2 * DOS interrupt 21h handler
14 #include <sys/types.h>
30 #if defined(__svr4__) || defined(_SCO_DS)
31 /* SVR4 DOESNT do locking the same way must implement properly */
38 #define DOS_GET_DRIVE(reg) ((reg) ? (reg) - 1 : DRIVE_GetCurrentDrive())
40 /* Define the drive parameter block, as used by int21/1F
41 * and int21/32. This table can be accessed through the
42 * global 'dpb' pointer, which points into the local dos
47 BYTE drive_num; /* 0=A, etc. */
48 BYTE unit_num; /* Drive's unit number (?) */
49 WORD sector_size; /* Sector size in bytes */
50 BYTE high_sector; /* Highest sector in a cluster */
51 BYTE shift; /* Shift count (?) */
52 WORD reserved; /* Number of reserved sectors at start */
53 BYTE num_FAT; /* Number of FATs */
54 WORD dir_entries; /* Number of root dir entries */
55 WORD first_data; /* First data sector */
56 WORD high_cluster; /* Highest cluster number */
57 WORD sectors_in_FAT; /* Number of sectors per FAT */
58 WORD start_dir; /* Starting sector of first dir */
59 DWORD driver_head; /* Address of device driver header (?) */
60 BYTE media_ID; /* Media ID */
61 BYTE access_flag; /* Prev. accessed flag (0=yes,0xFF=no) */
62 DWORD next; /* Pointer to next DPB in list */
63 WORD free_search; /* Free cluster search start */
64 WORD free_clusters; /* Number of free clusters (0xFFFF=unknown) */
76 static struct DosHeap *heap;
77 static WORD DosHeapHandle;
79 WORD sharing_retries = 3; /* number of retries at sharing violation */
80 WORD sharing_pause = 1; /* pause between retries */
82 extern char TempDirectory[];
84 static BOOL32 INT21_CreateHeap(void)
86 if (!(DosHeapHandle = GlobalAlloc16(GMEM_FIXED,sizeof(struct DosHeap))))
88 fprintf( stderr, "INT21_Init: Out of memory\n");
91 heap = (struct DosHeap *) GlobalLock16(DosHeapHandle);
92 dpbsegptr = PTR_SEG_OFF_TO_SEGPTR(DosHeapHandle,(int)&heap->dpb-(int)heap);
94 strcpy(heap->biosdate, "01/01/80");
98 BYTE *GetCurrentDTA(void)
100 TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
101 return (BYTE *)PTR_SEG_TO_LIN( pTask->dta );
105 void ChopOffWhiteSpace(char *string)
109 for (length = strlen(string) ; length ; length--)
110 if (string[length] == ' ')
111 string[length] = '\0';
114 void CreateBPB(int drive, BYTE *data)
119 setword(&data[3], 0);
121 setword(&data[6], 240);
122 setword(&data[8], 64000);
124 setword(&data[0x0b], 40);
125 setword(&data[0x0d], 56);
126 setword(&data[0x0f], 2);
127 setword(&data[0x11], 0);
128 setword(&data[0x1f], 800);
130 setword(&data[0x22], 1);
131 } else { /* 1.44mb */
134 setword(&data[3], 0);
136 setword(&data[6], 240);
137 setword(&data[8], 2880);
139 setword(&data[0x0b], 6);
140 setword(&data[0x0d], 18);
141 setword(&data[0x0f], 2);
142 setword(&data[0x11], 0);
143 setword(&data[0x1f], 80);
145 setword(&data[0x22], 2);
149 static int INT21_GetFreeDiskSpace( CONTEXT *context )
151 DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters;
152 char root[] = "A:\\";
154 *root += DOS_GET_DRIVE( DL_reg(context) );
155 if (!GetDiskFreeSpace32A( root, &cluster_sectors, §or_bytes,
156 &free_clusters, &total_clusters )) return 0;
157 AX_reg(context) = cluster_sectors;
158 BX_reg(context) = free_clusters;
159 CX_reg(context) = sector_bytes;
160 DX_reg(context) = total_clusters;
164 static int INT21_GetDriveAllocInfo( CONTEXT *context )
166 if (!INT21_GetFreeDiskSpace( context )) return 0;
167 if (!heap && !INT21_CreateHeap()) return 0;
168 heap->mediaID = 0xf0;
169 DS_reg(context) = DosHeapHandle;
170 BX_reg(context) = (int)&heap->mediaID - (int)heap;
174 static void GetDrivePB( CONTEXT *context, int drive )
176 if(!DRIVE_IsValid(drive))
178 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
179 AX_reg(context) = 0x00ff;
181 else if (heap || INT21_CreateHeap())
183 dprintf_int(stddeb, "int21: GetDrivePB not fully implemented.\n");
185 /* FIXME: I have no idea what a lot of this information should
186 * say or whether it even really matters since we're not allowing
187 * direct block access. However, some programs seem to depend on
188 * getting at least _something_ back from here. The 'next' pointer
189 * does worry me, though. Should we have a complete table of
190 * separate DPBs per drive? Probably, but I'm lazy. :-) -CH
192 heap->dpb.drive_num = heap->dpb.unit_num = drive; /*The same?*/
193 heap->dpb.sector_size = 512;
194 heap->dpb.high_sector = 1;
195 heap->dpb.shift = drive < 2 ? 0 : 6; /*6 for HD, 0 for floppy*/
196 heap->dpb.reserved = 0;
197 heap->dpb.num_FAT = 1;
198 heap->dpb.dir_entries = 2;
199 heap->dpb.first_data = 2;
200 heap->dpb.high_cluster = 64000;
201 heap->dpb.sectors_in_FAT = 1;
202 heap->dpb.start_dir = 1;
203 heap->dpb.driver_head = 0;
204 heap->dpb.media_ID = (drive > 1) ? 0xF8 : 0xF0;
205 heap->dpb.access_flag = 0;
207 heap->dpb.free_search = 0;
208 heap->dpb.free_clusters = 0xFFFF; /* unknown */
210 AL_reg(context) = 0x00;
211 DS_reg(context) = SELECTOROF(dpbsegptr);
212 BX_reg(context) = OFFSETOF(dpbsegptr);
217 static void ioctlGetDeviceInfo( CONTEXT *context )
219 dprintf_int (stddeb, "int21: ioctl (%d, GetDeviceInfo)\n", BX_reg(context));
221 DX_reg(context) = 0x0942;
222 /* bits 0-5 are current drive
223 * bit 6 - file has NOT been written..FIXME: correct?
