zio.h revision b1b8ab34de515a5e83206da22c3d7e563241b021
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ZIO_H
#define _ZIO_H
#pragma ident "%Z%%M% %I% %E% SMI"
typedef struct zio_block_tail {
/*
* Gang block headers are self-checksumming and contain an array
* of block pointers.
*/
#define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
#define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
sizeof (zio_block_tail_t)) / sizeof (blkptr_t))
#define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
sizeof (zio_block_tail_t) - \
(SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\
sizeof (uint64_t))
#define ZIO_GET_IOSIZE(zio) \
typedef struct zio_gbh {
enum zio_checksum {
ZIO_CHECKSUM_INHERIT = 0,
};
#define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
enum zio_compress {
ZIO_COMPRESS_INHERIT = 0,
};
#endif /* _ZIO_H */