1 /*------------------------------------------------------------------------- 2 * 3 * pg_init_privs.h 4 * definition of the "initial privileges" system catalog (pg_init_privs) 5 * 6 * NOTE: an object is identified by the OID of the row that primarily 7 * defines the object, plus the OID of the table that that row appears in. 8 * For example, a function is identified by the OID of its pg_proc row 9 * plus the pg_class OID of table pg_proc. This allows unique identification 10 * of objects without assuming that OIDs are unique across tables. 11 * 12 * Since attributes don't have OIDs of their own, we identify an attribute 13 * privilege by the objoid+classoid of its parent table, plus an "objsubid" 14 * giving the attribute column number. "objsubid" must be zero in a privilege 15 * for a table itself, so that it is distinct from any column privilege. 16 * Currently, objsubid is unused and zero for all other kinds of objects. 17 * 18 * Because the contents of this table depend on what is done with the other 19 * objects in the system (and, in particular, may change due to changes in 20 * system_views.sql), there is no pg_init_privs.dat file. The initial contents 21 * are loaded near the end of initdb. 22 * 23 * 24 * Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group 25 * Portions Copyright (c) 1994, Regents of the University of California 26 * 27 * src/include/catalog/pg_init_privs.h 28 * 29 * NOTES 30 * The Catalog.pm module reads this file and derives schema 31 * information. 32 * 33 *------------------------------------------------------------------------- 34 */ 35 #ifndef PG_INIT_PRIVS_H 36 #define PG_INIT_PRIVS_H 37 38 #include "catalog/genbki.h" 39 #include "catalog/pg_init_privs_d.h" 40 41 /* ---------------- 42 * pg_init_privs definition. cpp turns this into 43 * typedef struct FormData_pg_init_privs 44 * ---------------- 45 */ 46 CATALOG(pg_init_privs,3394,InitPrivsRelationId) BKI_WITHOUT_OIDS 47 { 48 Oid objoid; /* OID of object itself */ 49 Oid classoid; /* OID of table containing object */ 50 int32 objsubid; /* column number, or 0 if not used */ 51 char privtype; /* from initdb or extension? */ 52 53 #ifdef CATALOG_VARLEN /* variable-length fields start here */ 54 aclitem initprivs[1] BKI_FORCE_NOT_NULL; /* initial privs on object */ 55 #endif 56 } FormData_pg_init_privs; 57 58 /* ---------------- 59 * Form_pg_init_privs corresponds to a pointer to a tuple with 60 * the format of pg_init_privs relation. 61 * ---------------- 62 */ 63 typedef FormData_pg_init_privs * Form_pg_init_privs; 64 65 /* 66 * It is important to know if the initial privileges are from initdb or from an 67 * extension. This enum is used to provide that differentiation and the two 68 * places which populate this table (initdb and during CREATE EXTENSION, see 69 * recordExtensionInitPriv()) know to use the correct values. 70 */ 71 72 typedef enum InitPrivsType 73 { 74 INITPRIVS_INITDB = 'i', 75 INITPRIVS_EXTENSION = 'e' 76 } InitPrivsType; 77 78 #endif /* PG_INIT_PRIVS_H */ 79