/* * DOS interrupt 21h handler * * Copyright 1993, 1994 Erik Bos * Copyright 1996 Alexandre Julliard * Copyright 1997 Andreas Mohr * Copyright 1998 Uwe Bonnes * Copyright 1998, 1999 Ove Kaaven * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #ifdef HAVE_SYS_FILE_H # include #endif #include #ifdef HAVE_SYS_TIME_H # include #endif #include #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_UTIME_H # include #endif #include #include "windef.h" #include "winbase.h" #include "winternl.h" #include "wingdi.h" #include "winuser.h" /* SW_NORMAL */ #include "wine/winbase16.h" #include "winerror.h" #include "drive.h" #include "file.h" #include "callback.h" #include "msdos.h" #include "miscemu.h" #include "task.h" #include "wine/unicode.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(int21); #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) */ }; struct EDPB /* FAT32 extended Drive Parameter Block */ { /* from Ralf Brown's Interrupt List */ struct DPB dpb; /* first 24 bytes = original DPB */ BYTE edpb_flags; /* undocumented/unknown flags */ DWORD next_edpb; /* pointer to next EDPB */ WORD free_cluster; /* cluster to start search for free space on write, typically the last cluster allocated */ WORD clusters_free; /* number of free clusters on drive or FFFF = unknown */ WORD clusters_free_hi; /* hiword of clusters_free */ WORD mirroring_flags; /* mirroring flags: bit 7 set = do not mirror active FAT */ /* bits 0-3 = 0-based number of the active FAT */ WORD info_sector; /* sector number of file system info sector, or FFFF for none */ WORD spare_boot_sector; /* sector number of backup boot sector, or FFFF for none */ DWORD first_cluster; /* sector number of the first cluster */ DWORD max_cluster; /* sector number of the last cluster */ DWORD fat_clusters; /* number of clusters occupied by FAT */ DWORD root_cluster; /* cluster number of start of root directory */ DWORD free_cluster2; /* same as free_cluster: cluster at which to start search for free space when writing */ }; DWORD dpbsegptr; struct DosHeap { BYTE mediaID; BYTE biosdate[8]; struct DPB dpb; }; static struct DosHeap *heap; static WORD DosHeapHandle; extern char TempDirectory[]; static void INT21_ReadConfigSys(void) { static int done; if (!done) DOSCONF_ReadConfig(); done = 1; } static BOOL INT21_CreateHeap(void) { if (!(DosHeapHandle = GlobalAlloc16(GMEM_FIXED,sizeof(struct DosHeap)))) { WARN("Out of memory\n"); return FALSE; } heap = (struct DosHeap *) GlobalLock16(DosHeapHandle); dpbsegptr = MAKESEGPTR(DosHeapHandle,(int)&heap->dpb-(int)heap); strcpy(heap->biosdate, "01/01/80"); return TRUE; } static BYTE *GetCurrentDTA( CONTEXT86 *context ) { TDB *pTask = TASK_GetCurrent(); /* FIXME: This assumes DTA was set correctly! */ return (BYTE *)CTX_SEG_OFF_TO_LIN( context, SELECTOROF(pTask->dta), (DWORD)OFFSETOF(pTask->dta) ); } void CreateBPB(int drive, BYTE *data, BOOL16 limited) /* limited == TRUE is used with INT 0x21/0x440d */ { 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); if (!limited) { 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); if (!limited) { setword(&data[0x1f], 80); data[0x21] = 7; setword(&data[0x22], 2); } } } static int INT21_GetFreeDiskSpace( CONTEXT86 *context ) { DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters; char root[] = "A:\\"; *root += DOS_GET_DRIVE( DL_reg(context) ); if (!GetDiskFreeSpaceA( root, &cluster_sectors, §or_bytes, &free_clusters, &total_clusters )) return 0; SET_AX( context, cluster_sectors ); SET_BX( context, free_clusters ); SET_CX( context, sector_bytes ); SET_DX( context, total_clusters ); return 1; } static int INT21_GetDriveAllocInfo( CONTEXT86 *context ) { if (!INT21_GetFreeDiskSpace( context )) return 0; if (!heap && !INT21_CreateHeap()) return 0; heap->mediaID = 0xf0; context->SegDs = DosHeapHandle; SET_BX( context, (int)&heap->mediaID - (int)heap ); return 1; } static int FillInDrivePB( int drive ) { if(!DRIVE_IsValid(drive)) { SetLastError( ERROR_INVALID_DRIVE ); return 0; } else if (heap || INT21_CreateHeap()) { /* 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 */ return 1; } return 0; } static void GetDrivePB( CONTEXT86 *context, int drive ) { if (FillInDrivePB( drive )) { SET_AL( context, 0x00 ); context->SegDs = SELECTOROF(dpbsegptr); SET_BX( context, OFFSETOF(dpbsegptr) ); } else { SET_AX( context, 0x00ff ); } } static void ioctlGetDeviceInfo( CONTEXT86 *context ) { int curr_drive; const DOS_DEVICE *dev; TRACE("(%d)\n", BX_reg(context)); RESET_CFLAG(context); /* DOS device ? */ if ((dev = DOSFS_GetDeviceByHandle( DosFileHandleToWin32Handle(BX_reg(context)) ))) { SET_DX( context, dev->flags ); return; } /* it seems to be a file */ curr_drive = DRIVE_GetCurrentDrive(); SET_DX( 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 * bit 14 - don't set file date/time on closing * bit 15 - file is remote */ } static BOOL ioctlGenericBlkDevReq( CONTEXT86 *context ) { BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { SetLastError( ERROR_FILE_NOT_FOUND ); return TRUE; } if (CH_reg(context) != 0x08) { INT_BARF( context, 0x21 ); return FALSE; } switch (CL_reg(context)) { case 0x4a: /* lock logical volume */ TRACE("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, 0x20); /* DOS 6.22 uses 0x20 bytes */ 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], TRUE); RESET_CFLAG(context); break; case 0x41: /* write logical device track */ case 0x61: /* read logical device track */ { BYTE drive = BL_reg(context) ? BL_reg(context) : DRIVE_GetCurrentDrive(); WORD head = *(WORD *)dataptr+1; WORD cyl = *(WORD *)dataptr+3; WORD sect = *(WORD *)dataptr+5; WORD nrsect = *(WORD *)dataptr+7; BYTE *data = (BYTE *)dataptr+9; int (*raw_func)(BYTE, DWORD, DWORD, BYTE *, BOOL); raw_func = (CL_reg(context) == 0x41) ? DRIVE_RawWrite : DRIVE_RawRead; if (raw_func(drive, head*cyl*sect, nrsect, data, FALSE)) RESET_CFLAG(context); else { SET_AX( context, 0x1e ); /* read fault */ SET_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'; GetVolumeInformationA( 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: TRACE("logical volume %d unlocked.\n",drive); break; case 0x6f: memset(dataptr+1, '\0', dataptr[0]-1); dataptr[1] = dataptr[0]; dataptr[2] = 0x07; /* protected mode driver; no eject; no notification */ dataptr[3] = 0xFF; /* no physical drive */ break; case 0x72: /* Trail on error implementation */ SET_AX( context, GetDriveType16(BL_reg(context)) == DRIVE_UNKNOWN ? 0x0f : 0x01 ); SET_CFLAG(context); /* Seems to be set all the time */ break; default: INT_BARF( context, 0x21 ); } return FALSE; } static void INT21_ParseFileNameIntoFCB( CONTEXT86 *context ) { char *filename = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi ); char *fcb = CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi ); char *s; WCHAR *buffer; WCHAR fcbW[12]; INT buffer_len, len; SET_AL( context, 0xff ); /* failed */ TRACE("filename: '%s'\n", filename); s = filename; len = 0; while (*s) { if ((*s != ' ') && (*s != '\r') && (*s != '\n')) { s++; len++; } else break; } buffer_len = MultiByteToWideChar(CP_OEMCP, 0, filename, len, NULL, 0); buffer = HeapAlloc( GetProcessHeap(), 0, (buffer_len + 1) * sizeof(WCHAR)); len = MultiByteToWideChar(CP_OEMCP, 0, filename, len, buffer, buffer_len); buffer[len] = 0; DOSFS_ToDosFCBFormat(buffer, fcbW); HeapFree(GetProcessHeap(), 0, buffer); WideCharToMultiByte(CP_OEMCP, 0, fcbW, 12, fcb + 1, 12, NULL, NULL); *fcb = 0; TRACE("FCB: '%s'\n", fcb + 1); SET_AL( context, ((strchr(filename, '*')) || (strchr(filename, '$'))) != 0 ); /* point DS:SI to first unparsed character */ SET_SI( context, context->Esi + (int)s - (int)filename ); } /* Many calls translate a drive argument like this: drive number (00h = default, 01h = A:, etc) */ static char drivestring[]="default"; char *INT21_DriveName(int drive) { if(drive >0) { drivestring[0]= (unsigned char)drive + '@'; drivestring[1]=':'; drivestring[2]=0; } return drivestring; } static BOOL INT21_CreateFile( CONTEXT86 *context ) { SET_AX( context, _lcreat16( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ), CX_reg(context) ) ); return (AX_reg(context) == (WORD)HFILE_ERROR16); } static HFILE16 _lcreat16_uniq( LPCSTR path, INT attr ) { /* Mask off all flags not explicitly allowed by the doc */ attr &= FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM; return Win32HandleToDosFileHandle( CreateFileA( path, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_NEW, attr, 0 )); } static void OpenExistingFile( CONTEXT86 *context ) { SET_AX( context, _lopen16( CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx), AL_reg(context) )); if (AX_reg(context) == (WORD)HFILE_ERROR16) { SET_AX( context, GetLastError() ); SET_CFLAG(context); } } static BOOL INT21_ExtendedOpenCreateFile(CONTEXT86 *context ) { BOOL bExtendedError = FALSE; BYTE action = DL_reg(context); /* Shuffle arguments to call OpenExistingFile */ SET_AL( context, BL_reg(context) ); SET_DX( context, SI_reg(context) ); /* BX,CX and DX should be preserved */ OpenExistingFile(context); if ((context->EFlags & 0x0001) == 0) /* File exists */ { UINT16 uReturnCX = 0; /* Now decide what do do */ if ((action & 0x07) == 0) { _lclose16( AX_reg(context) ); SET_AX( context, 0x0050 ); /*File exists*/ SET_CFLAG(context); WARN("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) { _lclose16( AX_reg(context) ); WARN("extended open/create: failed, trunc on ro file\n"); SET_AX( context, 0x000C ); /*Access code invalid*/ SET_CFLAG(context); } else { TRACE("extended open/create: Closing before truncate\n"); if (_lclose16( AX_reg(context) )) { WARN("extended open/create: close before trunc failed\n"); SET_AX( context, 0x0019 ); /*Seek Error*/ SET_CX( context, 0 ); SET_CFLAG(context); } /* Shuffle arguments to call CreateFile */ TRACE("extended open/create: Truncating\n"); SET_AL( context, BL_reg(context) ); /* CX is still the same */ SET_DX( context, SI_reg(context) ); bExtendedError = INT21_CreateFile(context); if (context->EFlags & 0x0001) /*no file open, flags set */ { WARN("extended open/create: trunc failed\n"); return bExtendedError; } uReturnCX = 0x3; } } else uReturnCX = 0x1; SET_CX( context, uReturnCX ); } else /* file does not exist */ { RESET_CFLAG(context); /* was set by OpenExistingFile(context) */ if ((action & 0xF0)== 0) { SET_CX( context, 0 ); SET_CFLAG(context); WARN("extended open/create: failed, file dosen't exist\n"); } else { /* Shuffle arguments to call CreateFile */ TRACE("extended open/create: Creating\n"); SET_AL( context, BL_reg(context) ); /* CX should still be the same */ SET_DX( context, SI_reg(context) ); bExtendedError = INT21_CreateFile(context); if (context->EFlags & 0x0001) /*no file open, flags set */ { WARN("extended open/create: create failed\n"); return bExtendedError; } SET_CX( context, 2 ); } } return bExtendedError; } static BOOL INT21_ChangeDir( CONTEXT86 *context ) { int drive; char *dirname = CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx); WCHAR dirnameW[MAX_PATH]; TRACE("changedir %s\n", dirname); if (dirname[0] && (dirname[1] == ':')) { drive = toupper(dirname[0]) - 'A'; dirname += 2; } else drive = DRIVE_GetCurrentDrive(); MultiByteToWideChar(CP_OEMCP, 0, dirname, -1, dirnameW, MAX_PATH); return DRIVE_Chdir( drive, dirnameW ); } static int INT21_FindFirst( CONTEXT86 *context ) { char *p; const char *path; DOS_FULL_NAME full_name; FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA(context); WCHAR pathW[MAX_PATH]; WCHAR maskW[12]; path = (const char *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); MultiByteToWideChar(CP_OEMCP, 0, path, -1, pathW, MAX_PATH); dta->unixPath = NULL; if (!DOSFS_GetFullName( pathW, FALSE, &full_name )) { SET_AX( context, GetLastError() ); SET_CFLAG(context); return 0; } dta->unixPath = HeapAlloc( GetProcessHeap(), 0, strlen(full_name.long_name)+1 ); strcpy( dta->unixPath, full_name.long_name ); p = strrchr( dta->unixPath, '/' ); *p = '\0'; MultiByteToWideChar(CP_OEMCP, 0, p + 1, -1, pathW, MAX_PATH); /* Note: terminating NULL in dta->mask overwrites dta->search_attr * (doesn't matter as it is set below anyway) */ if (!DOSFS_ToDosFCBFormat( pathW, maskW )) { HeapFree( GetProcessHeap(), 0, dta->unixPath ); dta->unixPath = NULL; SetLastError( ERROR_FILE_NOT_FOUND ); SET_AX( context, ERROR_FILE_NOT_FOUND ); SET_CFLAG(context); return 0; } WideCharToMultiByte(CP_OEMCP, 0, maskW, 12, dta->mask, sizeof(dta->mask), NULL, NULL); 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( CONTEXT86 *context ) { FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA(context); WIN32_FIND_DATAA 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) { WARN("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 ); if (!memchr(dta->mask,'?',11)) { /* wildcardless search, release resources in case no findnext will * be issued, and as a workaround in case file creation messes up * findnext, as sometimes happens with pkunzip */ HeapFree( GetProcessHeap(), 0, dta->unixPath ); dta->unixPath = NULL; } return 1; } static BOOL INT21_CreateTempFile( CONTEXT86 *context ) { static int counter = 0; char *name = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ); 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; SET_AX( context, _lcreat16_uniq( name, 0 ) ); if (AX_reg(context) != HFILE_ERROR16) { TRACE("created %s\n", name ); return TRUE; } if (GetLastError() != ERROR_FILE_EXISTS) return FALSE; } } static BOOL INT21_GetCurrentDirectory( CONTEXT86 *context ) { int drive = DOS_GET_DRIVE( DL_reg(context) ); char *ptr = (char *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi ); if (!DRIVE_IsValid(drive)) { SetLastError( ERROR_INVALID_DRIVE ); return FALSE; } WideCharToMultiByte(CP_OEMCP, 0, DRIVE_GetDosCwd(drive), -1, ptr, 64, NULL, NULL); ptr[63] = 0; /* ensure 0 termination */ SET_AX( context, 0x0100 ); /* success return code */ return TRUE; } static int INT21_GetDiskSerialNumber( CONTEXT86 *context ) { BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { SetLastError( ERROR_INVALID_DRIVE ); 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( CONTEXT86 *context ) { BYTE *dataptr = CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); int drive = DOS_GET_DRIVE( BL_reg(context) ); if (!DRIVE_IsValid(drive)) { SetLastError( ERROR_INVALID_DRIVE ); 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( CONTEXT86 *context ) { BYTE *fcb = (BYTE *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); 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 ); if (!DRIVE_IsValid( drive )) return 0; 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( CONTEXT86 *context ) { BYTE *fcb = (BYTE *)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx); FINDFILE_FCB *pFCB; DOS_DIRENTRY_LAYOUT *pResult = (DOS_DIRENTRY_LAYOUT *)GetCurrentDTA(context); WIN32_FIND_DATAA 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 BOOL INT21_networkfunc (CONTEXT86 *context) { switch (AL_reg(context)) { case 0x00: /* Get machine name. */ { char *dst = CTX_SEG_OFF_TO_LIN (context,context->SegDs,context->Edx); TRACE("getting machine name to %p\n", dst); if (gethostname (dst, 15)) { WARN("failed!\n"); SetLastError( ER_NoNetwork ); return TRUE; } else { int len = strlen (dst); while (len < 15) dst[len++] = ' '; dst[15] = 0; SET_CH( context, 1 ); /* Valid */ SET_CL( context, 1 ); /* NETbios number??? */ TRACE("returning %s\n", debugstr_an (dst, 16)); return FALSE; } } default: SetLastError( ER_NoNetwork ); return TRUE; } } /*********************************************************************** * INT_Int21Handler */ void WINAPI INT_Int21Handler( CONTEXT86 *context ) { BOOL bSetDOSExtendedError = FALSE; switch(AH_reg(context)) { case 0x0e: /* SELECT DEFAULT DRIVE */ TRACE("SELECT DEFAULT DRIVE %d\n", DL_reg(context)); DRIVE_SetCurrentDrive( DL_reg(context) ); SET_AL( context, MAX_DOS_DRIVES ); break; case 0x11: /* FIND FIRST MATCHING FILE USING FCB */ TRACE("FIND FIRST MATCHING FILE USING FCB %p\n", CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); if (!INT21_FindFirstFCB(context)) { SET_AL( context, 0xff ); break; } /* else fall through */ case 0x12: /* FIND NEXT MATCHING FILE USING FCB */ SET_AL( context, INT21_FindNextFCB(context) ? 