nixpkgs/patches/transmission+apparmor.diff

   1 diff --git a/nixos/doc/manual/release-notes/rl-2009.xml b/nixos/doc/manual/release-notes/rl-2009.xml
   2 index 2225619d481..d5c1a5cb614 100644
   3 --- a/nixos/doc/manual/release-notes/rl-2009.xml
   4 +++ b/nixos/doc/manual/release-notes/rl-2009.xml
   5 @@ -680,6 +680,37 @@ systemd.services.nginx.serviceConfig.ReadWritePaths = [ "/var/www" ];
   6       was removed, as udev gained native support to handle FIDO security tokens.
   7      </para>
   8     </listitem>
   9 +   <listitem>
  10 +    <para>
  11 +     The <literal>services.transmission</literal> module
  12 +     was enhanced with the new options:
  13 +     <xref linkend="opt-services.transmission.credentialsFile"/>,
  14 +     <xref linkend="opt-services.transmission.openFirewall"/>,
  15 +     and <xref linkend="opt-services.transmission.performanceNetParameters"/>.
  16 +    </para>
  17 +    <para>
  18 +     <literal>transmission-daemon</literal> is now started with additional systemd sandbox/hardening options for better security.
  19 +     Please <link xlink:href="https://github.com/NixOS/nixpkgs/issues">report</link>
  20 +     any use case where this is not working well.
  21 +     In particular, the <literal>RootDirectory</literal> option newly set
  22 +     forbids uploading or downloading a torrent outside of the default directory
  23 +     configured at <link linkend="opt-services.transmission.settings">settings.download-dir</link>.
  24 +     If you really need Transmission to access other directories,
  25 +     you must include those directories into the <literal>BindPaths</literal> of the service:
  26 +<programlisting>
  27 +systemd.services.transmission.serviceConfig.BindPaths = [ "/path/to/alternative/download-dir" ];
  28 +</programlisting>
  29 +    </para>
  30 +    <para>
  31 +     Also, connection to the RPC (Remote Procedure Call) of <literal>transmission-daemon</literal>
  32 +     is now only available on the local network interface by default.
  33 +     Use:
  34 +<programlisting>
  35 +services.transmission.settings.rpc-bind-address = "0.0.0.0";
  36 +</programlisting>
  37 +     to get the previous behavior of listening on all network interfaces.
  38 +    </para>
  39 +   </listitem>
  40     <listitem>
  41      <para>
  42       With this release <literal>systemd-networkd</literal> (when enabled through <xref linkend="opt-networking.useNetworkd"/>)
  43 diff --git a/nixos/modules/config/fonts/fontconfig.nix b/nixos/modules/config/fonts/fontconfig.nix
  44 index 52d284f739b..3670487200d 100644
  45 --- a/nixos/modules/config/fonts/fontconfig.nix
  46 +++ b/nixos/modules/config/fonts/fontconfig.nix
  47 @@ -485,6 +485,38 @@ in
  48      (mkIf cfg.enable {
  49        environment.systemPackages    = [ pkgs.fontconfig ];
  50        environment.etc.fonts.source  = "${fontconfigEtc}/etc/fonts/";
  51 +      security.apparmor.includes."abstractions/fonts" = ''
  52 +        # fonts.conf
  53 +        r ${supportFontsConf},
  54 +        r ${latestPkg.out}/etc/fonts/fonts.conf,
  55 +
  56 +        # fontconfig default config files
  57 +        r ${supportPkg.out}/etc/fonts/conf.d/*.conf,
  58 +        r ${latestPkg.out}/etc/fonts/conf.d/*.conf,
  59 +
  60 +        # 00-nixos-cache.conf
  61 +        r ${cacheConfSupport},
  62 +        r ${cacheConfLatest},
  63 +
  64 +        # 10-nixos-rendering.conf
  65 +        r ${renderConf},
  66 +
  67 +        # local.conf (indirect priority 51)
  68 +        ${optionalString (cfg.localConf != "") ''
  69 +        r ${localConf},
  70 +        ''}
  71 +
  72 +        # 52-nixos-default-fonts.conf
  73 +        r ${defaultFontsConf},
  74 +
  75 +        # 53-no-bitmaps.conf
  76 +        r ${rejectBitmaps},
  77 +
  78 +        ${optionalString (!cfg.allowType1) ''
  79 +        # 53-nixos-reject-type1.conf
  80 +        r ${rejectType1},
  81 +        ''}
  82 +      '';
  83      })
  84      (mkIf (cfg.enable && !cfg.penultimate.enable) {
  85        fonts.fontconfig.confPackages = [ confPkg ];
  86 diff --git a/nixos/modules/security/apparmor-suid.nix b/nixos/modules/security/apparmor-suid.nix
  87 index 6c479e070e2..e6d9467f296 100644
  88 --- a/nixos/modules/security/apparmor-suid.nix
  89 +++ b/nixos/modules/security/apparmor-suid.nix
  90 @@ -21,9 +21,9 @@ with lib;
  91    };
  92
  93    config = mkIf (cfg.confineSUIDApplications) {
  94 -    security.apparmor.profiles = [ (pkgs.writeText "ping" ''
  95 +    security.apparmor.policies."bin/ping".profile = ''
  96        #include <tunables/global>
  97 -      /run/wrappers/bin/ping {
  98 +      /run/wrappers/wrappers.*/ping {
  99          #include <abstractions/base>
 100          #include <abstractions/consoles>
 101          #include <abstractions/nameservice>
 102 @@ -32,10 +32,19 @@ with lib;
 103          capability setuid,
 104          network inet raw,
 105
 106 -        ${pkgs.stdenv.cc.libc.out}/lib/*.so mr,
 107 -        ${pkgs.libcap.lib}/lib/libcap.so* mr,
 108 -        ${pkgs.attr.out}/lib/libattr.so* mr,
 109 +        ${getLib pkgs.stdenv.cc.cc}/lib/*.so* mr,
 110 +        ${getLib pkgs.stdenv.cc.libc}/lib/*.so* mr,
 111 +        ${getLib pkgs.stdenv.cc.libc}/lib/gconv/gconv-modules r,
 112 +        ${getLib pkgs.glibcLocales}/lib/locale/locale-archive r,
 113 +        ${getLib pkgs.attr.out}/lib/libattr.so* mr,
 114 +        ${getLib pkgs.libcap.lib}/lib/libcap.so* mr,
 115 +        ${getLib pkgs.libcap_ng}/lib/libcap-ng.so* mr,
 116 +        ${getLib pkgs.libidn2}/lib/libidn2.so* mr,
 117 +        ${getLib pkgs.libunistring}/lib/libunistring.so* mr,
 118 +        ${getLib pkgs.nettle}/lib/libnettle.so* mr,
 119
 120 +        #@{PROC}/@{pid}/environ r,
 121 +        /run/wrappers/wrappers.*/ping.real r,
 122          ${pkgs.iputils}/bin/ping mixr,
 123
 124          #/etc/modules.conf r,
 125 @@ -43,7 +52,7 @@ with lib;
 126          ## Site-specific additions and overrides. See local/README for details.
 127          ##include <local/bin.ping>
 128        }
 129 -    '') ];
 130 +    '';
 131    };
 132
 133  }
 134 diff --git a/nixos/modules/security/apparmor.nix b/nixos/modules/security/apparmor.nix
 135 index cfc65b347bc..f9abb18afd2 100644
 136 --- a/nixos/modules/security/apparmor.nix
 137 +++ b/nixos/modules/security/apparmor.nix
 138 @@ -1,59 +1,190 @@
 139  { config, lib, pkgs, ... }:
 140
 141  let
 142 -  inherit (lib) mkIf mkOption types concatMapStrings;
 143 +  inherit (builtins) head match readFile;
 144 +  inherit (lib) types;
 145 +  inherit (config.environment) etc;
 146    cfg = config.security.apparmor;
 147 +  mkDisableOption = name: lib.mkEnableOption name // {
 148 +    default = true;
 149 +    example = false;
 150 +  };
 151  in
 152
 153  {
 154 -   options = {
 155 -     security.apparmor = {
 156 -       enable = mkOption {
 157 -         type = types.bool;
 158 -         default = false;
 159 -         description = "Enable the AppArmor Mandatory Access Control system.";
 160 -       };
 161 -       profiles = mkOption {
 162 -         type = types.listOf types.path;
 163 -         default = [];
 164 -         description = "List of files containing AppArmor profiles.";
 165 -       };
 166 -       packages = mkOption {
 167 -         type = types.listOf types.package;
 168 -         default = [];
 169 -         description = "List of packages to be added to apparmor's include path";
 170 -       };
 171 -     };
 172 -   };
 173 +  imports = [
 174 +    (lib.mkRemovedOptionModule [ "security" "apparmor" "profiles" ] "Please use the new option: `security.apparmor.policies'.")
 175 +    apparmor/profiles.nix
 176 +  ];
 177 +  options = {
 178 +    security.apparmor = {
 179 +      enable = lib.mkEnableOption "the AppArmor Mandatory Access Control system";
 180 +      policies = lib.mkOption {
 181 +        description = ''
 182 +          AppArmor policies.
 183 +        '';
 184 +        type = types.attrsOf (types.submodule ({ name, config, ... }: {
 185 +          options = {
 186 +            enable = mkDisableOption "loading of the profile into the kernel";
 187 +            enforce = mkDisableOption "enforcing of the policy or only complain in the logs";
 188 +            profile = lib.mkOption {
 189 +              description = "The policy of the profile.";
 190 +              type = types.lines;
 191 +              apply = pkgs.writeText name;
 192 +            };
 193 +          };
 194 +        }));
 195 +        default = {};
 196 +      };
 197 +      includes = lib.mkOption {
 198 +        type = types.attrsOf types.lines;
 199 +        default = [];
 200 +        description = ''
 201 +          List of paths to be added to AppArmor's searched paths
 202 +          when resolving absolute #include directives.
