printf: Remove unused 'bprintf'

[drm/drm-misc.git] / fs / xfs / libxfs / xfs_log_format.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_LOG_FORMAT_H__
#define __XFS_LOG_FORMAT_H__

struct xfs_mount;
struct xfs_trans_res;

/*
 * On-disk Log Format definitions.
 *
 * This file contains all the on-disk format definitions used within the log. It
 * includes the physical log structure itself, as well as all the log item
 * format structures that are written into the log and intepreted by log
 * recovery. We start with the physical log format definitions, and then work
 * through all the log items definitions and everything they encode into the
 * log.
 */
typedef uint32_t xlog_tid_t;

#define XLOG_MIN_ICLOGS         2
#define XLOG_MAX_ICLOGS         8
#define XLOG_HEADER_MAGIC_NUM   0xFEEDbabe      /* Invalid cycle number */
#define XLOG_VERSION_1          1
#define XLOG_VERSION_2          2               /* Large IClogs, Log sunit */
#define XLOG_VERSION_OKBITS     (XLOG_VERSION_1 | XLOG_VERSION_2)
#define XLOG_MIN_RECORD_BSIZE   (16*1024)       /* eventually 32k */
#define XLOG_BIG_RECORD_BSIZE   (32*1024)       /* 32k buffers */
#define XLOG_MAX_RECORD_BSIZE   (256*1024)
#define XLOG_HEADER_CYCLE_SIZE  (32*1024)       /* cycle data in header */
#define XLOG_MIN_RECORD_BSHIFT  14              /* 16384 == 1 << 14 */
#define XLOG_BIG_RECORD_BSHIFT  15              /* 32k == 1 << 15 */
#define XLOG_MAX_RECORD_BSHIFT  18              /* 256k == 1 << 18 */

#define XLOG_HEADER_SIZE        512

/* Minimum number of transactions that must fit in the log (defined by mkfs) */
#define XFS_MIN_LOG_FACTOR      3

#define XLOG_REC_SHIFT(log) \
        BTOBB(1 << (xfs_has_logv2(log->l_mp) ? \
         XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
#define XLOG_TOTAL_REC_SHIFT(log) \
        BTOBB(XLOG_MAX_ICLOGS << (xfs_has_logv2(log->l_mp) ? \
         XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))

/* 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) (((__be32 *)&(lsn))[0])

static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
{
        return ((xfs_lsn_t)cycle << 32) | block;
}

static inline uint xlog_get_cycle(char *ptr)
{
        if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
                return be32_to_cpu(*((__be32 *)ptr + 1));
        else
                return be32_to_cpu(*(__be32 *)ptr);
}

/* Log Clients */
#define XFS_TRANSACTION         0x69
#define XFS_LOG                 0xaa

#define XLOG_UNMOUNT_TYPE       0x556e  /* Un for Unmount */

/*
 * Log item for unmount records.
 *
 * The unmount record used to have a string "Unmount filesystem--" in the
 * data section where the "Un" was really a magic number (XLOG_UNMOUNT_TYPE).
 * We just write the magic number now; see xfs_log_unmount_write.
 */
struct xfs_unmount_log_format {
        uint16_t        magic;  /* XLOG_UNMOUNT_TYPE */
        uint16_t        pad1;
        uint32_t        pad2;   /* may as well make it 64 bits */
};

/* 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_ICREATE           20
#define XLOG_REG_TYPE_RUI_FORMAT        21
#define XLOG_REG_TYPE_RUD_FORMAT        22
#define XLOG_REG_TYPE_CUI_FORMAT        23
#define XLOG_REG_TYPE_CUD_FORMAT        24
#define XLOG_REG_TYPE_BUI_FORMAT        25
#define XLOG_REG_TYPE_BUD_FORMAT        26
#define XLOG_REG_TYPE_ATTRI_FORMAT      27
#define XLOG_REG_TYPE_ATTRD_FORMAT      28
#define XLOG_REG_TYPE_ATTR_NAME         29
#define XLOG_REG_TYPE_ATTR_VALUE        30
#define XLOG_REG_TYPE_XMI_FORMAT        31
#define XLOG_REG_TYPE_XMD_FORMAT        32
#define XLOG_REG_TYPE_ATTR_NEWNAME      33
#define XLOG_REG_TYPE_ATTR_NEWVALUE     34
#define XLOG_REG_TYPE_MAX               34

