fix bug

src/client/src/tscSql.c

@@ -52,7 +52,9 @@ static bool validPassword(const char* passwd) {
 
 static SSqlObj *taosConnectImpl(const char *ip, const char *user, const char *pass, const char *auth, const char *db,
                          uint16_t port, void (*fp)(void *, TAOS_RES *, int), void *param, TAOS **taos) {
-  taos_init();
+  if (taos_init()) {
+    return NULL;
+  }
 
   if (!validUserName(user)) {
     terrno = TSDB_CODE_TSC_INVALID_USER_LENGTH;

src/client/src/tscSystem.c

@@ -47,6 +47,7 @@ void      *tscRpcCache;            // cache to keep rpc obj
 int32_t   tscNumOfThreads = 1;     // num of rpc threads  
 static    pthread_mutex_t rpcObjMutex; // mutex to protect open the rpc obj concurrently 
 static pthread_once_t tscinit = PTHREAD_ONCE_INIT;
+static volatile int tscInitRes = 0;
 
 void tscCheckDiskUsage(void *UNUSED_PARAM(para), void *UNUSED_PARAM(param)) {
   taosGetDisk();
@@ -137,7 +138,11 @@ void taos_init_imp(void) {
     }
 
     taosReadGlobalCfg();
-    taosCheckGlobalCfg();
+    if (taosCheckGlobalCfg()) {
+      tscInitRes = -1;
+      return;
+    }
+    
     taosInitNotes();
 
     rpcInit();
@@ -159,6 +164,7 @@ void taos_init_imp(void) {
   tscQhandle = taosInitScheduler(queueSize, tscNumOfThreads, "tsc");
   if (NULL == tscQhandle) {
     tscError("failed to init scheduler");
+    tscInitRes = -1;
     return;
   }
 
@@ -187,7 +193,7 @@ void taos_init_imp(void) {
   tscDebug("client is initialized successfully");
 }
 
-void taos_init() { pthread_once(&tscinit, taos_init_imp); }
+int taos_init() {     pthread_once(&tscinit, taos_init_imp);  return tscInitRes;}
 
 // this function may be called by user or system, or by both simultaneously.
 void taos_cleanup(void) {

src/common/src/tglobal.c

@@ -373,6 +373,23 @@ static void taosCheckDataDirCfg() {
   }
 }
 
+static int32_t taosCheckTmpDir(void) {
+  if (strlen(tsTempDir) <= 0){
+    uError("tempDir is not set");
+    return -1;
+  }
+
+  DIR *dir = opendir(tsTempDir);
+  if (dir == NULL) {
+    uError("can not open tempDir:%s, error:%s", tsTempDir, strerror(errno));
+    return -1;
+  }
+
+  closedir(dir);
+
+  return 0;
+}
+
 static void doInitGlobalConfig(void) {
   osInit();
   srand(taosSafeRand());
@@ -1488,6 +1505,11 @@ int32_t taosCheckGlobalCfg() {
   }
 
   taosCheckDataDirCfg();
+
+  if (taosCheckTmpDir()) {
+    return -1;
+  }
+  
   taosGetSystemInfo();
 
   tsSetLocale();

src/inc/taos.h

@@ -68,7 +68,7 @@ typedef struct taosField {
   #define DLL_EXPORT 
 #endif
 
-DLL_EXPORT void  taos_init();
+DLL_EXPORT int  taos_init();
 DLL_EXPORT void  taos_cleanup(void);
 DLL_EXPORT int   taos_options(TSDB_OPTION option, const void *arg, ...);
 DLL_EXPORT TAOS *taos_connect(const char *ip, const char *user, const char *pass, const char *db, uint16_t port);

src/kit/shell/src/shellEngine.c

@@ -76,7 +76,11 @@ TAOS *shellInit(SShellArguments *args) {
     args->user = TSDB_DEFAULT_USER;
   }
 
-  taos_init();
+  if (taos_init()) {
+    printf("failed to init taos\n");
+    fflush(stdout);
+    return NULL;
+  }
 
   // Connect to the database.
   TAOS *con = NULL;

src/kit/shell/src/shellMain.c

@@ -110,7 +110,10 @@ int main(int argc, char* argv[]) {
   }
 
   if (args.netTestRole && args.netTestRole[0] != 0) {
-    taos_init();
+    if (taos_init()) {
+      printf("Failed to init taos");
+      exit(EXIT_FAILURE);
+    }
     taosNetTest(args.netTestRole, args.host, args.port, args.pktLen);
     exit(0);
   }

src/kit/taosdemo/taosdemo.c

@@ -711,7 +711,11 @@ int main(int argc, char *argv[]) {
   fprintf(fp, "###################################################################\n\n");
   fprintf(fp, "|  WRecords  | Records/Second | Requests/Second |  WLatency(ms) |\n");
 
