fs/xfs/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  * Structure for XFS_IOC_GETBMAP.
  40  * On input, fill in bmv_offset and bmv_length of the first structure
  41  * to indicate the area of interest in the file, and bmv_entries with
  42  * the number of array elements given back.  The first structure is
  43  * updated on return to give the offset and length for the next call.
  44  */
  45 #ifndef HAVE_GETBMAP
  46 struct getbmap {
  47         __s64           bmv_offset;     /* file offset of segment in blocks */
  48         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  49         __s64           bmv_length;     /* length of segment, blocks        */
  50         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  51         __s32           bmv_entries;    /* # of entries filled in (output)  */
  52 };
  53 #endif
  54
  55 /*
  56  *      Structure for XFS_IOC_GETBMAPX.  Fields bmv_offset through bmv_entries
  57  *      are used exactly as in the getbmap structure.  The getbmapx structure
  58  *      has additional bmv_iflags and bmv_oflags fields. The bmv_iflags field
  59  *      is only used for the first structure.  It contains input flags
  60  *      specifying XFS_IOC_GETBMAPX actions.  The bmv_oflags field is filled
  61  *      in by the XFS_IOC_GETBMAPX command for each returned structure after
  62  *      the first.
  63  */
  64 #ifndef HAVE_GETBMAPX
  65 struct getbmapx {
  66         __s64           bmv_offset;     /* file offset of segment in blocks */
  67         __s64           bmv_block;      /* starting block (64-bit daddr_t)  */
  68         __s64           bmv_length;     /* length of segment, blocks        */
  69         __s32           bmv_count;      /* # of entries in array incl. 1st  */
  70         __s32           bmv_entries;    /* # of entries filled in (output). */
  71         __s32           bmv_iflags;     /* input flags (1st structure)      */
  72         __s32           bmv_oflags;     /* output flags (after 1st structure)*/
  73         __s32           bmv_unused1;    /* future use                       */
  74         __s32           bmv_unused2;    /* future use                       */
  75 };
  76 #endif
  77
  78 /*      bmv_iflags values - set by XFS_IOC_GETBMAPX caller.     */
  79 #define BMV_IF_ATTRFORK         0x1     /* return attr fork rather than data */
  80 #define BMV_IF_NO_DMAPI_READ    0x2     /* Do not generate DMAPI read event  */
  81 #define BMV_IF_PREALLOC         0x4     /* rtn status BMV_OF_PREALLOC if req */
  82 #define BMV_IF_DELALLOC         0x8     /* rtn status BMV_OF_DELALLOC if req */
  83 #define BMV_IF_NO_HOLES         0x10    /* Do not return holes */
  84 #define BMV_IF_COWFORK          0x20    /* return CoW fork rather than data */
  85 #define BMV_IF_VALID    \
  86         (BMV_IF_ATTRFORK|BMV_IF_NO_DMAPI_READ|BMV_IF_PREALLOC|  \
  87          BMV_IF_DELALLOC|BMV_IF_NO_HOLES|BMV_IF_COWFORK)
  88
  89 /*      bmv_oflags values - returned for each non-header segment */
  90 #define BMV_OF_PREALLOC         0x1     /* segment = unwritten pre-allocation */
  91 #define BMV_OF_DELALLOC         0x2     /* segment = delayed allocation */
  92 #define BMV_OF_LAST             0x4     /* segment is the last in the file */
  93 #define BMV_OF_SHARED           0x8     /* segment shared with another file */
  94
  95 /*      fmr_owner special values for FS_IOC_GETFSMAP */
  96 #define XFS_FMR_OWN_FREE        FMR_OWN_FREE      /* free space */
  97 #define XFS_FMR_OWN_UNKNOWN     FMR_OWN_UNKNOWN   /* unknown owner */
  98 #define XFS_FMR_OWN_FS          FMR_OWNER('X', 1) /* static fs metadata */
  99 #define XFS_FMR_OWN_LOG         FMR_OWNER('X', 2) /* journalling log */
 100 #define XFS_FMR_OWN_AG          FMR_OWNER('X', 3) /* per-AG metadata */
 101 #define XFS_FMR_OWN_INOBT       FMR_OWNER('X', 4) /* inode btree blocks */
 102 #define XFS_FMR_OWN_INODES      FMR_OWNER('X', 5) /* inodes */
 103 #define XFS_FMR_OWN_REFC        FMR_OWNER('X', 6) /* refcount tree */
 104 #define XFS_FMR_OWN_COW         FMR_OWNER('X', 7) /* cow staging */
 105 #define XFS_FMR_OWN_DEFECTIVE   FMR_OWNER('X', 8) /* bad blocks */
 106
 107 /*
 108  * Structure for XFS_IOC_FSSETDM.
