/* * DOS interrupt 21h handler */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "windows.h" #include "drive.h" #include "file.h" #include "heap.h" #include "msdos.h" #include "ldt.h" #include "task.h" #include "options.h" #include "miscemu.h" #include "stddebug.h" #include "debug.h" #if defined(__svr4__) || defined(_SCO_DS) /* SVR4 DOESNT do locking the same way must implement properly */ #define LOCK_EX 0 #define LOCK_SH 1 #define LOCK_NB 8 #endif #define DOS_GET_DRIVE(reg) ((reg) ? (reg) - 1 : DRIVE_GetCurrentDrive()) /* Define the drive parameter block, as used by int21/1F * and int21/32. This table can be accessed through the * global 'dpb' pointer, which points into the local dos * heap. */ struct DPB { BYTE drive_num; /* 0=A, etc. */ BYTE unit_num; /* Drive's unit number (?) */ WORD sector_size; /* Sector size in bytes */ BYTE high_sector; /* Highest sector in a cluster */ BYTE shift; /* Shift count (?) */ WORD reserved; /* Number of reserved sectors at start */ BYTE num_FAT; /* Number of FATs */ WORD dir_entries; /* Number of root dir entries */ WORD first_data; /* First data sector */ WORD high_cluster; /* Highest cluster number */ WORD sectors_in_FAT; /* Number of sectors per FAT */ WORD start_dir; /* Starting sector of first dir */ DWORD driver_head; /* Address of device driver header (?) */ BYTE media_ID; /* Media ID */ BYTE access_flag; /* Prev. accessed flag (0=yes,0xFF=no) */ DWORD next; /* Pointer to next DPB in list */ WORD free_search; /* Free cluster search start */ WORD free_clusters; /* Number of free clusters (0xFFFF=unknown) */ }; WORD CodePage = 437; DWORD dpbsegptr; struct DosHeap { BYTE InDosFlag; BYTE mediaID; BYTE biosdate[8]; struct DPB dpb; }; static struct DosHeap *heap; static WORD DosHeapHandle; WORD sharing_retries = 3; /* number of retries at sharing violation */ WORD sharing_pause = 1; /* pause between retries */ extern char TempDirectory[]; static BOOL32 INT21_CreateHeap(void) { if (!(DosHeapHandle = GlobalAlloc16(GMEM_FIXED,sizeof(struct DosHeap)))) { fprintf( stderr, "INT21_Init: Out of memory\n"); return FALSE; } heap = (struct DosHeap *) GlobalLock16(DosHeapHandle); dpbsegptr = PTR_SEG_OFF_TO_SEGPTR(DosHeapHandle,(int)&heap->dpb-(int)heap); heap->InDosFlag = 0; strcpy(heap->biosdate, "01/01/80"); return TRUE; } static BYTE *GetCurrentDTA(void) { TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() ); return (BYTE *)PTR_SEG_TO_LIN( pTask->dta ); } void CreateBPB(int drive, BYTE *data) { if (drive > 1) { setword(data, 512); data[2] = 2; setword(&data[3], 0); data[5] = 2; setword(&data[6], 240); setword(&data[8], 64000); data[0x0a] = 0xf8; setword(&data[0x0b], 40); setword(&data[0x0d], 56); setword(&data[0x0f], 2); setword(&data[0x11], 0); setword(&data[0x1f], 800); data[0x21] = 5; setword(&data[0x22], 1); } else { /* 1.44mb */ setword(data, 512); data[2] = 2; setword(&data[3], 0); data[5] = 2; setword(&data[6], 240); setword(&data[8], 2880); data[0x0a] = 0xf8; setword(&data[0x0b], 6); setword(&data[0x0d], 18); setword(&data[0x0f], 2); setword(&data[0x11], 0); setword(&data[0x1f], 80); data[0x21] = 7; setword(&data[0x22], 2); } } static int INT21_GetFreeDiskSpace( CONTEXT *context ) { DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters; char root[] = "A:\\"; *root += DOS_GET_DRIVE( DL_reg(context) ); if (!GetDiskFreeSpace32A( root, &cluster_sectors, §or_bytes, &free_clusters, &total_clusters )) return 0; AX_reg(context) = cluster_sectors; BX_reg(context) = free_clusters; CX_reg(context) = sector_bytes; DX_reg(context) = total_clusters; return 1; } static int INT21_GetDriveAllocInfo( CONTEXT *context ) { if (!INT21_GetFreeDiskSpace( context )) return 0; if (!heap && !INT21_CreateHeap()) return 0; heap->mediaID = 0xf0; DS_reg(context) = DosHeapHandle; BX_reg(context) = (int)&heap->mediaID - (int)heap; return 1; } static void GetDrivePB( CONTEXT *context, int drive ) { if(!DRIVE_IsValid(drive)) { DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk ); AX_reg(context) = 0x00ff; } else if (heap || INT21_CreateHeap()) { dprintf_int(stddeb, "int21: GetDrivePB not fully implemented.