mirror of
https://github.com/intel/llvm.git
synced 2026-02-03 10:39:35 +08:00
2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
129 lines
3.6 KiB
C++
129 lines
3.6 KiB
C++
//===- FuzzerIO.cpp - IO utils. -------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// IO functions.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "FuzzerIO.h"
|
|
#include "FuzzerDefs.h"
|
|
#include "FuzzerExtFunctions.h"
|
|
#include <algorithm>
|
|
#include <cstdarg>
|
|
#include <fstream>
|
|
#include <iterator>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
namespace fuzzer {
|
|
|
|
static FILE *OutputFile = stderr;
|
|
|
|
long GetEpoch(const std::string &Path) {
|
|
struct stat St;
|
|
if (stat(Path.c_str(), &St))
|
|
return 0; // Can't stat, be conservative.
|
|
return St.st_mtime;
|
|
}
|
|
|
|
Unit FileToVector(const std::string &Path, size_t MaxSize, bool ExitOnError) {
|
|
std::ifstream T(Path, std::ios::binary);
|
|
if (ExitOnError && !T) {
|
|
Printf("No such directory: %s; exiting\n", Path.c_str());
|
|
exit(1);
|
|
}
|
|
|
|
T.seekg(0, T.end);
|
|
auto EndPos = T.tellg();
|
|
if (EndPos < 0) return {};
|
|
size_t FileLen = EndPos;
|
|
if (MaxSize)
|
|
FileLen = std::min(FileLen, MaxSize);
|
|
|
|
T.seekg(0, T.beg);
|
|
Unit Res(FileLen);
|
|
T.read(reinterpret_cast<char *>(Res.data()), FileLen);
|
|
return Res;
|
|
}
|
|
|
|
std::string FileToString(const std::string &Path) {
|
|
std::ifstream T(Path, std::ios::binary);
|
|
return std::string((std::istreambuf_iterator<char>(T)),
|
|
std::istreambuf_iterator<char>());
|
|
}
|
|
|
|
void CopyFileToErr(const std::string &Path) {
|
|
Printf("%s", FileToString(Path).c_str());
|
|
}
|
|
|
|
void WriteToFile(const Unit &U, const std::string &Path) {
|
|
// Use raw C interface because this function may be called from a sig handler.
|
|
FILE *Out = fopen(Path.c_str(), "w");
|
|
if (!Out) return;
|
|
fwrite(U.data(), sizeof(U[0]), U.size(), Out);
|
|
fclose(Out);
|
|
}
|
|
|
|
void ReadDirToVectorOfUnits(const char *Path, Vector<Unit> *V,
|
|
long *Epoch, size_t MaxSize, bool ExitOnError) {
|
|
long E = Epoch ? *Epoch : 0;
|
|
Vector<std::string> Files;
|
|
ListFilesInDirRecursive(Path, Epoch, &Files, /*TopDir*/true);
|
|
size_t NumLoaded = 0;
|
|
for (size_t i = 0; i < Files.size(); i++) {
|
|
auto &X = Files[i];
|
|
if (Epoch && GetEpoch(X) < E) continue;
|
|
NumLoaded++;
|
|
if ((NumLoaded & (NumLoaded - 1)) == 0 && NumLoaded >= 1024)
|
|
Printf("Loaded %zd/%zd files from %s\n", NumLoaded, Files.size(), Path);
|
|
auto S = FileToVector(X, MaxSize, ExitOnError);
|
|
if (!S.empty())
|
|
V->push_back(S);
|
|
}
|
|
}
|
|
|
|
|
|
void GetSizedFilesFromDir(const std::string &Dir, Vector<SizedFile> *V) {
|
|
Vector<std::string> Files;
|
|
ListFilesInDirRecursive(Dir, 0, &Files, /*TopDir*/true);
|
|
for (auto &File : Files)
|
|
if (size_t Size = FileSize(File))
|
|
V->push_back({File, Size});
|
|
}
|
|
|
|
std::string DirPlusFile(const std::string &DirPath,
|
|
const std::string &FileName) {
|
|
return DirPath + GetSeparator() + FileName;
|
|
}
|
|
|
|
void DupAndCloseStderr() {
|
|
int OutputFd = DuplicateFile(2);
|
|
if (OutputFd > 0) {
|
|
FILE *NewOutputFile = OpenFile(OutputFd, "w");
|
|
if (NewOutputFile) {
|
|
OutputFile = NewOutputFile;
|
|
if (EF->__sanitizer_set_report_fd)
|
|
EF->__sanitizer_set_report_fd(
|
|
reinterpret_cast<void *>(GetHandleFromFd(OutputFd)));
|
|
DiscardOutput(2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void CloseStdout() {
|
|
DiscardOutput(1);
|
|
}
|
|
|
|
void Printf(const char *Fmt, ...) {
|
|
va_list ap;
|
|
va_start(ap, Fmt);
|
|
vfprintf(OutputFile, Fmt, ap);
|
|
va_end(ap);
|
|
fflush(OutputFile);
|
|
}
|
|
|
|
} // namespace fuzzer
|