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Annotation of OSKit-Mach/ipc/ipc_notify.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  *
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  *
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  *
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  *
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     File:   ipc/ipc_notify.c
        !            28:  *     Author: Rich Draves
        !            29:  *     Date:   1989
        !            30:  *
        !            31:  *     Notification-sending functions.
        !            32:  */
        !            33: 
        !            34: #include <mach_ipc_compat.h>
        !            35: 
        !            36: #include <mach/port.h>
        !            37: #include <mach/message.h>
        !            38: #include <mach/notify.h>
        !            39: #include <kern/assert.h>
        !            40: #include <ipc/ipc_kmsg.h>
        !            41: #include <ipc/ipc_mqueue.h>
        !            42: #include <ipc/ipc_notify.h>
        !            43: #include <ipc/ipc_port.h>
        !            44: 
        !            45: #include <ipc/ipc_machdep.h>
        !            46: 
        !            47: mach_port_deleted_notification_t       ipc_notify_port_deleted_template;
        !            48: mach_msg_accepted_notification_t       ipc_notify_msg_accepted_template;
        !            49: mach_port_destroyed_notification_t     ipc_notify_port_destroyed_template;
        !            50: mach_no_senders_notification_t         ipc_notify_no_senders_template;
        !            51: mach_send_once_notification_t          ipc_notify_send_once_template;
        !            52: mach_dead_name_notification_t          ipc_notify_dead_name_template;
        !            53: 
        !            54: #if    MACH_IPC_COMPAT
        !            55: /*
        !            56:  *     When notification messages are received via the old
        !            57:  *     msg_receive trap, the msg_type field should contain
        !            58:  *     MSG_TYPE_EMERGENCY.  We arrange for this by putting
        !            59:  *     MSG_TYPE_EMERGENCY into msgh_seqno, which
        !            60:  *     ipc_kmsg_copyout_compat copies to msg_type.
        !            61:  */
        !            62: 
        !            63: #define NOTIFY_MSGH_SEQNO      MSG_TYPE_EMERGENCY
        !            64: #else  /* MACH_IPC_COMPAT */
        !            65: #define NOTIFY_MSGH_SEQNO      0
        !            66: #endif /* MACH_IPC_COMPAT */
        !            67: 
        !            68: /*
        !            69:  *     Routine:        ipc_notify_init_port_deleted
        !            70:  *     Purpose:
        !            71:  *             Initialize a template for port-deleted notifications.
        !            72:  */
        !            73: 
        !            74: void
        !            75: ipc_notify_init_port_deleted(n)
        !            76:        mach_port_deleted_notification_t *n;
        !            77: {
        !            78:        mach_msg_header_t *m = &n->not_header;
        !            79:        mach_msg_type_t *t = &n->not_type;
        !            80: 
        !            81:        m->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !            82:        m->msgh_size = sizeof *n;
        !            83:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !            84:        m->msgh_local_port = MACH_PORT_NULL;
        !            85:        m->msgh_remote_port = MACH_PORT_NULL;
        !            86:        m->msgh_id = MACH_NOTIFY_PORT_DELETED;
        !            87: 
        !            88:        t->msgt_name = MACH_MSG_TYPE_PORT_NAME;
        !            89:        t->msgt_size = PORT_T_SIZE_IN_BITS;
        !            90:        t->msgt_number = 1;
        !            91:        t->msgt_inline = TRUE;
        !            92:        t->msgt_longform = FALSE;
        !            93:        t->msgt_deallocate = FALSE;
        !            94:        t->msgt_unused = 0;
        !            95: 
        !            96:        n->not_port = MACH_PORT_NULL;
        !            97: }
        !            98: 
        !            99: /*
        !           100:  *     Routine:        ipc_notify_init_msg_accepted
        !           101:  *     Purpose:
        !           102:  *             Initialize a template for msg-accepted notifications.
        !           103:  */
        !           104: 
        !           105: void
        !           106: ipc_notify_init_msg_accepted(n)
        !           107:        mach_msg_accepted_notification_t *n;
        !           108: {
        !           109:        mach_msg_header_t *m = &n->not_header;
        !           110:        mach_msg_type_t *t = &n->not_type;
        !           111: 
        !           112:        m->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !           113:        m->msgh_size = sizeof *n;
        !           114:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !           115:        m->msgh_local_port = MACH_PORT_NULL;
        !           116:        m->msgh_remote_port = MACH_PORT_NULL;
        !           117:        m->msgh_id = MACH_NOTIFY_MSG_ACCEPTED;
        !           118: 
        !           119:        t->msgt_name = MACH_MSG_TYPE_PORT_NAME;
        !           120:        t->msgt_size = PORT_T_SIZE_IN_BITS;
        !           121:        t->msgt_number = 1;
        !           122:        t->msgt_inline = TRUE;
        !           123:        t->msgt_longform = FALSE;
        !           124:        t->msgt_deallocate = FALSE;
        !           125:        t->msgt_unused = 0;
        !           126: 
        !           127:        n->not_port = MACH_PORT_NULL;
        !           128: }
        !           129: 
        !           130: /*
        !           131:  *     Routine:        ipc_notify_init_port_destroyed
        !           132:  *     Purpose:
        !           133:  *             Initialize a template for port-destroyed notifications.
        !           134:  */
        !           135: 
        !           136: void
        !           137: ipc_notify_init_port_destroyed(
        !           138:        mach_port_destroyed_notification_t      *n)
        !           139: {
        !           140:        mach_msg_header_t *m = &n->not_header;
        !           141:        mach_msg_type_t *t = &n->not_type;
        !           142: 
        !           143:        m->msgh_bits = MACH_MSGH_BITS_COMPLEX |
        !           144:                MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !           145:        m->msgh_size = sizeof *n;
        !           146:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !           147:        m->msgh_local_port = MACH_PORT_NULL;
        !           148:        m->msgh_remote_port = MACH_PORT_NULL;
        !           149:        m->msgh_id = MACH_NOTIFY_PORT_DESTROYED;
        !           150: 
        !           151:        t->msgt_name = MACH_MSG_TYPE_PORT_RECEIVE;
        !           152:        t->msgt_size = PORT_T_SIZE_IN_BITS;
        !           153:        t->msgt_number = 1;
        !           154:        t->msgt_inline = TRUE;
        !           155:        t->msgt_longform = FALSE;
        !           156:        t->msgt_deallocate = FALSE;
        !           157:        t->msgt_unused = 0;
        !           158: 
        !           159:        n->not_port = MACH_PORT_NULL;
        !           160: }
        !           161: 
        !           162: /*
        !           163:  *     Routine:        ipc_notify_init_no_senders
        !           164:  *     Purpose:
        !           165:  *             Initialize a template for no-senders notifications.
        !           166:  */
        !           167: 
        !           168: void
        !           169: ipc_notify_init_no_senders(
        !           170:        mach_no_senders_notification_t  *n)
        !           171: {
        !           172:        mach_msg_header_t *m = &n->not_header;
        !           173:        mach_msg_type_t *t = &n->not_type;
        !           174: 
        !           175:        m->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !           176:        m->msgh_size = sizeof *n;
        !           177:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !           178:        m->msgh_local_port = MACH_PORT_NULL;
        !           179:        m->msgh_remote_port = MACH_PORT_NULL;
        !           180:        m->msgh_id = MACH_NOTIFY_NO_SENDERS;
        !           181: 
        !           182:        t->msgt_name = MACH_MSG_TYPE_INTEGER_32;
        !           183:        t->msgt_size = PORT_T_SIZE_IN_BITS;
        !           184:        t->msgt_number = 1;
        !           185:        t->msgt_inline = TRUE;
        !           186:        t->msgt_longform = FALSE;
        !           187:        t->msgt_deallocate = FALSE;
        !           188:        t->msgt_unused = 0;
        !           189: 
        !           190:        n->not_count = 0;
        !           191: }
        !           192: 
        !           193: /*
        !           194:  *     Routine:        ipc_notify_init_send_once
        !           195:  *     Purpose:
        !           196:  *             Initialize a template for send-once notifications.
        !           197:  */
        !           198: 
        !           199: void
        !           200: ipc_notify_init_send_once(
        !           201:        mach_send_once_notification_t   *n)
        !           202: {
        !           203:        mach_msg_header_t *m = &n->not_header;
        !           204: 
        !           205:        m->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !           206:        m->msgh_size = sizeof *n;
        !           207:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !           208:        m->msgh_local_port = MACH_PORT_NULL;
        !           209:        m->msgh_remote_port = MACH_PORT_NULL;
        !           210:        m->msgh_id = MACH_NOTIFY_SEND_ONCE;
        !           211: }
        !           212: 
        !           213: /*
        !           214:  *     Routine:        ipc_notify_init_dead_name
        !           215:  *     Purpose:
        !           216:  *             Initialize a template for dead-name notifications.
        !           217:  */
        !           218: 
        !           219: void
        !           220: ipc_notify_init_dead_name(
        !           221:        mach_dead_name_notification_t   *n)
        !           222: {
        !           223:        mach_msg_header_t *m = &n->not_header;
        !           224:        mach_msg_type_t *t = &n->not_type;
        !           225: 
        !           226:        m->msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, 0);
        !           227:        m->msgh_size = sizeof *n;
        !           228:        m->msgh_seqno = NOTIFY_MSGH_SEQNO;
        !           229:        m->msgh_local_port = MACH_PORT_NULL;
        !           230:        m->msgh_remote_port = MACH_PORT_NULL;
        !           231:        m->msgh_id = MACH_NOTIFY_DEAD_NAME;
        !           232: 
        !           233:        t->msgt_name = MACH_MSG_TYPE_PORT_NAME;
        !           234:        t->msgt_size = PORT_T_SIZE_IN_BITS;
        !           235:        t->msgt_number = 1;
        !           236:        t->msgt_inline = TRUE;
        !           237:        t->msgt_longform = FALSE;
        !           238:        t->msgt_deallocate = FALSE;
        !           239:        t->msgt_unused = 0;
        !           240: 
        !           241:        n->not_port = MACH_PORT_NULL;
        !           242: }
        !           243: 
        !           244: /*
        !           245:  *     Routine:        ipc_notify_init
        !           246:  *     Purpose:
        !           247:  *             Initialize the notification subsystem.
        !           248:  */
        !           249: 
        !           250: void
        !           251: ipc_notify_init(void)
        !           252: {
        !           253:        ipc_notify_init_port_deleted(&ipc_notify_port_deleted_template);
        !           254:        ipc_notify_init_msg_accepted(&ipc_notify_msg_accepted_template);
        !           255:        ipc_notify_init_port_destroyed(&ipc_notify_port_destroyed_template);
        !           256:        ipc_notify_init_no_senders(&ipc_notify_no_senders_template);
        !           257:        ipc_notify_init_send_once(&ipc_notify_send_once_template);
        !           258:        ipc_notify_init_dead_name(&ipc_notify_dead_name_template);
        !           259: }
        !           260: 
        !           261: /*
        !           262:  *     Routine:        ipc_notify_port_deleted
        !           263:  *     Purpose:
        !           264:  *             Send a port-deleted notification.
        !           265:  *     Conditions:
        !           266:  *             Nothing locked.
        !           267:  *             Consumes a ref/soright for port.
        !           268:  */
        !           269: 
        !           270: void
        !           271: ipc_notify_port_deleted(port, name)
        !           272:        ipc_port_t port;
        !           273:        mach_port_t name;
        !           274: {
        !           275:        ipc_kmsg_t kmsg;
        !           276:        mach_port_deleted_notification_t *n;
        !           277: 
        !           278:        kmsg = ikm_alloc(sizeof *n);
        !           279:        if (kmsg == IKM_NULL) {
        !           280:                printf("dropped port-deleted (0x%08x, 0x%x)\n", port, name);
        !           281:                ipc_port_release_sonce(port);
        !           282:                return;
        !           283:        }
        !           284: 
        !           285:        ikm_init(kmsg, sizeof *n);
        !           286:        n = (mach_port_deleted_notification_t *) &kmsg->ikm_header;
        !           287:        *n = ipc_notify_port_deleted_template;
        !           288: 
        !           289:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           290:        n->not_port = name;
        !           291: 
        !           292:        ipc_mqueue_send_always(kmsg);
        !           293: }
        !           294: 
        !           295: /*
        !           296:  *     Routine:        ipc_notify_msg_accepted
        !           297:  *     Purpose:
        !           298:  *             Send a msg-accepted notification.
