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 #include "libxfs_api_defs.h"
  53 #include "platform_defs.h"
  54 #include "xfs.h"
  55
  56 #include "list.h"
  57 #include "hlist.h"
  58 #include "cache.h"
  59 #include "bitops.h"
  60 #include "kmem.h"
  61 #include "radix-tree.h"
  62 #include "atomic.h"
  63
  64 #include "xfs_types.h"
  65 #include "xfs_arch.h"
  66
  67 #include "xfs_fs.h"
  68
  69 /* CRC stuff, buffer API dependent on it */
  70 extern uint32_t crc32_le(uint32_t crc, unsigned char const *p, size_t len);
  71 extern uint32_t crc32c_le(uint32_t crc, unsigned char const *p, size_t len);
  72
  73 #define crc32(c,p,l)    crc32_le((c),(unsigned char const *)(p),(l))
  74 #define crc32c(c,p,l)   crc32c_le((c),(unsigned char const *)(p),(l))
  75
  76 #include "xfs_cksum.h"
  77
  78 /*
  79  * This mirrors the kernel include for xfs_buf.h - it's implicitly included in
  80  * every files via a similar include in the kernel xfs_linux.h.
  81  */
  82 #include "libxfs_io.h"
  83
  84 /* for all the support code that uses progname in error messages */
  85 extern char    *progname;
  86
  87 #undef ASSERT
  88 #define ASSERT(ex) assert(ex)
  89
  90 /*
  91  * We have no need for the "linux" dev_t in userspace, so these
  92  * are no-ops, and an xfs_dev_t is stored in VFS_I(ip)->i_rdev
  93  */
  94 #define xfs_to_linux_dev_t(dev) dev
  95 #define linux_to_xfs_dev_t(dev) dev
  96
  97 #ifndef EWRONGFS
  98 #define EWRONGFS        EINVAL
  99 #endif
 100
 101 #define xfs_error_level                 0
 102
 103 #define STATIC                          static
 104
 105 /*
 106  * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
 107  * prints a hashed version of the pointer to avoid leaking kernel
 108  * pointers into dmesg.  If we're trying to debug the kernel we want the
 109  * raw values, so override this behavior as best we can.
 110  *
 111  * In userspace we don't have this problem.
 112  */
 113 #define PTR_FMT "%p"
 114
 115 /* XXX: need to push these out to make LIBXFS_ATTR defines */
 116 #define ATTR_ROOT                       0x0002
 117 #define ATTR_SECURE                     0x0008
 118 #define ATTR_CREATE                     0x0010
 119 #define ATTR_REPLACE                    0x0020
 120 #define ATTR_KERNOTIME                  0
 121 #define ATTR_KERNOVAL                   0
 122
 123 #define XFS_IGET_CREATE                 0x1
 124 #define XFS_IGET_UNTRUSTED              0x2
 125
 126 extern void cmn_err(int, char *, ...);
 127 enum ce { CE_DEBUG, CE_CONT, CE_NOTE, CE_WARN, CE_ALERT, CE_PANIC };
 128
 129 #define xfs_notice(mp,fmt,args...)              cmn_err(CE_NOTE,fmt, ## args)
 130 #define xfs_warn(mp,fmt,args...)                cmn_err(CE_WARN,fmt, ## args)
 131 #define xfs_hex_dump(d,n)               ((void) 0)
 132
 133 #define xfs_force_shutdown(d,n)         ((void) 0)
 134
 135 /* stop unused var warnings by assigning mp to itself */
 136 #define XFS_CORRUPTION_ERROR(e,l,mp,m)  do { \
 137         (mp) = (mp); \
 138         cmn_err(CE_ALERT, "%s: XFS_CORRUPTION_ERROR", (e));  \
 139 } while (0)
 140
 141 #define XFS_ERROR_REPORT(e,l,mp)        do { \
 142         (mp) = (mp); \
 143         cmn_err(CE_ALERT, "%s: XFS_ERROR_REPORT", (e));  \
 144 } while (0)
 145
 146 #define XFS_ERRLEVEL_LOW                1
 147 #define XFS_FORCED_SHUTDOWN(mp)         0
