session.release();
    }

    /**
     * Performance regression test for all critical fixes
     */
    @Test
    public void testOverallPerformanceRegression() throws Exception {
        System.out.println("=== Critical Performance Fixes Validation ===");

        // Test multiple components together
        long start = System.nanoTime();

import org.mockito.Mockito;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.Credentials;

/**
 * Security-focused test cases for SmbSessionImpl to verify race condition fixes.
 */
public class SmbSessionImplSecurityTest {

    private CIFSContext mockContext;
    private SmbTransportImpl mockTransport;
    private Configuration mockConfig;
    private Credentials mockCredentials;

        /**
         * The total number of log files.
         */
        protected long total = 0;

        /**
         * Sets the list of log files.
         * @param files The list of log files.
         * @return This ApiLogFilesResponse instance.
         */
        public ApiLogFilesResponse files(final List<Map<String, Object>> files) {
            this.files = files;
            return this;
        }

        Files.createDirectory(dir1);
        Files.writeString(dir1.resolve("file2.txt"), "file2");
        Path dir2 = dir1.resolve("dir2");
        Files.createDirectory(dir2);
        Files.writeString(dir2.resolve("file3.txt"), "file3");
        Path dir3 = usersDir.resolve("dir3");
        Files.createDirectory(dir3);
        Files.writeString(dir3.resolve("file4.txt"), "file4");

        // Setup public directory files

    private int bufDataOffset;

    static final int TRANSACTION_BUF_SIZE = 0xFFFF;

    /**
     * SMB TRANS2 subcommand for finding first matching files
     */
    public static final byte TRANS2_FIND_FIRST2 = (byte) 0x01;
    /**
     * SMB TRANS2 subcommand for finding next matching files
     */
    public static final byte TRANS2_FIND_NEXT2 = (byte) 0x02;
    /**
     * SMB TRANS2 subcommand for querying file system information

    /**
     * Gets the path to original files directory.
     *
     * @param names the path components to append to the orig directory
     * @return the Path object pointing to the original files directory
     */
    public static Path getOrigPath(final String... names) {
        return getPath("WEB-INF/", "orig", names);
    }

    /**
     * Gets the path to email template files directory.
     *

                    final File[] files = file.listFiles();
                    if (files != null) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Found {} child entries in directory: directory={}", files.length, file.getAbsolutePath());
                        }
                        for (final File f : files) {

     * <p>
     * <strong>Note:</strong> This method loads the entire file into memory.
     * For files larger than {@value #MAX_BUF_SIZE} bytes (10MB), an
     * {@link IORuntimeException} will be thrown to prevent OutOfMemoryError.
     * For large files, use streaming APIs instead.
     * </p>
     *
     * @param file
     *            The file. Must not be {@literal null}.

        try {
            Files.deleteIfExists(handleFile);
            log.debug("Removed persisted handle file: {}", handleFile);
        } catch (IOException e) {
            log.error("Failed to remove persisted handle file: " + handleFile, e);
        }
    }

    private void loadPersistedHandles() {
        if (!Files.exists(stateDirectory)) {
            return;
        }

        Files.createDirectory(testuser2Dir);

        // Basic files for existing tests
        Files.writeString(usersDir.resolve("file1.txt"), "file1");
        Path dir1 = usersDir.resolve("dir1");
        Files.createDirectory(dir1);
        Files.writeString(dir1.resolve("file2.txt"), "file2");
        Path dir2 = dir1.resolve("dir2");
        Files.createDirectory(dir2);
        Files.writeString(dir2.resolve("file3.txt"), "file3");