scsi-changer-driver.c

开源备份软件源码 AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that a

static char rcsid[] = "$Id: scsi-changer-driver.c,v 1.52 2006/07/21 00:25:50 martinea Exp $";
/*
 * Interface to control a tape robot/library connected to the SCSI bus
 *
 * Copyright (c) Thomas Hepper [e-mail]
 */

#include "amanda.h"

#include "arglist.h"

#include "scsi-defs.h"

#include "tapeio.h"

extern FILE *debug_file;
extern changer_t *changer;    /* Needed for the infos about emubarcode and labelfile */

int PrintInquiry(SCSIInquiry_T *);
int GenericElementStatus(int DeviceFD, int InitStatus);
int SDXElementStatus(int DeviceFD, int InitStatus);
int DLT448ElementStatus(int DeviceFD, int InitStatus);
ElementInfo_T *LookupElement(int addr);
int GenericResetStatus(int DeviceFD);
int RequestSense(int, ExtendedRequestSense_T *, int  );
void dump_hex(u_char *, size_t, int, int);
void TerminateString(char *string, size_t length);
void ChgExit(char *, char *, int);
int BarCode(int fd);
int LogSense(int fd);
int SenseHandler(int fd, u_char flag, u_char SenseKey, u_char AdditionalSenseCode, u_char AdditionalSenseCodeQualifier, RequestSense_T *buffer);

int SCSI_AlignElements(int DeviceFD, size_t MTE, size_t DTE, size_t STE);

int DoNothing0(void);
int DoNothing1(int);
int DoNothing2(int, int);
int DoNothing3(int, int, int);

int GenericMove(int, int, int);
int SDXMove(int, int, int);
int CheckMove(ElementInfo_T *from, ElementInfo_T *to);
int GenericRewind(int);
/* int GenericStatus(void); */
int GenericFree(void);
int TapeStatus(void);                   /* Is the tape loaded ? */
int DLT4000Eject(char *Device, int type);
int GenericEject(char *Device, int type);
int SCSI_LogSenseClean(char *Device);           /* Does the tape need a clean */
int GenericClean(char *Device);                 /* Does the tape need a clean */
int GenericBarCode(int DeviceFD);               /* Do we have Barcode reader support */
int NoBarCode(int DeviceFD);

int GenericSearch(void);
void Inventory(char *labelfile, int drive, int eject, int start, int stop, int clean);

int TreeFrogBarCode(int DeviceFD);
int EXB_BarCode(int DeviceFD);
int GenericSenseHandler(int fd, u_char flags, u_char SenseKey, u_char AdditionalSenseCode, u_char AdditionalSenseCodeQualifier, RequestSense_T *);

ElementInfo_T *LookupElement(int address);
int eject_tape(char *tapedev, int type);
int unload(int fd, int drive, int slot);
int load(int fd, int drive, int slot);
int GetElementStatus(int DeviceFD);
int drive_loaded(int fd, int drivenum);

/*
 * Log Pages Decode
 */
void WriteErrorCountersPage(LogParameter_T *, size_t);
void ReadErrorCountersPage(LogParameter_T *, size_t);
void C1553APage30(LogParameter_T *, size_t);
void C1553APage37(LogParameter_T *, size_t);
void EXB85058HEPage39(LogParameter_T *, size_t);
void EXB85058HEPage3c(LogParameter_T *, size_t);
int Decode(LogParameter_T *, unsigned *);
int DecodeModeSense(u_char *buffer, size_t offset, char *pstring, char block, FILE *out);

int SCSI_Run(int DeviceFD,
	     Direction_T Direction,
	     CDB_T CDB,
	     size_t CDB_Length,
	     void *DataBuffer,
	     size_t DataBufferLength,
	     RequestSense_T *pRequestSense,
	     size_t RequestSenseLength);

int SCSI_Move(int DeviceFD, u_char chm, int from, int to);
int SCSI_LoadUnload(int DeviceFD, RequestSense_T *pRequestSense, u_char byte1, u_char load);
int SCSI_TestUnitReady(int, RequestSense_T *);
int SCSI_ModeSense(int DeviceFD, u_char *buffer, u_char size, u_char byte1, u_char byte2);
int SCSI_ModeSelect(int DeviceFD,
                    u_char *buffer,
                    u_char length,
                    u_char save,
                    u_char mode,
                    u_char lun);

int SCSI_ReadElementStatus(int DeviceFD,
                           u_char type,
                           u_char lun,
                           u_char VolTag,
                           int StartAddress,
                           size_t NoOfElements,
			   size_t DescriptorSize,
			   u_char **data);

FILE *StatFile;
static int barcode;   /* cache the result from the BarCode function */

SC_COM_T SCSICommand[] = {
  {0x00,
   6,
   "TEST UNIT READY"},
  {0x01,
   6,
   "REWIND"},
  {0x03,
   6,
   "REQUEST SENSE"},
  {0x07,
   6,
   "INITIALIZE ELEMENT STATUS"},
  {0x12,
   6,
   "INQUIRY"},
  {0x13,
   6,
   "ERASE"},
  {0x15,
   6,
   "MODE SELECT"},
  {0x1A,
   6,
   "MODE SENSE"},
  {0x1B,
   6,
   "UNLOAD"},
  {0x4D,
   10,
   "LOG SENSE"},
  {0xA5,
   12,
   "MOVE MEDIUM"},
  { 0xE5,
    12,
   "VENDOR SPECIFIC"},
  {0xB8,
   12,
   "READ ELEMENT STATUS"},
  {0, 0, 0}
};