/*
 * Flags to log operation header
 *
 * The first write of a new transaction will be preceded with a start
 * record, XLOG_START_TRANS.  Once a transaction is committed, a commit
 * record is written, XLOG_COMMIT_TRANS.  If a single region can not fit into
 * the remainder of the current active in-core log, it is split up into
 * multiple regions.  Each partial region will be marked with a
 * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
 *
 */
#define XLOG_START_TRANS        0x01    /* Start a new transaction */
#define XLOG_COMMIT_TRANS       0x02    /* Commit this transaction */
#define XLOG_CONTINUE_TRANS     0x04    /* Cont this trans into new region */
#define XLOG_WAS_CONT_TRANS     0x08    /* Cont this trans into new region */
#define XLOG_END_TRANS          0x10    /* End a continued transaction */
#define XLOG_UNMOUNT_TRANS      0x20    /* Unmount a filesystem transaction */


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;

/*
 * 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;

/* not an on-disk structure, but needed by log recovery in userspace */
typedef struct xfs_log_iovec {
        void            *i_addr;        /* beginning address of region */
        int             i_len;          /* length in bytes of region */
        uint            i_type;         /* type of region */
} xfs_log_iovec_t;


/*
 * Transaction Header definitions.
 *
 * This is the structure written in the log at the head of every transaction. It
 * identifies the type and id of the transaction, and contains the number of
 * items logged by the transaction so we know how many to expect during
 * recovery.
 *
 * Do not change the below structure without redoing the code in
 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
 */
typedef struct xfs_trans_header {
        uint            th_magic;               /* magic number */
        uint            th_type;                /* transaction type */
        int32_t         th_tid;                 /* transaction id (unused) */
        uint            th_num_items;           /* num items logged by trans */
} xfs_trans_header_t;

#define XFS_TRANS_HEADER_MAGIC  0x5452414e      /* TRAN */

/*
 * The only type valid for th_type in CIL-enabled file system logs:
 */
#define XFS_TRANS_CHECKPOINT    40

/*
 * Log item types.
 */
#define XFS_LI_EFI              0x1236
#define XFS_LI_EFD              0x1237
#define XFS_LI_IUNLINK          0x1238
#define XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size ibufs */
#define XFS_LI_BUF              0x123c  /* v2 bufs, variable sized inode bufs */
#define XFS_LI_DQUOT            0x123d
#define XFS_LI_QUOTAOFF         0x123e
#define XFS_LI_ICREATE          0x123f
#define XFS_LI_RUI              0x1240  /* rmap update intent */
#define XFS_LI_RUD              0x1241
#define XFS_LI_CUI              0x1242  /* refcount update intent */
#define XFS_LI_CUD              0x1243
#define XFS_LI_BUI              0x1244  /* bmbt update intent */
#define XFS_LI_BUD              0x1245
#define XFS_LI_ATTRI            0x1246  /* attr set/remove intent*/
#define XFS_LI_ATTRD            0x1247  /* attr set/remove done */
#define XFS_LI_XMI              0x1248  /* mapping exchange intent */
#define XFS_LI_XMD              0x1249  /* mapping exchange done */
#define XFS_LI_EFI_RT           0x124a  /* realtime extent free intent */
#define XFS_LI_EFD_RT           0x124b  /* realtime extent free done */

