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include/os/osFile.h

@@ -54,7 +54,7 @@ int32_t taosFtruncateFile(FileFd fd, int64_t length);
 int32_t taosFsyncFile(FileFd fd);
 
 int64_t taosReadFile(FileFd fd, void *buf, int64_t count);
-int64_t taosWriteFile(FileFd fd, void *buf, int64_t count);
+int64_t taosWriteFile(FileFd fd, const void *buf, int64_t count);
 
 void taosCloseFile(FileFd fd);
 

source/os/src/osFile.c

@@ -120,7 +120,7 @@ int64_t taosReadFile(FileFd fd, void *buf, int64_t count) {
   return count;
 }
 
-int64_t taosWriteFile(FileFd fd, void *buf, int64_t n) {
+int64_t taosWriteFile(FileFd fd, const void *buf, int64_t n) {
   int64_t nleft = n;
   int64_t nwritten = 0;
   char *  tbuf = (char *)buf;