libxfs/xfs.h

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32
  33 /*
  34  * This header is effectively a "namespace multiplexor" for the
  35  * user level XFS code.  It provides all of the necessary stuff
  36  * such that we can build some parts of the XFS kernel code in
  37  * user space in a controlled fashion, and translates the names
  38  * used in the kernel into the names which libxfs is going to
  39  * make available to user tools.
  40  *
  41  * It should only ever be #include'd by XFS "kernel" code being
  42  * compiled in user space.
  43  *
  44  * Our goals here are to...
  45  *      o  "share" large amounts of complex code between user and
  46  *         kernel space;
  47  *      o  shield the user tools from changes in the bleeding
  48  *         edge kernel code, merging source changes when
  49  *         convenient and not immediately (no symlinks);
  50  *      o  i.e. be able to merge changes to the kernel source back
  51  *         into the affected user tools in a controlled fashion;
  52  *      o  provide a _minimalist_ life-support system for kernel
  53  *         code in user land, not the "everything + the kitchen
  54  *         sink" model which libsim had mutated into;
  55  *      o  allow the kernel code to be completely free of code
  56  *         specifically there to support the user level build.
  57  */
  58
  59 #include <libxfs.h>
  60 #include <string.h>
  61 #include <errno.h>
  62 #include <sys/stat.h>
  63
  64 /*
  65  * Map XFS kernel routine names to libxfs.h names
  66  */
  67
  68 #define xfs_xlatesb                     libxfs_xlate_sb
  69 #define xfs_xlate_dinode_core           libxfs_xlate_dinode_core
  70 #if ARCH_CONVERT != ARCH_NOCONVERT
  71 #define xfs_bmbt_get_all                libxfs_bmbt_get_all
  72 #define xfs_bmbt_disk_get_all           libxfs_bmbt_disk_get_all
  73 #else
  74 #define xfs_bmbt_get_all                libxfs_bmbt_get_all
  75 #define xfs_bmbt_disk_get_all           libxfs_bmbt_get_all
  76 #endif
  77 #define xfs_da_hashname                 libxfs_da_hashname
  78 #define xfs_da_log2_roundup             libxfs_da_log2_roundup
  79 #define xfs_highbit32                   libxfs_highbit32
  80 #define xfs_highbit64                   libxfs_highbit64
  81 #define xfs_attr_leaf_newentsize        libxfs_attr_leaf_newentsize
  82 #define xfs_alloc_compute_maxlevels     libxfs_alloc_compute_maxlevels
  83 #define xfs_bmap_compute_maxlevels      libxfs_bmap_compute_maxlevels
  84 #define xfs_ialloc_compute_maxlevels    libxfs_ialloc_compute_maxlevels
  85
  86 #define xfs_dir_init                    libxfs_dir_init
  87 #define xfs_dir2_init                   libxfs_dir2_init
  88 #define xfs_dir_mount                   libxfs_dir_mount
  89 #define xfs_dir2_mount                  libxfs_dir2_mount
  90 #define xfs_dir_createname              libxfs_dir_createname
  91 #define xfs_dir2_createname             libxfs_dir2_createname
  92 #define xfs_dir_lookup                  libxfs_dir_lookup
  93 #define xfs_dir2_lookup                 libxfs_dir2_lookup
  94 #define xfs_dir_replace                 libxfs_dir_replace
  95 #define xfs_dir2_replace                libxfs_dir2_replace
  96 #define xfs_dir_removename              libxfs_dir_removename
  97 #define xfs_dir2_removename             libxfs_dir2_removename
  98 #define xfs_dir_bogus_removename        libxfs_dir_bogus_removename
  99 #define xfs_dir2_bogus_removename       libxfs_dir2_bogus_removename
 100
 101 #define xfs_mount_common                libxfs_mount_common
 102 #define xfs_initialize_perag            libxfs_initialize_perag
 103 #define xfs_rtmount_init                libxfs_rtmount_init
 104 #define xfs_alloc_fix_freelist          libxfs_alloc_fix_freelist
 105 #define xfs_iread                       libxfs_iread
 106 #define xfs_ialloc                      libxfs_ialloc
 107 #define xfs_idata_realloc               libxfs_idata_realloc
 108 #define xfs_itobp                       libxfs_itobp
 109 #define xfs_ichgtime                    libxfs_ichgtime
 110 #define xfs_bmapi                       libxfs_bmapi
 111 #define xfs_bmap_finish                 libxfs_bmap_finish
 112 #define xfs_bmap_del_free               libxfs_bmap_del_free
