xfs: split out on-disk transaction definitions

There's a bunch of definitions in xfs_trans.h that define on-disk
formats - transaction headers that get written into the log, log
item type definitions, etc. Split out everything into a separate
file so that all which remains in xfs_trans.h are kernel only
definitions.

Also, remove the duplicate magic number definitions for
XFS_TRANS_MAGIC...

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 206 insertions, 0 deletions

diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h
index 02639c7ea404..faf3f4349a75 100644
--- a/fs/xfs/xfs_log_format.h
+++ b/fs/xfs/xfs_log_format.h
@@ -187,6 +187,212 @@ typedef struct xfs_log_iovec {
 
 
 /*
+ * Transaction Header definitions.
+ *
+ * This is the structure written in the log at the head of every transaction. It
+ * identifies the type and id of the transaction, and contains the number of
+ * items logged by the transaction so we know how many to expect during
+ * recovery.
+ *
+ * Do not change the below structure without redoing the code in
+ * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
+ */
+typedef struct xfs_trans_header {
+        uint            th_magic;               /* magic number */
+        uint            th_type;                /* transaction type */
+        __int32_t       th_tid;                 /* transaction id (unused) */
+        uint            th_num_items;           /* num items logged by trans */
+} xfs_trans_header_t;
+
+#define XFS_TRANS_HEADER_MAGIC  0x5452414e      /* TRAN */
+
+/*
+ * Log item types.
+ */
+#define XFS_LI_EFI              0x1236
+#define XFS_LI_EFD              0x1237
+#define XFS_LI_IUNLINK          0x1238
+#define XFS_LI_INODE            0x123b  /* aligned ino chunks, var-size ibufs */
+#define XFS_LI_BUF              0x123c  /* v2 bufs, variable sized inode bufs */
+#define XFS_LI_DQUOT            0x123d
+#define XFS_LI_QUOTAOFF         0x123e
+#define XFS_LI_ICREATE          0x123f
+
+#define XFS_LI_TYPE_DESC \
+        { XFS_LI_EFI,           "XFS_LI_EFI" }, \
+        { XFS_LI_EFD,           "XFS_LI_EFD" }, \
+        { XFS_LI_IUNLINK,       "XFS_LI_IUNLINK" }, \
+        { XFS_LI_INODE,         "XFS_LI_INODE" }, \
+        { XFS_LI_BUF,           "XFS_LI_BUF" }, \
+        { XFS_LI_DQUOT,         "XFS_LI_DQUOT" }, \
+        { XFS_LI_QUOTAOFF,      "XFS_LI_QUOTAOFF" }, \
+        { XFS_LI_ICREATE,       "XFS_LI_ICREATE" }
+
+/*
+ * Transaction types.  Used to distinguish types of buffers.
+ */
+#define XFS_TRANS_SETATTR_NOT_SIZE      1
+#define XFS_TRANS_SETATTR_SIZE          2
+#define XFS_TRANS_INACTIVE              3
+#define XFS_TRANS_CREATE                4
+#define XFS_TRANS_CREATE_TRUNC          5
+#define XFS_TRANS_TRUNCATE_FILE         6
+#define XFS_TRANS_REMOVE                7
+#define XFS_TRANS_LINK                  8
+#define XFS_TRANS_RENAME                9
+#define XFS_TRANS_MKDIR                 10
+#define XFS_TRANS_RMDIR                 11
+#define XFS_TRANS_SYMLINK               12
+#define XFS_TRANS_SET_DMATTRS           13
+#define XFS_TRANS_GROWFS                14
+#define XFS_TRANS_STRAT_WRITE           15
+#define XFS_TRANS_DIOSTRAT              16
+/* 17 was XFS_TRANS_WRITE_SYNC */
+#define XFS_TRANS_WRITEID               18
