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Add OWNER option to CREATE DATABASE, so superusers can create databases
on behalf of unprivileged users. Also, make '=' optional in CREATE DATABASE syntax. From Gavin Sherry, with kibitzing and docs by Tom Lane.
This commit is contained in:
Tom Lane
parent
f66f7a542f
commit
a833c441fd
@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_database.sgml,v 1.23 2002/01/20 22:19:56 petere Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_database.sgml,v 1.24 2002/02/24 20:20:18 tgl Exp $
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PostgreSQL documentation
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-->
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@ -24,9 +24,10 @@ PostgreSQL documentation
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</refsynopsisdivinfo>
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<synopsis>
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CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
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[ WITH [ LOCATION = '<replaceable class="parameter">dbpath</replaceable>' ]
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[ TEMPLATE = <replaceable class="parameter">template</replaceable> ]
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[ ENCODING = <replaceable class="parameter">encoding</replaceable> ] ]
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[ WITH [ OWNER [ = ] <replaceable class="parameter">dbowner</replaceable> ]
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[ LOCATION [ = ] '<replaceable class="parameter">dbpath</replaceable>' ]
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[ TEMPLATE [ = ] <replaceable class="parameter">template</replaceable> ]
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[ ENCODING [ = ] <replaceable class="parameter">encoding</replaceable> ] ]
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</synopsis>
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<refsect2 id="R2-SQL-CREATEDATABASE-1">
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@ -47,6 +48,16 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">dbowner</replaceable></term>
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<listitem>
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<para>
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Name of the database user who will own the new database,
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or <literal>DEFAULT</literal> to use the default (namely, the
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user executing the command).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">dbpath</replaceable></term>
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<listitem>
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@ -171,7 +182,15 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
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<para>
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<command>CREATE DATABASE</command> creates a new
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<productname>PostgreSQL</productname> database.
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The creator becomes the owner of the new database.
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</para>
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<para>
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Normally, the creator becomes the owner of the new database.
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A different owner may be specified by using the <option>OWNER</>
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clause (but only superusers may create databases on behalf of other users).
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To create a database owned by oneself, either superuser privilege
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or CREATEDB privilege is required. A superuser may create a database
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for another user, even if that user has no special privileges himself.
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</para>
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<para>
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@ -327,7 +346,8 @@ Type: \copyright for distribution terms
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</title>
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<para>
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There is no <command>CREATE DATABASE</command> statement in SQL92.
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Databases are equivalent to catalogs whose creation is implementation-defined.
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Databases are equivalent to catalogs, whose creation is
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implementation-defined.
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</para>
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</refsect2>
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</refsect1>
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@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.117 2002/02/23 04:17:45 petere Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.118 2002/02/24 20:20:19 tgl Exp $
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-->
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<appendix id="release">
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@ -26,6 +26,7 @@ worries about funny characters.
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<literallayout><![CDATA[
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Access privileges on functions
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Access privileges on procedural languages
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CREATE DATABASE has OWNER option so superuser can create DB for someone else
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Kerberos 5 support now works with Heimdal
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]]></literallayout>
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@ -9,7 +9,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.82 2002/02/23 20:55:46 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.83 2002/02/24 20:20:19 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -34,6 +34,7 @@
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#include "storage/sinval.h"
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#include "utils/builtins.h"
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#include "utils/fmgroids.h"
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#include "utils/lsyscache.h"
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#include "utils/syscache.h"
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#ifdef MULTIBYTE
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@ -55,8 +56,9 @@ static bool remove_dbdirs(const char *real_loc, const char *altloc);
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*/
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void
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createdb(const char *dbname, const char *dbpath,
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const char *dbtemplate, int encoding)
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createdb(const char *dbname, const char *dbowner,
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const char *dbpath, const char *dbtemplate,
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int encoding)
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{
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char *nominal_loc;
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char *alt_loc;
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@ -79,12 +81,31 @@ createdb(const char *dbname, const char *dbpath,
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Datum new_record[Natts_pg_database];
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char new_record_nulls[Natts_pg_database];
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Oid dboid;
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int32 datdba;
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/* obtain sysid of proposed owner */
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if (dbowner)
