diff --git a/include/os/osDir.h b/include/os/osDir.h
index 01ec24f235..e328c42063 100644
--- a/include/os/osDir.h
+++ b/include/os/osDir.h
@@ -23,7 +23,7 @@ extern "C" {
 void    taosRemoveDir(const char *dirname);
 int32_t taosDirExist(char *dirname);
 int32_t taosMkDir(const char *dirname);
-void    taosRemoveOldFiles(char *dirname, int32_t keepDays);
+void    taosRemoveOldFiles(const char *dirname, int32_t keepDays);
 int32_t taosExpandDir(const char *dirname, char *outname, int32_t maxlen);
 int32_t taosRealPath(char *dirname, int32_t maxlen);
 
diff --git a/include/os/osEnv.h b/include/os/osEnv.h
index c7c8ba9053..29898953e6 100644
--- a/include/os/osEnv.h
+++ b/include/os/osEnv.h
@@ -22,36 +22,31 @@
 extern "C" {
 #endif
 
-typedef struct SOsEnv {
-  char       dataDir[PATH_MAX];
-  char       logDir[PATH_MAX];
-  char       tempDir[PATH_MAX];
-  SDiskSpace dataSpace;
-  SDiskSpace logSpace;
-  SDiskSpace tempSpace;
-  char       osName[16];
-  char       timezone[TD_TIMEZONE_LEN];
-  char       locale[TD_LOCALE_LEN];
-  char       charset[TD_CHARSET_LEN];
-  int8_t     daylight;
-} SOsEnv;
+typedef struct SOsEnv SOsEnv;
 
 extern char configDir[];
 
-void    osInit();
-SOsEnv *osEnv();
-void    osUpdate();
-bool    osLogSpaceAvailable();
-char   *osLogDir();
-char   *osTempDir();
-char   *osDataDir();
-char   *osName();
-char   *osTimezone();
-int8_t  osDaylight();
-char   *osLocale();
-char   *osCharset();
+void osInit();
+void osUpdate();
 
-void osSetTimezone(const char*timezone);
+bool   osLogSpaceAvailable();
+int8_t osDaylight();
+
+const char *osLogDir();
+const char *osTempDir();
+const char *osDataDir();
+const char *osName();
+const char *osTimezone();
+const char *osLocale();
+const char *osCharset();
+
+void osSetLogDir(const char *logDir);
+void osSetTempDir(const char *tempDir);
+void osSetDataDir(const char *dataDir);
+void osSetLogReservedSpace(float sizeInGB);
+void osSetTempReservedSpace(float sizeInGB);
+void osSetDataReservedSpace(float sizeInGB);
+void osSetTimezone(const char *timezone);
 
 #ifdef __cplusplus
 }
diff --git a/source/client/src/clientCfg.c b/source/client/src/clientCfg.c
index f2020ddf95..d1dafbed5c 100644
--- a/source/client/src/clientCfg.c
+++ b/source/client/src/clientCfg.c
@@ -67,7 +67,7 @@ static int32_t tscAddLogCfg(SConfig *pCfg) {
 }
 
 static int32_t tscSetLogCfg(SConfig *pCfg) {
-  tstrncpy(osLogDir(), cfgGetItem(pCfg, "logDir")->str, PATH_MAX);
+  osSetLogDir(cfgGetItem(pCfg, "logDir")->str);
   tsAsyncLog = cfgGetItem(pCfg, "asyncLog")->bval;
   tsNumOfLogLines = cfgGetItem(pCfg, "numOfLogLines")->i32;
   tsLogKeepDays = cfgGetItem(pCfg, "logKeepDays")->i32;
diff --git a/source/dnode/mgmt/daemon/src/dmnCfg.c b/source/dnode/mgmt/daemon/src/dmnCfg.c
index 05edf83638..65c3e67d97 100644
--- a/source/dnode/mgmt/daemon/src/dmnCfg.c
+++ b/source/dnode/mgmt/daemon/src/dmnCfg.c
@@ -46,11 +46,10 @@ static int32_t dmnAddDirCfg(SConfig *pCfg) {
 }
 
 static int32_t dmnCheckDirCfg(SConfig *pCfg) {
-  SOsEnv *pEnv = osEnv();
-  tstrncpy(pEnv->dataDir, cfgGetItem(pCfg, "dataDir")->str, PATH_MAX);
-  tstrncpy(pEnv->tempDir, cfgGetItem(pCfg, "tempDir")->str, PATH_MAX);
-  pEnv->dataSpace.reserved = cfgGetItem(pCfg, "minimalDataDirGB")->fval;
-  pEnv->tempSpace.reserved = cfgGetItem(pCfg, "minimalTempDirGB")->fval;
+  osSetDataDir(cfgGetItem(pCfg, "dataDir")->str);
+  osSetTempDir(cfgGetItem(pCfg, "tempDir")->str);
+  osSetTempReservedSpace(cfgGetItem(pCfg, "minimalDataDirGB")->fval);
+  osSetDataReservedSpace(cfgGetItem(pCfg, "minimalTempDirGB")->fval);
   return 0;
 }
 
