int(32) not documented

I did not found in KB the meaning of int(32)

I guess this is not a server bug representing disk size in int . 2G disk only

So is this only information schema specific ?
Does SQL mode oracle do map int(32) to bigint as well ?
Can now int(32) represente a 32 bytes integer and not only the padding like always ?

show create table information_schema.DISKS;
CREATE TEMPORARY TABLE `DISKS` (
`Disk` varchar(4096) NOT NULL DEFAULT '',
`Path` varchar(4096) NOT NULL DEFAULT '',
`Total` int(32) NOT NULL DEFAULT 0,
`Used` int(32) NOT NULL DEFAULT 0,
`Available` int(32) NOT NULL DEFAULT 0
) ENGINE=MEMORY DEFAULT CHARSET=utf8

/tx