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 7255CC433FE for ; Tue, 1 Nov 2022 10:53:25 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 1119A3CAC43 for ; Tue, 1 Nov 2022 11:53:23 +0100 (CET) Received: from in-5.smtp.seeweb.it (in-5.smtp.seeweb.it [IPv6:2001:4b78:1:20::5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id 1E5953CAC33 for ; Tue, 1 Nov 2022 11:53:12 +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-5.smtp.seeweb.it (Postfix) with ESMTPS id 0815E600776 for ; Tue, 1 Nov 2022 11:53:11 +0100 (CET) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 500A9338F7; Tue, 1 Nov 2022 10:53:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1667299991; h=from:from:reply-to: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=zv5sWdozu+O7aX/7hBbCGm1YVMNzj8HFuT1xodylsU0=; b=WE7j8PiqckReVFKP0tCpH+GFgn0ZkKMM9EdeuguPyVpHIkLbHXsK5kWcKwJn1OZiwlnI7e BN41Od2U2FMOMmpyvE6ZKFjgM3kpm/GFrfT/e7pVkRdFPJb/mGetpz00PXaWSFDWDrW4nw NPVsGbanjVyESmcQwyt2JgHnZknNKp8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1667299991; h=from:from:reply-to: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=zv5sWdozu+O7aX/7hBbCGm1YVMNzj8HFuT1xodylsU0=; b=hEBZBfaE4j+dZIZKfsWA0RtKRxhA01S6dJw5mJsZlC4A878k+ZFwLmCE/lE+qd6nHSsawo 773sXYcmmvB7C9BA== Received: from UNKNOWN (unknown [10.163.28.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id D7F932C141; Tue, 1 Nov 2022 10:53:10 +0000 (UTC) References: <20220808141632.10056-1-andrea.cervesato@suse.com> User-agent: mu4e 1.8.11; emacs 28.1 From: Richard Palethorpe To: Andrea Cervesato Date: Tue, 01 Nov 2022 10:38:33 +0000 Organization: Linux Private Site In-reply-to: <20220808141632.10056-1-andrea.cervesato@suse.com> Message-ID: <87cza79ca1.fsf@suse.de> MIME-Version: 1.0 X-Virus-Scanned: clamav-milter 0.102.4 at in-5.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH v1] Refactor pidns17 test 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: , Reply-To: rpalethorpe@suse.de 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" Hello, Andrea Cervesato via ltp writes: > Signed-off-by: Andrea Cervesato > --- > testcases/kernel/containers/pidns/pidns17.c | 189 ++++++-------------- > 1 file changed, 51 insertions(+), 138 deletions(-) > > diff --git a/testcases/kernel/containers/pidns/pidns17.c b/testcases/kernel/containers/pidns/pidns17.c > index cf0c5826f..1d3dd53bb 100644 > --- a/testcases/kernel/containers/pidns/pidns17.c > +++ b/testcases/kernel/containers/pidns/pidns17.c > @@ -1,162 +1,75 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > /* > -* Copyright (c) International Business Machines Corp., 2007 > -* This program is free software; you can redistribute it and/or modify > -* it under the terms of the GNU General Public License as published by > -* the Free Software Foundation; either version 2 of the License, or > -* (at your option) any later version. > -* This program is distributed in the hope that it will be useful, > -* but WITHOUT ANY WARRANTY; without even the implied warranty of > -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See > -* the GNU General Public License for more details. > -* You should have received a copy of the GNU General Public License > -* along with this program; if not, write to the Free Software > -* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA > -* > -*************************************************************************** > -* File: pidns17.c > -* * > -* * Description: > -* * The pidns17.c testcase verifies inside the container, if kill(-1, SIGUSR1) > -* * terminates all children running inside. > -* * > -* * Test Assertion & Strategy: > -* * Create a PID namespace container. > -* * Spawn many children inside it. > -* * Invoke