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 /*
  60  * Structure for XFS_IOC_GETBMAP.
  61  * On input, fill in bmv_offset and bmv_length of the first structure
  62  * to indicate the area of interest in the file, and bmv_entries with
  63  * the number of array elements given back.  The first structure is
  64  * updated on return to give the offset and length for the next call.
  65  */
  66 #ifndef HAVE_GETBMAP
  67 struct getbmap {
  68         __s64           bmv_offset;     /* file offset of segment in blocks */
  69         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  70         __s64           bmv_length;     /* length of segment, blocks        */
  71         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  72         __s32           bmv_entries;    /* # of entries filled in (output)  */
  73 };
  74 #endif
  75
  76 /*
  77  *      Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries
  78  *      are used exactly as in the getbmap structure.  The getbmapx structure
  79  *      has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
  80  *      is only used for the first structure.  It contains input flags
  81  *      specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
  82  *      in by the XFS_IOC_GETBMAPX command for each returned structure after
  83  *      the first.
  84  */
  85 #ifndef HAVE_GETBMAPX
  86 struct getbmapx {
  87         __s64           bmv_offset;     /* file offset of segment in blocks */
  88         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  89         __s64           bmv_length;     /* length of segment, blocks        */
  90         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  91         __s32           bmv_entries;    /* # of entries filled in (output). */
  92         __s32           bmv_iflags;     /* input flags (1st structure)      */
  93         __s32           bmv_oflags;     /* output flags (after 1st structure)*/
  94         __s32           bmv_unused1;    /* future use                       */
  95         __s32           bmv_unused2;    /* future use                       */
  96 };
  97 #endif
  98
  99 /*      bmv_iflags values - set by XFS_IOC_GETBMAPX caller.     */
 100 #define BMV_IF_ATTRFORK         0x1     /* return attr fork rather than data */
 101 #define BMV_IF_NO_DMAPI_READ    0x2     /* Do not generate DMAPI read event  */
 102 #define BMV_IF_PREALLOC         0x4     /* rtn status BMV_OF_PREALLOC if req */
 103 #define BMV_IF_DELALLOC         0x8     /* rtn status BMV_OF_DELALLOC if req */
 104 #define BMV_IF_NO_HOLES         0x10    /* Do not return holes */
 105 #define BMV_IF_COWFORK          0x20    /* return CoW fork rather than data */
 106 #define BMV_IF_VALID    \
 107         (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \
 108          BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)
 109
 110 /*      bmv_oflags values - returned for each non-header segment */
 111 #define BMV_OF_PREALLOC         0x1     /* segment = unwritten pre-allocation */
 112 #define BMV_OF_DELALLOC         0x2     /* segment = delayed allocation */
 113 #define BMV_OF_LAST             0x4     /* segment is the last in the file */
 114 #define BMV_OF_SHARED           0x8     /* segment shared with another file */
 115
 116 /*      fmr_owner special values for FS_IOC_GETFSMAP */
 117 #define XFS_FMR_OWN_FREE        FMR_OWN_FREE      /* free space */
 118 #define XFS_FMR_OWN_UNKNOWN     FMR_OWN_UNKNOWN   /* unknown owner */
 119 #define XFS_FMR_OWN_FS          FMR_OWNER('X', 1) /* static fs metadata */
 120 #define XFS_FMR_OWN_LOG         FMR_OWNER('X', 2) /* journalling log */
 121 #define XFS_FMR_OWN_AG          FMR_OWNER('X', 3) /* per-AG metadata */
 122 #define XFS_FMR_OWN_INOBT       FMR_OWNER('X', 4) /* inode btree blocks */
 123 #define XFS_FMR_OWN_INODES      FMR_OWNER('X', 5) /* inodes */
 124 #define XFS_FMR_OWN_REFC        FMR_OWNER('X', 6) /* refcount tree */
 125 #define XFS_FMR_OWN_COW         FMR_OWNER('X', 7) /* cow staging */
 126 #define XFS_FMR_OWN_DEFECTIVE   FMR_OWNER('X', 8) /* bad blocks */
 127
 128 /*
 129  * Structure for XFS_IOC_FSSETDM.
