68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/list.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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struct birthday
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{
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int day;
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int month;
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int year;
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struct list_head list;
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};
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static LIST_HEAD(birthday_list);
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/* This function is called when the module is loaded. */
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int sample_init(void)
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{
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printk(KERN_INFO "Loading Module\n");
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struct birthday *person;
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int i = 0;
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for (i = 0; i < 5; i++)
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{
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person = kmalloc(sizeof(*person), GFP_KERNEL);
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person->day = 2;
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person->month = 8 + i ;
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person->year = 1995 + i;
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INIT_LIST_HEAD(&person->list);
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list_add_tail(&person->list, &birthday_list);
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}
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list_for_each_entry(person, &birthday_list, list)
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{
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printk(KERN_INFO "Birthday: %1d/%1d/%1d\n", person->year, person->month, person->day);
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}
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printk(KERN_INFO "Module Loaded\n");
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return 0;
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}
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/* This function is called when the module is removed. */
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void sample_exit(void)
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{
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printk(KERN_INFO "Removing Module\n");
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struct birthday *person, *next;
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list_for_each_entry_safe(person, next, &birthday_list, list)
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{
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list_del(&person->list);
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kfree(person);
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}
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printk(KERN_INFO "Module Removed\n");
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}
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/* Macros for registering module entry and exit points. */
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module_init(sample_init);
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module_exit(sample_exit);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Sample Module");
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MODULE_AUTHOR("SGG"); |