wow

modules/mizukios/features/packages/docker2libc.nix

@@ -0,0 +1,39 @@
+{ pkgs }:
+pkgs.writeShellApplication {
+  name = "nr";
+
+  runtimeInputs = with pkgs; [
+    nix-output-monitor
+    openssh
+    coreutils
+    nix
+    attic-client
+  ];
+
+  text = ''
+    #!/usr/bin/env bash
+    set -euo pipefail
+
+    image="${1:-tmp-elf-extract}"
+
+    docker build -t "$image" .
+
+    cid="$(docker create "$image" /bin/true)"
+    cleanup() {
+    docker rm -f "$cid" >/dev/null 2>&1 || true
+    }
+    trap cleanup EXIT
+
+    libc_path="$(docker run --rm --entrypoint /bin/sh "$image" -c 'for p in /lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libc.so.6 /lib64/libc.so.6 /lib/libc.so.6; do if [ -e "$p" ]; then echo "$p"; exit 0; fi; done; exit 1')"
+    ld_path="$(docker run --rm --entrypoint /bin/sh "$image" -c 'for p in /lib64/ld-linux-x86-64.so.2 /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 /lib/ld-linux-x86-64.so.2; do if [ -e "$p" ]; then echo "$p"; exit 0; fi; done; find /lib /usr/lib /lib64 -type f \( -name "ld-linux*.so*" -o -name "ld-*.so*" \) 2>/dev/null | head -n 1')"
+
+    [ -n "$libc_path" ] || { echo "libc.so.6 not found" >&2; exit 1; }
+    [ -n "$ld_path" ] || { echo "ld-linux not found" >&2; exit 1; }
+
+    docker cp -L "${cid}:${libc_path}" ./libc.so.6
+    docker cp -L "${cid}:${ld_path}" ./ld-linux-x86-64.so.2
+
+    file libc.so.6 ld-linux-x86-64.so.2
+    ls -lh libc.so.6 ld-linux-x86-64.so.2
+    '';
+}