 130  * For use by backup and restore programs to set the XFS on-disk inode
 131  * fields di_dmevmask and di_dmstate.  These must be set to exactly and
 132  * only values previously obtained via xfs_bulkstat!  (Specifically the
 133  * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
 134  */
 135 #ifndef HAVE_FSDMIDATA
 136 struct fsdmidata {
 137         __u32           fsd_dmevmask;   /* corresponds to di_dmevmask */
 138         __u16           fsd_padding;
 139         __u16           fsd_dmstate;    /* corresponds to di_dmstate  */
 140 };
 141 #endif
 142
 143 /*
 144  * File segment locking set data type for 64 bit access.
 145  * Also used for all the RESV/FREE interfaces.
 146  */
 147 typedef struct xfs_flock64 {
 148         __s16           l_type;
 149         __s16           l_whence;
 150         __s64           l_start;
 151         __s64           l_len;          /* len == 0 means until end of file */
 152         __s32           l_sysid;
 153         __u32           l_pid;
 154         __s32           l_pad[4];       /* reserve area                     */
 155 } xfs_flock64_t;
 156
 157 /*
 158  * Output for XFS_IOC_FSGEOMETRY_V1
 159  */
 160 typedef struct xfs_fsop_geom_v1 {
 161         __u32           blocksize;      /* filesystem (data) block size */
 162         __u32           rtextsize;      /* realtime extent size         */
 163         __u32           agblocks;       /* fsblocks in an AG            */
 164         __u32           agcount;        /* number of allocation groups  */
 165         __u32           logblocks;      /* fsblocks in the log          */
 166         __u32           sectsize;       /* (data) sector size, bytes    */
 167         __u32           inodesize;      /* inode size in bytes          */
 168         __u32           imaxpct;        /* max allowed inode space(%)   */
 169         __u64           datablocks;     /* fsblocks in data subvolume   */
 170         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 171         __u64           rtextents;      /* rt extents in realtime subvol*/
 172         __u64           logstart;       /* starting fsblock of the log  */
 173         unsigned char   uuid[16];       /* unique id of the filesystem  */
 174         __u32           sunit;          /* stripe unit, fsblocks        */
 175         __u32           swidth;         /* stripe width, fsblocks       */
 176         __s32           version;        /* structure version            */
 177         __u32           flags;          /* superblock version flags     */
 178         __u32           logsectsize;    /* log sector size, bytes       */
 179         __u32           rtsectsize;     /* realtime sector size, bytes  */
 180         __u32           dirblocksize;   /* directory block size, bytes  */
 181 } xfs_fsop_geom_v1_t;
 182
 183 /*
 184  * Output for XFS_IOC_FSGEOMETRY
 185  */
 186 typedef struct xfs_fsop_geom {
 187         __u32           blocksize;      /* filesystem (data) block size */
 188         __u32           rtextsize;      /* realtime extent size         */
 189         __u32           agblocks;       /* fsblocks in an AG            */
 190         __u32           agcount;        /* number of allocation groups  */
 191         __u32           logblocks;      /* fsblocks in the log          */
 192         __u32           sectsize;       /* (data) sector size, bytes    */
 193         __u32           inodesize;      /* inode size in bytes          */
 194         __u32           imaxpct;        /* max allowed inode space(%)   */
 195         __u64           datablocks;     /* fsblocks in data subvolume   */
 196         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 197         __u64           rtextents;      /* rt extents in realtime subvol*/
 198         __u64           logstart;       /* starting fsblock of the log  */
 199         unsigned char   uuid[16];       /* unique id of the filesystem  */
 200         __u32           sunit;          /* stripe unit, fsblocks        */
 201         __u32           swidth;         /* stripe width, fsblocks       */
 202         __s32           version;        /* structure version            */
 203         __u32           flags;          /* superblock version flags     */
 204         __u32           logsectsize;    /* log sector size, bytes       */
 205         __u32           rtsectsize;     /* realtime sector size, bytes  */
 206         __u32           dirblocksize;   /* directory block size, bytes  */