 203 +        '';
 204 +        apply = lib.mapAttrs pkgs.writeText;
 205 +      };
 206 +      packages = lib.mkOption {
 207 +        type = types.listOf types.package;
 208 +        default = [];
 209 +        description = "List of packages to be added to AppArmor's include path";
 210 +      };
 211 +      enableCache = lib.mkEnableOption ''caching of AppArmor policies
 212 +        in <literal>/var/cache/apparmor/</literal>.
 213 +        Beware that AppArmor policies almost always contain Nix store paths,
 214 +        and thus produce at each change of these paths
 215 +        a new cached version accumulating in the cache.
 216 +      '';
 217 +      killUnconfinedConfinables = mkDisableOption ''killing of processes
 218 +        which have an AppArmor profile enabled
 219 +        (in <link linkend="opt-security.apparmor.policies">policies</link>)
 220 +        but are not confined (because AppArmor can only confine new processes).
 221 +      '';
 222 +    };
 223 +  };
 224
 225 -   config = mkIf cfg.enable {
 226 -     environment.systemPackages = [ pkgs.apparmor-utils ];
 227 +  config = lib.mkIf cfg.enable {
 228 +    environment.systemPackages = [ pkgs.apparmor-utils ];
 229 +    environment.etc."apparmor.d".source = pkgs.linkFarm "apparmor.d" (
 230 +      lib.mapAttrsToList (name: p: {inherit name; path=p.profile;}) cfg.policies ++
 231 +      lib.mapAttrsToList (name: path: {inherit name path;}) cfg.includes
 232 +    );
 233 +    environment.etc."apparmor/parser.conf".text = ''
 234 +      ${if cfg.enableCache then "write-cache" else "skip-cache"}
 235 +      cache-loc /var/cache/apparmor
 236 +      Include /etc/apparmor.d
 237 +    '' +
 238 +    lib.concatMapStrings (p: "Include ${p}/etc/apparmor.d\n") cfg.packages;
 239 +    environment.etc."apparmor/logprof.conf".text = ''
 240 +      [settings]
 241 +        profiledir = /etc/apparmor.d
 242 +        inactive_profiledir = ${pkgs.apparmor-profiles}/share/apparmor/extra-profiles
 243 +        logfiles = /var/log/audit/audit.log /var/log/syslog /var/log/messages
 244
 245 -     boot.kernelParams = [ "apparmor=1" "security=apparmor" ];
 246 +        parser = ${pkgs.apparmor-parser}/bin/apparmor_parser
 247 +        ldd = ${pkgs.glibc.bin}/bin/ldd
 248 +        logger = ${pkgs.utillinux}/bin/logger
 249
 250 -     systemd.services.apparmor = let
 251 -       paths = concatMapStrings (s: " -I ${s}/etc/apparmor.d")
 252 -         ([ pkgs.apparmor-profiles ] ++ cfg.packages);
 253 -     in {
 254 -       after = [ "local-fs.target" ];
 255 -       before = [ "sysinit.target" ];
 256 -       wantedBy = [ "multi-user.target" ];
 257 -       unitConfig = {
 258 -         DefaultDependencies = "no";
 259 -       };
 260 -       serviceConfig = {
 261 -         Type = "oneshot";
 262 -         RemainAfterExit = "yes";
 263 -         ExecStart = map (p:
 264 -           ''${pkgs.apparmor-parser}/bin/apparmor_parser -rKv ${paths} "${p}"''
 265 -         ) cfg.profiles;
 266 -         ExecStop = map (p:
 267 -           ''${pkgs.apparmor-parser}/bin/apparmor_parser -Rv "${p}"''
 268 -         ) cfg.profiles;
 269 -         ExecReload = map (p:
 270 -           ''${pkgs.apparmor-parser}/bin/apparmor_parser --reload ${paths} "${p}"''
 271 -         ) cfg.profiles;
 272 -       };
 273 -     };
 274 -   };
 275 +        # customize how file ownership permissions are presented
 276 +        # 0 - off
 277 +        # 1 - default of what ever mode the log reported
 278 +        # 2 - force the new permissions to be user
 279 +        # 3 - force all perms on the rule to be user
 280 +        default_owner_prompt = 1
 281 +
 282 +        # custom directory locations to look for #includes
 283 +        #
 284 +        # each name should be a valid directory containing possible #include
 285 +        # candidate files under the profile dir which by default is /etc/apparmor.d.
 286 +        #
 287 +        # So an entry of my-includes will allow /etc/apparmor.d/my-includes to
 288 +        # be used by the yast UI and profiling tools as a source of #include
 289 +        # files.
 290 +        custom_includes =
 291 +
 292 +      [qualifiers]
 293 +        ${pkgs.runtimeShell} = icnu
 294 +        ${pkgs.bashInteractive}/bin/sh = icnu
 295 +        ${pkgs.bashInteractive}/bin/bash = icnu
 296 +    '' + head (match "^.*\\[qualifiers](.*)" # Drop the original [settings] section.
 297 +                     (readFile "${pkgs.apparmor-utils}/etc/apparmor/logprof.conf"));
 298 +
 299 +    boot.kernelParams = [ "apparmor=1" "security=apparmor" ];
 300 +
 301 +    systemd.services.apparmor = {
 302 +      after = [
 303 +        "local-fs.target"
 304 +        "systemd-journald-audit.socket"
 305 +      ];
 306 +      before = [ "sysinit.target" ];
 307 +      wantedBy = [ "multi-user.target" ];
 308 +      restartTriggers = [
 309 +        etc."apparmor/parser.conf".source
 310 +        etc."apparmor.d".source
 311 +      ];
 312 +      unitConfig = {
 313 +        Description="Load AppArmor policies";
 314 +        DefaultDependencies = "no";
 315 +        ConditionSecurity = "apparmor";
 316 +      };
 317 +      # Reloading instead of restarting enables to load new AppArmor profiles
 318 +      # without necessarily restarting all services which have Requires=apparmor.service
 319 +      # It works by:
 320 +      # - Adding or replacing into the kernel profiles enabled in cfg.policies
 321 +      #   (because AppArmor can do that without stopping the processes already confined).
 322 +      # - Removing from the kernel any profile whose name is not
 323 +      #   one of the names within the content of the profiles in cfg.policies.
 324 +      # - Killing the processes which are unconfined but now have a profile loaded
 325 +      #   (because AppArmor can only confine new processes).
 326 +      reloadIfChanged = true;
 327 +      # Avoid searchs in /usr/share/locale/
 328 +      environment.LANG="C";
 329 +      serviceConfig = let
 330 +        enabledPolicies = lib.attrValues (lib.filterAttrs (n: p: p.enable) cfg.policies);
 331 +        removeDisabledProfiles = pkgs.writeShellScript "apparmor-remove" ''
 332 +          set -eux
 333 +
 334 +          enabledProfiles=$(mktemp)
 335 +          loadedProfiles=$(mktemp)
 336 +          trap "rm -f $enabledProfiles $loadedProfiles" EXIT
 337 +
 338 +          ${pkgs.apparmor-parser}/bin/apparmor_parser --names /dev/null ${
 339 +            lib.concatMapStrings (p: "\\\n "+p.profile) enabledPolicies} |
 340 +          sort -u >"$enabledProfiles"
 341 +
 342 +          sed -e "s/ (\(enforce\|complain\))$//" /sys/kernel/security/apparmor/profiles |
 343 +          sort -u >"$loadedProfiles"
 344 +
 345 +          comm -23 "$loadedProfiles" "$enabledProfiles" |
 346 +          while IFS=$'\n\r' read -r profile
 347 +          do printf %s "$profile" >/sys/kernel/security/apparmor/.remove
 348 +          done
 349 +        '';
 350 +        killUnconfinedConfinables = pkgs.writeShellScript "apparmor-kill" ''
 351 +          set -eux
 352 +          ${pkgs.apparmor-utils}/bin/aa-status --json |
 353 +          ${pkgs.jq}/bin/jq --raw-output '.processes | .[] | .[] | select (.status == "unconfined") | .pid' |
 354 +          xargs --verbose --no-run-if-empty --delimiter='\n' \
 355 +          kill
 356 +        '';
 357 +        commonOpts = p: "--verbose --show-cache ${lib.optionalString (!p.enforce) "--complain "}${p.profile}";
 358 +        in {
 359 +        Type = "oneshot";
 360 +        RemainAfterExit = "yes";
 361 +        ExecStartPre = "${pkgs.apparmor-utils}/bin/aa-teardown";
 362 +        ExecStart = map (p: "${pkgs.apparmor-parser}/bin/apparmor_parser --add ${commonOpts p}") enabledPolicies;
 363 +        ExecStartPost = lib.optional cfg.killUnconfinedConfinables killUnconfinedConfinables;
 364 +        ExecReload =
 365 +          map (p: "${pkgs.apparmor-parser}/bin/apparmor_parser --replace ${commonOpts p}") enabledPolicies ++
 366 +          [ removeDisabledProfiles ] ++
 367 +          lib.optional cfg.killUnconfinedConfinables killUnconfinedConfinables;
 368 +        ExecStop = "${pkgs.apparmor-utils}/bin/aa-teardown";
 369 +        CacheDirectory = [ "apparmor" ];
 370 +        CacheDirectoryMode = "0700";
 371 +      };
 372 +    };
 373 +  };
 374 +
 375 +  meta.maintainers = with lib.maintainers; [ julm ];
 376  }
 377 diff --git a/nixos/modules/security/apparmor/profiles.nix b/nixos/modules/security/apparmor/profiles.nix
 378 new file mode 100644
 379 index 00000000000..7e33e630798
 380 --- /dev/null
 381 +++ b/nixos/modules/security/apparmor/profiles.nix
 382 @@ -0,0 +1,333 @@
 383 +{ config, lib, pkgs, ... }:
 384 +let
 385 +  inherit (builtins) attrNames hasAttr isAttrs;
 386 +  inherit (lib) getLib;
 387 +  inherit (config.environment) etc;
 388 +  etcRule = arg:
 389 +    let go = {path ? null, mode ? "r", trail ? ""}:
 390 +      lib.optionalString (hasAttr path etc)
 391 +        "${mode} ${config.environment.etc."${path}".source}${trail},";
 392 +    in if isAttrs arg
 393 +    then go arg
 394 +    else go {path=arg;};
 395 +in
 396 +{
 397 +config.security.apparmor.packages = [ pkgs.apparmor-profiles ];
 398 +# FIXME: most of the etcRule calls below have been
 399 +# written systematically by converting from apparmor-profiles's profiles
 400 +# without testing nor deep understanding of their uses,
 401 +# and thus may need more rules or can have less rules;
 402 +# this remains to me determined case by case,
 403 +# some may even be completely useless.