224 * bit 8 - generate int24 if no diskspace on write/ read past end of file
225 * bit 11 - media not removable
227 RESET_CFLAG(context);
230 static void ioctlGenericBlkDevReq( CONTEXT *context )
232 BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
233 int drive = DOS_GET_DRIVE( BL_reg(context) );
235 if (!DRIVE_IsValid(drive))
237 DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
238 AX_reg(context) = DOS_ExtendedError;
243 if (CH_reg(context) != 0x08)
245 INT_BARF( context, 0x21 );
248 switch (CL_reg(context)) {
249 case 0x4a: /* lock logical volume */
250 dprintf_int(stddeb,"int21: lock logical volume (%d) level %d mode %d\n",drive,BH_reg(context),DX_reg(context));
252 case 0x60: /* get device parameters */
253 /* used by w4wgrp's winfile */
254 memset(dataptr, 0, 0x26);
256 dataptr[6] = 0; /* media type */
259 dataptr[1] = 0x05; /* fixed disk */
260 setword(&dataptr[2], 0x01); /* non removable */
261 setword(&dataptr[4], 0x300); /* # of cylinders */
265 dataptr[1] = 0x07; /* block dev, floppy */
266 setword(&dataptr[2], 0x02); /* removable */
267 setword(&dataptr[4], 80); /* # of cylinders */
269 CreateBPB(drive, &dataptr[7]);
270 RESET_CFLAG(context);
272 case 0x66:/* get disk serial number */
273 { char label[12],fsname[9],path[4];
276 strcpy(path,"x:\\");path[0]=drive+'A';
277 GetVolumeInformation32A(
278 path,label,12,&serial,NULL,NULL,fsname,9
281 memcpy(dataptr+2,&serial,4);
282 memcpy(dataptr+6,label ,11);
283 memcpy(dataptr+17,fsname,8);
287 dprintf_int(stddeb,"int21: logical volume %d unlocked.\n",drive);
290 INT_BARF( context, 0x21 );
294 static void INT21_GetSystemDate( CONTEXT *context )
297 GetLocalTime( &systime );
298 CX_reg(context) = systime.wYear;
299 DX_reg(context) = (systime.wMonth << 8) | systime.wDay;
300 AX_reg(context) = systime.wDayOfWeek;
303 static void INT21_GetSystemTime( CONTEXT *context )
306 GetLocalTime( &systime );
307 CX_reg(context) = (systime.wHour << 8) | systime.wMinute;
308 DX_reg(context) = (systime.wSecond << 8) | (systime.wMilliseconds / 10);
311 static void INT21_CreateFile( CONTEXT *context )
313 AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
314 DX_reg(context) ), CX_reg(context) );
315 if (AX_reg(context) == (WORD)HFILE_ERROR16)
317 AX_reg(context) = DOS_ExtendedError;
323 void OpenExistingFile( CONTEXT *context )
325 AX_reg(context) = _lopen16( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
327 if (AX_reg(context) == (WORD)HFILE_ERROR16)
329 AX_reg(context) = DOS_ExtendedError;
337 switch (AX_reg(context) & 0x0070)
339 case 0x00: /* compatability mode */
340 case 0x40: /* DENYNONE */
344 case 0x30: /* DENYREAD */
346 "OpenExistingFile (%s): DENYREAD changed to DENYALL\n",
347 (char *)PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)));
348 case 0x10: /* DENYALL */
352 case 0x20: /* DENYWRITE */
363 int result,retries=sharing_retries;
365 #if defined(__svr4__) || defined(_SCO_DS)
366 printf("Should call flock and needs porting to lockf\n");
370 result = flock(handle, lock | LOCK_NB);
372 if ( retries && (!result) )
375 for(i=0;i<32768*((int)sharing_pause);i++)
376 result++; /* stop the optimizer */
377 for(i=0;i<32768*((int)sharing_pause);i++)
381 while( (!result) && (!(retries--)) );
386 AX_reg(context) = ExtendedError;
395 AX_reg(context) = handle;
396 RESET_CFLAG(context);
400 static void CloseFile( CONTEXT *context )
402 if ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0)
404 AX_reg(context) = DOS_ExtendedError;
409 void ExtendedOpenCreateFile(CONTEXT *context )
411 BYTE action=DL_reg(context);
412 /* Shuffle arguments to call OpenExistingFile */
413 AL_reg(context) = BL_reg(context);
414 DX_reg(context) = SI_reg(context);
415 /* BX,CX and DX should be preserved */
416 OpenExistingFile(context);
417 if ((EFL_reg(context) & 0x0001)==0)
419 /* Now decide what do do */
420 if ((action & 0x07)== 0)
422 BX_reg(context) = AX_reg(context);
424 AX_reg(context) = 0x0050;/*File exists*/
427 dprintf_int(stddeb, "int21: extended open/create: failed because file exixts \n");
430 if ((action & 0x07)== 2) {
431 /* Truncate it, but first check if opend for write */
432 if ((BL_reg(context) & 0x0007)== 0) {
433 BX_reg(context) = AX_reg(context);
435 dprintf_int(stddeb, "int21: extended open/create: failed, trunc on ro file");
436 AX_reg(context) = 0x000C;/*Access code invalid*/
441 /* Shuffle arguments to call CloseFile */
442 dprintf_int(stddeb, "int21: extended open/create: Closing before truncate\n");
443 BX_reg(context) = AX_reg(context);
444 /* BX and DX should be preserved */
446 if (EFL_reg(context) & 0x0001) {
