Struct SymbolTableEntry 

pub struct SymbolTableEntry {
    pub link_name_offset: u64,
    pub object_header_address: u64,
    pub cache_type: u32,
    pub scratch: [u8; 16],
    /* private fields */
}

A symbol table entry (used in v0/v1 superblock and in SNOD nodes).

When cache_type is 1 (group), the scratch-pad space contains the address of the B-tree and local heap for the group. When cache_type is 2, the scratch-pad contains a symbolic link offset. These are extracted during parsing and cached for convenience.

Fields

link_name_offset: u64

Offset of the link name within the local heap data segment.

object_header_address: u64

Address of the object header for the target object.

cache_type: u32

Cache type: 0 = nothing cached, 1 = group info, 2 = symbolic link.

scratch: [u8; 16]

Raw scratch-pad bytes (always 16 bytes in the file).

Implementations

impl SymbolTableEntry

pub fn parse( cursor: &mut Cursor<'_>, offset_size: u8, _length_size: u8, ) -> Result<Self>

Parse a single symbol table entry from the cursor.

The format is:

• Link name offset (offset_size bytes)
• Object header address (offset_size bytes)
• Cache type (u32 LE)
• Reserved (u32 LE)
• 16 bytes scratch-pad

pub fn btree_address(&self) -> Option<u64>

Address of the B-tree for this group (only valid when cache_type == 1).

pub fn local_heap_address(&self) -> Option<u64>

Address of the local heap for this group (only valid when cache_type == 1).

Trait Implementations

impl Clone for SymbolTableEntry

fn clone(&self) -> SymbolTableEntry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SymbolTableEntry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.