On Fri, 31 Mar 2006, Hua Zhong wrote:
>
> If I understand correctly:
>
> splice is one fd in, one fd out
Yes, and one of the fd's have to be a pipe.
> tee is one fd in, two fd out (and I'd assume the "one fd in" would always be
> a pipe)
Actually, all three of them would have to be pipes. The tee() thing has to
push to both sources in a "synchronized" manner, so it can't just take
arbitrary file descriptors that it doesn't know the exact buffering rules
for.
(Otherwise you wouldn't need "tee()" at all - you could have a "splice()"
that just takes several output fd's).
> How about one fd in, N fd out? Do you then stack the tee calls using
> temporary pipes?
I didn't write the tee() logic, but making it 1:N instead of 1:2 is not
conceptually a problem at all. The exact system call interface might limit
it some way, of course.
Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