\n"); /* FIXME: I have no idea what a lot of this information should * say or whether it even really matters since we're not allowing * direct block access. However, some programs seem to depend on * getting at least _something_ back from here. The 'next' pointer * does worry me, though. Should we have a complete table of * separate DPBs per drive? Probably, but I'm lazy. :-) -CH */ heap->dpb.drive_num = heap->dpb.unit_num = drive; /*The same?*/ heap->dpb.sector_size = 512; heap->dpb.high_sector = 1; heap->dpb.shift = drive < 2 ? 0 : 6; /*6 for HD, 0 for floppy*/ heap->dpb.reserved = 0; heap->dpb.num_FAT = 1; heap->dpb.dir_entries = 2; heap->dpb.first_data = 2; heap->dpb.high_cluster = 64000; heap->dpb.sectors_in_FAT = 1; heap->dpb.start_dir = 1; heap->dpb.driver_head = 0; heap->dpb.media_ID = (drive > 1) ? 0xF8 : 0xF0; heap->dpb.access_flag = 0; heap->dpb.next = 0; heap->dpb.free_search = 0; heap->dpb.free_clusters = 0xFFFF; /* unknown */ AL_reg(context) = 0x00; DS_reg(context) = SELECTOROF(dpbsegptr); BX_reg(context) = OFFSETOF(dpbsegptr); } } static void ioctlGetDeviceInfo( CONTEXT *context ) { int curr_drive; dprintf_int (stddeb, "int21: ioctl (%d, GetDeviceInfo)\n", BX_reg(context)); curr_drive = DRIVE_GetCurrentDrive(); DX_reg(context) = 0x0140 + curr_drive + ((curr_drive > 1) ? 0x0800 : 0); /* no floppy */ /* bits 0-5 are current drive * bit 6 - file has NOT been written..FIXME: correct? * bit 8 - generate int24 if no diskspace on write/ read past end of file * bit 11 - media not removable */ RESET_CFLAG(context); } static BOOL32 ioctlGenericBlkDevReq( CONTEXT *context ) { BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk ); return TRUE; } if (CH_reg(context) != 0x08) { INT_BARF( context, 0x21 ); return FALSE; } switch (CL_reg(context)) { case 0x4a: /* lock logical volume */ dprintf_int(stddeb,"int21: lock logical volume (%d) level %d mode %d\n",drive,BH_reg(context),DX_reg(context)); break; case 0x60: /* get device parameters */ /* used by w4wgrp's winfile */ memset(dataptr, 0, 0x26); dataptr[0] = 0x04; dataptr[6] = 0; /* media type */ if (drive > 1) { dataptr[1] = 0x05; /* fixed disk */ setword(&dataptr[2], 0x01); /* non removable */ setword(&dataptr[4], 0x300); /* # of cylinders */ } else { dataptr[1] = 0x07; /* block dev, floppy */ setword(&dataptr[2], 0x02); /* removable */ setword(&dataptr[4], 80); /* # of cylinders */ } CreateBPB(drive, &dataptr[7]); RESET_CFLAG(context); break; case 0x66:/* get disk serial number */ { char label[12],fsname[9],path[4]; DWORD serial; strcpy(path,"x:\\");path[0]=drive+'A'; GetVolumeInformation32A( path,label,12,&serial,NULL,NULL,fsname,9 ); *(WORD*)dataptr = 0; memcpy(dataptr+2,&serial,4); memcpy(dataptr+6,label ,11); memcpy(dataptr+17,fsname,8); } break; case 0x6a: dprintf_int(stddeb,"int21: logical volume %d unlocked.\n",drive); break; default: INT_BARF( context, 0x21 ); } return FALSE; } static void INT21_GetSystemDate( CONTEXT *context ) { SYSTEMTIME systime; GetLocalTime( &systime ); CX_reg(context) = systime.wYear; DX_reg(context) = (systime.wMonth << 8) | systime.wDay; AX_reg(context) = systime.wDayOfWeek; } static void INT21_GetSystemTime( CONTEXT *context ) { SYSTEMTIME systime; GetLocalTime( &systime ); CX_reg(context) = (systime.wHour << 8) | systime.wMinute; DX_reg(context) = (systime.wSecond << 8) | (systime.wMilliseconds / 10); } static BOOL32 INT21_CreateFile( CONTEXT *context ) { AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ), CX_reg(context) ); return (AX_reg(context) == (WORD)HFILE_ERROR16); } static void OpenExistingFile( CONTEXT *context ) { AX_reg(context) = _lopen16( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)), AL_reg(context) ); if (AX_reg(context) == (WORD)HFILE_ERROR16) { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); } #if 0 { int handle; int mode; int lock; switch (AX_reg(context) & 0x0070) { case 0x00: /* compatability mode */ case 0x40: /* DENYNONE */ lock = -1; break; case 0x30: /* DENYREAD */ dprintf_int(stddeb, "OpenExistingFile (%s): DENYREAD changed to DENYALL\n", (char *)PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context))); case 0x10: /* DENYALL */ lock = LOCK_EX; break; case 0x20: /* DENYWRITE */ lock = LOCK_SH; break; default: lock = -1; } if (lock != -1) { int result,retries=sharing_retries; { #if defined(__svr4__) || defined(_SCO_DS) printf("Should call flock and needs porting to lockf\n"); result = 0; retries = 0; #else result = flock(handle, lock | LOCK_NB); #endif if ( retries && (!result) ) { int i; for(i=0;i<32768*((int)sharing_pause);i++) result++; /* stop the optimizer */ for(i=0;i<32768*((int)sharing_pause);i++) result--; } } while( (!result) && (!