#include "postgres.h"
#include "access/htup_details.h"
#include "catalog/pg_authid.h"
#include "miscadmin.h"
#include "utils/inval.h"
#include "utils/syscache.h"

Include dependency graph for superuser.c:

Functions
static void	RoleidCallback (Datum arg, SysCacheIdentifier cacheid, uint32 hashvalue)

bool	superuser (void)

bool	superuser_arg (Oid roleid)

Variables
static Oid	last_roleid = InvalidOid

static bool	last_roleid_is_super = false

static bool	roleid_callback_registered = false

Function Documentation

◆ RoleidCallback()

static void RoleidCallback	(	Datum	arg,
		SysCacheIdentifier	cacheid,
		uint32	hashvalue
	)

static

Definition at line 104 of file superuser.c.

{
    /* Invalidate our local cache in case role's superuserness changed */
    last_roleid = InvalidOid;
}

References InvalidOid, and last_roleid.

Referenced by superuser_arg().

◆ superuser()

bool superuser ( void )

Definition at line 47 of file superuser.c.

{
    return superuser_arg(GetUserId());
}

References GetUserId(), and superuser_arg().

Referenced by AlterForeignDataWrapper(), AlterForeignDataWrapperOwner_internal(), AlterForeignServerOwner_internal(), AlterFunction(), AlterObjectNamespace_internal(), AlterObjectOwner_internal(), AlterObjectRename_internal(), AlterOpFamily(), AlterPublicationOwner_internal(), AlterRole(), AlterRoleSet(), AlterSubscription(), AlterSubscriptionOwner_internal(), AlterSystemSetConfigFile(), AlterType(), AlterTypeOwner(), ATExecChangeOwner(), brin_metapage_info(), brin_page_items(), brin_page_type(), brin_revmap_data(), bt_metap(), bt_multi_page_stats(), bt_page_items_bytea(), bt_page_items_internal(), bt_page_stats_internal(), check_encoding_locale_matches(), CheckAlterPublication(), CreateAccessMethod(), CreateCast(), CreateEventTrigger(), CreateForeignDataWrapper(), CreateFunction(), CreateProceduralLanguage(), CreatePublication(), CreateRole(), CreateSubscription(), CreateTableSpace(), dblink_connstr_check(), dblink_security_check(), DefineAggregate(), DefineOpClass(), DefineOpFamily(), DefineTSParser(), DefineTSTemplate(), DefineType(), DropRole(), dummy_object_relabel(), EnableDisableTrigger(), ExecSetVariableStmt(), execute_extension_script(), ExecuteDoStmt(), fmgr_security_definer(), fsm_page_contents(), get_extension_location(), get_raw_page_internal(), gin_leafpage_items(), gin_metapage_info(), gin_page_opaque_info(), gist_page_items(), gist_page_items_bytea(), gist_page_opaque_info(), GUCArrayReset(), hash_bitmap_info(), hash_metapage_info(), hash_page_items(), hash_page_stats(), hash_page_type(), have_createdb_privilege(), heap_page_items(), heap_tuple_infomask_flags(), InitPostgres(), interpret_func_support(), main(), page_checksum_internal(), page_header(), pg_buffercache_superuser_check(), pg_import_system_collations(), pg_nextoid(), pg_relpages(), pg_relpagesbyid(), pg_signal_backend(), pg_stop_making_pinned_objects(), pgstat_get_backend_current_activity(), pgstatginindex(), pgstatindex(), pgstatindexbyid(), pgstattuple(), pgstattuple_approx(), pgstattuplebyid(), postgres_fdw_validator(), ProcedureCreate(), regress_setenv(), RenameRole(), sepgsql_restorecon(), set_config_by_name(), SetPGVariable(), standard_ProcessUtility(), TerminateOtherDBBackends(), tuple_data_split(), validate_option_array_item(), ValidateJoinEstimator(), ValidateRestrictionEstimator(), and wait_pid().

◆ superuser_arg()

bool superuser_arg ( Oid roleid )

Definition at line 57 of file superuser.c.

{
    bool        result;
    HeapTuple   rtup;
 
    /* Quick out for cache hit */
    if (OidIsValid(last_roleid) && last_roleid == roleid)
        return last_roleid_is_super;
 
    /* Special escape path in case you deleted all your users. */
    if (!IsUnderPostmaster && roleid == BOOTSTRAP_SUPERUSERID)
        return true;
 
    /* OK, look up the information in pg_authid */
    rtup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
    if (HeapTupleIsValid(rtup))
    {
        result = ((Form_pg_authid) GETSTRUCT(rtup))->rolsuper;
        ReleaseSysCache(rtup);
    }
    else
    {
        /* Report "not superuser" for invalid roleids */
        result = false;
    }
 
    /* If first time through, set up callback for cache flushes */
    if (!roleid_callback_registered)
    {
        CacheRegisterSyscacheCallback(AUTHOID,
                                      RoleidCallback,
                                      (Datum) 0);
        roleid_callback_registered = true;
    }
 
    /* Cache the result for next time */
    last_roleid = roleid;
    last_roleid_is_super = result;
 
    return result;
}