太难了

tcpip/link/rawfile/blockingpoll_unsafe.go

@@ -0,0 +1,12 @@
+package rawfile
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func blockingPoll(fds *pollEvent, nfds int, timeout int64) (int, syscall.Errno) {
+	n, _, e := syscall.Syscall(syscall.SYS_POLL,
+		uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(timeout))
+	return int(n), e
+}