| /* |
| * 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: <for command-line> |
| * * pidns17 |
| * * |
| * * History: |
| * * DATE NAME DESCRIPTION |
| * * 13/11/08 Gowrishankar M Creation of this test. |
| * * <gowrishankar.m@in.ibm.com> |
| * |
| ******************************************************************************/ |
| #define _GNU_SOURCE 1 |
| #include <sys/wait.h> |
| #include <sys/types.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include "test.h" |
| #define CLEANUP cleanup |
| #include "libclone.h" |
| #include "pidns_helper.h" |
| |
| char *TCID = "pidns17"; |
| int TST_TOTAL = 1; |
| int errno; |
| |
| int child_fn(void *); |
| |
| #define CHILD_PID 1 |
| #define PARENT_PID 0 |
| |
| /* |
| * child_fn() - Inside container |
| */ |
| int child_fn(void *arg) |
| { |
| int children[10], exit_val, i, status; |
| pid_t pid, ppid; |
| |
| /* Set process id and parent pid */ |
| pid = getpid(); |
| ppid = getppid(); |
| if (pid != CHILD_PID || ppid != PARENT_PID) { |
| printf("cinit: pidns was not created\n"); |
| exit(1); |
| } |
| |
| exit_val = 0; |
| |
| /* Spawn many children */ |
| for (i = 0; i < (sizeof(children) / sizeof(children[0])); i++) { |
| switch ((children[i] = fork())) { |
| case -1: |
| perror("fork failed"); |
| exit_val = 1; |
| break; |
| case 0: |
| pause(); |
| /* XXX (garrcoop): why exit with an exit code of 2? */ |
| exit(2); |
| break; |
| default: |
| /* fork succeeded. */ |
| break; |
| } |
| } |
| /* wait for last child to get scheduled */ |
| sleep(1); |
| |
| if (kill(-1, SIGUSR1) == -1) { |
| perror("cinit: kill(-1, SIGUSR1) failed"); |
| exit_val = 1; |
| } |
| |
| for (i = 0; i < (sizeof(children) / sizeof(children[0])); 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)); |
| exit_val = 1; |
| } |
| } |
| if (exit_val == 0) |
| printf("cinit: all children have terminated.\n"); |
| |
| exit(exit_val); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| check_newpid(); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int status; |
| pid_t pid; |
| |
| setup(); |
| |
| pid = getpid(); |
| |
| /* Container creation on PID namespace */ |
| TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, child_fn, NULL)); |
| if (TEST_RETURN == -1) { |
| tst_brkm(TBROK | TERRNO, CLEANUP, "clone failed"); |
| } |
| |
| sleep(1); |
| if (wait(&status) == -1) |
| tst_resm(TFAIL, "waitpid failed"); |
| |
| if (WIFEXITED(status) && WEXITSTATUS(status) != 0) |
| tst_resm(TFAIL, "container exited abnormally"); |
| else if (WIFSIGNALED(status)) |
| tst_resm(TFAIL, |
| "container was signaled with signal = %d", |
| WTERMSIG(status)); |
| |
| CLEANUP(); |
| tst_exit(); |
| |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup() |
| { |
| } |