 207         __u32           logsunit;       /* log stripe unit, bytes */
 208 } xfs_fsop_geom_t;
 209
 210 /* Output for XFS_FS_COUNTS */
 211 typedef struct xfs_fsop_counts {
 212         __u64   freedata;       /* free data section blocks */
 213         __u64   freertx;        /* free rt extents */
 214         __u64   freeino;        /* free inodes */
 215         __u64   allocino;       /* total allocated inodes */
 216 } xfs_fsop_counts_t;
 217
 218 /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
 219 typedef struct xfs_fsop_resblks {
 220         __u64  resblks;
 221         __u64  resblks_avail;
 222 } xfs_fsop_resblks_t;
 223
 224 #define XFS_FSOP_GEOM_VERSION   0
 225
 226 #define XFS_FSOP_GEOM_FLAGS_ATTR        0x0001  /* attributes in use    */
 227 #define XFS_FSOP_GEOM_FLAGS_NLINK       0x0002  /* 32-bit nlink values  */
 228 #define XFS_FSOP_GEOM_FLAGS_QUOTA       0x0004  /* quotas enabled       */
 229 #define XFS_FSOP_GEOM_FLAGS_IALIGN      0x0008  /* inode alignment      */
 230 #define XFS_FSOP_GEOM_FLAGS_DALIGN      0x0010  /* large data alignment */
 231 #define XFS_FSOP_GEOM_FLAGS_SHARED      0x0020  /* read-only shared     */
 232 #define XFS_FSOP_GEOM_FLAGS_EXTFLG      0x0040  /* special extent flag  */
 233 #define XFS_FSOP_GEOM_FLAGS_DIRV2       0x0080  /* directory version 2  */
 234 #define XFS_FSOP_GEOM_FLAGS_LOGV2       0x0100  /* log format version 2 */
 235 #define XFS_FSOP_GEOM_FLAGS_SECTOR      0x0200  /* sector sizes >1BB    */
 236 #define XFS_FSOP_GEOM_FLAGS_ATTR2       0x0400  /* inline attributes rework */
 237 #define XFS_FSOP_GEOM_FLAGS_PROJID32    0x0800  /* 32-bit project IDs   */
 238 #define XFS_FSOP_GEOM_FLAGS_DIRV2CI     0x1000  /* ASCII only CI names  */
 239 #define XFS_FSOP_GEOM_FLAGS_LAZYSB      0x4000  /* lazy superblock counters */
 240 #define XFS_FSOP_GEOM_FLAGS_V5SB        0x8000  /* version 5 superblock */
 241 #define XFS_FSOP_GEOM_FLAGS_FTYPE       0x10000 /* inode directory types */
 242 #define XFS_FSOP_GEOM_FLAGS_FINOBT      0x20000 /* free inode btree */
 243 #define XFS_FSOP_GEOM_FLAGS_SPINODES    0x40000 /* sparse inode chunks  */
 244 #define XFS_FSOP_GEOM_FLAGS_RMAPBT      0x80000 /* reverse mapping btree */
 245 #define XFS_FSOP_GEOM_FLAGS_REFLINK     0x100000 /* files can share blocks */
 246
 247 /*
 248  * Minimum and maximum sizes need for growth checks.
 249  *
 250  * Block counts are in units of filesystem blocks, not basic blocks.
 251  */
 252 #define XFS_MIN_AG_BLOCKS       64
 253 #define XFS_MIN_LOG_BLOCKS      512ULL
 254 #define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 255 #define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 256
 257 /* keep the maximum size under 2^31 by a small amount */
 258 #define XFS_MAX_LOG_BYTES \
 259         ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 260
 261 /* Used for sanity checks on superblock */
 262 #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
 263 #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *     \
 264                          (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 265
 266 /*
 267  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 268  */
 269 typedef struct xfs_growfs_data {
 270         __u64           newblocks;      /* new data subvol size, fsblocks */
 271         __u32           imaxpct;        /* new inode space percentage limit */
 272 } xfs_growfs_data_t;
 273
 274 typedef struct xfs_growfs_log {
 275         __u32           newblocks;      /* new log size, fsblocks */
 276         __u32           isint;          /* 1 if new log is internal */
 277 } xfs_growfs_log_t;
 278
 279 typedef struct xfs_growfs_rt {
 280         __u64           newblocks;      /* new realtime size, fsblocks */
 281         __u32           extsize;        /* new realtime extent size, fsblocks */
 282 } xfs_growfs_rt_t;
 283
 284
 285 /*
 286  * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 287  */
 288 typedef struct xfs_bstime {
 289         time_t          tv_sec;         /* seconds              */
 290         __s32           tv_nsec;        /* and nanoseconds      */
 291 } xfs_bstime_t;
 292
 293 typedef struct xfs_bstat {
 294         __u64           bs_ino;         /* inode number                 */
 295         __u16           bs_mode;        /* type and mode                */
 296         __u16           bs_nlink;       /* number of links              */
 297         __u32           bs_uid;         /* user id                      */
