- added patch for CVE-2012-2122

[packages/mysql.git] / innodb_buffer_pool_pages_i_s.patch

# name       : innodb_buffer_pool_pages_i_s.patch
# introduced : 11 or before
# maintainer : Yasufumi
#
#!!! notice !!!
# Any small change to this file in the main branch
# should be done or reviewed by the maintainer!
--- a/storage/innobase/buf/buf0buf.c
+++ b/storage/innobase/buf/buf0buf.c
@@ -4163,6 +4163,36 @@
 	mutex_exit(block_mutex);
 }
 
+/********************************************************************//**
+*/
+UNIV_INTERN
+buf_block_t*
+buf_page_from_array(
+/*================*/
+	buf_pool_t*	buf_pool,
+	ulint		n_block)
+{
+	ulint		n_chunks, offset;
+	buf_chunk_t*	chunk;
+
+	ut_a(n_block < buf_pool->curr_size);
+
+	chunk = buf_pool->chunks;
+	offset = n_block;
+
+	for (n_chunks = buf_pool->n_chunks; n_chunks--; chunk++) {
+		if (offset < chunk->size) {
+			return(&chunk->blocks[offset]);
+		}
+
+		offset -= chunk->size;
+	}
+
+	ut_error;
+
+	return(NULL);
+}
+
 /*********************************************************************//**
 Asserts that all file pages in the buffer are in a replaceable state.
 @return	TRUE */
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -12338,6 +12338,9 @@
 i_s_innodb_sys_stats,
 i_s_innodb_table_stats,
 i_s_innodb_index_stats,
+i_s_innodb_buffer_pool_pages,
+i_s_innodb_buffer_pool_pages_index,
+i_s_innodb_buffer_pool_pages_blob,
 i_s_innodb_admin_command
 mysql_declare_plugin_end;
 
--- a/storage/innobase/handler/i_s.cc
+++ b/storage/innobase/handler/i_s.cc
@@ -51,6 +51,7 @@
 #include "trx0sys.h" /* for trx_sys */
 #include "dict0dict.h" /* for dict_sys */
 #include "buf0lru.h" /* for XTRA_LRU_[DUMP/RESTORE] */
+#include "btr0btr.h" /* for btr_page_get_index_id */
 }
 
 #define OK(expr)		\
@@ -4411,3 +4412,713 @@
 	STRUCT_FLD(__reserved1, NULL),
 	STRUCT_FLD(flags, 0UL)
 };
+
+/***********************************************************************
+*/
+static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_fields_info[] =
+{
+	{STRUCT_FLD(field_name,		"page_type"),
+	 STRUCT_FLD(field_length,	64),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_STRING),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_MAYBE_NULL),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"space_id"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"page_no"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"lru_position"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"fix_count"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"flush_type"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	END_OF_ST_FIELD_INFO
+};
+
+static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_index_fields_info[] =
+{
+	{STRUCT_FLD(field_name,		"index_id"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"space_id"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"page_no"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"n_recs"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"data_size"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"hashed"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"access_time"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"modified"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"dirty"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"old"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"lru_position"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"fix_count"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"flush_type"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	END_OF_ST_FIELD_INFO
+};
+
+static ST_FIELD_INFO	i_s_innodb_buffer_pool_pages_blob_fields_info[] =
+{
