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Tue, 16 Aug 2022 11:32:26 +0000 To: ltp@lists.linux.it Date: Tue, 16 Aug 2022 13:31:42 +0200 Message-Id: <20220816113142.25638-4-andrea.cervesato@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220816113142.25638-1-andrea.cervesato@suse.com> References: <20220816113142.25638-1-andrea.cervesato@suse.com> 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=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE 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 v3 3/3] Refactor pidns31 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: , X-Patchwork-Original-From: Andrea Cervesato via ltp From: Andrea Cervesato Reply-To: Andrea Cervesato Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" Signed-off-by: Andrea Cervesato --- testcases/kernel/containers/pidns/pidns31.c | 347 +++++--------------- 1 file changed, 74 insertions(+), 273 deletions(-) diff --git a/testcases/kernel/containers/pidns/pidns31.c b/testcases/kernel/containers/pidns/pidns31.c index 8821ec83c..20f6117fd 100644 --- a/testcases/kernel/containers/pidns/pidns31.c +++ b/testcases/kernel/containers/pidns/pidns31.c @@ -1,330 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* -* Copyright (c) Bull S.A.S. 2008 -* 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: pidns31.c -* -* Description: -* This testcase checks if the si_pid is correctly set when a process -* that has registered for notification on a posix mqueue is in an -* ancestor namespace wrt the process that sends a message to that posix -* mqueue. -* -* Test Assertion & Strategy: -* Parent Child -* -------------------------------------------------------------------------- -* Create a POSIX mqueue. -* Create a PID namespace container. -* Register for notification when a -* message arrives in that mqueue -* Install a handler for SIGUSR1. -* Open that mqueue for writing -* Write something to the mqueue. -* Inside the handler, check that -* si_pid is set to the child's pid -* -* Usage: -* pidns31 -* -* History: -* DATE NAME DESCRIPTION -* 04/12/08 Nadia Derbey Creation of this test. -* -* -******************************************************************************/ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif -#include -#include -#include -#include -#include -#include -#include -#include "lapi/syscalls.h" -#include "pidns_helper.h" -#include "test.h" - -char *TCID = "pidns31"; -int TST_TOTAL = 1; - -char *mqname = "mq1"; -int result = TFAIL; - -int father_to_child[2]; + * Copyright (c) Bull S.A.S. 2008 + * 01/12/08 Nadia Derbey + * Copyright (C) 2022 SUSE LLC Andrea Cervesato + */ -#define CHILD_PID 1 -#define PARENT_PID 0 +/*\ + * [Description] + * + * Clone a process with CLONE_NEWPID flag, register notification on a posix + * mqueue and send a mqueue message from the child. Then check if signal + * notification contains si_pid of the child. + */ -#define MSG "HOW ARE YOU" -#define MSG_PRIO 1 +#define _GNU_SOURCE 1 +#include +#include +#include "tst_test.h" +#include "tst_safe_posix_ipc.h" +#include "lapi/namespaces_constants.h" -#define NO_STEP -1 -#define F_STEP_0 0x00 -#define F_STEP_1 0x01 -#define F_STEP_2 0x02 -#define F_STEP_3 0x03 -#define C_STEP_0 0x10 -#define C_STEP_1 0x11 +#define MQNAME "/LTP_PIDNS30_MQ" struct notify_info { mqd_t mqd; pid_t pid; }; -static void remove_pipe(int *fd) -{ - close(fd[0]); - close(fd[1]); -} +static mqd_t mqd = -1; +static volatile int received; static void remove_mqueue(mqd_t mqd) { - mq_close(mqd); - tst_syscall(__NR_mq_unlink, mqname); -} - -/* - * steps F_STEP_XX : called from main - * steps C_STEP_XX : called from child_fn - */ -static void