1//===- FuzzerIO.h - Internal header for IO utils ----------------*- C++ -* ===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// IO interface. 9//===----------------------------------------------------------------------===// 10 11#ifndef LLVM_FUZZER_IO_H 12#define LLVM_FUZZER_IO_H 13 14#include "FuzzerDefs.h" 15 16namespace fuzzer { 17 18long GetEpoch(const std::string &Path); 19 20Unit FileToVector(const std::string &Path, size_t MaxSize = 0, 21 bool ExitOnError = true); 22 23std::string FileToString(const std::string &Path); 24 25void CopyFileToErr(const std::string &Path); 26 27void WriteToFile(const uint8_t *Data, size_t Size, const std::string &Path); 28// Write Data.c_str() to the file without terminating null character. 29void WriteToFile(const std::string &Data, const std::string &Path); 30void WriteToFile(const Unit &U, const std::string &Path); 31 32void ReadDirToVectorOfUnits(const char *Path, Vector<Unit> *V, 33 long *Epoch, size_t MaxSize, bool ExitOnError); 34 35// Returns "Dir/FileName" or equivalent for the current OS. 36std::string DirPlusFile(const std::string &DirPath, 37 const std::string &FileName); 38 39// Returns the name of the dir, similar to the 'dirname' utility. 40std::string DirName(const std::string &FileName); 41 42// Returns path to a TmpDir. 43std::string TmpDir(); 44 45std::string TempPath(const char *Extension); 46 47bool IsInterestingCoverageFile(const std::string &FileName); 48 49void DupAndCloseStderr(); 50 51void CloseStdout(); 52 53void Printf(const char *Fmt, ...); 54void VPrintf(bool Verbose, const char *Fmt, ...); 55 56// Print using raw syscalls, useful when printing at early init stages. 57void RawPrint(const char *Str); 58 59// Platform specific functions: 60bool IsFile(const std::string &Path); 61size_t FileSize(const std::string &Path); 62 63void ListFilesInDirRecursive(const std::string &Dir, long *Epoch, 64 Vector<std::string> *V, bool TopDir); 65 66void RmDirRecursive(const std::string &Dir); 67 68// Iterate files and dirs inside Dir, recursively. 69// Call DirPreCallback/DirPostCallback on dirs before/after 70// calling FileCallback on files. 71void IterateDirRecursive(const std::string &Dir, 72 void (*DirPreCallback)(const std::string &Dir), 73 void (*DirPostCallback)(const std::string &Dir), 74 void (*FileCallback)(const std::string &Dir)); 75 76struct SizedFile { 77 std::string File; 78 size_t Size; 79 bool operator<(const SizedFile &B) const { return Size < B.Size; } 80}; 81 82void GetSizedFilesFromDir(const std::string &Dir, Vector<SizedFile> *V); 83 84char GetSeparator(); 85// Similar to the basename utility: returns the file name w/o the dir prefix. 86std::string Basename(const std::string &Path); 87 88FILE* OpenFile(int Fd, const char *Mode); 89 90int CloseFile(int Fd); 91 92int DuplicateFile(int Fd); 93 94void RemoveFile(const std::string &Path); 95void RenameFile(const std::string &OldPath, const std::string &NewPath); 96 97intptr_t GetHandleFromFd(int fd); 98 99void MkDir(const std::string &Path); 100void RmDir(const std::string &Path); 101 102const std::string &getDevNull(); 103 104} // namespace fuzzer 105 106#endif // LLVM_FUZZER_IO_H 107