From patchwork Tue Jan 12 09:57:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Doucha X-Patchwork-Id: 1425080 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it (client-ip=213.254.12.146; helo=picard.linux.it; envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.cz Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4DFQxd4zK9z9sWr for ; Tue, 12 Jan 2021 20:58:13 +1100 (AEDT) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 2D6D33C26DE for ; Tue, 12 Jan 2021 10:58:11 +0100 (CET) X-Original-To: ltp@lists.linux.it Delivered-To: ltp@picard.linux.it Received: from in-7.smtp.seeweb.it (in-7.smtp.seeweb.it [217.194.8.7]) by picard.linux.it (Postfix) with ESMTP id 0A8583C26DD for ; Tue, 12 Jan 2021 10:58:01 +0100 (CET) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by in-7.smtp.seeweb.it (Postfix) with ESMTPS id C114A200B05 for ; Tue, 12 Jan 2021 10:58:00 +0100 (CET) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1F89AAB92 for ; Tue, 12 Jan 2021 09:58:00 +0000 (UTC) From: Martin Doucha To: ltp@lists.linux.it Date: Tue, 12 Jan 2021 10:57:57 +0100 Message-Id: <20210112095759.11910-1-mdoucha@suse.cz> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.102.4 at in-7.smtp.seeweb.it X-Virus-Status: Clean X-Spam-Status: No, score=0.0 required=7.0 tests=SPF_HELO_NONE,SPF_PASS autolearn=disabled version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on in-7.smtp.seeweb.it Subject: [LTP] [PATCH v6 1/3] Add tst_kconfig_get() helper function 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: , Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" Signed-off-by: Martin Doucha --- Changes since v3: - new patch Changes since v4: - moved tst_kconfig_get() declaration to tst_private.h include/tst_private.h | 8 ++++++++ lib/tst_kconfig.c | 21 +++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/include/tst_private.h b/include/tst_private.h index e30d34740..fe0955f3b 100644 --- a/include/tst_private.h +++ b/include/tst_private.h @@ -29,4 +29,12 @@ void tst_print_svar_change(const char *name, const char *val); int tst_get_prefix(const char *ip_str, int is_ipv6); +/* + * Checks kernel config for a single configuration option and returns its + * state if found. The possible return values are the same as for + * tst_kconfig_var.choice, with the same meaning. See tst_kconfig_read() + * description in tst_kconfig.h. + */ +char tst_kconfig_get(const char *confname); + #endif diff --git a/lib/tst_kconfig.c b/lib/tst_kconfig.c index 734039e37..2b1087a8d 100644 --- a/lib/tst_kconfig.c +++ b/lib/tst_kconfig.c @@ -511,3 +511,24 @@ void tst_kconfig_check(const char *const kconfigs[]) if (abort_test) tst_brk(TCONF, "Aborting due to unsuitable kernel config, see above!"); } + +char tst_kconfig_get(const char *confname) +{ + struct tst_kconfig_var var; + + var.id_len = strlen(confname); + + if (var.id_len >= sizeof(var.id)) + tst_brk(TBROK, "Kconfig var name \"%s\" too long", confname); + + strcpy(var.id, confname); + var.choice = 0; + var.val = NULL; + + tst_kconfig_read(&var, 1); + + if (var.choice == 'v') + free(var.val); + + return var.choice; +}