Re: [PATCHv5 4/5] Allow setting O_NONBLOCK flag for new sockets

[Eric Dumazet <dada1@cosmosbay.com>]

Ulrich Drepper a écrit :
> This patch adds support for setting the O_NONBLOCK flag of the file
> descriptors returned by socket, socketpair, and accept.
> 

Thanks Ulrich for this v5 series. I have two more questions.

1) Can the fd passing with recvmsg() on AF_UNIX also gets O_CLOEXEC support ?

    (In my understanding, only accept(), socket(), socketcall(), socketpair()) 
are handled, so it might work on i386 (because recvmsg() is multiplexed under 
socketcall), but not on x86_64.

2) Why this O_NONBLOCK ability is needed for sockets ? Is it a security issue, 
and if yes could you remind it to me ?

Thanks