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extern crate libudev;
extern crate libc;
use std::io;
use std::ptr;
use std::thread;
use std::time::Duration;
use std::os::unix::io::{AsRawFd};
use libc::{c_void,c_int,c_short,c_ulong,timespec};
#[repr(C)]
struct pollfd {
fd: c_int,
events: c_short,
revents: c_short,
}
#[repr(C)]
struct sigset_t {
__private: c_void
}
#[allow(non_camel_case_types)]
type nfds_t = c_ulong;
const POLLIN: c_short = 0x0001;
extern "C" {
fn ppoll(fds: *mut pollfd, nfds: nfds_t, timeout_ts: *mut libc::timespec, sigmask: *const sigset_t) -> c_int;
}
fn main() {
let context = libudev::Context::new().unwrap();
monitor(&context).unwrap();
}
fn monitor(context: &libudev::Context) -> io::Result<()> {
let mut monitor = try!(libudev::Monitor::new(&context));
try!(monitor.match_subsystem_devtype("usb", "usb_device"));
let mut socket = try!(monitor.listen());
let mut fds = vec!(pollfd { fd: socket.as_raw_fd(), events: POLLIN, revents: 0 });
loop {
let result = unsafe { ppoll((&mut fds[..]).as_mut_ptr(), fds.len() as nfds_t, ptr::null_mut(), ptr::null()) };
if result < 0 {
return Err(io::Error::last_os_error());
}
let event = match socket.receive_event() {
Some(evt) => evt,
None => {
thread::sleep(Duration::from_millis(10));
continue;
}
};
println!("{}: {} {} (subsystem={}, sysname={}, devtype={})",
event.sequence_number(),
event.event_type(),
event.syspath().to_str().unwrap_or("---"),
event.subsystem().to_str().unwrap_or(""),
event.sysname().to_str().unwrap_or(""),
event.devtype().map_or("", |s| { s.to_str().unwrap_or("") }));
}
}
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