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 *org_err = err; 92 } 93 94 static int 95 err_sparse_mapit(int old, const struct error_sparse_map *map_table, int mapcnt) 96 { 97 boolean_t found = FALSE; 98 int ret = 0, i; 99 100 for (i = 0; i < mapcnt; i++) { 101 struct error_sparse_map entry = map_table[i]; 102 103 if (entry.start <= old && old <= entry.end) { 104 ret += old - entry.start; 105 found = TRUE; 106 break; 107 } 108 ret += entry.end - entry.start + 1; 109 } 110 111 return (found)? ret : INT_MAX; 112 } 113 114 char * 115 mach_error_type(mach_error_t err) 116 { 117 const struct error_system *sys_p; 118 int sub, system; 119 120 do_compat( &err ); 121 122 system = err_get_system(err); 123 sys_p = &_mach_errors[system]; 124 sub = err_get_sub(err); 125 126 if (system <= err_max_system && sys_p->map_table) 127 sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); 128 129 if (system > err_max_system || sub >= sys_p->max_sub) 130 return((char *)"(?/?)"); 131 return (char *) (sys_p->subsystem[sub].subsys_name); 132 } 133 134 boolean_t mach_error_full_diag = FALSE; 135 136 __private_extern__ char * 137 mach_error_string_int(mach_error_t err, boolean_t *diag) 138 { 139 const struct error_system *sys_p; 140 const struct error_subsystem *sub_p; 141 int sub, system, code; 142 143 do_compat( &err ); 144 145 system = err_get_system(err); 146 sys_p = &_mach_errors[system]; 147 sub = err_get_sub(err); 148 code = err_get_code(err); 149 150 *diag = TRUE; 151 152 if (system > err_max_system) 153 return((char *)"(?/?) unknown error system"); 154 else if (sys_p->map_table) 155 sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); 156 157 if (sub >= sys_p->max_sub) 158 return((char *)sys_p->bad_sub); 159 160 sub_p = &sys_p->subsystem[sub]; 161 if (sub_p->map_table) 162 code = err_sparse_mapit(code, sub_p->map_table, sub_p->map_count); 163 if (code >= sub_p->max_code) 164 return ((char *)NO_SUCH_ERROR); 165 166 *diag = mach_error_full_diag; 167 return( (char *)sub_p->codes[code] ); 168 } 169 170 char * 171 mach_error_string(mach_error_t err) 172 { 173 boolean_t diag; 174 175 return mach_error_string_int( err, &diag ); 176 } 177 178 /* vim: set ts=4: */ 179