diff --git a/qemu/include/qemu-common.h b/qemu/include/qemu-common.h
index e2c3e3b1..29cc754a 100644
--- a/qemu/include/qemu-common.h
+++ b/qemu/include/qemu-common.h
@@ -98,6 +98,7 @@ int qemu_ftruncate64(int, int64_t);
 
 /* cutils.c */
 void pstrcpy(char *buf, int buf_size, const char *str);
+void strpadcpy(char *buf, int buf_size, const char *str, char pad);
 char *pstrcat(char *buf, int buf_size, const char *s);
 int strstart(const char *str, const char *val, const char **ptr);
 int qemu_fls(int i);
diff --git a/qemu/util/cutils.c b/qemu/util/cutils.c
index 0272f467..4190862e 100644
--- a/qemu/util/cutils.c
+++ b/qemu/util/cutils.c
@@ -27,6 +27,12 @@
 #include <limits.h>
 #include <errno.h>
 
+void strpadcpy(char *buf, int buf_size, const char *str, char pad)
+{
+    int len = qemu_strnlen(str, buf_size);
+    memcpy(buf, str, len);
+    memset(buf + len, pad, buf_size - len);
+}
 
 void pstrcpy(char *buf, int buf_size, const char *str)
 {