security_label(7) [centos man page]
SECURITY
LABEL(7) PostgreSQL 9.2.7 Documentation SECURITY LABEL(7) NAME
SECURITY_LABEL - define or change a security label applied to an object SYNOPSIS
SECURITY LABEL [ FOR provider ] ON { TABLE object_name | COLUMN table_name.column_name | AGGREGATE agg_name (agg_type [, ...] ) | DATABASE object_name | DOMAIN object_name | FOREIGN TABLE object_name FUNCTION function_name ( [ [ argmode ] [ argname ] argtype [, ...] ] ) | LARGE OBJECT large_object_oid | [ PROCEDURAL ] LANGUAGE object_name | ROLE object_name | SCHEMA object_name | SEQUENCE object_name | TABLESPACE object_name | TYPE object_name | VIEW object_name } IS 'label' DESCRIPTION
SECURITY LABEL applies a security label to a database object. An arbitrary number of security labels, one per label provider, can be associated with a given database object. Label providers are loadable modules which register themselves by using the function register_label_provider. Note register_label_provider is not an SQL function; it can only be called from C code loaded into the backend. The label provider determines whether a given label is valid and whether it is permissible to assign that label to a given object. The meaning of a given label is likewise at the discretion of the label provider. PostgreSQL places no restrictions on whether or how a label provider must interpret security labels; it merely provides a mechanism for storing them. In practice, this facility is intended to allow integration with label-based mandatory access control (MAC) systems such as SE-Linux. Such systems make all access control decisions based on object labels, rather than traditional discretionary access control (DAC) concepts such as users and groups. PARAMETERS
object_name, table_name.column_name, agg_name, function_name The name of the object to be labeled. Names of tables, aggregates, domains, foreign tables, functions, sequences, types, and views can be schema-qualified. provider The name of the provider with which this label is to be associated. The named provider must be loaded and must consent to the proposed labeling operation. If exactly one provider is loaded, the provider name may be omitted for brevity. arg_type An input data type on which the aggregate function operates. To reference a zero-argument aggregate function, write * in place of the list of input data types. argmode The mode of a function argument: IN, OUT, INOUT, or VARIADIC. If omitted, the default is IN. Note that SECURITY LABEL ON FUNCTION does not actually pay any attention to OUT arguments, since only the input arguments are needed to determine the function's identity. So it is sufficient to list the IN, INOUT, and VARIADIC arguments. argname The name of a function argument. Note that SECURITY LABEL ON FUNCTION does not actually pay any attention to argument names, since only the argument data types are needed to determine the function's identity. argtype The data type(s) of the function's arguments (optionally schema-qualified), if any. large_object_oid The OID of the large object. PROCEDURAL This is a noise word. label The new security label, written as a string literal; or NULL to drop the security label. EXAMPLES
The following example shows how the security label of a table might be changed. SECURITY LABEL FOR selinux ON TABLE mytable IS 'system_u:object_r:sepgsql_table_t:s0'; COMPATIBILITY
There is no SECURITY LABEL command in the SQL standard. SEE ALSO
sepgsql, dummy_seclabel PostgreSQL 9.2.7 2014-02-17 SECURITY LABEL(7)
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ALTER
EXTENSION(7) PostgreSQL 9.2.7 Documentation ALTER EXTENSION(7) NAME
ALTER_EXTENSION - change the definition of an extension SYNOPSIS
ALTER EXTENSION name UPDATE [ TO new_version ] ALTER EXTENSION name SET SCHEMA new_schema ALTER EXTENSION name ADD member_object ALTER EXTENSION name DROP member_object where member_object is: AGGREGATE agg_name (agg_type [, ...] ) | CAST (source_type AS target_type) | COLLATION object_name | CONVERSION object_name | DOMAIN object_name | FOREIGN DATA WRAPPER object_name | FOREIGN TABLE object_name | FUNCTION function_name ( [ [ argmode ] [ argname ] argtype [, ...] ] ) | OPERATOR operator_name (left_type, right_type) | OPERATOR CLASS object_name USING index_method | OPERATOR FAMILY object_name USING index_method | [ PROCEDURAL ] LANGUAGE object_name | SCHEMA object_name | SEQUENCE object_name | SERVER object_name | TABLE object_name | TEXT SEARCH CONFIGURATION object_name | TEXT SEARCH DICTIONARY object_name | TEXT SEARCH PARSER object_name | TEXT SEARCH TEMPLATE object_name | TYPE object_name | VIEW object_name DESCRIPTION
ALTER EXTENSION changes the definition of an installed extension. There are several subforms: UPDATE This form updates the extension to a newer version. The extension must supply a suitable update script (or series of scripts) that can modify the currently-installed version into the requested version. SET SCHEMA This form moves the extension's objects into another schema. The extension has to be relocatable for this command to succeed. ADD member_object This form adds an existing object to the extension. This is mainly useful in extension update scripts. The object will subsequently be treated as a member of the extension; notably, it can only be dropped by dropping the extension. DROP member_object This form removes a member object from the extension. This is mainly useful in extension update scripts. The object is not dropped, only disassociated from the extension. See Section 35.15, "Packaging Related Objects into an Extension", in the documentation for more information about these operations. You must own the extension to use ALTER EXTENSION. The ADD/DROP forms require ownership of the added/dropped object as well. PARAMETERS
name The name of an installed extension. new_version The desired new version of the extension. This can be written as either an identifier or a string literal. If not specified, ALTER EXTENSION UPDATE attempts to update to whatever is shown as the default version in the extension's control file. new_schema The new schema for the extension. object_name, agg_name, function_name, operator_name The name of an object to be added to or removed from the extension. Names of tables, aggregates, domains, foreign tables, functions, operators, operator classes, operator families, sequences, text search objects, types, and views can be schema-qualified. agg_type An input data type on which the aggregate function operates. To reference a zero-argument aggregate function, write * in place of the list of input data types. source_type The name of the source data type of the cast. target_type The name of the target data type of the cast. argmode The mode of a function argument: IN, OUT, INOUT, or VARIADIC. If omitted, the default is IN. Note that ALTER EXTENSION does not actually pay any attention to OUT arguments, since only the input arguments are needed to determine the function's identity. So it is sufficient to list the IN, INOUT, and VARIADIC arguments. argname The name of a function argument. Note that ALTER EXTENSION does not actually pay any attention to argument names, since only the argument data types are needed to determine the function's identity. argtype The data type(s) of the function's arguments (optionally schema-qualified), if any. left_type, right_type The data type(s) of the operator's arguments (optionally schema-qualified). Write NONE for the missing argument of a prefix or postfix operator. PROCEDURAL This is a noise word. EXAMPLES
To update the hstore extension to version 2.0: ALTER EXTENSION hstore UPDATE TO '2.0'; To change the schema of the hstore extension to utils: ALTER EXTENSION hstore SET SCHEMA utils; To add an existing function to the hstore extension: ALTER EXTENSION hstore ADD FUNCTION populate_record(anyelement, hstore); COMPATIBILITY
ALTER EXTENSION is a PostgreSQL extension. SEE ALSO
CREATE EXTENSION (CREATE_EXTENSION(7)), DROP EXTENSION (DROP_EXTENSION(7)) PostgreSQL 9.2.7 2014-02-17 ALTER EXTENSION(7)