90 lines
3.9 KiB
C
90 lines
3.9 KiB
C
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/****************************************************************************
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Unit FileSys; Interface
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*****************************************************************************
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FileSys implements the DOS file system calls used by the Presenter and BFile.
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The interface is preserved to be mostly the same as the MAC OS interface.
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All filenames and directories passed as arguments are assumned to be in Ansi,
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and all filenames and directories returned will be in Ansi.
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Module prefix: FS
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****************************************************************************/
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/********************* Exported Data ***************************************/
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#define FSFROMSTART 0 /* From Start of file */
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#define FSFROMMARK 1 /* From current file marker */
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#define FSFROMLEOF 2 /* From End of File */
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/* File System errors */
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#define FSERROR -1 /* failure flage for file I/O */
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#define FUNCERR 1 /* invalid function */
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#define FNFERR 2 /* DOS file not found */
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#define DIRNFERR 3 /* Path not found */
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#define DUPFNERR 4 /* DOS too many files opened */
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#define TMFOERR 4
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#define OPWRERR 5 /* DOS Access denied error */
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#define FNOPNERR 6 /* DOS invalid handle */
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#define MEMFULLERR 8 /* Insufficient memory */
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#define IOERR 13 /* DOS invalid data */
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#define VOLOFFLINERR 15 /* DOS Drive not ready */
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#define WPRERR 19 /* DOS disk write-protected */
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#define POSERR 25 /* Invalid Seek */
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#define PERMERR 32 /* DOS sharing violation */
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#define VLCKDERR 33 /* DOS lock violation */
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#define WRPERMERR 65 /* Network Write Permission Error: access denied */
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#define DIRFULERR 82 /* DOS cannot make directory entry */
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#define ABORTERR 83 /* Fail DOS int24 critical handler */
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#define DSKFULERR -34 /* MAC Disk full error */
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#define EOFERR -39 /* MAC end-of-file error */
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#define FBSYERR -47 /* MAC file busy error */
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#define FLCKDERR -49 /* MAC file is locked error */
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/* Scrap Manager errors */
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#define NOSCRAPERR -100 /* MAC Desk scrap isn't initialized */
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#define NOFORMATERR -101 /* MAC No data of the requested format */
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#define SPOPENERR -102 /* PP Couldn't open the scrap */
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#define SPDATAERR -103 /* PP the scrap had invalid data */
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#define MAXBLERR - 2 /* Block too large error */
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/* File attribute constants */
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#define FS_NORMAL 0x00 /* Normal file - No read/write restrictions */
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#define FS_RDONLY 0x01 /* Read only file */
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#define FS_HIDDEN 0x02 /* Hidden file */
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#define FS_SYSTEM 0x04 /* System file */
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#define FS_VOLID 0x08 /* Volume ID file */
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#define FS_SUBDIR 0x10 /* Subdirectory */
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#define FS_ARCH 0x20 /* Archive file */
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/********************* Exported Operations *********************************/
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OSErr FSRead( Integer fileRef, LongInt far * lbytes, LPtr des);
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/* Read lbytes long from file fileRef to buffer des. 'Lbytes' is updated to
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indicate the number of bytes actually read. Error is returned by function
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if !FALSE. */
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OSErr FSGetFPos( Integer fileRef, LongInt far * markPos );
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/* Get the current mark position in fileRef. Return that position
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in markPos. Function returns error code if !NOERR. */
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OSErr FSSetFPos(Integer fileRef, Word postype, LongInt Offset);
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/* Move the fileRef file pointer to the new position Offset */
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OSErr FSOpen( StringLPtr filename, Word mode, Integer far* fileRef);
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/* Open filename with DOS OPEN 'mode' and return a valid 'fileRef' if NOERR.
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Create an entry in the internal file table and initialize it. The DOS
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handle is left opened (for performance reasons) until
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FSTempClose(fileRef) is called. Return the appropriate error
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if failed. */
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OSErr FSCloseFile(Integer fileRef);
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/* Close the file given its 'fileRef'. Also remove its file table entry. */
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