delempty.c revision e8031f0a8ed0e45c6d8847c5e09424e66fd34a4b
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
/*
* NAME
* delempty - delete an empty mail box
*
* SYNOPSIS
* int delempty(mode_t mode, char *mailname)
*
* DESCRIPTION
* Delete an empty mail box if it's allowed. Check
* the value of xgetenv("DEL_EMPTY_MFILE") for
* "yes" [always], "no" [never] or the default [based
* on the mode].
*/
#include "c_synonyms.h"
#include "libmail.h"
#include <sys/types.h>
#include <unistd.h>
int
delempty(mode_t mode, char *mailname)
{
char *del_empty = Xgetenv("DEL_EMPTY_MFILE");
size_t del_len;
int do_del = 0;
del_len = strlen(del_empty);
/* "yes" means always remove the mailfile */
if (casncmp(del_empty, "yes", (ssize_t)del_len))
do_del = 1;
/* "no" means never remove the mailfile */
else if (!casncmp(del_empty, "no", (ssize_t)del_len)) {
/* check for mode 0660 */
if ((mode & 07777) == MFMODE)
do_del = 1;
}
if (do_del)
(void) unlink(mailname);
return (do_del);
}