nixpkgs/nixos/modules/services/misc/autofs.nix
2021-01-24 13:17:07 +01:00

101 lines
2.6 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.autofs;
autoMaster = pkgs.writeText "auto.master" cfg.autoMaster;
in
{
###### interface
options = {
services.autofs = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Mount filesystems on demand. Unmount them automatically.
You may also be interested in afuse.
'';
};
autoMaster = mkOption {
type = types.str;
example = literalExample ''
let
mapConf = pkgs.writeText "auto" '''
kernel -ro,soft,intr ftp.kernel.org:/pub/linux
boot -fstype=ext2 :/dev/hda1
windoze -fstype=smbfs ://windoze/c
removable -fstype=ext2 :/dev/hdd
cd -fstype=iso9660,ro :/dev/hdc
floppy -fstype=auto :/dev/fd0
server -rw,hard,intr / -ro myserver.me.org:/ \
/usr myserver.me.org:/usr \
/home myserver.me.org:/home
''';
in '''
/auto file:''${mapConf}
'''
'';
description = ''
Contents of <literal>/etc/auto.master</literal> file. See <command>auto.master(5)</command> and <command>autofs(5)</command>.
'';
};
timeout = mkOption {
type = types.int;
default = 600;
description = "Set the global minimum timeout, in seconds, until directories are unmounted";
};
debug = mkOption {
type = types.bool;
default = false;
description = ''
Pass -d and -7 to automount and write log to the system journal.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
boot.kernelModules = [ "autofs4" ];
systemd.services.autofs =
{ description = "Automounts filesystems on demand";
after = [ "network.target" "ypbind.service" "sssd.service" "network-online.target" ];
wants = [ "network-online.target" ];
wantedBy = [ "multi-user.target" ];
preStart = ''
# There should be only one autofs service managed by systemd, so this should be safe.
rm -f /tmp/autofs-running
'';
serviceConfig = {
Type = "forking";
PIDFile = "/run/autofs.pid";
ExecStart = "${pkgs.autofs5}/bin/automount ${optionalString cfg.debug "-d"} -p /run/autofs.pid -t ${builtins.toString cfg.timeout} ${autoMaster}";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
};
};
};
}