diff --git a/services/include/init_cmds.h b/services/include/init_cmds.h
index 469ef4f..232f24a 100644
--- a/services/include/init_cmds.h
+++ b/services/include/init_cmds.h
@@ -50,7 +50,7 @@ struct CmdArgs {
     char **argv;
 };
 
-int GetParamValue(char *symValue, char *paramValue, unsigned int paramLen);
+int GetParamValue(const char *symValue, char *paramValue, unsigned int paramLen);
 struct CmdArgs* GetCmd(const char *cmdContent, const char *delim, int argsCount);
 void FreeCmd(struct CmdArgs **cmd);
 
diff --git a/services/log/init_log.c b/services/log/init_log.c
index 0e58910..aa03079 100644
--- a/services/log/init_log.c
+++ b/services/log/init_log.c
@@ -53,7 +53,7 @@ void InitToHiLog(const char *tag, LogLevel logLevel, const char *fmt, ...)
         return;
     }
     if (tag == NULL) {
-        return;
+        tag = "Init";
     }
     va_list list;
     va_start(list, fmt);
diff --git a/services/src/device.c b/services/src/device.c
index 7464d15..4c6c88c 100644
--- a/services/src/device.c
+++ b/services/src/device.c
@@ -22,8 +22,8 @@
 #include <unistd.h>
 #include "init_log.h"
 
-#define DEFAULT_RW_MODE 0666
-#define DEFAULT_NO_AUTHORITY_MODE 0600
+#define DEFAULT_RW_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IRGRP | S_IROTH | S_IWOTH
+#define DEFAULT_NO_AUTHORITY_MODE S_IWUSR | S_IRUSR
 #define DEVICE_ID_THIRD 3
 #define DEVICE_ID_EIGHTH 8
 #define DEVICE_ID_NINTH 9
diff --git a/services/src/init_cmds.c b/services/src/init_cmds.c
index b56026b..4e16ba4 100644
--- a/services/src/init_cmds.c
+++ b/services/src/init_cmds.c
@@ -42,7 +42,7 @@
 #include "init_utils.h"
 #include "securec.h"
 
-#define DEFAULT_DIR_MODE 0755  // mkdir, default mode
+#define DEFAULT_DIR_MODE S_IRWXU | S_IRGRP | S_IXGRP | S_IXOTH | S_IROTH  // mkdir, default mode
 #define SPACES_CNT_IN_CMD_MAX 10   // mount, max number of spaces in cmdline
 #define SPACES_CNT_IN_CMD_MIN 2    // mount, min number of spaces in cmdline
 
@@ -88,7 +88,7 @@ static const char* g_supportedCmds[] = {
 };
 
 #ifndef OHOS_LITE
-int GetParamValue(char *symValue, char *paramValue, unsigned int paramLen)
+int GetParamValue(const char *symValue, char *paramValue, unsigned int paramLen)
 {
     if ((symValue == NULL) || (paramValue == NULL) || (paramLen == 0)) {
         return -1;
@@ -143,7 +143,7 @@ int GetParamValue(char *symValue, char *paramValue, unsigned int paramLen)
 }
 #else
 // For ite ohos, do not support parameter operation. just do string copy
-inline int GetParamValue(char *symValue, char *paramValue, unsigned int paramLen)
+inline int GetParamValue(const char *symValue, char *paramValue, unsigned int paramLen)
 {
     return (strncpy_s(paramValue, paramLen, symValue, strlen(symValue)) == EOK) ? 0 : -1;
 }
@@ -777,7 +777,7 @@ static void DoLoadCfg(const char *path)
         return;
     }
 
