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linux/fs/xfs/xfs_fs.h
Nathan Scott 77bc5beb59 [XFS] Makes more sense to use the fsxattr interface instead of adding new 
ioctls for project IDs.

SGI-PV: 938145
SGI-Modid: xfs-linux:xfs-kern:22899a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-06-21 15:48:04 +10:00

529 lines
19 KiB
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/*
* Copyright (c) 1995-2003 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_FS_H__
#define __XFS_FS_H__
/*
* SGI's XFS filesystem's major stuff (constants, structures)
*/
#define XFS_NAME "xfs"
/*
* Direct I/O attribute record used with XFS_IOC_DIOINFO
* d_miniosz is the min xfer size, xfer size multiple and file seek offset
* alignment.
*/
#ifndef HAVE_DIOATTR
struct dioattr {
__u32 d_mem; /* data buffer memory alignment */
__u32 d_miniosz; /* min xfer size */
__u32 d_maxiosz; /* max xfer size */
};
#endif
/*
* Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR.
*/
#ifndef HAVE_FSXATTR
struct fsxattr {
__u32 fsx_xflags; /* xflags field value (get/set) */
__u32 fsx_extsize; /* extsize field value (get/set)*/
__u32 fsx_nextents; /* nextents field value (get) */
__u32 fsx_projid; /* project identifier (get/set) */
unsigned char fsx_pad[12];
};
#endif
/*
* Flags for the bs_xflags/fsx_xflags field
* There should be a one-to-one correspondence between these flags and the
* XFS_DIFLAG_s.
*/
#define XFS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
#define XFS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
#define XFS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
#define XFS_XFLAG_APPEND 0x00000010 /* all writes append */
#define XFS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
#define XFS_XFLAG_NOATIME 0x00000040 /* do not update access time */
#define XFS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
#define XFS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
#define XFS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
#define XFS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
#define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
/*
* Structure for XFS_IOC_GETBMAP.
* On input, fill in bmv_offset and bmv_length of the first structure
* to indicate the area of interest in the file, and bmv_entry with the
* number of array elements given. The first structure is updated on
* return to give the offset and length for the next call.
*/
#ifndef HAVE_GETBMAP
struct getbmap {
__s64 bmv_offset; /* file offset of segment in blocks */
__s64 bmv_block; /* starting block (64-bit daddr_t) */
__s64 bmv_length; /* length of segment, blocks */
__s32 bmv_count; /* # of entries in array incl. 1st */
__s32 bmv_entries; /* # of entries filled in (output) */
};
#endif
/*
* Structure for XFS_IOC_GETBMAPX. Fields bmv_offset through bmv_entries
* are used exactly as in the getbmap structure. The getbmapx structure
* has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
* is only used for the first structure. It contains input flags
* specifying XFS_IOC_GETBMAPX actions. The bmv_oflags field is filled
* in by the XFS_IOC_GETBMAPX command for each returned structure after
* the first.
*/
#ifndef HAVE_GETBMAPX
struct getbmapx {
__s64 bmv_offset; /* file offset of segment in blocks */
__s64 bmv_block; /* starting block (64-bit daddr_t) */
__s64 bmv_length; /* length of segment, blocks */
__s32 bmv_count; /* # of entries in array incl. 1st */
__s32 bmv_entries; /* # of entries filled in (output). */
__s32 bmv_iflags; /* input flags (1st structure) */
__s32 bmv_oflags; /* output flags (after 1st structure)*/
__s32 bmv_unused1; /* future use */
__s32 bmv_unused2; /* future use */
};
#endif
/* bmv_iflags values - set by XFS_IOC_GETBMAPX caller. */
#define BMV_IF_ATTRFORK 0x1 /* return attr fork rather than data */
#define BMV_IF_NO_DMAPI_READ 0x2 /* Do not generate DMAPI read event */
#define BMV_IF_PREALLOC 0x4 /* rtn status BMV_OF_PREALLOC if req */
#define BMV_IF_VALID (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC)
#ifdef __KERNEL__
#define BMV_IF_EXTENDED 0x40000000 /* getpmapx if set */
#endif
/* bmv_oflags values - returned for for each non-header segment */
#define BMV_OF_PREALLOC 0x1 /* segment = unwritten pre-allocation */
/* Convert getbmap <-> getbmapx - move fields from p1 to p2. */
#define GETBMAP_CONVERT(p1,p2) { \
p2.bmv_offset = p1.bmv_offset; \
p2.bmv_block = p1.bmv_block; \
p2.bmv_length = p1.bmv_length; \
p2.bmv_count = p1.bmv_count; \
p2.bmv_entries = p1.bmv_entries; }
/*
* Structure for XFS_IOC_FSSETDM.
