Commit e0606dae authored by Osama Muhammad's avatar Osama Muhammad Committed by Shuah Khan
Browse files

selftests: prctl: Add new prctl test for PR_SET_NAME 



This patch will add the new test, which covers the prctl call
PR_SET_NAME command. The test tries to give a name using the PR_SET_NAME
call and then confirm it that it changed correctly by using  PR_GET_NAME.
It also tries to rename it with empty name.In the test PR_GET_NAME is
tested by passing null pointer to it and check its behaviour.

Signed-off-by: default avatarOsama Muhammad <osmtendev@gmail.com>
Reviewed-by: default avatarMuhammad Usama Anjum <usama.anjum@collabora.com>
Tested-by: default avatarMuhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent 6eaae198

tools/testing/selftests/prctl/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/) 


ifeq ($(ARCH),x86)

TEST_PROGS := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test \

		disable-tsc-test set-anon-vma-name-test

		disable-tsc-test set-anon-vma-name-test set-process-name

all: $(TEST_PROGS)



include ../lib.mk

tools/testing/selftests/prctl/set-process-name.c

0 → 100644
+62 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * This test covers the PR_SET_NAME functionality of prctl calls

 */



#include <errno.h>

#include <sys/prctl.h>

#include <string.h>



#include "../kselftest_harness.h"



#define CHANGE_NAME "changename"

#define EMPTY_NAME ""

#define TASK_COMM_LEN 16



int set_name(char *name)

{

	int res;



	res = prctl(PR_SET_NAME, name, NULL, NULL, NULL);



	if (res < 0)

		return -errno;

	return res;

}



int check_is_name_correct(char *check_name)

{

	char name[TASK_COMM_LEN];

	int res;



	res = prctl(PR_GET_NAME, name, NULL, NULL, NULL);



	if (res < 0)

		return -errno;



	return !strcmp(name, check_name);

}



int check_null_pointer(char *check_name)

{

	char *name = NULL;

	int res;



	res = prctl(PR_GET_NAME, name, NULL, NULL, NULL);



	return res;

}



TEST(rename_process) {



	EXPECT_GE(set_name(CHANGE_NAME), 0);

	EXPECT_TRUE(check_is_name_correct(CHANGE_NAME));



	EXPECT_GE(set_name(EMPTY_NAME), 0);

	EXPECT_TRUE(check_is_name_correct(EMPTY_NAME));



	EXPECT_GE(set_name(CHANGE_NAME), 0);

	EXPECT_LT(check_null_pointer(CHANGE_NAME), 0);

}



TEST_HARNESS_MAIN