libxfs/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  * Flags for the bs_xflags/fsx_xflags field in XFS_IOC_FS[GS]ETXATTR[A]
  40  * These are for backwards compatibility only. New code should
  41  * use the kernel [4.5 onwards] defined FS_XFLAG_* definitions directly.
  42  */
  43 #define XFS_XFLAG_REALTIME      FS_XFLAG_REALTIME
  44 #define XFS_XFLAG_PREALLOC      FS_XFLAG_PREALLOC
  45 #define XFS_XFLAG_IMMUTABLE     FS_XFLAG_IMMUTABLE
  46 #define XFS_XFLAG_APPEND        FS_XFLAG_APPEND
  47 #define XFS_XFLAG_SYNC          FS_XFLAG_SYNC
  48 #define XFS_XFLAG_NOATIME       FS_XFLAG_NOATIME
  49 #define XFS_XFLAG_NODUMP        FS_XFLAG_NODUMP
  50 #define XFS_XFLAG_RTINHERIT     FS_XFLAG_RTINHERIT
  51 #define XFS_XFLAG_PROJINHERIT   FS_XFLAG_PROJINHERIT
  52 #define XFS_XFLAG_NOSYMLINKS    FS_XFLAG_NOSYMLINKS
  53 #define XFS_XFLAG_EXTSIZE       FS_XFLAG_EXTSIZE
  54 #define XFS_XFLAG_EXTSZINHERIT  FS_XFLAG_EXTSZINHERIT
  55 #define XFS_XFLAG_NODEFRAG      FS_XFLAG_NODEFRAG
  56 #define XFS_XFLAG_FILESTREAM    FS_XFLAG_FILESTREAM
  57 #define XFS_XFLAG_HASATTR       FS_XFLAG_HASATTR
  58
  59 #define XFS_IOC_FSGETXATTR      FS_IOC_FSGETXATTR
  60 #define XFS_IOC_FSSETXATTR      FS_IOC_FSSETXATTR
  61
  62 /*
  63  * Structure for XFS_IOC_GETBMAP.
  64  * On input, fill in bmv_offset and bmv_length of the first structure
  65  * to indicate the area of interest in the file, and bmv_entries with
  66  * the number of array elements given back.  The first structure is
  67  * updated on return to give the offset and length for the next call.
  68  */
  69 #ifndef HAVE_GETBMAP
  70 struct getbmap {
  71         __s64           bmv_offset;     /* file offset of segment in blocks */
  72         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  73         __s64           bmv_length;     /* length of segment, blocks        */
  74         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  75         __s32           bmv_entries;    /* # of entries filled in (output)  */
  76 };
  77 #endif
  78
  79 /*
  80  *      Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries
  81  *      are used exactly as in the getbmap structure.  The getbmapx structure
  82  *      has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
  83  *      is only used for the first structure.  It contains input flags
  84  *      specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
  85  *      in by the XFS_IOC_GETBMAPX command for each returned structure after
  86  *      the first.
  87  */
  88 #ifndef HAVE_GETBMAPX
  89 struct getbmapx {
  90         __s64           bmv_offset;     /* file offset of segment in blocks */
  91         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  92         __s64           bmv_length;     /* length of segment, blocks        */
  93         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  94         __s32           bmv_entries;    /* # of entries filled in (output). */
  95         __s32           bmv_iflags;     /* input flags (1st structure)      */
  96         __s32           bmv_oflags;     /* output flags (after 1st structure)*/
  97         __s32           bmv_unused1;    /* future use                       */
  98         __s32           bmv_unused2;    /* future use                       */
  99 };
 100 #endif
 101
 102 /*      bmv_iflags values - set by XFS_IOC_GETBMAPX caller.     */
 103 #define BMV_IF_ATTRFORK         0x1     /* return attr fork rather than data */
 104 #define BMV_IF_NO_DMAPI_READ    0x2     /* Do not generate DMAPI read event  */
 105 #define BMV_IF_PREALLOC         0x4     /* rtn status BMV_OF_PREALLOC if req */
 106 #define BMV_IF_DELALLOC         0x8     /* rtn status BMV_OF_DELALLOC if req */
 107 #define BMV_IF_NO_HOLES         0x10    /* Do not return holes */
 108 #define BMV_IF_VALID    \
 109         (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \
 110          BMV_IF_DELALLOC|BMV_IF_NO_HOLES)
 111
 112 /*      bmv_oflags values - returned for each non-header segment */
 113 #define BMV_OF_PREALLOC         0x1     /* segment = unwritten pre-allocation */
 114 #define BMV_OF_DELALLOC         0x2     /* segment = delayed allocation */
 115 #define BMV_OF_LAST             0x4     /* segment is the last in the file */
 116
 117 /*
 118  * Structure for XFS_IOC_FSSETDM.
