LXR linux/fs/xfs/xfs

   1/*
   2 * Copyright (c) 1995-2005 Silicon Graphics, Inc.
   3 * All Rights Reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU Lesser General Public License
   7 * as published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it would be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU Lesser General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU Lesser General Public License
  15 * along with this program; if not, write the Free Software Foundation,
  16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18#ifndef __XFS_FS_H__
  19#define __XFS_FS_H__
  20
  21/*
  22 * SGI's XFS filesystem's major stuff (constants, structures)
  23 */
  24
  25/*
  26 * Direct I/O attribute record used with XFS_IOC_DIOINFO
  27 * d_miniosz is the min xfer size, xfer size multiple and file seek offset
  28 * alignment.
  29 */
  30#ifndef HAVE_DIOATTR
  31struct dioattr {
  32        __u32           d_mem;          /* data buffer memory alignment */
  33        __u32           d_miniosz;      /* min xfer size                */
  34        __u32           d_maxiosz;      /* max xfer size                */
  35};
  36#endif
  37
  38/*
  39 * Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR.
  40 */
  41#ifndef HAVE_FSXATTR
  42struct fsxattr {
  43        __u32           fsx_xflags;     /* xflags field value (get/set) */
  44        __u32           fsx_extsize;    /* extsize field value (get/set)*/
  45        __u32           fsx_nextents;   /* nextents field value (get)   */
  46        __u32           fsx_projid;     /* project identifier (get/set) */
  47        unsigned char   fsx_pad[12];
  48};
  49#endif
  50
  51/*
  52 * Flags for the bs_xflags/fsx_xflags field
  53 * There should be a one-to-one correspondence between these flags and the
  54 * XFS_DIFLAG_s.
  55 */
  56#define XFS_XFLAG_REALTIME      0x00000001      /* data in realtime volume */
  57#define XFS_XFLAG_PREALLOC      0x00000002      /* preallocated file extents */
  58#define XFS_XFLAG_IMMUTABLE     0x00000008      /* file cannot be modified */
  59#define XFS_XFLAG_APPEND        0x00000010      /* all writes append */
  60#define XFS_XFLAG_SYNC          0x00000020      /* all writes synchronous */
  61#define XFS_XFLAG_NOATIME       0x00000040      /* do not update access time */
  62#define XFS_XFLAG_NODUMP        0x00000080      /* do not include in backups */
  63#define XFS_XFLAG_RTINHERIT     0x00000100      /* create with rt bit set */
  64#define XFS_XFLAG_PROJINHERIT   0x00000200      /* create with parents projid */
  65#define XFS_XFLAG_NOSYMLINKS    0x00000400      /* disallow symlink creation */
  66#define XFS_XFLAG_EXTSIZE       0x00000800      /* extent size allocator hint */
  67#define XFS_XFLAG_EXTSZINHERIT  0x00001000      /* inherit inode extent size */
  68#define XFS_XFLAG_NODEFRAG      0x00002000      /* do not defragment */
  69#define XFS_XFLAG_FILESTREAM    0x00004000      /* use filestream allocator */
  70#define XFS_XFLAG_HASATTR       0x80000000      /* no DIFLAG for this   */
  71
  72/*
  73 * Structure for XFS_IOC_GETBMAP.
  74 * On input, fill in bmv_offset and bmv_length of the first structure
  75 * to indicate the area of interest in the file, and bmv_entries with
  76 * the number of array elements given back.  The first structure is
  77 * updated on return to give the offset and length for the next call.
  78 */
  79#ifndef HAVE_GETBMAP
  80struct getbmap {
  81        __s64           bmv_offset;     /* file offset of segment in blocks */
  82        __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  83        __s64           bmv_length;     /* length of segment, blocks        */
  84        __s32           bmv_count;      /* # of entries in array incl. 1st  */
  85        __s32           bmv_entries;    /* # of entries filled in (output)  */
  86};
  87#endif
  88
  89/*
  90 *      Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries
  91 *      are used exactly as in the getbmap structure.  The getbmapx structure
  92 *      has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
  93 *      is only used for the first structure.  It contains input flags
  94 *      specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
  95 *      in by the XFS_IOC_GETBMAPX command for each returned structure after
  96 *      the first.
  97 */
  98#ifndef HAVE_GETBMAPX
  99struct getbmapx {
 100        __s64           bmv_offset;     /* file offset of segment in blocks */
 101        __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
 102        __s64           bmv_length;     /* length of segment, blocks        */
 103        __s32           bmv_count;      /* # of entries in array incl. 1st  */
 104        __s32           bmv_entries;    /* # of entries filled in (output). */
 105        __s32           bmv_iflags;     /* input flags (1st structure)      */
 106        __s32           bmv_oflags;     /* output flags (after 1st structure)*/
 107        __s32           bmv_unused1;    /* future use                       */
 108        __s32           bmv_unused2;    /* future use                       */
 109};
 110#endif
 111
 112/*      bmv_iflags values - set by XFS_IOC_GETBMAPX caller.     */
 113#define BMV_IF_ATTRFORK         0x1     /* return attr fork rather than data */
 114#define BMV_IF_NO_DMAPI_READ    0x2     /* Do not generate DMAPI read event  */
 115#define BMV_IF_PREALLOC         0x4     /* rtn status BMV_OF_PREALLOC if req */
 116#define BMV_IF_DELALLOC         0x8     /* rtn status BMV_OF_DELALLOC if req */
 117#define BMV_IF_NO_HOLES         0x10    /* Do not return holes */
 118#define BMV_IF_VALID    \
 119        (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \
 120         BMV_IF_DELALLOC|BMV_IF_NO_HOLES)
 121
 122/*      bmv_oflags values - returned for each non-header segment */
 123#define BMV_OF_PREALLOC         0x1     /* segment = unwritten pre-allocation */
 124#define BMV_OF_DELALLOC         0x2     /* segment = delayed allocation */
 125#define BMV_OF_LAST             0x4     /* segment is the last in the file */
 126
 127/*
 128 * Structure for XFS_IOC_FSSETDM.
 129 * For use by backup and restore programs to set the XFS on-disk inode
 130 * fields di_dmevmask and di_dmstate.  These must be set to exactly and
 131 * only values previously obtained via xfs_bulkstat!  (Specifically the
 132 * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
 133 */
 134#ifndef HAVE_FSDMIDATA
 135struct fsdmidata {
 136        __u32           fsd_dmevmask;   /* corresponds to di_dmevmask */
 137        __u16           fsd_padding;
 138        __u16           fsd_dmstate;    /* corresponds to di_dmstate  */
 139};
 140#endif
 141
 142/*
 143 * File segment locking set data type for 64 bit access.
 144 * Also used for all the RESV/FREE interfaces.
 145 */
 146typedef struct xfs_flock64 {
 147        __s16           l_type;
 148        __s16           l_whence;
 149        __s64           l_start;
 150        __s64           l_len;          /* len == 0 means until end of file */
 151        __s32           l_sysid;
 152        __u32           l_pid;
 153        __s32           l_pad[4];       /* reserve area                     */
 154} xfs_flock64_t;
 155
 156/*
 157 * Output for XFS_IOC_FSGEOMETRY_V1
 158 */
 159typedef struct xfs_fsop_geom_v1 {
 160        __u32           blocksize;      /* filesystem (data) block size */
 161        __u32           rtextsize;      /* realtime extent size         */
 162        __u32           agblocks;       /* fsblocks in an AG            */
 163        __u32           agcount;        /* number of allocation groups  */
 164        __u32           logblocks;      /* fsblocks in the log          */
 165        __u32           sectsize;       /* (data) sector size, bytes    */
 166        __u32           inodesize;      /* inode size in bytes          */
 167        __u32           imaxpct;        /* max allowed inode space(%)   */
 168        __u64           datablocks;     /* fsblocks in data subvolume   */
 169        __u64           rtblocks;       /* fsblocks in realtime subvol  */
 170        __u64           rtextents;      /* rt extents in realtime subvol*/
 171        __u64           logstart;       /* starting fsblock of the log  */
 172        unsigned char   uuid[16];       /* unique id of the filesystem  */
 173        __u32           sunit;          /* stripe unit, fsblocks        */
