fs/xfs/xfs_fs.h

   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
  31 struct 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
  42 struct 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
  80 struct 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
  99 struct 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
 135 struct 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  */
 146 typedef 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  */
 159 typedef 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  */
 185 typedef 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 */
 210 typedef 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 */
 218 typedef 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 #define XFS_FSOP_GEOM_FLAGS_FTYPE       0x10000 /* inode directory types */
 241 #define XFS_FSOP_GEOM_FLAGS_FINOBT      0x20000 /* free inode btree */
 242
 243 /*
 244  * Minimum and maximum sizes need for growth checks.
 245  *
 246  * Block counts are in units of filesystem blocks, not basic blocks.
 247  */
 248 #define XFS_MIN_AG_BLOCKS       64
 249 #define XFS_MIN_LOG_BLOCKS      512ULL
 250 #define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 251 #define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 252
 253 /* keep the maximum size under 2^31 by a small amount */
 254 #define XFS_MAX_LOG_BYTES \
 255         ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 256
 257 /* Used for sanity checks on superblock */
 258 #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
 259 #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *     \
 260                          (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 261
 262 /*
 263  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 264  */
 265 typedef struct xfs_growfs_data {
 266         __u64           newblocks;      /* new data subvol size, fsblocks */
 267         __u32           imaxpct;        /* new inode space percentage limit */
 268 } xfs_growfs_data_t;
 269
 270 typedef struct xfs_growfs_log {
 271         __u32           newblocks;      /* new log size, fsblocks */
 272         __u32           isint;          /* 1 if new log is internal */
 273 } xfs_growfs_log_t;
 274
 275 typedef struct xfs_growfs_rt {
 276         __u64           newblocks;      /* new realtime size, fsblocks */
 277         __u32           extsize;        /* new realtime extent size, fsblocks */
 278 } xfs_growfs_rt_t;
 279
 280
 281 /*
 282  * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 283  */
 284 typedef struct xfs_bstime {
 285         time_t          tv_sec;         /* seconds              */
 286         __s32           tv_nsec;        /* and nanoseconds      */
 287 } xfs_bstime_t;
 288
 289 typedef struct xfs_bstat {
 290         __u64           bs_ino;         /* inode number                 */
 291         __u16           bs_mode;        /* type and mode                */
 292         __u16           bs_nlink;       /* number of links              */
 293         __u32           bs_uid;         /* user id                      */
 294         __u32           bs_gid;         /* group id                     */
 295         __u32           bs_rdev;        /* device value                 */
 296         __s32           bs_blksize;     /* block size                   */
 297         __s64           bs_size;        /* file size                    */
 298         xfs_bstime_t    bs_atime;       /* access time                  */
 299         xfs_bstime_t    bs_mtime;       /* modify time                  */
 300         xfs_bstime_t    bs_ctime;       /* inode change time            */
 301         int64_t         bs_blocks;      /* number of blocks             */
 302         __u32           bs_xflags;      /* extended flags               */
 303         __s32           bs_extsize;     /* extent size                  */
 304         __s32           bs_extents;     /* number of extents            */
 305         __u32           bs_gen;         /* generation count             */
 306         __u16           bs_projid_lo;   /* lower part of project id     */
 307 #define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 308         __u16           bs_forkoff;     /* inode fork offset in bytes   */
 309         __u16           bs_projid_hi;   /* higher part of project id    */
 310         unsigned char   bs_pad[10];     /* pad space, unused            */
 311         __u32           bs_dmevmask;    /* DMIG event mask              */
 312         __u16           bs_dmstate;     /* DMIG state info              */
 313         __u16           bs_aextents;    /* attribute number of extents  */
 314 } xfs_bstat_t;
 315
 316 /*
 317  * Project quota id helpers (previously projid was 16bit only
 318  * and using two 16bit values to hold new 32bit projid was choosen
 319  * to retain compatibility with "old" filesystems).
 320  */
 321 static inline __uint32_t
 322 bstat_get_projid(struct xfs_bstat *bs)
 323 {
 324         return (__uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 325 }
 326
 327 /*
 328  * The user-level BulkStat Request interface structure.
 329  */
 330 typedef struct xfs_fsop_bulkreq {
 331         __u64           __user *lastip; /* last inode # pointer         */
 332         __s32           icount;         /* count of entries in buffer   */
 333         void            __user *ubuffer;/* user buffer for inode desc.  */
 334         __s32           __user *ocount; /* output count pointer         */
 335 } xfs_fsop_bulkreq_t;
 336
 337
 338 /*
 339  * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 340  */
 341 typedef struct xfs_inogrp {
 342         __u64           xi_startino;    /* starting inode number        */
 343         __s32           xi_alloccount;  /* # bits set in allocmask      */
 344         __u64           xi_allocmask;   /* mask of allocated inodes     */
 345 } xfs_inogrp_t;
 346
 347
 348 /*
 349  * Error injection.
 350  */
 351 typedef struct xfs_error_injection {
 352         __s32           fd;
 353         __s32           errtag;
 354 } xfs_error_injection_t;
 355
 356
 357 /*
 358  * Speculative preallocation trimming.
 359  */
 360 #define XFS_EOFBLOCKS_VERSION           1
 361 struct xfs_fs_eofblocks {
 362         __u32           eof_version;
 363         __u32           eof_flags;
 364         uid_t           eof_uid;
 365         gid_t           eof_gid;
 366         prid_t          eof_prid;
 367         __u32           pad32;
 368         __u64           eof_min_file_size;
 369         __u64           pad64[12];
 370 };
 371
 372 /* eof_flags values */
 373 #define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 374 #define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 375 #define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 376 #define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 377 #define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 378 #define XFS_EOF_FLAGS_UNION             (1 << 5) /* union filter algorithm;
 379                                                   * kernel only, not included in
 380                                                   * valid mask */
 381 #define XFS_EOF_FLAGS_VALID     \
 382         (XFS_EOF_FLAGS_SYNC |   \
 383          XFS_EOF_FLAGS_UID |    \
 384          XFS_EOF_FLAGS_GID |    \
 385          XFS_EOF_FLAGS_PRID |   \
 386          XFS_EOF_FLAGS_MINFILESIZE)
 387
 388
 389 /*
 390  * The user-level Handle Request interface structure.
 391  */
 392 typedef struct xfs_fsop_handlereq {
 393         __u32           fd;             /* fd for FD_TO_HANDLE          */
 394         void            __user *path;   /* user pathname                */
 395         __u32           oflags;         /* open flags                   */
 396         void            __user *ihandle;/* user supplied handle         */
 397         __u32           ihandlen;       /* user supplied length         */
 398         void            __user *ohandle;/* user buffer for handle       */
 399         __u32           __user *ohandlen;/* user buffer length          */
 400 } xfs_fsop_handlereq_t;
 401
 402 /*
 403  * Compound structures for passing args through Handle Request interfaces
 404  * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 405  * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 406  *           XFS_IOC_ATTRMULTI_BY_HANDLE
 407  */
 408
 409 typedef struct xfs_fsop_setdm_handlereq {
 410         struct xfs_fsop_handlereq       hreq;   /* handle information   */
 411         struct fsdmidata                __user *data;   /* DMAPI data   */
 412 } xfs_fsop_setdm_handlereq_t;
 413
 414 typedef struct xfs_attrlist_cursor {
 415         __u32           opaque[4];
 416 } xfs_attrlist_cursor_t;
 417
 418 typedef struct xfs_fsop_attrlist_handlereq {
 419         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 420         struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 421         __u32                           flags;  /* which namespace to use */
 422         __u32                           buflen; /* length of buffer supplied */
 423         void                            __user *buffer; /* returned names */
 424 } xfs_fsop_attrlist_handlereq_t;
 425
 426 typedef struct xfs_attr_multiop {
 427         __u32           am_opcode;
 428 #define ATTR_OP_GET     1       /* return the indicated attr's value */
 429 #define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 430 #define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 431         __s32           am_error;
 432         void            __user *am_attrname;
 433         void            __user *am_attrvalue;
 434         __u32           am_length;
 435         __u32           am_flags;
 436 } xfs_attr_multiop_t;
 437
 438 typedef struct xfs_fsop_attrmulti_handlereq {
 439         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 440         __u32                           opcount;/* count of following multiop */
 441         struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 442 } xfs_fsop_attrmulti_handlereq_t;
 443
 444 /*
 445  * per machine unique filesystem identifier types.
