696 lines
17 KiB
C
696 lines
17 KiB
C
/*
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* msvcrt.dll spawn/exec functions
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* FIXME:
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* -File handles need some special handling. Sometimes children get
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* open file handles, sometimes not. The docs are confusing
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* -No check for maximum path/argument/environment size is done
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*/
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#include "config.h"
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#include <stdarg.h>
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#include "msvcrt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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/* INTERNAL: Spawn a child process */
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static MSVCRT_intptr_t msvcrt_spawn(int flags, const char* exe, char* cmdline, char* env)
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{
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STARTUPINFOA si;
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PROCESS_INFORMATION pi;
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if ((unsigned)flags > MSVCRT__P_DETACH)
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{
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return -1;
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}
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memset(&si, 0, sizeof(si));
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si.cb = sizeof(si);
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msvcrt_create_io_inherit_block(&si);
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if (!CreateProcessA(exe, cmdline, NULL, NULL, TRUE,
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flags == MSVCRT__P_DETACH ? DETACHED_PROCESS : 0,
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env, NULL, &si, &pi))
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{
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msvcrt_set_errno(GetLastError());
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MSVCRT_free(si.lpReserved2);
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return -1;
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}
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MSVCRT_free(si.lpReserved2);
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switch(flags)
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{
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case MSVCRT__P_WAIT:
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WaitForSingleObject(pi.hProcess, INFINITE);
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GetExitCodeProcess(pi.hProcess,&pi.dwProcessId);
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CloseHandle(pi.hProcess);
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CloseHandle(pi.hThread);
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return pi.dwProcessId;
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case MSVCRT__P_DETACH:
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CloseHandle(pi.hProcess);
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pi.hProcess = 0;
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/* fall through */
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case MSVCRT__P_NOWAIT:
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case MSVCRT__P_NOWAITO:
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CloseHandle(pi.hThread);
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return (MSVCRT_intptr_t)pi.hProcess;
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case MSVCRT__P_OVERLAY:
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MSVCRT__exit(0);
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}
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return -1; /* can't reach here */
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}
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/* INTERNAL: Convert argv list to a single 'delim'-separated string, with an
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* extra '\0' to terminate it
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*/
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static char* msvcrt_argvtos(const char* const* arg, char delim)
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{
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const char* const* a;
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long size;
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char* p;
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char* ret;
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if (!arg && !delim)
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{
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/* Return NULL for an empty environment list */
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return NULL;
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}
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/* get length */
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a = arg;
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size = 0;
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while (*a)
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{
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size += strlen(*a) + 1;
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a++;
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}
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ret = (char*)MSVCRT_malloc(size + 1);
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if (!ret)
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return NULL;
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/* fill string */
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a = arg;
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p = ret;
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while (*a)
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{
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int len = strlen(*a);
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memcpy(p,*a,len);
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p += len;
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*p++ = delim;
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a++;
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}
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if (delim && p > ret) p[-1] = 0;
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else *p = 0;
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return ret;
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}
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/* INTERNAL: Convert va_list to a single 'delim'-separated string, with an
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* extra '\0' to terminate it
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*/
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static char* msvcrt_valisttos(const char* arg0, va_list alist, char delim)
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{
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va_list alist2;
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long size;
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const char *arg;
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char* p;
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char *ret;
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#ifdef HAVE_VA_COPY
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va_copy(alist2,alist);
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#else
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# ifdef HAVE___VA_COPY
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__va_copy(alist2,alist);
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# else
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alist2 = alist;
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# endif
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#endif
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if (!arg0 && !delim)
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{
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/* Return NULL for an empty environment list */
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return NULL;
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}
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/* get length */
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arg = arg0;
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size = 0;
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do {
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size += strlen(arg) + 1;
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arg = va_arg(alist, char*);
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} while (arg != NULL);
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ret = (char*)MSVCRT_malloc(size + 1);
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if (!ret)
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return NULL;
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/* fill string */
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arg = arg0;
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p = ret;
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do {
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int len = strlen(arg);
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memcpy(p,arg,len);
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p += len;
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*p++ = delim;
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arg = va_arg(alist2, char*);
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} while (arg != NULL);
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if (delim && p > ret) p[-1] = 0;
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else *p = 0;
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return ret;
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}
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/*********************************************************************
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* _cwait (MSVCRT.@)
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*/
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MSVCRT_intptr_t _cwait(int *status, MSVCRT_intptr_t pid, int action)
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{
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HANDLE hPid = (HANDLE)pid;
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int doserrno;
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action = action; /* Remove warning */
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if (!WaitForSingleObject(hPid, INFINITE))
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{
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if (status)
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{
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DWORD stat;
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GetExitCodeProcess(hPid, &stat);
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*status = (int)stat;
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}
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return pid;
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}
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doserrno = GetLastError();
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if (doserrno == ERROR_INVALID_HANDLE)
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{
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*MSVCRT__errno() = MSVCRT_ECHILD;
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*MSVCRT___doserrno() = doserrno;
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}
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else
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msvcrt_set_errno(doserrno);
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return status ? *status = -1 : -1;
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}
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/*********************************************************************
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* _execl (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execl(const char* name, const char* arg0, ...)