 174        __u32           swidth;         /* stripe width, fsblocks       */
 175        __s32           version;        /* structure version            */
 176        __u32           flags;          /* superblock version flags     */
 177        __u32           logsectsize;    /* log sector size, bytes       */
 178        __u32           rtsectsize;     /* realtime sector size, bytes  */
 179        __u32           dirblocksize;   /* directory block size, bytes  */
 180} xfs_fsop_geom_v1_t;
 181
 182/*
 183 * Output for XFS_IOC_FSGEOMETRY
 184 */
 185typedef struct xfs_fsop_geom {
 186        __u32           blocksize;      /* filesystem (data) block size */
 187        __u32           rtextsize;      /* realtime extent size         */
 188        __u32           agblocks;       /* fsblocks in an AG            */
 189        __u32           agcount;        /* number of allocation groups  */
 190        __u32           logblocks;      /* fsblocks in the log          */
 191        __u32           sectsize;       /* (data) sector size, bytes    */
 192        __u32           inodesize;      /* inode size in bytes          */
 193        __u32           imaxpct;        /* max allowed inode space(%)   */
 194        __u64           datablocks;     /* fsblocks in data subvolume   */
 195        __u64           rtblocks;       /* fsblocks in realtime subvol  */
 196        __u64           rtextents;      /* rt extents in realtime subvol*/
 197        __u64           logstart;       /* starting fsblock of the log  */
 198        unsigned char   uuid[16];       /* unique id of the filesystem  */
 199        __u32           sunit;          /* stripe unit, fsblocks        */
 200        __u32           swidth;         /* stripe width, fsblocks       */
 201        __s32           version;        /* structure version            */
 202        __u32           flags;          /* superblock version flags     */
 203        __u32           logsectsize;    /* log sector size, bytes       */
 204        __u32           rtsectsize;     /* realtime sector size, bytes  */
 205        __u32           dirblocksize;   /* directory block size, bytes  */
 206        __u32           logsunit;       /* log stripe unit, bytes */
 207} xfs_fsop_geom_t;
 208
 209/* Output for XFS_FS_COUNTS */
 210typedef struct xfs_fsop_counts {
 211        __u64   freedata;       /* free data section blocks */
 212        __u64   freertx;        /* free rt extents */
 213        __u64   freeino;        /* free inodes */
 214        __u64   allocino;       /* total allocated inodes */
 215} xfs_fsop_counts_t;
 216
 217/* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
 218typedef struct xfs_fsop_resblks {
 219        __u64  resblks;
 220        __u64  resblks_avail;
 221} xfs_fsop_resblks_t;
 222
 223#define XFS_FSOP_GEOM_VERSION   0
 224
 225#define XFS_FSOP_GEOM_FLAGS_ATTR        0x0001  /* attributes in use    */
 226#define XFS_FSOP_GEOM_FLAGS_NLINK       0x0002  /* 32-bit nlink values  */
 227#define XFS_FSOP_GEOM_FLAGS_QUOTA       0x0004  /* quotas enabled       */
 228#define XFS_FSOP_GEOM_FLAGS_IALIGN      0x0008  /* inode alignment      */
 229#define XFS_FSOP_GEOM_FLAGS_DALIGN      0x0010  /* large data alignment */
 230#define XFS_FSOP_GEOM_FLAGS_SHARED      0x0020  /* read-only shared     */
 231#define XFS_FSOP_GEOM_FLAGS_EXTFLG      0x0040  /* special extent flag  */
 232#define XFS_FSOP_GEOM_FLAGS_DIRV2       0x0080  /* directory version 2  */
 233#define XFS_FSOP_GEOM_FLAGS_LOGV2       0x0100  /* log format version 2 */
 234#define XFS_FSOP_GEOM_FLAGS_SECTOR      0x0200  /* sector sizes >1BB    */
 235#define XFS_FSOP_GEOM_FLAGS_ATTR2       0x0400  /* inline attributes rework */
 236#define XFS_FSOP_GEOM_FLAGS_PROJID32    0x0800  /* 32-bit project IDs   */
 237#define XFS_FSOP_GEOM_FLAGS_DIRV2CI     0x1000  /* ASCII only CI names  */
 238#define XFS_FSOP_GEOM_FLAGS_LAZYSB      0x4000  /* lazy superblock counters */
 239#define XFS_FSOP_GEOM_FLAGS_V5SB        0x8000  /* version 5 superblock */
 240
 241
 242/*
 243 * Minimum and maximum sizes need for growth checks.
