From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9DA25C433EF for ; Tue, 15 Mar 2022 12:38:56 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id E1CF43C9319 for ; Tue, 15 Mar 2022 13:38:54 +0100 (CET) Received: from in-6.smtp.seeweb.it (in-6.smtp.seeweb.it [IPv6:2001:4b78:1:20::6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id BB8703C54E8 for ; Tue, 15 Mar 2022 13:38:39 +0100 (CET) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (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) (No client certificate requested) by in-6.smtp.seeweb.it (Postfix) with ESMTPS id E64D21400E71 for ; Tue, 15 Mar 2022 13:38:38 +0100 (CET) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 330E6210F0; Tue, 15 Mar 2022 12:38:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1647347918; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=oGGZTFHPmduNyc8ZObPwRt8Hv7DuJbkCX14+0PUnhB0=; b=M5LaUCm3RSgDYSKXsSzWmRs6fZww5VYxpGIVR5R3ONc/k04s0NGRNu/N3OcP8cpEpX5FZr eQBkRcuwMWf6NiTTEG6yskb1XC/kIndcdViqDlboTDWr88HLUfcFe6iT5ogj3jBrnIloOD LjzIVK0OpZ7Q1mZZcw6fUpJ5OEwN/1s= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1647347918; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=oGGZTFHPmduNyc8ZObPwRt8Hv7DuJbkCX14+0PUnhB0=; b=BYGXM+RNXZWx56caN0kA+7M31Mmz+UfBXx+nZh+0E9Ym0R8B2K32uVosfolNC0gBy+MmeG eJJW0XL9h92HjqBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 27E8613B59; Tue, 15 Mar 2022 12:38:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id I/m3Cc6IMGLSVgAAMHmgww (envelope-from ); Tue, 15 Mar 2022 12:38:38 +0000 Date: Tue, 15 Mar 2022 13:38:30 +0100 From: Cyril Hrubis To: Andrea Cervesato Message-ID: References: <20220310105916.7960-1-andrea.cervesato@suse.de> <20220310105916.7960-2-andrea.cervesato@suse.de> <048dca25-9519-5575-aadf-313250f8b011@suse.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <048dca25-9519-5575-aadf-313250f8b011@suse.com> X-Virus-Scanned: clamav-milter 0.102.4 at in-6.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH v2 01/10] Rewrite mesgq_nstest.c using new LTP API X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ltp@lists.linux.it Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi! > > And technically it would be best to call the msgget() with IPC_PRIVATE > > and then get the key by msgctl() IPC_STAT. > According with documentation and examples, msgget() is mostly used with > IPC_CREAT . What's the advantage of using IPC_PRIVATE in this case? If you pass IPC_PRIVATE instead of the hardcoded key kernel will pick an unused key for you, that's all. -- Cyril Hrubis chrubis@suse.cz -- Mailing list info: https://lists.linux.it/listinfo/ltp