minix/servers/rs/error.c

   1 /*
   2  * Changes:
   3  *   Mar 07, 2010:  Created  (Cristiano Giuffrida)
   4  */
   5
   6 #include "inc.h"
   7
   8 /* A single error entry. */
   9 struct errentry {
  10     int errnum;
  11     char* errstr;
  12 };
  13
  14 /* Initialization errors. */
  15 static struct errentry init_errlist[] = {
  16   { ENOSYS,     "service does not support the requested initialization type"  }
  17 };
  18 static const int init_nerr = sizeof(init_errlist) / sizeof(init_errlist[0]);
  19
  20 /* Live update errors. */
  21 static struct errentry lu_errlist[] = {
  22   { ENOSYS,     "service does not support live update"                        },
  23   { EINVAL,     "service does not support the required state"                 },
  24   { EBUSY,      "service is not able to prepare for the update now"           },
  25   { EGENERIC,   "generic error occurred while preparing for the update"       }
  26 };
  27 static const int lu_nerr = sizeof(lu_errlist) / sizeof(lu_errlist[0]);
  28
  29 /*===========================================================================*
  30  *                                rs_strerror                                *
  31  *===========================================================================*/
  32 static char * rs_strerror(int errnum, struct errentry *errlist, const int nerr)
  33 {
  34   int i;
  35
  36   for(i=0; i < nerr; i++) {
  37       if(errnum == errlist[i].errnum)
  38           return errlist[i].errstr;
  39   }
  40
  41   return strerror(-errnum);
  42 }
  43
  44 /*===========================================================================*
  45  *                                init_strerror                              *
  46  *===========================================================================*/
  47 char * init_strerror(int errnum)
  48 {
  49   return rs_strerror(errnum, init_errlist, init_nerr);
  50 }
  51
  52 /*===========================================================================*
  53  *                                 lu_strerror                               *
  54  *===========================================================================*/
  55 char * lu_strerror(int errnum)
  56 {
  57   return rs_strerror(errnum, lu_errlist, lu_nerr);
  58 }