mirror of
https://github.com/torvalds/linux.git
synced 2024-10-31 09:11:49 +00:00
45ba598e56
Currently XFS_IFORK_* and XFS_DFORK* are implemented by means of XFS_CFORK* macros. But given that XFS_IFORK_* operates on an xfs_inode that embedds and xfs_icdinode_core and XFS_DFORK_* operates on an xfs_dinode that embedds a xfs_dinode_core one will have to do endian swapping while the other doesn't. Instead of having the current mess with the CFORK macros that have byteswapping and non-byteswapping version (which are inconsistantly named while we're at it) just define each family of the macros to stand by itself and simplify the whole matter. A few direct references to the CFORK variants were cleaned up to use IFORK or DFORK to make this possible. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30163a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
256 lines
9.4 KiB
C
256 lines
9.4 KiB
C
/*
|
|
* 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__
|
|
|
|
struct xfs_buf;
|
|
struct xfs_mount;
|
|
|
|
#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 {
|
|
__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, the offsets table in xfs_ialloc_log_di() and struct xfs_icdinode
|
|
* in xfs_inode.h.
|
|
*/
|
|
typedef struct xfs_dinode_core {
|
|
__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 */
|
|
__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 */
|
|
} xfs_dinode_core_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.
|
|
*/
|
|
__be32 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 */
|
|
__be32 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.
|
|
* 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
|
|
|
|
/*
|
|
* 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 */
|
|
} 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) ((mp)->m_litino)
|
|
#define XFS_BROOT_SIZE_ADJ \
|
|
(sizeof(xfs_bmbt_block_t) - sizeof(xfs_bmdr_block_t))
|
|
|
|
/*
|
|
* Inode data & attribute fork sizes, per inode.
|
|
*/
|
|
#define XFS_DFORK_Q(dip) ((dip)->di_core.di_forkoff != 0)
|
|
#define XFS_DFORK_BOFF(dip) ((int)((dip)->di_core.di_forkoff << 3))
|
|
|
|
#define XFS_DFORK_DSIZE(dip,mp) \
|
|
(XFS_DFORK_Q(dip) ? \
|
|
XFS_DFORK_BOFF(dip) : \
|
|
XFS_LITINO(mp))
|
|
#define XFS_DFORK_ASIZE(dip,mp) \
|
|
(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_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) \
|
|
((w) == XFS_DATA_FORK ? XFS_DFORK_DPTR(dip) : XFS_DFORK_APTR(dip))
|
|
#define XFS_DFORK_FORMAT(dip,w) \
|
|
((w) == XFS_DATA_FORK ? \
|
|
(dip)->di_core.di_format : \
|
|
(dip)->di_core.di_aformat)
|
|
#define XFS_DFORK_NEXTENTS(dip,w) \
|
|
((w) == XFS_DATA_FORK ? \
|
|
be32_to_cpu((dip)->di_core.di_nextents) : \
|
|
be16_to_cpu((dip)->di_core.di_anextents))
|
|
|
|
#define XFS_BUF_TO_DINODE(bp) ((xfs_dinode_t *)XFS_BUF_PTR(bp))
|
|
|
|
/*
|
|
* 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__ */
|