xnu-344.21.73.tar.gz

[apple/xnu.git] / bsd / miscfs / devfs / devfs_tree.c

diff --git a/bsd/miscfs/devfs/devfs_tree.c b/bsd/miscfs/devfs/devfs_tree.c
index 9707f8a9c154242322070bef3a1592e3e4a57a36..b380cb3aa3f89a8bed330e2d086b68570362e56c 100644 (file)
--- a/bsd/miscfs/devfs/devfs_tree.c
+++ b/bsd/miscfs/devfs/devfs_tree.c
@@ -3,19 +3,22 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -745,6 +748,7 @@ devfs_remove(void *dirent_p)
        devnode_t * dnp = ((devdirent_t *)dirent_p)->de_dnp;
        devnode_t * dnp2;
        boolean_t   funnel_state;
+       boolean_t   lastlink;
 
        funnel_state = thread_funnel_set(kernel_flock, TRUE);
 
@@ -765,8 +769,11 @@ devfs_remove(void *dirent_p)
                dnp->dn_nextsibling->dn_prevsiblingp = &(dnp->dn_nextsibling);
                dnp2->dn_nextsibling = dnp2;
                dnp2->dn_prevsiblingp = &(dnp2->dn_nextsibling);
-               while(dnp2->dn_linklist) {
-                       dev_free_name(dnp2->dn_linklist);
+               if(dnp2->dn_linklist) {
+                       do {
+                               lastlink = (1 == dnp2->dn_links);
+                               dev_free_name(dnp2->dn_linklist);
+                       } while (!lastlink);
                }
        }
 
@@ -775,8 +782,11 @@ devfs_remove(void *dirent_p)
         * If we are not running in SPLIT_DEVS mode, then
         * THIS is what gets rid of the propogated nodes.
         */
-       while(dnp->dn_linklist) {
-               dev_free_name(dnp->dn_linklist);
+       if(dnp->dn_linklist) {
+               do {
+                       lastlink = (1 == dnp->dn_links);
+                       dev_free_name(dnp->dn_linklist);
+               } while (!lastlink);
        }
        DEVFS_UNLOCK(0);
 out: