873 lines
29 KiB
C
873 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0
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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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#ifndef __XFS_LOG_FORMAT_H__
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#define __XFS_LOG_FORMAT_H__
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struct xfs_mount;
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struct xfs_trans_res;
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/*
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* On-disk Log Format definitions.
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*
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* This file contains all the on-disk format definitions used within the log. It
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* includes the physical log structure itself, as well as all the log item
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* format structures that are written into the log and intepreted by log
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* recovery. We start with the physical log format definitions, and then work
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* through all the log items definitions and everything they encode into the
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* log.
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*/
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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_HEADER_SIZE 512
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/* Minimum number of transactions that must fit in the log (defined by mkfs) */
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#define XFS_MIN_LOG_FACTOR 3
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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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/*
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* Log item for unmount records.
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*
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* The unmount record used to have a string "Unmount filesystem--" in the
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* data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE).
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* We just write the magic number now; see xfs_log_unmount_write.
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*/
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struct xfs_unmount_log_format {
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uint16_t magic; /* XLOG_UNMOUNT_TYPE */
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uint16_t pad1;
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uint32_t pad2; /* may as well make it 64 bits */
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};
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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_RUI_FORMAT 21
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#define XLOG_REG_TYPE_RUD_FORMAT 22
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#define XLOG_REG_TYPE_CUI_FORMAT 23
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#define XLOG_REG_TYPE_CUD_FORMAT 24
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#define XLOG_REG_TYPE_BUI_FORMAT 25
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#define XLOG_REG_TYPE_BUD_FORMAT 26
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#define XLOG_REG_TYPE_MAX 26
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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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/*
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* Transaction Header definitions.
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*
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* This is the structure written in the log at the head of every transaction. It
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* identifies the type and id of the transaction, and contains the number of
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* items logged by the transaction so we know how many to expect during
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* recovery.
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*
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* Do not change the below structure without redoing the code in
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* xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
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*/
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typedef struct xfs_trans_header {
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uint th_magic; /* magic number */
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uint th_type; /* transaction type */
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int32_t th_tid; /* transaction id (unused) */
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uint th_num_items; /* num items logged by trans */
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} xfs_trans_header_t;
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#define XFS_TRANS_HEADER_MAGIC 0x5452414e /* TRAN */
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/*
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* The only type valid for th_type in CIL-enabled file system logs:
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*/
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#define XFS_TRANS_CHECKPOINT 40
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/*
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* Log item types.
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*/
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#define XFS_LI_EFI 0x1236
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#define XFS_LI_EFD 0x1237
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#define XFS_LI_IUNLINK 0x1238
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#define XFS_LI_INODE 0x123b /* aligned ino chunks, var-size ibufs */
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#define XFS_LI_BUF 0x123c /* v2 bufs, variable sized inode bufs */
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#define XFS_LI_DQUOT 0x123d
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#define XFS_LI_QUOTAOFF 0x123e
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#define XFS_LI_ICREATE 0x123f
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#define XFS_LI_RUI 0x1240 /* rmap update intent */
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#define XFS_LI_RUD 0x1241
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#define XFS_LI_CUI 0x1242 /* refcount update intent */
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#define XFS_LI_CUD 0x1243
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#define XFS_LI_BUI 0x1244 /* bmbt update intent */
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#define XFS_LI_BUD 0x1245
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#define XFS_LI_TYPE_DESC \
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{ XFS_LI_EFI, "XFS_LI_EFI" }, \
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{ XFS_LI_EFD, "XFS_LI_EFD" }, \
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{ XFS_LI_IUNLINK, "XFS_LI_IUNLINK" }, \
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{ XFS_LI_INODE, "XFS_LI_INODE" }, \
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{ XFS_LI_BUF, "XFS_LI_BUF" }, \
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{ XFS_LI_DQUOT, "XFS_LI_DQUOT" }, \
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{ XFS_LI_QUOTAOFF, "XFS_LI_QUOTAOFF" }, \
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{ XFS_LI_ICREATE, "XFS_LI_ICREATE" }, \
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{ XFS_LI_RUI, "XFS_LI_RUI" }, \
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{ XFS_LI_RUD, "XFS_LI_RUD" }, \
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{ XFS_LI_CUI, "XFS_LI_CUI" }, \
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{ XFS_LI_CUD, "XFS_LI_CUD" }, \
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{ XFS_LI_BUI, "XFS_LI_BUI" }, \
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{ XFS_LI_BUD, "XFS_LI_BUD" }
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/*
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* Inode Log Item Format definitions.
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*
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* This is the structure used to lay out an inode log item in the
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* log. The size of the inline data/extents/b-tree root to be logged
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* (if any) is indicated in the ilf_dsize field. Changes to this structure
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* must be added on to the end.
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*/
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struct xfs_inode_log_format {
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uint16_t ilf_type; /* inode log item type */
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uint16_t ilf_size; /* size of this item */
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uint32_t ilf_fields; /* flags for fields logged */
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uint16_t ilf_asize; /* size of attr d/ext/root */
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uint16_t ilf_dsize; /* size of data/ext/root */
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uint32_t ilf_pad; /* pad for 64 bit boundary */
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uint64_t ilf_ino; /* inode number */
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union {
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uint32_t ilfu_rdev; /* rdev value for dev inode*/
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uint8_t __pad[16]; /* unused */
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} ilf_u;
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int64_t ilf_blkno; /* blkno of inode buffer */
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int32_t ilf_len; /* len of inode buffer */
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int32_t ilf_boffset; /* off of inode in buffer */
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};
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/*
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* Old 32 bit systems will log in this format without the 64 bit
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* alignment padding. Recovery will detect this and convert it to the
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* correct format.
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*/
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struct xfs_inode_log_format_32 {
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uint16_t ilf_type; /* inode log item type */
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uint16_t ilf_size; /* size of this item */
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uint32_t ilf_fields; /* flags for fields logged */
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uint16_t ilf_asize; /* size of attr d/ext/root */
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uint16_t ilf_dsize; /* size of data/ext/root */
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uint64_t ilf_ino; /* inode number */
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union {
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uint32_t ilfu_rdev; /* rdev value for dev inode*/
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uint8_t __pad[16]; /* unused */
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} ilf_u;
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int64_t ilf_blkno; /* blkno of inode buffer */
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int32_t ilf_len; /* len of inode buffer */
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int32_t ilf_boffset; /* off of inode in buffer */
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} __attribute__((packed));
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/*
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* Flags for xfs_trans_log_inode flags field.
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*/
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#define XFS_ILOG_CORE 0x001 /* log standard inode fields */
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#define XFS_ILOG_DDATA 0x002 /* log i_df.if_data */
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#define XFS_ILOG_DEXT 0x004 /* log i_df.if_extents */
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#define XFS_ILOG_DBROOT 0x008 /* log i_df.i_broot */
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#define XFS_ILOG_DEV 0x010 /* log the dev field */
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#define XFS_ILOG_UUID 0x020 /* added long ago, but never used */
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#define XFS_ILOG_ADATA 0x040 /* log i_af.if_data */
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#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
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#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
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#define XFS_ILOG_DOWNER 0x200 /* change the data fork owner on replay */
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#define XFS_ILOG_AOWNER 0x400 /* change the attr fork owner on replay */
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/*
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* The timestamps are dirty, but not necessarily anything else in the inode
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* core. Unlike the other fields above this one must never make it to disk
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* in the ilf_fields of the inode_log_format, but is purely store in-memory in
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* ili_fields in the inode_log_item.
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*/
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#define XFS_ILOG_TIMESTAMP 0x4000
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#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
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XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
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XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
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XFS_ILOG_ABROOT | XFS_ILOG_DOWNER | \
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XFS_ILOG_AOWNER)
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#define XFS_ILOG_DFORK (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
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XFS_ILOG_DBROOT)
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#define XFS_ILOG_AFORK (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
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XFS_ILOG_ABROOT)
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#define XFS_ILOG_ALL (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
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XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
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XFS_ILOG_DEV | XFS_ILOG_ADATA | \
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XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
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XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \
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XFS_ILOG_AOWNER)
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static inline int xfs_ilog_fbroot(int w)
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{
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return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
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}
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static inline int xfs_ilog_fext(int w)
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{
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return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
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}
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static inline int xfs_ilog_fdata(int w)
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{
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return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
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}
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/*
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* Incore version of the on-disk inode core structures. We log this directly
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* into the journal in host CPU format (for better or worse) and as such
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* directly mirrors the xfs_dinode structure as it must contain all the same
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* information.
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*/
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typedef uint64_t xfs_log_timestamp_t;
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/* Legacy timestamp encoding format. */
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struct xfs_log_legacy_timestamp {
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int32_t t_sec; /* timestamp seconds */
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int32_t t_nsec; /* timestamp nanoseconds */
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};
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/*
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* Define the format of the inode core that is logged. This structure must be
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* kept identical to struct xfs_dinode except for the endianness annotations.
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*/
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struct xfs_log_dinode {
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uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
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uint16_t di_mode; /* mode and type of file */
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int8_t di_version; /* inode version */
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int8_t di_format; /* format of di_c data */
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uint8_t di_pad3[2]; /* unused in v2/3 inodes */
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uint32_t di_uid; /* owner's user id */
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uint32_t di_gid; /* owner's group id */
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uint32_t di_nlink; /* number of links to file */
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uint16_t di_projid_lo; /* lower part of owner's project id */
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uint16_t di_projid_hi; /* higher part of owner's project id */
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uint8_t di_pad[6]; /* unused, zeroed space */
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uint16_t di_flushiter; /* incremented on flush */
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xfs_log_timestamp_t di_atime; /* time last accessed */
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xfs_log_timestamp_t di_mtime; /* time last modified */
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xfs_log_timestamp_t di_ctime; /* time created/inode modified */
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xfs_fsize_t di_size; /* number of bytes in file */
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xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */
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xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
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xfs_extnum_t di_nextents; /* number of extents in data fork */
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xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
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uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
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int8_t di_aformat; /* format of attr fork's data */
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uint32_t di_dmevmask; /* DMIG event mask */
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uint16_t di_dmstate; /* DMIG state info */
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uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
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uint32_t di_gen; /* generation number */
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/* di_next_unlinked is the only non-core field in the old dinode */
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|
xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */
|
|
|
|
/* start of the extended dinode, writable fields */
|
|
uint32_t di_crc; /* CRC of the inode */
|
|
uint64_t di_changecount; /* number of attribute changes */
|
|
|
|
/*
|
|
* The LSN we write to this field during formatting is not a reflection
|
|
* of the current on-disk LSN. It should never be used for recovery
|
|
* sequencing, nor should it be recovered into the on-disk inode at all.
|
|
* See xlog_recover_inode_commit_pass2() and xfs_log_dinode_to_disk()
|
|
* for details.
|
|
*/
|
|
xfs_lsn_t di_lsn;
|
|
|
|
uint64_t di_flags2; /* more random flags */
|
|
uint32_t di_cowextsize; /* basic cow extent size for file */
|
|
uint8_t di_pad2[12]; /* more padding for future expansion */
|
|
|
|
/* fields only written to during inode creation */
|
|
xfs_log_timestamp_t di_crtime; /* time created */
|
|
xfs_ino_t di_ino; /* inode number */
|
|
uuid_t di_uuid; /* UUID of the filesystem */
|
|
|
|
/* structure must be padded to 64 bit alignment */
|
|
};
|
|
|
|
#define xfs_log_dinode_size(mp) \
|
|
(xfs_sb_version_has_v3inode(&(mp)->m_sb) ? \
|
|
sizeof(struct xfs_log_dinode) : \
|
|
offsetof(struct xfs_log_dinode, di_next_unlinked))
|
|
|
|
/*
|
|
* Buffer Log Format definitions
|
|
*
|
|
* These are the physical dirty bitmap definitions for the log format structure.
|
|
*/
|
|
#define XFS_BLF_CHUNK 128
|
|
#define XFS_BLF_SHIFT 7
|
|
#define BIT_TO_WORD_SHIFT 5
|
|
#define NBWORD (NBBY * sizeof(unsigned int))
|
|
|
|
/*
|
|
* This flag indicates that the buffer contains on disk inodes
|
|
* and requires special recovery handling.
|
|
*/
|
|
#define XFS_BLF_INODE_BUF (1<<0)
|
|
|
|
/*
|
|
* This flag indicates that the buffer should not be replayed
|
|
* during recovery because its blocks are being freed.
|
|
*/
|
|
#define XFS_BLF_CANCEL (1<<1)
|
|
|
|
/*
|
|
* This flag indicates that the buffer contains on disk
|
|
* user or group dquots and may require special recovery handling.
|
|
*/
|
|
#define XFS_BLF_UDQUOT_BUF (1<<2)
|
|
#define XFS_BLF_PDQUOT_BUF (1<<3)
|
|
#define XFS_BLF_GDQUOT_BUF (1<<4)
|
|
|
|
/*
|
|
* This is the structure used to lay out a buf log item in the log. The data
|
|
* map describes which 128 byte chunks of the buffer have been logged.
|
|
*
|
|
* The placement of blf_map_size causes blf_data_map to start at an odd
|
|
* multiple of sizeof(unsigned int) offset within the struct. Because the data
|
|
* bitmap size will always be an even number, the end of the data_map (and
|
|
* therefore the structure) will also be at an odd multiple of sizeof(unsigned
|
|
* int). Some 64-bit compilers will insert padding at the end of the struct to
|
|
* ensure 64-bit alignment of blf_blkno, but 32-bit ones will not. Therefore,
|
|
* XFS_BLF_DATAMAP_SIZE must be an odd number to make the padding explicit and
|
|
* keep the structure size consistent between 32-bit and 64-bit platforms.
|
|
*/
|
|
#define __XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
|
|
#define XFS_BLF_DATAMAP_SIZE (__XFS_BLF_DATAMAP_SIZE + 1)
|
|
|
|
typedef struct xfs_buf_log_format {
|
|
unsigned short blf_type; /* buf log item type indicator */
|
|
unsigned short blf_size; /* size of this item */
|
|
unsigned short blf_flags; /* misc state */
|
|
unsigned short blf_len; /* number of blocks in this buf */
|
|
int64_t blf_blkno; /* starting blkno of this buf */
|
|
unsigned int blf_map_size; /* used size of data bitmap in words */
|
|
unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
|
|
} xfs_buf_log_format_t;
|
|
|
|
/*
|
|
* All buffers now need to tell recovery where the magic number
|
|
* is so that it can verify and calculate the CRCs on the buffer correctly
|
|
* once the changes have been replayed into the buffer.
|
|
*
|
|
* The type value is held in the upper 5 bits of the blf_flags field, which is
|
|
* an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
|
|
*/
|
|
#define XFS_BLFT_BITS 5
|
|
#define XFS_BLFT_SHIFT 11
|
|
#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
|
|
|
|
enum xfs_blft {
|
|
XFS_BLFT_UNKNOWN_BUF = 0,
|
|
XFS_BLFT_UDQUOT_BUF,
|
|
XFS_BLFT_PDQUOT_BUF,
|
|
XFS_BLFT_GDQUOT_BUF,
|
|
XFS_BLFT_BTREE_BUF,
|
|
XFS_BLFT_AGF_BUF,
|
|
XFS_BLFT_AGFL_BUF,
|
|
XFS_BLFT_AGI_BUF,
|
|
XFS_BLFT_DINO_BUF,
|
|
XFS_BLFT_SYMLINK_BUF,
|
|
XFS_BLFT_DIR_BLOCK_BUF,
|
|
XFS_BLFT_DIR_DATA_BUF,
|
|
XFS_BLFT_DIR_FREE_BUF,
|
|
XFS_BLFT_DIR_LEAF1_BUF,
|
|
XFS_BLFT_DIR_LEAFN_BUF,
|
|
XFS_BLFT_DA_NODE_BUF,
|
|
XFS_BLFT_ATTR_LEAF_BUF,
|
|
XFS_BLFT_ATTR_RMT_BUF,
|
|
XFS_BLFT_SB_BUF,
|
|
XFS_BLFT_RTBITMAP_BUF,
|
|
XFS_BLFT_RTSUMMARY_BUF,
|
|
XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
|
|
};
|
|
|
|
static inline void
|
|
xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
|
|
{
|
|
ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
|
|
blf->blf_flags &= ~XFS_BLFT_MASK;
|
|
blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
|
|
}
|
|
|
|
static inline uint16_t
|
|
xfs_blft_from_flags(struct xfs_buf_log_format *blf)
|
|
{
|
|
return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
|
|
}
|
|
|
|
/*
|
|
* EFI/EFD log format definitions
|
|
*/
|
|
typedef struct xfs_extent {
|
|
xfs_fsblock_t ext_start;
|
|
xfs_extlen_t ext_len;
|
|
} xfs_extent_t;
|
|
|
|
/*
|
|
* Since an xfs_extent_t has types (start:64, len: 32)
|
|
* there are different alignments on 32 bit and 64 bit kernels.
