linux-kernel - Re: [PATCH] tty: move the async flags from the serial code into the tty includes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 22 Aug 2012 14:19:49 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	shijie8@...il.com, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty: move the async flags from the serial code into the
 tty includes

On 08/21/2012 03:35 PM, Alan Cox wrote:
> From: Alan Cox <alan@...ux.intel.com>
> 
> These are used with the tty_port flags which are tty generic so move the
> flags into a more sensible place. This then makes it possible to add
> helpers such as those suggested by Huang Shijie.

Yes, the idea looks good to me. I was actually thinking of the same.

But there are two issues with this patch (see below).

> --- a/include/linux/serial.h
> +++ b/include/linux/serial.h
> @@ -15,6 +15,8 @@
>  #ifdef __KERNEL__
>  #include <asm/page.h>
>  
> +#include <linux/tty_flags.h>
> +

There are no minus lines in serial.h -- we have two copies of the flags
now? That looks insane.

The flags are a user API. You concealed them by the #include inside the
__KERNEL__ section (if I consider we do not have the flags defined twice).

And if we move the include outside of the __KERNEL__ section, we shall
update Kconfig, so that the new header is installed.

>  /*
>   * Counters of the input lines (CTS, DSR, RI, CD) interrupts
>   */
> diff --git a/include/linux/tty.h b/include/linux/tty.h
> index 69a787f..dbebd1e 100644
> --- a/include/linux/tty.h
> +++ b/include/linux/tty.h
> @@ -43,6 +43,7 @@
>  #include <linux/tty_driver.h>
>  #include <linux/tty_ldisc.h>
>  #include <linux/mutex.h>
> +#include <linux/tty_flags.h>

thanks,
-- 
js
suse labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/