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/logging.h"
  10 #include "base/android_os.h"
  11
  12 namespace base {
  13
  14 const char kSelfExe[] = "/proc/self/exe";
  15
  16 bool PathProviderAndroid(int key, FilePath* result) {
  17   switch (key) {
  18     case base::FILE_EXE: {
  19       char bin_dir[PATH_MAX + 1];
  20       int bin_dir_size = readlink(kSelfExe, bin_dir, PATH_MAX);
  21       if (bin_dir_size < 0 || bin_dir_size > PATH_MAX) {
  22         NOTREACHED() << "Unable to resolve " << kSelfExe << ".";
  23         return false;
  24       }
  25       bin_dir[bin_dir_size] = 0;
  26       *result = FilePath(bin_dir);
  27       return true;
  28     }
  29     case base::FILE_MODULE:
  30       // TODO(port): Find out whether we can use dladdr to implement this, and
  31       // then use DIR_MODULE's default implementation in base_file.cc.
  32       NOTIMPLEMENTED();
  33       return false;
  34     case base::DIR_MODULE: {
  35       AndroidOS* aos = AndroidOS::GetSharedInstance();
  36       DCHECK(aos);
  37       *result = aos->GetLibDirectory();
  38       return true;
  39     }
  40     case base::DIR_SOURCE_ROOT:
  41       // This const is only used for tests. Files in this directory are pushed
  42       // to the device via test script.
  43       *result = FilePath(FILE_PATH_LITERAL("/data/local/tmp/"));
  44       return true;
  45     case base::DIR_CACHE: {
  46       AndroidOS* aos = AndroidOS::GetSharedInstance();
  47       DCHECK(aos);
  48       *result = aos->GetCacheDirectory();
  49       return true;
  50     }
  51     default:
  52       // Note: the path system expects this function to override the default
  53       // behavior. So no need to log an error if we don't support a given
  54       // path. The system will just use the default.
  55       return false;
  56   }
  57 }
  58
  59 }  // namespace base