|
|
* So we provide the different variants for use by a
|
|
* conversion routine.
|
|
*/
|
|
typedef struct xfs_extent_32 {
|
|
uint64_t ext_start;
|
|
uint32_t ext_len;
|
|
} __attribute__((packed)) xfs_extent_32_t;
|
|
|
|
typedef struct xfs_extent_64 {
|
|
uint64_t ext_start;
|
|
uint32_t ext_len;
|
|
uint32_t ext_pad;
|
|
} xfs_extent_64_t;
|
|
|
|
/*
|
|
* This is the structure used to lay out an efi log item in the
|
|
* log. The efi_extents field is a variable size array whose
|
|
* size is given by efi_nextents.
|
|
*/
|
|
typedef struct xfs_efi_log_format {
|
|
uint16_t efi_type; /* efi log item type */
|
|
uint16_t efi_size; /* size of this item */
|
|
uint32_t efi_nextents; /* # extents to free */
|
|
uint64_t efi_id; /* efi identifier */
|
|
xfs_extent_t efi_extents[1]; /* array of extents to free */
|
|
} xfs_efi_log_format_t;
|
|
|
|
typedef struct xfs_efi_log_format_32 {
|
|
uint16_t efi_type; /* efi log item type */
|
|
uint16_t efi_size; /* size of this item */
|
|
uint32_t efi_nextents; /* # extents to free */
|
|
uint64_t efi_id; /* efi identifier */
|
|
xfs_extent_32_t efi_extents[1]; /* array of extents to free */
|
|
} __attribute__((packed)) xfs_efi_log_format_32_t;
|
|
|
|
typedef struct xfs_efi_log_format_64 {
|
|
uint16_t efi_type; /* efi log item type */
|
|
uint16_t efi_size; /* size of this item */
|
|
uint32_t efi_nextents; /* # extents to free */
|
|
uint64_t efi_id; /* efi identifier */
|
|
xfs_extent_64_t efi_extents[1]; /* array of extents to free */
|
|
} xfs_efi_log_format_64_t;
|
|
|
|
/*
|
|
* This is the structure used to lay out an efd log item in the
|
|
* log. The efd_extents array is a variable size array whose
|
|
* size is given by efd_nextents;
|
|
*/
|
|
typedef struct xfs_efd_log_format {
|
|
uint16_t efd_type; /* efd log item type */
|
|
uint16_t efd_size; /* size of this item */
|
|
uint32_t efd_nextents; /* # of extents freed */
|
|
uint64_t efd_efi_id; /* id of corresponding efi */
|
|
xfs_extent_t efd_extents[1]; /* array of extents freed */
|
|
} xfs_efd_log_format_t;
|
|
|
|
typedef struct xfs_efd_log_format_32 {
|
|
uint16_t efd_type; /* efd log item type */
|
|
uint16_t efd_size; /* size of this item */
|
|
uint32_t efd_nextents; /* # of extents freed */
|
|
uint64_t efd_efi_id; /* id of corresponding efi */
|
|
xfs_extent_32_t efd_extents[1]; /* array of extents freed */
|
|
} __attribute__((packed)) xfs_efd_log_format_32_t;
|
|
|
|
typedef struct xfs_efd_log_format_64 {
|
|
uint16_t efd_type; /* efd log item type */
|
|
uint16_t efd_size; /* size of this item */
|
|
uint32_t efd_nextents; /* # of extents freed */
|
|
uint64_t efd_efi_id; /* id of corresponding efi */
|
|
xfs_extent_64_t efd_extents[1]; /* array of extents freed */
