1.\" 2.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice(s), this list of conditions and the following disclaimer as 9.\" the first lines of this file unmodified other than the possible 10.\" addition of one or more copyright notices. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice(s), this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 16.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18.\" DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY 19.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 22.\" CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 25.\" DAMAGE. 26.\" 27.Dd August 16, 2018 28.Dt VFS_SET 9 29.Os 30.Sh NAME 31.Nm VFS_SET 32.Nd set up loadable file system 33.Vt vfsconf 34.Sh SYNOPSIS 35.In sys/param.h 36.In sys/kernel.h 37.In sys/module.h 38.In sys/mount.h 39.Ft void 40.Fn VFS_SET "struct vfsops *vfsops" "fsname" "int flags" 41.Sh DESCRIPTION 42.Fn VFS_SET 43creates a 44.Vt vfsconf 45structure for the loadable module with the given 46.Fa vfsops , fsname 47and 48.Fa flags , 49and declares it by calling 50.Xr DECLARE_MODULE 9 51using 52.Fn vfs_modevent 53as the event handler. 54.Pp 55Possible values for the 56.Fa flags 57argument are: 58.Bl -hang -width ".Dv VFCF_DELEGADMIN" 59.It Dv VFCF_STATIC 60File system should be statically available in the kernel. 61.It Dv VFCF_NETWORK 62Network exportable file system. 63.It Dv VFCF_READONLY 64Does not support write operations. 65.It Dv VFCF_SYNTHETIC 66Pseudo file system, data does not represent on-disk files. 67.It Dv VFCF_LOOPBACK 68Loopback file system layer. 69.It Dv VFCF_UNICODE 70File names are stored as Unicode. 71.It Dv VFCF_JAIL 72Can be mounted from within a jail if 73.Va allow.mount 74and 75.Va allow.mount.<fsname> 76jail parameters are set. 77.It Dv VFCF_DELEGADMIN 78Supports delegated administration if 79.Va vfs.usermount 80sysctl is set to 81.Dv 1 . 82.It Dv VFCF_SBDRY 83When in VFS method, the thread suspension is deferred to the user 84boundary upon arrival of stop action. 85.El 86.Sh PSEUDOCODE 87.Bd -literal 88/* 89 * Fill in the fields for which we have special methods. 90 * The others are initially null. This tells vfs to change them to 91 * pointers to vfs_std* functions during file system registration. 92 */ 93static struct vfsops myfs_vfsops = { 94 .vfs_mount = myfs_mount, 95 .vfs_root = myfs_root, 96 .vfs_statfs = myfs_statfs, 97 .vfs_unmount = myfs_unmount, 98}; 99 100VFS_SET(myfs_vfsops, myfs, 0); 101.Ed 102.Sh SEE ALSO 103.Xr jail 2 , 104.Xr jail 8 , 105.Xr DECLARE_MODULE 9 , 106.Xr vfs_modevent 9 , 107.Xr vfsconf 9 108.Sh AUTHORS 109This manual page was written by 110.An Chad David Aq Mt davidc@acns.ab.ca . 111