26f116a217
you reboot while files are open... Reported by Hardi Stengelin :-). Always test *link_fat* result. New function is_free_cluster. Extra checks in *link_fat* (bad r/w offset, i/o, write) and *next_cluster* (dangling chain: bad value in chain) with short messages (no msg for bad chain start). Shorter "Bad DPB" (FAT size) msg. More comments! Update FS INFO on disk only when needed. Check if chain EOF was at expected place when extending. Call *link_fat* before! *setdstart* when a FAT chain grows. [Q: Does 0 byte write always trunc? Why?] git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1358 6ac86273-5f31-0410-b378-82cca8765d1b
409 lines
16 KiB
C
409 lines
16 KiB
C
/****************************************************************/
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/* */
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/* proto.h */
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/* */
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/* Global Function Prototypes */
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/* */
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/* Copyright (c) 1995, 1996 */
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/* Pasquale J. Villani */
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/* All Rights Reserved */
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/* */
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/* This file is part of DOS-C. */
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/* */
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/* DOS-C is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU General Public License */
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/* as published by the Free Software Foundation; either version */
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/* 2, or (at your option) any later version. */
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/* */
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/* DOS-C is distributed in the hope that it will be useful, but */
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/* WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
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/* the 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 */
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/* License along with DOS-C; see the file COPYING. If not, */
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/* write to the Free Software Foundation, 675 Mass Ave, */
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/* Cambridge, MA 02139, USA. */
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/****************************************************************/
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#ifdef MAIN
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#ifdef VERSION_STRINGS
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static BYTE *Proto_hRcsId =
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"$Id$";
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#endif
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#endif
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/* blockio.c */
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struct buffer FAR *getblk(ULONG blkno, COUNT dsk, BOOL overwrite);
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#define getblock(blkno, dsk) getblk(blkno, dsk, FALSE);
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#define getblockOver(blkno, dsk) getblk(blkno, dsk, TRUE);
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VOID setinvld(REG COUNT dsk);
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BOOL flush_buffers(REG COUNT dsk);
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BOOL flush(void);
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BOOL fill(REG struct buffer FAR * bp, ULONG blkno, COUNT dsk);
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BOOL DeleteBlockInBufferCache(ULONG blknolow, ULONG blknohigh, COUNT dsk, int mode);
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/* *** Changed on 9/4/00 BER */
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UWORD dskxfer(COUNT dsk, ULONG blkno, VOID FAR * buf, UWORD numblocks,
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COUNT mode);
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/* *** End of change */
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void AllocateHMASpace (size_t lowbuffer, size_t highbuffer);
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/* break.c */
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unsigned char ctrl_break_pressed(void);
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unsigned char check_handle_break(struct dhdr FAR **pdev);
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void handle_break(struct dhdr FAR **pdev, int sft_out);
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#ifdef __WATCOMC__
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#pragma aux handle_break aborts;
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#endif
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/* chario.c */
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struct dhdr FAR *sft_to_dev(sft FAR *sft);
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long BinaryCharIO(struct dhdr FAR **pdev, size_t n, void FAR * bp,
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unsigned command);
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int ndread(struct dhdr FAR **pdev);
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int StdinBusy(void);
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void con_flush(struct dhdr FAR **pdev);
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unsigned char read_char(int sft_in, int sft_out, BOOL check_break);
