diff options
Diffstat (limited to 'testcases/kernel/containers/pidns/pidns16.c')
| -rw-r--r-- | testcases/kernel/containers/pidns/pidns16.c | 192 |
1 files changed, 61 insertions, 131 deletions
diff --git a/testcases/kernel/containers/pidns/pidns16.c b/testcases/kernel/containers/pidns/pidns16.c index 2ee61065a..313b0a097 100644 --- a/testcases/kernel/containers/pidns/pidns16.c +++ b/testcases/kernel/containers/pidns/pidns16.c @@ -1,157 +1,87 @@ +// 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 -* -*************************************************************************** - -* * Test Assertion. -* *---------------- -* * kill -USR1 container_init -* * - from the parent process and also inside a container -* * - Where init has defined a custom handler for USR1 -* * - Should call the handler and -* * - Verify whether the signal handler is called from the proper process. -* * -* * Description: -* * Create PID namespace container. -* * Container init defines the handler for SIGUSR1 and waits indefinetly. -* * Parent sends SIGUSR1 to container init. -* * The signal handler is handled and the cont-init resumes normally. -* * From the container, again the signal SIGUSR1 is sent. -* * In the sig-handler check if it's invoked from correct pid(parent/container) -* * If cont-init wakes up properly - -* * it will return expected value at exit which is verified at the end. -* * -* * History: -* * DATE NAME DESCRIPTION -* * 04/11/08 Veerendra C <vechandr@in.ibm.com> Verifying cont init kill -USR1 -* -*******************************************************************************/ -#include "config.h" + * Copyright (c) International Business Machines Corp., 2007 + * 04/11/08 Veerendra C <vechandr@in.ibm.com> + * Copyright (C) 2023 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com> + */ + +/*\ + * [Description] + * + * Clone a process with CLONE_NEWPID flag and verifies that siginfo->si_pid is + * set to 0 if sender (parent process) sent the signal. Then send signal from + * container itself and check if siginfo->si_pid is set to 1. + */ #define _GNU_SOURCE 1 -#include <stdio.h> -#include <stdlib.h> -#include <sys/wait.h> -#include <sys/types.h> #include <signal.h> -#include <unistd.h> -#include "pidns_helper.h" -#include "test.h" - -#define CHILD_PID 1 -#define PARENT_PID 0 +#include "tst_test.h" +#include "lapi/sched.h" -char *TCID = "pidns16"; -int TST_TOTAL = 3; +static volatile int signal_pid; -void child_signal_handler(int sig, siginfo_t * si, void *unused) +static void child_signal_handler(LTP_ATTRIBUTE_UNUSED int sig, siginfo_t *si, LTP_ATTRIBUTE_UNUSED void *unused) { - static int c = 1; - pid_t expected_pid; - - /* Verifying from which process the signal handler is signalled */ - - switch (c) { - case 1: - expected_pid = PARENT_PID; - break; - case 2: - expected_pid = CHILD_PID; - break; - default: - tst_resm(TBROK, "child should NOT be signalled 3+ times"); - return; - } - - if (si->si_pid == expected_pid) - tst_resm(TPASS, "child is signalled from expected pid %d", - expected_pid); - else - tst_resm(TFAIL, "child is signalled from unexpected pid %d," - " expecting pid %d", si->si_pid, expected_pid); - - c++; + signal_pid = si->si_pid; } -/* - * child_fn() - Inside container - */ -int child_fn(void *ttype) +static void child_func(void) { struct sigaction sa; - pid_t pid, ppid; + pid_t cpid, ppid; - /* Set process id and parent pid */ - pid = getpid(); + cpid = tst_getpid(); ppid = getppid(); - if ((pid != CHILD_PID) || (ppid != PARENT_PID)) - tst_resm(TBROK, "pidns is not created."); + TST_EXP_EQ_LI(cpid, 1); + TST_EXP_EQ_LI(ppid, 0); + + tst_res(TINFO, "Catching SIGUSR1 signal"); - /* Set signal handler for SIGUSR1, also mask other signals */ sa.sa_flags = SA_SIGINFO; - sigemptyset(&sa.sa_mask); + SAFE_SIGFILLSET(&sa.sa_mask); sa.sa_sigaction = child_signal_handler; - if (sigaction(SIGUSR1, &sa, NULL) == -1) - tst_resm(TBROK, "%d: sigaction() failed", pid); - - pause(); - tst_resm(TINFO, "Container: Resumed after receiving SIGUSR1 " - "from parentNS "); - if (kill(pid, SIGUSR1) != 0) { - tst_resm(TFAIL, "kill(SIGUSR1) fails."); - } - tst_resm(TINFO, "Container: Resumed after sending SIGUSR1 " - "from container itself"); - _exit(10); -} + SAFE_SIGACTION(SIGUSR1, &sa, NULL); -static void setup(void) -{ - tst_require_root(); - check_newpid(); + TST_CHECKPOINT_WAKE_AND_WAIT(0); + + TST_EXP_EQ_LI(signal_pid, 0); + + tst_res(TINFO, "Sending SIGUSR1 from container itself"); + + SAFE_KILL(cpid, SIGUSR1); + + TST_EXP_EQ_LI(signal_pid, 1); } -/*********************************************************************** -* M A I N -***********************************************************************/ -int main() +static void run(void) { - int status; - pid_t cpid; - - setup(); + const struct tst_clone_args args = { + .flags = CLONE_NEWPID, + .exit_signal = SIGCHLD, + }; + pid_t pid; - cpid = ltp_clone_quick(CLONE_NEWPID | SIGCHLD, child_fn, NULL); + signal_pid = -1; - if (cpid < 0) { - tst_resm(TBROK, "clone() failed."); + pid = SAFE_CLONE(&args); + if (!pid) { + child_func(); + return; } - sleep(1); - if (kill(cpid, SIGUSR1) != 0) { - tst_resm(TFAIL, "kill(SIGUSR1) fails."); - } - sleep(1); - if (waitpid(cpid, &status, 0) < 0) - tst_resm(TWARN, "waitpid() failed."); - - if ((WIFEXITED(status)) && (WEXITSTATUS(status) == 10)) - tst_resm(TPASS, "container init continued successfuly, " - "after handling signal -USR1"); - else - tst_resm(TFAIL, "c-init failed to continue after " - "passing kill -USR1"); - tst_exit(); + TST_CHECKPOINT_WAIT(0); + + tst_res(TINFO, "Sending SIGUSR1 from parent"); + + SAFE_KILL(pid, SIGUSR1); + + TST_CHECKPOINT_WAKE(0); } + +static struct tst_test test = { + .test_all = run, + .needs_root = 1, + .needs_checkpoints = 1, + .forks_child = 1, +}; |