(retries--)) ); if(result) { errno_to_doserr(); AX_reg(context) = DOS_ExtendedError; close(handle); SET_CFLAG(context); return; } } Error (0,0,0); AX_reg(context) = handle; RESET_CFLAG(context); } #endif } static void CloseFile( CONTEXT *context ) { if ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0) { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); } } static BOOL32 INT21_ExtendedOpenCreateFile(CONTEXT *context ) { BOOL32 bExtendedError = FALSE; BYTE action = DL_reg(context); /* Shuffle arguments to call OpenExistingFile */ AL_reg(context) = BL_reg(context); DX_reg(context) = SI_reg(context); /* BX,CX and DX should be preserved */ OpenExistingFile(context); if ((EFL_reg(context) & 0x0001) == 0) /* File exists */ { UINT16 uReturnCX = 0; /* Now decide what do do */ if ((action & 0x07) == 0) { BX_reg(context) = AX_reg(context); CloseFile(context); AX_reg(context) = 0x0050; /*File exists*/ SET_CFLAG(context); dprintf_int(stddeb, "int21: extended open/create: failed because file exists \n"); } else if ((action & 0x07) == 2) { /* Truncate it, but first check if opened for write */ if ((BL_reg(context) & 0x0007)== 0) { BX_reg(context) = AX_reg(context); CloseFile(context); dprintf_int(stddeb, "int21: extended open/create: failed, trunc on ro file"); AX_reg(context) = 0x000C; /*Access code invalid*/ SET_CFLAG(context); } else { /* Shuffle arguments to call CloseFile while * preserving BX and DX */ dprintf_int(stddeb, "int21: extended open/create: Closing before truncate\n"); BX_reg(context) = AX_reg(context); CloseFile(context); if (EFL_reg(context) & 0x0001) { dprintf_int(stddeb, "int21: extended open/create: close before trunc failed"); AX_reg(context) = 0x0019; /*Seek Error*/ CX_reg(context) = 0; SET_CFLAG(context); } /* Shuffle arguments to call CreateFile */ dprintf_int(stddeb, "int21: extended open/create: Truncating\n"); AL_reg(context) = BL_reg(context); /* CX is still the same */ DX_reg(context) = SI_reg(context); bExtendedError = INT21_CreateFile(context); if (EFL_reg(context) & 0x0001) /*no file open, flags set */ { dprintf_int(stddeb, "int21: extended open/create: trunc failed"); return bExtendedError; } uReturnCX = 0x3; } } else uReturnCX = 0x1; CX_reg(context) = uReturnCX; } else /* file does not exist */ { RESET_CFLAG(context); /* was set by OpenExistingFile(context) */ if ((action & 0xF0)== 0) { CX_reg(context) = 0; SET_CFLAG(context); dprintf_int(stddeb, "int21: extended open/create: failed, file dosen't exist\n"); } else { /* Shuffle arguments to call CreateFile */ dprintf_int(stddeb, "int21: extended open/create: Creating\n"); AL_reg(context) = BL_reg(context); /* CX should still be the same */ DX_reg(context) = SI_reg(context); bExtendedError = INT21_CreateFile(context); if (EFL_reg(context) & 0x0001) /*no file open, flags set */ { dprintf_int(stddeb, "int21: extended open/create: create failed\n"); return bExtendedError; } CX_reg(context) = 2; } } return bExtendedError; } static BOOL32 INT21_ChangeDir( CONTEXT *context ) { int drive; char *dirname = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)); dprintf_int(stddeb,"int21: changedir %s\n", dirname); if (dirname[0] && (dirname[1] == ':')) { drive = toupper(dirname[0]) - 'A'; dirname += 2; } else drive = DRIVE_GetCurrentDrive(); return DRIVE_Chdir( drive, dirname ); } static int INT21_FindFirst( CONTEXT *context ) { char *p; const char *path; DOS_FULL_NAME full_name; FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA(); path = (const char *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); dta->unixPath = NULL; if (!DOSFS_GetFullName( path, FALSE, &full_name )) { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); return 0; } dta->unixPath = HEAP_strdupA( GetProcessHeap(), 0, full_name.long_name ); p = strrchr( dta->unixPath, '/' ); *p = '\0'; /* Note: terminating NULL in dta->mask overwrites dta->search_attr * (doesn't matter as it is set below anyway) */ if (!DOSFS_ToDosFCBFormat( p + 1, dta->mask )) { HeapFree( GetProcessHeap(), 0, dta->unixPath ); dta->unixPath = NULL; DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk ); AX_reg(context) = ER_FileNotFound; SET_CFLAG(context); return 0; } dta->drive = (path[0] && (path[1] == ':')) ? toupper(path[0]) - 'A' : DRIVE_GetCurrentDrive(); dta->count = 0; dta->search_attr = CL_reg(context); return 1; } static int INT21_FindNext( CONTEXT *context ) { FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA(); WIN32_FIND_DATA32A entry; int count; if (!dta->unixPath) return 0; if (!(count = DOSFS_FindNext( dta->unixPath, dta->mask, NULL, dta->drive, dta->search_attr, dta->count, &entry ))) { HeapFree( GetProcessHeap(), 0, dta->unixPath ); dta->unixPath = NULL; return 0; } if ((int)dta->count + count > 0xffff) { fprintf( stderr, "Too many directory entries in %s\n", dta->unixPath ); HeapFree( GetProcessHeap(), 0, dta->unixPath ); dta->unixPath = NULL; return 0; } dta->count += count; dta->fileattr = entry.dwFileAttributes; dta->filesize = entry.nFileSizeLow; FileTimeToDosDateTime( &entry.ftLastWriteTime, &dta->filedate, &dta->filetime ); strcpy( dta->filename, entry.cAlternateFileName ); return 1; } static BOOL32 INT21_CreateTempFile( CONTEXT *context ) { static int counter = 0; char *name = PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ); char *p = name + strlen(name); /* despite what Ralf Brown says, some programs seem to call without * ending backslash (DOS accepts that, so we accept it too) */ if ((p == name) || (p[-1] != '\\')) *p++ = '\\'; for (;;) { sprintf( p, "wine%04x.%03d", (int)getpid(), counter ); counter = (counter + 1) % 1000; if ((AX_reg(context) = _lcreat_uniq( name, 0 )) != (WORD)HFILE_ERROR16) { dprintf_int( stddeb, "INT21_CreateTempFile: created %s\n", name ); return TRUE; } if (DOS_ExtendedError != ER_FileExists) return FALSE; } } static BOOL32 INT21_GetCurrentDirectory( CONTEXT *context ) { int drive = DOS_GET_DRIVE( DL_reg(context) ); char *ptr = (char *)PTR_SEG_OFF_TO_LIN( DS_reg(context), SI_reg(context) ); if (!DRIVE_IsValid(drive)) { DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk ); return FALSE; } lstrcpyn32A( ptr, DRIVE_GetDosCwd(drive), 64 ); AX_reg(context) = 0x0100; /* success return code */ return TRUE; } static int INT21_GetDiskSerialNumber( CONTEXT *context ) { BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk ); return 0; } *(WORD *)dataptr = 0; *(DWORD *)(dataptr + 2) = DRIVE_GetSerialNumber( drive ); memcpy( dataptr + 6, DRIVE_GetLabel( drive ), 11 ); strncpy(dataptr + 0x11, "FAT16 ", 8); return 1; } static int INT21_SetDiskSerialNumber( CONTEXT *context ) { BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk ); return 0; } DRIVE_SetSerialNumber( drive, *(DWORD *)(dataptr + 2) ); return 1; } /* microsoft's programmers should be shot for using CP/M style int21 calls in Windows for Workgroup's winfile.exe */ static int INT21_FindFirstFCB( CONTEXT *context ) { BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); FINDFILE_FCB *pFCB; LPCSTR root, cwd; int drive; if (*fcb == 0xff) pFCB = (FINDFILE_FCB *)(fcb + 7); else pFCB = (FINDFILE_FCB *)fcb; drive = DOS_GET_DRIVE( pFCB->drive ); root = DRIVE_GetRoot( drive ); cwd = DRIVE_GetUnixCwd( drive ); pFCB->unixPath = HeapAlloc( GetProcessHeap(), 0, strlen(root)+strlen(cwd)+2 ); if (!pFCB->unixPath) return 0; strcpy( pFCB->unixPath, root ); strcat( pFCB->unixPath, "/" ); strcat( pFCB->unixPath, cwd ); pFCB->count = 0; return 1; } static int INT21_FindNextFCB( CONTEXT *context ) { BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)); FINDFILE_FCB *pFCB; DOS_DIRENTRY_LAYOUT *pResult = (DOS_DIRENTRY_LAYOUT *)GetCurrentDTA(); WIN32_FIND_DATA32A entry; BYTE attr; int count; if (*fcb == 0xff) /* extended FCB ? */ { attr = fcb[6]; pFCB = (FINDFILE_FCB *)(fcb + 7); } else { attr = 0; pFCB = (FINDFILE_FCB *)fcb; } if (!pFCB->unixPath) return 0; if (!(count = DOSFS_FindNext( pFCB->unixPath, pFCB->filename, NULL, DOS_GET_DRIVE( pFCB->drive ), attr, pFCB->count, &entry ))) { HeapFree( GetProcessHeap(), 0, pFCB->unixPath ); pFCB->unixPath = NULL; return 0; } pFCB->count += count; if (*fcb == 0xff) { /* place extended FCB header before pResult if called with extended FCB */ *(BYTE *)pResult = 0xff; (BYTE *)pResult +=6; /* leave reserved field behind */ *(BYTE *)pResult = entry.dwFileAttributes; ((BYTE *)pResult)++; } *(BYTE *)pResult = DOS_GET_DRIVE( pFCB->drive ); /* DOS_DIRENTRY_LAYOUT after current drive number */ ((BYTE *)pResult)++; pResult->fileattr = entry.dwFileAttributes; pResult->cluster = 0; /* what else? */ pResult->filesize = entry.nFileSizeLow; memset( pResult->reserved, 0, sizeof(pResult->reserved) ); FileTimeToDosDateTime( &entry.ftLastWriteTime, &pResult->filedate, &pResult->filetime ); /* Convert file name to FCB format */ memset( pResult->filename, ' ', sizeof(pResult->filename) ); if (!strcmp( entry.cAlternateFileName, "." )) pResult->filename[0] = '.'; else if (!strcmp( entry.cAlternateFileName, ".." )) pResult->filename[0] = pResult->filename[1] = '.'; else { char *p = strrchr( entry.cAlternateFileName, '.' ); if (p && p[1] && (p != entry.cAlternateFileName)) { memcpy( pResult->filename, entry.cAlternateFileName, MIN( (p - entry.cAlternateFileName), 8 ) ); memcpy( pResult->filename + 8, p + 1, MIN( strlen(p), 3 ) ); } else memcpy( pResult->filename, entry.cAlternateFileName, MIN( strlen(entry.cAlternateFileName), 8 ) ); } return 1; } static void DeleteFileFCB( CONTEXT *context ) { fprintf( stderr, "DeleteFileFCB: not implemented yet\n" ); } static void RenameFileFCB( CONTEXT *context ) { fprintf( stderr, "RenameFileFCB: not implemented yet\n" ); } static void fLock( CONTEXT * context ) { switch ( AX_reg(context) & 0xff ) { case 0x00: /* LOCK */ if (!LockFile(BX_reg(context), MAKELONG(DX_reg(context),CX_reg(context)), 0, MAKELONG(DI_reg(context),SI_reg(context)), 0)) { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); } break; case 0x01: /* UNLOCK */ if (!UnlockFile(BX_reg(context), MAKELONG(DX_reg(context),CX_reg(context)), 0, MAKELONG(DI_reg(context),SI_reg(context)), 0)) { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); } return; default: AX_reg(context) = 0x0001; SET_CFLAG(context); return; } } extern void LOCAL_PrintHeap (WORD ds); /*********************************************************************** * DOS3Call (KERNEL.102) */ void WINAPI DOS3Call( CONTEXT *context ) { BOOL32 bSetDOSExtendedError = FALSE; dprintf_int( stddeb, "int21: AX=%04x BX=%04x CX=%04x DX=%04x " "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n", AX_reg(context), BX_reg(context), CX_reg(context), DX_reg(context), SI_reg(context), DI_reg(context), (WORD)DS_reg(context), (WORD)ES_reg(context), EFL_reg(context) ); if (AH_reg(context) == 0x59) /* Get extended error info */ { AX_reg(context) = DOS_ExtendedError; BH_reg(context) = DOS_ErrorClass; BL_reg(context) = DOS_ErrorAction; CH_reg(context) = DOS_ErrorLocus; return; } DOS_ERROR( 0, 0, 0, 0 ); RESET_CFLAG(context); /* Not sure if this is a good idea */ switch(AH_reg(context)) { case 0x00: /* TERMINATE PROGRAM */ TASK_KillCurrentTask( 0 ); break; case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */ case 0x02: /* WRITE CHARACTER TO STANDARD OUTPUT */ case 0x03: /* READ CHARACTER FROM STDAUX */ case 0x04: /* WRITE CHARACTER TO STDAUX */ case 0x05: /* WRITE CHARACTER TO PRINTER */ case 0x06: /* DIRECT CONSOLE IN/OUTPUT */ case 0x07: /* DIRECT CHARACTER INPUT, WITHOUT ECHO */ case 0x08: /* CHARACTER INPUT WITHOUT ECHO */ case 0x09: /* WRITE STRING TO STANDARD OUTPUT */ case 0x0a: /* BUFFERED INPUT */ case 0x0b: /* GET STDIN STATUS */ case 0x0c: /* FLUSH BUFFER AND READ STANDARD INPUT */ case 0x0f: /* OPEN FILE USING FCB */ case 0x10: /* CLOSE FILE USING FCB */ case 0x14: /* SEQUENTIAL READ FROM FCB FILE */ case 0x15: /* SEQUENTIAL WRITE TO FCB FILE */ case 0x16: /* CREATE