 148 #define XFS_ILOCK_EXCL                  0
 149 #define XFS_STATS_INC(mp, count)        do { (mp) = (mp); } while (0)
 150 #define XFS_STATS_DEC(mp, count, x)     do { (mp) = (mp); } while (0)
 151 #define XFS_STATS_ADD(mp, count, x)     do { (mp) = (mp); } while (0)
 152 #define XFS_TEST_ERROR(expr,a,b)        ( expr )
 153 #define XFS_WANT_CORRUPTED_GOTO(mp, expr, l)                            \
 154 {                                                                       \
 155         if (!(expr)) {                                                  \
 156                 if ((mp)->m_flags & LIBXFS_MOUNT_WANT_CORRUPTED)        \
 157                         printf("WANT_CORRUPTED_GOTO at %s:%d\n",        \
 158                                 __func__, __LINE__);                    \
 159                 error = -EFSCORRUPTED;                                  \
 160                 goto l;                                                 \
 161         }                                                               \
 162 }
 163 #define XFS_WANT_CORRUPTED_RETURN(mp, expr)                             \
 164 {                                                                       \
 165         if (!(expr)) {                                                  \
 166                 if ((mp)->m_flags & LIBXFS_MOUNT_WANT_CORRUPTED)        \
 167                         printf("WANT_CORRUPTED_RETURN at %s:%d\n",      \
 168                                 __func__, __LINE__);                    \
 169                 return -EFSCORRUPTED;                                   \
 170         }                                                               \
 171 }
 172
 173 #ifdef __GNUC__
 174 #define __return_address        __builtin_return_address(0)
 175
 176 /*
 177  * Return the address of a label.  Use barrier() so that the optimizer
 178  * won't reorder code to refactor the error jumpouts into a single
 179  * return, which throws off the reported address.
 180  */
 181 #define __this_address  ({ __label__ __here; __here: barrier(); &&__here; })
 182 /* Optimization barrier */
 183
 184 /* The "volatile" is due to gcc bugs */
 185 #define barrier() __asm__ __volatile__("": : :"memory")
 186 #endif
 187
 188 /* Optimization barrier */
 189 #ifndef barrier
 190 # define barrier() __memory_barrier()
 191 #endif
 192
 193 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
 194
 195 /* miscellaneous kernel routines not in user space */
 196 #define down_read(a)            ((void) 0)
 197 #define up_read(a)              ((void) 0)
 198 #define spin_lock_init(a)       ((void) 0)
 199 #define spin_lock(a)            ((void) 0)
 200 #define spin_unlock(a)          ((void) 0)
 201 #define likely(x)               (x)
 202 #define unlikely(x)             (x)
 203 #define rcu_read_lock()         ((void) 0)
 204 #define rcu_read_unlock()       ((void) 0)
 205 /* Need to be able to handle this bare or in control flow */
 206 static inline bool WARN_ON_ONCE(bool expr) {
 207         return (expr);
 208 }
 209
 210 #define percpu_counter_read(x)          (*x)
 211 #define percpu_counter_read_positive(x) ((*x) > 0 ? (*x) : 0)
 212 #define percpu_counter_sum(x)           (*x)
 213
 214 /*
 215  * prandom_u32 is used for di_gen inode allocation, it must be zero for libxfs
 216  * or all sorts of badness can occur!
