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@suse.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index 10b6c9d..e6dcb36 100644 (file)
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -724,7 +724,7 @@ static int dump_map_elem(int fd, void *key, void *value,
        } else {
                const char *msg = NULL;
 
-               if (errno == ENOENT)
+               if (lookup_errno == ENOENT)
                        msg = "<no entry>";
                else if (lookup_errno == ENOSPC &&
                         map_info->type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY)