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Message-ID: <202310270849.14B83B56D@keescook> Date: Fri, 27 Oct 2023 08:50:45 -0700 From: Kees Cook <keescook@...omium.org> To: Christoph Hellwig <hch@....de> Cc: Steven Rostedt <rostedt@...dmis.org>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, 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 v2] seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str() On Fri, Oct 27, 2023 at 06:54:51AM +0200, Christoph Hellwig wrote: > On Thu, Oct 26, 2023 at 12:40:37PM -0700, Kees Cook wrote: > > Solve two ergonomic issues with struct seq_buf; > > > > 1) Too much boilerplate is required to initialize: > > > > struct seq_buf s; > > char buf[32]; > > > > seq_buf_init(s, buf, sizeof(buf)); > > > > Instead, we can build this directly on the stack. Provide > > DECLARE_SEQ_BUF() macro to do this: > > > > DECLARE_SEQ_BUF(s, 32); > > DECLARE_SEQ_BUF_ONSTACK maybe? But otherwise this looks like a good > concept. It's usable for globals too... also it's a shorter name as-is. :) -- Kees Cook
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