 109  * For use by backup and restore programs to set the XFS on-disk inode
 110  * fields di_dmevmask and di_dmstate.  These must be set to exactly and
 111  * only values previously obtained via xfs_bulkstat!  (Specifically the
 112  * xfs_bstat_t fields bs_dmevmask and bs_dmstate.)
 113  */
 114 #ifndef HAVE_FSDMIDATA
 115 struct fsdmidata {
 116         __u32           fsd_dmevmask;   /* corresponds to di_dmevmask */
 117         __u16           fsd_padding;
 118         __u16           fsd_dmstate;    /* corresponds to di_dmstate  */
 119 };
 120 #endif
 121
 122 /*
 123  * File segment locking set data type for 64 bit access.
 124  * Also used for all the RESV/FREE interfaces.
 125  */
 126 typedef struct xfs_flock64 {
 127         __s16           l_type;
 128         __s16           l_whence;
 129         __s64           l_start;
 130         __s64           l_len;          /* len == 0 means until end of file */
 131         __s32           l_sysid;
 132         __u32           l_pid;
 133         __s32           l_pad[4];       /* reserve area                     */
 134 } xfs_flock64_t;
 135
 136 /*
 137  * Output for XFS_IOC_FSGEOMETRY_V1
 138  */
 139 typedef struct xfs_fsop_geom_v1 {
 140         __u32           blocksize;      /* filesystem (data) block size */
 141         __u32           rtextsize;      /* realtime extent size         */
 142         __u32           agblocks;       /* fsblocks in an AG            */
 143         __u32           agcount;        /* number of allocation groups  */
 144         __u32           logblocks;      /* fsblocks in the log          */
 145         __u32           sectsize;       /* (data) sector size, bytes    */
 146         __u32           inodesize;      /* inode size in bytes          */
 147         __u32           imaxpct;        /* max allowed inode space(%)   */
 148         __u64           datablocks;     /* fsblocks in data subvolume   */
 149         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 150         __u64           rtextents;      /* rt extents in realtime subvol*/
 151         __u64           logstart;       /* starting fsblock of the log  */
 152         unsigned char   uuid[16];       /* unique id of the filesystem  */
 153         __u32           sunit;          /* stripe unit, fsblocks        */
 154         __u32           swidth;         /* stripe width, fsblocks       */
 155         __s32           version;        /* structure version            */
 156         __u32           flags;          /* superblock version flags     */
 157         __u32           logsectsize;    /* log sector size, bytes       */
 158         __u32           rtsectsize;     /* realtime sector size, bytes  */
 159         __u32           dirblocksize;   /* directory block size, bytes  */
 160 } xfs_fsop_geom_v1_t;
 161
 162 /*
 163  * Output for XFS_IOC_FSGEOMETRY
 164  */
 165 typedef struct xfs_fsop_geom {
 166         __u32           blocksize;      /* filesystem (data) block size */
 167         __u32           rtextsize;      /* realtime extent size         */
 168         __u32           agblocks;       /* fsblocks in an AG            */
 169         __u32           agcount;        /* number of allocation groups  */
 170         __u32           logblocks;      /* fsblocks in the log          */
 171         __u32           sectsize;       /* (data) sector size, bytes    */
 172         __u32           inodesize;      /* inode size in bytes          */
