linux-kernel - [PATCH linux-next] perf jvmti: use strscpy() is more robust and safer

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Message-Id: <20220922013728.233286-1-ye.xingchen@zte.com.cn>
Date:   Thu, 22 Sep 2022 01:37:28 +0000
From:   cgel.zte@...il.com
To:     acme@...nel.org
Cc:     mingo@...hat.com, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        namhyung@...nel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, ye xingchen <ye.xingchen@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] perf jvmti: use strscpy() is more robust and safer

From: ye xingchen <ye.xingchen@....com.cn>

The implementation of strscpy() is more robust and safer.

That's now the recommended way to copy NUL terminated strings.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
---
 tools/perf/jvmti/libjvmti.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/jvmti/libjvmti.c b/tools/perf/jvmti/libjvmti.c
index fcca275e5bf9..04d6825d23c8 100644
--- a/tools/perf/jvmti/libjvmti.c
+++ b/tools/perf/jvmti/libjvmti.c
@@ -158,7 +158,7 @@ copy_class_filename(const char * class_sign, const char * file_name, char * resu
 		result[i] = '\0';
 	} else {
 		/* fallback case */
-		strlcpy(result, file_name, max_length);
+		strscpy(result, file_name, max_length);
 	}
 }
 
-- 
2.25.1