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{
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va_list ap;
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char * args;
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MSVCRT_intptr_t ret;
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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ret = msvcrt_spawn(MSVCRT__P_OVERLAY, name, args, NULL);
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MSVCRT_free(args);
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return ret;
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}
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/*********************************************************************
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* _execle (MSVCRT.@)
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*/
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MSVCRT_intptr_t _execle(const char* name, const char* arg0, ...)
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{
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FIXME("stub\n");
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return -1;
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}
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/*********************************************************************
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* _execlp (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execlp(const char* name, const char* arg0, ...)
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{
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va_list ap;
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char * args;
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MSVCRT_intptr_t ret;
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char fullname[MAX_PATH];
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_searchenv(name, "PATH", fullname);
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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ret = msvcrt_spawn(MSVCRT__P_OVERLAY, fullname[0] ? fullname : name, args, NULL);
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MSVCRT_free(args);
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return ret;
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}
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/*********************************************************************
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* _execlpe (MSVCRT.@)
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*/
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MSVCRT_intptr_t _execlpe(const char* name, const char* arg0, ...)
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{
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FIXME("stub\n");
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return -1;
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}
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/*********************************************************************
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* _execv (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execv(const char* name, char* const* argv)
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{
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return _spawnve(MSVCRT__P_OVERLAY, name, (const char* const*) argv, NULL);
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}
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/*********************************************************************
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* _execve (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execve(const char* name, char* const* argv, const char* const* envv)
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{
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return _spawnve(MSVCRT__P_OVERLAY, name, (const char* const*) argv, envv);
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}
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/*********************************************************************
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* _execvpe (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execvpe(const char* name, char* const* argv, const char* const* envv)
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{
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char fullname[MAX_PATH];
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_searchenv(name, "PATH", fullname);
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return _spawnve(MSVCRT__P_OVERLAY, fullname[0] ? fullname : name,
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(const char* const*) argv, envv);
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}
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/*********************************************************************
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* _execvp (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _execvp(const char* name, char* const* argv)
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{
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return _execvpe(name, argv, NULL);
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}
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/*********************************************************************
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* _spawnl (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnl(int flags, const char* name, const char* arg0, ...)
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{
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va_list ap;
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char * args;
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MSVCRT_intptr_t ret;
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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ret = msvcrt_spawn(flags, name, args, NULL);
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MSVCRT_free(args);
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return ret;
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}
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/*********************************************************************
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* _spawnle (MSVCRT.@)
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*/
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MSVCRT_intptr_t _spawnle(int flags, const char* name, const char* arg0, ...)
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{
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va_list ap;
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char *args, *envs = NULL;
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const char * const *envp;
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MSVCRT_intptr_t ret;
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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va_start(ap, arg0);
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while (va_arg( ap, char * ) != NULL) /*nothing*/;
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envp = va_arg( ap, const char * const * );
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if (envp) envs = msvcrt_argvtos(envp, 0);
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va_end(ap);
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ret = msvcrt_spawn(flags, name, args, envs);
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MSVCRT_free(args);
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if (envs) MSVCRT_free(envs);
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return ret;
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}
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/*********************************************************************
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* _spawnlp (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnlp(int flags, const char* name, const char* arg0, ...)
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{
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va_list ap;
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char * args;
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MSVCRT_intptr_t ret;
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char fullname[MAX_PATH];
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_searchenv(name, "PATH", fullname);
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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ret = msvcrt_spawn(flags, fullname[0] ? fullname : name, args, NULL);
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MSVCRT_free(args);
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return ret;
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}
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/*********************************************************************
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* _spawnlpe (MSVCRT.@)
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*/
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MSVCRT_intptr_t _spawnlpe(int flags, const char* name, const char* arg0, ...)