diff --git a/source/dnode/mgmt/daemon/src/dmnLog.c b/source/dnode/mgmt/daemon/src/dmnLog.c
index 5079cd907a..147357c845 100644
--- a/source/dnode/mgmt/daemon/src/dmnLog.c
+++ b/source/dnode/mgmt/daemon/src/dmnLog.c
@@ -41,9 +41,8 @@ int32_t dmnAddLogCfg(SConfig *pCfg) {
 }
 
 int32_t dmnSetLogCfg(SConfig *pCfg) {
-  SOsEnv *pEnv = osEnv();
-  tstrncpy(pEnv->logDir, cfgGetItem(pCfg, "logDir")->str, PATH_MAX);
-  pEnv->logSpace.reserved = cfgGetItem(pCfg, "minimalLogDirGB")->fval;
+  osSetLogDir(cfgGetItem(pCfg, "logDir")->str);
+  osSetLogReservedSpace(cfgGetItem(pCfg, "minimalLogDirGB")->fval);
   tsAsyncLog = cfgGetItem(pCfg, "asyncLog")->bval;
   tsNumOfLogLines = cfgGetItem(pCfg, "numOfLogLines")->i32;
   tsLogKeepDays = cfgGetItem(pCfg, "logKeepDays")->i32;
diff --git a/source/dnode/mgmt/impl/test/sut/src/sut.cpp b/source/dnode/mgmt/impl/test/sut/src/sut.cpp
index 53b27ffaff..5d2abd86c3 100644
--- a/source/dnode/mgmt/impl/test/sut/src/sut.cpp
+++ b/source/dnode/mgmt/impl/test/sut/src/sut.cpp
@@ -33,7 +33,7 @@ void Testbase::InitLog(const char* path) {
 
   taosRemoveDir(path);
   taosMkDir(path);
-  tstrncpy(osLogDir(), path, PATH_MAX);
+  osSetLogDir(path);
   if (taosInitLog("taosdlog", 1) != 0) {
     printf("failed to init log file\n");
   }
diff --git a/source/libs/index/test/fstUT.cc b/source/libs/index/test/fstUT.cc
index af8ee747bf..0e16f57f58 100644
--- a/source/libs/index/test/fstUT.cc
+++ b/source/libs/index/test/fstUT.cc
@@ -30,7 +30,7 @@ static void EnvInit() {
   taosRemoveDir(path.c_str());
   taosMkDir(path.c_str());
   // init log file
-  tstrncpy(osLogDir(), path.c_str(), PATH_MAX);
+  osSetLogDir( path.c_str());
   if (taosInitLog("tindex.idx", 1) != 0) {
     printf("failed to init log");
   }
diff --git a/source/libs/transport/test/transUT.cc b/source/libs/transport/test/transUT.cc
index f2b1764dc6..8a8a6de5e1 100644
--- a/source/libs/transport/test/transUT.cc
+++ b/source/libs/transport/test/transUT.cc
@@ -155,7 +155,7 @@ class TransObj {
     taosRemoveDir(path.c_str());
     taosMkDir(path.c_str());
 
-    tstrncpy(osLogDir(), path.c_str(), PATH_MAX);
+    osSetLogDir(path.c_str());
     if (taosInitLog("taosdlog", 1) != 0) {
       printf("failed to init log file\n");
     }
diff --git a/source/os/src/osDir.c b/source/os/src/osDir.c
index 8fee6a6f7d..c464073e5f 100644
--- a/source/os/src/osDir.c
+++ b/source/os/src/osDir.c
@@ -71,7 +71,7 @@ int32_t taosMkDir(const char *dirname) {
   return code;
 }
 
-void taosRemoveOldFiles(char *dirname, int32_t keepDays) {
+void taosRemoveOldFiles(const char *dirname, int32_t keepDays) {
   DIR *dir = opendir(dirname);
   if (dir == NULL) return;
 
diff --git a/source/os/src/osEnv.c b/source/os/src/osEnv.c
index 8dd65fde14..6fad7e4f32 100644
--- a/source/os/src/osEnv.c
+++ b/source/os/src/osEnv.c
@@ -16,8 +16,24 @@
 #define _DEFAULT_SOURCE
 #include "osEnv.h"
 
