From 6667446db3979a5c7930f0deaf40936a6b992f93 Mon Sep 17 00:00:00 2001
From: afwerar <1296468573@qq.com>
Date: Wed, 9 Mar 2022 10:46:31 +0800
Subject: [PATCH] [TD-13876]<fix>: forbid big-end machine.

---
 include/os/osSysinfo.h                 | 1 +
 source/dnode/mgmt/daemon/src/dmnMain.c | 5 +++++
 source/os/src/osSysinfo.c              | 9 +++++++++
 3 files changed, 15 insertions(+)

diff --git a/include/os/osSysinfo.h b/include/os/osSysinfo.h
index 1ebad370b5..54a3cfef7b 100644
--- a/include/os/osSysinfo.h
+++ b/include/os/osSysinfo.h
@@ -33,6 +33,7 @@ typedef struct {
   SDiskSize size;
 } SDiskSpace;
 
+bool    taosCheckSystemIsSmallEnd();
 void    taosGetSystemInfo();
 int32_t taosGetEmail(char *email, int32_t maxLen);
 int32_t taosGetOsReleaseName(char *releaseName, int32_t maxLen);
diff --git a/source/dnode/mgmt/daemon/src/dmnMain.c b/source/dnode/mgmt/daemon/src/dmnMain.c
index df705898ca..7ba272453c 100644
--- a/source/dnode/mgmt/daemon/src/dmnMain.c
+++ b/source/dnode/mgmt/daemon/src/dmnMain.c
@@ -97,6 +97,11 @@ int32_t dmnRunDnode() {
 }
 
 int main(int argc, char const *argv[]) {
+  if (!taosCheckSystemIsSmallEnd()) {
+    uError("TDengine does not run on non-small-end machines.");
+    return -1;
+  }
+
   if (dmnParseOption(argc, argv) != 0) {
     return -1;
   }
diff --git a/source/os/src/osSysinfo.c b/source/os/src/osSysinfo.c
index ff9d5fb71b..02d7e6c0e9 100644
--- a/source/os/src/osSysinfo.c
+++ b/source/os/src/osSysinfo.c
@@ -16,6 +16,15 @@
 #define _DEFAULT_SOURCE
 #include "os.h"
 
+bool taosCheckSystemIsSmallEnd() {
+    union check{
+        int16_t i;
+        char ch[2];
+    }c;
+    c.i=1;
+    return c.ch[0]==1;
+}
+
 #if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
 
 /*