+	{STRUCT_FLD(field_name,		"space_id"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"page_no"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"compressed"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"part_len"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"next_page_no"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"lru_position"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"fix_count"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	{STRUCT_FLD(field_name,		"flush_type"),
+	 STRUCT_FLD(field_length,	MY_INT64_NUM_DECIMAL_DIGITS),
+	 STRUCT_FLD(field_type,		MYSQL_TYPE_LONGLONG),
+	 STRUCT_FLD(value,		0),
+	 STRUCT_FLD(field_flags,	MY_I_S_UNSIGNED),
+	 STRUCT_FLD(old_name,		""),
+	 STRUCT_FLD(open_method,	SKIP_OPEN_TABLE)},
+
+	END_OF_ST_FIELD_INFO
+};
+
+/***********************************************************************
+Fill the dynamic table information_schema.innodb_buffer_pool_pages. */
+static
+int
+i_s_innodb_buffer_pool_pages_fill(
+/*================*/
+				/* out: 0 on success, 1 on failure */
+	THD*		thd,	/* in: thread */
+	TABLE_LIST*	tables,	/* in/out: tables to fill */
+	COND*		cond)	/* in: condition (ignored) */
+{
+	TABLE*	table	= (TABLE *) tables->table;
+	int	status	= 0;
+	ulint	i;
+
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_fill");
+
+	/* deny access to non-superusers */
+	if (check_global_access(thd, PROCESS_ACL)) {
+
+		DBUG_RETURN(0);
+	}
+
+	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);
+
+	for (i = 0; i < srv_buf_pool_instances; i++) {
+		ulint		n_block;
+		buf_pool_t*	buf_pool;
+
+		buf_pool = buf_pool_from_array(i);
+
+		buf_pool_mutex_enter(buf_pool);
+
+		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
+			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
+			const buf_frame_t*	frame = block->frame;
+
+			char page_type[64];
+
+			switch(fil_page_get_type(frame))
+			{
+				case FIL_PAGE_INDEX:
+					strcpy(page_type, "index");
+					break;
+				case FIL_PAGE_UNDO_LOG:
+					strcpy(page_type, "undo_log");
+					break;
+				case FIL_PAGE_INODE:
+					strcpy(page_type, "inode");
+					break;
+				case FIL_PAGE_IBUF_FREE_LIST:
+					strcpy(page_type, "ibuf_free_list");
+					break;
+				case FIL_PAGE_TYPE_ALLOCATED:
+					strcpy(page_type, "allocated");
+					break;
+				case FIL_PAGE_IBUF_BITMAP:
+					strcpy(page_type, "bitmap");
+					break;
+				case FIL_PAGE_TYPE_SYS:
+					strcpy(page_type, "sys");
+					break;
+				case FIL_PAGE_TYPE_TRX_SYS:
+					strcpy(page_type, "trx_sys");
+					break;
+				case FIL_PAGE_TYPE_FSP_HDR:
+					strcpy(page_type, "fsp_hdr");
+					break;
+				case FIL_PAGE_TYPE_XDES:
+					strcpy(page_type, "xdes");
+					break;
+				case FIL_PAGE_TYPE_BLOB:
+					strcpy(page_type, "blob");
+					break;
+				case FIL_PAGE_TYPE_ZBLOB:
+					strcpy(page_type, "zblob");
+					break;
+				case FIL_PAGE_TYPE_ZBLOB2:
+					strcpy(page_type, "zblob2");
+					break;
+				default:
+					sprintf(page_type, "unknown (type=%li)", fil_page_get_type(frame));
+			}
+
+			field_store_string(table->field[0], page_type);
+			table->field[1]->store(block->page.space);
+			table->field[2]->store(block->page.offset);
+			table->field[3]->store(0);
+			table->field[4]->store(block->page.buf_fix_count);
+			table->field[5]->store(block->page.flush_type);
+
+			if (schema_table_store_record(thd, table)) {
+				status = 1;
+				break;
+			}
+
+		}      
+
+		buf_pool_mutex_exit(buf_pool);
+	}
+
+	DBUG_RETURN(status);
+}
+
+/***********************************************************************
+Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */
+static
+int
+i_s_innodb_buffer_pool_pages_index_fill(
+/*================*/
+				/* out: 0 on success, 1 on failure */
