forked from OSchip/llvm-project
148 lines
3.4 KiB
C++
148 lines
3.4 KiB
C++
//===- FuzzerIOPosix.cpp - IO utils for Posix. ----------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
// IO functions implementation using Posix API.
|
|
//===----------------------------------------------------------------------===//
|
|
#include "FuzzerDefs.h"
|
|
#if LIBFUZZER_POSIX || LIBFUZZER_FUCHSIA
|
|
|
|
#include "FuzzerExtFunctions.h"
|
|
#include "FuzzerIO.h"
|
|
#include <cstdarg>
|
|
#include <cstdio>
|
|
#include <dirent.h>
|
|
#include <fstream>
|
|
#include <iterator>
|
|
#include <libgen.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
namespace fuzzer {
|
|
|
|
bool IsFile(const std::string &Path) {
|
|
struct stat St;
|
|
if (stat(Path.c_str(), &St))
|
|
return false;
|
|
return S_ISREG(St.st_mode);
|
|
}
|
|
|
|
static bool IsDirectory(const std::string &Path) {
|
|
struct stat St;
|
|
if (stat(Path.c_str(), &St))
|
|
return false;
|
|
return S_ISDIR(St.st_mode);
|
|
}
|
|
|
|
size_t FileSize(const std::string &Path) {
|
|
struct stat St;
|
|
if (stat(Path.c_str(), &St))
|
|
return 0;
|
|
return St.st_size;
|
|
}
|
|
|
|
std::string Basename(const std::string &Path) {
|
|
size_t Pos = Path.rfind(GetSeparator());
|
|
if (Pos == std::string::npos) return Path;
|
|
assert(Pos < Path.size());
|
|
return Path.substr(Pos + 1);
|
|
}
|
|
|
|
void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
|
|
Vector<std::string> *V, bool TopDir) {
|
|
auto E = GetEpoch(Dir);
|
|
if (Epoch)
|
|
if (E && *Epoch >= E) return;
|
|
|
|
DIR *D = opendir(Dir.c_str());
|
|
if (!D) {
|
|
Printf("%s: %s; exiting\n", strerror(errno), Dir.c_str());
|
|
exit(1);
|
|
}
|
|
while (auto E = readdir(D)) {
|
|
std::string Path = DirPlusFile(Dir, E->d_name);
|
|
if (E->d_type == DT_REG || E->d_type == DT_LNK ||
|
|
(E->d_type == DT_UNKNOWN && IsFile(Path)))
|
|
V->push_back(Path);
|
|
else if ((E->d_type == DT_DIR ||
|
|
(E->d_type == DT_UNKNOWN && IsDirectory(Path))) &&
|
|
*E->d_name != '.')
|
|
ListFilesInDirRecursive(Path, Epoch, V, false);
|
|
}
|
|
closedir(D);
|
|
if (Epoch && TopDir)
|
|
*Epoch = E;
|
|
}
|
|
|
|
char GetSeparator() {
|
|
return '/';
|
|
}
|
|
|
|
FILE* OpenFile(int Fd, const char* Mode) {
|
|
return fdopen(Fd, Mode);
|
|
}
|
|
|
|
int CloseFile(int fd) {
|
|
return close(fd);
|
|
}
|
|
|
|
int DuplicateFile(int Fd) {
|
|
return dup(Fd);
|
|
}
|
|
|
|
void RemoveFile(const std::string &Path) {
|
|
unlink(Path.c_str());
|
|
}
|
|
|
|
void DiscardOutput(int Fd) {
|
|
FILE* Temp = fopen("/dev/null", "w");
|
|
if (!Temp)
|
|
return;
|
|
dup2(fileno(Temp), Fd);
|
|
fclose(Temp);
|
|
}
|
|
|
|
intptr_t GetHandleFromFd(int fd) {
|
|
return static_cast<intptr_t>(fd);
|
|
}
|
|
|
|
std::string DirName(const std::string &FileName) {
|
|
char *Tmp = new char[FileName.size() + 1];
|
|
memcpy(Tmp, FileName.c_str(), FileName.size() + 1);
|
|
std::string Res = dirname(Tmp);
|
|
delete [] Tmp;
|
|
return Res;
|
|
}
|
|
|
|
std::string TmpDir() {
|
|
if (auto Env = getenv("TMPDIR"))
|
|
return Env;
|
|
return "/tmp";
|
|
}
|
|
|
|
bool IsInterestingCoverageFile(const std::string &FileName) {
|
|
if (FileName.find("compiler-rt/lib/") != std::string::npos)
|
|
return false; // sanitizer internal.
|
|
if (FileName.find("/usr/lib/") != std::string::npos)
|
|
return false;
|
|
if (FileName.find("/usr/include/") != std::string::npos)
|
|
return false;
|
|
if (FileName == "<null>")
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
|
|
void RawPrint(const char *Str) {
|
|
write(2, Str, strlen(Str));
|
|
}
|
|
|
|
} // namespace fuzzer
|
|
|
|
#endif // LIBFUZZER_POSIX
|