 113 #define xfs_bunmapi                     libxfs_bunmapi
 114 #define xfs_free_extent                 libxfs_free_extent
 115 #define xfs_rtfree_extent               libxfs_rtfree_extent
 116 #define xfs_mod_sb                      libxfs_mod_sb
 117 #define xfs_mod_incore_sb               libxfs_mod_incore_sb
 118
 119 #define xfs_trans_init                  libxfs_trans_init
 120 #define xfs_trans_dup                   libxfs_trans_dup
 121 #define xfs_trans_iget                  libxfs_trans_iget
 122 #define xfs_trans_ijoin                 libxfs_trans_ijoin
 123 #define xfs_trans_ihold                 libxfs_trans_ihold
 124 #define xfs_trans_bjoin                 libxfs_trans_bjoin
 125 #define xfs_trans_bhold                 libxfs_trans_bhold
 126 #define xfs_trans_alloc                 libxfs_trans_alloc
 127 #define xfs_trans_commit                libxfs_trans_commit
 128 #define xfs_trans_mod_sb                libxfs_trans_mod_sb
 129 #define xfs_trans_reserve               libxfs_trans_reserve
 130 #define xfs_trans_get_buf               libxfs_trans_get_buf
 131 #define xfs_trans_log_buf               libxfs_trans_log_buf
 132 #define xfs_trans_read_buf              libxfs_trans_read_buf
 133 #define xfs_trans_log_inode             libxfs_trans_log_inode
 134 #define xfs_trans_inode_alloc_buf       libxfs_trans_inode_alloc_buf
 135 #define xfs_trans_brelse                libxfs_trans_brelse
 136 #define xfs_trans_binval                libxfs_trans_binval
 137
 138 #define xfs_da_shrink_inode             libxfs_da_shrink_inode
 139 #define xfs_da_grow_inode               libxfs_da_grow_inode
 140 #define xfs_da_brelse                   libxfs_da_brelse
 141 #define xfs_da_read_buf                 libxfs_da_read_buf
 142 #define xfs_da_get_buf                  libxfs_da_get_buf
 143 #define xfs_da_log_buf                  libxfs_da_log_buf
 144 #define xfs_da_do_buf                   libxfs_da_do_buf
 145 #define xfs_dir2_shrink_inode           libxfs_dir2_shrink_inode
 146 #define xfs_dir2_grow_inode             libxfs_dir2_grow_inode
 147 #define xfs_dir2_isleaf                 libxfs_dir2_isleaf
 148 #define xfs_dir2_isblock                libxfs_dir2_isblock
 149 #define xfs_dir2_data_use_free          libxfs_dir2_data_use_free
 150 #define xfs_dir2_data_make_free         libxfs_dir2_data_make_free
 151 #define xfs_dir2_data_log_entry         libxfs_dir2_data_log_entry
 152 #define xfs_dir2_data_log_header        libxfs_dir2_data_log_header
 153 #define xfs_dir2_data_freescan          libxfs_dir2_data_freescan
 154 #define xfs_dir2_free_log_bests         libxfs_dir2_free_log_bests
 155
 156
 157 /*
 158  * Infrastructure to support building kernel XFS code in user space
 159  */
 160
 161 /* buffer management */
 162 #define XFS_BUF_LOCK                    0
 163 #define XFS_BUF_MAPPED                  0
 164 #define XFS_BUF_TRYLOCK                 0
 165 #define XFS_BUF_ISDONE(bp)              0
 166 #define XFS_BUF_GETERROR(bp)            0
 167 #define XFS_BUF_DONE(bp)                ((void) 0)
 168 #define XFS_BUF_SET_REF(a,b)            ((void) 0)
 169 #define XFS_BUF_SET_VTYPE(a,b)          ((void) 0)
 170 #define XFS_BUF_SET_VTYPE_REF(a,b,c)    ((void) 0)
 171 #define XFS_BUF_SET_BDSTRAT_FUNC(a,b)   ((void) 0)
 172 #define xfs_baread(a,b,c)               ((void) 0)      /* no readahead */
 173 #define xfs_buftrace(x,y)               ((void) 0)      /* debug only */
 174 #define xfs_buf_item_log_debug(bip,a,b) ((void) 0)      /* debug only */
 175 #define xfs_validate_extents(e,n,d,f)   ((void) 0)      /* debug only */
 176 #define xfs_buf_relse(bp)               libxfs_putbuf(bp)
 177 #define xfs_read_buf(mp,devp,blkno,len,f,bpp)   \
 178         ( *(bpp) = libxfs_readbuf( *(dev_t*)devp, (blkno), (len), 1), 0 )
 179
 180 /* transaction management */
 181 #define xfs_trans_set_sync(tp)                  ((void) 0)
 182 #define xfs_trans_agblocks_delta(tp, d)         ((void) 0)      /* debug only */
 183 #define xfs_trans_agflist_delta(tp, d)          ((void) 0)      /* debug only */
 184 #define xfs_trans_agbtree_delta(tp, d)          ((void) 0)      /* debug only */
 185 #define xfs_trans_mod_dquot_byino(tp,ip,f,d)    ((void) 0)
