xnu-1699.22.73.tar.gz

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

diff --git a/osfmk/kern/ipc_host.c b/osfmk/kern/ipc_host.c
index 0a36ae65cfdc5b5a6aac4f0ececa8e4969e072dd..65f1035fe92a267f4561cd2b7a069c3c548b80a4 100644 (file)
--- a/osfmk/kern/ipc_host.c
+++ b/osfmk/kern/ipc_host.c
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 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,
  * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
 /*
  * @OSF_COPYRIGHT@


@@ -75,14 +81,6 @@
  * Forward declarations
  */
 
  * Forward declarations
  */
 

-void
-ipc_processor_terminate(
-       processor_t     processor);
-
-void
-ipc_processor_disable(
-       processor_t     processor);
-

 boolean_t
 ref_pset_port_locked(
        ipc_port_t port, boolean_t matchn, processor_set_t *ppset);
 boolean_t
 ref_pset_port_locked(
        ipc_port_t port, boolean_t matchn, processor_set_t *ppset);


@@ -91,12 +89,15 @@ ref_pset_port_locked(
  *     ipc_host_init: set up various things.
  */
 
  *     ipc_host_init: set up various things.
  */
 

+extern lck_grp_t               host_notify_lock_grp;
+extern lck_attr_t              host_notify_lock_attr;
+

 void ipc_host_init(void)
 {
        ipc_port_t      port;
        int i;
 
 void ipc_host_init(void)
 {
        ipc_port_t      port;
        int i;
 

-       mutex_init(&realhost.lock, 0);
+       lck_mtx_init(&realhost.lock, &host_notify_lock_grp, &host_notify_lock_attr);

 
        /*
         *      Allocate and set up the two host ports.
 
        /*
         *      Allocate and set up the two host ports.


@@ -134,8 +135,8 @@ void ipc_host_init(void)
        /*
         *      Set up ipc for default processor set.
         */
        /*
         *      Set up ipc for default processor set.
         */

-       ipc_pset_init(&default_pset);
-       ipc_pset_enable(&default_pset);
+       ipc_pset_init(&pset0);
+       ipc_pset_enable(&pset0);

 
        /*
         *      And for master processor
 
        /*
         *      And for master processor


@@ -199,51 +200,6 @@ ipc_processor_enable(
        myport = processor->processor_self;
        ipc_kobject_set(myport, (ipc_kobject_t) processor, IKOT_PROCESSOR);
 }
        myport = processor->processor_self;
        ipc_kobject_set(myport, (ipc_kobject_t) processor, IKOT_PROCESSOR);
 }

-
-/*
- *     ipc_processor_disable:
- *
- *     Disable ipc control of processor by clearing port object.
- */
-void
-ipc_processor_disable(
-       processor_t     processor)
-{
-       ipc_port_t      myport;
-
-       myport = processor->processor_self;
-       if (myport == IP_NULL)
-               return;
-       ipc_kobject_set(myport, IKO_NULL, IKOT_NONE);
-}
-
-/*
- *     ipc_processor_terminate:
- *
- *     Processor is off-line.  Destroy ipc control port.
- */
-void
-ipc_processor_terminate(
-       processor_t     processor)
-{
-       ipc_port_t      myport;
-       spl_t           s;
-
-       s = splsched();
-       processor_lock(processor);
-       myport = processor->processor_self;
-       if (myport == IP_NULL) {
-               processor_unlock(processor);
-               splx(s);
-               return;
-       }
-
-       processor->processor_self = IP_NULL;
-       processor_unlock(processor);
-       splx(s);
-
-       ipc_port_dealloc_kernel(myport);
-}

        
 /*
  *     ipc_pset_init:
        
 /*
  *     ipc_pset_init:


@@ -277,51 +233,14 @@ void
 ipc_pset_enable(
        processor_set_t         pset)
 {
 ipc_pset_enable(
        processor_set_t         pset)
 {

