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VFS_MOUNT(9)	       FreeBSD Kernel Developer's Manual	  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 systems 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 newly mounted
     file system.  The file system code	should allocate	and initialize 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.

FreeBSD	10.1			January	7, 2005			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

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