xnu-7195.60.75.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 1ca87dcaf174d9e944969a40fa95c23d057df9ef..024a9b1c656f88895fd924f0edfafee363f06b1e 100644 (file)
--- a/osfmk/kern/host_notify.c
+++ b/osfmk/kern/host_notify.c
@@ -1,8 +1,8 @@
 /*
 /*

- * Copyright (c) 2003-2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2020 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

- * 
+ *

  * 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
  * 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


@@ -11,10 +11,10 @@
  * 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.
  * 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.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 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,
  * 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,


@@ -22,7 +22,7 @@
  * 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.
  * 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_OSREFERENCE_LICENSE_HEADER_END@
  */
 
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 


@@ -37,76 +37,70 @@
 
 #include "mach/host_notify_reply.h"
 
 
 #include "mach/host_notify_reply.h"
 

-decl_lck_mtx_data(,host_notify_lock)
+struct host_notify_entry {
+       queue_chain_t           entries;
+       ipc_port_t              port;
+};
+typedef struct host_notify_entry        *host_notify_t;

 
 

-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;
+LCK_GRP_DECLARE(host_notify_lock_grp, "host_notify");
+LCK_MTX_EARLY_DECLARE(host_notify_lock, &host_notify_lock_grp);

 
 

-static queue_head_t            host_notify_queue[HOST_NOTIFY_TYPE_MAX+1];
+static ZONE_DECLARE(host_notify_zone, "host_notify",
+    sizeof(struct host_notify_entry), ZC_NONE);

 
 

-static mach_msg_id_t   host_notify_replyid[HOST_NOTIFY_TYPE_MAX+1] =
-                                                               { HOST_CALENDAR_CHANGED_REPLYID };
+static queue_head_t     host_notify_queue[HOST_NOTIFY_TYPE_MAX + 1];

 
 

-struct host_notify_entry {
-       queue_chain_t           entries;
-       ipc_port_t                      port;
-};
-
-typedef struct host_notify_entry       *host_notify_t;
+static mach_msg_id_t    host_notify_replyid[HOST_NOTIFY_TYPE_MAX + 1] =
+{ HOST_CALENDAR_CHANGED_REPLYID,
+  HOST_CALENDAR_SET_REPLYID };

 
 

-void
+__startup_func
+static void

 host_notify_init(void)
 {
 host_notify_init(void)
 {

-       int             i;
-
-       for (i = 0; i <= HOST_NOTIFY_TYPE_MAX; i++)
+       for (int i = 0; i <= HOST_NOTIFY_TYPE_MAX; i++) {

                queue_init(&host_notify_queue[i]);
                queue_init(&host_notify_queue[i]);

-
-       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 =
-                       zinit(i, (4096 * i), (16 * i), "host_notify");
+       }

 }
 }

+STARTUP(MACH_IPC, STARTUP_RANK_FIRST, host_notify_init);

 
 kern_return_t
 host_request_notification(
 
 kern_return_t
 host_request_notification(

-       host_t                                  host,
-       host_flavor_t                   notify_type,
-       ipc_port_t                              port)
+       host_t                                  host,
+       host_flavor_t                   notify_type,
+       ipc_port_t                              port)

 {
 {

-       host_notify_t           entry;
+       host_notify_t           entry;

 
 

-       if (host == HOST_NULL)
-               return (KERN_INVALID_ARGUMENT);
+       if (host == HOST_NULL) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
 

-       if (!IP_VALID(port))
-               return (KERN_INVALID_CAPABILITY);
+       if (!IP_VALID(port)) {
+               return KERN_INVALID_CAPABILITY;
+       }

 
 

-       if (notify_type > HOST_NOTIFY_TYPE_MAX || notify_type < 0)
-               return (KERN_INVALID_ARGUMENT);
+       if (notify_type > HOST_NOTIFY_TYPE_MAX || notify_type < 0) {
+               return KERN_INVALID_ARGUMENT;
+       }

 
        entry = (host_notify_t)zalloc(host_notify_zone);
 
        entry = (host_notify_t)zalloc(host_notify_zone);

-       if (entry == NULL)
-               return (KERN_RESOURCE_SHORTAGE);
+       if (entry == NULL) {
+               return KERN_RESOURCE_SHORTAGE;
+       }

 
        lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);
 
        lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);

-       if (!ip_active(port) || ip_kotype(port) != IKOT_NONE) {
+       if (!ip_active(port) || port->ip_tempowner || port->ip_specialreply ||
+           ip_is_kolabeled(port) || ip_kotype(port) != IKOT_NONE) {

                ip_unlock(port);
 
                lck_mtx_unlock(&host_notify_lock);
                zfree(host_notify_zone, entry);
 
                ip_unlock(port);
 
                lck_mtx_unlock(&host_notify_lock);
                zfree(host_notify_zone, entry);
 

