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https://github.com/NixOS/mobile-nixos.git
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a5135286a8
This is not really meant to provide a user-accessible way to configure the kernel... But it also works that way I guess! For now it is *meant* to provide *required options*, so that validation (and soon normalization) always includes required options.
96 lines
2.5 KiB
Nix
96 lines
2.5 KiB
Nix
{ config, lib, options, pkgs, ... }:
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let
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inherit (lib)
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mkOption
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types
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;
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in
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{
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options = {
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mobile = {
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kernel = {
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structuredConfig = mkOption {
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type = with types; listOf (functionTo attrs);
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description = ''
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Functions returning kernel structured config.
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The functions take one argument, an attrset of helpers.
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These helpers are expected to be used with `with`, they
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provide the `yes`, `no`, `whenOlder` and similar helpers
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from `lib.kernel`.
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The `whenHelpers` are configured with the appropriate
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version already.
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'';
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};
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};
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};
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};
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config = {
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mobile.kernel.structuredConfig = [
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# Basic universal options
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(helpers: with helpers; {
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# POSIX_ACL and XATTR are generally needed.
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TMPFS_POSIX_ACL = yes;
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TMPFS_XATTR = yes;
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# Executive decision that EXT4 is required.
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EXT4_FS = yes;
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EXT4_FS_POSIX_ACL = yes;
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# Required config for Nix
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NAMESPACES = yes;
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USER_NS = yes;
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PID_NS = yes;
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# Additional options
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SYSVIPC = yes;
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# Options from Android kernels that break stuff
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# While not *universally available*, it's universally required to
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# be turned off.
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ANDROID_PARANOID_NETWORK = no;
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})
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# Needed for systemd
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(helpers: with helpers; {
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# Kernel configuration as required by systemd
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# As of https://github.com/systemd/systemd/blob/4917c15af7c2dfe553b8e0dbf22b4fb7cec958de/README#L35
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DEVTMPFS = yes;
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CGROUPS = yes;
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INOTIFY_USER = yes;
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SIGNALFD = yes;
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TIMERFD = yes;
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EPOLL = yes;
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NET = yes;
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UNIX = yes;
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SYSFS = yes;
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PROC_FS = yes;
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FHANDLE = yes;
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CRYPTO_USER_API_HASH = yes;
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CRYPTO_HMAC = yes;
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CRYPTO_SHA256 = yes;
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SYSFS_DEPRECATED = no;
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UEVENT_HELPER_PATH = freeform ''""'';
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FW_LOADER_USER_HELPER = option no;
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BLK_DEV_BSG = yes;
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DEVPTS_MULTIPLE_INSTANCES = whenOlder "4.7" yes;
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})
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];
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nixpkgs.overlays = [(final: super: {
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systemBuild-structuredConfig = version:
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let
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helpers = lib.kernel // (lib.kernel.whenHelpers version);
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structuredConfig =
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lib.mkMerge
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(map (fn: fn helpers) config.mobile.kernel.structuredConfig)
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;
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in
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structuredConfig
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;
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})];
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};
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}
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