 173         __u32           imaxpct;        /* max allowed inode space(%)   */
 174         __u64           datablocks;     /* fsblocks in data subvolume   */
 175         __u64           rtblocks;       /* fsblocks in realtime subvol  */
 176         __u64           rtextents;      /* rt extents in realtime subvol*/
 177         __u64           logstart;       /* starting fsblock of the log  */
 178         unsigned char   uuid[16];       /* unique id of the filesystem  */
 179         __u32           sunit;          /* stripe unit, fsblocks        */
 180         __u32           swidth;         /* stripe width, fsblocks       */
 181         __s32           version;        /* structure version            */
 182         __u32           flags;          /* superblock version flags     */
 183         __u32           logsectsize;    /* log sector size, bytes       */
 184         __u32           rtsectsize;     /* realtime sector size, bytes  */
 185         __u32           dirblocksize;   /* directory block size, bytes  */
 186         __u32           logsunit;       /* log stripe unit, bytes */
 187 } xfs_fsop_geom_t;
 188
 189 /* Output for XFS_FS_COUNTS */
 190 typedef struct xfs_fsop_counts {
 191         __u64   freedata;       /* free data section blocks */
 192         __u64   freertx;        /* free rt extents */
 193         __u64   freeino;        /* free inodes */
 194         __u64   allocino;       /* total allocated inodes */
 195 } xfs_fsop_counts_t;
 196
 197 /* Input/Output for XFS_GET_RESBLKS and XFS_SET_RESBLKS */
 198 typedef struct xfs_fsop_resblks {
 199         __u64  resblks;
 200         __u64  resblks_avail;
 201 } xfs_fsop_resblks_t;
 202
 203 #define XFS_FSOP_GEOM_VERSION   0
 204
 205 #define XFS_FSOP_GEOM_FLAGS_ATTR        0x0001  /* attributes in use    */
 206 #define XFS_FSOP_GEOM_FLAGS_NLINK       0x0002  /* 32-bit nlink values  */
 207 #define XFS_FSOP_GEOM_FLAGS_QUOTA       0x0004  /* quotas enabled       */
 208 #define XFS_FSOP_GEOM_FLAGS_IALIGN      0x0008  /* inode alignment      */
 209 #define XFS_FSOP_GEOM_FLAGS_DALIGN      0x0010  /* large data alignment */
 210 #define XFS_FSOP_GEOM_FLAGS_SHARED      0x0020  /* read-only shared     */
 211 #define XFS_FSOP_GEOM_FLAGS_EXTFLG      0x0040  /* special extent flag  */
 212 #define XFS_FSOP_GEOM_FLAGS_DIRV2       0x0080  /* directory version 2  */
 213 #define XFS_FSOP_GEOM_FLAGS_LOGV2       0x0100  /* log format version 2 */
 214 #define XFS_FSOP_GEOM_FLAGS_SECTOR      0x0200  /* sector sizes >1BB    */
 215 #define XFS_FSOP_GEOM_FLAGS_ATTR2       0x0400  /* inline attributes rework */
 216 #define XFS_FSOP_GEOM_FLAGS_PROJID32    0x0800  /* 32-bit project IDs   */
 217 #define XFS_FSOP_GEOM_FLAGS_DIRV2CI     0x1000  /* ASCII only CI names  */
 218 #define XFS_FSOP_GEOM_FLAGS_LAZYSB      0x4000  /* lazy superblock counters */
 219 #define XFS_FSOP_GEOM_FLAGS_V5SB        0x8000  /* version 5 superblock */
 220 #define XFS_FSOP_GEOM_FLAGS_FTYPE       0x10000 /* inode directory types */
 221 #define XFS_FSOP_GEOM_FLAGS_FINOBT      0x20000 /* free inode btree */
 222 #define XFS_FSOP_GEOM_FLAGS_SPINODES    0x40000 /* sparse inode chunks  */
 223 #define XFS_FSOP_GEOM_FLAGS_RMAPBT      0x80000 /* reverse mapping btree */
 224 #define XFS_FSOP_GEOM_FLAGS_REFLINK     0x100000 /* files can share blocks */
 225
 226 /*
 227  * Minimum and maximum sizes need for growth checks.
 228  *
 229  * Block counts are in units of filesystem blocks, not basic blocks.
