| | 1 | /* |
| | 2 | * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 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. |
| | 14 | * |
| | 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 |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 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. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * @OSF_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: ipc/ipc_pset.h |
| | 60 | * Author: Rich Draves |
| | 61 | * Date: 1989 |
| | 62 | * |
| | 63 | * Definitions for port sets. |
| | 64 | */ |
| | 65 | |
| | 66 | #ifndef _IPC_IPC_PSET_H_ |
| | 67 | #define _IPC_IPC_PSET_H_ |
| | 68 | |
| | 69 | #include <mach/mach_types.h> |
| | 70 | #include <mach/port.h> |
| | 71 | #include <mach/kern_return.h> |
| | 72 | #include <kern/kern_types.h> |
| | 73 | #include <ipc/ipc_types.h> |
| | 74 | #include <ipc/ipc_object.h> |
| | 75 | #include <ipc/ipc_mqueue.h> |
| | 76 | |
| | 77 | struct ipc_pset { |
| | 78 | /* |
| | 79 | * Initial sub-structure in common with all ipc_objects. |
| | 80 | */ |
| | 81 | struct ipc_object ips_object; |
| | 82 | struct ipc_mqueue ips_messages; |
| | 83 | }; |
| | 84 | |
| | 85 | #define ips_references ips_object.io_references |
| | 86 | |
| | 87 | #define ips_object_to_pset(io) __container_of(io, struct ipc_pset, ips_object) |
| | 88 | #define ips_to_object(pset) (&(pset)->ips_object) |
| | 89 | #define ips_active(pset) io_active(ips_to_object(pset)) |
| | 90 | #define ips_lock(pset) io_lock(ips_to_object(pset)) |
| | 91 | #define ips_lock_try(pset) io_lock_try(ips_to_object(pset)) |
| | 92 | #define ips_lock_held_kdp(pset) io_lock_held_kdp(ips_to_object(pset)) |
| | 93 | #define ips_unlock(pset) io_unlock(ips_to_object(pset)) |
| | 94 | #define ips_reference(pset) io_reference(ips_to_object(pset)) |
| | 95 | #define ips_release(pset) io_release(ips_to_object(pset)) |
| | 96 | |
| | 97 | /* get an ipc_pset pointer from an ipc_mqueue pointer */ |
| | 98 | #define ips_from_mq(mq) \ |
| | 99 | __container_of(mq, struct ipc_pset, ips_messages) |
| | 100 | |
| | 101 | /* Allocate a port set */ |
| | 102 | extern kern_return_t ipc_pset_alloc( |
| | 103 | ipc_space_t space, |
| | 104 | mach_port_name_t *namep, |
| | 105 | ipc_pset_t *psetp); |
| | 106 | |
| | 107 | /* Allocate a port set, with a specific name */ |
| | 108 | extern kern_return_t ipc_pset_alloc_name( |
| | 109 | ipc_space_t space, |
| | 110 | mach_port_name_t name, |
| | 111 | ipc_pset_t *psetp); |
| | 112 | |
| | 113 | /* Allocate a port set in a special space */ |
| | 114 | extern ipc_pset_t ipc_pset_alloc_special( |
| | 115 | ipc_space_t space); |
| | 116 | |
| | 117 | /* Add a port to a port set */ |
| | 118 | extern kern_return_t ipc_pset_add( |
| | 119 | ipc_pset_t pset, |
| | 120 | ipc_port_t port, |
| | 121 | uint64_t *reserved_link, |
| | 122 | uint64_t *reserved_prepost); |
| | 123 | |
| | 124 | /* determine if port is a member of set */ |
| | 125 | extern boolean_t ipc_pset_member( |
| | 126 | ipc_pset_t pset, |
| | 127 | ipc_port_t port); |
| | 128 | |
| | 129 | /* Remove a port from a port set */ |
| | 130 | extern kern_return_t ipc_pset_remove( |
| | 131 | ipc_pset_t pset, |
| | 132 | ipc_port_t port); |
| | 133 | |
| | 134 | /* lazily initialize the wqset of a port set */ |
| | 135 | extern kern_return_t ipc_pset_lazy_allocate( |
| | 136 | ipc_space_t space, |
| | 137 | mach_port_name_t psname); |
| | 138 | |
| | 139 | /* Remove a port from all its current port sets */ |
| | 140 | extern kern_return_t ipc_pset_remove_from_all( |
| | 141 | ipc_port_t port); |
| | 142 | |
| | 143 | /* Destroy a port_set */ |
| | 144 | extern void ipc_pset_destroy( |
| | 145 | ipc_space_t space, |
| | 146 | ipc_pset_t pset); |
| | 147 | |
| | 148 | #if MACH_KERNEL_PRIVATE |
| | 149 | extern struct turnstile *filt_ipc_kqueue_turnstile( |
| | 150 | struct knote *kn); |
| | 151 | bool |
| | 152 | filt_machport_kqueue_has_turnstile( |
| | 153 | struct knote *kn); |
| | 154 | |
| | 155 | extern void filt_machport_turnstile_prepare_lazily( |
| | 156 | struct knote *kn, |
| | 157 | mach_msg_type_name_t msgt_name, |
| | 158 | ipc_port_t port); |
| | 159 | |
| | 160 | extern struct turnstile *filt_machport_stash_port( |
| | 161 | struct knote *kn, |
| | 162 | ipc_port_t port, |
| | 163 | int *link); |
| | 164 | #endif |
| | 165 | |
| | 166 | #endif /* _IPC_IPC_PSET_H_ */ |
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