 446  */
 447 typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 448
 449 typedef struct xfs_fid {
 450         __u16   fid_len;                /* length of remainder  */
 451         __u16   fid_pad;
 452         __u32   fid_gen;                /* generation number    */
 453         __u64   fid_ino;                /* 64 bits inode number */
 454 } xfs_fid_t;
 455
 456 typedef struct xfs_handle {
 457         union {
 458                 __s64       align;      /* force alignment of ha_fid     */
 459                 xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 460         } ha_u;
 461         xfs_fid_t       ha_fid;         /* file system specific file ID  */
 462 } xfs_handle_t;
 463 #define ha_fsid ha_u._ha_fsid
 464
 465 #define XFS_HSIZE(handle)       (((char *) &(handle).ha_fid.fid_pad      \
 466                                  - (char *) &(handle))                    \
 467                                  + (handle).ha_fid.fid_len)
 468
 469 /*
 470  * Structure passed to XFS_IOC_SWAPEXT
 471  */
 472 typedef struct xfs_swapext
 473 {
 474         __int64_t       sx_version;     /* version */
 475 #define XFS_SX_VERSION          0
 476         __int64_t       sx_fdtarget;    /* fd of target file */
 477         __int64_t       sx_fdtmp;       /* fd of tmp file */
 478         xfs_off_t       sx_offset;      /* offset into file */
 479         xfs_off_t       sx_length;      /* leng from offset */
 480         char            sx_pad[16];     /* pad space, unused */
 481         xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 482 } xfs_swapext_t;
 483
 484 /*
 485  * Flags for going down operation
 486  */
 487 #define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 488 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 489 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 490
 491 /*
 492  * ioctl commands that are used by Linux filesystems
 493  */
 494 #define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 495 #define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 496 #define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 497
 498 /*
 499  * ioctl commands that replace IRIX fcntl()'s
 500  * For 'documentation' purposed more than anything else,
 501  * the "cmd #" field reflects the IRIX fcntl number.
 502  */
 503 #define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 504 #define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 505 #define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 506 #define XFS_IOC_FSGETXATTR      _IOR ('X', 31, struct fsxattr)
 507 #define XFS_IOC_FSSETXATTR      _IOW ('X', 32, struct fsxattr)
 508 #define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 509 #define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 510 #define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 511 #define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 512 #define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 513 #define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 514 #define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 515 #define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 516 #define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 517 #define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 518 /*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 519 /*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 520 #define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 521 #define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 522 #define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 523
 524 /*
 525  * ioctl commands that replace IRIX syssgi()'s
 526  */
 527 #define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 528 #define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 529 #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 530 #define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 531 #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 532 #define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 533 #define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 534 #define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 535 #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 536 #define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 537 #define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 538 #define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 539 #define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 540 #define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 541 #define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 542 #define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 543 #define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 544 #define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 545 /*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 546
 547 /*      XFS_IOC_FREEZE            -- FIFREEZE   119      */
 548 /*      XFS_IOC_THAW              -- FITHAW     120      */
 549 #ifndef FIFREEZE
 550 #define XFS_IOC_FREEZE               _IOWR('X', 119, int)
 551 #define XFS_IOC_THAW                 _IOWR('X', 120, int)
 552 #endif
 553
 554 #define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 555 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 556 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 557 #define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 558 #define XFS_IOC_GOINGDOWN            _IOR ('X', 125, __uint32_t)
 559 /*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 560
 561
 562 #ifndef HAVE_BBMACROS
 563 /*
 564  * Block I/O parameterization.  A basic block (BB) is the lowest size of
 565  * filesystem allocation, and must equal 512.  Length units given to bio
 566  * routines are in BB's.
 567  */
 568 #define BBSHIFT         9
 569 #define BBSIZE          (1<<BBSHIFT)
 570 #define BBMASK          (BBSIZE-1)
 571 #define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 572 #define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 573 #define BBTOB(bbs)      ((bbs) << BBSHIFT)
 574 #endif
 575
 576 #endif  /* __XFS_FS_H__ */