^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * ocfs2_fs.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * On-disk structures for OCFS2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2002, 2004 Oracle. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef _OCFS2_FS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define _OCFS2_FS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/magic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define OCFS2_MAJOR_REV_LEVEL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define OCFS2_MINOR_REV_LEVEL 90
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * An OCFS2 volume starts this way:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Sector 0: Valid ocfs1_vol_disk_hdr that cleanly fails to mount OCFS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Sector 1: Valid ocfs1_vol_label that cleanly fails to mount OCFS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Block OCFS2_SUPER_BLOCK_BLKNO: OCFS2 superblock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * All other structures are found from the superblock information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * OCFS2_SUPER_BLOCK_BLKNO is in blocks, not sectors. eg, for a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * blocksize of 2K, it is 4096 bytes into disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define OCFS2_SUPER_BLOCK_BLKNO 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Cluster size limits. The maximum is kept arbitrarily at 1 MB, and could
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * grow if needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define OCFS2_MIN_CLUSTERSIZE 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define OCFS2_MAX_CLUSTERSIZE 1048576
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * Blocks cannot be bigger than clusters, so the maximum blocksize is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * minimum cluster size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define OCFS2_MIN_BLOCKSIZE 512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define OCFS2_MAX_BLOCKSIZE OCFS2_MIN_CLUSTERSIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Object signatures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define OCFS2_INODE_SIGNATURE "INODE01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define OCFS2_EXTENT_BLOCK_SIGNATURE "EXBLK01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define OCFS2_GROUP_DESC_SIGNATURE "GROUP01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define OCFS2_XATTR_BLOCK_SIGNATURE "XATTR01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define OCFS2_DIR_TRAILER_SIGNATURE "DIRTRL1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define OCFS2_DX_ROOT_SIGNATURE "DXDIR01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define OCFS2_DX_LEAF_SIGNATURE "DXLEAF1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define OCFS2_REFCOUNT_BLOCK_SIGNATURE "REFCNT1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Compatibility flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define OCFS2_HAS_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ( OCFS2_SB(sb)->s_feature_compat & (mask) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define OCFS2_HAS_RO_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ( OCFS2_SB(sb)->s_feature_ro_compat & (mask) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define OCFS2_HAS_INCOMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ( OCFS2_SB(sb)->s_feature_incompat & (mask) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define OCFS2_SET_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) OCFS2_SB(sb)->s_feature_compat |= (mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define OCFS2_SET_RO_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) OCFS2_SB(sb)->s_feature_ro_compat |= (mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define OCFS2_SET_INCOMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) OCFS2_SB(sb)->s_feature_incompat |= (mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define OCFS2_CLEAR_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) OCFS2_SB(sb)->s_feature_compat &= ~(mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define OCFS2_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) OCFS2_SB(sb)->s_feature_ro_compat &= ~(mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define OCFS2_CLEAR_INCOMPAT_FEATURE(sb,mask) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) OCFS2_SB(sb)->s_feature_incompat &= ~(mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define OCFS2_FEATURE_COMPAT_SUPP (OCFS2_FEATURE_COMPAT_BACKUP_SB \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) | OCFS2_FEATURE_COMPAT_JBD2_SB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define OCFS2_FEATURE_INCOMPAT_SUPP (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) | OCFS2_FEATURE_INCOMPAT_INLINE_DATA \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) | OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) | OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) | OCFS2_FEATURE_INCOMPAT_XATTR \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) | OCFS2_FEATURE_INCOMPAT_META_ECC \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) | OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) | OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) | OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) | OCFS2_FEATURE_INCOMPAT_CLUSTERINFO \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) | OCFS2_FEATURE_INCOMPAT_APPEND_DIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define OCFS2_FEATURE_RO_COMPAT_SUPP (OCFS2_FEATURE_RO_COMPAT_UNWRITTEN \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) | OCFS2_FEATURE_RO_COMPAT_USRQUOTA \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Heartbeat-only devices are missing journals and other files. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * filesystem driver can't load them, but the library can. Never put
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * this in OCFS2_FEATURE_INCOMPAT_SUPP, *ever*.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define OCFS2_FEATURE_INCOMPAT_HEARTBEAT_DEV 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * tunefs sets this incompat flag before starting the resize and clears it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * at the end. This flag protects users from inadvertently mounting the fs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * after an aborted run without fsck-ing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define OCFS2_FEATURE_INCOMPAT_RESIZE_INPROG 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Used to denote a non-clustered volume */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT 0x0008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Support for sparse allocation in b-trees */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC 0x0010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Tunefs sets this incompat flag before starting an operation which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * would require cleanup on abort. This is done to protect users from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * inadvertently mounting the fs after an aborted run without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * fsck-ing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * s_tunefs_flags on the super block describes precisely which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * operations were in progress.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define OCFS2_FEATURE_INCOMPAT_TUNEFS_INPROG 0x0020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* Support for data packed into inode blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define OCFS2_FEATURE_INCOMPAT_INLINE_DATA 0x0040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * Support for alternate, userspace cluster stacks. If set, the superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * field s_cluster_info contains a tag for the alternate stack in use as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * well as the name of the cluster being joined.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * mount.ocfs2 must pass in a matching stack name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * If not set, the classic stack will be used. This is compatbile with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * all older versions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK 0x0080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) /* Support for the extended slot map */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Support for extended attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define OCFS2_FEATURE_INCOMPAT_XATTR 0x0200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /* Support for indexed directores */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS 0x0400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* Metadata checksum and error correction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define OCFS2_FEATURE_INCOMPAT_META_ECC 0x0800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* Refcount tree support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) /* Discontiguous block groups */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG 0x2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * Incompat bit to indicate useable clusterinfo with stackflags for all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * cluster stacks (userspace adnd o2cb). If this bit is set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * INCOMPAT_USERSPACE_STACK becomes superfluous and thus should not be set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define OCFS2_FEATURE_INCOMPAT_CLUSTERINFO 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * Append Direct IO support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define OCFS2_FEATURE_INCOMPAT_APPEND_DIO 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * backup superblock flag is used to indicate that this volume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * has backup superblocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #define OCFS2_FEATURE_COMPAT_BACKUP_SB 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * The filesystem will correctly handle journal feature bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define OCFS2_FEATURE_COMPAT_JBD2_SB 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * Unwritten extents support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #define OCFS2_FEATURE_RO_COMPAT_UNWRITTEN 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * Maintain quota information for this filesystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #define OCFS2_FEATURE_RO_COMPAT_USRQUOTA 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #define OCFS2_FEATURE_RO_COMPAT_GRPQUOTA 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /* The byte offset of the first backup block will be 1G.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * The following will be 4G, 16G, 64G, 256G and 1T.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #define OCFS2_BACKUP_SB_START 1 << 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) /* the max backup superblock nums */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) #define OCFS2_MAX_BACKUP_SUPERBLOCKS 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * Flags on ocfs2_super_block.s_tunefs_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define OCFS2_TUNEFS_INPROG_REMOVE_SLOT 0x0001 /* Removing slots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * Flags on ocfs2_dinode.i_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define OCFS2_VALID_FL (0x00000001) /* Inode is valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define OCFS2_UNUSED2_FL (0x00000002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define OCFS2_ORPHANED_FL (0x00000004) /* On the orphan list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define OCFS2_UNUSED3_FL (0x00000008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /* System inode flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #define OCFS2_SYSTEM_FL (0x00000010) /* System inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #define OCFS2_SUPER_BLOCK_FL (0x00000020) /* Super block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define OCFS2_LOCAL_ALLOC_FL (0x00000040) /* Slot local alloc bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define OCFS2_BITMAP_FL (0x00000080) /* Allocation bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define OCFS2_JOURNAL_FL (0x00000100) /* Slot local journal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) #define OCFS2_HEARTBEAT_FL (0x00000200) /* Heartbeat area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) #define OCFS2_QUOTA_FL (0x00001000) /* Quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) #define OCFS2_DIO_ORPHANED_FL (0X00002000) /* On the orphan list especially
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * for dio */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * Flags on ocfs2_dinode.i_dyn_features
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * These can change much more often than i_flags. When adding flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * keep in mind that i_dyn_features is only 16 bits wide.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #define OCFS2_INLINE_DATA_FL (0x0001) /* Data stored in inode block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #define OCFS2_HAS_XATTR_FL (0x0002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #define OCFS2_INLINE_XATTR_FL (0x0004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #define OCFS2_INDEXED_DIR_FL (0x0008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #define OCFS2_HAS_REFCOUNT_FL (0x0010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /* Inode attributes, keep in sync with EXT2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #define OCFS2_SECRM_FL FS_SECRM_FL /* Secure deletion */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define OCFS2_UNRM_FL FS_UNRM_FL /* Undelete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #define OCFS2_COMPR_FL FS_COMPR_FL /* Compress file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #define OCFS2_SYNC_FL FS_SYNC_FL /* Synchronous updates */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #define OCFS2_IMMUTABLE_FL FS_IMMUTABLE_FL /* Immutable file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define OCFS2_APPEND_FL FS_APPEND_FL /* writes to file may only append */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #define OCFS2_NODUMP_FL FS_NODUMP_FL /* do not dump file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) #define OCFS2_NOATIME_FL FS_NOATIME_FL /* do not update atime */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /* Reserved for compression usage... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define OCFS2_DIRTY_FL FS_DIRTY_FL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #define OCFS2_COMPRBLK_FL FS_COMPRBLK_FL /* One or more compressed clusters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) #define OCFS2_NOCOMP_FL FS_NOCOMP_FL /* Don't compress */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #define OCFS2_ECOMPR_FL FS_ECOMPR_FL /* Compression error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /* End compression flags --- maybe not all used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #define OCFS2_BTREE_FL FS_BTREE_FL /* btree format dir */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #define OCFS2_INDEX_FL FS_INDEX_FL /* hash-indexed directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) #define OCFS2_IMAGIC_FL FS_IMAGIC_FL /* AFS directory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) #define OCFS2_JOURNAL_DATA_FL FS_JOURNAL_DATA_FL /* Reserved for ext3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #define OCFS2_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #define OCFS2_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #define OCFS2_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #define OCFS2_RESERVED_FL FS_RESERVED_FL /* reserved for ext2 lib */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #define OCFS2_FL_VISIBLE FS_FL_USER_VISIBLE /* User visible flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) #define OCFS2_FL_MODIFIABLE FS_FL_USER_MODIFIABLE /* User modifiable flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * Extent record flags (e_node.leaf.flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define OCFS2_EXT_UNWRITTEN (0x01) /* Extent is allocated but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * unwritten */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define OCFS2_EXT_REFCOUNTED (0x02) /* Extent is reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * counted in an associated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * refcount tree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) #define OCFS2_JOURNAL_DIRTY_FL (0x00000001) /* Journal needs recovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * superblock s_state flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) #define OCFS2_ERROR_FS (0x00000001) /* FS saw errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Limit of space in ocfs2_dir_entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #define OCFS2_MAX_FILENAME_LEN 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /* Maximum slots on an ocfs2 file system */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) #define OCFS2_MAX_SLOTS 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /* Slot map indicator for an empty slot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) #define OCFS2_INVALID_SLOT ((u16)-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) #define OCFS2_VOL_UUID_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #define OCFS2_MAX_VOL_LABEL_LEN 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /* The cluster stack fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #define OCFS2_STACK_LABEL_LEN 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) #define OCFS2_CLUSTER_NAME_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /* Classic (historically speaking) cluster stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #define OCFS2_CLASSIC_CLUSTER_STACK "o2cb"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) /* Journal limits (in bytes) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #define OCFS2_MIN_JOURNAL_SIZE (4 * 1024 * 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * Inline extended attribute size (in bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * The value chosen should be aligned to 16 byte boundaries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) #define OCFS2_MIN_XATTR_INLINE_SIZE 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * Cluster info flags (ocfs2_cluster_info.ci_stackflags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) #define OCFS2_CLUSTER_O2CB_GLOBAL_HEARTBEAT (0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct ocfs2_system_inode_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) char *si_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int si_iflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int si_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /* System file index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) BAD_BLOCK_SYSTEM_INODE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) GLOBAL_INODE_ALLOC_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) #define OCFS2_FIRST_ONLINE_SYSTEM_INODE GLOBAL_INODE_ALLOC_SYSTEM_INODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) SLOT_MAP_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) HEARTBEAT_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) GLOBAL_BITMAP_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) USER_QUOTA_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) GROUP_QUOTA_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #define OCFS2_LAST_GLOBAL_SYSTEM_INODE GROUP_QUOTA_SYSTEM_INODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) #define OCFS2_FIRST_LOCAL_SYSTEM_INODE ORPHAN_DIR_SYSTEM_INODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) ORPHAN_DIR_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) EXTENT_ALLOC_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) INODE_ALLOC_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) JOURNAL_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) LOCAL_ALLOC_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) TRUNCATE_LOG_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) LOCAL_USER_QUOTA_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) LOCAL_GROUP_QUOTA_SYSTEM_INODE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) #define OCFS2_LAST_LOCAL_SYSTEM_INODE LOCAL_GROUP_QUOTA_SYSTEM_INODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) NUM_SYSTEM_INODES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) #define NUM_GLOBAL_SYSTEM_INODES OCFS2_FIRST_LOCAL_SYSTEM_INODE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #define NUM_LOCAL_SYSTEM_INODES \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) (NUM_SYSTEM_INODES - OCFS2_FIRST_LOCAL_SYSTEM_INODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* Global system inodes (single copy) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* The first two are only used from userspace mfks/tunefs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) [BAD_BLOCK_SYSTEM_INODE] = { "bad_blocks", 0, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) [GLOBAL_INODE_ALLOC_SYSTEM_INODE] = { "global_inode_alloc", OCFS2_BITMAP_FL | OCFS2_CHAIN_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /* These are used by the running filesystem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) [SLOT_MAP_SYSTEM_INODE] = { "slot_map", 0, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) [HEARTBEAT_SYSTEM_INODE] = { "heartbeat", OCFS2_HEARTBEAT_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) [GLOBAL_BITMAP_SYSTEM_INODE] = { "global_bitmap", 0, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) [USER_QUOTA_SYSTEM_INODE] = { "aquota.user", OCFS2_QUOTA_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) [GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group", OCFS2_QUOTA_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* Slot-specific system inodes (one copy per slot) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) [ORPHAN_DIR_SYSTEM_INODE] = { "orphan_dir:%04d", 0, S_IFDIR | 0755 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) [EXTENT_ALLOC_SYSTEM_INODE] = { "extent_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_CHAIN_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) [INODE_ALLOC_SYSTEM_INODE] = { "inode_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_CHAIN_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) [JOURNAL_SYSTEM_INODE] = { "journal:%04d", OCFS2_JOURNAL_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) [LOCAL_ALLOC_SYSTEM_INODE] = { "local_alloc:%04d", OCFS2_BITMAP_FL | OCFS2_LOCAL_ALLOC_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) [TRUNCATE_LOG_SYSTEM_INODE] = { "truncate_log:%04d", OCFS2_DEALLOC_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) [LOCAL_USER_QUOTA_SYSTEM_INODE] = { "aquota.user:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) [LOCAL_GROUP_QUOTA_SYSTEM_INODE] = { "aquota.group:%04d", OCFS2_QUOTA_FL, S_IFREG | 0644 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /* Parameter passed from mount.ocfs2 to module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) #define OCFS2_HB_NONE "heartbeat=none"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) #define OCFS2_HB_LOCAL "heartbeat=local"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) #define OCFS2_HB_GLOBAL "heartbeat=global"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * OCFS2_DIR_PAD defines the directory entries boundaries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * NOTE: It must be a multiple of 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #define OCFS2_DIR_PAD 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) #define OCFS2_DIR_ROUND (OCFS2_DIR_PAD - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #define OCFS2_DIR_MEMBER_LEN offsetof(struct ocfs2_dir_entry, name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) #define OCFS2_DIR_REC_LEN(name_len) (((name_len) + OCFS2_DIR_MEMBER_LEN + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) OCFS2_DIR_ROUND) & \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ~OCFS2_DIR_ROUND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #define OCFS2_DIR_MIN_REC_LEN OCFS2_DIR_REC_LEN(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) #define OCFS2_LINK_MAX 32000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) #define OCFS2_DX_LINK_MAX ((1U << 31) - 1U)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) #define OCFS2_LINKS_HI_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) #define OCFS2_DX_ENTRIES_MAX (0xffffffffU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * Convenience casts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) #define OCFS2_RAW_SB(dinode) (&((dinode)->id2.i_super))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * Block checking structure. This is used in metadata to validate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * contents. If OCFS2_FEATURE_INCOMPAT_META_ECC is not set, it is all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * zeros.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct ocfs2_block_check {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /*00*/ __le32 bc_crc32e; /* 802.3 Ethernet II CRC32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) __le16 bc_ecc; /* Single-error-correction parity vector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) This is a simple Hamming code dependent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) on the blocksize. OCFS2's maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) blocksize, 4K, requires 16 parity bits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) so we fit in __le16. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) __le16 bc_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) /*08*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * On disk extent record for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * It describes a range of clusters on disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) * Length fields are divided into interior and leaf node versions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * This leaves room for a flags field (OCFS2_EXT_*) in the leaf nodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct ocfs2_extent_rec {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /*00*/ __le32 e_cpos; /* Offset into the file, in clusters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) __le32 e_int_clusters; /* Clusters covered by all children */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) __le16 e_leaf_clusters; /* Clusters covered by this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) __u8 e_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) __u8 e_flags; /* Extent flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) __le64 e_blkno; /* Physical disk offset, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) /*10*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct ocfs2_chain_rec {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) __le32 c_free; /* Number of free bits in this chain. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) __le32 c_total; /* Number of total bits in this chain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) __le64 c_blkno; /* Physical disk offset (blocks) of 1st group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) struct ocfs2_truncate_rec {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) __le32 t_start; /* 1st cluster in this log */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) __le32 t_clusters; /* Number of total clusters covered */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) * On disk extent list for OCFS2 (node in the tree). Note that this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * is contained inside ocfs2_dinode or ocfs2_extent_block, so the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) * offsets are relative to ocfs2_dinode.id2.i_list or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * ocfs2_extent_block.h_list, respectively.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct ocfs2_extent_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) /*00*/ __le16 l_tree_depth; /* Extent tree depth from this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) point. 0 means data extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) hang directly off this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) header (a leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) NOTE: The high 8 bits cannot be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) used - tree_depth is never that big.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) __le16 l_count; /* Number of extent records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) __le16 l_next_free_rec; /* Next unused extent slot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) __le16 l_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) __le64 l_reserved2; /* Pad to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) sizeof(ocfs2_extent_rec) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /*10*/ struct ocfs2_extent_rec l_recs[]; /* Extent records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * On disk allocation chain list for OCFS2. Note that this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * contained inside ocfs2_dinode, so the offsets are relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * ocfs2_dinode.id2.i_chain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) struct ocfs2_chain_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) /*00*/ __le16 cl_cpg; /* Clusters per Block Group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) __le16 cl_bpc; /* Bits per cluster */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) __le16 cl_count; /* Total chains in this list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) __le16 cl_next_free_rec; /* Next unused chain slot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) __le64 cl_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /*10*/ struct ocfs2_chain_rec cl_recs[]; /* Chain records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * On disk deallocation log for OCFS2. Note that this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * contained inside ocfs2_dinode, so the offsets are relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * ocfs2_dinode.id2.i_dealloc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) struct ocfs2_truncate_log {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /*00*/ __le16 tl_count; /* Total records in this log */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) __le16 tl_used; /* Number of records in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) __le32 tl_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /*08*/ struct ocfs2_truncate_rec tl_recs[]; /* Truncate records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) * On disk extent block (indirect block) for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct ocfs2_extent_block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /*00*/ __u8 h_signature[8]; /* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) struct ocfs2_block_check h_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) /*10*/ __le16 h_suballoc_slot; /* Slot suballocator this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) extent_header belongs to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) __le16 h_suballoc_bit; /* Bit offset in suballocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) __le32 h_fs_generation; /* Must match super block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) __le64 h_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /*20*/ __le64 h_suballoc_loc; /* Suballocator block group this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) eb belongs to. Only valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if allocated from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) discontiguous block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) __le64 h_next_leaf_blk; /* Offset on disk, in blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) of next leaf header pointing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) to data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /*30*/ struct ocfs2_extent_list h_list; /* Extent record list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* Actual on-disk size is one block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * On disk slot map for OCFS2. This defines the contents of the "slot_map"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * system file. A slot is valid if it contains a node number >= 0. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * value -1 (0xFFFF) is OCFS2_INVALID_SLOT. This marks a slot empty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct ocfs2_slot_map {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /*00*/ __le16 sm_slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * Actual on-disk size is one block. OCFS2_MAX_SLOTS is 255,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * 255 * sizeof(__le16) == 512B, within the 512B block minimum blocksize.