* For use by backup and restore programs to set the XFS on-disk inode
* fields di_dmevmask and di_dmstate. These must be set to exactly and
* only values previously obtained via xfs_bulkstat! (Specifically the
* xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
*/
#ifndef HAVE_FSDMIDATA
struct fsdmidata {
__u32 fsd_dmevmask; /* corresponds to di_dmevmask */
__u16 fsd_padding;
__u16 fsd_dmstate; /* corresponds to di_dmstate */
};
#endif
/*
* File segment locking set data type for 64 bit access.
* Also used for all the RESV/FREE interfaces.
*/
typedef struct xfs_flock64 {
__s16 l_type;
__s16 l_whence;
__s64 l_start;
__s64 l_len; /* len == 0 means until end of file */
__s32 l_sysid;
__u32 l_pid;
__s32 l_pad[4]; /* reserve area */
} xfs_flock64_t;
/*
* Output for XFS_IOC_FSGEOMETRY_V1
*/
typedef struct xfs_fsop_geom_v1 {
__u32 blocksize; /* filesystem (data) block size */
__u32 rtextsize; /* realtime extent size */
__u32 agblocks; /* fsblocks in an AG */
__u32 agcount; /* number of allocation groups */
__u32 logblocks; /* fsblocks in the log */
__u32 sectsize; /* (data) sector size, bytes */
__u32 inodesize; /* inode size in bytes */
__u32 imaxpct; /* max allowed inode space(%) */
__u64 datablocks; /* fsblocks in data subvolume */
__u64 rtblocks; /* fsblocks in realtime subvol */
__u64 rtextents; /* rt extents in realtime subvol*/
__u64 logstart; /* starting fsblock of the log */
unsigned char uuid[16]; /* unique id of the filesystem */
__u32 sunit; /* stripe unit, fsblocks */
__u32 swidth; /* stripe width, fsblocks */
__s32 version; /* structure version */
__u32 flags; /* superblock version flags */
__u32 logsectsize; /* log sector size, bytes */
__u32 rtsectsize; /* realtime sector size, bytes */
__u32 dirblocksize; /* directory block size, bytes */
} xfs_fsop_geom_v1_t;
/*
* Output for XFS_IOC_FSGEOMETRY
*/
typedef struct xfs_fsop_geom {
__u32 blocksize; /* filesystem (data) block size */
__u32 rtextsize; /* realtime extent size */
__u32 agblocks; /* fsblocks in an AG */
__u32 agcount; /* number of allocation groups */
__u32 logblocks; /* fsblocks in the log */
__u32 sectsize; /* (data) sector size, bytes */
__u32 inodesize; /* inode size in bytes */
__u32 imaxpct; /* max allowed inode space(%) */
__u64 datablocks; /* fsblocks in data subvolume */
__u64 rtblocks; /* fsblocks in realtime subvol */
__u64 rtextents; /* rt extents in realtime subvol*/
__u64 logstart; /* starting fsblock of the log */
unsigned char uuid[16]; /* unique id of the filesystem */
__u32 sunit; /* stripe unit, fsblocks */
__u32 swidth; /* stripe width, fsblocks */
__s32 version; /* structure version */
__u32 flags; /* superblock version flags */
__u32 logsectsize; /* log sector size, bytes */
__u32 rtsectsize; /* realtime sector size, bytes */
__u32 dirblocksize; /* directory block size, bytes */
__u32 logsunit; /* log stripe unit, bytes */
} xfs_fsop_geom_t;
/* Output for XFS_FS_COUNTS */
typedef struct xfs_fsop_counts {
__u64 freedata; /* free data section blocks */
__u64 freertx; /* free rt extents */
__u64 freeino; /* free inodes */
__u64 allocino; /* total allocated inodes */
} xfs_fsop_counts_t;
/* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
typedef struct xfs_fsop_resblks {
