Remove base/platform_file.*

base/platform_file_posix.cc

Index: base/platform_file_posix.cc
diff --git a/base/platform_file_posix.cc b/base/platform_file_posix.cc
deleted file mode 100644
index cee1f611d11f5ed3937a73e9d46b7285781fb6e3..0000000000000000000000000000000000000000
--- a/base/platform_file_posix.cc
+++ /dev/null
@@ -1,363 +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.
-
-#include "base/platform_file.h"
-
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/metrics/sparse_histogram.h"
-#include "base/posix/eintr_wrapper.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/threading/thread_restrictions.h"
-
-#if defined(OS_ANDROID)
-#include "base/os_compat_android.h"
-#endif
-
-namespace base {
-
-// Make sure our Whence mappings match the system headers.
-COMPILE_ASSERT(PLATFORM_FILE_FROM_BEGIN   == SEEK_SET &&
-               PLATFORM_FILE_FROM_CURRENT == SEEK_CUR &&
-               PLATFORM_FILE_FROM_END     == SEEK_END, whence_matches_system);
-
-namespace {
-
-#if defined(OS_BSD) || defined(OS_MACOSX) || defined(OS_NACL)
-typedef struct stat stat_wrapper_t;
-static int CallFstat(int fd, stat_wrapper_t *sb) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return fstat(fd, sb);
-}
-#else
-typedef struct stat64 stat_wrapper_t;
-static int CallFstat(int fd, stat_wrapper_t *sb) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return fstat64(fd, sb);
-}
-#endif
-
-// NaCl doesn't provide the following system calls, so either simulate them or
-// wrap them in order to minimize the number of #ifdef's in this file.
-#if !defined(OS_NACL)
-static bool IsOpenAppend(PlatformFile file) {
-  return (fcntl(file, F_GETFL) & O_APPEND) != 0;
-}
-
-static int CallFtruncate(PlatformFile file, int64 length) {
-  return HANDLE_EINTR(ftruncate(file, length));
-}
-
-static int CallFsync(PlatformFile file) {
-  return HANDLE_EINTR(fsync(file));
-}
-
-static int CallFutimes(PlatformFile file, const struct timeval times[2]) {
-#ifdef __USE_XOPEN2K8
-  // futimens should be available, but futimes might not be
-  // http://pubs.opengroup.org/onlinepubs/9699919799/
-
-  timespec ts_times[2];
-  ts_times[0].tv_sec  = times[0].tv_sec;
-  ts_times[0].tv_nsec = times[0].tv_usec * 1000;
-  ts_times[1].tv_sec  = times[1].tv_sec;
-  ts_times[1].tv_nsec = times[1].tv_usec * 1000;
-
-  return futimens(file, ts_times);
-#else
-  return futimes(file, times);
-#endif
-}
-
-static PlatformFileError CallFctnlFlock(PlatformFile file, bool do_lock) {
-  struct flock lock;
-  lock.l_type = F_WRLCK;
-  lock.l_whence = SEEK_SET;
-  lock.l_start = 0;
-  lock.l_len = 0;  // Lock entire file.
-  if (HANDLE_EINTR(fcntl(file, do_lock ? F_SETLK : F_UNLCK, &lock)) == -1)
-    return ErrnoToPlatformFileError(errno);
-  return PLATFORM_FILE_OK;
-}
-#else  // defined(OS_NACL)
-
-static bool IsOpenAppend(PlatformFile file) {
-  // NaCl doesn't implement fcntl. Since NaCl's write conforms to the POSIX
-  // standard and always appends if the file is opened with O_APPEND, just
-  // return false here.
-  return false;
-}
-
-static int CallFtruncate(PlatformFile file, int64 length) {
-  NOTIMPLEMENTED();  // NaCl doesn't implement ftruncate.
-  return 0;
-}
-
-static int CallFsync(PlatformFile file) {
-  NOTIMPLEMENTED();  // NaCl doesn't implement fsync.
-  return 0;
-}
-
-static int CallFutimes(PlatformFile file, const struct timeval times[2]) {
-  NOTIMPLEMENTED();  // NaCl doesn't implement futimes.
-  return 0;
-}
-
-static PlatformFileError CallFctnlFlock(PlatformFile file, bool do_lock) {
-  NOTIMPLEMENTED();  // NaCl doesn't implement flock struct.
-  return PLATFORM_FILE_ERROR_INVALID_OPERATION;
-}
-#endif  // defined(OS_NACL)
-
-}  // namespace
-
-bool ClosePlatformFile(PlatformFile file) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return !IGNORE_EINTR(close(file));
-}
-
-int64 SeekPlatformFile(PlatformFile file,
-                       PlatformFileWhence whence,
-                       int64 offset) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || offset < 0)
-    return -1;
-
-  return lseek(file, static_cast<off_t>(offset), static_cast<int>(whence));
-}
-
-int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || size < 0)
-    return -1;
-
-  int bytes_read = 0;
-  int rv;
-  do {
-    rv = HANDLE_EINTR(pread(file, data + bytes_read,
-                            size - bytes_read, offset + bytes_read));
-    if (rv <= 0)
-      break;
-
-    bytes_read += rv;
-  } while (bytes_read < size);
-
-  return bytes_read ? bytes_read : rv;
-}
-
-int ReadPlatformFileAtCurrentPos(PlatformFile file, char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || size < 0)
-    return -1;
-
-  int bytes_read = 0;
-  int rv;
-  do {
-    rv = HANDLE_EINTR(read(file, data + bytes_read, size - bytes_read));
-    if (rv <= 0)
-      break;
-
-    bytes_read += rv;
-  } while (bytes_read < size);
-
-  return bytes_read ? bytes_read : rv;
-}
-
-int ReadPlatformFileNoBestEffort(PlatformFile file, int64 offset,
-                                 char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0)
-    return -1;
-
-  return HANDLE_EINTR(pread(file, data, size, offset));
-}
-
-int ReadPlatformFileCurPosNoBestEffort(PlatformFile file,
-                                       char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || size < 0)
-    return -1;
-
-  return HANDLE_EINTR(read(file, data, size));
-}
-
-int WritePlatformFile(PlatformFile file, int64 offset,
-                      const char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-
-  if (IsOpenAppend(file))
-    return WritePlatformFileAtCurrentPos(file, data, size);
-
-  if (file < 0 || size < 0)
-    return -1;
-
-  int bytes_written = 0;
-  int rv;
-  do {
-    rv = HANDLE_EINTR(pwrite(file, data + bytes_written,
-                             size - bytes_written, offset + bytes_written));
-    if (rv <= 0)
-      break;
-
-    bytes_written += rv;
-  } while (bytes_written < size);
-
-  return bytes_written ? bytes_written : rv;
-}
-
-int WritePlatformFileAtCurrentPos(PlatformFile file,
-                                  const char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || size < 0)
-    return -1;
-
-  int bytes_written = 0;
-  int rv;
-  do {
-    rv = HANDLE_EINTR(write(file, data + bytes_written, size - bytes_written));
-    if (rv <= 0)
-      break;
-
-    bytes_written += rv;
-  } while (bytes_written < size);
-
-  return bytes_written ? bytes_written : rv;
-}
-
-int WritePlatformFileCurPosNoBestEffort(PlatformFile file,
-                                        const char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0 || size < 0)
-    return -1;
-
-  return HANDLE_EINTR(write(file, data, size));
-}
-
-bool TruncatePlatformFile(PlatformFile file, int64 length) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return ((file >= 0) && !CallFtruncate(file, length));
-}
-
-bool FlushPlatformFile(PlatformFile file) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return !CallFsync(file);
-}
-
-bool TouchPlatformFile(PlatformFile file, const base::Time& last_access_time,
-                       const base::Time& last_modified_time) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file < 0)
-    return false;
-
-  timeval times[2];
-  times[0] = last_access_time.ToTimeVal();
-  times[1] = last_modified_time.ToTimeVal();
-
-  return !CallFutimes(file, times);
-}
-
-bool GetPlatformFileInfo(PlatformFile file, PlatformFileInfo* info) {
-  if (!info)
-    return false;
-
-  stat_wrapper_t file_info;
-  if (CallFstat(file, &file_info))
-    return false;
-
-  info->is_directory = S_ISDIR(file_info.st_mode);
-  info->is_symbolic_link = S_ISLNK(file_info.st_mode);
-  info->size = file_info.st_size;
-
-#if defined(OS_LINUX)
-  const time_t last_modified_sec = file_info.st_mtim.tv_sec;
-  const int64 last_modified_nsec = file_info.st_mtim.tv_nsec;
-  const time_t last_accessed_sec = file_info.st_atim.tv_sec;
-  const int64 last_accessed_nsec = file_info.st_atim.tv_nsec;
-  const time_t creation_time_sec = file_info.st_ctim.tv_sec;
-  const int64 creation_time_nsec = file_info.st_ctim.tv_nsec;
-#elif defined(OS_ANDROID)
-  const time_t last_modified_sec = file_info.st_mtime;
-  const int64 last_modified_nsec = file_info.st_mtime_nsec;
-  const time_t last_accessed_sec = file_info.st_atime;
-  const int64 last_accessed_nsec = file_info.st_atime_nsec;
-  const time_t creation_time_sec = file_info.st_ctime;
-  const int64 creation_time_nsec = file_info.st_ctime_nsec;
-#elif defined(OS_MACOSX) || defined(OS_IOS) || defined(OS_BSD)
-  const time_t last_modified_sec = file_info.st_mtimespec.tv_sec;
-  const int64 last_modified_nsec = file_info.st_mtimespec.tv_nsec;
-  const time_t last_accessed_sec = file_info.st_atimespec.tv_sec;
-  const int64 last_accessed_nsec = file_info.st_atimespec.tv_nsec;
-  const time_t creation_time_sec = file_info.st_ctimespec.tv_sec;
-  const int64 creation_time_nsec = file_info.st_ctimespec.tv_nsec;
-#else
-  // TODO(gavinp): Investigate a good high resolution option for OS_NACL.
-  const time_t last_modified_sec = file_info.st_mtime;
-  const int64 last_modified_nsec = 0;
-  const time_t last_accessed_sec = file_info.st_atime;
-  const int64 last_accessed_nsec = 0;
-  const time_t creation_time_sec = file_info.st_ctime;
-  const int64 creation_time_nsec = 0;
-#endif
-
-  info->last_modified =
-      base::Time::FromTimeT(last_modified_sec) +
-      base::TimeDelta::FromMicroseconds(last_modified_nsec /
-                                        base::Time::kNanosecondsPerMicrosecond);
-  info->last_accessed =
-      base::Time::FromTimeT(last_accessed_sec) +
-      base::TimeDelta::FromMicroseconds(last_accessed_nsec /
-                                        base::Time::kNanosecondsPerMicrosecond);
-  info->creation_time =
-      base::Time::FromTimeT(creation_time_sec) +
-      base::TimeDelta::FromMicroseconds(creation_time_nsec /
-                                        base::Time::kNanosecondsPerMicrosecond);
-  return true;
-}
-
-PlatformFileError LockPlatformFile(PlatformFile file) {
-  return CallFctnlFlock(file, true);
-}
-
-PlatformFileError UnlockPlatformFile(PlatformFile file) {
-  return CallFctnlFlock(file, false);
-}
-
-PlatformFileError ErrnoToPlatformFileError(int saved_errno) {
-  switch (saved_errno) {
-    case EACCES:
-    case EISDIR:
-    case EROFS:
-    case EPERM:
-      return PLATFORM_FILE_ERROR_ACCESS_DENIED;
-#if !defined(OS_NACL)  // ETXTBSY not defined by NaCl.
-    case ETXTBSY:
-      return PLATFORM_FILE_ERROR_IN_USE;
-#endif
-    case EEXIST:
-      return PLATFORM_FILE_ERROR_EXISTS;
-    case ENOENT:
-      return PLATFORM_FILE_ERROR_NOT_FOUND;
-    case EMFILE:
-      return PLATFORM_FILE_ERROR_TOO_MANY_OPENED;
-    case ENOMEM:
-      return PLATFORM_FILE_ERROR_NO_MEMORY;
-    case ENOSPC:
-      return PLATFORM_FILE_ERROR_NO_SPACE;
-    case ENOTDIR:
-      return PLATFORM_FILE_ERROR_NOT_A_DIRECTORY;
-    default:
-#if !defined(OS_NACL)  // NaCl build has no metrics code.
-      UMA_HISTOGRAM_SPARSE_SLOWLY("PlatformFile.UnknownErrors.Posix",
-                                  saved_errno);
-#endif
-      return PLATFORM_FILE_ERROR_FAILED;
-  }
-}
-
-}  // namespace base