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.\" Copyright (c) 1996 Doug Rabson
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.\" $FreeBSD: release/9.1.0/share/man/man9/VOP_LINK.9 206622 2010-04-14 19:08:06Z uqs $
.\"
.Dd July 24, 1996
.Dt VOP_LINK 9
.Os
.Sh NAME
.Nm VOP_LINK
.Nd create a new name for a file
.Sh SYNOPSIS
.In sys/param.h
.In sys/vnode.h
.Ft int
.Fn VOP_LINK "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp"
.Sh DESCRIPTION
This links a new name in the specified directory to an existing file.
.Pp
Its arguments are:
.Bl -tag -width 8n
.It Fa dvp
The vnode of the directory.
.It Fa vp
The vnode of the file to be linked.
.It Fa cnp
Pathname information about the file.
.El
.Pp
The pathname info should
.Em not
be released on exit because it is done
by the caller.
The directory and file vnodes should
.Em not
be released on exit.
.Sh LOCKS
.Fn VOP_LINK
expects the directory and file vnodes to be locked on entry and will leave
the vnodes locked on return.
.Sh RETURN VALUES
Zero is returned if the file was linked successfully, otherwise an
error is returned.
.Sh ERRORS
.Bl -tag -width Er
.It Bq Er EMLINK
The file has too many links.
.It Bq Er EPERM
The file is immutable.
.It Bq Er EXDEV
A hard link is not possible between different file systems.
.El
.Sh SEE ALSO
.Xr vn_lock 9 ,
.Xr vnode 9
.Sh AUTHORS
This manual page was originally written by
.An Doug Rabson .