Imported Upstream version 0.72
This commit is contained in:
TANIGUCHI Takaki
286
scsi-layer.h
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286
scsi-layer.h
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/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2009 Carsten Gnoerlich.
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* Project home page: http://www.dvdisaster.com
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* Email: carsten@dvdisaster.com -or- cgnoerlich@fsfe.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA,
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* or direct your browser at http://www.gnu.org.
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*/
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#ifndef SCSI_LAYER_H
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#define SCSI_LAYER_H
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#ifdef SYS_LINUX
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#include <sys/ioctl.h>
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#include <linux/cdrom.h>
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#endif
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#ifdef SYS_MINGW
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#include <windows.h>
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#include <winioctl.h>
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#endif
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#ifdef SYS_FREEBSD
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#include <camlib.h>
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#endif
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#ifdef SYS_DARWIN
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#define REAL_VERSION VERSION
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#undef VERSION
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#include <CoreFoundation/CoreFoundation.h>
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#include <IOKit/IOKitLib.h>
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#include <IOKit/scsi-commands/SCSITaskLib.h>
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#include <IOKit/storage/IODVDTypes.h>
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#include <mach/mach.h>
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#include <string.h>
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#include <stdlib.h>
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#define VERSION REAL_VERSION
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#endif
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/***
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*** Define the Sense data structure.
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***/
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/*
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* Linux already has one
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*/
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#ifdef SYS_LINUX
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#define MAX_CDB_SIZE CDROM_PACKET_SIZE
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/* Now globally defined for all OSes here */
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//typedef struct request_sense Sense;
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#endif
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#ifdef SYS_FREEBSD
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#define MAX_CDB_SIZE SCSI_MAX_CDBLEN
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#endif
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#if defined(SYS_UNKNOWN) || defined(SYS_MINGW) || defined(SYS_NETBSD) || defined(SYS_SOLARIS) || defined(SYS_DARWIN)
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#define MAX_CDB_SIZE 16 /* longest possible SCSI command */
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#endif
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/*
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* The sense struct is named differently on various OSes,
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* Some have subtle differences in the used data types.
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* To avoid typecasting mayhem we simply reproduce the Linux
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* version here and use it on all OS versions.
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*/
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typedef struct _Sense {
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guint8 error_code : 7;
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guint8 valid : 1;
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guint8 segment_number;
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guint8 sense_key : 4;
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guint8 reserved2 : 1;
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guint8 ili : 1;
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guint8 reserved1 : 2;
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guint8 information[4];
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guint8 add_sense_len;
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guint8 command_info[4];
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guint8 asc;
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guint8 ascq;
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guint8 fruc;
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guint8 sks[3];
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guint8 asb[46];
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} Sense;
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/***
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*** The DeviceHandle is pretty much our device abstraction layer.
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***
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* It contains info about the opened device and the inserted medium.
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*/
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typedef struct _DeviceHandle
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{ /*
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* OS-specific data for device access
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*/
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#if defined(SYS_LINUX) || defined(SYS_NETBSD) || defined(SYS_SOLARIS)
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int fd; /* device file descriptor */
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#endif
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#ifdef SYS_FREEBSD
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struct cam_device *camdev; /* camlib device handle */
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union ccb *ccb;
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#endif
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#ifdef SYS_MINGW
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HANDLE fd; /* Windows file handle for the device (SPTI case) */
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int aspiUsed; /* TRUE is device is accessed via ASPI */
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int ha,target,lun; /* ASPI way of describing drives */
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#endif
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#ifdef SYS_DARWIN
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IOCFPlugInInterface **plugInInterface;
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MMCDeviceInterface **mmcDeviceInterface;
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SCSITaskDeviceInterface **scsiTaskDeviceInterface;
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SCSITaskInterface **taskInterface;
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IOVirtualRange *range;
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#endif
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/*
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* OS-independent data about the device
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*/
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char *device; /* /dev/foo or whatever the OS uses to name it */
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char devinfo[34]; /* whole device info string from INQUIRY */
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char vendor[34]; /* vendor and product info only */
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Sense sense; /* sense data from last operation */
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double singleRate; /* supposed KB/sec @ single speed */
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int maxRate; /* guessed maximum transfer rate */
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int clusterSize; /* number of sectors per cluster */
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/*
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* Raw reading support
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*/
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int canReadDefective; /* TRUE if drive claims to raw read uncorrectable sectors */
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int canC2Scan; /* TRUE if drive supports C2 error scanning */
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int c2[MAX_CLUSTER_SIZE]; /* C2 errors per sector */
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unsigned char previousReadMode;/* read mode prior to switching to raw reads */
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unsigned char previousRetries; /* retries prior to switching */
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unsigned char currentReadMode; /* current raw read mode */
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RawBuffer *rawBuffer; /* for performing raw read analysis */
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int (*read)(struct _DeviceHandle*, unsigned char*, int, int);
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int (*readRaw)(struct _DeviceHandle*, unsigned char*, int, int);
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/*
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* Information about currently inserted medium
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*/
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gint64 sectors; /* actually used number of sectors */
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int sessions; /* number of sessions */
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int layers; /* and layers */
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char manuID[20]; /* Manufacturer info from ADIP/lead-in */
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int mainType; /* CD or DVD */
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int subType; /* see enum below */
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char *typeDescr; /* human readable form of subType */
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int bookType; /* book type */
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char *bookDescr; /* human readable of above */
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int profile; /* profile selected by drive */
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char *profileDescr; /* human readable form of above */
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char *shortProfile; /* short version of above */
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int isDash; /* DVD- */
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int isPlus; /* DVD+ */
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int incomplete; /* disc is not finalized or otherwise broken */
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int discStatus; /* obtained from READ DISC INFORMATION query */
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int rewriteable;
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char *mediumDescr; /* textual description of medium */
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guint8 mediumFP[16]; /* Medium fingerprint */
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gint64 fpSector; /* Sector used for calculating the fingerprint */
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int fpState; /* 0=unknown; 1=unreadable; 2=present */
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/*
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* size alternatives from different sources
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*/
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gint64 readCapacity; /* value returned by READ CAPACITY */
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gint64 userAreaSize; /* size of user area according to DVD Info struct */
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gint64 blankCapacity; /* blank capacity (maybe 0 if query failed) */
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gint64 rs02Size; /* size reported in RS02 header */
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/*
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* file system(s) found on medium
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*/
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EccHeader *rs02Header; /* copy of RS02 header */
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struct _IsoInfo *isoInfo; /* Information gathered from ISO filesystem */
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/*
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* debugging stuff
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*/
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Bitmap *defects; /* for defect simulation */
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} DeviceHandle;
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/*
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* Media types seem not to be standardized anywhere,
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* so we make up our own here.
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*/
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#define MAIN_TYPE_MASK 0xf0
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#define CD 0x10
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#define DATA1 0x11
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#define XA21 0x12
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#define DVD 0x20
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#define DVD_RAM 0x21
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#define DVD_DASH_R 0x22
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#define DVD_DASH_RW 0x23
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#define DVD_PLUS_R 0x24
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#define DVD_PLUS_RW 0x25
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#define DVD_DASH_R_DL 0x26
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#define DVD_DASH_RW_DL 0x27
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#define DVD_PLUS_R_DL 0x28
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#define DVD_PLUS_RW_DL 0x29
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#define BD 0x40
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#define BD_R 0x41
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#define BD_RE 0x42
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#define UNSUPPORTED 0x00
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/* transport io modes */
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#define DATA_WRITE 0
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#define DATA_READ 1
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#define DATA_NONE 2
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/***
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*** Exported functions
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***/
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/*
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* OS-dependent wrappers from scsi-<os>.c
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*/
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DeviceHandle* OpenDevice(char*);
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#ifdef SYS_MINGW
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DeviceHandle* open_aspi_device(char*, int);
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DeviceHandle* open_spti_device(char*);
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#endif
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int SendPacket(DeviceHandle*, unsigned char*, int, unsigned char*, int, Sense*, int);
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/***
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*** scsi-layer.c
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***
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* The really user-visible stuff
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*/
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enum
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{ MODE_PAGE_UNSET,
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MODE_PAGE_SET
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};
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DeviceHandle* OpenAndQueryDevice(char*);
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DeviceHandle* QueryMediumInfo(char*);
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gint64 CurrentMediumSize(int);
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int GetMediumFingerprint(DeviceHandle*, guint8*, gint64);
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void CloseDevice(DeviceHandle*);
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int InquireDevice(DeviceHandle*, int);
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void SetRawMode(DeviceHandle*, int);
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void SpinupDevice(DeviceHandle*);
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void LoadMedium(struct _DeviceHandle*, int);
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int TestUnitReady(DeviceHandle*);
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int ReadSectors(DeviceHandle*, unsigned char*, gint64, int);
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int ReadSectorsFast(DeviceHandle*, unsigned char*, gint64, int);
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#endif /* SCSI_LAYER_H */
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