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/*
* 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 1998 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_LOCKFS_H
#define _SYS_LOCKFS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _SYSCALL32
/*
* ILP32 version of lockfs, used in ufs_ioctl() to support 32-bit app in
* LP64 kernel
*/
struct lockfs32 {
uint32_t lf_lock; /* desired lock */
uint32_t lf_flags; /* misc flags */
uint32_t lf_key; /* lock key */
uint32_t lf_comlen; /* length of comment */
uint32_t lf_comment; /* address of comment */
};
#endif /* _SYSCALL32 */
struct lockfs {
ulong_t lf_lock; /* desired lock */
ulong_t lf_flags; /* misc flags */
ulong_t lf_key; /* lock key */
ulong_t lf_comlen; /* length of comment */
caddr_t lf_comment; /* address of comment */
};
/*
* lf_lock and lf_locking
*/
#define LOCKFS_ULOCK 0 /* unlock */
#define LOCKFS_WLOCK 1 /* write lock */
#define LOCKFS_NLOCK 2 /* name lock */
#define LOCKFS_DLOCK 3 /* delete lock */
#define LOCKFS_HLOCK 4 /* hard lock */
#define LOCKFS_ELOCK 5 /* error lock */
#define LOCKFS_ROELOCK 6 /* error lock (read-only) - unimplemented */
#define LOCKFS_MAXLOCK 6 /* maximum lock number */
/*
* lf_flags
*/
#define LOCKFS_BUSY 0x00000001 /* lock is being set */
#define LOCKFS_MOD 0x00000002 /* file system modified */
#define LOCKFS_MAXCOMMENTLEN 1024 /* maximum comment length */
/*
* some nice checking macros
*/
#define LOCKFS_IS_BUSY(LF) ((LF)->lf_flags & LOCKFS_BUSY)
#define LOCKFS_IS_MOD(LF) ((LF)->lf_flags & LOCKFS_MOD)
#define LOCKFS_CLR_BUSY(LF) ((LF)->lf_flags &= ~LOCKFS_BUSY)
#define LOCKFS_CLR_MOD(LF) ((LF)->lf_flags &= ~LOCKFS_MOD)
#define LOCKFS_SET_MOD(LF) ((LF)->lf_flags |= LOCKFS_MOD)
#define LOCKFS_SET_BUSY(LF) ((LF)->lf_flags |= LOCKFS_BUSY)
#define LOCKFS_IS_WLOCK(LF) ((LF)->lf_lock == LOCKFS_WLOCK)
#define LOCKFS_IS_HLOCK(LF) ((LF)->lf_lock == LOCKFS_HLOCK)
#define LOCKFS_IS_ROELOCK(LF) ((LF)->lf_lock == LOCKFS_ROELOCK)
#define LOCKFS_IS_ELOCK(LF) ((LF)->lf_lock == LOCKFS_ELOCK)
#define LOCKFS_IS_ULOCK(LF) ((LF)->lf_lock == LOCKFS_ULOCK)
#define LOCKFS_IS_NLOCK(LF) ((LF)->lf_lock == LOCKFS_NLOCK)
#define LOCKFS_IS_DLOCK(LF) ((LF)->lf_lock == LOCKFS_DLOCK)
#ifdef __cplusplus
}
#endif
#endif /* _SYS_LOCKFS_H */
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