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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7A58CA9EA1 for ; Fri, 18 Oct 2019 09:49:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5549222BD for ; Fri, 18 Oct 2019 09:49:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407765AbfJRJty (ORCPT ); Fri, 18 Oct 2019 05:49:54 -0400 Received: from correo.us.es ([193.147.175.20]:56032 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391488AbfJRJty (ORCPT ); Fri, 18 Oct 2019 05:49:54 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id BFE4C1C438D for ; Fri, 18 Oct 2019 11:49:49 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id AB0F1A6AD for ; Fri, 18 Oct 2019 11:49:49 +0200 (CEST) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id A09F9CA0F3; Fri, 18 Oct 2019 11:49:49 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 9A5EEFF13C for ; Fri, 18 Oct 2019 11:49:47 +0200 (CEST) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Fri, 18 Oct 2019 11:49:47 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (sys.soleta.eu [212.170.55.40]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id 8265C42EF4E0 for ; Fri, 18 Oct 2019 11:49:47 +0200 (CEST) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Subject: [PATCH libnftnl 1/2] flowtable: device array dynamic allocation Date: Fri, 18 Oct 2019 11:49:46 +0200 Message-Id: <20191018094947.9531-1-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Remove artificial upper limit of 8 devices per flowtable. Signed-off-by: Pablo Neira Ayuso --- src/flowtable.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/src/flowtable.c b/src/flowtable.c index 1f7ba3052d4f..54e1bea25775 100644 --- a/src/flowtable.c +++ b/src/flowtable.c @@ -358,30 +358,31 @@ static int nftnl_flowtable_parse_hook_cb(const struct nlattr *attr, void *data) static int nftnl_flowtable_parse_devs(struct nlattr *nest, struct nftnl_flowtable *c) { + const char **dev_array; + int len = 0, size = 8; struct nlattr *attr; - char *dev_array[8]; - int len = 0, i; + + dev_array = calloc(8, sizeof(char *)); + if (!dev_array) + return -1; mnl_attr_for_each_nested(attr, nest) { if (mnl_attr_get_type(attr) != NFTA_DEVICE_NAME) goto err; dev_array[len++] = strdup(mnl_attr_get_str(attr)); - if (len >= 8) - break; - } + if (len >= size) { + dev_array = realloc(dev_array, size * 2); + if (!dev_array) + goto err; - if (!len) - return -1; - - c->dev_array = calloc(len + 1, sizeof(char *)); - if (!c->dev_array) - goto err; + size *= 2; + memset(&dev_array[len], 0, size - len); + } + } + c->dev_array = dev_array; c->dev_array_len = len; - for (i = 0; i < len; i++) - c->dev_array[i] = dev_array[i]; - return 0; err: while (len--) -- 2.11.0