Index: libcfa/src/concurrency/iocall.cfa
===================================================================
--- libcfa/src/concurrency/iocall.cfa	(revision f5d4f62473b3290e384f1794e2ea13c7ed5a1ac9)
+++ libcfa/src/concurrency/iocall.cfa	(revision 519f11c3bd79f925ace2b671bf682be5b31bea6f)
@@ -345,4 +345,17 @@
 }
 
+int cfa_statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf) {
+	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_STATX)
+		return syscall( __NR_statx, dirfd, pathname, flags, mask, statxbuf );
+	#else
+		__submit_prelude
+
+		(*sqe){ IORING_OP_STATX, dirfd, pathname, mask, (uint64_t)statxbuf };
+		sqe->flags = flags;
+
+		__submit_wait
+	#endif
+}
+
 ssize_t cfa_read(int fd, void *buf, size_t count) {
 	#if !defined(HAVE_LINUX_IO_URING_H) || !defined(IORING_OP_READ)
@@ -396,8 +409,4 @@
 		__submit_wait
 	#endif
-}
-
-ssize_t cfa_sendfile(int out_fd, int in_fd, off_t *offset, size_t count) {
-	return cfa_splice(in_fd, offset, out_fd, 0p, count, 0);
 }
 
Index: libcfa/src/concurrency/iofwd.hfa
===================================================================
--- libcfa/src/concurrency/iofwd.hfa	(revision f5d4f62473b3290e384f1794e2ea13c7ed5a1ac9)
+++ libcfa/src/concurrency/iofwd.hfa	(revision 519f11c3bd79f925ace2b671bf682be5b31bea6f)
@@ -16,7 +16,14 @@
 #pragma once
 
+#include <unistd.h>
 extern "C" {
 	#include <sys/types.h>
 }
+#include "bits/defs.hfa"
+
+struct iovec;
+struct msghdr;
+struct sockaddr;
+struct statx;
 
 extern ssize_t cfa_preadv2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
@@ -40,5 +47,4 @@
 extern ssize_t cfa_splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out, size_t len, unsigned int flags);
 extern ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags);
-extern ssize_t cfa_sendfile(int out_fd, int in_fd, off_t *offset, size_t count);
 
 //-----------------------------------------------------------------------------
Index: libcfa/src/concurrency/mutex.cfa
===================================================================
--- libcfa/src/concurrency/mutex.cfa	(revision f5d4f62473b3290e384f1794e2ea13c7ed5a1ac9)
+++ libcfa/src/concurrency/mutex.cfa	(revision 519f11c3bd79f925ace2b671bf682be5b31bea6f)
@@ -30,4 +30,5 @@
 	this.lock{};
 	this.blocked_threads{};
+	this.is_locked = false;
 }