Re:[Ltib] Driver question

[hong zhang]

Mehrdad,

opening, reading and writing files from within the
kernel is usually a bad idea. Generally speaking,
trying to use any of the sys_*() functions from the
kernel itself is a bad idea.

----henry

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>    1. Driver question (Mehrdad Salami)
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----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 23 Nov 2007 11:11:30 +1100
> From: Mehrdad Salami <address@hidden>
> Subject: [Ltib] Driver question
> To: address@hidden
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
> 
> Hi List,
> 
> I am trying to open a serial driver from kernel
> space of another driver.
> Currently I am opening the serial driver from user
> space
> 
> fd=open(/dev/tts/2,...
> read(fd,...
> close(fd);
> 
> However I want to open this serial driver in another
> driver in kernel 
> space which I am developing myself. I wonder if such
> thing is possible 
> considering the security and resources for kernel
> space drivers.
> 
> If this is possible what function need to be called
> to open this serial 
> driver in kernel space.
> 
> 
> Thanks,
> 
> Mehrdad
> 
> 
> 
> 
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> End of Ltib Digest, Vol 19, Issue 12
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