__u64 resblks;
__u64 resblks_avail;
} xfs_fsop_resblks_t;
#define XFS_FSOP_GEOM_VERSION 0
#define XFS_FSOP_GEOM_FLAGS_ATTR 0x0001 /* attributes in use */
#define XFS_FSOP_GEOM_FLAGS_NLINK 0x0002 /* 32-bit nlink values */
#define XFS_FSOP_GEOM_FLAGS_QUOTA 0x0004 /* quotas enabled */
#define XFS_FSOP_GEOM_FLAGS_IALIGN 0x0008 /* inode alignment */
#define XFS_FSOP_GEOM_FLAGS_DALIGN 0x0010 /* large data alignment */
#define XFS_FSOP_GEOM_FLAGS_SHARED 0x0020 /* read-only shared */
#define XFS_FSOP_GEOM_FLAGS_EXTFLG 0x0040 /* special extent flag */
#define XFS_FSOP_GEOM_FLAGS_DIRV2 0x0080 /* directory version 2 */
#define XFS_FSOP_GEOM_FLAGS_LOGV2 0x0100 /* log format version 2 */
#define XFS_FSOP_GEOM_FLAGS_SECTOR 0x0200 /* sector sizes >1BB */
/*
* Minimum and maximum sizes need for growth checks
*/
#define XFS_MIN_AG_BLOCKS 64
#define XFS_MIN_LOG_BLOCKS 512
#define XFS_MAX_LOG_BLOCKS (64 * 1024)
#define XFS_MIN_LOG_BYTES (256 * 1024)
#define XFS_MAX_LOG_BYTES (128 * 1024 * 1024)
/*
* Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
*/
typedef struct xfs_growfs_data {
__u64 newblocks; /* new data subvol size, fsblocks */
__u32 imaxpct; /* new inode space percentage limit */
} xfs_growfs_data_t;
typedef struct xfs_growfs_log {
__u32 newblocks; /* new log size, fsblocks */
__u32 isint; /* 1 if new log is internal */
} xfs_growfs_log_t;
typedef struct xfs_growfs_rt {
__u64 newblocks; /* new realtime size, fsblocks */
__u32 extsize; /* new realtime extent size, fsblocks */
} xfs_growfs_rt_t;
/*
* Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
*/
typedef struct xfs_bstime {
time_t tv_sec; /* seconds */
__s32 tv_nsec; /* and nanoseconds */
} xfs_bstime_t;
typedef struct xfs_bstat {
__u64 bs_ino; /* inode number */
__u16 bs_mode; /* type and mode */
__u16 bs_nlink; /* number of links */
__u32 bs_uid; /* user id */
__u32 bs_gid; /* group id */
__u32 bs_rdev; /* device value */
__s32 bs_blksize; /* block size */
__s64 bs_size; /* file size */
xfs_bstime_t bs_atime; /* access time */
xfs_bstime_t bs_mtime; /* modify time */
xfs_bstime_t bs_ctime; /* inode change time */
int64_t bs_blocks; /* number of blocks */
__u32 bs_xflags; /* extended flags */
__s32 bs_extsize; /* extent size */
__s32 bs_extents; /* number of extents */
__u32 bs_gen; /* generation count */
__u16 bs_projid; /* project id */
unsigned char bs_pad[14]; /* pad space, unused */
__u32 bs_dmevmask; /* DMIG event mask */
__u16 bs_dmstate; /* DMIG state info */
__u16 bs_aextents; /* attribute number of extents */
} xfs_bstat_t;
/*
* The user-level BulkStat Request interface structure.
*/
typedef struct xfs_fsop_bulkreq {
__u64 __user *lastip; /* last inode # pointer */
__s32 icount; /* count of entries in buffer */
void __user *ubuffer;/* user buffer for inode desc. */
__s32 __user *ocount; /* output count pointer */
} xfs_fsop_bulkreq_t;
/*
* Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
*/
typedef struct xfs_inogrp {
__u64 xi_startino; /* starting inode number */
__s32 xi_alloccount; /* # bits set in allocmask */
__u64 xi_allocmask; /* mask of allocated inodes */
} xfs_inogrp_t;
/*
* Error injection.
*/
typedef struct xfs_error_injection {
__s32 fd;
__s32 errtag;
} xfs_error_injection_t;
/*
* The user-level Handle Request interface structure.
