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Rename the global lpFcb variable to sda_lpFcb. Then use local lpFcb

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variables where necessary. This clears up the confusing shadowing.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@716 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2003-10-16 13:01:55 +00:00
parent fdb58291c4
commit 61d87d82bb
3 changed files with 21 additions and 16 deletions
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31
kernel/fcbfns.c
View File

@ -235,7 +235,7 @@ STATIC VOID FcbNextRecord(fcb FAR * lpFcb)
}
}
STATIC ULONG FcbRec(VOID)
STATIC ULONG FcbRec(fcb FAR *lpFcb)
{
return ((ULONG) lpFcb->fcb_cublock * 128) + lpFcb->fcb_curec;
}
@ -245,6 +245,7 @@ UBYTE FcbReadWrite(xfcb FAR * lpXfcb, UCOUNT recno, int mode)
ULONG lPosit;
long nTransfer;
BYTE FAR * FcbIoPtr = dta;
fcb FAR *lpFcb;
FcbIoPtr += recno * lpFcb->fcb_recsiz;
@ -257,7 +258,7 @@ UBYTE FcbReadWrite(xfcb FAR * lpXfcb, UCOUNT recno, int mode)
/* Now update the fcb and compute where we need to position */
/* to. */
lPosit = FcbRec() * lpFcb->fcb_recsiz;
lPosit = FcbRec(lpFcb) * lpFcb->fcb_recsiz;
if ((CritErrCode = -SftSeek(lpFcb->fcb_sftno, lPosit, 0)) != SUCCESS)
return FCB_ERR_NODATA;
@ -287,7 +288,7 @@ UBYTE FcbGetFileSize(xfcb FAR * lpXfcb)
int FcbDrive, sft_idx;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
fcb FAR *lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
/* check for a device */
if (!lpFcb || IsDevice(SecPathName) || (lpFcb->fcb_recsiz == 0))
@ -318,18 +319,18 @@ UBYTE FcbGetFileSize(xfcb FAR * lpXfcb)
void FcbSetRandom(xfcb FAR * lpXfcb)
{
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
fcb FAR *lpFcb = ExtFcbToFcb(lpXfcb);
/* Now update the fcb and compute where we need to position */
/* to. */
lpFcb->fcb_rndm = FcbRec();
lpFcb->fcb_rndm = FcbRec(lpFcb);
}
void FcbCalcRec(xfcb FAR * lpXfcb)
{
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
fcb FAR *lpFcb = ExtFcbToFcb(lpXfcb);
/* Now update the fcb and compute where we need to position */
/* to. */
@ -341,6 +342,7 @@ UBYTE FcbRandomBlockIO(xfcb FAR * lpXfcb, UWORD *nRecords, int mode)
{
unsigned recno;
UBYTE nErrorCode = FCB_SUCCESS;
fcb FAR *lpFcb;
FcbCalcRec(lpXfcb);
@ -359,7 +361,7 @@ UBYTE FcbRandomBlockIO(xfcb FAR * lpXfcb, UWORD *nRecords, int mode)
*nRecords = recno;
/* Now update the fcb */
lpFcb->fcb_rndm = FcbRec();
lpFcb->fcb_rndm = FcbRec(lpFcb);
return nErrorCode;
}
@ -369,6 +371,7 @@ UBYTE FcbRandomIO(xfcb FAR * lpXfcb, int mode)
UWORD uwCurrentBlock;
UBYTE ucCurrentRecord;
UBYTE nErrorCode;
fcb FAR *lpFcb;
FcbCalcRec(lpXfcb);
@ -393,7 +396,7 @@ UBYTE FcbOpen(xfcb FAR * lpXfcb, unsigned flags)
unsigned attr = 0;
/* Build a traditional DOS file name */
lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
fcb FAR *lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
if (lpFcb == NULL)
return FCB_ERROR;
@ -431,9 +434,10 @@ UBYTE FcbOpen(xfcb FAR * lpXfcb, unsigned flags)
STATIC fcb FAR *ExtFcbToFcb(xfcb FAR * lpExtFcb)
{
if (*((UBYTE FAR *) lpExtFcb) == 0xff)
return &lpExtFcb->xfcb_fcb;
sda_lpFcb = &lpExtFcb->xfcb_fcb;
else
return (fcb FAR *) lpExtFcb;
sda_lpFcb = (fcb FAR *) lpExtFcb;
return sda_lpFcb;
}
STATIC fcb FAR *CommonFcbInit(xfcb FAR * lpExtFcb, BYTE * pszBuffer,
@ -442,7 +446,7 @@ STATIC fcb FAR *CommonFcbInit(xfcb FAR * lpExtFcb, BYTE * pszBuffer,
fcb FAR *lpFcb;
/* convert to fcb if needed first */
lpFcb = ExtFcbToFcb(lpExtFcb);
sda_lpFcb = lpFcb = ExtFcbToFcb(lpExtFcb);
/* Build a traditional DOS file name */
if (FcbNameInit(lpFcb, pszBuffer, pCurDrive) < SUCCESS)
@ -477,7 +481,7 @@ UBYTE FcbDelete(xfcb FAR * lpXfcb)
void FAR *lpOldDta = dta;
/* Build a traditional DOS file name */
CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
fcb FAR *lpFcb = CommonFcbInit(lpXfcb, SecPathName, &FcbDrive);
/* check for a device */
if (lpFcb == NULL || IsDevice(SecPathName))
{
@ -598,7 +602,7 @@ UBYTE FcbClose(xfcb FAR * lpXfcb)
sft FAR *s;
/* Convert to fcb if necessary */
lpFcb = ExtFcbToFcb(lpXfcb);
fcb FAR *lpFcb = ExtFcbToFcb(lpXfcb);
/* An already closed FCB can be closed again without error */
if (lpFcb->fcb_sftno == (BYTE) 0xff)
@ -637,6 +641,7 @@ UBYTE FcbFindFirstNext(xfcb FAR * lpXfcb, BOOL First)
void FAR *orig_dta = dta;
BYTE FAR *lpDir;
COUNT FcbDrive;
fcb FAR *lpFcb;
/* First, move the dta to a local and change it around to match */
/* our functions. */

2
kernel/globals.h
View File

@ -321,7 +321,7 @@ extern iregs FAR * ASM user_r; /* User registers for int 21h call */
extern struct dirent /* Temporary directory entry */
ASM DirEntBuffer;
extern fcb FAR * ASM lpFcb; /* Pointer to users fcb */
extern fcb FAR * ASM sda_lpFcb; /* Pointer to users fcb */
extern sft FAR * ASM lpCurSft;

4
kernel/kernel.asm
View File

@ -553,8 +553,8 @@ current_device times 2 dw 0 ;27A - 0??
_lpCurSft times 2 dw 0 ;27e - Current SFT
global _current_ldt
_current_ldt times 2 dw 0 ;282 - Current CDS
global _lpFcb
_lpFcb times 2 dw 0 ;286 - pointer to callers FCB
global _sda_lpFcb
_sda_lpFcb times 2 dw 0 ;286 - pointer to callers FCB
global _current_sft_idx
_current_sft_idx dw 0 ;28A - SFT index for next open
; used by MS NET