447 dprintf_int(stddeb, "int21: extended open/create: close before trunc failed");
448 AX_reg(context) = 0x0019;/*Seek Error*/
452 /* Shuffle arguments to call CreateFile */
453 dprintf_int(stddeb, "int21: extended open/create: Truncating\n");
454 AL_reg(context) = BL_reg(context);
455 /* CX is still the same */
456 DX_reg(context) = SI_reg(context);
457 INT21_CreateFile(context);
458 if (EFL_reg(context) & 0x0001) { /*no file open, flags set */
459 dprintf_int(stddeb, "int21: extended open/create: truncfailed");
468 else /* file does not exist */
470 RESET_CFLAG(context); /* was set by OpenExistingFile(context) */
471 if ((action & 0xF0)== 0)
475 dprintf_int(stddeb, "int21: extended open/create: failed, file dosen't exist\n");
478 /* Shuffle arguments to call CreateFile */
479 dprintf_int(stddeb, "int21: extended open/create: Creating\n");
480 AL_reg(context) = BL_reg(context);
481 /* CX should still be the same */
482 DX_reg(context) = SI_reg(context);
483 INT21_CreateFile(context);
484 if (EFL_reg(context) & 0x0001) { /*no file open, flags set */
485 dprintf_int(stddeb, "int21: extended open/create: create failed\n");
494 static void INT21_ChangeDir( CONTEXT *context )
497 char *dirname = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
499 dprintf_int(stddeb,"int21: changedir %s\n", dirname);
500 if (dirname[0] && (dirname[1] == ':'))
502 drive = toupper(dirname[0]) - 'A';
505 else drive = DRIVE_GetCurrentDrive();
506 if (!DRIVE_Chdir( drive, dirname ))
508 AX_reg(context) = DOS_ExtendedError;
514 static int INT21_FindFirst( CONTEXT *context )
518 DOS_FULL_NAME full_name;
519 FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
521 path = (const char *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
522 dta->unixPath = NULL;
523 if (!DOSFS_GetFullName( path, FALSE, &full_name ))
525 AX_reg(context) = DOS_ExtendedError;
529 dta->unixPath = xstrdup( full_name.long_name );
530 p = strrchr( dta->unixPath, '/' );
533 /* Note: terminating NULL in dta->mask overwrites dta->search_attr
534 * (doesn't matter as it is set below anyway)
536 if (!DOSFS_ToDosFCBFormat( p + 1, dta->mask ))
538 free( dta->unixPath );
539 dta->unixPath = NULL;
540 DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
541 AX_reg(context) = ER_FileNotFound;
545 dta->drive = (path[0] && (path[1] == ':')) ? toupper(path[0]) - 'A'
546 : DRIVE_GetCurrentDrive();
548 dta->search_attr = CL_reg(context);
553 static int INT21_FindNext( CONTEXT *context )
555 FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
556 WIN32_FIND_DATA32A entry;
559 if (!dta->unixPath) return 0;
560 if (!(count = DOSFS_FindNext( dta->unixPath, dta->mask, NULL, dta->drive,
561 dta->search_attr, dta->count, &entry )))
563 free( dta->unixPath );
564 dta->unixPath = NULL;
567 if ((int)dta->count + count > 0xffff)
569 fprintf( stderr, "Too many directory entries in %s\n", dta->unixPath );
570 free( dta->unixPath );
571 dta->unixPath = NULL;
575 dta->fileattr = entry.dwFileAttributes;
576 dta->filesize = entry.nFileSizeLow;
577 FileTimeToDosDateTime( &entry.ftLastWriteTime,
578 &dta->filedate, &dta->filetime );
579 strcpy( dta->filename, entry.cAlternateFileName );
584 static int INT21_CreateTempFile( CONTEXT *context )
586 static int counter = 0;
587 char *name = PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) );
588 char *p = name + strlen(name);
592 sprintf( p, "wine%04x.%03d", (int)getpid(), counter );
593 counter = (counter + 1) % 1000;
595 if ((AX_reg(context) = _lcreat_uniq( name, 0 )) != (WORD)HFILE_ERROR16)
597 dprintf_int( stddeb, "INT21_CreateTempFile: created %s\n", name );
600 if (DOS_ExtendedError != ER_FileExists) return 0;
605 static int INT21_GetCurrentDirectory( CONTEXT *context )
607 int drive = DOS_GET_DRIVE( DL_reg(context) );
608 char *ptr = (char *)PTR_SEG_OFF_TO_LIN( DS_reg(context), SI_reg(context) );
610 if (!DRIVE_IsValid(drive))
612 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
616 lstrcpyn32A( ptr, DRIVE_GetDosCwd(drive), 64 );
621 static int INT21_GetDiskSerialNumber( CONTEXT *context )
623 BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
624 int drive = DOS_GET_DRIVE( BL_reg(context) );
626 if (!DRIVE_IsValid(drive))
628 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
632 *(WORD *)dataptr = 0;
633 *(DWORD *)(dataptr + 2) = DRIVE_GetSerialNumber( drive );
634 memcpy( dataptr + 6, DRIVE_GetLabel( drive ), 11 );
635 strncpy(dataptr + 0x11, "FAT16 ", 8);
640 static int INT21_SetDiskSerialNumber( CONTEXT *context )
642 BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
643 int drive = DOS_GET_DRIVE( BL_reg(context) );
645 if (!DRIVE_IsValid(drive))