 217  */
 218 #define prandom_u32()           0
 219
 220 #define PAGE_SIZE               getpagesize()
 221
 222 #define inode_peek_iversion(inode)      (inode)->i_version
 223 #define inode_set_iversion_queried(inode, version) do { \
 224         (inode)->i_version = (version); \
 225 } while (0)
 226
 227 static inline int __do_div(unsigned long long *n, unsigned base)
 228 {
 229         int __res;
 230         __res = (int)(((unsigned long) *n) % (unsigned) base);
 231         *n = ((unsigned long) *n) / (unsigned) base;
 232         return __res;
 233 }
 234
 235 #define do_div(n,base)  (__do_div((unsigned long long *)&(n), (base)))
 236 #define do_mod(a, b)            ((a) % (b))
 237 #define rol32(x,y)              (((x) << (y)) | ((x) >> (32 - (y))))
 238
 239 /**
 240  * div_u64_rem - unsigned 64bit divide with 32bit divisor with remainder
 241  * @dividend: unsigned 64bit dividend
 242  * @divisor: unsigned 32bit divisor
 243  * @remainder: pointer to unsigned 32bit remainder
 244  *
 245  * Return: sets ``*remainder``, then returns dividend / divisor
 246  *
 247  * This is commonly provided by 32bit archs to provide an optimized 64bit
 248  * divide.
 249  */
 250 static inline uint64_t
 251 div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder)
 252 {
 253         *remainder = dividend % divisor;
 254         return dividend / divisor;
 255 }
 256
 257 #define min_t(type,x,y) \
 258         ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
 259 #define max_t(type,x,y) \
 260         ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
 261
 262
 263 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
 264 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
 265 #define round_down(x, y) ((x) & ~__round_mask(x, y))
 266 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
 267
 268 /*
 269  * Handling for kernel bitmap types.
 270  */
 271 #define BITS_TO_LONGS(nr)       DIV_ROUND_UP(nr, NBBY * sizeof(long))
 272 #define DECLARE_BITMAP(name,bits) \
 273         unsigned long name[BITS_TO_LONGS(bits)]
 274 #define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
 275
 276 /*
 277  * This is a common helper function for find_next_bit and
 278  * find_next_zero_bit.  The difference is the "invert" argument, which
 279  * is XORed with each fetched word before searching it for one bits.
 280  */
 281 static inline unsigned long
 282 _find_next_bit(const unsigned long *addr, unsigned long nbits,
 283                 unsigned long start, unsigned long invert)
 284 {
 285         unsigned long tmp;
 286
 287         if (!nbits || start >= nbits)
 288                 return nbits;
 289
 290         tmp = addr[start / BITS_PER_LONG] ^ invert;
 291
 292         /* Handle 1st word. */
 293         tmp &= BITMAP_FIRST_WORD_MASK(start);
 294         start = round_down(start, BITS_PER_LONG);
 295
 296         while (!tmp) {
 297                 start += BITS_PER_LONG;
 298                 if (start >= nbits)
 299                         return nbits;
 300
 301                 tmp = addr[start / BITS_PER_LONG] ^ invert;
 302         }
 303
 304         return min(start + ffs(tmp), nbits);
 305 }
 306
 307 /*
 308  * Find the next set bit in a memory region.
 309  */
 310 static inline unsigned long
 311 find_next_bit(const unsigned long *addr, unsigned long size,
 312                 unsigned long offset)
 313 {
 314         return _find_next_bit(addr, size, offset, 0UL);
 315 }
 316 static inline unsigned long
 317 find_next_zero_bit(const unsigned long *addr, unsigned long size,
 318                  unsigned long offset)
 319 {
 320         return _find_next_bit(addr, size, offset, ~0UL);
 321 }
 322 #define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
 323
 324 static inline __attribute__((const))
 325 int is_power_of_2(unsigned long n)
 326 {
 327         return (n != 0 && ((n & (n - 1)) == 0));
 328 }
 329
 330 /*
 331  * xfs_iroundup: round up argument to next power of two
 332  */
 333 static inline uint
 334 roundup_pow_of_two(uint v)
 335 {
 336         int     i;
 337         uint    m;
 338
 339         if ((v & (v - 1)) == 0)
 340                 return v;
 341         ASSERT((v & 0x80000000) == 0);
 342         if ((v & (v + 1)) == 0)
 343                 return v + 1;
 344         for (i = 0, m = 1; i < 31; i++, m <<= 1) {
 345                 if (v & m)
 346                         continue;
 347                 v |= m;
 348                 if ((v & (v + 1)) == 0)
 349                         return v + 1;
 350         }
 351         ASSERT(0);
 352         return 0;
 353 }
 354
 355 static inline uint64_t
 356 roundup_64(uint64_t x, uint32_t y)
 357 {
 358         x += y - 1;
 359         do_div(x, y);
 360         return x * y;
 361 }
 362
 363 /* buffer management */
 364 #define XBF_TRYLOCK                     0
 365 #define XBF_UNMAPPED                    0
 366 #define XBF_DONE                        0
 367 #define xfs_buf_stale(bp)               ((bp)->b_flags |= LIBXFS_B_STALE)
 368 #define XFS_BUF_UNDELAYWRITE(bp)        ((bp)->b_flags &= ~LIBXFS_B_DIRTY)
 369 #define XFS_BUF_SET_BDSTRAT_FUNC(a,b)   ((void) 0)
 370
 371 /* avoid gcc warning */
 372 #define xfs_incore(bt,blkno,len,lockit) ({              \
 373         typeof(blkno) __foo = (blkno);                  \
 374         typeof(len) __bar = (len);                      \
 375         (blkno) = __foo;                                \
 376         (len) = __bar; /* no set-but-unused warning */  \
 377         NULL;                                           \
 378 })
 379 #define xfs_buf_relse(bp)               libxfs_putbuf(bp)
 380 #define xfs_buf_get(devp,blkno,len,f)   (libxfs_getbuf((devp), (blkno), (len)))
 381 #define xfs_bwrite(bp)                  libxfs_writebuf((bp), 0)
 382 #define xfs_buf_delwri_queue(bp, bl)    libxfs_writebuf((bp), 0)
 383
 384 #define XBRW_READ                       LIBXFS_BREAD
 385 #define XBRW_WRITE                      LIBXFS_BWRITE
 386 #define xfs_buf_iomove(bp,off,len,data,f)       libxfs_iomove(bp,off,len,data,f)
 387 #define xfs_buf_zero(bp,off,len)        libxfs_iomove(bp,off,len,0,LIBXFS_BZERO)
 388
 389 /* mount stuff */
 390 #define XFS_MOUNT_32BITINODES           LIBXFS_MOUNT_32BITINODES
 391 #define XFS_MOUNT_ATTR2                 LIBXFS_MOUNT_ATTR2
 392 #define XFS_MOUNT_SMALL_INUMS           0       /* ignored in userspace */
 393 #define XFS_MOUNT_WSYNC                 0       /* ignored in userspace */
 394 #define XFS_MOUNT_NOALIGN               0       /* ignored in userspace */
 395 #define XFS_MOUNT_IKEEP                 0       /* ignored in userspace */
 396 #define XFS_MOUNT_SWALLOC               0       /* ignored in userspace */
 397 #define XFS_MOUNT_RDONLY                0       /* ignored in userspace */
 398
 399
 400 #define xfs_trans_set_sync(tp)          ((void) 0)
