LXR linux/fs/xfs/libxfs/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_GETBMAP.
  40 * On input, fill in bmv_offset and bmv_length of the first structure
  41 * to indicate the area of interest in the file, and bmv_entries with
  42 * the number of array elements given back.  The first structure is
  43 * updated on return to give the offset and length for the next call.
  44 */
  45#ifndef HAVE_GETBMAP
  46struct getbmap {
  47        __s64           bmv_offset;     /* file offset of segment in blocks */
  48        __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  49        __s64           bmv_length;     /* length of segment, blocks        */
  50        __s32           bmv_count;      /* # of entries in array incl. 1st  */
  51        __s32           bmv_entries;    /* # of entries filled in (output)  */
  52};
  53#endif
  54
  55/*
  56 *      Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries
  57 *      are used exactly as in the getbmap structure.  The getbmapx structure
  58 *      has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
  59 *      is only used for the first structure.  It contains input flags
  60 *      specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
  61 *      in by the XFS_IOC_GETBMAPX command for each returned structure after
  62 *      the first.
  63 */
  64#ifndef HAVE_GETBMAPX
  65struct getbmapx {
  66        __s64           bmv_offset;     /* file offset of segment in blocks */
  67        __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  68        __s64           bmv_length;     /* length of segment, blocks        */
  69        __s32           bmv_count;      /* # of entries in array incl. 1st  */
  70        __s32           bmv_entries;    /* # of entries filled in (output). */
  71        __s32           bmv_iflags;     /* input flags (1st structure)      */
  72        __s32           bmv_oflags;     /* output flags (after 1st structure)*/
  73        __s32           bmv_unused1;    /* future use                       */
  74        __s32           bmv_unused2;    /* future use                       */
  75};
  76#endif
  77
  78/*      bmv_iflags values - set by XFS_IOC_GETBMAPX caller.     */
  79#define BMV_IF_ATTRFORK         0x1     /* return attr fork rather than data */
  80#define BMV_IF_NO_DMAPI_READ    0x2     /* Do not generate DMAPI read event  */
  81#define BMV_IF_PREALLOC         0x4     /* rtn status BMV_OF_PREALLOC if req */
  82#define BMV_IF_DELALLOC         0x8     /* rtn status BMV_OF_DELALLOC if req */
  83#define BMV_IF_NO_HOLES         0x10    /* Do not return holes */
  84#define BMV_IF_COWFORK          0x20    /* return CoW fork rather than data */
  85#define BMV_IF_VALID    \
  86        (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \
  87         BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)
  88
  89/*      bmv_oflags values - returned for each non-header segment */
  90#define BMV_OF_PREALLOC         0x1     /* segment = unwritten pre-allocation */
  91#define BMV_OF_DELALLOC         0x2     /* segment = delayed allocation */
  92#define BMV_OF_LAST             0x4     /* segment is the last in the file */
  93#define BMV_OF_SHARED           0x8     /* segment shared with another file */
  94
  95/*      fmr_owner special values for FS_IOC_GETFSMAP */
  96#define XFS_FMR_OWN_FREE        FMR_OWN_FREE      /* free space */
  97#define XFS_FMR_OWN_UNKNOWN     FMR_OWN_UNKNOWN   /* unknown owner */
  98#define XFS_FMR_OWN_FS          FMR_OWNER('X', 1) /* static fs metadata */
  99#define XFS_FMR_OWN_LOG         FMR_OWNER('X', 2) /* journalling log */
 100#define XFS_FMR_OWN_AG          FMR_OWNER('X', 3) /* per-AG metadata */
 101#define XFS_FMR_OWN_INOBT       FMR_OWNER('X', 4) /* inode btree blocks */
 102#define XFS_FMR_OWN_INODES      FMR_OWNER('X', 5) /* inodes */
 103#define XFS_FMR_OWN_REFC        FMR_OWNER('X', 6) /* refcount tree */
 104#define XFS_FMR_OWN_COW         FMR_OWNER('X', 7) /* cow staging */
 105#define XFS_FMR_OWN_DEFECTIVE   FMR_OWNER('X', 8) /* bad blocks */
 106
 107/*
 108 * Structure for XFS_IOC_FSSETDM.
 109 * For use by backup and restore programs to set the XFS on-disk inode
 110 * fields di_dmevmask and di_dmstate.  These must be set to exactly and
 111 * only values previously obtained via xfs_bulkstat!  (Specifically the
 112 * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
 113 */
 114#ifndef HAVE_FSDMIDATA
 115struct fsdmidata {
 116        __u32           fsd_dmevmask;   /* corresponds to di_dmevmask */
 117        __u16           fsd_padding;
 118        __u16           fsd_dmstate;    /* corresponds to di_dmstate  */
 119};
 120#endif
 121
 122/*
 123 * File segment locking set data type for 64 bit access.
