The IUSBDeviceFilter interface represents an USB device filter used to perform actions on a group of USB devices. More...

Inheritance diagram for IUSBDeviceFilter:

Public Attributes
attribute wstring	name
	Visible name for this filter. More...

attribute boolean	active
	Whether this filter active or has been temporarily disabled. More...

attribute wstring	vendorId
	Vendor ID filter. More...

attribute wstring	productId
	Product ID filter. More...

attribute wstring	revision
	Product revision number filter. More...

attribute wstring	manufacturer
	Manufacturer filter. More...

attribute wstring	product
	Product filter. More...

attribute wstring	serialNumber
	Serial number filter. More...

attribute wstring	port
	Host USB port filter. More...

attribute wstring	remote
	Remote state filter. More...

attribute unsigned long	maskedInterfaces
	This is an advanced option for hiding one or more USB interfaces from the guest. More...

Detailed Description

The IUSBDeviceFilter interface represents an USB device filter used to perform actions on a group of USB devices.

This type of filters is used by running virtual machines to automatically capture selected USB devices once they are physically attached to the host computer.

A USB device is matched to the given device filter if and only if all attributes of the device match the corresponding attributes of the filter (that is, attributes are joined together using the logical AND operation). On the other hand, all together, filters in the list of filters carry the semantics of the logical OR operation. So if it is desirable to create a match like "this vendor id OR this product id", one needs to create two filters and specify "any match" (see below) for unused attributes.

All filter attributes used for matching are strings. Each string is an expression representing a set of values of the corresponding device attribute, that will match the given filter. Currently, the following filtering expressions are supported:

Interval filters. Used to specify valid intervals for integer device attributes (Vendor ID, Product ID and Revision). The format of the string is:

int:((m)|([m]-[n]))(,(m)|([m]-[n]))*

where m and n are integer numbers, either in octal (starting from 0), hexadecimal (starting from 0x) or decimal (otherwise) form, so that m < n. If m is omitted before a dash (-), the minimum possible integer is assumed; if n is omitted after a dash, the maximum possible integer is assumed.
Boolean filters. Used to specify acceptable values for boolean device attributes. The format of the string is:

true|false|yes|no|0|1
Exact match. Used to specify a single value for the given device attribute. Any string that doesn't start with int: represents the exact match. String device attributes are compared to this string including case of symbols. Integer attributes are first converted to a string (see individual filter attributes) and then compared ignoring case.
Any match. Any value of the corresponding device attribute will match the given filter. An empty or null string is used to construct this type of filtering expressions.

Note: On the Windows host platform, interval filters are not currently available. Also all string filter attributes (manufacturer, product, serialNumber) are ignored, so they behave as any match no matter what string expression is specified.

See also: IUSBDeviceFilters::deviceFilters, IHostUSBDeviceFilter

Interface ID:: {45587218-4289-EF4E-8E6A-E5B07816B631}

Member Data Documentation

◆ name

attribute wstring IUSBDeviceFilter::name

Visible name for this filter.

This name is used to visually distinguish one filter from another, so it can neither be null nor an empty string.

◆ active

attribute boolean IUSBDeviceFilter::active

Whether this filter active or has been temporarily disabled.

◆ vendorId

attribute wstring IUSBDeviceFilter::vendorId

Vendor ID filter.

The string representation for the exact matching has the form XXXX, where X is the hex digit (including leading zeroes).

◆ productId

attribute wstring IUSBDeviceFilter::productId

Product ID filter.

The string representation for the exact matching has the form XXXX, where X is the hex digit (including leading zeroes).

◆ revision

attribute wstring IUSBDeviceFilter::revision

Product revision number filter.

The string representation for the exact matching has the form IIFF, where I is the decimal digit of the integer part of the revision, and F is the decimal digit of its fractional part (including leading and trailing zeros). Note that for interval filters, it's best to use the hexadecimal form, because the revision is stored as a 16 bit packed BCD value; so the expression int:0x0100-0x0199 will match any revision from 1.0 to 1.99.

◆ manufacturer

attribute wstring IUSBDeviceFilter::manufacturer

Manufacturer filter.

◆ product

attribute wstring IUSBDeviceFilter::product

Product filter.

◆ serialNumber

attribute wstring IUSBDeviceFilter::serialNumber

Serial number filter.

◆ port

attribute wstring IUSBDeviceFilter::port

Host USB port filter.

◆ remote

attribute wstring IUSBDeviceFilter::remote

Remote state filter.

Note: This filter makes sense only for machine USB filters, i.e. it is ignored by IHostUSBDeviceFilter objects.

◆ maskedInterfaces

attribute unsigned long IUSBDeviceFilter::maskedInterfaces

This is an advanced option for hiding one or more USB interfaces from the guest.

The value is a bit mask where the bits that are set means the corresponding USB interface should be hidden, masked off if you like. This feature only works on Linux hosts.

Public Attributes