[apple/xnu.git] / osfmk / ipc / mach_debug.c

/*
 * Copyright (c) 2000-2004 Apple Computer, 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@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 */
/*
 *	File:	ipc/mach_debug.c
 *	Author:	Rich Draves
 *	Date:	1989
 *
 *	Exported IPC debug calls.
 */
#include <mach_ipc_debug.h>

#include <mach/vm_param.h>
#include <mach/kern_return.h>
#include <mach/machine/vm_types.h>
#include <mach/mach_host_server.h>
#include <mach/mach_port_server.h>
#include <mach_debug/ipc_info.h>
#include <mach_debug/hash_info.h>

#if MACH_IPC_DEBUG
#include <kern/host.h>
#include <kern/misc_protos.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <ipc/port.h>
#include <ipc/ipc_types.h>
#include <ipc/ipc_space.h>
#include <ipc/ipc_port.h>
#include <ipc/ipc_hash.h>
#include <ipc/ipc_table.h>
#include <ipc/ipc_right.h>
#endif

/*
 *	Routine:	mach_port_get_srights [kernel call]
 *	Purpose:
 *		Retrieve the number of extant send rights
 *		that a receive right has.
 *	Conditions:
 *		Nothing locked.
 *	Returns:
 *		KERN_SUCCESS		Retrieved number of send rights.
 *		KERN_INVALID_TASK	The space is null.
 *		KERN_INVALID_TASK	The space is dead.
 *		KERN_INVALID_NAME	The name doesn't denote a right.
 *		KERN_INVALID_RIGHT	Name doesn't denote receive rights.
 */

#if !MACH_IPC_DEBUG
kern_return_t
mach_port_get_srights(
	__unused ipc_space_t		space,
	__unused mach_port_name_t	name,
	__unused mach_port_rights_t	*srightsp)
{
        return KERN_FAILURE;
}
#else
kern_return_t
mach_port_get_srights(
	ipc_space_t		space,
	mach_port_name_t	name,
	mach_port_rights_t	*srightsp)
{
	ipc_port_t port;
	kern_return_t kr;
	mach_port_rights_t srights;

	if (space == IS_NULL)
		return KERN_INVALID_TASK;

	kr = ipc_port_translate_receive(space, name, &port);
	if (kr != KERN_SUCCESS)
		return kr;
	/* port is locked and active */

	srights = port->ip_srights;
	ip_unlock(port);

	*srightsp = srights;
	return KERN_SUCCESS;
}
#endif /* MACH_IPC_DEBUG */


/*
 *	Routine:	mach_port_space_info
 *	Purpose:
 *		Returns information about an IPC space.
 *	Conditions:
 *		Nothing locked.  Obeys CountInOut protocol.
 *	Returns:
 *		KERN_SUCCESS		Returned information.
 *		KERN_INVALID_TASK	The space is null.
 *		KERN_INVALID_TASK	The space is dead.
 *		KERN_RESOURCE_SHORTAGE	Couldn't allocate memory.
 */

#if !MACH_IPC_DEBUG
kern_return_t
mach_port_space_info(
	__unused ipc_space_t			space,
	__unused ipc_info_space_t		*infop,
	__unused ipc_info_name_array_t	*tablep,
	__unused mach_msg_type_number_t 	*tableCntp,
	__unused ipc_info_tree_name_array_t *treep,
	__unused mach_msg_type_number_t 	*treeCntp)
{
        return KERN_FAILURE;
}
#else
kern_return_t
mach_port_space_info(
	ipc_space_t			space,
	ipc_info_space_t		*infop,
	ipc_info_name_array_t		*tablep,
	mach_msg_type_number_t 		*tableCntp,
	__unused ipc_info_tree_name_array_t	*treep,
	__unused mach_msg_type_number_t         *treeCntp)
{
	ipc_info_name_t *table_info;
	vm_offset_t table_addr;
	vm_size_t table_size, table_size_needed;
	ipc_entry_t table;
	ipc_entry_num_t tsize;
	mach_port_index_t index;
	kern_return_t kr;
	vm_map_copy_t copy;


	if (space == IS_NULL)
		return KERN_INVALID_TASK;

