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FreeDOS/kernel/fcbfns.c
Bart Oldeman 048c87bbac FAT32 support, misc fixes, INT2F/AH=12 support, drive B: handling 
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@305 6ac86273-5f31-0410-b378-82cca8765d1b
2001-09-23 20:39:44 +00:00

1050 lines
27 KiB
C
Raw Blame History

/****************************************************************/
/* */
/* 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 1.18 2001/09/23 20:39:44 bartoldeman
* FAT32 support, misc fixes, INT2F/AH=12 support, drive B: handling
*
* Revision 1.17 2001/08/20 20:32:15 bartoldeman
* Truename, get free space and ctrl-break fixes.
*
* Revision 1.16 2001/08/19 12:58:36 bartoldeman
* Time and date fixes, Ctrl-S/P, findfirst/next, FCBs, buffers, tsr unloading
*
* Revision 1.15 2001/07/24 16:56:29 bartoldeman
* fixes for FCBs, DJGPP ls, DBLBYTE, dyninit allocation (2024e).
*
* Revision 1.14 2001/07/23 12:47:42 bartoldeman
* FCB fixes and clean-ups, exec int21/ax=4b01, initdisk.c printf
*
* Revision 1.13 2001/07/22 01:58:58 bartoldeman
* Support for Brian's FORMAT, DJGPP libc compilation, cleanups, MSCDEX
*
* Revision 1.12 2001/07/09 22:19:33 bartoldeman
* LBA/FCB/FAT/SYS/Ctrl-C/ioctl fixes + memory savings
*
* Revision 1.11 2001/06/03 14:16:17 bartoldeman
* BUFFERS tuning and misc bug fixes/cleanups (2024c).
*
* Revision 1.10 2001/04/21 22:32:53 bartoldeman
* Init DS=Init CS, fixed stack overflow problems and misc bugs.
*
* Revision 1.9 2001/04/15 03:21:50 bartoldeman
* See history.txt for the list of fixes.
*
* Revision 1.8 2001/03/30 22:27:42 bartoldeman
* Saner lastdrive handling.
*
* Revision 1.7 2001/03/21 02:56:26 bartoldeman
* See history.txt for changes. Bug fixes and HMA support are the main ones.
*
* 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);
VOID FcbNextRecord(fcb FAR * lpFcb);
BOOL FcbCalcRec(xfcb FAR * lpXfcb);
#else
fcb FAR *ExtFcbToFcb();
fcb FAR *CommonFcbInit();
void FcbNameInit();
VOID FcbNextRecord();
BOOL FcbCalcRec();
#endif
#define TestCmnSeps(lpFileName) (strchr(":<|>+=,", *lpFileName) != NULL)
#define TestFieldSeps(lpFileName) (*(lpFileName) <= ' ' || strchr("/\"[]<>|.", *lpFileName) != NULL)
static dmatch Dmatch;
VOID FatGetDrvData(UCOUNT drive, COUNT FAR * spc, COUNT FAR * bps,
COUNT FAR * nc, BYTE FAR ** mdp)
{
struct dpb FAR *dpbp;
struct cds FAR *cdsp;
#ifdef WITHFAT32
UCOUNT shift = 0;
ULONG cluster_size, ntotal;
#endif
/* first check for valid drive */
*spc = -1;
drive = (drive == 0 ? default_drive : drive - 1);
if (drive >= lastdrive)
return;
cdsp = &CDSp->cds_table[drive];
if (!(cdsp->cdsFlags & CDSVALID))
return;
/* next - "log" in the drive */
if (cdsp->cdsFlags & CDSNETWDRV) {
/* Undoc DOS says, its not supported for
network drives. so it's probably OK */
/*printf("FatGetDrvData not yet supported over network drives\n");*/
return;
}
dpbp = CDSp->cds_table[drive].cdsDpb;
if (dpbp == NULL)
{
return;
}
dpbp->dpb_flags = -1;
if ((media_check(dpbp) < 0))
{
return;
}
#ifdef WITHFAT32
cluster_size = (dpbp->dpb_clsmask + 1) * dpbp->dpb_secsize;
