1 //===- FuzzerIOPosix.cpp - IO utils for Posix. ----------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
9 // IO functions implementation using Posix API.
10 //===----------------------------------------------------------------------===//
11 #include "FuzzerDefs.h"
14 #include "FuzzerExtFunctions.h"
23 #include <sys/types.h>
28 bool IsFile(const std::string &Path) {
30 if (stat(Path.c_str(), &St))
32 return S_ISREG(St.st_mode);
35 void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
36 std::vector<std::string> *V, bool TopDir) {
37 auto E = GetEpoch(Dir);
39 if (E && *Epoch >= E) return;
41 DIR *D = opendir(Dir.c_str());
43 Printf("No such directory: %s; exiting\n", Dir.c_str());
46 while (auto E = readdir(D)) {
47 std::string Path = DirPlusFile(Dir, E->d_name);
48 if (E->d_type == DT_REG || E->d_type == DT_LNK)
50 else if (E->d_type == DT_DIR && *E->d_name != '.')
51 ListFilesInDirRecursive(Path, Epoch, V, false);
62 FILE* OpenFile(int Fd, const char* Mode) {
63 return fdopen(Fd, Mode);
66 int CloseFile(int fd) {
70 int DuplicateFile(int Fd) {
74 void RemoveFile(const std::string &Path) {
78 void DiscardOutput(int Fd) {
79 FILE* Temp = fopen("/dev/null", "w");
82 dup2(fileno(Temp), Fd);
86 intptr_t GetHandleFromFd(int fd) {
87 return static_cast<intptr_t>(fd);
90 std::string DirName(const std::string &FileName) {
91 char *Tmp = new char[FileName.size() + 1];
92 memcpy(Tmp, FileName.c_str(), FileName.size() + 1);
93 std::string Res = dirname(Tmp);
98 std::string TmpDir() {
99 if (auto Env = getenv("TMPDIR"))
104 bool IsInterestingCoverageFile(const std::string &FileName) {
105 if (FileName.find("compiler-rt/lib/") != std::string::npos)
106 return false; // sanitizer internal.
107 if (FileName.find("/usr/lib/") != std::string::npos)
109 if (FileName.find("/usr/include/") != std::string::npos)
111 if (FileName == "<null>")
117 void RawPrint(const char *Str) {
118 write(2, Str, strlen(Str));
121 } // namespace fuzzer
123 #endif // LIBFUZZER_POSIX