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163 lines
4.1 KiB
163 lines
4.1 KiB
/*
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* Copyright (c) International Business Machines Corp., 2007
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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***************************************************************************
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* File: pidns17.c
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* *
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* * Description:
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* * The pidns17.c testcase verifies inside the container, if kill(-1, SIGUSR1)
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* * terminates all children running inside.
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* *
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* * Test Assertion & Strategy:
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* * Create a PID namespace container.
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* * Spawn many children inside it.
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* * Invoke kill(-1, SIGUSR1) inside container and check if it terminates
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* * all children.
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* *
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* * Usage: <for command-line>
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* * pidns17
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* *
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* * History:
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* * DATE NAME DESCRIPTION
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* * 13/11/08 Gowrishankar M Creation of this test.
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* * <gowrishankar.m@in.ibm.com>
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*
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******************************************************************************/
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#define _GNU_SOURCE 1
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#include <sys/wait.h>
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#include <sys/types.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include "pidns_helper.h"
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#include "test.h"
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char *TCID = "pidns17";
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int TST_TOTAL = 1;
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int child_fn(void *);
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#define CHILD_PID 1
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#define PARENT_PID 0
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/*
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* child_fn() - Inside container
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*/
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int child_fn(void *arg)
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{
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int children[10], exit_val, i, status;
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pid_t pid, ppid;
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/* Set process id and parent pid */
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pid = getpid();
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ppid = getppid();
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if (pid != CHILD_PID || ppid != PARENT_PID) {
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printf("cinit: pidns was not created\n");
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exit(1);
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}
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exit_val = 0;
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/* Spawn many children */
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for (i = 0; i < ARRAY_SIZE(children); i++) {
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switch ((children[i] = fork())) {
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case -1:
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perror("fork failed");
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exit_val = 1;
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break;
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case 0:
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pause();
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/* XXX (garrcoop): why exit with an exit code of 2? */
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exit(2);
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break;
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default:
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/* fork succeeded. */
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break;
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}
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}
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/* wait for last child to get scheduled */
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sleep(1);
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if (kill(-1, SIGUSR1) == -1) {
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perror("cinit: kill(-1, SIGUSR1) failed");
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exit_val = 1;
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}
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for (i = 0; i < ARRAY_SIZE(children); i++) {
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if (waitpid(children[i], &status, 0) == -1) {
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perror("cinit: waitpid failed");
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kill(children[i], SIGTERM);
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waitpid(children[i], &status, 0);
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exit_val = 1;
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}
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if (!(WIFSIGNALED(status) || WTERMSIG(status) == SIGUSR1)) {
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/*
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* XXX (garrcoop): this status reporting is overly
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* noisy. Someone obviously needs to read the
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* constraints documented in wait(2) a bit more
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* closely -- in particular the relationship between
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* WIFEXITED and WEXITSTATUS, and WIFSIGNALED and
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* WTERMSIG.
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*/
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printf("cinit: found a child alive still "
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"%d exit: %d, %d, signal %d, %d", i,
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WIFEXITED(status), WEXITSTATUS(status),
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WIFSIGNALED(status), WTERMSIG(status));
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exit_val = 1;
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}
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}
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if (exit_val == 0)
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printf("cinit: all children have terminated.\n");
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exit(exit_val);
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}
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static void setup(void)
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{
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tst_require_root();
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check_newpid();
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}
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int main(int argc, char *argv[])
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{
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int status;
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pid_t pid;
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setup();
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pid = getpid();
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/* Container creation on PID namespace */
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TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, child_fn, NULL));
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if (TEST_RETURN == -1) {
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tst_brkm(TBROK | TERRNO, NULL, "clone failed");
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}
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sleep(1);
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if (wait(&status) == -1)
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tst_resm(TFAIL, "waitpid failed");
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if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
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tst_resm(TFAIL, "container exited abnormally");
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else if (WIFSIGNALED(status))
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tst_resm(TFAIL,
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"container was signaled with signal = %d",
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WTERMSIG(status));
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tst_exit();
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}
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