#ifndef ERROR_H
#define ERROR_H

#include <errno.h>

#ifndef EPROTO /* OpenBSD compat */
  #define EPROTO EINTR
#endif

#define error_str(i) errstr(i)
extern char *error_str(int);

/* Exception handling notes:
   (1) system errors RECEIVED according to <errno.h> during operation and handed over
   (2) application errors DEFINED internally and ennumerated alongside with <errno.h>
*/

/* djb backwards compatibility - deprecated form of system errors */
/*                                 Comparison of error codes and constants:
                                           intern   Linux  FreeBSD  OmniOS */
#define error_intr        EINTR        /*    -1       4       4       4    */
#define error_nomem       ENOMEM       /*    -2      12      12      12    */
#define error_noent       ENOENT       /*    -3       2       2       2    */
#define error_txtbsy      ETXTBSY      /*    -4      26      26      26    */
#define error_io          EIO          /*    -5       5       5       5    */
#define error_exist       EEXIST       /*    -6      17      17      17    */
#define error_timeout     ETIMEDOUT    /*    -7     110      60     145    */
#define error_inprogress  EINPROGRESS  /*    -8     115      36     160    */
#define error_wouldblock  EWOULDBLOCK  /*    -9    EAGAIN  EAGAIN  EAGAIN  */
#define error_again       EAGAIN       /*   -10      11      35      11    */
#define error_pipe        EPIPE        /*   -11      32      32      32    */
#define error_perm        EPERM        /*   -12       1       1       1    */
#define error_acces       EACCES       /*   -13      13      13      13    */
#define error_nodevice    ENODEV       /*   -14      (6)     (6)     19    */
#define error_proto       EPROTO       /*   -15      71      92      71    */
#define error_isdir       EISDIR       /*   -16      21      21      21    */
#define error_connrefused ECONNREFUSED /*   -17     111      61     146    */
#define error_rofs        EROFS        /*   -19      30      30      30    */
#define error_connreset   ECONNRESET   /*   -20     104      54     131    */
//extern int error_notdir;             /*   -18      20      20      20    */

/* djb uses some internal application error and class definitions -- revised (feh) */
#define CAT    -10  /* raw message w/o terminating \n */
#define LOG    -90  /* generic logging */
#define INFO   -91  /* named logging */
#define TEMP   -97  /* (triggered) temporay alert condition */
#define ALERT  -98  /* (triggered) alert condition */
#define WARN   -99  /* exception condition */
#define ESOFT  -100 /* soft error, reversed negative */
#define EHARD  -111 /* hard error, reversed negative */
#define USAGE  100  /* usage error on call -- explicit usage() */
#define SYNTAX 101  /* usage/syntax error on call -- explicit syntaxerror() */
#define DROP   110  /* connection dropped -- explicit dropped() */
#define FATAL  111  /* internal error -- all */
#define ERROR  112  /* application error */

#endif