0x00 : 0xff ); break; case 0x19: /* GET CURRENT DEFAULT DRIVE */ SET_AL( context, DRIVE_GetCurrentDrive() ); break; case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */ SET_DL( context, 0 ); if (!INT21_GetDriveAllocInfo(context)) SET_AX( context, 0xffff ); break; case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */ if (!INT21_GetDriveAllocInfo(context)) SET_AX( context, 0xffff ); break; case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */ GetDrivePB(context, DRIVE_GetCurrentDrive()); break; case 0x29: /* PARSE FILENAME INTO FCB */ INT21_ParseFileNameIntoFCB(context); break; case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */ TRACE("GET DOS DRIVE PARAMETER BLOCK FOR DRIVE %s\n", INT21_DriveName( DL_reg(context))); GetDrivePB(context, DOS_GET_DRIVE( DL_reg(context) ) ); break; case 0x33: /* MULTIPLEXED */ switch (AL_reg(context)) { case 0x00: /* GET CURRENT EXTENDED BREAK STATE */ TRACE("GET CURRENT EXTENDED BREAK STATE\n"); INT21_ReadConfigSys(); SET_DL( context, DOSCONF_config.brk_flag ); break; case 0x01: /* SET EXTENDED BREAK STATE */ TRACE("SET CURRENT EXTENDED BREAK STATE\n"); INT21_ReadConfigSys(); DOSCONF_config.brk_flag = (DL_reg(context) > 0); break; case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/ TRACE("GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE\n"); INT21_ReadConfigSys(); /* ugly coding in order to stay reentrant */ if (DL_reg(context)) { SET_DL( context, DOSCONF_config.brk_flag ); DOSCONF_config.brk_flag = 1; } else { SET_DL( context, DOSCONF_config.brk_flag ); DOSCONF_config.brk_flag = 0; } break; case 0x05: /* GET BOOT DRIVE */ TRACE("GET BOOT DRIVE\n"); SET_DL( context, 3 ); /* c: is Wine's bootdrive (a: is 1)*/ break; case 0x06: /* GET TRUE VERSION NUMBER */ TRACE("GET TRUE VERSION NUMBER\n"); SET_BX( context, (HIWORD(GetVersion16() >> 8)) | (HIWORD(GetVersion16() << 8)) ); SET_DX( context, 0x00 ); break; default: INT_BARF( context, 0x21 ); break; } break; case 0x36: /* GET FREE DISK SPACE */ TRACE("GET FREE DISK SPACE FOR DRIVE %s\n", INT21_DriveName( DL_reg(context))); if (!INT21_GetFreeDiskSpace(context)) SET_AX( context, 0xffff ); break; case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */ TRACE("MKDIR %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); bSetDOSExtendedError = (!CreateDirectory16( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ), NULL)); /* FIXME: CreateDirectory's LastErrors will clash with the ones * used by dos. AH=39 only returns 3 (path not found) and 5 (access * denied), while CreateDirectory return several ones. remap some of * them. -Marcus */ if (bSetDOSExtendedError) { switch (GetLastError()) { case ERROR_ALREADY_EXISTS: case ERROR_FILENAME_EXCED_RANGE: case ERROR_DISK_FULL: SetLastError(ERROR_ACCESS_DENIED); break; default: break; } } break; case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */ TRACE("CHDIR %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); bSetDOSExtendedError = !INT21_ChangeDir(context); break; case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */ TRACE("CREAT flag 0x%02x %s\n",CX_reg(context), (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); bSetDOSExtendedError = INT21_CreateFile( context ); break; case 0x3d: /* "OPEN" - OPEN EXISTING FILE */ TRACE("OPEN mode 0x%02x %s\n",AL_reg(context), (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); OpenExistingFile(context); break; case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */ TRACE("READ from %d to %04lX:%04X for %d byte\n",BX_reg(context), context->SegDs,DX_reg(context),CX_reg(context) ); { LONG result; if (ISV86(context)) result = _hread16( BX_reg(context), CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ), CX_reg(context) ); else result = WIN16_hread( BX_reg(context), MAKESEGPTR( context->SegDs, context->Edx ), CX_reg(context) ); if (result == -1) bSetDOSExtendedError = TRUE; else SET_AX( context, (WORD)result ); } break; case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */ TRACE("LSEEK handle %d offset %ld from %s\n", BX_reg(context), MAKELONG(DX_reg(context),CX_reg(context)), (AL_reg(context)==0)?"start of file":(AL_reg(context)==1)? "current file position":"end of file"); { LONG status = _llseek16( BX_reg(context), MAKELONG(DX_reg(context),CX_reg(context)), AL_reg(context) ); if (status == -1) bSetDOSExtendedError = TRUE; else { SET_AX( context, LOWORD(status) ); SET_DX( context, HIWORD(status) ); } } break; case 0x43: /* FILE ATTRIBUTES */ switch (AL_reg(context)) { case 0x00: TRACE("GET FILE ATTRIBUTES for %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); SET_AX( context, GetFileAttributesA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx))); if (AX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE; else SET_CX( context, AX_reg(context) ); break; case 0x01: TRACE("SET FILE ATTRIBUTES 0x%02x for %s\n", CX_reg(context), (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); bSetDOSExtendedError = (!SetFileAttributesA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx), CX_reg(context) )); break; case 0x02: FIXME("GET COMPRESSED FILE SIZE for %s stub\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); } 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 = CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx);*/ int drive = DOS_GET_DRIVE(BL_reg(context)); FIXME("program tried to write to block device control channel of drive %d:\n",drive); /* for (i=0;iEcx ); break; } case 0x08: /* Check if drive is removable. */ TRACE("IOCTL - CHECK IF BLOCK DEVICE REMOVABLE for drive %s\n", INT21_DriveName( BL_reg(context))); switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) ))) { case DRIVE_UNKNOWN: SetLastError( ERROR_INVALID_DRIVE ); SET_AX( context, ERROR_INVALID_DRIVE ); SET_CFLAG(context); break; case DRIVE_REMOVABLE: SET_AX( context, 0 ); /* removable */ break; default: SET_AX( context, 1 ); /* not removable */ break; } break; case 0x09: /* CHECK IF BLOCK DEVICE REMOTE */ TRACE("IOCTL - CHECK IF BLOCK DEVICE REMOTE for drive %s\n", INT21_DriveName( BL_reg(context))); switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) ))) { case DRIVE_UNKNOWN: SetLastError( ERROR_INVALID_DRIVE ); SET_AX( context, ERROR_INVALID_DRIVE ); SET_CFLAG(context); break; case DRIVE_REMOTE: SET_DX( context, (1<<9) | (1<<12) ); /* remote */ break; default: SET_DX( context, 0 ); /* FIXME: use driver attr here */ break; } break; case 0x0a: /* check if handle (BX) is remote */ TRACE("IOCTL - CHECK IF HANDLE %d IS REMOTE\n",BX_reg(context)); /* returns DX, bit 15 set if remote, bit 14 set if date/time * not set on close */ SET_DX( context, 0 ); break; case 0x0d: TRACE("IOCTL - GENERIC BLOCK DEVICE REQUEST %s\n", INT21_DriveName( BL_reg(context))); bSetDOSExtendedError = ioctlGenericBlkDevReq(context); break; case 0x0e: /* get logical drive mapping */ TRACE("IOCTL - GET LOGICAL DRIVE MAP for drive %s\n", INT21_DriveName( BL_reg(context))); SET_AL( context, 0 ); /* drive has no mapping - FIXME: may be wrong*/ break; case 0x0F: /* Set logical drive mapping */ { int drive; TRACE("IOCTL - SET LOGICAL DRIVE MAP for drive %s\n", INT21_DriveName( BL_reg(context))); drive = DOS_GET_DRIVE ( BL_reg(context) ); if ( ! DRIVE_SetLogicalMapping ( drive, drive+1 ) ) { SET_CFLAG(context); SET_AX( context, 0x000F ); /* invalid drive */ } break; } default: INT_BARF( context, 0x21 ); break; } break; case 0x47: /* "CWD" - GET CURRENT DIRECTORY */ TRACE("CWD - GET CURRENT DIRECTORY for drive %s\n", INT21_DriveName( DL_reg(context))); bSetDOSExtendedError = !INT21_GetCurrentDirectory(context); break; case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */ TRACE("FINDFIRST mask 0x%04x spec %s\n",CX_reg(context), (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); if (!INT21_FindFirst(context)) break; /* fall through */ case 0x4f: /* "FINDNEXT" - FIND NEXT MATCHING FILE */ TRACE("FINDNEXT\n"); if (!INT21_FindNext(context)) { SetLastError( ERROR_NO_MORE_FILES ); SET_AX( context, ERROR_NO_MORE_FILES ); SET_CFLAG(context); } else SET_AX( context, 0 ); /* OK */ break; case 0x5a: /* CREATE TEMPORARY FILE */ TRACE("CREATE TEMPORARY FILE\n"); bSetDOSExtendedError = !INT21_CreateTempFile(context); break; case 0x5b: /* CREATE NEW FILE */ TRACE("CREATE NEW FILE 0x%02x for %s\n", CX_reg(context), (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); SET_AX( context, _lcreat16_uniq( CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx), CX_reg(context) )); bSetDOSExtendedError = (AX_reg(context) != 0); break; case 0x5e: bSetDOSExtendedError = INT21_networkfunc (context); break; case 0x5f: /* NETWORK */ switch (AL_reg(context)) { case 0x07: /* ENABLE DRIVE */ TRACE("ENABLE DRIVE %c:\n",(DL_reg(context)+'A')); if (!DRIVE_Enable( DL_reg(context) )) { SetLastError( ERROR_INVALID_DRIVE ); bSetDOSExtendedError = TRUE; } break; case 0x08: /* DISABLE DRIVE */ TRACE("DISABLE DRIVE %c:\n",(DL_reg(context)+'A')); if (!DRIVE_Disable( DL_reg(context) )) { SetLastError( ERROR_INVALID_DRIVE ); bSetDOSExtendedError = TRUE; } break; default: /* network software not installed */ TRACE("NETWORK function AX=%04x not implemented\n",AX_reg(context)); SetLastError( ER_NoNetwork ); bSetDOSExtendedError = TRUE; break; } break; case 0x60: /* "TRUENAME" - CANONICALIZE FILENAME OR PATH */ TRACE("TRUENAME %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Esi)); { if (!GetFullPathNameA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), 128, CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),NULL)) bSetDOSExtendedError = TRUE; else SET_AX( context, 0 ); } break; case 0x69: /* DISK SERIAL NUMBER */ switch (AL_reg(context)) { case 0x00: TRACE("GET DISK SERIAL NUMBER for drive %s\n", INT21_DriveName(BL_reg(context))); if (!INT21_GetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE; else SET_AX( context, 0 ); break; case 0x01: TRACE("SET DISK SERIAL NUMBER for drive %s\n", INT21_DriveName(BL_reg(context))); if (!INT21_SetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE; else SET_AX( context, 1 ); break; } break; case 0x6C: /* Extended Open/Create*/ TRACE("EXTENDED OPEN/CREATE %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edi)); bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context); break; case 0x71: /* MS-DOS 7 (Windows95) - LONG FILENAME FUNCTIONS */ switch(AL_reg(context)) { case 0x39: /* Create directory */ TRACE("LONG FILENAME - MAKE DIRECTORY %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx)); bSetDOSExtendedError = (!CreateDirectoryA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ), NULL)); /* FIXME: CreateDirectory's LastErrors will clash with the ones * used by dos. AH=39 only returns 3 (path not found) and 5 (access * denied), while CreateDirectory return several ones. remap some of * them. -Marcus */ if (bSetDOSExtendedError) { switch (GetLastError()) { case ERROR_ALREADY_EXISTS: case ERROR_FILENAME_EXCED_RANGE: case ERROR_DISK_FULL: SetLastError(ERROR_ACCESS_DENIED); break; default: break; } } break; case 0x43: /* Get/Set file attributes */ TRACE("LONG FILENAME -EXTENDED GET/SET FILE ATTRIBUTES %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx)); switch (BL_reg(context)) { case 0x00: /* Get file attributes */ TRACE("\tretrieve attributes\n"); SET_CX( context, GetFileAttributesA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx))); if (CX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE; break; case 0x01: TRACE("\tset attributes 0x%04x\n",CX_reg(context)); bSetDOSExtendedError = (!SetFileAttributesA( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx), CX_reg(context) ) ); break; default: FIXME("Unimplemented long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); SET_AL( context, 0 ); break; } break; case 0x47: /* Get current directory */ TRACE(" LONG FILENAME - GET CURRENT DIRECTORY for drive %s\n", INT21_DriveName(DL_reg(context))); bSetDOSExtendedError = !INT21_GetCurrentDirectory(context); break; case 0x4e: /* Find first file */ TRACE(" LONG FILENAME - FIND FIRST MATCHING FILE for %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx)); /* FIXME: use attributes in CX */ SET_AX( context, FindFirstFile16( CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx), (WIN32_FIND_DATAA *)CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi))); if (AX_reg(context) == INVALID_HANDLE_VALUE16) bSetDOSExtendedError = TRUE; break; case 0x4f: /* Find next file */ TRACE("LONG FILENAME - FIND NEXT MATCHING FILE for handle %d\n", BX_reg(context)); if (!FindNextFile16( BX_reg(context), (WIN32_FIND_DATAA *)CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi))) bSetDOSExtendedError = TRUE; break; case 0xa0: { LPCSTR driveroot = (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs,context->Edx); LPSTR buffer = (LPSTR)CTX_SEG_OFF_TO_LIN(context, context->SegEs,context->Edi); DWORD filename_len, flags; TRACE("LONG FILENAME - GET VOLUME INFORMATION for drive having root dir '%s'.