 404 +config.security.apparmor.includes = {
 405 +  # This one is included by <tunables/global>
 406 +  # which is usualy included before any profile.
 407 +  "abstractions/tunables/alias" = ''
 408 +    alias /bin -> /run/current-system/sw/bin,
 409 +    # Unfortunately /etc is mainly built using symlinks,
 410 +    # thus aliasing does not work.
 411 +    #alias /etc -> /run/current-system/etc,
 412 +    alias /lib/modules -> /run/current-system/kernel/lib/modules,
 413 +    alias /sbin -> /run/current-system/sw/sbin,
 414 +    alias /usr -> /run/current-system/sw,
 415 +  '';
 416 +  "abstractions/audio" = ''
 417 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/audio
 418 +    ${etcRule "asound.conf"}
 419 +    ${etcRule "esound/esd.conf"}
 420 +    ${etcRule "libao.conf"}
 421 +    ${etcRule {path="pulse"; trail="/";}}
 422 +    ${etcRule {path="pulse"; trail="/**";}}
 423 +    ${etcRule {path="sound"; trail="/";}}
 424 +    ${etcRule {path="sound"; trail="/**";}}
 425 +    ${etcRule {path="alsa/conf.d"; trail="/";}}
 426 +    ${etcRule {path="alsa/conf.d"; trail="/*";}}
 427 +    ${etcRule "openal/alsoft.conf"}
 428 +    ${etcRule "wildmidi/wildmidi.conf"}
 429 +  '';
 430 +  # FIXME: security.pam configures more .so than allowed here,
 431 +  # but has many tests to decide what .so to use,
 432 +  # so it would be simpler to let security.pam add those .so
 433 +  # to the present security.apparmor.includes."abstractions/authentication"
 434 +  "abstractions/authentication" = ''
 435 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/authentication
 436 +    ${etcRule "nologin"}
 437 +    ${lib.concatMapStringsSep "\n"
 438 +       (name: "r ${etc."pam.d/${name}".source},")
 439 +       (attrNames config.security.pam.services)}
 440 +    mr ${getLib pkgs.pam}/lib/security/pam_filter/*,
 441 +    mr ${getLib pkgs.pam}/lib/security/pam_*.so,
 442 +    r ${getLib pkgs.pam}/lib/security/,
 443 +    ${etcRule "securetty"}
 444 +    ${etcRule {path="security"; trail="/*";}}
 445 +    ${etcRule "shadow"}
 446 +    ${etcRule "gshadow"}
 447 +    ${etcRule "pwdb.conf"}
 448 +    ${etcRule "default/passwd"}
 449 +    ${etcRule "login.defs"}
 450 +  '';
 451 +  "abstractions/base" = ''
 452 +     #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/base
 453 +     r ${pkgs.stdenv.cc.libc}/share/locale/**,
 454 +     r ${pkgs.stdenv.cc.libc}/share/locale.alias,
 455 +     ${etcRule "localtime"}
 456 +     r /etc/ld-nix.so.preload,
 457 +     ${etcRule "ld-nix.so.preload"}
 458 +     ${lib.concatMapStrings (p: lib.optionalString (p != "") "mr ${p},\n")
 459 +                            (lib.splitString "\n" etc."ld-nix.so.preload".text)
 460 +       # TODO: avoid this line splitting by nixifying ld-nix.so.preload as a list or attrset,
 461 +       # and make services.config.malloc use it.
 462 +     }
 463 +     r ${pkgs.tzdata}/share/zoneinfo/**,
 464 +     r ${pkgs.stdenv.cc.libc}/share/i18n/**,
 465 +  '';
 466 +  "abstractions/bash" = ''
 467 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/bash
 468 +    # system-wide bash configuration
 469 +    ${etcRule "profile.dos"}
 470 +    ${etcRule "profile"}
 471 +    ${etcRule "profile.d"}
 472 +    ${etcRule {path="profile.d"; trail="/*";}}
 473 +    ${etcRule "bashrc"}
 474 +    ${etcRule "bash.bashrc"}
 475 +    ${etcRule "bash.bashrc.local"}
 476 +    ${etcRule "bash_completion"}
 477 +    ${etcRule "bash_completion.d"}
 478 +    ${etcRule {path="bash_completion.d"; trail="/*";}}
 479 +    # bash relies on system-wide readline configuration
 480 +    ${etcRule "inputrc"}
 481 +    # bash inspects filesystems at startup
 482 +    # and /etc/mtab is linked to /proc/mounts
 483 +    @{PROC}/mounts
 484 +
 485 +    # run out of /etc/bash.bashrc
 486 +    ${etcRule "DIR_COLORS"}
 487 +  '';
 488 +  "abstractions/cups-client" = ''
 489 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/cpus-client
 490 +    ${etcRule "cups/cups-client.conf"}
 491 +  '';
 492 +  "abstractions/consoles" = ''
 493 +     #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/consoles
 494 +  '';
 495 +  "abstractions/dbus-session-strict" = ''
 496 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dbus-session-strict
 497 +    ${etcRule "machine-id"}
 498 +  '';
 499 +  "abstractions/dconf" = ''
 500 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dconf
 501 +    ${etcRule {path="dconf"; trail="/**";}}
 502 +  '';
 503 +  "abstractions/dri-common" = ''
 504 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dri-common
 505 +    ${etcRule "drirc"}
 506 +  '';
 507 +  # The config.fonts.fontconfig NixOS module adds many files to /etc/fonts/
 508 +  # by symlinking them but without exporting them outside of its NixOS module,
 509 +  # those are therefore added there to this "abstractions/fonts".
 510 +  "abstractions/fonts" = ''
 511 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/fonts
 512 +    ${etcRule {path="fonts"; trail="/**";}}
 513 +  '';
 514 +  "abstractions/gnome" = ''
 515 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/gnome
 516 +    ${etcRule {path="gnome"; trail="/gtkrc*";}}
 517 +    ${etcRule {path="gtk"; trail="/*";}}
 518 +    ${etcRule {path="gtk-2.0"; trail="/*";}}
 519 +    ${etcRule {path="gtk-3.0"; trail="/*";}}
 520 +    ${etcRule "orbitrc"}
 521 +    #include <abstractions/fonts>
 522 +    ${etcRule {path="pango"; trail="/*";}}
 523 +    ${etcRule {path="/etc/gnome-vfs-2.0"; trail="/modules/";}}
 524 +    ${etcRule {path="/etc/gnome-vfs-2.0"; trail="/modules/*";}}
 525 +    ${etcRule "papersize"}
 526 +    ${etcRule {path="cups"; trail="/lpoptions";}}
 527 +    ${etcRule {path="gnome"; trail="/defaults.list";}}
 528 +    ${etcRule {path="xdg"; trail="/{,*-}mimeapps.list";}}
 529 +    ${etcRule "xdg/mimeapps.list"}
 530 +  '';
 531 +  "abstractions/kde" = ''
 532 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/kde
 533 +    ${etcRule {path="qt3"; trail="/kstylerc";}}
 534 +    ${etcRule {path="qt3"; trail="/qt_plugins_3.3rc";}}
 535 +    ${etcRule {path="qt3"; trail="/qtrc";}}
 536 +    ${etcRule "kderc"}
 537 +    ${etcRule {path="kde3"; trail="/*";}}
 538 +    ${etcRule "kde4rc"}
 539 +    ${etcRule {path="xdg"; trail="/kdeglobals";}}
 540 +    ${etcRule {path="xdg"; trail="/Trolltech.conf";}}
 541 +  '';
 542 +  "abstractions/kerberosclient" = ''
 543 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/kerberosclient
 544 +    ${etcRule {path="krb5.keytab"; mode="rk";}}
 545 +    ${etcRule "krb5.conf"}
 546 +    ${etcRule "krb5.conf.d"}
 547 +    ${etcRule {path="krb5.conf.d"; trail="/*";}}
 548 +
 549 +    # config files found via strings on libs
 550 +    ${etcRule "krb.conf"}
 551 +    ${etcRule "krb.realms"}
 552 +    ${etcRule "srvtab"}
 553 +  '';
 554 +  "abstractions/ldapclient" = ''
 555 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/ldapclient
 556 +    ${etcRule "ldap.conf"}
 557 +    ${etcRule "ldap.secret"}
 558 +    ${etcRule {path="openldap"; trail="/*";}}
 559 +    ${etcRule {path="openldap"; trail="/cacerts/*";}}
 560 +    ${etcRule {path="sasl2"; trail="/*";}}
 561 +  '';
 562 +  "abstractions/likewise" = ''
 563 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/likewise
 564 +  '';
 565 +  "abstractions/mdns" = ''
 566 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/mdns
 567 +     ${etcRule "nss_mdns.conf"}
 568 +  '';
 569 +  "abstractions/nameservice" = ''
 570 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nameservice
 571 +
 572 +    # Many programs wish to perform nameservice-like operations, such as
 573 +    # looking up users by name or id, groups by name or id, hosts by name
 574 +    # or IP, etc. These operations may be performed through files, dns,
 575 +    # NIS, NIS+, LDAP, hesiod, wins, etc. Allow them all here.
