xfs: separate out log format definitions
The on-disk format definitions for the log are spread randoms through a couple of header files. Consolidate it all in a single file that can be shared easily with userspace. This means that xfs_log.h and xfs_log_priv.h no longer need to be shared with userspace. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner
Ben Myers
parent
7a378c9aea
commit
fc06c6d064
@ -18,14 +18,29 @@
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#ifndef __XFS_LOG_H__
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#define __XFS_LOG_H__
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/* get lsn fields */
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#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
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#define BLOCK_LSN(lsn) ((uint)(lsn))
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#include "xfs_log_format.h"
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/* this is used in a spot where we might otherwise double-endian-flip */
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#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
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struct xfs_log_vec {
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struct xfs_log_vec *lv_next; /* next lv in build list */
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int lv_niovecs; /* number of iovecs in lv */
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struct xfs_log_iovec *lv_iovecp; /* iovec array */
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struct xfs_log_item *lv_item; /* owner */
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char *lv_buf; /* formatted buffer */
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int lv_buf_len; /* size of formatted buffer */
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};
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#define XFS_LOG_VEC_ORDERED (-1)
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/*
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* Structure used to pass callback function and the function's argument
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* to the log manager.
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*/
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typedef struct xfs_log_callback {
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struct xfs_log_callback *cb_next;
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void (*cb_func)(void *, int);
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void *cb_arg;
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} xfs_log_callback_t;
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#ifdef __KERNEL__
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/*
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* By comparing each component, we don't have to worry about extra
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* endian issues in treating two 32 bit numbers as one 64 bit number
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@ -59,67 +74,6 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
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*/
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#define XFS_LOG_SYNC 0x1
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#endif /* __KERNEL__ */
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/* Log Clients */
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#define XFS_TRANSACTION 0x69
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#define XFS_VOLUME 0x2
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#define XFS_LOG 0xaa
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/* Region types for iovec's i_type */
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#define XLOG_REG_TYPE_BFORMAT 1
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#define XLOG_REG_TYPE_BCHUNK 2
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#define XLOG_REG_TYPE_EFI_FORMAT 3
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#define XLOG_REG_TYPE_EFD_FORMAT 4
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#define XLOG_REG_TYPE_IFORMAT 5
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#define XLOG_REG_TYPE_ICORE 6
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#define XLOG_REG_TYPE_IEXT 7
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#define XLOG_REG_TYPE_IBROOT 8
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#define XLOG_REG_TYPE_ILOCAL 9
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#define XLOG_REG_TYPE_IATTR_EXT 10
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#define XLOG_REG_TYPE_IATTR_BROOT 11
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#define XLOG_REG_TYPE_IATTR_LOCAL 12
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#define XLOG_REG_TYPE_QFORMAT 13
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#define XLOG_REG_TYPE_DQUOT 14
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#define XLOG_REG_TYPE_QUOTAOFF 15
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#define XLOG_REG_TYPE_LRHEADER 16
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#define XLOG_REG_TYPE_UNMOUNT 17
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#define XLOG_REG_TYPE_COMMIT 18
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#define XLOG_REG_TYPE_TRANSHDR 19
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#define XLOG_REG_TYPE_ICREATE 20
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#define XLOG_REG_TYPE_MAX 20
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typedef struct xfs_log_iovec {
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void *i_addr; /* beginning address of region */
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int i_len; /* length in bytes of region */
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uint i_type; /* type of region */
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} xfs_log_iovec_t;
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struct xfs_log_vec {
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struct xfs_log_vec *lv_next; /* next lv in build list */
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int lv_niovecs; /* number of iovecs in lv */
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struct xfs_log_iovec *lv_iovecp; /* iovec array */
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struct xfs_log_item *lv_item; /* owner */
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char *lv_buf; /* formatted buffer */
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int lv_buf_len; /* size of formatted buffer */
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};
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#define XFS_LOG_VEC_ORDERED (-1)
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/*
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* Structure used to pass callback function and the function's argument
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* to the log manager.