#define XFS_LI_TYPE_DESC \
        { XFS_LI_EFI,           "XFS_LI_EFI" }, \
        { XFS_LI_EFD,           "XFS_LI_EFD" }, \
        { XFS_LI_IUNLINK,       "XFS_LI_IUNLINK" }, \
        { XFS_LI_INODE,         "XFS_LI_INODE" }, \
        { XFS_LI_BUF,           "XFS_LI_BUF" }, \
        { XFS_LI_DQUOT,         "XFS_LI_DQUOT" }, \
        { XFS_LI_QUOTAOFF,      "XFS_LI_QUOTAOFF" }, \
        { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }, \
        { XFS_LI_RUI,           "XFS_LI_RUI" }, \
        { XFS_LI_RUD,           "XFS_LI_RUD" }, \
        { XFS_LI_CUI,           "XFS_LI_CUI" }, \
        { XFS_LI_CUD,           "XFS_LI_CUD" }, \
        { XFS_LI_BUI,           "XFS_LI_BUI" }, \
        { XFS_LI_BUD,           "XFS_LI_BUD" }, \
        { XFS_LI_ATTRI,         "XFS_LI_ATTRI" }, \
        { XFS_LI_ATTRD,         "XFS_LI_ATTRD" }, \
        { XFS_LI_XMI,           "XFS_LI_XMI" }, \
        { XFS_LI_XMD,           "XFS_LI_XMD" }, \
        { XFS_LI_EFI_RT,        "XFS_LI_EFI_RT" }, \
        { XFS_LI_EFD_RT,        "XFS_LI_EFD_RT" }

/*
 * Inode Log Item Format definitions.
 *
 * This is the structure used to lay out an inode log item in the
 * log.  The size of the inline data/extents/b-tree root to be logged
 * (if any) is indicated in the ilf_dsize field.  Changes to this structure
 * must be added on to the end.
 */
struct xfs_inode_log_format {
        uint16_t                ilf_type;       /* inode log item type */
        uint16_t                ilf_size;       /* size of this item */
        uint32_t                ilf_fields;     /* flags for fields logged */
        uint16_t                ilf_asize;      /* size of attr d/ext/root */
        uint16_t                ilf_dsize;      /* size of data/ext/root */
        uint32_t                ilf_pad;        /* pad for 64 bit boundary */
        uint64_t                ilf_ino;        /* inode number */
        union {
                uint32_t        ilfu_rdev;      /* rdev value for dev inode*/
                uint8_t         __pad[16];      /* unused */
        } ilf_u;
        int64_t                 ilf_blkno;      /* blkno of inode buffer */
        int32_t                 ilf_len;        /* len of inode buffer */
        int32_t                 ilf_boffset;    /* off of inode in buffer */
};

/*
 * Old 32 bit systems will log in this format without the 64 bit
 * alignment padding. Recovery will detect this and convert it to the
 * correct format.
 */
struct xfs_inode_log_format_32 {
        uint16_t                ilf_type;       /* inode log item type */
        uint16_t                ilf_size;       /* size of this item */
        uint32_t                ilf_fields;     /* flags for fields logged */
        uint16_t                ilf_asize;      /* size of attr d/ext/root */
        uint16_t                ilf_dsize;      /* size of data/ext/root */
        uint64_t                ilf_ino;        /* inode number */
        union {
                uint32_t        ilfu_rdev;      /* rdev value for dev inode*/
                uint8_t         __pad[16];      /* unused */
        } ilf_u;
        int64_t                 ilf_blkno;      /* blkno of inode buffer */
        int32_t                 ilf_len;        /* len of inode buffer */
        int32_t                 ilf_boffset;    /* off of inode in buffer */
} __attribute__((packed));


/*
 * Flags for xfs_trans_log_inode flags field.
 */
#define XFS_ILOG_CORE   0x001   /* log standard inode fields */
#define XFS_ILOG_DDATA  0x002   /* log i_df.if_data */
#define XFS_ILOG_DEXT   0x004   /* log i_df.if_extents */
#define XFS_ILOG_DBROOT 0x008   /* log i_df.i_broot */
#define XFS_ILOG_DEV    0x010   /* log the dev field */
#define XFS_ILOG_UUID   0x020   /* added long ago, but never used */
#define XFS_ILOG_ADATA  0x040   /* log i_af.if_data */
#define XFS_ILOG_AEXT   0x080   /* log i_af.if_extents */
#define XFS_ILOG_ABROOT 0x100   /* log i_af.i_broot */
#define XFS_ILOG_DOWNER 0x200   /* change the data fork owner on replay */
#define XFS_ILOG_AOWNER 0x400   /* change the attr fork owner on replay */

/*
 * The timestamps are dirty, but not necessarily anything else in the inode
 * core.  Unlike the other fields above this one must never make it to disk
 * in the ilf_fields of the inode_log_format, but is purely store in-memory in
 * ili_fields in the inode_log_item.
 */
#define XFS_ILOG_TIMESTAMP      0x4000

