65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
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#include <linux/module.h> /* all kernel modules need this */
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#include <linux/init.h> /* provides initialization routines */
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#include <linux/kallsyms.h>
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static char __initdata hellomsg[] = KERN_NOTICE "Hello, Kernel, I'm in\n";
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static char __exitdata byemsg[] = KERN_NOTICE "Bye, I'm out\n";
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static int print_hello(void)
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{
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unsigned long i;
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char *symbol_name;
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printk(hellomsg);
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symbol_name = "free_pages";
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printk("looking up '%s'\n", symbol_name);
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i = kallsyms_lookup_name(symbol_name);
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printk("%s 0x%lx\n", symbol_name, i);
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return 0;
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}
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int fib(int times, int n1, int n2)
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{
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int i = 0;
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int prev = n1;
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int curr = n2;
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int next = 0;
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while (i < times)
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{
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next = (prev + curr);
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prev = curr;
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curr = next;
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i++;
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}
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return next;
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}
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static int __init start_hello_world(void)
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{
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int f_int;
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Vincent Batts <vbatts@hashbangbash.com>");
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MODULE_DESCRIPTION("i am just reading headers");
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MODULE_VERSION("1.0");
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print_hello();
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f_int = fib(10000000, 0, 1);
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return 0;
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}
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static void __exit go_away(void)
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{
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printk(byemsg);
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}
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module_init(start_hello_world);
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module_exit(go_away);
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// vim:set shiftwidth=4 softtabstop=4 expandtab:
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