Re: different processes using same file object

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On Tue, Sep 29, 2009 at 02:20:00PM +0530, krushnaal pai wrote:
> i have 2 completely different processes A and B (they do not have any
> relationship)
> 
> suppose A opens a file with file descriptor 4 and
> B opens another file with file descriptor 5
> 
> can process A use the fd 5 (i.e using the file object of processs B) by any
> means..

You can pass file descriptions using unix sockets. Check "man 7 unix"
for instructions.

> if suppose i let the fd 4 of process A to point to the file object of
> process B(fd 5)
> 
> will it work?

No. They will not share the file descriptor (offsets, flags, mode etc.
will not be shared).


-- 
Luciano Rocha <luciano@xxxxxxxxxxx>
Eurotux Informática, S.A. <http://www.eurotux.com/>

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