diff options
Diffstat (limited to 'tools/testing/selftests/bpf/get_cgroup_id_user.c')
| -rw-r--r-- | tools/testing/selftests/bpf/get_cgroup_id_user.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/get_cgroup_id_user.c b/tools/testing/selftests/bpf/get_cgroup_id_user.c index ea19a42e5894..e8da7b39158d 100644 --- a/tools/testing/selftests/bpf/get_cgroup_id_user.c +++ b/tools/testing/selftests/bpf/get_cgroup_id_user.c @@ -50,13 +50,13 @@ int main(int argc, char **argv) const char *probe_name = "syscalls/sys_enter_nanosleep"; const char *file = "get_cgroup_id_kern.o"; int err, bytes, efd, prog_fd, pmu_fd; + int cgroup_fd, cgidmap_fd, pidmap_fd; struct perf_event_attr attr = {}; - int cgroup_fd, cgidmap_fd; struct bpf_object *obj; __u64 kcgid = 0, ucgid; + __u32 key = 0, pid; int exit_code = 1; char buf[256]; - __u32 key = 0; err = setup_cgroup_environment(); if (CHECK(err, "setup_cgroup_environment", "err %d errno %d\n", err, @@ -81,6 +81,14 @@ int main(int argc, char **argv) cgidmap_fd, errno)) goto close_prog; + pidmap_fd = bpf_find_map(__func__, obj, "pidmap"); + if (CHECK(pidmap_fd < 0, "bpf_find_map", "err %d errno %d\n", + pidmap_fd, errno)) + goto close_prog; + + pid = getpid(); + bpf_map_update_elem(pidmap_fd, &key, &pid, 0); + snprintf(buf, sizeof(buf), "/sys/kernel/debug/tracing/events/%s/id", probe_name); efd = open(buf, O_RDONLY, 0); |