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
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)
44 if ((fd = DRIVE_OpenDevice( drive, O_RDONLY )) != -1)
46 lseek( fd, begin * 512, SEEK_SET );
47 /* FIXME: check errors */
48 write( fd, dataptr, nr_sect * 512 );
51 else if (!fake_success)
58 /**********************************************************************
59 * DOSVM_Int26Handler (WINEDOS16.138)
61 * Handler for int 26h (absolute disk read).
63 void WINAPI DOSVM_Int26Handler( CONTEXT86 *context )
65 WCHAR drivespec[4] = {'A', ':', '\\', 0};
66 BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegDs, context->Ebx );
70 drivespec[0] += AL_reg( context );
72 if (GetDriveTypeW( drivespec ) == DRIVE_NO_ROOT_DIR ||
73 GetDriveTypeW( drivespec ) == DRIVE_UNKNOWN)
76 SET_AX( context, 0x0201 ); /* unknown unit */
80 if (CX_reg( context ) == 0xffff)
82 begin = *(DWORD *)dataptr;
83 length = *(WORD *)(dataptr + 4);
84 dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
85 *(WORD *)(dataptr + 8),
86 *(DWORD *)(dataptr + 6) );
90 begin = DX_reg( context );
91 length = CX_reg( context );
94 TRACE( "abs diskwrite, drive %d, sector %ld, "
95 "count %ld, buffer %p\n",
96 AL_reg( context ), begin, length, dataptr );
98 DOSVM_RawWrite( AL_reg( context ), begin, length, dataptr, TRUE );
99 RESET_CFLAG( context );