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|
{ config, pkgs, ... }:
with pkgs.lib;
let
inherit (pkgs) writeText openssh;
cfg = config.services.nfsKernel;
exports = pkgs.writeText "exports" cfg.server.exports;
in
{
###### interface
options = {
services.nfsKernel = {
client.enable = mkOption {
default = any (fs: fs.fsType == "nfs" || fs.fsType == "nfs4") config.fileSystems;
description = ''
Whether to enable the kernel's NFS client daemons.
'';
};
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 =
mkAssert
(cfg.client.enable || cfg.server.enable -> config.services.portmap.enable) "
Please enable portmap (services.portmap.enable) to use nfs-kernel.
" {
services.portmap.enable = mkAlways (cfg.client.enable || cfg.server.enable);
environment.etc = mkIf cfg.server.enable (singleton
{ source = exports;
target = "exports";
});
jobs =
optionalAttrs cfg.server.enable
{ nfs_kernel_exports =
{ name = "nfs-kernel-exports";
description = "Kernel NFS server";
startOn = "started network-interfaces";
preStart =
''
export PATH=${pkgs.nfsUtils}/sbin:$PATH
mkdir -p /var/lib/nfs
${config.system.sbin.modprobe}/sbin/modprobe nfsd || true
${pkgs.sysvtools}/bin/mountpoint -q /proc/fs/nfsd \
|| ${config.system.sbin.mount}/bin/mount -t nfsd none /proc/fs/nfsd
${optionalString cfg.server.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
'';
};
}
// optionalAttrs cfg.server.enable
{ nfs_kernel_nfsd =
{ name = "nfs-kernel-nfsd";
description = "Kernel NFS server";
startOn = "started nfs-kernel-exports and started nfs-kernel-mountd and started nfs-kernel-statd and started portmap";
stopOn = "stopping nfs-kernel-exports";
preStart =
''
# Create a state directory required by NFSv4.
mkdir -p /var/lib/nfs/v4recovery
${pkgs.nfsUtils}/sbin/rpc.nfsd \
${if cfg.server.hostName != null then "-H ${cfg.server.hostName}" else ""} \
${builtins.toString cfg.server.nproc}
'';
postStop = "${pkgs.nfsUtils}/sbin/rpc.nfsd 0";
};
}
// optionalAttrs cfg.server.enable
{ nfs_kernel_mountd =
{ name = "nfs-kernel-mountd";
description = "Kernel NFS server - mount daemon";
startOn = "started portmap and started nfs-kernel-exports";
stopOn = "stopped nfs-kernel-nfsd";
daemonType = "fork";
exec = "${pkgs.nfsUtils}/sbin/rpc.mountd -f /etc/exports";
};
}
// optionalAttrs (cfg.client.enable || cfg.server.enable)
{ nfs_kernel_statd =
{ name = "nfs-kernel-statd";
description = "Kernel NFS server - Network Status Monitor";
startOn = "started portmap";
stopOn = "never";
preStart =
''
mkdir -p /var/lib/nfs
mkdir -p /var/lib/nfs/sm
mkdir -p /var/lib/nfs/sm.bak
'';
daemonType = "fork";
exec = "${pkgs.nfsUtils}/sbin/rpc.statd --no-notify";
postStart = "${pkgs.nfsUtils}/sbin/sm-notify -d";
};
};
};
}
|