From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id ED90246CF6 for ; Sun, 9 Jul 2023 09:57:42 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A98C668C5B9; Sun, 9 Jul 2023 12:57:39 +0300 (EEST) Received: from mail0.khirnov.net (red.khirnov.net [176.97.15.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id C1C3368C556 for ; Sun, 9 Jul 2023 12:57:32 +0300 (EEST) Received: from localhost (localhost [IPv6:::1]) by mail0.khirnov.net (Postfix) with ESMTP id 757532404EC for ; Sun, 9 Jul 2023 11:57:32 +0200 (CEST) Received: from mail0.khirnov.net ([IPv6:::1]) by localhost (mail0.khirnov.net [IPv6:::1]) (amavisd-new, port 10024) with ESMTP id Q0bYSA3DEj-V for ; Sun, 9 Jul 2023 11:57:31 +0200 (CEST) Received: from lain.khirnov.net (lain.khirnov.net [IPv6:2001:67c:1138:4306::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "lain.khirnov.net", Issuer "smtp.khirnov.net SMTP CA" (verified OK)) by mail0.khirnov.net (Postfix) with ESMTPS id E60C22404EA for ; Sun, 9 Jul 2023 11:57:31 +0200 (CEST) Received: by lain.khirnov.net (Postfix, from userid 1000) id CBCC31601B2; Sun, 9 Jul 2023 11:57:31 +0200 (CEST) From: Anton Khirnov To: FFmpeg development discussions and patches In-Reply-To: <6659e86-e959-9c42-ba13-8e1da890c46@passwd.hu> References: <20230707102136.16235-1-anton@khirnov.net> <6659e86-e959-9c42-ba13-8e1da890c46@passwd.hu> Mail-Followup-To: FFmpeg development discussions and patches Date: Sun, 09 Jul 2023 11:57:31 +0200 Message-ID: <168889665180.542.9354129396884912818@lain.khirnov.net> User-Agent: alot/0.8.1 MIME-Version: 1.0 Subject: Re: [FFmpeg-devel] [PATCH] lavu/random_seed: use getrandom() when available X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Quoting Marton Balint (2023-07-07 22:02:26) > > > On Fri, 7 Jul 2023, Anton Khirnov wrote: > > > It is a better interface for /dev/u?random on Linux, which avoids the > > issues associated with opening files. > > > getrandom() actually have the same problem as read(). It can read less > than requested. So you should use it in a loop in that case or if it > returns EINTR. I'm not convinced it's actually a problem. This API is intended for small secrets like keys and such, somebody trying to generate vast quantities of random data is likely misusing it and could just as well use LFG or something. Failing in that case seems like a good thing to me. -- Anton Khirnov _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".