 230  */
 231 #define XFS_MIN_AG_BLOCKS       64
 232 #define XFS_MIN_LOG_BLOCKS      512ULL
 233 #define XFS_MAX_LOG_BLOCKS      (1024 * 1024ULL)
 234 #define XFS_MIN_LOG_BYTES       (10 * 1024 * 1024ULL)
 235
 236 /* keep the maximum size under 2^31 by a small amount */
 237 #define XFS_MAX_LOG_BYTES \
 238         ((2 * 1024 * 1024 * 1024ULL) - XFS_MIN_LOG_BYTES)
 239
 240 /* Used for sanity checks on superblock */
 241 #define XFS_MAX_DBLOCKS(s) ((xfs_rfsblock_t)(s)->sb_agcount * (s)->sb_agblocks)
 242 #define XFS_MIN_DBLOCKS(s) ((xfs_rfsblock_t)((s)->sb_agcount - 1) *     \
 243                          (s)->sb_agblocks + XFS_MIN_AG_BLOCKS)
 244
 245 /*
 246  * Structures for XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG & XFS_IOC_FSGROWFSRT
 247  */
 248 typedef struct xfs_growfs_data {
 249         __u64           newblocks;      /* new data subvol size, fsblocks */
 250         __u32           imaxpct;        /* new inode space percentage limit */
 251 } xfs_growfs_data_t;
 252
 253 typedef struct xfs_growfs_log {
 254         __u32           newblocks;      /* new log size, fsblocks */
 255         __u32           isint;          /* 1 if new log is internal */
 256 } xfs_growfs_log_t;
 257
 258 typedef struct xfs_growfs_rt {
 259         __u64           newblocks;      /* new realtime size, fsblocks */
 260         __u32           extsize;        /* new realtime extent size, fsblocks */
 261 } xfs_growfs_rt_t;
 262
 263
 264 /*
 265  * Structures returned from ioctl XFS_IOC_FSBULKSTAT & XFS_IOC_FSBULKSTAT_SINGLE
 266  */
 267 typedef struct xfs_bstime {
 268         time_t          tv_sec;         /* seconds              */
 269         __s32           tv_nsec;        /* and nanoseconds      */
 270 } xfs_bstime_t;
 271
 272 typedef struct xfs_bstat {
 273         __u64           bs_ino;         /* inode number                 */
 274         __u16           bs_mode;        /* type and mode                */
 275         __u16           bs_nlink;       /* number of links              */
 276         __u32           bs_uid;         /* user id                      */
 277         __u32           bs_gid;         /* group id                     */
 278         __u32           bs_rdev;        /* device value                 */
 279         __s32           bs_blksize;     /* block size                   */
 280         __s64           bs_size;        /* file size                    */
 281         xfs_bstime_t    bs_atime;       /* access time                  */
 282         xfs_bstime_t    bs_mtime;       /* modify time                  */
 283         xfs_bstime_t    bs_ctime;       /* inode change time            */
 284         int64_t         bs_blocks;      /* number of blocks             */
 285         __u32           bs_xflags;      /* extended flags               */
 286         __s32           bs_extsize;     /* extent size                  */
 287         __s32           bs_extents;     /* number of extents            */
 288         __u32           bs_gen;         /* generation count             */
 289         __u16           bs_projid_lo;   /* lower part of project id     */
 290 #define bs_projid       bs_projid_lo    /* (previously just bs_projid)  */
 291         __u16           bs_forkoff;     /* inode fork offset in bytes   */
 292         __u16           bs_projid_hi;   /* higher part of project id    */
 293         unsigned char   bs_pad[6];      /* pad space, unused            */
 294         __u32           bs_cowextsize;  /* cow extent size              */
 295         __u32           bs_dmevmask;    /* DMIG event mask              */
 296         __u16           bs_dmstate;     /* DMIG state info              */
 297         __u16           bs_aextents;    /* attribute number of extents  */
 298 } xfs_bstat_t;
 299
 300 /*
 301  * Project quota id helpers (previously projid was 16bit only
 302  * and using two 16bit values to hold new 32bit projid was choosen
 303  * to retain compatibility with "old" filesystems).
 304  */
 305 static inline uint32_t
 306 bstat_get_projid(struct xfs_bstat *bs)
 307 {
 308         return (uint32_t)bs->bs_projid_hi << 16 | bs->bs_projid_lo;
 309 }
 310
 311 /*
 312  * The user-level BulkStat Request interface structure.
 313  */
 314 typedef struct xfs_fsop_bulkreq {
 315         __u64           __user *lastip; /* last inode # pointer         */
 316         __s32           icount;         /* count of entries in buffer   */
 317         void            __user *ubuffer;/* user buffer for inode desc.  */
 318         __s32           __user *ocount; /* output count pointer         */
 319 } xfs_fsop_bulkreq_t;
 320
 321
 322 /*
 323  * Structures returned from xfs_inumbers routine (XFS_IOC_FSINUMBERS).
 324  */
 325 typedef struct xfs_inogrp {
 326         __u64           xi_startino;    /* starting inode number        */
 327         __s32           xi_alloccount;  /* # bits set in allocmask      */
 328         __u64           xi_allocmask;   /* mask of allocated inodes     */
 329 } xfs_inogrp_t;
 330
 331
 332 /*
 333  * Error injection.
 334  */
 335 typedef struct xfs_error_injection {
 336         __s32           fd;
 337         __s32           errtag;
 338 } xfs_error_injection_t;
 339
 340
 341 /*
 342  * Speculative preallocation trimming.
