15 changed files with 312 additions and 468 deletions
--- a/.github/actions/build-deb/Dockerfile
+++ b/.github/actions/build-deb/Dockerfile
@ -1,20 +0,0 @@
-FROM ubuntu:16.04
-
-RUN apt-get update \
- && apt-get install -y --no-install-recommends \
-    build-essential \
-    curl \
-    gcc-aarch64-linux-gnu \
-    gcc-arm-linux-gnueabihf \
-    libc6-dev-arm64-cross \
-    libc6-dev-armhf-cross \
-    libc6-dev-i386 \
-    gcc-5-multilib \
-    ruby-ronn \
- && rm -rf /var/cache/dpkg
-
-RUN ln -s asm-generic/ /usr/include/asm
-
-ADD entrypoint.sh /entrypoint.sh
-
-ENTRYPOINT /entrypoint.sh
--- a/.github/actions/build-deb/action.yml
+++ b/.github/actions/build-deb/action.yml
@ -1,11 +0,0 @@
-name: 'build-deb'
-description: 'Create deb packages'
-inputs:
-  rust:
-    description: Rust version
-    default: 'stable'
-runs:
-  using: 'docker'
-  image: 'Dockerfile'
-  env:
-    RUST: ${{ inputs.rust }}
--- a/.github/actions/build-deb/entrypoint.sh
+++ b/.github/actions/build-deb/entrypoint.sh
@ -1,33 +0,0 @@
-#!/bin/bash
-
-set -e
-
-curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST}
-source $HOME/.cargo/env
-
-rustup target add i686-unknown-linux-gnu
-rustup target add armv7-unknown-linux-gnueabihf
-rustup target add aarch64-unknown-linux-gnu
-
-cargo install cargo-deb
-
-VERSION=$(grep -e '^version =' Cargo.toml | sed -e 's/version = "\(.*\)"/\1/')
-
-mkdir dist
-
-cargo deb
-cp target/debian/vpncloud_${VERSION}_amd64.deb dist/vpncloud_${VERSION}_amd64.deb
-
-# i386 deb
-cargo deb --target i686-unknown-linux-gnu
-cp target/i686-unknown-linux-gnu/debian/vpncloud_${VERSION}_i386.deb dist/vpncloud_${VERSION}_i386.deb
-
-# arm7hf deb
-cargo deb --target armv7-unknown-linux-gnueabihf
-cp target/armv7-unknown-linux-gnueabihf/debian/vpncloud_${VERSION}_armhf.deb dist/vpncloud_${VERSION}_armhf.deb
-
-# aarch64 deb
-cargo deb --target aarch64-unknown-linux-gnu
-cp target/aarch64-unknown-linux-gnu/debian/vpncloud_${VERSION}_arm64.deb dist/vpncloud_${VERSION}_arm64.deb
-
-
--- a/.github/actions/build-rpm/Dockerfile
+++ b/.github/actions/build-rpm/Dockerfile
@ -1,10 +0,0 @@
-FROM centos:7
-
-RUN yum groupinstall -y 'Development Tools'
-
-RUN yum-config-manager --add-repo http://springdale.math.ias.edu/data/puias/computational/7/x86_64 \
- && yum install --nogpgcheck -y rubygem-ronn
-
-ADD entrypoint.sh /entrypoint.sh
-
-ENTRYPOINT /entrypoint.sh
--- a/.github/actions/build-rpm/action.yml
+++ b/.github/actions/build-rpm/action.yml
@ -1,11 +0,0 @@
-name: 'build-deb'
-description: 'Create deb packages'
-inputs:
-  rust:
-    description: Rust version
-    default: 'stable'
-runs:
-  using: 'docker'
-  image: 'Dockerfile'
-  env:
-    RUST: ${{ inputs.rust }}
--- a/.github/actions/build-rpm/entrypoint.sh
+++ b/.github/actions/build-rpm/entrypoint.sh
@ -1,19 +0,0 @@
-#!/bin/bash
-
-set -e
-
-curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST}
-source $HOME/.cargo/env
-
-rustup target add i686-unknown-linux-gnu
-rustup target add armv7-unknown-linux-gnueabihf
-
-cargo install cargo-rpm
-
-VERSION=$(grep -e '^version =' Cargo.toml | sed -e 's/version = "\(.*\)"/\1/')
-
-mkdir dist
-
-cargo build --release
-cargo rpm build
-cp target/release/rpmbuild/RPMS/x86_64/vpncloud-${VERSION}-1.x86_64.rpm dist/vpncloud_${VERSION}.x86_64.rpm
--- a/.github/workflows/audit.yml
+++ b/.github/workflows/audit.yml
@ -1,12 +0,0 @@
-name: Security audit
-on:
-  schedule:
-    - cron: '0 0 * * *'
-jobs:
-  audit:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v1
-      - uses: actions-rs/audit-check@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -0,0 +1,19 @@
+name: Build
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install latest nightly
+      run: rustup toolchain install 1.40.0
+    - name: Set default toolchain
+      run: rustup default 1.40.0
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@ -1,50 +0,0 @@
-name: Checks
-on: [push]
-jobs:
-  check:
-    name: Check
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - uses: actions-rs/cargo@v1
-        with:
-          command: check
-  test:
-    name: Test Suite
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - uses: actions-rs/cargo@v1
-        with:
-          command: test
-  coverage:
-    name: Coverage
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v2
-      - name: Install stable toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-      - name: Run cargo-tarpaulin
-        uses: actions-rs/tarpaulin@v0.1
-        with:
-          version: '0.9.0'
-          args: '-o Html -- --test-threads=1'
-      - name: Archive code coverage results
-        uses: actions/upload-artifact@v1
-        with:
-          name: code-coverage-report
-          path: tarpaulin-report.html
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@ -1,45 +0,0 @@
-on:
-  release:
-    types: [created]
-name: Build packages
-jobs:
-  deb:
-    name: "Build deb packages"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Run builder
-        uses: ./.github/actions/build-deb
-        with:
-          rust: '1.40.0'
-      - name: Archive artifacts
-        uses: actions/upload-artifact@v1
-        with:
-          name: packages
-          path: dist
-      - name: Upload artifacts
-        uses: skx/github-action-publish-binaries@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          args: 'dist/*.deb'
-  rpm:
-    name: "Build rpm packages"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Run builder
-        uses: ./.github/actions/build-rpm
-        with:
-          rust: '1.40.0'
-      - name: Archive artifacts
-        uses: actions/upload-artifact@v1
-        with:
-          name: packages
-          path: dist
-      - name: Upload artifacts
-        uses: skx/github-action-publish-binaries@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          args: 'dist/*.rpm'
--- a/Cargo.lock
+++ b/Cargo.lock
@ -2,27 +2,27 @@
 # It is not intended for manual editing.
 [[package]]
 name = "aho-corasick"
-version = "0.7.10"
+version = "0.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "anyhow"
+version = "1.0.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "attohttpc"
-version = "0.10.1"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "http 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "base-x"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@ -35,13 +35,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "bumpalo"
-version = "3.2.1"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "byteorder"
+version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "bytes"
-version = "0.5.4"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "c2-chacha"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]

 [[package]]
 name = "cc"
@ -59,22 +76,17 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "boxfnonce 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "discard"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "docopt"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 "strsim 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@ -88,29 +100,42 @@ name = "fnv"
 version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "getrandom"
 version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
-name = "http"
-version = "0.2.1"
+name = "heck"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "http"
+version = "0.1.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
 "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "itoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "idna"
-version = "0.2.0"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
@ -120,13 +145,21 @@ dependencies = [

 [[package]]
 name = "igd"
-version = "0.10.2"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "attohttpc 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "xmltree 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "attohttpc 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "xmltree 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "iovec"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@ -136,10 +169,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "js-sys"
-version = "0.3.37"
+version = "0.3.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "wasm-bindgen 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@ -149,7 +182,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "libc"
-version = "0.2.69"
+version = "0.2.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@ -172,7 +205,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "memchr"
-version = "2.3.3"
+version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@ -183,7 +216,7 @@ dependencies = [
 "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
 "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@ -195,13 +228,22 @@ dependencies = [
 "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
 "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "nom"
+version = "4.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "percent-encoding"
-version = "2.1.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@ -219,18 +261,23 @@ name = "privdrop"
 version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 "nix 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "proc-macro-hack"
-version = "0.5.15"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]

 [[package]]
 name = "proc-macro2"
-version = "1.0.10"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -238,10 +285,22 @@ dependencies = [

 [[package]]
 name = "quote"
-version = "1.0.3"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@ -250,21 +309,34 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "rand_chacha"
-version = "0.2.2"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "rand_core"
 version = "0.5.1"
@ -281,6 +353,14 @@ dependencies = [
 "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "rdrand"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.1.56"
@ -288,18 +368,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "regex"
-version = "1.3.6"
+version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aho-corasick 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
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--- a/src/beacon.rs
+++ b/src/beacon.rs
@ -321,6 +321,7 @@ impl<TS: TimeSource> BeaconSerializer<TS> {
 #[cfg(test)] use crate::util::MockTimeSource;
 #[cfg(test)] use std::str::FromStr;
 #[cfg(test)] use std::time::Duration;
+#[cfg(test)] use tempfile;

 #[test]
 fn encode() {
--- a/src/main.rs
+++ b/src/main.rs
@ -127,7 +127,7 @@ impl log::Log for DualLogger {
            println!("{} - {}", record.level(), record.args());
            let mut file = self.file.lock().expect("Lock poisoned");
            if let Some(ref mut file) = *file {
-                let time = time::OffsetDateTime::now_local().format("%F %T");
+                let time = time::PrimitiveDateTime::now().format("%F %T");
                writeln!(file, "{} - {} - {}", time, record.level(), record.args())
                    .expect("Failed to write to logfile");
            }
--- a/src/poll/epoll.rs
+++ b/src/poll/epoll.rs
@ -2,6 +2,8 @@
 // Copyright (C) 2015-2019  Dennis Schwerdel
 // This software is licensed under GPL-3 or newer (see LICENSE.md)

+use libc;
+
 use crate::device::Device;
 use std::{io, os::unix::io::RawFd};

--- a/src/util.rs
+++ b/src/util.rs
@ -10,6 +10,8 @@ use std::{

 use super::types::Error;

+#[cfg(target_os = "linux")] use libc;
+
 #[cfg(not(target_os = "linux"))] use time;

 use signal::{trap::Trap, Signal};