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.
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9 * modification, are permitted provided that the following conditions
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17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
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21 * may be used to endorse or promote products derived from this software
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36 * @(#)lockf.h 8.1 (Berkeley) 6/11/93
37 * $FreeBSD: src/sys/sys/lockf.h,v 1.10 1999/08/28 00:51:51 peter Exp $
38 * $DragonFly: src/sys/sys/lockf.h,v 1.6 2004/05/07 10:09:25 joerg Exp $
44 #include <sys/queue.h>
46 struct vop_advlock_args;
49 * The lockf structure is a kernel structure which contains the information
50 * associated with the byte range locks on an inode. The lockf structure is
51 * embedded in the inode structure.
55 short lf_type; /* Lock type: F_RDLCK, F_WRLCK */
56 short lf_flags; /* Lock flags: F_NOEND */
57 off_t lf_start; /* Byte # of the start of the lock */
58 off_t lf_end; /* Byte # of the end of the lock, */
59 struct proc *lf_owner; /* owning process, NULL for flock locks */
60 TAILQ_ENTRY(lockf_range) lf_link;
64 TAILQ_HEAD(, lockf_range) lf_range;
65 TAILQ_HEAD(, lockf_range) lf_blocked;
69 int lf_advlock(struct vop_advlock_args *, struct lockf *, u_quad_t);
72 extern int maxposixlocksperuid;
75 void lf_count_adjust(struct proc *, int);
77 #endif /* !_SYS_LOCKF_H_ */