git.oblomov.eu Git - linux-2.6/blob - fs/xfs/xfs_dir.c

   1 /*
   2  * Copyright (c) 2000-2001,2005 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 #include "xfs.h"
  19 #include "xfs_fs.h"
  20 #include "xfs_types.h"
  21 #include "xfs_log.h"
  22 #include "xfs_inum.h"
  23 #include "xfs_trans.h"
  24 #include "xfs_sb.h"
  25 #include "xfs_dir.h"
  26 #include "xfs_dir2.h"
  27 #include "xfs_dmapi.h"
  28 #include "xfs_mount.h"
  29 #include "xfs_da_btree.h"
  30 #include "xfs_bmap_btree.h"
  31 #include "xfs_alloc_btree.h"
  32 #include "xfs_ialloc_btree.h"
  33 #include "xfs_alloc.h"
  34 #include "xfs_btree.h"
  35 #include "xfs_dir_sf.h"
  36 #include "xfs_dir2_sf.h"
  37 #include "xfs_attr_sf.h"
  38 #include "xfs_dinode.h"
  39 #include "xfs_inode.h"
  40 #include "xfs_bmap.h"
  41 #include "xfs_dir_leaf.h"
  42 #include "xfs_error.h"
  43
  44 /*
  45  * xfs_dir.c
  46  *
  47  * Provide the external interfaces to manage directories.
  48  */
  49
  50 /*========================================================================
  51  * Function prototypes for the kernel.
  52  *========================================================================*/
  53
  54 /*
  55  * Functions for the dirops interfaces.
  56  */
  57 static void     xfs_dir_mount(struct xfs_mount *mp);
  58
  59 static int      xfs_dir_isempty(struct xfs_inode *dp);
  60
  61 static int      xfs_dir_init(struct xfs_trans *trans,
  62                              struct xfs_inode *dir,
  63                              struct xfs_inode *parent_dir);
  64
  65 static int      xfs_dir_createname(struct xfs_trans *trans,
  66                                    struct xfs_inode *dp,
  67                                    char *name_string,
  68                                    int name_len,
  69                                    xfs_ino_t inode_number,
  70                                    xfs_fsblock_t *firstblock,
  71                                    xfs_bmap_free_t *flist,
  72                                    xfs_extlen_t total);
  73
  74 static int      xfs_dir_lookup(struct xfs_trans *tp,
  75                                struct xfs_inode *dp,
  76                                char *name_string,
  77                                int name_length,
  78                                xfs_ino_t *inode_number);
  79
  80 static int      xfs_dir_removename(struct xfs_trans *trans,
  81                                    struct xfs_inode *dp,
  82                                    char *name_string,
  83                                    int name_length,
  84                                    xfs_ino_t ino,
  85                                    xfs_fsblock_t *firstblock,
  86                                    xfs_bmap_free_t *flist,
  87                                    xfs_extlen_t total);
  88
  89 static int      xfs_dir_getdents(struct xfs_trans *tp,
  90                                  struct xfs_inode *dp,
  91                                  struct uio *uiop,
  92                                  int *eofp);
  93
  94 static int      xfs_dir_replace(struct xfs_trans *tp,
  95                                 struct xfs_inode *dp,
  96                                 char *name_string,
  97                                 int name_length,
  98                                 xfs_ino_t inode_number,
  99                                 xfs_fsblock_t *firstblock,
 100                                 xfs_bmap_free_t *flist,
 101                                 xfs_extlen_t total);
 102
 103 static int      xfs_dir_canenter(struct xfs_trans *tp,
 104                                  struct xfs_inode *dp,
 105                                  char *name_string,
 106                                  int name_length);
 107
 108 static int      xfs_dir_shortform_validate_ondisk(xfs_mount_t *mp,
 109                                                   xfs_dinode_t *dip);
 110
 111 xfs_dirops_t xfsv1_dirops = {
 112         .xd_mount                       = xfs_dir_mount,
 113         .xd_isempty                     = xfs_dir_isempty,
 114         .xd_init                        = xfs_dir_init,
 115         .xd_createname                  = xfs_dir_createname,
 116         .xd_lookup                      = xfs_dir_lookup,
 117         .xd_removename                  = xfs_dir_removename,
 118         .xd_getdents                    = xfs_dir_getdents,
 119         .xd_replace                     = xfs_dir_replace,
 120         .xd_canenter                    = xfs_dir_canenter,
 121         .xd_shortform_validate_ondisk   = xfs_dir_shortform_validate_ondisk,
 122         .xd_shortform_to_single         = xfs_dir_shortform_to_leaf,
 123 };
 124
 125 /*
 126  * Internal routines when dirsize == XFS_LBSIZE(mp).
 127  */
 128 STATIC int xfs_dir_leaf_lookup(xfs_da_args_t *args);
 129 STATIC int xfs_dir_leaf_removename(xfs_da_args_t *args, int *number_entries,
 130                                                  int *total_namebytes);
 131 STATIC int xfs_dir_leaf_getdents(xfs_trans_t *trans, xfs_inode_t *dp,
 132                                              uio_t *uio, int *eofp,
 133                                              xfs_dirent_t *dbp,
 134                                              xfs_dir_put_t put);
 135 STATIC int xfs_dir_leaf_replace(xfs_da_args_t *args);
 136
 137 /*
 138  * Internal routines when dirsize > XFS_LBSIZE(mp).
 139  */
 140 STATIC int xfs_dir_node_addname(xfs_da_args_t *args);
 141 STATIC int xfs_dir_node_lookup(xfs_da_args_t *args);
 142 STATIC int xfs_dir_node_removename(xfs_da_args_t *args);
 143 STATIC int xfs_dir_node_getdents(xfs_trans_t *trans, xfs_inode_t *dp,
 144                                              uio_t *uio, int *eofp,
 145                                              xfs_dirent_t *dbp,
 146                                              xfs_dir_put_t put);
 147 STATIC int xfs_dir_node_replace(xfs_da_args_t *args);
 148
 149 #if defined(XFS_DIR_TRACE)
 150 ktrace_t *xfs_dir_trace_buf;
 151 #endif
 152
 153
 154 /*========================================================================
 155  * Overall external interface routines.