\n", driveroot); SET_AX( context, 0 ); if (!GetVolumeInformationA( driveroot, NULL, 0, NULL, &filename_len, &flags, buffer, 8 )) { INT_BARF( context, 0x21 ); SET_CFLAG(context); break; } SET_BX( context, flags | 0x4000 ); /* support for LFN functions */ SET_CX( context, filename_len ); SET_DX( context, MAX_PATH ); /* FIXME: which len if DRIVE_SHORT_NAMES ? */ } break; case 0xa1: /* Find close */ TRACE("LONG FILENAME - FINDCLOSE for handle %d\n", BX_reg(context)); bSetDOSExtendedError = (!FindClose16( BX_reg(context) )); break; case 0x60: switch(CL_reg(context)) { case 0x01: /* Get short filename or path */ if (!GetShortPathNameA ( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi), 67)) bSetDOSExtendedError = TRUE; else SET_AX( context, 0 ); break; case 0x02: /* Get canonical long filename or path */ if (!GetFullPathNameA ( CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi), 128, CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi),NULL)) bSetDOSExtendedError = TRUE; else SET_AX( context, 0 ); break; default: FIXME("Unimplemented long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); SET_AL( context, 0 ); break; } break; case 0x6c: /* Create or open file */ TRACE("LONG FILENAME - CREATE OR OPEN FILE %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Esi)); /* translate Dos 7 action to Dos 6 action */ bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context); break; case 0x3b: /* Change directory */ TRACE("LONG FILENAME - CHANGE DIRECTORY %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx)); if (!SetCurrentDirectoryA(CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx )) ) { SET_CFLAG(context); SET_AL( context, GetLastError() ); } break; default: FIXME("Unimplemented long file name function:\n"); INT_BARF( context, 0x21 ); SET_CFLAG(context); SET_AL( context, 0 ); break; } break; case 0x73: /* MULTIPLEXED: Win95 OSR2/Win98 FAT32 calls */ TRACE("windows95 function AX %04x\n", AX_reg(context)); switch (AL_reg(context)) { case 0x02: /* Get Extended Drive Parameter Block for specific drive */ /* ES:DI points to word with length of data (should be 0x3d) */ { WORD *buffer; struct EDPB *edpb; DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters; char root[] = "A:\\"; buffer = (WORD *)CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Edi); TRACE("Get Extended DPB: linear buffer address is %p\n", buffer); /* validate passed-in buffer lengths */ if ((*buffer != 0x3d) || (context->Ecx != 0x3f)) { WARN("Get Extended DPB: buffer lengths incorrect\n"); WARN("CX = %lx, buffer[0] = %x\n", context->Ecx, *buffer); SET_CFLAG(context); SET_AL( context, 0x18 ); /* bad buffer length */ } /* buffer checks out */ buffer++; /* skip over length word now */ if (FillInDrivePB( DX_reg(context) ) ) { edpb = (struct EDPB *)buffer; /* copy down the old-style DPB portion first */ memcpy(&edpb->dpb, &heap->dpb, sizeof(struct DPB)); /* now fill in the extended entries */ edpb->edpb_flags = 0; edpb->next_edpb = 0; edpb->free_cluster = edpb->free_cluster2 = 0; /* determine free disk space */ *root += DOS_GET_DRIVE( DX_reg(context) ); GetDiskFreeSpaceA( root, &cluster_sectors, §or_bytes, &free_clusters, &total_clusters ); edpb->clusters_free = (free_clusters&0xffff); edpb->clusters_free_hi = free_clusters >> 16; edpb->mirroring_flags = 0; edpb->info_sector = 0xffff; edpb->spare_boot_sector = 0xffff; edpb->first_cluster = 0; edpb->max_cluster = total_clusters; edpb->fat_clusters = 32; /* made-up value */ edpb->root_cluster = 0; RESET_CFLAG(context); /* clear carry */ SET_AX( context, 0 ); } else { SET_AX( context, 0x00ff ); SET_CFLAG(context); } } break; case 0x03: /* Get Extended free space on drive */ case 0x04: /* Set DPB for formatting */ case 0x05: /* extended absolute disk read/write */ FIXME("Unimplemented FAT32 int32 function %04x\n", AX_reg(context)); SET_CFLAG(context); SET_AL( context, 0 ); break; } break; default: INT_BARF( context, 0x21 ); break; } /* END OF SWITCH */ if( bSetDOSExtendedError ) /* set general error condition */ { SET_AX( context, GetLastError() ); SET_CFLAG(context); } }