diff options
Diffstat (limited to 'nixos/lib/utils.nix')
| -rw-r--r-- | nixos/lib/utils.nix | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/nixos/lib/utils.nix b/nixos/lib/utils.nix index 40d0854d968d..1ef915d40612 100644 --- a/nixos/lib/utils.nix +++ b/nixos/lib/utils.nix @@ -2,6 +2,15 @@ pkgs: with pkgs.lib; rec { + # Check whenever fileSystem is needed for boot + fsNeededForBoot = fs: fs.neededForBoot + || elem fs.mountPoint [ "/" "/nix" "/nix/store" "/var" "/var/log" "/var/lib" "/etc" ]; + + # Check whenever `b` depends on `a` as a fileSystem + # FIXME: it's incorrect to simply use hasPrefix here: "/dev/a" is not a parent of "/dev/ab" + fsBefore = a: b: ((any (x: elem x [ "bind" "move" ]) b.options) && (a.mountPoint == b.device)) + || (hasPrefix a.mountPoint b.mountPoint); + # Escape a path according to the systemd rules, e.g. /dev/xyzzy # becomes dev-xyzzy. FIXME: slow. escapeSystemdPath = s: |