Add sysusers configuration for PostgreSQL 16

- Add postgresql16.sysusers.conf with postgres user definition
- Install sysusers configuration file

Resolves: RHEL-126140

postgresql16.spec

@@ -48,7 +48,7 @@
 Summary: PostgreSQL client programs
 Name: %{majorname}%{majorversion}
 Version: %{majorversion}.10
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 # The PostgreSQL license is very similar to other MIT licenses, but the OSI
 # recognizes it as an independent license, so we do as well.
@@ -542,6 +542,10 @@ find . -type f -name Makefile -exec sed -i -e "s/SO_MAJOR_VERSION=\s\?\([0-9]\+\
 # remove .gitignore files to ensure none get into the RPMs (bug #642210)
 find . -type f -name .gitignore | xargs rm
 
+cat >postgresql16.sysusers.conf <<EOF
+u postgres 26 'PostgreSQL Server' /var/lib/pgsql /bin/bash
+EOF
+
 cat > postgresql16.tmpfiles.conf <<EOF
 d /var/lib/pgsql 0700 postgres postgres -
 EOF
@@ -954,10 +958,12 @@ find_lang_bins pltcl.lst pltcl
 
 install -m0644 -D postgresql16.tmpfiles.conf %{buildroot}%{_tmpfilesdir}/postgresql16.conf
 
+install -m0644 -D postgresql16.sysusers.conf %{buildroot}%{_sysusersdir}/postgresql16.conf
+
 %pre -n %{pkgname}-server
 /usr/sbin/groupadd -g 26 -o -r postgres >/dev/null 2>&1 || :
 /usr/sbin/useradd -M -N -g postgres -o -r -d /var/lib/pgsql -s /bin/bash \
-	-c "PostgreSQL Server" -u 26 postgres >/dev/null 2>&1 || :
+ -c "PostgreSQL Server" -u 26 postgres >/dev/null 2>&1 || :
 
 %post -n %{pkgname}-server
 %systemd_post %service_name
@@ -1244,6 +1250,7 @@ make -C postgresql-setup-%{setup_version} check
 %config(noreplace) /etc/pam.d/postgresql
 %endif
 %{_tmpfilesdir}/postgresql16.conf
+%{_sysusersdir}/postgresql16.conf
 
 
 %files -n %{pkgname}-server-devel -f devel.lst
@@ -1341,6 +1348,10 @@ make -C postgresql-setup-%{setup_version} check
 
 
 %changelog
+* Mon Nov 10 2025 Filip Janus <fjanus@redhat.com> - 16.10-3
+- Add tmpfiles.d configuration for PostgreSQL 16
+- Ensures proper directory permissions for /var/lib/pgsql
+
 * Wed Oct  1 2025 Filip Janus <fjanus@redhat.com> - 16.10-2
 - Add OpenSSL support to upgrade_configure function
 - This ensures upgrade server is compiled with OpenSSL support