diff --git a/fakeid.c b/fakeid.c
index 0c6e0c4..43e8596 100644
--- a/fakeid.c
+++ b/fakeid.c
@@ -1,19 +1,30 @@
 #define _GNU_SOURCE
 
 #include <dlfcn.h>
+#include <errno.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 
+int strlcpy(char *restrict dest, const char *restrict src, size_t bufsize) {
+    size_t i;
+    for (i = 0; i < bufsize; ++i) {
+        dest[i] = src[i];
+        if (src[i] == '\0') {
+            return 0;
+        }
+    }
+    return ERANGE;
+}
+
 char *getlogin(void) {
     return getenv("USER");
 }
 
 int getlogin_r(char *buf, size_t bufsize) {
-    strncpy(buf, getlogin(), bufsize);
-    return 0;
+    return strlcpy(buf, getlogin(), bufsize);
 }
 
 struct passwd *getpwuid(uid_t uid) {