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Allow grant-level control of role inheritance behavior.

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The GRANT statement can now specify WITH INHERIT TRUE or WITH
INHERIT FALSE to control whether the member inherits the granted
role's permissions. For symmetry, you can now likewise write
WITH ADMIN TRUE or WITH ADMIN FALSE to turn ADMIN OPTION on or off.

If a GRANT does not specify WITH INHERIT, the behavior based on
whether the member role is marked INHERIT or NOINHERIT. This means
that if all roles are marked INHERIT or NOINHERIT before any role
grants are performed, the behavior is identical to what we had before;
otherwise, it's different, because ALTER ROLE [NO]INHERIT now only
changes the default behavior of future grants, and has no effect on
existing ones.

Patch by me. Reviewed and testing by Nathan Bossart and Tushar Ahuja,
with design-level comments from various others.

Discussion: http://postgr.es/m/CA+Tgmoa5Sf4PiWrfxA=sGzDKg0Ojo3dADw=wAHOhR9dggV=RmQ@mail.gmail.com
This commit is contained in:
Robert Haas
2022-08-25 10:06:02 -04:00
parent 2059c5e3b0
commit e3ce2de09d
15 changed files with 385 additions and 115 deletions
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9
doc/src/sgml/ref/revoke.sgml
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@@ -125,7 +125,7 @@ REVOKE [ GRANT OPTION FOR ]
[ GRANTED BY <replaceable class="parameter">role_specification</replaceable> ]
[ CASCADE | RESTRICT ]
REVOKE [ ADMIN OPTION FOR ]
REVOKE [ { ADMIN | INHERIT } OPTION FOR ]
<replaceable class="parameter">role_name</replaceable> [, ...] FROM <replaceable class="parameter">role_specification</replaceable> [, ...]
[ GRANTED BY <replaceable class="parameter">role_specification</replaceable> ]
[ CASCADE | RESTRICT ]
@@ -206,6 +206,13 @@ REVOKE [ ADMIN OPTION FOR ]
allow the noise word <literal>GROUP</literal>
in <replaceable class="parameter">role_specification</replaceable>.
</para>
<para>
Just as <literal>ADMIN OPTION</literal> can be removed from an existing
role grant, it is also possible to revoke <literal>INHERIT OPTION</literal>.
This is equivalent to setting the value of that option to
<literal>FALSE</literal>.
</para>
</refsect1>
<refsect1 id="sql-revoke-notes">