- dbg("%s evpd %d, page 0x%x\n", dev_scsi->kernel, evpd, page);
-
- memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
- io_hdr.interface_id = 'S';
- io_hdr.cmd_len = sizeof(inq_cmd);
- io_hdr.mx_sb_len = sizeof(sense);
- io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
- io_hdr.dxfer_len = buflen;
- io_hdr.dxferp = buf;
- io_hdr.cmdp = inq_cmd;
- io_hdr.sbp = sense;
- io_hdr.timeout = DEF_TIMEOUT;
-
- if (ioctl(fd, SG_IO, &io_hdr) < 0) {
- info("%s: ioctl failed: %s\n", dev_scsi->kernel, strerror(errno));
- retval = -1;
+ dbg(udev, "%s evpd %d, page 0x%x\n", dev_scsi->kernel, evpd, page);
+
+ if (dev_scsi->use_sg == 4) {
+ struct sg_io_v4 io_v4;
+
+ memset(&io_v4, 0, sizeof(struct sg_io_v4));
+ io_v4.guard = 'Q';
+ io_v4.protocol = BSG_PROTOCOL_SCSI;
+ io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
+ io_v4.request_len = sizeof(inq_cmd);
+ io_v4.request = (uintptr_t)inq_cmd;
+ io_v4.max_response_len = sizeof(sense);
+ io_v4.response = (uintptr_t)sense;
+ io_v4.din_xfer_len = buflen;
+ io_v4.din_xferp = (uintptr_t)buf;
+ io_buf = (void *)&io_v4;
+ } else {
+ struct sg_io_hdr io_hdr;
+
+ memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
+ io_hdr.interface_id = 'S';
+ io_hdr.cmd_len = sizeof(inq_cmd);
+ io_hdr.mx_sb_len = sizeof(sense);
+ io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+ io_hdr.dxfer_len = buflen;
+ io_hdr.dxferp = buf;
+ io_hdr.cmdp = inq_cmd;
+ io_hdr.sbp = sense;
+ io_hdr.timeout = DEF_TIMEOUT;
+ io_buf = (void *)&io_hdr;
+ }
+
+ retval = ioctl(fd, SG_IO, io_buf);
+ if (retval < 0) {
+ if ((errno == EINVAL || errno == ENOSYS) && dev_scsi->use_sg == 4) {
+ dev_scsi->use_sg = 3;
+ goto resend;
+ }
+ info(udev, "%s: ioctl failed: %s\n", dev_scsi->kernel, strerror(errno));