Method readlink

fs/subfs.cpp:137–141

            return underlayfs->symlink(oldname, newname);
        }
        virtual ssize_t readlink(const char *path, char *buf, size_t bufsiz) override
        {
            PathCat __(this, path);
            return underlayfs->readlink(path, buf, bufsiz);
        }
        virtual int link(const char *oldname, const char *newname) override
        {
            PathCat __(this, oldname);