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

fusl/src/dirent/readdir.c

Index: fusl/src/dirent/readdir.c
diff --git a/fusl/src/dirent/readdir.c b/fusl/src/dirent/readdir.c
new file mode 100644
index 0000000000000000000000000000000000000000..2cf0632c207ef2547d6dfe8b67ed23783cf151d4
--- /dev/null
+++ b/fusl/src/dirent/readdir.c
@@ -0,0 +1,28 @@
+#include <dirent.h>
+#include <errno.h>
+#include "__dirent.h"
+#include "syscall.h"
+#include "libc.h"
+
+int __getdents(int, struct dirent *, size_t);
+
+struct dirent *readdir(DIR *dir)
+{
+	struct dirent *de;
+	
+	if (dir->buf_pos >= dir->buf_end) {
+		int len = __syscall(SYS_getdents, dir->fd, dir->buf, sizeof dir->buf);
+		if (len <= 0) {
+			if (len < 0 && len != -ENOENT) errno = -len;
+			return 0;
+		}
+		dir->buf_end = len;
+		dir->buf_pos = 0;
+	}
+	de = (void *)(dir->buf + dir->buf_pos);
+	dir->buf_pos += de->d_reclen;
+	dir->tell = de->d_off;
+	return de;
+}
+
+LFS64(readdir);