linux-kernel - Re: [PATCH 2/2] kfifo: add kfifo

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

Message-Id: <20100812142211.59e24462.akpm@linux-foundation.org>
Date:	Thu, 12 Aug 2010 14:22:11 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andrea Righi <arighi@...eler.com>
Cc:	Stefani Seibold <stefani@...bold.net>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] kfifo: add kfifo_skip() testcase

On Thu, 12 Aug 2010 17:32:38 +0200
Andrea Righi <arighi@...eler.com> wrote:

> Add a testcase for kfifo_skip() to the byte stream fifo example.
> 
> Signed-off-by: Andrea Righi <arighi@...eler.com>
> ---
>  samples/kfifo/bytestream-example.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/samples/kfifo/bytestream-example.c b/samples/kfifo/bytestream-example.c
> index 642eef3..2e3a7a8 100644
> --- a/samples/kfifo/bytestream-example.c
> +++ b/samples/kfifo/bytestream-example.c
> @@ -73,6 +73,10 @@ static int __init testfunc(void)
>  	ret = kfifo_in(&test, buf, ret);
>  	printk(KERN_INFO "ret: %d\n", ret);
>  
> +	/* skip first element of the fifo */
> +	printk(KERN_INFO "skip 1st element\n");
> +	kfifo_skip(&test);
> +
>  	/* put values into the fifo until is full */
>  	for (i = 20; kfifo_put(&test, &i); i++)
>  		;

hm, that's not a very good test harness.  A better one would check that
the resulting kfifo actually contains the expected items in the
expected order.  AFACIT this will "pass" even if kfifo_skip() is a
no-op, or execs nethack or something.

Oh well, it's more than we usually get.
--
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/