hooking disk accesses

Hi!

I have to develop an application that will hook disk access requests to the
operating system. It includes a request to a remote disk. Sínce I am a real
beginner on Linux environment programming, I'd to ask you some clue on how
start it.

Thanks.

sraposo wrote:
> Hi!
>
> I have to develop an application that will hook disk access requests
to the
> operating system. It includes a request to a remote disk. Sínce I am
a real
> beginner on Linux environment programming, I'd to ask you some clue
on how
> start it.
>
> Thanks.

FAM - File Alteration Monitor. Worth looking into? Comes with most
(all?) newer distros.

http://oss.sgi.com/projects/fam/faq.html
http://www.php.net/manual/en/ref.fam.php

hth,
prg

prg spilled the following:

>
> sraposo wrote:
>> Hi!
>>
>> I have to develop an application that will hook disk access requests
> to the
>> operating system. It includes a request to a remote disk. Sínce I am
> a real
>> beginner on Linux environment programming, I'd to ask you some clue
> on how
>> start it.
>>
>> Thanks.
>
> FAM - File Alteration Monitor. Worth looking into? Comes with most
> (all?) newer distros.
>
> http://oss.sgi.com/projects/fam/faq.html
> http://www.php.net/manual/en/ref.fam.php


there's also a thingy that does something along these lines - I came across
it when reading up on ClamAV...(quick google)....http://www.dazuko.org/

HTH

C.

> I have to develop an application that will hook disk access requests
> to the operating system. It includes a request to a remote disk. Sínce
> I am a real beginner on Linux environment programming, I'd to ask you
> some clue on how start it.

There is a nice technique you can use but it's rather advanced. You might
want to search google for "hooking syscall". This isn't specific to disks
but rather, one can hook the system's read() and write() system calls.

That will let you see disk I/O however it might be a messy way to
accomplish what you want.

--
Jem Berkes
Software design for Windows and Linux/Unix-like systems
http://www.sysdesign.ca/

sraposo wrote:

> Hi!
>
> I have to develop an application that will hook disk access requests to
> the operating system. It includes a request to a remote disk. Sínce I am a
> real beginner on Linux environment programming, I'd to ask you some clue
> on how start it.
>
There is dazuko, famuko (famd) and libtrash. You don't need to reinvent the
wheel :)
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