/*
* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_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
- * 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.
- *
- * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * 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.
+ *
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
{
ipc_space_t space;
ipc_port_t kport;
- ipc_port_t nport;
kern_return_t kr;
int i;
if (kport == IP_NULL)
panic("ipc_task_init");
- nport = ipc_port_alloc_kernel();
- if (nport == IP_NULL)
- panic("ipc_task_init");
-
itk_lock_init(task);
task->itk_self = kport;
- task->itk_nself = nport;
task->itk_sself = ipc_port_make_send(kport);
task->itk_space = space;
space->is_fast = FALSE;
task_t task)
{
ipc_port_t kport;
- ipc_port_t nport;
itk_lock(task);
kport = task->itk_self;
if (kport != IP_NULL)
ipc_kobject_set(kport, (ipc_kobject_t) task, IKOT_TASK);
- nport = task->itk_nself;
- if (nport != IP_NULL)
- ipc_kobject_set(nport, (ipc_kobject_t) task, IKOT_TASK_NAME);
itk_unlock(task);
}
task_t task)
{
ipc_port_t kport;
- ipc_port_t nport;
itk_lock(task);
kport = task->itk_self;
if (kport != IP_NULL)
ipc_kobject_set(kport, IKO_NULL, IKOT_NONE);
- nport = task->itk_nself;
- if (nport != IP_NULL)
- ipc_kobject_set(nport, IKO_NULL, IKOT_NONE);
itk_unlock(task);
}
task_t task)
{
ipc_port_t kport;
- ipc_port_t nport;
int i;
itk_lock(task);
itk_unlock(task);
return;
}
- task->itk_self = IP_NULL;
-
- nport = task->itk_nself;
- assert(nport != IP_NULL);
- task->itk_nself = IP_NULL;
+ task->itk_self = IP_NULL;
itk_unlock(task);
/* release the naked send rights */
ipc_port_release_send(task->wired_ledger_port);
ipc_port_release_send(task->paged_ledger_port);
- /* destroy the kernel ports */
+ /* destroy the kernel port */
ipc_port_dealloc_kernel(kport);
- ipc_port_dealloc_kernel(nport);
}
/*
* Routine: ipc_task_reset
* Purpose:
* Reset a task's IPC state to protect it when
- * it enters an elevated security context. The
- * task name port can remain the same - since
- * it represents no specific privilege.
+ * it enters an elevated security context.
* Conditions:
* Nothing locked. The task must be suspended.
* (Or the current thread must be in the task.)
int which,
ipc_port_t *portp)
{
+ ipc_port_t *whichp;
ipc_port_t port;
if (task == TASK_NULL)
return KERN_INVALID_ARGUMENT;
- itk_lock(task);
- if (task->itk_self == IP_NULL) {
- itk_unlock(task);
- return KERN_FAILURE;
- }
-
switch (which) {
case TASK_KERNEL_PORT:
- port = ipc_port_copy_send(task->itk_sself);
- break;
-
- case TASK_NAME_PORT:
- port = ipc_port_make_send(task->itk_nself);
+ whichp = &task->itk_sself;
break;
case TASK_HOST_PORT:
- port = ipc_port_copy_send(task->itk_host);
+ whichp = &task->itk_host;
break;
case TASK_BOOTSTRAP_PORT:
- port = ipc_port_copy_send(task->itk_bootstrap);
+ whichp = &task->itk_bootstrap;
break;
case TASK_WIRED_LEDGER_PORT:
- port = ipc_port_copy_send(task->wired_ledger_port);
+ whichp = &task->wired_ledger_port;
break;
case TASK_PAGED_LEDGER_PORT:
- port = ipc_port_copy_send(task->paged_ledger_port);
+ whichp = &task->paged_ledger_port;
break;
default:
return KERN_INVALID_ARGUMENT;
}
+
+ itk_lock(task);
+ if (task->itk_self == IP_NULL) {
+ itk_unlock(task);
+ return KERN_FAILURE;
+ }
+
+ port = ipc_port_copy_send(*whichp);
itk_unlock(task);
*portp = port;
return (task);
}
-/*
- * Routine: convert_port_to_task_name
- * Purpose:
- * Convert from a port to a task name.
- * Doesn't consume the port ref; produces a task name ref,
- * which may be null.
- * Conditions:
- * Nothing locked.
- */
-task_name_t
-convert_port_to_task_name(
- ipc_port_t port)
-{
- task_name_t task = TASK_NULL;
-
- if (IP_VALID(port)) {
- ip_lock(port);
-
- if ( ip_active(port) &&
- (ip_kotype(port) == IKOT_TASK ||
- ip_kotype(port) == IKOT_TASK_NAME)) {
- task = (task_name_t)port->ip_kobject;
- assert(task != TASK_NAME_NULL);
-
- task_reference_internal(task);
- }
-
- ip_unlock(port);
- }
-
- return (task);
-}
-
/*
* Routine: convert_port_to_space
* Purpose:
return port;
}
-/*
- * Routine: convert_task_name_to_port
- * Purpose:
- * Convert from a task name ref to a port.
- * Consumes a task name ref; produces a naked send right
- * which may be invalid.
- * Conditions:
- * Nothing locked.
- */
-
-ipc_port_t
-convert_task_name_to_port(
- task_name_t task_name)
-{
- ipc_port_t port;
-
- itk_lock(task_name);
- if (task_name->itk_nself != IP_NULL)
- port = ipc_port_make_send(task_name->itk_nself);
- else
- port = IP_NULL;
- itk_unlock(task_name);
-
- task_name_deallocate(task_name);
- return port;
-}
-
/*
* Routine: convert_thread_to_port
* Purpose:
projects / apple / xnu.git / blobdiff