-       pset_lock(pset);
-       if (pset->active) {
-               ipc_kobject_set(pset->pset_self,
-                               (ipc_kobject_t) pset, IKOT_PSET);
-               ipc_kobject_set(pset->pset_name_self,
-                               (ipc_kobject_t) pset, IKOT_PSET_NAME);
-               pset->ref_count += 2;
-       }
-       pset_unlock(pset);
-}
-
-/*
- *     ipc_pset_disable:
- *
- *     Disable ipc access to a processor set by clearing the port objects.
- *     Caller must hold pset lock and a reference to the pset.  Ok to
- *     just decrement pset reference count as a result.
- */
-void
-ipc_pset_disable(
-       processor_set_t         pset)
-{
-       ipc_kobject_set(pset->pset_self, IKO_NULL, IKOT_NONE);
-       ipc_kobject_set(pset->pset_name_self, IKO_NULL, IKOT_NONE);
-       pset->ref_count -= 2;
-}
-
-/*
- *     ipc_pset_terminate:
- *
- *     Processor set is dead.  Deallocate the ipc control structures.
- */
-void
-ipc_pset_terminate(
-       processor_set_t         pset)
-{
-       ipc_port_dealloc_kernel(pset->pset_self);
-       ipc_port_dealloc_kernel(pset->pset_name_self);
+       ipc_kobject_set(pset->pset_self, (ipc_kobject_t) pset, IKOT_PSET);
+       ipc_kobject_set(pset->pset_name_self, (ipc_kobject_t) pset, IKOT_PSET_NAME);

 }
 
 /*
 }
 
 /*

- *     processor_set_default, processor_set_default_priv:
+ *     processor_set_default:

  *
  *

- *     Return ports for manipulating default_processor set.  MiG code
- *     differentiates between these two routines.
+ *     Return ports for manipulating default_processor set.

  */
 kern_return_t
 processor_set_default(
  */
 kern_return_t
 processor_set_default(


@@ -331,9 +250,9 @@ processor_set_default(
        if (host == HOST_NULL)
                return(KERN_INVALID_ARGUMENT);
 
        if (host == HOST_NULL)
                return(KERN_INVALID_ARGUMENT);
 

-       *pset = &default_pset;
-       pset_reference(*pset);
-       return(KERN_SUCCESS);
+       *pset = &pset0;
+
+       return (KERN_SUCCESS);

 }
 
 /*
 }
 
 /*


@@ -477,18 +396,13 @@ ref_pset_port_locked(ipc_port_t port, boolean_t matchn, processor_set_t *ppset)
        pset = PROCESSOR_SET_NULL;
        if (ip_active(port) &&
                ((ip_kotype(port) == IKOT_PSET) ||
        pset = PROCESSOR_SET_NULL;
        if (ip_active(port) &&
                ((ip_kotype(port) == IKOT_PSET) ||

-                (matchn && (ip_kotype(port) == IKOT_PSET_NAME)))) {
+                       (matchn && (ip_kotype(port) == IKOT_PSET_NAME)))) {

                pset = (processor_set_t) port->ip_kobject;
                pset = (processor_set_t) port->ip_kobject;

-               if (!pset_lock_try(pset)) {
-                       ip_unlock(port);
-                       mutex_pause();
-                       return (FALSE);
-               }
-               pset->ref_count++;
-               pset_unlock(pset);

        }
        }

+

        *ppset = pset;
        ip_unlock(port);
        *ppset = pset;
        ip_unlock(port);

+

        return (TRUE);
 }
 
        return (TRUE);
 }
 


@@ -516,6 +430,7 @@ convert_host_to_port(
  *     Purpose:
  *             Convert from a processor to a port.
  *             Produces a naked send right which may be invalid.
  *     Purpose:
  *             Convert from a processor to a port.
  *             Produces a naked send right which may be invalid.

+ *             Processors are not reference counted, so nothing to release.

  *     Conditions:
  *             Nothing locked.
  */
  *     Conditions:
  *             Nothing locked.
  */


@@ -524,20 +439,10 @@ ipc_port_t
 convert_processor_to_port(
        processor_t             processor)
 {
 convert_processor_to_port(
        processor_t             processor)
 {

-       ipc_port_t port;
-       spl_t   s;
-
-       s = splsched();
-       processor_lock(processor);
-
-       if (processor->processor_self != IP_NULL)
-               port = ipc_port_make_send(processor->processor_self);
-       else
-               port = IP_NULL;
-
-       processor_unlock(processor);
-       splx(s);
+       ipc_port_t port = processor->processor_self;

 
 

+       if (port != IP_NULL)
+               port = ipc_port_make_send(port);

        return port;
 }
 
        return port;
 }
 


@@ -545,8 +450,8 @@ convert_processor_to_port(
  *     Routine:        convert_pset_to_port
  *     Purpose:
  *             Convert from a pset to a port.
  *     Routine:        convert_pset_to_port
  *     Purpose:
  *             Convert from a pset to a port.

