jaslkdfj

init.nix

@@ -0,0 +1,45 @@
+{
+  writeShellApplication,
+  pigeon-toolchain
+}:
+
+writeShellApplication {
+  name = "pigeon-init";
+  runtimeInputs = [ pigeon-toolchain ];
+  text = ''
+    finish() {
+      umount /root/results || true
+      sync
+      echo 1 >/proc/sys/kernel/sysrq
+      echo b >/proc/sysrq-trigger
+    }
+    trap 'finish' EXIT
+
+    mount -t proc proc /proc
+    mount -t devtmpfs devtmpfs /dev
+    mount -t tmpfs -o mode=1777,size=64m tmp /tmp
+    mount -t ext4 -r /dev/vdb /root/student
+    mount -t ext4 -r /dev/vdc /root/grader
+    mount -t ext4 /dev/vdd /root/results
+
+    mkdir -p /tmp/build
+    cp -a /root/student/. /tmp/build/
+    cp -a --remove-destination /root/grader/build/. /tmp/build/
+    chown -R 65534:65534 /tmp/build
+
+    (
+      cd /tmp/build
+      ulimit -t 30 -u 256 -n 256 -f 2048
+      setpriv --reuid=65534 --regid=65534 --clear-groups \
+        timeout -s 9 30 make >/root/results/build.log 2>&1
+      echo $? >/root/results/build.status
+    ) || true
+
+    [ "$(cat /root/results/build.status || true)" != 0 ] && exit
+
+    for TEST in /root/grader/tests/*.sh ; do
+      NAME="$(basename "$TEST" .sh)"
+      timeout -s 9 10 "$TEST" 2>/dev/null >"/root/results/$NAME" || true
+    done
+  '';
+}