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/* This file may have been modified by DJ Delorie (Jan 1991).  If so,

** these modifications are Copyright (C) 1991 DJ Delorie.

*/

/*-

 * Copyright (c) 1988 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that: (1) source distributions retain this entire copyright

 * notice and comment, and (2) distributions including binaries display

 * the following acknowledgement:  ``This product includes software

 * developed by the University of California, Berkeley and its contributors''

 * in the documentation or other materials provided with the distribution

 * and in all advertising materials mentioning features or use of this

 * software. Neither the name of the University nor the names of its

 * contributors may be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

#include <reent.h>

#include <stdlib.h>

#include <string.h>

#include "envlock.h"

/* _putenv_r - reentrant version of putenv that either adds

               or replaces the environment variable "name"

               with "value" which is specified by str as "name=value". */

int

_DEFUN (_putenv_r, (reent_ptr, str),

        struct _reent *reent_ptr _AND

        char   *str)

{

  register char *p, *equal;

  int rval;

  p = _strdup_r (reent_ptr, str);

  if (!p)

    return 1;

  if (!(equal = index (p, '=')))

    {

      (void) _free_r (reent_ptr, p);

      return 1;

    }

  *equal = '\0';

  rval = _setenv_r (reent_ptr, p, equal + 1, 1);

  (void) _free_r (reent_ptr, p);

  return rval;

}