From 21e6d4fd0924b869a22350e478c8d4b4325a706e Mon Sep 17 00:00:00 2001
From: Fancy code <258828110.@qq.com>
Date: Fri, 24 May 2024 09:01:38 +0800
Subject: [PATCH] Improve:Ipc config.

---
 customization/README.md                    | 52 +++++++++++++++++++++-
 middleware/IpcConfig/src/IpcConfigImpl.cpp | 39 ++++++++++++----
 middleware/IpcConfig/src/IpcConfigImpl.h   |  1 +
 3 files changed, 82 insertions(+), 10 deletions(-)

diff --git a/customization/README.md b/customization/README.md
index fad1dca..f04cd31 100644
--- a/customization/README.md
+++ b/customization/README.md
@@ -13,4 +13,54 @@
 
 ### 1.2.3. 其它定制版本
 
-&emsp;&emsp; 基于公版，继承派生出来的特殊功能的商业化版本。
\ No newline at end of file
+&emsp;&emsp; 基于公版，继承派生出来的特殊功能的商业化版本。
+
+```
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int is_mounted(const char *dirpath) {
+    FILE *fp;
+    char line[1024];
+    char mount_point[1024];
+
+    // 尝试打开 /proc/mounts 文件
+    fp = fopen("/proc/mounts", "r");
+    if (fp == NULL) {
+        perror("Error opening /proc/mounts");
+        return -1;
+    }
+
+    // 逐行读取并查找挂载点
+    while (fgets(line, sizeof(line), fp) != NULL) {
+        if (sscanf(line, "%*s %1023s %*s %*s %*d %*d\n", mount_point) == 1) {
+            // 检查当前行中的挂载点是否与所查找的目录匹配
+            if (strcmp(dirpath, mount_point) == 0) {
+                fclose(fp);
+                return 1; // 已挂载
+            }
+        }
+    }
+
+    fclose(fp);
+    return 0; // 未挂载
+}
+
+int main(int argc, char *argv[]) {
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <directory>\n", argv[0]);
+        return 1;
+    }
+
+    const char *dirpath = argv[1];
+
+    if (is_mounted(dirpath)) {
+        printf("Directory '%s' is mounted.\n", dirpath);
+    } else {
+        printf("Directory '%s' is not mounted.\n", dirpath);
+    }
+
+    return 0;
+}
+```
\ No newline at end of file
diff --git a/middleware/IpcConfig/src/IpcConfigImpl.cpp b/middleware/IpcConfig/src/IpcConfigImpl.cpp
index d480dbf..417ef36 100644
--- a/middleware/IpcConfig/src/IpcConfigImpl.cpp
+++ b/middleware/IpcConfig/src/IpcConfigImpl.cpp
@@ -466,12 +466,9 @@ void IpcConfigImpl::ReadingConfigThread(void)
         *lastSlash = '\0';
     }
     mThreadRuning = true;
-    DIR *dir = nullptr;
     LogInfo("Reading config thread is running, dirPath = %s\n", dirPath);
     while (mThreadRuning) {
-        dir = opendir(dirPath);
-        if (nullptr != dir) {
-            closedir(dir);
+        if (CheckConfigPathMounted() == true) {
             memset(&mAllData, 0, sizeof(Config_s));
             mCfg = OpenConfigFile(IPC_CONFIG_FILE_PATH);
             if (nullptr == mCfg) {
@@ -875,9 +872,33 @@ void IpcConfigImpl::ReadAllConfigParameters(void)
     //     ConfigSetFloat(mCfg, "test_float", mAllData.testFloat);
     // }
 
-    // if (CONFIG_HAS_CHANGED == mCfgChanged) {
-    //     LogInfo("Save the config file.\n");
-    //     mCfgChanged = CONFIG_HAS_NOT_CHANGED;
-    //     ConfigSaveFile(mCfg);
-    // }
+    if (CONFIG_HAS_CHANGED == mCfgChanged) {
+        LogInfo("Save the config file.\n");
+        mCfgChanged = CONFIG_HAS_NOT_CHANGED;
+        ConfigSaveFile(mCfg);
+    }
+}
+bool IpcConfigImpl::CheckConfigPathMounted(void)
+{
+    FILE *fp;
+    char line[1024];
+    char mount_point[1024] = {0};
+
+    fp = fopen("/proc/mounts", "r");
+    if (fp == NULL) {
+        perror("Error opening /proc/mounts");
+        return false;
+    }
+
+    while (fgets(line, sizeof(line), fp) != NULL) {
+        if (sscanf(line, "%*s %1023s %*s %*s %*d %*d\n", mount_point) == 1) {
+            // LogInfo("mount_point: %s\n", mount_point);
+            if (strcmp("/userdata", mount_point) == 0) {
+                fclose(fp);
+                return true; // mounted
+            }
+        }
+    }
+    fclose(fp);
+    return false; // unmounted
 }
diff --git a/middleware/IpcConfig/src/IpcConfigImpl.h b/middleware/IpcConfig/src/IpcConfigImpl.h
index abc8a4e..6c44334 100644
--- a/middleware/IpcConfig/src/IpcConfigImpl.h
+++ b/middleware/IpcConfig/src/IpcConfigImpl.h
@@ -112,6 +112,7 @@ private:
     void ReadingConfigThread(void);
     void InitConfigMap(void);
     void ReadAllConfigParameters(void);
+    virtual bool CheckConfigPathMounted(void);
 
 private:
     std::mutex mMutex;