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Diffstat (limited to 'fs/ocfs2/ocfs2_fs.h')
-rw-r--r--fs/ocfs2/ocfs2_fs.h134
1 files changed, 55 insertions, 79 deletions
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 938387a10d5d..f7763da5c4a2 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -1,30 +1,17 @@
-/* -*- mode: c; c-basic-offset: 8; -*-
- * vim: noexpandtab sw=8 ts=8 sts=0:
- *
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
* ocfs2_fs.h
*
* On-disk structures for OCFS2.
*
* Copyright (C) 2002, 2004 Oracle. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License, version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
*/
#ifndef _OCFS2_FS_H
#define _OCFS2_FS_H
+#include <linux/magic.h>
+
/* Version */
#define OCFS2_MAJOR_REV_LEVEL 0
#define OCFS2_MINOR_REV_LEVEL 90
@@ -56,9 +43,6 @@
#define OCFS2_MIN_BLOCKSIZE 512
#define OCFS2_MAX_BLOCKSIZE OCFS2_MIN_CLUSTERSIZE
-/* Filesystem magic number */
-#define OCFS2_SUPER_MAGIC 0x7461636f
-
/* Object signatures */
#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
#define OCFS2_INODE_SIGNATURE "INODE01"
@@ -102,7 +86,8 @@
| OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS \
| OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE \
| OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG \
- | OCFS2_FEATURE_INCOMPAT_CLUSTERINFO)
+ | OCFS2_FEATURE_INCOMPAT_CLUSTERINFO \
+ | OCFS2_FEATURE_INCOMPAT_APPEND_DIO)
#define OCFS2_FEATURE_RO_COMPAT_SUPP (OCFS2_FEATURE_RO_COMPAT_UNWRITTEN \
| OCFS2_FEATURE_RO_COMPAT_USRQUOTA \
| OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
@@ -147,7 +132,7 @@
* well as the name of the cluster being joined.
* mount.ocfs2 must pass in a matching stack name.
*
- * If not set, the classic stack will be used. This is compatbile with
+ * If not set, the classic stack will be used. This is compatible with
* all older versions.
*/
#define OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK 0x0080
@@ -158,7 +143,7 @@
/* Support for extended attributes */
#define OCFS2_FEATURE_INCOMPAT_XATTR 0x0200
-/* Support for indexed directores */
+/* Support for indexed directories */
#define OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS 0x0400
/* Metadata checksum and error correction */
@@ -167,17 +152,22 @@
/* Refcount tree support */
#define OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE 0x1000
-/* Discontigous block groups */
+/* Discontiguous block groups */
#define OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG 0x2000
/*
- * Incompat bit to indicate useable clusterinfo with stackflags for all
+ * Incompat bit to indicate usable clusterinfo with stackflags for all
* cluster stacks (userspace adnd o2cb). If this bit is set,
* INCOMPAT_USERSPACE_STACK becomes superfluous and thus should not be set.
*/
#define OCFS2_FEATURE_INCOMPAT_CLUSTERINFO 0x4000
/*
+ * Append Direct IO support
+ */
+#define OCFS2_FEATURE_INCOMPAT_APPEND_DIO 0x8000
+
+/*
* backup superblock flag is used to indicate that this volume
* has backup superblocks.
*/
@@ -199,6 +189,7 @@
#define OCFS2_FEATURE_RO_COMPAT_USRQUOTA 0x0002
#define OCFS2_FEATURE_RO_COMPAT_GRPQUOTA 0x0004
+
/* The byte offset of the first backup block will be 1G.
* The following will be 4G, 16G, 64G, 256G and 1T.
