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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 *
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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 *
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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
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20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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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@
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27 */
28/*
29 * @OSF_FREE_COPYRIGHT@
30 */
31/*
32 * Mach Operating System
33 * Copyright (c) 1991,1990,1989 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: mach/mach_port.defs
60 * Author: Rich Draves
61 *
62 * Exported kernel calls.
63 */
64
65subsystem
66#if KERNEL_SERVER
67 KernelServer
55e303ae 68#endif /* KERNEL_SERVER */
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69 mach_port 3200;
70
71#include <mach/std_types.defs>
72#include <mach/mach_types.defs>
73#include <mach_debug/mach_debug_types.defs>
74
75/*
76 * Returns the set of port and port set names
77 * to which the target task has access, along with
78 * the type (set or port) for each name.
79 */
80
81routine mach_port_names(
82 task : ipc_space_t;
83 out names : mach_port_name_array_t;
84 out types : mach_port_type_array_t);
85
86/*
87 * Returns the type (set or port) for the port name
88 * within the target task. Also indicates whether
89 * there is a dead-name request for the name.
90 */
91
92routine mach_port_type(
93 task : ipc_space_t;
94 name : mach_port_name_t;
95 out ptype : mach_port_type_t);
96
97/*
98 * Changes the name by which a port (or port set) is known to
99 * the target task. The new name can't be in use. The
100 * old name becomes available for recycling.
101 */
102
103routine mach_port_rename(
104 task : ipc_space_t;
105 old_name : mach_port_name_t;
106 new_name : mach_port_name_t);
107
108/*
109 * Allocates the specified kind of object, with the given name.
110 * The right must be one of
111 * MACH_PORT_RIGHT_RECEIVE
112 * MACH_PORT_RIGHT_PORT_SET
113 * MACH_PORT_RIGHT_DEAD_NAME
114 * New port sets are empty. New ports don't have any
115 * send/send-once rights or queued messages. The make-send
116 * count is zero and their queue limit is MACH_PORT_QLIMIT_DEFAULT.
117 * New sets, ports, and dead names have one user reference.
118 */
119
120routine mach_port_allocate_name(
121 task : ipc_space_t;
122 right : mach_port_right_t;
123 name : mach_port_name_t);
124
125/*
126 * Allocates the specified kind of object.
127 * The right must be one of
128 * MACH_PORT_RIGHT_RECEIVE
129 * MACH_PORT_RIGHT_PORT_SET
130 * MACH_PORT_RIGHT_DEAD_NAME
131 * Like port_allocate_name, but the kernel picks a name.
132 * It can use any name not associated with a right.
133 */
134
135routine mach_port_allocate(
136 task : ipc_space_t;
137 right : mach_port_right_t;
138 out name : mach_port_name_t);
139
140/*
141 * Destroys all rights associated with the name and makes it
142 * available for recycling immediately. The name can be a
143 * port (possibly with multiple user refs), a port set, or
144 * a dead name (again, with multiple user refs).
145 */
146
147routine mach_port_destroy(
148 task : ipc_space_t;
149 name : mach_port_name_t);
150
151/*
152 * Releases one send/send-once/dead-name user ref.
153 * Just like mach_port_mod_refs -1, but deduces the
154 * correct type of right. This allows a user task
155 * to release a ref for a port without worrying
156 * about whether the port has died or not.
157 */
158
159routine mach_port_deallocate(
160 task : ipc_space_t;
161 name : mach_port_name_t);
162
163/*
164 * A port set always has one user ref.
165 * A send-once right always has one user ref.
166 * A dead name always has one or more user refs.
167 * A send right always has one or more user refs.
168 * A receive right always has one user ref.
169 * The right must be one of
170 * MACH_PORT_RIGHT_RECEIVE
171 * MACH_PORT_RIGHT_PORT_SET
172 * MACH_PORT_RIGHT_DEAD_NAME
173 * MACH_PORT_RIGHT_SEND
174 * MACH_PORT_RIGHT_SEND_ONCE
175 */
176
177routine mach_port_get_refs(
178 task : ipc_space_t;
179 name : mach_port_name_t;
180 right : mach_port_right_t;
181 out refs : mach_port_urefs_t);
182
183/*
184 * The delta is a signed change to the task's
185 * user ref count for the right. Only dead names
186 * and send rights can have a positive delta.
187 * The resulting user ref count can't be negative.
188 * If it is zero, the right is deallocated.
189 * If the name isn't a composite right, it becomes
190 * available for recycling. The right must be one of
191 * MACH_PORT_RIGHT_RECEIVE
192 * MACH_PORT_RIGHT_PORT_SET
193 * MACH_PORT_RIGHT_DEAD_NAME
194 * MACH_PORT_RIGHT_SEND
195 * MACH_PORT_RIGHT_SEND_ONCE
196 */
197
198routine mach_port_mod_refs(
199 task : ipc_space_t;
200 name : mach_port_name_t;
201 right : mach_port_right_t;
202 delta : mach_port_delta_t);
203
9bccf70c 204skip;
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205
206/*
207 * Only valid for receive rights.
