Thanks, I submitted a patch: https://lists.nongnu.org/archive/html/qemu-trivial/2017-10/msg00016.html
On Tue, Oct 3, 2017 at 12:30 PM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 3 October 2017 at 11:50, Marco Aurélio Lopes Barbosa > <malba...@gmail.com> wrote: > > if (ioctl(fd, RNDGETENTCNT, &entropy) == -1) > > > When I run this program with qemu-x86_64-static I got the error > > > > Unsupported ioctl: cmd=0xffffffff80045200 > > ioctl failed > > > I've patched qemu to forward the iocl with RNDGETENTCNT to the host and > it > > worked as expected. Can someone explain me why this does not work out of > > the box? > > For the linux-user mode code in QEMU, every ioctl has to have > code (or at least a declaration) to support it. So when new > ioctls are added to the Linux kernel, they aren't supported > in QEMU unless support is also added to QEMU. The error message > is to tell the user that their program used an ioctl that > isn't supported in QEMU. > > We don't have a lot of people maintaining the linux-user code, > so generally these are only fixed as people encounter them and > report bugs and provide us with patches. > > If you've written a patch which adds support for this new > ioctl then you could send it to us via the qemu-devel mailing > list. If you're not sure how to do that then > https://wiki.qemu.org/Contribute/SubmitAPatch > has some information on sending us patches. > > thanks > -- PMM > -- Marco A L Barbosa http://malbarbo.pro.br --