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct ocfs2_extended_slot {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) /*00*/ __u8 es_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) __u8 es_reserved1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) __le32 es_node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /*08*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * The extended slot map, used when OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * is set. It separates out the valid marker from the node number, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * has room to grow. Unlike the old slot map, this format is defined by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * i_size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct ocfs2_slot_map_extended {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) /*00*/ struct ocfs2_extended_slot se_slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * Actual size is i_size of the slot_map system file. It should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * match s_max_slots * sizeof(struct ocfs2_extended_slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * ci_stackflags is only valid if the incompat bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * OCFS2_FEATURE_INCOMPAT_CLUSTERINFO is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct ocfs2_cluster_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) /*00*/ __u8 ci_stack[OCFS2_STACK_LABEL_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) __le32 ci_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) __u8 ci_stackflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) __u8 ci_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) __u8 ci_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) __u8 ci_reserved3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) /*08*/ __u8 ci_cluster[OCFS2_CLUSTER_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) /*18*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) * On disk superblock for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * Note that it is contained inside an ocfs2_dinode, so all offsets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * are relative to the start of ocfs2_dinode.id2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) struct ocfs2_super_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) /*00*/ __le16 s_major_rev_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) __le16 s_minor_rev_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) __le16 s_mnt_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) __le16 s_max_mnt_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) __le16 s_state; /* File system state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) __le16 s_errors; /* Behaviour when detecting errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) __le32 s_checkinterval; /* Max time between checks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) /*10*/ __le64 s_lastcheck; /* Time of last check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) __le32 s_creator_os; /* OS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) __le32 s_feature_compat; /* Compatible feature set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) /*20*/ __le32 s_feature_incompat; /* Incompatible feature set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) __le32 s_feature_ro_compat; /* Readonly-compatible feature set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) __le64 s_root_blkno; /* Offset, in blocks, of root directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) dinode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) /*30*/ __le64 s_system_dir_blkno; /* Offset, in blocks, of system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) directory dinode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) __le32 s_blocksize_bits; /* Blocksize for this fs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) __le32 s_clustersize_bits; /* Clustersize for this fs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) /*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) before tunefs required */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) __le16 s_tunefs_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) __le32 s_uuid_hash; /* hash value of uuid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) __le64 s_first_cluster_group; /* Block offset of 1st cluster
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * group header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /*50*/ __u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) /*90*/ __u8 s_uuid[OCFS2_VOL_UUID_LEN]; /* 128-bit uuid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) /*A0*/ struct ocfs2_cluster_info s_cluster_info; /* Only valid if either
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) userspace or clusterinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) INCOMPAT flag set. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /*B8*/ __le16 s_xattr_inline_size; /* extended attribute inline size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) for this fs*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) __le16 s_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) __le32 s_dx_seed[3]; /* seed[0-2] for dx dir hash.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * s_uuid_hash serves as seed[3]. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) /*C0*/ __le64 s_reserved2[15]; /* Fill out superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) /*140*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * NOTE: As stated above, all offsets are relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * ocfs2_dinode.id2, which is at 0xC0 in the inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * 0xC0 + 0x140 = 0x200 or 512 bytes. A superblock must fit within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * our smallest blocksize, which is 512 bytes. To ensure this,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) * we reserve the space in s_reserved2. Anything past s_reserved2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * will not be available on the smallest blocksize.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * Local allocation bitmap for OCFS2 slots
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * Note that it exists inside an ocfs2_dinode, so all offsets are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * relative to the start of ocfs2_dinode.id2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct ocfs2_local_alloc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) /*00*/ __le32 la_bm_off; /* Starting bit offset in main bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) __le16 la_size; /* Size of included bitmap, in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) __le16 la_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) __le64 la_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) /*10*/ __u8 la_bitmap[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * Data-in-inode header. This is only used if i_dyn_features has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * OCFS2_INLINE_DATA_FL set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct ocfs2_inline_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /*00*/ __le16 id_count; /* Number of bytes that can be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * for data, starting at id_data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) __le16 id_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) __le32 id_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) __u8 id_data[]; /* Start of user data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * On disk inode for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) struct ocfs2_dinode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /*00*/ __u8 i_signature[8]; /* Signature for validation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) __le32 i_generation; /* Generation number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) __le16 i_suballoc_slot; /* Slot suballocator this inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) belongs to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) __le16 i_suballoc_bit; /* Bit offset in suballocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /*10*/ __le16 i_links_count_hi; /* High 16 bits of links count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) __le16 i_xattr_inline_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) __le32 i_clusters; /* Cluster count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) __le32 i_uid; /* Owner UID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) __le32 i_gid; /* Owning GID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /*20*/ __le64 i_size; /* Size in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) __le16 i_mode; /* File mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) __le16 i_links_count; /* Links count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) __le32 i_flags; /* File flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /*30*/ __le64 i_atime; /* Access time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) __le64 i_ctime; /* Creation time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /*40*/ __le64 i_mtime; /* Modification time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) __le64 i_dtime; /* Deletion time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) /*50*/ __le64 i_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) __le64 i_last_eb_blk; /* Pointer to last extent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /*60*/ __le32 i_fs_generation; /* Generation per fs-instance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) __le32 i_atime_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) __le32 i_ctime_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) __le32 i_mtime_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) /*70*/ __le32 i_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) __le16 i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) was set in i_flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) __le16 i_dyn_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) __le64 i_xattr_loc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) /*80*/ struct ocfs2_block_check i_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) /*88*/ __le64 i_dx_root; /* Pointer to dir index root block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) /*90*/ __le64 i_refcount_loc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) __le64 i_suballoc_loc; /* Suballocator block group this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) inode belongs to. Only valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if allocated from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) discontiguous block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) /*A0*/ __le16 i_dio_orphaned_slot; /* only used for append dio write */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) __le16 i_reserved1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) __le64 i_reserved2[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) /*B8*/ union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) __le64 i_pad1; /* Generic way to refer to this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) 64bit union */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) __le64 i_rdev; /* Device number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) } dev1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) struct { /* Info for bitmap system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) __le32 i_used; /* Bits (ie, clusters) used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) __le32 i_total; /* Total bits (clusters)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) } bitmap1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) struct { /* Info for journal system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) __le32 ij_flags; /* Mounted, version, etc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) __le32 ij_recovery_generation; /* Incremented when the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) journal is recovered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) after an unclean
