scsiata.cpp

硬盘各项性能的测试,如温度容量版本健康度型号

        feature = ATA_SMART_AUTO_OFFLINE;
        sector_count = select;   // YET NOTE - THIS IS A NON-DATA COMMAND!!
        break;
    case AUTOSAVE:
        feature = ATA_SMART_AUTOSAVE;
        sector_count = select;   // YET NOTE - THIS IS A NON-DATA COMMAND!!
        break;
    case IMMEDIATE_OFFLINE:
        feature = ATA_SMART_IMMEDIATE_OFFLINE;
        lba_low = select;
        break;
    case STATUS_CHECK:
        // This command uses HDIO_DRIVE_TASK and has different syntax than
        // the other commands.
        feature = ATA_SMART_STATUS;      /* SMART RETURN STATUS */
        ck_cond = 1;
        break;
    default:
        pout("Unrecognized command %d in sat_command_interface()\n"
             "Please contact " PACKAGE_BUGREPORT "\n", command);
        errno=ENOSYS;
        return -1;
    }
    if (ATA_SMART_CMD == ata_command) {
        lba_mid = 0x4f;
        lba_high = 0xc2;
    }

    if ((SAT_ATA_PASSTHROUGH_12LEN == con->satpassthrulen) ||
        (SAT_ATA_PASSTHROUGH_16LEN == con->satpassthrulen))
        passthru_size = con->satpassthrulen;
    cdb[0] = (SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ?
             SAT_ATA_PASSTHROUGH_12 : SAT_ATA_PASSTHROUGH_16;

    cdb[1] = (protocol << 1) | extend;
    cdb[2] = (ck_cond << 5) | (t_dir << 3) |
             (byte_block << 2) | t_length;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 3 : 4] = feature;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 4 : 6] = sector_count;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 5 : 8] = lba_low;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 6 : 10] = lba_mid;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 7 : 12] = lba_high;
    cdb[(SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ? 9 : 14] = ata_command;

    memset(&io_hdr, 0, sizeof(io_hdr));
    if (0 == t_length) {
        io_hdr.dxfer_dir = DXFER_NONE;
        io_hdr.dxfer_len = 0;
    } else if (t_dir) {         /* from device */
        io_hdr.dxfer_dir = DXFER_FROM_DEVICE;
        io_hdr.dxfer_len = copydata;
        io_hdr.dxferp = (unsigned char *)data;
        memset(data, 0, copydata); /* prefill with zeroes */
    } else {                    /* to device */
        io_hdr.dxfer_dir = DXFER_TO_DEVICE;
        io_hdr.dxfer_len = outlen;
        io_hdr.dxferp = (unsigned char *)data;
    }
    io_hdr.cmnd = cdb;
    io_hdr.cmnd_len = passthru_size;
    io_hdr.sensep = sense;
    io_hdr.max_sense_len = sizeof(sense);
    io_hdr.timeout = SCSI_TIMEOUT_DEFAULT;

