linux - 界面关闭时未删除 socat 设备文件

Question

我正在使用 socat 版本 1.7.3.2 从 VLAN 以太网设备创建字符设备以进行通信。我使用以下命令创 build 备:

socat INTERFACE:wwan0.vlan_dev1,type=2 PTY,mode=0777,rawer,link="/dev/ser_vlan0" &

它将文件创建为:

/dev/ser_vlan0 -> /dev/pts/22

即使在 wwan0 设备被移除后，文件 /dev/ser_vlan0 和 /dev/pts/22 仍然存在。

有没有办法在 wwan0 不再存在时自动删除这些文件？

Answer 1

来自 socat 的 OPTIONS文档:

-t <超时>:

When one channel has reached EOF, the write part of the other channel is shut down. Then, socat waits seconds before terminating. Default is 0.5 seconds. This timeout only applies to addresses where write and read part can be closed independently. When during the timeout interval the read part gives EOF, socat terminates without awaiting the timeout.

您需要将超时设置为0。