lustre/liblustre/super.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Lustre Light Super operations
   5  *
   6  *  Copyright (c) 2002-2004 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of Lustre, http://www.lustre.org.
   9  *
  10  *   Lustre is free software; you can redistribute it and/or
  11  *   modify it under the terms of version 2 of the GNU General Public
  12  *   License as published by the Free Software Foundation.
  13  *
  14  *   Lustre is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with Lustre; if not, write to the Free Software
  21  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #define DEBUG_SUBSYSTEM S_LLITE
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <assert.h>
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <fcntl.h>
  33 #include <sys/queue.h>
  34 #ifndef __CYGWIN__
  35 # include <sys/statvfs.h>
  36 #else
  37 # include <sys/statfs.h>
  38 #endif
  39
  40 #include <sysio.h>
  41 #ifdef HAVE_XTIO_H
  42 #include <xtio.h>
  43 #endif
  44 #include <fs.h>
  45 #include <mount.h>
  46 #include <inode.h>
  47 #ifdef HAVE_FILE_H
  48 #include <file.h>
  49 #endif
  50
  51 #undef LIST_HEAD
  52
  53 #include "llite_lib.h"
  54
  55 #ifndef MAY_EXEC
  56 #define MAY_EXEC        1
  57 #define MAY_WRITE       2
  58 #define MAY_READ        4
  59 #endif
  60
  61 #define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
  62
  63 static int ll_permission(struct inode *inode, int mask)
  64 {
  65         struct intnl_stat *st = llu_i2stat(inode);
  66         mode_t mode = st->st_mode;
  67
  68         if (current->fsuid == st->st_uid)
  69                 mode >>= 6;
  70         else if (in_group_p(st->st_gid))
  71                 mode >>= 3;
  72
  73         if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
  74                 return 0;
  75
  76         if ((mask & (MAY_READ|MAY_WRITE)) ||
  77             (st->st_mode & S_IXUGO))
  78                 if (capable(CAP_DAC_OVERRIDE))
  79                         return 0;
  80
  81         if (mask == MAY_READ ||
  82             (S_ISDIR(st->st_mode) && !(mask & MAY_WRITE))) {
  83                 if (capable(CAP_DAC_READ_SEARCH))
  84                         return 0;
  85         }
  86
  87         return -EACCES;
  88 }
  89
  90 static void llu_fsop_gone(struct filesys *fs)
  91 {
  92         struct llu_sb_info *sbi = (struct llu_sb_info *) fs->fs_private;
  93         struct obd_device *obd = class_exp2obd(sbi->ll_md_exp);
  94         int next = 0;
  95         ENTRY;
  96
  97         list_del(&sbi->ll_conn_chain);
  98         obd_disconnect(sbi->ll_dt_exp);
  99         obd_disconnect(sbi->ll_md_exp);
 100
 101         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 102                 class_manual_cleanup(obd);
 103
 104         OBD_FREE(sbi, sizeof(*sbi));
 105
 106         liblustre_wait_idle();
 107         EXIT;
 108 }
 109
 110 static struct inode_ops llu_inode_ops;
 111
 112 static ldlm_mode_t llu_take_md_lock(struct inode *inode, __u64 bits,
 113                                     struct lustre_handle *lockh)
 114 {
 115         ldlm_policy_data_t policy = { .l_inodebits = {bits}};
 116         struct lu_fid *fid;
 117         ldlm_mode_t rc;
 118         int flags;
 119         ENTRY;
 120
 121         fid = &llu_i2info(inode)->lli_fid;
 122         CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
 123
 124         flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
 125         rc = md_lock_match(llu_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
 126                            LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
 127         RETURN(rc);
 128 }
 129
 130 void llu_update_inode(struct inode *inode, struct mdt_body *body,
 131                       struct lov_stripe_md *lsm)
 132 {
 133         struct llu_inode_info *lli = llu_i2info(inode);
 134         struct intnl_stat *st = llu_i2stat(inode);
 135
 136         LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
 137         if (lsm != NULL) {
 138                 if (lli->lli_smd == NULL) {
 139                         lli->lli_smd = lsm;
 140                         lli->lli_maxbytes = lsm->lsm_maxbytes;
 141                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
 142                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 143                 } else {
 144                         if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
 145                                 CERROR("lsm mismatch for inode %lld\n",
 146                                        (long long)st->st_ino);
 147                                 LBUG();
 148                         }
 149                 }
 150         }
 151
 152         if (body->valid & OBD_MD_FLMTIME &&
 153             body->mtime > LTIME_S(st->st_mtime))
 154                 LTIME_S(st->st_mtime) = body->mtime;
 155         if (body->valid & OBD_MD_FLATIME &&
 156             body->atime > LTIME_S(st->st_atime))
 157                 LTIME_S(st->st_atime) = body->atime;
 158
 159         /* mtime is always updated with ctime, but can be set in past.
 160            As write and utime(2) may happen within 1 second, and utime's
 161            mtime has a priority over write's one, so take mtime from mds
 162            for the same ctimes. */
 163         if (body->valid & OBD_MD_FLCTIME &&
 164             body->ctime >= LTIME_S(st->st_ctime)) {
 165                 LTIME_S(st->st_ctime) = body->ctime;
 166                 if (body->valid & OBD_MD_FLMTIME)
 167                         LTIME_S(st->st_mtime) = body->mtime;
 168         }
 169         if (body->valid & OBD_MD_FLMODE)
 170                 st->st_mode = (st->st_mode & S_IFMT)|(body->mode & ~S_IFMT);
 171         if (body->valid & OBD_MD_FLTYPE)
 172                 st->st_mode = (st->st_mode & ~S_IFMT)|(body->mode & S_IFMT);
 173         if (S_ISREG(st->st_mode))
 174                 st->st_blksize = min(2UL * PTLRPC_MAX_BRW_SIZE, LL_MAX_BLKSIZE);
 175         else
 176                 st->st_blksize = 4096;
 177         if (body->valid & OBD_MD_FLUID)
 178                 st->st_uid = body->uid;
 179         if (body->valid & OBD_MD_FLGID)
 180                 st->st_gid = body->gid;
 181         if (body->valid & OBD_MD_FLNLINK)
 182                 st->st_nlink = body->nlink;
 183         if (body->valid & OBD_MD_FLRDEV)
 184                 st->st_rdev = body->rdev;
 185         if (body->valid & OBD_MD_FLFLAGS)
 186                 lli->lli_st_flags = body->flags;
 187         if (body->valid & OBD_MD_FLSIZE) {
 188                 if ((llu_i2sbi(inode)->ll_lco.lco_flags & OBD_CONNECT_SOM) &&
 189                     S_ISREG(st->st_mode) && lli->lli_smd) {
 190                         struct lustre_handle lockh;
 191                         ldlm_mode_t mode;
 192
 193                         /* As it is possible a blocking ast has been processed
 194                          * by this time, we need to check there is an UPDATE
 195                          * lock on the client and set LLIF_MDS_SIZE_LOCK holding
 196                          * it. */
 197                         mode = llu_take_md_lock(inode, MDS_INODELOCK_UPDATE,
 198                                                 &lockh);
 199                         if (mode) {
 200                                 st->st_size = body->size;
 201                                 lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
 202                                 ldlm_lock_decref(&lockh, mode);
 203                         }
 204                 } else {
 205                     st->st_size = body->size;
 206                 }
 207
 208                 if (body->valid & OBD_MD_FLBLOCKS)
 209                         st->st_blocks = body->blocks;
 210         }
 211 }
 212
 213 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
 214 {
 215         struct llu_inode_info *lli = llu_i2info(dst);
 216         struct intnl_stat *st = llu_i2stat(dst);
 217
 218         valid &= src->o_valid;
 219
 220         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
 221                 CDEBUG(D_INODE,"valid "LPX64", cur time %lu/%lu, new %lu/%lu\n",
 222                        src->o_valid,
 223                        LTIME_S(st->st_mtime), LTIME_S(st->st_ctime),
 224                        (long)src->o_mtime, (long)src->o_ctime);
 225
 226         if (valid & OBD_MD_FLATIME)
 227                 LTIME_S(st->st_atime) = src->o_atime;
 228         if (valid & OBD_MD_FLMTIME)
 229                 LTIME_S(st->st_mtime) = src->o_mtime;
 230         if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(st->st_ctime))
 231                 LTIME_S(st->st_ctime) = src->o_ctime;
 232         if (valid & OBD_MD_FLSIZE)
 233                 st->st_size = src->o_size;
 234         if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
 235                 st->st_blocks = src->o_blocks;
 236         if (valid & OBD_MD_FLBLKSZ)
 237                 st->st_blksize = src->o_blksize;
 238         if (valid & OBD_MD_FLTYPE)
 239                 st->st_mode = (st->st_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
 240         if (valid & OBD_MD_FLMODE)
 241                 st->st_mode = (st->st_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
 242         if (valid & OBD_MD_FLUID)
 243                 st->st_uid = src->o_uid;
 244         if (valid & OBD_MD_FLGID)
 245                 st->st_gid = src->o_gid;
 246         if (valid & OBD_MD_FLFLAGS)
 247                 lli->lli_st_flags = src->o_flags;
 248 }
 249
 250 #define S_IRWXUGO       (S_IRWXU|S_IRWXG|S_IRWXO)
 251 #define S_IALLUGO       (S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
 252
 253 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid)
 254 {
 255         struct llu_inode_info *lli = llu_i2info(src);
 256         struct intnl_stat *st = llu_i2stat(src);
 257         obd_flag newvalid = 0;
 258
 259         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
 260                 CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
 261                        valid, LTIME_S(st->st_mtime),
 262                        LTIME_S(st->st_ctime));
 263
 264         if (valid & OBD_MD_FLATIME) {
 265                 dst->o_atime = LTIME_S(st->st_atime);
 266                 newvalid |= OBD_MD_FLATIME;
 267         }
 268         if (valid & OBD_MD_FLMTIME) {
 269                 dst->o_mtime = LTIME_S(st->st_mtime);
 270                 newvalid |= OBD_MD_FLMTIME;
 271         }
 272         if (valid & OBD_MD_FLCTIME) {
 273                 dst->o_ctime = LTIME_S(st->st_ctime);
 274                 newvalid |= OBD_MD_FLCTIME;
 275         }
 276         if (valid & OBD_MD_FLSIZE) {
 277                 dst->o_size = st->st_size;
 278                 newvalid |= OBD_MD_FLSIZE;
 279         }
 280         if (valid & OBD_MD_FLBLOCKS) {  /* allocation of space (x512 bytes) */
 281                 dst->o_blocks = st->st_blocks;
 282                 newvalid |= OBD_MD_FLBLOCKS;
 283         }
 284         if (valid & OBD_MD_FLBLKSZ) {   /* optimal block size */