OR TRUNCATE FILE USING FCB */ case 0x21: /* READ RANDOM RECORD FROM FCB FILE */ case 0x22: /* WRITE RANDOM RECORD TO FCB FILE */ case 0x23: /* GET FILE SIZE FOR FCB */ case 0x24: /* SET RANDOM RECORD NUMBER FOR FCB */ case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */ case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */ case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */ case 0x29: /* PARSE FILENAME INTO FCB */ case 0x37: /* "SWITCHAR" - GET SWITCH CHARACTER "SWITCHAR" - SET SWITCH CHARACTER "AVAILDEV" - SPECIFY \DEV\ PREFIX USE */ case 0x54: /* GET VERIFY FLAG */ INT_BARF( context, 0x21 ); break; case 0x2e: /* SET VERIFY FLAG */ /* we cannot change the behaviour anyway, so just ignore it */ break; case 0x18: /* NULL FUNCTIONS FOR CP/M COMPATIBILITY */ case 0x1d: case 0x1e: case 0x20: case 0x6b: /* NULL FUNCTION */ AL_reg(context) = 0; break; case 0x5c: /* "FLOCK" - RECORD LOCKING */ fLock(context); break; case 0x0d: /* DISK BUFFER FLUSH */ RESET_CFLAG(context); /* dos 6+ only */ break; case 0x0e: /* SELECT DEFAULT DRIVE */ DRIVE_SetCurrentDrive( DL_reg(context) ); AL_reg(context) = MAX_DOS_DRIVES; break; case 0x11: /* FIND FIRST MATCHING FILE USING FCB */ if (!INT21_FindFirstFCB(context)) { AL_reg(context) = 0xff; break; } /* else fall through */ case 0x12: /* FIND NEXT MATCHING FILE USING FCB */ AL_reg(context) = INT21_FindNextFCB(context) ? 0x00 : 0xff; break; case 0x13: /* DELETE FILE USING FCB */ DeleteFileFCB(context); break; case 0x17: /* RENAME FILE USING FCB */ RenameFileFCB(context); break; case 0x19: /* GET CURRENT DEFAULT DRIVE */ AL_reg(context) = DRIVE_GetCurrentDrive(); break; case 0x1a: /* SET DISK TRANSFER AREA ADDRESS */ { TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() ); pTask->dta = PTR_SEG_OFF_TO_SEGPTR(DS_reg(context),DX_reg(context)); dprintf_int(stddeb, "int21: Set DTA: %08lx\n", pTask->dta); } break; case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */ DL_reg(context) = 0; if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff; break; case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */ if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff; break; case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */ GetDrivePB(context, DRIVE_GetCurrentDrive()); break; case 0x25: /* SET INTERRUPT VECTOR */ INT_SetHandler( AL_reg(context), (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( DS_reg(context), DX_reg(context))); break; case 0x2a: /* GET SYSTEM DATE */ INT21_GetSystemDate(context); break; case 0x2b: /* SET SYSTEM DATE */ fprintf( stdnimp, "SetSystemDate(%02d/%02d/%04d): not allowed\n", DL_reg(context), DH_reg(context), CX_reg(context) ); AL_reg(context) = 0; /* Let's pretend we succeeded */ break; case 0x2c: /* GET SYSTEM TIME */ INT21_GetSystemTime(context); break; case 0x2d: /* SET SYSTEM TIME */ fprintf( stdnimp, "SetSystemTime(%02d:%02d:%02d.%02d): not allowed\n", CH_reg(context), CL_reg(context), DH_reg(context), DL_reg(context) ); AL_reg(context) = 0; /* Let's pretend we succeeded */ break; case 0x2f: /* GET DISK TRANSFER AREA ADDRESS */ { TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() ); ES_reg(context) = SELECTOROF( pTask->dta ); BX_reg(context) = OFFSETOF( pTask->dta ); } break; case 0x30: /* GET DOS VERSION */ AX_reg(context) = (HIWORD(GetVersion16()) >> 8) | (HIWORD(GetVersion16()) << 8); BX_reg(context) = 0x0012; /* 0x123456 is Wine's serial # */ CX_reg(context) = 0x3456; break; case 0x31: /* TERMINATE AND STAY RESIDENT */ INT_BARF( context, 0x21 ); break; case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */ GetDrivePB(context, DOS_GET_DRIVE( DL_reg(context) ) ); break; case 0x33: /* MULTIPLEXED */ switch (AL_reg(context)) { case 0x00: /* GET CURRENT EXTENDED BREAK STATE */ DL_reg(context) = 0; break; case 0x01: /* SET EXTENDED BREAK STATE */ break; case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/ DL_reg(context) = 0; break; case 0x05: /* GET BOOT DRIVE */ DL_reg(context) = 3; /* c: is Wine's bootdrive (a: is 1)*/ break; case 0x06: /* GET TRUE VERSION NUMBER */ BX_reg(context) = (HIWORD(GetVersion16() >> 