 343  */
 344 #define XFS_EOFBLOCKS_VERSION           1
 345 struct xfs_fs_eofblocks {
 346         __u32           eof_version;
 347         __u32           eof_flags;
 348         uid_t           eof_uid;
 349         gid_t           eof_gid;
 350         prid_t          eof_prid;
 351         __u32           pad32;
 352         __u64           eof_min_file_size;
 353         __u64           pad64[12];
 354 };
 355
 356 /* eof_flags values */
 357 #define XFS_EOF_FLAGS_SYNC              (1 << 0) /* sync/wait mode scan */
 358 #define XFS_EOF_FLAGS_UID               (1 << 1) /* filter by uid */
 359 #define XFS_EOF_FLAGS_GID               (1 << 2) /* filter by gid */
 360 #define XFS_EOF_FLAGS_PRID              (1 << 3) /* filter by project id */
 361 #define XFS_EOF_FLAGS_MINFILESIZE       (1 << 4) /* filter by min file size */
 362 #define XFS_EOF_FLAGS_UNION             (1 << 5) /* union filter algorithm;
 363                                                   * kernel only, not included in
 364                                                   * valid mask */
 365 #define XFS_EOF_FLAGS_VALID     \
 366         (XFS_EOF_FLAGS_SYNC |   \
 367          XFS_EOF_FLAGS_UID |    \
 368          XFS_EOF_FLAGS_GID |    \
 369          XFS_EOF_FLAGS_PRID |   \
 370          XFS_EOF_FLAGS_MINFILESIZE)
 371
 372
 373 /*
 374  * The user-level Handle Request interface structure.
 375  */
 376 typedef struct xfs_fsop_handlereq {
 377         __u32           fd;             /* fd for FD_TO_HANDLE          */
 378         void            __user *path;   /* user pathname                */
 379         __u32           oflags;         /* open flags                   */
 380         void            __user *ihandle;/* user supplied handle         */
 381         __u32           ihandlen;       /* user supplied length         */
 382         void            __user *ohandle;/* user buffer for handle       */
 383         __u32           __user *ohandlen;/* user buffer length          */
 384 } xfs_fsop_handlereq_t;
 385
 386 /*
 387  * Compound structures for passing args through Handle Request interfaces
 388  * xfs_fssetdm_by_handle, xfs_attrlist_by_handle, xfs_attrmulti_by_handle
 389  * - ioctls: XFS_IOC_FSSETDM_BY_HANDLE, XFS_IOC_ATTRLIST_BY_HANDLE, and
 390  *           XFS_IOC_ATTRMULTI_BY_HANDLE
 391  */
 392
 393 typedef struct xfs_fsop_setdm_handlereq {
 394         struct xfs_fsop_handlereq       hreq;   /* handle information   */
 395         struct fsdmidata                __user *data;   /* DMAPI data   */
 396 } xfs_fsop_setdm_handlereq_t;
 397
 398 typedef struct xfs_attrlist_cursor {
 399         __u32           opaque[4];
 400 } xfs_attrlist_cursor_t;
 401
 402 typedef struct xfs_fsop_attrlist_handlereq {
 403         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 404         struct xfs_attrlist_cursor      pos; /* opaque cookie, list offset */
 405         __u32                           flags;  /* which namespace to use */
 406         __u32                           buflen; /* length of buffer supplied */
 407         void                            __user *buffer; /* returned names */
 408 } xfs_fsop_attrlist_handlereq_t;
 409
 410 typedef struct xfs_attr_multiop {
 411         __u32           am_opcode;
 412 #define ATTR_OP_GET     1       /* return the indicated attr's value */
 413 #define ATTR_OP_SET     2       /* set/create the indicated attr/value pair */
 414 #define ATTR_OP_REMOVE  3       /* remove the indicated attr */
 415         __s32           am_error;
 416         void            __user *am_attrname;
 417         void            __user *am_attrvalue;
 418         __u32           am_length;
 419         __u32           am_flags;
 420 } xfs_attr_multiop_t;
 421
 422 typedef struct xfs_fsop_attrmulti_handlereq {
 423         struct xfs_fsop_handlereq       hreq; /* handle interface structure */
 424         __u32                           opcount;/* count of following multiop */
 425         struct xfs_attr_multiop         __user *ops; /* attr_multi data */
 426 } xfs_fsop_attrmulti_handlereq_t;
 427
 428 /*
 429  * per machine unique filesystem identifier types.