+	THD*		thd,	/* in: thread */
+	TABLE_LIST*	tables,	/* in/out: tables to fill */
+	COND*		cond)	/* in: condition (ignored) */
+{
+	TABLE*	table	= (TABLE *) tables->table;
+	int	status	= 0;
+	ulint	i;
+	index_id_t	index_id;
+
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_fill");
+
+	/* deny access to non-superusers */
+	if (check_global_access(thd, PROCESS_ACL)) {
+
+		DBUG_RETURN(0);
+	}
+
+	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);
+
+	for (i = 0; i < srv_buf_pool_instances; i++) {
+		ulint		n_block;
+		buf_pool_t*	buf_pool;
+
+		buf_pool = buf_pool_from_array(i);
+
+		buf_pool_mutex_enter(buf_pool);
+	
+		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
+			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
+			const buf_frame_t* frame = block->frame;
+
+			if (fil_page_get_type(frame) == FIL_PAGE_INDEX) {
+				index_id = btr_page_get_index_id(frame);
+				table->field[0]->store(index_id);
+				table->field[1]->store(block->page.space);
+				table->field[2]->store(block->page.offset);
+				table->field[3]->store(page_get_n_recs(frame));
+				table->field[4]->store(page_get_data_size(frame));
+				table->field[5]->store(block->index != NULL);
+				table->field[6]->store(block->page.access_time);
+				table->field[7]->store(block->page.newest_modification != 0);
+				table->field[8]->store(block->page.oldest_modification != 0);
+				table->field[9]->store(block->page.old);
+				table->field[10]->store(0);
+				table->field[11]->store(block->page.buf_fix_count);
+				table->field[12]->store(block->page.flush_type);
+
+				if (schema_table_store_record(thd, table)) {
+					status = 1;
+					break;
+				}
+			}      
+		}
+
+		buf_pool_mutex_exit(buf_pool);
+	}
+
+	DBUG_RETURN(status);
+}
+
+/***********************************************************************
+Fill the dynamic table information_schema.innodb_buffer_pool_pages_index. */
+static
+int
+i_s_innodb_buffer_pool_pages_blob_fill(
+/*================*/
+				/* out: 0 on success, 1 on failure */
+	THD*		thd,	/* in: thread */
+	TABLE_LIST*	tables,	/* in/out: tables to fill */
+	COND*		cond)	/* in: condition (ignored) */
+{
+	TABLE*	table	= (TABLE *) tables->table;
+	int	status	= 0;
+	ulint	i;
+
+	ulint		part_len;
+	ulint		next_page_no;
+
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_fill");
+
+	/* deny access to non-superusers */
+	if (check_global_access(thd, PROCESS_ACL)) {
+
+		DBUG_RETURN(0);
+	}
+
+	RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);
+
+	for (i = 0; i < srv_buf_pool_instances; i++) {
+		ulint		n_block;
+		buf_pool_t*	buf_pool;
+
+		buf_pool = buf_pool_from_array(i);
+
+		buf_pool_mutex_enter(buf_pool);
+	
+		for (n_block = 0; n_block < buf_pool->curr_size; n_block++) {
+			buf_block_t*	block = buf_page_from_array(buf_pool, n_block);
+			page_zip_des_t*	block_page_zip = buf_block_get_page_zip(block);
+			const buf_frame_t* frame = block->frame;
+
+			if (fil_page_get_type(frame) == FIL_PAGE_TYPE_BLOB) {
+
+				if (UNIV_LIKELY_NULL(block_page_zip)) {
+					part_len = 0; /* hmm, can't figure it out */
+
+					next_page_no = mach_read_from_4(
+							buf_block_get_frame(block)
+							+ FIL_PAGE_NEXT);        
+				} else {
+					part_len = mach_read_from_4(
+							buf_block_get_frame(block)
+							+ FIL_PAGE_DATA
+							+ 0 /*BTR_BLOB_HDR_PART_LEN*/);
+
+					next_page_no = mach_read_from_4(
+							buf_block_get_frame(block)
+							+ FIL_PAGE_DATA
+							+ 4 /*BTR_BLOB_HDR_NEXT_PAGE_NO*/);
+				}
+
+				table->field[0]->store(block->page.space);
+				table->field[1]->store(block->page.offset);
+				table->field[2]->store(block_page_zip != NULL);
+				table->field[3]->store(part_len);
