15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/native_library.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <dlfcn.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/files/file_path.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 11868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread_restrictions.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16effb81e5f8246d0db0270817048dc992db66e9fbBen Murdochstd::string NativeLibraryLoadError::ToString() const { 17effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch return message; 18effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch} 19effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)NativeLibrary LoadNativeLibrary(const FilePath& library_path, 22effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch NativeLibraryLoadError* error) { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // dlopen() opens the file off disk. 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::ThreadRestrictions::AssertIOAllowed(); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We deliberately do not use RTLD_DEEPBIND. For the history why, please 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // refer to the bug tracker. Some useful bug reports to read include: 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // http://crbug.com/17943, http://crbug.com/17557, http://crbug.com/36892, 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and http://crbug.com/40794. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void* dl = dlopen(library_path.value().c_str(), RTLD_LAZY); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dl && error) 32effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch error->message = dlerror(); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return dl; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void UnloadNativeLibrary(NativeLibrary library) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ret = dlclose(library); 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ret < 0) { 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(ERROR) << "dlclose failed: " << dlerror(); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void* GetFunctionPointerFromNativeLibrary(NativeLibrary library, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* name) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return dlsym(library, name); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)string16 GetNativeLibraryName(const string16& name) { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ASCIIToUTF16("lib") + name + ASCIIToUTF16(".so"); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 58