 401 #define xfs_trans_agblocks_delta(tp, d)
 402 #define xfs_trans_agflist_delta(tp, d)
 403 #define xfs_trans_agbtree_delta(tp, d)
 404 #define xfs_trans_buf_set_type(tp, bp, t)       ({      \
 405         int __t = (t);                                  \
 406         __t = __t; /* no set-but-unused warning */      \
 407         tp = tp;  /* no set-but-unused warning */       \
 408 })
 409
 410 #define xfs_trans_buf_copy_type(dbp, sbp)
 411
 412 /* no readahead, need to avoid set-but-unused var warnings. */
 413 #define xfs_buf_readahead(a,d,c,ops)            ({      \
 414         xfs_daddr_t __d = d;                            \
 415         __d = __d; /* no set-but-unused warning */      \
 416 })
 417 #define xfs_buf_readahead_map(a,b,c,ops)        ((void) 0)      /* no readahead */
 418
 419 #define xfs_warn(mp,fmt,args...)                cmn_err(CE_WARN,fmt, ## args)
 420 #define xfs_alert(mp,fmt,args...)               cmn_err(CE_ALERT,fmt, ## args)
 421 #define xfs_alert_tag(mp,tag,fmt,args...)       cmn_err(CE_ALERT,fmt, ## args)
 422
 423 #define xfs_sort                                        qsort
 424
 425 #define xfs_ilock(ip,mode)                              ((void) 0)
 426 #define xfs_ilock_nowait(ip,mode)                       ((void) 0)
 427 #define xfs_ilock_demote(ip,mode)                       ((void) 0)
 428 #define xfs_ilock_data_map_shared(ip)                   (0)
 429 #define xfs_ilock_attr_map_shared(ip)                   (0)
 430 #define xfs_iunlock(ip,mode)                            ({      \
 431         typeof(mode) __mode = mode;                             \
 432         __mode = __mode; /* no set-but-unused warning */        \
 433 })
 434
 435 /* space allocation */
 436 #define xfs_extent_busy_reuse(mp,ag,bno,len,user)       ((void) 0)
 437 /* avoid unused variable warning */
 438 #define xfs_extent_busy_insert(tp,ag,bno,len,flags)({   \
 439         xfs_agnumber_t __foo = ag;                      \
 440         __foo = __foo; /* no set-but-unused warning */  \
 441 })
 442 #define xfs_extent_busy_trim(args,bno,len,busy_gen)     ({      \
 443         unsigned __foo = *(busy_gen);                           \
 444         *(busy_gen) = __foo;                                    \
 445         false;                                                  \
 446 })
 447 #define xfs_extent_busy_flush(mp,pag,busy_gen)          ((void)(0))
 448
 449 #define xfs_rotorstep                           1
 450 #define xfs_bmap_rtalloc(a)                     (-ENOSYS)
 451 #define xfs_get_extsz_hint(ip)                  (0)
 452 #define xfs_get_cowextsz_hint(ip)               (0)
 453 #define xfs_inode_is_filestream(ip)             (0)
 454 #define xfs_filestream_lookup_ag(ip)            (0)
 455 #define xfs_filestream_new_ag(ip,ag)            (0)
 456
 457 #define xfs_log_force(mp,flags)                 ((void) 0)
 458 #define XFS_LOG_SYNC                            1
 459
 460 /* quota bits */
 461 #define xfs_trans_mod_dquot_byino(t,i,f,d)              ((void) 0)
 462 #define xfs_trans_reserve_quota_nblks(t,i,b,n,f)        (0)
 463 #define xfs_trans_unreserve_quota_nblks(t,i,b,n,f)      ((void) 0)
 464 #define xfs_qm_dqattach(i,f)                            (0)
 465
 466 #define uuid_copy(s,d)          platform_uuid_copy((s),(d))
 467 #define uuid_equal(s,d)         (platform_uuid_compare((s),(d)) == 0)
 468
 469 #define xfs_icreate_log(tp, agno, agbno, cnt, isize, len, gen) ((void) 0)
 470 #define xfs_sb_validate_fsb_count(sbp, nblks)           (0)
 471
 472 /*
 473  * Prototypes for kernel static functions that are aren't in their
 474  * associated header files.
