/* * DOS interrupt 26h handler * * Copyright 1997 Andreas Mohr * * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #include "dosexe.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(int); /*********************************************************************** * DOSVM_RawWrite * * Write raw sectors to a device. */ BOOL DOSVM_RawWrite(BYTE drive, DWORD begin, DWORD nr_sect, BYTE *dataptr, BOOL fake_success) { WCHAR root[] = {'\\','\\','.','\\','A',':',0}; HANDLE h; DWORD w; TRACE( "abs diskwrite, drive %d, sector %d, " "count %d, buffer %p\n", drive, begin, nr_sect, dataptr ); root[4] += drive; h = CreateFileW(root, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); if (h != INVALID_HANDLE_VALUE) { SetFilePointer(h, begin * 512, NULL, SEEK_SET ); /* FIXME: check errors */ WriteFile( h, dataptr, nr_sect * 512, &w, NULL ); CloseHandle( h ); } else if (!fake_success) return FALSE; return TRUE; } /********************************************************************** * DOSVM_Int26Handler * * Handler for int 26h (absolute disk write). */ void WINAPI DOSVM_Int26Handler( CONTEXT *context ) { WCHAR drivespec[] = {'A', ':', '\\', 0}; BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Ebx ); DWORD begin; DWORD length; drivespec[0] += AL_reg( context ); if (GetDriveTypeW( drivespec ) == DRIVE_NO_ROOT_DIR || GetDriveTypeW( drivespec ) == DRIVE_UNKNOWN) { SET_CFLAG( context ); SET_AX( context, 0x0201 ); /* unknown unit */ return; } if (CX_reg( context ) == 0xffff) { begin = *(DWORD *)dataptr; length = *(WORD *)(dataptr + 4); dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context, *(WORD *)(dataptr + 8), *(DWORD *)(dataptr + 6) ); } else { begin = DX_reg( context ); length = CX_reg( context ); } DOSVM_RawWrite( AL_reg( context ), begin, length, dataptr, TRUE ); RESET_CFLAG( context ); }