6743099ce5
This patch adds support for 32bit project quota identifiers. On disk format is backward compatible with 16bit projid numbers. projid on disk is now kept in two 16bit values - di_projid_lo (which holds the same position as old 16bit projid value) and new di_projid_hi (takes existing padding) and converts from/to 32bit value on the fly. xfs_admin (for existing fs), mkfs.xfs (for new fs) needs to be used to enable PROJID32BIT support. Signed-off-by: Arkadiusz Miśkiewicz <arekm@maven.pl> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
217 lines
8.2 KiB
C
217 lines
8.2 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__
|
|
|
|
#define XFS_DINODE_MAGIC 0x494e /* 'IN' */
|
|
#define XFS_DINODE_GOOD_VERSION(v) (((v) == 1 || (v) == 2))
|
|
|
|
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_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 {
|
|
__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 */
|
|
} __attribute__((packed)) xfs_dinode_t;
|
|
|
|
#define DI_MAX_FLUSH 0xffff
|
|
|
|
/*
|
|
* 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) \
|
|
((int)(((mp)->m_sb.sb_inodesize) - sizeof(struct xfs_dinode)))
|
|
|
|
#define XFS_BROOT_SIZE_ADJ \
|
|
(XFS_BTREE_LBLOCK_LEN - sizeof(xfs_bmdr_block_t))
|
|
|
|
/*
|
|
* 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))
|
|
#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))
|
|
|
|
/*
|
|
* 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_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 *)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.
|
|
*/
|
|
#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__ */
|