Update libc crate to 0.2.30

Import subrepo libc/:libc at 3520512a8c9cb55661910318a6fb169a75c02a59

29 files changed, 335 insertions, 164 deletions

diff --git a/libc/ci/android-install-ndk.sh b/libc/ci/android-install-ndk.sh
index 75bcd20..873f6c5 100644
--- a/libc/ci/android-install-ndk.sh
+++ b/libc/ci/android-install-ndk.sh
@@ -11,8 +11,8 @@
 
 set -ex
 
-curl -O https://dl.google.com/android/repository/android-ndk-r13b-linux-x86_64.zip
-unzip -q android-ndk-r13b-linux-x86_64.zip
+curl -O https://dl.google.com/android/repository/android-ndk-r15b-linux-x86_64.zip
+unzip -q android-ndk-r15b-linux-x86_64.zip
 
 case "$1" in
   aarch64)
@@ -28,9 +28,10 @@ case "$1" in
     ;;
 esac;
 
-android-ndk-r13b/build/tools/make_standalone_toolchain.py \
+android-ndk-r15b/build/tools/make_standalone_toolchain.py \
+        --unified-headers \
         --install-dir /android/ndk-$1 \
         --arch $arch \
         --api 24
 
-rm -rf ./android-ndk-r13b-linux-x86_64.zip ./android-ndk-r13b
+rm -rf ./android-ndk-r15b-linux-x86_64.zip ./android-ndk-r15b
diff --git a/libc/ci/docker/aarch64-linux-android/Dockerfile b/libc/ci/docker/aarch64-linux-android/Dockerfile
index 7ad8492..345540a 100644
--- a/libc/ci/docker/aarch64-linux-android/Dockerfile
+++ b/libc/ci/docker/aarch64-linux-android/Dockerfile
@@ -29,4 +29,17 @@ RUN chmod 755 /android/sdk/tools/* /android/sdk/tools/qemu/linux-x86_64/*
 
 ENV PATH=$PATH:/rust/bin \
     CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER=aarch64-linux-android-gcc \
+    CARGO_TARGET_AARCH64_LINUX_ANDROID_RUNNER=/tmp/runtest \
     HOME=/tmp
+
+ADD runtest-android.rs /tmp/runtest.rs
+ENTRYPOINT [ \
+  "bash", \
+  "-c", \
+  # set SHELL so android can detect a 64bits system, see
+  # http://stackoverflow.com/a/41789144
+  "SHELL=/bin/dash emulator @aarch64 -no-window & \
+   rustc /tmp/runtest.rs -o /tmp/runtest && \
+   exec \"$@\"", \
+  "--" \
+]
diff --git a/libc/ci/docker/aarch64-unknown-linux-gnu/Dockerfile b/libc/ci/docker/aarch64-unknown-linux-gnu/Dockerfile
index 2ba69e1..18214a3 100644
--- a/libc/ci/docker/aarch64-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/aarch64-unknown-linux-gnu/Dockerfile
@@ -1,7 +1,7 @@
-FROM ubuntu:16.10
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+FROM ubuntu:17.10
+RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc libc6-dev ca-certificates \
   gcc-aarch64-linux-gnu libc6-dev-arm64-cross qemu-user
 ENV CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc \
+    CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUNNER="qemu-aarch64 -L /usr/aarch64-linux-gnu" \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/arm-linux-androideabi/Dockerfile b/libc/ci/docker/arm-linux-androideabi/Dockerfile
index 0549414..554f078 100644
--- a/libc/ci/docker/arm-linux-androideabi/Dockerfile
+++ b/libc/ci/docker/arm-linux-androideabi/Dockerfile
@@ -29,4 +29,17 @@ RUN chmod 755 /android/sdk/tools/* /android/sdk/tools/qemu/linux-x86_64/*
 
