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path: root/tests/image-fuzzer/qcow2/layout.py
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2014-09-22layout: Add generators for refcount table and blocksMaria Kustova
Refcount structures are placed in clusters randomly selected from all unallocated host clusters. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Maria Kustova <maria.k@catit.be> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 7e2f38608db6fba2da53997390b19400d445c45d.1408450493.git.maria.k@catit.be Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15image-fuzzer: Reduce number of generator functions in __init__Maria Kustova
Some issues can be found only when a fuzzed image has a partial structure, e.g. has L1/L2 tables but no refcount ones. Generation of an entirely defined image limits these cases. Now the Image constructor creates only a header and a backing file name (if any), other image elements are generated in the 'create_image' API. Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15image-fuzzer: Add generators of L1/L2 tablesMaria Kustova
Entries in L1/L2 entries are based on a portion of random guest clusters. L2 entries contain offsets to host image clusters filled with random data. Clusters for L1/L2 tables and guest data are selected randomly. Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15image-fuzzer: Generator of fuzzed qcow2 imagesMaria Kustova
The layout submodule of the qcow2 package creates a random valid image, randomly selects some amount of its fields, fuzzes them and write the fuzzed image to the file. Fuzzing process can be controlled by an external configuration. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>