 156  *========================================================================*/
 157
 158 xfs_dahash_t    xfs_dir_hash_dot, xfs_dir_hash_dotdot;
 159
 160 /*
 161  * One-time startup routine called from xfs_init().
 162  */
 163 void
 164 xfs_dir_startup(void)
 165 {
 166         xfs_dir_hash_dot = xfs_da_hashname(".", 1);
 167         xfs_dir_hash_dotdot = xfs_da_hashname("..", 2);
 168 }
 169
 170 /*
 171  * Initialize directory-related fields in the mount structure.
 172  */
 173 static void
 174 xfs_dir_mount(xfs_mount_t *mp)
 175 {
 176         uint shortcount, leafcount, count;
 177
 178         mp->m_dirversion = 1;
 179         if (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) {
 180                 shortcount = (mp->m_attroffset -
 181                                 (uint)sizeof(xfs_dir_sf_hdr_t)) /
 182                                  (uint)sizeof(xfs_dir_sf_entry_t);
 183                 leafcount = (XFS_LBSIZE(mp) -
 184                                 (uint)sizeof(xfs_dir_leaf_hdr_t)) /
 185                                  ((uint)sizeof(xfs_dir_leaf_entry_t) +
 186                                   (uint)sizeof(xfs_dir_leaf_name_t));
 187         } else {
 188                 shortcount = (XFS_BMDR_SPACE_CALC(MINABTPTRS) -
 189                               (uint)sizeof(xfs_dir_sf_hdr_t)) /
 190                                (uint)sizeof(xfs_dir_sf_entry_t);
 191                 leafcount = (XFS_LBSIZE(mp) -
 192                             (uint)sizeof(xfs_dir_leaf_hdr_t)) /
 193                              ((uint)sizeof(xfs_dir_leaf_entry_t) +
 194                               (uint)sizeof(xfs_dir_leaf_name_t));
 195         }
 196         count = shortcount > leafcount ? shortcount : leafcount;
 197         mp->m_dircook_elog = xfs_da_log2_roundup(count + 1);
 198         ASSERT(mp->m_dircook_elog <= mp->m_sb.sb_blocklog);
 199         mp->m_dir_node_ents = mp->m_attr_node_ents =
 200                 (XFS_LBSIZE(mp) - (uint)sizeof(xfs_da_node_hdr_t)) /
 201                 (uint)sizeof(xfs_da_node_entry_t);
 202         mp->m_dir_magicpct = (XFS_LBSIZE(mp) * 37) / 100;
 203         mp->m_dirblksize = mp->m_sb.sb_blocksize;
 204         mp->m_dirblkfsbs = 1;
 205 }
 206
 207 /*
 208  * Return 1 if directory contains only "." and "..".
 209  */
 210 static int
 211 xfs_dir_isempty(xfs_inode_t *dp)
 212 {
 213         xfs_dir_sf_hdr_t *hdr;
 214
 215         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 216         if (dp->i_d.di_size == 0)
 217                 return(1);
 218         if (dp->i_d.di_size > XFS_IFORK_DSIZE(dp))
 219                 return(0);
 220         hdr = (xfs_dir_sf_hdr_t *)dp->i_df.if_u1.if_data;
 221         return(hdr->count == 0);
 222 }
 223
 224 /*
 225  * Initialize a directory with its "." and ".." entries.
 226  */
 227 static int
 228 xfs_dir_init(xfs_trans_t *trans, xfs_inode_t *dir, xfs_inode_t *parent_dir)
 229 {
 230         xfs_da_args_t args;
 231         int error;
 232
 233         memset((char *)&args, 0, sizeof(args));
 234         args.dp = dir;
 235         args.trans = trans;
 236
 237         ASSERT((dir->i_d.di_mode & S_IFMT) == S_IFDIR);
 238         if ((error = xfs_dir_ino_validate(trans->t_mountp, parent_dir->i_ino)))
 239                 return error;
 240
 241         return(xfs_dir_shortform_create(&args, parent_dir->i_ino));
 242 }
 243
 244 /*
 245  * Generic handler routine to add a name to a directory.
 246  * Transitions directory from shortform to Btree as necessary.
 247  */
 248 static int                                                      /* error */
 249 xfs_dir_createname(xfs_trans_t *trans, xfs_inode_t *dp, char *name,
 250                    int namelen, xfs_ino_t inum, xfs_fsblock_t *firstblock,
 251                    xfs_bmap_free_t *flist, xfs_extlen_t total)
 252 {
 253         xfs_da_args_t args;
 254         int retval, newsize, done;
 255
 256         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 257
 258         if ((retval = xfs_dir_ino_validate(trans->t_mountp, inum)))
 259                 return (retval);
 260
 261         XFS_STATS_INC(xs_dir_create);
 262         /*
 263          * Fill in the arg structure for this request.
 264          */
 265         args.name = name;
 266         args.namelen = namelen;
 267         args.hashval = xfs_da_hashname(name, namelen);
 268         args.inumber = inum;
 269         args.dp = dp;
 270         args.firstblock = firstblock;
 271         args.flist = flist;
 272         args.total = total;
 273         args.whichfork = XFS_DATA_FORK;
 274         args.trans = trans;
 275         args.justcheck = 0;
 276         args.addname = args.oknoent = 1;
 277
 278         /*
 279          * Decide on what work routines to call based on the inode size.
 280          */
 281         done = 0;
 282         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 283                 newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
 284                 if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp)) {
 285                         retval = xfs_dir_shortform_addname(&args);
 286                         done = 1;
 287                 } else {
 288                         if (total == 0)
 289                                 return XFS_ERROR(ENOSPC);
 290                         retval = xfs_dir_shortform_to_leaf(&args);
 291                         done = retval != 0;
 292                 }
 293         }
 294         if (!done && xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 295                 retval = xfs_dir_leaf_addname(&args);
 296                 done = retval != ENOSPC;
 297                 if (!done) {
 298                         if (total == 0)
 299                                 return XFS_ERROR(ENOSPC);
 300                         retval = xfs_dir_leaf_to_node(&args);
 301                         done = retval != 0;
 302                 }
 303         }
 304         if (!done) {
 305                 retval = xfs_dir_node_addname(&args);
 306         }
 307         return(retval);
 308 }
 309
 310 /*
 311  * Generic handler routine to check if a name can be added to a directory,
 312  * without adding any blocks to the directory.
