grant.result, grant.test, sql_acl.cc:

  Fix for a bug #878


sql/sql_acl.cc:
  Fix for a bug #878
mysql-test/t/grant.test:
  Fix for a bug #878
mysql-test/r/grant.result:
  Fix for a bug #878

mysql-test/r/grant.result

@@ -100,6 +100,26 @@ GRANT SELECT, REFERENCES, REFERENCES (a) ON `test`.`t1` TO 'mysqltest_1'@'localh
 select table_priv,column_priv from mysql.tables_priv where user="mysqltest_1";
 table_priv	column_priv
 Select,References	References
+grant all on test.* to user1@localhost with grant option;
+revoke all on test.* from user1@localhost;
+show grants for user1@localhost;
+Grants for user1@localhost
+GRANT USAGE ON *.* TO 'user1'@'localhost'
+GRANT USAGE ON `test`.* TO 'user1'@'localhost' WITH GRANT OPTION
+revoke grant option on test.* from user1@localhost;
+show grants for user1@localhost;
+Grants for user1@localhost
+GRANT USAGE ON *.* TO 'user1'@'localhost'
+grant all on test.t1 to user2@localhost with grant option;
+revoke all on test.t1 from user2@localhost;
+show grants for user2@localhost;
+Grants for user2@localhost
+GRANT USAGE ON *.* TO 'user2'@'localhost'
+GRANT USAGE ON `test`.`t1` TO 'user2'@'localhost' WITH GRANT OPTION
+revoke grant option on test.t1 from user2@localhost;
+show grants for user2@localhost;
+Grants for user2@localhost
+GRANT USAGE ON *.* TO 'user2'@'localhost'
 delete from mysql.user where user='mysqltest_1';
 delete from mysql.db where user='mysqltest_1';
 delete from mysql.tables_priv where user='mysqltest_1';

mysql-test/t/grant.test

@@ -66,6 +66,16 @@ REVOKE insert,insert (a) on t1 from mysqltest_1@localhost;
 GRANT references on t1 to mysqltest_1@localhost;
 show grants for mysqltest_1@localhost;
 select table_priv,column_priv from mysql.tables_priv where user="mysqltest_1";
+grant all on test.* to user1@localhost with grant option;
+revoke all on test.* from user1@localhost;
+show grants for user1@localhost;
+revoke grant option on test.* from user1@localhost;
+show grants for user1@localhost;
+grant all on test.t1 to user2@localhost with grant option;
+revoke all on test.t1 from user2@localhost;
+show grants for user2@localhost;
+revoke grant option on test.t1 from user2@localhost;
+show grants for user2@localhost;
 delete from mysql.user where user='mysqltest_1';
 delete from mysql.db where user='mysqltest_1';
 delete from mysql.tables_priv where user='mysqltest_1';

sql/sql_acl.cc

@@ -3049,6 +3049,8 @@ int mysql_show_grants(THD *thd,LEX_USER *lex_user)
 
 	if (test_all_bits(table_access, (TABLE_ACLS & ~GRANT_ACL)))
 	  global.append("ALL PRIVILEGES",14);
+ 	else if (!(table_access & ~GRANT_ACL))
+ 	  global.append("USAGE",5);
 	else
 	{
 	  int found= 0;