runtime/native: move remaining java.lang.System methods to JNI

Author: Serial-ATA

jni/src/env/array.rs

@@ -141,7 +141,7 @@ impl super::JniEnv {
 		&self,
 		array: JByteArray,
 		start: jsize,
-		buf: &[jbyte],
+		buf: &mut [jbyte],
 	) -> Result<()> {
 		unsafe {
 			let invoke_interface = self.as_native_interface();
@@ -150,7 +150,7 @@ impl super::JniEnv {
 				array.raw(),
 				start,
 				buf.len() as jsize,
-				buf.as_ptr(),
+				buf.as_mut_ptr(),
 			);
 		}
 

jni/sys/src/lib.rs

@@ -2002,63 +2002,63 @@ pub struct JNINativeInterface_ {
 			array: jbooleanArray,
 			start: jsize,
 			l: jsize,
-			buf: *const jboolean,
+			buf: *mut jboolean,
 		)),
 
 	pub SetByteArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jbyteArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jbyte,
+			buf: *mut jbyte,
 		)),
 
 	pub SetCharArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jcharArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jchar,
+			buf: *mut jchar,
 		)),
 
 	pub SetShortArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jshortArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jshort,
+			buf: *mut jshort,
 		)),
 
 	pub SetIntArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jintArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jint,
+			buf: *mut jint,
 		)),
 
 	pub SetLongArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jlongArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jlong,
+			buf: *mut jlong,
 		)),
 
 	pub SetFloatArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jfloatArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jfloat,
+			buf: *mut jfloat,
 		)),
 
 	pub SetDoubleArrayRegion: jni_system_fn!((
 			env: *mut JNIEnv,
 			array: jdoubleArray,
 			start: jsize,
 			len: jsize,
-			buf: *const jdouble,
+			buf: *mut jdouble,
 		)),
 
 	/// Registers native methods with the class specified by the `clazz` argument.

native/nio/src/fs/unix/UnixNativeDispatcher.rs

@@ -128,14 +128,15 @@ pub extern "system" fn Java_sun_nio_fs_UnixNativeDispatcher_getcwd(
 		todo!("Throw sun/util/UnixException")
 	}
 
+	let cwd_len;
 	unsafe {
-		let cwd_len = libc::strlen(cwd) + 1;
+		cwd_len = libc::strlen(cwd) + 1;
 		buf.set_len(cwd_len);
 	}
 
-	let buf_without_terminator = &buf[..buf.len() - 1];
+	let buf_without_terminator = &mut buf[..cwd_len - 1];
 
-	let Ok(byte_array) = env.new_byte_array(buf_without_terminator.len() as jsize) else {
+	let Ok(byte_array) = env.new_byte_array((cwd_len - 1) as jsize) else {
 		return None;
 	};