[apple/xnu.git] / osfmk / voucher / ipc_pthread_priority.c

/*
 * Copyright (c) 2012-2016 Apple Inc. All rights reserved.
 *
 * @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
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#include <voucher/ipc_pthread_priority_types.h>
#include <voucher/ipc_pthread_priority_internal.h>
#include <mach/mach_types.h>
#include <mach/kern_return.h>
#include <ipc/ipc_port.h>
#include <mach/mach_vm.h>
#include <mach/vm_map.h>
#include <vm/vm_map.h>
#include <mach/host_priv.h>
#include <mach/host_special_ports.h>
#include <kern/host.h>
#include <kern/kalloc.h>
#include <kern/ledger.h>
#include <sys/kdebug.h>
#include <IOKit/IOBSD.h>
#include <mach/mach_voucher_attr_control.h>
#include <pthread/priority_private.h>

ipc_voucher_attr_control_t  ipc_pthread_priority_voucher_attr_control;    /* communication channel from PTHPRIORITY to voucher system */

#define IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(x) ((mach_voucher_attr_value_handle_t)(x))
#define HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(x) ((ipc_pthread_priority_value_t)(x))

kern_return_t
ipc_pthread_priority_release_value(
	ipc_voucher_attr_manager_t __assert_only manager,
	mach_voucher_attr_key_t __assert_only key,
	mach_voucher_attr_value_handle_t value,
	mach_voucher_attr_value_reference_t sync);

kern_return_t
ipc_pthread_priority_get_value(
	ipc_voucher_attr_manager_t __assert_only manager,
	mach_voucher_attr_key_t __assert_only key,
	mach_voucher_attr_recipe_command_t command,
	mach_voucher_attr_value_handle_array_t prev_values,
	mach_msg_type_number_t __assert_only prev_value_count,
	mach_voucher_attr_content_t recipe,
	mach_voucher_attr_content_size_t recipe_size,
	mach_voucher_attr_value_handle_t *out_value,
	mach_voucher_attr_value_flags_t  *out_flags,
	ipc_voucher_t *out_value_voucher);

kern_return_t
ipc_pthread_priority_extract_content(
	ipc_voucher_attr_manager_t __assert_only manager,
	mach_voucher_attr_key_t __assert_only key,
	mach_voucher_attr_value_handle_array_t values,
	mach_msg_type_number_t value_count,
	mach_voucher_attr_recipe_command_t *out_command,
	mach_voucher_attr_content_t out_recipe,
	mach_voucher_attr_content_size_t *in_out_recipe_size);

kern_return_t
ipc_pthread_priority_command(
	ipc_voucher_attr_manager_t __assert_only manager,
	mach_voucher_attr_key_t __assert_only key,
	mach_voucher_attr_value_handle_array_t values,
	mach_msg_type_number_t value_count,
	mach_voucher_attr_command_t command,
	mach_voucher_attr_content_t in_content,
	mach_voucher_attr_content_size_t in_content_size,
	mach_voucher_attr_content_t out_content,
	mach_voucher_attr_content_size_t *in_out_content_size);

void
ipc_pthread_priority_release(ipc_voucher_attr_manager_t __assert_only manager);

/*
 * communication channel from voucher system to IPC_PTHREAD_PRIORITY
 */
struct ipc_voucher_attr_manager ipc_pthread_priority_manager = {
	.ivam_release_value    = ipc_pthread_priority_release_value,
	.ivam_get_value        = ipc_pthread_priority_get_value,
	.ivam_extract_content  = ipc_pthread_priority_extract_content,
	.ivam_command	       = ipc_pthread_priority_command,
	.ivam_release          = ipc_pthread_priority_release,
	.ivam_flags            = IVAM_FLAGS_NONE,
};

/*
 * Routine: ipc_pthread_priority_init
 * Purpose: Initialize the IPC_PTHREAD_PRIORITY subsystem.
 * Returns: None.
 */
void
ipc_pthread_priority_init()
{
	kern_return_t kr = KERN_SUCCESS;

