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luks: Turn another invalid assertion into check
authorKevin Wolf <kwolf@redhat.com>
Tue, 20 Mar 2018 15:38:51 +0000 (16:38 +0100)
committerKevin Wolf <kwolf@redhat.com>
Mon, 26 Mar 2018 10:17:40 +0000 (12:17 +0200)
commit120bc742c028419c25ed7aa49497b490ce96536c
tree04b2ccfa53370afc5e94e6e64df9b60d9d21bccatree | snapshot
parent633c175f8cccf647f19cf8954dc46b82ce7926e4commit | diff
luks: Turn another invalid assertion into check

Commit e39e959e fixed an invalid assertion in the .bdrv_length
implementation, but left a similar assertion in place for
.bdrv_truncate. Instead of crashing when the user requests a too large
image size, fail gracefully.

A file size of exactly INT64_MAX caused failure before, but is actually
legal.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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