134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2008
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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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* Description:
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* Testcase tries killing of the parent namespace pid by the container-init.
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* It also tries killing of non-existent PID, by the container-init.
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* Returns Success if Unable to kill, and proper error number is set.
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* else Returns Failure
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*
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* Steps:
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* 1. Parent process clone a process with flag CLONE_NEWPID
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* 2. The pid of the parent namespace is passed to the container.
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* 3. Container receieves the PID and passes SIGKILL to this PID.
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* 4. If kill() is unsuccessful and the errno is set to 'No Such process'
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* then sets PASS
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* else,
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* sets FAIL
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* 5. It also verifies by passing SIGKILL to FAKE_PID
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* 6. If kill() is unsuccessful and the errno is set to 'No Such process'
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* then sets PASS
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* else,
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* sets FAIL
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*
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*******************************************************************************/
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <assert.h>
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#include <unistd.h>
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#include <errno.h>
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#include <signal.h>
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#include "pidns_helper.h"
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#include "test.h"
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#define CINIT_PID 1
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#define PARENT_PID 0
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#define FAKE_PID -1
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char *TCID = "pidns06";
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int TST_TOTAL = 1;
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/*
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* kill_pid_in_childfun()
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* Cont-init tries to kill the parent-process using parent's global Pid.
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* Also checks passing SIGKILL to non existent PID in the container.
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*/
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static int kill_pid_in_childfun(void *vtest)
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{
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int cpid, ppid, *par_pid;
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int ret = 0;
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cpid = getpid();
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ppid = getppid();
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par_pid = (int *)vtest;
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/* Checking the values to make sure pidns is created correctly */
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if (cpid != CINIT_PID || ppid != PARENT_PID) {
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printf("Unexpected result for Container: init "
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"pid=%d ppid=%d\n", cpid, ppid);
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exit(1);
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}
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/*
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* While trying kill() of the pid of the parent namespace..
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* Check to see if the errno was set to the expected, value of 3 : ESRCH
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*/
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ret = kill(*par_pid, SIGKILL);
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if (ret == -1 && errno == ESRCH) {
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printf("Container: killing parent pid=%d failed as expected "
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"with ESRCH\n", *par_pid);
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} else {
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printf("Container: killing parent pid=%d, didn't fail as "
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"expected with ESRCH (%d) and a return value of -1. Got "
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"%d (\"%s\") and a return value of %d instead.\n",
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*par_pid, ESRCH, errno, strerror(errno), ret);
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exit(1);
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}
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/*
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* While killing non-existent pid in the container,
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* Check to see if the errno was set to the expected, value of 3 : ESRCH
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*/
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ret = kill(FAKE_PID, SIGKILL);
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if (ret == -1 && errno == ESRCH) {
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printf("Container: killing non-existent pid failed as expected "
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"with ESRCH\n");
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} else {
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printf("Container: killing non-existent pid, didn't fail as "
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"expected with ESRCH (%d) and a return value of -1. Got "
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"%d (\"%s\") and a return value of %d instead.\n",
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ESRCH, errno, strerror(errno), ret);
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exit(1);
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}
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exit(0);
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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(void)
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{
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int status;
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setup();
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pid_t pid = getpid();
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tst_resm(TINFO, "Parent: Passing the pid of the process %d", pid);
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TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, kill_pid_in_childfun,
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(void *)&pid));
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if (TEST_RETURN == -1) {
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tst_brkm(TFAIL | TTERRNO, NULL, "clone failed");
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} else if (wait(&status) == -1) {
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tst_brkm(TFAIL | TERRNO, NULL, "wait failed");
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}
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tst_exit();
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}
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