}
void LLVMAddDataFlowSanitizerPass(LLVMPassManagerRef PM,
- const char *ABIListFile) {
- unwrap(PM)->add(createDataFlowSanitizerPass(ABIListFile));
+ int ABIListFilesNum,
+ const char **ABIListFiles) {
+ std::vector<std::string> ABIListFilesVec;
+ for (int i = 0; i != ABIListFilesNum; ++i) {
+ ABIListFilesVec.push_back(ABIListFiles[i]);
+ }
+ unwrap(PM)->add(createDataFlowSanitizerPass(ABIListFilesVec));
}
void LLVMAddAddressSanitizerModulePass(LLVMPassManagerRef PM);
void LLVMAddThreadSanitizerPass(LLVMPassManagerRef PM);
void LLVMAddMemorySanitizerPass(LLVMPassManagerRef PM);
-void LLVMAddDataFlowSanitizerPass(LLVMPassManagerRef PM,
- const char *ABIListFile);
+void LLVMAddDataFlowSanitizerPass(LLVMPassManagerRef PM, int ABIListFilesNum,
+ const char **ABIListFiles);
#ifdef __cplusplus
}
C.LLVMAddMemorySanitizerPass(pm.C)
}
-func (pm PassManager) AddDataFlowSanitizerPass(abilist string) {
- cabilist := C.CString(abilist)
- defer C.free(unsafe.Pointer(cabilist))
- C.LLVMAddDataFlowSanitizerPass(pm.C, cabilist)
+func (pm PassManager) AddDataFlowSanitizerPass(abilist []string) {
+ abiliststrs := make([]*C.char, len(abilist))
+ for i, arg := range abilist {
+ abiliststrs[i] = C.CString(arg)
+ defer C.free(unsafe.Pointer(abiliststrs[i]))
+ }
+ C.LLVMAddDataFlowSanitizerPass(pm.C, C.int(len(abilist)), &abiliststrs[0])
}
#define LLVM_SUPPORT_SPECIALCASELIST_H
#include "llvm/ADT/StringMap.h"
+#include <string>
+#include <vector>
namespace llvm {
class MemoryBuffer;
class SpecialCaseList {
public:
- /// Parses the special case list from a file. If Path is empty, returns
- /// an empty special case list. On failure, returns 0 and writes an error
- /// message to string.
- static std::unique_ptr<SpecialCaseList> create(StringRef Path,
- std::string &Error);
+ /// Parses the special case list entries from files. On failure, returns
+ /// 0 and writes an error message to string.
+ static std::unique_ptr<SpecialCaseList>
+ create(const std::vector<std::string> &Paths, std::string &Error);
/// Parses the special case list from a memory buffer. On failure, returns
/// 0 and writes an error message to string.
static std::unique_ptr<SpecialCaseList> create(const MemoryBuffer *MB,
- std::string &Error);
- /// Parses the special case list from a file. On failure, reports a fatal
- /// error.
- static std::unique_ptr<SpecialCaseList> createOrDie(StringRef Path);
+ std::string &Error);
+ /// Parses the special case list entries from files. On failure, reports a
+ /// fatal error.
+ static std::unique_ptr<SpecialCaseList>
+ createOrDie(const std::vector<std::string> &Paths);
~SpecialCaseList();
SpecialCaseList &operator=(SpecialCaseList const &) LLVM_DELETED_FUNCTION;
struct Entry;
- StringMap<StringMap<Entry> > Entries;
+ StringMap<StringMap<Entry>> Entries;
+ StringMap<StringMap<std::string>> Regexps;
+ bool IsCompiled;
SpecialCaseList();
/// Parses just-constructed SpecialCaseList entries from a memory buffer.
bool parse(const MemoryBuffer *MB, std::string &Error);
+ /// compile() should be called once, after parsing all the memory buffers.
+ void compile();
};
} // namespace llvm
FunctionPass *createThreadSanitizerPass();
// Insert DataFlowSanitizer (dynamic data flow analysis) instrumentation
-ModulePass *createDataFlowSanitizerPass(StringRef ABIListFile = StringRef(),
- void *(*getArgTLS)() = nullptr,
- void *(*getRetValTLS)() = nullptr);
+ModulePass *createDataFlowSanitizerPass(
+ const std::vector<std::string> &ABIListFiles = std::vector<std::string>(),
+ void *(*getArgTLS)() = nullptr, void *(*getRetValTLS)() = nullptr);
// Insert SanitizerCoverage instrumentation.
