[PATCH net-next 2/8] tools: bpftool: fix return value when all eBPF programs have been shown

[Jakub Kicinski]

From: Quentin Monnet <quentin.mon...@netronome.com>

Change the program to have a more consistent return code. Specifically,
do not make bpftool return an error code simply because it reaches the
end of the list of the eBPF programs to show.

Signed-off-by: Quentin Monnet <quentin.mon...@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 tools/bpf/bpftool/prog.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index aa6d72ea3807..ede7957adcd9 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -275,8 +275,10 @@ static int do_show(int argc, char **argv)
        while (true) {
                err = bpf_prog_get_next_id(id, &id);
                if (err) {
-                       if (errno == ENOENT)
+                       if (errno == ENOENT) {
+                               err = 0;
                                break;
+                       }
                        err("can't get next program: %s\n", strerror(errno));
                        if (errno == EINVAL)
                                err("kernel too old?\n");
-- 
2.14.1