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FreeDOS/kernel/fcbfns.c
Jim Tabor 0fddf1f848 Add new files and update cvs with patches and changes 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@61 6ac86273-5f31-0410-b378-82cca8765d1b
2000-08-06 05:50:17 +00:00

1208 lines
31 KiB
C
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/****************************************************************/
/* */
/* fcbfns.c */
/* */
/* Old CP/M Style Function Handlers for Kernel */
/* */
/* Copyright (c) 1995 */
/* Pasquale J. Villani */
/* All Rights Reserved */
/* */
/* This file is part of DOS-C. */
/* */
/* DOS-C is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version */
/* 2, or (at your option) any later version. */
/* */
/* DOS-C is distributed in the hope that it will be useful, but */
/* WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
/* the GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public */
/* License along with DOS-C; see the file COPYING. If not, */
/* write to the Free Software Foundation, 675 Mass Ave, */
/* Cambridge, MA 02139, USA. */
/****************************************************************/
#include "portab.h"
#include "globals.h"
#ifdef VERSION_STRINGS
static BYTE *RcsId = "$Id$";
#endif
/*
* $Log$
* Revision 1.6 2000/08/06 05:50:17 jimtabor
* Add new files and update cvs with patches and changes
*
* Revision 1.5 2000/06/21 18:16:46 jimtabor
* Add UMB code, patch, and code fixes
*
* Revision 1.4 2000/05/26 19:25:19 jimtabor
* Read History file for Change info
*
* Revision 1.3 2000/05/25 20:56:21 jimtabor
* Fixed project history
*
* Revision 1.2 2000/05/08 04:30:00 jimtabor
* Update CVS to 2020
*
* Revision 1.1.1.1 2000/05/06 19:34:53 jhall1
* The FreeDOS Kernel. A DOS kernel that aims to be 100% compatible with
* MS-DOS. Distributed under the GNU GPL.
*
* Revision 1.7 2000/03/31 05:40:09 jtabor
* Added Eric W. Biederman Patches
*
* Revision 1.6 2000/03/17 22:59:04 kernel
* Steffen Kaiser's NLS changes
*
* Revision 1.5 2000/03/09 06:07:11 kernel
* 2017f updates by James Tabor
*
* Revision 1.4 1999/09/23 04:40:46 jprice
* *** empty log message ***
*
* Revision 1.2 1999/04/04 18:51:43 jprice
* no message
*
* Revision 1.1.1.1 1999/03/29 15:42:15 jprice
* New version without IPL.SYS
*
* Revision 1.5 1999/02/09 02:54:23 jprice
* Added Pat's 1937 kernel patches
*
* Revision 1.4 1999/02/04 03:18:37 jprice
* Formating. Added comments.
*
* Revision 1.3 1999/02/01 01:43:28 jprice
* Fixed findfirst function to find volume label with Windows long filenames
*
* Revision 1.2 1999/01/22 04:15:28 jprice
* Formating
*
* Revision 1.1.1.1 1999/01/20 05:51:00 jprice
* Imported sources
*
*
* Rev 1.7 06 Dec 1998 8:44:10 patv
* Expanded fcb functions for new I/O subsystem.
*
* Rev 1.6 04 Jan 1998 23:14:38 patv
* Changed Log for strip utility
*
* Rev 1.5 03 Jan 1998 8:36:02 patv
* Converted data area to SDA format
*
* Rev 1.4 16 Jan 1997 12:46:38 patv
* pre-Release 0.92 feature additions
*
* Rev 1.3 29 May 1996 21:15:14 patv
* bug fixes for v0.91a
*
* Rev 1.2 01 Sep 1995 17:48:44 patv
* First GPL release.
*
* Rev 1.1 30 Jul 1995 20:50:26 patv
* Eliminated version strings in ipl
*
* Rev 1.0 02 Jul 1995 8:06:06 patv
* Initial revision.
*/
#define FCB_SUCCESS 0
#define FCB_ERR_NODATA 1
#define FCB_ERR_EOF 3
#define FCB_ERR_WRITE 1
#define D_ALL D_NORMAL | D_RDONLY | D_HIDDEN | D_SYSTEM | D_DIR | D_ARCHIVE
#ifdef PROTO
fcb FAR *ExtFcbToFcb(xfcb FAR * lpExtFcb);
fcb FAR *CommonFcbInit(xfcb FAR * lpExtFcb, BYTE * pszBuffer, COUNT * pCurDrive);
void FcbNameInit(fcb FAR * lpFcb, BYTE * pszBuffer, COUNT * pCurDrive);
sft FAR *FcbGetSft(COUNT SftIndex);
VOID FcbNextRecord(fcb FAR * lpFcb);
sft FAR *FcbGetFreeSft(WORD FAR * sft_idx);
BOOL FcbCalcRec(xfcb FAR * lpXfcb);
VOID MoveDirInfo(dmatch FAR * lpDmatch, struct dirent FAR * lpDir);
#else
fcb FAR *ExtFcbToFcb();
fcb FAR *CommonFcbInit();
void FcbNameInit();
sft FAR *FcbGetSft();
VOID FcbNextRecord();
sft FAR *FcbGetFreeSft();
BOOL FcbCalcRec();
VOID MoveDirInfo();
#endif
static dmatch Dmatch;
VOID FatGetDrvData(COUNT drive, COUNT FAR * spc, COUNT FAR * bps,
COUNT FAR * nc, BYTE FAR ** mdp)
{
struct dpb *dpbp;
printf("FGDD\n");
/* first check for valid drive */
if ((drive < 0) || (drive > (lastdrive -1)) || (drive > NDEVS))
{
*spc = -1;
return;
}
/* next - "log" in the drive */
drive = (drive == 0 ? default_drive : drive - 1);
if (CDSp->cds_table[drive].cdsFlags & CDSNETWDRV) {
printf("FatGetDrvData not yet supported over network drives\n");
*spc = -1;
return;
}
dpbp = (struct dpb *)CDSp->cds_table[drive].cdsDpb;
dpbp->dpb_flags = -1;
if ((media_check(dpbp) < 0))
{
*spc = -1;
return;
}
/* get the data vailable from dpb */
*nc = dpbp->dpb_size;
*spc = dpbp->dpb_clsmask + 1;
*bps = dpbp->dpb_secsize;
/* Point to the media desctriptor fotr this drive */
*mdp = &(dpbp->dpb_mdb);
}
#define PARSE_SEP_STOP 0x01
#define PARSE_DFLT_DRIVE 0x02
#define PARSE_BLNK_FNAME 0x04
#define PARSE_BLNK_FEXT 0x08
#define PARSE_RET_NOWILD 0
#define PARSE_RET_WILD 1
#define PARSE_RET_BADDRIVE 0xff
#ifndef IPL
WORD FcbParseFname(int wTestMode, BYTE FAR ** lpFileName, fcb FAR * lpFcb)
{
COUNT nIndex;
WORD wRetCode = PARSE_RET_NOWILD;
/* pjv -- ExtFcbToFcb? */
/* Start out with some simple stuff first. Check if we are */
/* going to use a default drive specificaton. */
if (!(wTestMode & PARSE_DFLT_DRIVE))
lpFcb->fcb_drive = FDFLT_DRIVE;
if (!(wTestMode & PARSE_BLNK_FNAME))
{
for (nIndex = 0; nIndex < FNAME_SIZE; ++nIndex)
lpFcb->fcb_fname[nIndex] = ' ';
}
if (!(wTestMode & PARSE_BLNK_FEXT))
{
for (nIndex = 0; nIndex < FEXT_SIZE; ++nIndex)
lpFcb->fcb_fext[nIndex] = ' ';
}
/* Undocumented behavior, set record number & record size to 0 */
lpFcb->fcb_cublock = lpFcb->fcb_recsiz = 0;
if (!(wTestMode & PARSE_SEP_STOP))
{
*lpFileName = ParseSkipWh(*lpFileName);
if (TestCmnSeps(*lpFileName))
++ * lpFileName;
}
/* Undocumented "feature," we skip white space anyway */
*lpFileName = ParseSkipWh(*lpFileName);
/* Now check for drive specification */
if (*(*lpFileName + 1) == ':')
{
REG BYTE Drive = DosUpFChar(**lpFileName);
/* non-portable construct to be changed */
if (Drive < 'A' || Drive > 'Z')
return PARSE_RET_BADDRIVE;
Drive -= ('A' - 1);
if (Drive > (lastdrive -1))
return PARSE_RET_BADDRIVE;
else
lpFcb->fcb_drive = Drive;
*lpFileName += 2;
}
/* Now to format the file name into the string */
*lpFileName = GetNameField(*lpFileName, (BYTE FAR *) lpFcb->fcb_fname, FNAME_SIZE, (BOOL *) & wRetCode);
/* Do we have an extension? If do, format it else return */
if (**lpFileName == '.')
