From 3bcdea42e7402e79a914fe3cbefdcc1caa89464c Mon Sep 17 00:00:00 2001
From: Andrea Claudi <aclaudi@redhat.com>
Date: Mon, 29 Apr 2019 20:08:08 +0200
Subject: [PATCH] utils: Implement strlcpy() and strlcat()

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
Upstream Status: iproute2.git commit 8d15e012a3227

commit 8d15e012a3227d79295cd95582bb6d8a6f0bdc92
Author: Phil Sutter <phil@nwl.cc>
Date:   Fri Sep 1 18:52:51 2017 +0200

    utils: Implement strlcpy() and strlcat()

    By making use of strncpy(), both implementations are really simple so
    there is no need to add libbsd as additional dependency.

    Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 include/utils.h |  3 +++
 lib/utils.c     | 19 +++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/utils.h b/include/utils.h
index d707a9dacdb85..d596a6fc10574 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -264,4 +264,7 @@ int make_path(const char *path, mode_t mode);
 char *find_cgroup2_mount(void);
 int get_command_name(const char *pid, char *comm, size_t len);
 
+size_t strlcpy(char *dst, const char *src, size_t size);
+size_t strlcat(char *dst, const char *src, size_t size);
+
 #endif /* __UTILS_H__ */
diff --git a/lib/utils.c b/lib/utils.c
index fc9c575ba0c7d..c9ba2f332c2a7 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -1228,3 +1228,22 @@ int get_real_family(int rtm_type, int rtm_family)
 
 	return rtm_family;
 }
+
+size_t strlcpy(char *dst, const char *src, size_t size)
+{
+	if (size) {
+		strncpy(dst, src, size - 1);
+		dst[size - 1] = '\0';
+	}
+	return strlen(src);
+}
+
+size_t strlcat(char *dst, const char *src, size_t size)
+{
+	size_t dlen = strlen(dst);
+
+	if (dlen > size)
+		return dlen + strlen(src);
+
+	return dlen + strlcpy(dst + dlen, src, size - dlen);
+}
-- 
2.21.0