*/
@@ -229,6 +220,8 @@
#define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */
#define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */
#define OCFS2_QUOTA_FL (0x00001000) /* Quota file */
+#define OCFS2_DIO_ORPHANED_FL (0X00002000) /* On the orphan list especially
+ * for dio */
/*
* Flags on ocfs2_dinode.i_dyn_features
@@ -295,7 +288,7 @@
#define OCFS2_MAX_SLOTS 255
/* Slot map indicator for an empty slot */
-#define OCFS2_INVALID_SLOT -1
+#define OCFS2_INVALID_SLOT ((u16)-1)
#define OCFS2_VOL_UUID_LEN 16
#define OCFS2_MAX_VOL_LABEL_LEN 64
@@ -331,8 +324,8 @@ struct ocfs2_system_inode_info {
enum {
BAD_BLOCK_SYSTEM_INODE = 0,
GLOBAL_INODE_ALLOC_SYSTEM_INODE,
+#define OCFS2_FIRST_ONLINE_SYSTEM_INODE GLOBAL_INODE_ALLOC_SYSTEM_INODE
SLOT_MAP_SYSTEM_INODE,
-#define OCFS2_FIRST_ONLINE_SYSTEM_INODE SLOT_MAP_SYSTEM_INODE
HEARTBEAT_SYSTEM_INODE,
GLOBAL_BITMAP_SYSTEM_INODE,
USER_QUOTA_SYSTEM_INODE,
@@ -384,21 +377,6 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
#define OCFS2_HB_GLOBAL "heartbeat=global"
/*
- * OCFS2 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
-#define OCFS2_FT_UNKNOWN 0
-#define OCFS2_FT_REG_FILE 1
-#define OCFS2_FT_DIR 2
-#define OCFS2_FT_CHRDEV 3
-#define OCFS2_FT_BLKDEV 4
-#define OCFS2_FT_FIFO 5
-#define OCFS2_FT_SOCK 6
-#define OCFS2_FT_SYMLINK 7
-
-#define OCFS2_FT_MAX 8
-
-/*
* OCFS2_DIR_PAD defines the directory entries boundaries
*
* NOTE: It must be a multiple of 4
@@ -416,17 +394,6 @@ static struct ocfs2_system_inode_info ocfs2_system_inodes[NUM_SYSTEM_INODES] = {
#define OCFS2_LINKS_HI_SHIFT 16
#define OCFS2_DX_ENTRIES_MAX (0xffffffffU)
-#define S_SHIFT 12
-static unsigned char ocfs2_type_by_mode[S_IFMT >> S_SHIFT] = {
- [S_IFREG >> S_SHIFT] = OCFS2_FT_REG_FILE,
- [S_IFDIR >> S_SHIFT] = OCFS2_FT_DIR,
- [S_IFCHR >> S_SHIFT] = OCFS2_FT_CHRDEV,
- [S_IFBLK >> S_SHIFT] = OCFS2_FT_BLKDEV,
- [S_IFIFO >> S_SHIFT] = OCFS2_FT_FIFO,
- [S_IFSOCK >> S_SHIFT] = OCFS2_FT_SOCK,
- [S_IFLNK >> S_SHIFT] = OCFS2_FT_SYMLINK,
-};
-
/*
* Convenience casts
@@ -501,7 +468,8 @@ struct ocfs2_extent_list {
__le16 l_reserved1;
__le64 l_reserved2; /* Pad to
sizeof(ocfs2_extent_rec) */
-/*10*/ struct ocfs2_extent_rec l_recs[0]; /* Extent records */
+ /* Extent records */
+/*10*/ struct ocfs2_extent_rec l_recs[] __counted_by_le(l_count);
};
/*
@@ -515,7 +483,8 @@ struct ocfs2_chain_list {
__le16 cl_count; /* Total chains in this list */
__le16 cl_next_free_rec; /* Next unused chain slot */
__le64 cl_reserved1;
-/*10*/ struct ocfs2_chain_rec cl_recs[0]; /* Chain records */
+ /* Chain records */
+/*10*/ struct ocfs2_chain_rec cl_recs[] __counted_by_le(cl_count);
};
/*
@@ -527,7 +496,8 @@ struct ocfs2_truncate_log {
/*00*/ __le16 tl_count; /* Total records in this log */
__le16 tl_used; /* Number of records in use */
__le32 tl_reserved1;
-/*08*/ struct ocfs2_truncate_rec tl_recs[0]; /* Truncate records */
+ /* Truncate records */
+/*08*/ struct ocfs2_truncate_rec tl_recs[] __counted_by_le(tl_count);
};
/*
@@ -560,7 +530,7 @@ struct ocfs2_extent_block
* value -1 (0xFFFF) is OCFS2_INVALID_SLOT. This marks a slot empty.
