1 /* 2 * Copyright (c) 2003 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 [email protected] 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 #include <limits.h> 58 59 #include <mach/boolean.h> 60 #include <mach/error.h> 61 #include <mach/mach_error.h> 62 63 #include "errorlib.h" 64 #include "externs.h" 65 66 static void do_compat(mach_error_t *); 67 68 static void 69 do_compat(mach_error_t *org_err) 70 { 71 mach_error_t err = *org_err; 72 73 /* 74 * map old error numbers to 75 * to new error sys & subsystem 76 */ 77 78 if ((-200 < err) && (err <= -100)) { 79 err = -(err + 100) | IPC_SEND_MOD; 80 } else if ((-300 < err) && (err <= -200)) { 81 err = -(err + 200) | IPC_RCV_MOD; 82 } else if ((-400 < err) && (err <= -300)) { 83 err = -(err + 300) | MACH_IPC_MIG_MOD; 84 } else if ((1000 <= err) && (err < 1100)) { 85 err = (err - 1000) | SERV_NETNAME_MOD; 86 } else if ((1600 <= err) && (err < 1700)) { 87 err = (err - 1600) | SERV_ENV_MOD; 88 } else if ((27600 <= err) && (err < 27700)) { 89 err = (err - 27600) | SERV_EXECD_MOD; 90 } 91 92 *org_err = err; 93 } 94 95 static int 96 err_sparse_mapit(int old, const struct error_sparse_map *map_table, int mapcnt) 97 { 98 boolean_t found = FALSE; 99 int ret = 0, i; 100 101 for (i = 0; i < mapcnt; i++) { 102 struct error_sparse_map entry = map_table[i]; 103 104 if (entry.start <= old && old <= entry.end) { 105 ret += old - entry.start; 106 found = TRUE; 107 break; 108 } 109 ret += entry.end - entry.start + 1; 110 } 111 112 return (found)? ret : INT_MAX; 113 } 114 115 char * 116 mach_error_type(mach_error_t err) 117 { 118 const struct error_system *sys_p; 119 int sub, system; 120 121 do_compat( &err ); 122 123 system = err_get_system(err); 124 sys_p = &_mach_errors[system]; 125 sub = err_get_sub(err); 126 127 if (system <= err_max_system && sys_p->map_table) { 128 sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); 129 } 130 131 if (system > err_max_system || sub >= sys_p->max_sub) { 132 return (char *)"(?/?)"; 133 } 134 return (char *) (sys_p->subsystem[sub].subsys_name); 135 } 136 137 boolean_t mach_error_full_diag = FALSE; 138 139 __private_extern__ char * 140 mach_error_string_int(mach_error_t err, boolean_t *diag) 141 { 142 const struct error_system *sys_p; 143 const struct error_subsystem *sub_p; 144 int sub, system, code; 145 146 do_compat( &err ); 147 148 system = err_get_system(err); 149 sys_p = &_mach_errors[system]; 150 sub = err_get_sub(err); 151 code = err_get_code(err); 152 153 *diag = TRUE; 154 155 if (system > err_max_system) { 156 return (char *)"(?/?) unknown error system"; 157 } else if (sys_p->map_table) { 158 sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); 159 } 160 161 if (sub >= sys_p->max_sub) { 162 return (char *)sys_p->bad_sub; 163 } 164 165 sub_p = &sys_p->subsystem[sub]; 166 if (sub_p->map_table) { 167 code = err_sparse_mapit(code, sub_p->map_table, sub_p->map_count); 168 } 169 if (code >= sub_p->max_code) { 170 return (char *)NO_SUCH_ERROR; 171 } 172 173 *diag = mach_error_full_diag; 174 return (char *)sub_p->codes[code]; 175 } 176 177 char * 178 mach_error_string(mach_error_t err) 179 { 180 boolean_t diag; 181 182 return mach_error_string_int( err, &diag ); 183 } 184 185 /* vim: set ts=4: */ 186