-    while (fgets(buf, LOADCFG_BUF_SIZE, fp) != NULL && maxLoop < LOADCFG_MAX_LOOP) {
+    while (fgets(buf, LOADCFG_BUF_SIZE - 1, fp) != NULL && maxLoop < LOADCFG_MAX_LOOP) {
         maxLoop++;
         len = strlen(buf);
         if (len < 1) {
diff --git a/services/src/init_import.c b/services/src/init_import.c
index 08fd54d..f3ae09d 100644
--- a/services/src/init_import.c
+++ b/services/src/init_import.c
@@ -29,6 +29,9 @@ static int ExtractCfgFile(char **cfgFile, char *content)
         return -1;
     }
     size_t cfgFileLen = strlen(content) + MAX_PARAM_VALUE_LEN + 1;
+    if (cfgFileLen <= 0) {
+        return -1;
+    }
     if ((*cfgFile = malloc(cfgFileLen)) == NULL) {
         INIT_LOGW("Failed to allocate memory to import cfg file. err = %d", errno);
         return -1;
diff --git a/services/src/init_reboot.c b/services/src/init_reboot.c
index b059fa4..ef09003 100644
--- a/services/src/init_reboot.c
+++ b/services/src/init_reboot.c
@@ -113,7 +113,7 @@ static int GetMountStatusForMountPoint(const char *mountPoint)
         return 1;
     }
 
-    while (fgets(buffer, sizeof(buffer), fp) != NULL) {
+    while (fgets(buffer, sizeof(buffer) - 1, fp) != NULL) {
         n = strlen(buffer);
         if (buffer[n - 1] == '\n') {
             buffer[n - 1] = '\0';
diff --git a/services/src/init_service.c b/services/src/init_service.c
index 592d98b..2fa60e8 100644
--- a/services/src/init_service.c
+++ b/services/src/init_service.c
@@ -200,14 +200,22 @@ int ServiceStart(Service *service)
             if (service->writepidFiles[i] == NULL) {
                 continue;
             }
-            FILE *fd = fopen(service->writepidFiles[i], "wb");
+            char *realPath = realpath(service->writepidFiles[i], NULL);
+            if (realPath == NULL) {
+                continue;
+            }
+            FILE *fd = fopen(realPath, "wb");
             if (fd == NULL) {
                 INIT_LOGE("start service writepidFiles %s invalid.", service->writepidFiles[i]);
+                free(realPath);
+                realPath = NULL;
                 continue;
             }
             if (fwrite(pidString, 1, strlen(pidString), fd) != strlen(pidString)) {
                  INIT_LOGE("start service writepid error.file:%s pid:%s", service->writepidFiles[i], pidString);
             }
+            free(realPath);
+            realPath = NULL;
             fclose(fd);
             INIT_LOGE("ServiceStart writepid filename=%s, childPid=%s, ok", service->writepidFiles[i],
                 pidString);
diff --git a/services/src/init_service_manager.c b/services/src/init_service_manager.c
index 9cc181b..e3f6a44 100644
--- a/services/src/init_service_manager.c
+++ b/services/src/init_service_manager.c
@@ -178,14 +178,12 @@ static int GetWritepidStrings(const cJSON *curArrItem, Service *curServ)
     }
 