 244 *
 245 * Block counts are in units of filesystem blocks, not basic blocks.
 246 */
 247#define XFS_MIN_AG_BLOCKS       64
 248#define XFS_MIN_LOG_BLOCKS      512ULL
 249#define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 250#define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 251
 252/* keep the maximum size under 2^31 by a small amount */
 253#define XFS_MAX_LOG_BYTES \
 254        ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 255
 256/* Used for sanity checks on superblock */
 257#define XFS_MAX_DBLOCKS(s) ((xfs_drfsbno_t)(s)->sb_agcount * (s)->sb_agblocks)
 258#define XFS_MIN_DBLOCKS(s) ((xfs_drfsbno_t)((s)->sb_agcount - 1) *      \
 259                         (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 260
 261/*
 262 * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 263 */
 264typedef struct xfs_growfs_data {
 265        __u64           newblocks;      /* new data subvol size, fsblocks */
 266        __u32           imaxpct;        /* new inode space percentage limit */
 267} xfs_growfs_data_t;
 268
 269typedef struct xfs_growfs_log {
 270        __u32           newblocks;      /* new log size, fsblocks */
 271        __u32           isint;          /* 1 if new log is internal */
 272} xfs_growfs_log_t;
 273
 274typedef struct xfs_growfs_rt {
 275        __u64           newblocks;      /* new realtime size, fsblocks */
 276        __u32           extsize;        /* new realtime extent size, fsblocks */
 277} xfs_growfs_rt_t;
 278
 279
 280/*
 281 * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 282 */
 283typedef struct xfs_bstime {
 284        time_t          tv_sec;         /* seconds              */
 285        __s32           tv_nsec;        /* and nanoseconds      */
 286} xfs_bstime_t;
 287
 288typedef struct xfs_bstat {
 289        __u64           bs_ino;         /* inode number                 */
 290        __u16           bs_mode;        /* type and mode                */
 291        __u16           bs_nlink;       /* number of links              */
 292        __u32           bs_uid;         /* user id                      */
 293        __u32           bs_gid;         /* group id                     */
 294        __u32           bs_rdev;        /* device value                 */
 295        __s32           bs_blksize;     /* block size                   */
 296        __s64           bs_size;        /* file size                    */
 297        xfs_bstime_t    bs_atime;       /* access time                  */
 298        xfs_bstime_t    bs_mtime;       /* modify time                  */
 299        xfs_bstime_t    bs_ctime;       /* inode change time            */
 300        int64_t         bs_blocks;      /* number of blocks             */
 301        __u32           bs_xflags;      /* extended flags               */
 302        __s32           bs_extsize;     /* extent size                  */
 303        __s32           bs_extents;     /* number of extents            */
 304        __u32           bs_gen;         /* generation count             */
 305        __u16           bs_projid_lo;   /* lower part of project id     */
 306#define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 307        __u16           bs_forkoff;     /* inode fork offset in bytes   */
 308        __u16           bs_projid_hi;   /* higher part of project id    */
 309        unsigned char   bs_pad[10];     /* pad space, unused            */
 310        __u32           bs_dmevmask;    /* DMIG event mask              */
 311        __u16           bs_dmstate;     /* DMIG state info              */
 312        __u16           bs_aextents;    /* attribute number of extents  */
 313} xfs_bstat_t;
 314
 315/*
 316 * Project quota id helpers (previously projid was 16bit only
 317 * and using two 16bit values to hold new 32bit projid was choosen
 318 * to retain compatibility with "old" filesystems).
 319 */
 320static inline __uint32_t
 321bstat_get_projid(struct xfs_bstat *bs)
 322{
 323        return (__uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 324}
 325
 326/*
 327 * The user-level BulkStat Request interface structure.
 328 */
 329typedef struct xfs_fsop_bulkreq {
 330        __u64           __user *lastip; /* last inode # pointer         */
 331        __s32           icount;         /* count of entries in buffer   */
 332        void            __user *ubuffer;/* user buffer for inode desc.  */
 333        __s32           __user *ocount; /* output count pointer         */
 334} xfs_fsop_bulkreq_t;
 335
 336
 337/*
 338 * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 339 */
 340typedef struct xfs_inogrp {
 341        __u64           xi_startino;    /* starting inode number        */
 342        __s32           xi_alloccount;  /* # bits set in allocmask      */
 343        __u64           xi_allocmask;   /* mask of allocated inodes     */
 344} xfs_inogrp_t;
 345
 346
 347/*
 348 * Error injection.
 349 */
 350typedef struct xfs_error_injection {
 351        __s32           fd;
 352        __s32           errtag;
 353} xfs_error_injection_t;
 354
 355
 356/*
 357 * Speculative preallocation trimming.
 358 */
 359#define XFS_EOFBLOCKS_VERSION           1
 360struct xfs_fs_eofblocks {
 361        __u32           eof_version;
 362        __u32           eof_flags;
 363        uid_t           eof_uid;
 364        gid_t           eof_gid;
 365        prid_t          eof_prid;
 366        __u32           pad32;
 367        __u64           eof_min_file_size;
 368        __u64           pad64[12];
 369};
 370
 371/* eof_flags values */
 372#define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 373#define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 374#define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 375#define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 376#define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 377#define XFS_EOF_FLAGS_VALID     \
 378        (XFS_EOF_FLAGS_SYNC |   \
 379         XFS_EOF_FLAGS_UID |    \
 380         XFS_EOF_FLAGS_GID |    \
 381         XFS_EOF_FLAGS_PRID |   \
 382         XFS_EOF_FLAGS_MINFILESIZE)
 383
 384
 385/*
 386 * The user-level Handle Request interface structure.
 387 */
 388typedef struct xfs_fsop_handlereq {
 389        __u32           fd;             /* fd for FD_TO_HANDLE          */
 390        void            __user *path;   /* user pathname                */
 391        __u32           oflags;         /* open flags                   */
 392        void            __user *ihandle;/* user supplied handle         */
 393        __u32           ihandlen;       /* user supplied length         */
 394        void            __user *ohandle;/* user buffer for handle       */
 395        __u32           __user *ohandlen;/* user buffer length          */
 396} xfs_fsop_handlereq_t;
 397
 398/*
 399 * Compound structures for passing args through Handle Request interfaces
 400 * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 401 * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 402 *           XFS_IOC_ATTRMULTI_BY_HANDLE
 403 */
 404
 405typedef struct xfs_fsop_setdm_handlereq {
 406        struct xfs_fsop_handlereq       hreq;   /* handle information   */
 407        struct fsdmidata                __user *data;   /* DMAPI data   */
 408} xfs_fsop_setdm_handlereq_t;
 409
 410typedef struct xfs_attrlist_cursor {
 411        __u32           opaque[4];
 412} xfs_attrlist_cursor_t;
 413
 414typedef struct xfs_fsop_attrlist_handlereq {
 415        struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 416        struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 417        __u32                           flags;  /* which namespace to use */
 418        __u32                           buflen; /* length of buffer supplied */
 419        void                            __user *buffer; /* returned names */
 420} xfs_fsop_attrlist_handlereq_t;
 421
 422typedef struct xfs_attr_multiop {
 423        __u32           am_opcode;
 424#define ATTR_OP_GET     1       /* return the indicated attr's value */
 425#define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 426#define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 427        __s32           am_error;
 428        void            __user *am_attrname;
 429        void            __user *am_attrvalue;
 430        __u32           am_length;
 431        __u32           am_flags;
 432} xfs_attr_multiop_t;
 433
 434typedef struct xfs_fsop_attrmulti_handlereq {
 435        struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 436        __u32                           opcount;/* count of following multiop */
 437        struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 438} xfs_fsop_attrmulti_handlereq_t;
 439
 440/*
 441 * per machine unique filesystem identifier types.