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*/
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typedef struct xfs_log_callback {
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struct xfs_log_callback *cb_next;
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void (*cb_func)(void *, int);
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void *cb_arg;
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} xfs_log_callback_t;
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#ifdef __KERNEL__
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/* Log manager interfaces */
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struct xfs_mount;
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struct xlog_in_core;
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@ -188,5 +142,4 @@ void xfs_log_work_queue(struct xfs_mount *mp);
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void xfs_log_worker(struct work_struct *work);
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void xfs_log_quiesce(struct xfs_mount *mp);
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#endif
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#endif /* __XFS_LOG_H__ */
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178
fs/xfs/xfs_log_format.h
Normal file
178
fs/xfs/xfs_log_format.h
Normal file
@ -0,0 +1,178 @@
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/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_LOG_FORMAT_H__
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#define __XFS_LOG_FORMAT_H__
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typedef __uint32_t xlog_tid_t;
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#define XLOG_MIN_ICLOGS 2
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#define XLOG_MAX_ICLOGS 8
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#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */
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#define XLOG_VERSION_1 1
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#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */
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#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
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#define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */
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#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */
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#define XLOG_MAX_RECORD_BSIZE (256*1024)
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#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */
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#define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */
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#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */
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#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */
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#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
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(log)->l_mp->m_sb.sb_logsunit)
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#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit)
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#define XLOG_HEADER_SIZE 512
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#define XLOG_REC_SHIFT(log) \
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BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
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XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
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#define XLOG_TOTAL_REC_SHIFT(log) \
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BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
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XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
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/* get lsn fields */
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#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
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#define BLOCK_LSN(lsn) ((uint)(lsn))
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/* this is used in a spot where we might otherwise double-endian-flip */
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#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
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static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
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{
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return ((xfs_lsn_t)cycle << 32) | block;
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}
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static inline uint xlog_get_cycle(char *ptr)
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{
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if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
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return be32_to_cpu(*((__be32 *)ptr + 1));
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else
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return be32_to_cpu(*(__be32 *)ptr);
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}
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/* Log Clients */
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#define XFS_TRANSACTION 0x69
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#define XFS_VOLUME 0x2
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#define XFS_LOG 0xaa
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#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
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/* Region types for iovec's i_type */
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#define XLOG_REG_TYPE_BFORMAT 1
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#define XLOG_REG_TYPE_BCHUNK 2
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#define XLOG_REG_TYPE_EFI_FORMAT 3
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#define XLOG_REG_TYPE_EFD_FORMAT 4
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#define XLOG_REG_TYPE_IFORMAT 5
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#define XLOG_REG_TYPE_ICORE 6
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#define XLOG_REG_TYPE_IEXT 7
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#define XLOG_REG_TYPE_IBROOT 8
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#define XLOG_REG_TYPE_ILOCAL 9
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#define XLOG_REG_TYPE_IATTR_EXT 10
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#define XLOG_REG_TYPE_IATTR_BROOT 11
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#define XLOG_REG_TYPE_IATTR_LOCAL 12
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#define XLOG_REG_TYPE_QFORMAT 13
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#define XLOG_REG_TYPE_DQUOT 14
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#define XLOG_REG_TYPE_QUOTAOFF 15
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#define XLOG_REG_TYPE_LRHEADER 16
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#define XLOG_REG_TYPE_UNMOUNT 17
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#define XLOG_REG_TYPE_COMMIT 18
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#define XLOG_REG_TYPE_TRANSHDR 19
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#define XLOG_REG_TYPE_ICREATE 20
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#define XLOG_REG_TYPE_MAX 20
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/*
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* Flags to log operation header
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*
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* The first write of a new transaction will be preceded with a start
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* record, XLOG_START_TRANS. Once a transaction is committed, a commit
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* record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
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* the remainder of the current active in-core log, it is split up into
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* multiple regions. Each partial region will be marked with a
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* XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
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*
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*/
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#define XLOG_START_TRANS 0x01 /* Start a new transaction */
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#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
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#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
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#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
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#define XLOG_END_TRANS 0x10 /* End a continued transaction */
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#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
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typedef struct xlog_op_header {
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__be32 oh_tid; /* transaction id of operation : 4 b */
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__be32 oh_len; /* bytes in data region : 4 b */
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__u8 oh_clientid; /* who sent me this : 1 b */
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__u8 oh_flags; /* : 1 b */
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__u16 oh_res2; /* 32 bit align : 2 b */
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} xlog_op_header_t;
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/* valid values for h_fmt */
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#define XLOG_FMT_UNKNOWN 0
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#define XLOG_FMT_LINUX_LE 1
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#define XLOG_FMT_LINUX_BE 2
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#define XLOG_FMT_IRIX_BE 3
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/* our fmt */
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#ifdef XFS_NATIVE_HOST
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#define XLOG_FMT XLOG_FMT_LINUX_BE
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#else
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#define XLOG_FMT XLOG_FMT_LINUX_LE
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#endif
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typedef struct xlog_rec_header {
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__be32 h_magicno; /* log record (LR) identifier : 4 */
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__be32 h_cycle; /* write cycle of log : 4 */
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__be32 h_version; /* LR version : 4 */
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__be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
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__be64 h_lsn; /* lsn of this LR : 8 */
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__be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
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__le32 h_crc; /* crc of log record : 4 */
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__be32 h_prev_block; /* block number to previous LR : 4 */
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__be32 h_num_logops; /* number of log operations in this LR : 4 */
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__be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
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/* new fields */
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__be32 h_fmt; /* format of log record : 4 */
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uuid_t h_fs_uuid; /* uuid of FS : 16 */
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__be32 h_size; /* iclog size : 4 */
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} xlog_rec_header_t;
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typedef struct xlog_rec_ext_header {
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__be32 xh_cycle; /* write cycle of log : 4 */
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__be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
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} xlog_rec_ext_header_t;
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/*
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* Quite misnamed, because this union lays out the actual on-disk log buffer.
