1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd February 10, 2021 30.Dt VOP_ADVLOCK 9 31.Os 32.Sh NAME 33.Nm VOP_ADVLOCK 34.Nd advisory record locking 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/vnode.h 38.In sys/fcntl.h 39.In sys/lockf.h 40.Ft int 41.Fn VOP_ADVLOCK "struct vnode *vp" "caddr_t id" "int op" "struct flock *fl" "int flags" 42.Sh DESCRIPTION 43The arguments are: 44.Bl -tag -width flags 45.It Fa vp 46The vnode being manipulated. 47.It Fa id 48The id token which is changing the lock. 49.It Fa op 50The operation to perform (see 51.Xr fcntl 2 ) . 52.It Fa fl 53Description of the lock. 54.It Fa flags 55One or more of the following: 56.Pp 57.Bl -tag -width ".Dv F_REMOTE" -offset indent -compact 58.It Dv F_WAIT 59Wait until lock is granted. 60.It Dv F_FLOCK 61Use 62.Xr flock 2 63semantics for lock. 64.It Dv F_POSIX 65Use POSIX semantics for lock. 66.It Dv F_REMOTE 67Lock owner is remote NFS client. 68.It Dv F_NOINTR 69Mask signals while waiting for the lock. 70.El 71.El 72.Pp 73This entry point manipulates advisory record locks on the file. 74Most file systems delegate the work for this call to 75.Fn lf_advlock . 76.Sh RETURN VALUES 77Zero is returned on success, otherwise an error is returned. 78.Sh SEE ALSO 79.Xr fcntl 2 , 80.Xr flock 2 , 81.Xr vnode 9 82.Sh AUTHORS 83This manual page was written by 84.An Doug Rabson . 85