	/* start with in-line memory */

	table_size = 0;

	for (;;) {
		is_read_lock(space);
		if (!is_active(space)) {
			is_read_unlock(space);
			if (table_size != 0)
				kmem_free(ipc_kernel_map,
					  table_addr, table_size);
			return KERN_INVALID_TASK;
		}

		table_size_needed = round_page(space->is_table_size
					       * sizeof(ipc_info_name_t));

		if (table_size_needed == table_size)
			break;

		is_read_unlock(space);

		if (table_size != table_size_needed) {
			if (table_size != 0)
				kmem_free(ipc_kernel_map, table_addr, table_size);
			kr = kmem_alloc(ipc_kernel_map,	&table_addr, table_size_needed);
			if (kr != KERN_SUCCESS) {
				return KERN_RESOURCE_SHORTAGE;
			}
			table_size = table_size_needed;
		}

	}
	/* space is read-locked and active; we have enough wired memory */

	/* get the overall space info */
	infop->iis_genno_mask = MACH_PORT_NGEN(MACH_PORT_DEAD);
	infop->iis_table_size = space->is_table_size;
	infop->iis_table_next = space->is_table_next->its_size;

	/* walk the table for this space */
	table = space->is_table;
	tsize = space->is_table_size;
	table_info = (ipc_info_name_array_t)table_addr;
	for (index = 0; index < tsize; index++) {
		ipc_info_name_t *iin = &table_info[index];
		ipc_entry_t entry = &table[index];
		ipc_entry_bits_t bits;

		bits = entry->ie_bits;
		iin->iin_name = MACH_PORT_MAKE(index, IE_BITS_GEN(bits));
		iin->iin_type = IE_BITS_TYPE(bits);
		if ((entry->ie_bits & MACH_PORT_TYPE_PORT_RIGHTS) != MACH_PORT_TYPE_NONE &&
		    entry->ie_request != IE_REQ_NONE) {
			ipc_port_t port = (ipc_port_t) entry->ie_object;

			assert(IP_VALID(port));
			ip_lock(port);
			iin->iin_type |= ipc_port_request_type(port, iin->iin_name, entry->ie_request);
			ip_unlock(port);
		}

		iin->iin_urefs = IE_BITS_UREFS(bits);
		iin->iin_object = (natural_t)(uintptr_t)entry->ie_object;
		iin->iin_next = entry->ie_next;
		iin->iin_hash = entry->ie_index;
	}

	is_read_unlock(space);

	/* prepare the table out-of-line data for return */
	if (table_size > 0) {
		if (table_size > infop->iis_table_size * sizeof(ipc_info_name_t))
			bzero((char *)&table_info[infop->iis_table_size],
			      table_size - infop->iis_table_size * sizeof(ipc_info_name_t));

		kr = vm_map_unwire(ipc_kernel_map, vm_map_trunc_page(table_addr),
				   vm_map_round_page(table_addr + table_size), FALSE);
		assert(kr == KERN_SUCCESS);
		kr = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)table_addr, 
				   (vm_map_size_t)table_size, TRUE, &copy);
		assert(kr == KERN_SUCCESS);
		*tablep = (ipc_info_name_t *)copy;
		*tableCntp = infop->iis_table_size;
	} else {
		*tablep = (ipc_info_name_t *)0;
		*tableCntp = 0;
	}

	/* splay tree is obsolete, no work to do... */
	*treep = (ipc_info_tree_name_t *)0;
	*treeCntp = 0;
	return KERN_SUCCESS;
}
#endif /* MACH_IPC_DEBUG */

/*
 *	Routine:	mach_port_dnrequest_info
 *	Purpose:
 *		Returns information about the dead-name requests
 *		registered with the named receive right.
 *	Conditions:
 *		Nothing locked.
 *	Returns:
 *		KERN_SUCCESS		Retrieved information.
 *		KERN_INVALID_TASK	The space is null.
 *		KERN_INVALID_TASK	The space is dead.
 *		KERN_INVALID_NAME	The name doesn't denote a right.
 *		KERN_INVALID_RIGHT	Name doesn't denote receive rights.
 */

#if !MACH_IPC_DEBUG
kern_return_t
mach_port_dnrequest_info(
	__unused ipc_space_t		space,
	__unused mach_port_name_t	name,
	__unused unsigned int	*totalp,
	__unused unsigned int	*usedp)
{
        return KERN_FAILURE;
}
#else
kern_return_t
mach_port_dnrequest_info(
	ipc_space_t			space,
	mach_port_name_t		name,
	unsigned int			*totalp,
	unsigned int			*usedp)
{
	unsigned int total, used;
	ipc_port_t port;
	kern_return_t kr;

	if (space == IS_NULL)
		return KERN_INVALID_TASK;

	kr = ipc_port_translate_receive(space, name, &port);
	if (kr != KERN_SUCCESS)
		return kr;
	/* port is locked and active */

	if (port->ip_requests == IPR_NULL) {
		total = 0;
		used = 0;
	} else {
		ipc_port_request_t requests = port->ip_requests;
		ipc_port_request_index_t index;

		total = requests->ipr_size->its_size;

		for (index = 1, used = 0;
		     index < total; index++) {
			ipc_port_request_t ipr = &requests[index];

			if (ipr->ipr_name != MACH_PORT_NULL)
				used++;
		}
	}
	ip_unlock(port);

	*totalp = total;
	*usedp = used;
	return KERN_SUCCESS;
}
#endif /* MACH_IPC_DEBUG */

/*
 *	Routine:	mach_port_kobject [kernel call]
 *	Purpose:
 *		Retrieve the type and address of the kernel object
 *		represented by a send or receive right. Returns
 *		the kernel address in a mach_vm_address_t to
 *		mask potential differences in kernel address space
 *		size.
 *	Conditions:
 *		Nothing locked.
 *	Returns:
 *		KERN_SUCCESS		Retrieved kernel object info.
 *		KERN_INVALID_TASK	The space is null.
 *		KERN_INVALID_TASK	The space is dead.
 *		KERN_INVALID_NAME	The name doesn't denote a right.
 *		KERN_INVALID_RIGHT	Name doesn't denote
 *					send or receive rights.
 */

#if !MACH_IPC_DEBUG
kern_return_t
mach_port_kobject(
	__unused ipc_space_t		space,
	__unused mach_port_name_t	name,
	__unused natural_t		*typep,
	__unused mach_vm_address_t	*addrp)
{
        return KERN_FAILURE;
}
#else
kern_return_t
mach_port_kobject(
	ipc_space_t			space,
	mach_port_name_t		name,
	natural_t			*typep,
	mach_vm_address_t		*addrp)
{
	ipc_entry_t entry;
	ipc_port_t port;
	kern_return_t kr;
	mach_vm_address_t kaddr;

	if (space == IS_NULL)
		return KERN_INVALID_TASK;

	kr = ipc_right_lookup_read(space, name, &entry);
	if (kr != KERN_SUCCESS)
		return kr;
	/* space is read-locked and active */

	if ((entry->ie_bits & MACH_PORT_TYPE_SEND_RECEIVE) == 0) {
		is_read_unlock(space);
		return KERN_INVALID_RIGHT;
	}

	port = (ipc_port_t) entry->ie_object;
	assert(port != IP_NULL);

	ip_lock(port);
	is_read_unlock(space);

	if (!ip_active(port)) {
		ip_unlock(port);
		return KERN_INVALID_RIGHT;
	}

	*typep = (unsigned int) ip_kotype(port);
	kaddr = (mach_vm_address_t)port->ip_kobject;
	ip_unlock(port);

	if (0 != kaddr && is_ipc_kobject(*typep))
		*addrp = VM_KERNEL_ADDRPERM(VM_KERNEL_UNSLIDE(kaddr));
	else
		*addrp = 0;

	return KERN_SUCCESS;
}
#endif /* MACH_IPC_DEBUG */
/*
 *	Routine:	mach_port_kernel_object [Legacy kernel call]
 *	Purpose:
 *		Retrieve the type and address of the kernel object
 *		represented by a send or receive right. Hard-coded
 *		to return only the low-order 32-bits of the kernel
 *		object.
 *	Conditions:
 *		Nothing locked.
 *	Returns:
 *		KERN_SUCCESS		Retrieved kernel object info.
 *		KERN_INVALID_TASK	The space is null.
 *		KERN_INVALID_TASK	The space is dead.
 *		KERN_INVALID_NAME	The name doesn't denote a right.
 *		KERN_INVALID_RIGHT	Name doesn't denote
 *					send or receive rights.
 */

#if !MACH_IPC_DEBUG
kern_return_t
mach_port_kernel_object(
	__unused ipc_space_t		space,
	__unused mach_port_name_t	name,
	__unused unsigned int		*typep,
	__unused unsigned int		*addrp)
{
        return KERN_FAILURE;
}
#else
kern_return_t
mach_port_kernel_object(
	ipc_space_t			space,
	mach_port_name_t		name,
	unsigned int			*typep,
	unsigned int			*addrp)
{
	mach_vm_address_t addr = 0;
	kern_return_t kr;

	kr = mach_port_kobject(space, name, typep, &addr);
	*addrp = (unsigned int) addr;
	return kr;
}
#endif /* MACH_IPC_DEBUG */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56	/*
	57	*/
	58	/*
	59	* File: ipc/mach_debug.c
	60	* Author: Rich Draves
	61	* Date: 1989
	62	*
	63	* Exported IPC debug calls.
	64	*/
	65	#include <mach_ipc_debug.h>
	66
	67	#include <mach/vm_param.h>
	68	#include <mach/kern_return.h>
	69	#include <mach/machine/vm_types.h>
	70	#include <mach/mach_host_server.h>
	71	#include <mach/mach_port_server.h>
	72	#include <mach_debug/ipc_info.h>
	73	#include <mach_debug/hash_info.h>
	74
	75	#if MACH_IPC_DEBUG
	76	#include <kern/host.h>
	77	#include <kern/misc_protos.h>
	78	#include <vm/vm_map.h>
	79	#include <vm/vm_kern.h>
91447636 A	80	#include <ipc/port.h>
91447636 A	81	#include <ipc/ipc_types.h>
1c79356b A	82	#include <ipc/ipc_space.h>
	83	#include <ipc/ipc_port.h>
	84	#include <ipc/ipc_hash.h>
	85	#include <ipc/ipc_table.h>
	86	#include <ipc/ipc_right.h>
	87	#endif
	88
	89	/*
	90	* Routine: mach_port_get_srights [kernel call]
	91	* Purpose:
	92	* Retrieve the number of extant send rights
	93	* that a receive right has.
	94	* Conditions:
	95	* Nothing locked.
	96	* Returns:
	97	* KERN_SUCCESS Retrieved number of send rights.
	98	* KERN_INVALID_TASK The space is null.
	99	* KERN_INVALID_TASK The space is dead.
	100	* KERN_INVALID_NAME The name doesn't denote a right.
	101	* KERN_INVALID_RIGHT Name doesn't denote receive rights.
	102	*/
	103
91447636 A	104	#if !MACH_IPC_DEBUG
	105	kern_return_t
	106	mach_port_get_srights(
	107	__unused ipc_space_t space,
	108	__unused mach_port_name_t name,
	109	__unused mach_port_rights_t *srightsp)
	110	{
	111	return KERN_FAILURE;
	112	}
	113	#else
1c79356b A	114	kern_return_t
	115	mach_port_get_srights(
	116	ipc_space_t space,
	117	mach_port_name_t name,
	118	mach_port_rights_t *srightsp)
	119	{
1c79356b A	120	ipc_port_t port;
	121	kern_return_t kr;
	122	mach_port_rights_t srights;
	123
	124	if (space == IS_NULL)
	125	return KERN_INVALID_TASK;
	126
	127	kr = ipc_port_translate_receive(space, name, &port);
	128	if (kr != KERN_SUCCESS)
	129	return kr;
	130	/* port is locked and active */
	131
	132	srights = port->ip_srights;
	133	ip_unlock(port);
	134
	135	*srightsp = srights;
	136	return KERN_SUCCESS;
1c79356b	137	}
91447636	138	#endif /* MACH_IPC_DEBUG */
1c79356b	139
1c79356b A	140
	141	/*
	142	* Routine: mach_port_space_info
	143	* Purpose:
	144	* Returns information about an IPC space.
	145	* Conditions:
	146	* Nothing locked. Obeys CountInOut protocol.
	147	* Returns:
	148	* KERN_SUCCESS Returned information.
	149	* KERN_INVALID_TASK The space is null.
	150	* KERN_INVALID_TASK The space is dead.
	151	* KERN_RESOURCE_SHORTAGE Couldn't allocate memory.
	152	*/
	153
91447636	154	#if !MACH_IPC_DEBUG
1c79356b A	155	kern_return_t
1c79356b A	156	mach_port_space_info(
91447636 A	157	__unused ipc_space_t space,
	158	__unused ipc_info_space_t *infop,
	159	__unused ipc_info_name_array_t *tablep,
	160	__unused mach_msg_type_number_t *tableCntp,
	161	__unused ipc_info_tree_name_array_t *treep,
	162	__unused mach_msg_type_number_t *treeCntp)
	163	{
	164	return KERN_FAILURE;
	165	}
	166	#else
	167	kern_return_t
	168	mach_port_space_info(
2d21ac55 A	169	ipc_space_t space,
2d21ac55 A	170	ipc_info_space_t *infop,
1c79356b A	171	ipc_info_name_array_t *tablep,
1c79356b A	172	mach_msg_type_number_t *tableCntp,
316670eb A	173	__unused ipc_info_tree_name_array_t *treep,
316670eb A	174	__unused mach_msg_type_number_t *treeCntp)
1c79356b	175	{
1c79356b	176	ipc_info_name_t *table_info;
1c79356b	177	vm_offset_t table_addr;
2d21ac55	178	vm_size_t table_size, table_size_needed;
1c79356b A	179	ipc_entry_t table;
	180	ipc_entry_num_t tsize;
	181	mach_port_index_t index;
	182	kern_return_t kr;
2d21ac55 A	183	vm_map_copy_t copy;
2d21ac55 A	184
1c79356b A	185
	186	if (space == IS_NULL)
	187	return KERN_INVALID_TASK;
	188
	189	/* start with in-line memory */
	190
91447636	191	table_size = 0;
1c79356b A	192
	193	for (;;) {
	194	is_read_lock(space);
316670eb	195	if (!is_active(space)) {
1c79356b	196	is_read_unlock(space);
2d21ac55	197	if (table_size != 0)
1c79356b A	198	kmem_free(ipc_kernel_map,
1c79356b A	199	table_addr, table_size);
1c79356b A	200	return KERN_INVALID_TASK;
	201	}
	202
2d21ac55 A	203	table_size_needed = round_page(space->is_table_size
2d21ac55 A	204	* sizeof(ipc_info_name_t));
1c79356b	205
316670eb	206	if (table_size_needed == table_size)
1c79356b A	207	break;
	208
	209	is_read_unlock(space);
	210
2d21ac55 A	211	if (table_size != table_size_needed) {
	212	if (table_size != 0)
	213	kmem_free(ipc_kernel_map, table_addr, table_size);
	214	kr = kmem_alloc(ipc_kernel_map, &table_addr, table_size_needed);
1c79356b	215	if (kr != KERN_SUCCESS) {
1c79356b A	216	return KERN_RESOURCE_SHORTAGE;
1c79356b A	217	}
2d21ac55	218	table_size = table_size_needed;
1c79356b	219	}
316670eb	220
1c79356b A	221	}
	222	/* space is read-locked and active; we have enough wired memory */
	223
2d21ac55	224	/* get the overall space info */
1c79356b A	225	infop->iis_genno_mask = MACH_PORT_NGEN(MACH_PORT_DEAD);
	226	infop->iis_table_size = space->is_table_size;
	227	infop->iis_table_next = space->is_table_next->its_size;
1c79356b	228
2d21ac55	229	/* walk the table for this space */
1c79356b A	230	table = space->is_table;
1c79356b A	231	tsize = space->is_table_size;
2d21ac55	232	table_info = (ipc_info_name_array_t)table_addr;
1c79356b A	233	for (index = 0; index < tsize; index++) {
	234	ipc_info_name_t *iin = &table_info[index];
	235	ipc_entry_t entry = &table[index];
	236	ipc_entry_bits_t bits;
	237
	238	bits = entry->ie_bits;
	239	iin->iin_name = MACH_PORT_MAKE(index, IE_BITS_GEN(bits));
1c79356b	240	iin->iin_type = IE_BITS_TYPE(bits);
6d2010ae A	241	if ((entry->ie_bits & MACH_PORT_TYPE_PORT_RIGHTS) != MACH_PORT_TYPE_NONE &&
	242	entry->ie_request != IE_REQ_NONE) {
	243	ipc_port_t port = (ipc_port_t) entry->ie_object;
	244
	245	assert(IP_VALID(port));
	246	ip_lock(port);
	247	iin->iin_type \|= ipc_port_request_type(port, iin->iin_name, entry->ie_request);
	248	ip_unlock(port);
	249	}
	250
1c79356b	251	iin->iin_urefs = IE_BITS_UREFS(bits);
b0d623f7	252	iin->iin_object = (natural_t)(uintptr_t)entry->ie_object;
1c79356b A	253	iin->iin_next = entry->ie_next;
	254	iin->iin_hash = entry->ie_index;
	255	}
	256
1c79356b A	257	is_read_unlock(space);
1c79356b A	258
2d21ac55 A	259	/* prepare the table out-of-line data for return */
	260	if (table_size > 0) {
	261	if (table_size > infop->iis_table_size * sizeof(ipc_info_name_t))
	262	bzero((char *)&table_info[infop->iis_table_size],
	263	table_size - infop->iis_table_size * sizeof(ipc_info_name_t));
1c79356b	264
91447636	265	kr = vm_map_unwire(ipc_kernel_map, vm_map_trunc_page(table_addr),
2d21ac55	266	vm_map_round_page(table_addr + table_size), FALSE);
1c79356b	267	assert(kr == KERN_SUCCESS);
91447636	268	kr = vm_map_copyin(ipc_kernel_map, (vm_map_address_t)table_addr,
2d21ac55	269	(vm_map_size_t)table_size, TRUE, &copy);
1c79356b	270	assert(kr == KERN_SUCCESS);
2d21ac55 A	271	tablep = (ipc_info_name_t )copy;
2d21ac55 A	272	*tableCntp = infop->iis_table_size;
1c79356b	273	} else {
2d21ac55 A	274	tablep = (ipc_info_name_t )0;
	275	*tableCntp = 0;
	276	}
1c79356b	277
316670eb A	278	/* splay tree is obsolete, no work to do... */
	279	treep = (ipc_info_tree_name_t )0;
	280	*treeCntp = 0;
1c79356b	281	return KERN_SUCCESS;
1c79356b	282	}
91447636	283	#endif /* MACH_IPC_DEBUG */
1c79356b A	284
	285	/*
	286	* Routine: mach_port_dnrequest_info
	287	* Purpose:
	288	* Returns information about the dead-name requests
	289	* registered with the named receive right.
	290	* Conditions:
	291	* Nothing locked.
	292	* Returns:
	293	* KERN_SUCCESS Retrieved information.
	294	* KERN_INVALID_TASK The space is null.
	295	* KERN_INVALID_TASK The space is dead.
	296	* KERN_INVALID_NAME The name doesn't denote a right.
	297	* KERN_INVALID_RIGHT Name doesn't denote receive rights.
	298	*/
	299
91447636	300	#if !MACH_IPC_DEBUG
1c79356b A	301	kern_return_t
1c79356b A	302	mach_port_dnrequest_info(
91447636 A	303	__unused ipc_space_t space,
	304	__unused mach_port_name_t name,
	305	__unused unsigned int *totalp,
	306	__unused unsigned int *usedp)
1c79356b	307	{
1c79356b	308	return KERN_FAILURE;
91447636	309	}
1c79356b	310	#else
91447636 A	311	kern_return_t
	312	mach_port_dnrequest_info(
	313	ipc_space_t space,
	314	mach_port_name_t name,
	315	unsigned int *totalp,
	316	unsigned int *usedp)
	317	{
1c79356b A	318	unsigned int total, used;
	319	ipc_port_t port;
	320	kern_return_t kr;
	321
	322	if (space == IS_NULL)
	323	return KERN_INVALID_TASK;
	324
	325	kr = ipc_port_translate_receive(space, name, &port);
	326	if (kr != KERN_SUCCESS)
	327	return kr;
	328	/* port is locked and active */
	329
6d2010ae	330	if (port->ip_requests == IPR_NULL) {
1c79356b A	331	total = 0;
	332	used = 0;
	333	} else {
6d2010ae	334	ipc_port_request_t requests = port->ip_requests;
1c79356b A	335	ipc_port_request_index_t index;
1c79356b A	336
6d2010ae	337	total = requests->ipr_size->its_size;
1c79356b A	338
	339	for (index = 1, used = 0;
	340	index < total; index++) {
6d2010ae	341	ipc_port_request_t ipr = &requests[index];
1c79356b A	342
	343	if (ipr->ipr_name != MACH_PORT_NULL)
	344	used++;
	345	}
	346	}
	347	ip_unlock(port);
	348
	349	*totalp = total;
	350	*usedp = used;
	351	return KERN_SUCCESS;
1c79356b	352	}
91447636	353	#endif /* MACH_IPC_DEBUG */
1c79356b A	354
1c79356b A	355	/*
b0d623f7	356	* Routine: mach_port_kobject [kernel call]
1c79356b A	357	* Purpose:
1c79356b A	358	* Retrieve the type and address of the kernel object
b0d623f7 A	359	* represented by a send or receive right. Returns
	360	* the kernel address in a mach_vm_address_t to
	361	* mask potential differences in kernel address space
	362	* size.
1c79356b A	363	* Conditions:
	364	* Nothing locked.
	365	* Returns:
	366	* KERN_SUCCESS Retrieved kernel object info.
	367	* KERN_INVALID_TASK The space is null.
	368	* KERN_INVALID_TASK The space is dead.
	369	* KERN_INVALID_NAME The name doesn't denote a right.
	370	* KERN_INVALID_RIGHT Name doesn't denote
	371	* send or receive rights.
	372	*/
	373
91447636	374	#if !MACH_IPC_DEBUG
1c79356b	375	kern_return_t
b0d623f7	376	mach_port_kobject(
91447636 A	377	__unused ipc_space_t space,
91447636 A	378	__unused mach_port_name_t name,
b0d623f7 A	379	__unused natural_t *typep,
b0d623f7 A	380	__unused mach_vm_address_t *addrp)
1c79356b	381	{
1c79356b	382	return KERN_FAILURE;
91447636	383	}
1c79356b	384	#else
91447636	385	kern_return_t
b0d623f7	386	mach_port_kobject(
91447636 A	387	ipc_space_t space,
91447636 A	388	mach_port_name_t name,
b0d623f7 A	389	natural_t *typep,
b0d623f7 A	390	mach_vm_address_t *addrp)
91447636	391	{
1c79356b A	392	ipc_entry_t entry;
	393	ipc_port_t port;
	394	kern_return_t kr;
316670eb	395	mach_vm_address_t kaddr;
1c79356b	396
2d21ac55 A	397	if (space == IS_NULL)
	398	return KERN_INVALID_TASK;
	399
1c79356b A	400	kr = ipc_right_lookup_read(space, name, &entry);
	401	if (kr != KERN_SUCCESS)
	402	return kr;
	403	/* space is read-locked and active */
	404
	405	if ((entry->ie_bits & MACH_PORT_TYPE_SEND_RECEIVE) == 0) {
	406	is_read_unlock(space);
	407	return KERN_INVALID_RIGHT;
	408	}
	409
	410	port = (ipc_port_t) entry->ie_object;
	411	assert(port != IP_NULL);
	412
	413	ip_lock(port);
	414	is_read_unlock(space);
	415
	416	if (!ip_active(port)) {
	417	ip_unlock(port);
	418	return KERN_INVALID_RIGHT;
	419	}
	420
	421	*typep = (unsigned int) ip_kotype(port);
316670eb	422	kaddr = (mach_vm_address_t)port->ip_kobject;
1c79356b	423	ip_unlock(port);
1c79356b	424
316670eb A	425	if (0 != kaddr && is_ipc_kobject(*typep))
	426	*addrp = VM_KERNEL_ADDRPERM(VM_KERNEL_UNSLIDE(kaddr));
	427	else
	428	*addrp = 0;
	429
	430	return KERN_SUCCESS;
1c79356b	431	}
91447636	432	#endif /* MACH_IPC_DEBUG */
b0d623f7 A	433	/*
	434	* Routine: mach_port_kernel_object [Legacy kernel call]
	435	* Purpose:
	436	* Retrieve the type and address of the kernel object
	437	* represented by a send or receive right. Hard-coded
	438	* to return only the low-order 32-bits of the kernel
	439	* object.
	440	* Conditions:
	441	* Nothing locked.
	442	* Returns:
	443	* KERN_SUCCESS Retrieved kernel object info.
	444	* KERN_INVALID_TASK The space is null.
	445	* KERN_INVALID_TASK The space is dead.
	446	* KERN_INVALID_NAME The name doesn't denote a right.
	447	* KERN_INVALID_RIGHT Name doesn't denote
	448	* send or receive rights.
	449	*/
	450
	451	#if !MACH_IPC_DEBUG
	452	kern_return_t
	453	mach_port_kernel_object(
	454	__unused ipc_space_t space,
	455	__unused mach_port_name_t name,
	456	__unused unsigned int *typep,
	457	__unused unsigned int *addrp)
	458	{
	459	return KERN_FAILURE;
	460	}
	461	#else
	462	kern_return_t
	463	mach_port_kernel_object(
	464	ipc_space_t space,
	465	mach_port_name_t name,
	466	unsigned int *typep,
	467	unsigned int *addrp)
	468	{
	469	mach_vm_address_t addr = 0;
	470	kern_return_t kr;
	471
	472	kr = mach_port_kobject(space, name, typep, &addr);
	473	*addrp = (unsigned int) addr;
	474	return kr;
	475	}
	476	#endif /* MACH_IPC_DEBUG */