From 5307949e8fdc6970dc401e67392db642639f3a4c Mon Sep 17 00:00:00 2001
From: Quentin Young <qlyoung@cumulusnetworks.com>
Date: Wed, 8 May 2019 15:46:29 +0000
Subject: [PATCH] tools: add lints for unsafe functions

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
---
 tools/checkpatch.pl | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/checkpatch.pl b/tools/checkpatch.pl
index 77e6e9a330..1b48d10a09 100755
--- a/tools/checkpatch.pl
+++ b/tools/checkpatch.pl
@@ -6347,6 +6347,35 @@ sub process {
 			     "Please, only use 32 bit atomics.\n" . $herecurr);
 		}
 
+# check for use of strcpy()
+		if ($line =~ /\bstrcpy\s*\(.*\)/) {
+			ERROR("STRCPY",
+			      "strcpy() is error-prone; please use strlcpy()"  . $herecurr);
+		}
+
+# check for use of strncpy()
+		if ($line =~ /\bstrncpy\s*\(.*\)/) {
+			WARN("STRNCPY",
+			     "strncpy() is error-prone; please use strlcpy() if possible, or memcpy()"  . $herecurr);
+		}
+
+# check for use of strcat()
+		if ($line =~ /\bstrcat\s*\(.*\)/) {
+			ERROR("STRCAT",
+			      "strcat() is error-prone; please use strlcat() if possible"  . $herecurr);
+		}
+
+# check for use of strncat()
+		if ($line =~ /\bstrncat\s*\(.*\)/) {
+			WARN("STRNCAT",
+			     "strncat() is error-prone; please use strlcat() if possible"  . $herecurr);
+		}
+
+# check for use of bzero()
+		if ($line =~ /\bbzero\s*\(.*\)/) {
+			ERROR("BZERO",
+			      "bzero() is deprecated; use memset()"  . $herecurr);
+		}
 	}
 
 	# If we have no input at all, then there is nothing to report on
-- 
2.39.5