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https://github.com/SDL-Hercules-390/hyperion.git
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550e336141
Delete vstore.c: no longer needed due to previous "OPTION_INLINE_xxxx.." commit. Ongoing effort to move hexterns.h DLL_IMPORT/DLL_EXPORT #defines into new "impexp.h" header: 1. Create impexp.h and move hexterns.h DLL_IMPORT/DLL_EXPORT #defines into it. 2. Insert #include for impexp.h at the beginning of hercules.h. 3. Begin moving misplaced DLL_IMPORT/DLL_EXPORT #defines from source files into impexp.h.
125 lines
6.4 KiB
C
125 lines
6.4 KiB
C
/* FTLIB.H (C) Copyright TurboHercules, SAS 2010-2011 */
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/* Header files for FAKETAPE. */
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/* */
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/* Released under "The Q Public License Version 1" */
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/* (http://www.hercules-390.org/herclic.html) as modifications to */
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/* Hercules. */
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#if !defined( _FTLIB_H_ )
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#define _FTLIB_H_
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#include "hercules.h"
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/*-------------------------------------------------------------------*/
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/* Structure definition for Flex FakeTape block headers */
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/*-------------------------------------------------------------------*/
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/*
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* The character length fields in a Flex FakeTape header are in BIG
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* endian ASCII hex. That is to say, when the length field is ASCII
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* "0123" (i.e. 0x30, 0x31, 0x32, 0x33), the length of the block is
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* decimal 291 bytes (0x0123 == 291).
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*
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* The two block length fields are followed by an XOR "check" field
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* calculated as the XOR of the two preceding length fields and is
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* used to verify the integrity of the header.
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*
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* The Flex FakeTape tape format does not support any flag fields
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* in its header and thus does not support any type of compression.
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*/
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typedef struct _FAKETAPE_BLKHDR
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{ /*
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* PROGRAMMING NOTE: note that for Flex FakeTapes, the "previous
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* chunk size" comes FIRST, followed by the "current chunk size"
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* second. This is the complete opposite from the way it is for
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* AWS tape files. Also note that for Flex FakeTape the size fields
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* are in BIG endian ASCII hex-string whereas for AWS tapes
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* they're LITTLE endian binary.
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*/
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char sprvblkl[4]; /* length of previous block */
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char scurblkl[4]; /* length of this block */
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char sxorblkl[4]; /* XOR both lengths together */
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}
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FAKETAPE_BLKHDR;
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/*
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|| Control block for FakeTape Emulated Tape files
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*/
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typedef struct _fetb
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{
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FILE *fh; /* Tape file handle */
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int fd; /* Tape file descriptor */
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char filename[MAX_PATH]; /* filename */
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off_t nxtblkpos; /* Offset from start of file
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to next block */
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off_t prvblkpos; /* Offset from start of file
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to previous block */
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off_t eotmargin; /* Amount of space left before
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reporting EOT (in bytes) */
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off_t maxsize; /* Maximum allowed TAPE file
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size */
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U16 curfilen; /* Current file number */
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U32 blockid; /* Current device block ID */
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FAKETAPE_BLKHDR chdr; /* Current block header */
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u_int writeprotect:1; /* TRUE=write protected */
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u_int readlast:1; /* TRUE=last i/o was read */
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u_int truncated:1; /* TRUE=file truncated */
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u_int eotwarning:1; /* TRUE=EOT warning area reached */
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u_int created:1; /* TRUE = CREATED */
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} FETB;
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/*
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|| Flags for fet_open()
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*/
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#define FETOPEN_CREATE 0x01 /* Create NL tape, if file missing */
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#define FETOPEN_READONLY 0x02 /* Force the open read-only */
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/*
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|| Error definitions NOTE: Keep these in sync with hetlib.h
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*/
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#define FETE_OK 0 /* No error */
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#define FETE_ERROR -1 /* File error (check errno) */
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#define FETE_TAPEMARK -2 /* Tapemark read */
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#define FETE_BOT -3 /* Beginning of tape */
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#define FETE_EOT -4 /* End of tape */
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#define FETE_BADBOR -5 /* BOR not found */
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#define FETE_BADEOR -6 /* EOR not found */
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#define FETE_BADMARK -7 /* Unexpected tapemark */
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#define FETE_OVERFLOW -8 /* Buffer not big enough */
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#define FETE_PREMEOF -9 /* Premature EOF */
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#define FETE_DECERR -10 // unused
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#define FETE_UNKMETH -11 // unused
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#define FETE_COMPERR -12 // unused
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#define FETE_BADLEN -13 /* Specified length to big */
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#define FETE_PROTECTED -14 /* Write protected */
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#define FETE_BADFUNC -15 /* Bad function code passed */
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#define FETE_BADMETHOD -16 // unused
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#define FETE_BADLEVEL -17 // unused
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#define FETE_BADMSIZE -18 // unused
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#define FETE_BADDIR -19 /* Invalid direction specified */
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#define FETE_NOMEM -20 /* Insufficient memory */
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#define FETE_BADHDR -21 /* Couldn't read block header */
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#define FETE_BADCOMPRESS -22 // unused
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#define FETE_BADBLOCK -23 /* Block is short */
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#define FETE_BADLOC -24 /* Location error */
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// Function Prototypes
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FET_DLL_IMPORT int fet_open( FETB **fetb, char *filename, int flags );
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FET_DLL_IMPORT int fet_close( FETB **fetb );
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FET_DLL_IMPORT int fet_read_header( FETB *fetb, off_t blkpos, U16* pprvblkl, U16* pcurblkl );
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FET_DLL_IMPORT int fet_read( FETB *fetb, void *sbuf );
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FET_DLL_IMPORT int fet_write_header( FETB *fetb, off_t blkpos, U16 prvblkl, U16 curblkl );
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FET_DLL_IMPORT int fet_write( FETB *fetb, void *sbuf, U16 slen );
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FET_DLL_IMPORT int fet_tapemark( FETB *fetb );
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FET_DLL_IMPORT int fet_sync( FETB *fetb );
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FET_DLL_IMPORT int fet_bsb( FETB *fetb );
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FET_DLL_IMPORT int fet_fsb( FETB *fetb );
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FET_DLL_IMPORT int fet_bsf( FETB *fetb );
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FET_DLL_IMPORT int fet_fsf( FETB *fetb );
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FET_DLL_IMPORT int fet_rewind( FETB *fetb );
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FET_DLL_IMPORT int fet_passedeot( FETB *fetb );
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FET_DLL_IMPORT const char *fet_error( int rc );
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#endif /* defined( _FTLIB_H_ ) */
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