tools: bpftool: fix plain output and doc for --bpffs option

Edit the documentation of the -f|--bpffs option to make it explicit that
it dumps paths of pinned programs when bpftool is used to list the
programs only, so that users do not believe they will see the name of
the newly pinned program with "bpftool prog pin" or "bpftool prog load".

Also fix the plain output: do not add a blank line after each program
block, in order to remain consistent with what bpftool does when the
option is not passed.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 5302ee282409..9785244acc7b 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -357,10 +357,9 @@ static void print_prog_plain(struct bpf_prog_info *info, int fd)
         if (!hash_empty(prog_table.table)) {
                 struct pinned_obj *obj;
 
-                printf("\n");
                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
                         if (obj->id == info->id)
-                                printf("\tpinned %s\n", obj->path);
+                                printf("\n\tpinned %s", obj->path);
                 }
         }