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Klemens Nanni 8833983f26 nixos/users-groups: createHome: Ensure HOME permissions, fix description
configuration.nix(1) states

    users.extraUsers.<name>.createHome
        [...] If [...] the home directory already exists but is not
        owned by the user, directory owner and group will be changed to
        match the user.

i.e. ownership would change only if the user mismatched;  the code
however ignores the owner, it is sufficient to enable `createHome`:

    if ($u->{createHome}) {
        make_path($u->{home}, { mode => 0700 }) if ! -e $u->{home};
        chown $u->{uid}, $u->{gid}, $u->{home};
    }

Furthermore, permissions are ignored on already existing directories and
therefore may allow others to read private data eventually.

Given that createHome already acts as switch to not only create but
effectively own the home directory, manage permissions in the same
manner to ensure the intended default and cover all primary attributes.

Avoid yet another configuration option to have administrators make a
clear and simple choice between securely managing home directories
and optionally defering management to own code (taking care of custom
location, ownership, mode, extended attributes, etc.).

While here, simplify and thereby fix misleading documentation.
2020-12-16 03:40:29 +01:00
..
doc nixos/users-groups: createHome: Ensure HOME permissions, fix description 2020-12-16 03:40:29 +01:00
lib nixos/lib/testing-python.nix: Wire up passthru 2020-12-09 13:24:03 +01:00
maintainers Merge pull request #102174 from grahamc/ami-root-use-gpt 2020-10-30 16:14:37 -04:00
modules nixos/users-groups: createHome: Ensure HOME permissions, fix description 2020-12-16 03:40:29 +01:00
tests lsd: Fix test 2020-12-15 09:10:34 -05:00
COPYING
default.nix
README treewide: use https for nixos.org and hydra.nixos.org 2020-05-03 22:14:21 -07:00
release-combined.nix nixos: release-combined: only build the amazon image for x86_64,aarch64-linux -- exclude i686 2020-11-19 19:34:23 -05:00
release-small.nix Merge pull request #104322 from grahamc/amazon-image 2020-11-19 18:45:07 -05:00
release.nix nixos/release: add pantheon closure 2020-07-26 15:30:08 -04:00

*** NixOS ***

NixOS is a Linux distribution based on the purely functional package
management system Nix.  More information can be found at
https://nixos.org/nixos and in the manual in doc/manual.