Struct FileHeadTail4 

pub struct FileHeadTail4 {
    pub len: u64,
    pub head: [u8; 4],
    pub tail: [u8; 4],
}

Small probe structure used by higher-level code (e.g. segment validators) to inspect a file’s length and its first/last 4 bytes.

Fields

len: u64

Length of the file in bytes.

head: [u8; 4]

First 4 bytes of the file (zero-filled if the file is shorter).

tail: [u8; 4]

Last 4 bytes of the file (zero-filled if the file is shorter).