	/* Register the ipc_pthread_priority manager with the Vouchers sub system. */
	kr = ipc_register_well_known_mach_voucher_attr_manager(
	                &ipc_pthread_priority_manager,
	                0,
	                MACH_VOUCHER_ATTR_KEY_PTHPRIORITY,
	                &ipc_pthread_priority_voucher_attr_control);
	if (kr != KERN_SUCCESS )
		panic("IPC_PTHREAD_PRIORITY subsystem initialization failed");

	kprintf("IPC_PTHREAD_PRIORITY subsystem is initialized\n");
	return ;
}

/*
 * IPC_PTHREAD_PRIORITY Resource Manager Routines.
 */


/*
 * Routine: ipc_pthread_priority_release_value
 * Purpose: Release a value, if sync matches the sync count in value.
 * Returns: KERN_SUCCESS: on Successful deletion.
 *          KERN_FAILURE: if sync value does not matches.
 */
kern_return_t
ipc_pthread_priority_release_value(
	ipc_voucher_attr_manager_t		__assert_only manager,
	mach_voucher_attr_key_t			__assert_only key,
	mach_voucher_attr_value_handle_t		      value,
	mach_voucher_attr_value_reference_t		      sync)
{
	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
	assert(manager == &ipc_pthread_priority_manager);

	ipc_pthread_priority_value_t ipc_pthread_priority_value = HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(value);

	panic("ipc_pthread_priority_release_value called for a persistent PTHPRIORITY value %x with sync value %d\n", ipc_pthread_priority_value, sync);
	return KERN_FAILURE;
}

/*
 * Routine: ipc_pthread_priority_get_value
 */
kern_return_t
ipc_pthread_priority_get_value(
	ipc_voucher_attr_manager_t 		__assert_only manager,
	mach_voucher_attr_key_t 		__assert_only key,
	mach_voucher_attr_recipe_command_t 	          command,
	mach_voucher_attr_value_handle_array_t __unused	  prev_values,
	mach_msg_type_number_t 		       __unused   prev_value_count,
	mach_voucher_attr_content_t          		  recipe,
	mach_voucher_attr_content_size_t     		  recipe_size,
	mach_voucher_attr_value_handle_t             *out_value,
	mach_voucher_attr_value_flags_t              *out_flags,
	ipc_voucher_t 				                 *out_value_voucher)
{
	kern_return_t kr = KERN_SUCCESS;
	ipc_pthread_priority_value_t ipc_pthread_priority_value;
	ipc_pthread_priority_value_t canonicalize_priority_value;

	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
	assert(manager == &ipc_pthread_priority_manager);

	/* never an out voucher */
	*out_value_voucher = IPC_VOUCHER_NULL;
	*out_flags = MACH_VOUCHER_ATTR_VALUE_FLAGS_NONE;

	switch (command) {

	case MACH_VOUCHER_ATTR_PTHPRIORITY_CREATE:

		if (recipe_size != sizeof(ipc_pthread_priority_value_t)) {
			return KERN_INVALID_ARGUMENT;
		}

		memcpy(&ipc_pthread_priority_value, recipe, recipe_size);

		if (ipc_pthread_priority_value == PTHPRIORITY_ATTR_DEFAULT_VALUE) {
			*out_value = IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(PTHPRIORITY_ATTR_DEFAULT_VALUE);
			return kr;
		}

		/* Callout to pthread kext to get the canonicalized value */
		canonicalize_priority_value = (ipc_pthread_priority_value_t)
				_pthread_priority_normalize_for_ipc((unsigned long)ipc_pthread_priority_value);

		*out_value = IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(canonicalize_priority_value);
		*out_flags = MACH_VOUCHER_ATTR_VALUE_FLAGS_PERSIST;
		return kr;

	default:
		kr = KERN_INVALID_ARGUMENT;
		break;
	}

	return kr;
}

/*
 * Routine: ipc_pthread_priority_extract_content
 * Purpose: Extract a set of pthread_priority value from an array of voucher values.
 * Returns: KERN_SUCCESS: on Success.
 *          KERN_NO_SPACE: insufficeint buffer provided to fill an array of pthread_priority values.
 */
kern_return_t
ipc_pthread_priority_extract_content(
	ipc_voucher_attr_manager_t      __assert_only manager,
	mach_voucher_attr_key_t         __assert_only key,
	mach_voucher_attr_value_handle_array_t        values,
	mach_msg_type_number_t 			              value_count,
	mach_voucher_attr_recipe_command_t           *out_command,
	mach_voucher_attr_content_t                   out_recipe,
	mach_voucher_attr_content_size_t             *in_out_recipe_size)
{
	kern_return_t kr = KERN_SUCCESS;
	mach_msg_type_number_t i;
	ipc_pthread_priority_value_t ipc_pthread_priority_value;

	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
	assert(manager == &ipc_pthread_priority_manager);

	for (i = 0; i < value_count; i++) {
		ipc_pthread_priority_value = HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(values[i]);

		if (ipc_pthread_priority_value == PTHPRIORITY_ATTR_DEFAULT_VALUE) {
			continue;
		}

		if (MACH_VOUCHER_PTHPRIORITY_CONTENT_SIZE > *in_out_recipe_size) {
			*in_out_recipe_size = 0;
			return KERN_NO_SPACE;
		}

		memcpy(&out_recipe[0], &ipc_pthread_priority_value, sizeof(ipc_pthread_priority_value));
		*out_command = MACH_VOUCHER_ATTR_PTHPRIORITY_NULL;
		*in_out_recipe_size = (mach_voucher_attr_content_size_t)sizeof(ipc_pthread_priority_value);
		return kr;
	}

