/*****************************************************************************

Copyright (c) 2015, MariaDB Corporation.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/**************************************************//**
@file include/fil0fil.ic
The low-level file system support functions

Created 31/03/2015 Jan Lindström
*******************************************************/

#ifndef fil0fil_ic
#define fil0fil_ic

/*******************************************************************//**
Return space name */
UNIV_INLINE
char*
fil_space_name(
/*===========*/
	fil_space_t*	space)	/*!< in: space */
{
	return (space->name);
}

/*******************************************************************//**
Return space flags */
UNIV_INLINE
ulint
fil_space_flags(
/*===========*/
	fil_space_t*	space)	/*!< in: space */
{
	return (space->flags);
}

/*******************************************************************//**
Return page type name */
UNIV_INLINE
const char*
fil_get_page_type_name(
/*===================*/
	ulint	page_type)	/*!< in: FIL_PAGE_TYPE */
{
	switch(page_type) {
	case FIL_PAGE_PAGE_COMPRESSED:
		return (const char*)"PAGE_COMPRESSED";
	case FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED:
		return (const char*)"PAGE_COMPRESSED_ENCRYPTED";
	case FIL_PAGE_INDEX:
		return (const char*)"INDEX";
	case FIL_PAGE_UNDO_LOG:
		return (const char*)"UNDO LOG";
	case FIL_PAGE_INODE:
		return (const char*)"INODE";
	case FIL_PAGE_IBUF_FREE_LIST:
		return (const char*)"IBUF_FREE_LIST";
	case FIL_PAGE_TYPE_ALLOCATED:
		return (const char*)"ALLOCATED";
	case FIL_PAGE_IBUF_BITMAP:
		return (const char*)"IBUF_BITMAP";
	case FIL_PAGE_TYPE_SYS:
		return (const char*)"SYS";
	case FIL_PAGE_TYPE_TRX_SYS:
		return (const char*)"TRX_SYS";
	case FIL_PAGE_TYPE_FSP_HDR:
		return (const char*)"FSP_HDR";
	case FIL_PAGE_TYPE_XDES:
		return (const char*)"XDES";
	case FIL_PAGE_TYPE_BLOB:
		return (const char*)"BLOB";
	case FIL_PAGE_TYPE_ZBLOB:
		return (const char*)"ZBLOB";
	case FIL_PAGE_TYPE_ZBLOB2:
		return (const char*)"ZBLOB2";
	case FIL_PAGE_TYPE_COMPRESSED:
		return (const char*)"ORACLE PAGE COMPRESSED";

	/* No default to make compiler generate warning if
	new page type is added but not handled here. */
	}

	return (const char*)"PAGE TYPE CORRUPTED";

}

/****************************************************************//**
Get block size from fil node
@return block size*/
UNIV_INLINE
ulint
fil_node_get_block_size(
/*====================*/
	fil_node_t*     node)		/*!< in: Node where to get block
					size */
{
	return (node->file_block_size);
}

/****************************************************************//**
Validate page type.
@return true if valid, false if not */
UNIV_INLINE
bool
fil_page_type_validate(
	const byte*	page)	/*!< in: page */
{
#ifdef UNIV_DEBUG
	ulint page_type = mach_read_from_2(page + FIL_PAGE_TYPE);

	/* Validate page type */
	if (!((page_type == FIL_PAGE_PAGE_COMPRESSED ||
		page_type == FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED ||
		page_type == FIL_PAGE_INDEX ||
		page_type == FIL_PAGE_UNDO_LOG ||
		page_type == FIL_PAGE_INODE ||
		page_type == FIL_PAGE_IBUF_FREE_LIST ||
		page_type == FIL_PAGE_TYPE_ALLOCATED ||
		page_type == FIL_PAGE_IBUF_BITMAP ||
		page_type == FIL_PAGE_TYPE_SYS ||
		page_type == FIL_PAGE_TYPE_TRX_SYS ||
		page_type == FIL_PAGE_TYPE_FSP_HDR ||
		page_type == FIL_PAGE_TYPE_XDES ||
		page_type == FIL_PAGE_TYPE_BLOB ||
		page_type == FIL_PAGE_TYPE_ZBLOB ||
		page_type == FIL_PAGE_TYPE_ZBLOB2 ||
		page_type == FIL_PAGE_TYPE_COMPRESSED))) {

		uint key_version = mach_read_from_4(page + FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION);
		bool page_compressed = (page_type == FIL_PAGE_PAGE_COMPRESSED);
		bool page_compressed_encrypted = (page_type == FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED);
		ulint space = mach_read_from_4(page + FIL_PAGE_ARCH_LOG_NO_OR_SPACE_ID);
		ulint offset = mach_read_from_4(page + FIL_PAGE_OFFSET);
		ib_uint64_t lsn = mach_read_from_8(page + FIL_PAGE_LSN);
		ulint compressed_len = mach_read_from_2(page + FIL_PAGE_DATA);
		fil_system_enter();
		fil_space_t* rspace = fil_space_get_by_id(space);
		fil_system_exit();


		/* Dump out the page info */
		fprintf(stderr, "InnoDB: Space %lu offset %lu name %s page_type %lu page_type_name %s\n"
			"InnoDB: key_version %u page_compressed %d page_compressed_encrypted %d lsn %llu compressed_len %lu\n",
			space, offset, rspace->name, page_type, fil_get_page_type_name(page_type),
			key_version, page_compressed, page_compressed_encrypted, (ulonglong)lsn, compressed_len);
		fflush(stderr);

		ut_ad(page_type == FIL_PAGE_PAGE_COMPRESSED ||
			page_type == FIL_PAGE_PAGE_COMPRESSED_ENCRYPTED ||
			page_type == FIL_PAGE_INDEX ||
			page_type == FIL_PAGE_UNDO_LOG ||
			page_type == FIL_PAGE_INODE ||
			page_type == FIL_PAGE_IBUF_FREE_LIST ||
			page_type == FIL_PAGE_TYPE_ALLOCATED ||
			page_type == FIL_PAGE_IBUF_BITMAP ||
			page_type == FIL_PAGE_TYPE_SYS ||
			page_type == FIL_PAGE_TYPE_TRX_SYS ||
			page_type == FIL_PAGE_TYPE_FSP_HDR ||
			page_type == FIL_PAGE_TYPE_XDES ||
			page_type == FIL_PAGE_TYPE_BLOB ||
			page_type == FIL_PAGE_TYPE_ZBLOB ||
			page_type == FIL_PAGE_TYPE_ZBLOB2 ||
			page_type == FIL_PAGE_TYPE_COMPRESSED);
		return false;
	}

#endif /* UNIV_DEBUG */
	return true;
}

#endif /* fil0fil_ic */