208 * Sets the make-send count for the port.
209 */
210routine mach_port_set_mscount(
211 task : ipc_space_t;
212 name : mach_port_name_t;
213 mscount : mach_port_mscount_t);
214
215/*
216 * Only valid for port sets. Returns a list of
217 * the members.
218 */
219
220routine mach_port_get_set_status(
221 task : ipc_space_t;
222 name : mach_port_name_t;
223 out members : mach_port_name_array_t);
224
225/*
226 * Puts the member port (the task must have receive rights)
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227 * into the after port set. If the port is already a member
228 * of any set(s), it is atomically removed from those sets as
229 * part of this operation. (If after is MACH_PORT_NULL, the
230 * port is still removed from all current sets).
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231 */
232
233routine mach_port_move_member(
234 task : ipc_space_t;
235 member : mach_port_name_t;
236 after : mach_port_name_t);
237
238/*
239 * Requests a notification from the kernel. The request
240 * must supply the send-once right which is used for
241 * the notification. If a send-once right was previously
6d2010ae 242 * registered, it is returned. The msgid must be one of:
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243 * MACH_NOTIFY_PORT_DESTROYED (receive rights)
244 * MACH_NOTIFY_DEAD_NAME (send/receive/send-once rights)
6d2010ae 245 * MACH_NOTIFY_SEND_POSSIBLE (send/receive/send-once rights)
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246 * MACH_NOTIFY_NO_SENDERS (receive rights)
247 *
248 * The sync value specifies whether a notification should
249 * get sent immediately, if appropriate. The exact meaning
250 * depends on the notification:
251 * MACH_NOTIFY_PORT_DESTROYED: must be zero.
252 * MACH_NOTIFY_DEAD_NAME: if non-zero, then name can be dead,
253 * and the notification gets sent immediately.
254 * If zero, then name can't be dead.
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255 * MACH_NOTIFY_SEND_POSSIBLE: if non-zero, will generate a send-
256 * possible notification as soon as it is possible to send
257 * to the port. If zero, will generate a send-possible
258 * notification only after a subsequent failed send
259 * (with MACH_SEND_NOTIFY option to mach_msg call). Can
260 * generate a dead-name notification if name is already dead
261 * or becomes dead before a send-possible notification fires.
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262 * MACH_NOTIFY_NO_SENDERS: the notification gets sent
263 * immediately if the current mscount is greater
264 * than or equal to the sync value and there are no
265 * extant send rights.
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266 *
267 * If the name is deleted before a successfully registered notification
268 * is delivered, it is replaced with a port-deleted notification.
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269 */
270
271routine mach_port_request_notification(
272 task : ipc_space_t;
273 name : mach_port_name_t;
274 msgid : mach_msg_id_t;
275 sync : mach_port_mscount_t;
276 notify : mach_port_send_once_t;
0b4e3aa0 277 out previous : mach_port_move_send_once_t);
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278
279/*
280 * Inserts the specified rights into the target task,
281 * using the specified name. If inserting send/receive
282 * rights and the task already has send/receive rights
283 * for the port, then the names must agree. In any case,
284 * the task gains a user ref for the port.
285 */
286
287routine mach_port_insert_right(
288 task : ipc_space_t;
289 name : mach_port_name_t;
290 poly : mach_port_poly_t);
291
292/*
293 * Returns the specified right for the named port
294 * in the target task, extracting that right from
295 * the target task. The target task loses a user
296 * ref and the name may be available for recycling.
297 * msgt_name must be one of
298 * MACH_MSG_TYPE_MOVE_RECEIVE
299 * MACH_MSG_TYPE_COPY_SEND
300 * MACH_MSG_TYPE_MAKE_SEND
301 * MACH_MSG_TYPE_MOVE_SEND
302 * MACH_MSG_TYPE_MAKE_SEND_ONCE
303 * MACH_MSG_TYPE_MOVE_SEND_ONCE
304 */
305
306routine mach_port_extract_right(
307 task : ipc_space_t;
308 name : mach_port_name_t;
309 msgt_name : mach_msg_type_name_t;
310 out poly : mach_port_poly_t);
311
312/*
313 * Only valid for receive rights.
314 * Sets the sequence number for the port.
315 */
316
317routine mach_port_set_seqno(
318 task : ipc_space_t;
319 name : mach_port_name_t;
320 seqno : mach_port_seqno_t);
321
322/*
323 * Returns information about a port.
324 */
325
326routine mach_port_get_attributes(
327 task : ipc_space_t;
328 name : mach_port_name_t;
329 flavor : mach_port_flavor_t;
330 out port_info_out : mach_port_info_t, CountInOut);
331
332/*
333 * Set attributes of a port
334 */
335
336routine mach_port_set_attributes(
337 task : ipc_space_t;
338 name : mach_port_name_t;
339 flavor : mach_port_flavor_t;
340 port_info : mach_port_info_t);
341
342
343/*
344 * Allocates the specified kind of object, qos version.
345 * The right must be
346 * MACH_PORT_RIGHT_RECEIVE
347 * Like port_allocate_name, but the kernel picks a name.
