Look at /etc/login.defs for the system_max_[ug]id values

It makes little sense to make the boundary between systemd and user guids
configurable. Nevertheless, a completely fixed compile-time define is not
enough in two scenarios:
- the systemd_uid_max boundary has moved over time. The default used to be
  500 for a long time. Systems which are upgraded over time might have users
  in the wrong range, but changing existing systems is complicated and
  expensive (offline disks, backups, remote systems, read-only media, etc.)
- systems are used in a heterogenous enviornment, where some vendors pick
  one value and others another.
So let's make this boundary overridable using /etc/login.defs.

Fixes #3855, #10184.

1 files changed, 2 insertions, 0 deletions

diff --git a/meson.build b/meson.build
index 36314f7157..8083cf655b 100644
--- a/meson.build
+++ b/meson.build
@@ -1443,6 +1443,7 @@ foreach term : ['analyze',
                 'idn',
                 'ima',
                 'initrd',
+                'compat-mutable-uid-boundaries',
                 'ldconfig',
                 'localed',
                 'logind',
@@ -3627,6 +3628,7 @@ foreach tuple : [
         ['libcurl'],
         ['idn'],
         ['initrd'],
+        ['compat-mutable-uid-boundaries'],
         ['libidn2'],
         ['libidn'],
         ['libiptc'],