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/*
Copyright (C) 2012 by 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 "iscsi.h"
#include "scsi-lowlevel.h"
#include "iscsi-test.h"

int T0264_get_lba_status_beyondeol(const char *initiator, const char *url, int data_loss _U_, int show_info)
{
struct iscsi_context *iscsi;
struct scsi_task *task;
struct scsi_readcapacity16 *rc16;
int ret, lun;
uint64_t num_blocks;

printf("0264_get_lba_status_beyondeol:\n");
printf("==============================\n");
if (show_info) {
printf("Test GET_LBA_STATUS functionality for beyond end-of-lun requests\n");
printf("1, Reading a descriptor beyond the end of the lun should fail.\n");
printf("\n");
return 0;
}

iscsi = iscsi_context_login(initiator, url, &lun);
if (iscsi == NULL) {
printf("Failed to login to target\n");
return -1;
}

/* find the size of the LUN */
task = iscsi_readcapacity16_sync(iscsi, lun);
if (task == NULL) {
printf("Failed to send READCAPACITY16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status != SCSI_STATUS_GOOD) {
printf("READCAPACITY16 command: failed with sense. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
rc16 = scsi_datain_unmarshall(task);
if (rc16 == NULL) {
printf("failed to unmarshall READCAPACITY16 data. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}

if (rc16->lbpme == 0){
printf("Logical unit is fully provisioned. Skipping test\n");
ret = -2;
scsi_free_scsi_task(task);
goto finished;
}

num_blocks = rc16->returned_lba;

scsi_free_scsi_task(task);

ret = 0;

/* try reading one descriptor beyond end-of-device */
printf("Read one descriptor beyond end-of-device ... ");
task = iscsi_get_lba_status_sync(iscsi, lun, num_blocks + 1, 8 + 16);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send GET_LBA_STATUS command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("GET_LBA_STATUS beyond eol should fail with ILLEGAL_REQUEST/LBA_OUT_OF_RANGE\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_ILLEGAL_REQUEST
|| task->sense.ascq != SCSI_SENSE_ASCQ_LBA_OUT_OF_RANGE) {
printf("[FAILED]\n");
printf("GET_LBA_STATUS failed but with the wrong sense code. It should have failed with ILLEGAL_REQUEST/LBA_OUT_OF_RANGE. Sense:%s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");

finished:
iscsi_logout_sync(iscsi);
iscsi_destroy_context(iscsi);
return ret;
}
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