X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_dinode.h;h=e5b153b2e6a34b527ec65ec57e0b60d9ce9cb073;hb=5a25f1abb26f5ab7c6c72fe0b3807c137ee484bb;hp=fefd0116bac9577a61b51a5c0d047c9f230784ea;hpb=2a82b8be8a8dacb48cb7371449a7a9daa558b4a8;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/xfs/xfs_dinode.h b/fs/xfs/xfs_dinode.h index fefd011..e5b153b 100644 --- a/fs/xfs/xfs_dinode.h +++ b/fs/xfs/xfs_dinode.h @@ -18,86 +18,61 @@ #ifndef __XFS_DINODE_H__ #define __XFS_DINODE_H__ -struct xfs_buf; -struct xfs_mount; +#define XFS_DINODE_MAGIC 0x494e /* 'IN' */ +#define XFS_DINODE_GOOD_VERSION(v) (((v) == 1 || (v) == 2)) -#define XFS_DINODE_VERSION_1 1 -#define XFS_DINODE_VERSION_2 2 -#define XFS_DINODE_GOOD_VERSION(v) \ - (((v) == XFS_DINODE_VERSION_1 || (v) == XFS_DINODE_VERSION_2)) -#define XFS_DINODE_MAGIC 0x494e /* 'IN' */ - -/* - * Disk inode structure. - * This is just the header; the inode is expanded to fill a variable size - * with the last field expanding. It is split into the core and "other" - * because we only need the core part in the in-core inode. - */ typedef struct xfs_timestamp { - __int32_t t_sec; /* timestamp seconds */ - __int32_t t_nsec; /* timestamp nanoseconds */ + __be32 t_sec; /* timestamp seconds */ + __be32 t_nsec; /* timestamp nanoseconds */ } xfs_timestamp_t; /* - * Note: Coordinate changes to this structure with the XFS_DI_* #defines - * below and the offsets table in xfs_ialloc_log_di(). + * On-disk inode structure. + * + * This is just the header or "dinode core", the inode is expanded to fill a + * variable size the leftover area split into a data and an attribute fork. + * The format of the data and attribute fork depends on the format of the + * inode as indicated by di_format and di_aformat. To access the data and + * attribute use the XFS_DFORK_PTR, XFS_DFORK_DPTR, and XFS_DFORK_PTR macros + * below. + * + * There is a very similar struct icdinode in xfs_inode which matches the + * layout of the first 96 bytes of this structure, but is kept in native + * format instead of big endian. */ -typedef struct xfs_dinode_core -{ - __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; /* owner's project id */ - __uint8_t di_pad[8]; /* unused, zeroed space */ - __uint16_t di_flushiter; /* incremented on flush */ +typedef struct xfs_dinode { + __be16 di_magic; /* inode magic # = XFS_DINODE_MAGIC */ + __be16 di_mode; /* mode and type of file */ + __u8 di_version; /* inode version */ + __u8 di_format; /* format of di_c data */ + __be16 di_onlink; /* old number of links to file */ + __be32 di_uid; /* owner's user id */ + __be32 di_gid; /* owner's group id */ + __be32 di_nlink; /* number of links to file */ + __be16 di_projid; /* owner's project id */ + __u8 di_pad[8]; /* unused, zeroed space */ + __be16 di_flushiter; /* incremented on flush */ xfs_timestamp_t di_atime; /* time last accessed */ xfs_timestamp_t di_mtime; /* time last modified */ xfs_timestamp_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 */ -} xfs_dinode_core_t; + __be64 di_size; /* number of bytes in file */ + __be64 di_nblocks; /* # of direct & btree blocks used */ + __be32 di_extsize; /* basic/minimum extent size for file */ + __be32 di_nextents; /* number of extents in data fork */ + __be16 di_anextents; /* number of extents in attribute fork*/ + __u8 di_forkoff; /* attr fork offs, <<3 for 64b align */ + __s8 di_aformat; /* format of attr fork's data */ + __be32 di_dmevmask; /* DMIG event mask */ + __be16 di_dmstate; /* DMIG state info */ + __be16 di_flags; /* random flags, XFS_DIFLAG_... */ + __be32 di_gen; /* generation number */ + + /* di_next_unlinked is the only non-core field in the old dinode */ + __be32 di_next_unlinked;/* agi unlinked list ptr */ +} __attribute__((packed)) xfs_dinode_t; #define DI_MAX_FLUSH 0xffff -typedef struct xfs_dinode -{ - xfs_dinode_core_t di_core; - /* - * In adding anything between the core and the union, be - * sure to update the macros like XFS_LITINO below and - * XFS_BMAP_RBLOCK_DSIZE in xfs_bmap_btree.h. - */ - xfs_agino_t di_next_unlinked;/* agi unlinked list ptr */ - union { - xfs_bmdr_block_t di_bmbt; /* btree root block */ - xfs_bmbt_rec_32_t di_bmx[1]; /* extent list */ - xfs_dir2_sf_t di_dir2sf; /* shortform directory v2 */ - char di_c[1]; /* local contents */ - xfs_dev_t di_dev; /* device for S_IFCHR/S_IFBLK */ - uuid_t di_muuid; /* mount point value */ - char di_symlink[1]; /* local symbolic link */ - } di_u; - union { - xfs_bmdr_block_t di_abmbt; /* btree root block */ - xfs_bmbt_rec_32_t di_abmx[1]; /* extent list */ - xfs_attr_shortform_t di_attrsf; /* shortform attribute list */ - } di_a; -} xfs_dinode_t; - /* * The 32 bit link count in the inode theoretically maxes out at UINT_MAX. * Since the pathconf interface is signed, we use 2^31 - 1 instead. @@ -107,50 +82,14 @@ typedef struct xfs_dinode #define XFS_MAXLINK_1 65535U /* - * Bit names for logging disk inodes only - */ -#define XFS_DI_MAGIC 0x0000001 -#define XFS_DI_MODE 0x0000002 -#define XFS_DI_VERSION 0x0000004 -#define XFS_DI_FORMAT 0x0000008 -#define XFS_DI_ONLINK 0x0000010 -#define XFS_DI_UID 0x0000020 -#define XFS_DI_GID 0x0000040 -#define XFS_DI_NLINK 0x0000080 -#define XFS_DI_PROJID 0x0000100 -#define XFS_DI_PAD 0x0000200 -#define XFS_DI_ATIME 0x0000400 -#define XFS_DI_MTIME 0x0000800 -#define XFS_DI_CTIME 0x0001000 -#define XFS_DI_SIZE 0x0002000 -#define XFS_DI_NBLOCKS 0x0004000 -#define XFS_DI_EXTSIZE 0x0008000 -#define XFS_DI_NEXTENTS 0x0010000 -#define XFS_DI_NAEXTENTS 0x0020000 -#define XFS_DI_FORKOFF 0x0040000 -#define XFS_DI_AFORMAT 0x0080000 -#define XFS_DI_DMEVMASK 0x0100000 -#define XFS_DI_DMSTATE 0x0200000 -#define XFS_DI_FLAGS 0x0400000 -#define XFS_DI_GEN 0x0800000 -#define XFS_DI_NEXT_UNLINKED 0x1000000 -#define XFS_DI_U 0x2000000 -#define XFS_DI_A 0x4000000 -#define XFS_DI_NUM_BITS 27 -#define XFS_DI_ALL_BITS ((1 << XFS_DI_NUM_BITS) - 1) -#define XFS_DI_CORE_BITS (XFS_DI_ALL_BITS & ~(XFS_DI_U|XFS_DI_A)) - -/* * Values for di_format */ -typedef enum xfs_dinode_fmt -{ - XFS_DINODE_FMT_DEV, /* CHR, BLK: di_dev */ - XFS_DINODE_FMT_LOCAL, /* DIR, REG: di_c */ - /* LNK: di_symlink */ - XFS_DINODE_FMT_EXTENTS, /* DIR, REG, LNK: di_bmx */ - XFS_DINODE_FMT_BTREE, /* DIR, REG, LNK: di_bmbt */ - XFS_DINODE_FMT_UUID /* MNT: di_uuid */ +typedef enum xfs_dinode_fmt { + XFS_DINODE_FMT_DEV, /* xfs_dev_t */ + XFS_DINODE_FMT_LOCAL, /* bulk data */ + XFS_DINODE_FMT_EXTENTS, /* struct xfs_bmbt_rec */ + XFS_DINODE_FMT_BTREE, /* struct xfs_bmdr_block */ + XFS_DINODE_FMT_UUID /* uuid_t */ } xfs_dinode_fmt_t; /* @@ -164,81 +103,67 @@ typedef enum xfs_dinode_fmt /* * Inode size for given fs. */ -#define XFS_LITINO(mp) ((mp)->m_litino) +#define XFS_LITINO(mp) \ + ((int)(((mp)->m_sb.sb_inodesize) - sizeof(struct xfs_dinode))) + #define XFS_BROOT_SIZE_ADJ \ - (sizeof(xfs_bmbt_block_t) - sizeof(xfs_bmdr_block_t)) + (XFS_BTREE_LBLOCK_LEN - sizeof(xfs_bmdr_block_t)) /* * Inode data & attribute fork sizes, per inode. */ -#define XFS_CFORK_Q(dcp) ((dcp)->di_forkoff != 0) -#define XFS_CFORK_Q_DISK(dcp) ((dcp)->di_forkoff != 0) - -#define XFS_CFORK_BOFF(dcp) ((int)((dcp)->di_forkoff << 3)) -#define XFS_CFORK_BOFF_DISK(dcp) \ - ((int)(INT_GET((dcp)->di_forkoff, ARCH_CONVERT) << 3)) - -#define XFS_CFORK_DSIZE_DISK(dcp,mp) \ - (XFS_CFORK_Q_DISK(dcp) ? XFS_CFORK_BOFF_DISK(dcp) : XFS_LITINO(mp)) -#define XFS_CFORK_DSIZE(dcp,mp) \ - (XFS_CFORK_Q(dcp) ? XFS_CFORK_BOFF(dcp) : XFS_LITINO(mp)) - -#define XFS_CFORK_ASIZE_DISK(dcp,mp) \ - (XFS_CFORK_Q_DISK(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF_DISK(dcp) : 0) -#define XFS_CFORK_ASIZE(dcp,mp) \ - (XFS_CFORK_Q(dcp) ? XFS_LITINO(mp) - XFS_CFORK_BOFF(dcp) : 0) - -#define XFS_CFORK_SIZE_DISK(dcp,mp,w) \ - ((w) == XFS_DATA_FORK ? \ - XFS_CFORK_DSIZE_DISK(dcp, mp) : \ - XFS_CFORK_ASIZE_DISK(dcp, mp)) -#define XFS_CFORK_SIZE(dcp,mp,w) \ - ((w) == XFS_DATA_FORK ? \ - XFS_CFORK_DSIZE(dcp, mp) : XFS_CFORK_ASIZE(dcp, mp)) +#define XFS_DFORK_Q(dip) ((dip)->di_forkoff != 0) +#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_forkoff << 3)) #define XFS_DFORK_DSIZE(dip,mp) \ - XFS_CFORK_DSIZE_DISK(&(dip)->di_core, mp) -#define XFS_DFORK_DSIZE_HOST(dip,mp) \ - XFS_CFORK_DSIZE(&(dip)->di_core, mp) + (XFS_DFORK_Q(dip) ? \ + XFS_DFORK_BOFF(dip) : \ + XFS_LITINO(mp)) #define XFS_DFORK_ASIZE(dip,mp) \ - XFS_CFORK_ASIZE_DISK(&(dip)->di_core, mp) -#define XFS_DFORK_ASIZE_HOST(dip,mp) \ - XFS_CFORK_ASIZE(&(dip)->di_core, mp) -#define XFS_DFORK_SIZE(dip,mp,w) \ - XFS_CFORK_SIZE_DISK(&(dip)->di_core, mp, w) -#define XFS_DFORK_SIZE_HOST(dip,mp,w) \ - XFS_CFORK_SIZE(&(dip)->di_core, mp, w) + (XFS_DFORK_Q(dip) ? \ + XFS_LITINO(mp) - XFS_DFORK_BOFF(dip) : \ + 0) +#define XFS_DFORK_SIZE(dip,mp,w) \ + ((w) == XFS_DATA_FORK ? \ + XFS_DFORK_DSIZE(dip, mp) : \ + XFS_DFORK_ASIZE(dip, mp)) -#define XFS_DFORK_Q(dip) XFS_CFORK_Q_DISK(&(dip)->di_core) -#define XFS_DFORK_BOFF(dip) XFS_CFORK_BOFF_DISK(&(dip)->di_core) -#define XFS_DFORK_DPTR(dip) ((dip)->di_u.di_c) -#define XFS_DFORK_APTR(dip) \ - ((dip)->di_u.di_c + XFS_DFORK_BOFF(dip)) -#define XFS_DFORK_PTR(dip,w) \ +/* + * Return pointers to the data or attribute forks. + */ +#define XFS_DFORK_DPTR(dip) \ + ((char *)(dip) + sizeof(struct xfs_dinode)) +#define XFS_DFORK_APTR(dip) \ + (XFS_DFORK_DPTR(dip) + XFS_DFORK_BOFF(dip)) +#define XFS_DFORK_PTR(dip,w) \ ((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip)) -#define XFS_CFORK_FORMAT(dcp,w) \ - ((w) == XFS_DATA_FORK ? (dcp)->di_format : (dcp)->di_aformat) -#define XFS_CFORK_FMT_SET(dcp,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((dcp)->di_format = (n)) : ((dcp)->di_aformat = (n))) -#define XFS_DFORK_FORMAT(dip,w) XFS_CFORK_FORMAT(&(dip)->di_core, w) -#define XFS_CFORK_NEXTENTS_DISK(dcp,w) \ +#define XFS_DFORK_FORMAT(dip,w) \ ((w) == XFS_DATA_FORK ? \ - INT_GET((dcp)->di_nextents, ARCH_CONVERT) : \ - INT_GET((dcp)->di_anextents, ARCH_CONVERT)) -#define XFS_CFORK_NEXTENTS(dcp,w) \ - ((w) == XFS_DATA_FORK ? (dcp)->di_nextents : (dcp)->di_anextents) -#define XFS_DFORK_NEXTENTS(dip,w) XFS_CFORK_NEXTENTS_DISK(&(dip)->di_core, w) -#define XFS_DFORK_NEXTENTS_HOST(dip,w) XFS_CFORK_NEXTENTS(&(dip)->di_core, w) - -#define XFS_CFORK_NEXT_SET(dcp,w,n) \ + (dip)->di_format : \ + (dip)->di_aformat) +#define XFS_DFORK_NEXTENTS(dip,w) \ ((w) == XFS_DATA_FORK ? \ - ((dcp)->di_nextents = (n)) : ((dcp)->di_anextents = (n))) + be32_to_cpu((dip)->di_nextents) : \ + be16_to_cpu((dip)->di_anextents)) #define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp)) /* + * For block and character special files the 32bit dev_t is stored at the + * beginning of the data fork. + */ +static inline xfs_dev_t xfs_dinode_get_rdev(struct xfs_dinode *dip) +{ + return be32_to_cpu(*(__be32 *)XFS_DFORK_DPTR(dip)); +} + +static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev) +{ + *(__be32 *)XFS_DFORK_DPTR(dip) = cpu_to_be32(rdev); +} + +/* * Values for di_flags * There should be a one-to-one correspondence between these flags and the * XFS_XFLAG_s. @@ -274,6 +199,12 @@ typedef enum xfs_dinode_fmt #define XFS_DIFLAG_NODEFRAG (1 << XFS_DIFLAG_NODEFRAG_BIT) #define XFS_DIFLAG_FILESTREAM (1 << XFS_DIFLAG_FILESTREAM_BIT) +#ifdef CONFIG_XFS_RT +#define XFS_IS_REALTIME_INODE(ip) ((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) +#else +#define XFS_IS_REALTIME_INODE(ip) (0) +#endif + #define XFS_DIFLAG_ANY \ (XFS_DIFLAG_REALTIME | XFS_DIFLAG_PREALLOC | XFS_DIFLAG_NEWRTBM | \ XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND | XFS_DIFLAG_SYNC | \