linux-hardening - Re: [PATCH] seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf

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Message-ID: <20231026140247.3a3c68e4@gandalf.local.home>
Date: Thu, 26 Oct 2023 14:02:47 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Kees Cook <keescook@...omium.org>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>, Christoph Hellwig
 <hch@....de>, Justin Stitt <justinstitt@...gle.com>, Kent Overstreet
 <kent.overstreet@...ux.dev>, Petr Mladek <pmladek@...e.com>, Andy
 Shevchenko <andriy.shevchenko@...ux.intel.com>, Rasmus Villemoes
 <linux@...musvillemoes.dk>, Sergey Senozhatsky <senozhatsky@...omium.org>,
 Masami Hiramatsu <mhiramat@...nel.org>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, Arnd Bergmann <arnd@...db.de>, Jonathan
 Corbet <corbet@....net>, Yun Zhou <yun.zhou@...driver.com>, Jacob Keller
 <jacob.e.keller@...el.com>, Zhen Lei <thunder.leizhen@...wei.com>,
 linux-trace-kernel@...r.kernel.org, Yosry Ahmed <yosryahmed@...gle.com>,
 linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_cstr()

On Thu, 26 Oct 2023 10:54:26 -0700
Kees Cook <keescook@...omium.org> wrote:

> > Do we really need to call it _cstr? Why not just have seq_buf_str() ?
> > 
> > I mean, this is C, do we need to state that in the name too?  
> 
> I'm fine either way. I did that just to make the distinction between our
> length-managed string of characters interface (seq_buf), and the
> %NUL-terminated string of characters (traditionally called "C String" in
> other languages). And it was still shorter than "seq_buf_terminate(s);
> s->buffer" ;)

Do you believe that people might get confused with it as seq_buf_str()?

Can you envision that we would want a seq_buf_str() and seq_buf_cstr() that
do something different?

-- Steve