From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1619AA034F; Sun, 21 Mar 2021 23:32:02 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id F1D46140DE0; Sun, 21 Mar 2021 23:31:57 +0100 (CET) Received: from wout3-smtp.messagingengine.com (wout3-smtp.messagingengine.com [64.147.123.19]) by mails.dpdk.org (Postfix) with ESMTP id 7148B140DDB for <dev@dpdk.org>; Sun, 21 Mar 2021 23:31:55 +0100 (CET) Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.west.internal (Postfix) with ESMTP id 12B2A1223; Sun, 21 Mar 2021 18:31:54 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Sun, 21 Mar 2021 18:31:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm3; bh=ql1ArSEH28J4g Ov97og9YPDLexCyN2SYZtqVQNJpwjA=; b=kQP+YlFPexdtZLToY0FVNhjpf2HTF bEImpu9ojSHw354Q1RHG5jpVd9maA5pn8NU+qiqxDgg5ivyLzyCgkn+YxwMyJjuH fIza5G1Q5pA0NU0oPavnjuHiN0goOrnZth09jO3/ayH8VmEHim+PcSUmuiu9g0Nb BUOteG475imW4uo1EIwqwPw3V6Z+rQ3ZJswESWLSEmHOVpi2vZ8xAxQ111N1Gz+L vqL5+6+biYKt2PCQne4Y/4SqAxQ+uGwwAk8GnuWEbZBONi0M7HKxVaWroMzr8zRb SYP9LkBMZBrJy/5p98dazzHEWdzC0Ysy2rw82GovxYkPLzJE97Wen8Hvg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=ql1ArSEH28J4gOv97og9YPDLexCyN2SYZtqVQNJpwjA=; b=Ggq6ZfHY F3VVcVxxDHZRb9TO/OYT0Xoq4BGnmnHMNp+nFXeKtFbmXfC3CyDe921uLsd0Qsb0 YWWj6Fw8tBxb4n/DayMc1WXbEa6AYai7GEJ9AhIn+0PkVdIxf080uEliNp68CP8p ObU8rKKPYgFFLPFcQ5kpw/6r3LiYFAUI2HO9ssRFcZZrYpXs54dP6yzyO2ZboTz1 9Z4P20MIECtG66pKrT4m9hPv99SPqmf2cvKPuVQpSBcwB2r7Yh+6SrKX/Q68Z+QH fOxt9jbbKZlQMTB43O7FOvA0OAZAfBvsbVmgVB5GXsrVIsLO93sNcv2Dx/d9pB64 3s/e4y0DYfdBlg== X-ME-Sender: <xms:WclXYJGm0tBRv22n7ZmbyFUVb-DvfmqpsA5etlf6H69GKQNrbAOtmQ> <xme:WclXYOVN-b5_vwYwDk6YvAvY6fzv1sr-bBZaERfzzkV4GxclZkwyHz1m-vMJpdOqJ mUbxxGutvuiWFtXPA> X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrudegvddgudeivdcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepvfhhohhm rghsucfoohhnjhgrlhhonhcuoehthhhomhgrshesmhhonhhjrghlohhnrdhnvghtqeenuc ggtffrrghtthgvrhhnpedvhefgiedvjeegtdevheefhfetleefgfeivefgffevfeejgedt gfeutdehtdegveenucfkphepjeejrddufeegrddvtdefrddukeegnecuvehluhhsthgvrh fuihiivgepudenucfrrghrrghmpehmrghilhhfrhhomhepthhhohhmrghssehmohhnjhgr lhhonhdrnhgvth X-ME-Proxy: <xmx:WclXYLJAnqh_XhrJg4s_8iOyLcCq4IZQI8hsJ0Z2WdYQMlu9sF51qQ> <xmx:WclXYPHjfD7kNqQX2NKkIjWbz_IwTXgW-BL061JVxFUsZ-cTTvqHSQ> <xmx:WclXYPVXZyxXM7dUoduKJ5Mua48cO6aRIQMIuyRkpcNv2U1CdGWRVw> <xmx:WclXYGcc2FsOcq7Mmc0-SnX3523yeE4H8sJsrJ0tOP9G9XBHmUE_xA> Received: from xps.monjalon.net (184.203.134.77.rev.sfr.net [77.134.203.184]) by mail.messagingengine.com (Postfix) with ESMTPA id B53AF24035D; Sun, 21 Mar 2021 18:31:52 -0400 (EDT) From: Thomas Monjalon <thomas@monjalon.net> To: dev@dpdk.org Cc: david.marchand@redhat.com, Bruce Richardson <bruce.richardson@intel.com>, Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> Date: Sun, 21 Mar 2021 23:31:05 +0100 Message-Id: <20210321223116.1340974-2-thomas@monjalon.net> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210321223116.1340974-1-thomas@monjalon.net> References: <20210309233116.1934666-1-thomas@monjalon.net> <20210321223116.1340974-1-thomas@monjalon.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v4 01/11] eal: explain argv behaviour during init X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> After argument parsing done by rte_eal_init(), the remaining arguments are to be parsed by the application by progressing in the argv array. In this context, the first string represented by argv[0] is still the same program name as the original argv[0], while the next strings are the application arguments. This is because rte_eal_init() manipulates the argv array after EAL parsing, before returning to the application. This note was missing in the doxygen comment of the API. Signed-off-by: Thomas Monjalon <thomas@monjalon.net> Acked-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> --- lib/librte_eal/include/rte_eal.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/librte_eal/include/rte_eal.h b/lib/librte_eal/include/rte_eal.h index eaf6469e50..0cbeedb594 100644 --- a/lib/librte_eal/include/rte_eal.h +++ b/lib/librte_eal/include/rte_eal.h @@ -76,6 +76,8 @@ int rte_eal_iopl_init(void); * @param argv * An array of strings. The contents of the array, as well as the strings * which are pointed to by the array, may be modified by this function. + * The program name pointer argv[0] is copied into the last parsed argv + * so that argv[0] is still the same after deducing the parsed arguments. * @return * - On success, the number of parsed arguments, which is greater or * equal to zero. After the call to rte_eal_init(), -- 2.30.1