 475  */
 476 struct xfs_da_args;
 477 struct xfs_bmap_free;
 478 struct xfs_bmap_free_item;
 479 struct xfs_mount;
 480 struct xfs_sb;
 481 struct xfs_trans;
 482 struct xfs_inode;
 483 struct xfs_log_item;
 484 struct xfs_buf;
 485 struct xfs_buf_map;
 486 struct xfs_buf_log_item;
 487 struct xfs_buftarg;
 488
 489 /* xfs_attr.c */
 490 int xfs_attr_rmtval_get(struct xfs_da_args *);
 491
 492 /* xfs_bmap.c */
 493 void xfs_bmap_del_free(struct xfs_bmap_free *, struct xfs_bmap_free_item *);
 494
 495 /* xfs_mount.c */
 496 int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t);
 497 void xfs_mount_common(struct xfs_mount *, struct xfs_sb *);
 498
 499 /*
 500  * logitem.c and trans.c prototypes
 501  */
 502 void xfs_trans_init(struct xfs_mount *);
 503 int xfs_trans_roll(struct xfs_trans **);
 504
 505 /* xfs_trans_item.c */
 506 void xfs_trans_add_item(struct xfs_trans *, struct xfs_log_item *);
 507 void xfs_trans_del_item(struct xfs_log_item *);
 508
 509 /* xfs_inode_item.c */
 510 void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 511
 512 /* xfs_buf_item.c */
 513 void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
 514 void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
 515
 516 /* xfs_trans_buf.c */
 517 struct xfs_buf *xfs_trans_buf_item_match(struct xfs_trans *,
 518                         struct xfs_buftarg *, struct xfs_buf_map *, int);
 519
 520 /* local source files */
 521 #define xfs_mod_fdblocks(mp, delta, rsvd) \
 522         libxfs_mod_incore_sb(mp, XFS_TRANS_SB_FDBLOCKS, delta, rsvd)
 523 #define xfs_mod_frextents(mp, delta) \
 524         libxfs_mod_incore_sb(mp, XFS_TRANS_SB_FREXTENTS, delta, 0)
 525 int  libxfs_mod_incore_sb(struct xfs_mount *, int, int64_t, int);
 526 /* percpu counters in mp are #defined to the superblock sb_ counters */
 527 #define xfs_reinit_percpu_counters(mp)
 528
 529 void xfs_trans_mod_sb(struct xfs_trans *, uint, long);
 530 void xfs_verifier_error(struct xfs_buf *bp, int error,
 531                         xfs_failaddr_t failaddr);
 532 void xfs_inode_verifier_error(struct xfs_inode *ip, int error,
 533                         const char *name, void *buf, size_t bufsz,
 534                         xfs_failaddr_t failaddr);
 535
 536 /* XXX: this is clearly a bug - a shared header needs to export this */
 537 /* xfs_rtalloc.c */
 538 int libxfs_rtfree_extent(struct xfs_trans *, xfs_rtblock_t, xfs_extlen_t);
 539
 540 struct xfs_rtalloc_rec {
 541         xfs_rtblock_t           ar_startblock;
 542         xfs_rtblock_t           ar_blockcount;
 543 };
 544
 545 typedef int (*xfs_rtalloc_query_range_fn)(
 546         struct xfs_trans        *tp,
 547         struct xfs_rtalloc_rec  *rec,
 548         void                    *priv);
 549
 550 int libxfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,
 551                         xfs_off_t count_fsb);
 552
 553 bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
 554
 555 /* xfs_icache.c */
 556 #define xfs_inode_set_cowblocks_tag(ip) do { } while (0)
 557 #define xfs_inode_set_eofblocks_tag(ip) do { } while (0)
 558
 559 /* xfs_stats.h */
 560 #define XFS_STATS_CALC_INDEX(member)    0
 561 #define XFS_STATS_INC_OFF(mp, off)
 562 #define XFS_STATS_ADD_OFF(mp, off, val)
 563
 564 typedef unsigned char u8;
 565 unsigned int hweight8(unsigned int w);
 566
 567 #endif  /* __LIBXFS_INTERNAL_XFS_H__ */