Struct UdevHwdb 

pub struct UdevHwdb { /* private fields */ }

Represents the on-disk hardware database.

Retrieves properties from the hardware database.

Implementations

impl UdevHwdb

pub fn new(udev: Arc<Udev>) -> Result<Self>

Creates a new UdevHwdb.

pub const fn header(&self) -> &TrieHeader

Gets a reference to the TrieHeader.

pub fn get_properties_list_entry( &mut self, modalias: &str, _flags: u32, ) -> Option<&UdevEntry>

Looks up a matching device in the hardware database.

Parameters:

• modalias: modalias string
• flags: (unused), preserved for easier mapping to libudev C API

From the libudev documentation:

The lookup key is a `modalias` string, whose formats are defined for the Linux kernel modules.
Examples are: pci:v00008086d00001C2D*, usb:v04F2pB221*. The first entry
of a list of retrieved properties is returned.

Returns: an optional reference to an UdevEntry.

pub fn query(&mut self, modalias: &str) -> Option<&UdevList>

Looks up a matching device modalias in the hardware database and returns the list of properties.

pub const fn properties_list(&self) -> &UdevList

Gets a reference to the properties list.

pub fn add_property(&mut self, key: &str, value: &str) -> Result<()>

Adds a key-value pair to the property list.

pub fn parse_nodes<'a>( head: &'a TrieHeader, hwdb_buf: &'a [u8], ) -> impl Iterator<Item = TrieEntry> + 'a

Parses all TrieEntry nodes from an in-memory HWDB buffer.