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58d7d4c786
Without this the struct has the wrong size: sizeof() evaluates
to 16 instead of 13. In most cases the bug is hidden by the
fact that guests submits a buffer which is exactly 13 bytes
long, so the padding added by the compiler is simply ignored.
But sometimes guests submit a larger buffer and expect a short
transfer, which does not work properly with the wrong struct
size.
Cc: vintagepc404@protonmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Fixes: a917d384ac ("SCSI TCQ support.")
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210906045523.1259629-1-kraxel@redhat.com>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* USB Mass Storage Device emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licensed under the LGPL.
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*/
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#include "hw/usb.h"
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#include "hw/scsi/scsi.h"
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enum USBMSDMode {
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USB_MSDM_CBW, /* Command Block. */
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USB_MSDM_DATAOUT, /* Transfer data to device. */
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USB_MSDM_DATAIN, /* Transfer data from device. */
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USB_MSDM_CSW /* Command Status. */
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};
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struct QEMU_PACKED usb_msd_csw {
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uint32_t sig;
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uint32_t tag;
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uint32_t residue;
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uint8_t status;
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};
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struct MSDState {
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USBDevice dev;
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enum USBMSDMode mode;
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uint32_t scsi_off;
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uint32_t scsi_len;
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uint32_t data_len;
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struct usb_msd_csw csw;
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SCSIRequest *req;
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SCSIBus bus;
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/* For async completion. */
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USBPacket *packet;
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/* usb-storage only */
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BlockConf conf;
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bool removable;
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bool commandlog;
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SCSIDevice *scsi_dev;
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};
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typedef struct MSDState MSDState;
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#define TYPE_USB_STORAGE "usb-storage-dev"
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DECLARE_INSTANCE_CHECKER(MSDState, USB_STORAGE_DEV,
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TYPE_USB_STORAGE)
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void usb_msd_transfer_data(SCSIRequest *req, uint32_t len);
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void usb_msd_command_complete(SCSIRequest *req, size_t resid);
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void usb_msd_request_cancelled(SCSIRequest *req);
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void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req);
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void usb_msd_handle_reset(USBDevice *dev);
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