/*
 * The version field has been changed, but not necessarily anything else of
 * interest. This must never make it to disk - it is used purely to ensure that
 * the inode item ->precommit operation can update the fsync flag triggers
 * in the inode item correctly.
 */
#define XFS_ILOG_IVERSION       0x8000

#define XFS_ILOG_NONCORE        (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
                                 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
                                 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
                                 XFS_ILOG_ABROOT | XFS_ILOG_DOWNER | \
                                 XFS_ILOG_AOWNER)

#define XFS_ILOG_DFORK          (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
                                 XFS_ILOG_DBROOT)

#define XFS_ILOG_AFORK          (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
                                 XFS_ILOG_ABROOT)

#define XFS_ILOG_ALL            (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
                                 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
                                 XFS_ILOG_DEV | XFS_ILOG_ADATA | \
                                 XFS_ILOG_AEXT | XFS_ILOG_ABROOT | \
                                 XFS_ILOG_TIMESTAMP | XFS_ILOG_DOWNER | \
                                 XFS_ILOG_AOWNER)

static inline int xfs_ilog_fbroot(int w)
{
        return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
}

static inline int xfs_ilog_fext(int w)
{
        return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
}

static inline int xfs_ilog_fdata(int w)
{
        return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
}

/*
 * Incore version of the on-disk inode core structures. We log this directly
 * into the journal in host CPU format (for better or worse) and as such
 * directly mirrors the xfs_dinode structure as it must contain all the same
 * information.
 */
typedef uint64_t xfs_log_timestamp_t;

/* Legacy timestamp encoding format. */
struct xfs_log_legacy_timestamp {
        int32_t         t_sec;          /* timestamp seconds */
        int32_t         t_nsec;         /* timestamp nanoseconds */
};

/*
 * Define the format of the inode core that is logged. This structure must be
 * kept identical to struct xfs_dinode except for the endianness annotations.
 */
struct xfs_log_dinode {
        uint16_t        di_magic;       /* inode magic # = XFS_DINODE_MAGIC */
        uint16_t        di_mode;        /* mode and type of file */
        int8_t          di_version;     /* inode version */
        int8_t          di_format;      /* format of di_c data */
        uint16_t        di_metatype;    /* metadata type, if DIFLAG2_METADATA */
        uint32_t        di_uid;         /* owner's user id */
        uint32_t        di_gid;         /* owner's group id */
        uint32_t        di_nlink;       /* number of links to file */
        uint16_t        di_projid_lo;   /* lower part of owner's project id */
        uint16_t        di_projid_hi;   /* higher part of owner's project id */
        union {
                /* Number of data fork extents if NREXT64 is set */
                uint64_t        di_big_nextents;

                /* Padding for V3 inodes without NREXT64 set. */
                uint64_t        di_v3_pad;

                /* Padding and inode flush counter for V2 inodes. */
                struct {
                        uint8_t di_v2_pad[6];   /* V2 inode zeroed space */
                        uint16_t di_flushiter;  /* V2 inode incremented on flush */
                };
        };
        xfs_log_timestamp_t di_atime;   /* time last accessed */
        xfs_log_timestamp_t di_mtime;   /* time last modified */
        xfs_log_timestamp_t di_ctime;   /* time created/inode modified */
        xfs_fsize_t     di_size;        /* number of bytes in file */
        xfs_rfsblock_t  di_nblocks;     /* # of direct & btree blocks used */
        xfs_extlen_t    di_extsize;     /* basic/minimum extent size for file */
        union {
                /*
                 * For V2 inodes and V3 inodes without NREXT64 set, this
                 * is the number of data and attr fork extents.
                 */
                struct {
                        uint32_t  di_nextents;
                        uint16_t  di_anextents;
                } __packed;

