1 .\" Copyright (c) 1996 Doug Rabson
3 .\" All rights reserved.
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27 .\" $FreeBSD: src/share/man/man9/VOP_LINK.9,v 1.9.2.3 2001/12/17 11:30:18 ru Exp $
28 .\" $DragonFly: src/share/man/man9/VOP_LINK.9,v 1.5 2006/10/19 19:00:47 swildner Exp $
35 .Nd create a new name for a file
40 .Fn VOP_LINK "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp"
42 This links a new name in the specified directory to an existing file.
47 the vnode of the directory
49 the vnode of the file to be linked
51 pathname information about the file
54 The pathname info must be released on exit. The directory and
55 file vnodes should NOT be released on exit.
59 is locked on entry and should remain locked on return.
62 is not locked on entry and should remain that way on return.
63 If your VOP code locks
65 it must be sure to unlock prior to returning.
67 Zero is returned if the file was linked successfully, otherwise an
72 vop_link(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
76 if (vp->v_mount != dvp->v_mount) {
77 VOP_ABORTOP(dvp, cnp);
81 if (vp != dvp && (error = VOP_LOCK(vp))) {
82 VOP_ABORTOP(dvp, cnp);
87 * now that we've locked vp, we have to use out1 instead of out2
90 if (vp would have too many links) {
91 VOP_ABORTOP(dvp, cnp);
96 if (vp is immutable) {
97 VOP_ABORTOP(dvp, cnp);
103 * Increment link count of vp and write back the on-disc version of it.
109 * Add the new name to the directory.
114 kfree(cnp->cn_pnbuf, M_NAMEI);
126 the file is immutable
132 This man page was originally written by