/* 
   Copyright (C) 2013 Ronnie Sahlberg <ronneisahlberg@gmail.com>
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>

#include <CUnit/CUnit.h>

#include "iscsi.h"
#include "scsi-lowlevel.h"
#include "iscsi-test-cu.h"


static int ilog2(size_t i)
{
        int j = -1;

        while (i) {
                i >>= 1;
                j++;
        }
        return j;
}

void
test_read16_beyond_eol(void)
{ 
        int i;

        CHECK_FOR_SBC;

        logging(LOG_VERBOSE, LOG_BLANK_LINE);
        logging(LOG_VERBOSE, "Test READ16 1-256 blocks one block beyond the end");
        for (i = 1; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, num_blocks + 1 - i,
                       i * block_size, block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }

        logging(LOG_VERBOSE, "Test READ16 1-256 blocks at LBA==2^63");
        for (i = 1; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, 0x8000000000000000ULL,
                       i * block_size, block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }

        logging(LOG_VERBOSE, "Test READ16 1-256 blocks at LBA==2^%d",
                64 - ilog2(block_size));
        for (i = 1; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, 1ULL << (64 - ilog2(block_size)),
                       i * block_size, block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }

        logging(LOG_VERBOSE, "Test READ16 1-256 blocks at LBA==2^%d",
                63 - ilog2(block_size));
        for (i = 1; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, 1ULL << (63 - ilog2(block_size)),
                       i * block_size, block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }

        logging(LOG_VERBOSE, "Test READ16 1-256 blocks at LBA==-1");
        for (i = 1; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, -1, i * block_size,
                       block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }

        logging(LOG_VERBOSE, "Test READ16 2-256 blocks all but one block beyond the end");
        for (i = 2; i <= 256; i++) {
                if (maximum_transfer_length && maximum_transfer_length < i) {
                        break;
                }
                READ16(sd, NULL, num_blocks - 1,
                       i * block_size, block_size, 0, 0, 0, 0, 0, NULL,
                       EXPECT_LBA_OOB);
        }
}