[LTP] [PATCH v3 2/7] Refactor mqns_01 using new LTP API

[Richard Palethorpe]

Hello,

Richard Palethorpe <rpalethorpe@suse.de> writes:

> Hello,
>
> Andrea Cervesato <andrea.cervesato@suse.com> writes:
>
>> Hi!
>>
>> On 8/11/22 11:53, Richard Palethorpe wrote:
>>> Hello,
>>>
>>> Andrea Cervesato via ltp <ltp@lists.linux.it> writes:
>>>
>>>> Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
>>>> ---
>>>>   runtest/containers                         |   3 +-
>>>>   testcases/kernel/containers/mqns/common.h  | 101 +++++++++++
>>>>   testcases/kernel/containers/mqns/mqns_01.c | 193 +++++++--------------
>>>>   3 files changed, 166 insertions(+), 131 deletions(-)
>>>>   create mode 100644 testcases/kernel/containers/mqns/common.h
>>>>
>>>> diff --git a/runtest/containers b/runtest/containers
>>>> index 2637b62fe..863a964ad 100644
>>>> --- a/runtest/containers
>>>> +++ b/runtest/containers
>>>> @@ -16,7 +16,8 @@ pidns31 pidns31
>>>>   pidns32 pidns32
>>>>     mqns_01 mqns_01
>>>> -mqns_01_clone mqns_01 -clone
>>>> +mqns_01_clone mqns_01 -m clone
>>>> +mqns_01_unshare mqns_01 -m unshare
>>>>   mqns_02 mqns_02
>>>>   mqns_02_clone mqns_02 -clone
>>>>   mqns_03 mqns_03
>>>> diff --git a/testcases/kernel/containers/mqns/common.h b/testcases/kernel/containers/mqns/common.h
>>>> new file mode 100644
>>>> index 000000000..92a77b566
>>>> --- /dev/null
>>>> +++ b/testcases/kernel/containers/mqns/common.h
>>>> @@ -0,0 +1,101 @@
>>>> +// SPDX-License-Identifier: GPL-2.0-or-later
>>>> +/*
>>>> + * Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
>>>> + */
>>>> +
>>>> +#ifndef MQNS_H
>>>> +#define MQNS_H
>>>> +
>>>> +#include <stdlib.h>
>>>> +#include "lapi/namespaces_constants.h"
>>>> +#include "tst_test.h"
>>>> +#include "tst_safe_posix_ipc.h"
>>>> +
>>>> +enum {
>>>> +	T_CLONE,
>>>> +	T_UNSHARE,
>>>> +	T_NONE,
>>>> +};
>>>> +
>>>> +static int dummy_child1(void *v)
>>>> +{
>>>> +	(void)v;
>>>> +	return 0;
>>>> +}
>>>> +
>>>> +static inline void check_newipc(void)
>>>> +{
>>>> +	int pid, status;
>>>> +
>>>> +	pid = ltp_clone_quick(CLONE_NEWIPC | SIGCHLD, dummy_child1,
>>>>   NULL);
>>> ltp_clone_quick is still part of the old API and only uses clone2. I
>>> think it should be replaced with tst_clone. This may require extending
>>> tst_clone. In fact we probably need a test variant to switch between the
>>> clone2 and clone3 syscalls when using tst_clone.
>>>
>>> I'll leave it to you whether you want to try that and rebase this patch
>>> set on it.
>>>
>> I see ltp_clone_quick as wrapper of ltp_clone, since it's using
>> ltp_alloc_stack without calling it explicitly all the times before
>> ltp_clone.
>
> ltp_clone is also part of the old API. At some point we should remove
> that.

I'm marking this as changes requested. tst_clone should be made to
support this scenario.

-- 
Thank you,
Richard.