base/base_paths_android.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/base_paths.h"
   6
   7 #include <unistd.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/path_utils.h"
  11 #include "base/file_path.h"
  12 #include "base/logging.h"
  13
  14 namespace {
  15
  16 const char kSelfExe[] = "/proc/self/exe";
  17
  18 }  // namespace
  19
  20 namespace base {
  21
  22 bool PathProviderAndroid(int key, FilePath* result) {
  23   switch (key) {
  24     case base::FILE_EXE: {
  25       char bin_dir[PATH_MAX + 1];
  26       int bin_dir_size = readlink(kSelfExe, bin_dir, PATH_MAX);
  27       if (bin_dir_size < 0 || bin_dir_size > PATH_MAX) {
  28         NOTREACHED() << "Unable to resolve " << kSelfExe << ".";
  29         return false;
  30       }
  31       bin_dir[bin_dir_size] = 0;
  32       *result = FilePath(bin_dir);
  33       return true;
  34     }
  35     case base::FILE_MODULE:
  36       // dladdr didn't work in Android as only the file name was returned.
  37       NOTIMPLEMENTED();
  38       return false;
  39     case base::DIR_MODULE: {
  40       *result = FilePath(base::android::GetDataDirectory()).DirName()
  41           .Append("lib");
  42       return true;
  43     }
  44     case base::DIR_SOURCE_ROOT:
  45       // This const is only used for tests. Files in this directory are pushed
  46       // to the device via test script.
  47       *result = FilePath(FILE_PATH_LITERAL("/data/local/tmp/"));
  48       return true;
  49     case base::DIR_CACHE:
  50       *result = FilePath(base::android::GetCacheDirectory());
  51       return true;
  52     case base::DIR_ANDROID_APP_DATA:
  53       *result = FilePath(base::android::GetDataDirectory());
  54       return true;
  55     default:
  56       // Note: the path system expects this function to override the default
  57       // behavior. So no need to log an error if we don't support a given
  58       // path. The system will just use the default.
  59       return false;
  60   }
  61 }
  62
  63 }  // namespace base