kill(-1, SIGUSR1) inside container and check if it terminates > -* * all children. > -* * > -* * Usage: > -* * pidns17 > -* * > -* * History: > -* * DATE NAME DESCRIPTION > -* * 13/11/08 Gowrishankar M Creation of this test. > -* * > -* > -******************************************************************************/ > -#define _GNU_SOURCE 1 > -#include > -#include > -#include > -#include > -#include > -#include > -#include > -#include "pidns_helper.h" > -#include "test.h" > + * Copyright (c) International Business Machines Corp., 2007 > + * 13/11/08 Gowrishankar M > + * Copyright (C) 2022 SUSE LLC Andrea Cervesato > + */ > > -char *TCID = "pidns17"; > -int TST_TOTAL = 1; > +/*\ > + * [Description] > + * > + * Clone a process with CLONE_NEWPID flag and spawn many children inside the > + * container. Then terminate all children and check if they ended up. > + */ > > -int child_fn(void *); > +#include > +#include "tst_test.h" > +#include "lapi/namespaces_constants.h" > > -#define CHILD_PID 1 > -#define PARENT_PID 0 > +#define CHILDREN_NUM 10 > > -/* > - * child_fn() - Inside container > - */ > -int child_fn(void *arg) > +static int child_func(LTP_ATTRIBUTE_UNUSED void *arg) > { > - int children[10], exit_val, i, status; > - pid_t pid, ppid; > + int children[CHILDREN_NUM], status; > + unsigned int i, counter = 0; > + pid_t cpid, ppid; > > - /* Set process id and parent pid */ > - pid = getpid(); > + cpid = getpid(); > ppid = getppid(); > - if (pid != CHILD_PID || ppid != PARENT_PID) { > - printf("cinit: pidns was not created\n"); > - exit(1); > - } > > - exit_val = 0; > + if (cpid != 1 || ppid != 0) { > + tst_res(TFAIL, "Got unexpected result of cpid=%d ppid=%d", cpid, ppid); > + return 1; > + } Can use TST_EXP_EQ here as in pidns12 (or whatever I just merged). > > - /* Spawn many children */ > - for (i = 0; i < ARRAY_SIZE(children); i++) { > - switch ((children[i] = fork())) { > - case -1: > - perror("fork failed"); > - exit_val = 1; > - break; > - case 0: > + for (i = 0; i < CHILDREN_NUM; i++) { > + children[i] = SAFE_FORK(); > + if (!children[i]) { > pause(); > - /* XXX (garrcoop): why exit with an exit code of 2? */ > - exit(2); > - break; > - default: > - /* fork succeeded. */ > - break; > + return 0; > } > } > - /* wait for last child to get scheduled */ > - sleep(1); > > - if (kill(-1, SIGUSR1) == -1) { > - perror("cinit: kill(-1, SIGUSR1) failed"); > - exit_val = 1; > + SAFE_KILL(-1, SIGUSR1); > + > + for (i = 0; i < CHILDREN_NUM; i++) { > + SAFE_WAITPID(children[i], &status, 0); > + > + if (WIFSIGNALED(status) && WTERMSIG(status) == SIGUSR1) > + counter++; How do we debug this if the test fails? It would be nice to at least know how the child died. > } > > - for (i = 0; i < ARRAY_SIZE(children); i++) { > - if (waitpid(children[i], &status, 0) == -1) { > - perror("cinit: waitpid failed"); > - kill(children[i], SIGTERM); > - waitpid(children[i], &status, 0); > - exit_val = 1; > - } > - if (!(WIFSIGNALED(status) || WTERMSIG(status) == SIGUSR1)) { > - /* > - * XXX (garrcoop): this status reporting is overly > - * noisy. Someone obviously needs to read the > - * constraints documented in wait(2) a bit more > - * closely -- in particular the relationship between > - * WIFEXITED and WEXITSTATUS, and WIFSIGNALED and > - * WTERMSIG. > - */ > - printf("cinit: found a child alive still " > - "%d exit: %d, %d, signal %d, %d", i, > - WIFEXITED(status), WEXITSTATUS(status), > - WIFSIGNALED(status), WTERMSIG(status)); This only gets printed when the test fails, so it's not too noisy. The message is not correct either, but it would at least print how the child died. -- Thank you, Richard. -- Mailing list info: https://lists.linux.it/listinfo/ltp