ntotal = dpbp->dpb_size - 1;
while (cluster_size <= 0x7fff) {
cluster_size <<= 1;
ntotal >>= 1;
shift++;
}
/* get the data available from dpb */
if (ntotal > 0xfffe) ntotal = 0xfffe;
*nc = (UCOUNT)ntotal;
*spc = (dpbp->dpb_clsmask + 1) << shift;
#else
/* get the data vailable from dpb */
*nc = dpbp->dpb_size - 1;
*spc = dpbp->dpb_clsmask + 1;
#endif
*bps = dpbp->dpb_secsize;
/* Point to the media desctriptor for this drive */
*mdp = (BYTE FAR*)&(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 wRetCodeName,wRetCodeExt;
/* 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) == ':')
{
/* non-portable construct to be changed */
REG UBYTE Drive = DosUpFChar(**lpFileName) - 'A';
if (Drive >= lastdrive)
return PARSE_RET_BADDRIVE;
lpFcb->fcb_drive = Drive + 1;
*lpFileName += 2;
}
/* special cases: '.' and '..' */
if (**lpFileName == '.')
{
lpFcb->fcb_fname[0]='.';
++*lpFileName;
if (**lpFileName == '.')
{
lpFcb->fcb_fname[1]='.';
++*lpFileName;
}
return PARSE_RET_NOWILD;
}
/* Now to format the file name into the string */
*lpFileName = GetNameField(*lpFileName, (BYTE FAR *) lpFcb->fcb_fname, FNAME_SIZE, (BOOL *) & wRetCodeName);
/* Do we have an extension? If do, format it else return */
if (**lpFileName == '.')
*lpFileName = GetNameField(++*lpFileName, (BYTE FAR *) lpFcb->fcb_fext, FEXT_SIZE, (BOOL *) & wRetCodeExt);
return (wRetCodeName|wRetCodeExt) ? PARSE_RET_WILD : PARSE_RET_NOWILD;
}
BYTE FAR *ParseSkipWh(BYTE FAR * lpFileName)
{
while (*lpFileName == ' ' || *lpFileName == '\t')
++lpFileName;
return lpFileName;
}
#if 0 /* defined above */
BOOL TestCmnSeps(BYTE FAR * lpFileName)
{
BYTE *pszTest,
*pszCmnSeps = ":<|>+=,";
for (pszTest = pszCmnSeps; *pszTest != '\0'; ++pszTest)
if (*lpFileName == *pszTest)
return TRUE;
return FALSE;
}
#endif
#if 0
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;
}
#endif
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 VOID FcbNextRecord(fcb FAR * lpFcb)
{
if (++lpFcb->fcb_curec > 128)
{
lpFcb->fcb_curec = 0;
++lpFcb->fcb_cublock;
}
}
static ULONG FcbRec(VOID)
{
UWORD tmp = 128;
return ((ULONG)lpFcb->fcb_cublock * tmp) + lpFcb->fcb_curec;
}
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 = idx_to_sft(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 = FcbRec() * 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 = idx_to_sft(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 = FcbRec() * 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, hndl;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
/* check for a device */
if (IsDevice(SecPathName) || (lpFcb->fcb_recsiz == 0))
{
return FALSE;
}
hndl = DosOpen(SecPathName, O_RDONLY);
if (hndl >= 0)
{
LONG fsize;
/* Get the size */
fsize = DosGetFsize(hndl);
/* 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 DosClose(hndl) == SUCCESS;
}
else
return FALSE;
}
BOOL FcbSetRandom(xfcb FAR * lpXfcb)
{
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* Now update the fcb and compute where we need to position */
/* to. */
lpFcb->fcb_rndm = FcbRec();
return TRUE;
}