*lpFileName = GetNameField(++*lpFileName, (BYTE FAR *) lpFcb->fcb_fext, FEXT_SIZE, (BOOL *) & wRetCode);
return wRetCode ? PARSE_RET_WILD : PARSE_RET_NOWILD;
}
BYTE FAR *ParseSkipWh(BYTE FAR * lpFileName)
{
while (*lpFileName == ' ' || *lpFileName == '\t')
++lpFileName;
return lpFileName;
}
BOOL TestCmnSeps(BYTE FAR * lpFileName)
{
BYTE *pszTest,
*pszCmnSeps = ":<|>+=,";
for (pszTest = pszCmnSeps; *pszTest != '\0'; ++pszTest)
if (*lpFileName == *pszTest)
return TRUE;
return FALSE;
}
BOOL TestFieldSeps(BYTE FAR * lpFileName)
{
BYTE *pszTest,
*pszCmnSeps = "/\"[]<>|.";
/* Another non-portable construct */
if (*lpFileName <= ' ')
return TRUE;
for (pszTest = pszCmnSeps; *pszTest != '\0'; ++pszTest)
if (*lpFileName == *pszTest)
return TRUE;
return FALSE;
}
BYTE FAR *GetNameField(BYTE FAR * lpFileName, BYTE FAR * lpDestField,
COUNT nFieldSize, BOOL * pbWildCard)
{
COUNT nIndex = 0;
BYTE cFill = ' ';
*pbWildCard = FALSE;
while (*lpFileName != '\0' && !TestFieldSeps(lpFileName) && nIndex < nFieldSize)
{
if (*lpFileName == ' ')
break;
if (*lpFileName == '*')
{
*pbWildCard = TRUE;
cFill = '?';
++lpFileName;
break;
}
if (*lpFileName == '?')
*pbWildCard = TRUE;
*lpDestField++ = DosUpFChar(*lpFileName++);
++nIndex;
}
/* Blank out remainder of field on exit */
for (; nIndex < nFieldSize; ++nIndex)
*lpDestField++ = cFill;
return lpFileName;
}
static sft FAR *FcbGetSft(COUNT SftIndex)
{
/* Get the SFT block that contains the SFT */
for (lpCurSft = sfthead; lpCurSft != (sfttbl FAR *) - 1;
lpCurSft = lpCurSft->sftt_next)
{
if (SftIndex < lpCurSft->sftt_count)
break;
else
SftIndex -= lpCurSft->sftt_count;
}
/* If not found, return an error */
if (lpCurSft == (sfttbl FAR *) - 1)
return (sft FAR *) - 1;
/* finally, point to the right entry */
return (sft FAR *) & (lpCurSft->sftt_table[SftIndex]);
}
static VOID FcbNextRecord(fcb FAR * lpFcb)
{
if (++lpFcb->fcb_curec > 128)
{
lpFcb->fcb_curec = 0;
++lpFcb->fcb_cublock;
}
}
BOOL FcbRead(xfcb FAR * lpXfcb, COUNT * nErrorCode)
{
sft FAR *s;
LONG lPosit;
COUNT nRead;
psp FAR *p = MK_FP(cu_psp, 0);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Get the SFT block that contains the SFT */
if ((s = FcbGetSft(lpFcb->fcb_sftno)) == (sft FAR *) - 1)
return FALSE;
/* If this is not opened another error */
if (s->sft_count == 0)
return FALSE;
/* Now update the fcb and compute where we need to position */
/* to. */
lPosit = ((lpFcb->fcb_cublock * 128) + lpFcb->fcb_curec)
* lpFcb->fcb_recsiz;
if (SftSeek(s, lPosit, 0) != SUCCESS)
{
*nErrorCode = FCB_ERR_EOF;
return FALSE;
}
if (s->sft_flags & SFT_FSHARED)
{
nRead = Remote_RW(REM_READ, lpFcb->fcb_recsiz, p->ps_dta, s, nErrorCode);
}
else
{
/* Do the read */
nRead = dos_read(s->sft_status, p->ps_dta, lpFcb->fcb_recsiz);
}
/* Now find out how we will return and do it. */
if (nRead == lpFcb->fcb_recsiz)
{
*nErrorCode = FCB_SUCCESS;
FcbNextRecord(lpFcb);
return TRUE;
}
else if (nRead < 0)
{
*nErrorCode = FCB_ERR_EOF;
return TRUE;
}
else if (nRead == 0)
{
*nErrorCode = FCB_ERR_NODATA;
return FALSE;
}
else
{
COUNT nIdx,
nCount;
BYTE FAR *lpDta;
nCount = lpFcb->fcb_recsiz - nRead;
