linux-kernel - Re: [PATCH v2 2/4] lib/vsprintf.c: make '%pD' print the full path of file

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: <YNRjQ5dJpSYWbbRP@smile.fi.intel.com>
Date:   Thu, 24 Jun 2021 13:49:39 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Jia He <justin.he@....com>, Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Jonathan Corbet <corbet@....net>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Eric Biggers <ebiggers@...gle.com>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>,
        Christoph Hellwig <hch@...radead.org>, nd@....com
Subject: Re: [PATCH v2 2/4] lib/vsprintf.c: make '%pD' print the full path of
 file

On Thu, Jun 24, 2021 at 11:01:31AM +0200, Petr Mladek wrote:
> On Wed 2021-06-23 13:50:09, Jia He wrote:

...

> > If someone invokes snprintf() with small but positive space,
> > prepend_name_with_len() moves or truncates the string partially.
> 
> Does this comment belong to the 1st patch?
> prepend_name_with_len() is not called in this patch.
> 
> > More
> > than that, kasprintf() will pass NULL @buf and @end as the parameters,
> > and @end - @buf can be negative in some case. Hence make it return at
> > the very beginning with false in these cases.
> 
> Same here. file_d_path_name() does not return bool.

It was my (apparently unclear) suggestion either to move it here, or be
rewritten in generic way as you suggested in the other thread.

-- 
With Best Regards,
Andy Shevchenko