2 * msvcrt.dll spawn/exec functions
4 * Copyright 1996,1998 Marcus Meissner
5 * Copyright 1996 Jukka Iivonen
6 * Copyright 1997,2000 Uwe Bonnes
7 * Copyright 2000 Jon Griffiths
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * -File handles need some special handling. Sometimes children get
25 * open file handles, sometimes not. The docs are confusing
26 * -No check for maximum path/argument/environment size is done
33 #include "msvcrt/errno.h"
35 #include "msvcrt/process.h"
36 #include "msvcrt/stdlib.h"
37 #include "msvcrt/string.h"
39 #include "wine/debug.h"
41 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
43 /* FIXME: Check file extensions for app to run */
44 static const unsigned int EXE = 'e' << 16 | 'x' << 8 | 'e';
45 static const unsigned int BAT = 'b' << 16 | 'a' << 8 | 't';
46 static const unsigned int CMD = 'c' << 16 | 'm' << 8 | 'd';
47 static const unsigned int COM = 'c' << 16 | 'o' << 8 | 'm';
49 /* INTERNAL: Spawn a child process */
50 static int msvcrt_spawn(int flags, const char* exe, char* cmdline, char* env)
53 PROCESS_INFORMATION pi;
55 if (sizeof(HANDLE) != sizeof(int))
56 WARN("This call is unsuitable for your architecture\n");
58 if ((unsigned)flags > _P_DETACH)
60 *MSVCRT__errno() = MSVCRT_EINVAL;
64 FIXME(":must dup/kill streams for child process\n");
66 memset(&si, 0, sizeof(si));
69 if (!CreateProcessA(exe, cmdline, NULL, NULL, TRUE,
70 flags == _P_DETACH ? DETACHED_PROCESS : 0,
73 MSVCRT__set_errno(GetLastError());
80 WaitForSingleObject(pi.hProcess,-1); /* wait forvever */
81 GetExitCodeProcess(pi.hProcess,&pi.dwProcessId);
82 CloseHandle(pi.hProcess);
83 CloseHandle(pi.hThread);
84 return (int)pi.dwProcessId;
86 CloseHandle(pi.hProcess);
91 CloseHandle(pi.hThread);
92 return (int)pi.hProcess;
96 return -1; /* can't reach here */
99 /* INTERNAL: Convert argv list to a single 'delim'-separated string, with an
100 * extra '\0' to terminate it
102 static char* msvcrt_argvtos(const char* const* arg, char delim)
104 const char* const* a;
111 /* Return NULL for an empty environment list */
120 size += strlen(*a) + 1;
124 ret = (char*)MSVCRT_malloc(size + 1);
133 int len = strlen(*a);
139 if (delim && p > ret) p[-1] = 0;
144 /* INTERNAL: Convert va_list to a single 'delim'-separated string, with an
145 * extra '\0' to terminate it
147 static char* msvcrt_valisttos(const char* arg0, va_list alist, char delim)
156 va_copy(alist2,alist);
159 __va_copy(alist2,alist);
167 /* Return NULL for an empty environment list */
175 size += strlen(arg) + 1;
176 arg = va_arg(alist, char*);
177 } while (arg != NULL);
179 ret = (char*)MSVCRT_malloc(size + 1);
187 int len = strlen(arg);
191 arg = va_arg(alist2, char*);
192 } while (arg != NULL);
193 if (delim && p > ret) p[-1] = 0;
198 /*********************************************************************
201 int _cwait(int *status, int pid, int action)
203 HANDLE hPid = (HANDLE)pid;
206 action = action; /* Remove warning */
208 if (!WaitForSingleObject(hPid, -1)) /* wait forever */
213 GetExitCodeProcess(hPid, &stat);
218 doserrno = GetLastError();
220 if (doserrno == ERROR_INVALID_HANDLE)
222 *MSVCRT__errno() = MSVCRT_ECHILD;
223 *__doserrno() = doserrno;
226 MSVCRT__set_errno(doserrno);
228 return status ? *status = -1 : -1;
231 /*********************************************************************
234 * Like on Windows, this function does not handle arguments with spaces
237 int _execl(const char* name, const char* arg0, ...)
244 args = msvcrt_valisttos(arg0, ap, ' ');
247 ret = msvcrt_spawn(_P_OVERLAY, name, args, NULL);
253 /*********************************************************************
256 * Like on Windows, this function does not handle arguments with spaces
259 int _execlp(const char* name, const char* arg0, ...)