 313  */
 314 static int                                                      /* error */
 315 xfs_dir_canenter(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen)
 316 {
 317         xfs_da_args_t args;
 318         int retval, newsize;
 319
 320         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 321         /*
 322          * Fill in the arg structure for this request.
 323          */
 324         args.name = name;
 325         args.namelen = namelen;
 326         args.hashval = xfs_da_hashname(name, namelen);
 327         args.inumber = 0;
 328         args.dp = dp;
 329         args.firstblock = NULL;
 330         args.flist = NULL;
 331         args.total = 0;
 332         args.whichfork = XFS_DATA_FORK;
 333         args.trans = trans;
 334         args.justcheck = args.addname = args.oknoent = 1;
 335
 336         /*
 337          * Decide on what work routines to call based on the inode size.
 338          */
 339         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 340                 newsize = XFS_DIR_SF_ENTSIZE_BYNAME(args.namelen);
 341                 if ((dp->i_d.di_size + newsize) <= XFS_IFORK_DSIZE(dp))
 342                         retval = 0;
 343                 else
 344                         retval = XFS_ERROR(ENOSPC);
 345         } else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 346                 retval = xfs_dir_leaf_addname(&args);
 347         } else {
 348                 retval = xfs_dir_node_addname(&args);
 349         }
 350         return(retval);
 351 }
 352
 353 /*
 354  * Generic handler routine to remove a name from a directory.
 355  * Transitions directory from Btree to shortform as necessary.
 356  */
 357 static int                                                      /* error */
 358 xfs_dir_removename(xfs_trans_t *trans, xfs_inode_t *dp, char *name,
 359                    int namelen, xfs_ino_t ino, xfs_fsblock_t *firstblock,
 360                    xfs_bmap_free_t *flist, xfs_extlen_t total)
 361 {
 362         xfs_da_args_t args;
 363         int count, totallen, newsize, retval;
 364
 365         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 366         XFS_STATS_INC(xs_dir_remove);
 367         /*
 368          * Fill in the arg structure for this request.
 369          */
 370         args.name = name;
 371         args.namelen = namelen;
 372         args.hashval = xfs_da_hashname(name, namelen);
 373         args.inumber = ino;
 374         args.dp = dp;
 375         args.firstblock = firstblock;
 376         args.flist = flist;
 377         args.total = total;
 378         args.whichfork = XFS_DATA_FORK;
 379         args.trans = trans;
 380         args.justcheck = args.addname = args.oknoent = 0;
 381
 382         /*
 383          * Decide on what work routines to call based on the inode size.
 384          */
 385         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 386                 retval = xfs_dir_shortform_removename(&args);
 387         } else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 388                 retval = xfs_dir_leaf_removename(&args, &count, &totallen);
 389                 if (retval == 0) {
 390                         newsize = XFS_DIR_SF_ALLFIT(count, totallen);
 391                         if (newsize <= XFS_IFORK_DSIZE(dp)) {
 392                                 retval = xfs_dir_leaf_to_shortform(&args);
 393                         }
 394                 }
 395         } else {
 396                 retval = xfs_dir_node_removename(&args);
 397         }
 398         return(retval);
 399 }
 400
 401 static int                                                      /* error */
 402 xfs_dir_lookup(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen,
 403                                    xfs_ino_t *inum)
 404 {
 405         xfs_da_args_t args;
 406         int retval;
 407
 408         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 409
 410         XFS_STATS_INC(xs_dir_lookup);
 411         /*
 412          * Fill in the arg structure for this request.
 413          */
 414         args.name = name;
 415         args.namelen = namelen;
 416         args.hashval = xfs_da_hashname(name, namelen);
 417         args.inumber = 0;
 418         args.dp = dp;
 419         args.firstblock = NULL;
 420         args.flist = NULL;
 421         args.total = 0;
 422         args.whichfork = XFS_DATA_FORK;
 423         args.trans = trans;
 424         args.justcheck = args.addname = 0;
 425         args.oknoent = 1;
 426
 427         /*
 428          * Decide on what work routines to call based on the inode size.
 429          */
 430         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 431                 retval = xfs_dir_shortform_lookup(&args);
 432         } else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 433                 retval = xfs_dir_leaf_lookup(&args);
 434         } else {
 435                 retval = xfs_dir_node_lookup(&args);
 436         }
 437         if (retval == EEXIST)
 438                 retval = 0;
 439         *inum = args.inumber;
 440         return(retval);
 441 }
 442
 443 /*
 444  * Implement readdir.
 445  */
 446 static int                                                      /* error */
 447 xfs_dir_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio, int *eofp)
 448 {
 449         xfs_dirent_t *dbp;
 450         int  alignment, retval;
 451         xfs_dir_put_t put;
 452
 453         XFS_STATS_INC(xs_dir_getdents);
 454         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 455
 456         /*
 457          * If our caller has given us a single contiguous memory buffer,
 458          * just work directly within that buffer.  If it's in user memory,
 459          * lock it down first.
 460          */
 461         alignment = sizeof(xfs_off_t) - 1;
 462         if ((uio->uio_iovcnt == 1) &&
 463             (((__psint_t)uio->uio_iov[0].iov_base & alignment) == 0) &&
 464             ((uio->uio_iov[0].iov_len & alignment) == 0)) {
 465                 dbp = NULL;
 466                 put = xfs_dir_put_dirent64_direct;
 467         } else {
 468                 dbp = kmem_alloc(sizeof(*dbp) + MAXNAMELEN, KM_SLEEP);
 469                 put = xfs_dir_put_dirent64_uio;
 470         }
 471
 472         /*
 473          * Decide on what work routines to call based on the inode size.
