From dee563095deb2bbdba5d4e04e48c99694061e302 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Fri, 26 Mar 2004 21:43:49 +0000 Subject: * errno.cc (errmap): Map ERROR_SHARING_VIOLATION to EBUSY, 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. --- winsup/cygwin/mtinfo.h | 133 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 winsup/cygwin/mtinfo.h (limited to 'winsup/cygwin/mtinfo.h') diff --git a/winsup/cygwin/mtinfo.h b/winsup/cygwin/mtinfo.h new file mode 100644 index 000000000..31260d17f --- /dev/null +++ b/winsup/cygwin/mtinfo.h @@ -0,0 +1,133 @@ +/* mtinfo.h: Defininitions for the Cygwin tape driver class. + + Copyright 2004 Red Hat, Inc. + +This file is part of Cygwin. + +This software is a copyrighted work licensed under the terms of the +Cygwin license. Please consult the file "CYGWIN_LICENSE" for +details. */ + +#define MTINFO_MAGIC 0x179b2af0 +#define MTINFO_VERSION 1 + +/* Maximum number of supported partitions per drive. */ +#define MAX_PARTITION_NUM 64 +/* Maximum number of supported drives. */ +#define MAX_DRIVE_NUM 8 + +/* Values for bookkeeping of the tape position relative to filemarks + and eod/eom. */ +enum eom_val +{ + no_eof, + eof_hit, + eof, + eod_hit, + eod, + eom_hit, + eom +}; + +enum dirty_state +{ + clean, + has_read, + has_written +}; + +enum lock_state +{ + unlocked, + lock_error, + auto_locked, + locked +}; + +/* Partition specific information */ +class mtinfo_part +{ +public: + long block; /* logical block no */ + long file; /* current file no */ + long fblock; /* relative block no */ + bool smark; /* At setmark? */ + eom_val emark; /* "end-of"-mark */ + + void initialize (long nblock = -1); +}; + +class mtinfo_drive +{ + int drive; + int lasterr; + long partition; + long block; + dirty_state dirty; + lock_state lock; + TAPE_GET_DRIVE_PARAMETERS _dp; + TAPE_GET_MEDIA_PARAMETERS _mp; + bool buffer_writes; + bool two_fm; + bool fast_eom; + bool auto_lock; + bool sysv; + bool nowait; + mtinfo_part _part[MAX_PARTITION_NUM]; + + inline int error (const char *str) + { + if (lasterr) + debug_printf ("%s: Win32 error %d", lasterr); + return lasterr; + } + inline bool get_feature (DWORD parm) + { + return ((parm & TAPE_DRIVE_HIGH_FEATURES) + ? ((_dp.FeaturesHigh & parm) != 0) + : ((_dp.FeaturesLow & parm) != 0)); + } + int get_pos (HANDLE mt, long *ppartition = NULL, long *pblock = NULL); + int _set_pos (HANDLE mt, int mode, long count, int partition); + int create_partitions (HANDLE mt, long count); + int set_partition (HANDLE mt, long count); + int write_marks (HANDLE mt, int marktype, DWORD count); + int erase (HANDLE mt, int mode); + int prepare (HANDLE mt, int action, bool is_auto = false); + int set_compression (HANDLE mt, long count); + int set_blocksize (HANDLE mt, long count); + int status (HANDLE mt, struct mtget *get); + int set_options (HANDLE mt, long options); + +public: + void initialize (int num, bool first_time); + int get_dp (HANDLE mt); + int get_mp (HANDLE mt); + int open (HANDLE mt); + int close (HANDLE mt, bool rewind); + int read (HANDLE mt, void *ptr, size_t &ulen); + int write (HANDLE mt, const void *ptr, size_t &len); + int ioctl (HANDLE mt, unsigned int cmd, void *buf); + int set_pos (HANDLE mt, int mode, long count, bool sfm_func); + + inline bool buffered_writes (void) { return buffer_writes; } + PTAPE_GET_DRIVE_PARAMETERS dp (void) { return &_dp; } + PTAPE_GET_MEDIA_PARAMETERS mp (void) { return &_mp; } + mtinfo_part *part (int num) { return &_part[num]; } +}; + +class mtinfo +{ + DWORD magic; + DWORD version; + mtinfo_drive _drive[MAX_DRIVE_NUM]; + +public: + void initialize (void); + mtinfo_drive *drive (int num) { return &_drive[num]; } +}; + +extern HANDLE mt_h; +extern mtinfo *mt; + +extern void __stdcall mtinfo_init (); -- cgit v1.2.3