 119  * For use by backup and restore programs to set the XFS on-disk inode
 120  * fields di_dmevmask and di_dmstate.  These must be set to exactly and
 121  * only values previously obtained via xfs_bulkstat!  (Specifically the
 122  * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
 123  */
 124 #ifndef HAVE_FSDMIDATA
 125 struct fsdmidata {
 126         __u32           fsd_dmevmask;   /* corresponds to di_dmevmask */
 127         __u16           fsd_padding;
 128         __u16           fsd_dmstate;    /* corresponds to di_dmstate  */
 129 };
 130 #endif
 131
 132 /*
 133  * File segment locking set data type for 64 bit access.
 134  * Also used for all the RESV/FREE interfaces.
 135  */
 136 typedef struct xfs_flock64 {
 137         __s16           l_type;
 138         __s16           l_whence;
 139         __s64           l_start;
 140         __s64           l_len;          /* len == 0 means until end of file */
 141         __s32           l_sysid;
 142         __u32           l_pid;
 143         __s32           l_pad[4];       /* reserve area                     */
 144 } xfs_flock64_t;
 145
 146 /*
 147  * Output for XFS_IOC_FSGEOMETRY_V1
 148  */
 149 typedef struct xfs_fsop_geom_v1 {
 150         __u32           blocksize;      /* filesystem (data) block size */
 151         __u32           rtextsize;      /* realtime extent size         */
 152         __u32           agblocks;       /* fsblocks in an AG            */
 153         __u32           agcount;        /* number of allocation groups  */
 154         __u32           logblocks;      /* fsblocks in the log          */
 155         __u32           sectsize;       /* (data) sector size, bytes    */
 156         __u32           inodesize;      /* inode size in bytes          */
 157         __u32           imaxpct;        /* max allowed inode space(%)   */
 158         __u64           datablocks;     /* fsblocks in data subvolume   */
 159         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 160         __u64           rtextents;      /* rt extents in realtime subvol*/
 161         __u64           logstart;       /* starting fsblock of the log  */
 162         unsigned char   uuid[16];       /* unique id of the filesystem  */
 163         __u32           sunit;          /* stripe unit, fsblocks        */
 164         __u32           swidth;         /* stripe width, fsblocks       */
 165         __s32           version;        /* structure version            */
 166         __u32           flags;          /* superblock version flags     */
 167         __u32           logsectsize;    /* log sector size, bytes       */
 168         __u32           rtsectsize;     /* realtime sector size, bytes  */
 169         __u32           dirblocksize;   /* directory block size, bytes  */
 170 } xfs_fsop_geom_v1_t;
 171
 172 /*
 173  * Output for XFS_IOC_FSGEOMETRY
 174  */
 175 typedef struct xfs_fsop_geom {
 176         __u32           blocksize;      /* filesystem (data) block size */
 177         __u32           rtextsize;      /* realtime extent size         */
 178         __u32           agblocks;       /* fsblocks in an AG            */
 179         __u32           agcount;        /* number of allocation groups  */
 180         __u32           logblocks;      /* fsblocks in the log          */
 181         __u32           sectsize;       /* (data) sector size, bytes    */
 182         __u32           inodesize;      /* inode size in bytes          */
 183         __u32           imaxpct;        /* max allowed inode space(%)   */
 184         __u64           datablocks;     /* fsblocks in data subvolume   */
 185         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 186         __u64           rtextents;      /* rt extents in realtime subvol*/
 187         __u64           logstart;       /* starting fsblock of the log  */
 188         unsigned char   uuid[16];       /* unique id of the filesystem  */
 189         __u32           sunit;          /* stripe unit, fsblocks        */
 190         __u32           swidth;         /* stripe width, fsblocks       */
 191         __s32           version;        /* structure version            */
 192         __u32           flags;          /* superblock version flags     */
 193         __u32           logsectsize;    /* log sector size, bytes       */
 194         __u32           rtsectsize;     /* realtime sector size, bytes  */
 195         __u32           dirblocksize;   /* directory block size, bytes  */
 196         __u32           logsunit;       /* log stripe unit, bytes */
 197 } xfs_fsop_geom_t;
 198
 199 /* Output for XFS_FS_COUNTS */
 200 typedef struct xfs_fsop_counts {
 201         __u64   freedata;       /* free data section blocks */
 202         __u64   freertx;        /* free rt extents */
 203         __u64   freeino;        /* free inodes */
 204         __u64   allocino;       /* total allocated inodes */
 205 } xfs_fsop_counts_t;
 206
 207 /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
 208 typedef struct xfs_fsop_resblks {
 209         __u64  resblks;
 210         __u64  resblks_avail;
 211 } xfs_fsop_resblks_t;
 212
 213 #define XFS_FSOP_GEOM_VERSION   0
 214
 215 #define XFS_FSOP_GEOM_FLAGS_ATTR        0x0001  /* attributes in use    */
 216 #define XFS_FSOP_GEOM_FLAGS_NLINK       0x0002  /* 32-bit nlink values  */
 217 #define XFS_FSOP_GEOM_FLAGS_QUOTA       0x0004  /* quotas enabled       */
 218 #define XFS_FSOP_GEOM_FLAGS_IALIGN      0x0008  /* inode alignment      */
 219 #define XFS_FSOP_GEOM_FLAGS_DALIGN      0x0010  /* large data alignment */
 220 #define XFS_FSOP_GEOM_FLAGS_SHARED      0x0020  /* read-only shared     */
 221 #define XFS_FSOP_GEOM_FLAGS_EXTFLG      0x0040  /* special extent flag  */
 222 #define XFS_FSOP_GEOM_FLAGS_DIRV2       0x0080  /* directory version 2  */
 223 #define XFS_FSOP_GEOM_FLAGS_LOGV2       0x0100  /* log format version 2 */
 224 #define XFS_FSOP_GEOM_FLAGS_SECTOR      0x0200  /* sector sizes >1BB    */
 225 #define XFS_FSOP_GEOM_FLAGS_ATTR2       0x0400  /* inline attributes rework */
 226 #define XFS_FSOP_GEOM_FLAGS_PROJID32    0x0800  /* 32-bit project IDs   */
 227 #define XFS_FSOP_GEOM_FLAGS_DIRV2CI     0x1000  /* ASCII only CI names  */
 228 #define XFS_FSOP_GEOM_FLAGS_LAZYSB      0x4000  /* lazy superblock counters */
 229 #define XFS_FSOP_GEOM_FLAGS_V5SB        0x8000  /* version 5 superblock */
 230 #define XFS_FSOP_GEOM_FLAGS_FTYPE       0x10000 /* inode directory types */
 231 #define XFS_FSOP_GEOM_FLAGS_FINOBT      0x20000 /* free inode btree */
 232 #define XFS_FSOP_GEOM_FLAGS_SPINODES    0x40000 /* sparse inode chunks  */
 233 #define XFS_FSOP_GEOM_FLAGS_RMAPBT      0x80000 /* Reverse mapping btree */
 234
 235 /*
 236  * Minimum and maximum sizes need for growth checks.
 237  *
 238  * Block counts are in units of filesystem blocks, not basic blocks.
