下面列出了android.os.FileUtils#setPermissions ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public static void logCriticalInfo(int priority, String msg) {
Slog.println(priority, TAG, msg);
EventLogTags.writePmCriticalInfo(msg);
try {
File fname = getSettingsProblemFile();
FileOutputStream out = new FileOutputStream(fname, true);
PrintWriter pw = new FastPrintWriter(out);
SimpleDateFormat formatter = new SimpleDateFormat();
String dateString = formatter.format(new Date(System.currentTimeMillis()));
pw.println(dateString + ": " + msg);
pw.close();
FileUtils.setPermissions(
fname.toString(),
FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IROTH,
-1, -1);
} catch (java.io.IOException e) {
}
}
@SuppressWarnings("deprecation")
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
private static File createFilesDirLocked(File file) {
if (!file.exists()) {
if (!file.mkdirs()) {
if (file.exists()) {
// spurious failure; probably racing with another process for this app
return file;
}
Log.w(TAG, "Unable to create files subdir " + file.getPath());
return null;
}
FileUtils.setPermissions(
file.getPath(),
FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH,
-1, -1);
}
return file;
}
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
@SuppressWarnings("deprecation")
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
@SuppressWarnings("deprecation")
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
@SuppressWarnings("deprecation")
static void setFilePermissionsFromMode(String name, int mode,
int extraPermissions) {
int perms = FileUtils.S_IRUSR|FileUtils.S_IWUSR
|FileUtils.S_IRGRP|FileUtils.S_IWGRP
|extraPermissions;
if ((mode&MODE_WORLD_READABLE) != 0) {
perms |= FileUtils.S_IROTH;
}
if ((mode&MODE_WORLD_WRITEABLE) != 0) {
perms |= FileUtils.S_IWOTH;
}
if (DEBUG) {
Log.i(TAG, "File " + name + ": mode=0x" + Integer.toHexString(mode)
+ ", perms=0x" + Integer.toHexString(perms));
}
FileUtils.setPermissions(name, perms, -1, -1);
}
private UserManagerService(Context context, PackageManagerService pm,
UserDataPreparer userDataPreparer, Object packagesLock, File dataDir) {
mContext = context;
mPm = pm;
mPackagesLock = packagesLock;
mHandler = new MainHandler();
mUserDataPreparer = userDataPreparer;
synchronized (mPackagesLock) {
mUsersDir = new File(dataDir, USER_INFO_DIR);
mUsersDir.mkdirs();
// Make zeroth user directory, for services to migrate their files to that location
File userZeroDir = new File(mUsersDir, String.valueOf(UserHandle.USER_SYSTEM));
userZeroDir.mkdirs();
FileUtils.setPermissions(mUsersDir.toString(),
FileUtils.S_IRWXU | FileUtils.S_IRWXG | FileUtils.S_IROTH | FileUtils.S_IXOTH,
-1, -1);
mUserListFile = new File(mUsersDir, USER_LIST_FILENAME);
initDefaultGuestRestrictions();
readUserListLP();
sInstance = this;
}
mLocalService = new LocalService();
LocalServices.addService(UserManagerInternal.class, mLocalService);
mLockPatternUtils = new LockPatternUtils(mContext);
mUserStates.put(UserHandle.USER_SYSTEM, UserState.STATE_BOOTING);
}
private void writeBitmapLP(UserInfo info, Bitmap bitmap) {
try {
File dir = new File(mUsersDir, Integer.toString(info.id));
File file = new File(dir, USER_PHOTO_FILENAME);
File tmp = new File(dir, USER_PHOTO_FILENAME_TMP);
if (!dir.exists()) {
dir.mkdir();
FileUtils.setPermissions(
dir.getPath(),
FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH,
-1, -1);
}
FileOutputStream os;
if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(tmp))
&& tmp.renameTo(file) && SELinux.restorecon(file)) {
info.iconPath = file.getAbsolutePath();
}
try {
os.close();
} catch (IOException ioe) {
// What the ... !
}
tmp.delete();
} catch (FileNotFoundException e) {
Slog.w(LOG_TAG, "Error setting photo for user ", e);
}
}
@Override
public void run() {
if (restoredSupplicantData != null || restoredWifiConfigFile != null) {
if (DEBUG_BACKUP) {
Log.v(TAG, "Starting deferred restore of wifi data");
}
final ContentResolver cr = getContentResolver();
final int scanAlways = Settings.Global.getInt(cr,
Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0);
final int retainedWifiState = enableWifi(false);
if (scanAlways != 0) {
Settings.Global.putInt(cr,
Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0);
}
// !!! Give the wifi stack a moment to quiesce
try { Thread.sleep(1500); } catch (InterruptedException e) {}
if (restoredSupplicantData != null) {
restoreWifiSupplicant(FILE_WIFI_SUPPLICANT,
restoredSupplicantData, restoredSupplicantData.length);
FileUtils.setPermissions(FILE_WIFI_SUPPLICANT,
FileUtils.S_IRUSR | FileUtils.S_IWUSR |
FileUtils.S_IRGRP | FileUtils.S_IWGRP,
Process.myUid(), Process.WIFI_UID);
}
if (restoredWifiConfigFile != null) {
restoreFileData(mWifiConfigFile,
restoredWifiConfigFile, restoredWifiConfigFile.length);
}
// restore the previous WIFI state.
if (scanAlways != 0) {
Settings.Global.putInt(cr,
Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, scanAlways);
}
enableWifi(retainedWifiState == WifiManager.WIFI_STATE_ENABLED ||
retainedWifiState == WifiManager.WIFI_STATE_ENABLING);
}
}
ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper,
Bundle extras) {
if (name == null) name = "";
try {
File dir = getWallpaperDir(wallpaper.userId);
if (!dir.exists()) {
dir.mkdir();
FileUtils.setPermissions(
dir.getPath(),
FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH,
-1, -1);
}
ParcelFileDescriptor fd = ParcelFileDescriptor.open(wallpaper.wallpaperFile,
MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE);
if (!SELinux.restorecon(wallpaper.wallpaperFile)) {
return null;
}
wallpaper.name = name;
wallpaper.wallpaperId = makeWallpaperIdLocked();
if (extras != null) {
extras.putInt(WallpaperManager.EXTRA_NEW_WALLPAPER_ID, wallpaper.wallpaperId);
}
// Nullify field to require new computation
wallpaper.primaryColors = null;
if (DEBUG) {
Slog.v(TAG, "updateWallpaperBitmapLocked() : id=" + wallpaper.wallpaperId
+ " name=" + name + " file=" + wallpaper.wallpaperFile.getName());
}
return fd;
} catch (FileNotFoundException e) {
Slog.w(TAG, "Error setting wallpaper", e);
}
return null;
}
@SuppressWarnings("ResultOfMethodCallIgnored")
public static void mkdirAndChmod(String dir, int permissions) {
dir = BASE_DIR + dir;
new File(dir).mkdir();
FileUtils.setPermissions(dir, permissions, -1, -1);
}
private void createDirectories() {
FileUtils.setPermissions(BASE_DIR, rwxrwxrwx, -1, -1);
mkdirAndChmod("conf", rwxrwxrwx);
mkdirAndChmod("log", rwxrwxrwx);
}
private static void setFilePermissionsForDb(String dbPath) {
int perms = FileUtils.S_IRUSR | FileUtils.S_IWUSR | FileUtils.S_IRGRP | FileUtils.S_IWGRP;
FileUtils.setPermissions(dbPath, perms, -1, -1);
}
@Override
public void onRestoreFile(ParcelFileDescriptor data, long size,
int type, String domain, String relpath, long mode, long mtime)
throws IOException {
if (DEBUG_BACKUP) Log.d(TAG, "onRestoreFile() invoked");
// Our data is actually a blob of flattened settings data identical to that
// produced during incremental backups. Just unpack and apply it all in
// turn.
FileInputStream instream = new FileInputStream(data.getFileDescriptor());
DataInputStream in = new DataInputStream(instream);
int version = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, "Flattened data version " + version);
if (version <= FULL_BACKUP_VERSION) {
// Generate the moved-to-global lookup table
HashSet<String> movedToGlobal = new HashSet<String>();
Settings.System.getMovedKeys(movedToGlobal);
Settings.Secure.getMovedKeys(movedToGlobal);
// system settings data first
int nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of settings data");
byte[] buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
restoreSettings(buffer, nBytes, Settings.System.CONTENT_URI, movedToGlobal);
// secure settings
nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of secure settings data");
if (nBytes > buffer.length) buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
restoreSettings(buffer, nBytes, Settings.Secure.CONTENT_URI, movedToGlobal);
// Global only if sufficiently new
if (version >= FULL_BACKUP_ADDED_GLOBAL) {
nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of global settings data");
if (nBytes > buffer.length) buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
movedToGlobal.clear(); // no redirection; this *is* the global namespace
restoreSettings(buffer, nBytes, Settings.Global.CONTENT_URI, movedToGlobal);
}
// locale
nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of locale data");
if (nBytes > buffer.length) buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
mSettingsHelper.setLocaleData(buffer, nBytes);
// wifi supplicant
nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of wifi supplicant data");
if (nBytes > buffer.length) buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
int retainedWifiState = enableWifi(false);
restoreWifiSupplicant(FILE_WIFI_SUPPLICANT, buffer, nBytes);
FileUtils.setPermissions(FILE_WIFI_SUPPLICANT,
FileUtils.S_IRUSR | FileUtils.S_IWUSR |
FileUtils.S_IRGRP | FileUtils.S_IWGRP,
Process.myUid(), Process.WIFI_UID);
// retain the previous WIFI state.
enableWifi(retainedWifiState == WifiManager.WIFI_STATE_ENABLED ||
retainedWifiState == WifiManager.WIFI_STATE_ENABLING);
// wifi config
nBytes = in.readInt();
if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of wifi config data");
if (nBytes > buffer.length) buffer = new byte[nBytes];
in.readFully(buffer, 0, nBytes);
restoreFileData(mWifiConfigFile, buffer, nBytes);
if (DEBUG_BACKUP) Log.d(TAG, "Full restore complete.");
} else {
data.close();
throw new IOException("Invalid file schema");
}
}
public synchronized void updateModulesList(boolean showToast, View view) {
try {
Log.i(TAG, "ModuleUtil -> updating modules.list");
int installedXposedVersion = XposedApp.getXposedVersion();
boolean disabled = StatusInstallerFragment.DISABLE_FILE.exists();
if (!XposedApp.getPreferences().getBoolean("skip_xposedminversion_check", false) && !disabled && installedXposedVersion <= 0 && showToast) {
Snackbar.make(view, R.string.notinstalled, Snackbar.LENGTH_SHORT).show();
return;
}
PrintWriter modulesList = new PrintWriter(MODULES_LIST_FILE);
PrintWriter enabledModulesList = new PrintWriter(XposedApp.ENABLED_MODULES_LIST_FILE);
List<InstalledModule> enabledModules = getEnabledModules();
for (InstalledModule module : enabledModules) {
if (!XposedApp.getPreferences().getBoolean("skip_xposedminversion_check", false) && (!disabled && (module.minVersion > installedXposedVersion || module.minVersion < MIN_MODULE_VERSION)) && showToast) {
Snackbar.make(view, R.string.notinstalled, Snackbar.LENGTH_SHORT).show();
continue;
}
modulesList.println(module.app.sourceDir);
try {
String installer = mPm.getInstallerPackageName(module.app.packageName);
if (!PLAY_STORE_PACKAGE.equals(installer))
enabledModulesList.println(module.app.packageName);
} catch (Exception ignored) {
}
}
modulesList.close();
enabledModulesList.close();
FileUtils.setPermissions(MODULES_LIST_FILE, rw_rw_r__, -1, -1);
FileUtils.setPermissions(XposedApp.ENABLED_MODULES_LIST_FILE, rw_rw_r__, -1, -1);
if (showToast) {
Snackbar.make(view, R.string.xposed_module_list_updated, Snackbar.LENGTH_SHORT).show();
}
} catch (IOException e) {
Log.e(TAG, "ModuleUtil -> cannot write " + MODULES_LIST_FILE, e);
Toast.makeText(mApp, "cannot write " + MODULES_LIST_FILE + e, Toast.LENGTH_SHORT).show();
}
}