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https://github.com/postgres/postgres.git
synced 2025-07-27 12:41:57 +03:00
Add current_schema() and current_schemas() inquiry functions.
Update has_table_privilege functions to cope with schema-qualified names in the same way as nextval() and others.
This commit is contained in:
Tom Lane
@ -13,7 +13,7 @@
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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/catalog/namespace.c,v 1.12 2002/04/25 02:56:55 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.13 2002/04/26 01:24:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1470,3 +1470,14 @@ InitializeSearchPath(void)
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assign_search_path(namespace_search_path);
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}
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}
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/*
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* Fetch the active search path, expressed as a List of OIDs.
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*
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* NB: caller must treat the list as read-only!
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*/
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List *
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fetch_search_path(void)
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{
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return namespaceSearchPath;
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}
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.71 2002/04/21 00:26:43 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/acl.c,v 1.72 2002/04/26 01:24:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -35,12 +35,7 @@ static bool aclitemeq(const AclItem *a1, const AclItem *a2);
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static bool aclitemgt(const AclItem *a1, const AclItem *a2);
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static AclMode convert_priv_string(text *priv_type_text);
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static bool has_table_privilege_cname_cname(char *username, char *relname,
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text *priv_type_text);
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static bool has_table_privilege_cname_id(char *username, Oid reloid,
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text *priv_type_text);
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static bool has_table_privilege_id_cname(int32 usesysid, char *relname,
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text *priv_type_text);
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static Oid convert_rel_name(text *relname);
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/*
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@ -653,7 +648,7 @@ aclcontains(PG_FUNCTION_ARGS)
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/*
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* has_table_privilege_name_name
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* Check user privileges on a relation given
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* name username, name relname, and text priv name.
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* name username, text relname, and text priv name.
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*
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* RETURNS
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* a boolean value
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@ -664,22 +659,41 @@ Datum
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has_table_privilege_name_name(PG_FUNCTION_ARGS)
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{
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Name username = PG_GETARG_NAME(0);
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Name relname = PG_GETARG_NAME(1);
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text *relname = PG_GETARG_TEXT_P(1);
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text *priv_type_text = PG_GETARG_TEXT_P(2);
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bool result;
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int32 usesysid;
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Oid reloid;
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AclMode mode;
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int32 aclresult;
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result = has_table_privilege_cname_cname(NameStr(*username),
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NameStr(*relname),
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priv_type_text);
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/*
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* Lookup userid based on username
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*/
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usesysid = get_usesysid(NameStr(*username));
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PG_RETURN_BOOL(result);
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/*
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* Lookup rel OID based on relname
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*/
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reloid = convert_rel_name(relname);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Check for the privilege
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*/
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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/*
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* has_table_privilege_name
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* Check user privileges on a relation given
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* name relname and text priv name.
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* text relname and text priv name.
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* current_user is assumed
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*
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* RETURNS
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@ -690,18 +704,31 @@ has_table_privilege_name_name(PG_FUNCTION_ARGS)
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Datum
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has_table_privilege_name(PG_FUNCTION_ARGS)
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{
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Name relname = PG_GETARG_NAME(0);
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text *relname = PG_GETARG_TEXT_P(0);
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text *priv_type_text = PG_GETARG_TEXT_P(1);
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int32 usesysid;
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bool result;
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Oid reloid;
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AclMode mode;
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int32 aclresult;
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usesysid = GetUserId();
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result = has_table_privilege_id_cname(usesysid,
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NameStr(*relname),
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priv_type_text);
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/*
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* Lookup rel OID based on relname
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*/
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reloid = convert_rel_name(relname);
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PG_RETURN_BOOL(result);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Check for the privilege
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*/
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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@ -721,13 +748,26 @@ has_table_privilege_name_id(PG_FUNCTION_ARGS)
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Name username = PG_GETARG_NAME(0);
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Oid reloid = PG_GETARG_OID(1);
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text *priv_type_text = PG_GETARG_TEXT_P(2);
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bool result;
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int32 usesysid;
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AclMode mode;
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int32 aclresult;
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result = has_table_privilege_cname_id(NameStr(*username),
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reloid,
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priv_type_text);
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/*
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* Lookup userid based on username
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*/
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usesysid = get_usesysid(NameStr(*username));
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PG_RETURN_BOOL(result);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Check for the privilege
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*/
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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@ -749,7 +789,7 @@ has_table_privilege_id(PG_FUNCTION_ARGS)
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text *priv_type_text = PG_GETARG_TEXT_P(1);
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int32 usesysid;
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AclMode mode;
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int32 result;
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int32 aclresult;
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usesysid = GetUserId();
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@ -761,19 +801,16 @@ has_table_privilege_id(PG_FUNCTION_ARGS)
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/*
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* Check for the privilege
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*/
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result = pg_class_aclcheck(reloid, usesysid, mode);
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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if (result == ACLCHECK_OK)
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PG_RETURN_BOOL(true);
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else
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PG_RETURN_BOOL(false);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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/*
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* has_table_privilege_id_name
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* Check user privileges on a relation given
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* usesysid, name relname, and priv name.