 474          */
 475         *eofp = 0;
 476
 477         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 478                 retval = xfs_dir_shortform_getdents(dp, uio, eofp, dbp, put);
 479         } else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 480                 retval = xfs_dir_leaf_getdents(trans, dp, uio, eofp, dbp, put);
 481         } else {
 482                 retval = xfs_dir_node_getdents(trans, dp, uio, eofp, dbp, put);
 483         }
 484         if (dbp != NULL)
 485                 kmem_free(dbp, sizeof(*dbp) + MAXNAMELEN);
 486
 487         return(retval);
 488 }
 489
 490 static int                                                      /* error */
 491 xfs_dir_replace(xfs_trans_t *trans, xfs_inode_t *dp, char *name, int namelen,
 492                                     xfs_ino_t inum, xfs_fsblock_t *firstblock,
 493                                     xfs_bmap_free_t *flist, xfs_extlen_t total)
 494 {
 495         xfs_da_args_t args;
 496         int retval;
 497
 498         ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
 499
 500         if ((retval = xfs_dir_ino_validate(trans->t_mountp, inum)))
 501                 return retval;
 502
 503         /*
 504          * Fill in the arg structure for this request.
 505          */
 506         args.name = name;
 507         args.namelen = namelen;
 508         args.hashval = xfs_da_hashname(name, namelen);
 509         args.inumber = inum;
 510         args.dp = dp;
 511         args.firstblock = firstblock;
 512         args.flist = flist;
 513         args.total = total;
 514         args.whichfork = XFS_DATA_FORK;
 515         args.trans = trans;
 516         args.justcheck = args.addname = args.oknoent = 0;
 517
 518         /*
 519          * Decide on what work routines to call based on the inode size.
 520          */
 521         if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 522                 retval = xfs_dir_shortform_replace(&args);
 523         } else if (xfs_bmap_one_block(dp, XFS_DATA_FORK)) {
 524                 retval = xfs_dir_leaf_replace(&args);
 525         } else {
 526                 retval = xfs_dir_node_replace(&args);
 527         }
 528
 529         return(retval);
 530 }
 531
 532 static int
 533 xfs_dir_shortform_validate_ondisk(xfs_mount_t *mp, xfs_dinode_t *dp)
 534 {
 535         xfs_ino_t               ino;
 536         int                     namelen_sum;
 537         int                     count;
 538         xfs_dir_shortform_t     *sf;
 539         xfs_dir_sf_entry_t      *sfe;
 540         int                     i;
 541
 542
 543
 544         if ((INT_GET(dp->di_core.di_mode, ARCH_CONVERT) & S_IFMT) != S_IFDIR) {
 545                 return 0;
 546         }
 547         if (INT_GET(dp->di_core.di_format, ARCH_CONVERT) != XFS_DINODE_FMT_LOCAL) {
 548                 return 0;
 549         }
 550         if (INT_GET(dp->di_core.di_size, ARCH_CONVERT) < sizeof(sf->hdr)) {
 551                 xfs_fs_cmn_err(CE_WARN, mp, "Invalid shortform size: dp 0x%p",
 552                         dp);
 553                 return 1;
 554         }
 555         sf = (xfs_dir_shortform_t *)(&dp->di_u.di_dirsf);
 556         ino = XFS_GET_DIR_INO8(sf->hdr.parent);
 557         if (xfs_dir_ino_validate(mp, ino))
 558                 return 1;
 559
 560         count = sf->hdr.count;
 561         if ((count < 0) || ((count * 10) > XFS_LITINO(mp))) {
 562                 xfs_fs_cmn_err(CE_WARN, mp,
 563                         "Invalid shortform count: dp 0x%p", dp);
 564                 return(1);
 565         }
 566
 567         if (count == 0) {
 568                 return 0;
 569         }
 570
 571         namelen_sum = 0;
 572         sfe = &sf->list[0];
 573         for (i = sf->hdr.count - 1; i >= 0; i--) {
 574                 ino = XFS_GET_DIR_INO8(sfe->inumber);
 575                 xfs_dir_ino_validate(mp, ino);
 576                 if (sfe->namelen >= XFS_LITINO(mp)) {
 577                         xfs_fs_cmn_err(CE_WARN, mp,
 578                                 "Invalid shortform namelen: dp 0x%p", dp);
 579                         return 1;
 580                 }
 581                 namelen_sum += sfe->namelen;
 582                 sfe = XFS_DIR_SF_NEXTENTRY(sfe);
 583         }
 584         if (namelen_sum >= XFS_LITINO(mp)) {
 585                 xfs_fs_cmn_err(CE_WARN, mp,
 586                         "Invalid shortform namelen: dp 0x%p", dp);
 587                 return 1;
 588         }
 589
 590         return 0;
 591 }
 592
 593 /*========================================================================
 594  * External routines when dirsize == XFS_LBSIZE(dp->i_mount).
 595  *========================================================================*/
 596
 597 /*
 598  * Add a name to the leaf directory structure
 599  * This is the external routine.
 600  */
 601 int
 602 xfs_dir_leaf_addname(xfs_da_args_t *args)
 603 {
 604         int index, retval;
 605         xfs_dabuf_t *bp;
 606
 607         retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
 608                                               XFS_DATA_FORK);
 609         if (retval)
 610                 return(retval);
 611         ASSERT(bp != NULL);
 612
 613         retval = xfs_dir_leaf_lookup_int(bp, args, &index);
 614         if (retval == ENOENT)
 615                 retval = xfs_dir_leaf_add(bp, args, index);
 616         xfs_da_buf_done(bp);
 617         return(retval);
 618 }
 619
 620 /*
 621  * Remove a name from the leaf directory structure
 622  * This is the external routine.
