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Add pg_has_role() family of privilege inquiry functions modeled after the

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existing ones for object privileges.  Update the information_schema for
roles --- pg_has_role() makes this a whole lot easier, removing the need
for most of the explicit joins with pg_user.  The views should be a tad
faster now, too.  Stephen Frost and Tom Lane.
This commit is contained in:
Tom Lane
2005-07-26 00:04:19 +00:00
parent e5d6b91220
commit f9fd176461
6 changed files with 383 additions and 132 deletions
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28
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.270 2005/07/25 22:12:30 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.271 2005/07/26 00:04:17 tgl Exp $
PostgreSQL documentation
-->
@ -8427,6 +8427,21 @@ SET search_path TO <replaceable>schema</> <optional>, <replaceable>schema</>, ..
<entry><type>boolean</type></entry>
<entry>does current user have privilege for language</entry>
</row>
<row>
<entry><literal><function>pg_has_role</function>(<parameter>user</parameter>,
<parameter>role</parameter>,
<parameter>privilege</parameter>)</literal>
</entry>
<entry><type>boolean</type></entry>
<entry>does user have privilege for role</entry>
</row>
<row>
<entry><literal><function>pg_has_role</function>(<parameter>role</parameter>,
<parameter>privilege</parameter>)</literal>
</entry>
<entry><type>boolean</type></entry>
<entry>does current user have privilege for role</entry>
</row>
<row>
<entry><literal><function>has_schema_privilege</function>(<parameter>user</parameter>,
<parameter>schema</parameter>,
@ -8473,6 +8488,9 @@ SET search_path TO <replaceable>schema</> <optional>, <replaceable>schema</>, ..
<indexterm zone="functions-info">
<primary>has_language_privilege</primary>
</indexterm>
<indexterm zone="functions-info">
<primary>pg_has_role</primary>
</indexterm>
<indexterm zone="functions-info">
<primary>has_schema_privilege</primary>
</indexterm>
@ -8536,6 +8554,14 @@ SELECT has_function_privilege('joeuser', 'myfunc(int, text)', 'execute');
<literal>USAGE</literal>.
</para>
<para>
<function>pg_has_role</function> checks whether a user
can access a role in a particular way. The possibilities for its
arguments are analogous to <function>has_table_privilege</function>.
The desired access privilege type must evaluate to
<literal>MEMBER</literal>.
</para>
<para>
<function>has_schema_privilege</function> checks whether a user
can access a schema in a particular way. The possibilities for its