Messages in this thread Patch in this message | | | From | Alban Crequy <> | Subject | [PATCH bpf-next v1 7/7] tools: bpftool: add error message on map pinning failure | Date | Wed, 20 Mar 2019 18:33:32 +0100 |
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From: Alban Crequy <alban@kinvolk.io>
Symptoms, when "dir" does not exist:
$ sudo bpftool map create /sys/fs/bpf/dir/fooB type hash key 8 value 8 entries 8 name fooB flags 1 $ echo $? 255
This patch prints an error message when the map pinning fails.
Signed-off-by: Alban Crequy <alban@kinvolk.io> --- tools/bpf/bpftool/map.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c index 9befcabc299d..c825eb1bbf8f 100644 --- a/tools/bpf/bpftool/map.c +++ b/tools/bpf/bpftool/map.c @@ -1305,8 +1305,10 @@ static int do_create(int argc, char **argv) err = do_pin_fd(fd, pinfile); close(fd); - if (err) + if (err) { + p_err("failed to pin map to %s", pinfile); return err; + } if (json_output) jsonw_null(json_wtr); -- 2.20.1
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