1 #include <linux/ptrace.h> 2 #include <linux/version.h> 3 #include <uapi/linux/bpf.h> 4 #include <bpf/bpf_helpers.h> 5 #include "trace_common.h" 6 7 struct { 8 __uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY); 9 __uint(key_size, sizeof(int)); 10 __uint(value_size, sizeof(u32)); 11 __uint(max_entries, 2); 12 } my_map SEC(".maps"); 13 SYSCALL(sys_write)14SEC("kprobe/" SYSCALL(sys_write)) 15 int bpf_prog1(struct pt_regs *ctx) 16 { 17 struct S { 18 u64 pid; 19 u64 cookie; 20 } data; 21 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; 32