264 char fullname[MAX_PATH];
266 _searchenv(name, "PATH", fullname);
269 args = msvcrt_valisttos(arg0, ap, ' ');
272 ret = msvcrt_spawn(_P_OVERLAY, fullname[0] ? fullname : name, args, NULL);
278 /*********************************************************************
281 * Like on Windows, this function does not handle arguments with spaces
284 int _execv(const char* name, char* const* argv)
286 return _spawnve(_P_OVERLAY, name, (const char* const*) argv, NULL);
289 /*********************************************************************
292 * Like on Windows, this function does not handle arguments with spaces
295 int _execve(const char* name, char* const* argv, const char* const* envv)
297 return _spawnve(_P_OVERLAY, name, (const char* const*) argv, envv);
300 /*********************************************************************
301 * _execvpe (MSVCRT.@)
303 * Like on Windows, this function does not handle arguments with spaces
306 int _execvpe(const char* name, char* const* argv, const char* const* envv)
308 char fullname[MAX_PATH];
310 _searchenv(name, "PATH", fullname);
311 return _spawnve(_P_OVERLAY, fullname[0] ? fullname : name,
312 (const char* const*) argv, envv);
315 /*********************************************************************
318 * Like on Windows, this function does not handle arguments with spaces
321 int _execvp(const char* name, char* const* argv)
323 return _execvpe(name, argv, NULL);
326 /*********************************************************************
329 * Like on Windows, this function does not handle arguments with spaces
332 int _spawnl(int flags, const char* name, const char* arg0, ...)
339 args = msvcrt_valisttos(arg0, ap, ' ');
342 ret = msvcrt_spawn(flags, name, args, NULL);
348 /*********************************************************************
349 * _spawnlp (MSVCRT.@)
351 * Like on Windows, this function does not handle arguments with spaces
354 int _spawnlp(int flags, const char* name, const char* arg0, ...)
359 char fullname[MAX_PATH];
361 _searchenv(name, "PATH", fullname);
364 args = msvcrt_valisttos(arg0, ap, ' ');
367 ret = msvcrt_spawn(flags, fullname[0] ? fullname : name, args, NULL);
373 /*********************************************************************
374 * _spawnve (MSVCRT.@)
376 * Like on Windows, this function does not handle arguments with spaces
379 int _spawnve(int flags, const char* name, const char* const* argv,
380 const char* const* envv)
382 char * args = msvcrt_argvtos(argv,' ');
383 char * envs = msvcrt_argvtos(envv,0);
384 const char *fullname = name;
387 FIXME(":not translating name %s to locate program\n",fullname);
388 TRACE(":call (%s), params (%s), env (%s)\n",name,args,envs?"Custom":"Null");
392 ret = msvcrt_spawn(flags, fullname, args, envs);
401 /*********************************************************************
404 * Like on Windows, this function does not handle arguments with spaces
407 int _spawnv(int flags, const char* name, const char* const* argv)
409 return _spawnve(flags, name, argv, NULL);
412 /*********************************************************************
413 * _spawnvpe (MSVCRT.@)
415 * Like on Windows, this function does not handle arguments with spaces
418 int _spawnvpe(int flags, const char* name, const char* const* argv,
419 const char* const* envv)
421 char fullname[MAX_PATH];
422 _searchenv(name, "PATH", fullname);
423 return _spawnve(flags, fullname[0] ? fullname : name, argv, envv);
426 /*********************************************************************
427 * _spawnvp (MSVCRT.@)
429 * Like on Windows, this function does not handle arguments with spaces
432 int _spawnvp(int flags, const char* name, const char* const* argv)
434 return _spawnvpe(flags, name, argv, NULL);
437 /*********************************************************************
440 int MSVCRT_system(const char* cmd)
445 /* Make a writable copy for CreateProcess */
446 cmdcopy=_strdup(cmd);
447 /* FIXME: should probably launch cmd interpreter in COMSPEC */
448 res=msvcrt_spawn(_P_WAIT, NULL, cmdcopy, NULL);
449 MSVCRT_free(cmdcopy);
453 /*********************************************************************
454 * _loaddll (MSVCRT.@)
456 int _loaddll(const char* dllname)
458 return (int)LoadLibraryA(dllname);
461 /*********************************************************************
462 * _unloaddll (MSVCRT.@)
464 int _unloaddll(int dll)
466 if (FreeLibrary((HMODULE)dll))
470 int err = GetLastError();
471 MSVCRT__set_errno(err);