hwclock-rs

hwclock 模块通过内核结构和ioctl提供对硬件时钟当前时间的薄包装，并将其从有效 chrono 数据结构转换过来。

示例

extern crate chrono;
extern crate hwclock;

fn main() {
   use hwclock::HwClockDev;

   let rtc = HwClockDev::open("/dev/rtc0").expect("could not open rtc clock");

   println!("{:?}", rtc);

   let time = rtc.get_time().expect("could not read rtc clock");
   println!("{:?}", time);

   println!("Setting clock ahead 30 seconds");
   let mut ct: chrono::NaiveDateTime = time.into();
   ct += chrono::Duration::seconds(30);

   // convert back to RtcTime and set it
   let ntime = ct.into();
   rtc.set_time(&ntime).expect("could not set rtc clock");

   println!("Rereading...");
   let time2 = rtc.get_time().expect("could not read rtc clock");

   println!("{:?}", time2);
}

lib.rs:

Linux硬件时钟处理

hwclock 模块通过内核结构和ioctl提供对硬件时钟当前时间的薄包装，并将其从有效 chrono 数据结构转换过来。

extern crate chrono;
extern crate hwclock;

fn main() {
    use hwclock::HwClockDev;

    let rtc = HwClockDev::open("/dev/rtc0").expect("could not open rtc clock");

    println!("{:?}", rtc);

    let time = rtc.get_time().expect("could not read rtc clock");
    println!("{:?}", time);

    println!("Setting clock ahead 30 seconds");
    let mut ct: chrono::NaiveDateTime = time.into();
    ct += chrono::Duration::seconds(30);

    // convert back to RtcTime and set it
    let ntime = ct.into();
    rtc.set_time(&ntime).expect("could not set rtc clock");

    println!("Rereading...");
    let time2 = rtc.get_time().expect("could not read rtc clock");

    println!("{:?}", time2);
}