Fix build

src/Common/renameat2.cpp

@@ -11,6 +11,30 @@
 #include <linux/fs.h>
 #endif
 
+/// For old versions of libc.
+#if !defined(RENAME_NOREPLACE)
+    #define RENAME_NOREPLACE 1
+#endif
+
+#if !defined(RENAME_EXCHANGE)
+    #define RENAME_EXCHANGE 2
+#endif
+
+#if !defined(__NR_renameat2)
+    #if defined(__x86_64__)
+        #define __NR_renameat2 316
+    #elif defined(__aarch64__)
+        #define __NR_renameat2 276
+    #elif defined(__ppc64__)
+        #define __NR_renameat2 357
+    #elif defined(__riscv)
+        #define __NR_renameat2 276
+    #else
+        #error "Unsupported architecture"
+    #endif
+#endif
+
+
 namespace fs = std::filesystem;
 
 namespace DB
@@ -27,17 +51,11 @@ namespace ErrorCodes
 
 static bool supportsRenameat2Impl()
 {
-#if defined(__NR_renameat2)
     VersionNumber renameat2_minimal_version(3, 15, 0);
     VersionNumber linux_version(Poco::Environment::osVersion());
     return linux_version >= renameat2_minimal_version;
-#else
-    return false;
-#endif
 }
 
-#if defined(__NR_renameat2)
-
 static bool renameat2(const std::string & old_path, const std::string & new_path, int flags)
 {
     if (!supportsRenameat2())
@@ -69,16 +87,6 @@ static bool renameat2(const std::string & old_path, const std::string & new_path
     throwFromErrnoWithPath("Cannot rename " + old_path + " to " + new_path, new_path, ErrorCodes::SYSTEM_ERROR);
 }
 
-#else
-#define RENAME_NOREPLACE -1
-#define RENAME_EXCHANGE -1
-
-static bool renameat2(const std::string &, const std::string &, int)
-{
-    return false;
-}
-
-#endif
 
 static void renameNoReplaceFallback(const std::string & old_path, const std::string & new_path)
 {

src/IO/ThreadPoolReader.cpp

@@ -30,6 +30,8 @@
         #define SYS_preadv2 286
     #elif defined(__ppc64__)
         #define SYS_preadv2 380
+    #elif defined(__riscv)
+        #define SYS_preadv2 286
     #else
         #error "Unsupported architecture"
     #endif