I see. Did you try to restart from a checkpoint image and see if it works?
On Tue, Oct 28, 2014 at 1:55 AM, Ankit Garg <[email protected]> wrote:
> Hi Jiajun,
> Our software has rsh deep into our basic code infrastructure
> so it won't be easy to switch to ssh. As far as I understand this problem
> is more related to uid being set on file exe of rsh, which goes away when
> you simply copy the executable causing the problem. I commented following
> code in file src/execwrappers.cpp and now dmtcp_launch goes ahead and ran
> successfully. Is it something which can be locally fixed and not cause any
> problem in checkpoint. Rsh into another machine and running command is one
> time activity which will not stay and hence I don't think this will cause
> any problem in checkpoint functionality
>
> // FIXME: SEE COMMENTS IN dmtcp_launch.cpp, rev. 1087; AND CHANGE THIS.
> /*
> i
>
>
>
>
>
>
>
>
>
> *f (dmtcp::Util::isSetuid(path)) { if (dmtcp::Util::isScreen(path)) {
> dmtcp::Util::setScreenDir(); } // THIS NEXT LINE IS
> DANGEROUS. MOST setuid PROGRAMS CAN'T RUN UNPRIVILEGED
> dmtcp::Util::patchArgvIfSetuid(path, argv, newArgv); // BUG:
> dmtcp::Util::patchArgvIfSetuid() DOES NOT SET newArgv WHEN COPYING //
> BINARY IN CODE RE-FACTORING FROM REVISION 911. *filename =
> (*newArgv)[0]; } else */*
> {
>
> *filename = (char*)path;
> *newArgv = (char**)argv;
> }
>
>
> Regards
> Ankit
>
>
>
> On 10/28/2014 09:29 AM, Jiajun Cao wrote:
>
> Hi Ankit,
>
> Currently DMTCP doesn't support rsh. If it's possible, could you try
> ssh instead?
>
> Best,
> Jiajun
>
> On Mon, Oct 27, 2014 at 8:37 PM, Kapil Arya <[email protected]>
> wrote:
>
>> Hi Jiajun,
>>
>> Can you take a look at this error and suggest Ankit a solution?
>>
>> Kapil
>>
>> On Mon, Oct 27, 2014 at 3:25 AM, Ankit Garg <[email protected]>
>> wrote:
>>
>>> Hi,
>>> I am getting issue when code internally does rsh into another
>>> machine and try to execute some command on it when ran via dmtcp_launch.
>>> I am attaching the test with the logs and screen logs. On analyses it
>>> seems that dmtcp_launch copies rsh executable somewhere and then try to
>>> execute that which results in following error.
>>>
>>> *rcmd: socket: Permission denied*
>>>
>>>
>>> I am stuck with this as our code does similar to above test. Let me
>>> know where I am wrong in this.
>>>
>>>
>>> Regards
>>> Ankit
>>>
>>>
>>>
>>>
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>>
>
>
>
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