647 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
651 DRIVE_SetSerialNumber( drive, *(DWORD *)(dataptr + 2) );
656 /* microsoft's programmers should be shot for using CP/M style int21
657 calls in Windows for Workgroup's winfile.exe */
659 static int INT21_FindFirstFCB( CONTEXT *context )
661 BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
666 if (*fcb == 0xff) pFCB = (FINDFILE_FCB *)(fcb + 7);
667 else pFCB = (FINDFILE_FCB *)fcb;
668 drive = DOS_GET_DRIVE( pFCB->drive );
669 root = DRIVE_GetRoot( drive );
670 cwd = DRIVE_GetUnixCwd( drive );
671 pFCB->unixPath = HeapAlloc( SystemHeap, 0, strlen(root)+strlen(cwd)+2 );
672 if (!pFCB->unixPath) return 0;
673 strcpy( pFCB->unixPath, root );
674 strcat( pFCB->unixPath, "/" );
675 strcat( pFCB->unixPath, cwd );
681 static int INT21_FindNextFCB( CONTEXT *context )
683 BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
685 DOS_DIRENTRY_LAYOUT *pResult = (DOS_DIRENTRY_LAYOUT *)GetCurrentDTA();
686 WIN32_FIND_DATA32A entry;
693 pFCB = (FINDFILE_FCB *)(fcb + 7);
698 pFCB = (FINDFILE_FCB *)fcb;
701 if (!pFCB->unixPath) return 0;
702 if (!(count = DOSFS_FindNext( pFCB->unixPath, pFCB->filename, NULL,
703 DOS_GET_DRIVE( pFCB->drive ), attr,
704 pFCB->count, &entry )))
706 HeapFree( SystemHeap, 0, pFCB->unixPath );
707 pFCB->unixPath = NULL;
710 pFCB->count += count;
712 pResult->fileattr = entry.dwFileAttributes;
713 pResult->cluster = 0; /* what else? */
714 pResult->filesize = entry.nFileSizeLow;
715 memset( pResult->reserved, 0, sizeof(pResult->reserved) );
716 FileTimeToDosDateTime( &entry.ftLastWriteTime,
717 &pResult->filedate, &pResult->filetime );
719 /* Convert file name to FCB format */
721 memset( pResult->filename, ' ', sizeof(pResult->filename) );
722 if (!strcmp( entry.cAlternateFileName, "." )) pResult->filename[0] = '.';
723 else if (!strcmp( entry.cAlternateFileName, ".." ))
724 pResult->filename[0] = pResult->filename[1] = '.';
727 char *p = strrchr( entry.cAlternateFileName, '.' );
728 if (p && p[1] && (p != entry.cAlternateFileName))
730 memcpy( pResult->filename, entry.cAlternateFileName,
731 MIN( (p - entry.cAlternateFileName), 8 ) );
732 memcpy( pResult->filename + 8, p + 1, MIN( strlen(p), 3 ) );
735 memcpy( pResult->filename, entry.cAlternateFileName,
736 MIN( strlen(entry.cAlternateFileName), 8 ) );
742 static void DeleteFileFCB( CONTEXT *context )
744 fprintf( stderr, "DeleteFileFCB: not implemented yet\n" );
746 BYTE *fcb = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
747 struct dosdirent *dp;
748 char temp[256], *ptr;
749 int drive = DOS_GET_DRIVE( *fcb );
754 strcpy(temp+1, DRIVE_GetDosCwd(drive));
756 strncat(temp, fcb + 1, 8);
757 ChopOffWhiteSpace(temp);
758 strncat(temp, fcb + 9, 3);
759 ChopOffWhiteSpace(temp);
761 if ((dp = DOS_opendir(temp)) == NULL) {
762 Error(InvalidDrive, EC_MediaError , EL_Disk);
763 AX_reg(context) = 0xff;
768 strcpy(temp+1, DRIVE_GetDosCwd(drive) );
771 ptr = temp + strlen(temp);
773 while (DOS_readdir(dp) != NULL)
775 strcpy(ptr, dp->filename);
776 dprintf_int(stddeb, "int21: delete file %s\n", temp);
777 /* unlink(DOS_GetUnixFileName(temp)); */
784 static void RenameFileFCB( CONTEXT *context )
786 fprintf( stderr, "RenameFileFCB: not implemented yet\n" );
788 BYTE *fcb = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
789 struct dosdirent *dp;
790 char temp[256], oldname[256], newname[256], *oldnameptr, *newnameptr;
791 int drive = DOS_GET_DRIVE( *fcb );
796 strcpy(temp+1, DRIVE_GetDosCwd(drive) );
798 strncat(temp, fcb + 1, 8);
799 ChopOffWhiteSpace(temp);
800 strncat(temp, fcb + 9, 3);
801 ChopOffWhiteSpace(temp);
803 if ((dp = DOS_opendir(temp)) == NULL) {
804 Error(InvalidDrive, EC_MediaError , EL_Disk);
805 AX_reg(context) = 0xff;
810 strcpy(oldname+1, DRIVE_GetDosCwd(drive) );
811 strcat(oldname, "\\");
812 strcpy( newname, oldname );
813 oldnameptr = oldname + strlen(oldname);
814 newnameptr = newname + strlen(newname);
816 while (DOS_readdir(dp) != NULL)
818 strcpy(oldnameptr, dp->filename);
819 strcpy(newnameptr, fcb + 1);
820 dprintf_int(stddeb, "int21: renamefile %s -> %s\n",
830 static void fLock( CONTEXT * context )
834 int result,retries=sharing_retries;
836 f.l_start = MAKELONG(DX_reg(context),CX_reg(context));
837 f.l_len = MAKELONG(DI_reg(context),SI_reg(context));
841 switch ( AX_reg(context) & 0xff )
843 case 0x00: /* LOCK */
847 case 0x01: /* UNLOCK */
852 AX_reg(context) = 0x0001;
858 result = fcntl(BX_reg(context),F_SETLK,&f);
859 if ( retries && (!result) )
862 for(i=0;i<32768*((int)sharing_pause);i++)
863 result++; /* stop the optimizer */
864 for(i=0;i<32768*((int)sharing_pause);i++)
