- return socketcall_cp(accept4, fd, addr, len, flg, 0, 0);
+ if (!flg) return accept(fd, addr, len);
+ int ret = socketcall_cp(accept4, fd, addr, len, flg, 0, 0);
+ if (ret>=0 || (errno != ENOSYS && errno != EINVAL)) return ret;
+ ret = accept(fd, addr, len);
+ if (ret<0) return ret;
+ if (flg & SOCK_CLOEXEC)
+ __syscall(SYS_fcntl, ret, F_SETFD, FD_CLOEXEC);
+ if (flg & SOCK_NONBLOCK)
+ __syscall(SYS_fcntl, ret, F_SETFL, O_NONBLOCK);
+ return ret;