/* 
   Copyright (C) 2014 Ronnie Sahlberg <ronniesahlberg@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 <inttypes.h>

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

void
test_get_lba_status_unmap_single(void)
{
        uint64_t i;
        struct unmap_list list[1];
        struct scsi_task *t = NULL;
        struct scsi_get_lba_status *lbas = NULL;
        struct scsi_lba_status_descriptor *lbasd = NULL;

        CHECK_FOR_DATALOSS;
        CHECK_FOR_THIN_PROVISIONING;
        CHECK_FOR_LBPU;

        memset(scratch, 'A', (256 + lbppb + 1) * block_size);

        logging(LOG_VERBOSE, LOG_BLANK_LINE);
        logging(LOG_VERBOSE, "Test GETLBASTATUS for a single unmapped block "
                "at offset 0-255");
        logging(LOG_VERBOSE, "We have %d logical blocks per physical block",
                lbppb);

        logging(LOG_VERBOSE, "Write the first %i blocks with a known "
                "pattern and thus map the blocks", 256 + lbppb);
        WRITE10(sd, 0, (256 + lbppb) * block_size,
                block_size, 0, 0, 0, 0, 0, scratch,
                EXPECT_STATUS_GOOD);

        for (i = 0; i + lbppb <= 256; i += lbppb) {
                logging(LOG_VERBOSE, "Unmap a single physical block at LBA:%"
                        PRIu64 " (number of logical blocks: %d)", i, lbppb);
                list[0].lba = i;
                list[0].num = lbppb;
                UNMAP(sd, 0, list, 1,
                      EXPECT_STATUS_GOOD);

                logging(LOG_VERBOSE, "Read the status of the block at LBA:%"
                        PRIu64, i);
                GETLBASTATUS(sd, NULL, i, 24,
                             EXPECT_STATUS_GOOD);

                logging(LOG_VERBOSE, "Read the status of the block at LBA:%"
                        PRIu64, i + lbppb);
                GETLBASTATUS(sd, &t, i + lbppb, 24,
                             EXPECT_STATUS_GOOD);
                if (t == NULL) {
                        CU_FAIL("[FAILED] GETLBASTATUS task is NULL");
                        return;
                }
                lbas = scsi_datain_unmarshall(t);
                if (lbas == NULL) {
                        CU_FAIL("[FAILED] GETLBASTATUS command: failed "
                                "to unmarshall data.");
                        scsi_free_scsi_task(t);
                        return;
                }
                lbasd = &lbas->descriptors[0];
                if (lbasd->lba != i + lbppb) {
                        CU_FAIL("[FAILED] GETLBASTATUS command: "
                                "lba offset in first descriptor does not "
                                "match request.");
                        scsi_free_scsi_task(t);
                        return;
                }
                if (lbasd->provisioning != SCSI_PROVISIONING_TYPE_MAPPED) {
                        CU_FAIL("[FAILED] LBA should be mapped but isn't");
                        return;
                }
                scsi_free_scsi_task(t);
        }

        logging(LOG_VERBOSE, LOG_BLANK_LINE);
        logging(LOG_VERBOSE, "Test GETLBASTATUS for a single range of 1-255 "
                "blocks at offset 0");
        for (i = lbppb; i + lbppb <= 256; i += lbppb) {
                logging(LOG_VERBOSE, "Write the first %i blocks with a known "
                        "pattern and thus map the blocks", (256 + lbppb));
                WRITE10(sd, 0, (256 + lbppb) * block_size,
                        block_size, 0, 0, 0, 0, 0, scratch,
                        EXPECT_STATUS_GOOD);

                logging(LOG_VERBOSE, "Unmap %" PRIu64 " blocks at LBA 0", i);
                list[0].lba = 0;
                list[0].num = i;
                UNMAP(sd, 0, list, 1,
                      EXPECT_STATUS_GOOD);

                logging(LOG_VERBOSE, "Read the status of the block at LBA:0");

                GETLBASTATUS(sd, NULL, 0, 24,
                             EXPECT_STATUS_GOOD);

                logging(LOG_VERBOSE, "Read the status of the block at LBA:%" PRIu64, i + 1);
                GETLBASTATUS(sd, &t, i + 1, 24,
                             EXPECT_STATUS_GOOD);
                if (t == NULL) {
                        CU_FAIL("[FAILED] GETLBASTATUS task is NULL");
                        return;
                }
                lbas = scsi_datain_unmarshall(t);
                if (lbas == NULL) {
                        CU_FAIL("[FAILED] GETLBASTATUS command: failed "
                                "to unmarshall data.");
                        scsi_free_scsi_task(t);
                        return;
                }
                lbasd = &lbas->descriptors[0];
                if (lbasd->lba != i + lbppb) {
                        CU_FAIL("[FAILED] GETLBASTATUS command: "
                                "lba offset in first descriptor does not "
                                "match request.");
                        scsi_free_scsi_task(t);
                        return;
                }
                if (lbasd->provisioning != SCSI_PROVISIONING_TYPE_MAPPED) {
                        CU_FAIL("[FAILED] LBA should be mapped but isn't");
                        return;
                }
                scsi_free_scsi_task(t);
        }
}