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fork opens sth?

Hi,

I noticed that after forking a child, an open() returns 4 as the file 
descriptor where I suppose it to be 3, because the parent does not open 
any file/pipe or anything before fork. Am I missing sth here? It is not 
mentioned anywhere that fork() opens anything.

What I found, as a workaround is close(3). But, I don't know this will 
be the right thing to do.
-- 
Muzaffer Ozakca
Researcher/Software Engineer  -  muzaffer.ozakca@bilten.metu.edu.tr
TUBITAK-Bilten-ODTU - Communication Systems and Comp. Networks Group
ODTU, Ankara, Turkey
http://www.bilten.metu.edu.tr/   tel: +90-312-210 1311

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Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
IRC Channel:   irc.openprojects.net / #kernelnewbies
Web Page:      http://www.kernelnewbies.org/