/* Helper function for command completion. */
static void scsi_command_complete_noio(SCSIGenericReq *r, int ret)
{
int status;
SCSISense sense;
assert(r->req.aiocb == NULL);
if (r->req.io_canceled) {
scsi_req_cancel_complete(&r->req);
goto done;
}
status = sg_io_sense_from_errno(-ret, &r->io_header, &sense);
if (status == CHECK_CONDITION) {
if (r->io_header.driver_status & SG_ERR_DRIVER_SENSE) {
r->req.sense_len = r->io_header.sb_len_wr;
} else {
scsi_req_build_sense(&r->req, sense);
}
}
DPRINTF("Command complete 0x%p tag=0x%x status=%d\n",
r, r->req.tag, status);
scsi_req_complete(&r->req, status);
done:
scsi_req_unref(&r->req);
}
static int do_sgio_worker(void *opaque)
{
PRHelperSGIOData *data = opaque;
struct sg_io_hdr io_hdr;
int ret;
int status;
SCSISense sense_code;
memset(data->sense, 0, PR_HELPER_SENSE_SIZE);
memset(&io_hdr, 0, sizeof(io_hdr));
io_hdr.interface_id = 'S';
io_hdr.cmd_len = PR_HELPER_CDB_SIZE;
io_hdr.cmdp = (uint8_t *)data->cdb;
io_hdr.sbp = data->sense;
io_hdr.mx_sb_len = PR_HELPER_SENSE_SIZE;
io_hdr.timeout = 1;
io_hdr.dxfer_direction = data->dir;
io_hdr.dxferp = (char *)data->buf;
io_hdr.dxfer_len = data->sz;
ret = ioctl(data->fd, SG_IO, &io_hdr);
status = sg_io_sense_from_errno(ret < 0 ? errno : 0, &io_hdr,
&sense_code);
if (status == GOOD) {
data->sz -= io_hdr.resid;
} else {
data->sz = 0;
}
if (status == CHECK_CONDITION &&
!(io_hdr.driver_status & SG_ERR_DRIVER_SENSE)) {
scsi_build_sense(data->sense, sense_code);
}
return status;
}
