Enum RtcInterpretation 

pub enum RtcInterpretation {
    Utc,
    LocalTime,
}

How a guest’s userland reads the hardware clock.

This is the whole bug, as a two-variant enum. The hypervisor’s RTC holds UTC in both cases.

Variants

Utc

An ordinary distro: /etc/adjtime says UTC, systemd-timedated agrees, and the wall clock is right. The front.

LocalTime

gunnar as PID 1: no systemd-timedated, no /etc/adjtime, nothing that establishes what the RTC holds — so it is read as local time and the wall clock lands one timezone offset ahead. The appliance.

Implementations

impl RtcInterpretation

pub fn skew_ms(self, zone: &str, unix_secs: i64) -> i64

The skew this interpretation produces, in ms, for a zone and a moment. Utc is zero by construction — not “small”, zero: the front’s measured +468 ms is ordinary clock error and is modelled separately by whoever wants it, because a mock that baked half a second of noise into the correct case would make an exact assertion impossible.

Trait Implementations

impl Clone for RtcInterpretation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RtcInterpretation

impl Debug for RtcInterpretation

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

Formats the value using the given formatter.

impl Eq for RtcInterpretation

impl PartialEq for RtcInterpretation

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for RtcInterpretation