// 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_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 */
};
/* * 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 */
typedefstruct 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;
typedefstruct 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];
/* fields added by the Linux port: */
__be32 h_fmt; /* format of log record : 4 */
uuid_t h_fs_uuid; /* uuid of FS : 16 */
/* * When h_size added for log v2 support, it caused structure to have * a different size on i386 vs all other architectures because the * sum of the size ofthe member is not aligned by that of the largest * __be64-sized member, and i386 has really odd struct alignment rules. * * Due to the way the log headers are placed out on-disk that alone is * not a problem becaue the xlog_rec_header always sits alone in a * BBSIZEs area, and the rest of that area is padded with zeroes. * But xlog_cksum used to calculate the checksum based on the structure * size, and thus gives different checksums for i386 vs the rest. * We now do two checksum validation passes for both sizes to allow * moving v5 file systems with unclean logs between i386 and other * (little-endian) architectures.
*/
__u32 h_pad0;
} xlog_rec_header_t;
/* * Quite misnamed, because this union lays out the actual on-disk log buffer.
*/ typedefunion 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 */ typedefstruct 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().
*/ typedefstruct 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;
/* * 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
/* * 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;
/* * 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 */ union { /* basic cow extent size for (regular) file */
uint32_t di_cowextsize; /* used blocks in RTG for (zoned) rtrmap inode */
uint32_t di_used_blocks;
};
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 */
};
/* * 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(unsignedint))
/* * 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)
typedefstruct xfs_buf_log_format { unsignedshort blf_type; /* buf log item type indicator */ unsignedshort blf_size; /* size of this item */ unsignedshort blf_flags; /* misc state */ unsignedshort blf_len; /* number of blocks in this buf */
int64_t blf_blkno; /* starting blkno of this buf */ unsignedint blf_map_size; /* used size of data bitmap in words */ unsignedint 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)
/* * 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.
*/ typedefstruct xfs_extent_32 {
uint64_t ext_start;
uint32_t ext_len;
} __attribute__((packed)) xfs_extent_32_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.
*/ typedefstruct 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;
/* * 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;
*/ typedefstruct 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;
/* * 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 */
};
/* * 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 */
};
/* 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
/* * 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 */
};
/* * 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
/* * 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 */
};
/* * 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)
/* 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.
*/ typedefstruct 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.
*/ typedefstruct xfs_qoff_logformat { unsignedshort qf_type; /* quotaoff log item type */ unsignedshort qf_size; /* size of this item */ unsignedint 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 */
/* * 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 */
};
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