	*in_out_recipe_size = 0;
	return KERN_INVALID_VALUE;
}

/*
 * Routine: ipc_pthread_priority_command
 * Purpose: Execute a command against a set of PTHPRIORITY values.
 * Returns: KERN_SUCCESS: On successful execution of command.
 *          KERN_FAILURE: On failure.
 */
kern_return_t
ipc_pthread_priority_command(
	ipc_voucher_attr_manager_t 		   __assert_only manager,
	mach_voucher_attr_key_t 		   __assert_only key,
	mach_voucher_attr_value_handle_array_t 	__unused values,
	mach_msg_type_number_t 			__unused value_count,
	mach_voucher_attr_command_t		 __unused command,
	mach_voucher_attr_content_t 	   __unused in_content,
	mach_voucher_attr_content_size_t   __unused in_content_size,
	mach_voucher_attr_content_t 	   __unused out_content,
	mach_voucher_attr_content_size_t   __unused *out_content_size)
{
	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
	assert(manager == &ipc_pthread_priority_manager);

	return KERN_FAILURE;
}

void
ipc_pthread_priority_release(
	ipc_voucher_attr_manager_t 		__assert_only manager)
{
	assert(manager == &ipc_pthread_priority_manager);
}
Commit	Line	Data
39037602 A	1	/*
	2	* Copyright (c) 2012-2016 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#include <voucher/ipc_pthread_priority_types.h>
	30	#include <voucher/ipc_pthread_priority_internal.h>
	31	#include <mach/mach_types.h>
	32	#include <mach/kern_return.h>
	33	#include <ipc/ipc_port.h>
	34	#include <mach/mach_vm.h>
	35	#include <mach/vm_map.h>
	36	#include <vm/vm_map.h>
	37	#include <mach/host_priv.h>
	38	#include <mach/host_special_ports.h>
	39	#include <kern/host.h>
	40	#include <kern/kalloc.h>
	41	#include <kern/ledger.h>
	42	#include <sys/kdebug.h>
	43	#include <IOKit/IOBSD.h>
	44	#include <mach/mach_voucher_attr_control.h>
d9a64523	45	#include <pthread/priority_private.h>
39037602 A	46
	47	ipc_voucher_attr_control_t ipc_pthread_priority_voucher_attr_control; /* communication channel from PTHPRIORITY to voucher system */
	48
	49	#define IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(x) ((mach_voucher_attr_value_handle_t)(x))
	50	#define HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(x) ((ipc_pthread_priority_value_t)(x))
	51
39037602 A	52	kern_return_t
	53	ipc_pthread_priority_release_value(
	54	ipc_voucher_attr_manager_t __assert_only manager,
	55	mach_voucher_attr_key_t __assert_only key,
	56	mach_voucher_attr_value_handle_t value,
	57	mach_voucher_attr_value_reference_t sync);
	58
	59	kern_return_t
	60	ipc_pthread_priority_get_value(
	61	ipc_voucher_attr_manager_t __assert_only manager,
	62	mach_voucher_attr_key_t __assert_only key,
	63	mach_voucher_attr_recipe_command_t command,
	64	mach_voucher_attr_value_handle_array_t prev_values,
	65	mach_msg_type_number_t __assert_only prev_value_count,
	66	mach_voucher_attr_content_t recipe,
	67	mach_voucher_attr_content_size_t recipe_size,
	68	mach_voucher_attr_value_handle_t *out_value,
	69	mach_voucher_attr_value_flags_t *out_flags,
	70	ipc_voucher_t *out_value_voucher);
	71
	72	kern_return_t
	73	ipc_pthread_priority_extract_content(
	74	ipc_voucher_attr_manager_t __assert_only manager,
	75	mach_voucher_attr_key_t __assert_only key,
	76	mach_voucher_attr_value_handle_array_t values,
	77	mach_msg_type_number_t value_count,
	78	mach_voucher_attr_recipe_command_t *out_command,
	79	mach_voucher_attr_content_t out_recipe,
	80	mach_voucher_attr_content_size_t *in_out_recipe_size);
	81
	82	kern_return_t
	83	ipc_pthread_priority_command(
	84	ipc_voucher_attr_manager_t __assert_only manager,
	85	mach_voucher_attr_key_t __assert_only key,
	86	mach_voucher_attr_value_handle_array_t values,
	87	mach_msg_type_number_t value_count,
