forked from OSchip/llvm-project
141 lines
3.2 KiB
C++
141 lines
3.2 KiB
C++
//===- FuzzerIOPosix.cpp - IO utils for Posix. ----------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// IO functions implementation using Posix API.
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//===----------------------------------------------------------------------===//
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#include "FuzzerDefs.h"
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#if LIBFUZZER_POSIX || LIBFUZZER_FUCHSIA
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#include "FuzzerExtFunctions.h"
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#include "FuzzerIO.h"
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#include <cstdarg>
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#include <cstdio>
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#include <dirent.h>
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#include <fstream>
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#include <iterator>
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#include <libgen.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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namespace fuzzer {
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bool IsFile(const std::string &Path) {
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struct stat St;
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if (stat(Path.c_str(), &St))
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return false;
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return S_ISREG(St.st_mode);
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}
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static bool IsDirectory(const std::string &Path) {
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struct stat St;
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if (stat(Path.c_str(), &St))
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return false;
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return S_ISDIR(St.st_mode);
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}
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size_t FileSize(const std::string &Path) {
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struct stat St;
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if (stat(Path.c_str(), &St))
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return 0;
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return St.st_size;
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}
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void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
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Vector<std::string> *V, bool TopDir) {
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auto E = GetEpoch(Dir);
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if (Epoch)
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if (E && *Epoch >= E) return;
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DIR *D = opendir(Dir.c_str());
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if (!D) {
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Printf("No such directory: %s; exiting\n", Dir.c_str());
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exit(1);
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}
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while (auto E = readdir(D)) {
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std::string Path = DirPlusFile(Dir, E->d_name);
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if (E->d_type == DT_REG || E->d_type == DT_LNK ||
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(E->d_type == DT_UNKNOWN && IsFile(Path)))
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V->push_back(Path);
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else if ((E->d_type == DT_DIR ||
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(E->d_type == DT_UNKNOWN && IsDirectory(Path))) &&
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*E->d_name != '.')
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ListFilesInDirRecursive(Path, Epoch, V, false);
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}
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closedir(D);
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if (Epoch && TopDir)
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*Epoch = E;
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}
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char GetSeparator() {
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return '/';
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}
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FILE* OpenFile(int Fd, const char* Mode) {
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return fdopen(Fd, Mode);
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}
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int CloseFile(int fd) {
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return close(fd);
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}
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int DuplicateFile(int Fd) {
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return dup(Fd);
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}
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void RemoveFile(const std::string &Path) {
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unlink(Path.c_str());
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}
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void DiscardOutput(int Fd) {
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FILE* Temp = fopen("/dev/null", "w");
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if (!Temp)
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return;
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dup2(fileno(Temp), Fd);
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fclose(Temp);
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}
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intptr_t GetHandleFromFd(int fd) {
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return static_cast<intptr_t>(fd);
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}
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std::string DirName(const std::string &FileName) {
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char *Tmp = new char[FileName.size() + 1];
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memcpy(Tmp, FileName.c_str(), FileName.size() + 1);
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std::string Res = dirname(Tmp);
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delete [] Tmp;
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return Res;
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}
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std::string TmpDir() {
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if (auto Env = getenv("TMPDIR"))
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return Env;
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return "/tmp";
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}
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bool IsInterestingCoverageFile(const std::string &FileName) {
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if (FileName.find("compiler-rt/lib/") != std::string::npos)
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return false; // sanitizer internal.
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if (FileName.find("/usr/lib/") != std::string::npos)
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return false;
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if (FileName.find("/usr/include/") != std::string::npos)
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return false;
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if (FileName == "<null>")
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return false;
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return true;
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}
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void RawPrint(const char *Str) {
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write(2, Str, strlen(Str));
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}
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} // namespace fuzzer
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#endif // LIBFUZZER_POSIX
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