xfs: split out inode log item format definition

The log item format definitions are shared with userspace. Split
them out of header files that contain kernel only defintions to make
it simple to shared them.

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, 189 insertions, 0 deletions

diff --git a/fs/xfs/xfs_log_format.h b/fs/xfs/xfs_log_format.h
index 9f9aeb63545a..fd46a7f2293a 100644
--- a/fs/xfs/xfs_log_format.h
+++ b/fs/xfs/xfs_log_format.h
@@ -18,6 +18,16 @@
 #ifndef __XFS_LOG_FORMAT_H__
 #define __XFS_LOG_FORMAT_H__
 
+/*
+ * On-disk Log Format definitions.
+ *
+ * This file contains all the on-disk format definitions used within the log. It
+ * includes the physical log structure itself, as well as all the log item
+ * format structures that are written into the log and intepreted by log
+ * recovery. We start with the physical log format definitions, and then work
+ * through all the log items definitions and everything they encode into the
+ * log.
+ */
 typedef __uint32_t xlog_tid_t;
 
 #define XLOG_MIN_ICLOGS         2
@@ -175,4 +185,183 @@ typedef struct xfs_log_iovec {
         uint            i_type;         /* type of region */
 } xfs_log_iovec_t;
 
+
+/*
+ * Inode Log Item Format definitions.
+ *
+ * This is the structure used to lay out an inode log item in the
+ * log.  The size of the inline data/extents/b-tree root to be logged
+ * (if any) is indicated in the ilf_dsize field.  Changes to this structure
+ * must be added on to the end.
+ */
+typedef struct xfs_inode_log_format {
+        __uint16_t              ilf_type;       /* inode log item type */
+        __uint16_t              ilf_size;       /* size of this item */
+        __uint32_t              ilf_fields;     /* flags for fields logged */
+        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
+        __uint16_t              ilf_dsize;      /* size of data/ext/root */
+        __uint64_t              ilf_ino;        /* inode number */
+        union {
+                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
+                uuid_t          ilfu_uuid;      /* mount point value */
+        } ilf_u;
+        __int64_t               ilf_blkno;      /* blkno of inode buffer */
+        __int32_t               ilf_len;        /* len of inode buffer */
+        __int32_t               ilf_boffset;    /* off of inode in buffer */
+} xfs_inode_log_format_t;
+
+typedef struct xfs_inode_log_format_32 {
+        __uint16_t              ilf_type;       /* inode log item type */
+        __uint16_t              ilf_size;       /* size of this item */
+        __uint32_t              ilf_fields;     /* flags for fields logged */
+        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
+        __uint16_t              ilf_dsize;      /* size of data/ext/root */
+        __uint64_t              ilf_ino;        /* inode number */
+        union {
+                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
+                uuid_t          ilfu_uuid;      /* mount point value */
+        } ilf_u;
+        __int64_t               ilf_blkno;      /* blkno of inode buffer */
+        __int32_t               ilf_len;        /* len of inode buffer */
+        __int32_t               ilf_boffset;    /* off of inode in buffer */
+} __attribute__((packed)) xfs_inode_log_format_32_t;
+
+typedef struct xfs_inode_log_format_64 {
+        __uint16_t              ilf_type;       /* inode log item type */
+        __uint16_t              ilf_size;       /* size of this item */
+        __uint32_t              ilf_fields;     /* flags for fields logged */
+        __uint16_t              ilf_asize;      /* size of attr d/ext/root */
+        __uint16_t              ilf_dsize;      /* size of data/ext/root */
+        __uint32_t              ilf_pad;        /* pad for 64 bit boundary */
+        __uint64_t              ilf_ino;        /* inode number */
+        union {
+                __uint32_t      ilfu_rdev;      /* rdev value for dev inode*/
+                uuid_t          ilfu_uuid;      /* mount point value */
+        } ilf_u;
+        __int64_t               ilf_blkno;      /* blkno of inode buffer */
+        __int32_t               ilf_len;        /* len of inode buffer */
+        __int32_t               ilf_boffset;    /* off of inode in buffer */
+} xfs_inode_log_format_64_t;
+
+/*
+ * Flags for xfs_trans_log_inode flags field.
+ */
+#define XFS_ILOG_CORE   0x001   /* log standard inode fields */
+#define XFS_ILOG_DDATA  0x002   /* log i_df.if_data */
+#define XFS_ILOG_DEXT   0x004   /* log i_df.if_extents */
+#define XFS_ILOG_DBROOT 0x008   /* log i_df.i_broot */
+#define XFS_ILOG_DEV    0x010   /* log the dev field */
+#define XFS_ILOG_UUID   0x020   /* log the uuid field */
+#define XFS_ILOG_ADATA  0x040   /* log i_af.if_data */
+#define XFS_ILOG_AEXT   0x080   /* log i_af.if_extents */
+#define XFS_ILOG_ABROOT 0x100   /* log i_af.i_broot */
+
+
+/*
+ * The timestamps are dirty, but not necessarily anything else in the inode
+ * core.  Unlike the other fields above this one must never make it to disk
+ * in the ilf_fields of the inode_log_format, but is purely store in-memory in
+ * ili_fields in the inode_log_item.
+ */
+#define XFS_ILOG_TIMESTAMP      0x4000
+
+#define XFS_ILOG_NONCORE        (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
+                                 XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
+                                 XFS_ILOG_UUID | XFS_ILOG_ADATA | \
+                                 XFS_ILOG_AEXT | XFS_ILOG_ABROOT)
+
+#define XFS_ILOG_DFORK          (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
+                                 XFS_ILOG_DBROOT)
+
+#define XFS_ILOG_AFORK          (XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
+                                 XFS_ILOG_ABROOT)
+
+#define XFS_ILOG_ALL            (XFS_ILOG_CORE | XFS_ILOG_DDATA | \
+                                 XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
+                                 XFS_ILOG_DEV | XFS_ILOG_UUID | \
+                                 XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
+                                 XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
+
+static inline int xfs_ilog_fbroot(int w)
+{
+        return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
+}
+
+static inline int xfs_ilog_fext(int w)
+{
+        return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
+}
+
+static inline int xfs_ilog_fdata(int w)
+{
+        return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
+}
+
+/*
+ * Incore version of the on-disk inode core structures. We log this directly
+ * into the journal in host CPU format (for better or worse) and as such
+ * directly mirrors the xfs_dinode structure as it must contain all the same
+ * information.
+ */
+typedef struct xfs_ictimestamp {
+        __int32_t       t_sec;          /* timestamp seconds */
+        __int32_t       t_nsec;         /* timestamp nanoseconds */
+} xfs_ictimestamp_t;
+
+/*
+ * NOTE:  This structure must be kept identical to struct xfs_dinode
+ *        in xfs_dinode.h except for the endianness annotations.
+ */
+typedef struct xfs_icdinode {
+        __uint16_t      di_magic;       /* inode magic # = XFS_DINODE_MAGIC */
+        __uint16_t      di_mode;        /* mode and type of file */
+        __int8_t        di_version;     /* inode version */
+        __int8_t        di_format;      /* format of di_c data */
+        __uint16_t      di_onlink;      /* old number of links to file */
+        __uint32_t      di_uid;         /* owner's user id */
+        __uint32_t      di_gid;         /* owner's group id */
+        __uint32_t      di_nlink;       /* number of links to file */
+        __uint16_t      di_projid_lo;   /* lower part of owner's project id */
+        __uint16_t      di_projid_hi;   /* higher part of owner's project id */
+        __uint8_t       di_pad[6];      /* unused, zeroed space */
+        __uint16_t      di_flushiter;   /* incremented on flush */
+        xfs_ictimestamp_t di_atime;     /* time last accessed */
+        xfs_ictimestamp_t di_mtime;     /* time last modified */
+        xfs_ictimestamp_t di_ctime;     /* time created/inode modified */
+        xfs_fsize_t     di_size;        /* number of bytes in file */
+        xfs_drfsbno_t   di_nblocks;     /* # of direct & btree blocks used */
+        xfs_extlen_t    di_extsize;     /* basic/minimum extent size for file */
+        xfs_extnum_t    di_nextents;    /* number of extents in data fork */
+        xfs_aextnum_t   di_anextents;   /* number of extents in attribute fork*/
+        __uint8_t       di_forkoff;     /* attr fork offs, <<3 for 64b align */
+        __int8_t        di_aformat;     /* format of attr fork's data */
+        __uint32_t      di_dmevmask;    /* DMIG event mask */
+        __uint16_t      di_dmstate;     /* DMIG state info */
+        __uint16_t      di_flags;       /* random flags, XFS_DIFLAG_... */
+        __uint32_t      di_gen;         /* generation number */
+
+        /* di_next_unlinked is the only non-core field in the old dinode */
+        xfs_agino_t     di_next_unlinked;/* agi unlinked list ptr */
+
+        /* start of the extended dinode, writable fields */
+        __uint32_t      di_crc;         /* CRC of the inode */
+        __uint64_t      di_changecount; /* number of attribute changes */
+        xfs_lsn_t       di_lsn;         /* flush sequence */
+        __uint64_t      di_flags2;      /* more random flags */
+        __uint8_t       di_pad2[16];    /* more padding for future expansion */
+
+        /* fields only written to during inode creation */
+        xfs_ictimestamp_t di_crtime;    /* time created */
+        xfs_ino_t       di_ino;         /* inode number */
+        uuid_t          di_uuid;        /* UUID of the filesystem */
+
+        /* structure must be padded to 64 bit alignment */
+} xfs_icdinode_t;
+
+static inline uint xfs_icdinode_size(int version)
+{
+        if (version == 3)
+                return sizeof(struct xfs_icdinode);
+        return offsetof(struct xfs_icdinode, di_next_unlinked);
+}
 #endif /* __XFS_LOG_FORMAT_H__ */