nixpkgs-suyu/nixos/modules/system/boot/tmp.nix
Ramses 4cea257440 nixos/tmp: Fix format of /tmp mount options
The mount options need to be passed as a comma-separated list of options so that they
end up one a single Options line in the resulting mount unit.
The current code passed the options as a list, resulting in several Options lines in
the mount unit, all but the first of these were ignored by systemd however.
This behaviour is not clearly defined in the systemd man page.
2022-01-31 12:49:29 +01:00

64 lines
1.5 KiB
Nix

{ config, lib, ... }:
with lib;
let
cfg = config.boot;
in
{
###### interface
options = {
boot.cleanTmpDir = mkOption {
type = types.bool;
default = false;
description = ''
Whether to delete all files in <filename>/tmp</filename> during boot.
'';
};
boot.tmpOnTmpfs = mkOption {
type = types.bool;
default = false;
description = ''
Whether to mount a tmpfs on <filename>/tmp</filename> during boot.
'';
};
boot.tmpOnTmpfsSize = mkOption {
type = types.oneOf [ types.str types.types.ints.positive ];
default = "50%";
description = ''
Size of tmpfs in percentage.
Percentage is defined by systemd.
'';
};
};
###### implementation
config = {
# When changing remember to update /tmp mount in virtualisation/qemu-vm.nix
systemd.mounts = mkIf cfg.tmpOnTmpfs [
{
what = "tmpfs";
where = "/tmp";
type = "tmpfs";
mountConfig.Options = concatStringsSep "," [ "mode=1777"
"strictatime"
"rw"
"nosuid"
"nodev"
"size=${toString cfg.tmpOnTmpfsSize}" ];
}
];
systemd.tmpfiles.rules = optional config.boot.cleanTmpDir "D! /tmp 1777 root root";
};
}