868 while( (!result) && (!(retries--)) );
873 AX_reg(context) = DOS_ExtendedError;
881 extern void LOCAL_PrintHeap (WORD ds);
883 /***********************************************************************
884 * DOS3Call (KERNEL.102)
886 void DOS3Call( CONTEXT *context )
888 dprintf_int( stddeb, "int21: AX=%04x BX=%04x CX=%04x DX=%04x "
889 "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
890 AX_reg(context), BX_reg(context), CX_reg(context),
891 DX_reg(context), SI_reg(context), DI_reg(context),
892 (WORD)DS_reg(context), (WORD)ES_reg(context),
895 if (AH_reg(context) == 0x59) /* Get extended error info */
897 AX_reg(context) = DOS_ExtendedError;
898 BH_reg(context) = DOS_ErrorClass;
899 BL_reg(context) = DOS_ErrorAction;
900 CH_reg(context) = DOS_ErrorLocus;
904 DOS_ERROR( 0, 0, 0, 0 );
905 RESET_CFLAG(context); /* Not sure if this is a good idea */
907 switch(AH_reg(context))
909 case 0x00: /* TERMINATE PROGRAM */
910 TASK_KillCurrentTask( 0 );
913 case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */
914 case 0x02: /* WRITE CHARACTER TO STANDARD OUTPUT */
915 case 0x03: /* READ CHARACTER FROM STDAUX */
916 case 0x04: /* WRITE CHARACTER TO STDAUX */
917 case 0x05: /* WRITE CHARACTER TO PRINTER */
918 case 0x06: /* DIRECT CONSOLE IN/OUTPUT */
919 case 0x07: /* DIRECT CHARACTER INPUT, WITHOUT ECHO */
920 case 0x08: /* CHARACTER INPUT WITHOUT ECHO */
921 case 0x09: /* WRITE STRING TO STANDARD OUTPUT */
922 case 0x0a: /* BUFFERED INPUT */
923 case 0x0b: /* GET STDIN STATUS */
924 case 0x0c: /* FLUSH BUFFER AND READ STANDARD INPUT */
925 case 0x0f: /* OPEN FILE USING FCB */
926 case 0x10: /* CLOSE FILE USING FCB */
927 case 0x14: /* SEQUENTIAL READ FROM FCB FILE */
928 case 0x15: /* SEQUENTIAL WRITE TO FCB FILE */
929 case 0x16: /* CREATE OR TRUNCATE FILE USING FCB */
930 case 0x21: /* READ RANDOM RECORD FROM FCB FILE */
931 case 0x22: /* WRITE RANDOM RECORD TO FCB FILE */
932 case 0x23: /* GET FILE SIZE FOR FCB */
933 case 0x24: /* SET RANDOM RECORD NUMBER FOR FCB */
934 case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */
935 case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */
936 case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */
937 case 0x29: /* PARSE FILENAME INTO FCB */
938 case 0x2e: /* SET VERIFY FLAG */
939 case 0x37: /* "SWITCHAR" - GET SWITCH CHARACTER
940 "SWITCHAR" - SET SWITCH CHARACTER
941 "AVAILDEV" - SPECIFY \DEV\ PREFIX USE */
942 case 0x54: /* GET VERIFY FLAG */
943 INT_BARF( context, 0x21 );
946 case 0x18: /* NULL FUNCTIONS FOR CP/M COMPATIBILITY */
950 case 0x6b: /* NULL FUNCTION */
954 case 0x5c: /* "FLOCK" - RECORD LOCKING */
958 case 0x0d: /* DISK BUFFER FLUSH */
959 RESET_CFLAG(context); /* dos 6+ only */
962 case 0x0e: /* SELECT DEFAULT DRIVE */
963 DRIVE_SetCurrentDrive( DL_reg(context) );
964 AL_reg(context) = MAX_DOS_DRIVES;
967 case 0x11: /* FIND FIRST MATCHING FILE USING FCB */
968 if (!INT21_FindFirstFCB(context))
970 AL_reg(context) = 0xff;
973 /* else fall through */
975 case 0x12: /* FIND NEXT MATCHING FILE USING FCB */
976 AL_reg(context) = INT21_FindNextFCB(context) ? 0x00 : 0xff;
979 case 0x13: /* DELETE FILE USING FCB */
980 DeleteFileFCB(context);
983 case 0x17: /* RENAME FILE USING FCB */
984 RenameFileFCB(context);
987 case 0x19: /* GET CURRENT DEFAULT DRIVE */
988 AL_reg(context) = DRIVE_GetCurrentDrive();
991 case 0x1a: /* SET DISK TRANSFER AREA ADDRESS */
993 TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
994 pTask->dta = PTR_SEG_OFF_TO_SEGPTR(DS_reg(context),DX_reg(context));
995 dprintf_int(stddeb, "int21: Set DTA: %08lx\n", pTask->dta);
999 case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */
1000 DL_reg(context) = 0;
1001 if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
1004 case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */
1005 if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
1008 case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */
1009 GetDrivePB(context, DRIVE_GetCurrentDrive());
1012 case 0x25: /* SET INTERRUPT VECTOR */
1013 INT_SetHandler( AL_reg(context),
1014 (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
1018 case 0x2a: /* GET SYSTEM DATE */
1019 INT21_GetSystemDate(context);
1022 case 0x2b: /* SET SYSTEM DATE */
1023 fprintf( stdnimp, "SetSystemDate(%02d/%02d/%04d): not allowed\n",
1024 DL_reg(context), DH_reg(context), CX_reg(context) );
1025 AL_reg(context) = 0; /* Let's pretend we succeeded */
1028 case 0x2c: /* GET SYSTEM TIME */
1029 INT21_GetSystemTime(context);
1032 case 0x2d: /* SET SYSTEM TIME */
1033 fprintf( stdnimp, "SetSystemTime(%02d:%02d:%02d.%02d): not allowed\n",
1034 CH_reg(context), CL_reg(context),
