Make some error cases more specific

[netwatcher] / src / watch_linux.rs

diff --git a/src/watch_linux.rs b/src/watch_linux.rs
index 95ef10638e5c5551ee9743106508031ca0462c6f..e8e1ffc6350236c4a5a3d96ea8378ea4d280f1de 100644 (file)
--- a/src/watch_linux.rs
+++ b/src/watch_linux.rs
@@ -4,9 +4,6 @@ use std::os::fd::OwnedFd;
 use nix::libc::poll;
 use nix::libc::pollfd;
 use nix::libc::POLLIN;
 use nix::libc::poll;
 use nix::libc::pollfd;
 use nix::libc::POLLIN;

-use nix::libc::RTMGRP_IPV4_IFADDR;
-use nix::libc::RTMGRP_IPV6_IFADDR;
-use nix::libc::RTMGRP_LINK;

 use nix::sys::socket::bind;
 use nix::sys::socket::recv;
 use nix::sys::socket::socket;
 use nix::sys::socket::bind;
 use nix::sys::socket::recv;
 use nix::sys::socket::socket;


@@ -22,6 +19,10 @@ use crate::Error;
 use crate::List;
 use crate::Update;
 
 use crate::List;
 use crate::Update;
 

+const RTMGRP_IPV4_IFADDR: u32 = 0x10;
+const RTMGRP_IPV6_IFADDR: u32 = 0x20;
+const RTMGRP_LINK: u32 = 0x01;
+

 pub(crate) struct WatchHandle {
     // Dropping will close the fd which will be detected by poll
     _pipefd: OwnedFd,
 pub(crate) struct WatchHandle {
     // Dropping will close the fd which will be detected by poll
     _pipefd: OwnedFd,


@@ -43,13 +44,14 @@ fn start_watcher_thread<F: FnMut(Update) + Send + 'static>(
         SockFlag::empty(),
         Some(SockProtocol::NetlinkRoute),
     )
         SockFlag::empty(),
         Some(SockProtocol::NetlinkRoute),
     )

-    .map_err(|_| Error::Internal)?; // TODO: proper errors
+    .map_err(|e| Error::CreateSocket(e))?;
+    // TODO: set nonblocking

     let sa_nl = NetlinkAddr::new(
         0,
         (RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR) as u32,
     );
     let sa_nl = NetlinkAddr::new(
         0,
         (RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR) as u32,
     );

-    bind(sockfd.as_raw_fd(), &sa_nl).map_err(|_| Error::Internal)?; // TODO: proper errors
-    let (pipe_rd, pipe_wr) = pipe().map_err(|_| Error::Internal)?;
+    bind(sockfd.as_raw_fd(), &sa_nl).map_err(|e| Error::Bind(e))?;
+    let (pipe_rd, pipe_wr) = pipe().map_err(|e| Error::CreatePipe(e))?;

 
     let mut prev_list = List::default();
     let mut handle_update = move |new_list: List| {
 
     let mut prev_list = List::default();
     let mut handle_update = move |new_list: List| {