 623  */
 624 STATIC int
 625 xfs_dir_leaf_removename(xfs_da_args_t *args, int *count, int *totallen)
 626 {
 627         xfs_dir_leafblock_t *leaf;
 628         int index, retval;
 629         xfs_dabuf_t *bp;
 630
 631         retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
 632                                               XFS_DATA_FORK);
 633         if (retval)
 634                 return(retval);
 635         ASSERT(bp != NULL);
 636         leaf = bp->data;
 637         ASSERT(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT) == XFS_DIR_LEAF_MAGIC);
 638         retval = xfs_dir_leaf_lookup_int(bp, args, &index);
 639         if (retval == EEXIST) {
 640                 (void)xfs_dir_leaf_remove(args->trans, bp, index);
 641                 *count = INT_GET(leaf->hdr.count, ARCH_CONVERT);
 642                 *totallen = INT_GET(leaf->hdr.namebytes, ARCH_CONVERT);
 643                 retval = 0;
 644         }
 645         xfs_da_buf_done(bp);
 646         return(retval);
 647 }
 648
 649 /*
 650  * Look up a name in a leaf directory structure.
 651  * This is the external routine.
 652  */
 653 STATIC int
 654 xfs_dir_leaf_lookup(xfs_da_args_t *args)
 655 {
 656         int index, retval;
 657         xfs_dabuf_t *bp;
 658
 659         retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
 660                                               XFS_DATA_FORK);
 661         if (retval)
 662                 return(retval);
 663         ASSERT(bp != NULL);
 664         retval = xfs_dir_leaf_lookup_int(bp, args, &index);
 665         xfs_da_brelse(args->trans, bp);
 666         return(retval);
 667 }
 668
 669 /*
 670  * Copy out directory entries for getdents(), for leaf directories.
 671  */
 672 STATIC int
 673 xfs_dir_leaf_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio,
 674                                   int *eofp, xfs_dirent_t *dbp, xfs_dir_put_t put)
 675 {
 676         xfs_dabuf_t *bp;
 677         int retval, eob;
 678
 679         retval = xfs_da_read_buf(dp->i_transp, dp, 0, -1, &bp, XFS_DATA_FORK);
 680         if (retval)
 681                 return(retval);
 682         ASSERT(bp != NULL);
 683         retval = xfs_dir_leaf_getdents_int(bp, dp, 0, uio, &eob, dbp, put, -1);
 684         xfs_da_brelse(trans, bp);
 685         *eofp = (eob == 0);
 686         return(retval);
 687 }
 688
 689 /*
 690  * Look up a name in a leaf directory structure, replace the inode number.
 691  * This is the external routine.
 692  */
 693 STATIC int
 694 xfs_dir_leaf_replace(xfs_da_args_t *args)
 695 {
 696         int index, retval;
 697         xfs_dabuf_t *bp;
 698         xfs_ino_t inum;
 699         xfs_dir_leafblock_t *leaf;
 700         xfs_dir_leaf_entry_t *entry;
 701         xfs_dir_leaf_name_t *namest;
 702
 703         inum = args->inumber;
 704         retval = xfs_da_read_buf(args->trans, args->dp, 0, -1, &bp,
 705                                               XFS_DATA_FORK);
 706         if (retval)
 707                 return(retval);
 708         ASSERT(bp != NULL);
 709         retval = xfs_dir_leaf_lookup_int(bp, args, &index);
 710         if (retval == EEXIST) {
 711                 leaf = bp->data;
 712                 entry = &leaf->entries[index];
 713                 namest = XFS_DIR_LEAF_NAMESTRUCT(leaf, INT_GET(entry->nameidx, ARCH_CONVERT));
 714                 /* XXX - replace assert? */
 715                 XFS_DIR_SF_PUT_DIRINO(&inum, &namest->inumber);
 716                 xfs_da_log_buf(args->trans, bp,
 717                     XFS_DA_LOGRANGE(leaf, namest, sizeof(namest->inumber)));
 718                 xfs_da_buf_done(bp);
 719                 retval = 0;
 720         } else
 721                 xfs_da_brelse(args->trans, bp);
 722         return(retval);
 723 }
 724
 725
 726 /*========================================================================
 727  * External routines when dirsize > XFS_LBSIZE(mp).
 728  *========================================================================*/
 729
 730 /*
 731  * Add a name to a Btree-format directory.
 732  *
 733  * This will involve walking down the Btree, and may involve splitting
 734  * leaf nodes and even splitting intermediate nodes up to and including
 735  * the root node (a special case of an intermediate node).
 736  */
 737 STATIC int
 738 xfs_dir_node_addname(xfs_da_args_t *args)
 739 {
 740         xfs_da_state_t *state;
 741         xfs_da_state_blk_t *blk;
 742         int retval, error;
 743
 744         /*
 745          * Fill in bucket of arguments/results/context to carry around.
 746          */
 747         state = xfs_da_state_alloc();
 748         state->args = args;
 749         state->mp = args->dp->i_mount;
 750         state->blocksize = state->mp->m_sb.sb_blocksize;
 751         state->node_ents = state->mp->m_dir_node_ents;
 752
 753         /*
 754          * Search to see if name already exists, and get back a pointer
 755          * to where it should go.
 756          */
 757         error = xfs_da_node_lookup_int(state, &retval);
 758         if (error)
 759                 retval = error;
 760         if (retval != ENOENT)
 761                 goto error;
 762         blk = &state->path.blk[ state->path.active-1 ];
 763         ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
 764         retval = xfs_dir_leaf_add(blk->bp, args, blk->index);
 765         if (retval == 0) {
 766                 /*
 767                  * Addition succeeded, update Btree hashvals.
 768                  */
 769                 if (!args->justcheck)
 770                         xfs_da_fixhashpath(state, &state->path);
 771         } else {
 772                 /*
 773                  * Addition failed, split as many Btree elements as required.
 774                  */
 775                 if (args->total == 0) {
 776                         ASSERT(retval == ENOSPC);
 777                         goto error;
 778                 }
 779                 retval = xfs_da_split(state);
 780         }
 781 error:
 782         xfs_da_state_free(state);
 783
 784         return(retval);
 785 }
 786
 787 /*
 788  * Remove a name from a B-tree directory.
 789  *
 790  * This will involve walking down the Btree, and may involve joining
 791  * leaf nodes and even joining intermediate nodes up to and including
 792  * the root node (a special case of an intermediate node).
