.h"


/* Looks like some Windows versions use negative PIDs.
   Let's just hope they either make them *all* negative, or none.  */
static int system_uses_negative_pids = 0;


/*
    Safely terminate a process by creating a remote thread
    in the process that calls ExitProcess.
        As presented by Andrew Tucker in Windows Developer Magazine.
*/
#ifndef OBSOLETE_WINDOWS  /* won't work on Win 9X/ME/CE. */
BOOL SafeTerminateProcess(HANDLE hProcess, UINT uExitCode)
{
        DWORD dwTID, dwCode, dwErr = 0;
        HANDLE hProcessDup = INVALID_HANDLE_VALUE;
        HANDLE hRT = NULL;
        HINSTANCE hKernel = GetModuleHandle("Kernel32");
        BOOL bSuccess = FALSE;

        BOOL bDup = DuplicateHandle(GetCurrentProcess(), 
                        hProcess, 
                        GetCurrentProcess(), 
                        &hProcessDup, 
                        PROCESS_ALL_ACCESS, 
                        FALSE, 
                        0);
        /* Detect the special case where the process is already dead... */
        if ( GetExitCodeProcess((bDup) ? hProcessDup : hProcess, &dwCode) && 
                        (dwCode == STILL_ACTIVE) ) {
                FARPROC pfnExitProc;
                pfnExitProc = GetProcAddress(hKernel, "ExitProcess");
                hRT = CreateRemoteThread((bDup) ? hProcessDup : hProcess, 
                                NULL, 
                                0, 
                                (LPTHREAD_START_ROUTINE)pfnExitProc,
                                (PVOID)uExitCode, 0, &dwTID);
                if ( hRT == NULL ) dwErr = GetLastError();
        } else {
                dwErr = ERROR_PROCESS_ABORTED;
        }
        if ( hRT ) {
                /* Must wait process to terminate to guarantee that it has exited... */
                WaitForSingleObject((bDup) ? hProcessDup : hProcess, INFINITE);
                CloseHandle(hRT);
                bSuccess = TRUE;
        }
        if ( bDup ) CloseHandle(hProcessDup);
        if ( !bSuccess ) SetLastError(dwErr);
        return bSuccess;
}
#endif


static int
start_process(SUBPROC *proc, char *cmdstr)
{
        BOOL res;
        int Pflags = 0;
        SECURITY_ATTRIBUTES SAttrs;
        STARTUPINFO SInfo;
        PROCESS_INFORMATION PInfo;
        /* welcome to the world of resource handles */
        HANDLE hToChildRead = NULL;
        HANDLE hToChildWrite = NULL;
        HANDLE hFromChildRead = NULL;
        HANDLE hFromChildWrite = NULL;
        HANDLE hRead = NULL, hWrite = NULL;
        HANDLE hStdIn, hStdOut, hStdErr;
        HANDLE hCurProc;

        /* get process and standard stream handles */
        hCurProc = GetCurrentProcess();
        hStdIn = GetStdHandle(STD_INPUT_HANDLE);
        hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
        hStdErr = GetStdHandle(STD_ERROR_HANDLE);
        
        /* the remote pipe handles must be inheritable */
        SAttrs.bInheritHandle = 1;
        SAttrs.lpSecurityDescriptor = NULL;
        SAttrs.nLength = sizeof(SECURITY_ATTRIBUTES);

        /* make pipe, assign to stdout */
        /* we'll check for errors after CreateProcess()...*/
        res = CreatePipe(&hFromChildRead, &hFromChildWrite, &SAttrs, 0);
        res = SetStdHandle(STD_OUTPUT_HANDLE, hFromChildWrite);
        /* create non-inheritable dup of local end */
        res = DuplicateHandle(hCurProc, hFromChildRead, hCurProc, &hRead,
                        0, FALSE, DUPLICATE_SAME_ACCESS);
        CloseHandle(hFromChildRead); hFromChildRead = NULL;

        res = CreatePipe(&hToChildRead, &hToChildWrite, &SAttrs, 0);
        res = SetStdHandle(STD_INPUT_HANDLE, hToChildRead);
        res = DuplicateHandle(hCurProc, hToChildWrite, hCurProc, &hWrite,
                        0, FALSE, DUPLICATE_SAME_ACCESS);
        CloseHandle(hToChildWrite); hToChildWrite = NULL;