|
|
} xfs_efd_log_format_64_t;
|
|
|
|
/*
|
|
* RUI/RUD (reverse mapping) log format definitions
|
|
*/
|
|
struct xfs_map_extent {
|
|
uint64_t me_owner;
|
|
uint64_t me_startblock;
|
|
uint64_t me_startoff;
|
|
uint32_t me_len;
|
|
uint32_t me_flags;
|
|
};
|
|
|
|
/* rmap me_flags: upper bits are flags, lower byte is type code */
|
|
#define XFS_RMAP_EXTENT_MAP 1
|
|
#define XFS_RMAP_EXTENT_MAP_SHARED 2
|
|
#define XFS_RMAP_EXTENT_UNMAP 3
|
|
#define XFS_RMAP_EXTENT_UNMAP_SHARED 4
|
|
#define XFS_RMAP_EXTENT_CONVERT 5
|
|
#define XFS_RMAP_EXTENT_CONVERT_SHARED 6
|
|
#define XFS_RMAP_EXTENT_ALLOC 7
|
|
#define XFS_RMAP_EXTENT_FREE 8
|
|
#define XFS_RMAP_EXTENT_TYPE_MASK 0xFF
|
|
|
|
#define XFS_RMAP_EXTENT_ATTR_FORK (1U << 31)
|
|
#define XFS_RMAP_EXTENT_BMBT_BLOCK (1U << 30)
|
|
#define XFS_RMAP_EXTENT_UNWRITTEN (1U << 29)
|
|
|
|
#define XFS_RMAP_EXTENT_FLAGS (XFS_RMAP_EXTENT_TYPE_MASK | \
|
|
XFS_RMAP_EXTENT_ATTR_FORK | \
|
|
XFS_RMAP_EXTENT_BMBT_BLOCK | \
|
|
XFS_RMAP_EXTENT_UNWRITTEN)
|
|
|
|
/*
|
|
* This is the structure used to lay out an rui log item in the
|
|
* log. The rui_extents field is a variable size array whose
|
|
* size is given by rui_nextents.
|
|
*/
|
|
struct xfs_rui_log_format {
|
|
uint16_t rui_type; /* rui log item type */
|
|
uint16_t rui_size; /* size of this item */
|
|
uint32_t rui_nextents; /* # extents to free */
|
|
uint64_t rui_id; /* rui identifier */
|
|
struct xfs_map_extent rui_extents[]; /* array of extents to rmap */
|
|
};
|
|
|
|
static inline size_t
|
|
xfs_rui_log_format_sizeof(
|
|
unsigned int nr)
|
|
{
|
|
return sizeof(struct xfs_rui_log_format) +
|
|
nr * sizeof(struct xfs_map_extent);
|
|
}
|
|
|
|
/*
|
|
* This is the structure used to lay out an rud log item in the
|
|
* log. The rud_extents array is a variable size array whose
|
|
* size is given by rud_nextents;
|
|
*/
|
|
struct xfs_rud_log_format {
|
|
uint16_t rud_type; /* rud log item type */
|
|
uint16_t rud_size; /* size of this item */
|
|
uint32_t __pad;
|
|
uint64_t rud_rui_id; /* id of corresponding rui */
|
|
};
|
|
|
|
/*
|
|
* CUI/CUD (refcount update) log format definitions
|
|
*/
|
|
struct xfs_phys_extent {
|
|
uint64_t pe_startblock;
|
|
uint32_t pe_len;
|
|
uint32_t pe_flags;
|
|
};
|
|
|
|
/* refcount pe_flags: upper bits are flags, lower byte is type code */
|
|
/* Type codes are taken directly from enum xfs_refcount_intent_type. */
|
|
#define XFS_REFCOUNT_EXTENT_TYPE_MASK 0xFF
|
|
|
|
#define XFS_REFCOUNT_EXTENT_FLAGS (XFS_REFCOUNT_EXTENT_TYPE_MASK)
|
|
|
|
/*
|
|
* This is the structure used to lay out a cui log item in the
|
|
* log. The cui_extents field is a variable size array whose
|
|
* size is given by cui_nextents.
