HardenedBSD/sbin/hastd/subr.c

/*-
 * Copyright (c) 2010 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Pawel Jakub Dawidek under sponsorship from
 * the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/disk.h>
#include <sys/ioctl.h>
#include <sys/stat.h>

#include <assert.h>
#include <errno.h>
#include <fcntl.h>

#include <pjdlog.h>

#include "hast.h"
#include "subr.h"

int
provinfo(struct hast_resource *res, bool dowrite)
{
	struct stat sb;

	assert(res->hr_localpath != NULL && res->hr_localpath[0] != '\0');

	if (res->hr_localfd == -1) {
		res->hr_localfd = open(res->hr_localpath,
		    dowrite ? O_RDWR : O_RDONLY);
		if (res->hr_localfd < 0) {
			KEEP_ERRNO(pjdlog_errno(LOG_ERR, "Unable to open %s",
			    res->hr_localpath));
			return (-1);
		}
	}
	if (fstat(res->hr_localfd, &sb) < 0) {
		KEEP_ERRNO(pjdlog_errno(LOG_ERR, "Unable to stat %s",
		    res->hr_localpath));
		return (-1);
	}
	if (S_ISCHR(sb.st_mode)) {
		/*
		 * If this is character device, it is most likely GEOM provider.
		 */
		if (ioctl(res->hr_localfd, DIOCGMEDIASIZE,
		    &res->hr_local_mediasize) < 0) {
			KEEP_ERRNO(pjdlog_errno(LOG_ERR,
			    "Unable obtain provider %s mediasize",
			    res->hr_localpath));
			return (-1);
		}
		if (ioctl(res->hr_localfd, DIOCGSECTORSIZE,
		    &res->hr_local_sectorsize) < 0) {
			KEEP_ERRNO(pjdlog_errno(LOG_ERR,
			    "Unable obtain provider %s sectorsize",
			    res->hr_localpath));
			return (-1);
		}
	} else if (S_ISREG(sb.st_mode)) {
		/*
		 * We also support regular files for which we hardcode
		 * sector size of 512 bytes.
		 */
		res->hr_local_mediasize = sb.st_size;
		res->hr_local_sectorsize = 512;
	} else {
		/*
		 * We support no other file types.
		 */
		pjdlog_error("%s is neither GEOM provider nor regular file.",
		    res->hr_localpath);
		errno = EFTYPE;
		return (-1);
	}
	return (0);
}

const char *
role2str(int role)
{

	switch (role) {																			
	case HAST_ROLE_INIT:																				
		return ("init");
	case HAST_ROLE_PRIMARY:																			
		return ("primary");
	case HAST_ROLE_SECONDARY:																			
		return ("secondary");
	}
	return ("unknown");
}