BOOL FcbCalcRec(xfcb FAR * lpXfcb)
{
UWORD div=128;
/* 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 / div;
lpFcb->fcb_curec = lpFcb->fcb_rndm & 127;
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 = FcbRec();
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 = FcbRec();
return TRUE;
}
BOOL FcbRandomIO(xfcb FAR * lpXfcb, COUNT * nErrorCode,
BOOL (*FcbFunc)(xfcb FAR *, COUNT *))
{
UWORD uwCurrentBlock;
UBYTE ucCurrentRecord;
FcbCalcRec(lpXfcb);
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
uwCurrentBlock = lpFcb->fcb_cublock;
ucCurrentRecord = lpFcb->fcb_curec;
(*FcbFunc)(lpXfcb, nErrorCode);
lpFcb->fcb_cublock = uwCurrentBlock;
lpFcb->fcb_curec = ucCurrentRecord;
return TRUE;
}
/*
static sft FAR *FcbGetFreeSft(COUNT * sft_idx)
see get_free_sft in dosfns.c
*/
BOOL FcbCreate(xfcb FAR * lpXfcb)
{
COUNT sft_idx, FcbDrive;
struct dhdr FAR *dhp;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
sft_idx = DosCreatSft(PriPathName, 0);
if (sft_idx < 0)
return FALSE;
/* check for a device */
dhp = IsDevice(PriPathName);
lpFcb->fcb_sftno = sft_idx;
lpFcb->fcb_curec = 0;
lpFcb->fcb_recsiz = (dhp ? 0 : 128);
if (!dhp) lpFcb->fcb_drive = FcbDrive;
lpFcb->fcb_fsize = 0;
lpFcb->fcb_date = dos_getdate();
lpFcb->fcb_time = dos_gettime();
lpFcb->fcb_rndm = 0;
return TRUE;
}
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)
{
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 * szBuffer, COUNT * pCurDrive)
{
BYTE loc_szBuffer[2+FNAME_SIZE+1+FEXT_SIZE+1]; /* 'A:' + '.' + '\0' */
BYTE *pszBuffer = loc_szBuffer;
/* Build a traditional DOS file name */
if (lpFcb->fcb_drive != 0)
{
*pCurDrive = lpFcb->fcb_drive;
pszBuffer[0] = 'A' + lpFcb->fcb_drive - 1;
pszBuffer[1] = ':';
pszBuffer += 2;
}
else
{
*pCurDrive = default_drive + 1;
}
ConvertName83ToNameSZ(pszBuffer, (BYTE FAR *) lpFcb->fcb_fname);
truename(loc_szBuffer, szBuffer, FALSE);
/* XXX fix truename error handling */
}
BOOL FcbOpen(xfcb FAR * lpXfcb)
{
sft FAR *sftp;
struct dhdr FAR *dhp;
COUNT FcbDrive, sft_idx;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, PriPathName, &FcbDrive);
sft_idx = DosOpenSft(PriPathName, O_RDWR);
if (sft_idx < 0)
return FALSE;
/* check for a device */
lpFcb->fcb_curec = 0;
lpFcb->fcb_rndm = 0;
lpFcb->fcb_sftno = sft_idx;
dhp = IsDevice(PriPathName);
if (dhp )
{
lpFcb->fcb_recsiz = 0;
lpFcb->fcb_fsize = 0;
lpFcb->fcb_date = dos_getdate();
lpFcb->fcb_time = dos_gettime();
}
else
{
sftp = idx_to_sft(sft_idx);
lpFcb->fcb_drive = FcbDrive;
lpFcb->fcb_recsiz = 128;
lpFcb->fcb_fsize = sftp->sft_size;
lpFcb->fcb_date = sftp->sft_date;
lpFcb->fcb_time = sftp->sft_time;
}
return TRUE;
}
BOOL FcbDelete(xfcb FAR * lpXfcb)
{
COUNT FcbDrive;
/* Build a traditional DOS file name */
CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
/* check for a device */
if (IsDevice(SecPathName))
{
return FALSE;
}
else
{
BYTE FAR *lpOldDta = dta;
dmatch Dmatch;
dta = (BYTE FAR *) & Dmatch;
if (DosFindFirst(D_ALL, SecPathName[1] == ':' ? &SecPathName[2] : SecPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
do
{