        CloseHandle(hCurProc); hCurProc = NULL;

        /* do some bookkeeping for Windows... */
        SInfo.cb = sizeof(STARTUPINFO);
        SInfo.lpReserved = NULL;
        SInfo.lpDesktop = NULL;
        SInfo.lpTitle = NULL;
        SInfo.cbReserved2 = 0;
        SInfo.lpReserved2 = NULL;
        /* don't open a console automatically, pass handles */
        SInfo.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
        SInfo.wShowWindow = SW_HIDE;
        SInfo.hStdInput = hToChildRead;
        SInfo.hStdOutput = hFromChildWrite;
        SInfo.hStdError = hStdErr; /* reuse original stderr */
        
        res = CreateProcess(NULL, /* command name */
                cmdstr, /* full command line */
                NULL,    /* default process attributes */
                NULL,    /* default security attributes */
                1,       /* inherit handles (pass doesn't work reliably) */
                Pflags,  /* process flags */
                NULL,    /* no new environment */
                NULL,    /* stay in current directory */
                &SInfo,
                &PInfo
                );
        /* reset stdin/stdout in any case */
        SetStdHandle(STD_OUTPUT_HANDLE, hStdOut);
        SetStdHandle(STD_INPUT_HANDLE, hStdIn);
        /* Oops... */
        if(res == 0) {
                char es[128];
                _snprintf(es, sizeof(es),
                                "Error creating process (%d)\n", GetLastError());
                eputs(es);
                goto error;
        }
        /* close stuff we don't need */
        CloseHandle(PInfo.hThread);
        CloseHandle(hFromChildWrite); hFromChildWrite = NULL;
        CloseHandle(hToChildRead); hToChildRead = NULL;
        /* get the file descriptors */
        proc->r = _open_osfhandle((long)hRead, _O_RDONLY);
        proc->w = _open_osfhandle((long)hWrite, _O_APPEND);
        proc->pid = PInfo.dwProcessId;
        proc->running = 1;
        CloseHandle(hCurProc);
        /* Windows doesn't tell us the actual buffer size */
        return PIPE_BUF;

error: /* cleanup */
        if(PInfo.hThread) CloseHandle(PInfo.hThread);
        if(hToChildRead) CloseHandle(hToChildRead);
        if(hToChildWrite) CloseHandle(hToChildWrite);
        if(hFromChildRead) CloseHandle(hFromChildRead);
        if(hFromChildWrite) CloseHandle(hFromChildWrite);
        if(hRead) CloseHandle(hRead);
        if(hWrite) CloseHandle(hWrite);
        if(hCurProc) CloseHandle(hCurProc);
        proc->running = 0;
        return 0;
        /* There... Are we happy now? */
}


static int         /* copied size or -1 on error */
wordncopy(         /* copy (quoted) src to dest. */

char * dest,
char * src,
int dlen,
int insert_space,  /* prepend a space  */
int force_dq       /* turn 'src' into "dest" (for Win command line) */
)
{
        int slen;
        int pos = 0;

        slen = strlen(src);
        if (insert_space) {
                if (1 >= dlen) return -1;
                dest[pos++] = ' ';
        }
        if (strpbrk(src, " \f\n\r\t\v")) {
                if (force_dq && src[0] == '\'' && src[slen-1] == '\'') {
                        if (slen + pos + 1 > dlen) return -1;
                        dest[pos++] = '"';
                        strncpy(dest + pos, src + 1, slen -2);
                        pos += slen - 2;
                        dest[pos++] = '"';
                } else if (src[0] == '"' && src[slen-1] == '"') {
                        if (slen + pos + 1 > dlen) return -1;
                        strncpy(dest + pos, src, slen);
                        pos += slen;
                } else {
                        if (slen + pos + 3 > dlen) return -1;
                        dest[pos++] = '"';
                        strncpy(dest + pos, src, slen);
                        pos += slen;
                        dest[pos++] = '"';
                }
        } else {
                if (slen + pos + 1 > dlen) return -1;
                strncpy(dest + pos, src, slen);
                pos += slen;
        }
        dest[pos] = '\0';
        return pos;
}       


static char *
quoted_cmdline(  /* compose command line for StartProcess() as static string */

char *cmdpath,  /* full path to executable */
char *sl[]       /* list of arguments */
)
{
        static char *cmdstr;
        static int clen;
        char *newcs;
        int newlen, pos, res, i;

