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

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Message-Id: <20220921093654.230855-1-ye.xingchen@zte.com.cn>
Date:   Wed, 21 Sep 2022 09:36:54 +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, adrian.hunter@...el.com, andrii@...nel.org,
        songliubraving@...com, irogers@...gle.com, davemarchevsky@...com,
        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 dso: 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/util/dso.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index f1a14c0ad26d..f2a684f86b82 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -318,7 +318,7 @@ int filename__decompress(const char *name, char *pathname,
 		unlink(tmpbuf);
 
 	if (pathname && (fd >= 0))
-		strlcpy(pathname, tmpbuf, len);
+		strscpy(pathname, tmpbuf, len);
 
 	return fd;
 }
-- 
2.25.1