bpf: Enable retrival of pid/tgid/comm from bpf cgroup hooks

We already have the bpf_get_current_uid_gid() helper enabled, and
given we now have perf event RB output available for connect(),
sendmsg(), recvmsg() and bind-related hooks, add a trivial change
to enable bpf_get_current_pid_tgid() and bpf_get_current_comm()
as well.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/18744744ed93c06343be8b41edcfd858706f39d7.1585323121.git.daniel@iogearbox.net

diff --git a/net/core/filter.c b/net/core/filter.c
index 5cec3ac9e3dd837fa7066ef1792a0304d3fc8441..bb4a196c88096c4328c99e10f7d90f624bed885d 100644 (file)
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -6018,6 +6018,10 @@ sock_filter_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
                return &bpf_get_netns_cookie_sock_proto;
        case BPF_FUNC_perf_event_output:
                return &bpf_event_output_data_proto;
+       case BPF_FUNC_get_current_pid_tgid:
+               return &bpf_get_current_pid_tgid_proto;
+       case BPF_FUNC_get_current_comm:
+               return &bpf_get_current_comm_proto;
 #ifdef CONFIG_CGROUPS
        case BPF_FUNC_get_current_cgroup_id:
                return &bpf_get_current_cgroup_id_proto;
@@ -6058,6 +6062,10 @@ sock_addr_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
                return &bpf_get_local_storage_proto;
        case BPF_FUNC_perf_event_output:
                return &bpf_event_output_data_proto;
+       case BPF_FUNC_get_current_pid_tgid:
+               return &bpf_get_current_pid_tgid_proto;
+       case BPF_FUNC_get_current_comm:
+               return &bpf_get_current_comm_proto;
 #ifdef CONFIG_CGROUPS
        case BPF_FUNC_get_current_cgroup_id:
                return &bpf_get_current_cgroup_id_proto;