Merge 10.4 into 10.5

mysql-test/suite/encryption/t/innodb_import.test

 --source include/have_innodb.inc
--- source include/have_example_key_management_plugin.inc
+--source include/have_example_key_management_plugin.inc
+--source include/innodb_checksum_algorithm.inc
 --echo #
 --echo # MDEV-26131 SEGV in ha_innobase::discard_or_import_tablespace
 --echo #

mysql-test/suite/innodb/t/full_crc32_import.opt

---innodb_checksum_algorithm=full_crc32

mysql-test/suite/innodb/t/full_crc32_import.test

@@ -138,6 +138,7 @@ EOF
 ALTER TABLE t1 IMPORT TABLESPACE;
 --enable_warnings
 ALTER TABLE t1 DROP INDEX idx1;
+--replace_regex /opening '.*\/test\//opening '.\/test\//
 ALTER TABLE t1 IMPORT TABLESPACE;
 --disable_warnings
 SHOW CREATE TABLE t1;

storage/innobase/row/row0import.cc

@@ -695,7 +695,7 @@ struct FetchIndexRootPages : public AbstractCallback {
 	@param block	Block to use for IO
 	@retval DB_SUCCESS or error code */
 	dberr_t run(const fil_iterator_t& iter,
-		    buf_block_t* block) UNIV_NOTHROW;
+		    buf_block_t* block) UNIV_NOTHROW override;
 
 	/** Called for each block as it is read from the file.
 	@param block block to convert, it is not from the buffer pool.
@@ -866,7 +866,8 @@ class PageConverter : public AbstractCallback {
 		}
 	}
 
-	dberr_t run(const fil_iterator_t& iter, buf_block_t* block) UNIV_NOTHROW
+	dberr_t run(const fil_iterator_t& iter,
+		    buf_block_t* block) UNIV_NOTHROW override
 	{
 		return fil_iterate(iter, block, *this);
 	}
@@ -3435,6 +3436,8 @@ dberr_t FetchIndexRootPages::run(const fil_iterator_t& iter,
 #endif
     srv_page_size;
   byte* page_compress_buf = static_cast<byte*>(malloc(buf_size));
+  const bool full_crc32 = fil_space_t::full_crc32(m_space_flags);
+  bool skip_checksum_check = false;
   ut_ad(!srv_read_only_mode);
 
   if (!page_compress_buf)
@@ -3468,17 +3471,22 @@ dberr_t FetchIndexRootPages::run(const fil_iterator_t& iter,
   }
 
   block->page.id_.set_page_no(3);
-  switch (fil_page_get_type(readptr)) {
-  case FIL_PAGE_PAGE_COMPRESSED:
-  case FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED:
-    if (block->page.zip.data)
-      goto page_corrupted;
-    page_compressed= true;
+  if (full_crc32 && fil_space_t::is_compressed(m_space_flags))
+    page_compressed= buf_page_is_compressed(readptr, m_space_flags);
+  else
+  {
+    switch (fil_page_get_type(readptr)) {
+    case FIL_PAGE_PAGE_COMPRESSED:
+    case FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED:
+      if (block->page.zip.data)
+        goto page_corrupted;
+      page_compressed= true;
+    }
   }
 
   if (encrypted)
   {
-    if (!fil_space_verify_crypt_checksum(readptr, zip_size))
+    if (!buf_page_verify_crypt_checksum(readptr, m_space_flags))
       goto page_corrupted;
 
     if (!fil_space_decrypt(get_space_id(), iter.crypt_data, readptr,
@@ -3487,15 +3495,21 @@ dberr_t FetchIndexRootPages::run(const fil_iterator_t& iter,
       goto func_exit;
   }
 
+  /* For full_crc32 format, skip checksum check
+  after decryption. */
+  skip_checksum_check= full_crc32 && encrypted;
+
   if (page_compressed)
   {
-    ulint compress_length= fil_page_decompress(page_compress_buf, readptr,
+    ulint compress_length= fil_page_decompress(page_compress_buf,
+                                               readptr,
                                                m_space_flags);
     ut_ad(compress_length != srv_page_size);
     if (compress_length == 0)
       goto page_corrupted;
   }
-  else if (buf_page_is_corrupted(false, readptr, m_space_flags))
+  else if (!skip_checksum_check
+           && buf_page_is_corrupted(false, readptr, m_space_flags))
     goto page_corrupted;
 
   err= this->operator()(block);