 576 +    ${etcRule "group"}
 577 +    ${etcRule "host.conf"}
 578 +    ${etcRule "hosts"}
 579 +    ${etcRule "nsswitch.conf"}
 580 +    ${etcRule "gai.conf"}
 581 +    ${etcRule "passwd"}
 582 +    ${etcRule "protocols"}
 583 +
 584 +    # libtirpc (used for NIS/YP login) needs this
 585 +    ${etcRule "netconfig"}
 586 +
 587 +    ${etcRule "resolv.conf"}
 588 +
 589 +    ${etcRule {path="samba"; trail="/lmhosts";}}
 590 +    ${etcRule "services"}
 591 +
 592 +    ${etcRule "default/nss"}
 593 +
 594 +    # libnl-3-200 via libnss-gw-name
 595 +    ${etcRule {path="libnl"; trail="/classid";}}
 596 +    ${etcRule {path="libnl-3"; trail="/classid";}}
 597 +
 598 +    mr ${getLib pkgs.nss}/lib/libnss_*.so*,
 599 +    mr ${getLib pkgs.nss}/lib64/libnss_*.so*,
 600 +  '';
 601 +  "abstractions/nis" = ''
 602 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nis
 603 +  '';
 604 +  "abstractions/nvidia" = ''
 605 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nvidia
 606 +    ${etcRule "vdpau_wrapper.cfg"}
 607 +  '';
 608 +  "abstractions/opencl-common" = ''
 609 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/opencl-common
 610 +    ${etcRule {path="OpenCL"; trail="/**";}}
 611 +  '';
 612 +  "abstractions/opencl-mesa" = ''
 613 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/opencl-mesa
 614 +    ${etcRule "default/drirc"}
 615 +  '';
 616 +  "abstractions/openssl" = ''
 617 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/openssl
 618 +    ${etcRule {path="ssl"; trail="/openssl.cnf";}}
 619 +  '';
 620 +  "abstractions/p11-kit" = ''
 621 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/p11-kit
 622 +    ${etcRule {path="pkcs11"; trail="/";}}
 623 +    ${etcRule {path="pkcs11"; trail="/pkcs11.conf";}}
 624 +    ${etcRule {path="pkcs11"; trail="/modules/";}}
 625 +    ${etcRule {path="pkcs11"; trail="/modules/*";}}
 626 +  '';
 627 +  "abstractions/perl" = ''
 628 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/perl
 629 +    ${etcRule {path="perl"; trail="/**";}}
 630 +  '';
 631 +  "abstractions/php" = ''
 632 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/php
 633 +    ${etcRule {path="php"; trail="/**/";}}
 634 +    ${etcRule {path="php5"; trail="/**/";}}
 635 +    ${etcRule {path="php7"; trail="/**/";}}
 636 +    ${etcRule {path="php"; trail="/**.ini";}}
 637 +    ${etcRule {path="php5"; trail="/**.ini";}}
 638 +    ${etcRule {path="php7"; trail="/**.ini";}}
 639 +  '';
 640 +  "abstractions/postfix-common" = ''
 641 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/postfix-common
 642 +    ${etcRule "mailname"}
 643 +    ${etcRule {path="postfix"; trail="/*.cf";}}
 644 +    ${etcRule "postfix/main.cf"}
 645 +    ${etcRule "postfix/master.cf"}
 646 +  '';
 647 +  "abstractions/python" = ''
 648 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/python
 649 +    ${etcRule {path="python2.4"; trail="/**";}}
 650 +    ${etcRule {path="python2.5"; trail="/**";}}
 651 +    ${etcRule {path="python2.6"; trail="/**";}}
 652 +    ${etcRule {path="python2.7"; trail="/**";}}
 653 +    ${etcRule {path="python3.0"; trail="/**";}}
 654 +    ${etcRule {path="python3.1"; trail="/**";}}
 655 +    ${etcRule {path="python3.2"; trail="/**";}}
 656 +    ${etcRule {path="python3.3"; trail="/**";}}
 657 +    ${etcRule {path="python3.4"; trail="/**";}}
 658 +    ${etcRule {path="python3.5"; trail="/**";}}
 659 +    ${etcRule {path="python3.6"; trail="/**";}}
 660 +    ${etcRule {path="python3.7"; trail="/**";}}
 661 +    ${etcRule {path="python3.8"; trail="/**";}}
 662 +    ${etcRule {path="python3.9"; trail="/**";}}
 663 +  '';
 664 +  "abstractions/qt5" = ''
 665 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/qt5
 666 +    ${etcRule {path="xdg"; trail="/QtProject/qtlogging.ini";}}
 667 +    ${etcRule {path="xdg/QtProject"; trail="/qtlogging.ini";}}
 668 +    ${etcRule "xdg/QtProject/qtlogging.ini"}
 669 +  '';
 670 +  "abstractions/samba" = ''
 671 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/samba
 672 +    ${etcRule {path="samba"; trail="/*";}}
 673 +  '';
 674 +  "abstractions/ssl_certs" = ''
 675 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/ssl_certs
 676 +    ${etcRule "ssl/certs/ca-certificates.crt"}
 677 +    ${etcRule "ssl/certs/ca-bundle.crt"}
 678 +    ${etcRule "pki/tls/certs/ca-bundle.crt"}
 679 +
 680 +    ${etcRule {path="ssl/trust"; trail="/";}}
 681 +    ${etcRule {path="ssl/trust"; trail="/*";}}
 682 +    ${etcRule {path="ssl/trust/anchors"; trail="/";}}
 683 +    ${etcRule {path="ssl/trust/anchors"; trail="/**";}}
 684 +    ${etcRule {path="pki/trust"; trail="/";}}
 685 +    ${etcRule {path="pki/trust"; trail="/*";}}
 686 +    ${etcRule {path="pki/trust/anchors"; trail="/";}}
 687 +    ${etcRule {path="pki/trust/anchors"; trail="/**";}}
 688 +
 689 +    # security.acme NixOS module
 690 +    r /var/lib/acme/*/cert.pem,
 691 +    r /var/lib/acme/*/chain.pem,
 692 +    r /var/lib/acme/*/fullchain.pem,
 693 +  '';
 694 +  "abstractions/ssl_keys" = ''
 695 +    # security.acme NixOS module
 696 +    r /var/lib/acme/*/full.pem,
 697 +    r /var/lib/acme/*/key.pem,
 698 +  '';
 699 +  "abstractions/vulkan" = ''
 700 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/vulkan
 701 +    ${etcRule {path="vulkan/icd.d"; trail="/";}}
 702 +    ${etcRule {path="vulkan/icd.d"; trail="/*.json";}}
 703 +  '';
 704 +  "abstractions/winbind" = ''
 705 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/winbind
 706 +    ${etcRule {path="samba"; trail="/smb.conf";}}
 707 +    ${etcRule {path="samba"; trail="/dhcp.conf";}}
 708 +  '';
 709 +  "abstractions/X" = ''
 710 +    #include ${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/X
 711 +    ${etcRule {path="X11/cursors"; trail="/";}}
 712 +    ${etcRule {path="X11/cursors"; trail="/**";}}
 713 +  '';
 714 +};
 715 +}
 716 diff --git a/nixos/modules/security/pam.nix b/nixos/modules/security/pam.nix
 717 index 565c15dec24..66219d37c7d 100644
 718 --- a/nixos/modules/security/pam.nix
 719 +++ b/nixos/modules/security/pam.nix
 720 @@ -836,6 +836,57 @@ in
 721          runuser-l = { rootOK = true; unixAuth = false; };
 722        };
 723
 724 +    security.apparmor.includes."abstractions/pam" = let
 725 +      isEnabled = test: fold or false (map test (attrValues config.security.pam.services));
 726 +      in ''
 727 +      ${optionalString use_ldap
 728 +        "mr ${pam_ldap}/lib/security/pam_ldap.so,"}
 729 +      ${optionalString config.services.sssd.enable
 730 +        "mr ${pkgs.sssd}/lib/security/pam_sss.so,"}
 731 +      ${optionalString config.krb5.enable ''
 732 +        mr ${pam_krb5}/lib/security/pam_krb5.so,
 733 +        mr ${pam_ccreds}/lib/security/pam_ccreds.so,
 734 +      ''}
 735 +      ${optionalString (isEnabled (cfg: cfg.googleOsLoginAccountVerification)) ''
 736 +        mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_login.so,
 737 +        mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_admin.so,
 738 +      ''}
 739 +      ${optionalString (isEnabled (cfg: cfg.googleOsLoginAuthentication))
 740 +        "mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_login.so,"}
 741 +      ${optionalString (config.security.pam.enableSSHAgentAuth && isEnabled (cfg: cfg.sshAgentAuth))
 742 +        "mr ${pkgs.pam_ssh_agent_auth}/libexec/pam_ssh_agent_auth.so,"}
 743 +      ${optionalString (isEnabled (cfg: cfg.fprintAuth))
 744 +        "mr ${pkgs.fprintd}/lib/security/pam_fprintd.so,"}
 745 +      ${optionalString (isEnabled (cfg: cfg.u2fAuth))
 746 +        "mr ${pkgs.pam_u2f}/lib/security/pam_u2f.so,"}
 747 +      ${optionalString (isEnabled (cfg: cfg.usbAuth))
 748 +        "mr ${pkgs.pam_usb}/lib/security/pam_usb.so,"}
 749 +      ${optionalString (isEnabled (cfg: cfg.oathAuth))
 750 +        "mr ${pkgs.oathToolkit}/lib/security/pam_oath.so,"}
 751 +      ${optionalString (isEnabled (cfg: cfg.yubicoAuth))
 752 +        "mr ${pkgs.yubico-pam}/lib/security/pam_yubico.so,"}
 753 +      ${optionalString (isEnabled (cfg: cfg.duoSecurity.enable))
 754 +        "mr ${pkgs.duo-unix}/lib/security/pam_duo.so,"}
 755 +      ${optionalString (isEnabled (cfg: cfg.otpwAuth))
 756 +        "mr ${pkgs.otpw}/lib/security/pam_otpw.so,"}
 757 +      ${optionalString config.security.pam.enableEcryptfs
 758 +        "mr ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so,"}
 759 +      ${optionalString (isEnabled (cfg: cfg.pamMount))
 760 +        "mr ${pkgs.pam_mount}/lib/security/pam_mount.so,"}
 761 +      ${optionalString config.services.samba.syncPasswordsByPam
 762 +        "mr ${pkgs.samba}/lib/security/pam_smbpass.so,"}