 239  */
 240 #define XFS_MIN_AG_BLOCKS       64
 241 #define XFS_MIN_LOG_BLOCKS      512ULL
 242 #define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 243 #define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 244
 245 /* keep the maximum size under 2^31 by a small amount */
 246 #define XFS_MAX_LOG_BYTES \
 247         ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 248
 249 /* Used for sanity checks on superblock */
 250 #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
 251 #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *     \
 252                          (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 253
 254 /*
 255  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 256  */
 257 typedef struct xfs_growfs_data {
 258         __u64           newblocks;      /* new data subvol size, fsblocks */
 259         __u32           imaxpct;        /* new inode space percentage limit */
 260 } xfs_growfs_data_t;
 261
 262 typedef struct xfs_growfs_log {
 263         __u32           newblocks;      /* new log size, fsblocks */
 264         __u32           isint;          /* 1 if new log is internal */
 265 } xfs_growfs_log_t;
 266
 267 typedef struct xfs_growfs_rt {
 268         __u64           newblocks;      /* new realtime size, fsblocks */
 269         __u32           extsize;        /* new realtime extent size, fsblocks */
 270 } xfs_growfs_rt_t;
 271
 272
 273 /*
 274  * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 275  */
 276 typedef struct xfs_bstime {
 277         time_t          tv_sec;         /* seconds              */
 278         __s32           tv_nsec;        /* and nanoseconds      */
 279 } xfs_bstime_t;
 280
 281 typedef struct xfs_bstat {
 282         __u64           bs_ino;         /* inode number                 */
 283         __u16           bs_mode;        /* type and mode                */
 284         __u16           bs_nlink;       /* number of links              */
 285         __u32           bs_uid;         /* user id                      */
 286         __u32           bs_gid;         /* group id                     */
 287         __u32           bs_rdev;        /* device value                 */
 288         __s32           bs_blksize;     /* block size                   */
 289         __s64           bs_size;        /* file size                    */
 290         xfs_bstime_t    bs_atime;       /* access time                  */
 291         xfs_bstime_t    bs_mtime;       /* modify time                  */
 292         xfs_bstime_t    bs_ctime;       /* inode change time            */
 293         int64_t         bs_blocks;      /* number of blocks             */
 294         __u32           bs_xflags;      /* extended flags               */
 295         __s32           bs_extsize;     /* extent size                  */
 296         __s32           bs_extents;     /* number of extents            */
 297         __u32           bs_gen;         /* generation count             */
 298         __u16           bs_projid_lo;   /* lower part of project id     */
 299 #define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 300         __u16           bs_forkoff;     /* inode fork offset in bytes   */
 301         __u16           bs_projid_hi;   /* higher part of project id    */
 302         unsigned char   bs_pad[10];     /* pad space, unused            */
 303         __u32           bs_dmevmask;    /* DMIG event mask              */
 304         __u16           bs_dmstate;     /* DMIG state info              */
 305         __u16           bs_aextents;    /* attribute number of extents  */
 306 } xfs_bstat_t;
 307
 308 /*
 309  * Project quota id helpers (previously projid was 16bit only
 310  * and using two 16bit values to hold new 32bit projid was choosen
 311  * to retain compatibility with "old" filesystems).
 312  */
 313 static inline __uint32_t
 314 bstat_get_projid(struct xfs_bstat *bs)
 315 {
 316         return (__uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 317 }
 318
 319 /*
 320  * The user-level BulkStat Request interface structure.
 321  */
 322 typedef struct xfs_fsop_bulkreq {
 323         __u64           __user *lastip; /* last inode # pointer         */
 324         __s32           icount;         /* count of entries in buffer   */
 325         void            __user *ubuffer;/* user buffer for inode desc.  */
 326         __s32           __user *ocount; /* output count pointer         */
 327 } xfs_fsop_bulkreq_t;
 328
 329
 330 /*
 331  * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 332  */
 333 typedef struct xfs_inogrp {
 334         __u64           xi_startino;    /* starting inode number        */
 335         __s32           xi_alloccount;  /* # bits set in allocmask      */
 336         __u64           xi_allocmask;   /* mask of allocated inodes     */
 337 } xfs_inogrp_t;
 338
 339
 340 /*
 341  * Error injection.
 342  */
 343 typedef struct xfs_error_injection {
 344         __s32           fd;
 345         __s32           errtag;
 346 } xfs_error_injection_t;
 347
 348
 349 /*
 350  * Speculative preallocation trimming.
 351  */
 352 #define XFS_EOFBLOCKS_VERSION           1
 353 struct xfs_fs_eofblocks {
 354         __u32           eof_version;
 355         __u32           eof_flags;
 356         uid_t           eof_uid;
 357         gid_t           eof_gid;
 358         prid_t          eof_prid;
 359         __u32           pad32;
 360         __u64           eof_min_file_size;
 361         __u64           pad64[12];
 362 };
 363
 364 /* eof_flags values */
 365 #define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 366 #define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 367 #define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 368 #define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 369 #define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 370 #define XFS_EOF_FLAGS_UNION             (1 << 5) /* union filter algorithm;
 371                                                   * kernel only, not included in
 372                                                   * valid mask */
 373 #define XFS_EOF_FLAGS_VALID     \
 374         (XFS_EOF_FLAGS_SYNC |   \
 375          XFS_EOF_FLAGS_UID |    \
 376          XFS_EOF_FLAGS_GID |    \
 377          XFS_EOF_FLAGS_PRID |   \
 378          XFS_EOF_FLAGS_MINFILESIZE)
 379
 380
 381 /*
 382  * The user-level Handle Request interface structure.
