1 | #include "vmlinux.h" |
2 | #include <linux/version.h> |
3 | #include <bpf/bpf_helpers.h> |
4 | |
5 | struct { |
6 | __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); |
7 | __uint(key_size, sizeof(int)); |
8 | __uint(value_size, sizeof(u32)); |
9 | __uint(max_entries, 2); |
10 | } my_map SEC(".maps" ); |
11 | |
12 | SEC("ksyscall/write" ) |
13 | int bpf_prog1(struct pt_regs *ctx) |
14 | { |
15 | struct S { |
16 | u64 pid; |
17 | u64 cookie; |
18 | } data; |
19 | |
20 | data.pid = bpf_get_current_pid_tgid(); |
21 | data.cookie = 0x12345678; |
22 | |
23 | bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); |
24 | |
25 | return 0; |
26 | } |
27 | |
28 | char _license[] SEC("license" ) = "GPL" ; |
29 | u32 _version SEC("version" ) = LINUX_VERSION_CODE; |
30 | |