+/*
+ * Duplicate up to n bytes of a string. Kind of sort of like
+ * strdup(strlcpy(s, n)).
+ */
+char *
+uu_strndup(const char *s, size_t n)
+{
+ size_t len;
+ char *p;
+
+ len = strnlen(s, n);
+ p = uu_zalloc(len + 1);
+ if (p == NULL)
+ return (NULL);
+
+ if (len > 0)
+ (void) memcpy(p, s, len);
+ p[len] = '\0';
+
+ return (p);
+}
+
+/*
+ * Duplicate a block of memory. Combines malloc with memcpy, much as
+ * strdup combines malloc, strlen, and strcpy.
+ */
+void *
+uu_memdup(const void *buf, size_t sz)
+{
+ void *p;
+
+ p = uu_zalloc(sz);
+ if (p == NULL)
+ return (NULL);
+ (void) memcpy(p, buf, sz);
+ return (p);
+}
+