ptools 0.2.23

Utilities for inspecting Linux processes
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//
//   Copyright 2019 Delphix
//
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.
//

use std::env;
use std::fs::File;
use std::os::fd::AsRawFd;
use std::thread;
use std::time::Duration;

use nix::sys::socket::bind;
use nix::sys::socket::socket;
use nix::sys::socket::AddressFamily;
use nix::sys::socket::NetlinkAddr;
use nix::sys::socket::SockFlag;
use nix::sys::socket::SockProtocol;
use nix::sys::socket::SockType;

fn main() {
    let signal_path =
        env::var("PTOOLS_TEST_READY_FILE").expect("PTOOLS_TEST_READY_FILE must be set");

    let fd = socket(
        AddressFamily::Netlink,
        SockType::Datagram,
        SockFlag::empty(),
        Some(SockProtocol::NetlinkRoute),
    )
    .unwrap();

    bind(fd.as_raw_fd(), &NetlinkAddr::new(0, 0)).unwrap();

    // Signal parent process (the test process) that this process is ready to be observed by the
    // ptool being tested.
    File::create(signal_path).unwrap();

    // Wait for the parent to finish running the ptool and then kill us.
    loop {
        thread::sleep(Duration::from_millis(100));
    }
}