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# Configuration for the xfs_quota command
{
config,
lib,
pkgs,
...
}:
let
cfg = config.programs.xfs_quota;
limitOptions =
opts:
builtins.concatStringsSep " " [
(lib.optionalString (opts.sizeSoftLimit != null) "bsoft=${opts.sizeSoftLimit}")
(lib.optionalString (opts.sizeHardLimit != null) "bhard=${opts.sizeHardLimit}")
];
in
{
###### interface
options = {
programs.xfs_quota = {
projects = lib.mkOption {
default = { };
type = lib.types.attrsOf (
lib.types.submodule {
options = {
id = lib.mkOption {
type = lib.types.int;
description = "Project ID.";
};
fileSystem = lib.mkOption {
type = lib.types.str;
description = "XFS filesystem hosting the xfs_quota project.";
default = "/";
};
path = lib.mkOption {
type = lib.types.str;
description = "Project directory.";
};
sizeSoftLimit = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
example = "30g";
description = "Soft limit of the project size";
};
sizeHardLimit = lib.mkOption {
type = lib.types.nullOr lib.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 = lib.mkIf (cfg.projects != { }) {
environment.etc.projects.source = pkgs.writeText "etc-project" (
builtins.concatStringsSep "\n" (
lib.mapAttrsToList (name: opts: "${toString opts.id}:${opts.path}") cfg.projects
)
);
environment.etc.projid.source = pkgs.writeText "etc-projid" (
builtins.concatStringsSep "\n" (
lib.mapAttrsToList (name: opts: "${name}:${toString opts.id}") cfg.projects
)
);
systemd.services = lib.mapAttrs' (
name: opts:
lib.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 = [ ((builtins.replaceStrings [ "/" ] [ "-" ] opts.fileSystem) + ".mount") ];
restartTriggers = [ config.environment.etc.projects.source ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
};
}
) cfg.projects;
};
}
|
