1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd July 24, 1996 30.Dt VOP_LINK 9 31.Os 32.Sh NAME 33.Nm VOP_LINK 34.Nd create a new name for a file 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/vnode.h 38.Ft int 39.Fn VOP_LINK "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp" 40.Sh DESCRIPTION 41This links a new name in the specified directory to an existing file. 42.Pp 43Its arguments are: 44.Bl -tag -width 8n 45.It Fa dvp 46The vnode of the directory. 47.It Fa vp 48The vnode of the file to be linked. 49.It Fa cnp 50Pathname information about the file. 51.El 52.Pp 53The pathname info should 54.Em not 55be released on exit because it is done 56by the caller. 57The directory and file vnodes should 58.Em not 59be released on exit. 60.Sh LOCKS 61.Fn VOP_LINK 62expects the directory and file vnodes to be locked on entry and will leave 63the vnodes locked on return. 64.Sh RETURN VALUES 65Zero is returned if the file was linked successfully, otherwise an 66error is returned. 67.Sh ERRORS 68.Bl -tag -width Er 69.It Bq Er EMLINK 70The file has too many links. 71.It Bq Er EPERM 72The file is immutable. 73.It Bq Er EXDEV 74A hard link is not possible between different file systems. 75.El 76.Sh SEE ALSO 77.Xr vn_lock 9 , 78.Xr vnode 9 79.Sh AUTHORS 80This manual page was originally written by 81.An Doug Rabson . 82