diff options
Diffstat (limited to 'nixos/modules/services/backup/btrbk.nix')
| -rw-r--r-- | nixos/modules/services/backup/btrbk.nix | 57 |
1 files changed, 42 insertions, 15 deletions
diff --git a/nixos/modules/services/backup/btrbk.nix b/nixos/modules/services/backup/btrbk.nix index b6eb68cc43f12..b838c174553d2 100644 --- a/nixos/modules/services/backup/btrbk.nix +++ b/nixos/modules/services/backup/btrbk.nix @@ -47,7 +47,12 @@ let then [ "${name} ${value}" ] else concatLists (mapAttrsToList (genSection name) value); - addDefaults = settings: { backend = "btrfs-progs-sudo"; } // settings; + sudo_doas = + if config.security.sudo.enable then "sudo" + else if config.security.doas.enable then "doas" + else throw "The btrbk nixos module needs either sudo or doas enabled in the configuration"; + + addDefaults = settings: { backend = "btrfs-progs-${sudo_doas}"; } // settings; mkConfigFile = name: settings: pkgs.writeTextFile { name = "btrbk-${name}.conf"; @@ -152,20 +157,41 @@ in }; config = mkIf (sshEnabled || serviceEnabled) { environment.systemPackages = [ pkgs.btrbk ] ++ cfg.extraPackages; - security.sudo.extraRules = [ - { - users = [ "btrbk" ]; - commands = [ - { command = "${pkgs.btrfs-progs}/bin/btrfs"; options = [ "NOPASSWD" ]; } - { command = "${pkgs.coreutils}/bin/mkdir"; options = [ "NOPASSWD" ]; } - { command = "${pkgs.coreutils}/bin/readlink"; options = [ "NOPASSWD" ]; } - # for ssh, they are not the same than the one hard coded in ${pkgs.btrbk} - { command = "/run/current-system/bin/btrfs"; options = [ "NOPASSWD" ]; } - { command = "/run/current-system/sw/bin/mkdir"; options = [ "NOPASSWD" ]; } - { command = "/run/current-system/sw/bin/readlink"; options = [ "NOPASSWD" ]; } + security.sudo = mkIf (sudo_doas == "sudo") { + extraRules = [ + { + users = [ "btrbk" ]; + commands = [ + { command = "${pkgs.btrfs-progs}/bin/btrfs"; options = [ "NOPASSWD" ]; } + { command = "${pkgs.coreutils}/bin/mkdir"; options = [ "NOPASSWD" ]; } + { command = "${pkgs.coreutils}/bin/readlink"; options = [ "NOPASSWD" ]; } + # for ssh, they are not the same than the one hard coded in ${pkgs.btrbk} + { command = "/run/current-system/bin/btrfs"; options = [ "NOPASSWD" ]; } + { command = "/run/current-system/sw/bin/mkdir"; options = [ "NOPASSWD" ]; } + { command = "/run/current-system/sw/bin/readlink"; options = [ "NOPASSWD" ]; } + ]; + } + ]; + }; + security.doas = mkIf (sudo_doas == "doas") { + extraRules = let + doasCmdNoPass = cmd: { users = [ "btrbk" ]; cmd = cmd; noPass = true; }; + in + [ + (doasCmdNoPass "${pkgs.btrfs-progs}/bin/btrfs") + (doasCmdNoPass "${pkgs.coreutils}/bin/mkdir") + (doasCmdNoPass "${pkgs.coreutils}/bin/readlink") + # for ssh, they are not the same than the one hard coded in ${pkgs.btrbk} + (doasCmdNoPass "/run/current-system/bin/btrfs") + (doasCmdNoPass "/run/current-system/sw/bin/mkdir") + (doasCmdNoPass "/run/current-system/sw/bin/readlink") + + # doas matches command, not binary + (doasCmdNoPass "btrfs") + (doasCmdNoPass "mkdir") + (doasCmdNoPass "readlink") ]; - } - ]; + }; users.users.btrbk = { isSystemUser = true; # ssh needs a home directory @@ -183,8 +209,9 @@ in "best-effort" = 2; "realtime" = 1; }.${cfg.ioSchedulingClass}; + sudo_doas_flag = "--${sudo_doas}"; in - ''command="${pkgs.util-linux}/bin/ionice -t -c ${toString ioniceClass} ${optionalString (cfg.niceness >= 1) "${pkgs.coreutils}/bin/nice -n ${toString cfg.niceness}"} ${pkgs.btrbk}/share/btrbk/scripts/ssh_filter_btrbk.sh --sudo ${options}" ${v.key}'' + ''command="${pkgs.util-linux}/bin/ionice -t -c ${toString ioniceClass} ${optionalString (cfg.niceness >= 1) "${pkgs.coreutils}/bin/nice -n ${toString cfg.niceness}"} ${pkgs.btrbk}/share/btrbk/scripts/ssh_filter_btrbk.sh ${sudo_doas_flag} ${options}" ${v.key}'' ) cfg.sshAccess; }; |