                /* Number of attr fork extents if NREXT64 is set. */
                struct {
                        uint32_t  di_big_anextents;
                        uint16_t  di_nrext64_pad;
                } __packed;
        } __packed;
        uint8_t         di_forkoff;     /* attr fork offs, <<3 for 64b align */
        int8_t          di_aformat;     /* format of attr fork's data */
        uint32_t        di_dmevmask;    /* DMIG event mask */
        uint16_t        di_dmstate;     /* DMIG state info */
        uint16_t        di_flags;       /* random flags, XFS_DIFLAG_... */
        uint32_t        di_gen;         /* generation number */

        /* di_next_unlinked is the only non-core field in the old dinode */
        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_has_v3inodes((mp)) ?                                       \
                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[];  /* array of extents to free */
} xfs_efi_log_format_t;

static inline size_t
xfs_efi_log_format_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efi_log_format) +
                        nr * sizeof(struct xfs_extent);
}

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[];  /* array of extents to free */
} __attribute__((packed)) xfs_efi_log_format_32_t;

static inline size_t
xfs_efi_log_format32_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efi_log_format_32) +
                        nr * sizeof(struct xfs_extent_32);
}

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[];  /* array of extents to free */
} xfs_efi_log_format_64_t;

static inline size_t
xfs_efi_log_format64_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efi_log_format_64) +
                        nr * sizeof(struct xfs_extent_64);
}

/*
 * 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[];  /* array of extents freed */
} xfs_efd_log_format_t;

static inline size_t
xfs_efd_log_format_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efd_log_format) +
                        nr * sizeof(struct xfs_extent);
}

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[];  /* array of extents freed */
} __attribute__((packed)) xfs_efd_log_format_32_t;

static inline size_t
xfs_efd_log_format32_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efd_log_format_32) +
                        nr * sizeof(struct xfs_extent_32);
}

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[];  /* array of extents freed */
} xfs_efd_log_format_64_t;

static inline size_t
xfs_efd_log_format64_sizeof(
        unsigned int            nr)
{
        return sizeof(struct xfs_efd_log_format_64) +
                        nr * sizeof(struct xfs_extent_64);
}

/*
 * 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_REALTIME        (1U << 29)

#define XFS_BMAP_EXTENT_FLAGS           (XFS_BMAP_EXTENT_TYPE_MASK | \
                                         XFS_BMAP_EXTENT_ATTR_FORK | \
                                         XFS_BMAP_EXTENT_UNWRITTEN | \
                                         XFS_BMAP_EXTENT_REALTIME)

/*
 * 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 */
};

/*
 * XMI/XMD (file mapping exchange) log format definitions
 */

/* This is the structure used to lay out an mapping exchange log item. */
struct xfs_xmi_log_format {
        uint16_t                xmi_type;       /* xmi log item type */
        uint16_t                xmi_size;       /* size of this item */
        uint32_t                __pad;          /* must be zero */
        uint64_t                xmi_id;         /* xmi identifier */

        uint64_t                xmi_inode1;     /* inumber of first file */
        uint64_t                xmi_inode2;     /* inumber of second file */
        uint32_t                xmi_igen1;      /* generation of first file */
        uint32_t                xmi_igen2;      /* generation of second file */
        uint64_t                xmi_startoff1;  /* block offset into file1 */
        uint64_t                xmi_startoff2;  /* block offset into file2 */
        uint64_t                xmi_blockcount; /* number of blocks */
        uint64_t                xmi_flags;      /* XFS_EXCHMAPS_* */
        uint64_t                xmi_isize1;     /* intended file1 size */
        uint64_t                xmi_isize2;     /* intended file2 size */
};

/* Exchange mappings between extended attribute forks instead of data forks. */
#define XFS_EXCHMAPS_ATTR_FORK          (1ULL << 0)

/* Set the file sizes when finished. */
#define XFS_EXCHMAPS_SET_SIZES          (1ULL << 1)

/*
 * Exchange the mappings of the two files only if the file allocation units
 * mapped to file1's range have been written.
 */
#define XFS_EXCHMAPS_INO1_WRITTEN       (1ULL << 2)

/* Clear the reflink flag from inode1 after the operation. */
#define XFS_EXCHMAPS_CLEAR_INO1_REFLINK (1ULL << 3)

/* Clear the reflink flag from inode2 after the operation. */
#define XFS_EXCHMAPS_CLEAR_INO2_REFLINK (1ULL << 4)

