Re: [PATCH] -o intr mount option prevents core dumps on 2.4 kernel

[Steve Dickson <SteveD@redhat.com>]

Trond Myklebust wrote:

>ty den 11.01.2005 Klokka 14:36 (-0500) skreiv Steve Dickson:
>
>  
>
>>>Firstly, how is "cl_intr" preventing core dumps? Normally, we should be
>>>masking all signals except SIGKILL, SIGINT and SIGQUIT. I can see that
>>>masking SIGINT and SIGQUIT might be useful here, but not SIGKILL...
>>> 
>>>
>>>      
>>>
>>Because __rpc_execute() notices that signalled() is set and aborts the 
>>write by
>>returning -ERESTARTSYS makes the core dumping code stop dumping.
>>    
>>
>
>Err... That's what the sigmask is for. signalled() only looks at those
>signals that are enabled by the sigmask.
>  
>
hmm... I'll admit kernel signal process is not an area I've ventured 
into much so
correct me if I'm wrong.... But if SIGKILL is masked off, would that stop
the process from getting the signal and in turn stop the core dropping 
as well???

steved.




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