- *             Consumes a pset ref; produces a naked send right
- *             which may be invalid.
+ *             Produces a naked send right which may be invalid.
+ *             Processor sets are not reference counted, so nothing to release.

  *     Conditions:
  *             Nothing locked.
  */
  *     Conditions:
  *             Nothing locked.
  */


@@ -555,16 +460,11 @@ ipc_port_t
 convert_pset_to_port(
        processor_set_t         pset)
 {
 convert_pset_to_port(
        processor_set_t         pset)
 {

-       ipc_port_t port;
+       ipc_port_t port = pset->pset_self;

 
 

-       pset_lock(pset);
-       if (pset->active)
-               port = ipc_port_make_send(pset->pset_self);
-       else
-               port = IP_NULL;
-       pset_unlock(pset);
+       if (port != IP_NULL)
+               port = ipc_port_make_send(port);

 
 

-       pset_deallocate(pset);

        return port;
 }
 
        return port;
 }
 


@@ -572,8 +472,8 @@ convert_pset_to_port(
  *     Routine:        convert_pset_name_to_port
  *     Purpose:
  *             Convert from a pset to a port.
  *     Routine:        convert_pset_name_to_port
  *     Purpose:
  *             Convert from a pset to a port.

- *             Consumes a pset ref; produces a naked send right
- *             which may be invalid.
+ *             Produces a naked send right which may be invalid.
+ *             Processor sets are not reference counted, so nothing to release.

  *     Conditions:
  *             Nothing locked.
  */
  *     Conditions:
  *             Nothing locked.
  */


@@ -582,16 +482,11 @@ ipc_port_t
 convert_pset_name_to_port(
        processor_set_name_t            pset)
 {
 convert_pset_name_to_port(
        processor_set_name_t            pset)
 {

-       ipc_port_t port;
+       ipc_port_t port = pset->pset_name_self;

 
 

-       pset_lock(pset);
-       if (pset->active)
-               port = ipc_port_make_send(pset->pset_name_self);
-       else
-               port = IP_NULL;
-       pset_unlock(pset);
+       if (port != IP_NULL)
+               port = ipc_port_make_send(port);

 
 

-       pset_deallocate(pset);

        return port;
 }
 
        return port;
 }
 


@@ -654,12 +549,12 @@ host_set_exception_ports(
 
        assert(host_priv == &realhost);
 
 
        assert(host_priv == &realhost);
 

-       if (exception_mask & ~EXC_MASK_ALL) {
+       if (exception_mask & ~EXC_MASK_VALID) {

                return KERN_INVALID_ARGUMENT;
        }
 
        if (IP_VALID(new_port)) {
                return KERN_INVALID_ARGUMENT;
        }
 
        if (IP_VALID(new_port)) {

-               switch (new_behavior) {
+               switch (new_behavior & ~MACH_EXCEPTION_CODES) {

                case EXCEPTION_DEFAULT:
                case EXCEPTION_STATE:
                case EXCEPTION_STATE_IDENTITY:
                case EXCEPTION_DEFAULT:
                case EXCEPTION_STATE:
                case EXCEPTION_STATE_IDENTITY:


@@ -731,7 +626,7 @@ host_get_exception_ports(
        if (host_priv == HOST_PRIV_NULL)
                return KERN_INVALID_ARGUMENT;
 
        if (host_priv == HOST_PRIV_NULL)
                return KERN_INVALID_ARGUMENT;
 

-       if (exception_mask & ~EXC_MASK_ALL) {
+       if (exception_mask & ~EXC_MASK_VALID) {

                return KERN_INVALID_ARGUMENT;
        }
 
                return KERN_INVALID_ARGUMENT;
        }
 


@@ -796,7 +691,7 @@ host_swap_exception_ports(
        if (host_priv == HOST_PRIV_NULL)
                return KERN_INVALID_ARGUMENT;
 
        if (host_priv == HOST_PRIV_NULL)
                return KERN_INVALID_ARGUMENT;
 

-       if (exception_mask & ~EXC_MASK_ALL) {
+       if (exception_mask & ~EXC_MASK_VALID) {

                return KERN_INVALID_ARGUMENT;
        }
 
                return KERN_INVALID_ARGUMENT;
        }