lpDta = (BYTE FAR *) & (p->ps_dta[nRead]);
for (nIdx = 0; nIdx < nCount; nIdx++)
*lpDta++ = 0;
*nErrorCode = FCB_ERR_EOF;
FcbNextRecord(lpFcb);
return FALSE;
}
}
BOOL FcbWrite(xfcb FAR * lpXfcb, COUNT * nErrorCode)
{
sft FAR *s;
LONG lPosit;
COUNT nWritten;
psp FAR *p = MK_FP(cu_psp, 0);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Get the SFT block that contains the SFT */
if ((s = FcbGetSft(lpFcb->fcb_sftno)) == (sft FAR *) - 1)
return FALSE;
/* If this is not opened another error */
if (s->sft_count == 0)
return FALSE;
/* Now update the fcb and compute where we need to position */
/* to. */
lPosit = ((lpFcb->fcb_cublock * 128) + lpFcb->fcb_curec)
* lpFcb->fcb_recsiz;
if (SftSeek(s, lPosit, 0) != SUCCESS)
{
*nErrorCode = FCB_ERR_EOF;
return FALSE;
}
if (s->sft_flags & SFT_FSHARED)
{
nWritten = Remote_RW(REM_WRITE, lpFcb->fcb_recsiz, p->ps_dta, s, nErrorCode);
}
else
{
/* Do the read */
nWritten = dos_write(s->sft_status, p->ps_dta, lpFcb->fcb_recsiz);
s->sft_size = dos_getcufsize(s->sft_status);
}
/* Now find out how we will return and do it. */
if (nWritten == lpFcb->fcb_recsiz)
{
lpFcb->fcb_fsize = s->sft_size;
FcbNextRecord(lpFcb);
*nErrorCode = FCB_SUCCESS;
return TRUE;
}
else if (nWritten <= 0)
{
*nErrorCode = FCB_ERR_WRITE;
return TRUE;
}
*nErrorCode = FCB_ERR_WRITE;
return FALSE;
}
BOOL FcbGetFileSize(xfcb FAR * lpXfcb)
{
COUNT FcbDrive,
FileNum;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
/* check for a device */
if (IsDevice(PriPathName) || (lpFcb->fcb_recsiz == 0))
{
return FALSE;
}
FileNum = dos_open(PriPathName, O_RDONLY);
if (FileNum >= 0)
{
LONG fsize;
/* Get the size */
fsize = dos_getfsize(FileNum);
/* compute the size and update the fcb */
lpFcb->fcb_rndm = fsize / lpFcb->fcb_recsiz;
if ((fsize % lpFcb->fcb_recsiz) != 0)
++lpFcb->fcb_rndm;
/* close the file and leave */
return dos_close(FileNum) == SUCCESS;
}
else
return FALSE;
}
BOOL FcbSetRandom(xfcb FAR * lpXfcb)
{
LONG lPosit;
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Now update the fcb and compute where we need to position */
/* to. */
lpFcb->fcb_rndm = (lpFcb->fcb_cublock * 128)
+ lpFcb->fcb_curec;
return TRUE;
}
BOOL FcbCalcRec(xfcb FAR * lpXfcb)
{
LONG lPosit;
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Now update the fcb and compute where we need to position */
/* to. */
lpFcb->fcb_cublock = lpFcb->fcb_rndm / 128;
lpFcb->fcb_curec = lpFcb->fcb_rndm % 128;
return TRUE;
}
BOOL FcbRandomBlockRead(xfcb FAR * lpXfcb, COUNT nRecords, COUNT * nErrorCode)
{
FcbCalcRec(lpXfcb);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
do
FcbRead(lpXfcb, nErrorCode);
while ((--nRecords > 0) && (*nErrorCode == 0));
/* Now update the fcb */
lpFcb->fcb_rndm = lpFcb->fcb_cublock * 128 + lpFcb->fcb_curec;
return TRUE;
}
BOOL FcbRandomBlockWrite(xfcb FAR * lpXfcb, COUNT nRecords, COUNT * nErrorCode)
{
FcbCalcRec(lpXfcb);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
do
FcbWrite(lpXfcb, nErrorCode);
while ((--nRecords > 0) && (*nErrorCode == 0));
/* Now update the fcb */
lpFcb->fcb_rndm = lpFcb->fcb_cublock * 128 + lpFcb->fcb_curec;
return TRUE;
}
