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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(int);
34 /***********************************************************************
37 * Write raw sectors to a device.
39 BOOL DOSVM_RawWrite(BYTE drive, DWORD begin, DWORD nr_sect, BYTE *dataptr, BOOL fake_success)
41 WCHAR root[] = {'\\','\\','.','\\','A',':',0};
45 h = CreateFileW(root, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
47 if (h != INVALID_HANDLE_VALUE)
49 SetFilePointer(h, begin * 512, NULL, SEEK_SET );
50 /* FIXME: check errors */
51 WriteFile( h, dataptr, nr_sect * 512, NULL, NULL );
54 else if (!fake_success)
61 /**********************************************************************
62 * DOSVM_Int26Handler (WINEDOS16.138)
64 * Handler for int 26h (absolute disk read).
66 void WINAPI DOSVM_Int26Handler( CONTEXT86 *context )
68 WCHAR drivespec[4] = {'A', ':', '\\', 0};
69 BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Ebx );
73 drivespec[0] += AL_reg( context );
75 if (GetDriveTypeW( drivespec ) == DRIVE_NO_ROOT_DIR ||
76 GetDriveTypeW( drivespec ) == DRIVE_UNKNOWN)
79 SET_AX( context, 0x0201 ); /* unknown unit */
83 if (CX_reg( context ) == 0xffff)
85 begin = *(DWORD *)dataptr;
86 length = *(WORD *)(dataptr + 4);
87 dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
88 *(WORD *)(dataptr + 8),
89 *(DWORD *)(dataptr + 6) );
93 begin = DX_reg( context );
94 length = CX_reg( context );
97 TRACE( "abs diskwrite, drive %d, sector %ld, "
98 "count %ld, buffer %p\n",
99 AL_reg( context ), begin, length, dataptr );
101 DOSVM_RawWrite( AL_reg( context ), begin, length, dataptr, TRUE );
102 RESET_CFLAG( context );