ssize_t write(int fd, const void *buf, size_t count)
{
if ((iscsi_fd_list[fd].is_iscsi == 1) && (iscsi_fd_list[fd].in_flight == 0)) {
uint64_t offset;
uint64_t num_blocks, lba;
struct scsi_task *task;
if (iscsi_fd_list[fd].dup2fd >= 0) {
return write(iscsi_fd_list[fd].dup2fd, buf, count);
}
if (iscsi_fd_list[fd].offset%iscsi_fd_list[fd].block_size) {
errno = EINVAL;
return -1;
}
if (count%iscsi_fd_list[fd].block_size) {
errno = EINVAL;
return -1;
}
iscsi_fd_list[fd].lbasd_cache_valid = 0;
offset = iscsi_fd_list[fd].offset;
num_blocks = count/iscsi_fd_list[fd].block_size;
lba = offset / iscsi_fd_list[fd].block_size;
/* Don't try to read beyond the last LBA */
if (lba >= iscsi_fd_list[fd].num_blocks) {
return 0;
}
/* Trim num_blocks requested to last lba */
if ((lba + num_blocks) > iscsi_fd_list[fd].num_blocks) {
num_blocks = iscsi_fd_list[fd].num_blocks - lba;
count = num_blocks * iscsi_fd_list[fd].block_size;
}
iscsi_fd_list[fd].in_flight = 1;
LD_ISCSI_DPRINTF(4,"write16_sync: lun %d, lba %"PRIu64", num_blocks: %"PRIu64", block_size: %d, offset: %"PRIu64" count: %lu",iscsi_fd_list[fd].lun,lba,num_blocks,iscsi_fd_list[fd].block_size,offset,(unsigned long)count);
task = iscsi_write16_sync(iscsi_fd_list[fd].iscsi, iscsi_fd_list[fd].lun, lba, (unsigned char *) buf, count, iscsi_fd_list[fd].block_size, 0, 0, 0, 0, 0);
iscsi_fd_list[fd].in_flight = 0;
if (task == NULL || task->status != SCSI_STATUS_GOOD) {
LD_ISCSI_DPRINTF(0,"failed to send write16 command");
errno = EIO;
return -1;
}
iscsi_fd_list[fd].offset += count;
scsi_free_scsi_task(task);
return count;
}
return real_write(fd, buf, count);
}
int T0300_readonly(const char *initiator, const char *url)
{
struct iscsi_context *iscsi;
struct scsi_task *task;
struct scsi_mode_sense *ms;
int ret, lun;
unsigned char data[4096];
struct unmap_list list[1];
int full_size;
ret = -1;
printf("0300_readonly:\n");
printf("==============\n");
if (show_info) {
printf("Test that all commands that modify the medium fail for readonly devices\n");
printf("1, WRITE10 at LUN 0 should fail.\n");
printf("2, WRITE12 at LUN 0 should fail.\n");
printf("3, WRITE16 at LUN 0 should fail.\n");
printf("4, WRITESAME10 at LUN 0 should fail.\n");
printf("5, WRITESAME16 at LUN 0 should fail.\n");
printf("6, WRITESAME10 with UNMAP at LUN 0 should fail (skipped if not thin-provisioned).\n");
printf("7, WRITESAME16 with UNMAP at LUN 0 should fail (skipped if not thin-provisioned).\n");
printf("8, UNMAP at LUN 0 should fail (skipped if not thin-provisioned).\n");
printf("9, WRITEVERIFY10 at LUN 0 should fail.\n");
printf("10, WRITEVERIFY12 at LUN 0 should fail.\n");
printf("11, WRITEVERIFY16 at LUN 0 should fail.\n");
printf("12, COMPAREANDWRITE at LUN 0 should fail.\n");
printf("13, ORWRITE at LUN 0 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;
}
if (!data_loss) {
printf("--dataloss flag is not set. Skipping test\n");
ret = -2;
goto finished;
}
/* This test is only valid for SBC devices */
if (device_type != SCSI_INQUIRY_PERIPHERAL_DEVICE_TYPE_DIRECT_ACCESS) {
printf("LUN is not SBC device. Skipping test\n");
return -2;
}
/* verify the device is readonly */
task = iscsi_modesense6_sync(iscsi, lun, 0, SCSI_MODESENSE_PC_CURRENT,
SCSI_MODESENSE_PAGECODE_RETURN_ALL_PAGES, 0,
4);
if (task == NULL) {
printf("Failed to send modesense6 command: %s\n", iscsi_get_error(iscsi));
goto finished;
}
full_size = scsi_datain_getfullsize(task);
if (full_size > task->datain.size) {
scsi_free_scsi_task(task);
task = iscsi_modesense6_sync(iscsi, lun, 0, SCSI_MODESENSE_PC_CURRENT,
SCSI_MODESENSE_PAGECODE_RETURN_ALL_PAGES, 0,
full_size);
if (task == NULL) {
printf("Failed to send modesense6 command: %s\n", iscsi_get_error(iscsi));
goto finished;
}
}
ms = scsi_datain_unmarshall(task);
if (ms == NULL) {
printf("failed to unmarshall mode sense datain blob\n");
scsi_free_scsi_task(task);
goto finished;
}
if (!(ms->device_specific_parameter & 0x80)) {
printf("Device is not read-only. Skipping test\n");
ret = -2;
goto finished;
}
scsi_free_scsi_task(task);
ret = 0;
/* Write one block at lba 0 */
printf("WRITE10 to LUN 0 ... ");
task = iscsi_write10_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITE10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITE10 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITE10 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITE12 to LUN 0 ... ");
task = iscsi_write12_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITE12 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITE12 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITE12 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITE16 to LUN 0 ... ");
task = iscsi_write16_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITE16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITE16 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITE16 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITESAME10 to LUN 0 ... ");
task = iscsi_writesame10_sync(iscsi, lun, data, block_size, 0, 1, 0, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME10 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITESAME10 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITESAME16 to LUN 0 ... ");
task = iscsi_writesame16_sync(iscsi, lun, data, block_size, 0, 1, 0, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME16 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITESAME16 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* UNMAP one block at lba 0 */
printf("WRITESAME10 to UNMAP LUN 0 ... ");
if (lbpme == 0) {
printf("LUN is not thin-provisioned. [SKIPPED]\n");
goto finished;
}
task = iscsi_writesame10_sync(iscsi, lun, data, block_size, 0, 1, 0, 1, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME10 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITESAME10 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* UNMAP one block at lba 0 */
printf("WRITESAME16 to UNMAP LUN 0 ... ");
if (lbpme == 0) {
printf("LUN is not thin-provisioned. [SKIPPED]\n");
goto finished;
}
task = iscsi_writesame16_sync(iscsi, lun, data, block_size, 0, 1, 0, 1, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME16 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITESAME16 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* UNMAP one block at lba 0 */
printf("UNMAP LUN 0 ... ");
if (lbpme == 0) {
printf("LUN is not thin-provisioned. [SKIPPED]\n");
goto finished;
}
list[0].lba = 0;
list[0].num = 1;
task = iscsi_unmap_sync(iscsi, lun, 0, 0, &list[0], 1);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send UNMAP command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("UNMAP command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("UNMAP failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITEVERIFY10 to LUN 0 ... ");
task = iscsi_writeverify10_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITEVERIFY10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITEVERIFY10 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITEVERIFY10 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITEVERIFY12 to LUN 0 ... ");
task = iscsi_writeverify12_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITEVERIFY12 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITEVERIFY12 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITEVERIFY12 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("WRITEVERIFY16 to LUN 0 ... ");
task = iscsi_writeverify16_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITEVERIFY16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITEVERIFY16 command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("WRITEVERIFY16 failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("COMPAREWRITE to LUN 0 ... ");
task = iscsi_compareandwrite_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send COMPAREANDWRITE command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("COMPAREANDWRITE command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("COMPAREANDWRITE failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
printf("[OK]\n");
/* Write one block at lba 0 */
printf("ORWRITE to LUN 0 ... ");
task = iscsi_orwrite_sync(iscsi, lun, 0, data, block_size, block_size, 0, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send ORWRITE command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status == SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("ORWRITE command should fail when writing to readonly devices\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (task->status != SCSI_STATUS_CHECK_CONDITION
|| task->sense.key != SCSI_SENSE_DATA_PROTECTION
|| task->sense.ascq != SCSI_SENSE_ASCQ_WRITE_PROTECTED) {
printf("[FAILED]\n");
printf("ORWRITE failed with the wrong sense code. Should fail with DATA_PROTECTION/WRITE_PROTECTED\n");
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;
}