BOOL FcbRandomRead(xfcb FAR * lpXfcb, COUNT * nErrorCode)
{
UWORD uwCurrentBlock;
UBYTE ucCurrentRecord;
FcbCalcRec(lpXfcb);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
uwCurrentBlock = lpFcb->fcb_cublock;
ucCurrentRecord = lpFcb->fcb_curec;
FcbRead(lpXfcb, nErrorCode);
lpFcb->fcb_cublock = uwCurrentBlock;
lpFcb->fcb_curec = ucCurrentRecord;
return TRUE;
}
BOOL FcbRandomWrite(xfcb FAR * lpXfcb, COUNT * nErrorCode)
{
UWORD uwCurrentBlock;
UBYTE ucCurrentRecord;
FcbCalcRec(lpXfcb);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
uwCurrentBlock = lpFcb->fcb_cublock;
ucCurrentRecord = lpFcb->fcb_curec;
FcbWrite(lpXfcb, nErrorCode);
lpFcb->fcb_cublock = uwCurrentBlock;
lpFcb->fcb_curec = ucCurrentRecord;
return TRUE;
}
static sft FAR *FcbGetFreeSft(WORD FAR * sft_idx)
{
WORD sys_idx = 0;
sfttbl FAR *sp;
/* Get the SFT block that contains the SFT */
for (sp = sfthead; sp != (sfttbl FAR *) - 1; sp = sp->sftt_next)
{
REG WORD i;
for (i = 0; i < sp->sftt_count; i++)
{
if (sp->sftt_table[i].sft_count == 0)
{
*sft_idx = sys_idx + i;
return (sft FAR *) & sp->sftt_table[sys_idx + i];
}
}
sys_idx += i;
}
/* If not found, return an error */
return (sft FAR *) - 1;
}
BOOL FcbCreate(xfcb FAR * lpXfcb)
{
WORD sft_idx;
sft FAR *sftp;
struct dhdr FAR *dhp;
COUNT FcbDrive;
/* get a free system file table entry */
if ((sftp = FcbGetFreeSft((WORD FAR *) & sft_idx)) == (sft FAR *) - 1)
return DE_TOOMANY;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
/* check for a device */
dhp = IsDevice(PriPathName);
if (dhp)
{
sftp->sft_count += 1;
sftp->sft_mode = O_RDWR;
sftp->sft_attrib = 0;
sftp->sft_flags =
((dhp->dh_attr & ~SFT_MASK) & ~SFT_FSHARED) | SFT_FDEVICE | SFT_FEOF;
sftp->sft_psp = cu_psp;
fbcopy(lpFcb->fcb_fname, sftp->sft_name, FNAME_SIZE + FEXT_SIZE);
sftp->sft_dev = dhp;
lpFcb->fcb_sftno = sft_idx;
lpFcb->fcb_curec = 0;
lpFcb->fcb_recsiz = 0;
lpFcb->fcb_fsize = 0;
lpFcb->fcb_date = dos_getdate();
lpFcb->fcb_time = dos_gettime();
lpFcb->fcb_rndm = 0;
return TRUE;
}
sftp->sft_status = dos_creat(PriPathName, 0);
if (sftp->sft_status >= 0)
{
lpFcb->fcb_drive = FcbDrive;
lpFcb->fcb_sftno = sft_idx;
lpFcb->fcb_curec = 0;
lpFcb->fcb_recsiz = 128;
lpFcb->fcb_fsize = 0;
lpFcb->fcb_date = dos_getdate();
lpFcb->fcb_time = dos_gettime();
lpFcb->fcb_rndm = 0;
sftp->sft_count += 1;
sftp->sft_mode = O_RDWR;
sftp->sft_attrib = 0;
sftp->sft_flags = 0;
sftp->sft_psp = cu_psp;
fbcopy((BYTE FAR *) & lpFcb->fcb_fname, (BYTE FAR *) & sftp->sft_name, FNAME_SIZE + FEXT_SIZE);
return TRUE;
}
else
return FALSE;
}
static fcb FAR *ExtFcbToFcb(xfcb FAR * lpExtFcb)
{
if (*((UBYTE FAR *) lpExtFcb) == 0xff)
return &lpExtFcb->xfcb_fcb;
else
return (fcb FAR *) lpExtFcb;
}
static fcb FAR *CommonFcbInit(xfcb FAR * lpExtFcb, BYTE * pszBuffer,
COUNT * pCurDrive)
{
BYTE FAR *lpszFcbFname,
*lpszFcbFext;
COUNT nDrvIdx,
nFnameIdx,
nFextIdx;
fcb FAR *lpFcb;
/* convert to fcb if needed first */
lpFcb = ExtFcbToFcb(lpExtFcb);
/* Build a traditional DOS file name */
FcbNameInit(lpFcb, pszBuffer, pCurDrive);
/* and return the fcb pointer */
return lpFcb;
}
void FcbNameInit(fcb FAR * lpFcb, BYTE * pszBuffer, COUNT * pCurDrive)