 793  */
 794 STATIC int
 795 xfs_dir_node_removename(xfs_da_args_t *args)
 796 {
 797         xfs_da_state_t *state;
 798         xfs_da_state_blk_t *blk;
 799         int retval, error;
 800
 801         state = xfs_da_state_alloc();
 802         state->args = args;
 803         state->mp = args->dp->i_mount;
 804         state->blocksize = state->mp->m_sb.sb_blocksize;
 805         state->node_ents = state->mp->m_dir_node_ents;
 806
 807         /*
 808          * Search to see if name exists, and get back a pointer to it.
 809          */
 810         error = xfs_da_node_lookup_int(state, &retval);
 811         if (error)
 812                 retval = error;
 813         if (retval != EEXIST) {
 814                 xfs_da_state_free(state);
 815                 return(retval);
 816         }
 817
 818         /*
 819          * Remove the name and update the hashvals in the tree.
 820          */
 821         blk = &state->path.blk[ state->path.active-1 ];
 822         ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
 823         retval = xfs_dir_leaf_remove(args->trans, blk->bp, blk->index);
 824         xfs_da_fixhashpath(state, &state->path);
 825
 826         /*
 827          * Check to see if the tree needs to be collapsed.
 828          */
 829         error = 0;
 830         if (retval) {
 831                 error = xfs_da_join(state);
 832         }
 833
 834         xfs_da_state_free(state);
 835         if (error)
 836                 return(error);
 837         return(0);
 838 }
 839
 840 /*
 841  * Look up a filename in a int directory.
 842  * Use an internal routine to actually do all the work.
 843  */
 844 STATIC int
 845 xfs_dir_node_lookup(xfs_da_args_t *args)
 846 {
 847         xfs_da_state_t *state;
 848         int retval, error, i;
 849
 850         state = xfs_da_state_alloc();
 851         state->args = args;
 852         state->mp = args->dp->i_mount;
 853         state->blocksize = state->mp->m_sb.sb_blocksize;
 854         state->node_ents = state->mp->m_dir_node_ents;
 855
 856         /*
 857          * Search to see if name exists,
 858          * and get back a pointer to it.
 859          */
 860         error = xfs_da_node_lookup_int(state, &retval);
 861         if (error) {
 862                 retval = error;
 863         }
 864
 865         /*
 866          * If not in a transaction, we have to release all the buffers.
 867          */
 868         for (i = 0; i < state->path.active; i++) {
 869                 xfs_da_brelse(args->trans, state->path.blk[i].bp);
 870                 state->path.blk[i].bp = NULL;
 871         }
 872
 873         xfs_da_state_free(state);
 874         return(retval);
 875 }
 876
 877 STATIC int
 878 xfs_dir_node_getdents(xfs_trans_t *trans, xfs_inode_t *dp, uio_t *uio,
 879                                   int *eofp, xfs_dirent_t *dbp, xfs_dir_put_t put)
 880 {
 881         xfs_da_intnode_t *node;
 882         xfs_da_node_entry_t *btree;
 883         xfs_dir_leafblock_t *leaf = NULL;
 884         xfs_dablk_t bno, nextbno;
 885         xfs_dahash_t cookhash;
 886         xfs_mount_t *mp;
 887         int error, eob, i;
 888         xfs_dabuf_t *bp;
 889         xfs_daddr_t nextda;
 890
 891         /*
 892          * Pick up our context.
 893          */
 894         mp = dp->i_mount;
 895         bp = NULL;
 896         bno = XFS_DA_COOKIE_BNO(mp, uio->uio_offset);
 897         cookhash = XFS_DA_COOKIE_HASH(mp, uio->uio_offset);
 898
 899         xfs_dir_trace_g_du("node: start", dp, uio);
 900
 901         /*
 902          * Re-find our place, even if we're confused about what our place is.
 903          *
 904          * First we check the block number from the magic cookie, it is a
 905          * cache of where we ended last time.  If we find a leaf block, and
 906          * the starting hashval in that block is less than our desired
 907          * hashval, then we run with it.
 908          */
 909         if (bno > 0) {
 910                 error = xfs_da_read_buf(trans, dp, bno, -2, &bp, XFS_DATA_FORK);
 911                 if ((error != 0) && (error != EFSCORRUPTED))
 912                         return(error);
 913                 if (bp)
 914                         leaf = bp->data;
 915                 if (bp && INT_GET(leaf->hdr.info.magic, ARCH_CONVERT) != XFS_DIR_LEAF_MAGIC) {
 916                         xfs_dir_trace_g_dub("node: block not a leaf",
 917                                                    dp, uio, bno);
 918                         xfs_da_brelse(trans, bp);
 919                         bp = NULL;
 920                 }
 921                 if (bp && INT_GET(leaf->entries[0].hashval, ARCH_CONVERT) > cookhash) {
 922                         xfs_dir_trace_g_dub("node: leaf hash too large",
 923                                                    dp, uio, bno);
 924                         xfs_da_brelse(trans, bp);
 925                         bp = NULL;
 926                 }
 927                 if (bp &&
 928                     cookhash > INT_GET(leaf->entries[INT_GET(leaf->hdr.count, ARCH_CONVERT) - 1].hashval, ARCH_CONVERT)) {
 929                         xfs_dir_trace_g_dub("node: leaf hash too small",
 930                                                    dp, uio, bno);
 931                         xfs_da_brelse(trans, bp);
 932                         bp = NULL;
 933                 }
 934         }
 935
 936         /*
 937          * If we did not find a leaf block from the blockno in the cookie,
 938          * or we there was no blockno in the cookie (eg: first time thru),
 939          * the we start at the top of the Btree and re-find our hashval.
