#include <linux/ptrace.h> #include <linux/version.h> #include <uapi/linux/bpf.h> #include <bpf/bpf_helpers.h> struct bpf_map_def SEC("maps") my_map = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int), .value_size = sizeof(u32), .max_entries = 2, }; SEC("kprobe/sys_write") int bpf_prog1(struct pt_regs *ctx) { struct S { u64 pid; u64 cookie; } data; data.pid = bpf_get_current_pid_tgid(); data.cookie = 0x12345678; bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); return 0; } char _license[] SEC("license") = "GPL"; u32 _version SEC("version") = LINUX_VERSION_CODE;