posix/execle.c

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <unistd.h>
  21 #include <stdarg.h>
  22 #include <stddef.h>
  23
  24 /* Execute PATH with all arguments after PATH until a NULL pointer,
  25    and the argument after that for environment.  */
  26 int
  27 DEFUN(execle, (path), CONST char *path AND CONST char *arg DOTS)
  28 {
  29   CONST char *argv[1024], *CONST *envp;
  30   register unsigned int i;
  31   va_list args;
  32
  33   va_start(args, arg);
  34   argv[0] = arg;
  35   i = 1;
  36   do
  37     {
  38       argv[i] = va_arg(args, CONST char *);
  39     } while (argv[i++] != NULL);
  40
  41   envp = va_arg(args, CONST char *CONST *);
  42   va_end(args);
  43
  44   return __execve(path, (char *CONST *) argv, (char *CONST *) envp);
  45 }