Re: [LTP] [PATCH V2] Add userns01 testcase to verify user namespace.

[s00318865 <sunyuan3@huawei.com>]

Hi Jan,
     Got. Thanks for your help.You are very professional.
     Best regards.
         Yuan


On 2015/5/22 22:16, Jan Stancek wrote:
>
>
>
> ----- Original Message -----
>> From: "Yuan Sun" <sunyuan3@huawei.com>
>> To: jstancek@redhat.com
>> Cc: ltp-list@lists.sourceforge.net
>> Sent: Thursday, 21 May, 2015 12:31:58 PM
>> Subject: [PATCH V2] Add userns01 testcase to verify user namespace.
>>
>> Signed-off-by: Yuan Sun <sunyuan3@huawei.com>
>> ---
>>   testcases/kernel/containers/userns01/Makefile      | 26 +++++++
>>   testcases/kernel/containers/userns01/userns01.c    | 90
>>   ++++++++++++++++++++++
>>   .../kernel/containers/userns01/userns_helper.h     | 37 +++++++++
>>   3 files changed, 153 insertions(+)
>>   create mode 100644 testcases/kernel/containers/userns01/Makefile
>>   create mode 100644 testcases/kernel/containers/userns01/userns01.c
>>   create mode 100644 testcases/kernel/containers/userns01/userns_helper.h
> I added it to .gitignore and container runtest file, slightly fixed
> commit message, made GPL license look the same in both files and pushed.
>
> Thank you,
> Jan
>
>> diff --git a/testcases/kernel/containers/userns01/Makefile
>> b/testcases/kernel/containers/userns01/Makefile
>> new file mode 100644
>> index 0000000..9f67216
>> --- /dev/null
>> +++ b/testcases/kernel/containers/userns01/Makefile
>> @@ -0,0 +1,26 @@
>> +###############################################################################
>> +#
>> ##
>> +# Copyright (c) Huawei Technologies Co., Ltd., 2015
>> ##
>> +#
>> ##
>> +# 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.
>> ##
>> +###############################################################################
>> +
>> +top_srcdir		?= ../../../..
>> +
>> +include $(top_srcdir)/include/mk/testcases.mk
>> +include $(abs_srcdir)/../Makefile.inc
>> +
>> +LDLIBS			:= -lclone -lltp
>> +
>> +include $(top_srcdir)/include/mk/generic_leaf_target.mk
>> diff --git a/testcases/kernel/containers/userns01/userns01.c
>> b/testcases/kernel/containers/userns01/userns01.c
>> new file mode 100644
>> index 0000000..c6022b5
>> --- /dev/null
>> +++ b/testcases/kernel/containers/userns01/userns01.c
>> @@ -0,0 +1,90 @@
>> +/*
>> +* Copyright (c) Huawei Technologies Co., Ltd., 2015
>> +* 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.
>> +*
>> +*
>> +* Verify that:
>> +*  If a user ID has no mapping inside the namespace, user ID and group
>> +* ID will be the value defined in the file /proc/sys/kernel/overflowuid,
>> 65534.
>> +*/
>> +
>> +#define _GNU_SOURCE
>> +#include <sys/wait.h>
>> +#include <assert.h>
>> +#include <stdio.h>
>> +#include <stdlib.h>
>> +#include <unistd.h>
>> +#include <string.h>
>> +#include <errno.h>
>> +#include "test.h"
>> +#include "libclone.h"
>> +#include "userns_helper.h"
>> +#define OVERFLOWUIDPATH "/proc/sys/kernel/overflowuid"
>> +
>> +char *TCID = "user_namespace1";
>> +int TST_TOTAL = 1;
>> +
>> +char fullpath[BUFSIZ];
>> +long overflowuid;
>> +
>> +/*
>> + * child_fn1() - Inside a new user namespace
>> + */
>> +static int child_fn1(void *arg)
>> +{
>> +	int exit_val;
>> +	int uid, gid;
>> +
>> +	uid = geteuid();
>> +	gid = getegid();
>> +
>> +	tst_resm(TINFO, "USERNS test is running in a new user namespace.");
>> +	if (uid == overflowuid && gid == overflowuid) {
>> +		printf("Got expected uid and gid\n");
>> +		exit_val = 0;
>> +	} else {
>> +		printf("Got unexpected result of uid=%d gid=%d\n", uid, gid);
>> +		exit_val = 1;
>> +	}
>> +
>> +	return exit_val;
>> +}
>> +
>> +static void setup(void)
>> +{
>> +	check_newuser();
>> +	SAFE_FILE_SCANF(NULL, OVERFLOWUIDPATH, "%ld", &overflowuid);
>> +}
>> +
>> +int main(int argc, char *argv[])
>> +{
>> +	int status;
>> +
>> +	tst_parse_opts(argc, argv, NULL, NULL);
>> +	setup();
>> +
>> +	TEST(do_clone_unshare_test(T_CLONE, CLONE_NEWUSER, child_fn1, NULL));
>> +
>> +	if (TEST_RETURN == -1)
>> +		tst_brkm(TFAIL | TTERRNO, NULL, "clone failed");
>> +	else if ((wait(&status)) == -1)
>> +		tst_brkm(TWARN | TERRNO, NULL, "wait failed");
>> +
>> +	if (WIFEXITED(status) && WEXITSTATUS(status) != 0)
>> +		tst_resm(TFAIL, "child exited abnormally");
>> +	else if (WIFSIGNALED(status)) {
>> +		tst_resm(TFAIL, "child was killed with signal = %d",
>> +			 WTERMSIG(status));
>> +	}
>> +
>> +	tst_resm(TPASS, "the uid and the gid are right inside the container");
>> +	tst_exit();
>> +}
>> +
>> diff --git a/testcases/kernel/containers/userns01/userns_helper.h
>> b/testcases/kernel/containers/userns01/userns_helper.h
>> new file mode 100644
>> index 0000000..3fb7288
>> --- /dev/null
>> +++ b/testcases/kernel/containers/userns01/userns_helper.h
>> @@ -0,0 +1,37 @@
>> +/*
>> +* Copyright (c) Huawei Technologies Co., Ltd., 2015
>> +* 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.
>> +*/
>> +
>> +#include "../libclone/libclone.h"
>> +#include "test.h"
>> +#include "safe_macros.h"
>> +
>> +static int dummy_child(void *v)
>> +{
>> +	(void) v;
>> +	return 0;
>> +}
>> +
>> +static int check_newuser(void)
>> +{
>> +	int pid, status;
>> +
>> +	if (tst_kvercmp(3, 8, 0) < 0)
>> +		tst_brkm(TCONF, NULL, "CLONE_NEWUSER not supported");
>> +
>> +	pid = do_clone_unshare_test(T_CLONE, CLONE_NEWUSER, dummy_child, NULL);
>> +	if (pid == -1)
>> +		tst_brkm(TCONF | TERRNO, NULL, "CLONE_NEWUSER not supported");
>> +	SAFE_WAIT(NULL, &status);
>> +
>> +	return 0;
>> +}
>> --
>> 1.9.1
>>
>>
> .
>


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