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unsigned char read_char_stdin(BOOL check_break);
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long cooked_read(struct dhdr FAR **pdev, size_t n, char FAR *bp);
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void read_line(int sft_in, int sft_out, keyboard FAR * kp);
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size_t read_line_handle(int sft_idx, size_t n, char FAR * bp);
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void write_char(int c, int sft_idx);
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void write_char_stdout(int c);
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void update_scr_pos(unsigned char c, unsigned char count);
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long cooked_write(struct dhdr FAR **pdev, size_t n, char FAR *bp);
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sft FAR *get_sft(UCOUNT);
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/* dosfns.c */
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const char FAR *get_root(const char FAR *);
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BOOL check_break(void);
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UCOUNT GenericReadSft(sft far * sftp, UCOUNT n, void FAR * bp,
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COUNT * err, BOOL force_binary);
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COUNT SftSeek(int sft_idx, LONG new_pos, COUNT mode);
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/*COUNT DosRead(COUNT hndl, UCOUNT n, BYTE FAR * bp, COUNT FAR * err); */
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void BinarySftIO(int sft_idx, void *bp, int mode);
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#define BinaryIO(hndl, bp, mode) BinarySftIO(get_sft_idx(hndl), bp, mode)
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long DosRWSft(int sft_idx, size_t n, void FAR * bp, int mode);
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#define DosRead(hndl, n, bp) DosRWSft(get_sft_idx(hndl), n, bp, XFR_READ)
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#define DosWrite(hndl, n, bp) DosRWSft(get_sft_idx(hndl), n, bp, XFR_WRITE)
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ULONG DosSeek(unsigned hndl, LONG new_pos, COUNT mode);
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long DosOpen(char FAR * fname, unsigned flags, unsigned attrib);
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COUNT CloneHandle(unsigned hndl);
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long DosDup(unsigned Handle);
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COUNT DosForceDup(unsigned OldHandle, unsigned NewHandle);
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long DosOpenSft(char FAR * fname, unsigned flags, unsigned attrib);
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COUNT DosClose(COUNT hndl);
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COUNT DosCloseSft(int sft_idx, BOOL commitonly);
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#define DosCommit(hndl) DosCloseSft(get_sft_idx(hndl), TRUE)
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UWORD DosGetFree(UBYTE drive, UWORD * navc, UWORD * bps, UWORD * nc);
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COUNT DosGetCuDir(UBYTE drive, BYTE FAR * s);
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COUNT DosChangeDir(BYTE FAR * s);
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COUNT DosFindFirst(UCOUNT attr, BYTE FAR * name);
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COUNT DosFindNext(void);
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COUNT DosGetFtime(COUNT hndl, date * dp, time * tp);
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COUNT DosSetFtimeSft(int sft_idx, date dp, time tp);
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#define DosSetFtime(hndl, dp, tp) DosSetFtimeSft(get_sft_idx(hndl), (dp), (tp))
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COUNT DosGetFattr(BYTE FAR * name);
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COUNT DosSetFattr(BYTE FAR * name, UWORD attrp);
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UBYTE DosSelectDrv(UBYTE drv);
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COUNT DosDelete(BYTE FAR * path, int attrib);
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COUNT DosRename(BYTE FAR * path1, BYTE FAR * path2);
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COUNT DosRenameTrue(BYTE * path1, BYTE * path2, int attrib);
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COUNT DosMkRmdir(const char FAR * dir, int action);
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struct dhdr FAR *IsDevice(const char FAR * FileName);
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BOOL IsShareInstalled(void);
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COUNT DosLockUnlock(COUNT hndl, LONG pos, LONG len, COUNT unlock);
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int idx_to_sft_(int SftIndex);
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sft FAR *idx_to_sft(int SftIndex);
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int get_sft_idx(UCOUNT hndl);
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struct cds FAR *get_cds(unsigned dsk);
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COUNT DosTruename(const char FAR * src, char FAR * dest);
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/* dosidle.asm */
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VOID ASMCFUNC DosIdle_int(void);
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VOID ASMCFUNC DosIdle_hlt(void);
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#ifdef __WATCOMC__
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#pragma aux (cdecl) DosIdle_int modify exact []
