diff --git a/include/cutils/str_parms.h b/include/cutils/str_parms.h
index 247c996..66f3637 100644
--- a/include/cutils/str_parms.h
+++ b/include/cutils/str_parms.h
@@ -34,6 +34,12 @@
 int str_parms_add_float(struct str_parms *str_parms, const char *key,
                         float value);
 
+// Returns non-zero if the str_parms contains the specified key.
+int str_parms_has_key(struct str_parms *str_parms, const char *key);
+
+// Gets value associated with the specified key (if present), placing it in the buffer
+// pointed to by the out_val parameter.  Returns the length of the returned string value.
+// If 'key' isn't in the parms, then return -ENOENT (-2) and leave 'out_val' untouched.
 int str_parms_get_str(struct str_parms *str_parms, const char *key,
                       char *out_val, int len);
 int str_parms_get_int(struct str_parms *str_parms, const char *key,
diff --git a/libcutils/str_parms.c b/libcutils/str_parms.c
index 7cfbcb3..1edef11 100644
--- a/libcutils/str_parms.c
+++ b/libcutils/str_parms.c
@@ -240,6 +240,10 @@
     return ret;
 }
 
+int str_parms_has_key(struct str_parms *str_parms, const char *key) {
+    return hashmapGet(str_parms->map, (void *)key) != NULL;
+}
+
 int str_parms_get_str(struct str_parms *str_parms, const char *key, char *val,
                       int len)
 {