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add skeleton for LFN API, includes 0x71a6 implementation (call to redirector only) from dosemu2/fdpp

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This commit is contained in:
Kenneth J Davis 2021-08-07 20:43:04 -04:00
parent cd4709f09b
commit d410370580
3 changed files with 153 additions and 9 deletions
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152
kernel/inthndlr.c
View File

@ -409,6 +409,7 @@ VOID ASMCFUNC int21_service(iregs FAR * r)
COUNT rc;
long lrc;
lregs lr; /* 8 local registers (ax, bx, cx, dx, si, di, ds, es) */
psp FAR *psp = MK_FP(cu_psp, 0);
#define FP_DS_DX (MK_FP(lr.DS, lr.DX))
#define FP_ES_DI (MK_FP(lr.ES, lr.DI))
@ -416,7 +417,7 @@ VOID ASMCFUNC int21_service(iregs FAR * r)
#define CLEAR_CARRY_FLAG() r->FLAGS &= ~FLG_CARRY
#define SET_CARRY_FLAG() r->FLAGS |= FLG_CARRY
((psp FAR *) MK_FP(cu_psp, 0))->ps_stack = (BYTE FAR *) r;
psp->ps_stack = (BYTE FAR *) r;
fmemcpy(&lr, r, sizeof(lregs) - 4);
lr.DS = r->DS;
@ -755,13 +756,11 @@ dispatch:
/* Get (editable) DOS Version */
case 0x30:
{
psp FAR *p = MK_FP(cu_psp, 0);
if (lr.AL == 1) /* from RBIL, if AL=1 then return version_flags */
lr.BH = version_flags;
else
lr.BH = OEM_ID;
lr.AX = p->ps_retdosver;
lr.AX = psp->ps_retdosver;
lr.BL = REVISION_SEQ;
lr.CX = 0; /* do not set this to a serial number!
32RTM won't like non-zero values */
@ -1070,8 +1069,7 @@ dispatch:
#if 0
if (cu_psp == lr.ES)
{
psp FAR *p = MK_FP(cu_psp, 0);
p->ps_size = lr.BX + cu_psp;
psp->ps_size = lr.BX + cu_psp;
}
#endif
if (DosMemCheck() != SUCCESS)
@ -1538,10 +1536,141 @@ dispatch:
/* case 0x6d and above not implemented : see default; return AL=0 */
#ifdef WITHFAT32
/* LFN functions - fail with "function not supported" error code */
/* LFN API */
case 0x71:
lr.AL = 00;
goto error_carry;
switch (lr.AL)
{
#ifdef WITHLFNAPI
/* Win95 LFN - reset drive */
case 0x0d:
/* Win95 LFN - make directory */
case 0x39:
/* Win95 LFN - remove directory */
case 0x3a:
/* Win95 LFN - change directory */
case 0x3b:
/* Win95 LFN - delete file */
case 0x41:
/* Win95 LFN - extended get/set file attributes */
case 0x43:
/* Win95 LFN - get current directory */
case 0x47:
/* Win95 LFN - find first file */
case 0x4e:
/* Win95 LFN - find next file */
case 0xa2: /* internal - same as 0x4f */
case 0x4f: {
goto unsupp;
}
/* Win95 LFN - rename file */
case 0x56:
/* Win95 LFN - canonicalize file name/path */
case 0x60: {
switch (lr->CL)
{
/* truename - canonicalize path, accepts short/long/or combination as input and may return combined short/long name */
case 0x00: {
}
/* get canonical short (8.3) name or path, truename that accepts long name and returns short name */
case 0x01: {
}
/* get canonical long name or path, truename that accepts short name and returns long name */
case 0x02: {
}
default:
goto unsupp;
}
}
/* Win95 LFN - create or open file */
case 0xa9: /* for real-mode servers only, AX is _global_ file handle on return */
case 0x6c: {
goto unsupp;
}
/* Win95 LFN - get volume information */
case 0xa0:
/* Win95 LFN - find file close */
case 0xa1: {
lfn_findclose:
goto unsupp;
}
#if 0
/* Win95 LFN - internal use ??? */
case 0xa3:
case 0xa4:
case 0xa5:
goto unsupp;
#endif
#endif
/* Win95 LFN - get file info by handle */
case 0x42: /* ??? */
case 0xa6: {
/* only passed to redirector supported for now */
iregs saved_r;
sft FAR *s;
unsigned char idx;
if (r->BX >= psp->ps_maxfiles)
{
rc = DE_INVLDHNDL;
goto error_exit;
}
idx = psp->ps_filetab[r->BX];
s = idx_to_sft(idx);
if (s == (sft FAR *)-1)
{
rc = DE_INVLDHNDL;
goto error_exit;
}
if (!(s->sft_flags & SFT_FSHARED))
goto unsupp; /* unsupported on local fs yet */
/* call to redirector */
saved_r = *r;
r->ES = FP_SEG(s);
r->DI = FP_OFF(s);
r->flags |= FLG_CARRY;
r->AH = 0x11;
call_intr(0x2f, r);
if (!(r->flags & FLG_CARRY)) {
r->ES = saved_r.ES;
r->DI = saved_r.DI;
goto real_exit;
}
/* carry still set - unhandled */
*r = saved_r;
goto unsupp;
break;
}
#ifdef WITHLFNAPI
/* Win95 LFN - Win95 64 UTC file time to/from DOS date and time (local timezone) */
case 0xa7: {
/* Note: valid input range limited to Jan 1, 1980 to Dec 31, 2107 */
switch (lr->BL)
{
/* from Win95 UTC to DOS date/time */
case 0x00: {
}
/* from DOS date/time to Win95 UTC */
case 0x01: {
}
default:
goto unsupp;
}
}
/* Win95 LFN - generate short filename */
case 0xa8:
/* Win95 LFN - subst */
case 0xaa: {
goto unsupp;
}
#endif
default:
goto unsupp;
}
break;
#ifdef WITHLFNAPI
/* Win95 beta LFN - find close */
case 0x72: goto lfn_findclose;
#endif
/* DOS 7.0+ FAT32 extended functions */
case 0x73:
@ -1591,6 +1720,11 @@ dispatch:
#endif
}
goto exit_dispatch;
unsupp:
{
lr.AL = 00;
goto error_carry;
}
long_check:
if (lrc >= SUCCESS)
{

9
kernel/intr.asm
View File

@ -96,6 +96,15 @@ arg nr, rp
segment HMA_TEXT
;
; void call_intr(nr, rp)
; REG int nr
; REG struct REGPACK *rp
;
global CALL_INTR
CALL_INTR:
INTR
;; COUNT ASMPASCAL res_DosExec(COUNT mode, exec_blk * ep, BYTE * lp)
global RES_DOSEXEC
RES_DOSEXEC:

1
kernel/proto.h
View File

@ -218,6 +218,7 @@ void FcbCloseAll(void);
UBYTE FcbFindFirstNext(xfcb FAR * lpXfcb, BOOL First);
/* intr.asm */
UWORD ASMPASCAL call_intr(WORD nr, iregs FAR * rp);
COUNT ASMPASCAL res_DosExec(COUNT mode, exec_blk * ep, BYTE * lp);
UCOUNT ASMPASCAL res_read(int fd, void *buf, UCOUNT count);
#ifdef __WATCOMC__