linux/fs/xfs/uuid.h
Christoph Hellwig bc02e8693d xfs: add CRC infrastructure
- add a mount feature bit for CRC enabled filesystems
 - add some helpers for generating and verifying the CRCs
 - add a copy_uuid helper

The checksumming helpers are loosely based on similar ones in sctp,
all other bits come from Dave Chinner.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2012-11-19 20:11:24 -06:00

35 lines
1.1 KiB
C

/*
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* 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.
*
* This program is distributed in the hope that it would 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 the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_SUPPORT_UUID_H__
#define __XFS_SUPPORT_UUID_H__
typedef struct {
unsigned char __u_bits[16];
} uuid_t;
extern int uuid_is_nil(uuid_t *uuid);
extern int uuid_equal(uuid_t *uuid1, uuid_t *uuid2);
extern void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]);
static inline void
uuid_copy(uuid_t *dst, uuid_t *src)
{
memcpy(dst, src, sizeof(uuid_t));
}
#endif /* __XFS_SUPPORT_UUID_H__ */