copyfiles: deal with existing file when hardlinking
If the hardlinking fails, we fallback to `shutil.copy`, but do not consider
future hardlinking doomed.
This is a slight improvement from the current situation, we still avoid
hardliking in a case we might be able to do it. However this does not have an
impact of the rest of the operation.
(This is an opportunity improvement while looking at something next to that.)
Differential Revision: https://phab.mercurial-scm.org/D10841
CC ?= clang
CXX ?= clang++
# By default, use our own standalone_fuzz_target_runner.
# This runner does no fuzzing, but simply executes the inputs
# provided via parameters.
# Run e.g. "make all LIB_FUZZING_ENGINE=/path/to/libFuzzer.a"
# to link the fuzzer(s) against a real fuzzing engine.
#
# OSS-Fuzz will define its own value for LIB_FUZZING_ENGINE.
LIB_FUZZING_ENGINE ?= standalone_fuzz_target_runner.o
# Default to Python 3.
#
# Windows ships Python 3 as `python.exe`, which may not be on PATH. py.exe is.
ifeq ($(OS),Windows_NT)
PYTHON?=py -3
else
PYTHON?=python3
endif
PYTHON_CONFIG ?= $$OUT/sanpy/bin/python-config
PYTHON_CONFIG_FLAGS ?= --ldflags --embed
CXXFLAGS += -Wno-deprecated-register
all: standalone_fuzz_target_runner.o oss-fuzz
standalone_fuzz_target_runner.o: standalone_fuzz_target_runner.cc
$$OUT/%_fuzzer_seed_corpus.zip: %_corpus.py
$(PYTHON) $< $@
pyutil.o: pyutil.cc pyutil.h
$(CXX) $(CXXFLAGS) -g -O1 \
`$(PYTHON_CONFIG) --cflags` \
-I../../mercurial -c -o pyutil.o pyutil.cc
bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
$(CC) $(CFLAGS) -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c
bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial bdiff.cc \
bdiff-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
$$OUT/bdiff_fuzzer
mpatch.o: ../../mercurial/mpatch.c
$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c -o mpatch.o \
../../mercurial/mpatch.c
mpatch-oss-fuzz.o: ../../mercurial/mpatch.c
$(CC) $(CFLAGS) -c -o mpatch-oss-fuzz.o ../../mercurial/mpatch.c
mpatch_fuzzer: mpatch.cc mpatch-oss-fuzz.o $$OUT/mpatch_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial mpatch.cc \
mpatch-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
$$OUT/mpatch_fuzzer
fuzz-x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
$(CC) $(CFLAGS) -c \
-o $@ \
$<
xdiff_fuzzer: xdiff.cc fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o
$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial xdiff.cc \
fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o \
$(LIB_FUZZING_ENGINE) -o $$OUT/xdiff_fuzzer
parsers-%.o: ../../mercurial/cext/%.c
$(CC) -I../../mercurial `$(PYTHON_CONFIG) --cflags` $(CFLAGS) -c \
-o $@ $<
PARSERS_OBJS=parsers-manifest.o parsers-charencode.o parsers-parsers.o parsers-dirs.o parsers-pathencode.o parsers-revlog.o
dirs_fuzzer: dirs.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirs_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial dirs.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/dirs_fuzzer
fncache_fuzzer: fncache.cc
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial fncache.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/fncache_fuzzer
jsonescapeu8fast_fuzzer: jsonescapeu8fast.cc pyutil.o $(PARSERS_OBJS)
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial jsonescapeu8fast.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/jsonescapeu8fast_fuzzer
manifest_fuzzer: manifest.cc pyutil.o $(PARSERS_OBJS) $$OUT/manifest_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial manifest.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/manifest_fuzzer
revlog_fuzzer: revlog.cc pyutil.o $(PARSERS_OBJS) $$OUT/revlog_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial revlog.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/revlog_fuzzer
dirstate_fuzzer: dirstate.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirstate_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial dirstate.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/dirstate_fuzzer
fm1readmarkers_fuzzer: fm1readmarkers.cc pyutil.o $(PARSERS_OBJS) $$OUT/fm1readmarkers_fuzzer_seed_corpus.zip
$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
-Wno-register -Wno-macro-redefined \
-I../../mercurial fm1readmarkers.cc \
pyutil.o $(PARSERS_OBJS) \
$(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
-o $$OUT/fm1readmarkers_fuzzer
clean:
$(RM) *.o *_fuzzer \
bdiff \
mpatch \
xdiff
oss-fuzz: bdiff_fuzzer mpatch_fuzzer xdiff_fuzzer dirs_fuzzer fncache_fuzzer jsonescapeu8fast_fuzzer manifest_fuzzer revlog_fuzzer dirstate_fuzzer fm1readmarkers_fuzzer
.PHONY: all clean oss-fuzz