Remove base/platform_file.*

base/platform_file.h

Index: base/platform_file.h
diff --git a/base/platform_file.h b/base/platform_file.h
deleted file mode 100644
index 27686d1044b3534a9169b5f393d45baf68a2d7d9..0000000000000000000000000000000000000000
--- a/base/platform_file.h
+++ /dev/null
@@ -1,268 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_PLATFORM_FILE_H_
-#define BASE_PLATFORM_FILE_H_
-
-#include "build/build_config.h"
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
-#include <string>
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/files/file_path.h"
-#include "base/time/time.h"
-
-namespace base {
-
-// ***************************************************************************
-// ***** Don't use anything from this file anymore. It is being removed!
-// ***** Use base/files/file.h instead
-// ***************************************************************************
-
-// PLATFORM_FILE_(OPEN|CREATE).* are mutually exclusive. You should specify
-// exactly one of the five (possibly combining with other flags) when opening
-// or creating a file.
-// PLATFORM_FILE_(WRITE|APPEND) are mutually exclusive. This is so that APPEND
-// behavior will be consistent with O_APPEND on POSIX.
-// PLATFORM_FILE_EXCLUSIVE_(READ|WRITE) only grant exclusive access to the file
-// on creation on POSIX; for existing files, consider using LockPlatformFile().
-enum PlatformFileFlags {
-  PLATFORM_FILE_OPEN = 1 << 0,             // Opens a file, only if it exists.
-  PLATFORM_FILE_CREATE = 1 << 1,           // Creates a new file, only if it
-                                           // does not already exist.
-  PLATFORM_FILE_OPEN_ALWAYS = 1 << 2,      // May create a new file.
-  PLATFORM_FILE_CREATE_ALWAYS = 1 << 3,    // May overwrite an old file.
-  PLATFORM_FILE_OPEN_TRUNCATED = 1 << 4,   // Opens a file and truncates it,
-                                           // only if it exists.
-  PLATFORM_FILE_READ = 1 << 5,
-  PLATFORM_FILE_WRITE = 1 << 6,
-  PLATFORM_FILE_APPEND = 1 << 7,
-  PLATFORM_FILE_EXCLUSIVE_READ = 1 << 8,   // EXCLUSIVE is opposite of Windows
-                                           // SHARE
-  PLATFORM_FILE_EXCLUSIVE_WRITE = 1 << 9,
-  PLATFORM_FILE_ASYNC = 1 << 10,
-  PLATFORM_FILE_TEMPORARY = 1 << 11,       // Used on Windows only
-  PLATFORM_FILE_HIDDEN = 1 << 12,          // Used on Windows only
-  PLATFORM_FILE_DELETE_ON_CLOSE = 1 << 13,
-
-  PLATFORM_FILE_WRITE_ATTRIBUTES = 1 << 14,  // Used on Windows only
-
-  PLATFORM_FILE_SHARE_DELETE = 1 << 15,      // Used on Windows only
-
-  PLATFORM_FILE_TERMINAL_DEVICE = 1 << 16,   // Serial port flags
-  PLATFORM_FILE_BACKUP_SEMANTICS = 1 << 17,  // Used on Windows only
-
-  PLATFORM_FILE_EXECUTE = 1 << 18,           // Used on Windows only
-};
-
-// This enum has been recorded in multiple histograms. If the order of the
-// fields needs to change, please ensure that those histograms are obsolete or
-// have been moved to a different enum.
-//
-// PLATFORM_FILE_ERROR_ACCESS_DENIED is returned when a call fails because of
-// a filesystem restriction. PLATFORM_FILE_ERROR_SECURITY is returned when a
-// browser policy doesn't allow the operation to be executed.
-enum PlatformFileError {
-  PLATFORM_FILE_OK = 0,
-  PLATFORM_FILE_ERROR_FAILED = -1,
-  PLATFORM_FILE_ERROR_IN_USE = -2,
-  PLATFORM_FILE_ERROR_EXISTS = -3,
-  PLATFORM_FILE_ERROR_NOT_FOUND = -4,
-  PLATFORM_FILE_ERROR_ACCESS_DENIED = -5,
-  PLATFORM_FILE_ERROR_TOO_MANY_OPENED = -6,
-  PLATFORM_FILE_ERROR_NO_MEMORY = -7,
-  PLATFORM_FILE_ERROR_NO_SPACE = -8,
-  PLATFORM_FILE_ERROR_NOT_A_DIRECTORY = -9,
-  PLATFORM_FILE_ERROR_INVALID_OPERATION = -10,
-  PLATFORM_FILE_ERROR_SECURITY = -11,
-  PLATFORM_FILE_ERROR_ABORT = -12,
-  PLATFORM_FILE_ERROR_NOT_A_FILE = -13,
-  PLATFORM_FILE_ERROR_NOT_EMPTY = -14,
-  PLATFORM_FILE_ERROR_INVALID_URL = -15,
-  PLATFORM_FILE_ERROR_IO = -16,
-  // Put new entries here and increment PLATFORM_FILE_ERROR_MAX.
-  PLATFORM_FILE_ERROR_MAX = -17
-};
-
-// This explicit mapping matches both FILE_ on Windows and SEEK_ on Linux.
-enum PlatformFileWhence {
-  PLATFORM_FILE_FROM_BEGIN   = 0,
-  PLATFORM_FILE_FROM_CURRENT = 1,
-  PLATFORM_FILE_FROM_END     = 2
-};
-
-// Used to hold information about a given file.
-// If you add more fields to this structure (platform-specific fields are OK),
-// make sure to update all functions that use it in file_util_{win|posix}.cc
-// too, and the ParamTraits<base::PlatformFileInfo> implementation in
-// chrome/common/common_param_traits.cc.
-struct BASE_EXPORT PlatformFileInfo {
-  PlatformFileInfo();
-  ~PlatformFileInfo();
-
-  // The size of the file in bytes.  Undefined when is_directory is true.
-  int64 size;
-
-  // True if the file corresponds to a directory.
-  bool is_directory;
-
-  // True if the file corresponds to a symbolic link.
-  bool is_symbolic_link;
-
-  // The last modified time of a file.
-  base::Time last_modified;
-
-  // The last accessed time of a file.
-  base::Time last_accessed;
-
-  // The creation time of a file.
-  base::Time creation_time;
-};
-
-#if defined(OS_WIN)
-typedef HANDLE PlatformFile;
-const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE;
-BASE_EXPORT PlatformFileError LastErrorToPlatformFileError(DWORD last_error);
-#elif defined(OS_POSIX)
-typedef int PlatformFile;
-const PlatformFile kInvalidPlatformFileValue = -1;
-BASE_EXPORT PlatformFileError ErrnoToPlatformFileError(int saved_errno);
-#endif
-
-// Closes a file handle. Returns |true| on success and |false| otherwise.
-BASE_EXPORT bool ClosePlatformFile(PlatformFile file);
-
-// Changes current position in the file to an |offset| relative to an origin
-// defined by |whence|. Returns the resultant current position in the file
-// (relative to the start) or -1 in case of error.
-BASE_EXPORT int64 SeekPlatformFile(PlatformFile file,
-                                   PlatformFileWhence whence,
-                                   int64 offset);
-
-// Reads the given number of bytes (or until EOF is reached) starting with the
-// given offset. Returns the number of bytes read, or -1 on error. Note that
-// this function makes a best effort to read all data on all platforms, so it is
-// not intended for stream oriented files but instead for cases when the normal
-// expectation is that actually |size| bytes are read unless there is an error.
-BASE_EXPORT int ReadPlatformFile(PlatformFile file, int64 offset,
-                                 char* data, int size);
-
-// Same as above but without seek.
-BASE_EXPORT int ReadPlatformFileAtCurrentPos(PlatformFile file,
-                                             char* data, int size);
-
-// Reads the given number of bytes (or until EOF is reached) starting with the
-// given offset, but does not make any effort to read all data on all platforms.
-// Returns the number of bytes read, or -1 on error.
-BASE_EXPORT int ReadPlatformFileNoBestEffort(PlatformFile file, int64 offset,
-                                             char* data, int size);
-
-// Same as above but without seek.
-BASE_EXPORT int ReadPlatformFileCurPosNoBestEffort(PlatformFile file,
-                                                   char* data, int size);
-
-// Writes the given buffer into the file at the given offset, overwritting any
-// data that was previously there. Returns the number of bytes written, or -1
-// on error. Note that this function makes a best effort to write all data on
-// all platforms.
-// Ignores the offset and writes to the end of the file if the file was opened
-// with PLATFORM_FILE_APPEND.
-BASE_EXPORT int WritePlatformFile(PlatformFile file, int64 offset,
-                                  const char* data, int size);
-
-// Save as above but without seek.
-BASE_EXPORT int WritePlatformFileAtCurrentPos(PlatformFile file,
-                                              const char* data, int size);
-
-// Save as above but does not make any effort to write all data on all
-// platforms. Returns the number of bytes written, or -1 on error.
-BASE_EXPORT int WritePlatformFileCurPosNoBestEffort(PlatformFile file,
-                                                    const char* data, int size);
-
-// Truncates the given file to the given length. If |length| is greater than
-// the current size of the file, the file is extended with zeros. If the file
-// doesn't exist, |false| is returned.
-BASE_EXPORT bool TruncatePlatformFile(PlatformFile file, int64 length);
-
-// Flushes the buffers of the given file.
-BASE_EXPORT bool FlushPlatformFile(PlatformFile file);
-
-// Touches the given file.
-BASE_EXPORT bool TouchPlatformFile(PlatformFile file,
-                                   const Time& last_access_time,
-                                   const Time& last_modified_time);
-
-// Returns some information for the given file.
-BASE_EXPORT bool GetPlatformFileInfo(PlatformFile file, PlatformFileInfo* info);
-
-// Attempts to take an exclusive write lock on the file. Returns immediately
-// (i.e. does not wait for another process to unlock the file). If the lock
-// was obtained, the result will be PLATFORM_FILE_OK. A lock only guarantees
-// that other processes may not also take a lock on the same file with the
-// same API - it may still be opened, renamed, unlinked, etc.
-//
-// Common semantics:
-//  * Locks are held by processes, but not inherited by child processes.
-//  * Locks are released by the OS on file handle close or process termination.
-//  * Locks are reliable only on local filesystems.
-//  * Duplicated file handles may also write to locked files.
-// Windows-specific semantics:
-//  * Locks are mandatory for read/write APIs, advisory for mapping APIs.
-//  * Within a process, locking the same file (by the same or new handle)
-//    will fail.
-// POSIX-specific semantics:
-//  * Locks are advisory only.
-//  * Within a process, locking the same file (by the same or new handle)
-//    will succeed.
-//  * Closing any descriptor on a given file releases the lock.
-BASE_EXPORT PlatformFileError LockPlatformFile(PlatformFile file);
-
-// Unlock a file previously locked with LockPlatformFile.
-BASE_EXPORT PlatformFileError UnlockPlatformFile(PlatformFile file);
-
-// Use this class to pass ownership of a PlatformFile to a receiver that may or
-// may not want to accept it.  This class does not own the storage for the
-// PlatformFile.
-//
-// EXAMPLE:
-//
-//  void MaybeProcessFile(PassPlatformFile pass_file) {
-//    if (...) {
-//      PlatformFile file = pass_file.ReleaseValue();
-//      // Now, we are responsible for closing |file|.
-//    }
-//  }
-//
-//  void OpenAndMaybeProcessFile(const FilePath& path) {
-//    PlatformFile file = CreatePlatformFile(path, ...);
-//    MaybeProcessFile(PassPlatformFile(&file));
-//    if (file != kInvalidPlatformFileValue)
-//      ClosePlatformFile(file);
-//  }
-//
-class BASE_EXPORT PassPlatformFile {
- public:
-  explicit PassPlatformFile(PlatformFile* value) : value_(value) {
-  }
-
-  // Called to retrieve the PlatformFile stored in this object.  The caller
-  // gains ownership of the PlatformFile and is now responsible for closing it.
-  // Any subsequent calls to this method will return an invalid PlatformFile.
-  PlatformFile ReleaseValue() {
-    PlatformFile temp = *value_;
-    *value_ = kInvalidPlatformFileValue;
-    return temp;
-  }
-
- private:
-  PlatformFile* value_;
-};
-
-}  // namespace base
-
-#endif  // BASE_PLATFORM_FILE_H_