Struct nc::types::user_desc_t

#[repr(C)]
pub struct user_desc_t {
    pub entry_number: u32,
    pub base_addr: u32,
    pub limit: u32,
    pub seg_32bit: u8,
    pub contents: u8,
    pub read_exec_only: u8,
    pub limit_in_pages: u8,
    pub seg_not_present: u8,
    pub useable: u8,
    pub lm: u8,
}

Note on 64bit base and limit is ignored and you cannot set DS/ES/CS not to the default values if you still want to do syscalls. This call is more for 32bit mode therefore.

Fields

entry_number: u32

base_addr: u32

limit: u32

seg_32bit: u8

contents: u8

read_exec_only: u8

limit_in_pages: u8

seg_not_present: u8

useable: u8

lm: u8

Because this bit is not present in 32-bit user code, user programs can pass uninitialized values here. Therefore, in any context in which a user_desc comes from a 32-bit program, the kernel must act as though lm == 0, regardless of the actual value.

Trait Implementations

impl Clone for user_desc_t

fn clone(&self) -> user_desc_t

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for user_desc_t

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

Formats the value using the given formatter.

impl Default for user_desc_t

fn default() -> user_desc_t

Returns the “default value” for a type.

impl Copy for user_desc_t