libxfs/libxfs_priv.h

   1 /*
   2  * Copyright (c) 2000-2005 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 General Public License as
   7  * 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 General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU 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
  19 /*
  20  * This header is effectively a "namespace multiplexor" for the
  21  * user level XFS code.  It provides all of the necessary stuff
  22  * such that we can build some parts of the XFS kernel code in
  23  * user space in a controlled fashion, and translates the names
  24  * used in the kernel into the names which libxfs is going to
  25  * make available to user tools.
  26  *
  27  * It should only ever be #include'd by XFS "kernel" code being
  28  * compiled in user space.
  29  *
  30  * Our goals here are to...
  31  *      o  "share" large amounts of complex code between user and
  32  *         kernel space;
  33  *      o  shield the user tools from changes in the bleeding
  34  *         edge kernel code, merging source changes when
  35  *         convenient and not immediately (no symlinks);
  36  *      o  i.e. be able to merge changes to the kernel source back
  37  *         into the affected user tools in a controlled fashion;
  38  *      o  provide a _minimalist_ life-support system for kernel
  39  *         code in user land, not the "everything + the kitchen
  40  *         sink" model which libsim had mutated into;
  41  *      o  allow the kernel code to be completely free of code
  42  *         specifically there to support the user level build.
  43  */
  44
  45 /*
  46  * define a guard and something we can check to determine what include context
  47  * we are running from.
  48  */
  49 #ifndef __LIBXFS_INTERNAL_XFS_H__
  50 #define __LIBXFS_INTERNAL_XFS_H__
  51
  52 /*
  53  * Repair doesn't have a inode when it calls libxfs_dir2_data_freescan,
  54  * so we to work around this internally for now.
  55  */
  56 #define xfs_dir2_data_freescan(ip, hdr, loghead) \
  57         __xfs_dir2_data_freescan((ip)->i_mount->m_dir_geo, \
  58                                  (ip)->d_ops, hdr, loghead)
  59
  60 #include "libxfs_api_defs.h"
  61 #include "platform_defs.h"
  62 #include "xfs.h"
  63
  64 #include "list.h"
  65 #include "hlist.h"
  66 #include "cache.h"
  67 #include "bitops.h"
  68 #include "kmem.h"
  69 #include "radix-tree.h"
  70 #include "atomic.h"
  71
  72 #include "xfs_types.h"
  73 #include "xfs_arch.h"
  74
  75 #include "xfs_fs.h"
  76
  77 /* CRC stuff, buffer API dependent on it */
  78 extern uint32_t crc32_le(uint32_t crc, unsigned char const *p, size_t len);
  79 extern uint32_t crc32c_le(uint32_t crc, unsigned char const *p, size_t len);
  80
  81 #define crc32(c,p,l)    crc32_le((c),(unsigned char const *)(p),(l))
  82 #define crc32c(c,p,l)   crc32c_le((c),(unsigned char const *)(p),(l))
  83
  84 #include "xfs_cksum.h"
  85
  86 /*
  87  * This mirrors the kernel include for xfs_buf.h - it's implicitly included in
  88  * every files via a similar include in the kernel xfs_linux.h.