 ENV PATH=$PATH:/rust/bin \
     CARGO_TARGET_ARM_LINUX_ANDROIDEABI_LINKER=arm-linux-androideabi-gcc \
+    CARGO_TARGET_ARM_LINUX_ANDROIDEABI_RUNNER=/tmp/runtest \
     HOME=/tmp
+
+ADD runtest-android.rs /tmp/runtest.rs
+ENTRYPOINT [ \
+  "bash", \
+  "-c", \
+  # set SHELL so android can detect a 64bits system, see
+  # http://stackoverflow.com/a/41789144
+  "SHELL=/bin/dash emulator @arm -no-window & \
+   rustc /tmp/runtest.rs -o /tmp/runtest && \
+   exec \"$@\"", \
+  "--" \
+]
diff --git a/libc/ci/docker/arm-unknown-linux-gnueabihf/Dockerfile b/libc/ci/docker/arm-unknown-linux-gnueabihf/Dockerfile
index 3824c04..9fe71dc 100644
--- a/libc/ci/docker/arm-unknown-linux-gnueabihf/Dockerfile
+++ b/libc/ci/docker/arm-unknown-linux-gnueabihf/Dockerfile
@@ -1,7 +1,7 @@
-FROM ubuntu:16.10
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+FROM ubuntu:17.10
+RUN apt-get update && apt-get install -y --no-install-recommends \
   gcc libc6-dev ca-certificates \
   gcc-arm-linux-gnueabihf libc6-dev-armhf-cross qemu-user
 ENV CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc \
+    CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_RUNNER="qemu-arm -L /usr/arm-linux-gnueabihf" \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/asmjs-unknown-emscripten/Dockerfile b/libc/ci/docker/asmjs-unknown-emscripten/Dockerfile
new file mode 100644
index 0000000..3088fc5
--- /dev/null
+++ b/libc/ci/docker/asmjs-unknown-emscripten/Dockerfile
@@ -0,0 +1,20 @@
+FROM ubuntu:16.04
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    ca-certificates \
+    curl \
+    gcc \
+    git \
+    libc6-dev \
+    python \
+    xz-utils
+
+COPY emscripten.sh /
+RUN bash /emscripten.sh
+
+ENV PATH=$PATH:/rust/bin \
+    CARGO_TARGET_ASMJS_UNKNOWN_EMSCRIPTEN_RUNNER=node
+
+COPY emscripten-entry.sh /
+ENTRYPOINT ["/emscripten-entry.sh"]
diff --git a/libc/ci/docker/i686-linux-android/Dockerfile b/libc/ci/docker/i686-linux-android/Dockerfile
index bee9043..7671f78 100644
--- a/libc/ci/docker/i686-linux-android/Dockerfile
+++ b/libc/ci/docker/i686-linux-android/Dockerfile
@@ -29,4 +29,17 @@ RUN chmod 755 /android/sdk/tools/* /android/sdk/tools/qemu/linux-x86_64/*
 
 ENV PATH=$PATH:/rust/bin \
     CARGO_TARGET_I686_LINUX_ANDROID_LINKER=i686-linux-android-gcc \
+    CARGO_TARGET_I686_LINUX_ANDROID_RUNNER=/tmp/runtest \
     HOME=/tmp
+
+ADD runtest-android.rs /tmp/runtest.rs
+ENTRYPOINT [ \
+  "bash", \
+  "-c", \
+  # set SHELL so android can detect a 64bits system, see
+  # http://stackoverflow.com/a/41789144
+  "SHELL=/bin/dash emulator @i686 -no-window -no-accel & \
+   rustc /tmp/runtest.rs -o /tmp/runtest && \
+   exec \"$@\"", \
+  "--" \
+]
diff --git a/libc/ci/docker/i686-unknown-linux-gnu/Dockerfile b/libc/ci/docker/i686-unknown-linux-gnu/Dockerfile
index c149d84..a5a4b8e 100644
--- a/libc/ci/docker/i686-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/i686-unknown-linux-gnu/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \
   gcc-multilib libc6-dev ca-certificates
diff --git a/libc/ci/docker/i686-unknown-linux-musl/Dockerfile b/libc/ci/docker/i686-unknown-linux-musl/Dockerfile
index bdc2272..3adb920 100644
--- a/libc/ci/docker/i686-unknown-linux-musl/Dockerfile
+++ b/libc/ci/docker/i686-unknown-linux-musl/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
 RUN dpkg --add-architecture i386
 RUN apt-get update
@@ -18,6 +18,13 @@ RUN curl https://www.musl-libc.org/releases/musl-1.1.15.tar.gz | \
     CC=gcc CFLAGS=-m32 ./configure --prefix=/musl-i686 --disable-shared --target=i686 && \
     make CROSS_COMPILE= install -j4 && \
     cd .. && \
-    rm -rf musl-1.1.15
+    rm -rf musl-1.1.15 && \
+# Install linux kernel headers sanitized for use with musl
+    curl -L  https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-5.tar.gz | \
+    tar xzf - && \
+    cd kernel-headers-3.12.6-5 && \
+    make ARCH=i386 prefix=/musl-i686 install -j4 && \
+    cd .. && \
+    rm -rf kernel-headers-3.12.6-5
 ENV PATH=$PATH:/musl-i686/bin:/rust/bin \
     CC_i686_unknown_linux_musl=musl-gcc
diff --git a/libc/ci/docker/mips-unknown-linux-gnu/Dockerfile b/libc/ci/docker/mips-unknown-linux-gnu/Dockerfile
index eea1f65..c66abd4 100644
--- a/libc/ci/docker/mips-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/mips-unknown-linux-gnu/Dockerfile
@@ -1,10 +1,10 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates \
         gcc-mips-linux-gnu libc6-dev-mips-cross \
         qemu-system-mips
 
