Use visual studio 2019 for Linux system programming

The last article talked about how to develop and test a simple module directly under ubuntu, how to use c to operate the module?

Use visual studio 2019 for Linux system programming

First open:

Modify and install Linux tools:

 

Create a new Linux project, remotely connect to the Linux server, configure the compiler:

 

 

 Project property configuration:

 

Ubuntu system installation tools: 

 The target Linux system must install openssh-server, g++, gdb and make. Only CMake projects require ninja-build.

 

sudo apt-get install openssh-server g++ gdb make ninja-build rsync zip

 Start ssh:

sudo service ssh start

Module loading location: /sys/module

 

 Test: Remember to hit the breakpoint (otherwise you can not adjust)

 

test program: 

#include <unistd.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <stdio.h>
int main() {
	int fd = 0;
	char* hello_node = "/sys/module/day";

	/*O_RDWR只读打开,O_NDELAY非阻塞方式*/
	if ((fd = open(hello_node, O_RDONLY)) < 0) {
		printf("APP open failed %d\n", fd);
	}
	else {
		printf("APP open success\n");
	}

	close(fd);
	return 0;
}