1 // Copyright (c) 2009 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 #ifndef BASE_LINUX_UTIL_H__ 6 #define BASE_LINUX_UTIL_H__ 7 8 #include <stdint.h> 9 #include <sys/types.h> 10 11 #include <string> 12 13 class FilePath; 14 15 namespace base { 16 17 static const char kFindInodeSwitch[] = "--find-inode"; 18 19 // Makes a copy of |pixels| with the ordering changed from BGRA to RGBA. 20 // The caller is responsible for free()ing the data. If |stride| is 0, 21 // it's assumed to be 4 * |width|. 22 uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride); 23 24 // Get the Linux Distro if we can, or return "Unknown", similar to 25 // GetWinVersion() in base/win_util.h. 26 std::string GetLinuxDistro(); 27 28 // These are used to derive mocks for unittests. 29 class EnvironmentVariableGetter { 30 public: 31 virtual ~EnvironmentVariableGetter() {} 32 // Gets an environment variable's value and stores it in 33 // result. Returns false if the key is unset. 34 virtual bool Getenv(const char* variable_name, std::string* result) = 0; 35 36 // Create an instance of EnvironmentVariableGetter 37 static EnvironmentVariableGetter* Create(); 38 }; 39 40 // Get the home directory. 41 FilePath GetHomeDir(EnvironmentVariableGetter* env); 42 43 // Utility function for getting XDG directories. 44 // |env_name| is the name of an environment variable that we want to use to get 45 // a directory path. |fallback_dir| is the directory relative to $HOME that we 46 // use if |env_name| cannot be found or is empty. |fallback_dir| may be NULL. 47 // Examples of |env_name| are XDG_CONFIG_HOME and XDG_DATA_HOME. 48 FilePath GetXDGDirectory(EnvironmentVariableGetter* env, 49 const char* env_name, const char* fallback_dir); 50 51 // Wrapper around xdg_user_dir_lookup() from src/base/third_party/xdg-user-dirs 52 // This looks up "well known" user directories like the desktop and music 53 // folder. Examples of |dir_name| are DESKTOP and MUSIC. 54 FilePath GetXDGUserDirectory(EnvironmentVariableGetter* env, 55 const char* dir_name, const char* fallback_dir); 56 57 enum DesktopEnvironment { 58 DESKTOP_ENVIRONMENT_OTHER, 59 DESKTOP_ENVIRONMENT_GNOME, 60 // KDE3 and KDE4 are sufficiently different that we count 61 // them as two different desktop environments here. 62 DESKTOP_ENVIRONMENT_KDE3, 63 DESKTOP_ENVIRONMENT_KDE4, 64 }; 65 66 // Return an entry from the DesktopEnvironment enum with a best guess 67 // of which desktop environment we're using. We use this to know when 68 // to attempt to use preferences from the desktop environment -- 69 // proxy settings, password manager, etc. 70 DesktopEnvironment GetDesktopEnvironment(EnvironmentVariableGetter* env); 71 72 // Return a string representation of the given desktop environment. 73 // May return NULL in the case of DESKTOP_ENVIRONMENT_OTHER. 74 const char* GetDesktopEnvironmentName(DesktopEnvironment env); 75 // Convenience wrapper that calls GetDesktopEnvironment() first. 76 const char* GetDesktopEnvironmentName(EnvironmentVariableGetter* env); 77 78 // Return the inode number for the UNIX domain socket |fd|. 79 bool FileDescriptorGetInode(ino_t* inode_out, int fd); 80 81 // Find the process which holds the given socket, named by inode number. If 82 // multiple processes hold the socket, this function returns false. 83 bool FindProcessHoldingSocket(pid_t* pid_out, ino_t socket_inode); 84 85 } // namespace base 86 87 #endif // BASE_LINUX_UTIL_H__ 88
