linux-kernel - [PATCH bpf-next v2] samples: bpf: syscall_tp: Add syscall openat2 enter/exit tracepoint

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Message-ID: <tencent_9381CB1A158ED7ADD12C4406034E21A3AC07@qq.com>
Date:   Wed,  8 Feb 2023 09:04:41 +0800
From:   Rong Tao <rtoax@...mail.com>
To:     ast@...nel.org
Cc:     Rong Tao <rongtao@...tc.cn>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and
        Tools)), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH bpf-next v2] samples: bpf: syscall_tp: Add syscall openat2 enter/exit tracepoint

From: Rong Tao <rongtao@...tc.cn>

commit fe3300897cbf("samples: bpf: fix syscall_tp due to unused syscall")
add openat() syscall trapoints, this submit support openat2().

Signed-off-by: Rong Tao <rongtao@...tc.cn>
---
v2: Add 'bpf-next' in Subject
v1: https://lore.kernel.org/lkml/tencent_FB3E886D062242FF59A997492A3BAF2BA308@qq.com/
---
 samples/bpf/syscall_tp_kern.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/samples/bpf/syscall_tp_kern.c b/samples/bpf/syscall_tp_kern.c
index 50231c2eff9c..e7121dd1ee37 100644
--- a/samples/bpf/syscall_tp_kern.c
+++ b/samples/bpf/syscall_tp_kern.c
@@ -58,6 +58,13 @@ int trace_enter_open_at(struct syscalls_enter_open_args *ctx)
 	return 0;
 }
 
+SEC("tracepoint/syscalls/sys_enter_openat2")
+int trace_enter_open_at2(struct syscalls_enter_open_args *ctx)
+{
+	count(&enter_open_map);
+	return 0;
+}
+
 SEC("tracepoint/syscalls/sys_exit_open")
 int trace_enter_exit(struct syscalls_exit_open_args *ctx)
 {
@@ -71,3 +78,10 @@ int trace_enter_exit_at(struct syscalls_exit_open_args *ctx)
 	count(&exit_open_map);
 	return 0;
 }
+
+SEC("tracepoint/syscalls/sys_exit_openat2")
+int trace_enter_exit_at2(struct syscalls_exit_open_args *ctx)
+{
+	count(&exit_open_map);
+	return 0;
+}
-- 
2.39.1