tree e6304da0d058cf822920f6e833695eaf6ca7f189
parent 46485de0cb357b57373e1ca895adedf1f3ed46ec
author Kevin Wolf <kwolf@redhat.com> 1399548909 +0200
committer Kevin Wolf <kwolf@redhat.com> 1400492209 +0200

qcow1: Stricter backing file length check

Like qcow2 since commit 6d33e8e7, error out on invalid lengths instead
of silently truncating them to 1023.

Also don't rely on bdrv_pread() catching integer overflows that make len
negative, but use unsigned variables in the first place.

Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>