3 .\" Copyright (c) 1996 Doug Rabson
5 .\" All rights reserved.
7 .\" This program is free software.
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20 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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29 .\" $FreeBSD: src/share/man/man9/VOP_LINK.9,v 1.9.2.3 2001/12/17 11:30:18 ru Exp $
30 .\" $DragonFly: src/share/man/man9/VOP_LINK.9,v 1.3 2003/07/27 05:36:06 hmp Exp $
37 .Nd create a new name for a file
42 .Fn VOP_LINK "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp"
44 This links a new name in the specified directory to an existing file.
49 the vnode of the directory
51 the vnode of the file to be linked
53 pathname information about the file
56 The pathname info must be released on exit. The directory and
57 file vnodes should NOT be released on exit.
61 is locked on entry and should remain locked on return.
64 is not locked on entry and should remain that way on return.
65 If your VOP code locks
67 it must be sure to unlock prior to returning.
69 Zero is returned if the file was linked successfully, otherwise an
74 vop_link(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
78 if (vp->v_mount != dvp->v_mount) {
79 VOP_ABORTOP(dvp, cnp);
83 if (vp != dvp && (error = VOP_LOCK(vp))) {
84 VOP_ABORTOP(dvp, cnp);
89 * now that we've locked vp, we have to use out1 instead of out2
92 if (vp would have too many links) {
93 VOP_ABORTOP(dvp, cnp);
98 if (vp is immutable) {
99 VOP_ABORTOP(dvp, cnp);
105 * Increment link count of vp and write back the on-disc version of it.
111 * Add the new name to the directory.
116 free(cnp->cn_pnbuf, M_NAMEI);
128 the file is immutable
134 This man page was originally written by