The %pre server section of the .spec file sets executable bit on the
/var/log/postgresql log file.


Reproducible: Always
Steps to Reproduce:
1.rpm -i postgresql-server
3.ls -l /var/log/postgresql
	

Actual Results:  -rwx------    1 postgres postgres    25115 Mar  9 15:58
/var/log/postgresql


Expected Results:  -rw-------    1 postgres postgres    25115 Mar  9 15:58
/var/log/postgresql

The chmod 0700 /var/log/posgresql command should be replaced by
chmod 0600 /var/log/posgresql

BTW, it wasn't clear to me how to enable logging to this file.
My recomendation would be to at least add a comment to
/etc/rc.d/init.d/postgresql