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tools: bpftool: optionally show filenames of pinned objects

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Making it optional to show file names of pinned objects because
it scans complete bpf-fs filesystem which is costly.
Added option -f|--bpffs. Documentation updated.

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Prashant Bhole
2017-11-08 13:55:49 +09:00
committed by David S. Miller
parent 4990f1f461
commit c541b73466
6 changed files with 25 additions and 8 deletions
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14
tools/bpf/bpftool/main.c
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@@ -54,6 +54,7 @@ static int (*last_do_help)(int argc, char **argv);
json_writer_t *json_wtr;
bool pretty_output;
bool json_output;
bool show_pinned;
struct pinned_obj_table prog_table;
struct pinned_obj_table map_table;
@@ -265,6 +266,7 @@ int main(int argc, char **argv)
{ "help", no_argument, NULL, 'h' },
{ "pretty", no_argument, NULL, 'p' },
{ "version", no_argument, NULL, 'V' },
{ "bpffs", no_argument, NULL, 'f' },
{ 0 }
};
int opt, ret;
@@ -272,12 +274,13 @@ int main(int argc, char **argv)
last_do_help = do_help;
pretty_output = false;
json_output = false;
show_pinned = false;
bin_name = argv[0];
hash_init(prog_table.table);
hash_init(map_table.table);
while ((opt = getopt_long(argc, argv, "Vhpj",
while ((opt = getopt_long(argc, argv, "Vhpjf",
options, NULL)) >= 0) {
switch (opt) {
case 'V':
@@ -290,6 +293,9 @@ int main(int argc, char **argv)
case 'j':
json_output = true;
break;
case 'f':
show_pinned = true;
break;
default:
usage();
}
@@ -316,8 +322,10 @@ int main(int argc, char **argv)
if (json_output)
jsonw_destroy(&json_wtr);
delete_pinned_obj_table(&prog_table);
delete_pinned_obj_table(&map_table);
if (show_pinned) {
delete_pinned_obj_table(&prog_table);
delete_pinned_obj_table(&map_table);
}
return ret;
}