 383  */
 384 typedef struct xfs_fsop_handlereq {
 385         __u32           fd;             /* fd for FD_TO_HANDLE          */
 386         void            __user *path;   /* user pathname                */
 387         __u32           oflags;         /* open flags                   */
 388         void            __user *ihandle;/* user supplied handle         */
 389         __u32           ihandlen;       /* user supplied length         */
 390         void            __user *ohandle;/* user buffer for handle       */
 391         __u32           __user *ohandlen;/* user buffer length          */
 392 } xfs_fsop_handlereq_t;
 393
 394 /*
 395  * Compound structures for passing args through Handle Request interfaces
 396  * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 397  * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 398  *           XFS_IOC_ATTRMULTI_BY_HANDLE
 399  */
 400
 401 typedef struct xfs_fsop_setdm_handlereq {
 402         struct xfs_fsop_handlereq       hreq;   /* handle information   */
 403         struct fsdmidata                __user *data;   /* DMAPI data   */
 404 } xfs_fsop_setdm_handlereq_t;
 405
 406 typedef struct xfs_attrlist_cursor {
 407         __u32           opaque[4];
 408 } xfs_attrlist_cursor_t;
 409
 410 typedef struct xfs_fsop_attrlist_handlereq {
 411         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 412         struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 413         __u32                           flags;  /* which namespace to use */
 414         __u32                           buflen; /* length of buffer supplied */
 415         void                            __user *buffer; /* returned names */
 416 } xfs_fsop_attrlist_handlereq_t;
 417
 418 typedef struct xfs_attr_multiop {
 419         __u32           am_opcode;
 420 #define ATTR_OP_GET     1       /* return the indicated attr's value */
 421 #define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 422 #define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 423         __s32           am_error;
 424         void            __user *am_attrname;
 425         void            __user *am_attrvalue;
 426         __u32           am_length;
 427         __u32           am_flags;
 428 } xfs_attr_multiop_t;
 429
 430 typedef struct xfs_fsop_attrmulti_handlereq {
 431         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 432         __u32                           opcount;/* count of following multiop */
 433         struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 434 } xfs_fsop_attrmulti_handlereq_t;
 435
 436 /*
 437  * per machine unique filesystem identifier types.
 438  */
 439 typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 440
 441 typedef struct xfs_fid {
 442         __u16   fid_len;                /* length of remainder  */
 443         __u16   fid_pad;
 444         __u32   fid_gen;                /* generation number    */
 445         __u64   fid_ino;                /* 64 bits inode number */
 446 } xfs_fid_t;
 447
 448 typedef struct xfs_handle {
 449         union {
 450                 __s64       align;      /* force alignment of ha_fid     */
 451                 xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 452         } ha_u;
 453         xfs_fid_t       ha_fid;         /* file system specific file ID  */
 454 } xfs_handle_t;
 455 #define ha_fsid ha_u._ha_fsid
 456
 457 #define XFS_HSIZE(handle)       (((char *) &(handle).ha_fid.fid_pad      \
 458                                  - (char *) &(handle))                    \
 459                                  + (handle).ha_fid.fid_len)
 460
 461 /*
 462  * Structure passed to XFS_IOC_SWAPEXT
 463  */
 464 typedef struct xfs_swapext
 465 {
 466         __int64_t       sx_version;     /* version */
 467 #define XFS_SX_VERSION          0
 468         __int64_t       sx_fdtarget;    /* fd of target file */
 469         __int64_t       sx_fdtmp;       /* fd of tmp file */
 470         xfs_off_t       sx_offset;      /* offset into file */
 471         xfs_off_t       sx_length;      /* leng from offset */
 472         char            sx_pad[16];     /* pad space, unused */
 473         xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 474 } xfs_swapext_t;
 475
 476 /*
 477  * Flags for going down operation
 478  */
 479 #define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 480 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 481 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 482
 483 /*
 484  * ioctl limits
 485  */
 486 #ifdef XATTR_LIST_MAX
 487 #  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
 488 #else
 489 #  define XFS_XATTR_LIST_MAX 65536
 490 #endif
 491
 492 /*
 493  * ioctl commands that are used by Linux filesystems
 494  */
 495 #define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 496 #define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 497 #define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 498
 499 /*
 500  * ioctl commands that replace IRIX fcntl()'s
 501  * For 'documentation' purposed more than anything else,
 502  * the "cmd #" field reflects the IRIX fcntl number.
