netdev - [PATCH bpf 1/2] tools: bpftool: preserve JSON for batch mode when dumping insns to file

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180215064255.9707-2-jakub.kicinski@netronome.com>
Date:   Wed, 14 Feb 2018 22:42:54 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     daniel@...earbox.net, alexei.starovoitov@...il.com
Cc:     netdev@...r.kernel.org, oss-drivers@...ronome.com,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: [PATCH bpf 1/2] tools: bpftool: preserve JSON for batch mode when dumping insns to file

From: Quentin Monnet <quentin.monnet@...ronome.com>

Print a "null" JSON object to standard output when bpftool is used to
print program instructions to a file, so as to avoid breaking JSON
output on batch mode.

This null object was added for most commands in a previous commit, but
this specific case had been omitted.

Fixes: 004b45c0e51a ("tools: bpftool: provide JSON output for all possible commands")
Signed-off-by: Quentin Monnet <quentin.monnet@...ronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 tools/bpf/bpftool/prog.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index e8e2baaf93c2..e549e329be82 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -774,6 +774,9 @@ static int do_dump(int argc, char **argv)
 			      n < 0 ? strerror(errno) : "short write");
 			goto err_free;
 		}
+
+		if (json_output)
+			jsonw_null(json_wtr);
 	} else {
 		if (member_len == &info.jited_prog_len) {
 			const char *name = NULL;
-- 
2.15.1