From d8d8b008629ffd69f1e204010cb3299bb633877e Mon Sep 17 00:00:00 2001 From: Manu Bretelle Date: Wed, 29 Mar 2023 00:30:02 -0700 Subject: [PATCH] tools: bpftool: json: Fix backslash escape typo in jsonw_puts This is essentially a backport of iproute2's commit ed54f76484b5 ("json: fix backslash escape typo in jsonw_puts") Also added the stdio.h include in json_writer.h to be able to compile and run the json_writer test as used below). Before this fix: $ gcc -D notused -D TEST -I../../include -o json_writer json_writer.c json_writer.h $ ./json_writer { "Vyatta": { "url": "http://vyatta.com", "downloads": 2000000, "stock": 8.16, "ARGV": [], "empty": [], "NIL": {}, "my_null": null, "special chars": [ "slash": "/", "newline": "\n", "tab": "\t", "ff": "\f", "quote": "\"", "tick": "'", "backslash": "\n" ] } } After: $ gcc -D notused -D TEST -I../../include -o json_writer json_writer.c json_writer.h $ ./json_writer { "Vyatta": { "url": "http://vyatta.com", "downloads": 2000000, "stock": 8.16, "ARGV": [], "empty": [], "NIL": {}, "my_null": null, "special chars": [ "slash": "/", "newline": "\n", "tab": "\t", "ff": "\f", "quote": "\"", "tick": "'", "backslash": "\\" ] } } Signed-off-by: Manu Bretelle Signed-off-by: Andrii Nakryiko Reviewed-by: Quentin Monnet Link: https://lore.kernel.org/bpf/20230329073002.2026563-1-chantr4@gmail.com --- tools/bpf/bpftool/json_writer.c | 2 +- tools/bpf/bpftool/json_writer.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/bpf/bpftool/json_writer.c b/tools/bpf/bpftool/json_writer.c index bca5dd0a59e3..be379613d118 100644 --- a/tools/bpf/bpftool/json_writer.c +++ b/tools/bpf/bpftool/json_writer.c @@ -75,7 +75,7 @@ static void jsonw_puts(json_writer_t *self, const char *str) fputs("\\b", self->out); break; case '\\': - fputs("\\n", self->out); + fputs("\\\\", self->out); break; case '"': fputs("\\\"", self->out); diff --git a/tools/bpf/bpftool/json_writer.h b/tools/bpf/bpftool/json_writer.h index 8ace65cdb92f..5aaffd3b837b 100644 --- a/tools/bpf/bpftool/json_writer.h +++ b/tools/bpf/bpftool/json_writer.h @@ -14,6 +14,7 @@ #include #include #include +#include #include /* Opaque class structure */