Question

我试图在Linux内核中添加模块在模块入口点，创建一个包含五个struct birthday的链表元素然后删除此模块当我编译下一个代码时，屏幕显示此消息（没有指定目标，也没有找到makefile。停止）请帮帮我什么错误？这个消息意味着什么以及我如何解决问题＃包括＃包括＃包括＃包括 #include

#define NUM_OF_PERSON    5

/* Example struct we will use. */
typedef struct _birthday {
    int day;
    int month;
    int year;
    struct list_head list;
}birthday;

/* Declare and init the head of the linked list. */
LIST_HEAD(birthday_list);

/* This function is called when the module is loaded. */
int birthdayList_init(void)
{
           printk(KERN_INFO “Loading Module\n”);

    /* Allocate 5 birthdays from kernel */
    birthday *person;
    int i = 0;
    for(i = 0; i < NUM_OF_PERSON; i++)
    {
        /* Request malloc to the kernel. */
        person = kmalloc(sizeof(*person), GFP_KERNEL);
        /* Assign value to the struct. */
        person->day = i+1;
        person->month = i+1;
        person->year = i+1;
        /* Init the list within the struct. */
        INIT_LIST_HEAD(&person->list);
        /* Add this struct to the tail of the list. */
        list_add_tail(&person->list, &birthday_list);
    }

    printk(KERN_INFO “Display the list:\n”);

    /* Go thru the list and print. */
    birthday *ptr;
    list_for_each_entry(ptr, &birthday_list, list)
    {
        printk(KERN_INFO “day: %d, month: %d, year: %d\n”,
                ptr->day,
                ptr->month,
                ptr->year);
    }

    printk(KERN_INFO “Display done\n”);

           return 0;
}

/* This function is called when the module is removed. */
void birthdayList_exit(void)
{
    printk(KERN_INFO “Removing Module\n”);

    /* Go thru the list and free the memory. */
    birthday *ptr, *next;
    list_for_each_entry_safe(ptr, next, &birthday_list, list)
    {
        printk(KERN_INFO “Removing – day: %d, month: %d, year: %d\n”,
                ptr->day,
                ptr->month,
                ptr->year);
        list_del(&ptr->list);
        kfree(ptr);
    }

    printk(KERN_INFO “Memory free done\n”);
}

/* Macros for registering module entry and exit points. */
module_init( birthdayList_init );
module_exit( birthdayList_exit );

MODULE_LICENSE(“GPL”);
MODULE_DESCRIPTION(“BirthdayList Module”);
MODULE_AUTHOR(“daveti”);

在linux kernal中添加模块

0 个答案: