059255705b
W32 returns additional bytes containing garbage on pages returning the maximum amount (i.e. 255) of bytes. Ignoring those bytes makes the output being correct. Someone needs to find out why those additional bytes are indicated at all. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22199 a1c6a512-1295-4272-9138-f99709370657
121 lines
4.8 KiB
C
121 lines
4.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: ipodio-win32.c 17847 2008-06-28 18:10:04Z bagder $
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*
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* Copyright (C) 2009 Dave Chapman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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*
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* Based on the getCapsUsingSCSIPassThrough() function from "cddrv.cpp":
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* - http://www.farmanager.com/svn/trunk/unicode_far/cddrv.cpp
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*
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* Copyright (c) 1996 Eugene Roshal
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* Copyright (c) 2000 Far Group
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#include <windows.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <ddk/ntddscsi.h>
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#include "ipodio.h"
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typedef struct _SCSI_PASS_THROUGH_WITH_BUFFERS {
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SCSI_PASS_THROUGH Spt;
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ULONG Filler; /* realign buffers to double word boundary */
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UCHAR SenseBuf[32];
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UCHAR DataBuf[512];
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} SCSI_PASS_THROUGH_WITH_BUFFERS, *PSCSI_PASS_THROUGH_WITH_BUFFERS;
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int ipod_scsi_inquiry(struct ipod_t* ipod, int page_code,
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unsigned char* buf, int bufsize)
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{
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SCSI_PASS_THROUGH_WITH_BUFFERS sptwb;
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ULONG length;
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DWORD returned;
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BOOL status;
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if (bufsize > 255) {
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fprintf(stderr,"[ERR] Invalid bufsize in ipod_scsi_inquiry\n");
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return -1;
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}
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memset(&sptwb, 0, sizeof(sptwb));
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sptwb.Spt.Length = sizeof(SCSI_PASS_THROUGH);
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sptwb.Spt.PathId = 0;
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sptwb.Spt.TargetId = 1;
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sptwb.Spt.Lun = 0;
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sptwb.Spt.CdbLength = 6;
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sptwb.Spt.SenseInfoLength = 32; /* sbuf size */;
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sptwb.Spt.DataIn = SCSI_IOCTL_DATA_IN;
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sptwb.Spt.DataTransferLength = bufsize;
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sptwb.Spt.TimeOutValue = 2; /* 2 seconds */
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sptwb.Spt.DataBufferOffset = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, DataBuf);
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sptwb.Spt.SenseInfoOffset = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, SenseBuf);
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length = offsetof(SCSI_PASS_THROUGH_WITH_BUFFERS, DataBuf) +
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sptwb.Spt.DataTransferLength;
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/* Set cdb info */
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sptwb.Spt.Cdb[0] = 0x12; /* SCSI Inquiry */
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sptwb.Spt.Cdb[1] = 1;
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sptwb.Spt.Cdb[2] = page_code;
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sptwb.Spt.Cdb[3] = 0;
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sptwb.Spt.Cdb[4] = bufsize;
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sptwb.Spt.Cdb[5] = 0;
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status = DeviceIoControl(ipod->dh,
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IOCTL_SCSI_PASS_THROUGH,
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&sptwb,
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sizeof(SCSI_PASS_THROUGH),
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&sptwb,
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length,
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&returned,
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FALSE);
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if (status) {
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/* W32 sometimes returns more bytes with additional garbage.
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* Make sure to not copy that garbage. */
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memcpy(buf, sptwb.DataBuf,
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(DWORD)bufsize >= returned ? returned : (DWORD)bufsize);
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return 0;
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} else {
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return -1;
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}
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}
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