 ENV CARGO_TARGET_MIPS_UNKNOWN_LINUX_GNU_LINKER=mips-linux-gnu-gcc \
+    CARGO_TARGET_MIPS_UNKNOWN_LINUX_GNU_RUNNER="qemu-mips -L /usr/mips-linux-gnu" \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/mips-unknown-linux-musl/Dockerfile b/libc/ci/docker/mips-unknown-linux-musl/Dockerfile
index cbc41c2..3fb0eeb 100644
--- a/libc/ci/docker/mips-unknown-linux-musl/Dockerfile
+++ b/libc/ci/docker/mips-unknown-linux-musl/Dockerfile
@@ -1,7 +1,6 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates qemu-system-mips curl \
         bzip2
 
@@ -14,4 +13,5 @@ RUN curl -L https://s3.amazonaws.com/rust-lang-ci/libc/OpenWrt-SDK-ar71xx-generi
 
 ENV PATH=$PATH:/rust/bin:/toolchain/staging_dir/toolchain-mips_34kc_gcc-5.3.0_musl-1.1.15/bin \
     CC_mips_unknown_linux_musl=mips-openwrt-linux-gcc \
-    CARGO_TARGET_MIPS_UNKNOWN_LINUX_MUSL_LINKER=mips-openwrt-linux-gcc
+    CARGO_TARGET_MIPS_UNKNOWN_LINUX_MUSL_LINKER=mips-openwrt-linux-gcc \
+    CARGO_TARGET_MIPS_UNKNOWN_LINUX_MUSL_RUNNER="qemu-mips -L /toolchain/staging_dir/toolchain-mips_34kc_gcc-5.3.0_musl-1.1.15"
diff --git a/libc/ci/docker/mips64-unknown-linux-gnuabi64/Dockerfile b/libc/ci/docker/mips64-unknown-linux-gnuabi64/Dockerfile
index 2eb5de2..b9921fc 100644
--- a/libc/ci/docker/mips64-unknown-linux-gnuabi64/Dockerfile
+++ b/libc/ci/docker/mips64-unknown-linux-gnuabi64/Dockerfile
@@ -1,11 +1,11 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates \
         gcc-mips64-linux-gnuabi64 libc6-dev-mips64-cross \
         qemu-system-mips64
 
 ENV CARGO_TARGET_MIPS64_UNKNOWN_LINUX_GNUABI64_LINKER=mips64-linux-gnuabi64-gcc \
+    CARGO_TARGET_MIPS64_UNKNOWN_LINUX_GNUABI64_RUNNER="qemu-mips64 -L /usr/mips64-linux-gnuabi64" \
     CC_mips64_unknown_linux_gnuabi64=mips64-linux-gnuabi64-gcc \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/mipsel-unknown-linux-musl/Dockerfile b/libc/ci/docker/mipsel-unknown-linux-musl/Dockerfile
index 4c7ee8b..a2c3bc4 100644
--- a/libc/ci/docker/mipsel-unknown-linux-musl/Dockerfile
+++ b/libc/ci/docker/mipsel-unknown-linux-musl/Dockerfile
@@ -1,7 +1,6 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates qemu-system-mips curl \
         bzip2
 
@@ -14,4 +13,5 @@ RUN curl -L https://s3.amazonaws.com/rust-lang-ci/libc/OpenWrt-Toolchain-malta-l
 