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) shutdown */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) } journal1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) } id1; /* Inode type dependent 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) /*C0*/ union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) struct ocfs2_super_block i_super;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) struct ocfs2_local_alloc i_lab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) struct ocfs2_chain_list i_chain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) struct ocfs2_extent_list i_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) struct ocfs2_truncate_log i_dealloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) struct ocfs2_inline_data i_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) __u8 i_symlink[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) } id2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /* Actual on-disk size is one block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) * On-disk directory entry structure for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) * Packed as this structure could be accessed unaligned on 64-bit platforms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct ocfs2_dir_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) /*00*/ __le64 inode; /* Inode number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) __le16 rec_len; /* Directory entry length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) __u8 name_len; /* Name length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) __u8 file_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) /*0C*/ char name[OCFS2_MAX_FILENAME_LEN]; /* File name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /* Actual on-disk length specified by rec_len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) } __attribute__ ((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) * Per-block record for the unindexed directory btree. This is carefully
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) * crafted so that the rec_len and name_len records of an ocfs2_dir_entry are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * mirrored. That way, the directory manipulation code needs a minimal amount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) * of update.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) * NOTE: Keep this structure aligned to a multiple of 4 bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) struct ocfs2_dir_block_trailer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /*00*/ __le64 db_compat_inode; /* Always zero. Was inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) __le16 db_compat_rec_len; /* Backwards compatible with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * ocfs2_dir_entry. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) __u8 db_compat_name_len; /* Always zero. Was name_len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) __u8 db_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) __le16 db_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) __le16 db_free_rec_len; /* Size of largest empty hole
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * in this block. (unused) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) /*10*/ __u8 db_signature[8]; /* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) __le64 db_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) /*20*/ __le64 db_free_next; /* Next block in list (unused) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) __le64 db_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) /*30*/ __le64 db_parent_dinode; /* dinode which owns me, in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) struct ocfs2_block_check db_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) /*40*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * A directory entry in the indexed tree. We don't store the full name here,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * but instead provide a pointer to the full dirent in the unindexed tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) * We also store name_len here so as to reduce the number of leaf blocks we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) * need to search in case of collisions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) struct ocfs2_dx_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) __le32 dx_major_hash; /* Used to find logical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * cluster in index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) __le32 dx_minor_hash; /* Lower bits used to find
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * block in cluster */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) __le64 dx_dirent_blk; /* Physical block in unindexed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * tree holding this dirent. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) struct ocfs2_dx_entry_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) __le32 de_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) __le16 de_count; /* Maximum number of entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * possible in de_entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) __le16 de_num_used; /* Current number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) * de_entries entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct ocfs2_dx_entry de_entries[]; /* Indexed dir entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) * in a packed array of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) * length de_num_used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) #define OCFS2_DX_FLAG_INLINE 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * A directory indexing block. Each indexed directory has one of these,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * pointed to by ocfs2_dinode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * This block stores an indexed btree root, and a set of free space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * start-of-list pointers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct ocfs2_dx_root_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) __u8 dr_signature[8]; /* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) struct ocfs2_block_check dr_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) __le16 dr_suballoc_slot; /* Slot suballocator this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * block belongs to. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) __le16 dr_suballoc_bit; /* Bit offset in suballocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) __le32 dr_fs_generation; /* Must match super block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) __le64 dr_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) __le64 dr_last_eb_blk; /* Pointer to last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * extent block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) __le32 dr_clusters; /* Clusters allocated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * to the indexed tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) __u8 dr_flags; /* OCFS2_DX_FLAG_* flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) __u8 dr_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) __le16 dr_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) __le64 dr_dir_blkno; /* Pointer to parent inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) __le32 dr_num_entries; /* Total number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * names stored in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * this directory.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) __le32 dr_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) __le64 dr_free_blk; /* Pointer to head of free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * unindexed block list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) __le64 dr_suballoc_loc; /* Suballocator block group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) this root belongs to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) Only valid if allocated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) from a discontiguous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) __le64 dr_reserved3[14];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) struct ocfs2_extent_list dr_list; /* Keep this aligned to 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * bits for maximum space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * efficiency. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) struct ocfs2_dx_entry_list dr_entries; /* In-root-block list of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * entries. We grow out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) * to extents if this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * gets too big. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) * The header of a leaf block in the indexed tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) struct ocfs2_dx_leaf {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) __u8 dl_signature[8];/* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) struct ocfs2_block_check dl_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) __le64 dl_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) __le32 dl_fs_generation;/* Must match super block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) __le32 dl_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) __le64 dl_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) struct ocfs2_dx_entry_list dl_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * Largest bitmap for a block (suballocator) group in bytes. This limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) * does not affect cluster groups (global allocator). Cluster group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * bitmaps run to the end of the block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) #define OCFS2_MAX_BG_BITMAP_SIZE 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) * On disk allocator group structure for OCFS2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) struct ocfs2_group_desc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) /*00*/ __u8 bg_signature[8]; /* Signature for validation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) __le16 bg_size; /* Size of included bitmap in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) bytes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) __le16 bg_bits; /* Bits represented by this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) group. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) __le16 bg_free_bits_count; /* Free bits count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) __le16 bg_chain; /* What chain I am in. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) /*10*/ __le32 bg_generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) __le32 bg_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) __le64 bg_next_group; /* Next group in my list, in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) /*20*/ __le64 bg_parent_dinode; /* dinode which owns me, in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) __le64 bg_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) /*30*/ struct ocfs2_block_check bg_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) __le64 bg_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) /*40*/ union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) __u8 bg_bitmap[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * Block groups may be discontiguous when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) * The extents of a discontiguous block group are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) * stored in bg_list. It is a flat list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) * l_tree_depth must always be zero. A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) * discontiguous group is signified by a non-zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) * bg_list->l_next_free_rec. Only block groups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * can be discontiguous; Cluster groups cannot.