[OpenIndiana-discuss] a problem about the core dump

[DengEncore]

Hello everyone,

 I met a strange problem about the core dump in openindiana.

 The setting of ulimit like below:
root@openindiana:~# ulimit -c
unlimited


but, my program, sometimes crashes but no core dump in the program directory.

And I have done some testing, like read write a NULL point, and the core dump 
was generated normally.

My program was just doing some socket jobs, and have a few threads.

My question is, if there is any special bugs that when the program crashes and 
no core dump will be generated?
Or there should be any special setting I was missing?


Thx.


.



--
Best Rgds,
Encore Deng
Mobile: (86) 134 161 259 40
BizCONLine Limited
Member company of Incu-Tech Programme, HKSTP
Tel: 3483 2050
Unit 222A, 2/F,Enterprise Place (Bldg 9),
No. 5 Science Park West Avenue,
Hong Kong Science Park, Shatin, N.T.



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[OpenIndiana-discuss] linux disk filter

[DengEncore]

Hi all,

I am writing a linux kernel module to filter the disk IO.
And I am facing the problems below:


1.   When the system start, how can I set my module be loaded before the 
file system?

If the file system is loaded first, maybe some disk IO will be out of filter 
before my module loaded.


2.   When the system shutdown, how can I set my module be unloaded after 
the system?

The same, I need to make sure there will be no disk IO after my module unloaded.


3.   For the system running, the filter data will be transferred from the 
module to the user application.

When the system shutdown, and the application was close.

Then, how can I save my filter data and I can load this data after the machine 
reboot?



Please comment, thx.


--
Best Rgds,
Encore Deng
Mobile: (86) 134 161 259 40
BizCONLine Limited
Member company of Incu-Tech Programme, HKSTP
Tel: 3483 2050
Unit 222A, 2/F,Enterprise Place (Bldg 9),
No. 5 Science Park West Avenue,
Hong Kong Science Park, Shatin, N.T.

佛山公司地址:南海区瀚天科技城8号楼15层I105
佛山公司电话:0757-86989295



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