        newlen = strlen(cmdpath) + 3; /* allow two quotes plus the final \0 */
        for (i = 0; sl[i] != NULL; i++) {
                newlen += strlen(sl[i]) + 3; /* allow two quotes and a space */
        }
        if (cmdstr == NULL) {
                cmdstr = (char *) malloc(newlen);
                if (cmdstr == NULL) return NULL;
        } else if (newlen > clen) {
                newcs = (char *) realloc(cmdstr, newlen);
                if (newcs == NULL) return NULL;
                cmdstr = newcs;
        }
        clen = newlen;
        pos = wordncopy(cmdstr, cmdpath, clen, 0, 1);
        if (pos < 0) return NULL;
        for (i = 0; sl[i] != NULL; i++) {
                res = wordncopy(cmdstr + pos, sl[i], clen - pos, 1, 1);
                if (res < 0) return NULL;
                pos += res;
        }
        return cmdstr;
}


int
open_process(SUBPROC *proc, char *av[])
{
        char *cmdpath;
        char *cmdstr;
        int res;

        proc->running = 0;
        cmdpath = getpath(av[0], getenv("PATH"), X_OK);
        cmdstr = quoted_cmdline(cmdpath, av);
        if (cmdstr == NULL) { return 0; }
        return start_process(proc, cmdstr);
}


int
close_process(SUBPROC *proc) {
        int icres, ocres;
        DWORD pid;
        HANDLE hProc;

        ocres = close(proc->w);
        icres = close(proc->r);
        pid = proc->pid;
        if(ocres != 0 || icres != 0) {
                hProc = OpenProcess(SYNCHRONIZE|PROCESS_TERMINATE, FALSE, pid);
                /* something went wrong: enforce infanticide */
                /* other than that, it looks like we want to ignore errors here */
                if (proc->running) {
                        if(hProc != NULL) {
#ifdef OBSOLETE_WINDOWS
#define KILL_TIMEOUT 10 * 1000 /* milliseconds */
                                /* it might have some windows open... */
                                EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM)pid);
                                if(WaitForSingleObject(hProc, KILL_TIMEOUT)!=WAIT_OBJECT_0) {
                                        /* No way to avoid dangling DLLs here. */
                                        TerminateProcess(hProc, 0);
                                }
#else
                                SafeTerminateProcess(hProc, 0);
#endif
                                /* WaitForSingleObject(hProc, 0); */
                                /* not much use to wait on Windows */
                                CloseHandle(hProc);
                        }
                }
        }
        proc->running = 0;
        return 0; /* XXX we need to figure out more here... */
}


#ifdef TEST_MODULE
int
main( int argc, char **argv )
{
        SUBPROC proc;
        FILE *inf, *outf;
        int res;
        char ret[1024];
        char *command[]= {"word", "gappy word", "\"quoted words\"", "'squoted words'", NULL};

    res = open_process(&proc, command)
        if (res == 0) {
                printf("open_process() failed with return value 0\n");
                return -1;
        }
        printf("process opened with return value: %d, pid: %d,  r: %d,  w: %d\n",
                        res, proc.pid, proc.r, proc.w);
        inf = fdopen(proc.r, "rb");
        outf = fdopen(proc.w, "wb");
        fprintf(outf,"0 0 0 0 1 0\n");
        fflush(outf);
        fgets(ret, sizeof(ret), inf);
        printf("%s\n",ret);
        close_process(&proc);
}
#endif