 430  */
 431 typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
 432
 433 typedef struct xfs_fid {
 434         __u16   fid_len;                /* length of remainder  */
 435         __u16   fid_pad;
 436         __u32   fid_gen;                /* generation number    */
 437         __u64   fid_ino;                /* 64 bits inode number */
 438 } xfs_fid_t;
 439
 440 typedef struct xfs_handle {
 441         union {
 442                 __s64       align;      /* force alignment of ha_fid     */
 443                 xfs_fsid_t  _ha_fsid;   /* unique file system identifier */
 444         } ha_u;
 445         xfs_fid_t       ha_fid;         /* file system specific file ID  */
 446 } xfs_handle_t;
 447 #define ha_fsid ha_u._ha_fsid
 448
 449 /*
 450  * Structure passed to XFS_IOC_SWAPEXT
 451  */
 452 typedef struct xfs_swapext
 453 {
 454         int64_t         sx_version;     /* version */
 455 #define XFS_SX_VERSION          0
 456         int64_t         sx_fdtarget;    /* fd of target file */
 457         int64_t         sx_fdtmp;       /* fd of tmp file */
 458         xfs_off_t       sx_offset;      /* offset into file */
 459         xfs_off_t       sx_length;      /* leng from offset */
 460         char            sx_pad[16];     /* pad space, unused */
 461         xfs_bstat_t     sx_stat;        /* stat of target b4 copy */
 462 } xfs_swapext_t;
 463
 464 /*
 465  * Flags for going down operation
 466  */
 467 #define XFS_FSOP_GOING_FLAGS_DEFAULT            0x0     /* going down */
 468 #define XFS_FSOP_GOING_FLAGS_LOGFLUSH           0x1     /* flush log but not data */
 469 #define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH         0x2     /* don't flush log nor data */
 470
 471 /* metadata scrubbing */
 472 struct xfs_scrub_metadata {
 473         __u32 sm_type;          /* What to check? */
 474         __u32 sm_flags;         /* flags; see below. */
 475         __u64 sm_ino;           /* inode number. */
 476         __u32 sm_gen;           /* inode generation. */
 477         __u32 sm_agno;          /* ag number. */
 478         __u64 sm_reserved[5];   /* pad to 64 bytes */
 479 };
 480
 481 /*
 482  * Metadata types and flags for scrub operation.
 483  */
 484
 485 /* Scrub subcommands. */
 486 #define XFS_SCRUB_TYPE_PROBE    0       /* presence test ioctl */
 487 #define XFS_SCRUB_TYPE_SB       1       /* superblock */
 488 #define XFS_SCRUB_TYPE_AGF      2       /* AG free header */
 489 #define XFS_SCRUB_TYPE_AGFL     3       /* AG free list */
 490 #define XFS_SCRUB_TYPE_AGI      4       /* AG inode header */
 491 #define XFS_SCRUB_TYPE_BNOBT    5       /* freesp by block btree */
 492 #define XFS_SCRUB_TYPE_CNTBT    6       /* freesp by length btree */
 493 #define XFS_SCRUB_TYPE_INOBT    7       /* inode btree */
 494 #define XFS_SCRUB_TYPE_FINOBT   8       /* free inode btree */
 495 #define XFS_SCRUB_TYPE_RMAPBT   9       /* reverse mapping btree */
 496 #define XFS_SCRUB_TYPE_REFCNTBT 10      /* reference count btree */
 497 #define XFS_SCRUB_TYPE_INODE    11      /* inode record */
 498 #define XFS_SCRUB_TYPE_BMBTD    12      /* data fork block mapping */
 499 #define XFS_SCRUB_TYPE_BMBTA    13      /* attr fork block mapping */
 500 #define XFS_SCRUB_TYPE_BMBTC    14      /* CoW fork block mapping */
 501 #define XFS_SCRUB_TYPE_DIR      15      /* directory */
 502 #define XFS_SCRUB_TYPE_XATTR    16      /* extended attribute */
 503 #define XFS_SCRUB_TYPE_SYMLINK  17      /* symbolic link */
 504 #define XFS_SCRUB_TYPE_PARENT   18      /* parent pointers */
 505 #define XFS_SCRUB_TYPE_RTBITMAP 19      /* realtime bitmap */
 506 #define XFS_SCRUB_TYPE_RTSUM    20      /* realtime summary */
 507 #define XFS_SCRUB_TYPE_UQUOTA   21      /* user quotas */
 508 #define XFS_SCRUB_TYPE_GQUOTA   22      /* group quotas */
 509 #define XFS_SCRUB_TYPE_PQUOTA   23      /* project quotas */
 510
 511 /* Number of scrub subcommands. */
 512 #define XFS_SCRUB_TYPE_NR       24
 513
 514 /* i: Repair this metadata. */
 515 #define XFS_SCRUB_IFLAG_REPAIR          (1 << 0)
 516
 517 /* o: Metadata object needs repair. */
 518 #define XFS_SCRUB_OFLAG_CORRUPT         (1 << 1)
 519
 520 /*
 521  * o: Metadata object could be optimized.  It's not corrupt, but
 522  *    we could improve on it somehow.
