| Alexei Starovoitov | 3911169 | 2015-10-20 20:02:35 -0700 | [diff] [blame^] | 1 | #include <linux/ptrace.h> |
| 2 | #include <linux/version.h> |
| 3 | #include <uapi/linux/bpf.h> |
| 4 | #include "bpf_helpers.h" |
| 5 | |
| 6 | struct bpf_map_def SEC("maps") my_map = { |
| 7 | .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, |
| 8 | .key_size = sizeof(int), |
| 9 | .value_size = sizeof(u32), |
| 10 | .max_entries = 2, |
| 11 | }; |
| 12 | |
| 13 | SEC("kprobe/sys_write") |
| 14 | int bpf_prog1(struct pt_regs *ctx) |
| 15 | { |
| 16 | struct S { |
| 17 | u64 pid; |
| 18 | u64 cookie; |
| 19 | } data; |
| 20 | |
| 21 | memset(&data, 0, sizeof(data)); |
| 22 | data.pid = bpf_get_current_pid_tgid(); |
| 23 | data.cookie = 0x12345678; |
| 24 | |
| 25 | bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); |
| 26 | |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | char _license[] SEC("license") = "GPL"; |
| 31 | u32 _version SEC("version") = LINUX_VERSION_CODE; |