Examples with NonWritableChannelException java.nio.channels.NonWritableChannelException used on opensource projects

Example 11 with NonWritableChannelException

use of java.nio.channels.NonWritableChannelException in project jdk8u_jdk by JetBrains.

the class FileChannelImpl method lock.

public FileLock lock(long position, long size, boolean shared) throws IOException {
    ensureOpen();
    if (shared && !readable)
        throw new NonReadableChannelException();
    if (!shared && !writable)
        throw new NonWritableChannelException();
    FileLockImpl fli = new FileLockImpl(this, position, size, shared);
    FileLockTable flt = fileLockTable();
    flt.add(fli);
    boolean completed = false;
    int ti = -1;
    try {
        begin();
        ti = threads.add();
        if (!isOpen())
            return null;
        int n;
        do {
            n = nd.lock(fd, true, position, size, shared);
        } while ((n == FileDispatcher.INTERRUPTED) && isOpen());
        if (isOpen()) {
            if (n == FileDispatcher.RET_EX_LOCK) {
                assert shared;
                FileLockImpl fli2 = new FileLockImpl(this, position, size, false);
                flt.replace(fli, fli2);
                fli = fli2;
            }
            completed = true;
        }
    } finally {
        if (!completed)
            flt.remove(fli);
        threads.remove(ti);
        try {
            end(completed);
        } catch (ClosedByInterruptException e) {
            throw new FileLockInterruptionException();
        }
    }
    return fli;
}

Example 12 with NonWritableChannelException

use of java.nio.channels.NonWritableChannelException in project jdk8u_jdk by JetBrains.

the class FileChannelImpl method transferTo.

public long transferTo(long position, long count, WritableByteChannel target) throws IOException {
    ensureOpen();
    if (!target.isOpen())
        throw new ClosedChannelException();
    if (!readable)
        throw new NonReadableChannelException();
    if (target instanceof FileChannelImpl && !((FileChannelImpl) target).writable)
        throw new NonWritableChannelException();
    if ((position < 0) || (count < 0))
        throw new IllegalArgumentException();
    long sz = size();
    if (position > sz)
        return 0;
    int icount = (int) Math.min(count, Integer.MAX_VALUE);
    if ((sz - position) < icount)
        icount = (int) (sz - position);
    long n;
    // Attempt a direct transfer, if the kernel supports it
    if ((n = transferToDirectly(position, icount, target)) >= 0)
        return n;
    // Attempt a mapped transfer, but only to trusted channel types
    if ((n = transferToTrustedChannel(position, icount, target)) >= 0)
        return n;
    // Slow path for untrusted targets
    return transferToArbitraryChannel(position, icount, target);
}

Example 13 with NonWritableChannelException

use of java.nio.channels.NonWritableChannelException in project jimfs by google.

the class JimfsFileChannelTest method testWritesInReadOnlyMode.

@Test
public void testWritesInReadOnlyMode() throws IOException {
    FileChannel channel = channel(regularFile(0), READ);
    try {
        channel.write(buffer("111"));
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.write(buffer("111"), 10);
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.write(new ByteBuffer[] { buffer("111"), buffer("111") });
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.write(new ByteBuffer[] { buffer("111"), buffer("111") }, 0, 2);
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.transferFrom(new ByteBufferChannel(bytes("1111")), 0, 4);
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.truncate(0);
        fail();
    } catch (NonWritableChannelException expected) {
    }
    try {
        channel.lock(0, 10, false);
        fail();
    } catch (NonWritableChannelException expected) {
    }
}

Example 14 with NonWritableChannelException

use of java.nio.channels.NonWritableChannelException in project robovm by robovm.

the class FileChannelImpl method basicLock.

private FileLock basicLock(long position, long size, boolean shared, boolean wait) throws IOException {
    int accessMode = (mode & O_ACCMODE);
    if (accessMode == O_RDONLY) {
        if (!shared) {
            throw new NonWritableChannelException();
        }
    } else if (accessMode == O_WRONLY) {
        if (shared) {
            throw new NonReadableChannelException();
        }
    }
    if (position < 0 || size < 0) {
        throw new IllegalArgumentException("position=" + position + " size=" + size);
    }
    FileLock pendingLock = new FileLockImpl(this, position, size, shared);
    addLock(pendingLock);
    StructFlock flock = new StructFlock();
    flock.l_type = (short) (shared ? F_RDLCK : F_WRLCK);
    flock.l_whence = (short) SEEK_SET;
    flock.l_start = position;
    flock.l_len = translateLockLength(size);
    boolean success = false;
    try {
        success = (Libcore.os.fcntlFlock(fd, wait ? F_SETLKW64 : F_SETLK64, flock) != -1);
    } catch (ErrnoException errnoException) {
        throw errnoException.rethrowAsIOException();
    } finally {
        if (!success) {
            removeLock(pendingLock);
        }
    }
    return success ? pendingLock : null;
}

Example 15 with NonWritableChannelException

use of java.nio.channels.NonWritableChannelException in project robovm by robovm.

the class FileChannelImpl method map.

public final MappedByteBuffer map(MapMode mapMode, long position, long size) throws IOException {
    checkOpen();
    if (mapMode == null) {
        throw new NullPointerException("mapMode == null");
    }
    if (position < 0 || size < 0 || size > Integer.MAX_VALUE) {
        throw new IllegalArgumentException("position=" + position + " size=" + size);
    }
    int accessMode = (mode & O_ACCMODE);
    if (accessMode == O_RDONLY) {
        if (mapMode != MapMode.READ_ONLY) {
            throw new NonWritableChannelException();
        }
    } else if (accessMode == O_WRONLY) {
        throw new NonReadableChannelException();
    }
    if (position + size > size()) {
        // and we only care about making our backing file longer here.
        try {
            Libcore.os.ftruncate(fd, position + size);
        } catch (ErrnoException ftruncateException) {
            // continue on.
            try {
                if (S_ISREG(Libcore.os.fstat(fd).st_mode) || ftruncateException.errno != EINVAL) {
                    throw ftruncateException.rethrowAsIOException();
                }
            } catch (ErrnoException fstatException) {
                throw fstatException.rethrowAsIOException();
            }
        }
    }
    long alignment = position - position % Libcore.os.sysconf(_SC_PAGE_SIZE);
    int offset = (int) (position - alignment);
    MemoryBlock block = MemoryBlock.mmap(fd, alignment, size + offset, mapMode);
    return new DirectByteBuffer(block, (int) size, offset, (mapMode == MapMode.READ_ONLY), mapMode);
}