/* * Copyright (c) International Business Machines Corp., 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 ************************************************************************* * Description: * Testcase tries killing of the parent namespace pid by the container-init. * It also tries killing of non-existent PID, by the container-init. * Returns Success if Unable to kill, and proper error number is set. * else Returns Failure * * Steps: * 1. Parent process clone a process with flag CLONE_NEWPID * 2. The pid of the parent namespace is passed to the container. * 3. Container receieves the PID and passes SIGKILL to this PID. * 4. If kill() is unsuccessful and the errno is set to 'No Such process' * then sets PASS * else, * sets FAIL * 5. It also verifies by passing SIGKILL to FAKE_PID * 6. If kill() is unsuccessful and the errno is set to 'No Such process' * then sets PASS * else, * sets FAIL * *******************************************************************************/ #define _GNU_SOURCE 1 #include <stdio.h> #include <stdlib.h> #include <sys/wait.h> #include <assert.h> #include <unistd.h> #include <errno.h> #include <signal.h> #include "pidns_helper.h" #include "test.h" #define CINIT_PID 1 #define PARENT_PID 0 #define FAKE_PID -1 char *TCID = "pidns06"; int TST_TOTAL = 1; /* * kill_pid_in_childfun() * Cont-init tries to kill the parent-process using parent's global Pid. * Also checks passing SIGKILL to non existent PID in the container. */ static int kill_pid_in_childfun(void *vtest) { int cpid, ppid, *par_pid; int ret = 0; cpid = getpid(); ppid = getppid(); par_pid = (int *)vtest; /* Checking the values to make sure pidns is created correctly */ if (cpid != CINIT_PID || ppid != PARENT_PID) { printf("Unexpected result for Container: init " "pid=%d ppid=%d\n", cpid, ppid); exit(1); } /* * While trying kill() of the pid of the parent namespace.. * Check to see if the errno was set to the expected, value of 3 : ESRCH */ ret = kill(*par_pid, SIGKILL); if (ret == -1 && errno == ESRCH) { printf("Container: killing parent pid=%d failed as expected " "with ESRCH\n", *par_pid); } else { printf("Container: killing parent pid=%d, didn't fail as " "expected with ESRCH (%d) and a return value of -1. Got " "%d (\"%s\") and a return value of %d instead.\n", *par_pid, ESRCH, errno, strerror(errno), ret); exit(1); } /* * While killing non-existent pid in the container, * Check to see if the errno was set to the expected, value of 3 : ESRCH */ ret = kill(FAKE_PID, SIGKILL); if (ret == -1 && errno == ESRCH) { printf("Container: killing non-existent pid failed as expected " "with ESRCH\n"); } else { printf("Container: killing non-existent pid, didn't fail as " "expected with ESRCH (%d) and a return value of -1. Got " "%d (\"%s\") and a return value of %d instead.\n", ESRCH, errno, strerror(errno), ret); exit(1); } exit(0); } static void setup(void) { tst_require_root(); check_newpid(); } int main(void) { int status; setup(); pid_t pid = getpid(); tst_resm(TINFO, "Parent: Passing the pid of the process %d", pid); TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, kill_pid_in_childfun, (void *)&pid)); if (TEST_RETURN == -1) { tst_brkm(TFAIL | TERRNO, NULL, "clone failed"); } else if (wait(&status) == -1) { tst_brkm(TFAIL | TERRNO, NULL, "wait failed"); } tst_exit(); }