 503  */
 504 #define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 505 #define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 506 #define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 507 #define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 508 #define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 509 #define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 510 #define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 511 #define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 512 #define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 513 #define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 514 #define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 515 #define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 516 #define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 517 /*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 518 /*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 519 #define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 520 #define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 521 #define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 522
 523 /*
 524  * ioctl commands that replace IRIX syssgi()'s
 525  */
 526 #define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 527 #define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 528 #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 529 #define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 530 #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 531 #define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 532 #define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 533 #define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 534 #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 535 #define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 536 #define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 537 #define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 538 #define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 539 #define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 540 #define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 541 #define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 542 #define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 543 #define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 544 /*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 545
 546 #define XFS_IOC_FREEZE               _IOWR('X', 119, int)       /* aka FIFREEZE */
 547 #define XFS_IOC_THAW                 _IOWR('X', 120, int)       /* aka FITHAW */
 548
 549 #define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 550 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 551 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 552 #define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 553 #define XFS_IOC_GOINGDOWN            _IOR ('X', 125, __uint32_t)
 554 /*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 555
 556 /* reflink ioctls; these MUST match the btrfs ioctl definitions */
 557 /* from struct btrfs_ioctl_clone_range_args */
 558 struct xfs_clone_args {
 559         __s64 src_fd;
 560         __u64 src_offset;
 561         __u64 src_length;
 562         __u64 dest_offset;
 563 };
 564
 565 /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
 566 #define XFS_EXTENT_DATA_SAME    0
 567 #define XFS_EXTENT_DATA_DIFFERS 1
 568
 569 /* from struct btrfs_ioctl_file_extent_same_info */
 570 struct xfs_extent_data_info {
 571         __s64 fd;               /* in - destination file */
 572         __u64 logical_offset;   /* in - start of extent in destination */
 573         __u64 bytes_deduped;    /* out - total # of bytes we were able
 574                                  * to dedupe from this file */
 575         /* status of this dedupe operation:
 576          * < 0 for error
 577          * == XFS_EXTENT_DATA_SAME if dedupe succeeds
 578          * == XFS_EXTENT_DATA_DIFFERS if data differs
 579          */
 580         __s32 status;           /* out - see above description */
 581         __u32 reserved;
 582 };
 583
 584 /* from struct btrfs_ioctl_file_extent_same_args */
 585 struct xfs_extent_data {
 586         __u64 logical_offset;   /* in - start of extent in source */
 587         __u64 length;           /* in - length of extent */
 588         __u16 dest_count;       /* in - total elements in info array */
 589         __u16 reserved1;
 590         __u32 reserved2;
 591         struct xfs_extent_data_info info[0];
 592 };
 593
 594 #define XFS_IOC_CLONE            _IOW (0x94, 9, int)
 595 #define XFS_IOC_CLONE_RANGE      _IOW (0x94, 13, struct xfs_clone_args)
 596 #define XFS_IOC_FILE_EXTENT_SAME _IOWR(0x94, 54, struct xfs_extent_data)
 597
 598 #ifndef HAVE_BBMACROS
 599 /*
 600  * Block I/O parameterization.  A basic block (BB) is the lowest size of
 601  * filesystem allocation, and must equal 512.  Length units given to bio
 602  * routines are in BB's.
 603  */
 604 #define BBSHIFT         9
 605 #define BBSIZE          (1<<BBSHIFT)
 606 #define BBMASK          (BBSIZE-1)
 607 #define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 608 #define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 609 #define BBTOB(bbs)      ((bbs) << BBSHIFT)
 610 #endif
 611
 612 #endif  /* __XFS_FS_H__ */