196 lines
6.1 KiB
C
196 lines
6.1 KiB
C
/* $NetBSD: mach_notify.c,v 1.2 2003/04/05 19:27:51 manu Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mach_notify.c,v 1.2 2003/04/05 19:27:51 manu Exp $");
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#include "opt_ktrace.h"
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#include "opt_compat_mach.h" /* For COMPAT_MACH in <sys/ktrace.h> */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/signal.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#ifdef KTRACE
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#include <sys/ktrace.h>
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#endif
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#include <compat/mach/mach_types.h>
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#include <compat/mach/mach_exec.h>
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#include <compat/mach/mach_notify.h>
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void
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mach_notify_port_destroyed(l, mr)
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struct lwp *l;
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struct mach_right *mr;
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{
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struct mach_port *mp;
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mach_notify_port_destroyed_request_t *req;
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if (mr->mr_notify_destroyed == NULL)
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return;
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mp = mr->mr_notify_destroyed->mr_port;
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#ifdef DEBUG_MACH
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if (mp == NULL) {
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printf("Warning: notification right without a port\n");
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return;
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}
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#endif
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req = malloc(sizeof(*req), M_EMULDATA, M_WAITOK | M_ZERO);
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req->req_msgh.msgh_bits =
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MACH_MSGH_REPLY_LOCAL_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE);
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req->req_msgh.msgh_size = sizeof(*req) - sizeof(req->req_trailer);
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req->req_msgh.msgh_local_port = mr->mr_notify_destroyed->mr_name;
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req->req_msgh.msgh_id= MACH_NOTIFY_DESTROYED_MSGID;
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req->req_body.msgh_descriptor_count = 1;
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req->req_rights.name = mr->mr_name;
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req->req_trailer.msgh_trailer_size = 8;
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#ifdef KTRACE
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ktruser(l->l_proc, "notify_port_destroyed", NULL, 0, 0);
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#endif
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(void)mach_message_get((mach_msg_header_t *)req, sizeof(*req), mp, l);
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#ifdef DEBUG_MACH_MSG
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printf("pid %d: message queued on port %p (%d) [%p]\n",
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l->l_proc->p_pid, mp, req->req_msgh.msgh_id,
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mp->mp_recv->mr_sethead);
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#endif
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wakeup(mp->mp_recv->mr_sethead);
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return;
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}
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void
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mach_notify_port_no_senders(l, mr)
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struct lwp *l;
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struct mach_right *mr;
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{
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struct mach_port *mp;
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mach_notify_port_no_senders_request_t *req;
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if ((mr->mr_notify_no_senders == NULL) ||
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(mr->mr_notify_no_senders->mr_port == NULL))
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return;
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mp = mr->mr_notify_no_senders->mr_port;
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#ifdef DEBUG_MACH
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if ((mp == NULL) || (mp->mp_datatype != MACH_MP_NOTIFY_SYNC)) {
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printf("Warning: notification right without a port\n");
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return;
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}
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#endif
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if ((int)mp->mp_data >= mr->mr_refcount)
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return;
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req = malloc(sizeof(*req), M_EMULDATA, M_WAITOK | M_ZERO);
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req->req_msgh.msgh_bits =
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MACH_MSGH_REPLY_LOCAL_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE);
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req->req_msgh.msgh_size = sizeof(*req) - sizeof(req->req_trailer);
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req->req_msgh.msgh_local_port = mr->mr_notify_no_senders->mr_name;
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req->req_msgh.msgh_id= MACH_NOTIFY_NO_SENDERS_MSGID;
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req->req_mscount = mr->mr_refcount;
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req->req_trailer.msgh_trailer_size = 8;
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#ifdef KTRACE
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ktruser(l->l_proc, "notify_port_no_senders", NULL, 0, 0);
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#endif
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(void)mach_message_get((mach_msg_header_t *)req, sizeof(*req), mp, l);
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#ifdef DEBUG_MACH_MSG
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printf("pid %d: message queued on port %p (%d) [%p]\n",
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l->l_proc->p_pid, mp, req->req_msgh.msgh_id,
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mp->mp_recv->mr_sethead);
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#endif
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wakeup(mp->mp_recv->mr_sethead);
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return;
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}
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void
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mach_notify_port_dead_name(l, mr)
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struct lwp *l;
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struct mach_right *mr;
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{
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struct mach_port *mp;
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mach_notify_port_dead_name_request_t *req;
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if ((mr->mr_notify_dead_name == NULL) ||
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(mr->mr_notify_dead_name->mr_port == NULL))
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return;
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mp = mr->mr_notify_no_senders->mr_port;
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#ifdef DEBUG_MACH
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if (mp == NULL) {
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printf("Warning: notification right without a port\n");
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return;
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}
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#endif
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req = malloc(sizeof(*req), M_EMULDATA, M_WAITOK | M_ZERO);
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req->req_msgh.msgh_bits =
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MACH_MSGH_REPLY_LOCAL_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE);
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req->req_msgh.msgh_size = sizeof(*req) - sizeof(req->req_trailer);
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req->req_msgh.msgh_local_port = mr->mr_notify_dead_name->mr_name;
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req->req_msgh.msgh_id= MACH_NOTIFY_DEAD_NAME_MSGID;
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req->req_name = mr->mr_name;
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req->req_trailer.msgh_trailer_size = 8;
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#ifdef KTRACE
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ktruser(l->l_proc, "notify_port_dead_name", NULL, 0, 0);
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#endif
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mr->mr_refcount++;
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mp = mr->mr_notify_dead_name->mr_port;
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(void)mach_message_get((mach_msg_header_t *)req, sizeof(*req), mp, l);
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#ifdef DEBUG_MACH_MSG
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printf("pid %d: message queued on port %p (%d) [%p]\n",
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l->l_proc->p_pid, mp, req->req_msgh.msgh_id,
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mp->mp_recv->mr_sethead);
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#endif
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wakeup(mp->mp_recv->mr_sethead);
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return;
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}
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