nixpkgs/modules/services/scheduling/fcron.nix
Eelco Dolstra e91d882a94 * Converted modules that were still using the old (concrete syntax)
style of declaring Upstart jobs.  While at it, converted them to the
  current NixOS module style and improved some option descriptions.
  Hopefully I didn't break too much :-)

svn path=/nixos/trunk/; revision=17761
2009-10-12 16:36:19 +00:00

123 lines
3.0 KiB
Nix

{ config, pkgs, ... }:
with pkgs.lib;
let
# Put all the system cronjobs together.
# TODO allow using fcron only..
#systemCronJobs =
# config.services.cron.systemCronJobs;
cfg = config.services.fcron;
queuelen = if cfg.queuelen == "" then "" else "-q ${toString cfg.queuelen}";
# shell is set to /sh in config..
# ${pkgs.lib.concatStrings (map (job: job + "\n") systemCronJobs)}
systemCronJobsFile = pkgs.writeText "fcron-systab"
''
SHELL=${pkgs.bash}/bin/sh
PATH=${pkgs.coreutils}/bin:${pkgs.findutils}/bin:${pkgs.gnused}/bin
'';
allowdeny = target: users:
{ source = pkgs.writeText "fcron.${target}" (concatStringsSep "\n" users);
target = "fcron.${target}";
mode = "600"; # fcron has some security issues.. So I guess this is most safe
};
in
{
###### interface
options = {
services.fcron = {
enable = mkOption {
default = false;
description = "Whether to enable the `fcron' daemon.";
};
allow = mkOption {
default = [];
description = ''
Users allowed to use fcrontab and fcrondyn (one name per line, "all" for everyone).
'';
};
deny = mkOption {
default = [];
description = "Users forbidden from using fcron.";
};
maxSerialJobs = mkOption {
default = 1;
description = "Maximum number of serial jobs which can run simultaneously.";
};
queuelen = mkOption {
default = "";
description = "Number of jobs the serial queue and the lavg queue can contain - empty to net set this number (-q)";
};
systab = mkOption {
default = "";
description = ''The "system" crontab contents.'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.etc =
[ (allowdeny "allow" (["root"] ++ cfg.allow))
(allowdeny "deny" cfg.deny)
# see man 5 fcron.conf
{ source = pkgs.writeText "fcon.conf" ''
fcrontabs = /var/spool/fcron
pidfile = /var/run/fcron.pid
fifofile = /var/run/fcron.fifo
fcronallow = /etc/fcron.allow
fcrondeny = /etc/fcron.deny
shell = /bin/sh
sendmail = /var/setuid-wrappers/sendmail
editor = /var/run/current-system/sw/bin/vi
'';
target = "fcron.conf";
mode = "0600"; # max allowed is 644
}
];
environment.systemPackages = [ pkgs.fcron ];
jobAttrs.fcron =
{ description = "fcron daemon";
startOn = "startup";
stopOn = "shutdown";
environment =
{ PATH = "/var/run/current-system/sw/bin";
};
preStart =
''
${pkgs.coreutils}/bin/mkdir -m 0700 -p /var/spool/fcron
# load system crontab file
${pkgs.fcron}/bin/fcrontab -u systab ${pkgs.writeText "systab" cfg.systab}
'';
exec = "${pkgs.fcron}/sbin/fcron -f -m ${toString cfg.maxSerialJobs} ${queuelen}";
};
};
}