C++ (Cpp) sg_io_sense_from_errno Examples

Example #1

File: scsi-generic.c Project: iazhuo/qemu

/* 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);
}

Example #2

File: qemu-pr-helper.c Project: OSLL/qemu-xtensa

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;
}