161 lines
6.4 KiB
C
161 lines
6.4 KiB
C
/*
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Copyright (C) 2013 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 <inttypes.h>
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#include <stdlib.h>
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#include <CUnit/CUnit.h>
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#include "iscsi.h"
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#include "scsi-lowlevel.h"
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#include "iscsi-support.h"
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#include "iscsi-test-cu.h"
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void
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test_compareandwrite_miscompare(void)
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{
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int i, n;
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unsigned j;
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int maxbl;
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CHECK_FOR_DATALOSS;
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CHECK_FOR_SBC;
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if (inq_bl && inq_bl->max_cmp) {
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maxbl = inq_bl->max_cmp;
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} else {
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/* Assume we are not limited */
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maxbl = 256;
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}
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n = 256;
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if (n + 0U > num_blocks)
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n = num_blocks;
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logging(LOG_VERBOSE, LOG_BLANK_LINE);
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logging(LOG_VERBOSE, "Test COMPARE_AND_WRITE of 1-%d blocks at the "
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"start of the LUN. One Byte miscompare in the final block.",
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n);
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for (i = 1; i <= n; i++) {
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logging(LOG_VERBOSE, "Write %d blocks of 'A' at LBA:0", i);
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memset(scratch, 'A', 2 * i * block_size);
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if (maximum_transfer_length && maximum_transfer_length < i) {
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break;
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}
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WRITE16(sd, 0, i * block_size,
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block_size, 0, 0, 0, 0, 0, scratch,
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EXPECT_STATUS_GOOD);
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logging(LOG_VERBOSE, "Change byte 27 from the end to 'C' so that it does not match.");
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scratch[i * block_size - 27] = 'C';
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if (i > maxbl) {
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logging(LOG_VERBOSE, "Number of blocks %d is greater than "
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"BlockLimits.MaximumCompareAndWriteLength(%d). "
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"Command should fail with INVALID_FIELD_IN_CDB",
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i, maxbl);
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COMPAREANDWRITE(sd, 0,
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scratch, 2 * i * block_size,
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block_size, 0, 0, 0, 0,
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EXPECT_INVALID_FIELD_IN_CDB);
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continue;
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}
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memset(scratch + i * block_size, 'B', i * block_size);
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logging(LOG_VERBOSE, "Overwrite %d blocks with 'B' "
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"at LBA:0 (if they all contain 'A')", i);
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COMPAREANDWRITE(sd, 0,
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scratch, 2 * i * block_size, block_size,
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0, 0, 0, 0,
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EXPECT_MISCOMPARE);
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logging(LOG_VERBOSE, "Read %d blocks at LBA:0 and verify "
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"they are still unchanged as 'A'", i);
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READ16(sd, NULL, 0, i * block_size,
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block_size, 0, 0, 0, 0, 0, scratch,
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EXPECT_STATUS_GOOD);
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for (j = 0; j < i * block_size; j++) {
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if (scratch[j] != 'A') {
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logging(LOG_VERBOSE, "[FAILED] Data changed "
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"eventhough there was a miscompare");
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CU_FAIL("Block was written to");
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return;
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}
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}
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}
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logging(LOG_VERBOSE, "Test COMPARE_AND_WRITE of 1-%d blocks at the "
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"end of the LUN", n);
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for (i = 1; i <= n; i++) {
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logging(LOG_VERBOSE, "Write %d blocks of 'A' at LBA:%" PRIu64,
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i, num_blocks - i);
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memset(scratch, 'A', 2 * i * block_size);
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if (maximum_transfer_length && maximum_transfer_length < i) {
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break;
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}
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WRITE16(sd, num_blocks - i, i * block_size,
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block_size, 0, 0, 0, 0, 0, scratch,
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EXPECT_STATUS_GOOD);
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logging(LOG_VERBOSE, "Change byte 27 from the end to 'C' so that it does not match.");
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scratch[i * block_size - 27] = 'C';
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if (i > maxbl) {
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logging(LOG_VERBOSE, "Number of blocks %d is greater than "
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"BlockLimits.MaximumCompareAndWriteLength(%d). "
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"Command should fail with INVALID_FIELD_IN_CDB",
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i, maxbl);
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COMPAREANDWRITE(sd, 0,
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scratch, 2 * i * block_size,
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block_size, 0, 0, 0, 0,
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EXPECT_INVALID_FIELD_IN_CDB);
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continue;
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}
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memset(scratch + i * block_size, 'B', i * block_size);
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logging(LOG_VERBOSE, "Overwrite %d blocks with 'B' "
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"at LBA:%" PRIu64 " (if they all contain 'A')",
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i, num_blocks - i);
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COMPAREANDWRITE(sd, num_blocks - i,
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scratch, 2 * i * block_size, block_size,
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0, 0, 0, 0,
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EXPECT_MISCOMPARE);
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logging(LOG_VERBOSE, "Read %d blocks at LBA:%" PRIu64
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"they are still unchanged as 'A'",
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i, num_blocks - i);
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READ16(sd, NULL, num_blocks - i, i * block_size,
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block_size, 0, 0, 0, 0, 0, scratch,
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EXPECT_STATUS_GOOD);
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for (j = 0; j < i * block_size; j++) {
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if (scratch[j] != 'A') {
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logging(LOG_VERBOSE, "[FAILED] Data changed "
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"eventhough there was a miscompare");
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CU_FAIL("Block was written to");
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return;
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}
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}
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}
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}
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