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📄 Config.h.cmake(1.2 KB)
📄 ConnectionFileDescriptor.h(528 B)
📄 Debug.h(4.44 KB)
📄 Editline.h(12.4 KB)
📄 File.h(15.26 KB)
📄 FileAction.h(1.35 KB)
📄 FileCache.h(1.29 KB)
📄 FileSystem.h(6.84 KB)
📄 Host.h(10.04 KB)
📄 HostGetOpt.h(699 B)
📄 HostInfo.h(2.6 KB)
📄 HostInfoBase.h(4.05 KB)
📄 HostNativeProcess.h(728 B)
📄 HostNativeProcessBase.h(1.43 KB)
📄 HostNativeThread.h(690 B)
📄 HostNativeThreadBase.h(1.46 KB)
📄 HostNativeThreadForward.h(753 B)
📄 HostProcess.h(1.7 KB)
📄 HostThread.h(1.32 KB)
📄 LZMA.h(883 B)
📄 LockFile.h(704 B)
📄 LockFileBase.h(1.52 KB)
📄 MainLoop.h(3.83 KB)
📄 MainLoopBase.h(2.91 KB)
📄 MonitoringProcessLauncher.h(1.12 KB)
📄 OptionParser.h(1.51 KB)
📄 Pipe.h(668 B)
📄 PipeBase.h(2.26 KB)
📄 PosixApi.h(743 B)
📄 ProcessLaunchInfo.h(5.36 KB)
📄 ProcessLauncher.h(735 B)
📄 ProcessRunLock.h(2.02 KB)
📄 PseudoTerminal.h(8.45 KB)
📄 SafeMachO.h(3.25 KB)
📄 Socket.h(4.56 KB)
📄 SocketAddress.h(5.77 KB)
📄 StringConvert.h(1.26 KB)
📄 Terminal.h(5.12 KB)
📄 ThreadLauncher.h(1.39 KB)
📄 Time.h(718 B)
📄 XML.h(4.7 KB)
📁 common
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Editing: FileSystem.h

//===-- FileSystem.h --------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLDB_HOST_FILESYSTEM_H
#define LLDB_HOST_FILESYSTEM_H

#include "lldb/Host/File.h"
#include "lldb/Utility/DataBufferLLVM.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Status.h"

#include "llvm/ADT/Optional.h"
#include "llvm/Support/Chrono.h"
#include "llvm/Support/FileCollector.h"
#include "llvm/Support/VirtualFileSystem.h"

#include "lldb/lldb-types.h"

#include <stdint.h>
#include <stdio.h>
#include <sys/stat.h>

namespace lldb_private {
class FileSystem {
public:
  static const char *DEV_NULL;
  static const char *PATH_CONVERSION_ERROR;

FileSystem()
      : m_fs(llvm::vfs::getRealFileSystem()), m_collector(nullptr),
        m_mapped(false) {}
  FileSystem(std::shared_ptr<llvm::FileCollector> collector)
      : m_fs(llvm::vfs::getRealFileSystem()), m_collector(collector),
        m_mapped(false) {}
  FileSystem(llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs,
             bool mapped = false)
      : m_fs(fs), m_collector(nullptr), m_mapped(mapped) {}

FileSystem(const FileSystem &fs) = delete;
  FileSystem &operator=(const FileSystem &fs) = delete;

static FileSystem &Instance();

static void Initialize();
  static void Initialize(std::shared_ptr<llvm::FileCollector> collector);
  static llvm::Error Initialize(const FileSpec &mapping);
  static void Initialize(llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs);
  static void Terminate();

Status Symlink(const FileSpec &src, const FileSpec &dst);
  Status Readlink(const FileSpec &src, FileSpec &dst);

Status ResolveSymbolicLink(const FileSpec &src, FileSpec &dst);

/// Wraps ::fopen in a platform-independent way.
  FILE *Fopen(const char *path, const char *mode);

/// Wraps ::open in a platform-independent way.
  int Open(const char *path, int flags, int mode);

llvm::Expected<std::unique_ptr<File>>
  Open(const FileSpec &file_spec, File::OpenOptions options,
       uint32_t permissions = lldb::eFilePermissionsFileDefault,
       bool should_close_fd = true);

/// Get a directory iterator.
  /// \{
  llvm::vfs::directory_iterator DirBegin(const FileSpec &file_spec,
                                         std::error_code &ec);
  llvm::vfs::directory_iterator DirBegin(const llvm::Twine &dir,
                                         std::error_code &ec);
  /// \}

/// Returns the Status object for the given file.
  /// \{
  llvm::ErrorOr<llvm::vfs::Status> GetStatus(const FileSpec &file_spec) const;
  llvm::ErrorOr<llvm::vfs::Status> GetStatus(const llvm::Twine &path) const;
  /// \}

/// Returns the modification time of the given file.
  /// \{
  llvm::sys::TimePoint<> GetModificationTime(const FileSpec &file_spec) const;
  llvm::sys::TimePoint<> GetModificationTime(const llvm::Twine &path) const;
  /// \}

/// Returns the on-disk size of the given file in bytes.
  /// \{
  uint64_t GetByteSize(const FileSpec &file_spec) const;
  uint64_t GetByteSize(const llvm::Twine &path) const;
  /// \}

/// Return the current permissions of the given file.
  ///
  /// Returns a bitmask for the current permissions of the file (zero or more
  /// of the permission bits defined in File::Permissions).
  /// \{
  uint32_t GetPermissions(const FileSpec &file_spec) const;
  uint32_t GetPermissions(const llvm::Twine &path) const;
  uint32_t GetPermissions(const FileSpec &file_spec, std::error_code &ec) const;
  uint32_t GetPermissions(const llvm::Twine &path, std::error_code &ec) const;
  /// \}

/// Returns whether the given file exists.
  /// \{
  bool Exists(const FileSpec &file_spec) const;
  bool Exists(const llvm::Twine &path) const;
  /// \}

/// Returns whether the given file is readable.
  /// \{
  bool Readable(const FileSpec &file_spec) const;
  bool Readable(const llvm::Twine &path) const;
  /// \}

/// Returns whether the given path is a directory.
  /// \{
  bool IsDirectory(const FileSpec &file_spec) const;
  bool IsDirectory(const llvm::Twine &path) const;
  /// \}

/// Returns whether the given path is local to the file system.
  /// \{
  bool IsLocal(const FileSpec &file_spec) const;
  bool IsLocal(const llvm::Twine &path) const;
  /// \}

/// Make the given file path absolute.
  /// \{
  std::error_code MakeAbsolute(llvm::SmallVectorImpl<char> &path) const;
  std::error_code MakeAbsolute(FileSpec &file_spec) const;
  /// \}

/// Resolve path to make it canonical.
  /// \{
  void Resolve(llvm::SmallVectorImpl<char> &path);
  void Resolve(FileSpec &file_spec);
  /// \}

//// Create memory buffer from path.
  /// \{
  std::shared_ptr<DataBufferLLVM> CreateDataBuffer(const llvm::Twine &path,
                                                   uint64_t size = 0,
                                                   uint64_t offset = 0);
  std::shared_ptr<DataBufferLLVM> CreateDataBuffer(const FileSpec &file_spec,
                                                   uint64_t size = 0,
                                                   uint64_t offset = 0);
  /// \}

/// Call into the Host to see if it can help find the file.
  bool ResolveExecutableLocation(FileSpec &file_spec);

enum EnumerateDirectoryResult {
    /// Enumerate next entry in the current directory.
    eEnumerateDirectoryResultNext,
    /// Recurse into the current entry if it is a directory or symlink, or next
    /// if not.
    eEnumerateDirectoryResultEnter,
    /// Stop directory enumerations at any level.
    eEnumerateDirectoryResultQuit
  };

typedef EnumerateDirectoryResult (*EnumerateDirectoryCallbackType)(
      void *baton, llvm::sys::fs::file_type file_type, llvm::StringRef);

typedef std::function<EnumerateDirectoryResult(
      llvm::sys::fs::file_type file_type, llvm::StringRef)>
      DirectoryCallback;

void EnumerateDirectory(llvm::Twine path, bool find_directories,
                          bool find_files, bool find_other,
                          EnumerateDirectoryCallbackType callback,
                          void *callback_baton);

std::error_code GetRealPath(const llvm::Twine &path,
                              llvm::SmallVectorImpl<char> &output) const;

llvm::ErrorOr<std::string> GetExternalPath(const llvm::Twine &path);
  llvm::ErrorOr<std::string> GetExternalPath(const FileSpec &file_spec);

llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> GetVirtualFileSystem() {
    return m_fs;
  }

void Collect(const FileSpec &file_spec);
  void Collect(const llvm::Twine &file);

private:
  static llvm::Optional<FileSystem> &InstanceImpl();
  llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> m_fs;
  std::shared_ptr<llvm::FileCollector> m_collector;
  bool m_mapped;
};
} // namespace lldb_private

#endif

003 File Manager

Editing: FileSystem.h

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