Re: [LTP] sendto syscall fails because of the error value missmatch from 3.6-rc1 kernel onwards

[Jan Stancek <jstancek@redhat.com>]

Hi,

this looks like kernel commit, which caused it:

commit cf60af03ca4e71134206809ea892e49b92a88896
Author: Yuchung Cheng <ycheng@google.com>
Date:   Thu Jul 19 06:43:09 2012 +0000
    net-tcp: Fast Open client - sendmsg(MSG_FASTOPEN)

And it depends also on value of tcp_fastopen:
echo 1 > /proc/sys/net/ipv4/tcp_fastopen
# ./sendto01
...
sendto01    1  TFAIL  :  invalid flags set ; returned -1 (expected 0), errno 106 (expected 32)

# echo 0 > /proc/sys/net/ipv4/tcp_fastopen
# ./sendto01
...
sendto01    1  TFAIL  :  invalid flags set ; returned -1 (expected 0), errno 95 (expected 32)

Regards,
Jan

----- Original Message -----
> From: "Shyju PV" <shyju.pv@huawei.com>
> To: ltp-list@lists.sourceforge.net
> Cc: "Sanil kumar" <sanil.kumar@huawei.com>, "nagamani mantha" <nagamani.mantha@huawei.com>
> Sent: Saturday, 25 August, 2012 1:42:09 PM
> Subject: [LTP] sendto syscall fails because of the error value missmatch	from 3.6-rc1 kernel onwards
> 
> LTP_Version: 2012-06-14
> LTP Test case: sendto01
> Description : Verifies the sendto syscall errorno for various failure
> cases
> Failure Analysis : when the invalid flag is set, The error no
> EOPNOTSUPP
> (95) and syscall returns 0 .instead LTP expects EPIPE (32) and the
> syscall
> return value as -1.
> Fix : Modify  the LTP code with respect the the system return values
> of the
> latest kernel(3.6-rc1)
> Test case passed in Kernel 3.5
> Failed from  3.6-rc1,rc2and rc3
> 
> Test output :: <<<test_output>>>
> incrementing stop
> sendto01    1  TPASS  :  bad file descriptor successful
> sendto01    2  TPASS  :  invalid socket successful
> sendto01    3  TPASS  :  invalid send buffer successful
> sendto01    4  TPASS  :  connected TCP successful
> sendto01    5  TPASS  :  not connected TCP successful
> sendto01    6  TPASS  :  invalid to buffer length successful
> sendto01    7  TPASS  :  invalid to buffer successful
> sendto01    8  TPASS  :  UDP message too big successful
> sendto01    9  TPASS  :  local endpoint shutdown successful
> sendto01   10  TFAIL  :  invalid flags set ; returned -1 (expected
> 0), errno
> 95
> (expected 32)
> <<<execution_status>>>
> initiation_status="ok"
> duration=0 termination_type=exited termination_id=1 corefile=no
> cutime=0 cstime=0
> <<<test_end>>>
> INFO: ltp-pan reported some tests FAIL
> 
> Shyju
> 
> 
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