 ENV PATH=$PATH:/rust/bin:/toolchain/bin \
     CC_mipsel_unknown_linux_musl=mipsel-openwrt-linux-gcc \
-    CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_MUSL_LINKER=mipsel-openwrt-linux-gcc
+    CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_MUSL_LINKER=mipsel-openwrt-linux-gcc \
+    CARGO_TARGET_MIPSEL_UNKNOWN_LINUX_MUSL_RUNNER="qemu-mipsel -L /toolchain"
diff --git a/libc/ci/docker/powerpc-unknown-linux-gnu/Dockerfile b/libc/ci/docker/powerpc-unknown-linux-gnu/Dockerfile
index d9d7db0..106ada4 100644
--- a/libc/ci/docker/powerpc-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/powerpc-unknown-linux-gnu/Dockerfile
@@ -1,10 +1,10 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates \
         gcc-powerpc-linux-gnu libc6-dev-powerpc-cross \
         qemu-system-ppc
 
 ENV CARGO_TARGET_POWERPC_UNKNOWN_LINUX_GNU_LINKER=powerpc-linux-gnu-gcc \
+    CARGO_TARGET_POWERPC_UNKNOWN_LINUX_GNU_RUNNER="qemu-ppc -L /usr/powerpc-linux-gnu" \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/powerpc64-unknown-linux-gnu/Dockerfile b/libc/ci/docker/powerpc64-unknown-linux-gnu/Dockerfile
index df0e605..a6ab66a 100644
--- a/libc/ci/docker/powerpc64-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/powerpc64-unknown-linux-gnu/Dockerfile
@@ -1,11 +1,11 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libc6-dev qemu-user ca-certificates \
         gcc-powerpc64-linux-gnu libc6-dev-ppc64-cross \
         qemu-system-ppc
 
 ENV CARGO_TARGET_POWERPC64_UNKNOWN_LINUX_GNU_LINKER=powerpc64-linux-gnu-gcc \
+    CARGO_TARGET_POWERPC64_UNKNOWN_LINUX_GNU_RUNNER="qemu-ppc64 -L /usr/powerpc64-linux-gnu" \
     CC=powerpc64-linux-gnu-gcc \
     PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/s390x-unknown-linux-gnu/Dockerfile b/libc/ci/docker/s390x-unknown-linux-gnu/Dockerfile
new file mode 100644
index 0000000..49a277d
--- /dev/null
+++ b/libc/ci/docker/s390x-unknown-linux-gnu/Dockerfile
@@ -0,0 +1,12 @@
+FROM ubuntu:17.10
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        gcc libc6-dev qemu-user ca-certificates \
+        gcc-s390x-linux-gnu libc6-dev-s390x-cross
+
+ENV CARGO_TARGET_S390X_UNKNOWN_LINUX_GNU_LINKER=s390x-linux-gnu-gcc \
+    # TODO: in theory we should execute this, but qemu segfaults immediately :(
+    # CARGO_TARGET_S390X_UNKNOWN_LINUX_GNU_RUNNER="qemu-s390x -L /usr/s390x-linux-gnu" \
+    CARGO_TARGET_S390X_UNKNOWN_LINUX_GNU_RUNNER=true \
+    CC_s390x_unknown_linux_gnu=s390x-linux-gnu-gcc \
+    PATH=$PATH:/rust/bin
diff --git a/libc/ci/docker/wasm32-unknown-emscripten/Dockerfile b/libc/ci/docker/wasm32-unknown-emscripten/Dockerfile
new file mode 100644
index 0000000..59bf7d9
--- /dev/null
+++ b/libc/ci/docker/wasm32-unknown-emscripten/Dockerfile
@@ -0,0 +1,21 @@
+FROM ubuntu:16.04
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    ca-certificates \
+    curl \
+    gcc \
+    git \
+    libc6-dev \
+    python \
+    xz-utils
+
+COPY emscripten.sh /
+RUN bash /emscripten.sh
+
+ENV PATH=$PATH:/rust/bin \
+    CARGO_TARGET_WASM32_UNKNOWN_EMSCRIPTEN_RUNNER=node-wrapper.sh
+
+COPY emscripten-entry.sh /
+COPY docker/wasm32-unknown-emscripten/node-wrapper.sh /usr/local/bin/node-wrapper.sh
+ENTRYPOINT ["/emscripten-entry.sh"]
diff --git a/libc/ci/docker/wasm32-unknown-emscripten/node-wrapper.sh b/libc/ci/docker/wasm32-unknown-emscripten/node-wrapper.sh
new file mode 100755
index 0000000..b1936f0
--- /dev/null
+++ b/libc/ci/docker/wasm32-unknown-emscripten/node-wrapper.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -e
+
+me=$1
+shift
+dir=$(dirname $me)
+file=$(basename $me)
+
+cd $dir
+exec node $file "$@"
diff --git a/libc/ci/docker/x86_64-linux-android/Dockerfile b/libc/ci/docker/x86_64-linux-android/Dockerfile
index dfc0c83..0cfbc48 100644
--- a/libc/ci/docker/x86_64-linux-android/Dockerfile
+++ b/libc/ci/docker/x86_64-linux-android/Dockerfile
@@ -17,7 +17,7 @@ RUN sh /android/android-install-ndk.sh $ANDROID_ARCH
 # We do not run x86_64-linux-android tests on an android emulator.
 # See ci/android-sysimage.sh for informations about how tests are run.
 COPY android-sysimage.sh /android/
-RUN bash /android/android-sysimage.sh x86_64 x86_64-21_r04.zip
+RUN bash /android/android-sysimage.sh x86_64 x86_64-24_r07.zip
 