  89  */
  90 #include "libxfs_io.h"
  91
  92 /* for all the support code that uses progname in error messages */
  93 extern char    *progname;
  94
  95 #undef ASSERT
  96 #define ASSERT(ex) assert(ex)
  97
  98 #ifndef EWRONGFS
  99 #define EWRONGFS        EINVAL
 100 #endif
 101
 102 #define xfs_error_level                 0
 103
 104 #define STATIC                          static
 105
 106 /* XXX: need to push these out to make LIBXFS_ATTR defines */
 107 #define ATTR_ROOT                       0x0002
 108 #define ATTR_SECURE                     0x0008
 109 #define ATTR_CREATE                     0x0010
 110 #define ATTR_REPLACE                    0x0020
 111 #define ATTR_KERNOTIME                  0
 112 #define ATTR_KERNOVAL                   0
 113
 114 #define IHOLD(ip)                       ((void) 0)
 115
 116 #define XFS_IGET_CREATE                 0x1
 117 #define XFS_IGET_UNTRUSTED              0x2
 118
 119 extern void cmn_err(int, char *, ...);
 120 enum ce { CE_DEBUG, CE_CONT, CE_NOTE, CE_WARN, CE_ALERT, CE_PANIC };
 121
 122 #define xfs_notice(mp,fmt,args...)              cmn_err(CE_NOTE,fmt, ## args)
 123 #define xfs_warn(mp,fmt,args...)                cmn_err(CE_WARN,fmt, ## args)
 124 #define xfs_hex_dump(d,n)               ((void) 0)
 125
 126 #define xfs_force_shutdown(d,n)         ((void) 0)
 127
 128 /* stop unused var warnings by assigning mp to itself */
 129 #define XFS_CORRUPTION_ERROR(e,l,mp,m)  do { \
 130         (mp) = (mp); \
 131         cmn_err(CE_ALERT, "%s: XFS_CORRUPTION_ERROR", (e));  \
 132 } while (0)
 133
 134 #define XFS_ERROR_REPORT(e,l,mp)        do { \
 135         (mp) = (mp); \
 136         cmn_err(CE_ALERT, "%s: XFS_ERROR_REPORT", (e));  \
 137 } while (0)
 138
 139 #define XFS_QM_DQATTACH(mp,ip,flags)    0
 140 #define XFS_ERRLEVEL_LOW                1
 141 #define XFS_FORCED_SHUTDOWN(mp)         0
 142 #define XFS_ILOCK_EXCL                  0
 143 #define XFS_STATS_INC(mp, count)        do { } while (0)
 144 #define XFS_STATS_DEC(mp, count, x)     do { } while (0)
 145 #define XFS_STATS_ADD(mp, count, x)     do { } while (0)
 146 #define XFS_TRANS_MOD_DQUOT_BYINO(mp,tp,ip,field,delta) do { } while (0)
 147 #define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl)  0
 148 #define XFS_TRANS_UNRESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl)        0
 149 #define XFS_TEST_ERROR(expr,a,b,c)      ( expr )
 150 #define XFS_WANT_CORRUPTED_GOTO(mp, expr, l)                            \
 151 {                                                                       \
 152         if (!(expr)) {                                                  \
 153                 if ((mp)->m_flags & LIBXFS_MOUNT_WANT_CORRUPTED)        \
 154                         printf("WANT_CORRUPTED_GOTO at %s:%d\n",        \
 155                                 __func__, __LINE__);                    \
 156                 error = -EFSCORRUPTED;                                  \
 157                 goto l;                                                 \
 158         }                                                               \
 159 }
 160 #define XFS_WANT_CORRUPTED_RETURN(mp, expr)                             \
 161 {                                                                       \
 162         if (!(expr)) {                                                  \
 163                 if ((mp)->m_flags & LIBXFS_MOUNT_WANT_CORRUPTED)        \
 164                         printf("WANT_CORRUPTED_RETURN at %s:%d\n",      \
 165                                 __func__, __LINE__);                    \
 166                 return -EFSCORRUPTED;                                   \
 167         }                                                               \
 168 }
 169
 170 #ifdef __GNUC__
 171 #define __return_address        __builtin_return_address(0)
 172 #endif
 173
 174 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
 175
 176 /* miscellaneous kernel routines not in user space */
 177 #define down_read(a)            ((void) 0)
 178 #define up_read(a)              ((void) 0)
 179 #define spin_lock_init(a)       ((void) 0)
 180 #define spin_lock(a)            ((void) 0)
 181 #define spin_unlock(a)          ((void) 0)
 182 #define likely(x)               (x)
 183 #define unlikely(x)             (x)
 184 #define rcu_read_lock()         ((void) 0)
 185 #define rcu_read_unlock()       ((void) 0)
 186 #define WARN_ON_ONCE(expr)      ((void) 0)
 187
 188 #define percpu_counter_read(x)          (*x)
 189 #define percpu_counter_read_positive(x) ((*x) > 0 ? (*x) : 0)
 190 #define percpu_counter_sum(x)           (*x)
 191
 192 /*
 193  * prandom_u32 is used for di_gen inode allocation, it must be zero for libxfs
 194  * or all sorts of badness can occur!