348 * It can use any name not associated with a right.
349 */
350
351routine mach_port_allocate_qos(
352 task : ipc_space_t;
353 right : mach_port_right_t;
354 inout qos : mach_port_qos_t;
355 out name : mach_port_name_t);
356
9bccf70c 357
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358/*
359 * Generic interface to allocation various kinds of ports.
360 * Should never be called directly by users (at least not
361 * unless they are exceedingly masochistic).
362 */
363
364routine mach_port_allocate_full(
365 task : ipc_space_t;
366 right : mach_port_right_t;
9bccf70c 367 proto : mach_port_t;
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368 inout qos : mach_port_qos_t;
369 inout name : mach_port_name_t);
370
371
372/*
373 * Pre-expand task port name space.
374 */
375routine task_set_port_space(
376 task : ipc_space_t;
377 table_entries : int);
378
379
380/*
381 * Returns the exact number of extant send rights
382 * for the given receive right.
383 * This call is only valid on MACH_IPC_DEBUG kernels.
384 * Otherwise, KERN_FAILURE is returned.
385 */
386routine mach_port_get_srights(
387 task : ipc_space_t;
388 name : mach_port_name_t;
389 out srights : mach_port_rights_t);
390
391
392/*
393 * Returns information about an IPC space.
394 * This call is only valid on MACH_IPC_DEBUG kernels.
395 * Otherwise, KERN_FAILURE is returned.
396 */
397routine mach_port_space_info(
398 task : ipc_space_t;
91447636 399 out space_info : ipc_info_space_t;
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400 out table_info : ipc_info_name_array_t;
401 out tree_info : ipc_info_tree_name_array_t);
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402
403/*
404 * Returns information about the dead-name requests
405 * registered with the named receive right.
406 * This call is only valid on MACH_IPC_DEBUG kernels.
407 * Otherwise, KERN_FAILURE is returned.
408 */
409routine mach_port_dnrequest_info(
410 task : ipc_space_t;
411 name : mach_port_name_t;
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412 out dnr_total : unsigned; /* total size of table */
413 out dnr_used : unsigned); /* amount used */
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414
415/*
416 * Return the type and address of the kernel object
417 * that the given send/receive right represents.
418 * This call is only valid on MACH_IPC_DEBUG kernels.
419 * Otherwise, KERN_FAILURE is returned.
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420 *
421 * This interface is DEPRECATED in favor of the new
422 * mach_port_kernel_object64() call (see below).
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423 */
424routine mach_port_kernel_object(
425 task : ipc_space_t;
426 name : mach_port_name_t;
427 out object_type : unsigned;
b0d623f7 428 out object_addr : unsigned);
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429
430
431/*
432 * Inserts the specified rights into the portset identified
433 * by the <task, pset> pair. The results of passing in the
434 * Poly argument via the supplied disposition must yield a
435 * receive right.
436 *
437 * If the <task,pset> pair does not represent a valid portset
438 * KERN_INVALID_RIGHT is returned.
439 *
440 * If the passed in name argument does not represent a receive
441 * right, KERN_INVALID_CAPABILITY will be returned.
442 *
443 * If the port represented by the receive right is already in
444 * the portset, KERN_ALREADY_IN_SET is returned.
445 */
446routine mach_port_insert_member(
447 task : ipc_space_t;
448 name : mach_port_name_t;
449 pset : mach_port_name_t);
450
451/*
452 * Extracts the specified right from the named portset
453 * in the target task.
454 * the target task. The target task loses a user
455 * ref and the name may be available for recycling.
456 * msgt_name must be one of
457 * MACH_MSG_TYPE_MOVE_RECEIVE
458 * MACH_MSG_TYPE_COPY_SEND
459 * MACH_MSG_TYPE_MAKE_SEND
460 * MACH_MSG_TYPE_MOVE_SEND
461 * MACH_MSG_TYPE_MAKE_SEND_ONCE
462 * MACH_MSG_TYPE_MOVE_SEND_ONCE
463 */
464
465routine mach_port_extract_member(
466 task : ipc_space_t;
467 name : mach_port_name_t;
468 pset : mach_port_name_t);
469
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470/*
471 * Only valid for receive rights.
472 * Gets the context pointer for the port.
473 */
474
475routine mach_port_get_context(
476 task : ipc_space_t;
477 name : mach_port_name_t;
478 out context : mach_vm_address_t);
479
480/*
481 * Only valid for receive rights.
482 * Sets the context pointer for the port.
483 */
484
485routine mach_port_set_context(
486 task : ipc_space_t;
487 name : mach_port_name_t;
488 context : mach_vm_address_t);
489
490/*
491 * Return the type and address of the kernel object
492 * that the given send/receive right represents.
493 * This call is only valid on MACH_IPC_DEBUG kernels.
494 * Otherwise, KERN_FAILURE is returned.
495 */
496routine mach_port_kobject(
497 task : ipc_space_t;
498 name : mach_port_name_t;
499 out object_type : natural_t;
500 out object_addr : mach_vm_address_t);
501
502
2d21ac55 503/* vim: set ft=c : */