|
|
*/
|
|
struct xfs_cui_log_format {
|
|
uint16_t cui_type; /* cui log item type */
|
|
uint16_t cui_size; /* size of this item */
|
|
uint32_t cui_nextents; /* # extents to free */
|
|
uint64_t cui_id; /* cui identifier */
|
|
struct xfs_phys_extent cui_extents[]; /* array of extents */
|
|
};
|
|
|
|
static inline size_t
|
|
xfs_cui_log_format_sizeof(
|
|
unsigned int nr)
|
|
{
|
|
return sizeof(struct xfs_cui_log_format) +
|
|
nr * sizeof(struct xfs_phys_extent);
|
|
}
|
|
|
|
/*
|
|
* This is the structure used to lay out a cud log item in the
|
|
* log. The cud_extents array is a variable size array whose
|
|
* size is given by cud_nextents;
|
|
*/
|
|
struct xfs_cud_log_format {
|
|
uint16_t cud_type; /* cud log item type */
|
|
uint16_t cud_size; /* size of this item */
|
|
uint32_t __pad;
|
|
uint64_t cud_cui_id; /* id of corresponding cui */
|
|
};
|
|
|
|
/*
|
|
* BUI/BUD (inode block mapping) log format definitions
|
|
*/
|
|
|
|
/* bmbt me_flags: upper bits are flags, lower byte is type code */
|
|
/* Type codes are taken directly from enum xfs_bmap_intent_type. */
|
|
#define XFS_BMAP_EXTENT_TYPE_MASK 0xFF
|
|
|
|
#define XFS_BMAP_EXTENT_ATTR_FORK (1U << 31)
|
|
#define XFS_BMAP_EXTENT_UNWRITTEN (1U << 30)
|
|
|
|
#define XFS_BMAP_EXTENT_FLAGS (XFS_BMAP_EXTENT_TYPE_MASK | \
|
|
XFS_BMAP_EXTENT_ATTR_FORK | \
|
|
XFS_BMAP_EXTENT_UNWRITTEN)
|
|
|
|
/*
|
|
* This is the structure used to lay out an bui log item in the
|
|
* log. The bui_extents field is a variable size array whose
|
|
* size is given by bui_nextents.
|
|
*/
|
|
struct xfs_bui_log_format {
|
|
uint16_t bui_type; /* bui log item type */
|
|
uint16_t bui_size; /* size of this item */
|
|
uint32_t bui_nextents; /* # extents to free */
|
|
uint64_t bui_id; /* bui identifier */
|
|
struct xfs_map_extent bui_extents[]; /* array of extents to bmap */
|
|
};
|
|
|
|
static inline size_t
|
|
xfs_bui_log_format_sizeof(
|
|
unsigned int nr)
|
|
{
|
|
return sizeof(struct xfs_bui_log_format) +
|
|
nr * sizeof(struct xfs_map_extent);
|
|
}
|
|
|
|
/*
|
|
* This is the structure used to lay out an bud log item in the
|
|
* log. The bud_extents array is a variable size array whose
|
|
* size is given by bud_nextents;
|
|
*/
|
|
struct xfs_bud_log_format {
|
|
uint16_t bud_type; /* bud log item type */
|
|
uint16_t bud_size; /* size of this item */
|
|
uint32_t __pad;
|
|
uint64_t bud_bui_id; /* id of corresponding bui */
|
|
};
|
|
|
|
/*
|
|
* Dquot Log format definitions.
