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1c79356b A |
1 | /* |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
3 | * | |
4 | * @APPLE_LICENSE_HEADER_START@ | |
5 | * | |
43866e37 | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
1c79356b | 7 | * |
43866e37 A |
8 | * This file contains Original Code and/or Modifications of Original Code |
9 | * as defined in and that are subject to the Apple Public Source License | |
10 | * Version 2.0 (the 'License'). You may not use this file except in | |
11 | * compliance with the License. Please obtain a copy of the License at | |
12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
13 | * file. | |
14 | * | |
15 | * The Original Code and all software distributed under the License are | |
16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
1c79356b A |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
43866e37 A |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
20 | * Please see the License for the specific language governing rights and | |
21 | * limitations under the License. | |
1c79356b A |
22 | * |
23 | * @APPLE_LICENSE_HEADER_END@ | |
24 | */ | |
25 | /* | |
26 | * @OSF_FREE_COPYRIGHT@ | |
27 | */ | |
28 | /* | |
29 | * Mach Operating System | |
30 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University | |
31 | * All Rights Reserved. | |
32 | * | |
33 | * Permission to use, copy, modify and distribute this software and its | |
34 | * documentation is hereby granted, provided that both the copyright | |
35 | * notice and this permission notice appear in all copies of the | |
36 | * software, derivative works or modified versions, and any portions | |
37 | * thereof, and that both notices appear in supporting documentation. | |
38 | * | |
39 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
40 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
41 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
42 | * | |
43 | * Carnegie Mellon requests users of this software to return to | |
44 | * | |
45 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
46 | * School of Computer Science | |
47 | * Carnegie Mellon University | |
48 | * Pittsburgh PA 15213-3890 | |
49 | * | |
50 | * any improvements or extensions that they make and grant Carnegie Mellon | |
51 | * the rights to redistribute these changes. | |
52 | */ | |
53 | /* | |
54 | */ | |
55 | /* | |
56 | * File: mach/mach_port.defs | |
57 | * Author: Rich Draves | |
58 | * | |
59 | * Exported kernel calls. | |
60 | */ | |
61 | ||
62 | subsystem | |
63 | #if KERNEL_SERVER | |
64 | KernelServer | |
55e303ae | 65 | #endif /* KERNEL_SERVER */ |
1c79356b A |
66 | mach_port 3200; |
67 | ||
68 | #include <mach/std_types.defs> | |
69 | #include <mach/mach_types.defs> | |
70 | #include <mach_debug/mach_debug_types.defs> | |
71 | ||
72 | /* | |
73 | * Returns the set of port and port set names | |
74 | * to which the target task has access, along with | |
75 | * the type (set or port) for each name. | |
76 | */ | |
77 | ||
78 | routine mach_port_names( | |
79 | task : ipc_space_t; | |
80 | out names : mach_port_name_array_t; | |
81 | out types : mach_port_type_array_t); | |
82 | ||
83 | /* | |
84 | * Returns the type (set or port) for the port name | |
85 | * within the target task. Also indicates whether | |
86 | * there is a dead-name request for the name. | |
87 | */ | |
88 | ||
89 | routine mach_port_type( | |
90 | task : ipc_space_t; | |
91 | name : mach_port_name_t; | |
92 | out ptype : mach_port_type_t); | |
93 | ||
94 | /* | |
95 | * Changes the name by which a port (or port set) is known to | |
96 | * the target task. The new name can't be in use. The | |
97 | * old name becomes available for recycling. | |
98 | */ | |
99 | ||
100 | routine mach_port_rename( | |
101 | task : ipc_space_t; | |
102 | old_name : mach_port_name_t; | |
103 | new_name : mach_port_name_t); | |
104 | ||
105 | /* | |
106 | * Allocates the specified kind of object, with the given name. | |
107 | * The right must be one of | |
108 | * MACH_PORT_RIGHT_RECEIVE | |
109 | * MACH_PORT_RIGHT_PORT_SET | |
110 | * MACH_PORT_RIGHT_DEAD_NAME | |
111 | * New port sets are empty. New ports don't have any | |
112 | * send/send-once rights or queued messages. The make-send | |
113 | * count is zero and their queue limit is MACH_PORT_QLIMIT_DEFAULT. | |
114 | * New sets, ports, and dead names have one user reference. | |
115 | */ | |
116 | ||
117 | routine mach_port_allocate_name( | |
118 | task : ipc_space_t; | |
119 | right : mach_port_right_t; | |
120 | name : mach_port_name_t); | |
121 | ||
122 | /* | |
123 | * Allocates the specified kind of object. | |
124 | * The right must be one of | |
125 | * MACH_PORT_RIGHT_RECEIVE | |
126 | * MACH_PORT_RIGHT_PORT_SET | |
127 | * MACH_PORT_RIGHT_DEAD_NAME | |
128 | * Like port_allocate_name, but the kernel picks a name. | |
129 | * It can use any name not associated with a right. | |
130 | */ | |
131 | ||
132 | routine mach_port_allocate( | |
133 | task : ipc_space_t; | |
134 | right : mach_port_right_t; | |
135 | out name : mach_port_name_t); | |
136 | ||
137 | /* | |
138 | * Destroys all rights associated with the name and makes it | |
139 | * available for recycling immediately. The name can be a | |
140 | * port (possibly with multiple user refs), a port set, or | |
141 | * a dead name (again, with multiple user refs). | |
142 | */ | |
143 | ||
144 | routine mach_port_destroy( | |
145 | task : ipc_space_t; | |
146 | name : mach_port_name_t); | |
147 | ||
148 | /* | |
149 | * Releases one send/send-once/dead-name user ref. | |
150 | * Just like mach_port_mod_refs -1, but deduces the | |
151 | * correct type of right. This allows a user task | |
152 | * to release a ref for a port without worrying | |
153 | * about whether the port has died or not. | |
154 | */ | |
155 | ||
156 | routine mach_port_deallocate( | |
157 | task : ipc_space_t; | |
158 | name : mach_port_name_t); | |
159 | ||
160 | /* | |
161 | * A port set always has one user ref. | |
162 | * A send-once right always has one user ref. | |
163 | * A dead name always has one or more user refs. | |
164 | * A send right always has one or more user refs. | |
165 | * A receive right always has one user ref. | |
166 | * The right must be one of | |
167 | * MACH_PORT_RIGHT_RECEIVE | |
168 | * MACH_PORT_RIGHT_PORT_SET | |
169 | * MACH_PORT_RIGHT_DEAD_NAME | |
170 | * MACH_PORT_RIGHT_SEND | |
171 | * MACH_PORT_RIGHT_SEND_ONCE | |
172 | */ | |
173 | ||
174 | routine mach_port_get_refs( | |
175 | task : ipc_space_t; | |
176 | name : mach_port_name_t; | |
177 | right : mach_port_right_t; | |
178 | out refs : mach_port_urefs_t); | |
179 | ||
180 | /* | |
181 | * The delta is a signed change to the task's | |
182 | * user ref count for the right. Only dead names | |
183 | * and send rights can have a positive delta. | |
184 | * The resulting user ref count can't be negative. | |
185 | * If it is zero, the right is deallocated. | |
186 | * If the name isn't a composite right, it becomes | |
187 | * available for recycling. The right must be one of | |
188 | * MACH_PORT_RIGHT_RECEIVE | |
189 | * MACH_PORT_RIGHT_PORT_SET | |
190 | * MACH_PORT_RIGHT_DEAD_NAME | |
191 | * MACH_PORT_RIGHT_SEND | |
192 | * MACH_PORT_RIGHT_SEND_ONCE | |
193 | */ | |
194 | ||
195 | routine mach_port_mod_refs( | |
196 | task : ipc_space_t; | |
197 | name : mach_port_name_t; | |
198 | right : mach_port_right_t; | |
199 | delta : mach_port_delta_t); | |
200 | ||
9bccf70c | 201 | skip; |
1c79356b A |
202 | |
203 | /* | |
204 | * Only valid for receive rights. | |
205 | * Sets the make-send count for the port. | |
206 | */ | |
207 | routine mach_port_set_mscount( | |
208 | task : ipc_space_t; | |
209 | name : mach_port_name_t; | |
210 | mscount : mach_port_mscount_t); | |
211 | ||
212 | /* | |
213 | * Only valid for port sets. Returns a list of | |
214 | * the members. | |
215 | */ | |
216 | ||
217 | routine mach_port_get_set_status( | |
218 | task : ipc_space_t; | |
219 | name : mach_port_name_t; | |
220 | out members : mach_port_name_array_t); | |
221 | ||
222 | /* | |
223 | * Puts the member port (the task must have receive rights) | |
224 | * into the after port set. (Or removes it from any port set | |
225 | * if after is MACH_PORT_NULL.) If the port is already in | |
226 | * a set, does an atomic move. | |
227 | */ | |
228 | ||
229 | routine mach_port_move_member( | |
230 | task : ipc_space_t; | |
231 | member : mach_port_name_t; | |
232 | after : mach_port_name_t); | |
233 | ||
234 | /* | |
235 | * Requests a notification from the kernel. The request | |
236 | * must supply the send-once right which is used for | |
237 | * the notification. If a send-once right was previously | |
238 | * registered, it is returned. The msg_id must be one of | |
239 | * MACH_NOTIFY_PORT_DESTROYED (receive rights) | |
240 | * MACH_NOTIFY_DEAD_NAME (send/receive/send-once rights) | |
241 | * MACH_NOTIFY_NO_SENDERS (receive rights) | |
242 | * | |
243 | * The sync value specifies whether a notification should | |
244 | * get sent immediately, if appropriate. The exact meaning | |
245 | * depends on the notification: | |
246 | * MACH_NOTIFY_PORT_DESTROYED: must be zero. | |
247 | * MACH_NOTIFY_DEAD_NAME: if non-zero, then name can be dead, | |
248 | * and the notification gets sent immediately. | |
249 | * If zero, then name can't be dead. | |
250 | * MACH_NOTIFY_NO_SENDERS: the notification gets sent | |
251 | * immediately if the current mscount is greater | |
252 | * than or equal to the sync value and there are no | |
253 | * extant send rights. | |
254 | */ | |
255 | ||
256 | routine mach_port_request_notification( | |
257 | task : ipc_space_t; | |
258 | name : mach_port_name_t; | |
259 | msgid : mach_msg_id_t; | |
260 | sync : mach_port_mscount_t; | |
261 | notify : mach_port_send_once_t; | |
0b4e3aa0 | 262 | out previous : mach_port_move_send_once_t); |
1c79356b A |
263 | |
264 | /* | |
265 | * Inserts the specified rights into the target task, | |
266 | * using the specified name. If inserting send/receive | |
267 | * rights and the task already has send/receive rights | |
268 | * for the port, then the names must agree. In any case, | |
269 | * the task gains a user ref for the port. | |
270 | */ | |
271 | ||
272 | routine mach_port_insert_right( | |
273 | task : ipc_space_t; | |
274 | name : mach_port_name_t; | |
275 | poly : mach_port_poly_t); | |
276 | ||
277 | /* | |
278 | * Returns the specified right for the named port | |
279 | * in the target task, extracting that right from | |
280 | * the target task. The target task loses a user | |
281 | * ref and the name may be available for recycling. | |
282 | * msgt_name must be one of | |
283 | * MACH_MSG_TYPE_MOVE_RECEIVE | |
284 | * MACH_MSG_TYPE_COPY_SEND | |
285 | * MACH_MSG_TYPE_MAKE_SEND | |
286 | * MACH_MSG_TYPE_MOVE_SEND | |
287 | * MACH_MSG_TYPE_MAKE_SEND_ONCE | |
288 | * MACH_MSG_TYPE_MOVE_SEND_ONCE | |
289 | */ | |
290 | ||
291 | routine mach_port_extract_right( | |
292 | task : ipc_space_t; | |
293 | name : mach_port_name_t; | |
294 | msgt_name : mach_msg_type_name_t; | |
295 | out poly : mach_port_poly_t); | |
296 | ||
297 | /* | |
298 | * Only valid for receive rights. | |
299 | * Sets the sequence number for the port. | |
300 | */ | |
301 | ||
302 | routine mach_port_set_seqno( | |
303 | task : ipc_space_t; | |
304 | name : mach_port_name_t; | |
305 | seqno : mach_port_seqno_t); | |
306 | ||
307 | /* | |
308 | * Returns information about a port. | |
309 | */ | |
310 | ||
311 | routine mach_port_get_attributes( | |
312 | task : ipc_space_t; | |
313 | name : mach_port_name_t; | |
314 | flavor : mach_port_flavor_t; | |
315 | out port_info_out : mach_port_info_t, CountInOut); | |
316 | ||
317 | /* | |
318 | * Set attributes of a port | |
319 | */ | |
320 | ||
321 | routine mach_port_set_attributes( | |
322 | task : ipc_space_t; | |
323 | name : mach_port_name_t; | |
324 | flavor : mach_port_flavor_t; | |
325 | port_info : mach_port_info_t); | |
326 | ||
327 | ||
328 | /* | |
329 | * Allocates the specified kind of object, qos version. | |
330 | * The right must be | |
331 | * MACH_PORT_RIGHT_RECEIVE | |
332 | * Like port_allocate_name, but the kernel picks a name. | |
333 | * It can use any name not associated with a right. | |
334 | */ | |
335 | ||
336 | routine mach_port_allocate_qos( | |
337 | task : ipc_space_t; | |