 940          */
 941         if (bp == NULL) {
 942                 xfs_dir_trace_g_du("node: start at root" , dp, uio);
 943                 bno = 0;
 944                 for (;;) {
 945                         error = xfs_da_read_buf(trans, dp, bno, -1, &bp,
 946                                                        XFS_DATA_FORK);
 947                         if (error)
 948                                 return(error);
 949                         if (bp == NULL)
 950                                 return(XFS_ERROR(EFSCORRUPTED));
 951                         node = bp->data;
 952                         if (INT_GET(node->hdr.info.magic, ARCH_CONVERT) != XFS_DA_NODE_MAGIC)
 953                                 break;
 954                         btree = &node->btree[0];
 955                         xfs_dir_trace_g_dun("node: node detail", dp, uio, node);
 956                         for (i = 0; i < INT_GET(node->hdr.count, ARCH_CONVERT); btree++, i++) {
 957                                 if (INT_GET(btree->hashval, ARCH_CONVERT) >= cookhash) {
 958                                         bno = INT_GET(btree->before, ARCH_CONVERT);
 959                                         break;
 960                                 }
 961                         }
 962                         if (i == INT_GET(node->hdr.count, ARCH_CONVERT)) {
 963                                 xfs_da_brelse(trans, bp);
 964                                 xfs_dir_trace_g_du("node: hash beyond EOF",
 965                                                           dp, uio);
 966                                 uio->uio_offset = XFS_DA_MAKE_COOKIE(mp, 0, 0,
 967                                                              XFS_DA_MAXHASH);
 968                                 *eofp = 1;
 969                                 return(0);
 970                         }
 971                         xfs_dir_trace_g_dub("node: going to block",
 972                                                    dp, uio, bno);
 973                         xfs_da_brelse(trans, bp);
 974                 }
 975         }
 976         ASSERT(cookhash != XFS_DA_MAXHASH);
 977
 978         /*
 979          * We've dropped down to the (first) leaf block that contains the
 980          * hashval we are interested in.  Continue rolling upward thru the
 981          * leaf blocks until we fill up our buffer.
 982          */
 983         for (;;) {
 984                 leaf = bp->data;
 985                 if (unlikely(INT_GET(leaf->hdr.info.magic, ARCH_CONVERT) != XFS_DIR_LEAF_MAGIC)) {
 986                         xfs_dir_trace_g_dul("node: not a leaf", dp, uio, leaf);
 987                         xfs_da_brelse(trans, bp);
 988                         XFS_CORRUPTION_ERROR("xfs_dir_node_getdents(1)",
 989                                              XFS_ERRLEVEL_LOW, mp, leaf);
 990                         return XFS_ERROR(EFSCORRUPTED);
 991                 }
 992                 xfs_dir_trace_g_dul("node: leaf detail", dp, uio, leaf);
 993                 if ((nextbno = INT_GET(leaf->hdr.info.forw, ARCH_CONVERT))) {
 994                         nextda = xfs_da_reada_buf(trans, dp, nextbno,
 995                                                   XFS_DATA_FORK);
 996                 } else
 997                         nextda = -1;
 998                 error = xfs_dir_leaf_getdents_int(bp, dp, bno, uio, &eob, dbp,
 999                                                   put, nextda);
1000                 xfs_da_brelse(trans, bp);
1001                 bno = nextbno;
1002                 if (eob) {
1003                         xfs_dir_trace_g_dub("node: E-O-B", dp, uio, bno);
1004                         *eofp = 0;
1005                         return(error);
1006                 }
1007                 if (bno == 0)
1008                         break;
1009                 error = xfs_da_read_buf(trans, dp, bno, nextda, &bp,
1010                                         XFS_DATA_FORK);
1011                 if (error)
1012                         return(error);
1013                 if (unlikely(bp == NULL)) {
1014                         XFS_ERROR_REPORT("xfs_dir_node_getdents(2)",
1015                                          XFS_ERRLEVEL_LOW, mp);
1016                         return(XFS_ERROR(EFSCORRUPTED));
1017                 }
1018         }
1019         *eofp = 1;
1020         xfs_dir_trace_g_du("node: E-O-F", dp, uio);
1021         return(0);
1022 }
1023
1024 /*
1025  * Look up a filename in an int directory, replace the inode number.
1026  * Use an internal routine to actually do the lookup.
1027  */
1028 STATIC int
1029 xfs_dir_node_replace(xfs_da_args_t *args)
1030 {
1031         xfs_da_state_t *state;
1032         xfs_da_state_blk_t *blk;
1033         xfs_dir_leafblock_t *leaf;
1034         xfs_dir_leaf_entry_t *entry;
1035         xfs_dir_leaf_name_t *namest;
1036         xfs_ino_t inum;
1037         int retval, error, i;
1038         xfs_dabuf_t *bp;
1039
1040         state = xfs_da_state_alloc();
1041         state->args = args;
1042         state->mp = args->dp->i_mount;
1043         state->blocksize = state->mp->m_sb.sb_blocksize;
1044         state->node_ents = state->mp->m_dir_node_ents;
1045         inum = args->inumber;
1046
1047         /*
1048          * Search to see if name exists,
1049          * and get back a pointer to it.
1050          */
1051         error = xfs_da_node_lookup_int(state, &retval);
1052         if (error) {
1053                 retval = error;
1054         }
1055
1056         if (retval == EEXIST) {
1057                 blk = &state->path.blk[state->path.active - 1];
1058                 ASSERT(blk->magic == XFS_DIR_LEAF_MAGIC);
1059                 bp = blk->bp;
1060                 leaf = bp->data;
1061                 entry = &leaf->entries[blk->index];
1062                 namest = XFS_DIR_LEAF_NAMESTRUCT(leaf, INT_GET(entry->nameidx, ARCH_CONVERT));
1063                 /* XXX - replace assert ? */
1064                 XFS_DIR_SF_PUT_DIRINO(&inum, &namest->inumber);
1065                 xfs_da_log_buf(args->trans, bp,
1066                     XFS_DA_LOGRANGE(leaf, namest, sizeof(namest->inumber)));
1067                 xfs_da_buf_done(bp);
1068                 blk->bp = NULL;
1069                 retval = 0;
1070         } else {
1071                 i = state->path.active - 1;
1072                 xfs_da_brelse(args->trans, state->path.blk[i].bp);
1073                 state->path.blk[i].bp = NULL;
1074         }
1075         for (i = 0; i < state->path.active - 1; i++) {
1076                 xfs_da_brelse(args->trans, state->path.blk[i].bp);
1077                 state->path.blk[i].bp = NULL;
1078         }
1079
1080         xfs_da_state_free(state);
1081         return(retval);
1082 }
1083
1084 #if defined(XFS_DIR_TRACE)
1085 /*
1086  * Add a trace buffer entry for an inode and a uio.