-SOsEnv env = {0};
-char   configDir[PATH_MAX] = {0};
+extern void taosWinSocketInit();
+char configDir[PATH_MAX] = {0};
+
+typedef struct SOsEnv {
+  char       dataDir[PATH_MAX];
+  char       logDir[PATH_MAX];
+  char       tempDir[PATH_MAX];
+  SDiskSpace dataSpace;
+  SDiskSpace logSpace;
+  SDiskSpace tempSpace;
+  char       osName[16];
+  char       timezone[TD_TIMEZONE_LEN];
+  char       locale[TD_LOCALE_LEN];
+  char       charset[TD_CHARSET_LEN];
+  int8_t     daylight;
+} SOsEnv;
+
+static SOsEnv env = {0};
 
 SOsEnv *osEnv() { return &env; }
 
@@ -39,26 +55,29 @@ void osUpdate() {
   }
 }
 
-bool osLogSpaceAvailable() { return env.logSpace.reserved < env.logSpace.size.avail; }
-
-char *osLogDir() { return env.logDir; }
-char *osTempDir() { return env.tempDir; }
-char *osDataDir() { return env.dataDir; }
-char *osName() { return env.osName; }
-char *osTimezone() { return env.timezone; }
-char *osLocale() { return env.locale; }
-char *osCharset() { return env.charset; }
-
+bool   osLogSpaceAvailable() { return env.logSpace.reserved <= env.logSpace.size.avail; }
 int8_t osDaylight() { return env.daylight; }
 
+const char *osLogDir() { return env.logDir; }
+const char *osTempDir() { return env.tempDir; }
+const char *osDataDir() { return env.dataDir; }
+const char *osName() { return env.osName; }
+const char *osTimezone() { return env.timezone; }
+const char *osLocale() { return env.locale; }
+const char *osCharset() { return env.charset; }
+
+void osSetLogDir(const char *logDir) { tstrncpy(env.logDir, logDir, PATH_MAX); }
+void osSetTempDir(const char *tempDir) { tstrncpy(env.tempDir, tempDir, PATH_MAX); }
+void osSetDataDir(const char *dataDir) { tstrncpy(env.dataDir, dataDir, PATH_MAX); }
+void osSetLogReservedSpace(float sizeInGB) { env.logSpace.reserved = sizeInGB; }
+void osSetTempReservedSpace(float sizeInGB) { env.tempSpace.reserved = sizeInGB; }
+void osSetDataReservedSpace(float sizeInGB) { env.dataSpace.reserved = sizeInGB; }
 void osSetTimezone(const char *timezone) { taosSetSystemTimezone(timezone, env.timezone, &env.daylight); }
 
-#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
-
-extern taosWinSocketInit();
-
 void osInit() {
   srand(taosSafeRand());
+
+#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
   taosWinSocketInit();
 
   const char *tmpDir = getenv("tmp");
@@ -74,27 +93,20 @@ void osInit() {
   strcpy(env.logDir, "C:\\TDengine\\log");
   strcpy(env.tempDir, "C:\\Windows\\Temp");
   strcpy(env.osName, "Windows");
-}
 
 #elif defined(_TD_DARWIN_64)
-
-void osInit() {
-  srand(taosSafeRand());
   strcpy(configDir, "/tmp/taosd");
   strcpy(env.dataDir, "/usr/local/var/lib/taos");
   strcpy(env.logDir, "/usr/local/var/log/taos");
   strcpy(env.tempDir, "/usr/local/etc/taos");
   strcpy(env.osName, "Darwin");
-}
-#else
 
-void osInit() {
-  srand(taosSafeRand());
+#else
   strcpy(configDir, "/etc/taos");
   strcpy(env.dataDir, "/var/lib/taos");
   strcpy(env.logDir, "/var/log/taos");
   strcpy(env.tempDir, "/tmp");
   strcpy(env.osName, "Linux");
-}
 
-#endif
\ No newline at end of file
+#endif
+}
\ No newline at end of file
diff --git a/tools/shell/src/shellLinux.c b/tools/shell/src/shellLinux.c
index 0526ebb442..caba986ce7 100644
--- a/tools/shell/src/shellLinux.c
+++ b/tools/shell/src/shellLinux.c
@@ -184,7 +184,6 @@ static void parse_args(
     for (int i = 1; i < argc; i++) {
         if ((strncmp(argv[i], "-p", 2) == 0)
               || (strncmp(argv[i], "--password", 10) == 0)) {
-            strcpy(osName(), "Linux");
             printf(LINUXCLIENT_VERSION, osName(), taos_get_client_info());
             if ((strlen(argv[i]) == 2)
                   || (strncmp(argv[i], "--password", 10) == 0)) {