netdev - [PATCH bpf-next 3/3] bpftool: print the comm of the process that loaded the program

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Message-Id: <20191011162124.52982-3-sdf@google.com>
Date:   Fri, 11 Oct 2019 09:21:24 -0700
From:   Stanislav Fomichev <sdf@...gle.com>
To:     netdev@...r.kernel.org, bpf@...r.kernel.org
Cc:     davem@...emloft.net, ast@...nel.org, daniel@...earbox.net,
        Stanislav Fomichev <sdf@...gle.com>
Subject: [PATCH bpf-next 3/3] bpftool: print the comm of the process that
 loaded the program

Print recently added created_by_comm along the existing created_by_uid.

Example with loop1.o (loaded via bpftool):
4: raw_tracepoint  name nested_loops  tag b9472b3ff5753ef2  gpl
        loaded_at 2019-10-10T13:38:18-0700  uid 0  comm bpftool
        xlated 264B  jited 152B  memlock 4096B
        btf_id 3

Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
---
 tools/bpf/bpftool/prog.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 27da96a797ab..400771a942d7 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -296,7 +296,9 @@ static void print_prog_plain(struct bpf_prog_info *info, int fd)
 		print_boot_time(info->load_time, buf, sizeof(buf));
 
 		/* Piggy back on load_time, since 0 uid is a valid one */
-		printf("\tloaded_at %s  uid %u\n", buf, info->created_by_uid);
+		printf("\tloaded_at %s  uid %u  comm %s\n", buf,
+		       info->created_by_uid,
+		       info->created_by_comm);
 	}
 
 	printf("\txlated %uB", info->xlated_prog_len);
-- 
2.23.0.700.g56cf767bdb-goog