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21.2. Types

Type Enforcement is the main permission control used in SELinux targeted policy. All files and processes are labeled with a type: types define a domain for processes and a type for files. SELinux policy rules define how types access each other, whether it be a domain accessing a type, or a domain accessing another domain. Access is only allowed if a specific SELinux policy rule exists that allows it.
The following types are used with postgresql. Different types allow you to configure flexible access. Note that in the list below are used several regular expression to match the whole possible locations:
postgresql_db_t
This type is used for several locations. The locations labeled with this type are used for data files for PostgreSQL:
  • /usr/lib/pgsql/test/regres
  • /usr/share/jonas/pgsql
  • /var/lib/pgsql/data
  • /var/lib/postgres(ql)?
postgresql_etc_t
This type is used for configuration files in the /etc/postgresql/ directory.
postgresql_exec_t
This type is used for several locations. The locations labeled with this type are used for binaries for PostgreSQL:
  • /usr/bin/initdb(.sepgsql)?
  • /usr/bin/(se)?postgres
  • /usr/lib(64)?/postgresql/bin/.*
  • /usr/lib(64)?/pgsql/test/regress/pg_regress
systemd_unit_file_t
This type is used for the executable PostgreSQL-related files located in the /usr/lib/systemd/system/ directory.
postgresql_log_t
This type is used for several locations. The locations labeled with this type are used for log files:
  • /var/lib/pgsql/logfile
  • /var/lib/pgsql/pgstartup.log
  • /var/lib/sepgsql/pgstartup.log
  • /var/log/postgresql
  • /var/log/postgres.log.*
  • /var/log/rhdb/rhdb
  • /var/log/sepostgresql.log.*
postgresql_var_run_t
This type is used for run-time files for PostgreSQL, such as the process id (PID) in the /var/run/postgresql/ directory.