 523  */
 524 #define XFS_SCRUB_OFLAG_PREEN           (1 << 2)
 525
 526 /* o: Cross-referencing failed. */
 527 #define XFS_SCRUB_OFLAG_XFAIL           (1 << 3)
 528
 529 /* o: Metadata object disagrees with cross-referenced metadata. */
 530 #define XFS_SCRUB_OFLAG_XCORRUPT        (1 << 4)
 531
 532 /* o: Scan was not complete. */
 533 #define XFS_SCRUB_OFLAG_INCOMPLETE      (1 << 5)
 534
 535 /* o: Metadata object looked funny but isn't corrupt. */
 536 #define XFS_SCRUB_OFLAG_WARNING         (1 << 6)
 537
 538 #define XFS_SCRUB_FLAGS_IN      (XFS_SCRUB_IFLAG_REPAIR)
 539 #define XFS_SCRUB_FLAGS_OUT     (XFS_SCRUB_OFLAG_CORRUPT | \
 540                                  XFS_SCRUB_OFLAG_PREEN | \
 541                                  XFS_SCRUB_OFLAG_XFAIL | \
 542                                  XFS_SCRUB_OFLAG_XCORRUPT | \
 543                                  XFS_SCRUB_OFLAG_INCOMPLETE | \
 544                                  XFS_SCRUB_OFLAG_WARNING)
 545 #define XFS_SCRUB_FLAGS_ALL     (XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
 546
 547 /*
 548  * ioctl limits
 549  */
 550 #ifdef XATTR_LIST_MAX
 551 #  define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
 552 #else
 553 #  define XFS_XATTR_LIST_MAX 65536
 554 #endif
 555
 556
 557 /*
 558  * ioctl commands that are used by Linux filesystems
 559  */
 560 #define XFS_IOC_GETXFLAGS       FS_IOC_GETFLAGS
 561 #define XFS_IOC_SETXFLAGS       FS_IOC_SETFLAGS
 562 #define XFS_IOC_GETVERSION      FS_IOC_GETVERSION
 563
 564 /*
 565  * ioctl commands that replace IRIX fcntl()'s
 566  * For 'documentation' purposed more than anything else,
 567  * the "cmd #" field reflects the IRIX fcntl number.
 568  */
 569 #define XFS_IOC_ALLOCSP         _IOW ('X', 10, struct xfs_flock64)
 570 #define XFS_IOC_FREESP          _IOW ('X', 11, struct xfs_flock64)
 571 #define XFS_IOC_DIOINFO         _IOR ('X', 30, struct dioattr)
 572 #define XFS_IOC_FSGETXATTR      FS_IOC_FSGETXATTR
 573 #define XFS_IOC_FSSETXATTR      FS_IOC_FSSETXATTR
 574 #define XFS_IOC_ALLOCSP64       _IOW ('X', 36, struct xfs_flock64)
 575 #define XFS_IOC_FREESP64        _IOW ('X', 37, struct xfs_flock64)
 576 #define XFS_IOC_GETBMAP         _IOWR('X', 38, struct getbmap)
 577 #define XFS_IOC_FSSETDM         _IOW ('X', 39, struct fsdmidata)
 578 #define XFS_IOC_RESVSP          _IOW ('X', 40, struct xfs_flock64)
 579 #define XFS_IOC_UNRESVSP        _IOW ('X', 41, struct xfs_flock64)
 580 #define XFS_IOC_RESVSP64        _IOW ('X', 42, struct xfs_flock64)
 581 #define XFS_IOC_UNRESVSP64      _IOW ('X', 43, struct xfs_flock64)
 582 #define XFS_IOC_GETBMAPA        _IOWR('X', 44, struct getbmap)
 583 #define XFS_IOC_FSGETXATTRA     _IOR ('X', 45, struct fsxattr)
 584 /*      XFS_IOC_SETBIOSIZE ---- deprecated 46      */
 585 /*      XFS_IOC_GETBIOSIZE ---- deprecated 47      */
 586 #define XFS_IOC_GETBMAPX        _IOWR('X', 56, struct getbmap)
 587 #define XFS_IOC_ZERO_RANGE      _IOW ('X', 57, struct xfs_flock64)
 588 #define XFS_IOC_FREE_EOFBLOCKS  _IOR ('X', 58, struct xfs_fs_eofblocks)
