2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Scooter Morris at Genentech Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)lockf.h 8.1 (Berkeley) 6/11/93
33 * $FreeBSD: src/sys/sys/lockf.h,v 1.10 1999/08/28 00:51:51 peter Exp $
34 * $DragonFly: src/sys/sys/lockf.h,v 1.9 2006/05/20 02:42:13 dillon Exp $
40 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
41 #error "This file should not be included by userland programs."
45 #include <sys/types.h>
48 #include <sys/queue.h>
51 struct vop_advlock_args
;
54 * The lockf structure is a kernel structure which contains the information
55 * associated with the byte range locks on an inode. The lockf structure is
56 * embedded in the inode structure.
60 short lf_type
; /* Lock type: F_RDLCK, F_WRLCK */
61 short lf_flags
; /* Lock flags: F_NOEND */
62 off_t lf_start
; /* Byte # of the start of the lock */
63 off_t lf_end
; /* Byte # of the end of the lock, */
64 struct proc
*lf_owner
; /* owning process, NULL for flock locks */
65 TAILQ_ENTRY(lockf_range
) lf_link
;
68 TAILQ_HEAD(lockf_range_list
, lockf_range
);
71 struct lockf_range_list lf_range
;
72 struct lockf_range_list lf_blocked
;
77 int lf_advlock(struct vop_advlock_args
*, struct lockf
*, u_quad_t
);
78 void lf_count_adjust(struct proc
*, int);
80 extern int maxposixlocksperuid
;
83 #endif /* !_SYS_LOCKF_H_ */