 763 +      ${optionalString (isEnabled (cfg: cfg.enableGnomeKeyring))
 764 +        "mr ${pkgs.gnome3.gnome-keyring}/lib/security/pam_gnome_keyring.so,"}
 765 +      ${optionalString (isEnabled (cfg: cfg.startSession))
 766 +        "mr ${pkgs.systemd}/lib/security/pam_systemd.so,"}
 767 +      ${optionalString (isEnabled (cfg: cfg.enableAppArmor) && config.security.apparmor.enable)
 768 +        "mr ${pkgs.apparmor-pam}/lib/security/pam_apparmor.so,"}
 769 +      ${optionalString (isEnabled (cfg: cfg.enableKwallet))
 770 +        "mr ${pkgs.plasma5.kwallet-pam}/lib/security/pam_kwallet5.so,"}
 771 +      ${optionalString config.virtualisation.lxc.lxcfs.enable
 772 +        "mr ${pkgs.lxc}/lib/security/pam_cgfs.so"}
 773 +    '';
 774 +
 775    };
 776
 777  }
 778 diff --git a/nixos/modules/services/torrent/transmission.nix b/nixos/modules/services/torrent/transmission.nix
 779 index 1bfcf2de82f..f589c31ad75 100644
 780 --- a/nixos/modules/services/torrent/transmission.nix
 781 +++ b/nixos/modules/services/torrent/transmission.nix
 782 @@ -1,52 +1,51 @@
 783 -{ config, lib, pkgs, ... }:
 784 +{ config, lib, pkgs, options, ... }:
 785
 786  with lib;
 787
 788  let
 789    cfg = config.services.transmission;
 790 +  inherit (config.environment) etc;
 791    apparmor = config.security.apparmor.enable;
 792 -
 793 -  homeDir = cfg.home;
 794 -  downloadDirPermissions = cfg.downloadDirPermissions;
 795 -  downloadDir = "${homeDir}/Downloads";
 796 -  incompleteDir = "${homeDir}/.incomplete";
 797 -
 798 -  settingsDir = "${homeDir}/config";
 799 -  settingsFile = pkgs.writeText "settings.json" (builtins.toJSON fullSettings);
 800 -
 801 -  # for users in group "transmission" to have access to torrents
 802 -  fullSettings = { umask = 2; download-dir = downloadDir; incomplete-dir = incompleteDir; } // cfg.settings;
 803 -
 804 -  preStart = pkgs.writeScript "transmission-pre-start" ''
 805 -    #!${pkgs.runtimeShell}
 806 -    set -ex
 807 -    cp -f ${settingsFile} ${settingsDir}/settings.json
 808 -  '';
 809 +  rootDir = "/run/transmission";
 810 +  homeDir = "/var/lib/transmission";
 811 +  settingsDir = ".config/transmission-daemon";
 812 +  downloadsDir = "Downloads";
 813 +  incompleteDir = ".incomplete";
 814 +  # TODO: switch to configGen.json once RFC0042 is implemented
 815 +  settingsFile = pkgs.writeText "settings.json" (builtins.toJSON cfg.settings);
 816  in
 817  {
 818    options = {
 819      services.transmission = {
 820 -      enable = mkOption {
 821 -        type = types.bool;
 822 -        default = false;
 823 -        description = ''
 824 -          Whether or not to enable the headless Transmission BitTorrent daemon.
 825 +      enable = mkEnableOption ''the headless Transmission BitTorrent daemon.
 826
 827 -          Transmission daemon can be controlled via the RPC interface using
 828 -          transmission-remote or the WebUI (http://localhost:9091/ by default).
 829 +        Transmission daemon can be controlled via the RPC interface using
 830 +        transmission-remote, the WebUI (http://127.0.0.1:9091/ by default),
 831 +        or other clients like stig or tremc.
 832
 833 -          Torrents are downloaded to ${downloadDir} by default and are
 834 -          accessible to users in the "transmission" group.
 835 -        '';
 836 -      };
 837 +        Torrents are downloaded to ${homeDir}/${downloadsDir} by default and are
 838 +        accessible to users in the "transmission" group'';
 839
 840 -      settings = mkOption {
 841 +      settings = mkOption rec {
 842 +        # TODO: switch to types.config.json as prescribed by RFC0042 once it's implemented
 843          type = types.attrs;
 844 +        apply = recursiveUpdate default;
 845          default =
 846            {
 847 -            download-dir = downloadDir;
 848 -            incomplete-dir = incompleteDir;
 849 +            download-dir = "${cfg.home}/${downloadsDir}";
 850 +            incomplete-dir = "${cfg.home}/${incompleteDir}";
 851              incomplete-dir-enabled = true;
 852 +            message-level = 1;
 853 +            peer-port = 51413;
 854 +            peer-port-random-high = 65535;
 855 +            peer-port-random-low = 49152;
 856 +            peer-port-random-on-start = false;
 857 +            rpc-bind-address = "127.0.0.1";
 858 +            rpc-port = 9091;
 859 +            script-torrent-done-enabled = false;
 860 +            script-torrent-done-filename = "";
 861 +            umask = 2; # 0o002 in decimal as expected by Transmission
 862 +            utp-enabled = true;
 863            };
 864          example =
 865            {
 866 @@ -56,11 +55,12 @@ in
 867              rpc-whitelist = "127.0.0.1,192.168.*.*";
 868            };
 869          description = ''
 870 -          Attribute set whos fields overwrites fields in settings.json (each
 871 -          time the service starts). String values must be quoted, integer and
 872 +          Attribute set whose fields overwrites fields in
 873 +          <literal>.config/transmission-daemon/settings.json</literal>
 874 +          (each time the service starts). String values must be quoted, integer and
 875            boolean values must not.
 876
 877 -          See https://github.com/transmission/transmission/wiki/Editing-Configuration-Files
 878 +          See <link xlink:href="https://github.com/transmission/transmission/wiki/Editing-Configuration-Files">Transmission's Wiki</link>
 879            for documentation.
 880          '';
 881        };
 882 @@ -70,22 +70,32 @@ in
 883          default = "770";
 884          example = "775";
 885          description = ''
 886 -          The permissions to set for download-dir and incomplete-dir.
 887 -          They will be applied on every service start.
 888 +          The permissions set by <literal>systemd.activationScripts.transmission-daemon</literal>
 889 +          on the directories <link linkend="opt-services.transmission.settings">settings.download-dir</link>
 890 +          and <link linkend="opt-services.transmission.settings">settings.incomplete-dir</link>.
 891 +          Note that you may also want to change
 892 +          <link linkend="opt-services.transmission.settings">settings.umask</link>.
 893          '';
 894        };
 895
 896        port = mkOption {
 897 -        type = types.int;
 898 -        default = 9091;
 899 -        description = "TCP port number to run the RPC/web interface.";
 900 +        type = types.port;
 901 +        description = ''
 902 +          TCP port number to run the RPC/web interface.
 903 +
 904 +          If instead you want to change the peer port,
 905 +          use <link linkend="opt-services.transmission.settings">settings.peer-port</link>
 906 +          or <link linkend="opt-services.transmission.settings">settings.peer-port-random-on-start</link>.
 907 +        '';
 908        };
 909
 910        home = mkOption {
 911          type = types.path;
 912 -        default = "/var/lib/transmission";
 913 +        default = homeDir;
 914          description = ''
 915 -          The directory where transmission will create files.
 916 +          The directory where Transmission will create <literal>${settingsDir}</literal>.
 917 +          as well as <literal>${downloadsDir}/</literal> unless <link linkend="opt-services.transmission.settings">settings.download-dir</link> is changed,
 918 +          and <literal>${incompleteDir}/</literal> unless <link linkend="opt-services.transmission.settings">settings.incomplete-dir</link> is changed.
 919          '';
 920        };
 921
 922 @@ -100,32 +110,173 @@ in
 923          default = "transmission";
 924          description = "Group account under which Transmission runs.";
 925        };
 926 +
 927 +      credentialsFile = mkOption {
 928 +        type = types.path;
 929 +        description = ''
 930 +          Path to a JSON file to be merged with the settings.
 931 +          Useful to merge a file which is better kept out of the Nix store
 932 +          because it contains sensible data like <link linkend="opt-services.transmission.settings">settings.rpc-password</link>.
 933 +        '';
 934 +        default = "/dev/null";
 935 +        example = "/var/lib/secrets/transmission/settings.json";
 936 +      };
 937 +
 938 +      openFirewall = mkEnableOption "opening of the peer port(s) in the firewall";
 939 +
 940 +      performanceNetParameters = mkEnableOption ''tweaking of kernel parameters
 941 +        to open many more connections at the same time.
 942 +
 943 +        Note that you may also want to increase
 944 +        <link linkend="opt-services.transmission.settings">settings.peer-limit-global</link>.
 945 +        And be aware that these settings are quite aggressive
 946 +        and might not suite your regular desktop use.
 947 +        For instance, SSH sessions may time out more easily'';
 948      };
 949    };
 950
 951    config = mkIf cfg.enable {
 952 -    systemd.tmpfiles.rules = [
 953 -      "d '${homeDir}' 0770 '${cfg.user}' '${cfg.group}' - -"
 954 -      "d '${settingsDir}' 0700 '${cfg.user}' '${cfg.group}' - -"
 955 -      "d '${fullSettings.download-dir}' '${downloadDirPermissions}' '${cfg.user}' '${cfg.group}' - -"
 956 -      "d '${fullSettings.incomplete-dir}' '${downloadDirPermissions}' '${cfg.user}' '${cfg.group}' - -"
 957 +    # Note that using systemd.tmpfiles would not work here
 958 +    # because it would fail when creating a directory
 959 +    # with a different owner than its parent directory, by saying:
 960 +    # Detected unsafe path transition /home/foo → /home/foo/Downloads during canonicalization of /home/foo/Downloads
 961 +    # when /home/foo is not owned by cfg.user.
 962 +    # Note also that using an ExecStartPre= wouldn't work either
 963 +    # because BindPaths= needs these directories before.
 964 +    system.activationScripts.transmission-daemon = ''
 965 +      install -D -d -m 700 '${cfg.home}/${settingsDir}'
 966 +      chown -R '${cfg.user}:${cfg.group}' ${cfg.home}/${settingsDir}
 967 +      install -D -d -m '${cfg.downloadDirPermissions}' -o '${cfg.user}' -g '${cfg.group}' '${cfg.settings.download-dir}'
 968 +      '' + optionalString cfg.settings.incomplete-dir-enabled ''
 969 +      install -D -d -m '${cfg.downloadDirPermissions}' -o '${cfg.user}' -g '${cfg.group}' '${cfg.settings.incomplete-dir}'
 970 +      '';
 971 +
 972 +    assertions = [
 973 +      { assertion = builtins.match "^/.*" cfg.home != null;
 974 +        message = "`services.transmission.home' must be an absolute path.";
 975 +      }
 976 +      { assertion = types.path.check cfg.settings.download-dir;
 977 +        message = "`services.transmission.settings.download-dir' must be an absolute path.";
 978 +      }
 979 +      { assertion = types.path.check cfg.settings.incomplete-dir;
 980 +        message = "`services.transmission.settings.incomplete-dir' must be an absolute path.";
 981 +      }
 982 +      { assertion = cfg.settings.script-torrent-done-filename == "" || types.path.check cfg.settings.script-torrent-done-filename;
 983 +        message = "`services.transmission.settings.script-torrent-done-filename' must be an absolute path.";
 984 +      }
 985 +      { assertion = types.port.check cfg.settings.rpc-port;
 986 +        message = "${toString cfg.settings.rpc-port} is not a valid port number for `services.transmission.settings.rpc-port`.";
 987 +      }
 988 +      # In case both port and settings.rpc-port are explicitely defined: they must be the same.
 989 +      { assertion = !options.services.transmission.port.isDefined || cfg.port == cfg.settings.rpc-port;
 990 +        message = "`services.transmission.port' is not equal to `services.transmission.settings.rpc-port'";
 991 +      }
 992      ];
 993
 994 +    services.transmission.settings =
 995 +      optionalAttrs options.services.transmission.port.isDefined { rpc-port = cfg.port; };
 996 +
 997      systemd.services.transmission = {
 998        description = "Transmission BitTorrent Service";
 999        after = [ "network.target" ] ++ optional apparmor "apparmor.service";
1000 -      requires = mkIf apparmor [ "apparmor.service" ];
1001 +      requires = optional apparmor "apparmor.service";
1002        wantedBy = [ "multi-user.target" ];
1003 +      environment.CURL_CA_BUNDLE = etc."ssl/certs/ca-certificates.crt".source;
1004
1005 -      # 1) Only the "transmission" user and group have access to torrents.
1006 -      # 2) Optionally update/force specific fields into the configuration file.
1007 -      serviceConfig.ExecStartPre = preStart;
1008 -      serviceConfig.ExecStart = "${pkgs.transmission}/bin/transmission-daemon -f --port ${toString config.services.transmission.port} --config-dir ${settingsDir}";
1009 -      serviceConfig.ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
1010 -      serviceConfig.User = cfg.user;
1011 -      serviceConfig.Group = cfg.group;
1012 -      # NOTE: transmission has an internal umask that also must be set (in settings.json)
1013 -      serviceConfig.UMask = "0002";
1014 +      serviceConfig = {
1015 +        # Use "+" because credentialsFile may not be accessible to User= or Group=.
1016 +        ExecStartPre = "+" + pkgs.writeShellScript "transmission-prestart" ''
1017 +          set -eu${lib.optionalString (cfg.settings.message-level >= 3) "x"}
1018 +          ${pkgs.jq}/bin/jq --slurp add ${settingsFile} '${cfg.credentialsFile}' |
1019 +          install -D -m 600 -o '${cfg.user}' -g '${cfg.group}' /dev/stdin \
1020 +           '${cfg.home}/${settingsDir}/settings.json'
1021 +        '';
1022 +        ExecStart="${pkgs.transmission}/bin/transmission-daemon -f";
1023 +        ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
1024 +        User = cfg.user;
1025 +        Group = cfg.group;
1026 +        # Create rootDir in the host's mount namespace.
1027 +        RuntimeDirectory = [(baseNameOf rootDir)];
1028 +        RuntimeDirectoryMode = "755";
1029 +        # Avoid mounting rootDir in the own rootDir of ExecStart='s mount namespace.
1030 +        InaccessiblePaths = ["-+${rootDir}"];
1031 +        # This is for BindPaths= and BindReadOnlyPaths=
1032 +        # to allow traversal of directories they create in RootDirectory=.
1033 +        UMask = "0066";
1034 +        # Using a RootDirectory= allows to use the same paths download-dir/incomplete-dir
1035 +        # (which appear in user's interfaces) without requiring cfg.user
1036 +        # to have access to their parent directories,
1037 +        # by using BindPaths=/BindReadOnlyPaths=.
1038 +        # Note that TemporaryFileSystem= could have been used instead
1039 +        # but not without adding some BindPaths=/BindReadOnlyPaths=
1040 +        # that would only be needed for ExecStartPre=,
1041 +        # because RootDirectoryStartOnly=true would not help.
1042 +        RootDirectory = rootDir;
1043 +        RootDirectoryStartOnly = true;
1044 +        MountAPIVFS = true;
1045 +        BindPaths =
1046 +          [ "${cfg.home}/${settingsDir}"
1047 +            cfg.settings.download-dir
1048 +          ] ++
1049 +          optional cfg.settings.incomplete-dir-enabled
1050 +            cfg.settings.incomplete-dir;
1051 +        BindReadOnlyPaths = [
1052 +          # No confinement done of /nix/store here like in systemd-confinement.nix,
1053 +          # an AppArmor profile is provided to get a confinement based upon paths and rights.
1054 +          builtins.storeDir
1055 +          "-/etc/hosts"
1056 +          "-/etc/ld-nix.so.preload"
1057 +          "-/etc/localtime"
1058 +          ] ++
1059 +          optional (cfg.settings.script-torrent-done-enabled &&
1060 +                    cfg.settings.script-torrent-done-filename != "")
1061 +            cfg.settings.script-torrent-done-filename;
1062 +        # The following options are only for optimizing:
1063 +        # systemd-analyze security transmission
1064 +        AmbientCapabilities = "";
1065 +        CapabilityBoundingSet = "";
1066 +        # ProtectClock= adds DeviceAllow=char-rtc r
1067 +        DeviceAllow = "";
1068 +        LockPersonality = true;
1069 +        MemoryDenyWriteExecute = true;
1070 +        NoNewPrivileges = true;
1071 +        PrivateDevices = true;
1072 +        PrivateMounts = true;
1073 +        PrivateNetwork = false;
1074 +        PrivateTmp = true;
1075 +        PrivateUsers = true;
1076 +        ProtectClock = true;
1077 +        ProtectControlGroups = true;
1078 +        # ProtectHome=true would not allow BindPaths= to work accross /home,
1079 +        # and ProtectHome=tmpfs would break statfs(),
1080 +        # preventing transmission-daemon to report the available free space.
1081 +        # However, RootDirectory= is used, so this is not a security concern
1082 +        # since there would be nothing in /home but any BindPaths= wanted by the user.
1083 +        ProtectHome = "read-only";
1084 +        ProtectHostname = true;
1085 +        ProtectKernelLogs = true;
1086 +        ProtectKernelModules = true;
1087 +        ProtectKernelTunables = true;
1088 +        ProtectSystem = "strict";
1089 +        RemoveIPC = true;
1090 +        # AF_UNIX may become usable one day:
1091 +        # https://github.com/transmission/transmission/issues/441
1092 +        RestrictAddressFamilies = [ "AF_UNIX" "AF_INET" "AF_INET6" ];
1093 +        RestrictNamespaces = true;
1094 +        RestrictRealtime = true;
1095 +        RestrictSUIDSGID = true;
1096 +        SystemCallFilter = [
1097 +          "@system-service"
1098 +          # Groups in @system-service which do not contain a syscall
1099 +          # listed by perf -e 'syscalls:sys_enter_*' transmission-daemon -f
1100 +          # in tests, and seem likely not necessary for transmission-daemon.
1101 +          "~@aio" "~@chown" "~@keyring" "~@memlock" "~@resources" "~@setuid" "~@timer"
1102 +          # In the @privileged group, but reached when querying infos through RPC (eg. with stig).
