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Annotation of src/lib/libc/stdlib/putenv.c, Revision 1.11

1.11    ! mycroft     1: /*     $NetBSD: putenv.c,v 1.10 1999/09/20 04:39:40 lukem Exp $        */
1.5       thorpej     2:
1.1       cgd         3: /*-
1.8       perry       4:  * Copyright (c) 1988, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
1.6       christos   36: #include <sys/cdefs.h>
1.1       cgd        37: #if defined(LIBC_SCCS) && !defined(lint)
1.5       thorpej    38: #if 0
1.8       perry      39: static char sccsid[] = "@(#)putenv.c   8.2 (Berkeley) 3/27/94";
1.5       thorpej    40: #else
1.11    ! mycroft    41: __RCSID("$NetBSD: putenv.c,v 1.10 1999/09/20 04:39:40 lukem Exp $");
1.5       thorpej    42: #endif
1.1       cgd        43: #endif /* LIBC_SCCS and not lint */
                     44:
1.7       jtc        45: #include "namespace.h"
1.9       lukem      46:
                     47: #include <assert.h>
                     48: #include <errno.h>
1.1       cgd        49: #include <stdlib.h>
                     50: #include <string.h>
1.7       jtc        51:
                     52: #ifdef __weak_alias
1.11    ! mycroft    53: __weak_alias(putenv,_putenv)
1.7       jtc        54: #endif
1.1       cgd        55:
                     56: int
                     57: putenv(str)
                     58:        const char *str;
                     59: {
1.8       perry      60:        char *p, *equal;
1.1       cgd        61:        int rval;
1.9       lukem      62:
                     63:        _DIAGASSERT(str != NULL);
1.1       cgd        64:
1.8       perry      65:        if ((p = strdup(str)) == NULL)
                     66:                return (-1);
                     67:        if ((equal = strchr(p, '=')) == NULL) {
1.1       cgd        68:                (void)free(p);
1.8       perry      69:                return (-1);
1.1       cgd        70:        }
                     71:        *equal = '\0';
                     72:        rval = setenv(p, equal + 1, 1);
                     73:        (void)free(p);
1.8       perry      74:        return (rval);
1.1       cgd        75: }