Update project to JDK 21 and JEP 442

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
       - name: Setup fuse
@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
       - name: Setup fuse
@@ -59,7 +59,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
       - name: Setup fuse
@@ -83,7 +83,7 @@ jobs:
            fetch-depth: 0
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
       - name: Cache SonarCloud packages

.github/workflows/publish-central.yml

@@ -15,7 +15,7 @@ jobs:
           ref: "refs/tags/${{ github.event.inputs.tag }}"
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
           server-id: ossrh # Value of the distributionManagement/repository/id field of the pom.xml

.github/workflows/publish-github.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
-          java-version: 20
+          java-version: 21-ea
           distribution: 'zulu'
           cache: 'maven'
           gpg-private-key: ${{ secrets.RELEASES_GPG_PRIVATE_KEY }} # Value of the GPG private key to import

README.md

@@ -6,11 +6,11 @@
 
 # jFUSE
 
-Zero-Dependency Java bindings for FUSE using [JEP 434](https://openjdk.org/jeps/434).
+Zero-Dependency Java bindings for FUSE using [JEP 4442](https://openjdk.org/jeps/442).
 
 ## Status
 
-This is currently an experimental library requiring JDK 20. As long as the [Foreign Function & Memory API](https://openjdk.org/jeps/434) is incubating, the required JDK will increase.
+This is currently an experimental library requiring JDK 21. As long as the [Foreign Function & Memory API](https://openjdk.org/jeps/442) is incubating, the required JDK will increase.
 Older JDK versions are *not supported*. Please refer to an older version of this lib, if you  are interested in using it with an older JDK. Older versions will not receive patches or any kind of support, though!
 
 We attempt to support libfuse 3.x on Linux and Windows while also remaining compatible with libfuse 2.x on macOS, leading to some compromises in the API.

jfuse-api/src/main/java/org/cryptomator/jfuse/api/Fuse.java

@@ -23,7 +23,6 @@
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Function;
 
@@ -43,7 +42,7 @@ public abstract class Fuse implements AutoCloseable {
 	/**
 	 * The memory session associated with the lifecycle of this Fuse instance.
 	 */
-	protected final Arena fuseArena = Arena.openShared();
+	protected final Arena fuseArena = Arena.ofShared();
 
 	/**
 	 * The file system operations invoked by this FUSE file system.
@@ -125,7 +124,7 @@ public synchronized void mount(String progName, Path mountPoint, String... flags
 
 		try {
 			var fuseMount = this.mount(args);
-			Future<Integer> fuseLoop = executor.submit(() -> fuseLoop(fuseMount));
+			Future<Integer> fuseLoop = executor.submit(fuseMount::loop);
 			waitForMountingToComplete(mountPoint, fuseLoop);
 			if (fuseLoop.isDone()) {
 				throw new FuseMountFailedException("fuse_loop() returned prematurely with non-zero exit code " + fuseLoop.get());
@@ -153,16 +152,6 @@ void waitForMountingToComplete(Path mountPoint, Future<Integer> fuseLoop) throws
 		} while (!fuseLoop.isDone() && !mountProbeSucceeded.await(200, TimeUnit.MILLISECONDS));
 	}
 
-	@Blocking
-	private int fuseLoop(FuseMount mount) {
-		AtomicInteger result = new AtomicInteger();
-		fuseArena.scope().whileAlive(() -> {
-			int r = mount.loop();
-			result.set(r);
-		});
-		return result.get();
-	}
-
 	/**
 	 * Mounts the fuse file system.
 	 *

jfuse-linux-aarch64/pom.xml

@@ -71,10 +71,9 @@
 						<artifactId>jextract-maven-plugin</artifactId>
 						<version>0.3.0</version>
 						<configuration>
-							<executable>/Users/sebastian/Documents/Cryptomator/jextract/build/jextract/bin/jextract</executable>
+							<executable>/Users/sebastian/git/github.com/openjdk/jextract/build/jextract/bin/jextract</executable>
 							<headerSearchPaths>${linux.headerSearchPath}</headerSearchPaths>
 							<outputDirectory>${project.build.sourceDirectory}</outputDirectory>
-							<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr</targetPackage>
 						</configuration>
 						<executions>
 							<execution>
@@ -84,6 +83,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${project.parent.basedir}/libfuse3/include/fuse.h</headerFile>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.fuse3</targetPackage>
 									<headerClassName>fuse_h</headerClassName>
 									<cPreprocessorMacros>
 										<cPreprocessorMacro>_FILE_OFFSET_BITS=64</cPreprocessorMacro>
@@ -128,7 +128,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${project.parent.basedir}/libfuse3/include/fuse_lowlevel.h</headerFile>
-									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr</targetPackage>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.fuse3_lowlevel</targetPackage>
 									<headerClassName>fuse_lowlevel_h</headerClassName>
 									<cPreprocessorMacros>
 										<cPreprocessorMacro>_FILE_OFFSET_BITS=64</cPreprocessorMacro>
@@ -146,6 +146,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${linux.headerSearchPath}/errno.h</headerFile>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.errno</targetPackage>
 									<headerClassName>errno_h</headerClassName>
 									<includeConstants>
 										<includeConstant>ENOENT</includeConstant>
@@ -174,6 +175,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${linux.headerSearchPath}/sys/stat.h</headerFile>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.stat</targetPackage>
 									<headerClassName>stat_h</headerClassName>
 									<includeConstants>
 										<includeConstant>UTIME_NOW</includeConstant>
@@ -188,6 +190,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${linux.headerSearchPath}/fcntl.h</headerFile>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.fcntl</targetPackage>
 									<headerClassName>fcntl_h</headerClassName>
 									<includeConstants>
 										<includeConstant>O_RDONLY</includeConstant>
@@ -209,6 +212,7 @@
 								</goals>
 								<configuration>
 									<headerFile>${linux.headerSearchPath}/stdio.h</headerFile>
+									<targetPackage>org.cryptomator.jfuse.linux.aarch64.extr.stdio</targetPackage>
 									<headerClassName>stdio_h</headerClassName>
 									<cPreprocessorMacros>
 										<cPreprocessorMacro>_GNU_SOURCE=1</cPreprocessorMacro>
@@ -227,5 +231,4 @@
 			</build>
 		</profile>
 	</profiles>
-
-</project>
+</project>

jfuse-linux-aarch64/src/main/java/org/cryptomator/jfuse/linux/aarch64/DirFillerImpl.java

@@ -2,18 +2,17 @@
 
 import org.cryptomator.jfuse.api.DirFiller;
 import org.cryptomator.jfuse.api.Stat;
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_fill_dir_t;
-import org.cryptomator.jfuse.linux.aarch64.extr.stat;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.fuse_fill_dir_t;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.stat;
 
 import java.lang.foreign.Arena;
 import java.lang.foreign.MemorySegment;
-import java.lang.foreign.SegmentScope;
 import java.util.function.Consumer;
 
 record DirFillerImpl(MemorySegment buf, fuse_fill_dir_t callback, Arena arena) implements DirFiller {
 
 	DirFillerImpl(MemorySegment buf, MemorySegment callback, Arena arena) {
-		this(buf, fuse_fill_dir_t.ofAddress(callback, arena.scope()), arena);
+		this(buf, fuse_fill_dir_t.ofAddress(callback, arena), arena);
 	}
 
 	@Override

jfuse-linux-aarch64/src/main/java/org/cryptomator/jfuse/linux/aarch64/FileInfoImpl.java

@@ -1,11 +1,11 @@
 package org.cryptomator.jfuse.linux.aarch64;
 
 import org.cryptomator.jfuse.api.FileInfo;
-import org.cryptomator.jfuse.linux.aarch64.extr.fcntl_h;
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_file_info;
+import org.cryptomator.jfuse.linux.aarch64.extr.fcntl.fcntl_h;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.fuse_file_info;
 
+import java.lang.foreign.Arena;
 import java.lang.foreign.MemorySegment;
-import java.lang.foreign.SegmentScope;
 import java.nio.file.StandardOpenOption;
 import java.util.EnumSet;
 import java.util.Set;
@@ -22,7 +22,7 @@ record FileInfoImpl(MemorySegment segment) implements FileInfo {
 	private static final int O_SYNC = fcntl_h.O_SYNC();
 	private static final int O_DSYNC = fcntl_h.O_DSYNC();
 
-	public FileInfoImpl(MemorySegment address, SegmentScope scope) {
+	public FileInfoImpl(MemorySegment address, Arena scope) {
 		this(fuse_file_info.ofAddress(address, scope));
 	}
 

jfuse-linux-aarch64/src/main/java/org/cryptomator/jfuse/linux/aarch64/FuseArgs.java

@@ -1,7 +1,7 @@
 package org.cryptomator.jfuse.linux.aarch64;
 
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_args;
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_cmdline_opts;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.fuse_args;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3_lowlevel.fuse_cmdline_opts;
 
 import java.lang.foreign.MemorySegment;
 import java.lang.foreign.ValueLayout;
@@ -14,7 +14,7 @@ public String toString() {
 		var argc = fuse_args.argc$get(args);
 		var argv = fuse_args.argv$get(args);
 		for (int i = 0; i < argc; i++) {
-			var cString = argv.getAtIndex(ValueLayout.ADDRESS.asUnbounded(), i);
+			var cString = argv.getAtIndex(ValueLayout.ADDRESS, i).reinterpret(Long.MAX_VALUE);
 			sb.append("arg[").append(i).append("] = ").append(cString.getUtf8String(0)).append(", ");
 		}
 		sb.append("mountPoint = ").append(mountPoint().getUtf8String(0));

jfuse-linux-aarch64/src/main/java/org/cryptomator/jfuse/linux/aarch64/FuseConfigImpl.java

@@ -1,14 +1,14 @@
 package org.cryptomator.jfuse.linux.aarch64;
 
 import org.cryptomator.jfuse.api.FuseConfig;
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_config;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.fuse_config;
 
+import java.lang.foreign.Arena;
 import java.lang.foreign.MemorySegment;
-import java.lang.foreign.SegmentScope;
 
 record FuseConfigImpl(MemorySegment segment) implements FuseConfig {
 
-	public FuseConfigImpl(MemorySegment address, SegmentScope scope) {
+	public FuseConfigImpl(MemorySegment address, Arena scope) {
 		this(fuse_config.ofAddress(address, scope));
 	}
 

jfuse-linux-aarch64/src/main/java/org/cryptomator/jfuse/linux/aarch64/FuseConnInfoImpl.java

@@ -1,14 +1,14 @@
 package org.cryptomator.jfuse.linux.aarch64;
 
 import org.cryptomator.jfuse.api.FuseConnInfo;
-import org.cryptomator.jfuse.linux.aarch64.extr.fuse_conn_info;
+import org.cryptomator.jfuse.linux.aarch64.extr.fuse3.fuse_conn_info;
 
+import java.lang.foreign.Arena;
 import java.lang.foreign.MemorySegment;
-import java.lang.foreign.SegmentScope;
 
 record FuseConnInfoImpl(MemorySegment segment) implements FuseConnInfo {
 
-	public FuseConnInfoImpl(MemorySegment address, SegmentScope scope) {
+	public FuseConnInfoImpl(MemorySegment address, Arena scope) {
 		this(fuse_conn_info.ofAddress(address, scope));
 	}