cdb.c

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/*                               -*- Mode: C -*- 
 * cdb.c
 * 
 * Description     : Predefined CDBs that may be sent via the
 *                   tape_execute_cdb and ndmp_execute_cdb commands.
 * 
 * Copyright (c) 1996,1997 PDC, Network Appliance. All Rights Reserved.
 *
 * $Id: cdb.c,v 1.4 1997/02/10 07:13:26 tim Exp $
 */

#if !defined(lint) && !defined(SABER)
static char rcsId[] __attribute__ ((unused)) = "@(#) $Id: cdb.c,v 1.4 1997/02/10 07:13:26 tim Exp $";
#endif

#include <sys/types.h>
#include <stdio.h>

#include "ndmp_common.h"

struct Cdb
{
	int		cdb_len;
	char	cdb[12];
	int		data_len;
	char	data[256];
} Cdbs[] =
  {
	  {
		  /* 0 Test Unit Ready */
		  6,
		  {0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		  0,
		  {0}
	  },
	  {
		  /* 1 Request Sense */
		  6,
		  {3, 0, 0, 0, 0, 0, 0, 0, 0, 0},
		  0,
		  {0}
	  },
	  {
		  /* 2 Read Element Status */
		  12,
		  {0xB8, 0, 0, 1, 0, 7, 0, 0, 0, 0xff, 0, 0},
		  0,
		  {0}
	  },
	  {
		  /* 3 Move Medium (slot 1 to drive) */
		  12,
		  {0xA5, 0, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0},
		  0,
		  {0}
	  },
	  {
		  /* 4 Move Medium (drive to slot 1) */
		  12,
		  {0xA5, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0},
		  0,
		  {0}
	  },
	  {
		  /* 5 Mode select to diagnose filer panic bug */
		  10,
		  {0x15, 0x10, 0, 0, 0x15, 0, 0x15, 0, 0, 0x10},
		  0,
		  {0}
	  }
  };

#define N_CDBS	(sizeof(Cdbs)/sizeof(struct Cdb))
	  
static void
hex_dump(char	*data,
		 int	len);
		  
int
getCdb(u_long	num,
	   char		**cdb,
	   u_long	*cdb_len,
	   char		**data,
	   u_long	*data_len)
{
	if (num >= N_CDBS)
		return(-1);

	*cdb      = Cdbs[num].cdb;
	*cdb_len  = Cdbs[num].cdb_len;
	*data     = Cdbs[num].data;
	*data_len = Cdbs[num].data_len;
	return(0);
}

void
displayCdbReply(char	status,
				u_long	dataout_len,
				char	*data,
				int		data_len,
				char	*sense,
				int		sense_len)
{
	Log("SCSI status: 0x%x\n", (u_int)status);
	Log("Dataout len: %d\n", dataout_len);
	
	if (sense_len)
	{
		Log("Sense data:");
		hex_dump(sense, sense_len);
		return;
	}

	if (data_len)
	{
		Log("Data:");
		hex_dump(data, data_len);
	}
}

static void
hex_dump(char	*data,
		 int	len)
{
	int		i, j;

	for (i = 0; i < len; i += 16)
	{
		char	buf[128];
		char	*p;
		
		sprintf(buf, "  0x%04x: ", i);
		p = buf+10;
		
		for (j = 0; j < 16 && i+j < len; j++)
		{
			sprintf(p, "%02x ", (unsigned int)data[i+j] & 0x0ff);
			p += 3;
			if (j+1 % 2 == 0)
				*p++ = ' ';
		}
		*p = '\0';

		Log("%s\n", buf);
	}
}