mach.subproj/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 #include <mach/errorlib.h>
  34 #include "externs.h"
  35
  36 static void do_compat(mach_error_t *);
  37
  38 static void
  39 do_compat(mach_error_t *org_err)
  40 {
  41         mach_error_t            err = *org_err;
  42
  43         /*
  44          * map old error numbers to
  45          * to new error sys & subsystem
  46          */
  47
  48         if ((-200 < err) && (err <= -100))
  49                 err = -(err + 100) | IPC_SEND_MOD;
  50         else if ((-300 < err) && (err <= -200))
  51                 err = -(err + 200) | IPC_RCV_MOD;
  52         else if ((-400 < err) && (err <= -300))
  53                 err = -(err + 300) | MACH_IPC_MIG_MOD;
  54         else if ((1000 <= err) && (err < 1100))
  55                 err = (err - 1000) | SERV_NETNAME_MOD;
  56         else if ((1600 <= err) && (err < 1700))
  57                 err = (err - 1600) | SERV_ENV_MOD;
  58         else if ((27600 <= err) && (err < 27700))
  59                 err = (err - 27600) | SERV_EXECD_MOD;
  60
  61         *org_err = err;
  62 }
  63
  64 char *
  65 mach_error_type(mach_error_t err)
  66 {
  67         int sub, system;
  68
  69         do_compat( &err );
  70
  71         sub = err_get_sub(err);
  72         system = err_get_system(err);
  73
  74         if (system > err_max_system || sub >= errors[system].max_sub)
  75             return((char *)"(?/?)");
  76         return(errors[system].subsystem[sub].subsys_name);
  77 }
  78
  79 boolean_t mach_error_full_diag = FALSE;
  80
  81 char *
  82 mach_error_string_int(mach_error_t err, boolean_t *diag)
  83 {
  84         int sub, system, code;
  85
  86         do_compat( &err );
  87
  88         sub = err_get_sub(err);
  89         system = err_get_system(err);
  90         code = err_get_code(err);
  91
  92         *diag = TRUE;
  93
  94         if (system > err_max_system)
  95             return((char *)"(?/?) unknown error system");
  96         if (sub >= errors[system].max_sub)
  97             return(errors[system].bad_sub);
  98         if (code >= errors[system].subsystem[sub].max_code)
  99             return ((char *)NO_SUCH_ERROR);
 100
 101         *diag = mach_error_full_diag;
 102         return( errors[system].subsystem[sub].codes[code] );
 103 }
 104
 105 char *
 106 mach_error_string(mach_error_t err)
 107 {
 108         boolean_t diag;
 109
 110         return mach_error_string_int( err, &diag );
 111
 112 }