1035 DH_reg(context), DL_reg(context) );
1036 AL_reg(context) = 0; /* Let's pretend we succeeded */
1039 case 0x2f: /* GET DISK TRANSFER AREA ADDRESS */
1041 TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
1042 ES_reg(context) = SELECTOROF( pTask->dta );
1043 BX_reg(context) = OFFSETOF( pTask->dta );
1047 case 0x30: /* GET DOS VERSION */
1048 AX_reg(context) = DOSVERSION;
1049 BX_reg(context) = 0x0012; /* 0x123456 is Wine's serial # */
1050 CX_reg(context) = 0x3456;
1053 case 0x31: /* TERMINATE AND STAY RESIDENT */
1054 INT_BARF( context, 0x21 );
1057 case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */
1058 GetDrivePB(context, DOS_GET_DRIVE( DL_reg(context) ) );
1061 case 0x33: /* MULTIPLEXED */
1062 switch (AL_reg(context))
1064 case 0x00: /* GET CURRENT EXTENDED BREAK STATE */
1065 DL_reg(context) = 0;
1068 case 0x01: /* SET EXTENDED BREAK STATE */
1071 case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/
1072 DL_reg(context) = 0;
1075 case 0x05: /* GET BOOT DRIVE */
1076 DL_reg(context) = 2;
1077 /* c: is Wine's bootdrive */
1080 case 0x06: /* GET TRUE VERSION NUMBER */
1081 BX_reg(context) = DOSVERSION;
1082 DX_reg(context) = 0x00;
1086 INT_BARF( context, 0x21 );
1091 case 0x34: /* GET ADDRESS OF INDOS FLAG */
1092 if (!heap) INT21_CreateHeap();
1093 ES_reg(context) = DosHeapHandle;
1094 BX_reg(context) = (int)&heap->InDosFlag - (int)heap;
1097 case 0x35: /* GET INTERRUPT VECTOR */
1099 FARPROC16 addr = INT_GetHandler( AL_reg(context) );
1100 ES_reg(context) = SELECTOROF(addr);
1101 BX_reg(context) = OFFSETOF(addr);
1105 case 0x36: /* GET FREE DISK SPACE */
1106 if (!INT21_GetFreeDiskSpace(context)) AX_reg(context) = 0xffff;
1109 case 0x38: /* GET COUNTRY-SPECIFIC INFORMATION */
1110 AX_reg(context) = 0x02; /* no country support available */
1114 case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */
1115 if (!CreateDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1116 DX_reg(context) ), NULL))
1118 AX_reg(context) = DOS_ExtendedError;
1123 case 0x3a: /* "RMDIR" - REMOVE SUBDIRECTORY */
1124 if (!RemoveDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1127 AX_reg(context) = DOS_ExtendedError;
1132 case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */
1133 INT21_ChangeDir(context);
1136 case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */
1137 AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1138 DX_reg(context) ), CX_reg(context) );
1139 if (AX_reg(context) == (WORD)HFILE_ERROR16)
1141 AX_reg(context) = DOS_ExtendedError;
1146 case 0x3d: /* "OPEN" - OPEN EXISTING FILE */
1147 OpenExistingFile(context);
1150 case 0x3e: /* "CLOSE" - CLOSE FILE */
1151 if ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0)
1153 AX_reg(context) = DOS_ExtendedError;
1158 case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */
1160 LONG result = WIN16_hread( BX_reg(context),
1161 PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
1166 AX_reg(context) = DOS_ExtendedError;
1169 else AX_reg(context) = (WORD)result;
1173 case 0x40: /* "WRITE" - WRITE TO FILE OR DEVICE */
1175 LONG result = _hwrite16( BX_reg(context),
1176 PTR_SEG_OFF_TO_LIN( DS_reg(context),
1181 AX_reg(context) = DOS_ExtendedError;
1184 else AX_reg(context) = (WORD)result;
1188 case 0x41: /* "UNLINK" - DELETE FILE */
1189 if (!DeleteFile32A( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1192 AX_reg(context) = DOS_ExtendedError;
1197 case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */
1199 LONG status = _llseek16( BX_reg(context),
1200 MAKELONG(DX_reg(context),CX_reg(context)),
1204 AX_reg(context) = DOS_ExtendedError;
1208 AX_reg(context) = LOWORD(status);
1209 DX_reg(context) = HIWORD(status);
1213 case 0x43: /* FILE ATTRIBUTES */
1214 switch (AL_reg(context))
1217 AX_reg(context) = (WORD)GetFileAttributes32A(
1218 PTR_SEG_OFF_TO_LIN(DS_reg(context),
1220 if (AX_reg(context) == 0xffff)
1222 AX_reg(context) = DOS_ExtendedError;
1225 else CX_reg(context) = AX_reg(context);
1228 if (!SetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1232 AX_reg(context) = DOS_ExtendedError;
1239 case 0x44: /* IOCTL */
1240 switch (AL_reg(context))
1243 ioctlGetDeviceInfo(context);
1248 case 0x05:{ /* IOCTL - WRITE TO BLOCK DEVICE CONTROL CHANNEL */
1249 BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
1251 int drive = DOS_GET_DRIVE(BL_reg(context));
1253 fprintf(stdnimp,"int21: program tried to write to block device control channel of drive %d:\n",drive);
1254 for (i=0;i<CX_reg(context);i++)
1255 fprintf(stdnimp,"%02x ",dataptr[i]);
1256 fprintf(stdnimp,"\n");
1257 AX_reg(context)=CX_reg(context);