Revision:	3.1
Committed:	Thu Jun 26 00:58:09 2003 UTC (20 years, 10 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Log Message:	Abstracted process and path handling for Windows. Renamed FLOAT to RREAL because of conflict on Windows. Added conditional compiles for some signal handlers.
#	User	Rev	Content
1	schorsch	3.1	#ifndef lint
2			static char RCSid[]="$Id$";
3			#endif
4			/*
5			* Routines to communicate with separate process via dual pipes.
6			* Windows version.
7			*
8			* External symbols declared in standard.h
9			*/
10
11			#include "copyright.h"
12
13			#include <stdio.h>
14			#define STRICT
15			#include <windows.h> /* typedefs */
16			#include <io.h> /* _open_osfhandle */
17			#include <fcntl.h> /* _O_XXX */
18
19			#include "standard.h"
20			#include "rtprocess.h"
21
22
23			/* Looks like some Windows versions use negative PIDs.
24			Let's just hope they either make them all negative, or none. */
25			static int system_uses_negative_pids = 0;
26
27
28			/*
29			Safely terminate a process by creating a remote thread
30			in the process that calls ExitProcess.
31			As presented by Andrew Tucker in Windows Developer Magazine.
32			*/
33			#ifndef OBSOLETE_WINDOWS /* won't work on Win 9X/ME/CE. */
34			BOOL SafeTerminateProcess(HANDLE hProcess, UINT uExitCode)
35			{
36			DWORD dwTID, dwCode, dwErr = 0;
37			HANDLE hProcessDup = INVALID_HANDLE_VALUE;
38			HANDLE hRT = NULL;
39			HINSTANCE hKernel = GetModuleHandle("Kernel32");
40			BOOL bSuccess = FALSE;
41
42			BOOL bDup = DuplicateHandle(GetCurrentProcess(),
43			hProcess,
44			GetCurrentProcess(),
45			&hProcessDup,
46			PROCESS_ALL_ACCESS,
47			FALSE,
48			0);
49			/* Detect the special case where the process is already dead... */
50			if ( GetExitCodeProcess((bDup) ? hProcessDup : hProcess, &dwCode) &&
51			(dwCode == STILL_ACTIVE) ) {
52			FARPROC pfnExitProc;
53			pfnExitProc = GetProcAddress(hKernel, "ExitProcess");
54			hRT = CreateRemoteThread((bDup) ? hProcessDup : hProcess,
55			NULL,
56			0,
57			(LPTHREAD_START_ROUTINE)pfnExitProc,
58			(PVOID)uExitCode, 0, &dwTID);
59			if ( hRT == NULL ) dwErr = GetLastError();
60			} else {
61			dwErr = ERROR_PROCESS_ABORTED;
62			}
63			if ( hRT ) {
64			/* Must wait process to terminate to guarantee that it has exited... */
65			WaitForSingleObject((bDup) ? hProcessDup : hProcess, INFINITE);
66			CloseHandle(hRT);
67			bSuccess = TRUE;
68			}
69			if ( bDup ) CloseHandle(hProcessDup);
70			if ( !bSuccess ) SetLastError(dwErr);
71			return bSuccess;
72			}
73			#endif
74
75
76			static int
77			start_process(SUBPROC proc, char cmdstr)
78			{
79			BOOL res;
80			int Pflags = 0;
81			SECURITY_ATTRIBUTES SAttrs;
82			STARTUPINFO SInfo;
83			PROCESS_INFORMATION PInfo;
84			/* welcome to the world of resource handles */
85			HANDLE hToChildRead = NULL;
86			HANDLE hToChildWrite = NULL;
87			HANDLE hFromChildRead = NULL;
88			HANDLE hFromChildWrite = NULL;
89			HANDLE hRead = NULL, hWrite = NULL;
90			HANDLE hStdIn, hStdOut, hStdErr;
91			HANDLE hCurProc;
92
93			/* get process and standard stream handles */
94			hCurProc = GetCurrentProcess();
95			hStdIn = GetStdHandle(STD_INPUT_HANDLE);
96			hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
97			hStdErr = GetStdHandle(STD_ERROR_HANDLE);
98
99			/* the remote pipe handles must be inheritable */
100			SAttrs.bInheritHandle = 1;
101			SAttrs.lpSecurityDescriptor = NULL;
102			SAttrs.nLength = sizeof(SECURITY_ATTRIBUTES);
103
104			/* make pipe, assign to stdout */
105			/* we'll check for errors after CreateProcess()...*/
106			res = CreatePipe(&hFromChildRead, &hFromChildWrite, &SAttrs, 0);
107			res = SetStdHandle(STD_OUTPUT_HANDLE, hFromChildWrite);
