mach/mach_error_string.c

   1 /*
   2  * @OSF_COPYRIGHT@
   3  */
   4 /*
   5  * Mach Operating System
   6  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
   7  * All Rights Reserved.
   8  *
   9  * Permission to use, copy, modify and distribute this software and its
  10  * documentation is hereby granted, provided that both the copyright
  11  * notice and this permission notice appear in all copies of the
  12  * software, derivative works or modified versions, and any portions
  13  * thereof, and that both notices appear in supporting documentation.
  14  *
  15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  17  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  18  *
  19  * Carnegie Mellon requests users of this software to return to
  20  *
  21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  22  *  School of Computer Science
  23  *  Carnegie Mellon University
  24  *  Pittsburgh PA 15213-3890
  25  *
  26  * any improvements or extensions that they make and grant Carnegie Mellon
  27  * the rights to redistribute these changes.
  28  */
  29
  30 #include <mach/boolean.h>
  31 #include <mach/error.h>
  32 #include <mach/mach_error.h>
  33
  34 #include "errorlib.h"
  35 #include "externs.h"
  36
  37 static void do_compat(mach_error_t *);
  38
  39 static void
  40 do_compat(mach_error_t *org_err)
  41 {
  42         mach_error_t            err = *org_err;
  43
  44         /*
  45          * map old error numbers to
  46          * to new error sys & subsystem
  47          */
  48
  49         if ((-200 < err) && (err <= -100))
  50                 err = -(err + 100) | IPC_SEND_MOD;
  51         else if ((-300 < err) && (err <= -200))
  52                 err = -(err + 200) | IPC_RCV_MOD;
  53         else if ((-400 < err) && (err <= -300))
  54                 err = -(err + 300) | MACH_IPC_MIG_MOD;
  55         else if ((1000 <= err) && (err < 1100))
  56                 err = (err - 1000) | SERV_NETNAME_MOD;
  57         else if ((1600 <= err) && (err < 1700))
  58                 err = (err - 1600) | SERV_ENV_MOD;
  59         else if ((27600 <= err) && (err < 27700))
  60                 err = (err - 27600) | SERV_EXECD_MOD;
  61
  62         *org_err = err;
  63 }
  64
  65 char *
  66 mach_error_type(mach_error_t err)
  67 {
  68         int sub, system;
  69
  70         do_compat( &err );
  71
  72         sub = err_get_sub(err);
  73         system = err_get_system(err);
  74
  75         if (system > err_max_system || sub >= _mach_errors[system].max_sub)
  76             return((char *)"(?/?)");
  77         return(_mach_errors[system].subsystem[sub].subsys_name);
  78 }
  79
  80 boolean_t mach_error_full_diag = FALSE;
  81
  82 __private_extern__ char *
  83 mach_error_string_int(mach_error_t err, boolean_t *diag)
  84 {
  85         int sub, system, code;
  86
  87         do_compat( &err );
  88
  89         sub = err_get_sub(err);
  90         system = err_get_system(err);
  91         code = err_get_code(err);
  92
  93         *diag = TRUE;
  94
  95         if (system > err_max_system)
  96             return((char *)"(?/?) unknown error system");
  97         if (sub >= _mach_errors[system].max_sub)
  98             return(_mach_errors[system].bad_sub);
  99         if (code >= _mach_errors[system].subsystem[sub].max_code)
 100             return ((char *)NO_SUCH_ERROR);
 101
 102         *diag = mach_error_full_diag;
 103         return( _mach_errors[system].subsystem[sub].codes[code] );
 104 }
 105
 106 char *
 107 mach_error_string(mach_error_t err)
 108 {
 109         boolean_t diag;
 110
 111         return mach_error_string_int( err, &diag );
 112
 113 }