1.\" Copyright (c) 1996 Doug Rabson 2.\" 3.\" All rights reserved. 4.\" 5.\" This program is free software. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man9/VOP_GETPAGES.9,v 1.4.2.2 2001/12/17 11:30:18 ru Exp $ 28.\" 29.Dd May 6, 2020 30.Dt VOP_GETPAGES 9 31.Os 32.Sh NAME 33.Nm VOP_GETPAGES , 34.Nm VOP_PUTPAGES 35.Nd read or write VM pages from a file 36.Sh SYNOPSIS 37.In sys/param.h 38.In sys/vnode.h 39.In vm/vm.h 40.Ft int 41.Fn VOP_GETPAGES "struct vnode *vp" "vm_page_t *m" "int count" "int reqpage" "vm_ooffset_t offset" "int seqaccess" 42.Ft int 43.Fn VOP_PUTPAGES "struct vnode *vp" "vm_page_t *m" "int count" "int flags" "int *rtvals" "vm_ooffset_t offset" 44.Sh DESCRIPTION 45The arguments are: 46.Bl -tag -width ".Fa seqaccess" 47.It Fa vp 48The file to access. 49.It Fa m 50Pointer to a page array representing a contiguous region of the file to 51be read or written. 52.It Fa count 53The length of this array. 54.It Fa flags 55.Dv OBJPC_* 56flags, see 57.In vm/vm_pager.h . 58.It Fa rtvals 59An array of VM system result codes indicating the status of each 60page written by 61.Fn VOP_PUTPAGES . 62.It Fa reqpage 63Index of the requested page. 64.It Fa offset 65Offset in the file to start accessing. 66.It Fa seqaccess 67Sequential access. 68.El 69.Sh RETURN VALUES 70Zero is returned on success, otherwise an error is returned. 71.Sh SEE ALSO 72.Xr vnode 9 73.Sh AUTHORS 74This man page was written by 75.An Doug Rabson . 76