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Annotation of OSKit-Mach/include/mach/error.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             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.
        !            11:  * 
        !            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.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  * File:       mach/error.h
        !            28:  * Purpose:
        !            29:  *     error module definitions
        !            30:  *
        !            31:  */
        !            32: 
        !            33: #ifndef        _MACH_ERROR_H_
        !            34: #define _MACH_ERROR_H_
        !            35: #include <mach/kern_return.h>
        !            36: 
        !            37: /*
        !            38:  *     error number layout as follows:
        !            39:  *
        !            40:  *     hi                                     lo
        !            41:  *     | system(6) | subsystem(12) | code(14) |
        !            42:  */
        !            43: 
        !            44: 
        !            45: #define        err_none                (mach_error_t)0
        !            46: #define ERR_SUCCESS            (mach_error_t)0
        !            47: #define        ERR_ROUTINE_NIL         (mach_error_fn_t)0
        !            48: 
        !            49: 
        !            50: #define        err_system(x)           (((x)&0x3f)<<26)
        !            51: #define err_sub(x)             (((x)&0xfff)<<14)
        !            52: 
        !            53: #define err_get_system(err)    (((err)>>26)&0x3f)
        !            54: #define err_get_sub(err)       (((err)>>14)&0xfff)
        !            55: #define err_get_code(err)      ((err)&0x3fff)
        !            56: 
        !            57: #define system_emask           (err_system(0x3f))
        !            58: #define sub_emask              (err_sub(0xfff))
        !            59: #define code_emask             (0x3fff)
        !            60: 
        !            61: 
        !            62: /*     Mach error systems      */
        !            63: #define        err_kern                err_system(0x0)         /* kernel */
        !            64: #define        err_us                  err_system(0x1)         /* user space library */
        !            65: #define        err_server              err_system(0x2)         /* user space servers */
        !            66: #define        err_ipc                 err_system(0x3)         /* old ipc errors */
        !            67: #define err_mach_ipc           err_system(0x4)         /* mach-ipc errors */
        !            68: #define err_bootstrap          err_system(0x5)         /* bootstrap errors */
        !            69: #define err_hurd               err_system(0x10)        /* GNU Hurd server errors */
        !            70: #define err_local              err_system(0x3e)        /* user defined errors */
        !            71: #define        err_ipc_compat          err_system(0x3f)        /* (compatibility) mach-ipc errors */
        !            72: 
        !            73: #define        err_max_system          0x3f
        !            74: 
        !            75: 
        !            76: /*     special old "subsystems" that don't really follow the above rules */
        !            77: #define err_mig                        -300
        !            78: #define err_exec               6000
        !            79: 
        !            80: /*     unix errors get lumped into one subsystem  */
        !            81: #define err_unix               (err_kern|err_sub(3))
        !            82: #define        unix_err(errno)         (err_kern|err_sub(3)|errno)
        !            83: 
        !            84: /*     MS-DOS extended error codes */
        !            85: #define err_dos                        (err_kern|err_sub(0xd05))
        !            86: 
        !            87: /*     Flux OS error systems */
        !            88: #define err_fluke              err_system(0x20)        /* Fluke API */
        !            89: 
        !            90: #ifndef ASSEMBLER
        !            91: typedef        kern_return_t   mach_error_t;
        !            92: typedef mach_error_t   (* mach_error_fn_t)();
        !            93: #endif /* ASSEMBLER */
        !            94: 
        !            95: #endif /* _MACH_ERROR_H_ */

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