NAME
VFS_SET —
set up loadable file system
vfsconf
SYNOPSIS
#include
<sys/param.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/mount.h>
void
VFS_SET(struct
vfsops *vfsops,
fsname,
int flags);
DESCRIPTION
VFS_SET()
creates a vfsconf structure for the loadable module with
the given vfsops, fsname and
flags, and declares it by calling
DECLARE_MODULE(9) using
vfs_modevent()
as the event handler.
Possible values for the flags argument are:
VFCF_STATIC- File system should be statically available in the kernel.
VFCF_NETWORK- Network exportable file system.
VFCF_READONLY- Does not support write operations.
VFCF_SYNTHETIC- Pseudo file system, data does not represent on-disk files.
VFCF_LOOPBACK- Loopback file system layer.
VFCF_UNICODE- File names are stored as Unicode.
VFCF_JAIL- Can be mounted from within a jail if allow.mount and allow.mount.<fsname> jail parameters are set.
VFCF_DELEGADMIN- Supports delegated administration if vfs.usermount
sysctl is set to
1. VFCF_SBDRY- When in VFS method, the thread suspension is deferred to the user boundary upon arrival of stop action.
PSEUDOCODE
/*
* Fill in the fields for which we have special methods.
* The others are initially null. This tells vfs to change them to
* pointers to vfs_std* functions during file system registration.
*/
static struct vfsops myfs_vfsops = {
.vfs_mount = myfs_mount,
.vfs_root = myfs_root,
.vfs_statfs = myfs_statfs,
.vfs_unmount = myfs_unmount,
};
VFS_SET(myfs_vfsops, myfs, 0);
SEE ALSO
jail(2), jail(8), DECLARE_MODULE(9), vfs_modevent(9), vfsconf(9)
AUTHORS
This manual page was written by Chad David <davidc@acns.ab.ca>.