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

Example 51 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class Network method bindSocket.

/**
     * Binds the specified {@link FileDescriptor} to this {@code Network}. All data traffic on the
     * socket represented by this file descriptor will be sent on this {@code Network},
     * irrespective of any process-wide network binding set by
     * {@link ConnectivityManager#bindProcessToNetwork}. The socket must not be connected.
     */
public void bindSocket(FileDescriptor fd) throws IOException {
    try {
        final SocketAddress peer = Os.getpeername(fd);
        final InetAddress inetPeer = ((InetSocketAddress) peer).getAddress();
        if (!inetPeer.isAnyLocalAddress()) {
            // routing upon mark changes.
            throw new SocketException("Socket is connected");
        }
    } catch (ErrnoException e) {
        // getpeername() failed.
        if (e.errno != OsConstants.ENOTCONN) {
            throw e.rethrowAsSocketException();
        }
    } catch (ClassCastException e) {
        // Wasn't an InetSocketAddress.
        throw new SocketException("Only AF_INET/AF_INET6 sockets supported");
    }
    final int err = NetworkUtils.bindSocketToNetwork(fd.getInt$(), netId);
    if (err != 0) {
        // bindSocketToNetwork returns negative errno.
        throw new ErrnoException("Binding socket to network " + netId, -err).rethrowAsSocketException();
    }
}

Example 52 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class LocalSocketImpl method getOption.

public Object getOption(int optID) throws IOException {
    if (fd == null) {
        throw new IOException("socket not created");
    }
    try {
        Object toReturn;
        switch(optID) {
            case SocketOptions.SO_TIMEOUT:
                StructTimeval timeval = Os.getsockoptTimeval(fd, OsConstants.SOL_SOCKET, OsConstants.SO_SNDTIMEO);
                toReturn = (int) timeval.toMillis();
                break;
            case SocketOptions.SO_RCVBUF:
            case SocketOptions.SO_SNDBUF:
            case SocketOptions.SO_REUSEADDR:
                int osOpt = javaSoToOsOpt(optID);
                toReturn = Os.getsockoptInt(fd, OsConstants.SOL_SOCKET, osOpt);
                break;
            case SocketOptions.SO_LINGER:
                StructLinger linger = Os.getsockoptLinger(fd, OsConstants.SOL_SOCKET, OsConstants.SO_LINGER);
                if (!linger.isOn()) {
                    toReturn = -1;
                } else {
                    toReturn = linger.l_linger;
                }
                break;
            case SocketOptions.TCP_NODELAY:
                toReturn = Os.getsockoptInt(fd, OsConstants.IPPROTO_TCP, OsConstants.TCP_NODELAY);
                break;
            default:
                throw new IOException("Unknown option: " + optID);
        }
        return toReturn;
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 53 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class LocalSocketImpl method setOption.

public void setOption(int optID, Object value) throws IOException {
    if (fd == null) {
        throw new IOException("socket not created");
    }
    /*
         * Boolean.FALSE is used to disable some options, so it
         * is important to distinguish between FALSE and unset.
         * We define it here that -1 is unset, 0 is FALSE, and 1
         * is TRUE.
         */
    int boolValue = -1;
    int intValue = 0;
    if (value instanceof Integer) {
        intValue = (Integer) value;
    } else if (value instanceof Boolean) {
        boolValue = ((Boolean) value) ? 1 : 0;
    } else {
        throw new IOException("bad value: " + value);
    }
    try {
        switch(optID) {
            case SocketOptions.SO_LINGER:
                StructLinger linger = new StructLinger(boolValue, intValue);
                Os.setsockoptLinger(fd, OsConstants.SOL_SOCKET, OsConstants.SO_LINGER, linger);
                break;
            case SocketOptions.SO_TIMEOUT:
                // The option must set both send and receive timeouts.
                // Note: The incoming timeout value is in milliseconds.
                StructTimeval timeval = StructTimeval.fromMillis(intValue);
                Os.setsockoptTimeval(fd, OsConstants.SOL_SOCKET, OsConstants.SO_RCVTIMEO, timeval);
                Os.setsockoptTimeval(fd, OsConstants.SOL_SOCKET, OsConstants.SO_SNDTIMEO, timeval);
                break;
            case SocketOptions.SO_RCVBUF:
            case SocketOptions.SO_SNDBUF:
            case SocketOptions.SO_REUSEADDR:
                int osOpt = javaSoToOsOpt(optID);
                Os.setsockoptInt(fd, OsConstants.SOL_SOCKET, osOpt, intValue);
                break;
            case SocketOptions.TCP_NODELAY:
                Os.setsockoptInt(fd, OsConstants.IPPROTO_TCP, OsConstants.TCP_NODELAY, intValue);
                break;
            default:
                throw new IOException("Unknown option: " + optID);
        }
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    }
}

Example 54 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class SharedPreferencesImpl method writeToFile.

// Note: must hold mWritingToDiskLock
private void writeToFile(MemoryCommitResult mcr, boolean isFromSyncCommit) {
    // Rename the current file so it may be used as a backup during the next read
    if (mFile.exists()) {
        boolean needsWrite = false;
        // Only need to write if the disk state is older than this commit
        if (mDiskStateGeneration < mcr.memoryStateGeneration) {
            if (isFromSyncCommit) {
                needsWrite = true;
            } else {
                synchronized (this) {
                    // be persisted.
                    if (mCurrentMemoryStateGeneration == mcr.memoryStateGeneration) {
                        needsWrite = true;
                    }
                }
            }
        }
        if (!needsWrite) {
            if (DEBUG) {
                Log.d(TAG, "skipped " + mcr.memoryStateGeneration + " -> " + mFile.getName());
            }
            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);
        if (DEBUG) {
            Log.d(TAG, "wrote " + mcr.memoryStateGeneration + " -> " + mFile.getName());
        }
        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();
        mDiskStateGeneration = mcr.memoryStateGeneration;
        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 55 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class IpReachabilityMonitor method probeNeighbor.

/**
     * Make the kernel perform neighbor reachability detection (IPv4 ARP or IPv6 ND)
     * for the given IP address on the specified interface index.
     *
     * @return 0 if the request was successfully passed to the kernel; otherwise return
     *         a non-zero error code.
     */
private static int probeNeighbor(int ifIndex, InetAddress ip) {
    final String msgSnippet = "probing ip=" + ip.getHostAddress() + "%" + ifIndex;
    if (DBG) {
        Log.d(TAG, msgSnippet);
    }
    final byte[] msg = RtNetlinkNeighborMessage.newNewNeighborMessage(1, ip, StructNdMsg.NUD_PROBE, ifIndex, null);
    int errno = -OsConstants.EPROTO;
    try (NetlinkSocket nlSocket = new NetlinkSocket(OsConstants.NETLINK_ROUTE)) {
        final long IO_TIMEOUT = 300L;
        nlSocket.connectToKernel();
        nlSocket.sendMessage(msg, 0, msg.length, IO_TIMEOUT);
        final ByteBuffer bytes = nlSocket.recvMessage(IO_TIMEOUT);
        // recvMessage() guaranteed to not return null if it did not throw.
        final NetlinkMessage response = NetlinkMessage.parse(bytes);
        if (response != null && response instanceof NetlinkErrorMessage && (((NetlinkErrorMessage) response).getNlMsgError() != null)) {
            errno = ((NetlinkErrorMessage) response).getNlMsgError().error;
            if (errno != 0) {
                // TODO: consider ignoring EINVAL (-22), which appears to be
                // normal when probing a neighbor for which the kernel does
                // not already have / no longer has a link layer address.
                Log.e(TAG, "Error " + msgSnippet + ", errmsg=" + response.toString());
            }
        } else {
            String errmsg;
            if (response == null) {
                bytes.position(0);
                errmsg = "raw bytes: " + NetlinkConstants.hexify(bytes);
            } else {
                errmsg = response.toString();
            }
            Log.e(TAG, "Error " + msgSnippet + ", errmsg=" + errmsg);
        }
    } catch (ErrnoException e) {
        Log.e(TAG, "Error " + msgSnippet, e);
        errno = -e.errno;
    } catch (InterruptedIOException e) {
        Log.e(TAG, "Error " + msgSnippet, e);
        errno = -OsConstants.ETIMEDOUT;
    } catch (SocketException e) {
        Log.e(TAG, "Error " + msgSnippet, e);
        errno = -OsConstants.EIO;
    }
    return errno;
}