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) * We've never made a block group with more than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) * 2048 blocks (256 bytes of bg_bitmap). This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) * codifies that limit so that we can fit bg_list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) * bg_size of a discontiguous block group will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) * be 256 to match bg_bitmap_filler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) __u8 bg_bitmap_filler[OCFS2_MAX_BG_BITMAP_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) /*140*/ struct ocfs2_extent_list bg_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) /* Actual on-disk size is one block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) struct ocfs2_refcount_rec {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) /*00*/ __le64 r_cpos; /* Physical offset, in clusters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) __le32 r_clusters; /* Clusters covered by this extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) __le32 r_refcount; /* Reference count of this extent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) /*10*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) #define OCFS2_32BIT_POS_MASK (0xffffffffULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) #define OCFS2_REFCOUNT_LEAF_FL (0x00000001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) #define OCFS2_REFCOUNT_TREE_FL (0x00000002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) struct ocfs2_refcount_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) /*00*/ __le16 rl_count; /* Maximum number of entries possible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) in rl_records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) __le16 rl_used; /* Current number of used records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) __le32 rl_reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) __le64 rl_reserved1; /* Pad to sizeof(ocfs2_refcount_record) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) /*10*/ struct ocfs2_refcount_rec rl_recs[]; /* Refcount records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) struct ocfs2_refcount_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) /*00*/ __u8 rf_signature[8]; /* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) __le16 rf_suballoc_slot; /* Slot suballocator this block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) belongs to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) __le16 rf_suballoc_bit; /* Bit offset in suballocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) __le32 rf_fs_generation; /* Must match superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) /*10*/ __le64 rf_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) __le64 rf_parent; /* Parent block, only valid if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) OCFS2_REFCOUNT_LEAF_FL is set in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) rf_flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) /*20*/ struct ocfs2_block_check rf_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) __le64 rf_last_eb_blk; /* Pointer to last extent block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) /*30*/ __le32 rf_count; /* Number of inodes sharing this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) refcount tree */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) __le32 rf_flags; /* See the flags above */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) __le32 rf_clusters; /* clusters covered by refcount tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) __le32 rf_cpos; /* cluster offset in refcount tree.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) /*40*/ __le32 rf_generation; /* generation number. all be the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) * for the same refcount tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) __le32 rf_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) __le64 rf_suballoc_loc; /* Suballocator block group this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) refcount block belongs to. Only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) valid if allocated from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) discontiguous block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) /*50*/ __le64 rf_reserved1[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) /*80*/ union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) struct ocfs2_refcount_list rf_records; /* List of refcount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) records */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) struct ocfs2_extent_list rf_list; /* Extent record list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) only valid if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) OCFS2_REFCOUNT_TREE_FL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) is set in rf_flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) /* Actual on-disk size is one block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) * On disk extended attribute structure for OCFS2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) * ocfs2_xattr_entry indicates one extend attribute.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * Note that it can be stored in inode, one block or one xattr bucket.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) struct ocfs2_xattr_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) __le32 xe_name_hash; /* hash value of xattr prefix+suffix. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) __le16 xe_name_offset; /* byte offset from the 1st entry in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) local xattr storage(inode, xattr block or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) xattr bucket). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) __u8 xe_name_len; /* xattr name len, doesn't include prefix. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) __u8 xe_type; /* the low 7 bits indicate the name prefix
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) * type and the highest bit indicates whether
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) * the EA is stored in the local storage. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) __le64 xe_value_size; /* real xattr value length. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) * On disk structure for xattr header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) * One ocfs2_xattr_header describes how many ocfs2_xattr_entry records in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) * the local xattr storage.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) struct ocfs2_xattr_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) __le16 xh_count; /* contains the count of how
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) many records are in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) local xattr storage. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) __le16 xh_free_start; /* current offset for storing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) xattr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) __le16 xh_name_value_len; /* total length of name/value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) length in this bucket. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) __le16 xh_num_buckets; /* Number of xattr buckets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) in this extent record,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) only valid in the first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) bucket. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) struct ocfs2_block_check xh_check; /* Error checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) (Note, this is only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) used for xattr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) buckets. A block uses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) xb_check and sets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) this field to zero.) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) struct ocfs2_xattr_entry xh_entries[]; /* xattr entry list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) * On disk structure for xattr value root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) * When an xattr's value is large enough, it is stored in an external
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) * b-tree like file data. The xattr value root points to this structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) struct ocfs2_xattr_value_root {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) /*00*/ __le32 xr_clusters; /* clusters covered by xattr value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) __le32 xr_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) __le64 xr_last_eb_blk; /* Pointer to last extent block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) /*10*/ struct ocfs2_extent_list xr_list; /* Extent record list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) * On disk structure for xattr tree root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) * It is used when there are too many extended attributes for one file. These
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) * attributes will be organized and stored in an indexed-btree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) struct ocfs2_xattr_tree_root {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) /*00*/ __le32 xt_clusters; /* clusters covered by xattr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) __le32 xt_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) __le64 xt_last_eb_blk; /* Pointer to last extent block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) /*10*/ struct ocfs2_extent_list xt_list; /* Extent record list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) #define OCFS2_XATTR_INDEXED 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) #define OCFS2_HASH_SHIFT 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) #define OCFS2_XATTR_ROUND 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) #define OCFS2_XATTR_SIZE(size) (((size) + OCFS2_XATTR_ROUND) & \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) ~(OCFS2_XATTR_ROUND))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) #define OCFS2_XATTR_BUCKET_SIZE 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) #define OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET (OCFS2_XATTR_BUCKET_SIZE \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) / OCFS2_MIN_BLOCKSIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) * On disk structure for xattr block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) struct ocfs2_xattr_block {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) /*00*/ __u8 xb_signature[8]; /* Signature for verification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) __le16 xb_suballoc_slot; /* Slot suballocator this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) block belongs to. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) __le16 xb_suballoc_bit; /* Bit offset in suballocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) __le32 xb_fs_generation; /* Must match super block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) /*10*/ __le64 xb_blkno; /* Offset on disk, in blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) struct ocfs2_block_check xb_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) /*20*/ __le16 xb_flags; /* Indicates whether this block contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) real xattr or a xattr tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) __le16 xb_reserved0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) __le32 xb_reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) __le64 xb_suballoc_loc; /* Suballocator block group this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) xattr block belongs to. Only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) valid if allocated from a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) discontiguous block group */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) /*30*/ union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) struct ocfs2_xattr_header xb_header; /* xattr header if this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) block contains xattr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) struct ocfs2_xattr_tree_root xb_root;/* xattr tree root if this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) block cotains xattr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) } xb_attrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) #define OCFS2_XATTR_ENTRY_LOCAL 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) #define OCFS2_XATTR_TYPE_MASK 0x7F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) static inline void ocfs2_xattr_set_local(struct ocfs2_xattr_entry *xe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) int local)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) if (local)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) xe->xe_type |= OCFS2_XATTR_ENTRY_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) xe->xe_type &= ~OCFS2_XATTR_ENTRY_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) static inline int ocfs2_xattr_is_local(struct ocfs2_xattr_entry *xe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) return xe->xe_type & OCFS2_XATTR_ENTRY_LOCAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) static inline void ocfs2_xattr_set_type(struct ocfs2_xattr_entry *xe, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) xe->xe_type |= type & OCFS2_XATTR_TYPE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) static inline int ocfs2_xattr_get_type(struct ocfs2_xattr_entry *xe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) return xe->xe_type & OCFS2_XATTR_TYPE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) * On disk structures for global quota file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) /* Magic numbers and known versions for global quota files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) #define OCFS2_GLOBAL_QMAGICS {\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) 0x0cf52470, /* USRQUOTA */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) 0x0cf52471 /* GRPQUOTA */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) #define OCFS2_GLOBAL_QVERSIONS {\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) /* Each block of each quota file has a certain fixed number of bytes reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) * for OCFS2 internal use at its end. OCFS2 can use it for things like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) * checksums, etc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) #define OCFS2_QBLK_RESERVED_SPACE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) /* Generic header of all quota files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) struct ocfs2_disk_dqheader {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) __le32 dqh_magic; /* Magic number identifying file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) __le32 dqh_version; /* Quota format version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) #define OCFS2_GLOBAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) /* Information header of global quota file (immediately follows the generic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) * header) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) struct ocfs2_global_disk_dqinfo {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) /*00*/ __le32 dqi_bgrace; /* Grace time for space softlimit excess */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) __le32 dqi_igrace; /* Grace time for inode softlimit excess */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) __le32 dqi_syncms; /* Time after which we sync local changes to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) * global quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) __le32 dqi_blocks; /* Number of blocks in quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) /*10*/ __le32 dqi_free_blk; /* First free block in quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) __le32 dqi_free_entry; /* First block with free dquot entry in quota
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) * file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) /* Structure with global user / group information. We reserve some space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) * for future use. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) struct ocfs2_global_disk_dqblk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) /*00*/ __le32 dqb_id; /* ID the structure belongs to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) __le32 dqb_use_count; /* Number of nodes having reference to this structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) __le64 dqb_ihardlimit; /* absolute limit on allocated inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) /*10*/ __le64 dqb_isoftlimit; /* preferred inode limit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) __le64 dqb_curinodes; /* current # allocated inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) /*20*/ __le64 dqb_bhardlimit; /* absolute limit on disk space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) __le64 dqb_bsoftlimit; /* preferred limit on disk space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) /*30*/ __le64 dqb_curspace; /* current space occupied */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) __le64 dqb_btime; /* time limit for excessive disk use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) /*40*/ __le64 dqb_itime; /* time limit for excessive inode use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) __le64 dqb_pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) /*50*/ __le64 dqb_pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) * On-disk structures for local quota file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) /* Magic numbers and known versions for local quota files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) #define OCFS2_LOCAL_QMAGICS {\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) 0x0cf524c0, /* USRQUOTA */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) 0x0cf524c1 /* GRPQUOTA */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) #define OCFS2_LOCAL_QVERSIONS {\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) 0, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) /* Quota flags in dqinfo header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) #define OLQF_CLEAN 0x0001 /* Quota file is empty (this should be after\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) * quota has been cleanly turned off) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) #define OCFS2_LOCAL_INFO_OFF (sizeof(struct ocfs2_disk_dqheader))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) /* Information header of local quota file (immediately follows the generic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) * header) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) struct ocfs2_local_disk_dqinfo {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) __le32 dqi_flags; /* Flags for quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) __le32 dqi_chunks; /* Number of chunks of quota structures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) * with a bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) __le32 dqi_blocks; /* Number of blocks allocated for quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) /* Header of one chunk of a quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) struct ocfs2_local_disk_chunk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) __le32 dqc_free; /* Number of free entries in the bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) __u8 dqc_bitmap[]; /* Bitmap of entries in the corresponding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * chunk of quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) /* One entry in local quota file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) struct ocfs2_local_disk_dqblk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) /*00*/ __le64 dqb_id; /* id this quota applies to */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) __le64 dqb_spacemod; /* Change in the amount of used space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) /*10*/ __le64 dqb_inodemod; /* Change in the amount of used inodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) * The quota trailer lives at the end of each quota block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) struct ocfs2_disk_dqtrailer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) /*00*/ struct ocfs2_block_check dq_check; /* Error checking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) /*08*/ /* Cannot be larger than OCFS2_QBLK_RESERVED_SPACE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) static inline struct ocfs2_disk_dqtrailer *ocfs2_block_dqtrailer(int blocksize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) void *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) char *ptr = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) ptr += blocksize - OCFS2_QBLK_RESERVED_SPACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) return (struct ocfs2_disk_dqtrailer *)ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) #ifdef __KERNEL__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) static inline int ocfs2_fast_symlink_chars(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) return sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) offsetof(struct ocfs2_dinode, id2.i_symlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) static inline int ocfs2_max_inline_data_with_xattr(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) struct ocfs2_dinode *di)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) return sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) offsetof(struct ocfs2_dinode, id2.i_data.id_data) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) xattrsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) return sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) offsetof(struct ocfs2_dinode, id2.i_data.id_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) static inline int ocfs2_extent_recs_per_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) offsetof(struct ocfs2_dinode, id2.i_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) static inline int ocfs2_extent_recs_per_inode_with_xattr(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) struct ocfs2_dinode *di)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) unsigned int xattrsize = le16_to_cpu(di->i_xattr_inline_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) if (le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_XATTR_FL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) offsetof(struct