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#pragma aux (cdecl) DosIdle_hlt modify exact []
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#endif
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/* dosnames.c */
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int ParseDosName(const char *, char *, BOOL);
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/* error.c */
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VOID dump(void);
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VOID panic(BYTE * s);
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VOID fatal(BYTE * err_msg);
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/* fatdir.c */
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VOID dir_init_fnode(f_node_ptr fnp, CLUSTER dirstart);
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f_node_ptr dir_open(const char *dirname);
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COUNT dir_read(REG f_node_ptr fnp);
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BOOL dir_write(REG f_node_ptr fnp);
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VOID dir_close(REG f_node_ptr fnp);
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COUNT dos_findfirst(UCOUNT attr, BYTE * name);
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COUNT dos_findnext(void);
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void ConvertName83ToNameSZ(BYTE FAR * destSZ, BYTE FAR * srcFCBName);
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int FileName83Length(BYTE * filename83);
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/* fatfs.c */
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struct dpb FAR *get_dpb(COUNT dsk);
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ULONG clus2phys(CLUSTER cl_no, struct dpb FAR * dpbp);
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long dos_open(char * path, unsigned flag, unsigned attrib);
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BOOL fcbmatch(const char *fcbname1, const char *fcbname2);
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BOOL fcmp_wild(const char * s1, const char * s2, unsigned n);
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VOID touc(BYTE * s, COUNT n);
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COUNT dos_close(COUNT fd);
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COUNT dos_commit(COUNT fd);
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COUNT dos_delete(BYTE * path, int attrib);
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COUNT dos_rmdir(BYTE * path);
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COUNT dos_rename(BYTE * path1, BYTE * path2, int attrib);
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date dos_getdate(void);
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time dos_gettime(void);
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COUNT dos_getftime(COUNT fd, date FAR * dp, time FAR * tp);
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COUNT dos_setftime(COUNT fd, date dp, time tp);
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ULONG dos_getfsize(COUNT fd);
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BOOL dos_setfsize(COUNT fd, LONG size);
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COUNT dos_mkdir(BYTE * dir);
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BOOL last_link(f_node_ptr fnp);
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COUNT map_cluster(REG f_node_ptr fnp, COUNT mode);
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long rwblock(COUNT fd, VOID FAR * buffer, UCOUNT count, int mode);
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COUNT dos_read(COUNT fd, VOID FAR * buffer, UCOUNT count);
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COUNT dos_write(COUNT fd, const VOID FAR * buffer, UCOUNT count);
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LONG dos_lseek(COUNT fd, LONG foffset, COUNT origin);
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CLUSTER dos_free(struct dpb FAR * dpbp);
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BOOL dir_exists(char * path);
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VOID dpb16to32(struct dpb FAR *dpbp);
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VOID trim_path(BYTE FAR * s);
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int dos_cd(char * PathName);
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f_node_ptr get_f_node(void);
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VOID release_f_node(f_node_ptr fnp);
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#define release_near_f_node(fnp) ((fnp)->f_count = 0)
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COUNT dos_getfattr_fd(COUNT fd);
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COUNT dos_getfattr(BYTE * name);
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COUNT dos_setfattr(BYTE * name, UWORD attrp);
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COUNT media_check(REG struct dpb FAR * dpbp);
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f_node_ptr xlt_fd(COUNT fd);
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COUNT xlt_fnp(f_node_ptr fnp);
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struct dhdr FAR * select_unit(COUNT drive);
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/* fattab.c */
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void read_fsinfo(struct dpb FAR * dpbp);
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void write_fsinfo(struct dpb FAR * dpbp);
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CLUSTER link_fat(struct dpb FAR * dpbp, CLUSTER Cluster1,
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REG CLUSTER Cluster2);
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CLUSTER next_cluster(struct dpb FAR * dpbp, REG CLUSTER ClusterNum);