#define XFS_EXCHMAPS_LOGGED_FLAGS       (XFS_EXCHMAPS_ATTR_FORK | \
                                         XFS_EXCHMAPS_SET_SIZES | \
                                         XFS_EXCHMAPS_INO1_WRITTEN | \
                                         XFS_EXCHMAPS_CLEAR_INO1_REFLINK | \
                                         XFS_EXCHMAPS_CLEAR_INO2_REFLINK)

/* This is the structure used to lay out an mapping exchange done log item. */
struct xfs_xmd_log_format {
        uint16_t                xmd_type;       /* xmd log item type */
        uint16_t                xmd_size;       /* size of this item */
        uint32_t                __pad;
        uint64_t                xmd_xmi_id;     /* id of corresponding xmi */
};

/*
 * 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      \
                (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
#define XFS_ALL_QUOTA_CHKD      \
                (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)

#define XFS_MOUNT_QUOTA_ALL     (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
                                 XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
                                 XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
                                 XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
                                 XFS_PQUOTA_CHKD)

/*
 * Inode create log item structure
 *
 * 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.
 */
struct xfs_icreate_log {
        uint16_t        icl_type;       /* type of log format structure */
        uint16_t        icl_size;       /* size of log format structure */
        __be32          icl_ag;         /* ag being allocated in */
        __be32          icl_agbno;      /* start block of inode range */
        __be32          icl_count;      /* number of inodes to initialise */
        __be32          icl_isize;      /* size of inodes */
        __be32          icl_length;     /* length of extent to initialise */
        __be32          icl_gen;        /* inode generation number to use */
};

/*
 * Flags for deferred attribute operations.
 * Upper bits are flags, lower byte is type code
 */
#define XFS_ATTRI_OP_FLAGS_SET          1       /* Set the attribute */
#define XFS_ATTRI_OP_FLAGS_REMOVE       2       /* Remove the attribute */
#define XFS_ATTRI_OP_FLAGS_REPLACE      3       /* Replace the attribute */
#define XFS_ATTRI_OP_FLAGS_PPTR_SET     4       /* Set parent pointer */
#define XFS_ATTRI_OP_FLAGS_PPTR_REMOVE  5       /* Remove parent pointer */
#define XFS_ATTRI_OP_FLAGS_PPTR_REPLACE 6       /* Replace parent pointer */
#define XFS_ATTRI_OP_FLAGS_TYPE_MASK    0xFF    /* Flags type mask */

/*
 * alfi_attr_filter captures the state of xfs_da_args.attr_filter, so it should
 * never have any other bits set.
 */
#define XFS_ATTRI_FILTER_MASK           (XFS_ATTR_ROOT | \
                                         XFS_ATTR_SECURE | \
                                         XFS_ATTR_PARENT | \
                                         XFS_ATTR_INCOMPLETE)

/*
 * This is the structure used to lay out an attr log item in the
 * log.
 */
struct xfs_attri_log_format {
        uint16_t        alfi_type;      /* attri log item type */
        uint16_t        alfi_size;      /* size of this item */
        uint32_t        alfi_igen;      /* generation of alfi_ino for pptr ops */
        uint64_t        alfi_id;        /* attri identifier */
        uint64_t        alfi_ino;       /* the inode for this attr operation */
        uint32_t        alfi_op_flags;  /* marks the op as a set or remove */
        union {
                uint32_t        alfi_name_len;  /* attr name length */
                struct {
                        /*
                         * For PPTR_REPLACE, these are the lengths of the old
                         * and new attr names.  The new and old values must
                         * have the same length.
                         */
                        uint16_t        alfi_old_name_len;
                        uint16_t        alfi_new_name_len;
                };
        };
        uint32_t        alfi_value_len; /* attr value length */
        uint32_t        alfi_attr_filter;/* attr filter flags */
};

struct xfs_attrd_log_format {
        uint16_t        alfd_type;      /* attrd log item type */
        uint16_t        alfd_size;      /* size of this item */
        uint32_t        __pad;          /* pad to 64 bit aligned */
        uint64_t        alfd_alf_id;    /* id of corresponding attri */
};

#endif /* __XFS_LOG_FORMAT_H__ */