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119 lines
3.1 KiB
119 lines
3.1 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: pidns01.c
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*
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* Description:
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* The pidns01.c testcase builds into the ltp framework to verify
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* the basic functionality of PID Namespace.
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*
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* Verify that:
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* 1. When parent clone a process with flag CLONE_NEWPID, the process ID of
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* child should be always one.
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*
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* 2. When parent clone a process with flag CLONE_NEWPID, the parent process ID of
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* should be always zero.
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*
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* Total Tests:
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*
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* Test Name: pidns01
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*
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* Test Assertion & Strategy:
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*
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* From main() clone a new child process with passing the clone_flag as CLONE_NEWPID,
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* Inside the cloned pid check for the getpid() and getppid()
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* Verify with global macro defined value for parent pid & child pid.
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*
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* Usage: <for command-line>
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* pidns01
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*
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* History:
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*
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* FLAG DATE NAME DESCRIPTION
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* 27/12/07 RISHIKESH K RAJAK <risrajak@in.ibm.com> Created this test
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*
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*******************************************************************************************/
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#define _GNU_SOURCE
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#include <sys/wait.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.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 = "pidns01";
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int TST_TOTAL = 1;
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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_fn1() - Inside container
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*/
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int child_fn1(void *ttype LTP_ATTRIBUTE_UNUSED)
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{
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int exit_val;
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pid_t cpid, ppid;
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cpid = getpid();
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ppid = getppid();
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tst_resm(TINFO, "PIDNS test is running inside container");
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if (cpid == CHILD_PID && ppid == PARENT_PID) {
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printf("Got expected cpid and ppid\n");
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exit_val = 0;
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} else {
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printf("Got unexpected result of cpid=%d ppid=%d\n",
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cpid, ppid);
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exit_val = 1;
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}
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return 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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tst_parse_opts(argc, argv, NULL, NULL);
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setup();
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TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, child_fn1, NULL));
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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(TWARN | TERRNO, NULL, "wait failed");
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}
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if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
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tst_resm(TFAIL, "child exited abnormally");
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else if (WIFSIGNALED(status)) {
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tst_resm(TFAIL, "child was killed with signal = %d",
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WTERMSIG(status));
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}
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tst_exit();
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}
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