ModulePass *createSanitizerCoverageModulePass(int CoverageLevel);
#if defined(__GNUC__) && defined(__linux__) && !defined(ANDROID)
-inline ModulePass *createDataFlowSanitizerPassForJIT(StringRef ABIListFile =
- StringRef()) {
- return createDataFlowSanitizerPass(ABIListFile, getDFSanArgTLSPtrForJIT,
+inline ModulePass *createDataFlowSanitizerPassForJIT(
+ const std::vector<std::string> &ABIListFiles = std::vector<std::string>()) {
+ return createDataFlowSanitizerPass(ABIListFiles, getDFSanArgTLSPtrForJIT,
getDFSanRetValTLSPtrForJIT);
}
#endif
}
};
-SpecialCaseList::SpecialCaseList() : Entries() {}
+SpecialCaseList::SpecialCaseList() : Entries(), Regexps(), IsCompiled(false) {}
-std::unique_ptr<SpecialCaseList> SpecialCaseList::create(StringRef Path,
- std::string &Error) {
- if (Path.empty())
- return std::unique_ptr<SpecialCaseList>(new SpecialCaseList());
- ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
- MemoryBuffer::getFile(Path);
- if (std::error_code EC = FileOrErr.getError()) {
- Error = (Twine("Can't open file '") + Path + "': " + EC.message()).str();
- return nullptr;
+std::unique_ptr<SpecialCaseList>
+SpecialCaseList::create(const std::vector<std::string> &Paths,
+ std::string &Error) {
+ std::unique_ptr<SpecialCaseList> SCL(new SpecialCaseList());
+ for (auto Path : Paths) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
+ MemoryBuffer::getFile(Path);
+ if (std::error_code EC = FileOrErr.getError()) {
+ Error = (Twine("can't open file '") + Path + "': " + EC.message()).str();
+ return nullptr;
+ }
+ std::string ParseError;
+ if (!SCL->parse(FileOrErr.get().get(), ParseError)) {
+ Error = (Twine("error parsing file '") + Path + "': " + ParseError).str();
+ return nullptr;
+ }
}
- return create(FileOrErr.get().get(), Error);
+ SCL->compile();
+ return SCL;
}
std::unique_ptr<SpecialCaseList> SpecialCaseList::create(const MemoryBuffer *MB,
std::unique_ptr<SpecialCaseList> SCL(new SpecialCaseList());
if (!SCL->parse(MB, Error))
return nullptr;
+ SCL->compile();
return SCL;
}
-std::unique_ptr<SpecialCaseList> SpecialCaseList::createOrDie(StringRef Path) {
+std::unique_ptr<SpecialCaseList>
+SpecialCaseList::createOrDie(const std::vector<std::string> &Paths) {
std::string Error;
- if (auto SCL = create(Path, Error))
+ if (auto SCL = create(Paths, Error))
return SCL;
report_fatal_error(Error);
}
// Iterate through each line in the blacklist file.
SmallVector<StringRef, 16> Lines;
SplitString(MB->getBuffer(), Lines, "\n\r");
- StringMap<StringMap<std::string> > Regexps;
- assert(Entries.empty() &&
- "parse() should be called on an empty SpecialCaseList");
int LineNo = 1;
- for (SmallVectorImpl<StringRef>::iterator I = Lines.begin(), E = Lines.end();
- I != E; ++I, ++LineNo) {
+ for (auto I = Lines.begin(), E = Lines.end(); I != E; ++I, ++LineNo) {
// Ignore empty lines and lines starting with "#"
if (I->empty() || I->startswith("#"))
continue;
StringRef Prefix = SplitLine.first;
if (SplitLine.second.empty()) {
// Missing ':' in the line.
