This patch implements a basic test for cloning pid namespace. It
verifies that the newly created child process has pid == 1 and ppid == 0.
<Signed-off By>: Rishikesh K Rajak <[EMAIL PROTECTED]>
---
Index: ltp-full-20071130/testcases/kernel/containers/pidns/pidns01.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ ltp-full-20071130/testcases/kernel/containers/pidns/pidns01.c 2007-12-27 16:28:09.000000000 +0530
@@ -0,0 +1,162 @@
+/*
+* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*
+***************************************************************************
+
+* File: pidns01.c
+*
+* Description:
+* The pidns01.c testcase builds into the ltp framework to verify
+* the basic functionality of PID Namespace.
+*
+* Verify that:
+* 1. When parent clone a process with flag CLONE_NEWPID, the process ID of
+* child should be always one.
+*
+* 2. When parent clone a process with flag CLONE_NEWPID, the parent process ID of
+* should be always zero.
+*
+* Total Tests: 6 assertions
+*
+* Test Name: pidns01
+*
+* Test Assertion & Strategy:
+*
+* From main() clone a new child process with passing the clone_flag as CLONE_NEWPID,
+* Inside the cloned pid check for the getpid() and getppid()
+* Verify with global macro defined value for parent pid & child pid.
+*
+* Usage: <for command-line>
+* pidns01
+*
+* History:
+*
+* FLAG DATE NAME DESCRIPTION
+* 27/12/07 RISHIKESH K RAJAK <[EMAIL PROTECTED]> Created this test
+*
+*******************************************************************************************/
+#define _GNU_SOURCE 1
+#include <sys/wait.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#ifndef NO_LTP
+#include <usctest.h>
+#include <test.h>
+#include <libclone.h>
+#else
+#include "../../../../include/usctest.h"
+#include "../libclone/libclone.h"
+#endif
+
+char *TCID = "pid_namespace1";
+int TST_TOTAL=1;
+
+void cleanup(void);
+
+#ifdef NO_LTP
+#define TFAIL "FAILURE: "
+#define TPASS "PASS: "
+#define TINFO "INFO: "
+#define TWARN "WARN: "
+#define tst_resm(x, format, arg...) printf("%s:" format, x, ## arg)
+#define tst_exit() exit(1)
+#endif
+
+#define CHILD_PID 1
+#define PARENT_PID 0
+
+
+/*
+ * child_fn1() - Inside container
+ */
+int child_fn1(void *ttype)
+{
+ pid_t cpid, ppid;
+ cpid = getpid();
+ ppid = getppid();
+
+ tst_resm(TINFO, "PIDNS test is running inside container\n");
+ if(( cpid == CHILD_PID) &&
+ ( ppid == PARENT_PID ) )
+ {
+ tst_resm(TPASS, "Success:" );
+ }
+ else
+ {
+ tst_resm(TFAIL, "FAIL: Got unexpected result of"
+ " cpid=%d ppid=%d\n", cpid, ppid);
+ }
+ tst_exit();
+}
+
+/***********************************************************************
+* M A I N
+***********************************************************************/
+
+int main(int argc, char *argv[])
+{
+ int ret, status;
+
+ ret = do_clone_unshare_test(T_CLONE,
+ CLONE_NEWPID, child_fn1, NULL);
+
+ /* check return code */
+ if (ret == -1) {
+ tst_resm(TFAIL, "clone() Failed, errno = %d :"
+ " %s", ret, strerror(ret));
+ /* Cleanup & continue with next test case */
+ cleanup();
+ }
+
+ /* Wait for child to finish */
+ if ((wait(&status)) < 0) {
+ tst_resm(TWARN, "wait() failed, skipping this"
+ " test case");
+ /* Cleanup & continue with next test case */
+ cleanup();
+ }
+
+ if (WTERMSIG(status)) {
+ tst_resm(TWARN, "child exited with signal %d",
+ WTERMSIG(status));
+ }
+
+ /* cleanup and exit */
+ cleanup();
+
+ /*NOTREACHED*/
+ return 0;
+
+} /* End main */
+
+/*
+ * cleanup() - performs all ONE TIME cleanup for this test at
+ * completion or premature exit.
+ */
+void
+cleanup()
+{
+
+#ifndef NO_LTP
+ /* Clean the test testcase as LTP wants*/
+ TEST_CLEANUP;
+#endif
+
+ /* exit with return code appropriate for results */
+ tst_exit();
+}
Index: ltp-full-20071130/testcases/kernel/containers/pidns/runpidnstest.sh
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ ltp-full-20071130/testcases/kernel/containers/pidns/runpidnstest.sh 2007-12-27 16:27:39.000000000 +0530
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+exit_code=0
+pidns01
+if [ $? -ne 0 ]; then
+ exit_code="$?"
+fi
+exit $exit_code
Index: ltp-full-20071130/testcases/kernel/containers/pidns/Makefile
===================================================================
--- ltp-full-20071130.orig/testcases/kernel/containers/pidns/Makefile 2007-12-27 16:26:18.000000000 +0530
+++ ltp-full-20071130/testcases/kernel/containers/pidns/Makefile 2007-12-27 16:27:39.000000000 +0530
@@ -3,7 +3,7 @@
LDLIBS += -L../../../../lib -L../libclone ../libclone/libclone.a -lltp
SRCS = $(wildcard *.c)
-NOLTPSRCS =
+NOLTPSRCS = pidns01.c
TARGETS = $(patsubst %.c,%,$(SRCS))
NOLTP_TARGETS = $(patsubst %.c,%_noltp,$(NOLTPSRCS))
@@ -18,4 +18,7 @@
rm -f $(TARGETS) *.o $(NOLTP_TARGETS)
install:
- @set -e; for i in $(TARGETS) check_pidns_enabled; do ln -f $$i ../../../bin/$$i; done
+ @set -e; for i in $(TARGETS) runpidnstest.sh check_pidns_enabled; do ln -f $$i ../../../bin/$$i ; chmod +x runpidnstest.sh ; done
+
+noltp_check: noltp
+ ./runtests_noltp.sh
Index: ltp-full-20071130/testcases/kernel/containers/container_test.sh
===================================================================
--- ltp-full-20071130.orig/testcases/kernel/containers/container_test.sh 2007-12-27 16:26:18.000000000 +0530
+++ ltp-full-20071130/testcases/kernel/containers/container_test.sh 2007-12-27 16:27:39.000000000 +0530
@@ -57,6 +57,7 @@
check_pidns_enabled
if [ $? -eq 0 ]; then
echo "Running pidns tests."
+ runpidnstest.sh
else
echo "pid namespaces not enabled in kernel. Not running pidns tests."
fi
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