 195  */
 196 #define prandom_u32()           0
 197
 198 #define PAGE_SIZE               getpagesize()
 199
 200 static inline int __do_div(unsigned long long *n, unsigned base)
 201 {
 202         int __res;
 203         __res = (int)(((unsigned long) *n) % (unsigned) base);
 204         *n = ((unsigned long) *n) / (unsigned) base;
 205         return __res;
 206 }
 207
 208 #define do_div(n,base)  (__do_div((unsigned long long *)&(n), (base)))
 209 #define do_mod(a, b)            ((a) % (b))
 210 #define rol32(x,y)              (((x) << (y)) | ((x) >> (32 - (y))))
 211
 212 #define min_t(type,x,y) \
 213         ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
 214 #define max_t(type,x,y) \
 215         ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
 216
 217
 218 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
 219 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
 220 #define round_down(x, y) ((x) & ~__round_mask(x, y))
 221 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 222
 223 /*
 224  * Handling for kernel bitmap types.
 225  */
 226 #define BITS_TO_LONGS(nr)       DIV_ROUND_UP(nr, NBBY * sizeof(long))
 227 #define DECLARE_BITMAP(name,bits) \
 228         unsigned long name[BITS_TO_LONGS(bits)]
 229 #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
 230
 231 /*
 232  * This is a common helper function for find_next_bit and
 233  * find_next_zero_bit.  The difference is the "invert" argument, which
 234  * is XORed with each fetched word before searching it for one bits.
 235  */
 236 static inline unsigned long
 237 _find_next_bit(const unsigned long *addr, unsigned long nbits,
 238                 unsigned long start, unsigned long invert)
 239 {
 240         unsigned long tmp;
 241
 242         if (!nbits || start >= nbits)
 243                 return nbits;
 244
 245         tmp = addr[start / BITS_PER_LONG] ^ invert;
 246
 247         /* Handle 1st word. */
 248         tmp &= BITMAP_FIRST_WORD_MASK(start);
 249         start = round_down(start, BITS_PER_LONG);
 250
 251         while (!tmp) {
 252                 start += BITS_PER_LONG;
 253                 if (start >= nbits)
 254                         return nbits;
 255
 256                 tmp = addr[start / BITS_PER_LONG] ^ invert;
 257         }
 258
 259         return min(start + ffs(tmp), nbits);
 260 }
 261
 262 /*
 263  * Find the next set bit in a memory region.
 264  */
 265 static inline unsigned long
 266 find_next_bit(const unsigned long *addr, unsigned long size,
 267                 unsigned long offset)
 268 {
 269         return _find_next_bit(addr, size, offset, 0UL);
 270 }
 271 static inline unsigned long
 272 find_next_zero_bit(const unsigned long *addr, unsigned long size,
 273                  unsigned long offset)
 274 {
 275         return _find_next_bit(addr, size, offset, ~0UL);
 276 }
 277 #define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
 278
 279 static inline __attribute__((const))
 280 int is_power_of_2(unsigned long n)
 281 {
 282         return (n != 0 && ((n & (n - 1)) == 0));
 283 }
 284
 285 /*
 286  * xfs_iroundup: round up argument to next power of two
 287  */
 288 static inline uint
 289 roundup_pow_of_two(uint v)
 290 {
 291         int     i;
 292         uint    m;
 293
 294         if ((v & (v - 1)) == 0)
 295                 return v;
 296         ASSERT((v & 0x80000000) == 0);
 297         if ((v & (v + 1)) == 0)
 298                 return v + 1;
 299         for (i = 0, m = 1; i < 31; i++, m <<= 1) {
 300                 if (v & m)
 301                         continue;
 302                 v |= m;
 303                 if ((v & (v + 1)) == 0)
 304                         return v + 1;
 305         }
 306         ASSERT(0);
 307         return 0;
 308 }
 309