 589 /*      XFS_IOC_GETFSMAP ------ hoisted 59         */
 590 #define XFS_IOC_SCRUB_METADATA  _IOWR('X', 60, struct xfs_scrub_metadata)
 591
 592 /*
 593  * ioctl commands that replace IRIX syssgi()'s
 594  */
 595 #define XFS_IOC_FSGEOMETRY_V1        _IOR ('X', 100, struct xfs_fsop_geom_v1)
 596 #define XFS_IOC_FSBULKSTAT           _IOWR('X', 101, struct xfs_fsop_bulkreq)
 597 #define XFS_IOC_FSBULKSTAT_SINGLE    _IOWR('X', 102, struct xfs_fsop_bulkreq)
 598 #define XFS_IOC_FSINUMBERS           _IOWR('X', 103, struct xfs_fsop_bulkreq)
 599 #define XFS_IOC_PATH_TO_FSHANDLE     _IOWR('X', 104, struct xfs_fsop_handlereq)
 600 #define XFS_IOC_PATH_TO_HANDLE       _IOWR('X', 105, struct xfs_fsop_handlereq)
 601 #define XFS_IOC_FD_TO_HANDLE         _IOWR('X', 106, struct xfs_fsop_handlereq)
 602 #define XFS_IOC_OPEN_BY_HANDLE       _IOWR('X', 107, struct xfs_fsop_handlereq)
 603 #define XFS_IOC_READLINK_BY_HANDLE   _IOWR('X', 108, struct xfs_fsop_handlereq)
 604 #define XFS_IOC_SWAPEXT              _IOWR('X', 109, struct xfs_swapext)
 605 #define XFS_IOC_FSGROWFSDATA         _IOW ('X', 110, struct xfs_growfs_data)
 606 #define XFS_IOC_FSGROWFSLOG          _IOW ('X', 111, struct xfs_growfs_log)
 607 #define XFS_IOC_FSGROWFSRT           _IOW ('X', 112, struct xfs_growfs_rt)
 608 #define XFS_IOC_FSCOUNTS             _IOR ('X', 113, struct xfs_fsop_counts)
 609 #define XFS_IOC_SET_RESBLKS          _IOWR('X', 114, struct xfs_fsop_resblks)
 610 #define XFS_IOC_GET_RESBLKS          _IOR ('X', 115, struct xfs_fsop_resblks)
 611 #define XFS_IOC_ERROR_INJECTION      _IOW ('X', 116, struct xfs_error_injection)
 612 #define XFS_IOC_ERROR_CLEARALL       _IOW ('X', 117, struct xfs_error_injection)
 613 /*      XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118      */
 614
 615 #define XFS_IOC_FREEZE               _IOWR('X', 119, int)       /* aka FIFREEZE */
 616 #define XFS_IOC_THAW                 _IOWR('X', 120, int)       /* aka FITHAW */
 617
 618 #define XFS_IOC_FSSETDM_BY_HANDLE    _IOW ('X', 121, struct xfs_fsop_setdm_handlereq)
 619 #define XFS_IOC_ATTRLIST_BY_HANDLE   _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq)
 620 #define XFS_IOC_ATTRMULTI_BY_HANDLE  _IOW ('X', 123, struct xfs_fsop_attrmulti_handlereq)
 621 #define XFS_IOC_FSGEOMETRY           _IOR ('X', 124, struct xfs_fsop_geom)
 622 #define XFS_IOC_GOINGDOWN            _IOR ('X', 125, uint32_t)
 623 /*      XFS_IOC_GETFSUUID ---------- deprecated 140      */
 624
 625
 626 #ifndef HAVE_BBMACROS
 627 /*
 628  * Block I/O parameterization.  A basic block (BB) is the lowest size of
 629  * filesystem allocation, and must equal 512.  Length units given to bio
 630  * routines are in BB's.
 631  */
 632 #define BBSHIFT         9
 633 #define BBSIZE          (1<<BBSHIFT)
 634 #define BBMASK          (BBSIZE-1)
 635 #define BTOBB(bytes)    (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
 636 #define BTOBBT(bytes)   ((__u64)(bytes) >> BBSHIFT)
 637 #define BBTOB(bbs)      ((bbs) << BBSHIFT)
 638 #endif
 639
 640 #endif  /* __XFS_FS_H__ */