	88	mach_voucher_attr_command_t command,
	89	mach_voucher_attr_content_t in_content,
	90	mach_voucher_attr_content_size_t in_content_size,
	91	mach_voucher_attr_content_t out_content,
	92	mach_voucher_attr_content_size_t *in_out_content_size);
	93
	94	void
	95	ipc_pthread_priority_release(ipc_voucher_attr_manager_t __assert_only manager);
	96
	97	/*
	98	* communication channel from voucher system to IPC_PTHREAD_PRIORITY
	99	*/
	100	struct ipc_voucher_attr_manager ipc_pthread_priority_manager = {
	101	.ivam_release_value = ipc_pthread_priority_release_value,
	102	.ivam_get_value = ipc_pthread_priority_get_value,
	103	.ivam_extract_content = ipc_pthread_priority_extract_content,
	104	.ivam_command = ipc_pthread_priority_command,
	105	.ivam_release = ipc_pthread_priority_release,
	106	.ivam_flags = IVAM_FLAGS_NONE,
	107	};
	108
	109	/*
	110	* Routine: ipc_pthread_priority_init
	111	* Purpose: Initialize the IPC_PTHREAD_PRIORITY subsystem.
	112	* Returns: None.
	113	*/
	114	void
	115	ipc_pthread_priority_init()
116	{
117	kern_return_t kr = KERN_SUCCESS;
118
119	/* Register the ipc_pthread_priority manager with the Vouchers sub system. */
120	kr = ipc_register_well_known_mach_voucher_attr_manager(
121	&ipc_pthread_priority_manager,
122	0,
123	MACH_VOUCHER_ATTR_KEY_PTHPRIORITY,
124	&ipc_pthread_priority_voucher_attr_control);
125	if (kr != KERN_SUCCESS )
126	panic("IPC_PTHREAD_PRIORITY subsystem initialization failed");
127
128	kprintf("IPC_PTHREAD_PRIORITY subsystem is initialized\n");
129	return ;
130	}
131
132	/*
133	* IPC_PTHREAD_PRIORITY Resource Manager Routines.
134	*/
135
136
137	/*
138	* Routine: ipc_pthread_priority_release_value
139	* Purpose: Release a value, if sync matches the sync count in value.
140	* Returns: KERN_SUCCESS: on Successful deletion.
141	* KERN_FAILURE: if sync value does not matches.
142	*/
143	kern_return_t
144	ipc_pthread_priority_release_value(
145	ipc_voucher_attr_manager_t __assert_only manager,
146	mach_voucher_attr_key_t __assert_only key,
147	mach_voucher_attr_value_handle_t value,
148	mach_voucher_attr_value_reference_t sync)
149	{
150	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
151	assert(manager == &ipc_pthread_priority_manager);
152
153	ipc_pthread_priority_value_t ipc_pthread_priority_value = HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(value);
154
155	panic("ipc_pthread_priority_release_value called for a persistent PTHPRIORITY value %x with sync value %d\n", ipc_pthread_priority_value, sync);
156	return KERN_FAILURE;
157	}
158
159	/*
160	* Routine: ipc_pthread_priority_get_value
161	*/
162	kern_return_t
163	ipc_pthread_priority_get_value(
164	ipc_voucher_attr_manager_t __assert_only manager,
165	mach_voucher_attr_key_t __assert_only key,
166	mach_voucher_attr_recipe_command_t command,
167	mach_voucher_attr_value_handle_array_t __unused prev_values,
168	mach_msg_type_number_t __unused prev_value_count,
169	mach_voucher_attr_content_t recipe,
170	mach_voucher_attr_content_size_t recipe_size,
171	mach_voucher_attr_value_handle_t *out_value,
172	mach_voucher_attr_value_flags_t *out_flags,
173	ipc_voucher_t *out_value_voucher)
174	{
175	kern_return_t kr = KERN_SUCCESS;
176	ipc_pthread_priority_value_t ipc_pthread_priority_value;
177	ipc_pthread_priority_value_t canonicalize_priority_value;
178
179	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
180	assert(manager == &ipc_pthread_priority_manager);
181
182	/* never an out voucher */
183	*out_value_voucher = IPC_VOUCHER_NULL;
184	*out_flags = MACH_VOUCHER_ATTR_VALUE_FLAGS_NONE;
185
186	switch (command) {
187
188	case MACH_VOUCHER_ATTR_PTHPRIORITY_CREATE:
189
