os_linux.cpp

硬盘各项性能的测试,如温度容量版本健康度型号

    io_hdr.dxferp = iop->dxferp;
    io_hdr.cmdp = iop->cmnd;
    io_hdr.sbp = iop->sensep;
    /* sg_io_hdr interface timeout has millisecond units. Timeout of 0
       defaults to 60 seconds. */
    io_hdr.timeout = ((0 == iop->timeout) ? 60 : iop->timeout) * 1000;
    switch (iop->dxfer_dir) {
        case DXFER_NONE:
            io_hdr.dxfer_direction = SG_DXFER_NONE;
            break;
        case DXFER_FROM_DEVICE:
            io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
            break;
        case DXFER_TO_DEVICE:
            io_hdr.dxfer_direction = SG_DXFER_TO_DEV;
            break;
        default:
            pout("do_scsi_cmnd_io: bad dxfer_dir\n");
            return -EINVAL;
    }
    iop->resp_sense_len = 0;
    iop->scsi_status = 0;
    iop->resid = 0;
    if (ioctl(dev_fd, SG_IO, &io_hdr) < 0) {
        if (report && (! unknown))
            pout("  SG_IO ioctl failed, errno=%d [%s]\n", errno,
                 strerror(errno));
        return -errno;
    }
    iop->resid = io_hdr.resid;
    iop->scsi_status = io_hdr.status;
    if (report > 0) {
        pout("  scsi_status=0x%x, host_status=0x%x, driver_status=0x%x\n"
             "  info=0x%x  duration=%d milliseconds  resid=%d\n", io_hdr.status,
             io_hdr.host_status, io_hdr.driver_status, io_hdr.info,
             io_hdr.duration, io_hdr.resid);
        if (report > 1) {
            if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
                int trunc, len;

		len = iop->dxfer_len - iop->resid;
		trunc = (len > 256) ? 1 : 0;
                if (len > 0) {
                    pout("  Incoming data, len=%d%s:\n", len,
                         (trunc ? " [only first 256 bytes shown]" : ""));
                    dStrHex((const char*)iop->dxferp, (trunc ? 256 : len),
                            1);
                } else
                    pout("  Incoming data trimmed to nothing by resid\n");
            }
        }
    }

    if (io_hdr.info | SG_INFO_CHECK) { /* error or warning */
        int masked_driver_status = (LSCSI_DRIVER_MASK & io_hdr.driver_status);

        if (0 != io_hdr.host_status) {
            if ((LSCSI_DID_NO_CONNECT == io_hdr.host_status) ||
                (LSCSI_DID_BUS_BUSY == io_hdr.host_status) ||
                (LSCSI_DID_TIME_OUT == io_hdr.host_status))
                return -ETIMEDOUT;
            else
                return -EIO;    /* catch all */
        }
        if (0 != masked_driver_status) {
            if (LSCSI_DRIVER_TIMEOUT == masked_driver_status)
                return -ETIMEDOUT;
            else if (LSCSI_DRIVER_SENSE != masked_driver_status)
                return -EIO;
        }
        if (LSCSI_DRIVER_SENSE == masked_driver_status)
            iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
        iop->resp_sense_len = io_hdr.sb_len_wr;
        if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
            iop->sensep && (iop->resp_sense_len > 0)) {
            if (report > 1) {
                pout("  >>> Sense buffer, len=%d:\n",
                     (int)iop->resp_sense_len);
                dStrHex((const char *)iop->sensep, iop->resp_sense_len , 1);
            }
        }
        if (report) {
            if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
                if ((iop->sensep[0] & 0x7f) > 0x71)
                    pout("  status=%x: [desc] sense_key=%x asc=%x ascq=%x\n",
                         iop->scsi_status, iop->sensep[1] & 0xf,
                         iop->sensep[2], iop->sensep[3]);
                else
                    pout("  status=%x: sense_key=%x asc=%x ascq=%x\n",
                         iop->scsi_status, iop->sensep[2] & 0xf,
                         iop->sensep[12], iop->sensep[13]);
            }
            else
                pout("  status=0x%x\n", iop->scsi_status);
        }
    }
    return 0;
#endif
}

struct linux_ioctl_send_command
{
    int inbufsize;
    int outbufsize;
    UINT8 buff[MAX_DXFER_LEN + 16];
};

