Re: [PATCH 18/18] flag parameters: check magic constants

From: Andrew Morton
Date: Fri May 23 2008 - 01:24:11 EST


On Tue, 6 May 2008 17:18:07 -0400 Ulrich Drepper <drepper@xxxxxxxxxx> wrote:

> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -1219,6 +1219,13 @@ asmlinkage long sys_socket(int family, int type, int protocol)
> struct socket *sock;
> int flags;
>
> + /* Check the SOCK_* constants for consistency. */
> + BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC);
> + BUILD_BUG_ON(SOCK_NONBLOCK != O_NONBLOCK);
> + BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK);
> + BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK);
> + BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);

On alpha the

BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);

seems to have gone away, but now

BUILD_BUG_ON(SOCK_NONBLOCK != O_NONBLOCK);

is triggering.

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