Re: [PATCH v2] Add preadv and pwritev system calls.

Pavel Machek
2008-12-15T15:47:22Z

On Fri 2008-12-12 20:56:00, Gerd Hoffmann wrote:
> Russell King wrote:
> >> should be similar to pread/pwrite, e.g:
> >>
> >> int preadv(fd, iovec, iovec_size, offset)
> >
> > Yes, and that's easy for glibc to achieve.
>
> This hints the ABI problem exists at syscall level only. Is that
> correct? So we can have
>
> preadv(fd, vec, vlen, off)
>
> argument ordering at app <-> glibc level and
>
> preadv(fd, vec, off, vlen)
>
> ordering at glibc <-> kernel (aka syscall) level and it works fine for
> ARM + MIPS + PARISC?

ltrace and strace would show different values; very misleading :-(.

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