Struct UserNs 

pub struct UserNs {
    uid_map: CString,
    gid_map: CString,
}

Everything the first tracee needs to enter its user namespace, prepared before fork so the child does not allocate.

Fields

uid_map: CString

The line written to /proc/self/uid_map.

gid_map: CString

The line written to /proc/self/gid_map.

Implementations

impl UserNs

pub fn identity() -> UserNs

Prepares an identity mapping of the caller’s uid and gid.

Returns

The prepared mapping.

pub fn enter(&self) -> Result<(), i32>

Moves the calling process into a new user namespace with the prepared mapping. Allocation free, for use between fork and execve.

Returns

Ok once the namespace is entered and mapped.

Errors

The errno of the step that failed.

Trait Implementations

impl Clone for UserNs

fn clone(&self) -> UserNs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UserNs

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

Formats the value using the given formatter.