1 // SPDX-License-Identifier: GPL-2.0 2 #include <stdio.h> 3 #include <unistd.h> 4 #include <bpf/libbpf.h> 5 #include "trace_helpers.h" 6 7 int main(int ac, char **argv) 8 { 9 struct bpf_link *link = NULL; 10 struct bpf_program *prog; 11 struct bpf_object *obj; 12 char filename[256]; 13 FILE *f; 14 15 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); 16 obj = bpf_object__open_file(filename, NULL); 17 if (libbpf_get_error(obj)) { 18 fprintf(stderr, "ERROR: opening BPF object file failed\n"); 19 return 0; 20 } 21 22 prog = bpf_object__find_program_by_name(obj, "bpf_prog1"); 23 if (!prog) { 24 fprintf(stderr, "ERROR: finding a prog in obj file failed\n"); 25 goto cleanup; 26 } 27 28 /* load BPF program */ 29 if (bpf_object__load(obj)) { 30 fprintf(stderr, "ERROR: loading BPF object file failed\n"); 31 goto cleanup; 32 } 33 34 link = bpf_program__attach(prog); 35 if (libbpf_get_error(link)) { 36 fprintf(stderr, "ERROR: bpf_program__attach failed\n"); 37 link = NULL; 38 goto cleanup; 39 } 40 41 f = popen("taskset 1 ping -c5 localhost", "r"); 42 (void) f; 43 44 read_trace_pipe(); 45 46 cleanup: 47 bpf_link__destroy(link); 48 bpf_object__close(obj); 49 return 0; 50 } 51