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nixos/systemd-stage-1: unify initrd fstab generation logic with system fstab

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This commit is contained in:
Lily Foster 2022-08-16 09:33:28 -04:00
parent 0608bffda6
commit 69d7943101
2 changed files with 31 additions and 25 deletions
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8
nixos/modules/system/boot/systemd/initrd.nix
View File

@ -100,12 +100,6 @@ let
fileSystems = filter utils.fsNeededForBoot config.system.build.fileSystems;
fstab = pkgs.writeText "initrd-fstab" (lib.concatMapStringsSep "\n"
({ fsType, mountPoint, device, options, autoFormat, autoResize, ... }@fs: let
opts = options ++ optional autoFormat "x-systemd.makefs" ++ optional autoResize "x-systemd.growfs";
finalDevice = if (lib.elem "bind" options) then "/sysroot${device}" else device;
in "${finalDevice} /sysroot${mountPoint} ${fsType} ${lib.concatStringsSep "," opts}") fileSystems);
needMakefs = lib.any (fs: fs.autoFormat) fileSystems;
needGrowfs = lib.any (fs: fs.autoResize) fileSystems;
@ -354,8 +348,6 @@ in {
DefaultEnvironment=PATH=/bin:/sbin ${optionalString (isBool cfg.emergencyAccess && cfg.emergencyAccess) "SYSTEMD_SULOGIN_FORCE=1"}
'';
"/etc/fstab".source = fstab;
"/lib/modules".source = "${modulesClosure}/lib/modules";
"/lib/firmware".source = "${modulesClosure}/lib/firmware";

48
nixos/modules/tasks/filesystems.nix
View File

@ -153,6 +153,34 @@ let
specialMount "${mount.device}" "${mount.mountPoint}" "${concatStringsSep "," mount.options}" "${mount.fsType}"
'') mounts);
makeFstabEntries =
let
fsToSkipCheck = [ "none" "bindfs" "btrfs" "zfs" "tmpfs" "nfs" "vboxsf" "glusterfs" "apfs" "9p" "cifs" "prl_fs" "vmhgfs" ];
isBindMount = fs: builtins.elem "bind" fs.options;
skipCheck = fs: fs.noCheck || fs.device == "none" || builtins.elem fs.fsType fsToSkipCheck || isBindMount fs;
# https://wiki.archlinux.org/index.php/fstab#Filepath_spaces
escape = string: builtins.replaceStrings [ " " "\t" ] [ "\\040" "\\011" ] string;
in fstabFileSystems: { rootPrefix ? "", excludeChecks ? false, extraOpts ? (fs: []) }: concatMapStrings (fs:
(optionalString (isBindMount fs) (escape rootPrefix))
+ (if fs.device != null then escape fs.device
else if fs.label != null then "/dev/disk/by-label/${escape fs.label}"
else throw "No device specified for mount point ‘${fs.mountPoint}’.")
+ " " + escape (rootPrefix + fs.mountPoint)
+ " " + fs.fsType
+ " " + builtins.concatStringsSep "," (fs.options ++ (extraOpts fs))
+ " " + (optionalString (!excludeChecks)
("0 " + (if skipCheck fs then "0" else if fs.mountPoint == "/" then "1" else "2")))
+ "\n"
) fstabFileSystems;
initrdFstab = pkgs.writeText "initrd-fstab" (makeFstabEntries (filter utils.fsNeededForBoot fileSystems) {
rootPrefix = "/sysroot";
excludeChecks = true;
extraOpts = fs:
(optional fs.autoResize "x-systemd.growfs")
++ (optional fs.autoFormat "x-systemd.makefs");
});
in
{
@ -279,11 +307,6 @@ in
environment.etc.fstab.text =
let
fsToSkipCheck = [ "none" "bindfs" "btrfs" "zfs" "tmpfs" "nfs" "vboxsf" "glusterfs" "apfs" "9p" "cifs" "prl_fs" "vmhgfs" ];
isBindMount = fs: builtins.elem "bind" fs.options;
skipCheck = fs: fs.noCheck || fs.device == "none" || builtins.elem fs.fsType fsToSkipCheck || isBindMount fs;
# https://wiki.archlinux.org/index.php/fstab#Filepath_spaces
escape = string: builtins.replaceStrings [ " " "\t" ] [ "\\040" "\\011" ] string;
swapOptions = sw: concatStringsSep "," (
sw.options
++ optional (sw.priority != null) "pri=${toString sw.priority}"
@ -298,18 +321,7 @@ in
# <file system> <mount point> <type> <options> <dump> <pass>
# Filesystems.
${concatMapStrings (fs:
(if fs.device != null then escape fs.device
else if fs.label != null then "/dev/disk/by-label/${escape fs.label}"
else throw "No device specified for mount point ‘${fs.mountPoint}’.")
+ " " + escape fs.mountPoint
+ " " + fs.fsType
+ " " + builtins.concatStringsSep "," fs.options
+ " 0"
+ " " + (if skipCheck fs then "0" else
if fs.mountPoint == "/" then "1" else "2")
+ "\n"
) fileSystems}
${makeFstabEntries fileSystems {}}
# Swap devices.
${flip concatMapStrings config.swapDevices (sw:
@ -317,6 +329,8 @@ in
)}
'';
boot.initrd.systemd.contents."/etc/fstab".source = initrdFstab;
# Provide a target that pulls in all filesystems.
systemd.targets.fs =
{ description = "All File Systems";