+#define XFS_TRANS_ADDAFORK              19
+#define XFS_TRANS_ATTRINVAL             20
+#define XFS_TRANS_ATRUNCATE             21
+#define XFS_TRANS_ATTR_SET              22
+#define XFS_TRANS_ATTR_RM               23
+#define XFS_TRANS_ATTR_FLAG             24
+#define XFS_TRANS_CLEAR_AGI_BUCKET      25
+#define XFS_TRANS_QM_SBCHANGE           26
+/*
+ * Dummy entries since we use the transaction type to index into the
+ * trans_type[] in xlog_recover_print_trans_head()
+ */
+#define XFS_TRANS_DUMMY1                27
+#define XFS_TRANS_DUMMY2                28
+#define XFS_TRANS_QM_QUOTAOFF           29
+#define XFS_TRANS_QM_DQALLOC            30
+#define XFS_TRANS_QM_SETQLIM            31
+#define XFS_TRANS_QM_DQCLUSTER          32
+#define XFS_TRANS_QM_QINOCREATE         33
+#define XFS_TRANS_QM_QUOTAOFF_END       34
+#define XFS_TRANS_SB_UNIT               35
+#define XFS_TRANS_FSYNC_TS              36
+#define XFS_TRANS_GROWFSRT_ALLOC        37
+#define XFS_TRANS_GROWFSRT_ZERO         38
+#define XFS_TRANS_GROWFSRT_FREE         39
+#define XFS_TRANS_SWAPEXT               40
+#define XFS_TRANS_SB_COUNT              41
+#define XFS_TRANS_CHECKPOINT            42
+#define XFS_TRANS_ICREATE               43
+#define XFS_TRANS_TYPE_MAX              43
+/* new transaction types need to be reflected in xfs_logprint(8) */
+
+#define XFS_TRANS_TYPES \
+        { XFS_TRANS_SETATTR_NOT_SIZE,   "SETATTR_NOT_SIZE" }, \
+        { XFS_TRANS_SETATTR_SIZE,       "SETATTR_SIZE" }, \
+        { XFS_TRANS_INACTIVE,           "INACTIVE" }, \
+        { XFS_TRANS_CREATE,             "CREATE" }, \
+        { XFS_TRANS_CREATE_TRUNC,       "CREATE_TRUNC" }, \
+        { XFS_TRANS_TRUNCATE_FILE,      "TRUNCATE_FILE" }, \
+        { XFS_TRANS_REMOVE,             "REMOVE" }, \
+        { XFS_TRANS_LINK,               "LINK" }, \
+        { XFS_TRANS_RENAME,             "RENAME" }, \
+        { XFS_TRANS_MKDIR,              "MKDIR" }, \
+        { XFS_TRANS_RMDIR,              "RMDIR" }, \
+        { XFS_TRANS_SYMLINK,            "SYMLINK" }, \
+        { XFS_TRANS_SET_DMATTRS,        "SET_DMATTRS" }, \
+        { XFS_TRANS_GROWFS,             "GROWFS" }, \
+        { XFS_TRANS_STRAT_WRITE,        "STRAT_WRITE" }, \
+        { XFS_TRANS_DIOSTRAT,           "DIOSTRAT" }, \
+        { XFS_TRANS_WRITEID,            "WRITEID" }, \
+        { XFS_TRANS_ADDAFORK,           "ADDAFORK" }, \
+        { XFS_TRANS_ATTRINVAL,          "ATTRINVAL" }, \
+        { XFS_TRANS_ATRUNCATE,          "ATRUNCATE" }, \
+        { XFS_TRANS_ATTR_SET,           "ATTR_SET" }, \
+        { XFS_TRANS_ATTR_RM,            "ATTR_RM" }, \
+        { XFS_TRANS_ATTR_FLAG,          "ATTR_FLAG" }, \
+        { XFS_TRANS_CLEAR_AGI_BUCKET,   "CLEAR_AGI_BUCKET" }, \
+        { XFS_TRANS_QM_SBCHANGE,        "QM_SBCHANGE" }, \
+        { XFS_TRANS_QM_QUOTAOFF,        "QM_QUOTAOFF" }, \
+        { XFS_TRANS_QM_DQALLOC,         "QM_DQALLOC" }, \
+        { XFS_TRANS_QM_SETQLIM,         "QM_SETQLIM" }, \
+        { XFS_TRANS_QM_DQCLUSTER,       "QM_DQCLUSTER" }, \
+        { XFS_TRANS_QM_QINOCREATE,      "QM_QINOCREATE" }, \
+        { XFS_TRANS_QM_QUOTAOFF_END,    "QM_QOFF_END" }, \
+        { XFS_TRANS_SB_UNIT,            "SB_UNIT" }, \