{
BYTE FAR *lpszFcbFname,
FAR * lpszFcbFext;
COUNT nDrvIdx,
nFnameIdx,
nFextIdx;
/* Build a traditional DOS file name */
lpszFcbFname = (BYTE FAR *) lpFcb->fcb_fname;
if (lpFcb->fcb_drive != 0)
{
*pCurDrive = lpFcb->fcb_drive;
pszBuffer[0] = 'A' + lpFcb->fcb_drive - 1;
pszBuffer[1] = ':';
nDrvIdx = 2;
}
else
{
*pCurDrive = default_drive + 1;
nDrvIdx = 0;
}
for (nFnameIdx = 0; nFnameIdx < FNAME_SIZE; nFnameIdx++)
{
if (*lpszFcbFname != ' ')
pszBuffer[nDrvIdx + nFnameIdx] = *lpszFcbFname++;
else
break;
}
lpszFcbFext = (BYTE FAR *) lpFcb->fcb_fext;
if (*lpszFcbFext != ' ')
{
pszBuffer[nDrvIdx + nFnameIdx++] = '.';
for (nFextIdx = 0; nFextIdx < FEXT_SIZE; nFextIdx++)
{
if (*lpszFcbFext != ' ')
pszBuffer[nDrvIdx + nFnameIdx + nFextIdx] =
*lpszFcbFext++;
else
break;
}
}
else
nFextIdx = 0;
pszBuffer[nDrvIdx + nFnameIdx + nFextIdx] = '\0';
}
BOOL FcbOpen(xfcb FAR * lpXfcb)
{
WORD sft_idx;
sft FAR *sftp;
struct dhdr FAR *dhp;
COUNT FcbDrive;
/* get a free system file table entry */
if ((sftp = FcbGetFreeSft((WORD FAR *) & sft_idx)) == (sft FAR *) - 1)
return DE_TOOMANY;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
/* check for a device */
dhp = IsDevice(PriPathName);
if (dhp )
{
sftp->sft_count += 1;
sftp->sft_mode = O_RDWR;
sftp->sft_attrib = 0;
sftp->sft_flags =
((dhp->dh_attr & ~SFT_MASK) & ~SFT_FSHARED) | SFT_FDEVICE | SFT_FEOF;
sftp->sft_psp = cu_psp;
fbcopy(lpFcb->fcb_fname, sftp->sft_name, FNAME_SIZE + FEXT_SIZE);
sftp->sft_dev = dhp;
lpFcb->fcb_sftno = sft_idx;
lpFcb->fcb_curec = 0;
lpFcb->fcb_recsiz = 0;
lpFcb->fcb_fsize = 0;
lpFcb->fcb_date = dos_getdate();
lpFcb->fcb_time = dos_gettime();
lpFcb->fcb_rndm = 0;
return TRUE;
}
fbcopy((BYTE FAR *) & lpFcb->fcb_fname, (BYTE FAR *) & sftp->sft_name, FNAME_SIZE + FEXT_SIZE);
if ((FcbDrive < 0) || (FcbDrive > (lastdrive -1))) {
return DE_INVLDDRV;
}
if (CDSp->cds_table[FcbDrive].cdsFlags & CDSNETWDRV) {
COUNT result;
lpCurSft = (sfttbl FAR *)sftp;
result = int2f_Remote_call(REM_OPEN, 0, 0, 0, (VOID FAR *) sftp, 0, MK_FP(0, O_RDWR));
result = -result;
sftp->sft_status = result;
}
else {
sftp->sft_status = dos_open(PriPathName, O_RDWR);
sftp->sft_size = dos_getfsize(sftp->sft_status);
dos_getftime(sftp->sft_status,
(date FAR *) & sftp->sft_date,
(time FAR *) & sftp->sft_time);
}
if (sftp->sft_status >= 0)
{
lpFcb->fcb_drive = FcbDrive;
lpFcb->fcb_sftno = sft_idx;
lpFcb->fcb_curec = 0;
lpFcb->fcb_recsiz = 128;
lpFcb->fcb_fsize = sftp->sft_size;
lpFcb->fcb_date = sftp->sft_date;
lpFcb->fcb_time = sftp->sft_time;
lpFcb->fcb_rndm = 0;
sftp->sft_count += 1;
sftp->sft_mode = O_RDWR;
sftp->sft_attrib = 0;
sftp->sft_flags = 0;
sftp->sft_psp = cu_psp;
return TRUE;
}
else
return FALSE;
}
BOOL FcbDelete(xfcb FAR * lpXfcb)
{
COUNT FcbDrive;
/* Build a traditional DOS file name */
CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
if ((FcbDrive < 0) || (FcbDrive > (lastdrive -1))) {
return DE_INVLDDRV;
}
current_ldt = &CDSp->cds_table[FcbDrive];
if (CDSp->cds_table[FcbDrive].cdsFlags & CDSNETWDRV) {
return -int2f_Remote_call(REM_DELETE, 0, 0, 0, 0, 0, 0);
}
/* check for a device */
if (IsDevice(PriPathName))
