diff options
Diffstat (limited to 'nixos/tests/systemd-confinement.nix')
| -rw-r--r-- | nixos/tests/systemd-confinement.nix | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/nixos/tests/systemd-confinement.nix b/nixos/tests/systemd-confinement.nix deleted file mode 100644 index bde5b770ea50d..0000000000000 --- a/nixos/tests/systemd-confinement.nix +++ /dev/null @@ -1,184 +0,0 @@ -import ./make-test-python.nix { - name = "systemd-confinement"; - - nodes.machine = { pkgs, lib, ... }: let - testServer = pkgs.writeScript "testserver.sh" '' - #!${pkgs.runtimeShell} - export PATH=${lib.escapeShellArg "${pkgs.coreutils}/bin"} - ${lib.escapeShellArg pkgs.runtimeShell} 2>&1 - echo "exit-status:$?" - ''; - - testClient = pkgs.writeScriptBin "chroot-exec" '' - #!${pkgs.runtimeShell} -e - output="$(echo "$@" | nc -NU "/run/test$(< /teststep).sock")" - ret="$(echo "$output" | sed -nre '$s/^exit-status:([0-9]+)$/\1/p')" - echo "$output" | head -n -1 - exit "''${ret:-1}" - ''; - - mkTestStep = num: { - testScript, - config ? {}, - serviceName ? "test${toString num}", - }: { - systemd.sockets.${serviceName} = { - description = "Socket for Test Service ${toString num}"; - wantedBy = [ "sockets.target" ]; - socketConfig.ListenStream = "/run/test${toString num}.sock"; - socketConfig.Accept = true; - }; - - systemd.services."${serviceName}@" = { - description = "Confined Test Service ${toString num}"; - confinement = (config.confinement or {}) // { enable = true; }; - serviceConfig = (config.serviceConfig or {}) // { - ExecStart = testServer; - StandardInput = "socket"; - }; - } // removeAttrs config [ "confinement" "serviceConfig" ]; - - __testSteps = lib.mkOrder num ('' - machine.succeed("echo ${toString num} > /teststep") - '' + testScript); - }; - - in { - imports = lib.imap1 mkTestStep [ - { config.confinement.mode = "chroot-only"; - testScript = '' - with subtest("chroot-only confinement"): - paths = machine.succeed('chroot-exec ls -1 / | paste -sd,').strip() - assert_eq(paths, "bin,nix,run") - uid = machine.succeed('chroot-exec id -u').strip() - assert_eq(uid, "0") - machine.succeed("chroot-exec chown 65534 /bin") - ''; - } - { testScript = '' - with subtest("full confinement with APIVFS"): - machine.fail("chroot-exec ls -l /etc") - machine.fail("chroot-exec chown 65534 /bin") - assert_eq(machine.succeed('chroot-exec id -u').strip(), "0") - machine.succeed("chroot-exec chown 0 /bin") - ''; - } - { config.serviceConfig.BindReadOnlyPaths = [ "/etc" ]; - testScript = '' - with subtest("check existence of bind-mounted /etc"): - passwd = machine.succeed('chroot-exec cat /etc/passwd').strip() - assert len(passwd) > 0, "/etc/passwd must not be empty" - ''; - } - { config.serviceConfig.User = "chroot-testuser"; - config.serviceConfig.Group = "chroot-testgroup"; - testScript = '' - with subtest("check if User/Group really runs as non-root"): - machine.succeed("chroot-exec ls -l /dev") - uid = machine.succeed('chroot-exec id -u').strip() - assert uid != "0", "UID of chroot-testuser shouldn't be 0" - machine.fail("chroot-exec touch /bin/test") - ''; - } - (let - symlink = pkgs.runCommand "symlink" { - target = pkgs.writeText "symlink-target" "got me\n"; - } "ln -s \"$target\" \"$out\""; - in { - config.confinement.packages = lib.singleton symlink; - testScript = '' - with subtest("check if symlinks are properly bind-mounted"): - machine.fail("chroot-exec test -e /etc") - text = machine.succeed('chroot-exec cat ${symlink}').strip() - assert_eq(text, "got me") - ''; - }) - { config.serviceConfig.User = "chroot-testuser"; - config.serviceConfig.Group = "chroot-testgroup"; - config.serviceConfig.StateDirectory = "testme"; - testScript = '' - with subtest("check if StateDirectory works"): - machine.succeed("chroot-exec touch /tmp/canary") - machine.succeed('chroot-exec "echo works > /var/lib/testme/foo"') - machine.succeed('test "$(< /var/lib/testme/foo)" = works') - machine.succeed("test ! -e /tmp/canary") - ''; - } - { testScript = '' - with subtest("check if /bin/sh works"): - machine.succeed( - "chroot-exec test -e /bin/sh", - 'test "$(chroot-exec \'/bin/sh -c "echo bar"\')" = bar', - ) - ''; - } - { config.confinement.binSh = null; - testScript = '' - with subtest("check if suppressing /bin/sh works"): - machine.succeed("chroot-exec test ! -e /bin/sh") - machine.succeed('test "$(chroot-exec \'/bin/sh -c "echo foo"\')" != foo') - ''; - } - { config.confinement.binSh = "${pkgs.hello}/bin/hello"; - testScript = '' - with subtest("check if we can set /bin/sh to something different"): - machine.succeed("chroot-exec test -e /bin/sh") - machine.succeed('test "$(chroot-exec /bin/sh -g foo)" = foo') - ''; - } - { config.environment.FOOBAR = pkgs.writeText "foobar" "eek\n"; - testScript = '' - with subtest("check if only Exec* dependencies are included"): - machine.succeed('test "$(chroot-exec \'cat "$FOOBAR"\')" != eek') - ''; - } - { config.environment.FOOBAR = pkgs.writeText "foobar" "eek\n"; - config.confinement.fullUnit = true; - testScript = '' - with subtest("check if all unit dependencies are included"): - machine.succeed('test "$(chroot-exec \'cat "$FOOBAR"\')" = eek') - ''; - } - { serviceName = "shipped-unitfile"; - config.confinement.mode = "chroot-only"; - testScript = '' - with subtest("check if shipped unit file still works"): - machine.succeed( - 'chroot-exec \'kill -9 $$ 2>&1 || :\' | ' - 'grep -q "Too many levels of symbolic links"' - ) - ''; - } - ]; - - options.__testSteps = lib.mkOption { - type = lib.types.lines; - description = "All of the test steps combined as a single script."; - }; - - config.environment.systemPackages = lib.singleton testClient; - config.systemd.packages = lib.singleton (pkgs.writeTextFile { - name = "shipped-unitfile"; - destination = "/etc/systemd/system/shipped-unitfile@.service"; - text = '' - [Service] - SystemCallFilter=~kill - SystemCallErrorNumber=ELOOP - ''; - }); - - config.users.groups.chroot-testgroup = {}; - config.users.users.chroot-testuser = { - isSystemUser = true; - description = "Chroot Test User"; - group = "chroot-testgroup"; - }; - }; - - testScript = { nodes, ... }: '' - def assert_eq(a, b): - assert a == b, f"{a} != {b}" - - machine.wait_for_unit("multi-user.target") - '' + nodes.machine.config.__testSteps; -} |