1103 +          "quotactl"
1104 +        ];
1105 +        SystemCallArchitectures = "native";
1106 +        SystemCallErrorNumber = "EPERM";
1107 +      };
1108      };
1109
1110      # It's useful to have transmission in path, e.g. for remote control
1111 @@ -133,70 +284,137 @@ in
1112
1113      users.users = optionalAttrs (cfg.user == "transmission") ({
1114        transmission = {
1115 -        name = "transmission";
1116          group = cfg.group;
1117          uid = config.ids.uids.transmission;
1118          description = "Transmission BitTorrent user";
1119 -        home = homeDir;
1120 -        createHome = true;
1121 +        home = cfg.home;
1122        };
1123      });
1124
1125      users.groups = optionalAttrs (cfg.group == "transmission") ({
1126        transmission = {
1127 -        name = "transmission";
1128          gid = config.ids.gids.transmission;
1129        };
1130      });
1131
1132 -    # AppArmor profile
1133 -    security.apparmor.profiles = mkIf apparmor [
1134 -      (pkgs.writeText "apparmor-transmission-daemon" ''
1135 -        #include <tunables/global>
1136 +    networking.firewall = mkIf cfg.openFirewall (
1137 +      if cfg.settings.peer-port-random-on-start
1138 +      then
1139 +        { allowedTCPPortRanges =
1140 +            [ { from = cfg.settings.peer-port-random-low;
1141 +                to   = cfg.settings.peer-port-random-high;
1142 +              }
1143 +            ];
1144 +          allowedUDPPortRanges =
1145 +            [ { from = cfg.settings.peer-port-random-low;
1146 +                to   = cfg.settings.peer-port-random-high;
1147 +              }
1148 +            ];
1149 +        }
1150 +      else
1151 +        { allowedTCPPorts = [ cfg.settings.peer-port ];
1152 +          allowedUDPPorts = [ cfg.settings.peer-port ];
1153 +        }
1154 +    );
1155 +
1156 +    boot.kernel.sysctl = mkMerge [
1157 +      # Transmission uses a single UDP socket in order to implement multiple uTP sockets,
1158 +      # and thus expects large kernel buffers for the UDP socket,
1159 +      # https://trac.transmissionbt.com/browser/trunk/libtransmission/tr-udp.c?rev=11956.
1160 +      # at least up to the values hardcoded here:
1161 +      (mkIf cfg.settings.utp-enabled {
1162 +        "net.core.rmem_max" = mkDefault "4194304"; # 4MB
1163 +        "net.core.wmem_max" = mkDefault "1048576"; # 1MB
1164 +      })
1165 +      (mkIf cfg.performanceNetParameters {
1166 +        # Increase the number of available source (local) TCP and UDP ports to 49151.
1167 +        # Usual default is 32768 60999, ie. 28231 ports.
1168 +        # Find out your current usage with: ss -s
1169 +        "net.ipv4.ip_local_port_range" = "16384 65535";
1170 +        # Timeout faster generic TCP states.
1171 +        # Usual default is 600.
1172 +        # Find out your current usage with: watch -n 1 netstat -nptuo
1173 +        "net.netfilter.nf_conntrack_generic_timeout" = 60;
1174 +        # Timeout faster established but inactive connections.
1175 +        # Usual default is 432000.
1176 +        "net.netfilter.nf_conntrack_tcp_timeout_established" = 600;
1177 +        # Clear immediately TCP states after timeout.
1178 +        # Usual default is 120.
1179 +        "net.netfilter.nf_conntrack_tcp_timeout_time_wait" = 1;
1180 +        # Increase the number of trackable connections.
1181 +        # Usual default is 262144.
1182 +        # Find out your current usage with: conntrack -C
1183 +        "net.netfilter.nf_conntrack_max" = 1048576;
1184 +      })
1185 +    ];
1186 +
1187 +    security.apparmor.policies."bin/transmission-daemon".profile = ''
1188 +        include <tunables/global>
1189
1190          ${pkgs.transmission}/bin/transmission-daemon {
1191 -          #include <abstractions/base>
1192 -          #include <abstractions/nameservice>
1193 +          include <abstractions/base>
1194 +          include <abstractions/nameservice>
1195
1196 -          ${getLib pkgs.glibc}/lib/*.so                    mr,
1197 -          ${getLib pkgs.libevent}/lib/libevent*.so*        mr,
1198 -          ${getLib pkgs.curl}/lib/libcurl*.so*             mr,
1199 -          ${getLib pkgs.openssl}/lib/libssl*.so*           mr,
1200 -          ${getLib pkgs.openssl}/lib/libcrypto*.so*        mr,
1201 -          ${getLib pkgs.zlib}/lib/libz*.so*                mr,
1202 -          ${getLib pkgs.libssh2}/lib/libssh2*.so*          mr,
1203 -          ${getLib pkgs.systemd}/lib/libsystemd*.so*       mr,
1204 -          ${getLib pkgs.xz}/lib/liblzma*.so*               mr,
1205 -          ${getLib pkgs.libgcrypt}/lib/libgcrypt*.so*      mr,
1206 -          ${getLib pkgs.libgpgerror}/lib/libgpg-error*.so* mr,
1207 -          ${getLib pkgs.nghttp2}/lib/libnghttp2*.so*       mr,
1208 -          ${getLib pkgs.c-ares}/lib/libcares*.so*          mr,
1209 -          ${getLib pkgs.libcap}/lib/libcap*.so*            mr,
1210 -          ${getLib pkgs.attr}/lib/libattr*.so*             mr,
1211 -          ${getLib pkgs.lz4}/lib/liblz4*.so*               mr,
1212 -          ${getLib pkgs.libkrb5}/lib/lib*.so*              mr,
1213 -          ${getLib pkgs.keyutils}/lib/libkeyutils*.so*     mr,
1214 -          ${getLib pkgs.utillinuxMinimal.out}/lib/libblkid.so.* mr,
1215 -          ${getLib pkgs.utillinuxMinimal.out}/lib/libmount.so.* mr,
1216 -          ${getLib pkgs.utillinuxMinimal.out}/lib/libuuid.so.* mr,
1217 -          ${getLib pkgs.gcc.cc.lib}/lib/libstdc++.so.* mr,
1218 -          ${getLib pkgs.gcc.cc.lib}/lib/libgcc_s.so.* mr,
1219 +          mr ${getLib pkgs.stdenv.cc.cc}/lib/*.so*,
1220 +          mr ${getLib pkgs.stdenv.cc.libc}/lib/*.so*,
1221 +          mr ${getLib pkgs.attr}/lib/libattr*.so*,
1222 +          mr ${getLib pkgs.c-ares}/lib/libcares*.so*,
1223 +          mr ${getLib pkgs.curl}/lib/libcurl*.so*,
1224 +          mr ${getLib pkgs.keyutils}/lib/libkeyutils*.so*,
1225 +          mr ${getLib pkgs.libcap}/lib/libcap*.so*,
1226 +          mr ${getLib pkgs.libevent}/lib/libevent*.so*,
1227 +          mr ${getLib pkgs.libgcrypt}/lib/libgcrypt*.so*,
1228 +          mr ${getLib pkgs.libgpgerror}/lib/libgpg-error*.so*,
1229 +          mr ${getLib pkgs.libkrb5}/lib/lib*.so*,
1230 +          mr ${getLib pkgs.libssh2}/lib/libssh2*.so*,
1231 +          mr ${getLib pkgs.lz4}/lib/liblz4*.so*,
1232 +          mr ${getLib pkgs.nghttp2}/lib/libnghttp2*.so*,
1233 +          mr ${getLib pkgs.openssl}/lib/libcrypto*.so*,
1234 +          mr ${getLib pkgs.openssl}/lib/libssl*.so*,
1235 +          mr ${getLib pkgs.systemd}/lib/libsystemd*.so*,
1236 +          mr ${getLib pkgs.utillinuxMinimal.out}/lib/libblkid.so*,
1237 +          mr ${getLib pkgs.utillinuxMinimal.out}/lib/libmount.so*,
1238 +          mr ${getLib pkgs.utillinuxMinimal.out}/lib/libuuid.so*,
1239 +          mr ${getLib pkgs.xz}/lib/liblzma*.so*,
1240 +          mr ${getLib pkgs.zlib}/lib/libz*.so*,
1241
1242 -          @{PROC}/sys/kernel/random/uuid   r,
1243 -          @{PROC}/sys/vm/overcommit_memory r,
1244 +          r @{PROC}/sys/kernel/random/uuid,
1245 +          r @{PROC}/sys/vm/overcommit_memory,
1246 +          # @{pid} is not a kernel variable yet but a regexp
1247 +          #r @{PROC}/@{pid}/environ,
1248 +          r @{PROC}/@{pid}/mounts,
1249 +          rwk /tmp/tr_session_id_*,
1250
1251 -          ${pkgs.openssl.out}/etc/**                     r,
1252 -          ${pkgs.transmission}/share/transmission/** r,
1253 +          r ${pkgs.openssl.out}/etc/**,
1254 +          r ${config.systemd.services.transmission.environment.CURL_CA_BUNDLE},
1255 +          r ${pkgs.transmission}/share/transmission/**,
1256
1257 -          owner ${settingsDir}/** rw,
1258 -
1259 -          ${fullSettings.download-dir}/** rw,
1260 -          ${optionalString fullSettings.incomplete-dir-enabled ''
1261 -            ${fullSettings.incomplete-dir}/** rw,
1262 +          owner rw ${cfg.home}/${settingsDir}/**,
1263 +          rw ${cfg.settings.download-dir}/**,
1264 +          ${optionalString cfg.settings.incomplete-dir-enabled ''
1265 +            rw ${cfg.settings.incomplete-dir}/**,