ocfs2_dinode, id2.i_list.l_recs) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) xattrsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) offsetof(struct ocfs2_dinode, id2.i_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) static inline int ocfs2_extent_recs_per_dx_root(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) offsetof(struct ocfs2_dx_root_block, dr_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) static inline int ocfs2_chain_recs_per_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) offsetof(struct ocfs2_dinode, id2.i_chain.cl_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) return size / sizeof(struct ocfs2_chain_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) static inline u16 ocfs2_extent_recs_per_eb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) offsetof(struct ocfs2_extent_block, h_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) static inline u16 ocfs2_extent_recs_per_gd(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) offsetof(struct ocfs2_group_desc, bg_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) static inline int ocfs2_dx_entries_per_leaf(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) offsetof(struct ocfs2_dx_leaf, dl_list.de_entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) return size / sizeof(struct ocfs2_dx_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) static inline int ocfs2_dx_entries_per_root(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) offsetof(struct ocfs2_dx_root_block, dr_entries.de_entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) return size / sizeof(struct ocfs2_dx_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) static inline u16 ocfs2_local_alloc_size(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) u16 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) offsetof(struct ocfs2_dinode, id2.i_lab.la_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) static inline int ocfs2_group_bitmap_size(struct super_block *sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) int suballocator,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) u32 feature_incompat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) int size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) offsetof(struct ocfs2_group_desc, bg_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * The cluster allocator uses the entire block. Suballocators have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) * never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * code expects bg_size set to the maximum. Thus we must keep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) * bg_size as-is unless discontig_bg is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) if (suballocator &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) (feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) size = OCFS2_MAX_BG_BITMAP_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) static inline int ocfs2_truncate_recs_per_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) offsetof(struct ocfs2_dinode, id2.i_dealloc.tl_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) return size / sizeof(struct ocfs2_truncate_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) static inline u64 ocfs2_backup_super_blkno(struct super_block *sb, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) u64 offset = OCFS2_BACKUP_SB_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) if (index >= 0 && index < OCFS2_MAX_BACKUP_SUPERBLOCKS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) offset <<= (2 * index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) offset >>= sb->s_blocksize_bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) return offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) static inline u16 ocfs2_xattr_recs_per_xb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) offsetof(struct ocfs2_xattr_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) xb_attrs.xb_root.xt_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) static inline u16 ocfs2_extent_recs_per_rb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) offsetof(struct ocfs2_refcount_block, rf_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) static inline u16 ocfs2_refcount_recs_per_rb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) offsetof(struct ocfs2_refcount_block, rf_records.rl_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) return size / sizeof(struct ocfs2_refcount_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) static inline u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) ocfs2_get_ref_rec_low_cpos(const struct ocfs2_refcount_rec *rec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) return le64_to_cpu(rec->r_cpos) & OCFS2_32BIT_POS_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) static inline int ocfs2_fast_symlink_chars(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) return blocksize - offsetof(struct ocfs2_dinode, id2.i_symlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) static inline int ocfs2_max_inline_data_with_xattr(int blocksize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) struct ocfs2_dinode *di)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) if (di && (di->i_dyn_features & OCFS2_INLINE_XATTR_FL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) return blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) offsetof(struct ocfs2_dinode, id2.i_data.id_data) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) di->i_xattr_inline_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) return blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) offsetof(struct ocfs2_dinode, id2.i_data.id_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) static inline int ocfs2_extent_recs_per_inode(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) offsetof(struct ocfs2_dinode, id2.i_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) static inline int ocfs2_chain_recs_per_inode(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) offsetof(struct ocfs2_dinode, id2.i_chain.cl_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) return size / sizeof(struct ocfs2_chain_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) static inline int ocfs2_extent_recs_per_eb(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) offsetof(struct ocfs2_extent_block, h_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) static inline int ocfs2_extent_recs_per_gd(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) offsetof(struct ocfs2_group_desc, bg_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) static inline int ocfs2_local_alloc_size(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) offsetof(struct ocfs2_dinode, id2.i_lab.la_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) static inline int ocfs2_group_bitmap_size(int blocksize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) int suballocator,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) uint32_t feature_incompat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) int size = sb->s_blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) offsetof(struct ocfs2_group_desc, bg_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) * The cluster allocator uses the entire block. Suballocators have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) * never used more than OCFS2_MAX_BG_BITMAP_SIZE. Unfortunately, older
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) * code expects bg_size set to the maximum. Thus we must keep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) * bg_size as-is unless discontig_bg is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) if (suballocator &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) (feature_incompat & OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) size = OCFS2_MAX_BG_BITMAP_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) static inline int ocfs2_truncate_recs_per_inode(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) offsetof(struct ocfs2_dinode, id2.i_dealloc.tl_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) return size / sizeof(struct ocfs2_truncate_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) static inline uint64_t ocfs2_backup_super_blkno(int blocksize, int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) uint64_t offset = OCFS2_BACKUP_SB_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) if (index >= 0 && index < OCFS2_MAX_BACKUP_SUPERBLOCKS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) offset <<= (2 * index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) offset /= blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) return offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) static inline int ocfs2_xattr_recs_per_xb(int blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) size = blocksize -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) offsetof(struct ocfs2_xattr_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) xb_attrs.xb_root.xt_list.l_recs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) return size / sizeof(struct ocfs2_extent_rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) #endif /* __KERNEL__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) static inline int ocfs2_system_inode_is_global(int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) return ((type >= 0) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) (type <= OCFS2_LAST_GLOBAL_SYSTEM_INODE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) static inline int ocfs2_sprintf_system_inode_name(char *buf, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) int type, int slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) int chars;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) * Global system inodes can only have one copy. Everything
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) * after OCFS2_LAST_GLOBAL_SYSTEM_INODE in the system inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) * list has a copy per slot.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) if (type <= OCFS2_LAST_GLOBAL_SYSTEM_INODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) chars = snprintf(buf, len, "%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) ocfs2_system_inodes[type].si_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) chars = snprintf(buf, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) ocfs2_system_inodes[type].si_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) return chars;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) static inline void ocfs2_set_de_type(struct ocfs2_dir_entry *de,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) umode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) de->file_type = fs_umode_to_ftype(mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) static inline int ocfs2_gd_is_discontig(struct ocfs2_group_desc *gd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) if ((offsetof(struct ocfs2_group_desc, bg_bitmap) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) le16_to_cpu(gd->bg_size)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) offsetof(struct ocfs2_group_desc, bg_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) * Only valid to check l_next_free_rec if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) * bg_bitmap + bg_size == bg_list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) if (!gd->bg_list.l_next_free_rec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) #endif /* _OCFS2_FS_H */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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