static int ibmvio_inquiry(int host_no, struct scsi_cmd *cmd)
{
uint8_t *data, *scb = cmd->scb;
unsigned char key = ILLEGAL_REQUEST;
uint16_t asc = ASC_INVALID_FIELD_IN_CDB;
uint32_t len;
if (((scb[1] & 0x3) == 0x3) || (!(scb[1] & 0x3) && scb[2]))
goto sense;
dprintf("%x %x\n", scb[1], scb[2]);
if (scb[1] & 0x3)
return spc_inquiry(host_no, cmd);
data = scsi_get_in_buffer(cmd);
len = __ibmvio_inquiry(host_no, cmd, data);
len = min_t(int, len, scb[4]);
scsi_set_in_resid_by_actual(cmd, len);
if (cmd->dev->lun != cmd->dev_id)
data[0] = TYPE_NO_LUN;
return SAM_STAT_GOOD;
sense:
scsi_set_in_resid_by_actual(cmd, 0);
sense_data_build(cmd, key, asc);
return SAM_STAT_CHECK_CONDITION;
}
static int resp_var_read(struct scsi_cmd *cmd, uint8_t *buf, uint32_t length,
int *transferred)
{
struct ssc_info *ssc = dtype_priv(cmd->dev);
struct blk_header_info *h = &ssc->c_blk;
int ret = 0, result = SAM_STAT_GOOD;
length = min(length, get_unaligned_be24(&cmd->scb[2]));
*transferred = 0;
if (length != h->blk_sz) {
uint8_t info[4];
int val = length - h->blk_sz;
put_unaligned_be32(val, info);
if (h->blk_type == BLK_EOD)
sense_data_build(cmd, 0x40 | BLANK_CHECK,
NO_ADDITIONAL_SENSE);
else
ssc_sense_data_build(cmd, NO_SENSE | 0x20,
NO_ADDITIONAL_SENSE,
info, sizeof(info));
if (length > h->blk_sz)
scsi_set_in_resid_by_actual(cmd, length - h->blk_sz);
else
scsi_set_in_resid_by_actual(cmd, 0);
length = min(length, h->blk_sz);
result = SAM_STAT_CHECK_CONDITION;
if (!length)
goto out;
}
ret = pread64(cmd->dev->fd, buf, length, h->curr + SSC_BLK_HDR_SIZE);
if (ret != length) {
sense_data_build(cmd, MEDIUM_ERROR, ASC_READ_ERROR);
result = SAM_STAT_CHECK_CONDITION;
goto out;
}
*transferred = length;
ret = skip_next_header(cmd->dev);
if (ret) {
sense_data_build(cmd, MEDIUM_ERROR, ASC_MEDIUM_FORMAT_CORRUPT);
result = SAM_STAT_CHECK_CONDITION;
}
out:
return result;
}
static int ssc_rw(int host_no, struct scsi_cmd *cmd)
{
int ret;
unsigned char key = ILLEGAL_REQUEST;
uint16_t asc = ASC_LUN_NOT_SUPPORTED;
ret = device_reserved(cmd);
if (ret)
return SAM_STAT_RESERVATION_CONFLICT;
cmd->scsi_cmd_done = target_cmd_io_done;
ret = cmd->dev->bst->bs_cmd_submit(cmd);
if (ret) {
key = HARDWARE_ERROR;
asc = ASC_INTERNAL_TGT_FAILURE;
} else {
set_cmd_mmapio(cmd);
return SAM_STAT_GOOD;
}
cmd->offset = 0;
scsi_set_in_resid_by_actual(cmd, 0);
scsi_set_out_resid_by_actual(cmd, 0);
sense_data_build(cmd, key, asc);
return SAM_STAT_CHECK_CONDITION;
}