190	if (recipe_size != sizeof(ipc_pthread_priority_value_t)) {
191	return KERN_INVALID_ARGUMENT;
192	}
193
194	memcpy(&ipc_pthread_priority_value, recipe, recipe_size);
195
196	if (ipc_pthread_priority_value == PTHPRIORITY_ATTR_DEFAULT_VALUE) {
197	*out_value = IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(PTHPRIORITY_ATTR_DEFAULT_VALUE);
198	return kr;
199	}
200
201	/* Callout to pthread kext to get the canonicalized value */
d9a64523 A	202	canonicalize_priority_value = (ipc_pthread_priority_value_t)
d9a64523 A	203	_pthread_priority_normalize_for_ipc((unsigned long)ipc_pthread_priority_value);
39037602 A	204
	205	*out_value = IPC_PTHREAD_PRIORITY_VALUE_TO_HANDLE(canonicalize_priority_value);
	206	*out_flags = MACH_VOUCHER_ATTR_VALUE_FLAGS_PERSIST;
	207	return kr;
	208
	209	default:
	210	kr = KERN_INVALID_ARGUMENT;
	211	break;
	212	}
	213
	214	return kr;
	215	}
	216
	217	/*
	218	* Routine: ipc_pthread_priority_extract_content
	219	* Purpose: Extract a set of pthread_priority value from an array of voucher values.
	220	* Returns: KERN_SUCCESS: on Success.
	221	* KERN_NO_SPACE: insufficeint buffer provided to fill an array of pthread_priority values.
	222	*/
	223	kern_return_t
	224	ipc_pthread_priority_extract_content(
	225	ipc_voucher_attr_manager_t __assert_only manager,
	226	mach_voucher_attr_key_t __assert_only key,
	227	mach_voucher_attr_value_handle_array_t values,
	228	mach_msg_type_number_t value_count,
	229	mach_voucher_attr_recipe_command_t *out_command,
	230	mach_voucher_attr_content_t out_recipe,
	231	mach_voucher_attr_content_size_t *in_out_recipe_size)
	232	{
	233	kern_return_t kr = KERN_SUCCESS;
	234	mach_msg_type_number_t i;
	235	ipc_pthread_priority_value_t ipc_pthread_priority_value;
	236
	237	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
	238	assert(manager == &ipc_pthread_priority_manager);
	239
	240	for (i = 0; i < value_count; i++) {
	241	ipc_pthread_priority_value = HANDLE_TO_IPC_PTHREAD_PRIORITY_VALUE(values[i]);
	242
	243	if (ipc_pthread_priority_value == PTHPRIORITY_ATTR_DEFAULT_VALUE) {
	244	continue;
	245	}
	246
	247	if (MACH_VOUCHER_PTHPRIORITY_CONTENT_SIZE > *in_out_recipe_size) {
	248	*in_out_recipe_size = 0;
	249	return KERN_NO_SPACE;
	250	}
	251
	252	memcpy(&out_recipe[0], &ipc_pthread_priority_value, sizeof(ipc_pthread_priority_value));
	253	*out_command = MACH_VOUCHER_ATTR_PTHPRIORITY_NULL;
	254	*in_out_recipe_size = (mach_voucher_attr_content_size_t)sizeof(ipc_pthread_priority_value);
	255	return kr;
	256	}
	257
	258	*in_out_recipe_size = 0;
	259	return KERN_INVALID_VALUE;
	260	}
	261
	262	/*
	263	* Routine: ipc_pthread_priority_command
	264	* Purpose: Execute a command against a set of PTHPRIORITY values.
	265	* Returns: KERN_SUCCESS: On successful execution of command.
	266	* KERN_FAILURE: On failure.
	267	*/
268	kern_return_t
269	ipc_pthread_priority_command(
270	ipc_voucher_attr_manager_t __assert_only manager,
271	mach_voucher_attr_key_t __assert_only key,
272	mach_voucher_attr_value_handle_array_t __unused values,
273	mach_msg_type_number_t __unused value_count,
274	mach_voucher_attr_command_t __unused command,
275	mach_voucher_attr_content_t __unused in_content,
276	mach_voucher_attr_content_size_t __unused in_content_size,
277	mach_voucher_attr_content_t __unused out_content,
278	mach_voucher_attr_content_size_t __unused *out_content_size)
279	{
280	assert(MACH_VOUCHER_ATTR_KEY_PTHPRIORITY == key);
281	assert(manager == &ipc_pthread_priority_manager);
282
283	return KERN_FAILURE;
284	}
285
286	void
287	ipc_pthread_priority_release(
288	ipc_voucher_attr_manager_t __assert_only manager)
289	{
290	assert(manager == &ipc_pthread_priority_manager);
291	}