 186 #define xfs_trans_get_block_res(tp)             1
 187 #define xfs_trans_reserve_blkquota(tp,i,n)      0
 188 #define xfs_trans_unreserve_blkquota(tp,i,n)    ((void) 0)
 189 #define xfs_trans_unreserve_rtblkquota(tp,i,n)  ((void) 0)
 190
 191 /* memory management */
 192 #define KM_SLEEP        1
 193 #define KM_SLEEP_IO     2
 194 #define kmem_zone               xfs_zone
 195 #define kmem_zone_t             xfs_zone_t
 196 #define kmem_zone_init(a, b)    libxfs_zone_init(a, b)
 197 #define kmem_zone_alloc(z, f)   libxfs_zone_zalloc(z)
 198 #define kmem_zone_zalloc(z, f)  libxfs_zone_zalloc(z)
 199 #define kmem_zone_free(z, p)    libxfs_zone_free(z, p)
 200 #define kmem_realloc(p,sz,u,f)  libxfs_realloc(p,sz)
 201 #define kmem_zalloc(size, f)    libxfs_malloc(size)
 202 #define kmem_alloc(size, f)     libxfs_malloc(size)
 203 #define kmem_free(p, size)      libxfs_free(p)
 204
 205 /* directory management */
 206 #define xfs_dir2_trace_args(where, args)                ((void) 0)
 207 #define xfs_dir2_trace_args_b(where, args, bp)          ((void) 0)
 208 #define xfs_dir2_trace_args_bb(where, args, lbp, dbp)   ((void) 0)
 209 #define xfs_dir2_trace_args_bibii(where, args, bs, ss, bd, sd, c) ((void) 0)
 210 #define xfs_dir2_trace_args_db(where, args, db, bp)     ((void) 0)
 211 #define xfs_dir2_trace_args_i(where, args, i)           ((void) 0)
 212 #define xfs_dir2_trace_args_s(where, args, s)           ((void) 0)
 213 #define xfs_dir2_trace_args_sb(where, args, s, bp)      ((void) 0)
 214 #define xfs_dir_shortform_validate_ondisk(a,b)          ((void) 0)
 215
 216 /* block management */
 217 #define xfs_bmap_check_extents(ip,w)                    ((void) 0)
 218 #define xfs_bmap_trace_delete(f,d,ip,i,c,w)             ((void) 0)
 219 #define xfs_bmap_trace_exlist(f,ip,i,w)                 ((void) 0)
 220 #define xfs_bmap_trace_insert(f,d,ip,i,c,r1,r2,w)       ((void) 0)
 221 #define xfs_bmap_trace_post_update(f,d,ip,i,w)          ((void) 0)
 222 #define xfs_bmap_trace_pre_update(f,d,ip,i,w)           ((void) 0)
 223 #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)    ((void) 0)
 224 #define xfs_bunmap_trace(ip, bno, len, flags, ra)       ((void) 0)
 225 #define XFS_BMBT_TRACE_ARGBI(c,b,i)                     ((void) 0)
 226 #define XFS_BMBT_TRACE_ARGBII(c,b,i,j)                  ((void) 0)
 227 #define XFS_BMBT_TRACE_ARGFFFI(c,o,b,i,j)               ((void) 0)
 228 #define XFS_BMBT_TRACE_ARGI(c,i)                        ((void) 0)
 229 #define XFS_BMBT_TRACE_ARGIFK(c,i,f,k)                  ((void) 0)
 230 #define XFS_BMBT_TRACE_ARGIFR(c,i,f,r)                  ((void) 0)
 231 #define XFS_BMBT_TRACE_ARGIK(c,i,k)                     ((void) 0)
 232 #define XFS_BMBT_TRACE_CURSOR(c,s)                      ((void) 0)
 233
 234 /* space allocation */
 235 #define xfs_alloc_search_busy(tp,ag,b,len)              ((void) 0)
 236 #define xfs_alloc_mark_busy(tp,ag,b,len)                ((void) 0)
 237
 238 /* anything else */
 239 #if !defined(__sgi__)
 240 typedef __uint32_t uint_t;
 241 typedef __uint32_t inst_t;      /* an instruction */
 242 #endif
 243 typedef struct { dev_t dev; } xfs_buftarg_t;
 244 #undef MASK
 245 #define NBPP            getpagesize()
 246 #define STATIC
 247 #define ATTR_ROOT       0x0002  /* use attrs in root namespace */
 248 #define ktrace_t        void
 249 #define m_ddev_targp    m_dev
 250 #define unlikely(x)     (x)
 251 #define kdev_none(x)    (!(x))
 252 #define KERN_WARNING
 253 #define XFS_ERROR(e)    (e)
 254 #define XFS_ERRLEVEL_LOW                1
 255 #define XFS_ERROR_REPORT(e,l,mp)        ((void) 0)
 256 #define XFS_CORRUPTION_ERROR(e,l,mp,m)  ((void) 0)
 257 #define XFS_TEST_ERROR(expr,a,b,c)      ( expr )
 258 #define TRACE_FREE(s,a,b,x,f)           ((void) 0)
 259 #define TRACE_ALLOC(s,a)                ((void) 0)
 260 #define TRACE_MODAGF(a,b,c)             ((void) 0)
 261 #define XFS_FORCED_SHUTDOWN(mp)         0
 262 #define XFS_STATS_INC(count)            do { } while (0)
 263 #define XFS_STATS_DEC(count, x)         do { } while (0)
 264 #define XFS_STATS_ADD(count, x)         do { } while (0)
 265 #define XFS_MOUNT_WSYNC                 0       /* ignored in userspace */
 266 #define XFS_MOUNT_NOALIGN               0       /* ignored in userspace */