/* The Linux SCSI_IOCTL_SEND_COMMAND ioctl is primitive and it doesn't
 * support: CDB length (guesses it from opcode), resid and timeout.
 * Patches in Linux 2.4.21 and 2.5.70 to extend SEND DIAGNOSTIC timeout
 * to 2 hours in order to allow long foreground extended self tests. */
static int sisc_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report)
{
    struct linux_ioctl_send_command wrk;
    int status, buff_offset;
    size_t len;

    memcpy(wrk.buff, iop->cmnd, iop->cmnd_len);
    buff_offset = iop->cmnd_len;
    if (report > 0) {
        int k, j;
        const unsigned char * ucp = iop->cmnd;
        const char * np;
        char buff[256];
        const int sz = (int)sizeof(buff);

        np = scsi_get_opcode_name(ucp[0]);
        j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
        for (k = 0; k < (int)iop->cmnd_len; ++k)
            j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
        if ((report > 1) &&
            (DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
            int trunc = (iop->dxfer_len > 256) ? 1 : 0;

            j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n  Outgoing "
                          "data, len=%d%s:\n", (int)iop->dxfer_len,
                          (trunc ? " [only first 256 bytes shown]" : ""));
            dStrHex((const char *)iop->dxferp,
                    (trunc ? 256 : iop->dxfer_len) , 1);
        }
        else
            j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
        pout(buff);
    }
    switch (iop->dxfer_dir) {
        case DXFER_NONE:
            wrk.inbufsize = 0;
            wrk.outbufsize = 0;
            break;
        case DXFER_FROM_DEVICE:
            wrk.inbufsize = 0;
            if (iop->dxfer_len > MAX_DXFER_LEN)
                return -EINVAL;
            wrk.outbufsize = iop->dxfer_len;
            break;
        case DXFER_TO_DEVICE:
            if (iop->dxfer_len > MAX_DXFER_LEN)
                return -EINVAL;
            memcpy(wrk.buff + buff_offset, iop->dxferp, iop->dxfer_len);
            wrk.inbufsize = iop->dxfer_len;
            wrk.outbufsize = 0;
            break;
        default:
            pout("do_scsi_cmnd_io: bad dxfer_dir\n");
            return -EINVAL;
    }
    iop->resp_sense_len = 0;
    iop->scsi_status = 0;
    iop->resid = 0;
    status = ioctl(dev_fd, SCSI_IOCTL_SEND_COMMAND, &wrk);
    if (-1 == status) {
        if (report)
            pout("  SCSI_IOCTL_SEND_COMMAND ioctl failed, errno=%d [%s]\n",
                 errno, strerror(errno));
        return -errno;
    }
    if (0 == status) {
        if (report > 0)
            pout("  status=0\n");
        if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
            memcpy(iop->dxferp, wrk.buff, iop->dxfer_len);
            if (report > 1) {
                int trunc = (iop->dxfer_len > 256) ? 1 : 0;

                pout("  Incoming data, len=%d%s:\n", (int)iop->dxfer_len,
                     (trunc ? " [only first 256 bytes shown]" : ""));
                dStrHex((const char*)iop->dxferp,
                        (trunc ? 256 : iop->dxfer_len) , 1);
            }
        }
        return 0;
    }
    iop->scsi_status = status & 0x7e; /* bits 0 and 7 used to be for vendors */
    if (LSCSI_DRIVER_SENSE == ((status >> 24) & 0xf))
        iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
    len = (SEND_IOCTL_RESP_SENSE_LEN < iop->max_sense_len) ?
                SEND_IOCTL_RESP_SENSE_LEN : iop->max_sense_len;
    if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
        iop->sensep && (len > 0)) {
        memcpy(iop->sensep, wrk.buff, len);
        iop->resp_sense_len = len;
        if (report > 1) {
            pout("  >>> Sense buffer, len=%d:\n", (int)len);
            dStrHex((const char *)wrk.buff, len , 1);
        }
    }
    if (report) {
        if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
            pout("  status=%x: sense_key=%x asc=%x ascq=%x\n", status & 0xff,
                 wrk.buff[2] & 0xf, wrk.buff[12], wrk.buff[13]);
        }
        else
            pout("  status=0x%x\n", status);
    }
    if (iop->scsi_status > 0)
        return 0;
    else {
        if (report > 0)
            pout("  ioctl status=0x%x but scsi status=0, fail with EIO\n",
                 status);
        return -EIO;      /* give up, assume no device there */
    }
}

/* SCSI command transmission interface function, linux version.
 * Returns 0 if SCSI command successfully launched and response
 * received. Even when 0 is returned the caller should check
 * scsi_cmnd_io::scsi_status for SCSI defined errors and warnings
 * (e.g. CHECK CONDITION). If the SCSI command could not be issued
 * (e.g. device not present or timeout) or some other problem
 * (e.g. timeout) then returns a negative errno value */
static int do_normal_scsi_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop,
                                  int report)
{
    int res;

    /* implementation relies on static sg_io_state variable. If not
     * previously set tries the SG_IO ioctl. If that succeeds assume
     * that SG_IO ioctl functional. If it fails with an errno value
     * other than ENODEV (no device) or permission then assume
     * SCSI_IOCTL_SEND_COMMAND is the only option. */
    switch (sg_io_state) {
    case SG_IO_PRESENT_UNKNOWN:
        /* ignore report argument */
        if (0 == (res = sg_io_cmnd_io(dev_fd, iop, report, 1))) {
            sg_io_state = SG_IO_PRESENT_YES;
            return 0;
        } else if ((-ENODEV == res) || (-EACCES == res) || (-EPERM == res))
            return res;         /* wait until we see a device */
        sg_io_state = SG_IO_PRESENT_NO;
        /* drop through by design */
    case SG_IO_PRESENT_NO:
        return sisc_cmnd_io(dev_fd, iop, report);
    case SG_IO_PRESENT_YES:
        return sg_io_cmnd_io(dev_fd, iop, report, 0);
    default:
        pout(">>>> do_scsi_cmnd_io: bad sg_io_state=%d\n", sg_io_state);
        sg_io_state = SG_IO_PRESENT_UNKNOWN;
        return -EIO;    /* report error and reset state */
    }
}