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{
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va_list ap;
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char *args, *envs = NULL;
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const char * const *envp;
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MSVCRT_intptr_t ret;
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char fullname[MAX_PATH];
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_searchenv(name, "PATH", fullname);
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va_start(ap, arg0);
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args = msvcrt_valisttos(arg0, ap, ' ');
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va_end(ap);
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va_start(ap, arg0);
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while (va_arg( ap, char * ) != NULL) /*nothing*/;
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envp = va_arg( ap, const char * const * );
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if (envp) envs = msvcrt_argvtos(envp, 0);
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va_end(ap);
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ret = msvcrt_spawn(flags, fullname[0] ? fullname : name, args, envs);
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MSVCRT_free(args);
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if (envs) MSVCRT_free(envs);
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return ret;
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}
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/*********************************************************************
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* _spawnve (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnve(int flags, const char* name, const char* const* argv,
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const char* const* envv)
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{
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char * args = msvcrt_argvtos(argv,' ');
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char * envs = msvcrt_argvtos(envv,0);
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char fullname[MAX_PATH];
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const char *p;
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int len;
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MSVCRT_intptr_t ret = -1;
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TRACE(":call (%s), params (%s), env (%s)\n",debugstr_a(name),debugstr_a(args),
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envs?"Custom":"Null");
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/* no check for NULL name.
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native doesn't do it */
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p = memchr(name, '\0', MAX_PATH);
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if( !p )
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p = name + MAX_PATH - 1;
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len = p - name;
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/* extra-long names are silently truncated. */
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memcpy(fullname, name, len);
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for( p--; p >= name; p-- )
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{
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if( *p == '\\' || *p == '/' || *p == ':' || *p == '.' )
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break;
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}
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/* if no extension is given, assume .exe */
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if( (p < name || *p != '.') && len <= MAX_PATH - 5 )
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{
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FIXME("only trying .exe when no extension given\n");
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memcpy(fullname+len, ".exe", 4);
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len += 4;
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}
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fullname[len] = '\0';
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if (args)
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{
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ret = msvcrt_spawn(flags, fullname, args, envs);
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MSVCRT_free(args);
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}
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if (envs)
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MSVCRT_free(envs);
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return ret;
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}
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/*********************************************************************
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* _spawnv (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnv(int flags, const char* name, const char* const* argv)
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{
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return _spawnve(flags, name, argv, NULL);
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}
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/*********************************************************************
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* _spawnvpe (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnvpe(int flags, const char* name, const char* const* argv,
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const char* const* envv)
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{
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char fullname[MAX_PATH];
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_searchenv(name, "PATH", fullname);
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return _spawnve(flags, fullname[0] ? fullname : name, argv, envv);
