2 * DOS interrupt 26h handler
4 * Copyright 1997 Andreas Mohr
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
30 #include "wine/debug.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(int);
35 /***********************************************************************
38 * Write raw sectors to a device.
40 BOOL DOSVM_RawWrite(BYTE drive, DWORD begin, DWORD nr_sect, BYTE *dataptr, BOOL fake_success)
42 WCHAR root[] = {'\\','\\','.','\\','A',':',0};
46 TRACE( "abs diskwrite, drive %d, sector %d, "
47 "count %d, buffer %p\n",
48 drive, begin, nr_sect, dataptr );
51 h = CreateFileW(root, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
53 if (h != INVALID_HANDLE_VALUE)
55 SetFilePointer(h, begin * 512, NULL, SEEK_SET );
56 /* FIXME: check errors */
57 WriteFile( h, dataptr, nr_sect * 512, &w, NULL );
60 else if (!fake_success)
67 /**********************************************************************
70 * Handler for int 26h (absolute disk write).
72 void WINAPI DOSVM_Int26Handler( CONTEXT *context )
74 WCHAR drivespec[4] = {'A', ':', '\\', 0};
75 BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Ebx );
79 drivespec[0] += AL_reg( context );
81 if (GetDriveTypeW( drivespec ) == DRIVE_NO_ROOT_DIR ||
82 GetDriveTypeW( drivespec ) == DRIVE_UNKNOWN)
85 SET_AX( context, 0x0201 ); /* unknown unit */
89 if (CX_reg( context ) == 0xffff)
91 begin = *(DWORD *)dataptr;
92 length = *(WORD *)(dataptr + 4);
93 dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
94 *(WORD *)(dataptr + 8),
95 *(DWORD *)(dataptr + 6) );
99 begin = DX_reg( context );
100 length = CX_reg( context );
103 DOSVM_RawWrite( AL_reg( context ), begin, length, dataptr, TRUE );
104 RESET_CFLAG( context );