truename(Dmatch.dm_name, SecPathName, FALSE);
if (DosDelete(SecPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
}
while (DosFindNext() == 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, SecPathName, &FcbDrive);
/* check for a device */
if (IsDevice(SecPathName))
{
return FALSE;
}
else
{
BYTE FAR *lpOldDta = dta;
dmatch Dmatch;
dta = (BYTE FAR *) & Dmatch;
if (DosFindFirst(D_ALL, SecPathName[1] == ':' ? &SecPathName[2] : SecPathName) != 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 */
memset(LocalFcb.fcb_fname, ' ', FNAME_SIZE);
memset(LocalFcb.fcb_fext, ' ', FEXT_SIZE);
/* 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, SecPathName, &FcbDrive);
truename(Dmatch.dm_name, PriPathName, FALSE);
if (DosRenameTrue(PriPathName, SecPathName) != SUCCESS)
{
dta = lpOldDta;
return FALSE;
}
}
while (DosFindNext() == SUCCESS);
dta = lpOldDta;
return TRUE;
}
}
/* TE:the MoveDirInfo() is now done by simply copying the dirEntry into the FCB
this prevents problems with ".", ".." and saves code
BO:use global SearchDir, as produced by FindFirst/Next
*/
BOOL FcbClose(xfcb FAR * lpXfcb)
{
sft FAR *s;
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
/* An already closed FCB can be closed again without error */
if (lpFcb->fcb_sftno == (BYTE)0xff)
return TRUE;
/* Get the SFT block that contains the SFT */
if ((s = idx_to_sft(lpFcb->fcb_sftno)) == (sft FAR *) - 1)
return FALSE;
/* change time and set file size */
s->sft_size = lpFcb->fcb_fsize;
if (!(s->sft_flags & SFT_FSHARED))
dos_setfsize(s->sft_status, lpFcb->fcb_fsize);
DosSetFtimeSft(lpFcb->fcb_sftno, lpFcb->fcb_date, lpFcb->fcb_time);
if (DosCloseSft(lpFcb->fcb_sftno) == SUCCESS) {
lpFcb->fcb_sftno = (BYTE)0xff;
return TRUE;
}
return FALSE;
}
/* close all files opened by FCBs
DosCloseSft checks the open count (has to be 1) and current psp
*/
VOID FcbCloseAll()
{
COUNT idx = 0;
for (idx = 0; DosCloseSft(idx) != DE_INVLDHNDL; idx++)
;
}
BOOL FcbFindFirst(xfcb FAR * lpXfcb)
{
BYTE FAR *lpDir;
COUNT 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;
if (DosFindFirst(wAttr, SecPathName) != SUCCESS)
{
dta = lpPsp->ps_dta;
return FALSE;
}
*lpDir++ = FcbDrive;
fmemcpy(lpDir, &SearchDir, sizeof(struct dirent));
lpFcb->fcb_dirclst = (UWORD)Dmatch.dm_dircluster;
lpFcb->fcb_strtclst = 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 *lpDir;
COUNT 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);
/* Reconstrct the dirmatch structure from the fcb */
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_strtclst;
Dmatch.dm_dircluster = lpFcb->fcb_dirclst;
if ((xfcb FAR *) lpFcb != lpXfcb)
{
wAttr = lpXfcb->xfcb_attrib;
fbcopy(lpXfcb, lpDir, 7);
lpDir += 7;
}
else
wAttr = D_ALL;
if (DosFindNext() != SUCCESS)
{
dta = lpPsp->ps_dta;
CritErrCode = 0x12;
return FALSE;
}
*lpDir++ = FcbDrive;
fmemcpy((struct dirent FAR *)lpDir, &SearchDir, sizeof(struct dirent));
lpFcb->fcb_dirclst = (UWORD)Dmatch.dm_dircluster;
lpFcb->fcb_strtclst = 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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