|
|
*
|
|
* The first two fields must be the type and size fitting into
|
|
* 32 bits : log_recovery code assumes that.
|
|
*/
|
|
typedef struct xfs_dq_logformat {
|
|
uint16_t qlf_type; /* dquot log item type */
|
|
uint16_t qlf_size; /* size of this item */
|
|
xfs_dqid_t qlf_id; /* usr/grp/proj id : 32 bits */
|
|
int64_t qlf_blkno; /* blkno of dquot buffer */
|
|
int32_t qlf_len; /* len of dquot buffer */
|
|
uint32_t qlf_boffset; /* off of dquot in buffer */
|
|
} xfs_dq_logformat_t;
|
|
|
|
/*
|
|
* log format struct for QUOTAOFF records.
|
|
* The first two fields must be the type and size fitting into
|
|
* 32 bits : log_recovery code assumes that.
|
|
* We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
|
|
* to the first and ensures that the first logitem is taken out of the AIL
|
|
* only when the last one is securely committed.
|
|
*/
|
|
typedef struct xfs_qoff_logformat {
|
|
unsigned short qf_type; /* quotaoff log item type */
|
|
unsigned short qf_size; /* size of this item */
|
|
unsigned int qf_flags; /* USR and/or GRP */
|
|
char qf_pad[12]; /* padding for future */
|
|
} xfs_qoff_logformat_t;
|
|
|
|
/*
|
|
* Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
|
|
*/
|
|
#define XFS_UQUOTA_ACCT 0x0001 /* user quota accounting ON */
|
|
#define XFS_UQUOTA_ENFD 0x0002 /* user quota limits enforced */
|
|
#define XFS_UQUOTA_CHKD 0x0004 /* quotacheck run on usr quotas */
|
|
#define XFS_PQUOTA_ACCT 0x0008 /* project quota accounting ON */
|
|
#define XFS_OQUOTA_ENFD 0x0010 /* other (grp/prj) quota limits enforced */
|
|
#define XFS_OQUOTA_CHKD 0x0020 /* quotacheck run on other (grp/prj) quotas */
|
|
#define XFS_GQUOTA_ACCT 0x0040 /* group quota accounting ON */
|
|
|
|
/*
|
|
* Conversion to and from the combined OQUOTA flag (if necessary)
|
|
* is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
|
|
*/
|
|
#define XFS_GQUOTA_ENFD 0x0080 /* group quota limits enforced */
|
|
#define XFS_GQUOTA_CHKD 0x0100 /* quotacheck run on group quotas */
|
|
#define XFS_PQUOTA_ENFD 0x0200 /* project quota limits enforced */
|
|
#define XFS_PQUOTA_CHKD 0x0400 /* quotacheck run on project quotas */
|
|
|
|
#define XFS_ALL_QUOTA_ACCT \
|
|
(XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
|
|
#define XFS_ALL_QUOTA_ENFD \
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(XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
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#define XFS_ALL_QUOTA_CHKD \
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(XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
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#define XFS_MOUNT_QUOTA_ALL (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
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XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
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XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
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XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
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XFS_PQUOTA_CHKD)
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/*
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* Inode create log item structure
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|
*
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|
* Log recovery assumes the first two entries are the type and size and they fit
|
|
* in 32 bits. Also in host order (ugh) so they have to be 32 bit aligned so
|
|
* decoding can be done correctly.
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|
*/
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|
struct xfs_icreate_log {
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|
uint16_t icl_type; /* type of log format structure */
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|
uint16_t icl_size; /* size of log format structure */
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|
__be32 icl_ag; /* ag being allocated in */
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|
__be32 icl_agbno; /* start block of inode range */
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|
__be32 icl_count; /* number of inodes to initialise */
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|
__be32 icl_isize; /* size of inodes */
|
|
__be32 icl_length; /* length of extent to initialise */
|
|
__be32 icl_gen; /* inode generation number to use */
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|
};
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|
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#endif /* __XFS_LOG_FORMAT_H__ */
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