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* usesysid, text relname, and priv name.
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*
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* RETURNS
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* a boolean value
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@ -784,15 +821,28 @@ Datum
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has_table_privilege_id_name(PG_FUNCTION_ARGS)
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{
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int32 usesysid = PG_GETARG_INT32(0);
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Name relname = PG_GETARG_NAME(1);
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text *relname = PG_GETARG_TEXT_P(1);
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text *priv_type_text = PG_GETARG_TEXT_P(2);
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bool result;
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Oid reloid;
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AclMode mode;
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int32 aclresult;
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result = has_table_privilege_id_cname(usesysid,
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NameStr(*relname),
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priv_type_text);
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/*
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* Lookup rel OID based on relname
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*/
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reloid = convert_rel_name(relname);
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PG_RETURN_BOOL(result);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Check for the privilege
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*/
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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@ -813,7 +863,7 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
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Oid reloid = PG_GETARG_OID(1);
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text *priv_type_text = PG_GETARG_TEXT_P(2);
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AclMode mode;
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int32 result;
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int32 aclresult;
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/*
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* Convert priv_type_text to an AclMode
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@ -823,18 +873,29 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
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/*
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* Check for the privilege
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*/
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result = pg_class_aclcheck(reloid, usesysid, mode);
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aclresult = pg_class_aclcheck(reloid, usesysid, mode);
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if (result == ACLCHECK_OK)
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PG_RETURN_BOOL(true);
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else
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PG_RETURN_BOOL(false);
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PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
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}
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/*
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* Internal functions.
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*/
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/*
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* Given a relation name expressed as a string, look it up and return Oid
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*/
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static Oid
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convert_rel_name(text *relname)
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{
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RangeVar *relrv;
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relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname,
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"has_table_privilege"));
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return RangeVarGetRelid(relrv, false);
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}
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/*
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* convert_priv_string
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* Internal function.
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@ -843,11 +904,13 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
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* RETURNS
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* AclMode
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*/
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static AclMode
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convert_priv_string(text *priv_type_text)
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{
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char *priv_type = DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(priv_type_text)));
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char *priv_type;
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priv_type = DatumGetCString(DirectFunctionCall1(textout,
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PointerGetDatum(priv_type_text)));
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/*
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* Return mode from priv_type string
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@ -880,114 +943,3 @@ convert_priv_string(text *priv_type_text)
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*/
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return ACL_NO_RIGHTS;
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}
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/*
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* has_table_privilege_cname_cname
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* Check user privileges on a relation given
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* char *usename, char *relname, and text priv name.
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*
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* RETURNS
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* a boolean value
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* 't' indicating user has the privilege
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* 'f' indicating user does not have the privilege
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*/
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static bool
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has_table_privilege_cname_cname(char *username, char *relname,
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text *priv_type_text)
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{
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int32 usesysid;
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/*
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* Lookup userid based on username
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*/
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usesysid = get_usesysid(username);
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/*
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* Make use of has_table_privilege_id_cname. It accepts the arguments
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* we now have.
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*/
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return has_table_privilege_id_cname(usesysid, relname, priv_type_text);
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}
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/*
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* has_table_privilege_cname_id
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* Check user privileges on a relation given
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* char *usename, rel oid, and text priv name.
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*
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* RETURNS
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* a boolean value
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* 't' indicating user has the privilege
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* 'f' indicating user does not have the privilege
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*/
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static bool
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has_table_privilege_cname_id(char *username, Oid reloid,
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text *priv_type_text)
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{
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int32 usesysid;
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AclMode mode;
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int32 result;
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/*
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* Lookup userid based on username
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*/
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usesysid = get_usesysid(username);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Finally, check for the privilege
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*/
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result = pg_class_aclcheck(reloid, usesysid, mode);
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if (result == ACLCHECK_OK)
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return true;
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else
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return false;
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}
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/*
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* has_table_privilege_id_cname
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* Check user privileges on a relation given
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* usesysid, char *relname, and text priv name.
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*
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* RETURNS
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* a boolean value
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* 't' indicating user has the privilege
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* 'f' indicating user does not have the privilege
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*/
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static bool
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has_table_privilege_id_cname(int32 usesysid, char *relname,
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text *priv_type_text)
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{
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Oid reloid;
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AclMode mode;
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int32 result;
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/*
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* Convert relname to rel OID.