 310 static inline __uint64_t
 311 roundup_64(__uint64_t x, __uint32_t y)
 312 {
 313         x += y - 1;
 314         do_div(x, y);
 315         return x * y;
 316 }
 317
 318 /* buffer management */
 319 #define XFS_BUF_LOCK                    0
 320 #define XFS_BUF_TRYLOCK                 0
 321 #define XBF_LOCK                        XFS_BUF_LOCK
 322 #define XBF_TRYLOCK                     XFS_BUF_TRYLOCK
 323 #define XBF_DONT_BLOCK                  0
 324 #define XBF_UNMAPPED                    0
 325 #define XBF_DONE                        0
 326 #define XFS_BUF_GETERROR(bp)            0
 327 #define XFS_BUF_DONE(bp)                ((bp)->b_flags |= LIBXFS_B_UPTODATE)
 328 #define XFS_BUF_ISDONE(bp)              ((bp)->b_flags & LIBXFS_B_UPTODATE)
 329 #define xfs_buf_stale(bp)               ((bp)->b_flags |= LIBXFS_B_STALE)
 330 #define XFS_BUF_UNDELAYWRITE(bp)        ((bp)->b_flags &= ~LIBXFS_B_DIRTY)
 331 #define XFS_BUF_SET_VTYPE(a,b)          ((void) 0)
 332 #define XFS_BUF_SET_VTYPE_REF(a,b,c)    ((void) 0)
 333 #define XFS_BUF_SET_BDSTRAT_FUNC(a,b)   ((void) 0)
 334
 335 /* avoid gcc warning */
 336 #define xfs_incore(bt,blkno,len,lockit) ({              \
 337         typeof(blkno) __foo = (blkno);                  \
 338         typeof(len) __bar = (len);                      \
 339         (blkno) = __foo;                                \
 340         (len) = __bar; /* no set-but-unused warning */  \
 341         NULL;                                           \
 342 })
 343 #define xfs_buf_relse(bp)               libxfs_putbuf(bp)
 344 #define xfs_buf_get(devp,blkno,len,f)   (libxfs_getbuf((devp), (blkno), (len)))
 345 #define xfs_bwrite(bp)                  libxfs_writebuf((bp), 0)
 346 #define xfs_buf_delwri_queue(bp, bl)    libxfs_writebuf((bp), 0)
 347
 348 #define XBRW_READ                       LIBXFS_BREAD
 349 #define XBRW_WRITE                      LIBXFS_BWRITE
 350 #define xfs_buf_iomove(bp,off,len,data,f)       libxfs_iomove(bp,off,len,data,f)
 351 #define xfs_buf_zero(bp,off,len)        libxfs_iomove(bp,off,len,0,LIBXFS_BZERO)
 352
 353 /* mount stuff */
 354 #define XFS_MOUNT_32BITINODES           LIBXFS_MOUNT_32BITINODES
 355 #define XFS_MOUNT_ATTR2                 LIBXFS_MOUNT_ATTR2
 356 #define XFS_MOUNT_SMALL_INUMS           0       /* ignored in userspace */
 357 #define XFS_MOUNT_WSYNC                 0       /* ignored in userspace */
 358 #define XFS_MOUNT_NOALIGN               0       /* ignored in userspace */
 359 #define XFS_MOUNT_IKEEP                 0       /* ignored in userspace */
 360 #define XFS_MOUNT_SWALLOC               0       /* ignored in userspace */
 361 #define XFS_MOUNT_RDONLY                0       /* ignored in userspace */
 362
 363
 364 #define xfs_trans_get_block_res(tp)     1
 365 #define xfs_trans_set_sync(tp)          ((void) 0)
 366 #define xfs_trans_ordered_buf(tp, bp)   ((void) 0)
 367 #define xfs_trans_agblocks_delta(tp, d)
 368 #define xfs_trans_agflist_delta(tp, d)
 369 #define xfs_trans_agbtree_delta(tp, d)
 370 #define xfs_trans_buf_set_type(tp, bp, t)       ({      \
 371         int __t = (t);                                  \
 372         __t = __t; /* no set-but-unused warning */      \
 373         tp = tp;  /* no set-but-unused warning */       \
 374 })
 375
 376 #define xfs_trans_buf_copy_type(dbp, sbp)
 377
 378 /* no readahead, need to avoid set-but-unused var warnings. */
 379 #define xfs_buf_readahead(a,d,c,ops)            ({      \
 380         xfs_daddr_t __d = d;                            \
 381         __d = __d; /* no set-but-unused warning */      \
 382 })
 383 #define xfs_buf_readahead_map(a,b,c,ops)        ((void) 0)      /* no readahead */
 384 #define xfs_buftrace(x,y)                       ((void) 0)      /* debug only */
