vfs_mount(9)

NAME

VFS_MOUNT - mount a file system

SYNOPSIS

#include <sys/param.h>
#include <sys/mount.h>
#include <sys/vnode.h>
int
VFS_MOUNT(struct mount *mp, struct thread *td);

DESCRIPTION

The VFS_MOUNT() macro mounts a file system into the system's

namespace or
updates the attributes of an already mounted file system.

The arguments it expects are:

mp Structure representing the file system.

td Thread which is mounting the file system.

The VFS_MOUNT() macro is called both to mount new file sys

tems and to
change the attributes of an existing file system. If the

MNT_UPDATE flag
is set in mp->mnt_flag then the file system should update

its internal
state from the value of mp->mnt_flag. This can be used, for

instance, to
convert a read-only file system to read-write. It is also

used by
mountd(8) to update the NFS export information for the file

system.

If the MNT_UPDATE flag is not specified, then this is a new

ly mounted
file system. The file system code should allocate and ini

tialize any
private data needed to represent the file system (it can use

the
mp->mnt_data field to store this information).

SEE ALSO

VFS(9), vnode(9)

AUTHORS

This manual page was written by Doug Rabson.

BSD January 7, 2005

BSD