2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
147 lines
3.5 KiB
C++
147 lines
3.5 KiB
C++
//===- FuzzerIOPosix.cpp - IO utils for Posix. ----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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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std::string Basename(const std::string &Path) {
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size_t Pos = Path.rfind(GetSeparator());
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if (Pos == std::string::npos) return Path;
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assert(Pos < Path.size());
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return Path.substr(Pos + 1);
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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("%s: %s; exiting\n", strerror(errno), 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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