func spliceDrain(pipefd int, sock *FD, max int) (int, error) {
	if err := sock.readLock(); err != nil {
		return 0, err
	}
	defer sock.readUnlock()
	if err := sock.pd.prepareRead(sock.isFile); err != nil {
		return 0, err
	}
	for {
		// In theory calling splice(2) with SPLICE_F_NONBLOCK could end up an infinite loop here,
		// because it could return EAGAIN ceaselessly when the write end of the pipe is full,

        fileAccess.updateFile(maybeUpdater);
        return maybeUpdater.result;
    }

    private void serialize(T newValue) {
        try {
            if (!cacheFile.isFile()) {
                cacheFile.createNewFile();
            }
            chmod.chmod(cacheFile.getParentFile(), 0700); // read-write-execute for user only
            chmod.chmod(cacheFile, 0600); // read-write for user only

        String path = getPathForLocalArtifact(request.getArtifact());
        File file = new File(getRepository().getBasedir(), path);

        LocalArtifactResult result = new LocalArtifactResult(request);
        if (file.isFile()) {
            result.setFile(file);
            result.setAvailable(true);
        }

        return result;
    }

            File candidate = new File(exeName);
            if (candidate.isFile()) {
                return candidate;
            }
            return null;
        }
        for (File dir : getPath()) {
            File candidate = new File(dir, exeName);
            if (candidate.isFile()) {
                return candidate;
            }
        }

        return null;
    }

interface IgnoredConfigurationInputs {
    /**
     * Checks if the [file] should be excluded from the configuration inputs fingerprint if it participates
     * in file system checks, such as [File.exists], [File.isFile] etc.
     */
    fun isFileSystemCheckIgnoredFor(file: File): Boolean

            return DefaultFileMetadata.missing(AccessType.DIRECT);
        }
        if (f.isDirectory()) {
            return DefaultFileMetadata.directory(AccessType.DIRECT);
        }
        if (f.isFile()) {
            return DefaultFileMetadata.file(f.lastModified(), f.length(), AccessType.DIRECT);
        }
        throw new UncheckedIOException("Unsupported file type for " + f.getAbsolutePath());
    }

            File dir = new File(cache.getBaseDir(), "maps/" + hash + "/" + moduleMap.getModuleName());
            File moduleMapFile = new File(dir, "module.modulemap");
            if (!moduleMapFile.isFile()) {
                generateFile(moduleMapFile, moduleMap.getModuleName(), moduleMap.getPublicHeaderPaths());
            }
            return moduleMapFile;
        });
    }

    @Override

        fooScript.renameTo(fooScript.parentFile.resolve("bar.gradle.kts"))

        build("generateScriptPluginAdapters")
        assertFalse(existing("build/generated-sources/kotlin-dsl-plugins/kotlin/FooPlugin.kt").exists())
        assertTrue(existing("build/generated-sources/kotlin-dsl-plugins/kotlin/BarPlugin.kt").isFile)
    }


    @Test

        return new DirectoryFileTree(dir, patternSet, fileSystem, postfix);
    }

    @Override
    public boolean contains(File file) {
        return DirectoryTrees.contains(fileSystem, this, file) && file.isFile();
    }

    @Override
    public void visitStructure(MinimalFileTreeStructureVisitor visitor, FileTreeInternal owner) {
        visitor.visitFileTree(dir, patternSet, owner);
    }

    @Override

    inner class ReadableConfigurationCacheStateFile(
        private val file: File,
        override val stateType: StateType
    ) : ConfigurationCacheStateFile {
        override val exists: Boolean
            get() = file.isFile

        override val stateFile: StateFile
            get() = StateFile(stateType, file)

        override fun outputStream(): OutputStream =
            throw UnsupportedOperationException()