5c273ca58c
If BYTCHK is zero the target should NOT perform a compare of data in buffer with data on media, so if we send knowingly bad data to compare with the target shall not detect the miscompare but return sgtatus good.
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
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Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include "iscsi.h"
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#include "scsi-lowlevel.h"
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#include "iscsi-test.h"
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int T0132_verify10_mismatch_no_cmp(const char *initiator, const char *url)
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{
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struct iscsi_context *iscsi;
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struct scsi_task *task;
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struct scsi_task *vtask;
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struct scsi_readcapacity10 *rc10;
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int ret, i, lun;
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uint32_t block_size, num_blocks;
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iscsi = iscsi_context_login(initiator, url, &lun);
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if (iscsi == NULL) {
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printf("Failed to login to target\n");
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return -1;
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}
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/* find the size of the LUN */
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task = iscsi_readcapacity10_sync(iscsi, lun, 0, 0);
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if (task == NULL) {
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printf("Failed to send readcapacity10 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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goto finished;
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}
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if (task->status != SCSI_STATUS_GOOD) {
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printf("Readcapacity command: failed with sense. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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rc10 = scsi_datain_unmarshall(task);
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if (rc10 == NULL) {
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printf("failed to unmarshall readcapacity10 data. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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block_size = rc10->block_size;
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num_blocks = rc10->lba;
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scsi_free_scsi_task(task);
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ret = 0;
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/* read and verify the first 1 - 256 blocks at the start of the LUN */
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printf("Read+verify first 1-256 blocks ... ");
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for (i = 1; i <= 256; i++) {
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char *buf;
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task = iscsi_read10_sync(iscsi, lun, 0, i * block_size, block_size);
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if (task == NULL) {
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printf("[FAILED]\n");
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printf("Failed to send read10 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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goto finished;
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}
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if (task->status != SCSI_STATUS_GOOD) {
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printf("[FAILED]\n");
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printf("Read10 command: failed with sense. %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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buf = task->datain.data;
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if (buf == NULL) {
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printf("[FAILED]\n");
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printf("Failed to access DATA-IN buffer %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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/* flip a random byte in the data */
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buf[random() % task->datain.size] ^= 'X';
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/* bytechk == 0 ==> target should NOT compate the data so should
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not detect the mismatch.
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*/
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vtask = iscsi_verify10_sync(iscsi, lun, buf, i * block_size, 0, 0, 1, 0, block_size);
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if (vtask == NULL) {
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printf("[FAILED]\n");
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printf("Failed to send verify10 command: %s\n", iscsi_get_error(iscsi));
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ret = -1;
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scsi_free_scsi_task(task);
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goto finished;
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}
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if (vtask->status != SCSI_STATUS_GOOD) {
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printf("[FAILED]\n");
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printf("Verify10 returned sense but BYTCHK==1 means it should not check/compare the data.\n");
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ret = -1;
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scsi_free_scsi_task(task);
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scsi_free_scsi_task(vtask);
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goto finished;
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}
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scsi_free_scsi_task(task);
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scsi_free_scsi_task(vtask);
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}
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printf("[OK]\n");
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finished:
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iscsi_logout_sync(iscsi);
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iscsi_destroy_context(iscsi);
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return ret;
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}
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