Unix Programming - Re: how to set the socket parameters when the socket is created so that its file descr

Author

Re: how to set the socket parameters when the socket is created so that its file descr

Barry Margolin

2007-02-28, 1:22 am

In article <54kfrfF218mukU6@mid.individual.net>,
Ian Collins <ian-news@hotmail.com> wrote:

> sunny wrote:

There's no way to prevent sockets, or any other file descriptors, from
being inherited by forked processes. When you fork, the new process is
an exact duplicate of the parent, except for the PID and the return
value of the fork() system call.

If the child doesn't need to use the socket, it should close it after
fork() returns.
[vbcol=seagreen]
> Google for FD_CLOEXEC

That closes sockets only if the forked process calls exec().

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
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