pyrox.dev
1# Configuration for the xfs_quota command
2
3{ config, lib, pkgs, ... }:
4
5with lib;
6
7let
8
9 cfg = config.programs.xfs_quota;
10
11 limitOptions = opts: concatStringsSep " " [
12 (optionalString (opts.sizeSoftLimit != null) "bsoft=${opts.sizeSoftLimit}")
13 (optionalString (opts.sizeHardLimit != null) "bhard=${opts.sizeHardLimit}")
14 ];
15
16in
17
18{
19
20 ###### interface
21
22 options = {
23
24 programs.xfs_quota = {
25 projects = mkOption {
26 default = {};
27 type = types.attrsOf (types.submodule {
28 options = {
29 id = mkOption {
30 type = types.int;
31 description = "Project ID.";
32 };
33
34 fileSystem = mkOption {
35 type = types.str;
36 description = "XFS filesystem hosting the xfs_quota project.";
37 default = "/";
38 };
39
40 path = mkOption {
41 type = types.str;
42 description = "Project directory.";
43 };
44
45 sizeSoftLimit = mkOption {
46 type = types.nullOr types.str;
47 default = null;
48 example = "30g";
49 description = "Soft limit of the project size";
50 };
51
52 sizeHardLimit = mkOption {
53 type = types.nullOr types.str;
54 default = null;
55 example = "50g";
56 description = "Hard limit of the project size.";
57 };
58 };
59 });
60
61 description = "Setup of xfs_quota projects. Make sure the filesystem is mounted with the pquota option.";
62
63 example = {
64 "projname" = {
65 id = 50;
66 path = "/xfsprojects/projname";
67 sizeHardLimit = "50g";
68 };
69 };
70 };
71 };
72
73 };
74
75
76 ###### implementation
77
78 config = mkIf (cfg.projects != {}) {
79
80 environment.etc.projects.source = pkgs.writeText "etc-project"
81 (concatStringsSep "\n" (mapAttrsToList
82 (name: opts: "${toString opts.id}:${opts.path}") cfg.projects));
83
84 environment.etc.projid.source = pkgs.writeText "etc-projid"
85 (concatStringsSep "\n" (mapAttrsToList
86 (name: opts: "${name}:${toString opts.id}") cfg.projects));
87
88 systemd.services = mapAttrs' (name: opts:
89 nameValuePair "xfs_quota-${name}" {
90 description = "Setup xfs_quota for project ${name}";
91 script = ''
92 ${pkgs.xfsprogs.bin}/bin/xfs_quota -x -c 'project -s ${name}' ${opts.fileSystem}
93 ${pkgs.xfsprogs.bin}/bin/xfs_quota -x -c 'limit -p ${limitOptions opts} ${name}' ${opts.fileSystem}
94 '';
95
96 wantedBy = [ "multi-user.target" ];
97 after = [ ((replaceChars [ "/" ] [ "-" ] opts.fileSystem) + ".mount") ];
98
99 restartTriggers = [ config.environment.etc.projects.source ];
100
101 serviceConfig = {
102 Type = "oneshot";
103 RemainAfterExit = true;
104 };
105 }
106 ) cfg.projects;
107
108 };
109
110}