xref: /original-bsd/lib/libc/stdlib/putenv.c (revision c3e32dec)
1 /*-
2  * Copyright (c) 1988, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #if defined(LIBC_SCCS) && !defined(lint)
9 static char sccsid[] = "@(#)putenv.c	8.1 (Berkeley) 06/04/93";
10 #endif /* LIBC_SCCS and not lint */
11 
12 #include <stdlib.h>
13 #include <string.h>
14 
15 int
16 putenv(str)
17 	const char *str;
18 {
19 	register char *p, *equal;
20 	int rval;
21 
22 	if (!(p = strdup(str)))
23 		return(1);
24 	if (!(equal = index(p, '='))) {
25 		(void)free(p);
26 		return(1);
27 	}
28 	*equal = '\0';
29 	rval = setenv(p, equal + 1, 1);
30 	(void)free(p);
31 	return(rval);
32 }
33