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   { ERESTART,     "service requested an initialization reset"  }
  18 };
  19 static const int init_nerr = sizeof(init_errlist) / sizeof(init_errlist[0]);
  20
  21 /* Live update errors. */
  22 static struct errentry lu_errlist[] = {
  23   { ENOSYS,     "service does not support live update"                        },
  24   { EINVAL,     "service does not support the required state"                 },
  25   { EBUSY,      "service is not able to prepare for the update now"           },
  26   { EGENERIC,   "generic error occurred while preparing for the update"       }
  27 };
  28 static const int lu_nerr = sizeof(lu_errlist) / sizeof(lu_errlist[0]);
  29
  30 /*===========================================================================*
  31  *                                rs_strerror                                *
  32  *===========================================================================*/
  33 static char * rs_strerror(int errnum, struct errentry *errlist, const int nerr)
  34 {
  35   int i;
  36
  37   for(i=0; i < nerr; i++) {
  38       if(errnum == errlist[i].errnum)
  39           return errlist[i].errstr;
  40   }
  41
  42   return strerror(-errnum);
  43 }
  44
  45 /*===========================================================================*
  46  *                                init_strerror                              *
  47  *===========================================================================*/
  48 char * init_strerror(int errnum)
  49 {
  50   return rs_strerror(errnum, init_errlist, init_nerr);
  51 }
  52
  53 /*===========================================================================*
  54  *                                 lu_strerror                               *
  55  *===========================================================================*/
  56 char * lu_strerror(int errnum)
  57 {
  58   return rs_strerror(errnum, lu_errlist, lu_nerr);
  59 }