 385
 386 #define xfs_cmn_err(tag,level,mp,fmt,args...)   cmn_err(level,fmt, ## args)
 387 #define xfs_warn(mp,fmt,args...)                cmn_err(CE_WARN,fmt, ## args)
 388 #define xfs_alert(mp,fmt,args...)               cmn_err(CE_ALERT,fmt, ## args)
 389 #define xfs_alert_tag(mp,tag,fmt,args...)       cmn_err(CE_ALERT,fmt, ## args)
 390
 391 #define xfs_dir2_trace_args(where, args)                ((void) 0)
 392 #define xfs_dir2_trace_args_b(where, args, bp)          ((void) 0)
 393 #define xfs_dir2_trace_args_bb(where, args, lbp, dbp)   ((void) 0)
 394 #define xfs_dir2_trace_args_bibii(where, args, bs, ss, bd, sd, c) ((void) 0)
 395 #define xfs_dir2_trace_args_db(where, args, db, bp)     ((void) 0)
 396 #define xfs_dir2_trace_args_i(where, args, i)           ((void) 0)
 397 #define xfs_dir2_trace_args_s(where, args, s)           ((void) 0)
 398 #define xfs_dir2_trace_args_sb(where, args, s, bp)      ((void) 0)
 399 #define xfs_sort                                        qsort
 400
 401 #define xfs_icsb_reinit_counters(mp)                    do { } while (0)
 402 #define xfs_initialize_perag_icache(pag)                ((void) 0)
 403
 404 #define xfs_ilock(ip,mode)                              ((void) 0)
 405 #define xfs_ilock_nowait(ip,mode)                       ((void) 0)
 406 #define xfs_ilock_demote(ip,mode)                       ((void) 0)
 407 #define xfs_ilock_data_map_shared(ip)                   (0)
 408 #define xfs_ilock_attr_map_shared(ip)                   (0)
 409 #define xfs_iunlock(ip,mode)                            ({      \
 410         typeof(mode) __mode = mode;                             \
 411         __mode = __mode; /* no set-but-unused warning */        \
 412 })
 413 #define __xfs_flock(ip)                                 ((void) 0)
 414
 415 /* space allocation */
 416 #define xfs_extent_busy_reuse(mp,ag,bno,len,user)       ((void) 0)
 417 /* avoid unused variable warning */
 418 #define xfs_extent_busy_insert(tp,ag,bno,len,flags)({   \
 419         xfs_agnumber_t __foo = ag;                      \
 420         __foo = __foo; /* no set-but-unused warning */  \
 421 })
 422 #define xfs_extent_busy_trim(args,fbno,flen,bno,len) \
 423 do { \
 424         *(bno) = (fbno); \
 425         *(len) = (flen); \
 426 } while (0)
 427
 428 /* avoid unused variable warning */
 429 #define xfs_alloc_busy_insert(tp,ag,b,len)      ({      \
 430         xfs_agnumber_t __foo = ag;                      \
 431         __foo = 0;                                      \
 432 })
 433
 434 #define xfs_rotorstep                           1
 435 #define xfs_bmap_rtalloc(a)                     (-ENOSYS)
 436 #define xfs_get_extsz_hint(ip)                  (0)
 437 #define xfs_get_cowextsz_hint(ip)               (0)
 438 #define xfs_inode_is_filestream(ip)             (0)
 439 #define xfs_filestream_lookup_ag(ip)            (0)
 440 #define xfs_filestream_new_ag(ip,ag)            (0)
 441
 442 #define xfs_log_force(mp,flags)                 ((void) 0)
 443 #define XFS_LOG_SYNC                            1
 444
 445 /* quota bits */
 446 #define xfs_trans_mod_dquot_byino(t,i,f,d)              ((void) 0)
 447 #define xfs_trans_reserve_quota_nblks(t,i,b,n,f)        (0)
 448 #define xfs_trans_unreserve_quota_nblks(t,i,b,n,f)      ((void) 0)
 449 #define xfs_qm_dqattach(i,f)                            (0)
 450
 451 #define uuid_copy(s,d)          platform_uuid_copy((s),(d))
 452 #define uuid_equal(s,d)         (platform_uuid_compare((s),(d)) == 0)
 453
 454 #define xfs_icreate_log(tp, agno, agbno, cnt, isize, len, gen) ((void) 0)
 455 #define xfs_sb_validate_fsb_count(sbp, nblks)           (0)
 456
 457 /*
 458  * Prototypes for kernel static functions that are aren't in their
 459  * associated header files.