/* Check and call the right interface. Maybe when the do_generic_scsi_cmd_io interface is better
   we can take off this crude way of calling the right interface */
 int do_scsi_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report)
 {
     switch(con->controller_type)
     {
         case CONTROLLER_CCISS:
#ifdef HAVE_LINUX_CCISS_IOCTL_H
             return cciss_io_interface(dev_fd, con->controller_port-1, iop, report);
#else
             {
                 static int warned = 0;
                 if (!warned) {
                     pout("CCISS support is not available in this build of smartmontools,\n"
                          "<linux/cciss_ioctl.h> was not available at build time.\n\n");
                     warned = 1;
                 }
             }
             errno = ENOSYS;
             return -1;
#endif
             // not reached
             break;
         default:
             return do_normal_scsi_cmnd_io(dev_fd, iop, report);
             // not reached
             break;
     }
 }

// >>>>>> End of general SCSI specific linux code

// prototype
void printwarning(smart_command_set command);

// PURPOSE
//   This is an interface routine meant to isolate the OS dependent
//   parts of the code, and to provide a debugging interface.  Each
//   different port and OS needs to provide it's own interface.  This
//   is the linux interface to the 3ware 3w-xxxx driver.  It allows ATA
//   commands to be passed through the SCSI driver.
// DETAILED DESCRIPTION OF ARGUMENTS
//   fd: is the file descriptor provided by open()
//   disknum is the disk number (0 to 15) in the RAID array
//   escalade_type indicates the type of controller type, and if scsi or char interface is used
//   command: defines the different operations.
//   select: additional input data if needed (which log, which type of
//           self-test).
//   data:   location to write output data, if needed (512 bytes).
//   Note: not all commands use all arguments.
// RETURN VALUES
//  -1 if the command failed
//   0 if the command succeeded,
//   STATUS_CHECK routine:
//  -1 if the command failed
//   0 if the command succeeded and disk SMART status is "OK"
//   1 if the command succeeded and disk SMART status is "FAILING"


/* 512 is the max payload size: increase if needed */
#define BUFFER_LEN_678K      ( sizeof(TW_Ioctl)                  ) // 1044 unpacked, 1041 packed
#define BUFFER_LEN_678K_CHAR ( sizeof(TW_New_Ioctl)+512-1        ) // 1539 unpacked, 1536 packed
#define BUFFER_LEN_9000      ( sizeof(TW_Ioctl_Buf_Apache)+512-1 ) // 2051 unpacked, 2048 packed
#define TW_IOCTL_BUFFER_SIZE ( MAX(MAX(BUFFER_LEN_678K, BUFFER_LEN_9000), BUFFER_LEN_678K_CHAR) )

int escalade_command_interface(int fd, int disknum, int escalade_type, smart_command_set command, int select, char *data){

  // return value and buffer for ioctl()
  int  ioctlreturn, readdata=0;

  // Used by both the SCSI and char interfaces
  TW_Passthru *passthru=NULL;
  char ioctl_buffer[TW_IOCTL_BUFFER_SIZE];

  // only used for SCSI device interface
  TW_Ioctl   *tw_ioctl=NULL;
  TW_Output *tw_output=NULL;

  // only used for 6000/7000/8000 char device interface
  TW_New_Ioctl *tw_ioctl_char=NULL;

  // only used for 9000 character device interface
  TW_Ioctl_Buf_Apache *tw_ioctl_apache=NULL;

  memset(ioctl_buffer, 0, TW_IOCTL_BUFFER_SIZE);

  if (escalade_type==CONTROLLER_3WARE_9000_CHAR) {
    tw_ioctl_apache                               = (TW_Ioctl_Buf_Apache *)ioctl_buffer;
    tw_ioctl_apache->driver_command.control_code  = TW_IOCTL_FIRMWARE_PASS_THROUGH;
    tw_ioctl_apache->driver_command.buffer_length = 512; /* payload size */
    passthru                                      = (TW_Passthru *)&(tw_ioctl_apache->firmware_command.command.oldcommand);
  }
  else if (escalade_type==CONTROLLER_3WARE_678K_CHAR) {
    tw_ioctl_char                                 = (TW_New_Ioctl *)ioctl_buffer;
    tw_ioctl_char->data_buffer_length             = 512;
    passthru                                      = (TW_Passthru *)&(tw_ioctl_char->firmware_command);
  }
  else if (escalade_type==CONTROLLER_3WARE_678K) {
    tw_ioctl                                      = (TW_Ioctl *)ioctl_buffer;
    tw_ioctl->cdb[0]                              = TW_IOCTL;