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datdba = get_usesysid(dbowner); /* will elog if no such user */
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else
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datdba = GetUserId();
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/* check permission to create database */
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if (!get_user_info(GetUserId(), &use_super, &use_createdb))
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elog(ERROR, "current user name is invalid");
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if (datdba == (int32) GetUserId())
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{
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/* creating database for self: can be superuser or createdb */
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if (!use_createdb && !use_super)
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elog(ERROR, "CREATE DATABASE: permission denied");
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}
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else
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{
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/* creating database for someone else: must be superuser */
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/* note that the someone else need not have any permissions */
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if (!use_super)
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elog(ERROR, "CREATE DATABASE: permission denied");
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}
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/* don't call this in a transaction block */
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if (IsTransactionBlock())
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@ -254,7 +275,7 @@ createdb(const char *dbname, const char *dbpath,
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/* Form tuple */
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new_record[Anum_pg_database_datname - 1] =
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DirectFunctionCall1(namein, CStringGetDatum(dbname));
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new_record[Anum_pg_database_datdba - 1] = Int32GetDatum(GetUserId());
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new_record[Anum_pg_database_datdba - 1] = Int32GetDatum(datdba);
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new_record[Anum_pg_database_encoding - 1] = Int32GetDatum(encoding);
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new_record[Anum_pg_database_datistemplate - 1] = BoolGetDatum(false);
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new_record[Anum_pg_database_datallowconn - 1] = BoolGetDatum(true);
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@ -15,7 +15,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.161 2002/02/18 23:11:14 petere Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.162 2002/02/24 20:20:20 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -2231,6 +2231,8 @@ _copyCreatedbStmt(CreatedbStmt *from)
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if (from->dbname)
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newnode->dbname = pstrdup(from->dbname);
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if (from->dbowner)
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newnode->dbowner = pstrdup(from->dbowner);
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if (from->dbpath)
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newnode->dbpath = pstrdup(from->dbpath);
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if (from->dbtemplate)
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@ -20,7 +20,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.109 2002/02/18 23:11:14 petere Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.110 2002/02/24 20:20:20 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1099,6 +1099,8 @@ _equalCreatedbStmt(CreatedbStmt *a, CreatedbStmt *b)
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{
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if (!equalstr(a->dbname, b->dbname))
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return false;
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if (!equalstr(a->dbowner, b->dbowner))
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return false;
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if (!equalstr(a->dbpath, b->dbpath))
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return false;
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if (!equalstr(a->dbtemplate, b->dbtemplate))
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@ -11,7 +11,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.278 2002/02/18 23:11:17 petere Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.279 2002/02/24 20:20:20 tgl Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -153,6 +153,7 @@ static void doNegateFloat(Value *v);
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%type <ival> drop_behavior
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%type <list> createdb_opt_list, createdb_opt_item
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%type <boolean> opt_equal
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%type <ival> opt_lock, lock_type
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%type <boolean> opt_force, opt_or_replace
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@ -733,6 +734,7 @@ CreateSchemaStmt: CREATE SCHEMA UserId
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/* for now, just make this the same as CREATE DATABASE */
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CreatedbStmt *n = makeNode(CreatedbStmt);
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n->dbname = $3;
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n->dbowner = NULL;
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n->dbpath = NULL;
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n->dbtemplate = NULL;
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n->encoding = -1;
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@ -3049,6 +3051,7 @@ CreatedbStmt: CREATE DATABASE database_name WITH createdb_opt_list
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n->dbname = $3;
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/* set default options */
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n->dbowner = NULL;
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n->dbpath = NULL;
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n->dbtemplate = NULL;
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n->encoding = -1;
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@ -3068,6 +3071,9 @@ CreatedbStmt: CREATE DATABASE database_name WITH createdb_opt_list
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case 3:
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n->encoding = lfirsti(lnext(optitem));
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break;
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case 4:
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n->dbowner = (char *) lsecond(optitem);
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break;
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}
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}
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$$ = (Node *)n;
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@ -3076,6 +3082,7 @@ CreatedbStmt: CREATE DATABASE database_name WITH createdb_opt_list
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{
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CreatedbStmt *n = makeNode(CreatedbStmt);
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n->dbname = $3;
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n->dbowner = NULL;
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n->dbpath = NULL;
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n->dbtemplate = NULL;
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n->encoding = -1;
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@ -3093,23 +3100,23 @@ createdb_opt_list: createdb_opt_item
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* createdb_opt_item returns 2-element lists, with the first element
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* being an integer code to indicate which item was specified.