1087  */
1088 void
1089 xfs_dir_trace_g_du(char *where, xfs_inode_t *dp, uio_t *uio)
1090 {
1091         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DU, where,
1092                      (void *)dp, (void *)dp->i_mount,
1093                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1094                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1095                      (void *)(unsigned long)uio->uio_resid,
1096                      NULL, NULL, NULL, NULL, NULL, NULL, NULL);
1097 }
1098
1099 /*
1100  * Add a trace buffer entry for an inode and a uio.
1101  */
1102 void
1103 xfs_dir_trace_g_dub(char *where, xfs_inode_t *dp, uio_t *uio, xfs_dablk_t bno)
1104 {
1105         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUB, where,
1106                      (void *)dp, (void *)dp->i_mount,
1107                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1108                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1109                      (void *)(unsigned long)uio->uio_resid,
1110                      (void *)(unsigned long)bno,
1111                      NULL, NULL, NULL, NULL, NULL, NULL);
1112 }
1113
1114 /*
1115  * Add a trace buffer entry for an inode and a uio.
1116  */
1117 void
1118 xfs_dir_trace_g_dun(char *where, xfs_inode_t *dp, uio_t *uio,
1119                         xfs_da_intnode_t *node)
1120 {
1121         int     last = INT_GET(node->hdr.count, ARCH_CONVERT) - 1;
1122
1123         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUN, where,
1124                      (void *)dp, (void *)dp->i_mount,
1125                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1126                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1127                      (void *)(unsigned long)uio->uio_resid,
1128                      (void *)(unsigned long)
1129                         INT_GET(node->hdr.info.forw, ARCH_CONVERT),
1130                      (void *)(unsigned long)
1131                         INT_GET(node->hdr.count, ARCH_CONVERT),
1132                      (void *)(unsigned long)
1133                         INT_GET(node->btree[0].hashval, ARCH_CONVERT),
1134                      (void *)(unsigned long)
1135                         INT_GET(node->btree[last].hashval, ARCH_CONVERT),
1136                      NULL, NULL, NULL);
1137 }
1138
1139 /*
1140  * Add a trace buffer entry for an inode and a uio.
1141  */
1142 void
1143 xfs_dir_trace_g_dul(char *where, xfs_inode_t *dp, uio_t *uio,
1144                         xfs_dir_leafblock_t *leaf)
1145 {
1146         int     last = INT_GET(leaf->hdr.count, ARCH_CONVERT) - 1;
1147
1148         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUL, where,
1149                      (void *)dp, (void *)dp->i_mount,
1150                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1151                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1152                      (void *)(unsigned long)uio->uio_resid,
1153                      (void *)(unsigned long)
1154                         INT_GET(leaf->hdr.info.forw, ARCH_CONVERT),
1155                      (void *)(unsigned long)
1156                         INT_GET(leaf->hdr.count, ARCH_CONVERT),
1157                      (void *)(unsigned long)
1158                         INT_GET(leaf->entries[0].hashval, ARCH_CONVERT),
1159                      (void *)(unsigned long)
1160                         INT_GET(leaf->entries[last].hashval, ARCH_CONVERT),
1161                      NULL, NULL, NULL);
1162 }
1163
1164 /*
1165  * Add a trace buffer entry for an inode and a uio.
1166  */
1167 void
1168 xfs_dir_trace_g_due(char *where, xfs_inode_t *dp, uio_t *uio,
1169                         xfs_dir_leaf_entry_t *entry)
1170 {
1171         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUE, where,
1172                      (void *)dp, (void *)dp->i_mount,
1173                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1174                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1175                      (void *)(unsigned long)uio->uio_resid,
1176                      (void *)(unsigned long)
1177                         INT_GET(entry->hashval, ARCH_CONVERT),
1178                      NULL, NULL, NULL, NULL, NULL, NULL);
1179 }
1180
1181 /*
1182  * Add a trace buffer entry for an inode and a uio.
1183  */
1184 void
1185 xfs_dir_trace_g_duc(char *where, xfs_inode_t *dp, uio_t *uio, xfs_off_t cookie)
1186 {
1187         xfs_dir_trace_enter(XFS_DIR_KTRACE_G_DUC, where,
1188                      (void *)dp, (void *)dp->i_mount,
1189                      (void *)((unsigned long)(uio->uio_offset >> 32)),
1190                      (void *)((unsigned long)(uio->uio_offset & 0xFFFFFFFF)),
1191                      (void *)(unsigned long)uio->uio_resid,
1192                      (void *)((unsigned long)(cookie >> 32)),
1193                      (void *)((unsigned long)(cookie & 0xFFFFFFFF)),
1194                      NULL, NULL, NULL, NULL, NULL);
1195 }
1196
1197 /*
1198  * Add a trace buffer entry for the arguments given to the routine,
1199  * generic form.
1200  */
1201 void
1202 xfs_dir_trace_enter(int type, char *where,
1203                         void * a0, void * a1,
1204                         void * a2, void * a3,
1205                         void * a4, void * a5,
1206                         void * a6, void * a7,
1207                         void * a8, void * a9,
1208                         void * a10, void * a11)
1209 {
1210         ASSERT(xfs_dir_trace_buf);
1211         ktrace_enter(xfs_dir_trace_buf, (void *)(unsigned long)type,
1212                                         (void *)where,
1213                                         (void *)a0, (void *)a1, (void *)a2,
1214                                         (void *)a3, (void *)a4, (void *)a5,
1215                                         (void *)a6, (void *)a7, (void *)a8,
1216                                         (void *)a9, (void *)a10, (void *)a11,
1217                                         NULL, NULL);
1218 }
1219 #endif  /* XFS_DIR_TRACE */