Function boot_openrel

src/backend/bootstrap/bootstrap.c:631–670

---------------- * boot_openrel * * Execute BKI OPEN command. * ---------------- */

 * ----------------
 */
void
boot_openrel(char *relname)
{
	int			i;

	if (strlen(relname) >= NAMEDATALEN)
		relname[NAMEDATALEN - 1] = '\0';

	/*
	 * pg_type must be filled before any OPEN command is executed, hence we
	 * can now populate Typ if we haven't yet.
	 */
	if (Typ == NIL)
		populate_typ_list();

	if (boot_reldesc != NULL)
		closerel(NULL);

	elog(DEBUG4, "open relation %s, attrsize %d",
		 relname, (int) ATTRIBUTE_FIXED_PART_SIZE);

	boot_reldesc = table_openrv(makeRangeVar(NULL, relname, -1), NoLock);
	numattr = RelationGetNumberOfAttributes(boot_reldesc);
	for (i = 0; i < numattr; i++)
	{
		if (attrtypes[i] == NULL)
			attrtypes[i] = AllocateAttribute();
		memmove((char *) attrtypes[i],
				(char *) TupleDescAttr(boot_reldesc->rd_att, i),
				ATTRIBUTE_FIXED_PART_SIZE);

		{
			Form_pg_attribute at = attrtypes[i];

			elog(DEBUG4, "create attribute %d name %s len %d num %d type %u",
				 i, NameStr(at->attname), at->attlen, at->attnum,
				 at->atttypid);
		}
	}
}

/* ----------------
 *		closerel