1 files changed, 337 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/file_util_posix.cc b/ipc/chromium/src/base/file_util_posix.cc
new file mode 100644
index 000000000..d64897404
--- /dev/null
+++ b/ipc/chromium/src/base/file_util_posix.cc
@@ -0,0 +1,337 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 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/file_util.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fnmatch.h>
+#include <libgen.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/mman.h>
+#define _DARWIN_USE_64_BIT_INODE // Use 64-bit inode data structures
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <fstream>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/eintr_wrapper.h"
+#include "base/file_path.h"
+#include "base/logging.h"
+#include "base/string_util.h"
+#include "base/time.h"
+
+namespace file_util {
+
+#if defined(GOOGLE_CHROME_BUILD)
+static const char* kTempFileName = "com.google.chrome.XXXXXX";
+#else
+static const char* kTempFileName = "org.chromium.XXXXXX";
+#endif
+
+bool AbsolutePath(FilePath* path) {
+  char full_path[PATH_MAX];
+  if (realpath(path->value().c_str(), full_path) == NULL)
+    return false;
+  *path = FilePath(full_path);
+  return true;
+}
+
+// TODO(erikkay): The Windows version of this accepts paths like "foo/bar/*"
+// which works both with and without the recursive flag.  I'm not sure we need
+// that functionality. If not, remove from file_util_win.cc, otherwise add it
+// here.
+bool Delete(const FilePath& path) {
+  const char* path_str = path.value().c_str();
+  struct stat file_info;
+  int test = stat(path_str, &file_info);
+  if (test != 0) {
+    // The Windows version defines this condition as success.
+    bool ret = (errno == ENOENT || errno == ENOTDIR);
+    return ret;
+  }
+  if (!S_ISDIR(file_info.st_mode))
+    return (unlink(path_str) == 0);
+
+  return (rmdir(path_str) == 0);
+}
+
+bool PathExists(const FilePath& path) {
+  struct stat file_info;
+  return (stat(path.value().c_str(), &file_info) == 0);
+}
+
+bool PathIsWritable(const FilePath& path) {
+  FilePath test_path(path);
+  struct stat file_info;
+  if (stat(test_path.value().c_str(), &file_info) != 0) {
+    // If the path doesn't exist, test the parent dir.
+    test_path = test_path.DirName();
+    // If the parent dir doesn't exist, then return false (the path is not
+    // directly writable).
+    if (stat(test_path.value().c_str(), &file_info) != 0)
+      return false;
+  }
+  if (S_IWOTH & file_info.st_mode)
+    return true;
+  if (getegid() == file_info.st_gid && (S_IWGRP & file_info.st_mode))
+    return true;
+  if (geteuid() == file_info.st_uid && (S_IWUSR & file_info.st_mode))
+    return true;
+  return false;
+}
+
+bool DirectoryExists(const FilePath& path) {
+  struct stat file_info;
+  if (stat(path.value().c_str(), &file_info) == 0)
+    return S_ISDIR(file_info.st_mode);
+  return false;
+}
+
+bool ReadFromFD(int fd, char* buffer, size_t bytes) {
+  size_t total_read = 0;
+  while (total_read < bytes) {
+    ssize_t bytes_read =
+        HANDLE_EINTR(read(fd, buffer + total_read, bytes - total_read));
+    if (bytes_read <= 0)
+      break;
+    total_read += bytes_read;
+  }
+  return total_read == bytes;
+}
+
+// Creates and opens a temporary file in |directory|, returning the
+// file descriptor.  |path| is set to the temporary file path.
+// Note TODO(erikkay) comment in header for BlahFileName() calls; the
+// intent is to rename these files BlahFile() (since they create
+// files, not filenames).  This function does NOT unlink() the file.
+int CreateAndOpenFdForTemporaryFile(FilePath directory, FilePath* path) {
+  *path = directory.Append(kTempFileName);
+  const std::string& tmpdir_string = path->value();
+  // this should be OK since mkstemp just replaces characters in place
+  char* buffer = const_cast<char*>(tmpdir_string.c_str());
+
+  return mkstemp(buffer);
+}
+
+bool CreateTemporaryFileName(FilePath* path) {
+  FilePath directory;
+  if (!GetTempDir(&directory))
+    return false;
+  int fd = CreateAndOpenFdForTemporaryFile(directory, path);
+  if (fd < 0)
+    return false;
+  close(fd);
+  return true;
+}
+
+FILE* CreateAndOpenTemporaryShmemFile(FilePath* path) {
+  FilePath directory;
+  if (!GetShmemTempDir(&directory))
+    return NULL;
+
+  return CreateAndOpenTemporaryFileInDir(directory, path);
+}
+
+FILE* CreateAndOpenTemporaryFileInDir(const FilePath& dir, FilePath* path) {
+  int fd = CreateAndOpenFdForTemporaryFile(dir, path);
+  if (fd < 0)
+    return NULL;
+
+  return fdopen(fd, "a+");
+}
+
+bool CreateTemporaryFileNameInDir(const std::wstring& dir,
+                                  std::wstring* temp_file) {
+  // Not implemented yet.
+  NOTREACHED();
+  return false;
+}
+
+bool CreateNewTempDirectory(const FilePath::StringType& prefix,
+                            FilePath* new_temp_path) {
+  FilePath tmpdir;
+  if (!GetTempDir(&tmpdir))
+    return false;
+  tmpdir = tmpdir.Append(kTempFileName);
+  std::string tmpdir_string = tmpdir.value();
+#ifdef ANDROID
+  char* dtemp = NULL;
+#else
+  // this should be OK since mkdtemp just replaces characters in place
+  char* buffer = const_cast<char*>(tmpdir_string.c_str());
+  char* dtemp = mkdtemp(buffer);
+#endif
+  if (!dtemp)
+    return false;
+  *new_temp_path = FilePath(dtemp);
+  return true;
+}
+
+bool CreateDirectory(const FilePath& full_path) {
+  std::vector<FilePath> subpaths;
+
+  // Collect a list of all parent directories.
+  FilePath last_path = full_path;
+  subpaths.push_back(full_path);
+  for (FilePath path = full_path.DirName();
+       path.value() != last_path.value(); path = path.DirName()) {
+    subpaths.push_back(path);
+    last_path = path;
+  }
+
+  // Iterate through the parents and create the missing ones.
+  for (std::vector<FilePath>::reverse_iterator i = subpaths.rbegin();
+       i != subpaths.rend(); ++i) {
+    if (!DirectoryExists(*i)) {
+      if (mkdir(i->value().c_str(), 0777) != 0)
+        return false;
+    }
+  }
+  return true;
+}
+
+bool GetFileInfo(const FilePath& file_path, FileInfo* results) {
+  struct stat file_info;
+  if (stat(file_path.value().c_str(), &file_info) != 0)
+    return false;
+  results->is_directory = S_ISDIR(file_info.st_mode);
+  results->size = file_info.st_size;
+  return true;
+}
+
+FILE* OpenFile(const std::string& filename, const char* mode) {
+  return OpenFile(FilePath(filename), mode);
+}
+
+FILE* OpenFile(const FilePath& filename, const char* mode) {
+  return fopen(filename.value().c_str(), mode);
+}
+
+int ReadFile(const FilePath& filename, char* data, int size) {
+  int fd = open(filename.value().c_str(), O_RDONLY);
+  if (fd < 0)
+    return -1;
+
+  int ret_value = HANDLE_EINTR(read(fd, data, size));
+  HANDLE_EINTR(close(fd));
+  return ret_value;
+}
+
+int WriteFile(const FilePath& filename, const char* data, int size) {
+  int fd = creat(filename.value().c_str(), 0666);
+  if (fd < 0)
+    return -1;
+
+  // Allow for partial writes
+  ssize_t bytes_written_total = 0;
+  do {
+    ssize_t bytes_written_partial =
+      HANDLE_EINTR(write(fd, data + bytes_written_total,
+                         size - bytes_written_total));
+    if (bytes_written_partial < 0) {
+      HANDLE_EINTR(close(fd));
+      return -1;
+    }
+    bytes_written_total += bytes_written_partial;
+  } while (bytes_written_total < size);
+
+  HANDLE_EINTR(close(fd));
+  return bytes_written_total;
+}
+
+// Gets the current working directory for the process.
+bool GetCurrentDirectory(FilePath* dir) {
+  char system_buffer[PATH_MAX] = "";
+  if (!getcwd(system_buffer, sizeof(system_buffer))) {
+    NOTREACHED();
+    return false;
+  }
+  *dir = FilePath(system_buffer);
+  return true;
+}
+
+// Sets the current working directory for the process.
+bool SetCurrentDirectory(const FilePath& path) {
+  int ret = chdir(path.value().c_str());
+  return !ret;
+}
+
+#if !defined(OS_MACOSX)
+bool GetTempDir(FilePath* path) {
+  const char* tmp = getenv("TMPDIR");
+  if (tmp)
+    *path = FilePath(tmp);
+  else
+    *path = FilePath("/tmp");
+  return true;
+}
+
+bool GetShmemTempDir(FilePath* path) {
+#if defined(OS_LINUX) && !defined(ANDROID)
+  *path = FilePath("/dev/shm");
+  return true;
+#else
+  return GetTempDir(path);
+#endif
+}
+
+bool CopyFile(const FilePath& from_path, const FilePath& to_path) {
+  int infile = open(from_path.value().c_str(), O_RDONLY);
+  if (infile < 0)
+    return false;
+
+  int outfile = creat(to_path.value().c_str(), 0666);
+  if (outfile < 0) {
+    close(infile);
+    return false;
+  }
+
+  const size_t kBufferSize = 32768;
+  std::vector<char> buffer(kBufferSize);
+  bool result = true;
+
+  while (result) {
+    ssize_t bytes_read = HANDLE_EINTR(read(infile, &buffer[0], buffer.size()));
+    if (bytes_read < 0) {
+      result = false;
+      break;
+    }
+    if (bytes_read == 0)
+      break;
+    // Allow for partial writes
+    ssize_t bytes_written_per_read = 0;
+    do {
+      ssize_t bytes_written_partial = HANDLE_EINTR(write(
+          outfile,
+          &buffer[bytes_written_per_read],
+          bytes_read - bytes_written_per_read));
+      if (bytes_written_partial < 0) {
+        result = false;
+        break;
+      }
+      bytes_written_per_read += bytes_written_partial;
+    } while (bytes_written_per_read < bytes_read);
+  }
+
+  if (HANDLE_EINTR(close(infile)) < 0)
+    result = false;
+  if (HANDLE_EINTR(close(outfile)) < 0)
+    result = false;
+
+  return result;
+}
+#endif // !defined(OS_MACOSX)
+
+} // namespace file_util