This series adds the --backing-chain option for enumerating the backing file chain. Given the topmost image it will print qemu-img info information for each image file in the chain.
Special care needs to be taken when image files form an infinite loop. This is very unusual, most like due to malicious image files. Nevertheless, qemu-img must be robust against invalid inputs so we explicit check for this. Stefan Hajnoczi (3): qemu-img: Add --backing-chain option to info command qemu-img: Detect backing file chain infinite loops qemu-iotests: Add 041 backing file chain infinite loop test qemu-img.c | 115 ++++++++++++++++++++++++++++++++++--------- tests/qemu-iotests/041 | 90 +++++++++++++++++++++++++++++++++ tests/qemu-iotests/041.out | 81 ++++++++++++++++++++++++++++++ tests/qemu-iotests/common.rc | 9 ++++ tests/qemu-iotests/group | 1 + 5 files changed, 274 insertions(+), 22 deletions(-) create mode 100755 tests/qemu-iotests/041 create mode 100644 tests/qemu-iotests/041.out -- 1.7.11.7