*/
struct ocfs2_slot_map {
-/*00*/ __le16 sm_slots[0];
+/*00*/ DECLARE_FLEX_ARRAY(__le16, sm_slots);
/*
* Actual on-disk size is one block. OCFS2_MAX_SLOTS is 255,
* 255 * sizeof(__le16) == 512B, within the 512B block minimum blocksize.
@@ -571,7 +541,7 @@ struct ocfs2_extended_slot {
/*00*/ __u8 es_valid;
__u8 es_reserved1[3];
__le32 es_node_num;
-/*10*/
+/*08*/
};
/*
@@ -581,7 +551,7 @@ struct ocfs2_extended_slot {
* i_size.
*/
struct ocfs2_slot_map_extended {
-/*00*/ struct ocfs2_extended_slot se_slots[0];
+/*00*/ DECLARE_FLEX_ARRAY(struct ocfs2_extended_slot, se_slots);
/*
* Actual size is i_size of the slot_map system file. It should
* match s_max_slots * sizeof(struct ocfs2_extended_slot)
@@ -647,7 +617,7 @@ struct ocfs2_super_block {
__le16 s_reserved0;
__le32 s_dx_seed[3]; /* seed[0-2] for dx dir hash.
* s_uuid_hash serves as seed[3]. */
-/*C0*/ __le64 s_reserved2[15]; /* Fill out superblock */
+/*C8*/ __le64 s_reserved2[15]; /* Fill out superblock */
/*140*/
/*
@@ -671,7 +641,7 @@ struct ocfs2_local_alloc
__le16 la_size; /* Size of included bitmap, in bytes */
__le16 la_reserved1;
__le64 la_reserved2;
-/*10*/ __u8 la_bitmap[0];
+/*10*/ __u8 la_bitmap[];
};
/*
@@ -684,7 +654,7 @@ struct ocfs2_inline_data
* for data, starting at id_data */
__le16 id_reserved0;
__le32 id_reserved1;
- __u8 id_data[0]; /* Start of user data */
+ __u8 id_data[]; /* Start of user data */
};
/*
@@ -729,7 +699,9 @@ struct ocfs2_dinode {
inode belongs to. Only valid
if allocated from a
discontiguous block group */
-/*A0*/ __le64 i_reserved2[3];
+/*A0*/ __le16 i_dio_orphaned_slot; /* only used for append dio write */
+ __le16 i_reserved1[3];
+ __le64 i_reserved2[2];
/*B8*/ union {
__le64 i_pad1; /* Generic way to refer to this
64bit union */
@@ -758,7 +730,7 @@ struct ocfs2_dinode {
struct ocfs2_extent_list i_list;
struct ocfs2_truncate_log i_dealloc;
struct ocfs2_inline_data i_data;
- __u8 i_symlink[0];
+ DECLARE_FLEX_ARRAY(__u8, i_symlink);
} id2;
/* Actual on-disk size is one block */
};
@@ -797,11 +769,11 @@ struct ocfs2_dir_block_trailer {
* in this block. (unused) */
/*10*/ __u8 db_signature[8]; /* Signature for verification */
__le64 db_reserved2;
- __le64 db_free_next; /* Next block in list (unused) */
-/*20*/ __le64 db_blkno; /* Offset on disk, in blocks */
- __le64 db_parent_dinode; /* dinode which owns me, in
+/*20*/ __le64 db_free_next; /* Next block in list (unused) */
+ __le64 db_blkno; /* Offset on disk, in blocks */
+/*30*/ __le64 db_parent_dinode; /* dinode which owns me, in
blocks */
-/*30*/ struct ocfs2_block_check db_check; /* Error checking */
+ struct ocfs2_block_check db_check; /* Error checking */
/*40*/
};
@@ -827,9 +799,10 @@ struct ocfs2_dx_entry_list {
* possible in de_entries */
__le16 de_num_used; /* Current number of
* de_entries entries */
- struct ocfs2_dx_entry de_entries[0]; /* Indexed dir entries
- * in a packed array of
- * length de_num_used */
+ /* Indexed dir entries in a packed
+ * array of length de_num_used.
