[LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[Jan Stancek]

[-- Attachment #1: Type: text/plain, Size: 486 bytes --]


This kernel commit restored original behavior:
commit 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8
Author: Andy Whitcroft <apw@canonical.com>
Date:   Wed Nov 2 09:44:39 2011 +0100
     readlinkat: ensure we return ENOENT for the empty pathname for
normal lookups

For kernel >= 3.2, ENOENT should be expected errno code.

Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
  testcases/kernel/syscalls/readlink/readlink03.c |    3 ++-
  1 files changed, 2 insertions(+), 1 deletions(-)



[-- Attachment #2: 0001-readlink03-fix-expected-errno-for-kernel-3.2.patch --]
[-- Type: text/x-patch, Size: 532 bytes --]

diff --git a/testcases/kernel/syscalls/readlink/readlink03.c b/testcases/kernel/syscalls/readlink/readlink03.c
index 370bf7d..85141f9 100644
--- a/testcases/kernel/syscalls/readlink/readlink03.c
+++ b/testcases/kernel/syscalls/readlink/readlink03.c
@@ -174,7 +174,8 @@ int main(int ac, char **av)
 			}
 
 			if (strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) {
-				if ((tst_kvercmp(2, 6, 39)) >= 0)
+				if (tst_kvercmp(2, 6, 39) >= 0
+					&& tst_kvercmp(3, 2, 0) < 0)
 					Test_cases[i].exp_errno = EINVAL;
 			}
 


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Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[Wanlong Gao]

Hi Jan,

> 
> This kernel commit restored original behavior:
> commit 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8
> Author: Andy Whitcroft <apw@canonical.com>
> Date:   Wed Nov 2 09:44:39 2011 +0100
>     readlinkat: ensure we return ENOENT for the empty pathname for
> normal lookups
> 
> For kernel >= 3.2, ENOENT should be expected errno code.


I had posted a patch long time ago, you can see here
http://marc.info/?l=ltp-list&m=132063831228321&w=2

This is a kernel bug, and already fixed in 3.0 and 3.1
stable tree, so, just test the kernel version like this
is not the best method.

What do you think?

Thanks,
Wanlong Gao

> 

> Signed-off-by: Jan Stancek <jstancek@redhat.com>
> ---
>  testcases/kernel/syscalls/readlink/readlink03.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> 
> 
> 
> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing 
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> 
> 
> 
> _______________________________________________
> Ltp-list mailing list
> Ltp-list@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/ltp-list



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Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[Jan Stancek]

----- Original Message -----
> From: "Wanlong Gao" <gaowanlong@cn.fujitsu.com>
> To: "Jan Stancek" <jstancek@redhat.com>
> Cc: ltp-list@lists.sourceforge.net, "Jeffrey Burke" <jburke@redhat.com>
> Sent: Wednesday, March 14, 2012 1:50:56 PM
> Subject: Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2
> 
> Hi Jan,
> 
> > 
> > This kernel commit restored original behavior:
> > commit 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8
> > Author: Andy Whitcroft <apw@canonical.com>
> > Date:   Wed Nov 2 09:44:39 2011 +0100
> >     readlinkat: ensure we return ENOENT for the empty pathname for
> > normal lookups
> > 
> > For kernel >= 3.2, ENOENT should be expected errno code.
> 
> 
> I had posted a patch long time ago, you can see here
> http://marc.info/?l=ltp-list&m=132063831228321&w=2
> 
> This is a kernel bug, and already fixed in 3.0 and 3.1
> stable tree, so, just test the kernel version like this
> is not the best method.
> 
> What do you think?

Agreed, version check doesn't make much sense.

I think if this patch was important enough to be backported to stable
trees, we can be sure it's a bug and we can drop that version
check entirely - which is what your patch does.

Regards,
Jan


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Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[Wanlong Gao]

On 03/14/2012 09:57 PM, Jan Stancek wrote:

> 
> 
> ----- Original Message -----
>> From: "Wanlong Gao" <gaowanlong@cn.fujitsu.com>
>> To: "Jan Stancek" <jstancek@redhat.com>
>> Cc: ltp-list@lists.sourceforge.net, "Jeffrey Burke" <jburke@redhat.com>
>> Sent: Wednesday, March 14, 2012 1:50:56 PM
>> Subject: Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2
>>
>> Hi Jan,
>>
>>>
>>> This kernel commit restored original behavior:
>>> commit 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8
>>> Author: Andy Whitcroft <apw@canonical.com>
>>> Date:   Wed Nov 2 09:44:39 2011 +0100
>>>     readlinkat: ensure we return ENOENT for the empty pathname for
>>> normal lookups
>>>
>>> For kernel >= 3.2, ENOENT should be expected errno code.
>>
>>
>> I had posted a patch long time ago, you can see here
>> http://marc.info/?l=ltp-list&m=132063831228321&w=2
>>
>> This is a kernel bug, and already fixed in 3.0 and 3.1
>> stable tree, so, just test the kernel version like this
>> is not the best method.
>>
>> What do you think?
> 
> Agreed, version check doesn't make much sense.
> 
> I think if this patch was important enough to be backported to stable
> trees, we can be sure it's a bug and we can drop that version
> check entirely - which is what your patch does.


Yeah, so let me resend it with your Ack.

Thanks,
Wanlong Gao

> 
> Regards,
> Jan
> 
> 



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Re: [LTP] [PATCH] readlink03: fix expected errno for kernel >=3.2

[Caspar Zhang]

On 03/14/2012 07:44 PM, Jan Stancek wrote:
> 
> This kernel commit restored original behavior:
> commit 1fa1e7f615f4d3ae436fa319af6e4eebdd4026a8
> Author: Andy Whitcroft <apw@canonical.com>
> Date:   Wed Nov 2 09:44:39 2011 +0100
>      readlinkat: ensure we return ENOENT for the empty pathname for
> normal lookups
> 
> For kernel >= 3.2, ENOENT should be expected errno code.
> 
> Signed-off-by: Jan Stancek <jstancek@redhat.com>

looks good to me.

Reviewed-by: Caspar Zhang <caspar@casparzhang.com>

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