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 16 namespace fuzzer { 17 18 long GetEpoch(const std::string &Path); 19 20 Unit FileToVector(const std::string &Path, size_t MaxSize = 0, 21 bool ExitOnError = true); 22 23 std::string FileToString(const std::string &Path); 24 25 void CopyFileToErr(const std::string &Path); 26 27 void WriteToFile(const uint8_t *Data, size_t Size, const std::string &Path); 28 // Write Data.c_str() to the file without terminating null character. 29 void WriteToFile(const std::string &Data, const std::string &Path); 30 void WriteToFile(const Unit &U, const std::string &Path); 31 32 void 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. 36 std::string DirPlusFile(const std::string &DirPath, 37 const std::string &FileName); 38 39 // Returns the name of the dir, similar to the 'dirname' utility. 40 std::string DirName(const std::string &FileName); 41 42 // Returns path to a TmpDir. 43 std::string TmpDir(); 44 45 std::string TempPath(const char *Extension); 46 47 bool IsInterestingCoverageFile(const std::string &FileName); 48 49 void DupAndCloseStderr(); 50 51 void CloseStdout(); 52 53 void Printf(const char *Fmt, ...); 54 void VPrintf(bool Verbose, const char *Fmt, ...); 55 56 // Print using raw syscalls, useful when printing at early init stages. 57 void RawPrint(const char *Str); 58 59 // Platform specific functions: 60 bool IsFile(const std::string &Path); 61 size_t FileSize(const std::string &Path); 62 63 void ListFilesInDirRecursive(const std::string &Dir, long *Epoch, 64 Vector<std::string> *V, bool TopDir); 65 66 void 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. 71 void 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 76 struct SizedFile { 77 std::string File; 78 size_t Size; 79 bool operator<(const SizedFile &B) const { return Size < B.Size; } 80 }; 81 82 void GetSizedFilesFromDir(const std::string &Dir, Vector<SizedFile> *V); 83 84 char GetSeparator(); 85 // Similar to the basename utility: returns the file name w/o the dir prefix. 86 std::string Basename(const std::string &Path); 87 88 FILE* OpenFile(int Fd, const char *Mode); 89 90 int CloseFile(int Fd); 91 92 int DuplicateFile(int Fd); 93 94 void RemoveFile(const std::string &Path); 95 void RenameFile(const std::string &OldPath, const std::string &NewPath); 96 97 intptr_t GetHandleFromFd(int fd); 98 99 void MkDir(const std::string &Path); 100 void RmDir(const std::string &Path); 101 102 const std::string &getDevNull(); 103 104 } // namespace fuzzer 105 106 #endif // LLVM_FUZZER_IO_H 107