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error.h (4396B) - Raw

      1 /*
      2  * Copyright (c) 2000 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) 1991,1990,1989,1988,1987 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:	mach/error.h
     60  * Purpose:
     61  *	error module definitions
     62  *
     63  */
     64 
     65 #ifndef _MACH_ERROR_H_
     66 #define _MACH_ERROR_H_
     67 
     68 #include <mach/kern_return.h>
     69 
     70 /*
     71  *	error number layout as follows:
     72  *
     73  *	hi		                       lo
     74  *	| system(6) | subsystem(12) | code(14) |
     75  */
     76 
     77 
     78 #define err_none                (mach_error_t)0
     79 #define ERR_SUCCESS             (mach_error_t)0
     80 #define ERR_ROUTINE_NIL         (mach_error_fn_t)0
     81 
     82 
     83 #define err_system(x)           ((signed)((((unsigned)(x))&0x3f)<<26))
     84 #define err_sub(x)              (((x)&0xfff)<<14)
     85 
     86 #define err_get_system(err)     (((err)>>26)&0x3f)
     87 #define err_get_sub(err)        (((err)>>14)&0xfff)
     88 #define err_get_code(err)       ((err)&0x3fff)
     89 
     90 #define system_emask            (err_system(0x3f))
     91 #define sub_emask               (err_sub(0xfff))
     92 #define code_emask              (0x3fff)
     93 
     94 
     95 /*	major error systems	*/
     96 #define err_kern                err_system(0x0)         /* kernel */
     97 #define err_us                  err_system(0x1)         /* user space library */
     98 #define err_server              err_system(0x2)         /* user space servers */
     99 #define err_ipc                 err_system(0x3)         /* old ipc errors */
    100 #define err_mach_ipc            err_system(0x4)         /* mach-ipc errors */
    101 #define err_dipc                err_system(0x7)         /* distributed ipc */
    102 #define err_vm                  err_system(0x8)         /* virtual memory */
    103 /*                              err_system(0x37)           libkern */
    104 /*                              err_system(0x38)           iokit */
    105 #define err_local               err_system(0x3e)        /* user defined errors */
    106 #define err_ipc_compat          err_system(0x3f)        /* (compatibility) mach-ipc errors */
    107 
    108 #define err_max_system          0x3f
    109 
    110 
    111 /*	unix errors get lumped into one subsystem  */
    112 #define unix_err(errno)         (err_kern|err_sub(3)|errno)
    113 
    114 typedef kern_return_t   mach_error_t;
    115 typedef mach_error_t    (* mach_error_fn_t)( void );
    116 
    117 #endif  /* _MACH_ERROR_H_ */