Re: New copyfile system call - discuss before LSF?

Ric Wheeler
2013-02-22T09:53:31Z

On 02/22/2013 10:47 AM, Paolo Bonzini wrote:
> Il 21/02/2013 23:24, Zach Brown ha scritto:
>> You could make it work with some locking and out_fd seeking to set the
>> write offset before calling sendfile64()+flags, but ugh.
>>
>> ssize_t sendfile(int out_fd, int in_fd, off_t in_offset, off_t
>> out_offset, size_t count, int flags);
>>
>> That seems closer.
>>
>> We might also want to pre-emptively offer iovs instead of offsets,
>> because that's the very first thing that's going to be requested after
>> people prototype having to iterate calling sendfile() for each
>> contiguous copy region.
> Indeed, I was about to propose that exactly. So that would be
> psendfilev. I don't think psendfile is useful, and can be easily
> provided at the libc level.
>
> Paolo

This seems to be suspiciously close to a clear consensus on how to move forward
after many years of spinning our wheels. Anyone want to promote an actual patch
before we change our collective minds?

Ric