    status = do_scsi_cmnd_io(device, &io_hdr, con->reportscsiioctl);
    if (0 != status) {
        if (con->reportscsiioctl > 0)
            pout("sat_command_interface: do_scsi_cmnd_io() failed, "
                 "status=%d\n", status);
        return -1;
    }
    ardp = NULL;
    ard_len = 0;
    have_sense = sg_scsi_normalize_sense(io_hdr.sensep, io_hdr.resp_sense_len,
                                         &ssh);
    if (have_sense) {
        /* look for SAT ATA Return Descriptor */
        ardp = sg_scsi_sense_desc_find(io_hdr.sensep,
                                       io_hdr.resp_sense_len,
                                       ATA_RETURN_DESCRIPTOR);
        if (ardp) {
            ard_len = ardp[1] + 2;
            if (ard_len < 12)
                ard_len = 12;
            else if (ard_len > 14)
                ard_len = 14;
        }
        scsi_do_sense_disect(&io_hdr, &sinfo);
        status = scsiSimpleSenseFilter(&sinfo);
        if (0 != status) {
            if (con->reportscsiioctl > 0) {
                pout("sat_command_interface: scsi error: %s\n",
                     scsiErrString(status));
                if (ardp && (con->reportscsiioctl > 1)) {
                    pout("Values from ATA Return Descriptor are:\n");
                    dStrHex((const char *)ardp, ard_len, 1);
                }
            }
            if (t_dir && (t_length > 0) && (copydata > 0))
                memset(data, 0, copydata);
            return -1;
        }
    }
    if (ck_cond) {     /* expecting SAT specific sense data */
        if (have_sense) {
            if (ardp) {
                if (con->reportscsiioctl > 1) {
                    pout("Values from ATA Return Descriptor are:\n");
                    dStrHex((const char *)ardp, ard_len, 1);
                }
                if (ATA_CHECK_POWER_MODE == ata_command)
                    data[0] = ardp[5];      /* sector count (0:7) */
                else if (STATUS_CHECK == command) {
                    if ((ardp[9] == 0x4f) && (ardp[11] == 0xc2))
                        return 0;    /* GOOD smart status */
                    if ((ardp[9] == 0xf4) && (ardp[11] == 0x2c))
                        return 1;    // smart predicting failure, "bad" status
                    // We haven't gotten output that makes sense so
                    // print out some debugging info
                    syserror("Error SMART Status command failed");
                    pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
                    pout("Values from ATA Return Descriptor are:\n");
                    dStrHex((const char *)ardp, ard_len, 1);
                    return -1;
                }
            }
        }
        if (ardp == NULL)
            ck_cond = 0;       /* not the type of sense data expected */
    }
    if (0 == ck_cond) {
        if (have_sense) {
            if ((ssh.response_code >= 0x72) &&
                ((SCSI_SK_NO_SENSE == ssh.sense_key) ||
                 (SCSI_SK_RECOVERED_ERR == ssh.sense_key)) &&
                (0 == ssh.asc) &&
                (SCSI_ASCQ_ATA_PASS_THROUGH == ssh.ascq)) {
                if (ardp) {
                    if (con->reportscsiioctl > 0) {
                        pout("Values from ATA Return Descriptor are:\n");
                        dStrHex((const char *)ardp, ard_len, 1);
                    }
                    return -1;
                }
            }
        }
    }
    return 0;
}

/* Attempt an IDENTIFY DEVICE ATA command via SATL when packet_interface
   is 0 otherwise attempt IDENTIFY PACKET DEVICE. If successful
   return 1, else 0 */
int has_sat_pass_through(int device, int packet_interface)
{
    char data[512];
    smart_command_set command;

    command = packet_interface ? PIDENTIFY : IDENTIFY;
    if (0 == sat_command_interface(device, command, 0, data))
        return 1;
    else
        return 0;
}

/* Next two functions are borrowed from sg_lib.c in the sg3_utils
   package. Same copyrght owner, same license as this file. */
int sg_scsi_normalize_sense(const unsigned char * sensep, int sb_len,
                            struct sg_scsi_sense_hdr * sshp)
{
    if (sshp)
        memset(sshp, 0, sizeof(struct sg_scsi_sense_hdr));
    if ((NULL == sensep) || (0 == sb_len) || (0x70 != (0x70 & sensep[0])))
        return 0;
    if (sshp) {
        sshp->response_code = (0x7f & sensep[0]);
        if (sshp->response_code >= 0x72) {  /* descriptor format */
            if (sb_len > 1)
                sshp->sense_key = (0xf & sensep[1]);
            if (sb_len > 2)
                sshp->asc = sensep[2];
            if (sb_len > 3)
                sshp->ascq = sensep[3];
            if (sb_len > 7)
                sshp->additional_length = sensep[7];
        } else {                              /* fixed format */
            if (sb_len > 2)
                sshp->sense_key = (0xf & sensep[2]);
            if (sb_len > 7) {
                sb_len = (sb_len < (sensep[7] + 8)) ? sb_len :
                                                      (sensep[7] + 8);
                if (sb_len > 12)
                    sshp->asc = sensep[12];
                if (sb_len > 13)
                    sshp->ascq = sensep[13];
            }
        }
    }
    return 1;
}


const unsigned char * sg_scsi_sense_desc_find(const unsigned char * sensep,
                                              int sense_len, int desc_type)
{
    int add_sen_len, add_len, desc_len, k;
    const unsigned char * descp;

    if ((sense_len < 8) || (0 == (add_sen_len = sensep[7])))
        return NULL;
    if ((sensep[0] < 0x72) || (sensep[0] > 0x73))
        return NULL;
    add_sen_len = (add_sen_len < (sense_len - 8)) ?
                         add_sen_len : (sense_len - 8);
    descp = &sensep[8];
    for (desc_len = 0, k = 0; k < add_sen_len; k += desc_len) {
        descp += desc_len;
        add_len = (k < (add_sen_len - 1)) ? descp[1]: -1;
        desc_len = add_len + 2;
        if (descp[0] == desc_type)
            return descp;
        if (add_len < 0) /* short descriptor ?? */
            break;
    }
    return NULL;
}