linux-kernel - [PATCH] tools/bpf/bpftool: Fix wrong return value in do

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Date:   Sun,  2 Aug 2020 19:15:40 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     ast@...nel.org, daniel@...earbox.net, kafai@...com,
        songliubraving@...com, yhs@...com, andriin@...com,
        john.fastabend@...il.com, kpsingh@...omium.org,
        quentin@...valent.com, kuba@...nel.org, toke@...hat.com,
        tklauser@...tanz.ch, tianjia.zhang@...ux.alibaba.com,
        jolsa@...nel.org
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org, tianjia.zhang@...baba.com
Subject: [PATCH] tools/bpf/bpftool: Fix wrong return value in do_dump()

In case of btf_id does not exist, a negative error code -ENOENT
should be returned.

Fixes: c93cc69004df3 ("bpftool: add ability to dump BTF types")
Cc: Andrii Nakryiko <andriin@...com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
---
 tools/bpf/bpftool/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index faac8189b285..c2f1fd414820 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -596,7 +596,7 @@ static int do_dump(int argc, char **argv)
 			goto done;
 		}
 		if (!btf) {
-			err = ENOENT;
+			err = -ENOENT;
 			p_err("can't find btf with ID (%u)", btf_id);
 			goto done;
 		}
-- 
2.26.2