Add strlcpy() from libbsd or bird's own impl.

configure.in

@@ -262,6 +262,8 @@ if test "$enable_debug" = yes ; then
 	fi
 fi
 
+AC_CHECK_LIB(bsd, strlcpy, LIBS="$LIBS -lbsd"; AC_DEFINE(HAVE_LIBBSD))
+
 CLIENT=
 CLIENT_LIBS=
 if test "$enable_client" = yes ; then

lib/printf.c

@@ -457,3 +457,32 @@ buffer_puts(buffer *buf, const char *str)
 
   buf->pos = bp;
 }
+
+#ifndef HAVE_LIBBSD
+/**
+ * strlcpy - BIRD's implementation of strlcpy()
+ *
+ * @dest: destination string
+ * @src: string must be NUL terminated
+ * @max_len: useable length in dest including the NUL terminator
+ * @return: the length of src string without the NUL terminator
+ *
+ * Size-bounded string copying and concatenation
+ */
+size_t
+strlcpy(char *dest, const char *src, size_t max_len)
+{
+  size_t len = strlen(src);
+
+  if (len < max_len)
+    memcpy(dest, src, len + 1);
+  else
+  {
+    max_len--;
+    memcpy(dest, src, max_len);
+    dest[max_len] = 0;
+  }
+
+  return len;
+}
+#endif

lib/string.h

@@ -24,4 +24,10 @@ void buffer_puts(buffer *buf, const char *str);
 
 int patmatch(byte *pat, byte *str);
 
+#ifdef HAVE_LIBBSD
+#include <bsd/string.h>
+#else
+size_t strlcpy(char *dst, const char *src, size_t size);
+#endif
+
 #endif

sysdep/autoconf.h.in

@@ -66,4 +66,7 @@
 /* We have stdint.h */
 #undef HAVE_STDINT_H
 
+/* We have  <bsd/string.h> and strlcpy() */
+#undef HAVE_LIBBSD
+
 #define CONFIG_PATH ?