+
+				if(next_page_no == FIL_NULL)
+				{
+					table->field[4]->store(0);
+				} else {
+					table->field[4]->store(block->page.offset);
+				}
+
+				table->field[5]->store(0);
+				table->field[6]->store(block->page.buf_fix_count);
+				table->field[7]->store(block->page.flush_type);
+
+				if (schema_table_store_record(thd, table)) {
+					status = 1;
+					break;
+				}
+
+			}
+		}      
+
+		buf_pool_mutex_exit(buf_pool);
+	}
+
+	DBUG_RETURN(status);
+}
+
+/***********************************************************************
+Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
+static
+int
+i_s_innodb_buffer_pool_pages_init(
+/*=========*/
+			/* out: 0 on success */
+	void*	p)	/* in/out: table schema object */
+{
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_init");
+	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;
+
+	schema->fields_info = i_s_innodb_buffer_pool_pages_fields_info;
+	schema->fill_table = i_s_innodb_buffer_pool_pages_fill;
+
+	DBUG_RETURN(0);
+}
+
+/***********************************************************************
+Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
+static
+int
+i_s_innodb_buffer_pool_pages_index_init(
+/*=========*/
+			/* out: 0 on success */
+	void*	p)	/* in/out: table schema object */
+{
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_index_init");
+	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;
+
+	schema->fields_info = i_s_innodb_buffer_pool_pages_index_fields_info;
+	schema->fill_table = i_s_innodb_buffer_pool_pages_index_fill;
+
+	DBUG_RETURN(0);
+}
+
+/***********************************************************************
+Bind the dynamic table information_schema.innodb_buffer_pool_pages. */
+static
+int
+i_s_innodb_buffer_pool_pages_blob_init(
+/*=========*/
+			/* out: 0 on success */
+	void*	p)	/* in/out: table schema object */
+{
+	DBUG_ENTER("i_s_innodb_buffer_pool_pages_blob_init");
+	ST_SCHEMA_TABLE* schema = (ST_SCHEMA_TABLE*) p;
+
+	schema->fields_info = i_s_innodb_buffer_pool_pages_blob_fields_info;
+	schema->fill_table = i_s_innodb_buffer_pool_pages_blob_fill;
+
+	DBUG_RETURN(0);
+}
+
+
+UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages =
+{
+	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
+	/* int */
+	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
+
+	/* pointer to type-specific plugin descriptor */
+	/* void* */
+	STRUCT_FLD(info, &i_s_info),
+
+	/* plugin name */
+	/* const char* */
+	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES"),
+
+	/* plugin author (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(author, "Percona"),
+
+	/* general descriptive text (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(descr, "InnoDB buffer pool pages"),
+
+	/* the plugin license (PLUGIN_LICENSE_XXX) */
+	/* int */
+	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
+
+	/* the function to invoke when plugin is loaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_init),
+
+	/* the function to invoke when plugin is unloaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(deinit, i_s_common_deinit),
+
+	/* plugin version (for SHOW PLUGINS) */
+	/* unsigned int */
+	STRUCT_FLD(version, 0x0100 /* 1.0 */),
+
+	/* struct st_mysql_show_var* */
+	STRUCT_FLD(status_vars, NULL),
+
+	/* struct st_mysql_sys_var** */
+	STRUCT_FLD(system_vars, NULL),
+
+	/* reserved for dependency checking */
+	/* void* */
+	STRUCT_FLD(__reserved1, NULL),
+
+	/* flags for plugin */
+	/* unsigned long */
+	STRUCT_FLD(flags, 0UL)
+};
+
+UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_index =
+{
+	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
+	/* int */
+	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