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BOOL is_free_cluster(struct dpb FAR * dpbp, REG CLUSTER ClusterNum);
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/* fcbfns.c */
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VOID DosOutputString(BYTE FAR * s);
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int DosCharInputEcho(VOID);
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int DosCharInput(VOID);
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VOID DosDirectConsoleIO(iregs FAR * r);
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VOID DosCharOutput(COUNT c);
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VOID DosDisplayOutput(COUNT c);
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BYTE FAR *FatGetDrvData(UBYTE drive, UBYTE * spc, UWORD * bps,
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UWORD * nc);
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UWORD FcbParseFname(UBYTE *wTestMode, const BYTE FAR *lpFileName, fcb FAR * lpFcb);
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const BYTE FAR *ParseSkipWh(const BYTE FAR * lpFileName);
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BOOL TestCmnSeps(BYTE FAR * lpFileName);
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BOOL TestFieldSeps(BYTE FAR * lpFileName);
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const BYTE FAR *GetNameField(const BYTE FAR * lpFileName, BYTE FAR * lpDestField,
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COUNT nFieldSize, BOOL * pbWildCard);
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UBYTE FcbReadWrite(xfcb FAR *, UCOUNT, int);
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UBYTE FcbGetFileSize(xfcb FAR * lpXfcb);
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void FcbSetRandom(xfcb FAR * lpXfcb);
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UBYTE FcbRandomBlockIO(xfcb FAR * lpXfcb, UWORD *nRecords, int mode);
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UBYTE FcbRandomIO(xfcb FAR * lpXfcb, int mode);
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UBYTE FcbOpen(xfcb FAR * lpXfcb, unsigned flags);
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UBYTE FcbDelete(xfcb FAR * lpXfcb);
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UBYTE FcbRename(xfcb FAR * lpXfcb);
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UBYTE FcbClose(xfcb FAR * lpXfcb);
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void FcbCloseAll(void);
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UBYTE FcbFindFirstNext(xfcb FAR * lpXfcb, BOOL First);
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/* intr.asm */
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COUNT ASMPASCAL res_DosExec(COUNT mode, exec_blk * ep, BYTE * lp);
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UCOUNT ASMPASCAL res_read(int fd, void *buf, UCOUNT count);
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#ifdef __WATCOMC__
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#pragma aux (pascal) res_DosExec modify exact [ax bx dx es]
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#pragma aux (pascal) res_read modify exact [ax bx cx dx]
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#endif
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/* ioctl.c */
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COUNT DosDevIOctl(lregs * r);
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/* memmgr.c */
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seg far2para(VOID FAR * p);
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seg long2para(ULONG size);
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void FAR *add_far(void FAR * fp, unsigned off);
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VOID FAR *adjust_far(const void FAR * fp);
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COUNT DosMemAlloc(UWORD size, COUNT mode, seg * para, UWORD * asize);
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COUNT DosMemLargest(UWORD * size);
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COUNT DosMemFree(UWORD para);
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COUNT DosMemChange(UWORD para, UWORD size, UWORD * maxSize);
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COUNT DosMemCheck(void);
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COUNT FreeProcessMem(UWORD ps);
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COUNT DosGetLargestBlock(UWORD * block);
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VOID show_chain(void);
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void DosUmbLink(unsigned n);
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VOID mcb_print(mcb FAR * mcbp);
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/* lfnapi.c */
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COUNT lfn_allocate_inode(VOID);
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COUNT lfn_free_inode(COUNT handle);
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COUNT lfn_setup_inode(COUNT handle, ULONG dirstart, UWORD diroff);
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COUNT lfn_create_entries(COUNT handle, lfn_inode_ptr lip);
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COUNT lfn_remove_entries(COUNT handle);
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COUNT lfn_dir_read(COUNT handle, lfn_inode_ptr lip);
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COUNT lfn_dir_write(COUNT handle);
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/* nls.c */
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BYTE DosYesNo(unsigned char ch);
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#ifndef DosUpMem
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VOID DosUpMem(VOID FAR * str, unsigned len);