        !           299:  *     Conditions:
        !           300:  *             Nothing locked.
        !           301:  *             Consumes a ref/soright for port.
        !           302:  */
        !           303: 
        !           304: void
        !           305: ipc_notify_msg_accepted(port, name)
        !           306:        ipc_port_t port;
        !           307:        mach_port_t name;
        !           308: {
        !           309:        ipc_kmsg_t kmsg;
        !           310:        mach_msg_accepted_notification_t *n;
        !           311: 
        !           312:        kmsg = ikm_alloc(sizeof *n);
        !           313:        if (kmsg == IKM_NULL) {
        !           314:                printf("dropped msg-accepted (0x%08x, 0x%x)\n", port, name);
        !           315:                ipc_port_release_sonce(port);
        !           316:                return;
        !           317:        }
        !           318: 
        !           319:        ikm_init(kmsg, sizeof *n);
        !           320:        n = (mach_msg_accepted_notification_t *) &kmsg->ikm_header;
        !           321:        *n = ipc_notify_msg_accepted_template;
        !           322: 
        !           323:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           324:        n->not_port = name;
        !           325: 
        !           326:        ipc_mqueue_send_always(kmsg);
        !           327: }
        !           328: 
        !           329: /*
        !           330:  *     Routine:        ipc_notify_port_destroyed
        !           331:  *     Purpose:
        !           332:  *             Send a port-destroyed notification.
        !           333:  *     Conditions:
        !           334:  *             Nothing locked.
        !           335:  *             Consumes a ref/soright for port.
        !           336:  *             Consumes a ref for right, which should be a receive right
        !           337:  *             prepped for placement into a message.  (In-transit,
        !           338:  *             or in-limbo if a circularity was detected.)
        !           339:  */
        !           340: 
        !           341: void
        !           342: ipc_notify_port_destroyed(port, right)
        !           343:        ipc_port_t port;
        !           344:        ipc_port_t right;
        !           345: {
        !           346:        ipc_kmsg_t kmsg;
        !           347:        mach_port_destroyed_notification_t *n;
        !           348: 
        !           349:        kmsg = ikm_alloc(sizeof *n);
        !           350:        if (kmsg == IKM_NULL) {
        !           351:                printf("dropped port-destroyed (0x%08x, 0x%08x)\n",
        !           352:                       port, right);
        !           353:                ipc_port_release_sonce(port);
        !           354:                ipc_port_release_receive(right);
        !           355:                return;
        !           356:        }
        !           357: 
        !           358:        ikm_init(kmsg, sizeof *n);
        !           359:        n = (mach_port_destroyed_notification_t *) &kmsg->ikm_header;
        !           360:        *n = ipc_notify_port_destroyed_template;
        !           361: 
        !           362:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           363:        n->not_port = (mach_port_t) right;
        !           364: 
        !           365:        ipc_mqueue_send_always(kmsg);
        !           366: }
        !           367: 
        !           368: /*
        !           369:  *     Routine:        ipc_notify_no_senders
        !           370:  *     Purpose:
        !           371:  *             Send a no-senders notification.
        !           372:  *     Conditions:
        !           373:  *             Nothing locked.
        !           374:  *             Consumes a ref/soright for port.
        !           375:  */
        !           376: 
        !           377: void
        !           378: ipc_notify_no_senders(port, mscount)
        !           379:        ipc_port_t port;
        !           380:        mach_port_mscount_t mscount;
        !           381: {
        !           382:        ipc_kmsg_t kmsg;
        !           383:        mach_no_senders_notification_t *n;
        !           384: 
        !           385: #if    NORMA_IPC
        !           386:        if (ip_nsproxyp(port)) {
        !           387:                assert(mscount == 0);
        !           388:                norma_ipc_notify_no_senders(ip_nsproxy(port));
        !           389:                return;
        !           390:        }
        !           391: #endif /* NORMA_IPC */
        !           392:        kmsg = ikm_alloc(sizeof *n);
        !           393:        if (kmsg == IKM_NULL) {
        !           394:                printf("dropped no-senders (0x%08x, %u)\n", port, mscount);
        !           395:                ipc_port_release_sonce(port);
        !           396:                return;
        !           397:        }
        !           398: 
        !           399:        ikm_init(kmsg, sizeof *n);
        !           400:        n = (mach_no_senders_notification_t *) &kmsg->ikm_header;
        !           401:        *n = ipc_notify_no_senders_template;
        !           402: 
        !           403:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           404:        n->not_count = mscount;
        !           405: 
        !           406:        ipc_mqueue_send_always(kmsg);
        !           407: }
        !           408: 
        !           409: /*
        !           410:  *     Routine:        ipc_notify_send_once
        !           411:  *     Purpose:
        !           412:  *             Send a send-once notification.
        !           413:  *     Conditions:
        !           414:  *             Nothing locked.
        !           415:  *             Consumes a ref/soright for port.
        !           416:  */
        !           417: 
        !           418: void
        !           419: ipc_notify_send_once(port)
        !           420:        ipc_port_t port;
        !           421: {
        !           422:        ipc_kmsg_t kmsg;
        !           423:        mach_send_once_notification_t *n;
        !           424: 
        !           425:        kmsg = ikm_alloc(sizeof *n);
        !           426:        if (kmsg == IKM_NULL) {
        !           427:                printf("dropped send-once (0x%08x)\n", port);
        !           428:                ipc_port_release_sonce(port);
        !           429:                return;
        !           430:        }
        !           431: 
        !           432:        ikm_init(kmsg, sizeof *n);
        !           433:        n = (mach_send_once_notification_t *) &kmsg->ikm_header;
        !           434:        *n = ipc_notify_send_once_template;
        !           435: 
        !           436:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           437: 
        !           438:        ipc_mqueue_send_always(kmsg);
        !           439: }
        !           440: 
        !           441: /*
        !           442:  *     Routine:        ipc_notify_dead_name
        !           443:  *     Purpose:
        !           444:  *             Send a dead-name notification.
        !           445:  *     Conditions:
        !           446:  *             Nothing locked.
        !           447:  *             Consumes a ref/soright for port.
        !           448:  */
        !           449: 
        !           450: void
        !           451: ipc_notify_dead_name(port, name)
        !           452:        ipc_port_t port;
        !           453:        mach_port_t name;
        !           454: {
        !           455:        ipc_kmsg_t kmsg;
        !           456:        mach_dead_name_notification_t *n;
        !           457: 
        !           458:        kmsg = ikm_alloc(sizeof *n);
        !           459:        if (kmsg == IKM_NULL) {
        !           460:                printf("dropped dead-name (0x%08x, 0x%x)\n", port, name);
        !           461:                ipc_port_release_sonce(port);
        !           462:                return;
        !           463:        }
        !           464: 
        !           465:        ikm_init(kmsg, sizeof *n);
        !           466:        n = (mach_dead_name_notification_t *) &kmsg->ikm_header;
        !           467:        *n = ipc_notify_dead_name_template;
        !           468: 
        !           469:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           470:        n->not_port = name;
        !           471: 
        !           472:        ipc_mqueue_send_always(kmsg);
        !           473: }
        !           474: 
        !           475: #if    MACH_IPC_COMPAT
        !           476: 
        !           477: /*
        !           478:  *     Routine:        ipc_notify_port_deleted_compat
        !           479:  *     Purpose:
        !           480:  *             Send a port-deleted notification.
        !           481:  *             Sends it to a send right instead of a send-once right.
        !           482:  *     Conditions:
        !           483:  *             Nothing locked.
        !           484:  *             Consumes a ref/sright for port.
