1*84a62b44SKrister Johansen // SPDX-License-Identifier: GPL-2.0
2*84a62b44SKrister Johansen
3*84a62b44SKrister Johansen #include "vmlinux.h"
4*84a62b44SKrister Johansen #include <bpf/bpf_helpers.h>
5*84a62b44SKrister Johansen #include <bpf/bpf_tracing.h>
6*84a62b44SKrister Johansen
7*84a62b44SKrister Johansen struct {
8*84a62b44SKrister Johansen __uint(type, BPF_MAP_TYPE_ARRAY);
9*84a62b44SKrister Johansen __uint(max_entries, 8);
10*84a62b44SKrister Johansen __type(key, __u32);
11*84a62b44SKrister Johansen __type(value, __u64);
12*84a62b44SKrister Johansen } test_array SEC(".maps");
13*84a62b44SKrister Johansen
14*84a62b44SKrister Johansen unsigned int triggered;
15*84a62b44SKrister Johansen
test_cb(struct bpf_map * map,__u32 * key,__u64 * val,void * data)16*84a62b44SKrister Johansen static __u64 test_cb(struct bpf_map *map, __u32 *key, __u64 *val, void *data)
17*84a62b44SKrister Johansen {
18*84a62b44SKrister Johansen return 1;
19*84a62b44SKrister Johansen }
20*84a62b44SKrister Johansen
21*84a62b44SKrister Johansen SEC("fexit/bpf_testmod_return_ptr")
BPF_PROG(handle_fexit_ret_subprogs,int arg,struct file * ret)22*84a62b44SKrister Johansen int BPF_PROG(handle_fexit_ret_subprogs, int arg, struct file *ret)
23*84a62b44SKrister Johansen {
24*84a62b44SKrister Johansen *(volatile long *)ret;
25*84a62b44SKrister Johansen *(volatile int *)&ret->f_mode;
26*84a62b44SKrister Johansen bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
27*84a62b44SKrister Johansen triggered++;
28*84a62b44SKrister Johansen return 0;
29*84a62b44SKrister Johansen }
30*84a62b44SKrister Johansen
31*84a62b44SKrister Johansen SEC("fexit/bpf_testmod_return_ptr")
BPF_PROG(handle_fexit_ret_subprogs2,int arg,struct file * ret)32*84a62b44SKrister Johansen int BPF_PROG(handle_fexit_ret_subprogs2, int arg, struct file *ret)
33*84a62b44SKrister Johansen {
34*84a62b44SKrister Johansen *(volatile long *)ret;
35*84a62b44SKrister Johansen *(volatile int *)&ret->f_mode;
36*84a62b44SKrister Johansen bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
37*84a62b44SKrister Johansen triggered++;
38*84a62b44SKrister Johansen return 0;
39*84a62b44SKrister Johansen }
40*84a62b44SKrister Johansen
41*84a62b44SKrister Johansen SEC("fexit/bpf_testmod_return_ptr")
BPF_PROG(handle_fexit_ret_subprogs3,int arg,struct file * ret)42*84a62b44SKrister Johansen int BPF_PROG(handle_fexit_ret_subprogs3, int arg, struct file *ret)
43*84a62b44SKrister Johansen {
44*84a62b44SKrister Johansen *(volatile long *)ret;
45*84a62b44SKrister Johansen *(volatile int *)&ret->f_mode;
46*84a62b44SKrister Johansen bpf_for_each_map_elem(&test_array, test_cb, NULL, 0);
47*84a62b44SKrister Johansen triggered++;
48*84a62b44SKrister Johansen return 0;
49*84a62b44SKrister Johansen }
50*84a62b44SKrister Johansen
51*84a62b44SKrister Johansen char _license[] SEC("license") = "GPL";
52