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#endif
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unsigned char ASMCFUNC DosUpChar(unsigned char ch);
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VOID DosUpString(char FAR * str);
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VOID DosUpFMem(VOID FAR * str, unsigned len);
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unsigned char DosUpFChar(unsigned char ch);
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VOID DosUpFString(char FAR * str);
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COUNT DosGetData(int subfct, UWORD cp, UWORD cntry, UWORD bufsize,
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VOID FAR * buf);
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#ifndef DosGetCountryInformation
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COUNT DosGetCountryInformation(UWORD cntry, VOID FAR * buf);
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#endif
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#ifndef DosSetCountry
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COUNT DosSetCountry(UWORD cntry);
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#endif
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COUNT DosGetCodepage(UWORD * actCP, UWORD * sysCP);
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COUNT DosSetCodepage(UWORD actCP, UWORD sysCP);
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UWORD ASMCFUNC syscall_MUX14(DIRECT_IREGS);
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/* prf.c */
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#ifdef DEBUG
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int VA_CDECL printf(const char * fmt, ...);
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int VA_CDECL sprintf(char * buff, const char * fmt, ...);
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#endif
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VOID hexd(char *title, VOID FAR * p, COUNT numBytes);
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void put_unsigned(unsigned n, int base, int width);
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void put_string(const char *s);
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void put_console(int);
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/* strings.c */
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size_t /* ASMCFUNC */ ASMPASCAL strlen(const char * s);
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size_t /* ASMCFUNC */ ASMPASCAL fstrlen(const char FAR * s);
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char FAR * /*ASMCFUNC*/ ASMPASCAL _fstrcpy(char FAR * d, const char FAR * s);
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int /*ASMCFUNC*/ ASMPASCAL strcmp(const char * d, const char * s);
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int /*ASMCFUNC*/ ASMPASCAL fstrcmp(const char FAR * d, const char FAR * s);
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int /*ASMCFUNC*/ ASMPASCAL fstrncmp(const char FAR * d, const char FAR * s, size_t l);
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int /*ASMCFUNC*/ ASMPASCAL strncmp(const char * d, const char * s, size_t l);
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char * /*ASMCFUNC*/ ASMPASCAL strchr(const char * s, int c);
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char FAR * /*ASMCFUNC*/ ASMPASCAL fstrchr(const char FAR * s, int c);
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void FAR * /*ASMCFUNC*/ ASMPASCAL fmemchr(const void FAR * s, int c, size_t n);
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/* misc.c */
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char * /*ASMCFUNC*/ ASMPASCAL strcpy(char * d, const char * s);
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void /*ASMCFUNC*/ ASMPASCAL fmemcpyBack(void FAR * d, const void FAR * s, size_t n);
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void /*ASMCFUNC*/ ASMPASCAL fmemcpy(void FAR * d, const void FAR * s, size_t n);
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void /*ASMCFUNC*/ ASMPASCAL fstrcpy(char FAR * d, const char FAR * s);
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void * /*ASMCFUNC*/ ASMPASCAL memcpy(void *d, const void * s, size_t n);
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void * /*ASMCFUNC*/ ASMPASCAL fmemset(void FAR * s, int ch, size_t n);
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void * /*ASMCFUNC*/ ASMPASCAL memset(void * s, int ch, size_t n);
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int /*ASMCFUNC*/ ASMPASCAL memcmp(const void *m1, const void *m2, size_t n);
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int /*ASMCFUNC*/ ASMPASCAL fmemcmp(const void FAR *m1, const void FAR *m2, size_t n);
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#ifdef __WATCOMC__
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/* bx, cx, dx and es not used or clobbered for all asmsupt.asm functions except
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(f)memchr/(f)strchr (which clobber dx) */
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#pragma aux (pascal) pascal_ax modify exact [ax]
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#pragma aux (pascal_ax) fmemcpy
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#pragma aux (pascal_ax) memcpy
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#pragma aux (pascal_ax) fmemset
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#pragma aux (pascal_ax) memset
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#pragma aux (pascal_ax) fmemcmp modify nomemory
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#pragma aux (pascal_ax) memcmp modify nomemory
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#pragma aux (pascal_ax) fstrcpy
