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 /*
31 * NAME
32 * delempty - delete an empty mail box
33 *
34 * SYNOPSIS
35 * int delempty(mode_t mode, char *mailname)
36 *
37 * DESCRIPTION
38 * Delete an empty mail box if it's allowed. Check
39 * the value of xgetenv("DEL_EMPTY_MFILE") for
40 * "yes" [always], "no" [never] or the default [based
41 * on the mode].
42 */
43
44 #include "libmail.h"
45 #include <sys/types.h>
46 #include <unistd.h>
47
48 int
delempty(mode_t mode,char * mailname)49 delempty(mode_t mode, char *mailname)
50 {
51 char *del_empty = Xgetenv("DEL_EMPTY_MFILE");
52 size_t del_len;
53 int do_del = 0;
54
55 del_len = strlen(del_empty);
56 /* "yes" means always remove the mailfile */
57 if (casncmp(del_empty, "yes", (ssize_t)del_len))
58 do_del = 1;
59 /* "no" means never remove the mailfile */
60 else if (!casncmp(del_empty, "no", (ssize_t)del_len)) {
61 /* check for mode 0660 */
62 if ((mode & 07777) == MFMODE)
63 do_del = 1;
64 }
65
66 if (do_del)
67 (void) unlink(mailname);
68 return (do_del);
69 }
70