 ENV PATH=$PATH:/rust/bin:/android/ndk-$ANDROID_ARCH/bin \
     CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER=x86_64-linux-android-gcc \
diff --git a/libc/ci/docker/x86_64-rumprun-netbsd/Dockerfile b/libc/ci/docker/x86_64-rumprun-netbsd/Dockerfile
index 129771e..a486d05 100644
--- a/libc/ci/docker/x86_64-rumprun-netbsd/Dockerfile
+++ b/libc/ci/docker/x86_64-rumprun-netbsd/Dockerfile
@@ -3,4 +3,8 @@ USER root
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \
   qemu
-ENV PATH=$PATH:/rust/bin
+ENV PATH=$PATH:/rust/bin \
+    CARGO_TARGET_X86_64_RUMPRUN_NETBSD_RUNNER=/tmp/runtest
+
+ADD docker/x86_64-rumprun-netbsd/runtest.rs /tmp/
+ENTRYPOINT ["sh", "-c", "rustc /tmp/runtest.rs -o /tmp/runtest && exec \"$@\"", "--"]
diff --git a/libc/ci/docker/x86_64-rumprun-netbsd/runtest.rs b/libc/ci/docker/x86_64-rumprun-netbsd/runtest.rs
new file mode 100644
index 0000000..94b5946
--- /dev/null
+++ b/libc/ci/docker/x86_64-rumprun-netbsd/runtest.rs
@@ -0,0 +1,54 @@
+use std::env;
+use std::process::{Command, Stdio};
+use std::sync::mpsc;
+use std::thread;
+use std::time::Duration;
+use std::io::{BufRead, BufReader, Read};
+
+fn main() {
+    assert_eq!(env::args().len(), 2);
+
+    let status = Command::new("rumprun-bake")
+        .arg("hw_virtio")
+        .arg("/tmp/libc-test.img")
+        .arg(env::args().nth(1).unwrap())
+        .status()
+        .expect("failed to run rumprun-bake");
+    assert!(status.success());
+
+    let mut child = Command::new("qemu-system-x86_64")
+        .arg("-nographic")
+        .arg("-vga").arg("none")
+        .arg("-m").arg("64")
+        .arg("-kernel").arg("/tmp/libc-test.img")
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()
+        .expect("failed to spawn qemu");
+
+    let mut stdout = child.stdout.take().unwrap();
+    let mut stderr = child.stderr.take().unwrap();
+    let (tx, rx) = mpsc::channel();
+    let tx2 = tx.clone();
+    let t1 = thread::spawn(move || find_ok(&mut stdout, tx));
+    let t2 = thread::spawn(move || find_ok(&mut stderr, tx2));
+
+    let res = rx.recv_timeout(Duration::new(5, 0));
+    child.kill().unwrap();
+    t1.join().unwrap();
+    t2.join().unwrap();
+
+    if res.is_err() {
+        panic!("didn't find success");
+    }
+}
+
+fn find_ok(input: &mut Read, tx: mpsc::Sender<()>) {
+    for line in BufReader::new(input).lines() {
+        let line = line.unwrap();
+        println!("{}", line);
+        if line.starts_with("PASSED ") && line.contains(" tests") {
+            tx.send(()).unwrap();
+        }
+    }
+}
diff --git a/libc/ci/docker/x86_64-unknown-linux-gnu/Dockerfile b/libc/ci/docker/x86_64-unknown-linux-gnu/Dockerfile
index 4af3f83..ca60ede 100644
--- a/libc/ci/docker/x86_64-unknown-linux-gnu/Dockerfile
+++ b/libc/ci/docker/x86_64-unknown-linux-gnu/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \
   gcc libc6-dev ca-certificates
diff --git a/libc/ci/docker/x86_64-unknown-linux-musl/Dockerfile b/libc/ci/docker/x86_64-unknown-linux-musl/Dockerfile
index 9c24999..d9d6511 100644
--- a/libc/ci/docker/x86_64-unknown-linux-musl/Dockerfile
+++ b/libc/ci/docker/x86_64-unknown-linux-musl/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.10
+FROM ubuntu:17.10
 
