如何创建类型套接字的特殊文件? [英] How to create special files of type socket?

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本文介绍了如何创建类型套接字的特殊文件?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要为kgdb-gdb远程连接创建串口套接字。

就像 mkfifo 创建一个在你的系统上的FIFO,我们如何创建套接字文件?

解决方案

在@cidermonkey接受的答案中的链接是伟大的,如果你试图编写一个使用套接字的应用程序。如果你真的想创建一个,你可以在python中完成:

 〜]#python -cimport socket as s ; sock = s.socket(s.AF_UNIX); sock.bind('/ tmp / somesocket')
〜]#ll / tmp / somesocket
srwxr-xr-x。 1 root root 0 Mar 3 19:30 / tmp / somesocket

用一个小小的C程序,例如,将以下内容保存到 create-a-socket.c

  #include< fcntl.h> 
#include< sys / un.h>
#include< sys / socket.h>
#include< sys / stat.h>
#include< sys / types.h>
#include< unistd.h>

int main(int argc,char ** argv)
{
//下面这行代表套接字路径为第一个参数
char * mysocketpath = argv [1];
//或者,你可以评论并静态设置:
// char * mysocketpath =/ tmp / mysock;
struct sockaddr_un namesock;
int fd;
namesock.sun_family = AF_UNIX;
strncpy(namesock.sun_path,(char *)mysocketpath,sizeof(namesock.sun_path));
fd = socket(AF_UNIX,SOCK_DGRAM,0);
bind(fd,(struct sockaddr *)& namesock,sizeof(struct sockaddr_un));
close(fd);
返回0;
}

然后安装gcc,编译它和ta-da:

 〜]#gcc -o create-a-socket create-a-socket.c 
〜]#./create-a -socket mysock
〜]#ll mysock
srwxr-xr-x。 1 root root 0 Mar 3 17:45 mysock


I need to create serial port socket for kgdb-gdb remote connection.

Just as mkfifo creates a FIFO on your system, how can we create socket files?

解决方案

The link in the accepted answer by @cidermonkey is great if you're trying to write an app that uses sockets. If you literally just want to create one you can do it in python:

~]# python -c "import socket as s; sock = s.socket(s.AF_UNIX); sock.bind('/tmp/somesocket')"
~]# ll /tmp/somesocket 
srwxr-xr-x. 1 root root 0 Mar  3 19:30 /tmp/somesocket

Or with a tiny C program, e.g., save the following to create-a-socket.c:

#include <fcntl.h>
#include <sys/un.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

int main(int argc, char **argv)
{
    // The following line expects the socket path to be first argument
    char * mysocketpath = argv[1];
    // Alternatively, you could comment that and set it statically:
    //char * mysocketpath = "/tmp/mysock";
    struct sockaddr_un namesock;
    int fd;
    namesock.sun_family = AF_UNIX;
    strncpy(namesock.sun_path, (char *)mysocketpath, sizeof(namesock.sun_path));
    fd = socket(AF_UNIX, SOCK_DGRAM, 0);
    bind(fd, (struct sockaddr *) &namesock, sizeof(struct sockaddr_un));
    close(fd);
    return 0;
}

Then install gcc, compile it, and ta-da:

~]# gcc -o create-a-socket create-a-socket.c
~]# ./create-a-socket mysock
~]# ll mysock
srwxr-xr-x. 1 root root 0 Mar  3 17:45 mysock

这篇关于如何创建类型套接字的特殊文件?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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