     for (int i = 0; i < writepidCnt; ++i) {
-        if (!cJSON_GetArrayItem(filedJ, i) || !cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i))
-            || strlen(cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i))) <= 0) {      // check all errors
-            INIT_LOGE("GetWritepidStrings, parse item[%d] error.", i);
+        cJSON *item = cJSON_GetArrayItem(filedJ, i);
+        if (item == NULL) {
             return SERVICE_FAILURE;
         }
-
-        char *fieldStr = cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i));
-        if (fieldStr == NULL) {
+        char *fieldStr = cJSON_GetStringValue(item);
+        if ((fieldStr == NULL) || (fieldStr[0] == '\0')) {
             return SERVICE_FAILURE;
         }
         size_t strLen = strlen(fieldStr);
@@ -267,12 +265,14 @@ static int GetGidArray(const cJSON *curArrItem, Service *curServ)        // gid
     curServ->servPerm.gIDCnt = gIDCnt;
     int i = 0;
     for (; i < gIDCnt; ++i) {
-        if (cJSON_GetArrayItem(filedJ, i) == NULL || !cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i))
-            || strlen(cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i))) <= 0) {      // check all errors
-            INIT_LOGE("GetGidArray, parse item[%d] as string, error.", i);
+        cJSON *item = cJSON_GetArrayItem(filedJ, i);
+        if (item == NULL) {
+            break;
+        }
+        char *fieldStr = cJSON_GetStringValue(item);
+        if ((fieldStr == NULL) || (fieldStr[0] == '\0')) {
             break;
         }
-        char *fieldStr = cJSON_GetStringValue(cJSON_GetArrayItem(filedJ, i));
         gid_t gID = DecodeUid(fieldStr);
         if ((gID) == (gid_t)(-1)) {
             INIT_LOGE("GetGidArray, DecodeUid item[%d] error.", i);
@@ -284,11 +284,14 @@ static int GetGidArray(const cJSON *curArrItem, Service *curServ)        // gid
         return SERVICE_SUCCESS;
     }
     for (i = 0; i < gIDCnt; ++i) {
-        if (cJSON_GetArrayItem(filedJ, i) == NULL || !cJSON_IsNumber(cJSON_GetArrayItem(filedJ, i))) {
-            INIT_LOGE("GetGidArray, parse item[%d] as number, error.", i);
+        cJSON *item = cJSON_GetArrayItem(filedJ, i);
+        if (item == NULL) {
             break;
         }
-        gid_t gID = (int)cJSON_GetNumberValue(cJSON_GetArrayItem(filedJ, i));
+        if (!cJSON_IsNumber(item)) {
+            break;
+        }
+        gid_t gID = (int)cJSON_GetNumberValue(item);
         if (gID < 0) {
             INIT_LOGE("GetGidArray gID = %d, error", gID);
             break;
@@ -533,7 +536,7 @@ static int GetServiceSocket(const cJSON* curArrItem, Service* curServ)
     }
     curServ->socketCfg = NULL;
     for (int i = 0; i < sockCnt; ++i) {
-        cJSON* sockJ = cJSON_GetArrayItem(filedJ, i);
+        cJSON *sockJ = cJSON_GetArrayItem(filedJ, i);
         if (!cJSON_IsString(sockJ) || !cJSON_GetStringValue(sockJ)) {
             return SERVICE_FAILURE;
         }
@@ -549,6 +552,8 @@ static int GetServiceSocket(const cJSON* curArrItem, Service* curServ)
         }
         int ret = ParseServiceSocket(tmpStr, SOCK_OPT_NUMS, socktmp);
         if (ret < 0) {
+            free(socktmp);
+            socktmp = NULL;
             return SERVICE_FAILURE;
         }
         if (curServ->socketCfg == NULL) {
diff --git a/services/src/init_service_socket.c b/services/src/init_service_socket.c
index 18fd117..f6d9720 100644
--- a/services/src/init_service_socket.c
+++ b/services/src/init_service_socket.c
@@ -92,7 +92,7 @@ static int CreateSocket(struct ServiceSocket *sockopt)
     return sockopt->sockFd;
 }
 
-static int SetSocketEnv(int fd, char *name)
+static int SetSocketEnv(int fd, const char *name)
 {
     if (name == NULL) {
         return -1;
diff --git a/services/src/init_utils.c b/services/src/init_utils.c
index c7467a3..f1dba38 100644
--- a/services/src/init_utils.c
+++ b/services/src/init_utils.c
@@ -65,11 +65,11 @@ int DecodeUid(const char *name)
         }
         return result;
     } else {
-        struct passwd *pwd = getpwnam(name);
-        if (pwd == NULL) {
+        struct passwd *userInf = getpwnam(name);
+        if (userInf == NULL) {
             return -1;
         }
-        return pwd->pw_uid;
+        return userInf->pw_uid;
     }
 }