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dee563095d
ERROR_EOM_OVERFLOW and ERROR_NO_DATA_DETECTED to EIO. Add mappings for ERROR_NO_MEDIA_IN_DRIVE, ERROR_DEVICE_REQUIRES_CLEANING and ERROR_DEVICE_DOOR_OPEN. * fhandler.h (class fhandler_dev_raw): Drop varblkop member. (fhandler_dev_raw::is_eom): De-virtualize. (fhandler_dev_raw::is_eof): Ditto. (class fhandler_dev_tape): Drop lasterr and dp member. Add mt_mtx member. Drop all private methods formerly used by ioctl. (fhandler_dev_tape::is_rewind_device): Use get_minor for clarity. (fhandler_dev_tape::driveno): New method. (fhandler_dev_tape::drive_init): New method. (fhandler_dev_tape::clear): Remove method. (fhandler_dev_tape::is_eom): Ditto. (fhandler_dev_tape::is_eof): Ditto. (fhandler_dev_tape::write_file): Ditto. (fhandler_dev_tape::read_file): Ditto. (fhandler_dev_tape::_lock): New method. (fhandler_dev_tape::unlock): New method. (fhandler_dev_tape::raw_read): New method. (fhandler_dev_tape::raw_write): New method. * fhandler_raw.cc (fhandler_dev_raw::is_eom): New method. (fhandler_dev_raw::is_eof): New method. (fhandler_dev_raw::open): Allow setting write through option by using the O_TEXT flag as ... flag. (fhandler_dev_raw::writebuf): Remove usage of varblkop and other tape specific code. (fhandler_dev_raw::raw_read): Ditto. (fhandler_dev_raw::dup): Ditto. * fhandler_tape.cc: Rewrite tape operations entirely. Implement new tape driver classes mtinfo, mtinfo_drive and mtinfo_part. Reduce fhandler_dev_tape methods to mostly just calling appropriate mtinfo_drive methods. (mtinfo_init): New function adding the mtinfo shared memory area. * mtinfo.h: New file, containing the definition of the new tape driver classes. * shared.cc: Include mtinfo.h. (offsets): Add entry for mtinfo shared memory area. (memory_init): Call mtinfo_init. * shared_info.h (shared_locations): Add SH_MTINFO shared location. * include/cygwin/mtio.h: Change and add various comments. Add GMT_xxx macros for new generic flags. Add MT_ST_xxx bitfield definitions for MTSETDRVBUFFER ioctl. * include/cygwin/version.h: Bump API minor version number.
134 lines
3.1 KiB
C++
134 lines
3.1 KiB
C++
/* mtinfo.h: Defininitions for the Cygwin tape driver class.
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Copyright 2004 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#define MTINFO_MAGIC 0x179b2af0
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#define MTINFO_VERSION 1
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/* Maximum number of supported partitions per drive. */
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#define MAX_PARTITION_NUM 64
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/* Maximum number of supported drives. */
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#define MAX_DRIVE_NUM 8
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/* Values for bookkeeping of the tape position relative to filemarks
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and eod/eom. */
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enum eom_val
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{
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no_eof,
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eof_hit,
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eof,
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eod_hit,
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eod,
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eom_hit,
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eom
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};
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enum dirty_state
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{
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clean,
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has_read,
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has_written
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};
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enum lock_state
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{
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unlocked,
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lock_error,
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auto_locked,
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locked
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};
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/* Partition specific information */
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class mtinfo_part
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{
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public:
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long block; /* logical block no */
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long file; /* current file no */
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long fblock; /* relative block no */
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bool smark; /* At setmark? */
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eom_val emark; /* "end-of"-mark */
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void initialize (long nblock = -1);
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};
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class mtinfo_drive
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{
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int drive;
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int lasterr;
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long partition;
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long block;
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dirty_state dirty;
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lock_state lock;
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TAPE_GET_DRIVE_PARAMETERS _dp;
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TAPE_GET_MEDIA_PARAMETERS _mp;
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bool buffer_writes;
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bool two_fm;
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bool fast_eom;
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bool auto_lock;
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bool sysv;
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bool nowait;
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mtinfo_part _part[MAX_PARTITION_NUM];
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inline int error (const char *str)
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{
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if (lasterr)
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debug_printf ("%s: Win32 error %d", lasterr);
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return lasterr;
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}
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inline bool get_feature (DWORD parm)
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{
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return ((parm & TAPE_DRIVE_HIGH_FEATURES)
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? ((_dp.FeaturesHigh & parm) != 0)
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: ((_dp.FeaturesLow & parm) != 0));
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}
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int get_pos (HANDLE mt, long *ppartition = NULL, long *pblock = NULL);
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int _set_pos (HANDLE mt, int mode, long count, int partition);
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int create_partitions (HANDLE mt, long count);
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int set_partition (HANDLE mt, long count);
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int write_marks (HANDLE mt, int marktype, DWORD count);
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int erase (HANDLE mt, int mode);
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int prepare (HANDLE mt, int action, bool is_auto = false);
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int set_compression (HANDLE mt, long count);
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int set_blocksize (HANDLE mt, long count);
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int status (HANDLE mt, struct mtget *get);
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int set_options (HANDLE mt, long options);
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public:
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void initialize (int num, bool first_time);
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int get_dp (HANDLE mt);
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int get_mp (HANDLE mt);
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int open (HANDLE mt);
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int close (HANDLE mt, bool rewind);
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int read (HANDLE mt, void *ptr, size_t &ulen);
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int write (HANDLE mt, const void *ptr, size_t &len);
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int ioctl (HANDLE mt, unsigned int cmd, void *buf);
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int set_pos (HANDLE mt, int mode, long count, bool sfm_func);
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inline bool buffered_writes (void) { return buffer_writes; }
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PTAPE_GET_DRIVE_PARAMETERS dp (void) { return &_dp; }
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PTAPE_GET_MEDIA_PARAMETERS mp (void) { return &_mp; }
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mtinfo_part *part (int num) { return &_part[num]; }
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};
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class mtinfo
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{
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DWORD magic;
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DWORD version;
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mtinfo_drive _drive[MAX_DRIVE_NUM];
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public:
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void initialize (void);
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mtinfo_drive *drive (int num) { return &_drive[num]; }
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};
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extern HANDLE mt_h;
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extern mtinfo *mt;
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extern void __stdcall mtinfo_init ();
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