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*/
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reloid = RelnameGetRelid(relname);
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if (!OidIsValid(reloid))
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elog(ERROR, "has_table_privilege: relation \"%s\" does not exist",
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relname);
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/*
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* Convert priv_type_text to an AclMode
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*/
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mode = convert_priv_string(priv_type_text);
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/*
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* Finally, check for the privilege
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*/
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result = pg_class_aclcheck(reloid, usesysid, mode);
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if (result == ACLCHECK_OK)
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return true;
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else
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return false;
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}
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@ -12,14 +12,18 @@
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*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $Header: /cvsroot/pgsql/src/backend/utils/adt/name.c,v 1.33 2001/10/28 06:25:52 momjian Exp $
|
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/name.c,v 1.34 2002/04/26 01:24:08 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "catalog/namespace.h"
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#include "miscadmin.h"
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#include "utils/array.h"
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#include "utils/builtins.h"
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#include "utils/lsyscache.h"
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/*****************************************************************************
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* USER I/O ROUTINES (none) *
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@ -209,7 +213,9 @@ namestrcmp(Name name, const char *str)
|
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}
|
||||
|
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|
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/* SQL-functions CURRENT_USER and SESSION_USER */
|
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/*
|
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* SQL-functions CURRENT_USER, SESSION_USER
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*/
|
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Datum
|
||||
current_user(PG_FUNCTION_ARGS)
|
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{
|
||||
@ -223,6 +229,52 @@ session_user(PG_FUNCTION_ARGS)
|
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}
|
||||
|
||||
|
||||
/*
|
||||
* SQL-functions CURRENT_SCHEMA, CURRENT_SCHEMAS
|
||||
*/
|
||||
Datum
|
||||
current_schema(PG_FUNCTION_ARGS)
|
||||
{
|
||||
List *search_path = fetch_search_path();
|
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char *nspname;
|
||||
|
||||
if (search_path == NIL)
|
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PG_RETURN_NULL();
|
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nspname = get_namespace_name((Oid) lfirsti(search_path));
|
||||
PG_RETURN_DATUM(DirectFunctionCall1(namein, CStringGetDatum(nspname)));
|
||||
}
|
||||
|
||||
Datum
|
||||
current_schemas(PG_FUNCTION_ARGS)
|
||||
{
|
||||
List *search_path = fetch_search_path();
|
||||
int nnames = length(search_path);
|
||||
Datum *names;
|
||||
int i;
|
||||
ArrayType *array;
|
||||
|
||||
/* +1 here is just to avoid palloc(0) error */
|
||||
names = (Datum *) palloc((nnames + 1) * sizeof(Datum));
|
||||
i = 0;
|
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while (search_path)
|
||||
{
|
||||
char *nspname;
|
||||
|
||||
nspname = get_namespace_name((Oid) lfirsti(search_path));
|
||||
names[i] = DirectFunctionCall1(namein, CStringGetDatum(nspname));
|
||||
i++;
|
||||
search_path = lnext(search_path);
|
||||
}
|
||||
|
||||
array = construct_array(names, nnames,
|
||||
false, /* Name is not by-val */
|
||||
NAMEDATALEN, /* sizeof(Name) */
|
||||
'i'); /* alignment of Name */
|
||||
|
||||
PG_RETURN_POINTER(array);
|
||||
}
|
||||
|
||||
|
||||
/*****************************************************************************
|
||||
* PRIVATE ROUTINES *
|
||||
*****************************************************************************/
|
||||
|
||||
@ -37,7 +37,7 @@
|
||||
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: catversion.h,v 1.126 2002/04/25 02:56:56 tgl Exp $
|
||||
