netdev - [PATCH bpf] bpftool: Fix errno variable usage

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Message-Id: <20190411080332.24574-1-bpoirier@suse.com>
Date:   Thu, 11 Apr 2019 17:03:32 +0900
From:   Benjamin Poirier <bpoirier@...e.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        David Ahern <dsahern@...il.com>
Subject: [PATCH bpf] bpftool: Fix errno variable usage

The test meant to use the saved value of errno. Given the current code, it
makes no practical difference however.

Fixes: bf598a8f0f77 ("bpftool: Improve handling of ENOENT on map dumps")
Signed-off-by: Benjamin Poirier <bpoirier@...e.com>
---
 tools/bpf/bpftool/map.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index e0c650d91784..05b029b934a6 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -720,7 +720,7 @@ static int dump_map_elem(int fd, void *key, void *value,
 		jsonw_string_field(json_wtr, "error", strerror(lookup_errno));
 		jsonw_end_object(json_wtr);
 	} else {
-		if (errno == ENOENT)
+		if (lookup_errno == ENOENT)
 			print_entry_plain(map_info, key, NULL);
 		else
 			print_entry_error(map_info, key,
-- 
2.21.0