1260 case 0x08: /* Check if drive is removable. */
1261 switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1263 case DRIVE_CANNOTDETERMINE:
1264 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1265 AX_reg(context) = ER_InvalidDrive;
1268 case DRIVE_REMOVABLE:
1269 AX_reg(context) = 0; /* removable */
1272 AX_reg(context) = 1; /* not removable */
1277 case 0x09: /* CHECK IF BLOCK DEVICE REMOTE */
1278 switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1280 case DRIVE_CANNOTDETERMINE:
1281 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1282 AX_reg(context) = ER_InvalidDrive;
1286 DX_reg(context) = (1<<9) | (1<<12); /* remote */
1289 DX_reg(context) = 0; /* FIXME: use driver attr here */
1294 case 0x0a: /* check if handle (BX) is remote */
1295 /* returns DX, bit 15 set if remote, bit 14 set if date/time
1298 DX_reg(context) = 0;
1301 case 0x0b: /* SET SHARING RETRY COUNT */
1302 if (!CX_reg(context))
1304 AX_reg(context) = 1;
1308 sharing_pause = CX_reg(context);
1309 if (!DX_reg(context))
1310 sharing_retries = DX_reg(context);
1311 RESET_CFLAG(context);
1315 ioctlGenericBlkDevReq(context);
1317 case 0x0e: /* get logical drive mapping */
1318 AL_reg(context) = 0; /* drive has no mapping */
1321 case 0x0F: /* Set logical drive mapping */
1322 /* FIXME: Not implemented at the moment, always returns error
1324 INT_BARF( context, 0x21 );
1325 AX_reg(context) = 0x0001; /* invalid function */
1330 INT_BARF( context, 0x21 );
1335 case 0x45: /* "DUP" - DUPLICATE FILE HANDLE */
1336 if ((AX_reg(context) = FILE_Dup(BX_reg(context))) == (WORD)HFILE_ERROR16)
1338 AX_reg(context) = DOS_ExtendedError;
1343 case 0x46: /* "DUP2", "FORCEDUP" - FORCE DUPLICATE FILE HANDLE */
1344 if (FILE_Dup2( BX_reg(context), CX_reg(context) ) == HFILE_ERROR32)
1346 AX_reg(context) = DOS_ExtendedError;
1351 case 0x47: /* "CWD" - GET CURRENT DIRECTORY */
1352 if (!INT21_GetCurrentDirectory(context))
1354 AX_reg(context) = DOS_ExtendedError;
1357 else AX_reg(context) = 0x0100;
1358 /* intlist: many Microsoft products for Windows rely on this */
1361 case 0x48: /* ALLOCATE MEMORY */
1362 case 0x49: /* FREE MEMORY */
1363 case 0x4a: /* RESIZE MEMORY BLOCK */
1364 INT_BARF( context, 0x21 );
1367 case 0x4b: /* "EXEC" - LOAD AND/OR EXECUTE PROGRAM */
1368 AX_reg(context) = WinExec16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1371 if (AX_reg(context) < 32) SET_CFLAG(context);
1374 case 0x4c: /* "EXIT" - TERMINATE WITH RETURN CODE */
1375 TASK_KillCurrentTask( AL_reg(context) );
1378 case 0x4d: /* GET RETURN CODE */
1379 AX_reg(context) = 0; /* normal exit */
1382 case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */
1383 if (!INT21_FindFirst(context)) break;
1386 case 0x4f: /* "FINDNEXT" - FIND NEXT MATCHING FILE */
1387 if (!INT21_FindNext(context))
1389 DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1390 AX_reg(context) = ER_NoMoreFiles;
1395 case 0x51: /* GET PSP ADDRESS */
1396 case 0x62: /* GET PSP ADDRESS */
1397 /* FIXME: should we return the original DOS PSP upon */
1398 /* Windows startup ? */
1399 BX_reg(context) = GetCurrentPDB();
1402 case 0x52: /* "SYSVARS" - GET LIST OF LISTS */
1403 ES_reg(context) = 0x0;
1404 BX_reg(context) = 0x0;
1405 INT_BARF( context, 0x21 );
1408 case 0x56: /* "RENAME" - RENAME FILE */
1409 if (!MoveFile32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1410 PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context))))
1412 AX_reg(context) = DOS_ExtendedError;
1417 case 0x57: /* FILE DATE AND TIME */
1418 switch (AL_reg(context))
1420 case 0x00: /* Get */
1423 if (!GetFileTime( BX_reg(context), NULL, NULL, &filetime ))
1425 AX_reg(context) = DOS_ExtendedError;
1428 else FileTimeToDosDateTime( &filetime, &DX_reg(context),
1433 case 0x01: /* Set */
1436 DosDateTimeToFileTime( DX_reg(context), CX_reg(context),
1438 if (!SetFileTime( BX_reg(context), NULL, NULL, &filetime ))
1440 AX_reg(context) = DOS_ExtendedError;
1448 case 0x58: /* GET OR SET MEMORY/UMB ALLOCATION STRATEGY */
1449 switch (AL_reg(context))
1452 AX_reg(context) = 1;
1455 AX_reg(context) = 0;
1461 RESET_CFLAG(context);
1464 case 0x5a: /* CREATE TEMPORARY FILE */
1465 if (!INT21_CreateTempFile(context))
1467 AX_reg(context) = DOS_ExtendedError;
1472 case 0x5b: /* CREATE NEW FILE */
1473 if ((AX_reg(context) = _lcreat_uniq( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)), 0 )) == (WORD)HFILE_ERROR16)
1475 AX_reg(context) = DOS_ExtendedError;
1480 case 0x5d: /* NETWORK */
1482 /* network software not installed */
1483 DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1484 AX_reg(context) = DOS_ExtendedError;