8)) | (HIWORD(GetVersion16() << 8)); DX_reg(context) = 0x00; break; default: INT_BARF( context, 0x21 ); break; } break; case 0x34: /* GET ADDRESS OF INDOS FLAG */ if (!heap) INT21_CreateHeap(); ES_reg(context) = DosHeapHandle; BX_reg(context) = (int)&heap->InDosFlag - (int)heap; break; case 0x35: /* GET INTERRUPT VECTOR */ { FARPROC16 addr = INT_GetHandler( AL_reg(context) ); ES_reg(context) = SELECTOROF(addr); BX_reg(context) = OFFSETOF(addr); } break; case 0x36: /* GET FREE DISK SPACE */ if (!INT21_GetFreeDiskSpace(context)) AX_reg(context) = 0xffff; break; case 0x38: /* GET COUNTRY-SPECIFIC INFORMATION */ AX_reg(context) = 0x02; /* no country support available */ SET_CFLAG(context); break; case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */ bSetDOSExtendedError = (!CreateDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ), NULL)); break; case 0x3a: /* "RMDIR" - REMOVE SUBDIRECTORY */ bSetDOSExtendedError = (!RemoveDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ))); break; case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */ bSetDOSExtendedError = !INT21_ChangeDir(context); break; case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */ AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ), CX_reg(context) ); bSetDOSExtendedError = (AX_reg(context) == (WORD)HFILE_ERROR16); break; case 0x3d: /* "OPEN" - OPEN EXISTING FILE */ OpenExistingFile(context); break; case 0x3e: /* "CLOSE" - CLOSE FILE */ bSetDOSExtendedError = ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0); break; case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */ { LONG result = WIN16_hread( BX_reg(context), PTR_SEG_OFF_TO_SEGPTR( DS_reg(context), DX_reg(context) ), CX_reg(context) ); if (result == -1) bSetDOSExtendedError = TRUE; else AX_reg(context) = (WORD)result; } break; case 0x40: /* "WRITE" - WRITE TO FILE OR DEVICE */ { LONG result = _hwrite16( BX_reg(context), PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ), CX_reg(context) ); if (result == -1) bSetDOSExtendedError = TRUE; else AX_reg(context) = (WORD)result; } break; case 0x41: /* "UNLINK" - DELETE FILE */ bSetDOSExtendedError = (!DeleteFile32A( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ))); break; case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */ { LONG status = _llseek16( BX_reg(context), MAKELONG(DX_reg(context),CX_reg(context)), AL_reg(context) ); if (status == -1) bSetDOSExtendedError = TRUE; else { AX_reg(context) = LOWORD(status); DX_reg(context) = HIWORD(status); } } break; case 0x43: /* FILE ATTRIBUTES */ switch (AL_reg(context)) { case 0x00: AX_reg(context) = (WORD)GetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context))); if (AX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE; else CX_reg(context) = AX_reg(context); break; case 0x01: bSetDOSExtendedError = (!SetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)), CX_reg(context) )); break; } break; case 0x44: /* IOCTL */ switch (AL_reg(context)) { case 0x00: ioctlGetDeviceInfo(context); break; case 0x01: break; case 0x05:{ /* IOCTL - WRITE TO BLOCK DEVICE CONTROL CHANNEL */ BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)); int i; int drive = DOS_GET_DRIVE(BL_reg(context)); fprintf(stdnimp,"int21: program tried to write to block device control channel of drive %d:\n",drive); for (i=0;i>16)); CX_reg(context) = 258;/*FIXME: size of table?*/ break; default: INT_BARF( context, 0x21 ); SET_CFLAG(context); break; } break; } case 0x66: /* GLOBAL CODE PAGE TABLE */ switch (AL_reg(context)) { case 0x01: DX_reg(context) = BX_reg(context) = CodePage; RESET_CFLAG(context); break; case 0x02: CodePage = BX_reg(context); RESET_CFLAG(context); break; } break; case 0x67: /* SET HANDLE COUNT */ SetHandleCount16( BX_reg(context) ); if (DOS_ExtendedError) bSetDOSExtendedError = TRUE; break; case 0x68: /* "FFLUSH" - COMMIT FILE */ case 0x6a: /* COMMIT FILE */ bSetDOSExtendedError = (!FlushFileBuffers( BX_reg(context) )); break; case 0x69: /* DISK SERIAL NUMBER */ switch (AL_reg(context)) { case 0x00: if (!INT21_GetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE; else AX_reg(context) = 