usbip: tools: usbipd: exclude exported devices from exportable device list
usbipd includes exported devices in response to exportable device list. Exclude exported devices from exportable device list to avoid: - import requests for devices that are exported only to fail the request. - revealing devices that are imported by a client to another client. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -175,10 +175,21 @@ static int send_reply_devlist(int connfd)
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struct list_head *j;
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int rc, i;
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/*
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* Exclude devices that are already exported to a client from
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* the exportable device list to avoid:
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* - import requests for devices that are exported only to
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* fail the request.
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* - revealing devices that are imported by a client to
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* another client.
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*/
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reply.ndev = 0;
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/* number of exported devices */
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list_for_each(j, &driver->edev_list) {
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reply.ndev += 1;
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edev = list_entry(j, struct usbip_exported_device, node);
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if (edev->status != SDEV_ST_USED)
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reply.ndev += 1;
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}
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info("exportable devices: %d", reply.ndev);
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@ -197,6 +208,9 @@ static int send_reply_devlist(int connfd)
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list_for_each(j, &driver->edev_list) {
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edev = list_entry(j, struct usbip_exported_device, node);
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if (edev->status == SDEV_ST_USED)
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continue;
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dump_usb_device(&edev->udev);
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memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev));
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usbip_net_pack_usb_device(1, &pdu_udev);
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