posix/execlp.c

   1 /* Copyright (C) 1991, 1993, 1996 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 <unistd.h>
  20 #include <stdarg.h>
  21 #include <stddef.h>
  22
  23 /* Execute FILE, searching in the `PATH' environment variable if
  24    it contains no slashes, with all arguments after FILE until a
  25    NULL pointer and environment from `environ'.  */
  26 int
  27 execlp (const char *file, const char *arg, ...)
  28 {
  29   const char *argv[1024];
  30   unsigned int i;
  31   va_list args;
  32
  33   va_start (args, arg);
  34
  35   argv[i = 0] = arg;
  36   while (argv[i++] != NULL)
  37     argv[i] = va_arg (args, const char *);
  38
  39   va_end (args);
  40
  41   return execvp (file, (char *const *) argv);
  42 }