Crate ptp_sync

A (probably only Linux-compatible) crate that provides ClockSyncer, which can synchronize on-demand the system-wide real-time (i.e., wall-clock time) clock using a specified PTP clock as the source of truth.

It was originally developed to be used with KVM’s paravirtualized PTP clock as source.

Structs

ClockSyncer

Stores the state of the source PTP clock (i.e., an open file descriptor to it), and provides ClockSyncer::sync to set on-demand the system-wide real-time (i.e., wall-clock time) clock to the time of that source PTP clock.

Enums

Error

Constants

PTP_CLOCK_NAME_LEN

The maximum length of a PTP clock’s name in bytes, based on Linux source code, which equals to 32 bytes.

Functions

find_ptp_kvm

Attempt to find the path to a device node (under /dev/) that corresponds to the KVM PTP clock.

procfs_find_ptp_major

Search procfs(5) for the major number assigned to the PTP driver.

verify_ptp_dev

Returns true if the provided (absolute) path refers to a PTP clock device node (typically under /dev/), or false otherwise.