posix/execl.c

   1 /* Copyright (C) 1991, 1992, 1994 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 #ifndef HAVE_GNU_LD
  25 #define __environ       environ
  26 #endif
  27
  28 /* Execute PATH with all arguments after PATH until
  29    a NULL pointer and environment from `environ'.  */
  30 int
  31 DEFUN(execl, (path, arg), CONST char *path AND CONST char *arg DOTS)
  32 {
  33   CONST char *argv[1024];
  34   register unsigned int i;
  35   va_list args;
  36
  37   argv[0] = arg;
  38
  39   va_start (args, arg);
  40   i = 1;
  41   do
  42     {
  43       argv[i] = va_arg (args, CONST char *);
  44     } while (argv[i++] != NULL);
  45   va_end (args);
  46
  47   return __execve (path, (char *CONST *) argv, __environ);
  48 }