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}
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/*********************************************************************
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* _spawnvp (MSVCRT.@)
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*
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* Like on Windows, this function does not handle arguments with spaces
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* or double-quotes.
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*/
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MSVCRT_intptr_t _spawnvp(int flags, const char* name, const char* const* argv)
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{
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return _spawnvpe(flags, name, argv, NULL);
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}
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/*********************************************************************
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* _popen (MSVCRT.@)
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* FIXME: convert to _wpopen and call that from here instead? But it
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* would have to convert the command back to ANSI to call msvcrt_spawn,
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* less than ideal.
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*/
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MSVCRT_FILE* MSVCRT__popen(const char* command, const char* mode)
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{
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static const char wcmd[] = "wcmd", cmdFlag[] = " /C ", comSpec[] = "COMSPEC";
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MSVCRT_FILE *ret;
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BOOL readPipe = TRUE;
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int textmode, fds[2], fdToDup, fdToOpen, fdStdHandle = -1, fdStdErr = -1;
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const char *p;
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char *cmdcopy;
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DWORD comSpecLen;
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TRACE("(command=%s, mode=%s)\n", debugstr_a(command), debugstr_a(mode));
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if (!command || !mode)
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return NULL;
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|
|
textmode = *__p__fmode() & (MSVCRT__O_BINARY | MSVCRT__O_TEXT);
|
|
for (p = mode; *p; p++)
|
|
{
|
|
switch (*p)
|
|
{
|
|
case 'W':
|
|
case 'w':
|
|
readPipe = FALSE;
|
|
break;
|
|
case 'B':
|
|
case 'b':
|
|
textmode |= MSVCRT__O_BINARY;
|
|
textmode &= ~MSVCRT__O_TEXT;
|
|
break;
|
|
case 'T':
|
|
case 't':
|
|
textmode |= MSVCRT__O_TEXT;
|
|
textmode &= ~MSVCRT__O_BINARY;
|
|
break;
|
|
}
|
|
}
|
|
if (_pipe(fds, 0, textmode) == -1)
|
|
return NULL;
|
|
|
|
fdToDup = readPipe ? 1 : 0;
|
|
fdToOpen = readPipe ? 0 : 1;
|
|
|
|
if ((fdStdHandle = _dup(fdToDup)) == -1)
|
|
goto error;
|
|
if (_dup2(fds[fdToDup], fdToDup) != 0)
|
|
goto error;
|
|
if (readPipe)
|
|
{
|
|
if ((fdStdErr = _dup(MSVCRT_STDERR_FILENO)) == -1)
|
|
goto error;
|
|
if (_dup2(fds[fdToDup], MSVCRT_STDERR_FILENO) != 0)
|
|
goto error;
|
|
}
|
|
|
|
_close(fds[fdToDup]);
|
|
|
|
comSpecLen = GetEnvironmentVariableA(comSpec, NULL, 0);
|
|
if (!comSpecLen)
|
|
comSpecLen = strlen(wcmd) + 1;
|
|
cmdcopy = HeapAlloc(GetProcessHeap(), 0, comSpecLen + strlen(cmdFlag)
|
|
+ strlen(command));
|
|
if (!GetEnvironmentVariableA(comSpec, cmdcopy, comSpecLen))
|
|
strcpy(cmdcopy, wcmd);
|
|
strcat(cmdcopy, cmdFlag);
|
|
strcat(cmdcopy, command);
|
|
if (msvcrt_spawn(MSVCRT__P_NOWAIT, NULL, cmdcopy, NULL) == -1)
|
|
{
|
|
_close(fds[fdToOpen]);
|
|
ret = NULL;
|
|
}
|
|
else
|
|
{
|
|
ret = MSVCRT__fdopen(fds[fdToOpen], mode);
|
|
if (!ret)
|
|
_close(fds[fdToOpen]);
|
|
}
|
|
HeapFree(GetProcessHeap(), 0, cmdcopy);
|
|
_dup2(fdStdHandle, fdToDup);
|
|
_close(fdStdHandle);
|
|
if (readPipe)
|
|
{
|
|
_dup2(fdStdErr, MSVCRT_STDERR_FILENO);
|
|
_close(fdStdErr);
|
|
}
|
|
return ret;
|
|
|
|
error:
|
|
if (fdStdHandle != -1) _close(fdStdHandle);
|
|
if (fdStdErr != -1) _close(fdStdErr);
|
|
_close(fds[0]);
|
|
_close(fds[1]);
|
|
return NULL;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _wpopen (MSVCRT.@)
|
|
*/
|
|
MSVCRT_FILE* MSVCRT__wpopen(const MSVCRT_wchar_t* command, const MSVCRT_wchar_t* mode)
|
|
{
|
|
FIXME("(command=%s, mode=%s): stub\n", debugstr_w(command), debugstr_w(mode));
|
|
return NULL;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _pclose (MSVCRT.@)
|
|
*/
|
|
int MSVCRT__pclose(MSVCRT_FILE* file)
|
|
{
|
|
return MSVCRT_fclose(file);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* system (MSVCRT.@)
|
|
*/
|
|
int MSVCRT_system(const char* cmd)
|
|
{
|
|
char* cmdcopy;
|
|
int res;
|
|
|
|
/* Make a writable copy for CreateProcess */
|
|
cmdcopy=_strdup(cmd);
|
|
/* FIXME: should probably launch cmd interpreter in COMSPEC */
|
|
res=msvcrt_spawn(MSVCRT__P_WAIT, NULL, cmdcopy, NULL);
|
|
MSVCRT_free(cmdcopy);
|
|
return res;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _loaddll (MSVCRT.@)
|
|
*/
|
|
MSVCRT_intptr_t _loaddll(const char* dllname)
|
|
{
|
|
return (MSVCRT_intptr_t)LoadLibraryA(dllname);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _unloaddll (MSVCRT.@)
|
|
*/
|
|
int _unloaddll(MSVCRT_intptr_t dll)
|
|
{
|
|
if (FreeLibrary((HMODULE)dll))
|
|
return 0;
|
|
else
|
|
{
|
|
int err = GetLastError();
|
|
msvcrt_set_errno(err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _getdllprocaddr (MSVCRT.@)
|
|
*/
|
|
void *_getdllprocaddr(MSVCRT_intptr_t dll, const char *name, int ordinal)
|
|
{
|
|
if (name)
|
|
{
|
|
if (ordinal != -1) return NULL;
|
|
return GetProcAddress( (HMODULE)dll, name );
|
|
}
|
|
if (HIWORD(ordinal)) return NULL;
|
|
return GetProcAddress( (HMODULE)dll, (LPCSTR)(ULONG_PTR)ordinal );
|
|
}
|