pidns02.c revision ed991ae835a3a59fe7c3f08c076b8805be79148d
1/* 2* Copyright (c) International Business Machines Corp., 2007 3* This program is free software; you can redistribute it and/or modify 4* it under the terms of the GNU General Public License as published by 5* the Free Software Foundation; either version 2 of the License, or 6* (at your option) any later version. 7* This program is distributed in the hope that it will be useful, 8* but WITHOUT ANY WARRANTY; without even the implied warranty of 9* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 10* the GNU General Public License for more details. 11* You should have received a copy of the GNU General Public License 12* along with this program; if not, write to the Free Software 13* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 14* 15*************************************************************************** 16 17* File: pidns02.c 18* 19* Description: 20* The pidns02.c testcase builds into the ltp framework to verify 21* the basic functionality of PID Namespace. 22* 23* Verify that: 24* 1. When parent clone a process with flag CLONE_NEWPID, the session ID of 25* child should be always one. 26* 27* 2. When parent clone a process with flag CLONE_NEWPID, the parent process group ID 28* should be always one. 29* 30* Total Tests 31* 32* Test Name: pidns02 33* 34* Test Assertion & Strategy: 35* 36* From main() clone a new child process with passing the clone_flag as CLONE_NEWPID, 37* Call the setid() inside container. 38* Inside the cloned pid check for the getsid(0) and getpgid(0) 39* Verify with global macro defined value for parent pid & child pid. 40* 41* Usage: <for command-line> 42* pidns02 43*/ 44 45#define _GNU_SOURCE 46#include <sys/wait.h> 47#include <assert.h> 48#include <stdio.h> 49#include <stdlib.h> 50#include <unistd.h> 51#include <string.h> 52#include <errno.h> 53#include "usctest.h" 54#include "test.h" 55#define CLEANUP cleanup 56#include "libclone.h" 57#include "pidns_helper.h" 58 59char *TCID = "pid_namespace2"; 60int TST_TOTAL = 1; 61 62#define PGID 1 63#define SID 1 64 65/* 66 * child_fn1() - Inside container 67 */ 68int child_fn1(void *vtest) 69{ 70 pid_t pgid, sid; 71 72 setsid(); 73 74 pgid = getpgid(0); 75 sid = getsid(0); 76 77 printf("Checking session id & group id inside container\n"); 78 if (pgid == PGID && sid == SID) { 79 printf("Success: Got Group ID = %d & Session ID = %d\n", 80 pgid, sid); 81 exit(0); 82 } else { 83 printf("Got unexpected result of Group ID = %d & Session ID = " 84 "%d\n", pgid, sid); 85 exit(1); 86 } 87} 88 89static void setup(void) 90{ 91 tst_require_root(NULL); 92 check_newpid(); 93} 94 95int main(int argc, char *argv[]) 96{ 97 int status; 98 99 setup(); 100 101 TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWPID, child_fn1, NULL)); 102 if (TEST_RETURN == -1) { 103 tst_brkm(TFAIL | TTERRNO, CLEANUP, "clone failed"); 104 } else if ((wait(&status)) == -1) { 105 tst_brkm(TFAIL | TERRNO, CLEANUP, "wait failed"); 106 } 107 108 if (WIFEXITED(status) && WEXITSTATUS(status) != 0) { 109 tst_resm(TFAIL | TERRNO, "child exited abnormally"); 110 } else if (WIFSIGNALED(status)) { 111 tst_resm(TFAIL | TERRNO, "child exited with signal %d", 112 WTERMSIG(status)); 113 } 114 115 CLEANUP(); 116 tst_exit(); 117 118} 119 120/* 121 * CLEANUP() - performs all ONE TIME CLEANUP for this test at 122 * completion or premature exit. 123 */ 124void cleanup() 125{ 126 /* Clean the test testcase as LTP wants */ 127 TEST_CLEANUP; 128} 129