1 // SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) 2 /* Copyright (c) 2021 Sartura 3 * Based on minimal.c by Facebook */ 4 5 #include <stdio.h> 6 #include <unistd.h> 7 #include <signal.h> 8 #include <string.h> 9 #include <errno.h> 10 #include <sys/resource.h> 11 #include <bpf/libbpf.h> 12 #include "kprobe_ksysread.skel.h" 13 14 15 static struct kprobe_ksysread_bpf *skel=NULL; 16 static void int_exit(int signo) { 17 if (skel) { 18 kprobe_ksysread_bpf__destroy(skel); 19 } 20 exit(0); 21 } 22 23 int main(int argc, char **argv) { 24 int err; 25 26 /* Open load and verify BPF application */ 27 skel = kprobe_ksysread_bpf__open_and_load(); 28 if (!skel) { 29 fprintf(stderr, "Failed to open BPF skeleton\n"); 30 return 1; 31 } 32 33 /* Attach tracepoint handler */ 34 err = kprobe_ksysread_bpf__attach(skel); 35 if (err) { 36 fprintf(stderr, "Failed to attach BPF skeleton\n"); 37 goto cleanup; 38 } 39 signal(SIGINT, int_exit); 40 signal(SIGTERM, int_exit); 41 while(1) sleep(3600); 42 43 cleanup: 44 int_exit(0); 45 return 0; 46 } 47