44e249282f
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1484 6ac86273-5f31-0410-b378-82cca8765d1b
92 lines
4.1 KiB
C
92 lines
4.1 KiB
C
/****************************************************************/
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/* */
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/* cds.h */
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/* */
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/* Current Directory structures */
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/* */
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/* Copyright (c) 1995 */
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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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#define MAX_CDSPATH 67
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struct cds {
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BYTE cdsCurrentPath[MAX_CDSPATH];
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UWORD cdsFlags; /* see below */
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struct dpb FAR *cdsDpb; /* if != 0, associated DPB */
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union {
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BYTE FAR *_cdsRedirRec; /* IFS record */
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struct {
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UWORD _cdsStrtClst; /* if local path (Flags & CDSPHYSDRV):
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start cluster of CWD; root == 0,
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never access == 0xFFFF */
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UWORD _cdsParam;
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} _cdsRedir;
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} _cdsUnion;
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UWORD cdsStoreUData;
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#define cdsJoinOffset cdsBackslashOffset
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WORD cdsBackslashOffset; /* Position of "root directory" backslash for
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this drive within CurrentPath[]
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prerequisites:
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+ ofs <= strlen(currentPath)
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+ if UNC: ofs > share component
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if local path: ofs > colon
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*/
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BYTE cdsNetFlag1; /* According to PCDOS 7 Tech Ref: IFS drive, 2=IFS, 4=NetUse */
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BYTE FAR *cdsIfs; /* Pointer to Installable File System Header */
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UWORD cdsNetFlags2; /* File System specific data */
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};
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#define cdsStrtClst _cdsUnion._cdsRedir._cdsStrtClst
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#define cdsRedirRec _cdsUnion._cdsRedirRec
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#define cdsParam _cdsUnion._cdsRedir._cdsParam
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/* Bits for cdsFlags (OR combination) */
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#define CDSNETWDRV 0x8000
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#define CDSPHYSDRV 0x4000
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#define CDSJOINED 0x2000 /* not in combination with NETWDRV or SUBST */
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#define CDSSUBST 0x1000 /* not in combination with NETWDRV or JOINED */
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#define CDS_HIDDEN (1 << 7) /* hide drive from redirector's list */
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/* NETWORK PHYSICAL meaning
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0 0 drive not accessable
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0 1 local file system
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1 0 networked file system (UNC naming convention)
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1 1 installable file system (IFS)
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*/
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#define CDSMODEMASK (CDSNETWDRV | CDSPHYSDRV)
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/* #define CDSVALID (CDSNETWDRV | CDSPHYSDRV) */
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#define CDSVALID CDSMODEMASK
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#define IS_DEVICE 0x20
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#define IS_NETWORK 0x40
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#define CDS_MODE_SKIP_PHYSICAL 0x01 /* don't resolve SUBST, JOIN, NETW */
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#define CDS_MODE_CHECK_DEV_PATH 0x02 /* check for existence of device path */
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#define CDS_MODE_ALLOW_WILDCARDS 0x04 /* allow wildcards in "truename" */
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