1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32/*
33 *  NAME
34 *	delempty - delete an empty mail box
35 *
36 *  SYNOPSIS
37 *	int delempty(mode_t mode, char *mailname)
38 *
39 *  DESCRIPTION
40 *	Delete an empty mail box if it's allowed. Check
41 *	the value of xgetenv("DEL_EMPTY_MFILE") for
42 *	"yes" [always], "no" [never] or the default [based
43 *	on the mode].
44 */
45
46#include "libmail.h"
47#include <sys/types.h>
48#include <unistd.h>
49
50int
51delempty(mode_t mode, char *mailname)
52{
53	char *del_empty = Xgetenv("DEL_EMPTY_MFILE");
54	size_t del_len;
55	int do_del = 0;
56
57	del_len = strlen(del_empty);
58	/* "yes" means always remove the mailfile */
59	if (casncmp(del_empty, "yes", (ssize_t)del_len))
60		do_del = 1;
61	/* "no" means never remove the mailfile */
62	else if (!casncmp(del_empty, "no", (ssize_t)del_len)) {
63		/* check for mode 0660 */
64		if ((mode & 07777) == MFMODE)
65			do_del = 1;
66	}
67
68	if (do_del)
69		(void) unlink(mailname);
70	return (do_del);
71}
72