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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 1998 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#ifndef _SYS_LOCKFS_H 28#define _SYS_LOCKFS_H 29 30#pragma ident "%Z%%M% %I% %E% SMI" 31 32#ifdef __cplusplus 33extern "C" { 34#endif 35 36#ifdef _SYSCALL32 37/* 38 * ILP32 version of lockfs, used in ufs_ioctl() to support 32-bit app in 39 * LP64 kernel 40 */ 41struct lockfs32 { 42 uint32_t lf_lock; /* desired lock */ 43 uint32_t lf_flags; /* misc flags */ 44 uint32_t lf_key; /* lock key */ 45 uint32_t lf_comlen; /* length of comment */ 46 uint32_t lf_comment; /* address of comment */ 47}; 48#endif /* _SYSCALL32 */ 49 50struct lockfs { 51 ulong_t lf_lock; /* desired lock */ 52 ulong_t lf_flags; /* misc flags */ 53 ulong_t lf_key; /* lock key */ 54 ulong_t lf_comlen; /* length of comment */ 55 caddr_t lf_comment; /* address of comment */ 56}; 57 58/* 59 * lf_lock and lf_locking 60 */ 61#define LOCKFS_ULOCK 0 /* unlock */ 62#define LOCKFS_WLOCK 1 /* write lock */ 63#define LOCKFS_NLOCK 2 /* name lock */ 64#define LOCKFS_DLOCK 3 /* delete lock */ 65#define LOCKFS_HLOCK 4 /* hard lock */ 66#define LOCKFS_ELOCK 5 /* error lock */ 67#define LOCKFS_ROELOCK 6 /* error lock (read-only) - unimplemented */ 68#define LOCKFS_MAXLOCK 6 /* maximum lock number */ 69 70/* 71 * lf_flags 72 */ 73#define LOCKFS_BUSY 0x00000001 /* lock is being set */ 74#define LOCKFS_MOD 0x00000002 /* file system modified */ 75 76#define LOCKFS_MAXCOMMENTLEN 1024 /* maximum comment length */ 77 78/* 79 * some nice checking macros 80 */ 81 82#define LOCKFS_IS_BUSY(LF) ((LF)->lf_flags & LOCKFS_BUSY) 83#define LOCKFS_IS_MOD(LF) ((LF)->lf_flags & LOCKFS_MOD) 84 85#define LOCKFS_CLR_BUSY(LF) ((LF)->lf_flags &= ~LOCKFS_BUSY) 86#define LOCKFS_CLR_MOD(LF) ((LF)->lf_flags &= ~LOCKFS_MOD) 87 88#define LOCKFS_SET_MOD(LF) ((LF)->lf_flags |= LOCKFS_MOD) 89#define LOCKFS_SET_BUSY(LF) ((LF)->lf_flags |= LOCKFS_BUSY) 90 91#define LOCKFS_IS_WLOCK(LF) ((LF)->lf_lock == LOCKFS_WLOCK) 92#define LOCKFS_IS_HLOCK(LF) ((LF)->lf_lock == LOCKFS_HLOCK) 93#define LOCKFS_IS_ROELOCK(LF) ((LF)->lf_lock == LOCKFS_ROELOCK) 94#define LOCKFS_IS_ELOCK(LF) ((LF)->lf_lock == LOCKFS_ELOCK) 95#define LOCKFS_IS_ULOCK(LF) ((LF)->lf_lock == LOCKFS_ULOCK) 96#define LOCKFS_IS_NLOCK(LF) ((LF)->lf_lock == LOCKFS_NLOCK) 97#define LOCKFS_IS_DLOCK(LF) ((LF)->lf_lock == LOCKFS_DLOCK) 98 99#ifdef __cplusplus 100} 101#endif 102 103#endif /* _SYS_LOCKFS_H */ 104