From 3aaca6bf7a09150e4c87f2932dc8ebe82a586252 Mon Sep 17 00:00:00 2001 From: Quentin Monnet Date: Mon, 23 Oct 2017 09:24:12 -0700 Subject: [PATCH] tools: bpftool: add JSON output for `bpftool batch file FILE` command `bpftool batch file FILE` takes FILE as an argument and executes all the bpftool commands it finds inside (or stops if an error occurs). To obtain a consistent JSON output, create a root JSON array, then for each command create a new object containing two fields: one with the command arguments, the other with the output (which is the JSON object that the command would have produced, if called on its own). Signed-off-by: Quentin Monnet Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- tools/bpf/bpftool/main.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 14bfc17..71b01bf 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -155,6 +155,7 @@ static int do_batch(int argc, char **argv) int n_argc; FILE *fp; int err; + int i; if (argc < 2) { err("too few parameters for batch\n"); @@ -174,6 +175,8 @@ static int do_batch(int argc, char **argv) return -1; } + if (json_output) + jsonw_start_array(json_wtr); while (fgets(buf, sizeof(buf), fp)) { if (strlen(buf) == sizeof(buf) - 1) { errno = E2BIG; @@ -197,7 +200,21 @@ static int do_batch(int argc, char **argv) if (!n_argc) continue; + if (json_output) { + jsonw_start_object(json_wtr); + jsonw_name(json_wtr, "command"); + jsonw_start_array(json_wtr); + for (i = 0; i < n_argc; i++) + jsonw_string(json_wtr, n_argv[i]); + jsonw_end_array(json_wtr); + jsonw_name(json_wtr, "output"); + } + err = cmd_select(cmds, n_argc, n_argv, do_help); + + if (json_output) + jsonw_end_object(json_wtr); + if (err) goto err_close; @@ -214,6 +231,9 @@ static int do_batch(int argc, char **argv) err_close: fclose(fp); + if (json_output) + jsonw_end_array(json_wtr); + return err; } -- 2.7.4