cleanup_resources(int step, mqd_t mqd) -{ - switch (step) { - case C_STEP_1: - close(father_to_child[0]); - /* fall through */ - case C_STEP_0: - mq_close(mqd); - break; - - case F_STEP_3: - remove_mqueue(mqd); - close(father_to_child[1]); - break; - - case F_STEP_2: - tst_syscall(__NR_mq_notify, mqd, NULL); - /* fall through */ - case F_STEP_1: - remove_mqueue(mqd); - /* fall through */ - case F_STEP_0: - remove_pipe(father_to_child); - break; - default: - tst_resm(TWARN, "Unknown code - no resource removed."); - break; - } -} - -/* - * cleanup_mqueue() - performs all ONE TIME cleanup for this test at - * completion or premature exit. - * step == -1 means no local resource to remove. - */ -void cleanup_mqueue(int result, int step, mqd_t mqd) -{ - if (step != NO_STEP) - cleanup_resources(step, mqd); + if (mqd != -1) + SAFE_MQ_CLOSE(mqd); - tst_exit(); + mq_unlink(MQNAME); } -/* - * child_fn() - Inside container - */ -int child_fn(void *arg) +static void child_signal_handler(LTP_ATTRIBUTE_UNUSED int sig, siginfo_t *si, LTP_ATTRIBUTE_UNUSED void *unused) { - pid_t pid, ppid; - mqd_t mqd; - char buf[5]; - - /* Set process id and parent pid */ - pid = getpid(); - ppid = getppid(); - - if (pid != CHILD_PID || ppid != PARENT_PID) { - tst_resm(TBROK, "cinit: pidns is not created"); - cleanup_mqueue(TBROK, NO_STEP, 0); - } + struct notify_info *info; - /* Close the appropriate end of pipe */ - close(father_to_child[1]); + received = 0; - /* Is parent ready to receive a message? */ - read(father_to_child[0], buf, 5); - if (strcmp(buf, "f:ok")) { - tst_resm(TBROK, "cinit: parent did not send the message!"); - cleanup_mqueue(TBROK, NO_STEP, 0); - } - tst_resm(TINFO, "cinit: my father is ready to receive a message"); + tst_res(TINFO, "Received signal %s from pid %d", tst_strsig(si->si_signo), si->si_pid); - mqd = tst_syscall(__NR_mq_open, mqname, O_WRONLY, 0, NULL); - if (mqd == (mqd_t) - 1) { - tst_resm(TBROK, "cinit: mq_open() failed (%s)", - strerror(errno)); - cleanup_mqueue(TBROK, NO_STEP, 0); - } - tst_resm(TINFO, "cinit: mq_open succeeded"); + if (si->si_signo != SIGUSR1 || si->si_code != SI_MESGQ) + return; - if (mq_send(mqd, MSG, strlen(MSG), MSG_PRIO) == (mqd_t) - 1) { - tst_resm(TBROK, "cinit: mq_send() failed (%s)", - strerror(errno)); - cleanup_mqueue(TBROK, C_STEP_0, mqd); - } - tst_resm(TINFO, "cinit: mq_send() succeeded"); + info = (struct notify_info*)si->si_ptr; - /* Cleanup and exit */ - cleanup_resources(C_STEP_1, mqd); - exit(0); + if (si->si_pid == info->pid) + received++; } -/* - * father_signal_handler() - */ -static void father_signal_handler(int sig, siginfo_t * si, void *unused) +static int child_func(LTP_ATTRIBUTE_UNUSED void *arg) { - char buf[256]; - struct mq_attr attr; - struct notify_info *info; - - if (si->si_signo != SIGUSR1) { - tst_resm(TBROK, "father: received %s unexpectedly", - strsignal(si->si_signo)); - return; - } + pid_t cpid, ppid; + mqd_t mqd_child; - if (si->si_code != SI_MESGQ) { - tst_resm(TBROK, "father: expected signal code SI_MESGQ - " - "Got %d", si->si_code); - return; - } + cpid = getpid(); + ppid = getppid(); - if (!si->si_ptr) { - tst_resm(TBROK, "father: expected si_ptr - Got NULL"); - return; + if (cpid != 1 || ppid != 0) { + tst_res(TFAIL, "got unexpected result of cpid=%d ppid=%d", cpid, ppid); + return 0; } - info = (struct notify_info *)si->si_ptr; + TST_CHECKPOINT_WAIT(0); - if (si->si_pid != info->pid) { - tst_resm(TFAIL, - "father: expected signal originator PID = %d - Got %d", - info->pid, si->si_pid); - return; - } + mqd_child = SAFE_MQ_OPEN(MQNAME, O_WRONLY, 0, NULL); + SAFE_MQ_SEND(mqd_child, "pippo", 5, 1); - tst_resm(TPASS, "father: signal originator PID = %d", si->si_pid); - result = TPASS; + TST_CHECKPOINT_WAKE(0); - /* - * Now read the message - Be silent on errors since this is not the - * test purpose. - */ - if (!mq_getattr(info->mqd, &attr)) - mq_receive(info->mqd, buf, attr.mq_msgsize, NULL); + return 0; } -static void setup(void) +static void cleanup(void) { - tst_require_root(); - check_newpid(); + remove_mqueue(mqd); } -/*********************************************************************** -* M A I N -***********************************************************************/ - -int main(void) +static void run(void) { - pid_t cpid; - mqd_t mqd; - struct sigevent notif; + int cpid, status; struct sigaction sa; - int status; + struct sigevent notif; struct notify_info info; - setup(); - - if (pipe(father_to_child) == -1) { - tst_resm(TBROK, "parent: pipe() failed. aborting!"); - cleanup_mqueue(TBROK, NO_STEP, 0); - } + remove_mqueue(mqd); - tst_syscall(__NR_mq_unlink, mqname); - mqd = - tst_syscall(__NR_mq_open, mqname, O_RDWR | O_CREAT | O_EXCL, 0777, - NULL); - if (mqd == (mqd_t) - 1) { - tst_resm(TBROK, "parent: mq_open() failed (%s)", - strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_0, 0); - } - tst_resm(TINFO, "parent: successfully created posix mqueue"); + cpid = ltp_clone_quick(CLONE_NEWPID | SIGCHLD, child_func, NULL); + if (cpid < 0) + tst_brk(TBROK | TERRNO, "clone failed"); - /* container creation on PID namespace */ - cpid = ltp_clone_quick(CLONE_NEWPID | SIGCHLD, child_fn, NULL); - if (cpid < 0) { - tst_resm(TBROK, "parent: clone() failed(%s)", strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_1, mqd); - } - tst_resm(TINFO, "parent: successfully created child (pid = %d)", cpid); + mqd = SAFE_MQ_OPEN(MQNAME, O_RDWR | O_CREAT | O_EXCL, 0777, NULL); - /* Register for notification on message arrival */ notif.sigev_notify = SIGEV_SIGNAL; notif.sigev_signo = SIGUSR1; info.mqd = mqd; info.pid = cpid; notif.sigev_value.sival_ptr = &info; - if (tst_syscall(__NR_mq_notify, mqd, ¬if) == (mqd_t) -1) { - tst_resm(TBROK, "parent: mq_notify() failed (%s)", - strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_1, mqd); - } - tst_resm(TINFO, "parent: successfully registered for notification"); - /* Define handler for SIGUSR1 */ - sa.sa_flags = SA_SIGINFO; - sigemptyset(&sa.sa_mask); - sa.sa_sigaction = father_signal_handler; - if (sigaction(SIGUSR1, &sa, NULL) == -1) { - tst_resm(TBROK, "parent: sigaction() failed(%s)", - strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_2, mqd); - } - tst_resm(TINFO, "parent: successfully registered handler for SIGUSR1"); + SAFE_MQ_NOTIFY(mqd, ¬if); - /* Close the appropriate end of pipe */ - close(father_to_child[0]); + sa.sa_flags = SA_SIGINFO; + SAFE_SIGEMPTYSET(&sa.sa_mask); + sa.sa_sigaction = child_signal_handler; + SAFE_SIGACTION(SIGUSR1, &sa, NULL); - /* Tell the child a message can be sent */ - if (write(father_to_child[1], "f:ok", 5) != 5) { - tst_resm(TBROK, "parent: pipe is broken(%s)", strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_2, mqd); - } + TST_CHECKPOINT_WAKE_AND_WAIT(0); - sleep(3); + SAFE_WAITPID(cpid, &status, 0); - /* Wait for child to finish */ - if (wait(&status) == -1) { - tst_resm(TBROK, "parent: wait() failed(%s)", strerror(errno)); - cleanup_mqueue(TBROK, F_STEP_1, mqd); + if (received != 1) { + tst_res(TFAIL, "Signal hasn't been received after mqueue event"); + return; } - cleanup_mqueue(result, F_STEP_3, mqd); - - tst_exit(); + tst_res(TPASS, "Signal has been received after mqueue event"); } + +static struct tst_test test = { + .test_all = run, + .cleanup = cleanup, + .needs_root = 1, + .needs_checkpoints = 1, +};