338 | right : mach_port_right_t; | |
339 | inout qos : mach_port_qos_t; | |
340 | out name : mach_port_name_t); | |
341 | ||
9bccf70c | 342 | |
1c79356b A |
343 | /* |
344 | * Generic interface to allocation various kinds of ports. | |
345 | * Should never be called directly by users (at least not | |
346 | * unless they are exceedingly masochistic). | |
347 | */ | |
348 | ||
349 | routine mach_port_allocate_full( | |
350 | task : ipc_space_t; | |
351 | right : mach_port_right_t; | |
9bccf70c | 352 | proto : mach_port_t; |
1c79356b A |
353 | inout qos : mach_port_qos_t; |
354 | inout name : mach_port_name_t); | |
355 | ||
356 | ||
357 | /* | |
358 | * Pre-expand task port name space. | |
359 | */ | |
360 | routine task_set_port_space( | |
361 | task : ipc_space_t; | |
362 | table_entries : int); | |
363 | ||
364 | ||
365 | /* | |
366 | * Returns the exact number of extant send rights | |
367 | * for the given receive right. | |
368 | * This call is only valid on MACH_IPC_DEBUG kernels. | |
369 | * Otherwise, KERN_FAILURE is returned. | |
370 | */ | |
371 | routine mach_port_get_srights( | |
372 | task : ipc_space_t; | |
373 | name : mach_port_name_t; | |
374 | out srights : mach_port_rights_t); | |
375 | ||
376 | ||
377 | /* | |
378 | * Returns information about an IPC space. | |
379 | * This call is only valid on MACH_IPC_DEBUG kernels. | |
380 | * Otherwise, KERN_FAILURE is returned. | |
381 | */ | |
382 | routine mach_port_space_info( | |
383 | task : ipc_space_t; | |
384 | out info : ipc_info_space_t; | |
385 | out table_info : ipc_info_name_array_t, | |
386 | Dealloc; | |
387 | out tree_info : ipc_info_tree_name_array_t, | |
388 | Dealloc); | |
389 | ||
390 | /* | |
391 | * Returns information about the dead-name requests | |
392 | * registered with the named receive right. | |
393 | * This call is only valid on MACH_IPC_DEBUG kernels. | |
394 | * Otherwise, KERN_FAILURE is returned. | |
395 | */ | |
396 | routine mach_port_dnrequest_info( | |
397 | task : ipc_space_t; | |
398 | name : mach_port_name_t; | |
399 | out total : unsigned; /* total size of table */ | |
400 | out used : unsigned); /* amount used */ | |
401 | ||
402 | /* | |
403 | * Return the type and address of the kernel object | |
404 | * that the given send/receive right represents. | |
405 | * This call is only valid on MACH_IPC_DEBUG kernels. | |
406 | * Otherwise, KERN_FAILURE is returned. | |
407 | */ | |
408 | routine mach_port_kernel_object( | |
409 | task : ipc_space_t; | |
410 | name : mach_port_name_t; | |
411 | out object_type : unsigned; | |
412 | out object_addr : vm_offset_t); | |
413 | ||
414 | ||
415 | /* | |
416 | * Inserts the specified rights into the portset identified | |
417 | * by the <task, pset> pair. The results of passing in the | |
418 | * Poly argument via the supplied disposition must yield a | |
419 | * receive right. | |
420 | * | |
421 | * If the <task,pset> pair does not represent a valid portset | |
422 | * KERN_INVALID_RIGHT is returned. | |
423 | * | |
424 | * If the passed in name argument does not represent a receive | |
425 | * right, KERN_INVALID_CAPABILITY will be returned. | |
426 | * | |
427 | * If the port represented by the receive right is already in | |
428 | * the portset, KERN_ALREADY_IN_SET is returned. | |
429 | */ | |
430 | routine mach_port_insert_member( | |
431 | task : ipc_space_t; | |
432 | name : mach_port_name_t; | |
433 | pset : mach_port_name_t); | |
434 | ||
435 | /* | |
436 | * Extracts the specified right from the named portset | |
437 | * in the target task. | |
438 | * the target task. The target task loses a user | |
439 | * ref and the name may be available for recycling. | |
440 | * msgt_name must be one of | |
441 | * MACH_MSG_TYPE_MOVE_RECEIVE | |
442 | * MACH_MSG_TYPE_COPY_SEND | |
443 | * MACH_MSG_TYPE_MAKE_SEND | |
444 | * MACH_MSG_TYPE_MOVE_SEND | |
445 | * MACH_MSG_TYPE_MAKE_SEND_ONCE | |
446 | * MACH_MSG_TYPE_MOVE_SEND_ONCE | |
447 | */ | |
448 | ||
449 | routine mach_port_extract_member( | |
450 | task : ipc_space_t; | |
451 | name : mach_port_name_t; | |
452 | pset : mach_port_name_t); | |
453 |