Compile the driver in Ubuntu11.04

In Ubuntu11.04, you can directly write the driver and compile it. _______________________________________________________________________ Hello. c # include "linux/init. h" # include "linux/module. h" staticinthello_init (void) {printk (KE

In Ubuntu 11.04, you can directly write the driver and compile it.

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Hello. c

# Include "linux/init. h"
# Include "linux/module. h"

Static int hello_init (void)
{
Printk (KERN_INFO "Hello World linux_driver_module \ n ");
Return 0;
}

Static void hello_exit (void)
{
Printk (KERN_INFO "Goodbey linux_driver_module \ n ");
}

Module_init (hello_init );
Module_exit (hello_exit );

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Makefile:

# Makefile 2.6
Ifneq ($ (KERNELRELEASE ),)
# Kbuild syntax dependency relationship of files and target modules are listed here.
Mymodule-objs: = hello. o
Obj-m: = hello. o
Else
PWD: = $ (shell pwd)
KVER? = $ (Shell uname-r)
KDIR: =/lib/modules/$ (KVER)/build
All:

$ (MAKE)-C $ (KDIR) M = $ (PWD)

Clean:

Rm-rf. *. com *. o *. mod. c *. ko. tmp_versions

Endif

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Steps:

1. sudo make all;

2. Generate the hello. ko File

3. insmod hello. ko

4. lsmod. You can see the hello module.

5. rmmod hello. ko