108			/* create non-inheritable dup of local end */
109			res = DuplicateHandle(hCurProc, hFromChildRead, hCurProc, &hRead,
110			0, FALSE, DUPLICATE_SAME_ACCESS);
111			CloseHandle(hFromChildRead); hFromChildRead = NULL;
112
113			res = CreatePipe(&hToChildRead, &hToChildWrite, &SAttrs, 0);
114			res = SetStdHandle(STD_INPUT_HANDLE, hToChildRead);
115			res = DuplicateHandle(hCurProc, hToChildWrite, hCurProc, &hWrite,
116			0, FALSE, DUPLICATE_SAME_ACCESS);
117			CloseHandle(hToChildWrite); hToChildWrite = NULL;
118
119			CloseHandle(hCurProc); hCurProc = NULL;
120
121			/* do some bookkeeping for Windows... */
122			SInfo.cb = sizeof(STARTUPINFO);
123			SInfo.lpReserved = NULL;
124			SInfo.lpDesktop = NULL;
125			SInfo.lpTitle = NULL;
126			SInfo.cbReserved2 = 0;
127			SInfo.lpReserved2 = NULL;
128			/* don't open a console automatically, pass handles */
129			SInfo.dwFlags = STARTF_USESHOWWINDOW \| STARTF_USESTDHANDLES;
130			SInfo.wShowWindow = SW_HIDE;
131			SInfo.hStdInput = hToChildRead;
132			SInfo.hStdOutput = hFromChildWrite;
133			SInfo.hStdError = hStdErr; /* reuse original stderr */
134
135			res = CreateProcess(NULL, /* command name */
136			cmdstr, /* full command line */
137			NULL, /* default process attributes */
138			NULL, /* default security attributes */
139			1, /* inherit handles (pass doesn't work reliably) */
140			Pflags, /* process flags */
141			NULL, /* no new environment */
142			NULL, /* stay in current directory */
143			&SInfo,
144			&PInfo
145			);
146			/* reset stdin/stdout in any case */
147			SetStdHandle(STD_OUTPUT_HANDLE, hStdOut);
148			SetStdHandle(STD_INPUT_HANDLE, hStdIn);
149			/* Oops... */
150			if(res == 0) {
151			char es[128];
152			_snprintf(es, sizeof(es),
153			"Error creating process (%d)\n", GetLastError());
154			eputs(es);
155			goto error;
156			}
157			/* close stuff we don't need */
158			CloseHandle(PInfo.hThread);
159			CloseHandle(hFromChildWrite); hFromChildWrite = NULL;
160			CloseHandle(hToChildRead); hToChildRead = NULL;
161			/* get the file descriptors */
162			proc->r = _open_osfhandle((long)hRead, _O_RDONLY);
163			proc->w = _open_osfhandle((long)hWrite, _O_APPEND);
164			proc->pid = PInfo.dwProcessId;
165			proc->running = 1;
166			CloseHandle(hCurProc);
167			/* Windows doesn't tell us the actual buffer size */
168			return PIPE_BUF;
169
170			error: /* cleanup */
171			if(PInfo.hThread) CloseHandle(PInfo.hThread);
172			if(hToChildRead) CloseHandle(hToChildRead);
173			if(hToChildWrite) CloseHandle(hToChildWrite);
174			if(hFromChildRead) CloseHandle(hFromChildRead);
175			if(hFromChildWrite) CloseHandle(hFromChildWrite);
176			if(hRead) CloseHandle(hRead);
177			if(hWrite) CloseHandle(hWrite);
178			if(hCurProc) CloseHandle(hCurProc);
179			proc->running = 0;
180			return 0;
181			/* There... Are we happy now? */
182			}
183
184
185			static int /* copied size or -1 on error */
186			wordncopy( /* copy (quoted) src to dest. */
187
188			char * dest,
189			char * src,
190			int dlen,
191			int insert_space, /* prepend a space */
192			int force_dq /* turn 'src' into "dest" (for Win command line) */
193			)
194			{
195			int slen;
196			int pos = 0;
197
198			slen = strlen(src);
199			if (insert_space) {
200			if (1 >= dlen) return -1;
201			dest[pos++] = ' ';
202			}
203			if (strpbrk(src, " \f\n\r\t\v")) {
204			if (force_dq && src[0] == '\'' && src[slen-1] == '\'') {
205			if (slen + pos + 1 > dlen) return -1;
206			dest[pos++] = '"';
207			strncpy(dest + pos, src + 1, slen -2);
208			pos += slen - 2;
209			dest[pos++] = '"';
210			} else if (src[0] == '"' && src[slen-1] == '"') {
211			if (slen + pos + 1 > dlen) return -1;
212			strncpy(dest + pos, src, slen);
213			pos += slen;
214			} else {
215			if (slen + pos + 3 > dlen) return -1;
216			dest[pos++] = '"';
217			strncpy(dest + pos, src, slen);
218			pos += slen;
219			dest[pos++] = '"';
220			}
221			} else {
222			if (slen + pos + 1 > dlen) return -1;
223			strncpy(dest + pos, src, slen);
224			pos += slen;
225			}
226			dest[pos] = '\0';
227			return pos;
228			}
229
230
231
232			static char *
233			quoted_cmdline( /* compose command line for StartProcess() as static string */
234
235			char cmdpath, / full path to executable */
236			char sl[] / list of arguments */
237			)
238			{
239			static char *cmdstr;
240			static int clen;
241			char *newcs;
242			int newlen, pos, res, i;
243
244			newlen = strlen(cmdpath) + 3; /* allow two quotes plus the final \0 */
245			for (i = 0; sl[i] != NULL; i++) {
246			newlen += strlen(sl[i]) + 3; /* allow two quotes and a space */
247			}
248			if (cmdstr == NULL) {
249			cmdstr = (char *) malloc(newlen);
250			if (cmdstr == NULL) return NULL;
251			} else if (newlen > clen) {
252			newcs = (char *) realloc(cmdstr, newlen);
253			if (newcs == NULL) return NULL;
254			cmdstr = newcs;
255			}
256			clen = newlen;
257			pos = wordncopy(cmdstr, cmdpath, clen, 0, 1);
258			if (pos < 0) return NULL;
259			for (i = 0; sl[i] != NULL; i++) {
260			res = wordncopy(cmdstr + pos, sl[i], clen - pos, 1, 1);
261			if (res < 0) return NULL;
262			pos += res;
263			}
264			return cmdstr;
265			}
266
267
268			int
269			open_process(SUBPROC proc, char av[])
270			{
271			char *cmdpath;
272			char *cmdstr;
273			int res;
274
275			proc->running = 0;
276			cmdpath = getpath(av[0], getenv("PATH"), X_OK);
277			cmdstr = quoted_cmdline(cmdpath, av);
278			if (cmdstr == NULL) { return 0; }
279			return start_process(proc, cmdstr);
280			}
281
282
283			int
284			close_process(SUBPROC *proc) {
285			int icres, ocres;
286			DWORD pid;
287			HANDLE hProc;
288
289			ocres = close(proc->w);
290			icres = close(proc->r);
291			pid = proc->pid;
292			if(ocres != 0 \|\| icres != 0) {
293			hProc = OpenProcess(SYNCHRONIZE\|PROCESS_TERMINATE, FALSE, pid);
294			/* something went wrong: enforce infanticide */
295			/* other than that, it looks like we want to ignore errors here */
296			if (proc->running) {
297			if(hProc != NULL) {
298			#ifdef OBSOLETE_WINDOWS
299			#define KILL_TIMEOUT 10 * 1000 /* milliseconds */
300			/* it might have some windows open... */
301			EnumWindows((WNDENUMPROC)TerminateAppEnum, (LPARAM)pid);
302			if(WaitForSingleObject(hProc, KILL_TIMEOUT)!=WAIT_OBJECT_0) {
303			/* No way to avoid dangling DLLs here. */
304			TerminateProcess(hProc, 0);
305			}
306			#else
307			SafeTerminateProcess(hProc, 0);
308			#endif
309			/* WaitForSingleObject(hProc, 0); */
310			/* not much use to wait on Windows */
311			CloseHandle(hProc);
312			}
313			}
314			}
315			proc->running = 0;
316			return 0; /* XXX we need to figure out more here... */
317			}
318
319
320			#ifdef TEST_MODULE
321			int
322			main( int argc, char **argv )
323			{
324			SUBPROC proc;
325			FILE inf, outf;
326			int res;
327			char ret[1024];
328			char *command[]= {"word", "gappy word", "\"quoted words\"", "'squoted words'", NULL};
329
330			res = open_process(&proc, command)
331			if (res == 0) {
332			printf("open_process() failed with return value 0\n");
333			return -1;
334			}
335			printf("process opened with return value: %d, pid: %d, r: %d, w: %d\n",
336			res, proc.pid, proc.r, proc.w);
337			inf = fdopen(proc.r, "rb");
338			outf = fdopen(proc.w, "wb");
339			fprintf(outf,"0 0 0 0 1 0\n");
340			fflush(outf);
341			fgets(ret, sizeof(ret), inf);
342			printf("%s\n",ret);
343			close_process(&proc);
344			}
345			#endif
346