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|
{ config, pkgs, lib, ... }:
let
inherit (lib) mkOption mkIf;
cfg = config.services.openafsClient;
cellServDB = pkgs.fetchurl {
url = http://dl.central.org/dl/cellservdb/CellServDB.2009-06-29;
sha256 = "be566f850e88130333ab8bc3462872ad90c9482e025c60a92f728b5bac1b4fa9";
};
afsConfig = pkgs.runCommand "afsconfig" {} ''
mkdir -p $out
echo ${cfg.cellName} > $out/ThisCell
cp ${cellServDB} $out/CellServDB
echo "/afs:${cfg.cacheDirectory}:${cfg.cacheSize}" > $out/cacheinfo
'';
openafsPkgs = config.boot.kernelPackages.openafsClient;
in
{
###### interface
options = {
services.openafsClient = {
enable = mkOption {
default = false;
description = "Whether to enable the OpenAFS client.";
};
cellName = mkOption {
default = "grand.central.org";
description = "Cell name.";
};
cacheSize = mkOption {
default = "100000";
description = "Cache size.";
};
cacheDirectory = mkOption {
default = "/var/cache/openafs";
description = "Cache directory.";
};
crypt = mkOption {
default = false;
description = "Whether to enable (weak) protocol encryption.";
};
sparse = mkOption {
default = false;
description = "Minimal cell list in /afs.";
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ openafsPkgs ];
environment.etc = [
{ source = afsConfig;
target = "openafs";
}
];
jobs.openafsClient =
{ name = "afsd";
description = "AFS client";
startOn = "started network-interfaces";
stopOn = "stopping network-interfaces";
preStart = ''
mkdir -p -m 0755 /afs
mkdir -m 0700 -p ${cfg.cacheDirectory}
${pkgs.module_init_tools}/sbin/insmod ${openafsPkgs}/lib/openafs/libafs-*.ko || true
${openafsPkgs}/sbin/afsd -confdir ${afsConfig} -cachedir ${cfg.cacheDirectory} ${if cfg.sparse then "-dynroot-sparse" else "-dynroot"} -fakestat -afsdb
${openafsPkgs}/bin/fs setcrypt ${if cfg.crypt then "on" else "off"}
'';
# Doing this in preStop, because after these commands AFS is basically
# stopped, so systemd has nothing to do, just noticing it. If done in
# postStop, then we get a hang + kernel oops, because AFS can't be
# stopped simply by sending signals to processes.
preStop = ''
${pkgs.utillinux}/bin/umount /afs
${openafsPkgs}/sbin/afsd -shutdown
${pkgs.module_init_tools}/sbin/rmmod libafs
'';
};
};
}
|