 285                 dst->o_blksize = st->st_blksize;
 286                 newvalid |= OBD_MD_FLBLKSZ;
 287         }
 288         if (valid & OBD_MD_FLTYPE) {
 289                 dst->o_mode = (dst->o_mode & S_IALLUGO)|(st->st_mode & S_IFMT);
 290                 newvalid |= OBD_MD_FLTYPE;
 291         }
 292         if (valid & OBD_MD_FLMODE) {
 293                 dst->o_mode = (dst->o_mode & S_IFMT)|(st->st_mode & S_IALLUGO);
 294                 newvalid |= OBD_MD_FLMODE;
 295         }
 296         if (valid & OBD_MD_FLUID) {
 297                 dst->o_uid = st->st_uid;
 298                 newvalid |= OBD_MD_FLUID;
 299         }
 300         if (valid & OBD_MD_FLGID) {
 301                 dst->o_gid = st->st_gid;
 302                 newvalid |= OBD_MD_FLGID;
 303         }
 304         if (valid & OBD_MD_FLFLAGS) {
 305                 dst->o_flags = lli->lli_st_flags;
 306                 newvalid |= OBD_MD_FLFLAGS;
 307         }
 308         if (valid & OBD_MD_FLGENER) {
 309                 dst->o_generation = lli->lli_st_generation;
 310                 newvalid |= OBD_MD_FLGENER;
 311         }
 312         if (valid & OBD_MD_FLFID) {
 313                 dst->o_fid = st->st_ino;
 314                 newvalid |= OBD_MD_FLFID;
 315         }
 316
 317         dst->o_valid |= newvalid;
 318 }
 319
 320 /*
 321  * really does the getattr on the inode and updates its fields
 322  */
 323 int llu_inode_getattr(struct inode *inode, struct obdo *obdo)
 324 {
 325         struct llu_inode_info *lli = llu_i2info(inode);
 326         struct ptlrpc_request_set *set;
 327         struct lov_stripe_md *lsm = lli->lli_smd;
 328         struct obd_info oinfo = { { { 0 } } };
 329         int rc;
 330         ENTRY;
 331
 332         LASSERT(lsm);
 333
 334         oinfo.oi_md = lsm;
 335         oinfo.oi_oa = obdo;
 336         oinfo.oi_oa->o_id = lsm->lsm_object_id;
 337         oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
 338         oinfo.oi_oa->o_mode = S_IFREG;
 339         oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
 340                                OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
 341                                OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
 342                                OBD_MD_FLCTIME | OBD_MD_FLGROUP;
 343
 344         set = ptlrpc_prep_set();
 345         if (set == NULL) {
 346                 CERROR ("ENOMEM allocing request set\n");
 347                 rc = -ENOMEM;
 348         } else {
 349                 rc = obd_getattr_async(llu_i2obdexp(inode), &oinfo, set);
 350                 if (rc == 0)
 351                         rc = ptlrpc_set_wait(set);
 352                 ptlrpc_set_destroy(set);
 353         }
 354         if (rc)
 355                 RETURN(rc);
 356
 357         oinfo.oi_oa->o_valid = OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
 358                                OBD_MD_FLMTIME | OBD_MD_FLCTIME |
 359                                OBD_MD_FLSIZE;
 360
 361         obdo_refresh_inode(inode, oinfo.oi_oa, oinfo.oi_oa->o_valid);
 362         CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %Lu, "
 363                "blksize %Lu\n", lli->lli_smd->lsm_object_id,
 364                (long long unsigned)llu_i2stat(inode)->st_size,
 365                (long long unsigned)llu_i2stat(inode)->st_blocks,
 366                (long long unsigned)llu_i2stat(inode)->st_blksize);
 367         RETURN(0);
 368 }
 369
 370 static struct inode* llu_new_inode(struct filesys *fs,
 371                                    struct lu_fid *fid)
 372 {
 373         struct inode *inode;
 374         struct llu_inode_info *lli;
 375         struct intnl_stat st = {
 376                 .st_dev  = 0,
 377 #if 0
 378 #ifndef AUTOMOUNT_FILE_NAME
 379                 .st_mode = fid->f_type & S_IFMT,
 380 #else
 381                 .st_mode = fid->f_type /* all of the bits! */
 382 #endif
 383 #endif
 384                 /* FIXME: fix this later */
 385                 .st_mode = 0,
 386
 387                 .st_uid  = geteuid(),
 388                 .st_gid  = getegid(),
 389         };
 390
 391         OBD_ALLOC(lli, sizeof(*lli));
 392         if (!lli)
 393                 return NULL;
 394
 395         /* initialize lli here */
 396         lli->lli_sbi = llu_fs2sbi(fs);
 397         lli->lli_smd = NULL;
 398         lli->lli_symlink_name = NULL;
 399         lli->lli_flags = 0;
 400         lli->lli_maxbytes = (__u64)(~0UL);
 401         lli->lli_file_data = NULL;
 402
 403         lli->lli_sysio_fid.fid_data = &lli->lli_fid;
 404         lli->lli_sysio_fid.fid_len = sizeof(lli->lli_fid);
 405         lli->lli_fid = *fid;
 406
 407         /* file identifier is needed by functions like _sysio_i_find() */
 408         inode = _sysio_i_new(fs, &lli->lli_sysio_fid,
 409                              &st, 0, &llu_inode_ops, lli);
 410
 411         if (!inode)
 412                 OBD_FREE(lli, sizeof(*lli));
 413
 414         return inode;
 415 }
 416
 417 static int llu_have_md_lock(struct inode *inode, __u64 lockpart)
 418 {
 419         struct lustre_handle lockh;
 420         ldlm_policy_data_t policy = { .l_inodebits = { lockpart } };
 421         struct lu_fid *fid;
 422         int flags;
 423         ENTRY;
 424
 425         LASSERT(inode);
 426
 427         fid = &llu_i2info(inode)->lli_fid;
 428         CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
 429
 430         flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
 431         if (md_lock_match(llu_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
 432                           LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh)) {
 433                 RETURN(1);
 434         }
 435         RETURN(0);
 436 }
 437
 438 static int llu_inode_revalidate(struct inode *inode)
 439 {
 440         struct lov_stripe_md *lsm = NULL;
 441         ENTRY;
 442
 443         if (!inode) {
 444                 CERROR("REPORT THIS LINE TO PETER\n");
 445                 RETURN(0);
 446         }
 447
 448         if (!llu_have_md_lock(inode, MDS_INODELOCK_UPDATE)) {
 449                 struct lustre_md md;
 450                 struct ptlrpc_request *req = NULL;
 451                 struct llu_sb_info *sbi = llu_i2sbi(inode);
 452                 unsigned long valid = OBD_MD_FLGETATTR;
 453                 int rc, ealen = 0;
 454
 455                 /* Why don't we update all valid MDS fields here, if we're
 456                  * doing an RPC anyways?  -phil */
 457                 if (S_ISREG(llu_i2stat(inode)->st_mode)) {
 458                         ealen = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 459                         valid |= OBD_MD_FLEASIZE;
 460                 }
 461                 rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode),
 462                                 NULL, valid, ealen, &req);
 463                 if (rc) {
 464                         CERROR("failure %d inode %llu\n", rc,
 465                                (long long)llu_i2stat(inode)->st_ino);
 466                         RETURN(-abs(rc));
 467                 }
 468                 rc = md_get_lustre_md(sbi->ll_md_exp, req,
 469                                       sbi->ll_dt_exp, sbi->ll_md_exp, &md);
 470
 471                 /* XXX Too paranoid? */
 472                 if (((md.body->valid ^ valid) & OBD_MD_FLEASIZE) &&
 473                     !((md.body->valid & OBD_MD_FLNLINK) &&
 474                       (md.body->nlink == 0))) {
 475                         CERROR("Asked for %s eadata but got %s (%d)\n",
 476                                (valid & OBD_MD_FLEASIZE) ? "some" : "no",
 477                                (md.body->valid & OBD_MD_FLEASIZE) ? "some":"none",
 478                                 md.body->eadatasize);
 479                 }
 480                 if (rc) {
 481                         ptlrpc_req_finished(req);
 482                         RETURN(rc);
 483                 }
 484
 485
 486                 llu_update_inode(inode, md.body, md.lsm);
 487                 if (md.lsm != NULL && llu_i2info(inode)->lli_smd != md.lsm)
 488                         obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
 489                 ptlrpc_req_finished(req);
 490         }
 491
 492         lsm = llu_i2info(inode)->lli_smd;
 493         if (!lsm)       /* object not yet allocated, don't validate size */
 494                 RETURN(0);
 495
 496         /* ll_glimpse_size will prefer locally cached writes if they extend
 497          * the file */
 498         RETURN(llu_glimpse_size(inode));
 499 }
 500
 501 static void copy_stat_buf(struct inode *ino, struct intnl_stat *b)
 502 {
 503         *b = *llu_i2stat(ino);
 504 }
 505
 506 static int llu_iop_getattr(struct pnode *pno,
 507                            struct inode *ino,
 508                            struct intnl_stat *b)
 509 {
 510         int rc;
 511         ENTRY;
 512
 513         liblustre_wait_event(0);
 514
 515         if (!ino) {
 516                 LASSERT(pno);
 517                 LASSERT(pno->p_base->pb_ino);
 518                 ino = pno->p_base->pb_ino;
 519         } else {
 520                 LASSERT(!pno || pno->p_base->pb_ino == ino);
 521         }
 522
 523         /* libsysio might call us directly without intent lock,
 524          * we must re-fetch the attrs here
 525          */
 526         rc = llu_inode_revalidate(ino);
 527         if (!rc) {
 528                 copy_stat_buf(ino, b);
 529                 LASSERT(!llu_i2info(ino)->lli_it);
 530         }
 531
 532         liblustre_wait_event(0);
 533         RETURN(rc);
 534 }
 535
 536 static int null_if_equal(struct ldlm_lock *lock, void *data)
 537 {
 538         if (data == lock->l_ast_data) {
 539                 lock->l_ast_data = NULL;
 540
 541                 if (lock->l_req_mode != lock->l_granted_mode)
 542                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
 543         }
 544
 545         return LDLM_ITER_CONTINUE;
 546 }
 547
 548 void llu_clear_inode(struct inode *inode)
 549 {
 550         struct llu_inode_info *lli = llu_i2info(inode);
 551         struct llu_sb_info *sbi = llu_i2sbi(inode);
 552         ENTRY;
 553
 554         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu/%lu(%p)\n",
 555                (long long)llu_i2stat(inode)->st_ino, lli->lli_st_generation,
 556                inode);
 557
 558         lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
 559         md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
 560                          null_if_equal, inode);
 561
 562         if (lli->lli_smd)
 563                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
 564                                   null_if_equal, inode);
 565
 566         if (lli->lli_smd) {
 567                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
 568                 lli->lli_smd = NULL;
 569         }
 570
 571         if (lli->lli_symlink_name) {
 572                 OBD_FREE(lli->lli_symlink_name,
 573                          strlen(lli->lli_symlink_name) + 1);
 574                 lli->lli_symlink_name = NULL;
 575         }
 576
 577         EXIT;
 578 }
 579
 580 void llu_iop_gone(struct inode *inode)
 581 {
 582         struct llu_inode_info *lli = llu_i2info(inode);
 583         ENTRY;
 584
 585         liblustre_wait_event(0);
 586         llu_clear_inode(inode);
 587
 588         OBD_FREE(lli, sizeof(*lli));
 589         EXIT;
 590 }
 591
 592 static int inode_setattr(struct inode * inode, struct iattr * attr)
 593 {
 594         unsigned int ia_valid = attr->ia_valid;
 595         struct intnl_stat *st = llu_i2stat(inode);
 596         int error = 0;
 597
 598         /*
 599          * inode_setattr() is only ever invoked with ATTR_SIZE (by
 600          * llu_setattr_raw()) when file has no bodies. Check this.
 601          */
 602         LASSERT(ergo(ia_valid & ATTR_SIZE, llu_i2info(inode)->lli_smd == NULL));
 603
 604         if (ia_valid & ATTR_SIZE)
 605                 st->st_size = attr->ia_size;
 606         if (ia_valid & ATTR_UID)
 607                 st->st_uid = attr->ia_uid;
 608         if (ia_valid & ATTR_GID)
 609                 st->st_gid = attr->ia_gid;
 610         if (ia_valid & ATTR_ATIME)
 611                 st->st_atime = attr->ia_atime;
 612         if (ia_valid & ATTR_MTIME)
 613                 st->st_mtime = attr->ia_mtime;
 614         if (ia_valid & ATTR_CTIME)
 615                 st->st_ctime = attr->ia_ctime;
 616         if (ia_valid & ATTR_MODE) {
 617                 st->st_mode = attr->ia_mode;
 618                 if (!in_group_p(st->st_gid) && !capable(CAP_FSETID))
 619                         st->st_mode &= ~S_ISGID;
 620         }
 621         /* mark_inode_dirty(inode); */
 622         return error;
 623 }
 624
 625 int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
 626                    struct md_open_data **mod)
 627 {
 628         struct lustre_md md;
 629         struct llu_sb_info *sbi = llu_i2sbi(inode);
 630         struct ptlrpc_request *request = NULL;
 631         int rc;
 632         ENTRY;
 633
 634         llu_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0, LUSTRE_OPC_ANY);
 635         rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL,
 636                         0, &request, mod);
 637
 638         if (rc) {
 639                 ptlrpc_req_finished(request);
 640                 if (rc != -EPERM && rc != -EACCES)
 641                         CERROR("md_setattr fails: rc = %d\n", rc);
 642                 RETURN(rc);
 643         }
 644
 645         rc = md_get_lustre_md(sbi->ll_md_exp, request,
 646                               sbi->ll_dt_exp, sbi->ll_md_exp, &md);
 647         if (rc) {
 648                 ptlrpc_req_finished(request);
 649                 RETURN(rc);
 650         }
 651
 652         /* We call inode_setattr to adjust timestamps.
 653          * If there is at least some data in file, we cleared ATTR_SIZE
 654          * above to avoid invoking vmtruncate, otherwise it is important
 655          * to call vmtruncate in inode_setattr to update inode->i_size
 656          * (bug 6196) */
 657         inode_setattr(inode, &op_data->op_attr);
 658         llu_update_inode(inode, md.body, md.lsm);
 659         ptlrpc_req_finished(request);
 660
 661         RETURN(rc);
 662 }
 663
 664 /* Close IO epoch and send Size-on-MDS attribute update. */
 665 static int llu_setattr_done_writing(struct inode *inode,
 666                                     struct md_op_data *op_data,
 667                                     struct md_open_data *mod)
 668 {
 669         struct llu_inode_info *lli = llu_i2info(inode);
 670         struct intnl_stat *st = llu_i2stat(inode);
 671         int rc = 0;
 672         ENTRY;
 673
 674         LASSERT(op_data != NULL);
 675         if (!S_ISREG(st->st_mode))
 676                 RETURN(0);
 677
 678         /* XXX: pass och here for the recovery purpose. */
 679         CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
 680                op_data->op_ioepoch, PFID(&lli->lli_fid));
 681
 682         op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
 683         rc = md_done_writing(llu_i2sbi(inode)->ll_md_exp, op_data, mod);
 684         if (rc == -EAGAIN) {
 685                 /* MDS has instructed us to obtain Size-on-MDS attribute
 686                  * from OSTs and send setattr to back to MDS. */
 687                 rc = llu_sizeonmds_update(inode, mod, &op_data->op_handle,
 688                                           op_data->op_ioepoch);
 689         } else if (rc) {
 690                 CERROR("inode %llu mdc truncate failed: rc = %d\n",
 691                        st->st_ino, rc);
 692         }
 693         RETURN(rc);
 694 }
 695
 696 /* If this inode has objects allocated to it (lsm != NULL), then the OST
 697  * object(s) determine the file size and mtime.  Otherwise, the MDS will
 698  * keep these values until such a time that objects are allocated for it.
 699  * We do the MDS operations first, as it is checking permissions for us.
 700  * We don't to the MDS RPC if there is nothing that we want to store there,
 701  * otherwise there is no harm in updating mtime/atime on the MDS if we are
 702  * going to do an RPC anyways.
 703  *
 704  * If we are doing a truncate, we will send the mtime and ctime updates
 705  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
 706  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
 707  * at the same time.
 708  */
 709 int llu_setattr_raw(struct inode *inode, struct iattr *attr)
 710 {
 711         struct lov_stripe_md *lsm = llu_i2info(inode)->lli_smd;
 712         struct llu_sb_info *sbi = llu_i2sbi(inode);
 713         struct intnl_stat *st = llu_i2stat(inode);
 714         int ia_valid = attr->ia_valid;
 715         struct md_op_data op_data = { { 0 } };
 716         struct md_open_data *mod = NULL;
 717         int rc = 0, rc1 = 0;
 718         ENTRY;
 719
 720         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu\n", (long long)st->st_ino);
 721
 722         if (ia_valid & ATTR_SIZE) {
 723                 if (attr->ia_size > ll_file_maxbytes(inode)) {
 724                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
 725                                (long long)attr->ia_size,
 726                                ll_file_maxbytes(inode));
 727                         RETURN(-EFBIG);
 728                 }
 729
 730                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
 731         }
 732
 733         /* We mark all of the fields "set" so MDS/OST does not re-set them */
 734         if (attr->ia_valid & ATTR_CTIME) {
 735                 attr->ia_ctime = CURRENT_TIME;
 736                 attr->ia_valid |= ATTR_CTIME_SET;
 737         }
 738         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
 739                 attr->ia_atime = CURRENT_TIME;
 740                 attr->ia_valid |= ATTR_ATIME_SET;
 741         }
 742         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
 743                 attr->ia_mtime = CURRENT_TIME;
 744                 attr->ia_valid |= ATTR_MTIME_SET;
 745         }
 746         if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
 747                 /* To avoid stale mtime on mds, obtain it from ost and send
 748                    to mds. */
 749                 rc = llu_glimpse_size(inode);
 750                 if (rc)
 751                         RETURN(rc);
 752
 753                 attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
 754                 attr->ia_mtime = inode->i_stbuf.st_mtime;
 755         }
 756
 757         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
 758                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
 759                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
 760                        LTIME_S(CURRENT_TIME));
 761
 762         /* NB: ATTR_SIZE will only be set after this point if the size
 763          * resides on the MDS, ie, this file has no objects. */
 764         if (lsm)
 765                 attr->ia_valid &= ~ATTR_SIZE;
 766
 767         /* If only OST attributes being set on objects, don't do MDS RPC.
 768          * In that case, we need to check permissions and update the local
 769          * inode ourselves so we can call obdo_from_inode() always. */
 770         if (ia_valid & (lsm ? ~(ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
 771                 memcpy(&op_data.op_attr, attr, sizeof(*attr));
 772
 773                 /* Open epoch for truncate. */
 774                 if (ia_valid & ATTR_SIZE)
 775                         op_data.op_flags = MF_EPOCH_OPEN;
 776                 rc = llu_md_setattr(inode, &op_data, &mod);
 777                 if (rc)
 778                         RETURN(rc);
 779
 780                 if (op_data.op_ioepoch)
 781                         CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
 782                                "truncate\n", op_data.op_ioepoch,
 783                                PFID(&llu_i2info(inode)->lli_fid));
 784
 785                 if (!lsm || !S_ISREG(st->st_mode)) {
 786                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
 787                         GOTO(out, rc);
 788                 }
 789         } else {
 790                 /* The OST doesn't check permissions, but the alternative is
 791                  * a gratuitous RPC to the MDS.  We already rely on the client
 792                  * to do read/write/truncate permission checks, so is mtime OK?
 793                  */
 794                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
 795                         /* from sys_utime() */
 796                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
 797                                 if (current->fsuid != st->st_uid &&
 798                                     (rc = ll_permission(inode, MAY_WRITE)) != 0)
 799                                         RETURN(rc);
 800                         } else {
 801                                 /* from inode_change_ok() */
 802                                 if (current->fsuid != st->st_uid &&
 803                                     !capable(CAP_FOWNER))
 804                                         RETURN(-EPERM);
 805                         }
 806                 }
 807
 808
 809                 /* Won't invoke llu_vmtruncate(), as we already cleared
 810                  * ATTR_SIZE */
 811                 inode_setattr(inode, attr);
 812         }
 813
 814         if (ia_valid & ATTR_SIZE) {
 815                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
 816                                                            OBD_OBJECT_EOF} };
 817                 struct lustre_handle lockh = { 0, };
 818                 struct lustre_handle match_lockh = { 0, };
 819
 820                 int err;
 821                 int flags = LDLM_FL_TEST_LOCK; /* for assertion check below */
 822                 int lock_mode;
 823                 obd_flag obd_flags;
 824
 825                 /* check that there are no matching locks */
 826                 LASSERT(obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT, &policy,
 827                                   LCK_PW, &flags, inode, &match_lockh) <= 0);
 828
 829                 /* XXX when we fix the AST intents to pass the discard-range
 830                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
 831                  * XXX here. */
 832                 flags = (attr->ia_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
 833
 834                 if (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK) {
 835                         lock_mode = LCK_NL;
 836                         obd_flags = OBD_FL_TRUNCLOCK;
 837                         CDEBUG(D_INODE, "delegating locking to the OST");
 838                 } else {
 839                         lock_mode = LCK_PW;
 840                         obd_flags = 0;
 841                 }
 842
 843                 /* with lock_mode == LK_NL no lock is taken. */
 844                 rc = llu_extent_lock(NULL, inode, lsm, lock_mode, &policy,
 845                                      &lockh, flags);
 846                 if (rc != ELDLM_OK) {
 847                         if (rc > 0)
 848                                 GOTO(out, rc = -ENOLCK);
 849                         GOTO(out, rc);
 850                 }
 851                 rc = llu_vmtruncate(inode, attr->ia_size, obd_flags);
 852
 853                 /* unlock now as we don't mind others file lockers racing with
 854                  * the mds updates below? */
 855                 err = llu_extent_unlock(NULL, inode, lsm, lock_mode, &lockh);
 856                 if (err) {
 857                         CERROR("llu_extent_unlock failed: %d\n", err);
 858                         if (!rc)
 859                                 rc = err;
 860                 }
 861         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
 862                 struct obd_info oinfo = { { { 0 } } };
 863                 struct obdo oa;
 864
 865                 CDEBUG(D_INODE, "set mtime on OST inode %llu to %lu\n",
 866                        (long long)st->st_ino, LTIME_S(attr->ia_mtime));
 867                 oa.o_id = lsm->lsm_object_id;
 868                 oa.o_gr = lsm->lsm_object_gr;
 869                 oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
 870
 871                 obdo_from_inode(&oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
 872                                             OBD_MD_FLMTIME | OBD_MD_FLCTIME);
 873
 874                 oinfo.oi_oa = &oa;
 875                 oinfo.oi_md = lsm;
 876
 877                 rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
 878                 if (rc)
 879                         CERROR("obd_setattr_async fails: rc=%d\n", rc);
 880         }
 881         EXIT;
 882 out:
 883         if (op_data.op_ioepoch)
 884                 rc1 = llu_setattr_done_writing(inode, &op_data, mod);
 885         return rc ? rc : rc1;
 886 }
 887
 888 /* here we simply act as a thin layer to glue it with
 889  * llu_setattr_raw(), which is copy from kernel
 890  */
 891 static int llu_iop_setattr(struct pnode *pno,
 892                            struct inode *ino,
 893                            unsigned mask,
 894                            struct intnl_stat *stbuf)
 895 {
 896         struct iattr iattr;
 897         int rc;
 898         ENTRY;
 899
 900         liblustre_wait_event(0);
 901
 902         LASSERT(!(mask & ~(SETATTR_MTIME | SETATTR_ATIME |
 903                            SETATTR_UID | SETATTR_GID |
 904                            SETATTR_LEN | SETATTR_MODE)));
 905         memset(&iattr, 0, sizeof(iattr));
 906
 907         if (mask & SETATTR_MODE) {
 908                 iattr.ia_mode = stbuf->st_mode;
 909                 iattr.ia_valid |= ATTR_MODE;
 910         }
 911         if (mask & SETATTR_MTIME) {
 912                 iattr.ia_mtime = stbuf->st_mtime;
 913                 iattr.ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
 914         }
 915         if (mask & SETATTR_ATIME) {
 916                 iattr.ia_atime = stbuf->st_atime;
 917                 iattr.ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
 918         }
 919         if (mask & SETATTR_UID) {
 920                 iattr.ia_uid = stbuf->st_uid;
 921                 iattr.ia_valid |= ATTR_UID;
 922         }
 923         if (mask & SETATTR_GID) {
 924                 iattr.ia_gid = stbuf->st_gid;
 925                 iattr.ia_valid |= ATTR_GID;
 926         }
 927         if (mask & SETATTR_LEN) {
 928                 iattr.ia_size = stbuf->st_size; /* XXX signed expansion problem */
 929                 iattr.ia_valid |= ATTR_SIZE;
 930         }
 931
 932         iattr.ia_valid |= ATTR_RAW | ATTR_CTIME;
 933         iattr.ia_ctime = CURRENT_TIME;
 934
 935         rc = llu_setattr_raw(ino, &iattr);
 936         liblustre_wait_idle();
 937         RETURN(rc);
 938 }
 939
 940 #define EXT2_LINK_MAX           32000
 941
 942 static int llu_iop_symlink_raw(struct pnode *pno, const char *tgt)
 943 {
 944         struct inode *dir = pno->p_base->pb_parent->pb_ino;
 945         struct qstr *qstr = &pno->p_base->pb_name;
 946         const char *name = qstr->name;
 947         int len = qstr->len;
 948         struct ptlrpc_request *request = NULL;
 949         struct llu_sb_info *sbi = llu_i2sbi(dir);
 950         struct md_op_data op_data = {{ 0 }};
 951         int err = -EMLINK;
 952         ENTRY;
 953
 954         liblustre_wait_event(0);
 955         if (llu_i2stat(dir)->st_nlink >= EXT2_LINK_MAX)
 956                 RETURN(err);
 957
 958         llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
 959                             LUSTRE_OPC_SYMLINK);
 960
 961         err = md_create(sbi->ll_md_exp, &op_data,
 962                         tgt, strlen(tgt) + 1, S_IFLNK | S_IRWXUGO,
 963                         current->fsuid, current->fsgid, current->cap_effective,
 964                         0, &request);
 965         ptlrpc_req_finished(request);
 966         liblustre_wait_event(0);
 967         RETURN(err);
 968 }
 969
 970 static int llu_readlink_internal(struct inode *inode,
 971                                  struct ptlrpc_request **request,
 972                                  char **symname)
 973 {
 974         struct llu_inode_info *lli = llu_i2info(inode);
 975         struct llu_sb_info *sbi = llu_i2sbi(inode);
 976         struct mdt_body *body;
 977         struct intnl_stat *st = llu_i2stat(inode);
 978         int rc, symlen = st->st_size + 1;
 979         ENTRY;
 980
 981         *request = NULL;
 982
 983         if (lli->lli_symlink_name) {
 984                 *symname = lli->lli_symlink_name;
 985                 CDEBUG(D_INODE, "using cached symlink %s\n", *symname);
 986                 RETURN(0);
 987         }
 988
 989         rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), NULL,
 990                         OBD_MD_LINKNAME, symlen, request);
 991         if (rc) {
 992                 CERROR("inode %llu: rc = %d\n", (long long)st->st_ino, rc);
 993                 RETURN(rc);
 994         }
 995
 996         body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
 997         LASSERT(body != NULL);
 998
 999         if ((body->valid & OBD_MD_LINKNAME) == 0) {
1000                 CERROR ("OBD_MD_LINKNAME not set on reply\n");
1001                 GOTO (failed, rc = -EPROTO);
1002         }
1003
1004         LASSERT(symlen != 0);
1005         if (body->eadatasize != symlen) {
1006                 CERROR("inode %llu: symlink length %d not expected %d\n",
1007                        (long long)st->st_ino, body->eadatasize - 1, symlen - 1);
1008                 GOTO(failed, rc = -EPROTO);
1009         }
1010
1011         *symname = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_MD);
1012         if (*symname == NULL ||
1013             strnlen(*symname, symlen) != symlen - 1) {
1014                 /* not full/NULL terminated */
1015                 CERROR("inode %llu: symlink not NULL terminated string"
1016                        "of length %d\n", (long long)st->st_ino, symlen - 1);
1017                 GOTO(failed, rc = -EPROTO);
1018         }
1019
1020         OBD_ALLOC(lli->lli_symlink_name, symlen);
1021         /* do not return an error if we cannot cache the symlink locally */
1022         if (lli->lli_symlink_name)
1023                 memcpy(lli->lli_symlink_name, *symname, symlen);
1024
1025         RETURN(0);
1026
1027  failed:
1028         ptlrpc_req_finished (*request);
1029         RETURN (-EPROTO);
1030 }
1031
1032 static int llu_iop_readlink(struct pnode *pno, char *data, size_t bufsize)
1033 {
1034         struct inode *inode = pno->p_base->pb_ino;
1035         struct ptlrpc_request *request;
1036         char *symname;
1037         int rc;
1038         ENTRY;
1039
1040         liblustre_wait_event(0);
1041         rc = llu_readlink_internal(inode, &request, &symname);
1042         if (rc)
1043                 GOTO(out, rc);
1044
1045         LASSERT(symname);
1046         strncpy(data, symname, bufsize);
1047         rc = strlen(symname);
1048
1049         ptlrpc_req_finished(request);
1050  out:
1051         liblustre_wait_event(0);
1052         RETURN(rc);
1053 }
1054
1055 static int llu_iop_mknod_raw(struct pnode *pno,
1056                              mode_t mode,
1057                              dev_t dev)
1058 {
1059         struct ptlrpc_request *request = NULL;
1060         struct inode *dir = pno->p_parent->p_base->pb_ino;
1061         struct llu_sb_info *sbi = llu_i2sbi(dir);
1062         struct md_op_data op_data = {{ 0 }};
1063         int err = -EMLINK;
1064         ENTRY;
