xiaoxiang781216 commented on code in PR #3893:
URL: https://github.com/apache/nuttx-apps/pull/3893#discussion_r4339268859
##########
netutils/wifibridge/wifibridge.c:
##########
@@ -346,3 +409,185 @@ int wifibridge_status(FAR const struct
wifibridge_config_s *config,
close(sock);
return OK;
}
+
+#ifdef CONFIG_NETUTILS_WIFIBRIDGE_PERSIST
+
+/****************************************************************************
+ * Name: wifibridge_record_crc
+ *
+ * Description:
+ * CRC-32 of the record after the CRC field.
+ *
+ ****************************************************************************/
+
+static uint32_t wifibridge_record_crc(
+ FAR const struct wifibridge_record_s *record)
+{
+ return crc32((FAR const uint8_t *)&record->version,
+ sizeof(*record) - offsetof(struct wifibridge_record_s,
+ version));
+}
+
+/****************************************************************************
+ * Name: wifibridge_record_io
+ *
+ * Description:
+ * Read or write the record at the start of the storage.
+ *
+ ****************************************************************************/
+
+static int wifibridge_record_io(FAR struct wifibridge_record_s *record,
+ bool write)
+{
+ ssize_t nbytes;
+ int ret = OK;
+ int fd;
+
+ fd = open(CONFIG_NETUTILS_WIFIBRIDGE_STORAGE,
+ write ? O_RDWR | O_CREAT : O_RDONLY, 0600);
+ if (fd < 0)
+ {
+ return -errno;
+ }
+
+ if (write)
+ {
+ nbytes = pwrite(fd, record, sizeof(*record), 0);
Review Comment:
write
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