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author | Quentin Monnet <quentin.monnet@netronome.com> | 2017-10-23 09:24:12 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-10-24 01:25:09 +0100 |
commit | 3aaca6bf7a09150e4c87f2932dc8ebe82a586252 (patch) | |
tree | 5f58efe61c9d6f20f79d34d75058fce3bd7e6a8f /tools | |
parent | 831a0aafe5c39405150d47994fe0a5bcd78fbadc (diff) | |
download | linux-3aaca6bf7a09150e4c87f2932dc8ebe82a586252.tar.bz2 |
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 <quentin.monnet@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/bpf/bpftool/main.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 14bfc17cd4de..71b01bf73912 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; } |