nixpkgs/upstart-jobs/nfs-kernel.nix

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{pkgs, config, ...}:
###### interface
let
inherit (pkgs.lib) mkOption mkIf;
options = {
services = {
nfsKernel = {
enable = mkOption {
default = false;
description = "
wether to use the kernel nfs functionality to export filesystems.
You should be aware about existing security issues.
requires portmap!
";
};
exports = mkOption {
default = "/etc/exports";
description = "
the file listing the directories to be exported.
install nfsUtils and run man exports to learn about its format.
The exports setting can either be a file path or the file contents.
";
};
hostName = mkOption {
default = null;
description = "
specify a particular hostname (or address) that NFS requests will be accepted on.
Default: all.
See man rpc.nfsd (-H option)
";
};
nproc = mkOption {
default = 8;
description = "
specify the number of NFS server threads. (-> man rpc.nfsd). Defaults to recommended value 8
";
};
};
};
};
###### implementation
inherit (pkgs) writeText openssh;
cfg = (config.services.nfsKernel);
modprobe = config.system.sbin.modprobe;
exports = if builtins.pathExists cfg.exports
then cfg.export else pkgs.writeText "exports" cfg.exports;
in
mkIf config.services.nfsKernel.enable {
require = [
options
];
services = {
extraJobs = [
{
name = "nfs-kernel-exports";
job = ''
description "export filesystems using kernel nfs"
start on network-interfaces/started
stop on network-interfaces/stop
PATH=${pkgs.nfsUtils}/sbin
start script
${modprobe}/sbin/modprobe nfsd || true
exportfs -a
end script
respawn sleep 1000000
start script
exportfs -au
end script
'';
}
{
name = "nfs-kernel-rpc-nfsd";
job = ''
description "export filesystems using kernel nfs"
start on nfs-kernel-exports/started
stop on nfs-kernel-exports/stop
respawn ${pkgs.nfsUtils}/sbin/rpc.nfsd ${if cfg.hostName != null then "-H ${cfg.hostName}" else ""} ${builtins.toString cfg.nproc}
'';
}
{
name = "nfs-kernel-mountd";
job = ''
description "export filesystems using kernel nfs"
start on nfs-kernel-rpc-nfsd/started
stop on nfs-kernel-exports/stop
respawn ${pkgs.nfsUtils}/sbin/rpc.mountd -F -f ${exports}
'';
}
];
};
}