nixpkgs/modules/services/network-filesystems/nfsd.nix
Eelco Dolstra 2a135eb4d4 * Remove the ‘services.nfs.client.enable’ flag; use
‘boot.supportedFilesystems = [ "nfs" ]’ if needed.

svn path=/nixos/trunk/; revision=33356
2012-03-22 12:24:23 +00:00

149 lines
3.3 KiB
Nix

{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.services.nfs.server;
exports = pkgs.writeText "exports" cfg.exports;
in
{
###### interface
options = {
services.nfs = {
server = {
enable = mkOption {
default = false;
description = ''
Whether to enable the kernel's NFS server.
'';
};
exports = mkOption {
default = "";
description = ''
Contents of the /etc/exports file. See
<citerefentry><refentrytitle>exports</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for the format.
'';
};
hostName = mkOption {
default = null;
description = ''
Hostname or address on which NFS requests will be accepted.
Default is all. See the <option>-H</option> option in
<citerefentry><refentrytitle>nfsd</refentrytitle>
<manvolnum>8</manvolnum></citerefentry>.
'';
};
nproc = mkOption {
default = 8;
description = ''
Number of NFS server threads. Defaults to the recommended value of 8.
'';
};
createMountPoints = mkOption {
default = false;
description = "Whether to create the mount points in the exports file at startup time.";
};
};
};
};
###### implementation
config = mkIf cfg.enable {
services.rpcbind.enable = true;
boot.supportedFilesystems = [ "nfs" ]; # needed for statd and idmapd
environment.systemPackages = [ pkgs.nfsUtils ];
environment.etc = singleton
{ source = exports;
target = "exports";
};
boot.kernelModules = [ "nfsd" ];
jobs.nfsd =
{ description = "Kernel NFS server";
startOn = "started networking";
path = [ pkgs.nfsUtils ];
preStart =
''
ensure rpcbind
ensure mountd
# Create a state directory required by NFSv4.
mkdir -p /var/lib/nfs/v4recovery
rpc.nfsd \
${if cfg.hostName != null then "-H ${cfg.hostName}" else ""} \
${builtins.toString cfg.nproc}
'';
postStop = "rpc.nfsd 0";
postStart =
''
ensure statd
ensure idmapd
'';
};
jobs.mountd =
{ description = "Kernel NFS server - mount daemon";
path = [ pkgs.nfsUtils pkgs.sysvtools pkgs.utillinux ];
preStart =
''
ensure rpcbind
mkdir -p /var/lib/nfs
touch /var/lib/nfs/rmtab
mountpoint -q /proc/fs/nfsd || mount -t nfsd none /proc/fs/nfsd
${optionalString cfg.createMountPoints
''
# create export directories:
# skip comments, take first col which may either be a quoted
# "foo bar" or just foo (-> man export)
sed '/^#.*/d;s/^"\([^"]*\)".*/\1/;t;s/[ ].*//' ${exports} \
| xargs -d '\n' mkdir -p
''
}
# exports file is ${exports}
# keep this comment so that this job is restarted whenever exports changes!
exportfs -ra
'';
daemonType = "fork";
exec = "rpc.mountd -f /etc/exports";
};
};
}