zfs-builds-mm/zfs-0.8.3/lib/libspl/include/sys/param.h
2020-03-01 19:43:35 +01:00

67 lines
2 KiB
C

/*
* 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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBSPL_SYS_PARAM_H
#define _LIBSPL_SYS_PARAM_H
#include_next <sys/param.h>
#include <unistd.h>
/*
* File system parameters and macros.
*
* The file system is made out of blocks of at most MAXBSIZE units,
* with smaller units (fragments) only in the last direct block.
* MAXBSIZE primarily determines the size of buffers in the buffer
* pool. It may be made larger without any effect on existing
* file systems; however making it smaller may make some file
* systems unmountable.
*
* Note that the blocked devices are assumed to have DEV_BSIZE
* "sectors" and that fragments must be some multiple of this size.
*/
#define MAXBSIZE 8192
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define MAXNAMELEN 256
#define MAXOFFSET_T LLONG_MAX
#define UID_NOBODY 60001 /* user ID no body */
#define GID_NOBODY UID_NOBODY
#define UID_NOACCESS 60002 /* user ID no access */
#define MAXUID UINT32_MAX /* max user id */
#define MAXPROJID MAXUID /* max project id */
#ifdef PAGESIZE
#undef PAGESIZE
#endif /* PAGESIZE */
extern size_t spl_pagesize(void);
#define PAGESIZE (spl_pagesize())
#endif