 124 * Also used for all the RESV/FREE interfaces.
 125 */
 126typedef struct xfs_flock64 {
 127        __s16           l_type;
 128        __s16           l_whence;
 129        __s64           l_start;
 130        __s64           l_len;          /* len == 0 means until end of file */
 131        __s32           l_sysid;
 132        __u32           l_pid;
 133        __s32           l_pad[4];       /* reserve area                     */
 134} xfs_flock64_t;
 135
 136/*
 137 * Output for XFS_IOC_FSGEOMETRY_V1
 138 */
 139typedef struct xfs_fsop_geom_v1 {
 140        __u32           blocksize;      /* filesystem (data) block size */
 141        __u32           rtextsize;      /* realtime extent size         */
 142        __u32           agblocks;       /* fsblocks in an AG            */
 143        __u32           agcount;        /* number of allocation groups  */
 144        __u32           logblocks;      /* fsblocks in the log          */
 145        __u32           sectsize;       /* (data) sector size, bytes    */
 146        __u32           inodesize;      /* inode size in bytes          */
 147        __u32           imaxpct;        /* max allowed inode space(%)   */
 148        __u64           datablocks;     /* fsblocks in data subvolume   */
 149        __u64           rtblocks;       /* fsblocks in realtime subvol  */
 150        __u64           rtextents;      /* rt extents in realtime subvol*/
 151        __u64           logstart;       /* starting fsblock of the log  */
 152        unsigned char   uuid[16];       /* unique id of the filesystem  */
 153        __u32           sunit;          /* stripe unit, fsblocks        */
 154        __u32           swidth;         /* stripe width, fsblocks       */
 155        __s32           version;        /* structure version            */
 156        __u32           flags;          /* superblock version flags     */
 157        __u32           logsectsize;    /* log sector size, bytes       */
 158        __u32           rtsectsize;     /* realtime sector size, bytes  */
 159        __u32           dirblocksize;   /* directory block size, bytes  */
 160} xfs_fsop_geom_v1_t;
 161
 162/*
 163 * Output for XFS_IOC_FSGEOMETRY
 164 */
 165typedef struct xfs_fsop_geom {
 166        __u32           blocksize;      /* filesystem (data) block size */
 167        __u32           rtextsize;      /* realtime extent size         */
 168        __u32           agblocks;       /* fsblocks in an AG            */
 169        __u32           agcount;        /* number of allocation groups  */
 170        __u32           logblocks;      /* fsblocks in the log          */
 171        __u32           sectsize;       /* (data) sector size, bytes    */
 172        __u32           inodesize;      /* inode size in bytes          */
 173        __u32           imaxpct;        /* max allowed inode space(%)   */
 174        __u64           datablocks;     /* fsblocks in data subvolume   */
 175        __u64           rtblocks;       /* fsblocks in realtime subvol  */
 176        __u64           rtextents;      /* rt extents in realtime subvol*/
 177        __u64           logstart;       /* starting fsblock of the log  */
 178        unsigned char   uuid[16];       /* unique id of the filesystem  */
 179        __u32           sunit;          /* stripe unit, fsblocks        */
 180        __u32           swidth;         /* stripe width, fsblocks       */
 181        __s32           version;        /* structure version            */
 182        __u32           flags;          /* superblock version flags     */
 183        __u32           logsectsize;    /* log sector size, bytes       */
 184        __u32           rtsectsize;     /* realtime sector size, bytes  */
 185        __u32           dirblocksize;   /* directory block size, bytes  */
 186        __u32           logsunit;       /* log stripe unit, bytes */
 187} xfs_fsop_geom_t;
 188
 189/* Output for XFS_FS_COUNTS */
 190typedef struct xfs_fsop_counts {
 191        __u64   freedata;       /* free data section blocks */
 192        __u64   freertx;        /* free rt extents */
 193        __u64   freeino;        /* free inodes */
 194        __u64   allocino;       /* total allocated inodes */
 195} xfs_fsop_counts_t;
 196
 197/* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
 198typedef struct xfs_fsop_resblks {
 199        __u64  resblks;
 200        __u64  resblks_avail;
 201} xfs_fsop_resblks_t;
 202
 203#define XFS_FSOP_GEOM_VERSION   0
 204
 205#define XFS_FSOP_GEOM_FLAGS_ATTR        0x0001  /* attributes in use    */
 206#define XFS_FSOP_GEOM_FLAGS_NLINK       0x0002  /* 32-bit nlink values  */
 207#define XFS_FSOP_GEOM_FLAGS_QUOTA       0x0004  /* quotas enabled       */
 208#define XFS_FSOP_GEOM_FLAGS_IALIGN      0x0008  /* inode alignment      */
 209#define XFS_FSOP_GEOM_FLAGS_DALIGN      0x0010  /* large data alignment */
 210#define XFS_FSOP_GEOM_FLAGS_SHARED      0x0020  /* read-only shared     */
 211#define XFS_FSOP_GEOM_FLAGS_EXTFLG      0x0040  /* special extent flag  */
 212#define XFS_FSOP_GEOM_FLAGS_DIRV2       0x0080  /* directory version 2  */
 213#define XFS_FSOP_GEOM_FLAGS_LOGV2       0x0100  /* log format version 2 */
 214#define XFS_FSOP_GEOM_FLAGS_SECTOR      0x0200  /* sector sizes >1BB    */
 215#define XFS_FSOP_GEOM_FLAGS_ATTR2       0x0400  /* inline attributes rework */
 216#define XFS_FSOP_GEOM_FLAGS_PROJID32    0x0800  /* 32-bit project IDs   */
 217#define XFS_FSOP_GEOM_FLAGS_DIRV2CI     0x1000  /* ASCII only CI names  */
 218#define XFS_FSOP_GEOM_FLAGS_LAZYSB      0x4000  /* lazy superblock counters */
 219#define XFS_FSOP_GEOM_FLAGS_V5SB        0x8000  /* version 5 superblock */
 220#define XFS_FSOP_GEOM_FLAGS_FTYPE       0x10000 /* inode directory types */
 221#define XFS_FSOP_GEOM_FLAGS_FINOBT      0x20000 /* free inode btree */
 222#define XFS_FSOP_GEOM_FLAGS_SPINODES    0x40000 /* sparse inode chunks  */
 223#define XFS_FSOP_GEOM_FLAGS_RMAPBT      0x80000 /* reverse mapping btree */
 224#define XFS_FSOP_GEOM_FLAGS_REFLINK     0x100000 /* files can share blocks */
 225
 226/*
 227 * Minimum and maximum sizes need for growth checks.
 228 *
 229 * Block counts are in units of filesystem blocks, not basic blocks.
 230 */
 231#define XFS_MIN_AG_BLOCKS       64
 232#define XFS_MIN_LOG_BLOCKS      512ULL
 233#define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 234#define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 235
 236/* keep the maximum size under 2^31 by a small amount */
 237#define XFS_MAX_LOG_BYTES \
 238        ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 239
 240/* Used for sanity checks on superblock */
 241#define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
 242#define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *     \
 243                         (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 244
 245/*
 246 * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 247 */
 248typedef struct xfs_growfs_data {
 249        __u64           newblocks;      /* new data subvol size, fsblocks */
 250        __u32           imaxpct;        /* new inode space percentage limit */
 251} xfs_growfs_data_t;
 252
 253typedef struct xfs_growfs_log {
 254        __u32           newblocks;      /* new log size, fsblocks */
 255        __u32           isint;          /* 1 if new log is internal */
 256} xfs_growfs_log_t;
 257
 258typedef struct xfs_growfs_rt {
 259        __u64           newblocks;      /* new realtime size, fsblocks */
 260        __u32           extsize;        /* new realtime extent size, fsblocks */
 261} xfs_growfs_rt_t;
 262
 263
 264/*
 265 * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 266 */
 267typedef struct xfs_bstime {
 268        time_t          tv_sec;         /* seconds              */
 269        __s32           tv_nsec;        /* and nanoseconds      */
 270} xfs_bstime_t;
 271
 272typedef struct xfs_bstat {
 273        __u64           bs_ino;         /* inode number                 */
 274        __u16           bs_mode;        /* type and mode                */
 275        __u16           bs_nlink;       /* number of links              */
 276        __u32           bs_uid;         /* user id                      */
 277        __u32           bs_gid;         /* group id                     */
 278        __u32           bs_rdev;        /* device value                 */
 279        __s32           bs_blksize;     /* block size                   */
 280        __s64           bs_size;        /* file size                    */
 281        xfs_bstime_t    bs_atime;       /* access time                  */
 282        xfs_bstime_t    bs_mtime;       /* modify time                  */
 283        xfs_bstime_t    bs_ctime;       /* inode change time            */
 284        int64_t         bs_blocks;      /* number of blocks             */
 285        __u32           bs_xflags;      /* extended flags               */
 286        __s32           bs_extsize;     /* extent size                  */
 287        __s32           bs_extents;     /* number of extents            */
 288        __u32           bs_gen;         /* generation count             */
 289        __u16           bs_projid_lo;   /* lower part of project id     */
 290#define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 291        __u16           bs_forkoff;     /* inode fork offset in bytes   */
 292        __u16           bs_projid_hi;   /* higher part of project id    */
 293        unsigned char   bs_pad[6];      /* pad space, unused            */
 294        __u32           bs_cowextsize;  /* cow extent size              */
 295        __u32           bs_dmevmask;    /* DMIG event mask              */
 296        __u16           bs_dmstate;     /* DMIG state info              */
 297        __u16           bs_aextents;    /* attribute number of extents  */
 298} xfs_bstat_t;
 299
 300/*
 301 * Project quota id helpers (previously projid was 16bit only
 302 * and using two 16bit values to hold new 32bit projid was choosen
 303 * to retain compatibility with "old" filesystems).
 304 */
 305static inline uint32_t
 306bstat_get_projid(struct xfs_bstat *bs)
 307{
 308        return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 309}
 310
 311/*
 312 * The user-level BulkStat Request interface structure.
 313 */
 314typedef struct xfs_fsop_bulkreq {
 315        __u64           __user *lastip; /* last inode # pointer         */
 316        __s32           icount;         /* count of entries in buffer   */
 317        void            __user *ubuffer;/* user buffer for inode desc.  */
 318        __s32           __user *ocount; /* output count pointer         */
 319} xfs_fsop_bulkreq_t;
 320
 321
 322/*
 323 * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 324 */
 325typedef struct xfs_inogrp {
 326        __u64           xi_startino;    /* starting inode number        */
 327        __s32           xi_alloccount;  /* # bits set in allocmask      */
 328        __u64           xi_allocmask;   /* mask of allocated inodes     */
 329} xfs_inogrp_t;
 330
 331
 332/*
 333 * Error injection.
 334 */
 335typedef struct xfs_error_injection {
 336        __s32           fd;
 337        __s32           errtag;
 338} xfs_error_injection_t;
 339
 340
 341/*
 342 * Speculative preallocation trimming.
 343 */
 344#define XFS_EOFBLOCKS_VERSION           1
 345struct xfs_fs_eofblocks {
 346        __u32           eof_version;
 347        __u32           eof_flags;
 348        uid_t           eof_uid;
 349        gid_t           eof_gid;
 350        prid_t          eof_prid;
 351        __u32           pad32;
 352        __u64           eof_min_file_size;
 353        __u64           pad64[12];
 354};
 355
 356/* eof_flags values */
 357#define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 358#define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 359#define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 360#define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 361#define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 362#define XFS_EOF_FLAGS_UNION             (1 << 5) /* union filter algorithm;
 363                                                  * kernel only, not included in
 364                                                  * valid mask */
 365#define XFS_EOF_FLAGS_VALID     \
 366        (XFS_EOF_FLAGS_SYNC |   \
 367         XFS_EOF_FLAGS_UID |    \
 368         XFS_EOF_FLAGS_GID |    \
 369         XFS_EOF_FLAGS_PRID |   \
 370         XFS_EOF_FLAGS_MINFILESIZE)
 371
 372
 373/*
 374 * The user-level Handle Request interface structure.
 375 */
 376typedef struct xfs_fsop_handlereq {
 377        __u32           fd;             /* fd for FD_TO_HANDLE          */
 378        void            __user *path;   /* user pathname                */
 379        __u32           oflags;         /* open flags                   */
 380        void            __user *ihandle;/* user supplied handle         */
 381        __u32           ihandlen;       /* user supplied length         */
 382        void            __user *ohandle;/* user buffer for handle       */
 383        __u32           __user *ohandlen;/* user buffer length          */
 384} xfs_fsop_handlereq_t;
 385
 386/*
 387 * Compound structures for passing args through Handle Request interfaces
 388 * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 389 * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 390 *           XFS_IOC_ATTRMULTI_BY_HANDLE
 391 */
 392
 393typedef struct xfs_fsop_setdm_handlereq {
 394        struct xfs_fsop_handlereq       hreq;   /* handle information   */
 395        struct fsdmidata                __user *data;   /* DMAPI data   */
 396} xfs_fsop_setdm_handlereq_t;
 397
 398typedef struct xfs_attrlist_cursor {
 399        __u32           opaque[4];
 400} xfs_attrlist_cursor_t;
 401
 402typedef struct xfs_fsop_attrlist_handlereq {
 403        struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 404        struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 405        __u32                           flags;  /* which namespace to use */
 406        __u32                           buflen; /* length of buffer supplied */
 407        void                            __user *buffer; /* returned names */
 408} xfs_fsop_attrlist_handlereq_t;
 409
 410typedef struct xfs_attr_multiop {
 411        __u32           am_opcode;
 412#define ATTR_OP_GET     1       /* return the indicated attr's value */
 413#define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 414#define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 415        __s32           am_error;
 416        void            __user *am_attrname;
 417        void            __user *am_attrvalue;
 418        __u32           am_length;
 419        __u32           am_flags;
 420} xfs_attr_multiop_t;
 421
 422typedef struct xfs_fsop_attrmulti_handlereq {
 423        struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 424        __u32                           opcount;/* count of following multiop */
 425        struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 426} xfs_fsop_attrmulti_handlereq_t;
 427
 428/*
 429 * per machine unique filesystem identifier types.
