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* image-fuzzer: Run using python3Eduardo Habkost2019-11-052-2/+0Star
| | | | | | | | | | | | | image-fuzzer is now supposed to be ready to run using Python 3. Remove the __future__ imports and change the interpreter line to "#!/usr/bin/env python3". Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-10-ehabkost@redhat.com Message-Id: <20191016192430.25098-10-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Encode file name and file format to bytesEduardo Habkost2019-11-051-2/+2
| | | | | | | | | | | | | Callers of create_image() will pass strings as arguments, but the Image class will expect bytes objects to be provided. Encode them inside create_image(). Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-9-ehabkost@redhat.com Message-Id: <20191016192430.25098-9-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Use bytes constant for field valuesEduardo Habkost2019-11-051-2/+2
| | | | | | | | | | | | Field values are supposed to be bytes objects, not unicode strings. Change two constants that were declared as strings. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-8-ehabkost@redhat.com Message-Id: <20191016192430.25098-8-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Return bytes objects on string fuzzing functionsEduardo Habkost2019-11-051-21/+21
| | | | | | | | | | | | No caller of fuzzer functions is interested in unicode string values, so replace them with bytes sequences. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-7-ehabkost@redhat.com Message-Id: <20191016192430.25098-7-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Use %r for all fiels at Field.__repr__()Eduardo Habkost2019-11-051-2/+2
| | | | | | | | | | | | This makes the formatting code simpler, and safer if we change the type of self.value from str to bytes. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-6-ehabkost@redhat.com Message-Id: <20191016192430.25098-6-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Explicitly use integer division operatorEduardo Habkost2019-11-052-26/+26
| | | | | | | | | | | | | Most of the division expressions in image-fuzzer assume integer division. Use the // operator to keep the same behavior when we move to Python 3. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-4-ehabkost@redhat.com Message-Id: <20191016192430.25098-4-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Write bytes instead of string to image fileEduardo Habkost2019-11-051-1/+1
| | | | | | | | | | | This is necessary for Python 3 compatibility. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-3-ehabkost@redhat.com Message-Id: <20191016192430.25098-3-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Open image files in binary modeEduardo Habkost2019-11-051-1/+1
| | | | | | | | | | | | | | This probably never caused problems because on Linux there's no actual newline conversion happening, but on Python 3 the binary/text distinction is stronger and we must explicitly open the image file in binary mode. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20191016192430.25098-2-ehabkost@redhat.com Message-Id: <20191016192430.25098-2-ehabkost@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* python: futurize -f lib2to3.fixes.fix_reduceEduardo Habkost2018-06-081-0/+1
| | | | | | | | | | | | | | | | | Handle the move of reduce() to functools.reduce(). This is necessary for Python 3 compatibility. Done using: $ py=$( (g grep -l -E '^#!.*python';find -name '*.py' -printf '%P\n';) | \ sort -u | grep -v README.sh4) $ futurize -w -f lib2to3.fixes.fix_reduce $py Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180608122952.2009-7-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* python: futurize -f libfuturize.fixes.fix_absolute_importEduardo Habkost2018-06-082-2/+4
| | | | | | | | | | | | | | | | | | Make implicit relative imports explicit and add "from __future__ import absolute_import" at the top of each relevant module. This is necessary for Python 3 compatibility. Done using: $ py=$( (g grep -l -E '^#!.*python';find -name '*.py' -printf '%P\n';) | \ sort -u | grep -v README.sh4) $ futurize -w -f libfuturize.fixes.fix_absolute_import $py Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20180608122952.2009-3-ehabkost@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* layout: Add generators for refcount table and blocksMaria Kustova2014-09-221-1/+137
| | | | | | | | | | | 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>
* fuzz: Add fuzzing functions for entries of refcount table and blocksMaria Kustova2014-09-221-1/+15
| | | | | | | | Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Maria Kustova <maria.k@catit.be> Message-id: c9f4027b6f401c67e9d18f94aed29be445e81d48.1408450493.git.maria.k@catit.be Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Trivial readability and formatting improvementsMaria Kustova2014-09-221-6/+4Star
| | | | | Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Reduce number of generator functions in __init__Maria Kustova2014-08-151-161/+143Star
| | | | | | | | | | | 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>
* image-fuzzer: Add generators of L1/L2 tablesMaria Kustova2014-08-151-65/+190
| | | | | | | | | 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>
* image-fuzzer: Add fuzzing functions for L1/L2 table entriesMaria Kustova2014-08-151-0/+28
| | | | | Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Public API for image-fuzzer/runner/runner.pyMaria Kustova2014-08-151-0/+1
| | | | | | | | __init__.py provides the public API required by the test runner Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* image-fuzzer: Generator of fuzzed qcow2 imagesMaria Kustova2014-08-151-0/+369
| | | | | | | | | | | 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>
* image-fuzzer: Fuzzing functions for qcow2 imagesMaria Kustova2014-08-151-0/+327
The fuzz submodule of the qcow2 image generator contains fuzzing functions for image fields. Each fuzzing function contains a list of constraints and a call of a helper function that randomly selects a fuzzed value satisfied to one of constraints. For now constraints include only known as invalid or potentially dangerous values. But after investigation of code coverage by fuzz tests they will be expanded by heuristic values based on inner checks and flows of a program under test. Now fuzzing of a header, header extensions and a backing file name is supported. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Maria Kustova <maria.k@catit.be> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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