diff --git a/wpa_supplicant/dbus/dbus_dict_helpers.c b/wpa_supplicant/dbus/dbus_dict_helpers.c
index 68a9c28a6..7646bd7cf 100644
--- a/wpa_supplicant/dbus/dbus_dict_helpers.c
+++ b/wpa_supplicant/dbus/dbus_dict_helpers.c
@@ -1104,5 +1104,5 @@ void wpa_dbus_dict_entry_clear(struct wpa_dbus_dict_entry *entry)
 		break;
 	}
 
-	memset(entry, 0, sizeof(struct wpa_dbus_dict_entry));
+	os_memset(entry, 0, sizeof(struct wpa_dbus_dict_entry));
 }
diff --git a/wpa_supplicant/dbus/dbus_new.c b/wpa_supplicant/dbus/dbus_new.c
index c7413aa12..138b76f31 100644
--- a/wpa_supplicant/dbus/dbus_new.c
+++ b/wpa_supplicant/dbus/dbus_new.c
@@ -953,7 +953,7 @@ static int wpas_dbus_get_group_obj_path(struct wpa_supplicant *wpa_s,
 	if (os_memcmp(ssid->ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN))
 		return -1;
 
-	memcpy(group_name, ssid->ssid + P2P_WILDCARD_SSID_LEN, 2);
+	os_memcpy(group_name, ssid->ssid + P2P_WILDCARD_SSID_LEN, 2);
 	group_name[2] = '\0';
 
 	os_snprintf(group_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
diff --git a/wpa_supplicant/dbus/dbus_new_handlers.c b/wpa_supplicant/dbus/dbus_new_handlers.c
index 3514b80d8..c950e20fb 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers.c
@@ -253,7 +253,7 @@ dbus_bool_t set_network_properties(struct wpa_supplicant *wpa_s,
 
 		if ((os_strcmp(entry.key, "psk") == 0 &&
 		     value[0] == '"' && ssid->ssid_len) ||
-		    (strcmp(entry.key, "ssid") == 0 && ssid->passphrase))
+		    (os_strcmp(entry.key, "ssid") == 0 && ssid->passphrase))
 			wpa_config_update_psk(ssid);
 		else if (os_strcmp(entry.key, "priority") == 0)
 			wpa_config_update_prio_list(wpa_s->conf);
@@ -547,25 +547,25 @@ DBusMessage * wpas_dbus_handler_create_interface(DBusMessage *message,
 	while (wpa_dbus_dict_has_dict_entry(&iter_dict)) {
 		if (!wpa_dbus_dict_get_entry(&iter_dict, &entry))
 			goto error;
-		if (!strcmp(entry.key, "Driver") &&
+		if (!os_strcmp(entry.key, "Driver") &&
 		    (entry.type == DBUS_TYPE_STRING)) {
 			driver = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (driver == NULL)
 				goto error;
-		} else if (!strcmp(entry.key, "Ifname") &&
+		} else if (!os_strcmp(entry.key, "Ifname") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
 			ifname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (ifname == NULL)
 				goto error;
-		} else if (!strcmp(entry.key, "ConfigFile") &&
+		} else if (!os_strcmp(entry.key, "ConfigFile") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
 			confname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
 			if (confname == NULL)
 				goto error;
-		} else if (!strcmp(entry.key, "BridgeIfname") &&
+		} else if (!os_strcmp(entry.key, "BridgeIfname") &&
 			   (entry.type == DBUS_TYPE_STRING)) {
 			bridge_ifname = os_strdup(entry.str_value);
 			wpa_dbus_dict_entry_clear(&entry);
diff --git a/wpa_supplicant/dbus/dbus_new_handlers_p2p.c b/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
index 60ba7782e..62930c7a3 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers_p2p.c
@@ -45,7 +45,7 @@ static int parse_peer_object_path(char *peer_path, u8 addr[ETH_ALEN])
 
 	if (!peer_path)
 		return -1;
-	p = strrchr(peer_path, '/');
+	p = os_strrchr(peer_path, '/');
 	if (!p)
 		return -1;
 	p++;
diff --git a/wpa_supplicant/wpa_cli.c b/wpa_supplicant/wpa_cli.c
index 1d59bcd1d..21a44833e 100644
--- a/wpa_supplicant/wpa_cli.c
+++ b/wpa_supplicant/wpa_cli.c
@@ -1880,7 +1880,7 @@ static int wpa_ctrl_command_sta(struct wpa_ctrl *ctrl, char *cmd,
 		return -1;
 	}
 	len = sizeof(buf) - 1;
-	ret = wpa_ctrl_request(ctrl, cmd, strlen(cmd), buf, &len,
+	ret = wpa_ctrl_request(ctrl, cmd, os_strlen(cmd), buf, &len,
 			       wpa_cli_msg_cb);
 	if (ret == -2) {
 		printf("'%s' command timed out.\n", cmd);
@@ -1891,7 +1891,7 @@ static int wpa_ctrl_command_sta(struct wpa_ctrl *ctrl, char *cmd,
 	}
 
 	buf[len] = '\0';
-	if (memcmp(buf, "FAIL", 4) == 0)
+	if (os_memcmp(buf, "FAIL", 4) == 0)
 		return -1;
 	printf("%s", buf);
 
@@ -2425,7 +2425,7 @@ static int wpa_ctrl_command_p2p_peer(struct wpa_ctrl *ctrl, char *cmd,
 	if (ctrl_conn == NULL)
 		return -1;
 	len = sizeof(buf) - 1;
-	ret = wpa_ctrl_request(ctrl, cmd, strlen(cmd), buf, &len,
+	ret = wpa_ctrl_request(ctrl, cmd, os_strlen(cmd), buf, &len,
 			       wpa_cli_msg_cb);
 	if (ret == -2) {
 		printf("'%s' command timed out.\n", cmd);
@@ -2436,7 +2436,7 @@ static int wpa_ctrl_command_p2p_peer(struct wpa_ctrl *ctrl, char *cmd,
 	}
 
 	buf[len] = '\0';
-	if (memcmp(buf, "FAIL", 4) == 0)
+	if (os_memcmp(buf, "FAIL", 4) == 0)
 		return -1;
 
 	pos = buf;