*/
typedef struct xfs_fsop_handlereq {
__u32 fd; /* fd for FD_TO_HANDLE */
void __user *path; /* user pathname */
__u32 oflags; /* open flags */
void __user *ihandle;/* user supplied handle */
__u32 ihandlen; /* user supplied length */
void __user *ohandle;/* user buffer for handle */
__u32 __user *ohandlen;/* user buffer length */
} xfs_fsop_handlereq_t;
/*
* Compound structures for passing args through Handle Request interfaces
* xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
* - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
* XFS_IOC_ATTRMULTI_BY_HANDLE
*/
typedef struct xfs_fsop_setdm_handlereq {
struct xfs_fsop_handlereq hreq; /* handle information */
struct fsdmidata __user *data; /* DMAPI data */
} xfs_fsop_setdm_handlereq_t;
typedef struct xfs_attrlist_cursor {
__u32 opaque[4];
} xfs_attrlist_cursor_t;
typedef struct xfs_fsop_attrlist_handlereq {
struct xfs_fsop_handlereq hreq; /* handle interface structure */
struct xfs_attrlist_cursor pos; /* opaque cookie, list offset */
__u32 flags; /* which namespace to use */
__u32 buflen; /* length of buffer supplied */
void __user *buffer; /* returned names */
} xfs_fsop_attrlist_handlereq_t;
typedef struct xfs_attr_multiop {
__u32 am_opcode;
__s32 am_error;
void __user *am_attrname;
void __user *am_attrvalue;
__u32 am_length;
__u32 am_flags;
} xfs_attr_multiop_t;
typedef struct xfs_fsop_attrmulti_handlereq {
struct xfs_fsop_handlereq hreq; /* handle interface structure */
__u32 opcount;/* count of following multiop */
struct xfs_attr_multiop __user *ops; /* attr_multi data */
} xfs_fsop_attrmulti_handlereq_t;
/*
* per machine unique filesystem identifier types.
*/
typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
#ifndef HAVE_FID
#define MAXFIDSZ 46
typedef struct fid {
__u16 fid_len; /* length of data in bytes */
unsigned char fid_data[MAXFIDSZ]; /* data (fid_len worth) */
} fid_t;
#endif
typedef struct xfs_fid {
__u16 xfs_fid_len; /* length of remainder */
__u16 xfs_fid_pad;
__u32 xfs_fid_gen; /* generation number */
__u64 xfs_fid_ino; /* 64 bits inode number */
} xfs_fid_t;
typedef struct xfs_fid2 {
__u16 fid_len; /* length of remainder */
__u16 fid_pad; /* padding, must be zero */
__u32 fid_gen; /* generation number */
__u64 fid_ino; /* inode number */
} xfs_fid2_t;
typedef struct xfs_handle {
union {
__s64 align; /* force alignment of ha_fid */
xfs_fsid_t _ha_fsid; /* unique file system identifier */
} ha_u;
xfs_fid_t ha_fid; /* file system specific file ID */
} xfs_handle_t;
#define ha_fsid ha_u._ha_fsid
#define XFS_HSIZE(handle) (((char *) &(handle).ha_fid.xfs_fid_pad \
- (char *) &(handle)) \
+ (handle).ha_fid.xfs_fid_len)
#define XFS_HANDLE_CMP(h1, h2) memcmp(h1, h2, sizeof(xfs_handle_t))
#define FSHSIZE sizeof(fsid_t)
/*
* Flags for going down operation
*/
#define XFS_FSOP_GOING_FLAGS_DEFAULT 0x0 /* going down */
#define XFS_FSOP_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
/*
* ioctl commands that are used by Linux filesystems
*/
#define XFS_IOC_GETXFLAGS _IOR('f', 1, long)
#define XFS_IOC_SETXFLAGS _IOW('f', 2, long)
#define XFS_IOC_GETVERSION _IOR('v', 1, long)
/*
* ioctl commands that replace IRIX fcntl()'s
* For 'documentation' purposed more than anything else,
* the "cmd #" field reflects the IRIX fcntl number.
*/
#define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
#define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
#define XFS_IOC_DIOINFO _IOR ('X', 30, struct dioattr)
#define XFS_IOC_FSGETXATTR _IOR ('X', 31, struct fsxattr)
#define XFS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr)
#define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
#define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
#define XFS_IOC_GETBMAP _IOWR('X', 38, struct getbmap)
#define XFS_IOC_FSSETDM _IOW ('X', 39, struct fsdmidata)
#define XFS_IOC_RESVSP _IOW ('X', 40, struct xfs_flock64)
#define XFS_IOC_UNRESVSP _IOW ('X', 41, struct xfs_flock64)
#define XFS_IOC_RESVSP64 _IOW ('X', 42, struct xfs_flock64)
#define XFS_IOC_UNRESVSP64 _IOW ('X', 43, struct xfs_flock64)
#define XFS_IOC_GETBMAPA _IOWR('X', 44, struct getbmap)
#define XFS_IOC_FSGETXATTRA _IOR ('X', 45, struct fsxattr)
/* XFS_IOC_SETBIOSIZE ---- deprecated 46 */
/* XFS_IOC_GETBIOSIZE ---- deprecated 47 */
#define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap)
/*
* ioctl commands that replace IRIX syssgi()'s
*/
#define XFS_IOC_FSGEOMETRY_V1 _IOR ('X', 100, struct xfs_fsop_geom_v1)
#define XFS_IOC_FSBULKSTAT _IOWR('X', 101, struct xfs_fsop_bulkreq)
#define XFS_IOC_FSBULKSTAT_SINGLE _IOWR('X', 102, struct xfs_fsop_bulkreq)
#define XFS_IOC_FSINUMBERS _IOWR('X', 103, struct xfs_fsop_bulkreq)
#define XFS_IOC_PATH_TO_FSHANDLE _IOWR('X', 104, struct xfs_fsop_handlereq)
#define XFS_IOC_PATH_TO_HANDLE _IOWR('X', 105, struct xfs_fsop_handlereq)
#define XFS_IOC_FD_TO_HANDLE _IOWR('X', 106, struct xfs_fsop_handlereq)
#define XFS_IOC_OPEN_BY_HANDLE _IOWR('X', 107, struct xfs_fsop_handlereq)
#define XFS_IOC_READLINK_BY_HANDLE _IOWR('X', 108, struct xfs_fsop_handlereq)
#define XFS_IOC_SWAPEXT _IOWR('X', 109, struct xfs_swapext)
#define XFS_IOC_FSGROWFSDATA _IOW ('X', 110, struct xfs_growfs_data)
#define XFS_IOC_FSGROWFSLOG _IOW ('X', 111, struct xfs_growfs_log)
#define XFS_IOC_FSGROWFSRT _IOW ('X', 112, struct xfs_growfs_rt)
#define XFS_IOC_FSCOUNTS _IOR ('X', 113, struct xfs_fsop_counts)
#define XFS_IOC_SET_RESBLKS _IOWR('X', 114, struct xfs_fsop_resblks)
#define XFS_IOC_GET_RESBLKS _IOR ('X', 115, struct xfs_fsop_resblks)
#define XFS_IOC_ERROR_INJECTION _IOW ('X', 116, struct xfs_error_injection)
#define XFS_IOC_ERROR_CLEARALL _IOW ('X', 117, struct xfs_error_injection)
/* XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118 */
#define XFS_IOC_FREEZE _IOWR('X', 119, int)
#define XFS_IOC_THAW _IOWR('X', 120, int)
#define XFS_IOC_FSSETDM_BY_HANDLE _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
#define XFS_IOC_ATTRLIST_BY_HANDLE _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
#define XFS_IOC_ATTRMULTI_BY_HANDLE _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
#define XFS_IOC_FSGEOMETRY _IOR ('X', 124, struct xfs_fsop_geom)
#define XFS_IOC_GOINGDOWN _IOR ('X', 125, __uint32_t)
/* XFS_IOC_GETFSUUID ---------- deprecated 140 */
#ifndef HAVE_BBMACROS
/*
* Block I/O parameterization. A basic block (BB) is the lowest size of
* filesystem allocation, and must equal 512. Length units given to bio
* routines are in BB's.
*/
#define BBSHIFT 9
#define BBSIZE (1<<BBSHIFT)
#define BBMASK (BBSIZE-1)
#define BTOBB(bytes) (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
#define BTOBBT(bytes) ((__u64)(bytes) >> BBSHIFT)
#define BBTOB(bbs) ((bbs) << BBSHIFT)
#endif
#endif /* __XFS_FS_H__ */
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