1266            ''}
1267 +          profile dirs {
1268 +            rw ${cfg.settings.download-dir}/**,
1269 +            ${optionalString cfg.settings.incomplete-dir-enabled ''
1270 +              rw ${cfg.settings.incomplete-dir}/**,
1271 +            ''}
1272 +          }
1273 +
1274 +          ${optionalString (cfg.settings.script-torrent-done-enabled &&
1275 +                            cfg.settings.script-torrent-done-filename != "") ''
1276 +            # Stack transmission_directories profile on top of
1277 +            # any existing profile for script-torrent-done-filename
1278 +            # FIXME: to be tested as I'm not sure it works well with NoNewPrivileges=
1279 +            # https://gitlab.com/apparmor/apparmor/-/wikis/AppArmorStacking#seccomp-and-no_new_privs
1280 +            px ${cfg.settings.script-torrent-done-filename} -> &@{dirs},
1281 +          ''}
1282 +
1283 +          # FIXME: enable customizing using https://github.com/NixOS/nixpkgs/pull/93457
1284 +          # include <local/transmission-daemon>
1285          }
1286 -      '')
1287 -    ];
1288 +    '';
1289    };
1290
1291 +  meta.maintainers = with lib.maintainers; [ julm ];
1292  }
1293 diff --git a/nixos/modules/virtualisation/lxc.nix b/nixos/modules/virtualisation/lxc.nix
1294 index f484d5ee59a..a2f4a9867c6 100644
1295 --- a/nixos/modules/virtualisation/lxc.nix
1296 +++ b/nixos/modules/virtualisation/lxc.nix
1297 @@ -74,9 +74,13 @@ in
1298      systemd.tmpfiles.rules = [ "d /var/lib/lxc/rootfs 0755 root root -" ];
1299
1300      security.apparmor.packages = [ pkgs.lxc ];
1301 -    security.apparmor.profiles = [
1302 -      "${pkgs.lxc}/etc/apparmor.d/lxc-containers"
1303 -      "${pkgs.lxc}/etc/apparmor.d/usr.bin.lxc-start"
1304 -    ];
1305 +    security.apparmor.policies = {
1306 +      "bin/lxc-start".profile = ''
1307 +        #include ${pkgs.lxc}/etc/apparmor.d/usr.bin.lxc-start
1308 +      '';
1309 +      "lxc-containers".profile = ''
1310 +        #include ${pkgs.lxc}/etc/apparmor.d/lxc-containers
1311 +      '';
1312 +    };
1313    };
1314  }
1315 diff --git a/nixos/modules/virtualisation/lxd.nix b/nixos/modules/virtualisation/lxd.nix
1316 index 3958fc2c1d7..84c8e88f8b4 100644
1317 --- a/nixos/modules/virtualisation/lxd.nix
1318 +++ b/nixos/modules/virtualisation/lxd.nix
1319 @@ -93,11 +93,15 @@ in
1320
1321      security.apparmor = {
1322        enable = true;
1323 -      profiles = [
1324 -        "${cfg.lxcPackage}/etc/apparmor.d/usr.bin.lxc-start"
1325 -        "${cfg.lxcPackage}/etc/apparmor.d/lxc-containers"
1326 -      ];
1327        packages = [ cfg.lxcPackage ];
1328 +      policies = {
1329 +        "bin/lxc-start".profile = ''
1330 +          #include ${cfg.lxcPackage}/etc/apparmor.d/usr.bin.lxc-start
1331 +        '';
1332 +        "lxc-containers".profile = ''
1333 +          #include ${cfg.lxcPackage}/etc/apparmor.d/lxc-containers
1334 +        '';
1335 +      };
1336      };
1337
1338      systemd.services.lxd = {
1339 diff --git a/nixos/tests/bittorrent.nix b/nixos/tests/bittorrent.nix
1340 index 0a97d5556a2..c195b60cd56 100644
1341 --- a/nixos/tests/bittorrent.nix
1342 +++ b/nixos/tests/bittorrent.nix
1343 @@ -19,6 +19,7 @@ let
1344    externalClient2Address = "80.100.100.2";
1345    externalTrackerAddress = "80.100.100.3";
1346
1347 +  download-dir = "/var/lib/transmission/Downloads";
1348    transmissionConfig = { ... }: {
1349      environment.systemPackages = [ pkgs.transmission ];
1350      services.transmission = {
1351 @@ -26,6 +27,7 @@ let
1352        settings = {
1353          dht-enabled = false;
1354          message-level = 3;
1355 +        inherit download-dir;
1356        };
1357      };
1358    };
1359 @@ -117,12 +119,12 @@ in
1360        router.wait_for_unit("miniupnpd")
1361
1362        # Create the torrent.
1363 -      tracker.succeed("mkdir /tmp/data")
1364 +      tracker.succeed("mkdir ${download-dir}/data")
1365        tracker.succeed(
1366 -          "cp ${file} /tmp/data/test.tar.bz2"
1367 +          "cp ${file} ${download-dir}/data/test.tar.bz2"
1368        )
1369        tracker.succeed(
1370 -          "transmission-create /tmp/data/test.tar.bz2 --private --tracker http://${externalTrackerAddress}:6969/announce --outfile /tmp/test.torrent"
1371 +          "transmission-create ${download-dir}/data/test.tar.bz2 --private --tracker http://${externalTrackerAddress}:6969/announce --outfile /tmp/test.torrent"
1372        )
1373        tracker.succeed("chmod 644 /tmp/test.torrent")
1374
1375 @@ -133,18 +135,16 @@ in
1376
1377        # Start the initial seeder.
1378        tracker.succeed(
1379 -          "transmission-remote --add /tmp/test.torrent --no-portmap --no-dht --download-dir /tmp/data"
1380 +          "transmission-remote --add /tmp/test.torrent --no-portmap --no-dht --download-dir ${download-dir}/data"
1381        )
1382
1383        # Now we should be able to download from the client behind the NAT.
1384        tracker.wait_for_unit("httpd")
1385        client1.wait_for_unit("network-online.target")
1386 +      client1.succeed("transmission-remote --add http://${externalTrackerAddress}/test.torrent >&2 &")
1387 +      client1.wait_for_file("${download-dir}/test.tar.bz2")
1388        client1.succeed(
1389 -          "transmission-remote --add http://${externalTrackerAddress}/test.torrent --download-dir /tmp >&2 &"
1390 -      )
1391 -      client1.wait_for_file("/tmp/test.tar.bz2")
1392 -      client1.succeed(
1393 -          "cmp /tmp/test.tar.bz2 ${file}"
1394 +          "cmp ${download-dir}/test.tar.bz2 ${file}"
1395        )
1396
1397        # Bring down the initial seeder.
1398 @@ -154,11 +154,11 @@ in
1399        # the first client created a NAT hole in the router.
1400        client2.wait_for_unit("network-online.target")
1401        client2.succeed(
1402 -          "transmission-remote --add http://${externalTrackerAddress}/test.torrent --no-portmap --no-dht --download-dir /tmp >&2 &"
1403 +          "transmission-remote --add http://${externalTrackerAddress}/test.torrent --no-portmap --no-dht >&2 &"
1404        )
1405 -      client2.wait_for_file("/tmp/test.tar.bz2")
1406 +      client2.wait_for_file("${download-dir}/test.tar.bz2")
1407        client2.succeed(
1408 -          "cmp /tmp/test.tar.bz2 ${file}"
1409 +          "cmp ${download-dir}/test.tar.bz2 ${file}"
1410        )
1411      '';
1412  })
1413 diff --git a/pkgs/os-specific/linux/apparmor/default.nix b/pkgs/os-specific/linux/apparmor/default.nix
1414 index 807ab4fa44b..fa7cded9aed 100644
1415 --- a/pkgs/os-specific/linux/apparmor/default.nix
1416 +++ b/pkgs/os-specific/linux/apparmor/default.nix
1417 @@ -10,6 +10,10 @@
1418  , pam
1419  , libnotify
1420  , buildPackages
1421 +, coreutils
1422 +, gnugrep
1423 +, gnused
1424 +, writeShellScript
1425  }:
1426
1427  let
1428 @@ -38,6 +42,22 @@ let
1429      sha256 = "0xw028iqp69j9mxv0kbwraplgkj5i5djdlgf0anpkc5cdbsf96r9";
1430    };
1431
1432 +  aa-teardown = writeShellScript "aa-teardown" ''
1433 +    SECURITYFS=/sys/kernel/security
1434 +    SFS_MOUNTPOINT="$SECURITYFS/apparmor"
1435 +    ${gnused}/bin/sed -e "s/ (\(enforce\|complain\))$//" "$SFS_MOUNTPOINT/profiles" | \
1436 +    LC_COLLATE=C ${coreutils}/bin/sort | ${gnugrep}/bin/grep -v // | {
1437 +      while read -r profile ; do
1438 +        printf "%s" "$profile" > "$SFS_MOUNTPOINT/.remove"
1439 +        rc=$?
1440 +        if [ "$rc" -ne 0 ] ; then
1441 +          retval=$rc
1442 +        fi
1443 +      done
1444 +      exit "''${retval:-0}"
1445 +    }
1446 +  '';
1447 +
1448    prePatchCommon = ''
1449      patch -p1 < ${gnumake43Patch}
1450      chmod a+x ./common/list_capabilities.sh ./common/list_af_names.sh
1451 @@ -145,6 +165,8 @@ let
1452        # aa-notify checks its name and does not work named ".aa-notify-wrapped"
1453        mv $out/bin/aa-notify $out/bin/aa-notify-wrapped
1454        makeWrapper ${perl}/bin/perl $out/bin/aa-notify --set PERL5LIB ${libapparmor}/${perl.libPrefix} --add-flags $out/bin/aa-notify-wrapped
1455 +
1456 +      ln -s ${aa-teardown} $out/bin/aa-teardown
1457      '';
1458
1459      inherit doCheck;