Eric Blake
f57e2416aa
The kernel ioctl() interface into NBD is limited to 'unsigned long'; we MUST pass in input with that type (and not int or size_t, as there may be platform ABIs where the wrong types promote incorrectly through var-args). Furthermore, on 32-bit platforms, the kernel is limited to a maximum export size of 2T (our BLKSIZE of 512 times a SIZE_BLOCKS constrained by 32 bit unsigned long). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1463006384-7734-8-git-send-email-eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>