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*/
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createdb_opt_item: LOCATION '=' Sconst
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createdb_opt_item: LOCATION opt_equal Sconst
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{
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$$ = lconsi(1, makeList1($3));
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}
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| LOCATION '=' DEFAULT
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| LOCATION opt_equal DEFAULT
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{
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$$ = lconsi(1, makeList1(NULL));
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}
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| TEMPLATE '=' name
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| TEMPLATE opt_equal name
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{
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$$ = lconsi(2, makeList1($3));
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}
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| TEMPLATE '=' DEFAULT
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| TEMPLATE opt_equal DEFAULT
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{
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$$ = lconsi(2, makeList1(NULL));
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}
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| ENCODING '=' Sconst
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| ENCODING opt_equal Sconst
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{
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int encoding;
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#ifdef MULTIBYTE
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@ -3123,7 +3130,7 @@ createdb_opt_item: LOCATION '=' Sconst
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#endif
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$$ = lconsi(3, makeListi1(encoding));
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}
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| ENCODING '=' Iconst
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| ENCODING opt_equal Iconst
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{
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#ifdef MULTIBYTE
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if (!pg_get_enconv_by_encoding($3))
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@ -3134,12 +3141,23 @@ createdb_opt_item: LOCATION '=' Sconst
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#endif
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$$ = lconsi(3, makeListi1($3));
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}
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| ENCODING '=' DEFAULT
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| ENCODING opt_equal DEFAULT
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{
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$$ = lconsi(3, makeListi1(-1));
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}
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| OWNER opt_equal name
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{
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$$ = lconsi(4, makeList1($3));
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}
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| OWNER opt_equal DEFAULT
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{
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$$ = lconsi(4, makeList1(NULL));
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}
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;
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opt_equal: '=' { $$ = TRUE; }
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| /*EMPTY*/ { $$ = FALSE; }
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;
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/*****************************************************************************
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*
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.125 2002/02/07 00:27:30 inoue Exp $
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.126 2002/02/24 20:20:20 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -624,8 +624,9 @@ ProcessUtility(Node *parsetree,
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set_ps_display(commandTag = "CREATE DATABASE");
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createdb(stmt->dbname, stmt->dbpath,
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stmt->dbtemplate, stmt->encoding);
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createdb(stmt->dbname, stmt->dbowner,
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stmt->dbpath, stmt->dbtemplate,
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stmt->encoding);
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}
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break;
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@ -7,15 +7,16 @@
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: dbcommands.h,v 1.19 2001/11/05 17:46:33 momjian Exp $
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* $Id: dbcommands.h,v 1.20 2002/02/24 20:20:21 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef DBCOMMANDS_H
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#define DBCOMMANDS_H
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extern void createdb(const char *dbname, const char *dbpath,
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const char *dbtemplate, int encoding);
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extern void createdb(const char *dbname, const char *dbowner,
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const char *dbpath, const char *dbtemplate,
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int encoding);
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extern void dropdb(const char *dbname);
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#endif /* DBCOMMANDS_H */
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: parsenodes.h,v 1.152 2002/02/18 23:11:41 petere Exp $
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* $Id: parsenodes.h,v 1.153 2002/02/24 20:20:21 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -679,6 +679,7 @@ typedef struct CreatedbStmt
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{
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NodeTag type;
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char *dbname; /* name of database to create */
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char *dbowner; /* name of owner (NULL = default) */
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char *dbpath; /* location of database (NULL = default) */
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char *dbtemplate; /* template to use (NULL = default) */
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int encoding; /* MULTIBYTE encoding (-1 = use default) */
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