2 * This Cplant(TM) source code is the property of Sandia National
5 * This Cplant(TM) source code is copyrighted by Sandia National
8 * The redistribution of this Cplant(TM) source code is subject to the
9 * terms of the GNU Lesser General Public License
10 * (see cit/LGPL or http://www.gnu.org/licenses/lgpl.html)
12 * Cplant(TM) Copyright 1998-2003 Sandia Corporation.
13 * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
14 * license for use of this work by or on behalf of the US Government.
15 * Export of this program may require a license from the United States
20 * This library is free software; you can redistribute it and/or
21 * modify it under the terms of the GNU Lesser General Public
22 * License as published by the Free Software Foundation; either
23 * version 2.1 of the License, or (at your option) any later version.
25 * This library is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
28 * Lesser General Public License for more details.
30 * You should have received a copy of the GNU Lesser General Public
31 * License along with this library; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 * Questions or comments about this library should be sent to:
37 * Sandia National Laboratories, New Mexico
39 * Albuquerque, NM 87185-1110
48 #include <sys/types.h>
51 #include <sys/queue.h>
58 SYSIO_INTERFACE_NAME(rename)(const char *oldpath, const char *newpath)
62 struct pnode *old, *new;
63 struct pnode_base *nxtpb, *pb;
64 SYSIO_INTERFACE_DISPLAY_BLOCK;
66 SYSIO_INTERFACE_ENTER;
69 * Neither old nor new may be the empty string.
71 if (*oldpath == '\0' || *newpath == '\0')
72 SYSIO_INTERFACE_RETURN(-1, -ENOENT);
75 * Resolve oldpath to a path node.
77 INTENT_INIT(&intent, INT_UPDPARENT, NULL, NULL);
78 err = _sysio_namei(_sysio_cwd, oldpath, ND_NOFOLLOW, &intent, &old);
82 * Resolve newpath to a path node.
84 INTENT_INIT(&intent, INT_UPDPARENT, NULL, NULL);
86 _sysio_namei(_sysio_cwd,
88 ND_NOFOLLOW | ND_NEGOK,
95 * Don't allow mount points to move.
97 if (old->p_mount->mnt_root == old || old->p_cover ||
98 new->p_mount->mnt_root == new) {
104 * No xdev renames either.
106 if (old->p_mount->mnt_fs != new->p_mount->mnt_fs) {
112 * Make sure the old pnode can't be found in the ancestor chain
113 * for the new. If it can, they are trying to move into a subdirectory
119 nxtpb = pb->pb_parent;
120 if (pb == old->p_base) {
127 * If old == new, we're done.
129 if (old->p_base->pb_ino == new->p_base->pb_ino)
132 if (new->p_base->pb_ino) {
134 * Existing entry. We're replacing the new. Make sure that's
137 if (S_ISDIR(new->p_base->pb_ino->i_stbuf.st_mode)) {
138 if (!S_ISDIR(old->p_base->pb_ino->i_stbuf.st_mode)) {
142 if (new->p_base->pb_ino->i_stbuf.st_nlink > 2) {
146 } else if (S_ISDIR(old->p_base->pb_ino->i_stbuf.st_mode)) {
153 * It's not impossible to clean up the altered name space after
154 * a rename. However, it is onerous and I don't want to do it right
155 * now. If it becomes an issue, we can do it later. For now, I've
156 * elected to use the semantic that says, basically, the entire
157 * sub-tree must be unreferenced. That's per POSIX, but it's a nasty
158 * thing to do to the caller.
160 if (_sysio_p_prune(new) != 1) {
165 * Use the parent node operations to request the task in case the
166 * driver is implemented using differentiated inode operations based
167 * on file type, such as incore does.
169 err = old->p_parent->p_base->pb_ino->i_ops.inop_rename(old, new);
173 * Reflect the successful rename in the active name space graph.
175 if (new->p_base->pb_ino)
176 I_GONE(new->p_base->pb_ino);
177 new->p_base->pb_ino = old->p_base->pb_ino;
178 old->p_base->pb_ino = NULL;
189 SYSIO_INTERFACE_RETURN(err ? -1 : 0, err);