date and time created 90/05/16 13:03:37 by bostic

[unix-history] / usr / src / lib / libc / stdlib / putenv.c

/*
 * 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 the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not 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.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)putenv.c	5.1 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

putenv(str)
	char *str;
{
	register char *equal;
	int rval;
	char *index();

	if (!(equal = index(str, '=')))
		return(1);
	*equal = '\0';
	rval = setenv(str, equal + 1, 1);
	*equal = '=';
	return(rval);
}