setenv.c
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- /* $Id: setenv.c,v 1.1 2006/03/29 21:55:17 faxguy Exp $
- /*
- * Copyright (c) 1994-1996 Sam Leffler
- * Copyright (c) 1994-1996 Silicon Graphics, Inc.
- * HylaFAX is a trademark of Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
- #include "port.h"
- #include <errno.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- int
- setenv(const char* name, const char* value, int overwrite)
- {
- char* new_env;
- int len;
- if (! overwrite)
- {
- /*
- * If we are not to overwrite the previous one,
- * We have to return if it's found
- */
- if (getenv(name) )
- return 0;
- }
- /*
- * The length we need is:
- * - length of name
- * - =
- * - length of value
- * -