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 AppendToFile(const uint8_t *Data, size_t Size, const std::string &Path); 33 void AppendToFile(const std::string &Data, const std::string &Path); 34 35 void ReadDirToVectorOfUnits(const char *Path, Vector<Unit> *V, 36 long *Epoch, size_t MaxSize, bool ExitOnError); 37 38 // Returns "Dir/FileName" or equivalent for the current OS. 39 std::string DirPlusFile(const std::string &DirPath, 40 const std::string &FileName); 41 42 // Returns the name of the dir, similar to the 'dirname' utility. 43 std::string DirName(const std::string &FileName); 44 45 // Returns path to a TmpDir. 46 std::string TmpDir(); 47 48 std::string TempPath(const char *Prefix, const char *Extension); 49 50 bool IsInterestingCoverageFile(const std::string &FileName); 51 52 void DupAndCloseStderr(); 53 54 void CloseStdout(); 55 56 void Printf(const char *Fmt, ...); 57 void VPrintf(bool Verbose, const char *Fmt, ...); 58 59 // Print using raw syscalls, useful when printing at early init stages. 60 void RawPrint(const char *Str); 61 62 // Platform specific functions: 63 bool IsFile(const std::string &Path); 64 bool IsDirectory(const std::string &Path); 65 size_t FileSize(const std::string &Path); 66 67 void ListFilesInDirRecursive(const std::string &Dir, long *Epoch, 68 Vector<std::string> *V, bool TopDir); 69 70 bool MkDirRecursive(const std::string &Dir); 71 void RmDirRecursive(const std::string &Dir); 72 73 // Iterate files and dirs inside Dir, recursively. 74 // Call DirPreCallback/DirPostCallback on dirs before/after 75 // calling FileCallback on files. 76 void IterateDirRecursive(const std::string &Dir, 77 void (*DirPreCallback)(const std::string &Dir), 78 void (*DirPostCallback)(const std::string &Dir), 79 void (*FileCallback)(const std::string &Dir)); 80 81 struct SizedFile { 82 std::string File; 83 size_t Size; 84 bool operator<(const SizedFile &B) const { return Size < B.Size; } 85 }; 86 87 void GetSizedFilesFromDir(const std::string &Dir, Vector<SizedFile> *V); 88 89 char GetSeparator(); 90 bool IsSeparator(char C); 91 // Similar to the basename utility: returns the file name w/o the dir prefix. 92 std::string Basename(const std::string &Path); 93 94 FILE* OpenFile(int Fd, const char *Mode); 95 96 int CloseFile(int Fd); 97 98 int DuplicateFile(int Fd); 99 100 void RemoveFile(const std::string &Path); 101 void RenameFile(const std::string &OldPath, const std::string &NewPath); 102 103 intptr_t GetHandleFromFd(int fd); 104 105 void MkDir(const std::string &Path); 106 void RmDir(const std::string &Path); 107 108 const std::string &getDevNull(); 109 110 } // namespace fuzzer 111 112 #endif // LLVM_FUZZER_IO_H 113