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From: Jakub Kicinski <jakub.kicinski@netronome.com>
To: alexei.starovoitov@gmail.com, daniel@iogearbox.net
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
	oss-drivers@netronome.com, guro@fb.com, sdf@google.com,
	Jakub Kicinski <jakub.kicinski@netronome.com>,
	Quentin Monnet <quentin.monnet@netronome.com>
Subject: [PATCH bpf] tools: bpftool: use correct argument in cgroup errors
Date: Tue, 25 Jun 2019 09:56:31 -0700	[thread overview]
Message-ID: <20190625165631.18928-1-jakub.kicinski@netronome.com> (raw)

cgroup code tries to use argv[0] as the cgroup path,
but if it fails uses argv[1] to report errors.

Fixes: 5ccda64d38cc ("bpftool: implement cgroup bpf operations")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
---
 tools/bpf/bpftool/cgroup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c
index 73ec8ea33fb4..a13fb7265d1a 100644
--- a/tools/bpf/bpftool/cgroup.c
+++ b/tools/bpf/bpftool/cgroup.c
@@ -168,7 +168,7 @@ static int do_show(int argc, char **argv)
 
 	cgroup_fd = open(argv[0], O_RDONLY);
 	if (cgroup_fd < 0) {
-		p_err("can't open cgroup %s", argv[1]);
+		p_err("can't open cgroup %s", argv[0]);
 		goto exit;
 	}
 
@@ -356,7 +356,7 @@ static int do_attach(int argc, char **argv)
 
 	cgroup_fd = open(argv[0], O_RDONLY);
 	if (cgroup_fd < 0) {
-		p_err("can't open cgroup %s", argv[1]);
+		p_err("can't open cgroup %s", argv[0]);
 		goto exit;
 	}
 
@@ -414,7 +414,7 @@ static int do_detach(int argc, char **argv)
 
 	cgroup_fd = open(argv[0], O_RDONLY);
 	if (cgroup_fd < 0) {
-		p_err("can't open cgroup %s", argv[1]);
+		p_err("can't open cgroup %s", argv[0]);
 		goto exit;
 	}
 
-- 
2.21.0


             reply	other threads:[~2019-06-25 16:56 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-25 16:56 Jakub Kicinski [this message]
2019-06-25 17:21 ` [PATCH bpf] tools: bpftool: use correct argument in cgroup errors Roman Gushchin
2019-06-26 14:30 ` Daniel Borkmann

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