RCS_ID_C="$Id: sana2perror.c,v 4.2 1994/09/29 23:09:02 jraja Exp $";
/*
 *      sana2perror.c - print SANA-II error message
 *
 *      Copyright © 1994 AmiTCP/IP Group, 
 *                       Network Solutions Development Inc.
 *                       All rights reserved.
 */

#include <stdio.h>

#include <devices/sana2.h>
#include <net/sana2errno.h>

/****** sana2.lib/sana2perror *************************************************

    NAME
	sana2perror - print SANA-II device error messages

    SYNOPSIS
	#include <devices/sana2.h>

	sana2perror(banner, ios2request)

	void sana2perror(const char *, struct IOSana2Req *)

    FUNCTION
	The sana2perror() function finds the error message corresponding to
	the error in the given SANA-II IO request and writes it, followed by a
	newline, to the stderr.  If the argument string is non-NULL it is
	preappended to the message string and separated from it by a colon and
	space (`: ').  If string is NULL only the error message string is
	printed.

    NOTES
	The sana2perror() function requires the stdio functions to be linked.

    SEE ALSO
	Sana2PrintFault()

*******************************************************************************
*/

void 
sana2perror(const char *banner, struct IOSana2Req *ios2)
{
  register WORD err = ios2->ios2_Req.io_Error;
  register ULONG werr = ios2->ios2_WireError;
  const char *errstr;

  if (err >= sana2io_nerr || -err > io_nerr) {
    errstr = io_errlist[0];
  } else { 
    if (err < 0) 
      /* Negative error codes are common with all IO devices */
      errstr = io_errlist[-err];
    else 
      /* Positive error codes are SANA-II specific */ 
      errstr = sana2io_errlist[err];
  }

  if (werr == 0 || werr >= sana2wire_nerr) {
    if (banner != NULL)
      fprintf(stderr, "%s: %s\n", banner, errstr);
    else
      fprintf(stderr, "%s\n", errstr);
  } else {
    if (banner != NULL)
      fprintf(stderr, "%s: %s (%s)\n", banner, errstr, sana2wire_errlist[werr]);
    else
      fprintf(stderr, "%s (%s)\n", errstr, sana2wire_errlist[werr]);
  }
}