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*/
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typedef union xlog_in_core2 {
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xlog_rec_header_t hic_header;
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xlog_rec_ext_header_t hic_xheader;
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char hic_sector[XLOG_HEADER_SIZE];
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} xlog_in_core_2_t;
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/* not an on-disk structure, but needed by log recovery in userspace */
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typedef struct xfs_log_iovec {
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void *i_addr; /* beginning address of region */
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int i_len; /* length in bytes of region */
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uint i_type; /* type of region */
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} xfs_log_iovec_t;
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#endif /* __XFS_LOG_FORMAT_H__ */
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@ -24,51 +24,13 @@ struct xlog_ticket;
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struct xfs_mount;
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/*
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* Macros, structures, prototypes for internal log manager use.
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* Flags for log structure
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*/
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#define XLOG_MIN_ICLOGS 2
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#define XLOG_MAX_ICLOGS 8
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#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */
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#define XLOG_VERSION_1 1
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#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */
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#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
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#define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */
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#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */
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#define XLOG_MAX_RECORD_BSIZE (256*1024)
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#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */
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#define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */
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#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */
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#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */
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#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
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(log)->l_mp->m_sb.sb_logsunit)
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#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit)
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#define XLOG_HEADER_SIZE 512
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#define XLOG_REC_SHIFT(log) \
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BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
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XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
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#define XLOG_TOTAL_REC_SHIFT(log) \
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BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
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XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
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static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
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{
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return ((xfs_lsn_t)cycle << 32) | block;
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}
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static inline uint xlog_get_cycle(char *ptr)
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{
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if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
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return be32_to_cpu(*((__be32 *)ptr + 1));
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else
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return be32_to_cpu(*(__be32 *)ptr);
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}
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#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1)
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#ifdef __KERNEL__
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#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */
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#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */
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#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being
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shutdown */
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#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */
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/*
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* get client id from packed copy.
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@ -101,27 +63,7 @@ static inline uint xlog_get_client_id(__be32 i)
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#define XLOG_STATE_IOERROR 0x0080 /* IO error happened in sync'ing log */
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#define XLOG_STATE_ALL 0x7FFF /* All possible valid flags */
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#define XLOG_STATE_NOTUSED 0x8000 /* This IC log not being used */
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#endif /* __KERNEL__ */
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/*
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* Flags to log operation header
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*
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* The first write of a new transaction will be preceded with a start
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* record, XLOG_START_TRANS. Once a transaction is committed, a commit
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* record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
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* the remainder of the current active in-core log, it is split up into
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* multiple regions. Each partial region will be marked with a
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* XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
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*
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*/
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#define XLOG_START_TRANS 0x01 /* Start a new transaction */
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#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
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#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
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#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
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#define XLOG_END_TRANS 0x10 /* End a continued transaction */
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#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
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#ifdef __KERNEL__
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/*
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* Flags to log ticket
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*/
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@ -132,22 +74,6 @@ static inline uint xlog_get_client_id(__be32 i)
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{ XLOG_TIC_INITED, "XLOG_TIC_INITED" }, \
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{ XLOG_TIC_PERM_RESERV, "XLOG_TIC_PERM_RESERV" }
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#endif /* __KERNEL__ */
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#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
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/*
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* Flags for log structure
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*/
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#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */
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#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */
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#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being
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||||
shutdown */
|
||||
#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */
|
||||
|
||||
typedef __uint32_t xlog_tid_t;
|
||||
|
||||
#ifdef __KERNEL__
|
||||
/*
|
||||
* Below are states for covering allocation transactions.
