Add a "fork" of musl as //fusl.

fusl/include/sys/xattr.h

Index: fusl/include/sys/xattr.h
diff --git a/fusl/include/sys/xattr.h b/fusl/include/sys/xattr.h
new file mode 100644
index 0000000000000000000000000000000000000000..f926493cbca804f0c53d063fedd8761a46f397a2
--- /dev/null
+++ b/fusl/include/sys/xattr.h
@@ -0,0 +1,30 @@
+#ifndef	_SYS_XATTR_H
+#define	_SYS_XATTR_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define __NEED_ssize_t
+#define __NEED_size_t
+#include <bits/alltypes.h>
+
+#define XATTR_CREATE 1
+#define XATTR_REPLACE 2
+
+ssize_t getxattr(const char *, const char *, void *, size_t);
+ssize_t lgetxattr(const char *, const char *, void *, size_t);
+ssize_t fgetxattr(int filedes, const char *, void *, size_t);
+ssize_t listxattr(const char *, char *, size_t);
+ssize_t llistxattr(const char *, char *, size_t);
+ssize_t flistxattr(int filedes, char *, size_t);
+int setxattr(const char *, const char *, const void *, size_t, int);
+int lsetxattr(const char *, const char *, const void *, size_t, int);
+int fsetxattr(int, const char *, const void *, size_t, int);
+int removexattr(const char *, const char *);
+int lremovexattr(const char *, const char *);
+int fremovexattr(int, const char *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif