Examples with ErrnoException android.system.ErrnoException used on opensource projects

Example 26 with ErrnoException

use of android.system.ErrnoException in project platform_frameworks_base by android.

the class ParcelFileDescriptor method fromFd.

/**
     * Create a new ParcelFileDescriptor from a raw native fd.  The new
     * ParcelFileDescriptor holds a dup of the original fd passed in here,
     * so you must still close that fd as well as the new ParcelFileDescriptor.
     *
     * @param fd The native fd that the ParcelFileDescriptor should dup.
     *
     * @return Returns a new ParcelFileDescriptor holding a FileDescriptor
     * for a dup of the given fd.
     */
public static ParcelFileDescriptor fromFd(int fd) throws IOException {
    final FileDescriptor original = new FileDescriptor();
    original.setInt$(fd);
    try {
        final FileDescriptor dup = Os.dup(original);
        return new ParcelFileDescriptor(dup);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 27 with ErrnoException

use of android.system.ErrnoException in project platform_frameworks_base by android.

the class ParcelFileDescriptor method createSocketPair.

/**
     * @hide
     */
public static ParcelFileDescriptor[] createSocketPair(int type) throws IOException {
    try {
        final FileDescriptor fd0 = new FileDescriptor();
        final FileDescriptor fd1 = new FileDescriptor();
        Os.socketpair(AF_UNIX, type, 0, fd0, fd1);
        return new ParcelFileDescriptor[] { new ParcelFileDescriptor(fd0), new ParcelFileDescriptor(fd1) };
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 28 with ErrnoException

use of android.system.ErrnoException in project platform_frameworks_base by android.

the class FileUtils method copyPermissions.

public static void copyPermissions(File from, File to) throws IOException {
    try {
        final StructStat stat = Os.stat(from.getAbsolutePath());
        Os.chmod(to.getAbsolutePath(), stat.st_mode);
        Os.chown(to.getAbsolutePath(), stat.st_uid, stat.st_gid);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 29 with ErrnoException

use of android.system.ErrnoException in project platform_frameworks_base by android.

the class SharedPreferencesImpl method writeToFile.

// Note: must hold mWritingToDiskLock
private void writeToFile(MemoryCommitResult mcr) {
    // Rename the current file so it may be used as a backup during the next read
    if (mFile.exists()) {
        if (!mcr.changesMade) {
            // If the file already exists, but no changes were
            // made to the underlying map, it's wasteful to
            // re-write the file.  Return as if we wrote it
            // out.
            mcr.setDiskWriteResult(true);
            return;
        }
        if (!mBackupFile.exists()) {
            if (!mFile.renameTo(mBackupFile)) {
                Log.e(TAG, "Couldn't rename file " + mFile + " to backup file " + mBackupFile);
                mcr.setDiskWriteResult(false);
                return;
            }
        } else {
            mFile.delete();
        }
    }
    // from the backup.
    try {
        FileOutputStream str = createFileOutputStream(mFile);
        if (str == null) {
            mcr.setDiskWriteResult(false);
            return;
        }
        XmlUtils.writeMapXml(mcr.mapToWriteToDisk, str);
        FileUtils.sync(str);
        str.close();
        ContextImpl.setFilePermissionsFromMode(mFile.getPath(), mMode, 0);
        try {
            final StructStat stat = Os.stat(mFile.getPath());
            synchronized (this) {
                mStatTimestamp = stat.st_mtime;
                mStatSize = stat.st_size;
            }
        } catch (ErrnoException e) {
        // Do nothing
        }
        // Writing was successful, delete the backup file if there is one.
        mBackupFile.delete();
        mcr.setDiskWriteResult(true);
        return;
    } catch (XmlPullParserException e) {
        Log.w(TAG, "writeToFile: Got exception:", e);
    } catch (IOException e) {
        Log.w(TAG, "writeToFile: Got exception:", e);
    }
    // Clean up an unsuccessfully written file
    if (mFile.exists()) {
        if (!mFile.delete()) {
            Log.e(TAG, "Couldn't clean up partially-written file " + mFile);
        }
    }
    mcr.setDiskWriteResult(false);
}

Example 30 with ErrnoException

use of android.system.ErrnoException in project platform_frameworks_base by android.

the class SharedPreferencesImpl method loadFromDisk.

private void loadFromDisk() {
    synchronized (SharedPreferencesImpl.this) {
        if (mLoaded) {
            return;
        }
        if (mBackupFile.exists()) {
            mFile.delete();
            mBackupFile.renameTo(mFile);
        }
    }
    // Debugging
    if (mFile.exists() && !mFile.canRead()) {
        Log.w(TAG, "Attempt to read preferences file " + mFile + " without permission");
    }
    Map map = null;
    StructStat stat = null;
    try {
        stat = Os.stat(mFile.getPath());
        if (mFile.canRead()) {
            BufferedInputStream str = null;
            try {
                str = new BufferedInputStream(new FileInputStream(mFile), 16 * 1024);
                map = XmlUtils.readMapXml(str);
            } catch (XmlPullParserException | IOException e) {
                Log.w(TAG, "getSharedPreferences", e);
            } finally {
                IoUtils.closeQuietly(str);
            }
        }
    } catch (ErrnoException e) {
    /* ignore */
    }
    synchronized (SharedPreferencesImpl.this) {
        mLoaded = true;
        if (map != null) {
            mMap = map;
            mStatTimestamp = stat.st_mtime;
            mStatSize = stat.st_size;
        } else {
            mMap = new HashMap<>();
        }
        notifyAll();
    }
}