ChangerCMD_T ChangerIO[] = {
  {"generic_changer",
   "Generic driver changer [generic_changer]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  /* HP Devices */
  {"C1553A",
   "HP Auto Loader [C1553A]",
   GenericMove,
   GenericElementStatus,
   DoNothing1,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  /* Exabyte Devices */
  {"EXB-10e",
   "Exabyte Robot [EXB-10e]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"EXB-120",
   "Exabyte Robot [EXB-120]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   EXB_BarCode,
   GenericSearch,
   GenericSenseHandler},
  {"EXB-210",
   "Exabyte Robot [EXB-210]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   EXB_BarCode,
   GenericSearch,
   GenericSenseHandler},
  {"EXB-85058HE-0000",
   "Exabyte Tape [EXB-85058HE-0000]",
   DoNothing3,
   DoNothing2,
   DoNothing1,
   DoNothing0,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  /* Tandberg Devices */
  {"TDS 1420",
   "Tandberg Robot (TDS 1420)",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
    /* ADIC Devices */
  {"VLS DLT",
   "ADIC VLS DLT Library [VLS DLT]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"VLS SDX",
   "ADIC VLS DLT Library [VLS SDX]",
   SDXMove,
   SDXElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"FastStor DLT",
   "ADIC FastStor DLT Library [FastStor DLT]",
   SDXMove,
   DLT448ElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"Scalar DLT 448",
   "ADIC DLT 448 [Scalar DLT 448]",
   GenericMove,
   DLT448ElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
   /* Sepctra Logic Devices */
  {"215",
   "Spectra Logic TreeFrog[215]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   TreeFrogBarCode,
   GenericSearch,
   GenericSenseHandler},
  /* BreeceHill Q7 */
  {"Quad 7",
   "Breece Hill Quad 7",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  /* Quantum Devices */
  {"L500",
   "ATL [L500]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  /*
   * And now the tape devices
   */
  /* The generic handler if nothing matches */
  {"generic_tape",
   "Generic driver tape [generic_tape]",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   GenericClean,
   GenericRewind,
   NoBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"DLT8000",
   "DLT Tape [DLT8000]",
   DoNothing3,
   DoNothing2,
   DoNothing1,
   DoNothing0,
   DLT4000Eject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"DLT7000",
   "DLT Tape [DLT7000]",
   DoNothing3,
   DoNothing2,
   DoNothing1,
   DoNothing0,
   DLT4000Eject,
   GenericClean,
   GenericRewind,
   GenericBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"DLT4000",
   "DLT Tape [DLT4000]",
   DoNothing3,
   DoNothing2,
   DoNothing1,
   DoNothing0,
   DLT4000Eject,
   GenericClean,
   GenericRewind,
   NoBarCode,
   GenericSearch,
   GenericSenseHandler},
  {"SLR100",
   "Tandberg SLR100",
   GenericMove,
   GenericElementStatus,
   GenericResetStatus,
   GenericFree,
   GenericEject,
   SCSI_LogSenseClean,
   GenericRewind,
   NoBarCode,
   GenericSearch,
   GenericSenseHandler},
   {NULL, NULL, NULL,NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}
};


LogPageDecode_T DecodePages[] = {
  {2,
   "C1553A",
   WriteErrorCountersPage},
  {3,
   "C1553A",
   ReadErrorCountersPage},
  {0x30,
   "C1553A",
   C1553APage30},
  {0x37,
   "C1553A",
   C1553APage37},
  {2,
   "*",
   WriteErrorCountersPage},
  {3,
   "*",
   ReadErrorCountersPage},
  {0x39,
   "EXB-85058HE-0000",
   EXB85058HEPage39},
  {0x3c,
   "EXB-85058HE-0000",
   EXB85058HEPage3c},
  {0, NULL, NULL}
};


int ElementStatusValid = 0;         /* Set if the READ ELEMENT STATUS was OK, an no error is pending */
int LibModeSenseValid = 0;          /* Set if we did an scussefull MODE SENSE */

char *SlotArgs = 0;
/* Pointer to MODE SENSE Pages */
u_char *pModePage = NULL;
EAAPage_T *pEAAPage = NULL;
DeviceCapabilitiesPage_T *pDeviceCapabilitiesPage = NULL;
u_char *pVendorUnique = NULL;

/*
 *  New way, every element type has its on array
 * which is dynamic allocated by the ElementStatus function,
*/
ElementInfo_T *pMTE = NULL; /*Medium Transport Element */
ElementInfo_T *pSTE = NULL; /*Storage Element */
ElementInfo_T *pIEE = NULL; /*Import Export Element */
ElementInfo_T *pDTE = NULL; /*Data Transfer Element */
size_t MTE = 0;                /*Counter for the above element types */
size_t STE = 0;
size_t IEE = 0;
size_t DTE = 0;

char *chgscsi_datestamp = NULL;       /* Result pointer for tape_rdlabel */
char *chgscsi_label = NULL;           /* Result pointer for tape_rdlabel */
char *chgscsi_result = NULL;          /* Needed for the result string of MapBarCode */

/*
 * First all functions which are called from extern
 */