9p/xen: check logical size for buffer size

trans_xen did not check the data fits into the buffer before copying
from the xen ring, but we probably should.
Add a check that just skips the request and return an error to
userspace if it did not fit

Tested-by: Stefano Stabellini <[email protected]>
Reviewed-by: Christian Schoenebeck <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Dominique Martinet <[email protected]>

0 files changed, 0 insertions, 0 deletions