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#pragma aux (pascal_ax) strcpy
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#pragma aux (pascal_ax) fstrlen modify nomemory
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#pragma aux (pascal_ax) strlen modify nomemory
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#pragma aux (pascal) memchr modify exact [ax dx] nomemory
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#pragma aux (pascal) fmemchr modify exact [ax dx] nomemory
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#pragma aux (pascal) strchr modify exact [ax dx] nomemory
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#pragma aux (pascal) fstrchr modify exact [ax dx] nomemory
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#endif
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/* sysclk.c */
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COUNT BcdToByte(COUNT x);
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COUNT BcdToWord(BYTE * x, UWORD * mon, UWORD * day, UWORD * yr);
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LONG WordToBcd(BYTE * x, UWORD * mon, UWORD * day, UWORD * yr);
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/* syspack.c */
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#ifdef NONNATIVE
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VOID getdirent(UBYTE FAR * vp, struct dirent FAR * dp);
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VOID putdirent(struct dirent FAR * dp, UBYTE FAR * vp);
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#else
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#define getdirent(vp, dp) fmemcpy(dp, vp, sizeof(struct dirent))
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#define putdirent(dp, vp) fmemcpy(vp, dp, sizeof(struct dirent))
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#endif
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/* systime.c */
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void DosGetTime(struct dostime *dt);
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int DosSetTime(const struct dostime *dt);
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unsigned char DosGetDate(struct dosdate *dd);
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int DosSetDate(const struct dosdate *dd);
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const UWORD *is_leap_year_monthdays(UWORD year);
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UWORD DaysFromYearMonthDay(UWORD Year, UWORD Month, UWORD DayOfMonth);
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/* task.c */
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VOID new_psp(seg para, seg cur_psp);
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VOID child_psp(seg para, seg cur_psp, int psize);
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VOID return_user(void);
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COUNT DosExec(COUNT mode, exec_blk FAR * ep, BYTE FAR * lp);
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ULONG SftGetFsize(int sft_idx);
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VOID InitPSP(VOID);
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/* newstuff.c */
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int SetJFTSize(UWORD nHandles);
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long DosMkTmp(BYTE FAR * pathname, UWORD attr);
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COUNT truename(const char FAR * src, char * dest, COUNT t);
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/* network.c */
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int network_redirector(unsigned cmd);
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int network_redirector_fp(unsigned cmd, void far *s);
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long ASMPASCAL network_redirector_mx(unsigned cmd, void far *s, void *arg);
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#define remote_rw(cmd,s,arg) network_redirector_mx(cmd, s, (void *)arg)
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#define remote_getfree(s,d) (int)network_redirector_mx(REM_GETSPACE, s, d)
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#define remote_lseek(s,new_pos) network_redirector_mx(REM_LSEEK, s, &new_pos)
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#define remote_setfattr(attr) (int)network_redirector_mx(REM_SETATTR, NULL, (void *)attr)
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#define remote_printredir(dx,ax) (int)network_redirector_mx(REM_PRINTREDIR, MK_FP(0,dx),(void *)ax)
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#define QRemote_Fn(d,s) (int)network_redirector_mx(REM_FILENAME, d, (void *)&s)
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UWORD get_machine_name(BYTE FAR * netname);
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VOID set_machine_name(BYTE FAR * netname, UWORD name_num);
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/* procsupt.asm */
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VOID ASMCFUNC exec_user(iregs FAR * irp, int disable_a20);
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/* new by TE */
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/*
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assert at compile time, that something is true.
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use like
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ASSERT_CONST( SECSIZE == 512)
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ASSERT_CONST( (BYTE FAR *)x->fcb_ext - (BYTE FAR *)x->fcbname == 8)
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*/
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#define ASSERT_CONST(x) { typedef struct { char _xx[x ? 1 : -1]; } xx ; }
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