xref: /freebsd/share/man/man9/VFS_SET.9 (revision 9a14aa017b21c292740c00ee098195cd46642730)
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27.\" $FreeBSD$
28.\"
29.Dd April 5, 2007
30.Dt VFS_SET 9
31.Os
32.Sh NAME
33.Nm VFS_SET
34.Nd set up loadable file system
35.Vt vfsconf
36.Sh SYNOPSIS
37.In sys/param.h
38.In sys/kernel.h
39.In sys/module.h
40.In sys/mount.h
41.Ft void
42.Fn VFS_SET "struct vfsops *vfsops" "fsname" "int flags"
43.Sh DESCRIPTION
44.Fn VFS_SET
45creates a
46.Vt vfsconf
47structure for the loadable module with the given
48.Fa vfsops , fsname
49and
50.Fa flags ,
51and declares it by calling
52.Xr DECLARE_MODULE 9
53using
54.Fn vfs_modevent
55as the event handler.
56.Pp
57Possible values for the
58.Fa flags
59argument are:
60.Bl -hang -width ".Dv VFCF_DELEGADMIN"
61.It Dv VFCF_STATIC
62File system should be statically available in the kernel.
63.It Dv VFCF_NETWORK
64Network exportable file system.
65.It Dv VFCF_READONLY
66Does not support write operations.
67.It Dv VFCF_SYNTHETIC
68Pseudo file system, data does not represent on-disk files.
69.It Dv VFCF_LOOPBACK
70Loopback file system layer.
71.It Dv VFCF_UNICODE
72File names are stored as Unicode.
73.It Dv VFCF_JAIL
74Can be mounted from within a jail if
75.Va security.jail.mount_allowed
76sysctl is set to
77.Dv 1 .
78.It Dv VFCF_DELEGADMIN
79Supports delegated administration if
80.Va vfs.usermount
81sysctl is set to
82.Dv 1 .
83.El
84.Sh PSEUDOCODE
85.Bd -literal
86/*
87 * fill in the ones we use, and use the vfs_std for the rest.
88 */
89static struct vfsops myfs_vfsops = {
90        myfs_mount,
91        vfs_stdstart,
92        myfs_unmount,
93        myfs_root,
94        vfs_stdquotactl,
95        myfs_statfs,
96        vfs_stdsync,
97        vfs_stdvget,
98        vfs_stdfhtovp,
99        vfs_stdcheckexp,
100        vfs_stdvptofh,
101        vfs_stdinit,
102        vfs_stduninit,
103        vfs_stdextattrctl,
104};
105
106VFS_SET(myfs_vfsops, skelfs, 0);
107.Ed
108.Sh SEE ALSO
109.Xr jail 2 ,
110.Xr jail 8 ,
111.Xr DECLARE_MODULE 9 ,
112.Xr vfsconf 9 ,
113.Xr vfs_modevent 9
114.Sh AUTHORS
115This manual page was written by
116.An Chad David Aq davidc@acns.ab.ca .
117