From 8b3cba987e6d9464bb533d957de923f891b57bf8 Mon Sep 17 00:00:00 2001 From: Daan De Meyer Date: Wed, 11 Oct 2023 20:51:08 +0200 Subject: [PATCH] bpftool: Add support for cgroup unix socket address hooks Add the necessary plumbing to hook up the new cgroup unix sockaddr hooks into bpftool. Signed-off-by: Daan De Meyer Acked-by: Quentin Monnet Link: https://lore.kernel.org/r/20231011185113.140426-7-daan.j.demeyer@gmail.com Signed-off-by: Martin KaFai Lau --- .../bpf/bpftool/Documentation/bpftool-cgroup.rst | 16 +++++++++++++--- tools/bpf/bpftool/Documentation/bpftool-prog.rst | 8 +++++--- tools/bpf/bpftool/bash-completion/bpftool | 14 +++++++------- tools/bpf/bpftool/cgroup.c | 16 +++++++++------- tools/bpf/bpftool/prog.c | 7 ++++--- 5 files changed, 38 insertions(+), 23 deletions(-) diff --git a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst index bd015ec9847b..2ce900f66d6e 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst @@ -36,11 +36,14 @@ CGROUP COMMANDS | **cgroup_device** | **cgroup_inet4_bind** | **cgroup_inet6_bind** | | **cgroup_inet4_post_bind** | **cgroup_inet6_post_bind** | | **cgroup_inet4_connect** | **cgroup_inet6_connect** | -| **cgroup_inet4_getpeername** | **cgroup_inet6_getpeername** | +| **cgroup_unix_connect** | **cgroup_inet4_getpeername** | +| **cgroup_inet6_getpeername** | **cgroup_unix_getpeername** | | **cgroup_inet4_getsockname** | **cgroup_inet6_getsockname** | -| **cgroup_udp4_sendmsg** | **cgroup_udp6_sendmsg** | +| **cgroup_unix_getsockname** | **cgroup_udp4_sendmsg** | +| **cgroup_udp6_sendmsg** | **cgroup_unix_sendmsg** | | **cgroup_udp4_recvmsg** | **cgroup_udp6_recvmsg** | -| **cgroup_sysctl** | **cgroup_getsockopt** | **cgroup_setsockopt** | +| **cgroup_unix_recvmsg** | **cgroup_sysctl** | +| **cgroup_getsockopt** | **cgroup_setsockopt** | | **cgroup_inet_sock_release** } | *ATTACH_FLAGS* := { **multi** | **override** } @@ -102,21 +105,28 @@ DESCRIPTION **post_bind6** return from bind(2) for an inet6 socket (since 4.17); **connect4** call to connect(2) for an inet4 socket (since 4.17); **connect6** call to connect(2) for an inet6 socket (since 4.17); + **connect_unix** call to connect(2) for a unix socket (since 6.7); **sendmsg4** call to sendto(2), sendmsg(2), sendmmsg(2) for an unconnected udp4 socket (since 4.18); **sendmsg6** call to sendto(2), sendmsg(2), sendmmsg(2) for an unconnected udp6 socket (since 4.18); + **sendmsg_unix** call to sendto(2), sendmsg(2), sendmmsg(2) for + an unconnected unix socket (since 6.7); **recvmsg4** call to recvfrom(2), recvmsg(2), recvmmsg(2) for an unconnected udp4 socket (since 5.2); **recvmsg6** call to recvfrom(2), recvmsg(2), recvmmsg(2) for an unconnected udp6 socket (since 5.2); + **recvmsg_unix** call to recvfrom(2), recvmsg(2), recvmmsg(2) for + an unconnected unix socket (since 6.7); **sysctl** sysctl access (since 5.2); **getsockopt** call to getsockopt (since 5.3); **setsockopt** call to setsockopt (since 5.3); **getpeername4** call to getpeername(2) for an inet4 socket (since 5.8); **getpeername6** call to getpeername(2) for an inet6 socket (since 5.8); + **getpeername_unix** call to getpeername(2) for a unix socket (since 6.7); **getsockname4** call to getsockname(2) for an inet4 socket (since 5.8); **getsockname6** call to getsockname(2) for an inet6 socket (since 5.8). + **getsockname_unix** call to getsockname(2) for a unix socket (since 6.7); **sock_release** closing an userspace inet socket (since 5.9). **bpftool cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG* diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst index dcae81bd27ed..58e6a5b10ef7 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst @@ -47,9 +47,11 @@ PROG COMMANDS | **cgroup/sock** | **cgroup/dev** | **lwt_in** | **lwt_out** | **lwt_xmit** | | **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** | | **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** | -| **cgroup/connect4** | **cgroup/connect6** | **cgroup/getpeername4** | **cgroup/getpeername6** | -| **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** | -| **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/sysctl** | +| **cgroup/connect4** | **cgroup/connect6** | **cgroup/connect_unix** | +| **cgroup/getpeername4** | **cgroup/getpeername6** | **cgroup/getpeername_unix** | +| **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/getsockname_unix** | +| **cgroup/sendmsg4** | **cgroup/sendmsg6** | **cgroup/sendmsg_unix** | +| **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/recvmsg_unix** | **cgroup/sysctl** | | **cgroup/getsockopt** | **cgroup/setsockopt** | **cgroup/sock_release** | | **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup** | } diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool index 085bf18f3659..6e4f7ce6bc01 100644 --- a/tools/bpf/bpftool/bash-completion/bpftool +++ b/tools/bpf/bpftool/bash-completion/bpftool @@ -480,13 +480,13 @@ _bpftool() action tracepoint raw_tracepoint \ xdp perf_event cgroup/skb cgroup/sock \ cgroup/dev lwt_in lwt_out lwt_xmit \ - lwt_seg6local sockops sk_skb sk_msg \ - lirc_mode2 cgroup/bind4 cgroup/bind6 \ - cgroup/connect4 cgroup/connect6 \ - cgroup/getpeername4 cgroup/getpeername6 \ - cgroup/getsockname4 cgroup/getsockname6 \ - cgroup/sendmsg4 cgroup/sendmsg6 \ - cgroup/recvmsg4 cgroup/recvmsg6 \ + lwt_seg6local sockops sk_skb sk_msg lirc_mode2 \ + cgroup/bind4 cgroup/bind6 \ + cgroup/connect4 cgroup/connect6 cgroup/connect_unix \ + cgroup/getpeername4 cgroup/getpeername6 cgroup/getpeername_unix \ + cgroup/getsockname4 cgroup/getsockname6 cgroup/getsockname_unix \ + cgroup/sendmsg4 cgroup/sendmsg6 cgroup/sendmsg_unix \ + cgroup/recvmsg4 cgroup/recvmsg6 cgroup/recvmsg_unix \ cgroup/post_bind4 cgroup/post_bind6 \ cgroup/sysctl cgroup/getsockopt \ cgroup/setsockopt cgroup/sock_release struct_ops \ diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c index ac846b0805b4..af6898c0f388 100644 --- a/tools/bpf/bpftool/cgroup.c +++ b/tools/bpf/bpftool/cgroup.c @@ -28,13 +28,15 @@ " cgroup_device | cgroup_inet4_bind |\n" \ " cgroup_inet6_bind | cgroup_inet4_post_bind |\n" \ " cgroup_inet6_post_bind | cgroup_inet4_connect |\n" \ - " cgroup_inet6_connect | cgroup_inet4_getpeername |\n" \ - " cgroup_inet6_getpeername | cgroup_inet4_getsockname |\n" \ - " cgroup_inet6_getsockname | cgroup_udp4_sendmsg |\n" \ - " cgroup_udp6_sendmsg | cgroup_udp4_recvmsg |\n" \ - " cgroup_udp6_recvmsg | cgroup_sysctl |\n" \ - " cgroup_getsockopt | cgroup_setsockopt |\n" \ - " cgroup_inet_sock_release }" + " cgroup_inet6_connect | cgroup_unix_connect |\n" \ + " cgroup_inet4_getpeername | cgroup_inet6_getpeername |\n" \ + " cgroup_unix_getpeername | cgroup_inet4_getsockname |\n" \ + " cgroup_inet6_getsockname | cgroup_unix_getsockname |\n" \ + " cgroup_udp4_sendmsg | cgroup_udp6_sendmsg |\n" \ + " cgroup_unix_sendmsg | cgroup_udp4_recvmsg |\n" \ + " cgroup_udp6_recvmsg | cgroup_unix_recvmsg |\n" \ + " cgroup_sysctl | cgroup_getsockopt |\n" \ + " cgroup_setsockopt | cgroup_inet_sock_release }" static unsigned int query_flags; static struct btf *btf_vmlinux; diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index 8443a149dd17..7ec4f5671e7a 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -2475,9 +2475,10 @@ static int do_help(int argc, char **argv) " sk_reuseport | flow_dissector | cgroup/sysctl |\n" " cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n" " cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n" - " cgroup/getpeername4 | cgroup/getpeername6 |\n" - " cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n" - " cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n" + " cgroup/connect_unix | cgroup/getpeername4 | cgroup/getpeername6 |\n" + " cgroup/getpeername_unix | cgroup/getsockname4 | cgroup/getsockname6 |\n" + " cgroup/getsockname_unix | cgroup/sendmsg4 | cgroup/sendmsg6 |\n" + " cgroup/sendmsg°unix | cgroup/recvmsg4 | cgroup/recvmsg6 | cgroup/recvmsg_unix |\n" " cgroup/getsockopt | cgroup/setsockopt | cgroup/sock_release |\n" " struct_ops | fentry | fexit | freplace | sk_lookup }\n" " ATTACH_TYPE := { sk_msg_verdict | sk_skb_verdict | sk_skb_stream_verdict |\n"