From: Len Brown <len.brown@intel.com>
Date: Thu, 19 Mar 2020 22:33:12 +0000 (-0400)
Subject: tools/power turbostat: Fix gcc build warnings
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d8d005ba6afa502ca37ced5782f672c4d2fc1515;p=linux.git

tools/power turbostat: Fix gcc build warnings

Warning: ‘__builtin_strncpy’ specified bound 20 equals destination size
	[-Wstringop-truncation]

reduce param to strncpy, to guarantee that a null byte is always copied
into destination buffer.

Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index dd5ac9f52ac51..fa95a8ca55655 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -5325,9 +5325,9 @@ int add_counter(unsigned int msr_num, char *path, char *name,
 	}
 
 	msrp->msr_num = msr_num;
-	strncpy(msrp->name, name, NAME_BYTES);
+	strncpy(msrp->name, name, NAME_BYTES - 1);
 	if (path)
-		strncpy(msrp->path, path, PATH_BYTES);
+		strncpy(msrp->path, path, PATH_BYTES - 1);
 	msrp->width = width;
 	msrp->type = type;
 	msrp->format = format;