3f89243c5b
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26749a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
184 lines
5.2 KiB
C
184 lines
5.2 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_LOG_H__
|
|
#define __XFS_LOG_H__
|
|
|
|
/* get lsn fields */
|
|
|
|
#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
|
|
#define BLOCK_LSN(lsn) ((uint)(lsn))
|
|
/* this is used in a spot where we might otherwise double-endian-flip */
|
|
#define CYCLE_LSN_DISK(lsn) (((uint *)&(lsn))[0])
|
|
|
|
#ifdef __KERNEL__
|
|
/*
|
|
* By comparing each component, we don't have to worry about extra
|
|
* endian issues in treating two 32 bit numbers as one 64 bit number
|
|
*/
|
|
static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
|
|
{
|
|
if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
|
|
return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
|
|
|
|
if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
|
|
return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
|
|
|
|
/*
|
|
* Macros, structures, prototypes for interface to the log manager.
|
|
*/
|
|
|
|
/*
|
|
* Flags to xfs_log_done()
|
|
*/
|
|
#define XFS_LOG_REL_PERM_RESERV 0x1
|
|
|
|
/*
|
|
* Flags to xfs_log_reserve()
|
|
*
|
|
* XFS_LOG_SLEEP: If space is not available, sleep (default)
|
|
* XFS_LOG_NOSLEEP: If space is not available, return error
|
|
* XFS_LOG_PERM_RESERV: Permanent reservation. When writes are
|
|
* performed against this type of reservation, the reservation
|
|
* is not decreased. Long running transactions should use this.
|
|
*/
|
|
#define XFS_LOG_SLEEP 0x0
|
|
#define XFS_LOG_NOSLEEP 0x1
|
|
#define XFS_LOG_PERM_RESERV 0x2
|
|
|
|
/*
|
|
* Flags to xfs_log_force()
|
|
*
|
|
* XFS_LOG_SYNC: Synchronous force in-core log to disk
|
|
* XFS_LOG_FORCE: Start in-core log write now.
|
|
* XFS_LOG_URGE: Start write within some window of time.
|
|
*
|
|
* Note: Either XFS_LOG_FORCE or XFS_LOG_URGE must be set.
|
|
*/
|
|
#define XFS_LOG_SYNC 0x1
|
|
#define XFS_LOG_FORCE 0x2
|
|
#define XFS_LOG_URGE 0x4
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
|
|
/* Log Clients */
|
|
#define XFS_TRANSACTION 0x69
|
|
#define XFS_VOLUME 0x2
|
|
#define XFS_LOG 0xaa
|
|
|
|
|
|
/* Region types for iovec's i_type */
|
|
#define XLOG_REG_TYPE_BFORMAT 1
|
|
#define XLOG_REG_TYPE_BCHUNK 2
|
|
#define XLOG_REG_TYPE_EFI_FORMAT 3
|
|
#define XLOG_REG_TYPE_EFD_FORMAT 4
|
|
#define XLOG_REG_TYPE_IFORMAT 5
|
|
#define XLOG_REG_TYPE_ICORE 6
|
|
#define XLOG_REG_TYPE_IEXT 7
|
|
#define XLOG_REG_TYPE_IBROOT 8
|
|
#define XLOG_REG_TYPE_ILOCAL 9
|
|
#define XLOG_REG_TYPE_IATTR_EXT 10
|
|
#define XLOG_REG_TYPE_IATTR_BROOT 11
|
|
#define XLOG_REG_TYPE_IATTR_LOCAL 12
|
|
#define XLOG_REG_TYPE_QFORMAT 13
|
|
#define XLOG_REG_TYPE_DQUOT 14
|
|
#define XLOG_REG_TYPE_QUOTAOFF 15
|
|
#define XLOG_REG_TYPE_LRHEADER 16
|
|
#define XLOG_REG_TYPE_UNMOUNT 17
|
|
#define XLOG_REG_TYPE_COMMIT 18
|
|
#define XLOG_REG_TYPE_TRANSHDR 19
|
|
#define XLOG_REG_TYPE_MAX 19
|
|
|
|
#define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t))
|
|
|
|
typedef struct xfs_log_iovec {
|
|
xfs_caddr_t i_addr; /* beginning address of region */
|
|
int i_len; /* length in bytes of region */
|
|
uint i_type; /* type of region */
|
|
} xfs_log_iovec_t;
|
|
|
|
typedef void* xfs_log_ticket_t;
|
|
|
|
/*
|
|
* Structure used to pass callback function and the function's argument
|
|
* to the log manager.
|
|
*/
|
|
typedef struct xfs_log_callback {
|
|
struct xfs_log_callback *cb_next;
|
|
void (*cb_func)(void *, int);
|
|
void *cb_arg;
|
|
} xfs_log_callback_t;
|
|
|
|
|
|
#ifdef __KERNEL__
|
|
/* Log manager interfaces */
|
|
struct xfs_mount;
|
|
xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
|
|
xfs_log_ticket_t ticket,
|
|
void **iclog,
|
|
uint flags);
|
|
int _xfs_log_force(struct xfs_mount *mp,
|
|
xfs_lsn_t lsn,
|
|
uint flags,
|
|
int *log_forced);
|
|
#define xfs_log_force(mp, lsn, flags) \
|
|
_xfs_log_force(mp, lsn, flags, NULL);
|
|
int xfs_log_mount(struct xfs_mount *mp,
|
|
struct xfs_buftarg *log_target,
|
|
xfs_daddr_t start_block,
|
|
int num_bblocks);
|
|
int xfs_log_mount_finish(struct xfs_mount *mp, int);
|
|
void xfs_log_move_tail(struct xfs_mount *mp,
|
|
xfs_lsn_t tail_lsn);
|
|
int xfs_log_notify(struct xfs_mount *mp,
|
|
void *iclog,
|
|
xfs_log_callback_t *callback_entry);
|
|
int xfs_log_release_iclog(struct xfs_mount *mp,
|
|
void *iclog_hndl);
|
|
int xfs_log_reserve(struct xfs_mount *mp,
|
|
int length,
|
|
int count,
|
|
xfs_log_ticket_t *ticket,
|
|
__uint8_t clientid,
|
|
uint flags,
|
|
uint t_type);
|
|
int xfs_log_write(struct xfs_mount *mp,
|
|
xfs_log_iovec_t region[],
|
|
int nentries,
|
|
xfs_log_ticket_t ticket,
|
|
xfs_lsn_t *start_lsn);
|
|
int xfs_log_unmount(struct xfs_mount *mp);
|
|
int xfs_log_unmount_write(struct xfs_mount *mp);
|
|
void xfs_log_unmount_dealloc(struct xfs_mount *mp);
|
|
int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
|
|
int xfs_log_need_covered(struct xfs_mount *mp);
|
|
|
|
void xlog_iodone(struct xfs_buf *);
|
|
|
|
#endif
|
|
|
|
|
|
extern int xlog_debug; /* set to 1 to enable real log */
|
|
|
|
|
|
#endif /* __XFS_LOG_H__ */
|