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends \
@@ -9,5 +9,12 @@ RUN curl https://www.musl-libc.org/releases/musl-1.1.15.tar.gz | \
     ./configure --prefix=/musl-x86_64 && \
     make install -j4 && \
     cd .. && \
-    rm -rf musl-1.1.15
+    rm -rf musl-1.1.15 && \
+# Install linux kernel headers sanitized for use with musl
+    curl -L  https://github.com/sabotage-linux/kernel-headers/archive/v3.12.6-5.tar.gz | \
+    tar xzf - && \
+    cd kernel-headers-3.12.6-5 && \
+    make ARCH=x86_64 prefix=/musl-x86_64 install -j4 && \
+    cd .. && \
+    rm -rf kernel-headers-3.12.6-5
 ENV PATH=$PATH:/musl-x86_64/bin:/rust/bin
diff --git a/libc/ci/docker/x86_64-unknown-openbsd/Dockerfile b/libc/ci/docker/x86_64-unknown-openbsd/Dockerfile
deleted file mode 100644
index 518baf8..0000000
--- a/libc/ci/docker/x86_64-unknown-openbsd/Dockerfile
+++ /dev/null
@@ -1,8 +0,0 @@
-FROM ubuntu:16.10
-
-RUN apt-get update
-RUN apt-get install -y --no-install-recommends \
-  gcc libc6-dev qemu curl ca-certificates \
-  genext2fs
-ENV PATH=$PATH:/rust/bin \
-    QEMU=2016-11-06/openbsd-6.0-without-pkgs.qcow2
diff --git a/libc/ci/emscripten-entry.sh b/libc/ci/emscripten-entry.sh
new file mode 100755
index 0000000..acaebfe
--- /dev/null
+++ b/libc/ci/emscripten-entry.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+source /emsdk-portable/emsdk_env.sh &> /dev/null
+
+# emsdk-portable provides a node binary, but we need version 8 to run wasm
+export PATH="/node-v8.0.0-linux-x64/bin:$PATH"
+
+exec "$@"
diff --git a/libc/ci/emscripten.sh b/libc/ci/emscripten.sh
new file mode 100644
index 0000000..d802585
--- /dev/null
+++ b/libc/ci/emscripten.sh
@@ -0,0 +1,54 @@
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  rm -f /tmp/build.log
+  set -x
+}
+
+cd /
+curl -L https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz | \
+    tar -xz
+
+cd /emsdk-portable
+./emsdk update
+hide_output ./emsdk install sdk-1.37.20-64bit
+./emsdk activate sdk-1.37.20-64bit
+
+# Compile and cache libc
+source ./emsdk_env.sh
+echo "main(){}" > a.c
+HOME=/emsdk-portable/ emcc a.c
+HOME=/emsdk-portable/ emcc -s BINARYEN=1 a.c
+rm -f a.*
+
+# Make emsdk usable by any user
+cp /root/.emscripten /emsdk-portable
+chmod a+rxw -R /emsdk-portable
+
+# node 8 is required to run wasm
+cd /
+curl -L https://nodejs.org/dist/v8.0.0/node-v8.0.0-linux-x64.tar.xz | \
+    tar -xJ
+
diff --git a/libc/ci/run-docker.sh b/libc/ci/run-docker.sh
index e963078..662a1d4 100644..100755
--- a/libc/ci/run-docker.sh
+++ b/libc/ci/run-docker.sh
@@ -14,6 +14,7 @@ run() {
     docker run \
       --user `id -u`:`id -g` \
       --rm \
+      --init \
       --volume $HOME/.cargo:/cargo \
       $kvm \
       --env CARGO_HOME=/cargo \
@@ -22,7 +23,6 @@ run() {
       --volume `pwd`/target:/checkout/target \
       --env CARGO_TARGET_DIR=/checkout/target \
       --workdir /checkout \
-      --privileged \
       libc \
       ci/run.sh $1
 }
diff --git a/libc/ci/run.sh b/libc/ci/run.sh
index 3ddc7b3..ddf18fd 100755
--- a/libc/ci/run.sh
+++ b/libc/ci/run.sh
@@ -39,36 +39,11 @@ if [ "$QEMU" != "" ]; then
   rm -f $tmpdir/libc-test.img
   mkdir $tmpdir/mount
 
