upstream/mercurial-mirror Files · contrib/fuzz/revlog.cc

discovery-helper: use reflink copy if available...

discovery-helper: use reflink copy if available A reflink copy will copy the files "as usual" but keep using the same data block underneath. This is only supported by "copy on write" file system like btrfs or zfs. This will achieve similar performance that the existing hardlink clone that Mercurial performs with the same initial space saving. However, it will behave better on revlogs start being touch by strip. Instead of duplicating all data in the touched revlogs, only the block actually affected by the strip will be duplicated. This save a lot of space when building many variants of large repositories. The --reflink=always flag make sure the `cp` call fails if reflink copies are not supported. Falling back to local clone.

Augie Fackler - - Load All Authors

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      #include <Python.h>

      #include <assert.h>

      #include <stdlib.h>

      #include <unistd.h>

      #include <string>

      #include "pyutil.h"

      extern "C" {

      static PyCodeObject *code;

      extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)

      {

      	contrib::initpy(*argv[0]);

      	code = (PyCodeObject *)Py_CompileString(R"py(

      from parsers import parse_index2

      for inline in (True, False):

          try:

              index, cache = parse_index2(data, inline)

              index.slicechunktodensity(list(range(len(index))), 0.5, 262144)

              for rev in range(len(index)):

                  node = index[rev][7]

                  partial = index.shortest(node)

                  index.partialmatch(node[:partial])

          except Exception as e:

              pass

              # uncomment this print if you're editing this Python code

              # to debug failures.

              # print e

      )py",

      	                                        "fuzzer", Py_file_input);

      	return 0;

      }

      int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)

      {

      	// Don't allow fuzzer inputs larger than 60k, since we'll just bog

      	// down and not accomplish much.

      	if (Size > 60000) {

      		return 0;

      	}

      	PyObject *text =

      	    PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size);

      	PyObject *locals = PyDict_New();

      	PyDict_SetItemString(locals, "data", text);

      	PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals);

      	if (!res) {

      		PyErr_Print();

      	}

      	Py_XDECREF(res);

      	Py_DECREF(locals);

      	Py_DECREF(text);

      	return 0; // Non-zero return values are reserved for future use.

      }

      }

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				#include <Python.h>
				#include <assert.h>
				#include <stdlib.h>
				#include <unistd.h>

				#include <string>

				#include "pyutil.h"

				extern "C" {

				static PyCodeObject *code;

				extern "C" int LLVMFuzzerInitialize(int argc, char **argv)
				{
				contrib::initpy(*argv[0]);
				code = (PyCodeObject *)Py_CompileString(R"py(
				from parsers import parse_index2
				for inline in (True, False):
				try:
				index, cache = parse_index2(data, inline)
				index.slicechunktodensity(list(range(len(index))), 0.5, 262144)
				for rev in range(len(index)):
				node = index[rev][7]
				partial = index.shortest(node)
				index.partialmatch(node[:partial])
				except Exception as e:
				pass
				# uncomment this print if you're editing this Python code
				# to debug failures.
				# print e
				)py",
				"fuzzer", Py_file_input);
				return 0;
				}

				int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
				{
				// Don't allow fuzzer inputs larger than 60k, since we'll just bog
				// down and not accomplish much.
				if (Size > 60000) {
				return 0;
				}
				PyObject *text =
				PyBytes_FromStringAndSize((const char *)Data, (Py_ssize_t)Size);
				PyObject *locals = PyDict_New();
				PyDict_SetItemString(locals, "data", text);
				PyObject *res = PyEval_EvalCode(code, contrib::pyglobals(), locals);
				if (!res) {
				PyErr_Print();
				}
				Py_XDECREF(res);
				Py_DECREF(locals);
				Py_DECREF(text);
				return 0; // Non-zero return values are reserved for future use.
				}
				}