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Date: Tue, 15 Nov 2011 19:48:15 +0800
From: Américo Wang <xiyou.wangcong@...il.com>
To: Vasiliy Kulikov <segoon@...nwall.com>
Cc: kernel-hardening@...ts.openwall.com, 
	Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, 
	Alexey Dobriyan <adobriyan@...il.com>, Al Viro <viro@...iv.linux.org.uk>, 
	"H. Peter Anvin" <hpa@...or.com>, Greg KH <greg@...ah.com>, Theodore Tso <tytso@....edu>, 
	Alan Cox <alan@...rguk.ukuu.org.uk>, Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC 1/3] procfs: parse mount options

On Tue, Nov 15, 2011 at 7:21 PM, Vasiliy Kulikov <segoon@...nwall.com> wrote:
> +
> +static int proc_parse_options(char *options, struct pid_namespace *pid)
> +{
> +       char *p;
> +       substring_t args[MAX_OPT_ARGS];
> +       int option;


'option' is unused?

> +
> +       pr_debug("proc: options = %s\n", options);
> +
> +       if (!options)
> +               return 1;
> +
> +       while ((p = strsep(&options, ",")) != NULL) {
> +               int token;
> +               if (!*p)
> +                       continue;
> +
> +               args[0].to = args[0].from = 0;
> +               token = match_token(p, tokens, args);
> +               switch (token) {
> +               default:


This switch block reads odd...

> +                       pr_err("proc: unrecognized mount option \"%s\" "
> +                              "or missing value", p);

"\n" is needed.

> +                       return 0;
> +               }
> +       }
> +
> +       return 1;
> +}


Regards.

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