- Error = (Twine("Malformed line ") + Twine(LineNo) + ": '" +
+ Error = (Twine("malformed line ") + Twine(LineNo) + ": '" +
SplitLine.first + "'").str();
return false;
}
Regex CheckRE(Regexp);
std::string REError;
if (!CheckRE.isValid(REError)) {
- Error = (Twine("Malformed regex in line ") + Twine(LineNo) + ": '" +
+ Error = (Twine("malformed regex in line ") + Twine(LineNo) + ": '" +
SplitLine.second + "': " + REError).str();
return false;
}
Regexps[Prefix][Category] += "|";
Regexps[Prefix][Category] += "^" + Regexp + "$";
}
+ return true;
+}
+void SpecialCaseList::compile() {
+ assert(!IsCompiled && "compile() should only be called once");
// Iterate through each of the prefixes, and create Regexs for them.
- for (StringMap<StringMap<std::string> >::const_iterator I = Regexps.begin(),
- E = Regexps.end();
+ for (StringMap<StringMap<std::string>>::const_iterator I = Regexps.begin(),
+ E = Regexps.end();
I != E; ++I) {
for (StringMap<std::string>::const_iterator II = I->second.begin(),
IE = I->second.end();
Entries[I->getKey()][II->getKey()].RegEx.reset(new Regex(II->getValue()));
}
}
- return true;
+ Regexps.clear();
+ IsCompiled = true;
}
SpecialCaseList::~SpecialCaseList() {}
bool SpecialCaseList::inSection(StringRef Section, StringRef Query,
StringRef Category) const {
+ assert(IsCompiled && "SpecialCaseList::compile() was not called!");
StringMap<StringMap<Entry> >::const_iterator I = Entries.find(Section);
if (I == Entries.end()) return false;
StringMap<Entry>::const_iterator II = I->second.find(Category);
cl::desc("respect alignment requirements provided by input IR"), cl::Hidden,
cl::init(false));
-// The ABI list file controls how shadow parameters are passed. The pass treats
+// The ABI list files control how shadow parameters are passed. The pass treats
// every function labelled "uninstrumented" in the ABI list file as conforming
// to the "native" (i.e. unsanitized) ABI. Unless the ABI list contains
// additional annotations for those functions, a call to one of those functions
// will produce a warning message, as the labelling behaviour of the function is
// unknown. The other supported annotations are "functional" and "discard",
// which are described below under DataFlowSanitizer::WrapperKind.
-static cl::opt<std::string> ClABIListFile(
+static cl::list<std::string> ClABIListFiles(
"dfsan-abilist",
cl::desc("File listing native ABI functions and how the pass treats them"),
cl::Hidden);
std::unique_ptr<SpecialCaseList> SCL;
public:
- DFSanABIList(std::unique_ptr<SpecialCaseList> SCL) : SCL(std::move(SCL)) {}
+ DFSanABIList() {}
+
+ void set(std::unique_ptr<SpecialCaseList> List) { SCL = std::move(List); }
/// Returns whether either this function or its source file are listed in the
/// given category.
Constant *getOrBuildTrampolineFunction(FunctionType *FT, StringRef FName);
public:
- DataFlowSanitizer(StringRef ABIListFile = StringRef(),
- void *(*getArgTLS)() = nullptr,
- void *(*getRetValTLS)() = nullptr);
+ DataFlowSanitizer(
+ const std::vector<std::string> &ABIListFiles = std::vector<std::string>(),
+ void *(*getArgTLS)() = nullptr, void *(*getRetValTLS)() = nullptr);
static char ID;
bool doInitialization(Module &M) override;
bool runOnModule(Module &M) override;
INITIALIZE_PASS(DataFlowSanitizer, "dfsan",
"DataFlowSanitizer: dynamic data flow analysis.", false, false)
-ModulePass *llvm::createDataFlowSanitizerPass(StringRef ABIListFile,
- void *(*getArgTLS)(),
- void *(*getRetValTLS)()) {
- return new DataFlowSanitizer(ABIListFile, getArgTLS, getRetValTLS);
+ModulePass *
+llvm::createDataFlowSanitizerPass(const std::vector<std::string> &ABIListFiles,
+ void *(*getArgTLS)(),
+ void *(*getRetValTLS)()) {
+ return new DataFlowSanitizer(ABIListFiles, getArgTLS, getRetValTLS);
}
-DataFlowSanitizer::DataFlowSanitizer(StringRef ABIListFile,
- void *(*getArgTLS)(),
- void *(*getRetValTLS)())
- : ModulePass(ID), GetArgTLSPtr(getArgTLS), GetRetvalTLSPtr(getRetValTLS),
- ABIList(SpecialCaseList::createOrDie(ABIListFile.empty() ? ClABIListFile
- : ABIListFile)) {
+DataFlowSanitizer::DataFlowSanitizer(
+ const std::vector<std::string> &ABIListFiles, void *(*getArgTLS)(),
+ void *(*getRetValTLS)())
+ : ModulePass(ID), GetArgTLSPtr(getArgTLS), GetRetvalTLSPtr(getRetValTLS) {
+ std::vector<std::string> AllABIListFiles(std::move(ABIListFiles));
+ AllABIListFiles.insert(AllABIListFiles.end(), ClABIListFiles.begin(),
+ ClABIListFiles.end());
+ ABIList.set(SpecialCaseList::createOrDie(AllABIListFiles));
}
FunctionType *DataFlowSanitizer::getArgsFunctionType(FunctionType *T) {
//
//===----------------------------------------------------------------------===//
+#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SpecialCaseList.h"
#include "gtest/gtest.h"
assert(Error == "");
return SCL;
}
+
+ std::string makeSpecialCaseListFile(StringRef Contents) {
+ int FD;
+ SmallString<64> Path;
+ sys::fs::createTemporaryFile("SpecialCaseListTest", "temp", FD, Path);
+ raw_fd_ostream OF(FD, true, true);
+ OF << Contents;
+ OF.close();
+ return Path.str();
+ }
};
TEST_F(SpecialCaseListTest, Basic) {
TEST_F(SpecialCaseListTest, InvalidSpecialCaseList) {
std::string Error;
EXPECT_EQ(nullptr, makeSpecialCaseList("badline", Error));
- EXPECT_EQ("Malformed line 1: 'badline'", Error);
+ EXPECT_EQ("malformed line 1: 'badline'", Error);
EXPECT_EQ(nullptr, makeSpecialCaseList("src:bad[a-", Error));
- EXPECT_EQ("Malformed regex in line 1: 'bad[a-': invalid character range",
+ EXPECT_EQ("malformed regex in line 1: 'bad[a-': invalid character range",
Error);
EXPECT_EQ(nullptr, makeSpecialCaseList("src:a.c\n"
"fun:fun(a\n",
Error));
- EXPECT_EQ("Malformed regex in line 2: 'fun(a': parentheses not balanced",
+ EXPECT_EQ("malformed regex in line 2: 'fun(a': parentheses not balanced",
Error);
- EXPECT_EQ(nullptr, SpecialCaseList::create("unexisting", Error));
- EXPECT_EQ(0U, Error.find("Can't open file 'unexisting':"));
+ std::vector<std::string> Files(1, "unexisting");
+ EXPECT_EQ(nullptr, SpecialCaseList::create(Files, Error));
+ EXPECT_EQ(0U, Error.find("can't open file 'unexisting':"));
}
TEST_F(SpecialCaseListTest, EmptySpecialCaseList) {
EXPECT_FALSE(SCL->inSection("foo", "bar"));
}
+TEST_F(SpecialCaseListTest, MultipleBlacklists) {
+ std::vector<std::string> Files;
+ Files.push_back(makeSpecialCaseListFile("src:bar\n"
+ "src:*foo*\n"
+ "src:ban=init\n"));
+ Files.push_back(makeSpecialCaseListFile("src:baz\n"
+ "src:*fog*\n"));
+ auto SCL = SpecialCaseList::createOrDie(Files);
+ EXPECT_TRUE(SCL->inSection("src", "bar"));
+ EXPECT_TRUE(SCL->inSection("src", "baz"));
+ EXPECT_FALSE(SCL->inSection("src", "ban"));
+ EXPECT_TRUE(SCL->inSection("src", "ban", "init"));
+ EXPECT_TRUE(SCL->inSection("src", "tomfoolery"));
+ EXPECT_TRUE(SCL->inSection("src", "tomfoglery"));
}
-
+}
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