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Diffstat (limited to 'fs/xfs/libxfs/xfs_dinode.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_dinode.h | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/fs/xfs/libxfs/xfs_dinode.h b/fs/xfs/libxfs/xfs_dinode.h deleted file mode 100644 index 623bbe8fd92..00000000000 --- a/fs/xfs/libxfs/xfs_dinode.h +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc. - * 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 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would 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 the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_DINODE_H__ -#define __XFS_DINODE_H__ - -#define XFS_DINODE_MAGIC 0x494e /* 'IN' */ -#define XFS_DINODE_GOOD_VERSION(v) ((v) >= 1 && (v) <= 3) - -typedef struct xfs_timestamp { - __be32 t_sec; /* timestamp seconds */ - __be32 t_nsec; /* timestamp nanoseconds */ -} xfs_timestamp_t; - -/* - * 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_DPTR, XFS_DFORK_APTR, 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. - * - * Note: di_flushiter is only used by v1/2 inodes - it's effectively a zeroed - * padding field for v3 inodes. - */ -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_lo; /* lower part of owner's project id */ - __be16 di_projid_hi; /* higher part owner's project id */ - __u8 di_pad[6]; /* 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 */ - __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 */ - - /* start of the extended dinode, writable fields */ - __le32 di_crc; /* CRC of the inode */ - __be64 di_changecount; /* number of attribute changes */ - __be64 di_lsn; /* flush sequence */ - __be64 di_flags2; /* more random flags */ - __u8 di_pad2[16]; /* more padding for future expansion */ - - /* fields only written to during inode creation */ - xfs_timestamp_t di_crtime; /* time created */ - __be64 di_ino; /* inode number */ - uuid_t di_uuid; /* UUID of the filesystem */ - - /* structure must be padded to 64 bit alignment */ -} xfs_dinode_t; - -#define XFS_DINODE_CRC_OFF offsetof(struct xfs_dinode, di_crc) - -#define DI_MAX_FLUSH 0xffff - -/* - * Size of the core inode on disk. Version 1 and 2 inodes have - * the same size, but version 3 has grown a few additional fields. - */ -static inline uint xfs_dinode_size(int version) -{ - if (version == 3) - return sizeof(struct xfs_dinode); - return offsetof(struct xfs_dinode, di_crc); -} - -/* - * 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. - * The old inode format had a 16 bit link count, so its maximum is USHRT_MAX. - */ -#define XFS_MAXLINK ((1U << 31) - 1U) -#define XFS_MAXLINK_1 65535U - -/* - * Values for di_format - */ -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; - -/* - * Inode minimum and maximum sizes. - */ -#define XFS_DINODE_MIN_LOG 8 -#define XFS_DINODE_MAX_LOG 11 -#define XFS_DINODE_MIN_SIZE (1 << XFS_DINODE_MIN_LOG) -#define XFS_DINODE_MAX_SIZE (1 << XFS_DINODE_MAX_LOG) - -/* - * Inode size for given fs. - */ -#define XFS_LITINO(mp, version) \ - ((int)(((mp)->m_sb.sb_inodesize) - xfs_dinode_size(version))) - -/* - * Inode data & attribute fork sizes, per inode. - */ -#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_DFORK_Q(dip) ? \ - XFS_DFORK_BOFF(dip) : \ - XFS_LITINO(mp, (dip)->di_version)) -#define XFS_DFORK_ASIZE(dip,mp) \ - (XFS_DFORK_Q(dip) ? \ - XFS_LITINO(mp, (dip)->di_version) - 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)) - -/* - * Return pointers to the data or attribute forks. - */ -#define XFS_DFORK_DPTR(dip) \ - ((char *)dip + xfs_dinode_size(dip->di_version)) -#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_DFORK_FORMAT(dip,w) \ - ((w) == XFS_DATA_FORK ? \ - (dip)->di_format : \ - (dip)->di_aformat) -#define XFS_DFORK_NEXTENTS(dip,w) \ - ((w) == XFS_DATA_FORK ? \ - be32_to_cpu((dip)->di_nextents) : \ - be16_to_cpu((dip)->di_anextents)) - -#define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)((bp)->b_addr)) - -/* - * 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. - */ -#define XFS_DIFLAG_REALTIME_BIT 0 /* file's blocks come from rt area */ -#define XFS_DIFLAG_PREALLOC_BIT 1 /* file space has been preallocated */ -#define XFS_DIFLAG_NEWRTBM_BIT 2 /* for rtbitmap inode, new format */ -#define XFS_DIFLAG_IMMUTABLE_BIT 3 /* inode is immutable */ -#define XFS_DIFLAG_APPEND_BIT 4 /* inode is append-only */ -#define XFS_DIFLAG_SYNC_BIT 5 /* inode is written synchronously */ -#define XFS_DIFLAG_NOATIME_BIT 6 /* do not update atime */ -#define XFS_DIFLAG_NODUMP_BIT 7 /* do not dump */ -#define XFS_DIFLAG_RTINHERIT_BIT 8 /* create with realtime bit set */ -#define XFS_DIFLAG_PROJINHERIT_BIT 9 /* create with parents projid */ -#define XFS_DIFLAG_NOSYMLINKS_BIT 10 /* disallow symlink creation */ -#define XFS_DIFLAG_EXTSIZE_BIT 11 /* inode extent size allocator hint */ -#define XFS_DIFLAG_EXTSZINHERIT_BIT 12 /* inherit inode extent size */ -#define XFS_DIFLAG_NODEFRAG_BIT 13 /* do not reorganize/defragment */ -#define XFS_DIFLAG_FILESTREAM_BIT 14 /* use filestream allocator */ -#define XFS_DIFLAG_REALTIME (1 << XFS_DIFLAG_REALTIME_BIT) -#define XFS_DIFLAG_PREALLOC (1 << XFS_DIFLAG_PREALLOC_BIT) -#define XFS_DIFLAG_NEWRTBM (1 << XFS_DIFLAG_NEWRTBM_BIT) -#define XFS_DIFLAG_IMMUTABLE (1 << XFS_DIFLAG_IMMUTABLE_BIT) -#define XFS_DIFLAG_APPEND (1 << XFS_DIFLAG_APPEND_BIT) -#define XFS_DIFLAG_SYNC (1 << XFS_DIFLAG_SYNC_BIT) -#define XFS_DIFLAG_NOATIME (1 << XFS_DIFLAG_NOATIME_BIT) -#define XFS_DIFLAG_NODUMP (1 << XFS_DIFLAG_NODUMP_BIT) -#define XFS_DIFLAG_RTINHERIT (1 << XFS_DIFLAG_RTINHERIT_BIT) -#define XFS_DIFLAG_PROJINHERIT (1 << XFS_DIFLAG_PROJINHERIT_BIT) -#define XFS_DIFLAG_NOSYMLINKS (1 << XFS_DIFLAG_NOSYMLINKS_BIT) -#define XFS_DIFLAG_EXTSIZE (1 << XFS_DIFLAG_EXTSIZE_BIT) -#define XFS_DIFLAG_EXTSZINHERIT (1 << XFS_DIFLAG_EXTSZINHERIT_BIT) -#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 | \ - XFS_DIFLAG_NOATIME | XFS_DIFLAG_NODUMP | XFS_DIFLAG_RTINHERIT | \ - XFS_DIFLAG_PROJINHERIT | XFS_DIFLAG_NOSYMLINKS | XFS_DIFLAG_EXTSIZE | \ - XFS_DIFLAG_EXTSZINHERIT | XFS_DIFLAG_NODEFRAG | XFS_DIFLAG_FILESTREAM) - -#endif /* __XFS_DINODE_H__ */ |