netdev - [PATCH iproute2-next 07/11] tc_util: fix clang warning in print_masked

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Date:   Sat,  8 Jan 2022 12:46:46 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     netdev@...r.kernel.org
Cc:     Stephen Hemminger <sthemmin@...rosoft.com>, elibr@...lanox.com,
        Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH iproute2-next 07/11] tc_util: fix clang warning in print_masked_type

Clang complains about passing a non-format string but the code here
was doing extra work the JSON case.  It was also broken if using oneline mode.

Fixes: 04b215015ba8 ("tc_util: introduce a function to print JSON/non-JSON masked numbers")
Cc: elibr@...lanox.com
Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
 tc/tc_util.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/tc/tc_util.c b/tc/tc_util.c
index 6d5eb754831a..c95b6fd6e49d 100644
--- a/tc/tc_util.c
+++ b/tc/tc_util.c
@@ -783,7 +783,6 @@ static void print_masked_type(__u32 type_max,
 			      const char *name, struct rtattr *attr,
 			      struct rtattr *mask_attr, bool newline)
 {
-	SPRINT_BUF(namefrm);
 	__u32 value, mask;
 	SPRINT_BUF(out);
 	size_t done;
@@ -795,26 +794,21 @@ static void print_masked_type(__u32 type_max,
 	mask = mask_attr ? rta_getattr_type(mask_attr) : type_max;
 
 	if (is_json_context()) {
-		sprintf(namefrm, "\n  %s %%u", name);
-		print_hu(PRINT_ANY, name, namefrm,
-			 rta_getattr_type(attr));
+		print_hu(PRINT_JSON, name, NULL, value);
 		if (mask != type_max) {
 			char mask_name[SPRINT_BSIZE-6];
 
 			sprintf(mask_name, "%s_mask", name);
-			if (newline)
-				print_string(PRINT_FP, NULL, "%s ", _SL_);
-			sprintf(namefrm, " %s %%u", mask_name);
-			print_hu(PRINT_ANY, mask_name, namefrm, mask);
+			print_hu(PRINT_JSON, mask_name, NULL, mask);
 		}
 	} else {
 		done = sprintf(out, "%u", value);
 		if (mask != type_max)
 			sprintf(out + done, "/0x%x", mask);
-		if (newline)
-			print_string(PRINT_FP, NULL, "%s ", _SL_);
-		sprintf(namefrm, " %s %%s", name);
-		print_string(PRINT_ANY, name, namefrm, out);
+
+		print_nl();
+		print_string(PRINT_FP, NULL, " %s", name);
+		print_string(PRINT_FP, NULL, " %s", out);
 	}
 }
 
-- 
2.30.2