 267 #define XFS_MOUNT_32BITINODES           0x1     /* enforce in userspace */
 268 #define XFS_ILOCK_EXCL                  0
 269 #define down_read(a)                    ((void) 0)
 270 #define up_read(a)                      ((void) 0)
 271 #define mrlock(a,b,c)                   ((void) 0)
 272 #define mraccunlock(a)                  ((void) 0)
 273 #define mrunlock(a)                     ((void) 0)
 274 #define mraccess(a)                     ((void) 0)
 275 #define ismrlocked(a,b)                 1
 276 #define spinlock_init(a,b)              ((void) 0)
 277 #define spin_lock(a)                    ((void) 0)
 278 #define spin_unlock(a)                  ((void) 0)
 279 #define __return_address                __builtin_return_address(0)
 280 #define xfs_btree_reada_bufl(m,fsb,c)   ((void) 0)
 281 #define xfs_btree_reada_bufs(m,fsb,c,x) ((void) 0)
 282 #undef  XFS_DIR_SHORTFORM_VALIDATE_ONDISK
 283 #define XFS_DIR_SHORTFORM_VALIDATE_ONDISK(mp,dip) 0
 284 #define XFS_TRANS_MOD_DQUOT_BYINO(mp,tp,ip,field,delta)
 285 #define XFS_TRANS_RESERVE_BLKQUOTA(mp,tp,ip,nblks)      0
 286 #define XFS_TRANS_UNRESERVE_BLKQUOTA(mp,tp,ip,nblks)
 287 #define XFS_TRANS_RESERVE_QUOTA_NBLKS(mp,tp,ip,nblks,ninos,fl)
 288
 289 /* These are lifted from the kernel */
 290 #define get_unaligned(ptr) \
 291   ({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
 292
 293 #define put_unaligned(val, ptr)                 \
 294   ({ __typeof__(*(ptr)) __tmp = (val);          \
 295      memmove((ptr), &__tmp, sizeof(*(ptr)));    \
 296      (void)0; })
 297
 298 #if (__GNUC__ < 2) || ((__GNUC__ == 2) && (__GNUC_MINOR__ <= 95))
 299 # define xfs_fs_cmn_err(a,b,msg,args...)( fprintf(stderr, msg, ## args) )
 300 # define cmn_err(a,msg,args...)         ( fprintf(stderr, msg, ## args) )
 301 # define printk(msg,args...)            ( fprintf(stderr, msg, ## args) )
 302 #else
 303 # define xfs_fs_cmn_err(a,b,...)        ( fprintf(stderr, __VA_ARGS__) )
 304 # define cmn_err(a,...)                 ( fprintf(stderr, __VA_ARGS__) )
 305 # define printk(...)                    ( fprintf(stderr, __VA_ARGS__) )
 306 #endif
 307
 308 #define do_mod(a, b)    ((a) % (b))
 309 #define do_div(n,base)  ({ \
 310         int __res; \
 311         __res = ((unsigned long) n) % (unsigned) base; \
 312         n = ((unsigned long) n) / (unsigned) base; \
 313         __res; })
 314
 315 static inline int atomicIncWithWrap(int *a, int b)
 316 {
 317         int r = *a;
 318         (*a)++;
 319         if (*a == b)
 320                 *a = 0;
 321         return r;
 322 }
 323
 324
 325 /*
 326  * Prototypes needed for a clean build
 327  */
 328
 329 /* xfs_alloc.c */
 330 int  xfs_alloc_get_freelist (xfs_trans_t *, xfs_buf_t *, xfs_agblock_t *);
 331 void xfs_alloc_log_agf (xfs_trans_t *, xfs_buf_t *, int);
 332 int  xfs_alloc_put_freelist (xfs_trans_t *, xfs_buf_t *, xfs_buf_t *,
 333                         xfs_agblock_t);
 334 int  xfs_alloc_read_agf (xfs_mount_t *, xfs_trans_t *, xfs_agnumber_t,
 335                         int, xfs_buf_t **);
 336 int  xfs_alloc_vextent (xfs_alloc_arg_t *);
 337 int  xfs_alloc_pagf_init (xfs_mount_t *, xfs_trans_t *, xfs_agnumber_t, int);
 338 int  xfs_alloc_ag_vextent_size (xfs_alloc_arg_t *);
 339 int  xfs_alloc_ag_vextent_near (xfs_alloc_arg_t *);
 340 int  xfs_alloc_ag_vextent_exact (xfs_alloc_arg_t *);
 341 int  xfs_alloc_ag_vextent_small (xfs_alloc_arg_t *, xfs_btree_cur_t *,
 342                         xfs_agblock_t *, xfs_extlen_t *, int *);
 343
 344 /* xfs_ialloc.c */
 345 int  xfs_dialloc (xfs_trans_t *, xfs_ino_t, mode_t, int, xfs_buf_t **,
 346                         boolean_t *, xfs_ino_t *);
 347 void xfs_ialloc_log_agi (xfs_trans_t *, xfs_buf_t *, int);
 348 int  xfs_ialloc_read_agi (xfs_mount_t *, xfs_trans_t *, xfs_agnumber_t,
 349                         xfs_buf_t **);
 350 int  xfs_dilocate (xfs_mount_t *, xfs_trans_t *, xfs_ino_t, xfs_fsblock_t *,
 351                         int *, int *, uint);
 352
 353 /* xfs_rtalloc.c */
 354 int  xfs_rtfree_extent (xfs_trans_t *, xfs_rtblock_t, xfs_extlen_t);
 355 int  xfs_rtmodify_range (xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
 356                         xfs_extlen_t, int);
 357 int  xfs_rtmodify_summary (xfs_mount_t *, xfs_trans_t *, int,
 358                         xfs_rtblock_t, int, xfs_buf_t **, xfs_fsblock_t *);
 359
 360 /* xfs_btree.c */
 361 extern xfs_zone_t *xfs_btree_cur_zone;
 362 void xfs_btree_check_key (xfs_btnum_t, void *, void *);
 363 void xfs_btree_check_rec (xfs_btnum_t, void *, void *);
 364 int  xfs_btree_check_lblock (xfs_btree_cur_t *, xfs_btree_lblock_t *,
 365                         int, xfs_buf_t *);
 366 int  xfs_btree_check_sblock (xfs_btree_cur_t *, xfs_btree_sblock_t *,
 367                         int, xfs_buf_t *);
 368 int  xfs_btree_check_sptr (xfs_btree_cur_t *, xfs_agblock_t, int);
 369 int  xfs_btree_check_lptr (xfs_btree_cur_t *, xfs_dfsbno_t, int);
 370 void xfs_btree_del_cursor (xfs_btree_cur_t *, int);
 371 int  xfs_btree_dup_cursor (xfs_btree_cur_t *, xfs_btree_cur_t **);
 372 int  xfs_btree_firstrec (xfs_btree_cur_t *, int);
 373 xfs_btree_block_t *xfs_btree_get_block (xfs_btree_cur_t *, int, xfs_buf_t **);
 374 xfs_buf_t *xfs_btree_get_bufs (xfs_mount_t *, xfs_trans_t *, xfs_agnumber_t,
 375                         xfs_agblock_t, uint);
 376 xfs_buf_t *xfs_btree_get_bufl (xfs_mount_t *, xfs_trans_t *tp,
 377                         xfs_fsblock_t, uint);
 378 xfs_btree_cur_t *xfs_btree_init_cursor (xfs_mount_t *, xfs_trans_t *,
 379                         xfs_buf_t *, xfs_agnumber_t, xfs_btnum_t,
 380                         xfs_inode_t *, int);
 381 int  xfs_btree_islastblock (xfs_btree_cur_t *, int);
 382 int  xfs_btree_lastrec (xfs_btree_cur_t *, int);
 383 void xfs_btree_offsets (__int64_t, const short *, int, int *, int *);
 384 void xfs_btree_setbuf (xfs_btree_cur_t *, int, xfs_buf_t *);
 385 int  xfs_btree_read_bufs (xfs_mount_t *, xfs_trans_t *, xfs_agnumber_t,
 386                         xfs_agblock_t, uint, xfs_buf_t **, int);
 387 int  xfs_btree_read_bufl (xfs_mount_t *, xfs_trans_t *, xfs_fsblock_t,
 388                         uint, xfs_buf_t **, int);
 389 int  xfs_btree_readahead_core (xfs_btree_cur_t *, int, int);
 390 static inline int xfs_btree_readahead (xfs_btree_cur_t *cur, int lev, int lr)
 391 {
 392         if ((cur->bc_ra[lev] | lr) == cur->bc_ra[lev])
 393                 return 0;
 394         return xfs_btree_readahead_core(cur, lev, lr);
 395 }
 396
 397
 398 /* xfs_inode.c */
 399 int  xfs_ialloc (xfs_trans_t *, xfs_inode_t *, mode_t, nlink_t, dev_t, cred_t *,
 400                 xfs_prid_t, int, xfs_buf_t **, boolean_t *, xfs_inode_t **);
 401 int  xfs_iread_extents (xfs_trans_t *, xfs_inode_t *, int);
 402 int  xfs_imap (xfs_mount_t *, xfs_trans_t *, xfs_ino_t, xfs_imap_t *, uint);
 403 int  xfs_iextents_copy (xfs_inode_t *, xfs_bmbt_rec_t *, int);
 404 int  xfs_iflush_int (xfs_inode_t *, xfs_buf_t *);
 405 int  xfs_iflush_fork (xfs_inode_t *, xfs_dinode_t *, xfs_inode_log_item_t *,
 406                 int, xfs_buf_t *);
 407 int  xfs_iformat_local (xfs_inode_t *, xfs_dinode_t *, int, int);
 408 int  xfs_iformat_extents (xfs_inode_t *, xfs_dinode_t *, int);
 409 int  xfs_iformat_btree (xfs_inode_t *, xfs_dinode_t *, int);
 410 void xfs_iroot_realloc (xfs_inode_t *, int, int);
 411 void xfs_idata_realloc (xfs_inode_t *, int, int);
 412 void xfs_iext_realloc (xfs_inode_t *, int, int);
 413 void xfs_idestroy_fork (xfs_inode_t *, int);
 414 uint xfs_iroundup (uint);
 415
 416 /* xfs_bmap.c */
 417 xfs_bmbt_rec_t *xfs_bmap_search_extents (xfs_inode_t *ip,
 418                         xfs_fileoff_t, int, int *, xfs_extnum_t *,
 419                         xfs_bmbt_irec_t *, xfs_bmbt_irec_t *);
 420 int  xfs_bmap_read_extents (xfs_trans_t *, xfs_inode_t *, int);
 421 void xfs_bmap_add_free (xfs_fsblock_t, xfs_filblks_t, xfs_bmap_free_t *,
 422                         xfs_mount_t *);
 423 int  xfs_bmap_first_unused (xfs_trans_t *, xfs_inode_t *, xfs_extlen_t,
 424                         xfs_fileoff_t *, int);
 425 int  xfs_bmap_last_offset (xfs_trans_t *, xfs_inode_t *, xfs_fileoff_t *, int);
 426 int  xfs_bmap_last_before (xfs_trans_t *, xfs_inode_t *, xfs_fileoff_t *, int);
 427 int  xfs_bmap_one_block (xfs_inode_t *, int);
 428 int  xfs_bmapi_single (xfs_trans_t *, xfs_inode_t *, int, xfs_fsblock_t *,
 429                         xfs_fileoff_t);
 430 int  xfs_bmapi (xfs_trans_t *, xfs_inode_t *, xfs_fileoff_t,