 430 */
 431typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 432
 433typedef struct xfs_fid {
 434        __u16   fid_len;                /* length of remainder  */
 435        __u16   fid_pad;
 436        __u32   fid_gen;                /* generation number    */
 437        __u64   fid_ino;                /* 64 bits inode number */
 438} xfs_fid_t;
 439
 440typedef struct xfs_handle {
 441        union {
 442                __s64       align;      /* force alignment of ha_fid     */
 443                xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 444        } ha_u;
 445        xfs_fid_t       ha_fid;         /* file system specific file ID  */
 446} xfs_handle_t;
 447#define ha_fsid ha_u._ha_fsid
 448
 449/*
 450 * Structure passed to XFS_IOC_SWAPEXT
 451 */
 452typedef struct xfs_swapext
 453{
 454        int64_t         sx_version;     /* version */
 455#define XFS_SX_VERSION          0
 456        int64_t         sx_fdtarget;    /* fd of target file */
 457        int64_t         sx_fdtmp;       /* fd of tmp file */
 458        xfs_off_t       sx_offset;      /* offset into file */
 459        xfs_off_t       sx_length;      /* leng from offset */
 460        char            sx_pad[16];     /* pad space, unused */
 461        xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 462} xfs_swapext_t;
 463
 464/*
 465 * Flags for going down operation
 466 */
 467#define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 468#define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 469#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 470
 471/*
 472 * ioctl limits
 473 */
 474#ifdef XATTR_LIST_MAX
 475#  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
 476#else
 477#  define XFS_XATTR_LIST_MAX 65536
 478#endif
 479
 480
 481/*
 482 * ioctl commands that are used by Linux filesystems
 483 */
 484#define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 485#define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 486#define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 487
 488/*
 489 * ioctl commands that replace IRIX fcntl()'s
 490 * For 'documentation' purposed more than anything else,
 491 * the "cmd #" field reflects the IRIX fcntl number.
 492 */
 493#define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 494#define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 495#define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 496#define XFS_IOC_FSGETXATTR      FS_IOC_FSGETXATTR
 497#define XFS_IOC_FSSETXATTR      FS_IOC_FSSETXATTR
 498#define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 499#define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 500#define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 501#define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 502#define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 503#define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 504#define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 505#define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 506#define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 507#define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 508/*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 509/*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 510#define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 511#define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 512#define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 513/*      XFS_IOC_GETFSMAP ------ hoisted 59         */
 514
 515/*
 516 * ioctl commands that replace IRIX syssgi()'s
 517 */
 518#define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 519#define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 520#define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 521#define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 522#define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 523#define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 524#define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 525#define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 526#define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 527#define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 528#define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 529#define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 530#define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 531#define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 532#define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 533#define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 534#define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 535#define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 536/*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 537
 538#define XFS_IOC_FREEZE               _IOWR('X', 119, int)       /* aka FIFREEZE */
 539#define XFS_IOC_THAW                 _IOWR('X', 120, int)       /* aka FITHAW */
 540
 541#define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 542#define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 543#define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 544#define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 545#define XFS_IOC_GOINGDOWN            _IOR ('X', 125, uint32_t)
 546/*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 547
 548
 549#ifndef HAVE_BBMACROS
 550/*
 551 * Block I/O parameterization.  A basic block (BB) is the lowest size of
 552 * filesystem allocation, and must equal 512.  Length units given to bio
 553 * routines are in BB's.
 554 */
 555#define BBSHIFT         9
 556#define BBSIZE          (1<<BBSHIFT)
 557#define BBMASK          (BBSIZE-1)
 558#define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 559#define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 560#define BBTOB(bbs)      ((bbs) << BBSHIFT)
 561#endif
 562
 563#endif  /* __XFS_FS_H__ */
 564