xnu-1699.22.81.tar.gz

[apple/xnu.git] / osfmk / kern / host_notify.c

diff --git a/osfmk/kern/host_notify.c b/osfmk/kern/host_notify.c
index 9497b786329810d75990c78b0cfdcea9cc04da47..1ca87dcaf174d9e944969a40fa95c23d057df9ef 100644 (file)
--- a/osfmk/kern/host_notify.c
+++ b/osfmk/kern/host_notify.c
@@ -1,31 +1,29 @@
 /*
- * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2009 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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@
- */
-/*
- * Copyright (c) 2003 Apple Computer, Inc.  All rights reserved.
- *
- * HISTORY
- *
- * 16 January 2003 (debo)
- *  Created.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #include <mach/mach_types.h>
@@ -39,8 +37,13 @@
 
 #include "mach/host_notify_reply.h"
 
+decl_lck_mtx_data(,host_notify_lock)
+
+lck_mtx_ext_t                  host_notify_lock_ext;
+lck_grp_t                              host_notify_lock_grp;
+lck_attr_t                             host_notify_lock_attr;
+static lck_grp_attr_t  host_notify_lock_grp_attr;
 static zone_t                  host_notify_zone;
-decl_mutex_data(static,host_notify_lock)
 
 static queue_head_t            host_notify_queue[HOST_NOTIFY_TYPE_MAX+1];
 
@@ -62,7 +65,11 @@ host_notify_init(void)
        for (i = 0; i <= HOST_NOTIFY_TYPE_MAX; i++)
                queue_init(&host_notify_queue[i]);
 
-       mutex_init(&host_notify_lock, 0);
+       lck_grp_attr_setdefault(&host_notify_lock_grp_attr);
+       lck_grp_init(&host_notify_lock_grp, "host_notify", &host_notify_lock_grp_attr);
+       lck_attr_setdefault(&host_notify_lock_attr);
+
+       lck_mtx_init_ext(&host_notify_lock, &host_notify_lock_ext, &host_notify_lock_grp, &host_notify_lock_attr);
 
        i = sizeof (struct host_notify_entry);
        host_notify_zone =
@@ -90,13 +97,13 @@ host_request_notification(
        if (entry == NULL)
                return (KERN_RESOURCE_SHORTAGE);
 
-       mutex_lock(&host_notify_lock);
+       lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);
        if (!ip_active(port) || ip_kotype(port) != IKOT_NONE) {
                ip_unlock(port);
 
-               mutex_unlock(&host_notify_lock);
+               lck_mtx_unlock(&host_notify_lock);
                zfree(host_notify_zone, entry);
 
                return (KERN_FAILURE);
@@ -107,7 +114,7 @@ host_request_notification(
        ip_unlock(port);
 
        enqueue_tail(&host_notify_queue[notify_type], (queue_entry_t)entry);
-       mutex_unlock(&host_notify_lock);
+       lck_mtx_unlock(&host_notify_lock);
 
        return (KERN_SUCCESS);
 }
@@ -118,7 +125,7 @@ host_notify_port_destroy(
 {
        host_notify_t           entry;
 
-       mutex_lock(&host_notify_lock);
+       lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);
        if (ip_kotype(port) == IKOT_HOST_NOTIFY) {
@@ -128,8 +135,8 @@ host_notify_port_destroy(
                ip_unlock(port);
 
                assert(entry->port == port);
-               remqueue(NULL, (queue_entry_t)entry);
-               mutex_unlock(&host_notify_lock);
+               remqueue((queue_entry_t)entry);
+               lck_mtx_unlock(&host_notify_lock);
                zfree(host_notify_zone, entry);
 
                ipc_port_release_sonce(port);
@@ -137,7 +144,7 @@ host_notify_port_destroy(
        }
        ip_unlock(port);
 
-       mutex_unlock(&host_notify_lock);
+       lck_mtx_unlock(&host_notify_lock);
 }
 
 static void
@@ -148,7 +155,7 @@ host_notify_all(
 {
        queue_t         notify_queue = &host_notify_queue[notify_type];
 
-       mutex_lock(&host_notify_lock);
+       lck_mtx_lock(&host_notify_lock);
 
        if (!queue_empty(notify_queue)) {
                queue_head_t            send_queue;
@@ -177,18 +184,18 @@ host_notify_all(
                        ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
                        ip_unlock(port);
 
-                       mutex_unlock(&host_notify_lock);
+                       lck_mtx_unlock(&host_notify_lock);
                        zfree(host_notify_zone, entry);
 
                        msg->msgh_remote_port = port;
 
-                       (void) mach_msg_send_from_kernel(msg, msg_size);
+                       (void) mach_msg_send_from_kernel_proper(msg, msg_size);
 
-                       mutex_lock(&host_notify_lock);
+                       lck_mtx_lock(&host_notify_lock);
                }
        }
 
-       mutex_unlock(&host_notify_lock);
+       lck_mtx_unlock(&host_notify_lock);
 }
 
 void