什么时候bind（）上的错误会发生？

Question

从man bind

中获取的错误

    ENOTSOCK // sockfd is a descriptor for a file, not a socket. The following errors are specific to UNIX domain (AF_UNIX) sockets:
    EFAULT // addr points outside the user's accessible address space.
    ELOOP // Too many symbolic links were encountered in resolving addr.
    ENOENT // The file does not exist.
    ENOTDIR // A component of the path prefix is not a directory.
    EROFS// The socket inode would reside on a read-only file system.

尤其是当ELOOP，ENOENT，ENOTDIR，EROFS发生时我无法理解。这是否与某些特殊文件系统有关，如nfs等等？

Answer 1

请记住，套接字和bind不仅可用于网络通信。请参阅示例Unix domain sockets，它们被绑定为文件系统中的文件。

它甚至出现在你自己引用的错误列表中：

  

以下错误特定于UNIX域（AF_UNIX）套接字