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1.1.1.2 ! root 1: /* 1.1 root 2: * Mach Operating System 3: * Copyright (c) 1991,1990,1989 Carnegie Mellon University 4: * All Rights Reserved. 1.1.1.2 ! root 5: * 1.1 root 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. 1.1.1.2 ! root 11: * 1.1 root 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. 1.1.1.2 ! root 15: * 1.1 root 16: * Carnegie Mellon requests users of this software to return to 1.1.1.2 ! root 17: * 1.1 root 18: * Software Distribution Coordinator or [email protected] 19: * School of Computer Science 20: * Carnegie Mellon University 21: * Pittsburgh PA 15213-3890 1.1.1.2 ! root 22: * 1.1 root 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_object.h 28: * Author: Rich Draves 29: * Date: 1989 30: * 31: * Definitions for IPC objects, for which tasks have capabilities. 32: */ 33: 34: #ifndef _IPC_IPC_OBJECT_H_ 35: #define _IPC_IPC_OBJECT_H_ 36: 37: #include <mach_ipc_compat.h> 38: 39: #include <mach/kern_return.h> 40: #include <mach/message.h> 41: #include <kern/lock.h> 42: #include <kern/macro_help.h> 43: #include <kern/zalloc.h> 44: 45: typedef unsigned int ipc_object_refs_t; 46: typedef unsigned int ipc_object_bits_t; 47: typedef unsigned int ipc_object_type_t; 48: 49: typedef struct ipc_object { 50: decl_simple_lock_data(,io_lock_data) 51: ipc_object_refs_t io_references; 52: ipc_object_bits_t io_bits; 53: } *ipc_object_t; 54: 55: #define IO_NULL ((ipc_object_t) 0) 56: #define IO_DEAD ((ipc_object_t) -1) 57: 58: #define IO_VALID(io) (((io) != IO_NULL) && ((io) != IO_DEAD)) 59: 60: #define IO_BITS_KOTYPE 0x0000ffff /* used by the object */ 61: #define IO_BITS_OTYPE 0x7fff0000 /* determines a zone */ 62: #define IO_BITS_ACTIVE 0x80000000U /* is object alive? */ 63: 64: #define io_active(io) ((int)(io)->io_bits < 0) /* hack */ 65: 66: #define io_otype(io) (((io)->io_bits & IO_BITS_OTYPE) >> 16) 67: #define io_kotype(io) ((io)->io_bits & IO_BITS_KOTYPE) 68: 69: #define io_makebits(active, otype, kotype) \ 70: (((active) ? IO_BITS_ACTIVE : 0) | ((otype) << 16) | (kotype)) 71: 72: /* 73: * Object types: ports, port sets, kernel-loaded ports 74: */ 75: #define IOT_PORT 0 76: #define IOT_PORT_SET 1 77: #define IOT_NUMBER 2 /* number of types used */ 78: 79: extern zone_t ipc_object_zones[IOT_NUMBER]; 80: 81: #define io_alloc(otype) \ 82: ((ipc_object_t) zalloc(ipc_object_zones[(otype)])) 83: 84: #define io_free(otype, io) \ 85: zfree(ipc_object_zones[(otype)], (vm_offset_t) (io)) 86: 87: #define io_lock_init(io) simple_lock_init(&(io)->io_lock_data) 88: #define io_lock(io) simple_lock(&(io)->io_lock_data) 89: #define io_lock_try(io) simple_lock_try(&(io)->io_lock_data) 90: #define io_unlock(io) simple_unlock(&(io)->io_lock_data) 91: 92: #define io_check_unlock(io) \ 93: MACRO_BEGIN \ 94: ipc_object_refs_t _refs = (io)->io_references; \ 95: \ 96: io_unlock(io); \ 97: if (_refs == 0) \ 98: io_free(io_otype(io), io); \ 99: MACRO_END 100: 101: #define io_reference(io) \ 102: MACRO_BEGIN \ 103: (io)->io_references++; \ 104: MACRO_END 105: 106: #define io_release(io) \ 107: MACRO_BEGIN \ 108: (io)->io_references--; \ 109: MACRO_END 110: 111: extern void 112: ipc_object_reference(/* ipc_object_t */); 113: 114: extern void 115: ipc_object_release(/* ipc_object_t */); 116: 117: extern kern_return_t 118: ipc_object_translate(/* ipc_space_t, mach_port_t, 119: mach_port_right_t, ipc_object_t * */); 120: 121: extern kern_return_t 122: ipc_object_alloc_dead(/* ipc_space_t, mach_port_t * */); 123: 124: extern kern_return_t 125: ipc_object_alloc_dead_name(/* ipc_space_t, mach_port_t */); 126: 127: extern kern_return_t 128: ipc_object_alloc(/* ipc_space_t, ipc_object_type_t, 129: mach_port_type_t, mach_port_urefs_t, 130: mach_port_t *, ipc_object_t * */); 131: 132: extern kern_return_t 133: ipc_object_alloc_name(/* ipc_space_t, ipc_object_type_t, 134: mach_port_type_t, mach_port_urefs_t, 135: mach_port_t, ipc_object_t * */); 136: 137: extern mach_msg_type_name_t 138: ipc_object_copyin_type(/* mach_msg_type_name_t */); 139: 140: extern kern_return_t 141: ipc_object_copyin(/* ipc_space_t, mach_port_t, 142: mach_msg_type_name_t, ipc_object_t * */); 143: 144: extern void 145: ipc_object_copyin_from_kernel(/* ipc_object_t, mach_msg_type_name_t */); 146: 147: extern void 148: ipc_object_destroy(/* ipc_object_t, mach_msg_type_name_t */); 149: 150: extern kern_return_t 151: ipc_object_copyout(/* ipc_space_t, ipc_object_t, 152: mach_msg_type_name_t, boolean_t, mach_port_t * */); 153: 154: extern kern_return_t 155: ipc_object_copyout_name(/* ipc_space_t, ipc_object_t, 156: mach_msg_type_name_t, boolean_t, mach_port_t */); 157: 158: extern void 159: ipc_object_copyout_dest(/* ipc_space_t, ipc_object_t, 160: mach_msg_type_name_t, mach_port_t * */); 161: 162: extern kern_return_t 163: ipc_object_rename(/* ipc_space_t, mach_port_t, mach_port_t */); 164: 165: #if MACH_IPC_COMPAT 166: 167: extern mach_msg_type_name_t 168: ipc_object_copyout_type_compat(/* mach_msg_type_name_t */); 169: 170: extern kern_return_t 171: ipc_object_copyin_compat(/* ipc_space_t, mach_port_t, 172: mach_msg_type_name_t, boolean_t, 173: ipc_object_t * */); 174: 175: extern kern_return_t 176: ipc_object_copyin_header(/* ipc_space_t, mach_port_t, 177: ipc_object_t *, mach_msg_type_name_t * */); 178: 179: extern kern_return_t 180: ipc_object_copyout_compat(/* ipc_space_t, ipc_object_t, 181: mach_msg_type_name_t, mach_port_t * */); 182: 183: extern kern_return_t 184: ipc_object_copyout_name_compat(/* ipc_space_t, ipc_object_t, 185: mach_msg_type_name_t, mach_port_t */); 186: 1.1.1.2 ! root 187: #endif /* MACH_IPC_COMPAT */ 1.1 root 188: 189: extern void 190: ipc_object_print(/* ipc_object_t */); 191: 1.1.1.2 ! root 192: #endif /* _IPC_IPC_OBJECT_H_ */
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