+ */
+ struct ocfs2_dx_entry de_entries[] __counted_by_le(de_count);
};
#define OCFS2_DX_FLAG_INLINE 0x01
@@ -914,7 +887,8 @@ struct ocfs2_group_desc
__le16 bg_free_bits_count; /* Free bits count */
__le16 bg_chain; /* What chain I am in. */
/*10*/ __le32 bg_generation;
- __le32 bg_reserved1;
+ __le16 bg_contig_free_bits; /* max contig free bits length */
+ __le16 bg_reserved1;
__le64 bg_next_group; /* Next group in my list, in
blocks */
/*20*/ __le64 bg_parent_dinode; /* dinode which owns me, in
@@ -923,12 +897,12 @@ struct ocfs2_group_desc
/*30*/ struct ocfs2_block_check bg_check; /* Error checking */
__le64 bg_reserved2;
/*40*/ union {
- __u8 bg_bitmap[0];
+ DECLARE_FLEX_ARRAY(__u8, bg_bitmap);
struct {
/*
* Block groups may be discontiguous when
* OCFS2_FEATURE_INCOMPAT_DISCONTIG_BG is set.
- * The extents of a discontigous block group are
+ * The extents of a discontiguous block group are
* stored in bg_list. It is a flat list.
* l_tree_depth must always be zero. A
* discontiguous group is signified by a non-zero
@@ -964,7 +938,8 @@ struct ocfs2_refcount_list {
__le16 rl_used; /* Current number of used records */
__le32 rl_reserved2;
__le64 rl_reserved1; /* Pad to sizeof(ocfs2_refcount_record) */
-/*10*/ struct ocfs2_refcount_rec rl_recs[0]; /* Refcount records */
+ /* Refcount records */
+/*10*/ struct ocfs2_refcount_rec rl_recs[] __counted_by_le(rl_count);
};
@@ -1050,7 +1025,8 @@ struct ocfs2_xattr_header {
buckets. A block uses
xb_check and sets
this field to zero.) */
- struct ocfs2_xattr_entry xh_entries[0]; /* xattr entry list. */
+ /* xattr entry list. */
+ struct ocfs2_xattr_entry xh_entries[] __counted_by_le(xh_count);
};
/*
@@ -1113,7 +1089,7 @@ struct ocfs2_xattr_block {
struct ocfs2_xattr_header xb_header; /* xattr header if this
block contains xattr */
struct ocfs2_xattr_tree_root xb_root;/* xattr tree root if this
- block cotains xattr
+ block contains xattr
tree. */
} xb_attrs;
};
@@ -1236,7 +1212,7 @@ struct ocfs2_local_disk_dqinfo {
/* Header of one chunk of a quota file */
struct ocfs2_local_disk_chunk {
__le32 dqc_free; /* Number of free entries in the bitmap */
- __u8 dqc_bitmap[0]; /* Bitmap of entries in the corresponding
+ __u8 dqc_bitmap[]; /* Bitmap of entries in the corresponding
* chunk of quota file */
};
@@ -1619,7 +1595,7 @@ static inline int ocfs2_sprintf_system_inode_name(char *buf, int len,
static inline void ocfs2_set_de_type(struct ocfs2_dir_entry *de,
umode_t mode)
{
- de->file_type = ocfs2_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
+ de->file_type = fs_umode_to_ftype(mode);
}
static inline int ocfs2_gd_is_discontig(struct ocfs2_group_desc *gd)
generated by cgit (git 2.34.1) at 2025-12-25 20:43:34 +0000