diff options
Diffstat (limited to 'samples/bpf/test_current_task_under_cgroup_user.c')
-rw-r--r-- | samples/bpf/test_current_task_under_cgroup_user.c | 52 |
1 files changed, 42 insertions, 10 deletions
diff --git a/samples/bpf/test_current_task_under_cgroup_user.c b/samples/bpf/test_current_task_under_cgroup_user.c index 06e9f8ce42e2..ac251a417f45 100644 --- a/samples/bpf/test_current_task_under_cgroup_user.c +++ b/samples/bpf/test_current_task_under_cgroup_user.c @@ -4,10 +4,9 @@ #define _GNU_SOURCE #include <stdio.h> -#include <linux/bpf.h> #include <unistd.h> #include <bpf/bpf.h> -#include "bpf_load.h" +#include <bpf/libbpf.h> #include "cgroup_helpers.h" #define CGROUP_PATH "/my-cgroup" @@ -15,13 +14,44 @@ int main(int argc, char **argv) { pid_t remote_pid, local_pid = getpid(); - int cg2, idx = 0, rc = 0; + struct bpf_link *link = NULL; + struct bpf_program *prog; + int cg2, idx = 0, rc = 1; + struct bpf_object *obj; char filename[256]; + int map_fd[2]; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); - if (load_bpf_file(filename)) { - printf("%s", bpf_log_buf); - return 1; + obj = bpf_object__open_file(filename, NULL); + if (libbpf_get_error(obj)) { + fprintf(stderr, "ERROR: opening BPF object file failed\n"); + return 0; + } + + prog = bpf_object__find_program_by_name(obj, "bpf_prog1"); + if (!prog) { + printf("finding a prog in obj file failed\n"); + goto cleanup; + } + + /* load BPF program */ + if (bpf_object__load(obj)) { + fprintf(stderr, "ERROR: loading BPF object file failed\n"); + goto cleanup; + } + + map_fd[0] = bpf_object__find_map_fd_by_name(obj, "cgroup_map"); + map_fd[1] = bpf_object__find_map_fd_by_name(obj, "perf_map"); + if (map_fd[0] < 0 || map_fd[1] < 0) { + fprintf(stderr, "ERROR: finding a map in obj file failed\n"); + goto cleanup; + } + + link = bpf_program__attach(prog); + if (libbpf_get_error(link)) { + fprintf(stderr, "ERROR: bpf_program__attach failed\n"); + link = NULL; + goto cleanup; } if (setup_cgroup_environment()) @@ -70,12 +100,14 @@ int main(int argc, char **argv) goto err; } - goto out; -err: - rc = 1; + rc = 0; -out: +err: close(cg2); cleanup_cgroup_environment(); + +cleanup: + bpf_link__destroy(link); + bpf_object__close(obj); return rc; } |