From a40f1c2add4d5f58d594f810fe36cabcf32bc4b0 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Fri, 30 Aug 2013 14:34:25 +0200 Subject: qcow2: Metadata overlap checks Two new functions are added; the first one checks a given range in the image file for overlaps with metadata (main header, L1 tables, L2 tables, refcount table and blocks). The second one should be used immediately before writing to the image file as it calls the first function and, upon collision, marks the image as corrupt and makes the BDS unusable, thereby preventing further access. Both functions take a bitmask argument specifying the structures which should be checked for overlaps, making it possible to also check metadata writes against colliding with other structures. Signed-off-by: Max Reitz Signed-off-by: Kevin Wolf --- monitor.c | 1 + 1 file changed, 1 insertion(+) (limited to 'monitor.c') diff --git a/monitor.c b/monitor.c index ee9744cfb6..2c542e1bca 100644 --- a/monitor.c +++ b/monitor.c @@ -504,6 +504,7 @@ static const char *monitor_event_names[] = { [QEVENT_BALLOON_CHANGE] = "BALLOON_CHANGE", [QEVENT_SPICE_MIGRATE_COMPLETED] = "SPICE_MIGRATE_COMPLETED", [QEVENT_GUEST_PANICKED] = "GUEST_PANICKED", + [QEVENT_BLOCK_IMAGE_CORRUPTED] = "BLOCK_IMAGE_CORRUPTED", }; QEMU_BUILD_BUG_ON(ARRAY_SIZE(monitor_event_names) != QEVENT_MAX) -- cgit v1.2.3