0; break; case 0x01: if (!INT21_SetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE; else AX_reg(context) = 1; break; } break; case 0x6C: /* Extended Open/Create*/ bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context); break; case 0x71: /* MS-DOS 7 (Windows95) - LONG FILENAME FUNCTIONS */ switch(AL_reg(context)) { case 0x39: /* Create directory */ bSetDOSExtendedError = (!CreateDirectory32A( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ), NULL)); break; case 0x3a: /* Remove directory */ bSetDOSExtendedError = (!RemoveDirectory32A( PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) ))); break; case 0x43: /* Get/Set file attributes */ switch (BL_reg(context)) { case 0x00: /* Get file attributes */ CX_reg(context) = (WORD)GetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context))); if (CX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE; break; case 0x01: bSetDOSExtendedError = (!SetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context)), CX_reg(context) ) ); break; default: fprintf( stderr, "Unimplemented int21 long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); AL_reg(context) = 0; break; } break; case 0x47: /* Get current directory */ bSetDOSExtendedError = !INT21_GetCurrentDirectory(context); break; case 0x4e: /* Find first file */ /* FIXME: use attributes in CX */ if ((AX_reg(context) = FindFirstFile16( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)), (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context), DI_reg(context)))) == INVALID_HANDLE_VALUE16) bSetDOSExtendedError = TRUE; break; case 0x4f: /* Find next file */ if (!FindNextFile16( BX_reg(context), (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context), DI_reg(context)))) bSetDOSExtendedError = TRUE; break; case 0xa1: /* Find close */ bSetDOSExtendedError = (!FindClose16( BX_reg(context) )); break; case 0xa0: break; case 0x60: switch(CL_reg(context)) { case 0x02: /*Get canonical long filename or path */ if (!GetFullPathName32A ( PTR_SEG_OFF_TO_LIN(DS_reg(context), SI_reg(context)), 128, PTR_SEG_OFF_TO_LIN(ES_reg(context), DI_reg(context)),NULL)) bSetDOSExtendedError = TRUE; else AX_reg(context) = 0; break; default: fprintf( stderr, "Unimplemented int21 long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); AL_reg(context) = 0; break; } break; case 0x6c: /* Create or open file */ /* translate Dos 7 action to Dos 6 action */ bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context); break; case 0x3b: /* Change directory */ if (!SetCurrentDirectory32A(PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) )) ) { SET_CFLAG(context); AL_reg(context) = DOS_ExtendedError; } break; case 0x41: /* Delete file */ if (!DeleteFile32A(PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context)) )) { SET_CFLAG(context); AL_reg(context) = DOS_ExtendedError; } break; case 0x56: /* Move (rename) file */ default: fprintf( stderr, "Unimplemented int21 long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); AL_reg(context) = 0; break; } break; case 0x70: /* MS-DOS 7 (Windows95) - ??? (country-specific?)*/ case 0x72: /* MS-DOS 7 (Windows95) - ??? */ case 0x73: /* MS-DOS 7 (Windows95) - DRIVE LOCKING ??? */ dprintf_int(stddeb,"int21: windows95 function AX %04x\n", AX_reg(context)); dprintf_int(stddeb, " returning unimplemented\n"); SET_CFLAG(context); AL_reg(context) = 0; break; case 0xdc: /* CONNECTION SERVICES - GET CONNECTION NUMBER */ case 0xea: /* NOVELL NETWARE - RETURN SHELL VERSION */ break; default: INT_BARF( context, 0x21 ); break; } /* END OF SWITCH */ if( bSetDOSExtendedError ) /* set general error condition */ { AX_reg(context) = DOS_ExtendedError; SET_CFLAG(context); } dprintf_int( stddeb, "ret21: AX=%04x BX=%04x CX=%04x DX=%04x " "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n", AX_reg(context), BX_reg(context), CX_reg(context), DX_reg(context), SI_reg(context), DI_reg(context), (WORD)DS_reg(context), (WORD)ES_reg(context), EFL_reg(context)); } FARPROC16 WINAPI GetSetKernelDOSProc(FARPROC16 DosProc) { fprintf(stderr, "GetSetKernelDOSProc(DosProc: %08x);\n", (UINT32)DosProc); return NULL; }