libs/port/spawn.c

   1 /*
   2  * spawnvp function
   3  *
   4  * Copyright 2003 Dimitrie O. Paun
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <errno.h>
  25 #ifdef HAVE_SYS_WAIT_H
  26 #include <sys/wait.h>
  27 #endif
  28 #include <sys/stat.h>
  29 #ifdef HAVE_UNISTD_H
  30 # include <unistd.h>
  31 #endif
  32
  33 int spawnvp(int mode, const char *cmdname, char *const argv[])
  34 {
  35 #ifndef HAVE__SPAWNVP
  36     int pid = 0, status, wret;
  37
  38     if (mode != _P_OVERLAY) pid = fork();
  39     if (pid == 0) pid = execvp(argv[0], argv);
  40     if (pid < 0) return -1;
  41
  42     if (mode != _P_WAIT) return pid;
  43
  44     while (pid != (wret = waitpid(pid, &status, 0)))
  45         if (wret == -1 && errno != EINTR) break;
  46
  47     if (pid == wret && WIFEXITED(status)) return WEXITSTATUS(status);
  48
  49     return 255; /* abnormal exit with an abort or an interrupt */
  50 #else   /* HAVE__SPAWNVP */
  51     return _spawnvp(mode, cmdname, argv);
  52 #endif  /* HAVE__SPAWNVP */
  53 }