 431                         xfs_filblks_t, int, xfs_fsblock_t *, xfs_extlen_t,
 432                         xfs_bmbt_irec_t *, int *, xfs_bmap_free_t *);
 433 int  xfs_bunmapi (xfs_trans_t *, xfs_inode_t *, xfs_fileoff_t,
 434                         xfs_filblks_t, int, xfs_extnum_t, xfs_fsblock_t *,
 435                         xfs_bmap_free_t *, int *);
 436 int  xfs_bmap_add_extent_hole_delay (xfs_inode_t *ip, xfs_extnum_t,
 437                         xfs_btree_cur_t *, xfs_bmbt_irec_t *, int *, int);
 438 int  xfs_bmap_add_extent_hole_real (xfs_inode_t *, xfs_extnum_t,
 439                         xfs_btree_cur_t *, xfs_bmbt_irec_t *, int *, int);
 440 int  xfs_bmap_add_extent_unwritten_real (xfs_inode_t *, xfs_extnum_t,
 441                         xfs_btree_cur_t **, xfs_bmbt_irec_t *, int *);
 442 int  xfs_bmap_add_extent_delay_real (xfs_inode_t *, xfs_extnum_t,
 443                         xfs_btree_cur_t **, xfs_bmbt_irec_t *, xfs_filblks_t *,
 444                         xfs_fsblock_t *, xfs_bmap_free_t *, int *, int);
 445 int  xfs_bmap_extents_to_btree (xfs_trans_t *, xfs_inode_t *, xfs_fsblock_t *,
 446                         xfs_bmap_free_t *, xfs_btree_cur_t **, int, int *, int);
 447 void xfs_bmap_delete_exlist (xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, int);
 448 xfs_filblks_t xfs_bmap_worst_indlen (xfs_inode_t *, xfs_filblks_t);
 449 int  xfs_bmap_isaeof (xfs_inode_t *, xfs_fileoff_t, int, char *);
 450 void xfs_bmap_insert_exlist (xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
 451                         xfs_bmbt_irec_t *, int);
 452
 453 /* xfs_bmap_btree.c */
 454 int  xfs_check_nostate_extents (xfs_bmbt_rec_t *, xfs_extnum_t);
 455 void xfs_bmbt_log_ptrs (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 456 void xfs_bmbt_log_keys (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 457 int  xfs_bmbt_newroot (xfs_btree_cur_t *, int *, int *);
 458 int  xfs_bmbt_killroot (xfs_btree_cur_t *);
 459 int  xfs_bmbt_updkey (xfs_btree_cur_t *, xfs_bmbt_key_t *, int);
 460 int  xfs_bmbt_lshift (xfs_btree_cur_t *, int, int *);
 461 int  xfs_bmbt_rshift (xfs_btree_cur_t *, int, int *);
 462 int  xfs_bmbt_split (xfs_btree_cur_t *, int, xfs_fsblock_t *,
 463                         xfs_bmbt_key_t *, xfs_btree_cur_t **, int *);
 464 void xfs_bmbt_set_all (xfs_bmbt_rec_t *, xfs_bmbt_irec_t *);
 465 void xfs_bmbt_set_allf (xfs_bmbt_rec_t *, xfs_fileoff_t, xfs_fsblock_t,
 466                         xfs_filblks_t, xfs_exntst_t);
 467 void xfs_bmbt_set_blockcount (xfs_bmbt_rec_t *, xfs_filblks_t);
 468 void xfs_bmbt_set_startblock (xfs_bmbt_rec_t *, xfs_fsblock_t);
 469 void xfs_bmbt_set_startoff (xfs_bmbt_rec_t *, xfs_fileoff_t);
 470 void xfs_bmbt_set_state (xfs_bmbt_rec_t *, xfs_exntst_t);
 471 void xfs_bmbt_log_block (struct xfs_btree_cur *, struct xfs_buf *, int);
 472 void xfs_bmbt_log_recs (struct xfs_btree_cur *, struct xfs_buf *, int, int);
 473 int  xfs_bmbt_lookup_eq (struct xfs_btree_cur *, xfs_fileoff_t, xfs_fsblock_t,
 474                         xfs_filblks_t, int *);
 475 xfs_fsblock_t xfs_bmbt_get_startblock (xfs_bmbt_rec_t *);
 476 xfs_filblks_t xfs_bmbt_get_blockcount (xfs_bmbt_rec_t *);
 477 xfs_fileoff_t xfs_bmbt_get_startoff (xfs_bmbt_rec_t *);
 478 xfs_exntst_t  xfs_bmbt_get_state (xfs_bmbt_rec_t *);
 479 xfs_bmbt_block_t * xfs_bmbt_get_block (xfs_btree_cur_t *, int,
 480                         struct xfs_buf **);
 481 int  xfs_bmbt_increment (struct xfs_btree_cur *, int, int *);
 482 int  xfs_bmbt_insert (struct xfs_btree_cur *, int *);
 483 int  xfs_bmbt_decrement (struct xfs_btree_cur *, int, int *);
 484 int  xfs_bmbt_delete (struct xfs_btree_cur *, int *);
 485 int  xfs_bmbt_update (struct xfs_btree_cur *, xfs_fileoff_t, xfs_fsblock_t,
 486                         xfs_filblks_t, xfs_exntst_t);
 487 void xfs_bmbt_to_bmdr (xfs_bmbt_block_t *, int, xfs_bmdr_block_t *, int);
 488 void xfs_bmdr_to_bmbt (xfs_bmdr_block_t *, int, xfs_bmbt_block_t *, int);
 489 #if ARCH_CONVERT != ARCH_NOCONVERT
 490 xfs_fileoff_t xfs_bmbt_disk_get_startoff (xfs_bmbt_rec_t *);
 491 void xfs_bmbt_disk_set_all (xfs_bmbt_rec_t *, xfs_bmbt_irec_t *);
 492 void xfs_bmbt_disk_set_allf (xfs_bmbt_rec_t *, xfs_fileoff_t, xfs_fsblock_t,