-               return (KERN_FAILURE);
+               return KERN_FAILURE;

        }
 
        entry->port = port;
        }
 
        entry->port = port;


@@ -116,20 +110,20 @@ host_request_notification(
        enqueue_tail(&host_notify_queue[notify_type], (queue_entry_t)entry);
        lck_mtx_unlock(&host_notify_lock);
 
        enqueue_tail(&host_notify_queue[notify_type], (queue_entry_t)entry);
        lck_mtx_unlock(&host_notify_lock);
 

-       return (KERN_SUCCESS);
+       return KERN_SUCCESS;

 }
 
 void
 host_notify_port_destroy(
 }
 
 void
 host_notify_port_destroy(

-       ipc_port_t                      port)
+       ipc_port_t                      port)

 {
 {

-       host_notify_t           entry;
+       host_notify_t           entry;

 
        lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);
        if (ip_kotype(port) == IKOT_HOST_NOTIFY) {
 
        lck_mtx_lock(&host_notify_lock);
 
        ip_lock(port);
        if (ip_kotype(port) == IKOT_HOST_NOTIFY) {

-               entry = (host_notify_t)port->ip_kobject;
+               entry = (host_notify_t)ip_get_kobject(port);

                assert(entry != NULL);
                ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
                ip_unlock(port);
                assert(entry != NULL);
                ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
                ip_unlock(port);


@@ -149,17 +143,17 @@ host_notify_port_destroy(
 
 static void
 host_notify_all(
 
 static void
 host_notify_all(

-       host_flavor_t           notify_type,
-       mach_msg_header_t       *msg,
-       mach_msg_size_t         msg_size)
+       host_flavor_t           notify_type,
+       mach_msg_header_t       *msg,
+       mach_msg_size_t         msg_size)

 {
 {

-       queue_t         notify_queue = &host_notify_queue[notify_type];
+       queue_t         notify_queue = &host_notify_queue[notify_type];

 
        lck_mtx_lock(&host_notify_lock);
 
        if (!queue_empty(notify_queue)) {
 
        lck_mtx_lock(&host_notify_lock);
 
        if (!queue_empty(notify_queue)) {

-               queue_head_t            send_queue;
-               host_notify_t           entry;
+               queue_head_t            send_queue;
+               host_notify_t           entry;

 
                send_queue = *notify_queue;
                queue_init(notify_queue);
 
                send_queue = *notify_queue;
                queue_init(notify_queue);


@@ -167,20 +161,21 @@ host_notify_all(
                send_queue.next->prev = &send_queue;
                send_queue.prev->next = &send_queue;
 
                send_queue.next->prev = &send_queue;
                send_queue.prev->next = &send_queue;
 

-               msg->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE, 0);
+               msg->msgh_bits =
+                   MACH_MSGH_BITS_SET(MACH_MSG_TYPE_MOVE_SEND_ONCE, 0, 0, 0);

                msg->msgh_local_port = MACH_PORT_NULL;
                msg->msgh_local_port = MACH_PORT_NULL;

+               msg->msgh_voucher_port = MACH_PORT_NULL;

                msg->msgh_id = host_notify_replyid[notify_type];
                msg->msgh_id = host_notify_replyid[notify_type];

-               msg->msgh_reserved = 0;

 
                while ((entry = (host_notify_t)dequeue(&send_queue)) != NULL) {
 
                while ((entry = (host_notify_t)dequeue(&send_queue)) != NULL) {

-                       ipc_port_t              port;
+                       ipc_port_t              port;

 
                        port = entry->port;
                        assert(port != IP_NULL);
 
                        ip_lock(port);
                        assert(ip_kotype(port) == IKOT_HOST_NOTIFY);
 
                        port = entry->port;
                        assert(port != IP_NULL);
 
                        ip_lock(port);
                        assert(ip_kotype(port) == IKOT_HOST_NOTIFY);

-                       assert(port->ip_kobject == (ipc_kobject_t)entry);
+                       assert(ip_get_kobject(port) == (ipc_kobject_t)entry);

                        ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
                        ip_unlock(port);
 
                        ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
                        ip_unlock(port);
 


@@ -201,7 +196,15 @@ host_notify_all(
 void
 host_notify_calendar_change(void)
 {
 void
 host_notify_calendar_change(void)
 {

-       __Request__host_calendar_changed_t      msg;
+       __Request__host_calendar_changed_t      msg;
+
+       host_notify_all(HOST_NOTIFY_CALENDAR_CHANGE, &msg.Head, sizeof(msg));
+}
+
+void
+host_notify_calendar_set(void)
+{
+       __Request__host_calendar_set_t  msg;

 
 

-       host_notify_all(HOST_NOTIFY_CALENDAR_CHANGE, &msg.Head, sizeof (msg));
+       host_notify_all(HOST_NOTIFY_CALENDAR_SET, &msg.Head, sizeof(msg));

 }
 }