insmod

How to determine if a specific module is loaded in linux kernel

核能气质少年 提交于 2019-12-02 20:12:10
I am just curious is there any way to determine if a particular module is loaded/installed. $lsmod lists all modules (device driver loaded). Is there any way to check or a command that returns true/false boolean output if a module name is polled. for eg. if keyboard.o exists return true else false. i need this tip to complete my driver auto refresh program. PS: tried modinfo. i am using busybox client in my test DUT so can you give some alternatives other than modinfo ? johnshen64 not sure if modinfo modname and checking $? will work for you, just a suggestion. /tmp$ sudo modinfo e1000 /tmp$

内核模块编程之模块工具的使用及区别

自作多情 提交于 2019-12-02 06:36:48
[摘要]:本文主要介绍了在内核模块中,如何使用模块工具加载模块驱动、卸载模块驱动、显示已经加载的内核模块信息,以及如何通过模块工具查看内核模块之间的依赖关系、以及如何查看模块的附加信息。并讲解了insmod和modprobe的区别以及rmmod和modprobe的区别。 一..insmod 1.功能: 用来加载内核模块。 2.使用方法: insmod module_name.ko 如果模块不在当前目录,需要给出模块的具体路径名: insmod /home/jibo/helloworld/helloworld.ko 二.modprobe 1.功能: 主要用来装载内核模块到运行的内核中,也可以结合参数执行一些其它功能。 2.使用方法: modprobe module_name 直接跟内核模块名,不用加具体的路径信息。 note:insmod和modprobe又有什么相同点和不同点呢。 (1)相同点: 在Linux中,modprobe和insmod都可以用来加载module。 (2)区别: 1>依赖关系 modprobe可以解决load modue时的依赖关系,比如load moduleA就必须先load moduleB之类的,它是通过/lib/modules/<kernel-version>/modules.dep文件来查找依赖关系的,该依赖文件是通过depmod生成的

How do I configure modprobe to find my module?

邮差的信 提交于 2019-11-28 15:43:25
I'm trying to get a kernel module to load at boot. If I run insmod /path/to/module.ko , it works fine. But this has to be repeated every time I reboot. If I run modprobe /path/to/module.ko , it can't find the module. I know modprobe uses a configuration file, but I can't get it to load the module even after adding /path/to/module.ko to /etc/modules. What is the proper configuration? You can make a symbolic link of your module to the standard path, so depmod will see it and you'll be able load it as any other module. sudo ln -s /path/to/module.ko /lib/modules/`uname -r` sudo depmod -a sudo

Driver code in kernel module doesn't execute?

核能气质少年 提交于 2019-11-27 06:16:14
问题 Why this kernel module doesn't do anything when i load it? #include <linux/init.h> #include <linux/module.h> #include <linux/platform_device.h> #define DEVICE_NAME "hello-1.00.a" #define DRIVER_NAME "hello" MODULE_LICENSE("Dual BSD/GPL"); static int hello_init(struct platform_device *pdev){ printk(KERN_ALERT "Hello, world\n"); return 0; } static int hello_exit(struct platform_device *pdev){ printk(KERN_ALERT "Goodbye, cruel world\n"); return 0; } static const struct of_device_id myled_of