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# Configuration for the xfs_quota command
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.xfs_quota;
limitOptions = opts: concatStringsSep " " [
(optionalString (opts.sizeSoftLimit != null) "bsoft=${opts.sizeSoftLimit}")
(optionalString (opts.sizeHardLimit != null) "bhard=${opts.sizeHardLimit}")
];
in
{
###### interface
options = {
programs.xfs_quota = {
projects = mkOption {
default = {};
type = types.attrsOf (types.submodule {
options = {
id = mkOption {
type = types.int;
description = "Project ID.";
};
fileSystem = mkOption {
type = types.str;
description = "XFS filesystem hosting the xfs_quota project.";
default = "/";
};
path = mkOption {
type = types.str;
description = "Project directory.";
};
sizeSoftLimit = mkOption {
type = types.nullOr types.str;
default = null;
example = "30g";
description = "Soft limit of the project size";
};
sizeHardLimit = mkOption {
type = types.nullOr types.str;
default = null;
example = "50g";
description = "Hard limit of the project size.";
};
};
});
description = "Setup of xfs_quota projects. Make sure the filesystem is mounted with the pquota option.";
example = {
projname = {
id = 50;
path = "/xfsprojects/projname";
sizeHardLimit = "50g";
};
};
};
};
};
###### implementation
config = mkIf (cfg.projects != {}) {
environment.etc.projects.source = pkgs.writeText "etc-project"
(concatStringsSep "\n" (mapAttrsToList
(name: opts: "${toString opts.id}:${opts.path}") cfg.projects));
environment.etc.projid.source = pkgs.writeText "etc-projid"
(concatStringsSep "\n" (mapAttrsToList
(name: opts: "${name}:${toString opts.id}") cfg.projects));
systemd.services = mapAttrs' (name: opts:
nameValuePair "xfs_quota-${name}" {
description = "Setup xfs_quota for project ${name}";
script = ''
${pkgs.xfsprogs.bin}/bin/xfs_quota -x -c 'project -s ${name}' ${opts.fileSystem}
${pkgs.xfsprogs.bin}/bin/xfs_quota -x -c 'limit -p ${limitOptions opts} ${name}' ${opts.fileSystem}
'';
wantedBy = [ "multi-user.target" ];
after = [ ((replaceStrings [ "/" ] [ "-" ] opts.fileSystem) + ".mount") ];
restartTriggers = [ config.environment.etc.projects.source ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
};
}
) cfg.projects;
};
}
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