+
+	/* pointer to type-specific plugin descriptor */
+	/* void* */
+	STRUCT_FLD(info, &i_s_info),
+
+	/* plugin name */
+	/* const char* */
+	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_INDEX"),
+
+	/* plugin author (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(author, "Percona"),
+
+	/* general descriptive text (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(descr, "InnoDB buffer pool index pages"),
+
+	/* the plugin license (PLUGIN_LICENSE_XXX) */
+	/* int */
+	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
+
+	/* the function to invoke when plugin is loaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_index_init),
+
+	/* the function to invoke when plugin is unloaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(deinit, i_s_common_deinit),
+
+	/* plugin version (for SHOW PLUGINS) */
+	/* unsigned int */
+	STRUCT_FLD(version, 0x0100 /* 1.0 */),
+
+	/* struct st_mysql_show_var* */
+	STRUCT_FLD(status_vars, NULL),
+
+	/* struct st_mysql_sys_var** */
+	STRUCT_FLD(system_vars, NULL),
+
+	/* reserved for dependency checking */
+	/* void* */
+	STRUCT_FLD(__reserved1, NULL),
+
+	/* flags for plugin */
+	/* unsigned long */
+	STRUCT_FLD(flags, 0UL)
+};
+
+UNIV_INTERN struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_blob =
+{
+	/* the plugin type (a MYSQL_XXX_PLUGIN value) */
+	/* int */
+	STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
+
+	/* pointer to type-specific plugin descriptor */
+	/* void* */
+	STRUCT_FLD(info, &i_s_info),
+
+	/* plugin name */
+	/* const char* */
+	STRUCT_FLD(name, "INNODB_BUFFER_POOL_PAGES_BLOB"),
+
+	/* plugin author (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(author, "Percona"),
+
+	/* general descriptive text (for SHOW PLUGINS) */
+	/* const char* */
+	STRUCT_FLD(descr, "InnoDB buffer pool blob pages"),
+
+	/* the plugin license (PLUGIN_LICENSE_XXX) */
+	/* int */
+	STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
+
+	/* the function to invoke when plugin is loaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(init, i_s_innodb_buffer_pool_pages_blob_init),
+
+	/* the function to invoke when plugin is unloaded */
+	/* int (*)(void*); */
+	STRUCT_FLD(deinit, i_s_common_deinit),
+
+	/* plugin version (for SHOW PLUGINS) */
+	/* unsigned int */
+	STRUCT_FLD(version, 0x0100 /* 1.0 */),
+
+	/* struct st_mysql_show_var* */
+	STRUCT_FLD(status_vars, NULL),
+
+	/* struct st_mysql_sys_var** */
+	STRUCT_FLD(system_vars, NULL),
+
+	/* reserved for dependency checking */
+	/* void* */
+	STRUCT_FLD(__reserved1, NULL),
+
+	/* flags for plugin */
+	/* unsigned long */
+	STRUCT_FLD(flags, 0UL)
+};
+
--- a/storage/innobase/handler/i_s.h
+++ b/storage/innobase/handler/i_s.h
@@ -47,5 +47,8 @@
 extern struct st_mysql_plugin	i_s_innodb_table_stats;
 extern struct st_mysql_plugin	i_s_innodb_index_stats;
 extern struct st_mysql_plugin	i_s_innodb_admin_command;
+extern struct st_mysql_plugin	i_s_innodb_buffer_pool_pages;
+extern struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_index;
+extern struct st_mysql_plugin	i_s_innodb_buffer_pool_pages_blob;
 
 #endif /* i_s_h */
--- a/storage/innobase/include/buf0buf.h
+++ b/storage/innobase/include/buf0buf.h
@@ -1181,6 +1181,14 @@
 /*===========*/
 	const buf_pool_t*	buf_pool)	/*!< in: buffer pool */
 	__attribute__((nonnull, const));
+/********************************************************************//**
+*/
+UNIV_INTERN
+buf_block_t*
+buf_page_from_array(
+/*================*/
+	buf_pool_t*	buf_pool,
+	ulint		n_block);
 /******************************************************************//**
 Returns the buffer pool instance given a page instance
 @return buf_pool */