*
     * @param b the byte array containing the data to write
     * @param off the start offset in the data
     * @param len the number of bytes to write
     * @param flags write operation flags
     * @throws IOException if an I/O error occurs
     */
    public void writeDirect(final byte[] b, int off, int len, final int flags) throws IOException {
        if (len <= 0) {
            return;

 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.lease;

import static org.junit.jupiter.api.Assertions.assertEquals;

 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb2.rdma.tcp;

import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;

 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.fscc;

import java.util.Date;

import jcifs.internal.SMBProtocolDecodingException;

     *
     * @param val the integer value to convert to hexadecimal characters
     * @param dst the destination character array to write the hex digits into
     * @param dstIndex the starting index in the destination array
     * @param size the number of hex digits to write (will be left-padded with zeros)
     */
    public static void toHexChars(int val, final char dst[], final int dstIndex, int size) {

    /**
     * Writes data to the specified file path.
     *
     * @param path the file path to write to
     * @param data the data to write
     */
    protected void write(final String path, final byte[] data) {
        validateFilePath(path);
        LdiFileUtil.write(path, data);
    }

    /**
     * Validates the file path.
     *
     * @param path the file path to validate

    int FILE_READ_ATTRIBUTES = 0x00000080; // 8
    /** File write attributes access right */
    int FILE_WRITE_ATTRIBUTES = 0x00000100; // 9
    /** Delete access right */
    int DELETE = 0x00010000; // 16
    /** Read control access right */
    int READ_CONTROL = 0x00020000; // 17
    /** Write DAC access right */
    int WRITE_DAC = 0x00040000; // 18
    /** Write owner access right */
    int WRITE_OWNER = 0x00080000; // 19

        // Create a file larger than MAX_BUF_SIZE (10MB)
        // Write 11MB of data
        try (FileOutputStream fos = new FileOutputStream(largeFile)) {
            final byte[] chunk = new byte[1024 * 1024]; // 1MB
            for (int i = 0; i < 11; i++) { // Write 11MB
                fos.write(chunk);
            }
        }

        try {
            FileUtil.readBytes(largeFile);

    }

    @Override
    public void rdmaWrite(RdmaMemoryRegion localRegion, long remoteAddress, int remoteKey, int length) throws IOException {
        // TCP fallback doesn't support real RDMA write
        throw new UnsupportedOperationException("RDMA write not supported by TCP fallback");
    }

    @Override
    public RdmaNegotiateResponse negotiate(RdmaNegotiateRequest request) throws IOException {

        try {
            // In real implementation, this would perform RDMA write:
            // Similar to rdmaRead but with IBV_WR_RDMA_WRITE opcode

            log.debug("DiSNI RDMA write completed, {} bytes", length);

        } catch (Exception e) {
            state = RdmaConnectionState.ERROR;
            throw new IOException("DiSNI RDMA write failed", e);
        }
    }

    @Override