1488 case 0x5f: /* NETWORK */
1489 switch (AL_reg(context))
1491 case 0x07: /* ENABLE DRIVE */
1492 if (!DRIVE_Enable( DL_reg(context) ))
1494 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1495 AX_reg(context) = DOS_ExtendedError;
1500 case 0x08: /* DISABLE DRIVE */
1501 if (!DRIVE_Disable( DL_reg(context) ))
1503 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1504 AX_reg(context) = DOS_ExtendedError;
1510 /* network software not installed */
1511 DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1512 AX_reg(context) = DOS_ExtendedError;
1518 case 0x60: /* "TRUENAME" - CANONICALIZE FILENAME OR PATH */
1520 if (!GetFullPathName32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1521 SI_reg(context)), 128,
1522 PTR_SEG_OFF_TO_LIN(ES_reg(context),
1523 DI_reg(context)),NULL))
1525 AX_reg(context) = DOS_ExtendedError;
1528 else AX_reg(context) = 0;
1532 case 0x61: /* UNUSED */
1533 case 0x63: /* UNUSED */
1534 case 0x64: /* OS/2 DOS BOX */
1535 INT_BARF( context, 0x21 );
1538 case 0x65:{/* GET EXTENDED COUNTRY INFORMATION */
1539 extern WORD WINE_LanguageId;
1540 BYTE *dataptr=PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context));;
1541 switch (AL_reg(context)) {
1544 *(WORD*)(dataptr+1) = 41;
1545 *(WORD*)(dataptr+3) = WINE_LanguageId;
1546 *(WORD*)(dataptr+5) = CodePage;
1550 *(DWORD*)(dataptr+1) = MAKELONG(DOSMEM_CollateTable & 0xFFFF,DOSMEM_AllocSelector(DOSMEM_CollateTable>>16));
1551 CX_reg(context) = 258;/*FIXME: size of table?*/
1554 INT_BARF( context, 0x21 );
1560 case 0x66: /* GLOBAL CODE PAGE TABLE */
1561 switch (AL_reg(context))
1564 DX_reg(context) = BX_reg(context) = CodePage;
1565 RESET_CFLAG(context);
1568 CodePage = BX_reg(context);
1569 RESET_CFLAG(context);
1574 case 0x67: /* SET HANDLE COUNT */
1575 SetHandleCount16( BX_reg(context) );
1576 if (DOS_ExtendedError)
1578 AX_reg(context) = DOS_ExtendedError;
1583 case 0x68: /* "FFLUSH" - COMMIT FILE */
1584 case 0x6a: /* COMMIT FILE */
1585 if (!FlushFileBuffers( BX_reg(context) ))
1587 AX_reg(context) = DOS_ExtendedError;
1592 case 0x69: /* DISK SERIAL NUMBER */
1593 switch (AL_reg(context))
1596 if (!INT21_GetDiskSerialNumber(context))
1598 AX_reg(context) = DOS_ExtendedError;
1601 else AX_reg(context) = 0;
1604 if (!INT21_SetDiskSerialNumber(context))
1606 AX_reg(context) = DOS_ExtendedError;
1609 else AX_reg(context) = 1;
1614 case 0x6C: /* Extended Open/Create*/
1615 ExtendedOpenCreateFile(context);
1618 case 0x71: /* MS-DOS 7 (Windows95) - LONG FILENAME FUNCTIONS */
1619 switch(AL_reg(context))
1621 case 0x39: /* Create directory */
1622 if (!CreateDirectory32A( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1623 DX_reg(context) ), NULL))
1625 AX_reg(context) = DOS_ExtendedError;
1629 case 0x3a: /* Remove directory */
1630 if (!RemoveDirectory32A( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1633 AX_reg(context) = DOS_ExtendedError;
1637 case 0x4e: /* Find first file */
1638 /* FIXME: use attributes in CX */
1639 if (!(AX_reg(context) = FindFirstFile16(
1640 PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1641 (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1644 AX_reg(context) = DOS_ExtendedError;
1648 case 0x4f: /* Find next file */
1649 if (!FindNextFile16( BX_reg(context),
1650 (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1653 AX_reg(context) = DOS_ExtendedError;
1657 case 0xa1: /* Find close */
1658 if (!FindClose16( BX_reg(context) ))
1660 AX_reg(context) = DOS_ExtendedError;
1666 case 0x3b: /* Change directory */
1667 case 0x41: /* Delete file */
1668 case 0x43: /* Get/Set file attributes */
1669 case 0x47: /* Get current directory */
1670 case 0x56: /* Move (rename) file */
1671 case 0x6c: /* Create/Open file */
1673 fprintf( stderr, "Unimplemented int21 long file name function:\n");
1674 INT_BARF( context, 0x21 );
1676 AL_reg(context) = 0;
1681 case 0x70: /* MS-DOS 7 (Windows95) - ??? (country-specific?)*/
1682 case 0x72: /* MS-DOS 7 (Windows95) - ??? */
1683 case 0x73: /* MS-DOS 7 (Windows95) - DRIVE LOCKING ??? */
1684 dprintf_int(stddeb,"int21: windows95 function AX %04x\n",
1686 dprintf_int(stddeb, " returning unimplemented\n");
1688 AL_reg(context) = 0;
1691 case 0xdc: /* CONNECTION SERVICES - GET CONNECTION NUMBER */
1692 case 0xea: /* NOVELL NETWARE - RETURN SHELL VERSION */
1696 INT_BARF( context, 0x21 );
1699 dprintf_int( stddeb, "ret21: AX=%04x BX=%04x CX=%04x DX=%04x "
1700 "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
1701 AX_reg(context), BX_reg(context), CX_reg(context),
1702 DX_reg(context), SI_reg(context), DI_reg(context),
1703 (WORD)DS_reg(context), (WORD)ES_reg(context),