|
||||
* By covering, we mean changing the h_tail_lsn in the last on-disk
|
||||
@ -223,7 +149,6 @@ typedef __uint32_t xlog_tid_t;
|
||||
|
||||
#define XLOG_COVER_OPS 5
|
||||
|
||||
|
||||
/* Ticket reservation region accounting */
|
||||
#define XLOG_TIC_LEN_MAX 15
|
||||
|
||||
@ -258,64 +183,6 @@ typedef struct xlog_ticket {
|
||||
xlog_res_t t_res_arr[XLOG_TIC_LEN_MAX]; /* array of res : 8 * 15 */
|
||||
} xlog_ticket_t;
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
typedef struct xlog_op_header {
|
||||
__be32 oh_tid; /* transaction id of operation : 4 b */
|
||||
__be32 oh_len; /* bytes in data region : 4 b */
|
||||
__u8 oh_clientid; /* who sent me this : 1 b */
|
||||
__u8 oh_flags; /* : 1 b */
|
||||
__u16 oh_res2; /* 32 bit align : 2 b */
|
||||
} xlog_op_header_t;
|
||||
|
||||
|
||||
/* valid values for h_fmt */
|
||||
#define XLOG_FMT_UNKNOWN 0
|
||||
#define XLOG_FMT_LINUX_LE 1
|
||||
#define XLOG_FMT_LINUX_BE 2
|
||||
#define XLOG_FMT_IRIX_BE 3
|
||||
|
||||
/* our fmt */
|
||||
#ifdef XFS_NATIVE_HOST
|
||||
#define XLOG_FMT XLOG_FMT_LINUX_BE
|
||||
#else
|
||||
#define XLOG_FMT XLOG_FMT_LINUX_LE
|
||||
#endif
|
||||
|
||||
typedef struct xlog_rec_header {
|
||||
__be32 h_magicno; /* log record (LR) identifier : 4 */
|
||||
__be32 h_cycle; /* write cycle of log : 4 */
|
||||
__be32 h_version; /* LR version : 4 */
|
||||
__be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
|
||||
__be64 h_lsn; /* lsn of this LR : 8 */
|
||||
__be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
|
||||
__le32 h_crc; /* crc of log record : 4 */
|
||||
__be32 h_prev_block; /* block number to previous LR : 4 */
|
||||
__be32 h_num_logops; /* number of log operations in this LR : 4 */
|
||||
__be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
|
||||
/* new fields */
|
||||
__be32 h_fmt; /* format of log record : 4 */
|
||||
uuid_t h_fs_uuid; /* uuid of FS : 16 */
|
||||
__be32 h_size; /* iclog size : 4 */
|
||||
} xlog_rec_header_t;
|
||||
|
||||
typedef struct xlog_rec_ext_header {
|
||||
__be32 xh_cycle; /* write cycle of log : 4 */
|
||||
__be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
|
||||
} xlog_rec_ext_header_t;
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
/*
|
||||
* Quite misnamed, because this union lays out the actual on-disk log buffer.
|
||||
*/
|
||||
typedef union xlog_in_core2 {
|
||||
xlog_rec_header_t hic_header;
|
||||
xlog_rec_ext_header_t hic_xheader;
|
||||
char hic_sector[XLOG_HEADER_SIZE];
|
||||
} xlog_in_core_2_t;
|
||||
|
||||
/*
|
||||
* - A log record header is 512 bytes. There is plenty of room to grow the
|
||||
* xlog_rec_header_t into the reserved space.
|
||||
@ -686,6 +553,5 @@ static inline void xlog_wait(wait_queue_head_t *wq, spinlock_t *lock)
|
||||
schedule();
|
||||
remove_wait_queue(wq, &wait);
|
||||
}
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* __XFS_LOG_PRIV_H__ */
|
||||
|
||||
@ -55,6 +55,8 @@
|
||||
#include "xfs_attr_leaf.h"
|
||||
#include "xfs_attr_remote.h"
|
||||
|
||||
#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1)
|
||||
|
||||
STATIC int
|
||||
xlog_find_zeroed(
|
||||
struct xlog *,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user