{
return FALSE;
}
else
{
BYTE FAR *lpOldDta = dta;
dmatch Dmatch;
dta = (BYTE FAR *) & Dmatch;
if (dos_findfirst(D_ALL, PriPathName[1] == ':' ? &PriPathName[2] : PriPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
do
{
if (dos_delete(Dmatch.dm_name) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
}
while (dos_findnext() == SUCCESS);
dta = lpOldDta;
return TRUE;
}
}
BOOL FcbRename(xfcb FAR * lpXfcb)
{
rfcb FAR *lpRenameFcb;
COUNT FcbDrive;
/* Build a traditional DOS file name */
lpRenameFcb = (rfcb FAR *) CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
/* check for a device */
if (IsDevice(PriPathName))
{
return FALSE;
}
else
{
BYTE FAR *lpOldDta = dta;
dmatch Dmatch;
dta = (BYTE FAR *) & Dmatch;
if (dos_findfirst(D_ALL, PriPathName[1] == ':' ? &PriPathName[2] : PriPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
do
{
fcb LocalFcb;
BYTE *pToName,
*pszFrom;
BYTE FAR *pFromPattern;
COUNT nIndex;
/* First, expand the find match into fcb style */
/* file name entry */
/* Fill with blanks first */
for (pToName = LocalFcb.fcb_fname, nIndex = 0;
nIndex < FNAME_SIZE; nIndex++)
{
*pToName++ = ' ';
}
for (pToName = LocalFcb.fcb_fext, nIndex = 0;
nIndex < FEXT_SIZE; nIndex++)
{
*pToName++ = ' ';
}
/* next move in the file name while overwriting */
/* the filler blanks */
pszFrom = Dmatch.dm_name;
pToName = LocalFcb.fcb_fname;
for (nIndex = 0; nIndex < FNAME_SIZE; nIndex++)
{
if (*pszFrom != 0 && *pszFrom != '.')
*pToName++ = *pszFrom++;
else if (*pszFrom == '.')
{
++pszFrom;
break;
}
else
break;
}
if (*pszFrom != '\0')
{
pToName = LocalFcb.fcb_fext;
for (nIndex = 0; nIndex < FEXT_SIZE; nIndex++)
{
if (*pszFrom != '\0')
*pToName++ = *pszFrom++;
else
break;
}
}
/* Overlay the pattern, skipping '?' */
/* I'm cheating because this assumes that the */
/* struct alignments are on byte boundaries */
pToName = LocalFcb.fcb_fname;
for (pFromPattern = lpRenameFcb->renNewName,
nIndex = 0; nIndex < FNAME_SIZE + FEXT_SIZE; nIndex++)
{
if (*pFromPattern != '?')
*pToName++ = *pFromPattern++;
else
++pFromPattern;
}
/* now to build a dos name again */
LocalFcb.fcb_drive = 0;
FcbNameInit((fcb FAR *) & LocalFcb, PriPathName, &FcbDrive);
if (dos_rename(Dmatch.dm_name,
PriPathName[1] == ':' ? &PriPathName[2] : PriPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
}
while (dos_findnext() == SUCCESS);
dta = lpOldDta;
return TRUE;
}
}
void MoveDirInfo(dmatch FAR * lpDmatch, struct dirent FAR * lpDir)
{
BYTE FAR *lpToName,
FAR * lpszFrom;
COUNT nIndex;
/* First, expand the find match into dir style */
/* file name entry */
/* Fill with blanks first */
for (lpToName = lpDir->dir_name, nIndex = 0;
nIndex < FNAME_SIZE; nIndex++)
{
*lpToName++ = ' ';
}
for (lpToName = lpDir->dir_ext, nIndex = 0;
nIndex < FEXT_SIZE; nIndex++)
{
*lpToName++ = ' ';
}
/* next move in the file name while overwriting */
/* the filler blanks */
lpszFrom = lpDmatch->dm_name;
lpToName = lpDir->dir_name;
for (nIndex = 0; nIndex < FNAME_SIZE; nIndex++)
{
if (*lpszFrom != 0 && *lpszFrom != '.')
*lpToName++ = *lpszFrom++;
else
break;
}
if (*lpszFrom != '\0')
{
if (*lpszFrom == '.')
