mach/mach/error.h

   1 /*  err_hurd added by roland@gnu.ai.mit.edu for GNU Hurd.
   2  *
   3  * Mach Operating System
   4  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
   5  * All Rights Reserved.
   6  *
   7  * Permission to use, copy, modify and distribute this software and its
   8  * documentation is hereby granted, provided that both the copyright
   9  * notice and this permission notice appear in all copies of the
  10  * software, derivative works or modified versions, and any portions
  11  * thereof, and that both notices appear in supporting documentation.
  12  *
  13  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  14  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  15  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  16  *
  17  * Carnegie Mellon requests users of this software to return to
  18  *
  19  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  20  *  School of Computer Science
  21  *  Carnegie Mellon University
  22  *  Pittsburgh PA 15213-3890
  23  *
  24  * any improvements or extensions that they make and grant Carnegie Mellon
  25  * the rights to redistribute these changes.
  26  */
  27 /*
  28  * (pre-GNU) HISTORY
  29  *
  30  * Revision 2.6  93/01/14  17:41:31  danner
  31  *      Standardized include symbol name.
  32  *      [92/06/10            pds]
  33  *
  34  * Revision 2.5  92/03/31  15:18:11  rpd
  35  *      Added err_bootstrap for bootstrap errors.
  36  *      [92/03/09            rpd]
  37  *
  38  * Revision 2.4  91/05/14  16:51:24  mrt
  39  *      Correcting copyright
  40  *
  41  * Revision 2.3  91/02/05  17:31:48  mrt
  42  *      Changed to new Mach copyright
  43  *      [91/02/01  17:16:50  mrt]
  44  *
  45  * Revision 2.2  90/06/02  14:57:47  rpd
  46  *      Added err_mach_ipc for new IPC.
  47  *      [90/03/26  22:28:42  rpd]
  48  *
  49  * Revision 2.1  89/08/03  16:02:07  rwd
  50  * Created.
  51  *
  52  * Revision 2.4  89/02/25  18:13:18  gm0w
  53  *      Changes for cleanup.
  54  *
  55  * Revision 2.3  89/02/07  00:51:57  mwyoung
  56  * Relocated from sys/error.h
  57  *
  58  * Revision 2.2  88/10/18  00:37:31  mwyoung
  59  *      Added {system,sub and code}_emask
  60  *      [88/10/17  17:06:58  mrt]
  61  *
  62  *      Added {system,sub and code}_emask
  63  *
  64  *  12-May-88 Mary Thompson (mrt) at Carnegie Mellon
  65  *      Changed mach_error_t from unsigned int to kern_return_t
  66  *      which is a 32 bit integer regardless of machine type.
  67  *      unsigned int was incompatible with old usages of mach_error.
  68  *
  69  *  10-May-88 Douglas Orr (dorr) at Carnegie-Mellon University
  70  *      Missing endif replaced
  71  *
  72  *   5-May-88 Mary Thompson (mrt) at Carnegie Mellon
  73  *      Changed typedef of mach_error_t from long to unsigned int
  74  *      to keep our Camelot users happy. Also moved the nonkernel
  75  *      function declarations from here to mach_error.h.
  76  *
  77  *  10-Feb-88 Douglas Orr (dorr) at Carnegie-Mellon University
  78  *      Created.
  79  *
  80  */
  81 /*
  82  * File:        mach/error.h
  83  * Purpose:
  84  *      error module definitions
  85  *
  86  */
  87
  88 #ifndef _MACH_ERROR_H_
  89 #define _MACH_ERROR_H_
  90 #include <mach/kern_return.h>
  91
  92 /*
  93  *      error number layout as follows:
  94  *
  95  *      hi                                     lo
  96  *      | system(6) | subsystem(12) | code(14) |
  97  */
  98
  99
 100 #define err_none                (mach_error_t)0
 101 #define ERR_SUCCESS             (mach_error_t)0
 102 #define ERR_ROUTINE_NIL         (mach_error_fn_t)0
 103
 104
 105 #define err_system(x)           (((x)&0x3f)<<26)
 106 #define err_sub(x)              (((x)&0xfff)<<14)
 107
 108 #define err_get_system(err)     (((err)>>26)&0x3f)
 109 #define err_get_sub(err)        (((err)>>14)&0xfff)
 110 #define err_get_code(err)       ((err)&0x3fff)
 111
 112 #define system_emask            (err_system(0x3f))
 113 #define sub_emask               (err_sub(0xfff))
 114 #define code_emask              (0x3fff)
 115
 116
 117 /*      major error systems     */
 118 #define err_kern                err_system(0x0)         /* kernel */
 119 #define err_us                  err_system(0x1)         /* user space library */
 120 #define err_server              err_system(0x2)         /* user space servers */
 121 #define err_ipc                 err_system(0x3)         /* old ipc errors */
 122 #define err_mach_ipc            err_system(0x4)         /* mach-ipc errors */
 123 #define err_bootstrap           err_system(0x5)         /* bootstrap errors */
 124 #define err_hurd                err_system(0x10) /* GNU Hurd server errors */
 125 #define err_local               err_system(0x3e)        /* user defined errors */
 126 #define err_ipc_compat          err_system(0x3f)        /* (compatibility) mach-ipc errors */
 127
 128 #define err_max_system          0x3f
 129
 130
 131 /*      unix errors get lumped into one subsystem  */
 132 #define unix_err(errno)         (err_kern|err_sub(3)|errno)
 133
 134 typedef kern_return_t   mach_error_t;
 135 /* typedef mach_error_t (* mach_error_fn_t)(); */
 136
 137 #endif  /* _MACH_ERROR_H_ */