| 1 | #include <linux/module.h> |
| 2 | #include <linux/kernel.h> |
| 3 | #include <linux/init.h> |
| 4 | #include <linux/kprobes.h> |
| 5 | |
| 6 | MODULE_LICENSE("GPL"); |
| 7 | |
| 8 | static int kph(struct kprobe *kp, struct pt_regs *regs) |
| 9 | { |
| 10 | return 0; |
| 11 | } |
| 12 | static int kpfh(struct kprobe *kp, struct pt_regs *regs, int nr) |
| 13 | { |
| 14 | printk("fault occurred on kprobes at %p(@%lx:%d)\n", kp->addr, regs->ip, nr); |
| 15 | return 0; |
| 16 | } |
| 17 | static struct kprobe kp[] = { |
| 18 | [0]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_accept"}, |
| 19 | [1]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_access"}, |
| 20 | [2]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_acct"}, |
| 21 | [3]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_add_key"}, |
| 22 | [4]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_adjtimex"}, |
| 23 | [5]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_alarm"}, |
| 24 | [6]={.pre_handler=kph, .fault_handler=kpfh, .symbol_name="sys_bdflush"}, |
| 25 | }; |
| 26 | #define NRPB 7 |
| 27 | |
| 28 | static struct kprobe *kps[NRPB]; |
| 29 | |
| 30 | int __gen_init(void) |
| 31 | { |
| 32 | int ret, i; |
| 33 | for (i=0;i<NRPB;i++) |
| 34 | kps[i]=&kp[i]; |
| 35 | printk("registering..."); |
| 36 | ret = register_kprobes(kps, NRPB); |
| 37 | if (ret) { |
| 38 | printk("failed to register kprobes\n"); |
| 39 | return ret; |
| 40 | } |
| 41 | printk("registered\n"); |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | void __gen_exit(void) |
| 46 | { |
| 47 | printk("unregistering..."); |
| 48 | unregister_kprobes(kps, NRPB); |
| 49 | printk("unregistered\n"); |
| 50 | } |
| 51 | |
| 52 | module_init(__gen_init); |
| 53 | module_exit(__gen_exit); |