-  # If we have a cross compiler, then we just do the standard rigamarole of
-  # cross-compiling an executable and then the script to run just executes the
-  # binary.
-  #
-  # If we don't have a cross-compiler, however, then we need to do some crazy
-  # acrobatics to get this to work.  Generate all.{c,rs} on the host which will
-  # be compiled inside QEMU. Do this here because compiling syntex_syntax in
-  # QEMU would time out basically everywhere.
-  if [ "$CAN_CROSS" = "1" ]; then
-    cargo build --manifest-path libc-test/Cargo.toml --target $TARGET
-    cp $CARGO_TARGET_DIR/$TARGET/debug/libc-test $tmpdir/mount/
-    echo 'exec $1/libc-test' > $tmpdir/mount/run.sh
-  else
-    rm -rf $tmpdir/generated
-    mkdir -p $tmpdir/generated
-    cargo build --manifest-path libc-test/generate-files/Cargo.toml
-    (cd libc-test && TARGET=$TARGET OUT_DIR=$tmpdir/generated SKIP_COMPILE=1 \
-      $CARGO_TARGET_DIR/debug/generate-files)
-
-    # Copy this folder into the mounted image, the `run.sh` entry point, and
-    # overwrite the standard libc-test Cargo.toml with the overlay one which will
-    # assume the all.{c,rs} test files have already been generated
-    mkdir $tmpdir/mount/libc
-    cp -r Cargo.* libc-test src ci $tmpdir/mount/libc/
-    ln -s libc-test/target $tmpdir/mount/libc/target
-    cp ci/run-qemu.sh $tmpdir/mount/run.sh
-    echo $TARGET | tee -a $tmpdir/mount/TARGET
-    cp $tmpdir/generated/* $tmpdir/mount/libc/libc-test
-    cp libc-test/run-generated-Cargo.toml $tmpdir/mount/libc/libc-test/Cargo.toml
-  fi
+  # Do the standard rigamarole of cross-compiling an executable and then the
+  # script to run just executes the binary.
+  cargo build --manifest-path libc-test/Cargo.toml --target $TARGET
+  cp $CARGO_TARGET_DIR/$TARGET/debug/libc-test $tmpdir/mount/
+  echo 'exec $1/libc-test' > $tmpdir/mount/run.sh
 
   du -sh $tmpdir/mount
   genext2fs \
@@ -93,90 +68,4 @@ if [ "$QEMU" != "" ]; then
   exec grep "^PASSED .* tests" $CARGO_TARGET_DIR/out.log
 fi
 