-  taos_init();
+  if (taos_init()) {
+    fprintf(stderr, "Failed to init taos\n");
+    return 1;
+  }
+  
   TAOS *taos = taos_connect(ip_addr, user, pass, NULL, port);
   if (taos == NULL) {
     fprintf(stderr, "Failed to connect to TDengine, reason:%s\n", taos_errstr(NULL));

src/kit/taosdemox/taosdemox.c

@@ -1971,7 +1971,11 @@ static int createSuperTable(TAOS * taos, char* dbName, SSuperTable*  superTbls,
 static int createDatabases() {
   TAOS * taos = NULL;
   int    ret = 0;
-  taos_init();
+  if (taos_init()) {
+    fprintf(stderr, "Failed to init taos\n");
+    exit(-1);
+  }
+  
   taos = taos_connect(g_Dbs.host, g_Dbs.user, g_Dbs.password, NULL, g_Dbs.port);
   if (taos == NULL) {
     fprintf(stderr, "Failed to connect to TDengine, reason:%s\n", taos_errstr(NULL));
@@ -4496,7 +4500,11 @@ void *subQueryProcess(void *sarg) {
 
 int queryTestProcess() {
   TAOS * taos = NULL;  
-  taos_init();
+  if (taos_init()) {
+    fprintf(stderr, "Failed to init taos\n");
+    exit(-1);
+  }
+  
   taos = taos_connect(g_queryInfo.host, g_queryInfo.user, g_queryInfo.password, NULL, g_queryInfo.port);
   if (taos == NULL) {
     fprintf(stderr, "Failed to connect to TDengine, reason:%s\n", taos_errstr(NULL));
@@ -4772,7 +4780,11 @@ int subscribeTestProcess() {
   }
 
   TAOS * taos = NULL;  
-  taos_init();
+  if (taos_init()) {
+    fprintf(stderr, "Failed to init taos\n");
+    exit(-1);
+  }
+  
   taos = taos_connect(g_queryInfo.host, g_queryInfo.user, g_queryInfo.password, g_queryInfo.dbName, g_queryInfo.port);
   if (taos == NULL) {
     fprintf(stderr, "Failed to connect to TDengine, reason:%s\n", taos_errstr(NULL));

src/plugins/monitor/src/monMain.c

@@ -103,7 +103,9 @@ int32_t monInitSystem() {
 }
 
 int32_t monStartSystem() {
-  taos_init();
+  if (taos_init()) {
+    return -1;
+  }
   tsMonitor.start = 1;
   monExecuteSQLFp = monExecuteSQL;
   monInfo("monitor module start");

tests/examples/c/demo.c

@@ -62,7 +62,10 @@ int main(int argc, char *argv[]) {
   }
 
   // init TAOS
-  taos_init();
+  if (taos_init()) {
+    exit(1);
+  }
+  
   TAOS *taos = taos_connect(argv[1], "root", "taosdata", NULL, 0);
   if (taos == NULL) {
     printf("failed to connect to server, reason:%s\n", "null taos"/*taos_errstr(taos)*/);

tests/examples/c/prepare.c

@@ -23,7 +23,10 @@ int main(int argc, char *argv[])
   }
 
   // init TAOS
-  taos_init();
+  if (taos_init()) {
+    printf("failed to init taos\n");
+    exit(1);
+  }
 
   taos = taos_connect(argv[1], "root", "taosdata", NULL, 0);
   if (taos == NULL) {

tests/examples/c/stream.c

@@ -55,7 +55,10 @@ int main(int argc, char *argv[])
   } 
 
   // init TAOS
-  taos_init();
+  if (taos_init()) {
+    printf("failed to init taos\n");
+    exit(1);
+  }
 
   strcpy(db_name, argv[2]);
   strcpy(tbl_name, argv[3]);

tests/examples/c/subscribe.c

@@ -217,7 +217,10 @@ int main(int argc, char *argv[]) {
   }
 
   // init TAOS
-  taos_init();
+  if (taos_init()) {
+    printf("failed to init taos\n");
+    exit(1);
+  }
 
   TAOS* taos = taos_connect(host, user, passwd, "", 0);
   if (taos == NULL) {

tests/tsim/src/simSystem.c

@@ -81,7 +81,9 @@ char *simParseHostName(char *varName) {
 }
 
 bool simSystemInit() {
-  taos_init();
+  if (taos_init()) {
+    return false;
+  }
   taosGetFqdn(simHostName);
   simInitsimCmdList();
   memset(simScriptList, 0, sizeof(SScript *) * MAX_MAIN_SCRIPT_NUM);