++lpszFrom;
lpToName = lpDir->dir_ext;
for (nIndex = 0; nIndex < FEXT_SIZE; nIndex++)
{
if (*lpszFrom != '\0')
*lpToName++ = *lpszFrom++;
else
break;
}
}
for (nIndex = 0; nIndex < 10; nIndex++)
lpDir->dir_reserved[nIndex] = 0;
lpDir->dir_attrib = lpDmatch->dm_attr_fnd;
lpDir->dir_time = lpDmatch->dm_time;
lpDir->dir_date = lpDmatch->dm_date;
lpDir->dir_start = lpDmatch->dm_cluster;
lpDir->dir_size = lpDmatch->dm_size;
}
BOOL FcbClose(xfcb FAR * lpXfcb)
{
sft FAR *s;
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Get the SFT block that contains the SFT */
if ((s = FcbGetSft(lpFcb->fcb_sftno)) == (sft FAR *) - 1)
return FALSE;
/* If this is not opened another error */
if (s->sft_count == 0)
return FALSE;
if (s->sft_flags & SFT_FSHARED)
{
int2f_Remote_call(REM_CLOSE, 0, 0, 0, (VOID FAR *) s, 0, 0);
}
/* now just drop the count if a device, else */
/* call file system handler */
if (s->sft_flags & SFT_FDEVICE)
{
s->sft_count -= 1;
return TRUE;
}
else
{
s->sft_count -= 1;
if (s->sft_count > 0)
return SUCCESS;
else
{
/* change time and set file size */
dos_setftime(s->sft_status,
(date FAR *) & lpFcb->fcb_date,
(time FAR *) & lpFcb->fcb_time);
dos_setfsize(s->sft_status,
lpFcb->fcb_fsize);
return dos_close(s->sft_status) == SUCCESS;
}
}
}
BOOL FcbFindFirst(xfcb FAR * lpXfcb)
{
BYTE FAR *lpOldDta;
BYTE FAR *lpDir;
COUNT nIdx,
FcbDrive;
psp FAR *lpPsp = MK_FP(cu_psp, 0);
/* First, move the dta to a local and change it around to match */
/* our functions. */
lpDir = (BYTE FAR *) dta;
dta = (BYTE FAR *) & Dmatch;
/* Next initialze local variables by moving them from the fcb */
lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
if (lpXfcb->xfcb_flag == 0xff)
{
wAttr = lpXfcb->xfcb_attrib;
fbcopy(lpXfcb, lpDir, 7);
lpDir += 7;
}
else
wAttr = D_ALL;
*lpDir++ = FcbDrive;
if (dos_findfirst(wAttr, SecPathName) != SUCCESS)
{
dta = lpPsp->ps_dta;
return FALSE;
}
MoveDirInfo((dmatch FAR *) & Dmatch, (struct dirent FAR *)lpDir);
lpFcb->fcb_dirclst = Dmatch.dm_cluster;
lpFcb->fcb_diroff = Dmatch.dm_entry;
/*
This is undocumented and seen using Pcwatch and Ramview.
The First byte is the current directory count and the second seems
to be the attribute byte.
*/
lpFcb->fcb_sftno = Dmatch.dm_drive; /* MSD seems to save this @ fcb_date.*/
#if 0
lpFcb->fcb_cublock = Dmatch.dm_entry;
lpFcb->fcb_cublock *= 0x100;
lpFcb->fcb_cublock += wAttr;
#endif
dta = lpPsp->ps_dta;
return TRUE;
}
BOOL FcbFindNext(xfcb FAR * lpXfcb)
{
BYTE FAR *lpOldDta;
BYTE FAR *lpDir;
COUNT nIdx,
FcbDrive;
psp FAR *lpPsp = MK_FP(cu_psp, 0);
/* First, move the dta to a local and change it around to match */
/* our functions. */
lpDir = (BYTE FAR *) dta;
dta = (BYTE FAR *) & Dmatch;
/* Next initialze local variables by moving them from the fcb */
lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
if ((xfcb FAR *) lpFcb != lpXfcb)
{
wAttr = lpXfcb->xfcb_attrib;
fbcopy(lpXfcb, lpDir, 7);
lpDir += 7;
}
else
wAttr = D_ALL;
/* Reconstrct the dirmatch structure from the fcb */
*lpDir++ = FcbDrive;
Dmatch.dm_drive = lpFcb->fcb_sftno;
fbcopy(lpFcb->fcb_fname, (BYTE FAR *) Dmatch.dm_name_pat, FNAME_SIZE + FEXT_SIZE);
DosUpFMem((BYTE FAR *) Dmatch.dm_name_pat, FNAME_SIZE + FEXT_SIZE);
Dmatch.dm_attr_srch = wAttr;
Dmatch.dm_entry = lpFcb->fcb_diroff;
Dmatch.dm_cluster = lpFcb->fcb_dirclst;
if (dos_findnext() != SUCCESS)
{
dta = lpPsp->ps_dta;
CritErrCode = 0x12;
return FALSE;
}
MoveDirInfo((dmatch FAR *) & Dmatch, (struct dirent FAR *)lpDir);
lpFcb->fcb_dirclst = Dmatch.dm_cluster;
lpFcb->fcb_diroff = Dmatch.dm_entry;
lpFcb->fcb_sftno = Dmatch.dm_drive;
#if 0
lpFcb->fcb_cublock = Dmatch.dm_entry;
lpFcb->fcb_cublock *= 0x100;
lpFcb->fcb_cublock += wAttr;
#endif
dta = lpPsp->ps_dta;
return TRUE;
}
#endif
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