 442 */
 443typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 444
 445typedef struct xfs_fid {
 446        __u16   fid_len;                /* length of remainder  */
 447        __u16   fid_pad;
 448        __u32   fid_gen;                /* generation number    */
 449        __u64   fid_ino;                /* 64 bits inode number */
 450} xfs_fid_t;
 451
 452typedef struct xfs_handle {
 453        union {
 454                __s64       align;      /* force alignment of ha_fid     */
 455                xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 456        } ha_u;
 457        xfs_fid_t       ha_fid;         /* file system specific file ID  */
 458} xfs_handle_t;
 459#define ha_fsid ha_u._ha_fsid
 460
 461#define XFS_HSIZE(handle)       (((char *) &(handle).ha_fid.fid_pad      \
 462                                 - (char *) &(handle))                    \
 463                                 + (handle).ha_fid.fid_len)
 464
 465/*
 466 * Structure passed to XFS_IOC_SWAPEXT
 467 */
 468typedef struct xfs_swapext
 469{
 470        __int64_t       sx_version;     /* version */
 471#define XFS_SX_VERSION          0
 472        __int64_t       sx_fdtarget;    /* fd of target file */
 473        __int64_t       sx_fdtmp;       /* fd of tmp file */
 474        xfs_off_t       sx_offset;      /* offset into file */
 475        xfs_off_t       sx_length;      /* leng from offset */
 476        char            sx_pad[16];     /* pad space, unused */
 477        xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 478} xfs_swapext_t;
 479
 480/*
 481 * Flags for going down operation
 482 */
 483#define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 484#define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 485#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 486
 487/*
 488 * ioctl commands that are used by Linux filesystems
 489 */
 490#define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 491#define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 492#define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 493
 494/*
 495 * ioctl commands that replace IRIX fcntl()'s
 496 * For 'documentation' purposed more than anything else,
 497 * the "cmd #" field reflects the IRIX fcntl number.
 498 */
 499#define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 500#define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 501#define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 502#define XFS_IOC_FSGETXATTR      _IOR ('X', 31, struct fsxattr)
 503#define XFS_IOC_FSSETXATTR      _IOW ('X', 32, struct fsxattr)
 504#define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 505#define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 506#define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 507#define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 508#define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 509#define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 510#define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 511#define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 512#define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 513#define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 514/*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 515/*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 516#define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 517#define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 518#define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 519
 520/*
 521 * ioctl commands that replace IRIX syssgi()'s
 522 */
 523#define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 524#define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 525#define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 526#define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 527#define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 528#define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 529#define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 530#define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 531#define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 532#define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 533#define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 534#define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 535#define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 536#define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 537#define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 538#define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 539#define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 540#define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 541/*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 542
 543/*      XFS_IOC_FREEZE            -- FIFREEZE   119      */
 544/*      XFS_IOC_THAW              -- FITHAW     120      */
 545#ifndef FIFREEZE
 546#define XFS_IOC_FREEZE               _IOWR('X', 119, int)
 547#define XFS_IOC_THAW                 _IOWR('X', 120, int)
 548#endif
 549
 550#define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 551#define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 552#define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 553#define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 554#define XFS_IOC_GOINGDOWN            _IOR ('X', 125, __uint32_t)
 555/*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 556
 557
 558#ifndef HAVE_BBMACROS
 559/*
 560 * Block I/O parameterization.  A basic block (BB) is the lowest size of
 561 * filesystem allocation, and must equal 512.  Length units given to bio
 562 * routines are in BB's.
 563 */
 564#define BBSHIFT         9
 565#define BBSIZE          (1<<BBSHIFT)
 566#define BBMASK          (BBSIZE-1)
 567#define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 568#define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 569#define BBTOB(bbs)      ((bbs) << BBSHIFT)
 570#endif
 571
 572#endif  /* __XFS_FS_H__ */
 573