feat(image): install upstream kexec which now have support for UKIs

flake.nix

@@ -22,22 +22,23 @@
       {
         packages = {
           default = patosPkgs.image;
-          image = pkgs.callPackage ./image {
+          image = pkgs.callPackage ./pkgs/image {
             inherit patosPkgs;
             inherit version;
           };
-          rootfs = pkgs.callPackage ./rootfs {
+          rootfs = pkgs.callPackage ./pkgs/rootfs {
             inherit patosPkgs;
             inherit version;
           };
-          initrd = pkgs.callPackage ./rootfs/mkinitrd.nix {
+          initrd = pkgs.callPackage ./pkgs/rootfs/mkinitrd.nix {
             inherit patosPkgs;
             inherit version;
           };
-          kernel = pkgs.callPackage ./kernel { };
-          glibc = pkgs.callPackage ./glibc { };
-          systemd = pkgs.callPackage ./systemd { };
-          dbus-broker = pkgs.callPackage ./dbus-broker { };
+          kernel = pkgs.callPackage ./pkgs/kernel { };
+          glibc = pkgs.callPackage ./pkgs/glibc { };
+          kexec = pkgs.callPackage ./pkgs/kexec-tools { };
+          systemd = pkgs.callPackage ./pkgs/systemd { };
+          dbus-broker = pkgs.callPackage ./pkgs/dbus-broker { };
 
           qemu-uefi-tpm = pkgs.callPackage ./utils/qemu-uefi-tpm.nix { };
         };

pkgs/kexec-tools/default.nix

@@ -0,0 +1,62 @@
+{
+  lib,
+  stdenv,
+  buildPackages,
+  fetchFromGitHub,
+  autoconf,
+  zlib,
+}:
+
+stdenv.mkDerivation {
+  pname = "kexec-tools";
+  version = "main";
+
+  src = fetchFromGitHub {
+    owner = "horms";
+    repo = "kexec-tools";
+    rev = "a7fcd424c4c80dea5a2fd5ffa274ffeb8129c790";
+    hash = "sha256-QKE+KCkueA21zNunTMidP9OuZaw0IG5tFDF4UJITTTQ=";
+  };
+
+  dontPatchShebangs = true;
+
+  hardeningDisable = [
+    "format"
+    "pic"
+    "relro"
+    "pie"
+  ];
+
+  buildCommand = ''
+    unpackPhase
+    mkdir -p $out
+    cd source
+    ./bootstrap
+    ./configure --prefix=/
+    make DESTDIR=$out install
+  '';
+
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+
+  buildInputs = [
+    zlib
+    autoconf
+  ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    homepage = "http://horms.net/projects/kexec/kexec-tools";
+    description = "Tools related to the kexec Linux feature";
+    platforms = platforms.linux;
+    badPlatforms = [
+      "microblaze-linux"
+      "microblazeel-linux"
+      "riscv64-linux"
+      "riscv32-linux"
+      "sparc-linux"
+      "sparc64-linux"
+    ];
+    license = licenses.gpl2Only;
+  };
+}

pkgs/rootfs/default.nix

@@ -26,6 +26,7 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   kmodBin = pkgs.kmod.out;
   libbpf = pkgs.libbpf.out;
   btrfs = pkgs.btrfs-progs.out;
+  kexec = patosPkgs.kexec.out;
 
   builder = ./mkrootfs.sh;
 })

pkgs/rootfs/mkrootfs.sh

@@ -107,6 +107,9 @@ $out/usr/bin/busybox --list | xargs -I {} ln -sf busybox $out/usr/bin/{}
 ### install dbus broker
 cp -r $dbusBroker/* $out/
 
+### install kexec
+cp -Pr ${kexec}/sbin/kexec $out/usr/bin/
+
 ### install btrfs progs
 cp -Pr ${btrfs}/bin/* $out/usr/bin/
 cp -Pr ${btrfs}/lib/* $out/usr/lib/