nbd: Detect servers that send unexpected error values

Add some debugging to flag servers that are not compliant to
the NBD protocol.  This would have flagged the server bug
fixed in commit c0301fcc.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alex Bligh <alex@alex.org.uk>

Message-Id: <1463006384-7734-11-git-send-email-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eric Blake 2016-05-11 16:39:43 -06:00 committed by Paolo Bonzini
parent f57e2416aa
commit f3c32fce36

View file

@ -33,8 +33,10 @@ static int nbd_errno_to_system_errno(int err)
return ENOMEM;
case NBD_ENOSPC:
return ENOSPC;
case NBD_EINVAL:
default:
TRACE("Squashing unexpected error %d to EINVAL", err);
/* fallthrough */
case NBD_EINVAL:
return EINVAL;
}
}