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[CDFS] Use IOCTL_CDROM_READ_TOC instead of IOCTL_CDROM_GET_LAST_SESSION, which is not always available
svn path=/trunk/; revision=64106
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37ff67c8fc
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1 changed files with 5 additions and 12 deletions
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@ -201,14 +201,7 @@ CdfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
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ULONG Size;
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ULONG Offset;
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ULONG i;
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struct
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{
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UCHAR Length[2];
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UCHAR FirstSession;
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UCHAR LastSession;
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TRACK_DATA TrackData;
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}
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Toc;
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CDROM_TOC Toc;
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DPRINT("CdfsGetVolumeData\n");
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@ -219,7 +212,7 @@ CdfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
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Size = sizeof(Toc);
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Status = CdfsDeviceIoControl(DeviceObject,
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IOCTL_CDROM_GET_LAST_SESSION,
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IOCTL_CDROM_READ_TOC,
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NULL,
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0,
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&Toc,
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@ -231,13 +224,13 @@ CdfsGetVolumeData(PDEVICE_OBJECT DeviceObject,
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return Status;
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}
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DPRINT("FirstSession %u, LastSession %u, FirstTrack %u\n",
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Toc.FirstSession, Toc.LastSession, Toc.TrackData.TrackNumber);
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DPRINT("FirstTrack %u, LastTrack %u, TrackNumber %u\n",
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Toc.FirstTrack, Toc.LastTrack, Toc.TrackData[0].TrackNumber);
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Offset = 0;
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for (i = 0; i < 4; i++)
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{
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Offset = (Offset << 8) + Toc.TrackData.Address[i];
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Offset = (Offset << 8) + Toc.TrackData[0].Address[i];
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}
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CdInfo->VolumeOffset = Offset;
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