* $Id: catversion.h,v 1.127 2002/04/26 01:24:08 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -53,6 +53,6 @@
|
||||
*/
|
||||
|
||||
/* yyyymmddN */
|
||||
#define CATALOG_VERSION_NO 200204242
|
||||
#define CATALOG_VERSION_NO 200204251
|
||||
|
||||
#endif
|
||||
|
||||
@ -7,7 +7,7 @@
|
||||
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: namespace.h,v 1.10 2002/04/25 02:56:56 tgl Exp $
|
||||
* $Id: namespace.h,v 1.11 2002/04/26 01:24:08 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -79,4 +79,6 @@ extern bool check_search_path(const char *proposed);
|
||||
extern void assign_search_path(const char *newval);
|
||||
extern void InitializeSearchPath(void);
|
||||
|
||||
extern List *fetch_search_path(void);
|
||||
|
||||
#endif /* NAMESPACE_H */
|
||||
|
||||
@ -7,7 +7,7 @@
|
||||
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: pg_proc.h,v 1.233 2002/04/25 02:56:56 tgl Exp $
|
||||
* $Id: pg_proc.h,v 1.234 2002/04/26 01:24:08 tgl Exp $
|
||||
*
|
||||
* NOTES
|
||||
* The script catalog/genbki.sh reads this file and generates .bki
|
||||
@ -1751,6 +1751,11 @@ DESCR("convert varchar to name");
|
||||
DATA(insert OID = 1401 ( varchar PGNSP PGUID 12 f t t t f i 1 1043 "19" 100 0 0 100 name_text - _null_ ));
|
||||
DESCR("convert name to varchar");
|
||||
|
||||
DATA(insert OID = 1402 ( current_schema PGNSP PGUID 12 f t f t f s 0 19 "0" 100 0 0 100 current_schema - _null_ ));
|
||||
DESCR("current schema name");
|
||||
DATA(insert OID = 1403 ( current_schemas PGNSP PGUID 12 f t f t f s 0 1003 "0" 100 0 0 100 current_schemas - _null_ ));
|
||||
DESCR("current schema search list");
|
||||
|
||||
DATA(insert OID = 1406 ( isvertical PGNSP PGUID 12 f t f t f i 2 16 "600 600" 100 0 0 100 point_vert - _null_ ));
|
||||
DESCR("vertically aligned?");
|
||||
DATA(insert OID = 1407 ( ishorizontal PGNSP PGUID 12 f t f t f i 2 16 "600 600" 100 0 0 100 point_horiz - _null_ ));
|
||||
@ -2663,15 +2668,15 @@ DESCR("unary plus");
|
||||
DATA(insert OID = 1915 ( numeric_uplus PGNSP PGUID 12 f t f t f i 1 1700 "1700" 100 0 0 100 numeric_uplus - _null_ ));
|
||||
DESCR("unary plus");
|
||||
|
||||
DATA(insert OID = 1922 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "19 19 25" 100 0 0 100 has_table_privilege_name_name - _null_ ));
|
||||
DATA(insert OID = 1922 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "19 25 25" 100 0 0 100 has_table_privilege_name_name - _null_ ));
|
||||
DESCR("user privilege on relation by username, relname");
|
||||
DATA(insert OID = 1923 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "19 26 25" 100 0 0 100 has_table_privilege_name_id - _null_ ));
|
||||
DESCR("user privilege on relation by username, rel oid");
|
||||
DATA(insert OID = 1924 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "23 19 25" 100 0 0 100 has_table_privilege_id_name - _null_ ));
|
||||
DATA(insert OID = 1924 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "23 25 25" 100 0 0 100 has_table_privilege_id_name - _null_ ));
|
||||
DESCR("user privilege on relation by usesysid, relname");
|
||||
DATA(insert OID = 1925 ( has_table_privilege PGNSP PGUID 12 f t f t f s 3 16 "23 26 25" 100 0 0 100 has_table_privilege_id_id - _null_ ));
|
||||
DESCR("user privilege on relation by usesysid, rel oid");
|
||||
DATA(insert OID = 1926 ( has_table_privilege PGNSP PGUID 12 f t f t f s 2 16 "19 25" 100 0 0 100 has_table_privilege_name - _null_ ));
|
||||
DATA(insert OID = 1926 ( has_table_privilege PGNSP PGUID 12 f t f t f s 2 16 "25 25" 100 0 0 100 has_table_privilege_name - _null_ ));
|
||||
DESCR("current user privilege on relation by relname");
|
||||
DATA(insert OID = 1927 ( has_table_privilege PGNSP PGUID 12 f t f t f s 2 16 "26 25" 100 0 0 100 has_table_privilege_id - _null_ ));
|
||||
DESCR("current user privilege on relation by rel oid");
|
||||
|
||||
@ -7,7 +7,7 @@
|
||||
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: builtins.h,v 1.179 2002/04/25 02:56:56 tgl Exp $
|
||||
* $Id: builtins.h,v 1.180 2002/04/26 01:24:08 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -164,6 +164,8 @@ extern int namestrcpy(Name name, const char *str);
|
||||
extern int namestrcmp(Name name, const char *str);
|
||||
extern Datum current_user(PG_FUNCTION_ARGS);
|
||||
extern Datum session_user(PG_FUNCTION_ARGS);
|
||||
extern Datum current_schema(PG_FUNCTION_ARGS);
|
||||
extern Datum current_schemas(PG_FUNCTION_ARGS);
|
||||
|
||||
/* numutils.c */
|
||||
extern int32 pg_atoi(char *s, int size, int c);
|
||||
|
||||
@ -240,7 +240,7 @@ select has_table_privilege(NULL,'pg_shadow','select');
|
||||
(1 row)
|
||||
|
||||
select has_table_privilege('pg_shad','select');
|
||||
ERROR: has_table_privilege: relation "pg_shad" does not exist
|
||||
ERROR: Relation "pg_shad" does not exist
|
||||
select has_table_privilege('nosuchuser','pg_shadow','select');
|
||||
ERROR: user "nosuchuser" does not exist
|
||||
select has_table_privilege('pg_shadow','sel');
|
||||
|
||||
Reference in New Issue
Block a user