-case "$TARGET" in
-  *-apple-ios)
-    cargo rustc --manifest-path libc-test/Cargo.toml --target $TARGET -- \
-        -C link-args=-mios-simulator-version-min=7.0
-    ;;
-
-  *)
-    cargo build --manifest-path libc-test/Cargo.toml --target $TARGET
-    ;;
-esac
-
-case "$TARGET" in
-  # Android emulator for x86_64 does not work on travis (missing hardware
-  # acceleration). Tests are run on case *). See ci/android-sysimage.sh for
-  # informations about how tests are run.
-  arm-linux-androideabi | aarch64-linux-android | i686-linux-android)
-    # set SHELL so android can detect a 64bits system, see
-    # http://stackoverflow.com/a/41789144
-    # https://issues.jenkins-ci.org/browse/JENKINS-26930?focusedCommentId=230791&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-230791
-    export SHELL=/bin/dash
-    arch=$(echo $TARGET | cut -d- -f1)
-    accel="-no-accel"
-    if emulator -accel-check; then
-      accel=""
-    fi
-    emulator @$arch -no-window $accel &
-    adb wait-for-device
-    adb push $CARGO_TARGET_DIR/$TARGET/debug/libc-test /data/local/tmp/libc-test
-    adb shell /data/local/tmp/libc-test 2>&1 | tee /tmp/out
-    grep "^PASSED .* tests" /tmp/out
-    ;;
-
-  i386-apple-ios)
-    rustc -O ./ci/ios/deploy_and_run_on_ios_simulator.rs
-    ./deploy_and_run_on_ios_simulator $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  x86_64-apple-ios)
-    rustc -O ./ci/ios/deploy_and_run_on_ios_simulator.rs
-    ./deploy_and_run_on_ios_simulator $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  arm-unknown-linux-gnueabihf)
-    qemu-arm -L /usr/arm-linux-gnueabihf $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  mips-unknown-linux-gnu)
-    qemu-mips -L /usr/mips-linux-gnu $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  mips64-unknown-linux-gnuabi64)
-    qemu-mips64 -L /usr/mips64-linux-gnuabi64 $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  mips-unknown-linux-musl)
-    qemu-mips -L /toolchain/staging_dir/toolchain-mips_34kc_gcc-5.3.0_musl-1.1.15 \
-              $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  mipsel-unknown-linux-musl)
-      qemu-mipsel -L /toolchain $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-      ;;
-
-  powerpc-unknown-linux-gnu)
-    qemu-ppc -L /usr/powerpc-linux-gnu $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  powerpc64-unknown-linux-gnu)
-    qemu-ppc64 -L /usr/powerpc64-linux-gnu $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  aarch64-unknown-linux-gnu)
-    qemu-aarch64 -L /usr/aarch64-linux-gnu/ $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-
-  *-rumprun-netbsd)
-    rumprun-bake hw_virtio /tmp/libc-test.img $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    qemu-system-x86_64 -nographic -vga none -m 64 \
-        -kernel /tmp/libc-test.img 2>&1 | tee /tmp/out &
-    sleep 5
-    grep "^PASSED .* tests" /tmp/out
-    ;;
-
-  *)
-    $CARGO_TARGET_DIR/$TARGET/debug/libc-test
-    ;;
-esac
+exec cargo test --manifest-path libc-test/Cargo.toml --target $TARGET
diff --git a/libc/ci/runtest-android.rs b/libc/ci/runtest-android.rs
new file mode 100644
index 0000000..a8f8db8
--- /dev/null
+++ b/libc/ci/runtest-android.rs
@@ -0,0 +1,41 @@
+use std::env;
+use std::process::Command;
+use std::path::{Path, PathBuf};
+
+fn main() {
+    assert_eq!(env::args_os().len(), 2);
+    let test = PathBuf::from(env::args_os().nth(1).unwrap());
+    let dst = Path::new("/data/local/tmp").join(test.file_name().unwrap());
+
+    let status = Command::new("adb")
+        .arg("wait-for-device")
+        .status()
+        .expect("failed to run rumprun-bake");
+    assert!(status.success());
+
+    let status = Command::new("adb")
+        .arg("push")
+        .arg(&test)
+        .arg(&dst)
+        .status()
+        .expect("failed to run rumprun-bake");
+    assert!(status.success());
+
+    let output = Command::new("adb")
+        .arg("shell")
+        .arg(&dst)
+        .output()
+        .expect("failed to run rumprun-bake");
+    assert!(status.success());
+
+    println!("status: {}\nstdout ---\n{}\nstderr ---\n{}",
+             output.status,
+             String::from_utf8_lossy(&output.stdout),
+             String::from_utf8_lossy(&output.stderr));
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let mut lines = stdout.lines().filter(|l| l.starts_with("PASSED "));
+    if !lines.any(|l| l.contains(" tests")) {
+        panic!("failed to find successful test run");
+    }
+}