+        { XFS_TRANS_FSYNC_TS,           "FSYNC_TS" }, \
+        { XFS_TRANS_GROWFSRT_ALLOC,     "GROWFSRT_ALLOC" }, \
+        { XFS_TRANS_GROWFSRT_ZERO,      "GROWFSRT_ZERO" }, \
+        { XFS_TRANS_GROWFSRT_FREE,      "GROWFSRT_FREE" }, \
+        { XFS_TRANS_SWAPEXT,            "SWAPEXT" }, \
+        { XFS_TRANS_SB_COUNT,           "SB_COUNT" }, \
+        { XFS_TRANS_CHECKPOINT,         "CHECKPOINT" }, \
+        { XFS_TRANS_DUMMY1,             "DUMMY1" }, \
+        { XFS_TRANS_DUMMY2,             "DUMMY2" }, \
+        { XLOG_UNMOUNT_REC_TYPE,        "UNMOUNT" }
+
+/*
+ * This structure is used to track log items associated with
+ * a transaction.  It points to the log item and keeps some
+ * flags to track the state of the log item.  It also tracks
+ * the amount of space needed to log the item it describes
+ * once we get to commit processing (see xfs_trans_commit()).
+ */
+struct xfs_log_item_desc {
+        struct xfs_log_item     *lid_item;
+        struct list_head        lid_trans;
+        unsigned char           lid_flags;
+};
+
+#define XFS_LID_DIRTY           0x1
+
+/*
+ * Values for t_flags.
+ */
+#define XFS_TRANS_DIRTY         0x01    /* something needs to be logged */
+#define XFS_TRANS_SB_DIRTY      0x02    /* superblock is modified */
+#define XFS_TRANS_PERM_LOG_RES  0x04    /* xact took a permanent log res */
+#define XFS_TRANS_SYNC          0x08    /* make commit synchronous */
+#define XFS_TRANS_DQ_DIRTY      0x10    /* at least one dquot in trx dirty */
+#define XFS_TRANS_RESERVE       0x20    /* OK to use reserved data blocks */
+#define XFS_TRANS_FREEZE_PROT   0x40    /* Transaction has elevated writer
+                                           count in superblock */
+
+/*
+ * Values for call flags parameter.
+ */
+#define XFS_TRANS_RELEASE_LOG_RES       0x4
+#define XFS_TRANS_ABORT                 0x8
+
+/*
+ * Field values for xfs_trans_mod_sb.
+ */
+#define XFS_TRANS_SB_ICOUNT             0x00000001
+#define XFS_TRANS_SB_IFREE              0x00000002
+#define XFS_TRANS_SB_FDBLOCKS           0x00000004
+#define XFS_TRANS_SB_RES_FDBLOCKS       0x00000008
+#define XFS_TRANS_SB_FREXTENTS          0x00000010
+#define XFS_TRANS_SB_RES_FREXTENTS      0x00000020
+#define XFS_TRANS_SB_DBLOCKS            0x00000040
+#define XFS_TRANS_SB_AGCOUNT            0x00000080
+#define XFS_TRANS_SB_IMAXPCT            0x00000100
+#define XFS_TRANS_SB_REXTSIZE           0x00000200
+#define XFS_TRANS_SB_RBMBLOCKS          0x00000400
+#define XFS_TRANS_SB_RBLOCKS            0x00000800
+#define XFS_TRANS_SB_REXTENTS           0x00001000
+#define XFS_TRANS_SB_REXTSLOG           0x00002000
+
+/*
+ * Here we centralize the specification of XFS meta-data buffer
+ * reference count values.  This determine how hard the buffer
+ * cache tries to hold onto the buffer.
+ */
+#define XFS_AGF_REF             4
+#define XFS_AGI_REF             4
+#define XFS_AGFL_REF            3
+#define XFS_INO_BTREE_REF       3
+#define XFS_ALLOC_BTREE_REF     2
+#define XFS_BMAP_BTREE_REF      2
+#define XFS_DIR_BTREE_REF       2
+#define XFS_INO_REF             2
+#define XFS_ATTR_BTREE_REF      1
+#define XFS_DQUOT_REF           1
+
+/*
  * Inode Log Item Format definitions.
  *
  * This is the structure used to lay out an inode log item in the