 298         __u32           bs_gid;         /* group id                     */
 299         __u32           bs_rdev;        /* device value                 */
 300         __s32           bs_blksize;     /* block size                   */
 301         __s64           bs_size;        /* file size                    */
 302         xfs_bstime_t    bs_atime;       /* access time                  */
 303         xfs_bstime_t    bs_mtime;       /* modify time                  */
 304         xfs_bstime_t    bs_ctime;       /* inode change time            */
 305         int64_t         bs_blocks;      /* number of blocks             */
 306         __u32           bs_xflags;      /* extended flags               */
 307         __s32           bs_extsize;     /* extent size                  */
 308         __s32           bs_extents;     /* number of extents            */
 309         __u32           bs_gen;         /* generation count             */
 310         __u16           bs_projid_lo;   /* lower part of project id     */
 311 #define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 312         __u16           bs_forkoff;     /* inode fork offset in bytes   */
 313         __u16           bs_projid_hi;   /* higher part of project id    */
 314         unsigned char   bs_pad[6];      /* pad space, unused            */
 315         __u32           bs_cowextsize;  /* cow extent size              */
 316         __u32           bs_dmevmask;    /* DMIG event mask              */
 317         __u16           bs_dmstate;     /* DMIG state info              */
 318         __u16           bs_aextents;    /* attribute number of extents  */
 319 } xfs_bstat_t;
 320
 321 /*
 322  * Project quota id helpers (previously projid was 16bit only
 323  * and using two 16bit values to hold new 32bit projid was choosen
 324  * to retain compatibility with "old" filesystems).
 325  */
 326 static inline uint32_t
 327 bstat_get_projid(struct xfs_bstat *bs)
 328 {
 329         return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 330 }
 331
 332 /*
 333  * The user-level BulkStat Request interface structure.
 334  */
 335 typedef struct xfs_fsop_bulkreq {
 336         __u64           __user *lastip; /* last inode # pointer         */
 337         __s32           icount;         /* count of entries in buffer   */
 338         void            __user *ubuffer;/* user buffer for inode desc.  */
 339         __s32           __user *ocount; /* output count pointer         */
 340 } xfs_fsop_bulkreq_t;
 341
 342
 343 /*
 344  * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 345  */
 346 typedef struct xfs_inogrp {
 347         __u64           xi_startino;    /* starting inode number        */
 348         __s32           xi_alloccount;  /* # bits set in allocmask      */
 349         __u64           xi_allocmask;   /* mask of allocated inodes     */
 350 } xfs_inogrp_t;
 351
 352
 353 /*
 354  * Error injection.
 355  */
 356 typedef struct xfs_error_injection {
 357         __s32           fd;
 358         __s32           errtag;
 359 } xfs_error_injection_t;
 360
 361
 362 /*
 363  * Speculative preallocation trimming.
 364  */
 365 #define XFS_EOFBLOCKS_VERSION           1
 366 struct xfs_fs_eofblocks {
 367         __u32           eof_version;
 368         __u32           eof_flags;
 369         uid_t           eof_uid;
 370         gid_t           eof_gid;
 371         prid_t          eof_prid;
 372         __u32           pad32;
 373         __u64           eof_min_file_size;
 374         __u64           pad64[12];
 375 };
 376
 377 /* eof_flags values */
 378 #define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 379 #define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 380 #define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 381 #define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 382 #define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 383 #define XFS_EOF_FLAGS_UNION             (1 << 5) /* union filter algorithm;
 384                                                   * kernel only, not included in
 385                                                   * valid mask */
 386 #define XFS_EOF_FLAGS_VALID     \
 387         (XFS_EOF_FLAGS_SYNC |   \
 388          XFS_EOF_FLAGS_UID |    \
 389          XFS_EOF_FLAGS_GID |    \
 390          XFS_EOF_FLAGS_PRID |   \
 391          XFS_EOF_FLAGS_MINFILESIZE)
 392
 393
 394 /*
 395  * The user-level Handle Request interface structure.
 396  */
 397 typedef struct xfs_fsop_handlereq {
 398         __u32           fd;             /* fd for FD_TO_HANDLE          */
 399         void            __user *path;   /* user pathname                */
 400         __u32           oflags;         /* open flags                   */
 401         void            __user *ihandle;/* user supplied handle         */
 402         __u32           ihandlen;       /* user supplied length         */
 403         void            __user *ohandle;/* user buffer for handle       */
 404         __u32           __user *ohandlen;/* user buffer length          */
 405 } xfs_fsop_handlereq_t;
 406
 407 /*
 408  * Compound structures for passing args through Handle Request interfaces
 409  * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 410  * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 411  *           XFS_IOC_ATTRMULTI_BY_HANDLE
 412  */
 413
 414 typedef struct xfs_fsop_setdm_handlereq {
 415         struct xfs_fsop_handlereq       hreq;   /* handle information   */
 416         struct fsdmidata                __user *data;   /* DMAPI data   */
 417 } xfs_fsop_setdm_handlereq_t;
 418
 419 typedef struct xfs_attrlist_cursor {
 420         __u32           opaque[4];
 421 } xfs_attrlist_cursor_t;
 422
 423 typedef struct xfs_fsop_attrlist_handlereq {
 424         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 425         struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 426         __u32                           flags;  /* which namespace to use */
 427         __u32                           buflen; /* length of buffer supplied */
 428         void                            __user *buffer; /* returned names */
 429 } xfs_fsop_attrlist_handlereq_t;
 430
 431 typedef struct xfs_attr_multiop {
 432         __u32           am_opcode;
 433 #define ATTR_OP_GET     1       /* return the indicated attr's value */
 434 #define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 435 #define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 436         __s32           am_error;
 437         void            __user *am_attrname;
 438         void            __user *am_attrvalue;
 439         __u32           am_length;
 440         __u32           am_flags;
 441 } xfs_attr_multiop_t;
 442
 443 typedef struct xfs_fsop_attrmulti_handlereq {
 444         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 445         __u32                           opcount;/* count of following multiop */
 446         struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 447 } xfs_fsop_attrmulti_handlereq_t;
 448
 449 /*
 450  * per machine unique filesystem identifier types.
 451  */
 452 typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 453
 454 typedef struct xfs_fid {
 455         __u16   fid_len;                /* length of remainder  */
 456         __u16   fid_pad;
 457         __u32   fid_gen;                /* generation number    */
 458         __u64   fid_ino;                /* 64 bits inode number */
 459 } xfs_fid_t;
 460
 461 typedef struct xfs_handle {
 462         union {
 463                 __s64       align;      /* force alignment of ha_fid     */
 464                 xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 465         } ha_u;
 466         xfs_fid_t       ha_fid;         /* file system specific file ID  */
 467 } xfs_handle_t;
 468 #define ha_fsid ha_u._ha_fsid
 469
 470 /*
 471  * Structure passed to XFS_IOC_SWAPEXT
 472  */
 473 typedef struct xfs_swapext
 474 {
 475         int64_t         sx_version;     /* version */
 476 #define XFS_SX_VERSION          0
 477         int64_t         sx_fdtarget;    /* fd of target file */
 478         int64_t         sx_fdtmp;       /* fd of tmp file */
 479         xfs_off_t       sx_offset;      /* offset into file */
 480         xfs_off_t       sx_length;      /* leng from offset */
 481         char            sx_pad[16];     /* pad space, unused */
 482         xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 483 } xfs_swapext_t;
 484
 485 /*
 486  * Flags for going down operation
 487  */
 488 #define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 489 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 490 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 491
 492 /* metadata scrubbing */
 493 struct xfs_scrub_metadata {
 494         __u32 sm_type;          /* What to check? */
 495         __u32 sm_flags;         /* flags; see below. */
 496         __u64 sm_ino;           /* inode number. */
 497         __u32 sm_gen;           /* inode generation. */
 498         __u32 sm_agno;          /* ag number. */
 499         __u64 sm_reserved[5];   /* pad to 64 bytes */
 500 };
 501
 502 /*
 503  * Metadata types and flags for scrub operation.
 504  */
 505
 506 /* Scrub subcommands. */
 507 #define XFS_SCRUB_TYPE_PROBE    0       /* presence test ioctl */
 508 #define XFS_SCRUB_TYPE_SB       1       /* superblock */
 509 #define XFS_SCRUB_TYPE_AGF      2       /* AG free header */
 510 #define XFS_SCRUB_TYPE_AGFL     3       /* AG free list */
 511 #define XFS_SCRUB_TYPE_AGI      4       /* AG inode header */
 512 #define XFS_SCRUB_TYPE_BNOBT    5       /* freesp by block btree */
 513 #define XFS_SCRUB_TYPE_CNTBT    6       /* freesp by length btree */
 514 #define XFS_SCRUB_TYPE_INOBT    7       /* inode btree */
 515 #define XFS_SCRUB_TYPE_FINOBT   8       /* free inode btree */
 516 #define XFS_SCRUB_TYPE_RMAPBT   9       /* reverse mapping btree */
 517 #define XFS_SCRUB_TYPE_REFCNTBT 10      /* reference count btree */
 518 #define XFS_SCRUB_TYPE_INODE    11      /* inode record */
 519 #define XFS_SCRUB_TYPE_BMBTD    12      /* data fork block mapping */
 520 #define XFS_SCRUB_TYPE_BMBTA    13      /* attr fork block mapping */
 521 #define XFS_SCRUB_TYPE_BMBTC    14      /* CoW fork block mapping */
 522 #define XFS_SCRUB_TYPE_DIR      15      /* directory */
 523 #define XFS_SCRUB_TYPE_XATTR    16      /* extended attribute */
 524 #define XFS_SCRUB_TYPE_SYMLINK  17      /* symbolic link */
 525 #define XFS_SCRUB_TYPE_PARENT   18      /* parent pointers */
 526 #define XFS_SCRUB_TYPE_RTBITMAP 19      /* realtime bitmap */
 527 #define XFS_SCRUB_TYPE_RTSUM    20      /* realtime summary */
 528
 529 /* Number of scrub subcommands. */
 530 #define XFS_SCRUB_TYPE_NR       21
 531
 532 /* i: Repair this metadata. */
 533 #define XFS_SCRUB_IFLAG_REPAIR          (1 << 0)
 534
 535 /* o: Metadata object needs repair. */
 536 #define XFS_SCRUB_OFLAG_CORRUPT         (1 << 1)
 537
 538 /*
 539  * o: Metadata object could be optimized.  It's not corrupt, but
 540  *    we could improve on it somehow.
 541  */
 542 #define XFS_SCRUB_OFLAG_PREEN           (1 << 2)
 543
 544 /* o: Cross-referencing failed. */
 545 #define XFS_SCRUB_OFLAG_XFAIL           (1 << 3)
 546
 547 /* o: Metadata object disagrees with cross-referenced metadata. */
 548 #define XFS_SCRUB_OFLAG_XCORRUPT        (1 << 4)
 549
 550 /* o: Scan was not complete. */
 551 #define XFS_SCRUB_OFLAG_INCOMPLETE      (1 << 5)
 552
 553 /* o: Metadata object looked funny but isn't corrupt. */
 554 #define XFS_SCRUB_OFLAG_WARNING         (1 << 6)
 555
 556 #define XFS_SCRUB_FLAGS_IN      (XFS_SCRUB_IFLAG_REPAIR)
 557 #define XFS_SCRUB_FLAGS_OUT     (XFS_SCRUB_OFLAG_CORRUPT | \
 558                                  XFS_SCRUB_OFLAG_PREEN | \
 559                                  XFS_SCRUB_OFLAG_XFAIL | \
 560                                  XFS_SCRUB_OFLAG_XCORRUPT | \
 561                                  XFS_SCRUB_OFLAG_INCOMPLETE | \
 562                                  XFS_SCRUB_OFLAG_WARNING)
 563 #define XFS_SCRUB_FLAGS_ALL     (XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
 564
 565 /*
 566  * ioctl limits
 567  */
 568 #ifdef XATTR_LIST_MAX
 569 #  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
 570 #else
 571 #  define XFS_XATTR_LIST_MAX 65536
 572 #endif
 573
 574 /*
 575  * ioctl commands that are used by Linux filesystems
 576  */
 577 #define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 578 #define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 579 #define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 580
 581 /*
 582  * ioctl commands that replace IRIX fcntl()'s
 583  * For 'documentation' purposed more than anything else,
 584  * the "cmd #" field reflects the IRIX fcntl number.
 585  */
 586 #define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 587 #define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 588 #define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 589 #define XFS_IOC_FSGETXATTR      FS_IOC_FSGETXATTR
 590 #define XFS_IOC_FSSETXATTR      FS_IOC_FSSETXATTR
 591 #define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 592 #define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 593 #define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 594 #define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 595 #define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 596 #define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 597 #define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 598 #define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 599 #define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 600 #define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 601 /*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 602 /*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 603 #define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 604 #define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 605 #define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 606 /*      XFS_IOC_GETFSMAP ------ hoisted 59         */
 607 #define XFS_IOC_SCRUB_METADATA  _IOWR('X', 60, struct xfs_scrub_metadata)
 608
 609 /*
 610  * ioctl commands that replace IRIX syssgi()'s
 611  */
 612 #define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 613 #define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 614 #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 615 #define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 616 #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 617 #define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 618 #define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 619 #define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 620 #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 621 #define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 622 #define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 623 #define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 624 #define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 625 #define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 626 #define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 627 #define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 628 #define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 629 #define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 630 /*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 631
 632 #define XFS_IOC_FREEZE               _IOWR('X', 119, int)       /* aka FIFREEZE */
 633 #define XFS_IOC_THAW                 _IOWR('X', 120, int)       /* aka FITHAW */
 634
 635 #define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 636 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 637 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 638 #define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 639 #define XFS_IOC_GOINGDOWN            _IOR ('X', 125, uint32_t)
 640 /*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 641
 642 /* reflink ioctls; these MUST match the btrfs ioctl definitions */
 643 /* from struct btrfs_ioctl_clone_range_args */
 644 struct xfs_clone_args {
 645         __s64 src_fd;
 646         __u64 src_offset;
 647         __u64 src_length;
 648         __u64 dest_offset;
 649 };
 650
 651 /* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
 652 #define XFS_EXTENT_DATA_SAME    0
 653 #define XFS_EXTENT_DATA_DIFFERS 1
 654
 655 /* from struct btrfs_ioctl_file_extent_same_info */
 656 struct xfs_extent_data_info {
 657         __s64 fd;               /* in - destination file */
 658         __u64 logical_offset;   /* in - start of extent in destination */
 659         __u64 bytes_deduped;    /* out - total # of bytes we were able
 660                                  * to dedupe from this file */
 661         /* status of this dedupe operation:
 662          * < 0 for error
 663          * == XFS_EXTENT_DATA_SAME if dedupe succeeds
 664          * == XFS_EXTENT_DATA_DIFFERS if data differs
 665          */
 666         __s32 status;           /* out - see above description */
 667         __u32 reserved;
 668 };
 669
 670 /* from struct btrfs_ioctl_file_extent_same_args */
 671 struct xfs_extent_data {
 672         __u64 logical_offset;   /* in - start of extent in source */
 673         __u64 length;           /* in - length of extent */
 674         __u16 dest_count;       /* in - total elements in info array */
 675         __u16 reserved1;
 676         __u32 reserved2;
 677         struct xfs_extent_data_info info[0];
 678 };
 679
 680 #define XFS_IOC_CLONE            _IOW (0x94, 9, int)
 681 #define XFS_IOC_CLONE_RANGE      _IOW (0x94, 13, struct xfs_clone_args)
 682 #define XFS_IOC_FILE_EXTENT_SAME _IOWR(0x94, 54, struct xfs_extent_data)
 683
 684 #ifndef HAVE_BBMACROS
 685 /*
 686  * Block I/O parameterization.  A basic block (BB) is the lowest size of
 687  * filesystem allocation, and must equal 512.  Length units given to bio
 688  * routines are in BB's.
 689  */
 690 #define BBSHIFT         9
 691 #define BBSIZE          (1<<BBSHIFT)
 692 #define BBMASK          (BBSIZE-1)
 693 #define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 694 #define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 695 #define BBTOB(bbs)      ((bbs) << BBSHIFT)
 696 #endif
 697
 698 #endif  /* __XFS_FS_H__ */