 493                         xfs_filblks_t, xfs_exntst_t);
 494 #else
 495 #define xfs_bmbt_disk_get_startoff(r) xfs_bmbt_get_startoff(r)
 496 #define xfs_bmbt_disk_set_all(r, s) xfs_bmbt_set_all(r, s)
 497 #define xfs_bmbt_disk_set_allf(r, o, b, c, v) xfs_bmbt_set_allf(r, o, b, c, v)
 498 #endif
 499
 500 /* xfs_ialloc_btree.c */
 501 int  xfs_inobt_newroot (xfs_btree_cur_t *, int *);
 502 int  xfs_inobt_rshift (xfs_btree_cur_t *, int, int *);
 503 int  xfs_inobt_lshift (xfs_btree_cur_t *, int, int *);
 504 int  xfs_inobt_split (xfs_btree_cur_t *, int, xfs_agblock_t *,
 505                         xfs_inobt_key_t *, xfs_btree_cur_t **, int *);
 506 void xfs_inobt_log_keys (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 507 void xfs_inobt_log_ptrs (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 508 void xfs_inobt_log_recs (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 509 void xfs_inobt_log_block (xfs_trans_t *, xfs_buf_t *, int);
 510 int  xfs_inobt_updkey (xfs_btree_cur_t *, xfs_inobt_key_t *, int);
 511
 512 /* xfs_alloc_btree.c */
 513 void xfs_alloc_log_ptrs (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 514 void xfs_alloc_log_keys (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 515 void xfs_alloc_log_recs (xfs_btree_cur_t *, xfs_buf_t *, int, int);
 516 void xfs_alloc_log_block (xfs_trans_t *, xfs_buf_t *, int);
 517 int  xfs_alloc_updkey (xfs_btree_cur_t *, xfs_alloc_key_t *, int);
 518 int  xfs_alloc_lshift (xfs_btree_cur_t *, int, int *);
 519 int  xfs_alloc_rshift (xfs_btree_cur_t *, int, int *);
 520 int  xfs_alloc_newroot (xfs_btree_cur_t *, int *);
 521 int  xfs_alloc_split (xfs_btree_cur_t *, int, xfs_agblock_t *,
 522                         xfs_alloc_key_t *, xfs_btree_cur_t **, int *);
 523
 524 /* xfs_da_btree.c */
 525 xfs_dabuf_t *xfs_da_buf_make (int, xfs_buf_t **, inst_t *);
 526 void xfs_da_binval (struct xfs_trans *, xfs_dabuf_t *);
 527 void xfs_da_buf_done (xfs_dabuf_t *);
 528 int  xfs_da_root_join (xfs_da_state_t *, xfs_da_state_blk_t *);
 529 int  xfs_da_root_split (xfs_da_state_t *, xfs_da_state_blk_t *,
 530                         xfs_da_state_blk_t *);
 531 void xfs_da_node_add (xfs_da_state_t *, xfs_da_state_blk_t *,
 532                         xfs_da_state_blk_t *);
 533 int  xfs_da_node_split (xfs_da_state_t *, xfs_da_state_blk_t *,
 534                         xfs_da_state_blk_t *, xfs_da_state_blk_t *, int, int *);
 535 void xfs_da_node_rebalance (xfs_da_state_t *, xfs_da_state_blk_t *,
 536                         xfs_da_state_blk_t *);
 537 void xfs_da_node_remove (xfs_da_state_t *, xfs_da_state_blk_t *);
 538 void xfs_da_node_unbalance (xfs_da_state_t *, xfs_da_state_blk_t *,
 539                         xfs_da_state_blk_t *);
 540 int  xfs_da_node_order (xfs_dabuf_t *, xfs_dabuf_t *);
 541 int  xfs_da_node_toosmall (xfs_da_state_t *, int *);
 542 uint xfs_da_node_lasthash (xfs_dabuf_t *, int *);
 543 int  xfs_da_do_buf (xfs_trans_t *, xfs_inode_t *, xfs_dablk_t, xfs_daddr_t *,
 544                         xfs_dabuf_t **, int, int, inst_t *);
 545 int  xfs_da_split (xfs_da_state_t *);
 546 int  xfs_da_node_create (xfs_da_args_t *, xfs_dablk_t, int,
 547                         xfs_dabuf_t **, int);
 548 int  xfs_da_join (xfs_da_state_t *);
 549 void xfs_da_fixhashpath (xfs_da_state_t *, xfs_da_state_path_t *);
 550 int  xfs_da_node_lookup_int (xfs_da_state_t *, int *);
 551 int  xfs_da_path_shift (xfs_da_state_t *, xfs_da_state_path_t *,
 552                         int, int, int *);
 553 int  xfs_da_blk_unlink (xfs_da_state_t *, xfs_da_state_blk_t *,
 554                         xfs_da_state_blk_t *);
 555 int  xfs_da_blk_link (xfs_da_state_t *, xfs_da_state_blk_t *,
 556                         xfs_da_state_blk_t *);
 557 xfs_da_state_t *xfs_da_state_alloc (void);
 558 void xfs_da_state_free (xfs_da_state_t *);
 559 void xfs_da_state_kill_altpath (xfs_da_state_t *);
 560
 561 /* xfs_dir.c */
 562 int  xfs_dir_node_addname (xfs_da_args_t *);
 563 int  xfs_dir_leaf_lookup (xfs_da_args_t *);
 564 int  xfs_dir_node_lookup (xfs_da_args_t *);
 565 int  xfs_dir_leaf_replace (xfs_da_args_t *);
 566 int  xfs_dir_node_replace (xfs_da_args_t *);
 567 int  xfs_dir_node_removename (xfs_da_args_t *);