        !           485:  */
        !           486: 
        !           487: void
        !           488: ipc_notify_port_deleted_compat(port, name)
        !           489:        ipc_port_t port;
        !           490:        mach_port_t name;
        !           491: {
        !           492:        ipc_kmsg_t kmsg;
        !           493:        mach_port_deleted_notification_t *n;
        !           494: 
        !           495:        kmsg = ikm_alloc(sizeof *n);
        !           496:        if (kmsg == IKM_NULL) {
        !           497:                printf("dropped port-deleted-compat (0x%08x, 0x%x)\n",
        !           498:                       port, name);
        !           499:                ipc_port_release_send(port);
        !           500:                return;
        !           501:        }
        !           502: 
        !           503:        ikm_init(kmsg, sizeof *n);
        !           504:        n = (mach_port_deleted_notification_t *) &kmsg->ikm_header;
        !           505:        *n = ipc_notify_port_deleted_template;
        !           506: 
        !           507:        n->not_header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND, 0);
        !           508:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           509:        n->not_port = name;
        !           510: 
        !           511:        ipc_mqueue_send_always(kmsg);
        !           512: }
        !           513: 
        !           514: /*
        !           515:  *     Routine:        ipc_notify_msg_accepted_compat
        !           516:  *     Purpose:
        !           517:  *             Send a msg-accepted notification.
        !           518:  *             Sends it to a send right instead of a send-once right.
        !           519:  *     Conditions:
        !           520:  *             Nothing locked.
        !           521:  *             Consumes a ref/sright for port.
        !           522:  */
        !           523: 
        !           524: void
        !           525: ipc_notify_msg_accepted_compat(port, name)
        !           526:        ipc_port_t port;
        !           527:        mach_port_t name;
        !           528: {
        !           529:        ipc_kmsg_t kmsg;
        !           530:        mach_msg_accepted_notification_t *n;
        !           531: 
        !           532:        kmsg = ikm_alloc(sizeof *n);
        !           533:        if (kmsg == IKM_NULL) {
        !           534:                printf("dropped msg-accepted-compat (0x%08x, 0x%x)\n",
        !           535:                       port, name);
        !           536:                ipc_port_release_send(port);
        !           537:                return;
        !           538:        }
        !           539: 
        !           540:        ikm_init(kmsg, sizeof *n);
        !           541:        n = (mach_msg_accepted_notification_t *) &kmsg->ikm_header;
        !           542:        *n = ipc_notify_msg_accepted_template;
        !           543: 
        !           544:        n->not_header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND, 0);
        !           545:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           546:        n->not_port = name;
        !           547: 
        !           548:        ipc_mqueue_send_always(kmsg);
        !           549: }
        !           550: 
        !           551: /*
        !           552:  *     Routine:        ipc_notify_port_destroyed_compat
        !           553:  *     Purpose:
        !           554:  *             Send a port-destroyed notification.
        !           555:  *             Sends it to a send right instead of a send-once right.
        !           556:  *     Conditions:
        !           557:  *             Nothing locked.
        !           558:  *             Consumes a ref/sright for port.
        !           559:  *             Consumes a ref for right, which should be a receive right
        !           560:  *             prepped for placement into a message.  (In-transit,
        !           561:  *             or in-limbo if a circularity was detected.)
        !           562:  */
        !           563: 
        !           564: void
        !           565: ipc_notify_port_destroyed_compat(port, right)
        !           566:        ipc_port_t port;
        !           567:        ipc_port_t right;
        !           568: {
        !           569:        ipc_kmsg_t kmsg;
        !           570:        mach_port_destroyed_notification_t *n;
        !           571: 
        !           572:        kmsg = ikm_alloc(sizeof *n);
        !           573:        if (kmsg == IKM_NULL) {
        !           574:                printf("dropped port-destroyed-compat (0x%08x, 0x%08x)\n",
        !           575:                       port, right);
        !           576:                ipc_port_release_send(port);
        !           577:                ipc_port_release_receive(right);
        !           578:                return;
        !           579:        }
        !           580: 
        !           581:        ikm_init(kmsg, sizeof *n);
        !           582:        n = (mach_port_destroyed_notification_t *) &kmsg->ikm_header;
        !           583:        *n = ipc_notify_port_destroyed_template;
        !           584: 
        !           585:        n->not_header.msgh_bits = MACH_MSGH_BITS_COMPLEX |
        !           586:                MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND, 0);
        !           587:        n->not_header.msgh_remote_port = (mach_port_t) port;
        !           588:        n->not_port = (mach_port_t) right;
        !           589: 
        !           590:        ipc_mqueue_send_always(kmsg);
        !           591: }
        !           592: 
        !           593: #endif /* MACH_IPC_COMPAT */

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