 460  */
 461 struct xfs_da_args;
 462 struct xfs_bmap_free;
 463 struct xfs_bmap_free_item;
 464 struct xfs_mount;
 465 struct xfs_sb;
 466 struct xfs_trans;
 467 struct xfs_inode;
 468 struct xfs_log_item;
 469 struct xfs_buf;
 470 struct xfs_buf_map;
 471 struct xfs_buf_log_item;
 472 struct xfs_buftarg;
 473
 474 /* xfs_attr.c */
 475 int xfs_attr_rmtval_get(struct xfs_da_args *);
 476
 477 /* xfs_bmap.c */
 478 void xfs_bmap_del_free(struct xfs_bmap_free *, struct xfs_bmap_free_item *);
 479
 480 /* xfs_mount.c */
 481 int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t);
 482 void xfs_mount_common(struct xfs_mount *, struct xfs_sb *);
 483
 484 /*
 485  * logitem.c and trans.c prototypes
 486  */
 487 void xfs_trans_init(struct xfs_mount *);
 488 int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
 489
 490 /* xfs_trans_item.c */
 491 void xfs_trans_add_item(struct xfs_trans *, struct xfs_log_item *);
 492 void xfs_trans_del_item(struct xfs_log_item *);
 493
 494 /* xfs_inode_item.c */
 495 void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 496
 497 /* xfs_buf_item.c */
 498 void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
 499 void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
 500
 501 /* xfs_trans_buf.c */
 502 struct xfs_buf *xfs_trans_buf_item_match(struct xfs_trans *,
 503                         struct xfs_buftarg *, struct xfs_buf_map *, int);
 504
 505 /* local source files */
 506 #define xfs_mod_fdblocks(mp, delta, rsvd) \
 507         libxfs_mod_incore_sb(mp, XFS_TRANS_SB_FDBLOCKS, delta, rsvd)
 508 #define xfs_mod_frextents(mp, delta) \
 509         libxfs_mod_incore_sb(mp, XFS_TRANS_SB_FREXTENTS, delta, 0)
 510 int  libxfs_mod_incore_sb(struct xfs_mount *, int, int64_t, int);
 511 /* percpu counters in mp are #defined to the superblock sb_ counters */
 512 #define xfs_reinit_percpu_counters(mp)
 513
 514 void xfs_trans_mod_sb(struct xfs_trans *, uint, long);
 515 void xfs_trans_init(struct xfs_mount *);
 516 int  xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
 517 void xfs_verifier_error(struct xfs_buf *bp);
 518
 519 /* XXX: this is clearly a bug - a shared header needs to export this */
 520 /* xfs_rtalloc.c */
 521 int libxfs_rtfree_extent(struct xfs_trans *, xfs_rtblock_t, xfs_extlen_t);
 522
 523 int libxfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,
 524                         xfs_off_t count_fsb);
 525
 526 bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
 527
 528 #endif  /* __LIBXFS_INTERNAL_XFS_H__ */