 568 int  xfs_dir_leaf_removename (xfs_da_args_t *, int *, int *);
 569
 570 /* xfs_dir_leaf.c */
 571 void xfs_dir_leaf_rebalance (xfs_da_state_t *, xfs_da_state_blk_t *,
 572                         xfs_da_state_blk_t *);
 573 void xfs_dir_leaf_add_work (xfs_dabuf_t *, xfs_da_args_t *, int, int);
 574 int  xfs_dir_leaf_compact (xfs_trans_t *, xfs_dabuf_t *, int, int);
 575 int  xfs_dir_leaf_figure_balance (xfs_da_state_t *, xfs_da_state_blk_t *,
 576                         xfs_da_state_blk_t *, int *, int *);
 577 void xfs_dir_leaf_moveents (xfs_dir_leafblock_t *, int,
 578                         xfs_dir_leafblock_t *, int, int, xfs_mount_t *);
 579
 580 /* xfs_dir2_leaf.c */
 581 void xfs_dir2_leaf_check (xfs_inode_t *, xfs_dabuf_t *);
 582 int  xfs_dir2_leaf_lookup_int (xfs_da_args_t *, xfs_dabuf_t **,
 583                         int *, xfs_dabuf_t **);
 584
 585 /* xfs_dir2_block.c */
 586 void xfs_dir2_block_log_tail (xfs_trans_t *, xfs_dabuf_t *);
 587 void xfs_dir2_block_log_leaf (xfs_trans_t *, xfs_dabuf_t *, int, int);
 588 int  xfs_dir2_block_lookup_int (xfs_da_args_t *, xfs_dabuf_t **, int *);
 589
 590 /* xfs_dir2_node.c */
 591 void xfs_dir2_leafn_check (xfs_inode_t *, xfs_dabuf_t *);
 592 int  xfs_dir2_leafn_remove (xfs_da_args_t *, xfs_dabuf_t *, int,
 593                         xfs_da_state_blk_t *, int *);
 594 int  xfs_dir2_node_addname_int (xfs_da_args_t *, xfs_da_state_blk_t *);
 595
 596 /* xfs_dir2_sf.c */
 597 void xfs_dir2_sf_check (xfs_da_args_t *);
 598 int  xfs_dir2_sf_addname_pick (xfs_da_args_t *, int,
 599                         xfs_dir2_sf_entry_t **, xfs_dir2_data_aoff_t *);
 600 void xfs_dir2_sf_addname_easy (xfs_da_args_t *, xfs_dir2_sf_entry_t *,
 601                         xfs_dir2_data_aoff_t, int);
 602 void xfs_dir2_sf_addname_hard (xfs_da_args_t *, int, int);
 603 void xfs_dir2_sf_toino8 (xfs_da_args_t *);
 604 void xfs_dir2_sf_toino4 (xfs_da_args_t *);
 605
 606 /* xfs_attr_leaf.c */
 607 void xfs_attr_leaf_rebalance (xfs_da_state_t *, xfs_da_state_blk_t *,
 608                         xfs_da_state_blk_t *);
 609 int  xfs_attr_leaf_add_work (xfs_dabuf_t *, xfs_da_args_t *, int);
 610 void xfs_attr_leaf_compact (xfs_trans_t *, xfs_dabuf_t *);
 611 void xfs_attr_leaf_moveents (xfs_attr_leafblock_t *, int,
 612                         xfs_attr_leafblock_t *, int, int, xfs_mount_t *);
 613 int  xfs_attr_leaf_figure_balance (xfs_da_state_t *, xfs_da_state_blk_t *,
 614                         xfs_da_state_blk_t *, int *, int *);
 615
 616 /* xfs_trans_item.c */
 617 xfs_log_item_desc_t *xfs_trans_add_item (xfs_trans_t *, xfs_log_item_t *);
 618 xfs_log_item_desc_t *xfs_trans_find_item (xfs_trans_t *, xfs_log_item_t *);
 619 void xfs_trans_free_item (xfs_trans_t *, xfs_log_item_desc_t *);
 620 void xfs_trans_free_items (xfs_trans_t *, int);
 621
 622 /* xfs_trans_buf.c */
 623 xfs_buf_t *xfs_trans_buf_item_match (xfs_trans_t *, xfs_buftarg_t *,
 624                         xfs_daddr_t, int);
 625 xfs_buf_t *xfs_trans_buf_item_match_all (xfs_trans_t *, xfs_buftarg_t *,
 626                         xfs_daddr_t, int);
 627
 628 /* xfs_inode_item.c */
 629 void xfs_inode_item_init (xfs_inode_t *, xfs_mount_t *);
 630
 631 /* xfs_buf_item.c */
 632 void xfs_buf_item_init (xfs_buf_t *, xfs_mount_t *);
 633 void xfs_buf_item_log (xfs_buf_log_item_t *, uint, uint);
 634
 635 /* local source files */
 636 int  xfs_mod_incore_sb (xfs_mount_t *, xfs_sb_field_t, int, int);
 637 void xfs_trans_mod_sb (xfs_trans_t *, uint, long);
 638 int  xfs_trans_unlock_chunk (xfs_log_item_chunk_t *, int, int, xfs_lsn_t);
 639
 640
 641 #ifndef DEBUG
 642 #define xfs_inobp_check(mp,bp)                          ((void) 0)
 643 #define xfs_btree_check_key(a,b,c)                      ((void) 0)
 644 #define xfs_btree_check_rec(a,b,c)                      ((void) 0)
 645 #define xfs_btree_check_block(a,b,c,d)                  ((void) 0)
 646 #define xfs_dir2_sf_check(args)                         ((void) 0)
 647 #define xfs_dir2_leaf_check(dp,bp)                      ((void) 0)
 648 #define xfs_dir2_leafn_check(dp,bp)                     ((void) 0)
 649 #undef xfs_dir2_data_check
 650 #define xfs_dir2_data_check(dp,bp)                      ((void) 0)
 651 #endif