Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/compat/mach/mach_port.h
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1 /* $NetBSD: mach_port.h,v 1.38 2005/12/11 12:20:20 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002-2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Emmanuel Dreyfus 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _MACH_PORT_H_ 40 #define _MACH_PORT_H_ 41 42 #define MACH_PORT_REF(mp) (mp)->mp_refcount++ 43 #define MACH_PORT_UNREF(mp) if (--(mp)->mp_refcount <= 0) mach_port_put(mp) 44 45 #define MACH_PORT_NULL (struct mach_right *)0 46 #define MACH_PORT_DEAD (struct mach_right *)-1 47 48 #define MACH_PORT_RIGHT_SEND 0 49 #define MACH_PORT_RIGHT_RECEIVE 1 50 #define MACH_PORT_RIGHT_SEND_ONCE 2 51 #define MACH_PORT_RIGHT_PORT_SET 3 52 #define MACH_PORT_RIGHT_DEAD_NAME 4 53 #define MACH_PORT_RIGHT_NUMBER 5 54 55 #define MACH_PORT_TYPE_SEND (1 << (MACH_PORT_RIGHT_SEND + 16)) 56 #define MACH_PORT_TYPE_RECEIVE (1 << (MACH_PORT_RIGHT_RECEIVE + 16)) 57 #define MACH_PORT_TYPE_SEND_ONCE (1 << (MACH_PORT_RIGHT_SEND_ONCE + 16)) 58 #define MACH_PORT_TYPE_PORT_SET (1 << (MACH_PORT_RIGHT_PORT_SET + 16)) 59 #define MACH_PORT_TYPE_DEAD_NAME (1 << (MACH_PORT_RIGHT_DEAD_NAME + 16)) 60 #define MACH_PORT_TYPE_PORT_RIGHTS \ 61 (MACH_PORT_TYPE_SEND | MACH_PORT_TYPE_RECEIVE | MACH_PORT_TYPE_SEND_ONCE) 62 #define MACH_PORT_TYPE_PORT_OR_DEAD \ 63 (MACH_PORT_TYPE_PORT_RIGHTS | MACH_PORT_TYPE_DEAD_NAME) 64 #define MACH_PORT_TYPE_ALL_RIGHTS \ 65 (MACH_PORT_TYPE_PORT_OR_DEAD|MACH_PORT_TYPE_PORT_SET) 66 #define MACH_PORT_TYPE_REF_RIGHTS \ 67 (MACH_PORT_TYPE_SEND | MACH_PORT_TYPE_SEND_ONCE | MACH_PORT_TYPE_DEAD_NAME) 68 69 /* port_deallocate */ 70 71 typedef struct { 72 mach_msg_header_t req_msgh; 73 mach_ndr_record_t req_ndr; 74 mach_port_name_t req_name; 75 } mach_port_deallocate_request_t; 76 77 typedef struct { 78 mach_msg_header_t rep_msgh; 79 mach_ndr_record_t rep_ndr; 80 mach_kern_return_t rep_retval; 81 mach_msg_trailer_t rep_trailer; 82 } mach_port_deallocate_reply_t; 83 84 /* port_allocate */ 85 86 typedef struct { 87 mach_msg_header_t req_msgh; 88 mach_ndr_record_t req_ndr; 89 mach_port_right_t req_right; 90 } mach_port_allocate_request_t; 91 92 typedef struct { 93 mach_msg_header_t rep_msgh; 94 mach_ndr_record_t rep_ndr; 95 mach_kern_return_t rep_retval; 96 mach_port_name_t rep_name; 97 mach_msg_trailer_t rep_trailer; 98 } mach_port_allocate_reply_t; 99 100 /* port_insert_right */ 101 102 typedef struct { 103 mach_msg_header_t req_msgh; 104 mach_msg_body_t req_body; 105 mach_msg_port_descriptor_t req_poly; 106 mach_ndr_record_t req_ndr; 107 mach_port_name_t req_name; 108 } mach_port_insert_right_request_t; 109 110 typedef struct { 111 mach_msg_header_t rep_msgh; 112 mach_ndr_record_t rep_ndr; 113 mach_kern_return_t rep_retval; 114 mach_msg_trailer_t rep_trailer; 115 } mach_port_insert_right_reply_t; 116 117 /* port_type */ 118 119 typedef struct { 120 mach_msg_header_t req_msgh; 121 mach_ndr_record_t req_ndr; 122 mach_port_name_t req_name; 123 } mach_port_type_request_t; 124 125 typedef struct { 126 mach_msg_header_t rep_msgh; 127 mach_ndr_record_t rep_ndr; 128 mach_kern_return_t rep_retval; 129 mach_port_type_t rep_ptype; 130 mach_msg_trailer_t rep_trailer; 131 } mach_port_type_reply_t; 132 133 /* port_set_attributes */ 134 135 #define MACH_PORT_LIMITS_INFO 1 136 #define MACH_PORT_RECEIVE_STATUS 2 137 #define MACH_PORT_DNREQUESTS_SIZE 3 138 139 typedef struct mach_port_status { 140 mach_port_name_t mps_pset; 141 mach_port_seqno_t mps_seqno; 142 mach_port_mscount_t mps_mscount; 143 mach_port_msgcount_t mps_qlimit; 144 mach_port_msgcount_t mps_msgcount; 145 mach_port_rights_t mps_sorights; 146 mach_boolean_t mps_srights; 147 mach_boolean_t mps_pdrequest; 148 mach_boolean_t mps_nsrequest; 149 unsigned int mps_flags; 150 } mach_port_status_t; 151 152 typedef struct mach_port_limits { 153 mach_port_msgcount_t mpl_qlimit; 154 } mach_port_limits_t; 155 156 typedef struct { 157 mach_msg_header_t req_msgh; 158 mach_ndr_record_t req_ndr; 159 mach_port_name_t req_name; 160 mach_port_flavor_t req_flavor; 161 mach_msg_type_number_t req_count; 162 mach_integer_t req_port_info[0]; 163 } mach_port_set_attributes_request_t; 164 165 typedef struct { 166 mach_msg_header_t rep_msgh; 167 mach_ndr_record_t rep_ndr; 168 mach_kern_return_t rep_retval; 169 mach_msg_trailer_t rep_trailer; 170 } mach_port_set_attributes_reply_t; 171 172 /* port_get_attributes */ 173 174 #define MACH_PORT_QLIMIT_DEFAULT ((mach_port_msgcount_t) 5) 175 #define MACH_PORT_QLIMIT_MAX ((mach_port_msgcount_t) 16) 176 177 typedef struct { 178 mach_msg_header_t req_msgh; 179 mach_ndr_record_t req_ndr; 180 mach_port_name_t req_name; 181 mach_port_flavor_t req_flavor; 182 mach_msg_type_number_t req_count; 183 } mach_port_get_attributes_request_t; 184 185 typedef struct { 186 mach_msg_header_t rep_msgh; 187 mach_ndr_record_t rep_ndr; 188 mach_kern_return_t rep_retval; 189 mach_msg_type_number_t rep_count; 190 mach_integer_t rep_info[10]; 191 mach_msg_trailer_t rep_trailer; 192 } mach_port_get_attributes_reply_t; 193 194 /* port_insert_member */ 195 196 typedef struct { 197 mach_msg_header_t req_msgh; 198 mach_ndr_record_t req_ndr; 199 mach_port_name_t req_name; 200 mach_port_name_t req_pset; 201 } mach_port_insert_member_request_t; 202 203 typedef struct { 204 mach_msg_header_t rep_msgh; 205 mach_ndr_record_t rep_ndr; 206 mach_kern_return_t rep_retval; 207 mach_msg_trailer_t rep_trailer; 208 } mach_port_insert_member_reply_t; 209 210 /* port_move_member */ 211 212 typedef struct { 213 mach_msg_header_t req_msgh; 214 mach_ndr_record_t req_ndr; 215 mach_port_name_t req_member; 216 mach_port_name_t req_after; 217 } mach_port_move_member_request_t; 218 219 typedef struct { 220 mach_msg_header_t rep_msgh; 221 mach_ndr_record_t rep_ndr; 222 mach_kern_return_t rep_retval; 223 mach_msg_trailer_t rep_trailer; 224 } mach_port_move_member_reply_t; 225 226 /* port_destroy */ 227 228 typedef struct { 229 mach_msg_header_t req_msgh; 230 mach_ndr_record_t req_ndr; 231 mach_port_name_t req_name; 232 } mach_port_destroy_request_t; 233 234 typedef struct { 235 mach_msg_header_t rep_msgh; 236 mach_ndr_record_t rep_ndr; 237 mach_kern_return_t rep_retval; 238 mach_msg_trailer_t rep_trailer; 239 } mach_port_destroy_reply_t; 240 241 /* port_request_notification */ 242 243 typedef struct { 244 mach_msg_header_t req_msgh; 245 mach_msg_body_t req_body; 246 mach_msg_port_descriptor_t req_notify; 247 mach_ndr_record_t req_ndr; 248 mach_port_name_t req_name; 249 mach_msg_id_t req_msgid; 250 mach_port_mscount_t req_count; 251 } mach_port_request_notification_request_t; 252 253 typedef struct { 254 mach_msg_header_t rep_msgh; 255 mach_msg_body_t rep_body; 256 mach_msg_port_descriptor_t rep_previous; 257 mach_msg_trailer_t rep_trailer; 258 } mach_port_request_notification_reply_t; 259 260 /* port_get_refs */ 261 262 typedef struct { 263 mach_msg_header_t req_msgh; 264 mach_ndr_record_t req_ndr; 265 mach_port_name_t req_name; 266 mach_port_right_t req_right; 267 } mach_port_get_refs_request_t; 268 269 typedef struct { 270 mach_msg_header_t rep_msgh; 271 mach_ndr_record_t rep_ndr; 272 mach_kern_return_t rep_retval; 273 mach_port_urefs_t rep_refs; 274 mach_msg_trailer_t rep_trailer; 275 } mach_port_get_refs_reply_t; 276 277 /* port_mod_refs */ 278 279 typedef struct { 280 mach_msg_header_t req_msgh; 281 mach_ndr_record_t req_ndr; 282 mach_port_name_t req_name; 283 mach_port_right_t req_right; 284 mach_port_delta_t req_delta; 285 } mach_port_mod_refs_request_t; 286 287 typedef struct { 288 mach_msg_header_t rep_msgh; 289 mach_ndr_record_t rep_ndr; 290 mach_kern_return_t rep_retval; 291 mach_msg_trailer_t rep_trailer; 292 } mach_port_mod_refs_reply_t; 293 294 /* Kernel-private structures */ 295 296 extern struct mach_port *mach_clock_port; 297 extern struct mach_port *mach_io_master_port; 298 extern struct mach_port *mach_bootstrap_port; 299 extern struct mach_port *mach_saved_bootstrap_port; 300 301 /* In-kernel Mach port right description */ 302 struct mach_right { 303 mach_port_t mr_name; /* The right name */ 304 struct lwp *mr_lwp; /* points back to struct lwp */ 305 int mr_type; /* right type (recv, send, sendonce) */ 306 LIST_ENTRY(mach_right) mr_list; /* Right list for a process */ 307 int mr_refcount; /* Reference count */ 308 struct mach_right *mr_notify_destroyed; /* notify destroyed */ 309 struct mach_right *mr_notify_dead_name; /* notify dead name */ 310 struct mach_right *mr_notify_no_senders; /* notify no senders */ 311 312 /* Revelant only if the right is on a port set */ 313 LIST_HEAD(mr_set, mach_right) mr_set; 314 /* The right set list */ 315 316 /* Revelant only if the right is not on a port set */ 317 struct mach_port *mr_port; /* Port we have the right on */ 318 LIST_ENTRY(mach_right) mr_setlist; /* Set list */ 319 320 /* Revelant only if the right is part of a port set */ 321 struct mach_right *mr_sethead; /* Points back to right set */ 322 }; 323 324 mach_port_t mach_right_newname(struct lwp *, mach_port_t); 325 struct mach_right *mach_right_get(struct mach_port *, 326 struct lwp *, int, mach_port_t); 327 void mach_right_put(struct mach_right *, int); 328 void mach_right_put_shlocked(struct mach_right *, int); 329 void mach_right_put_exclocked(struct mach_right *, int); 330 struct mach_right *mach_right_check(mach_port_t, struct lwp *, int); 331 332 /* In-kernel Mach port description */ 333 struct mach_port { 334 struct mach_right *mp_recv; /* The receive right on this port */ 335 int mp_count; /* Count of queued messages */ 336 TAILQ_HEAD(mp_msglist, /* Queue pending messages */ 337 mach_message) mp_msglist; 338 struct lock mp_msglock; /* Lock for the queue */ 339 int mp_refcount; /* Reference count */ 340 int mp_flags; /* Flags, see below */ 341 int mp_datatype; /* Type of field mp_data, see below */ 342 void *mp_data; /* Data attached to the port */ 343 }; 344 345 /* mp_flags for struct mach_port */ 346 #define MACH_MP_INKERNEL 0x01 /* Receiver is inside the kernel */ 347 #define MACH_MP_DATA_ALLOCATED 0x02 /* mp_data was malloc'ed */ 348 349 /* mp_datatype for struct mach_port */ 350 #define MACH_MP_NONE 0x0 /* No data */ 351 #define MACH_MP_LWP 0x1 /* (struct lwp *) */ 352 #define MACH_MP_DEVICE_ITERATOR 0x2 /* (struct mach_device_iterator *) */ 353 #define MACH_MP_IOKIT_DEVCLASS 0x3 /* (struct mach_iokit_devclass *) */ 354 #define MACH_MP_PROC 0x4 /* (struct proc *) */ 355 #define MACH_MP_NOTIFY_SYNC 0x5 /* int */ 356 #define MACH_MP_MEMORY_ENTRY 0x6 /* (struct mach_memory_entry *) */ 357 #define MACH_MP_EXC_INFO 0x7 /* (struct mach_exc_info *) */ 358 #define MACH_MP_SEMAPHORE 0x8 /* (struct mach_semaphore *) */ 359 360 void mach_port_init(void); 361 struct mach_port *mach_port_get(void); 362 void mach_port_put(struct mach_port *); 363 void mach_remove_recvport(struct mach_port *); 364 void mach_add_recvport(struct mach_port *, struct lwp *); 365 int mach_port_check(struct mach_port *); 366 #ifdef DEBUG_MACH 367 void mach_debug_port(void); 368 #endif 369 370 #endif /* _MACH_PORT_H_ */
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