1065
1066         liblustre_wait_event(0);
1067         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu\n",
1068                (int)pno->p_base->pb_name.len, pno->p_base->pb_name.name,
1069                (long long)llu_i2stat(dir)->st_ino);
1070
1071         if (llu_i2stat(dir)->st_nlink >= EXT2_LINK_MAX)
1072                 RETURN(err);
1073
1074         switch (mode & S_IFMT) {
1075         case 0:
1076         case S_IFREG:
1077                 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
1078         case S_IFCHR:
1079         case S_IFBLK:
1080         case S_IFIFO:
1081         case S_IFSOCK:
1082                 llu_prep_md_op_data(&op_data, dir, NULL,
1083                                     pno->p_base->pb_name.name,
1084                                     pno->p_base->pb_name.len, 0,
1085                                     LUSTRE_OPC_MKNOD);
1086
1087                 err = md_create(sbi->ll_md_exp, &op_data, NULL, 0, mode,
1088                                 current->fsuid, current->fsgid,
1089                                 current->cap_effective, dev, &request);
1090                 ptlrpc_req_finished(request);
1091                 break;
1092         case S_IFDIR:
1093                 err = -EPERM;
1094                 break;
1095         default:
1096                 err = -EINVAL;
1097         }
1098         liblustre_wait_event(0);
1099         RETURN(err);
1100 }
1101
1102 static int llu_iop_link_raw(struct pnode *old, struct pnode *new)
1103 {
1104         struct inode *src = old->p_base->pb_ino;
1105         struct inode *dir = new->p_parent->p_base->pb_ino;
1106         const char *name = new->p_base->pb_name.name;
1107         int namelen = new->p_base->pb_name.len;
1108         struct ptlrpc_request *request = NULL;
1109         struct md_op_data op_data = {{ 0 }};
1110         int rc;
1111         ENTRY;
1112
1113         LASSERT(src);
1114         LASSERT(dir);
1115
1116         liblustre_wait_event(0);
1117         llu_prep_md_op_data(&op_data, src, dir, name, namelen, 0,
1118                             LUSTRE_OPC_ANY);
1119         rc = md_link(llu_i2sbi(src)->ll_md_exp, &op_data, &request);
1120         ptlrpc_req_finished(request);
1121         liblustre_wait_event(0);
1122
1123         RETURN(rc);
1124 }
1125
1126 /*
1127  * libsysio will clear the inode immediately after return
1128  */
1129 static int llu_iop_unlink_raw(struct pnode *pno)
1130 {
1131         struct inode *dir = pno->p_base->pb_parent->pb_ino;
1132         struct qstr *qstr = &pno->p_base->pb_name;
1133         const char *name = qstr->name;
1134         int len = qstr->len;
1135         struct inode *target = pno->p_base->pb_ino;
1136         struct ptlrpc_request *request = NULL;
1137         struct md_op_data op_data = { { 0 } };
1138         int rc;
1139         ENTRY;
1140
1141         LASSERT(target);
1142
1143         liblustre_wait_event(0);
1144         llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
1145                             LUSTRE_OPC_ANY);
1146         rc = md_unlink(llu_i2sbi(dir)->ll_md_exp, &op_data, &request);
1147         if (!rc)
1148                 rc = llu_objects_destroy(request, dir);
1149         ptlrpc_req_finished(request);
1150         liblustre_wait_idle();
1151
1152         RETURN(rc);
1153 }
1154
1155 static int llu_iop_rename_raw(struct pnode *old, struct pnode *new)
1156 {
1157         struct inode *src = old->p_parent->p_base->pb_ino;
1158         struct inode *tgt = new->p_parent->p_base->pb_ino;
1159         const char *oldname = old->p_base->pb_name.name;
1160         int oldnamelen = old->p_base->pb_name.len;
1161         const char *newname = new->p_base->pb_name.name;
1162         int newnamelen = new->p_base->pb_name.len;
1163         struct ptlrpc_request *request = NULL;
1164         struct md_op_data op_data = { { 0 } };
1165         int rc;
1166         ENTRY;
1167
1168         LASSERT(src);
1169         LASSERT(tgt);
1170
1171         liblustre_wait_event(0);
1172         llu_prep_md_op_data(&op_data, src, tgt, NULL, 0, 0,
1173                             LUSTRE_OPC_ANY);
1174         rc = md_rename(llu_i2sbi(src)->ll_md_exp, &op_data,
1175                        oldname, oldnamelen, newname, newnamelen,
1176                        &request);
1177         if (!rc) {
1178                 rc = llu_objects_destroy(request, src);
1179         }
1180
1181         ptlrpc_req_finished(request);
1182         liblustre_wait_idle();
1183
1184         RETURN(rc);
1185 }
1186
1187 #ifdef _HAVE_STATVFS
1188 static int llu_statfs_internal(struct llu_sb_info *sbi,
1189                                struct obd_statfs *osfs, __u64 max_age)
1190 {
1191         struct obd_statfs obd_osfs;
1192         int rc;
1193         ENTRY;
1194
1195         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, 0);
1196         if (rc) {
1197                 CERROR("md_statfs fails: rc = %d\n", rc);
1198                 RETURN(rc);
1199         }
1200
1201         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1202                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1203
1204         rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
1205                               &obd_statfs, max_age, 0);
1206         if (rc) {
1207                 CERROR("obd_statfs fails: rc = %d\n", rc);
1208                 RETURN(rc);
1209         }
1210
1211         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1212                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1213                obd_osfs.os_files);
1214
1215         osfs->os_blocks = obd_osfs.os_blocks;
1216         osfs->os_bfree = obd_osfs.os_bfree;
1217         osfs->os_bavail = obd_osfs.os_bavail;
1218
1219         /* If we don't have as many objects free on the OST as inodes
1220          * on the MDS, we reduce the total number of inodes to
1221          * compensate, so that the "inodes in use" number is correct.
1222          */
1223         if (obd_osfs.os_ffree < osfs->os_ffree) {
1224                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1225                         obd_osfs.os_ffree;
1226                 osfs->os_ffree = obd_osfs.os_ffree;
1227         }
1228
1229         RETURN(rc);
1230 }
1231
1232 static int llu_statfs(struct llu_sb_info *sbi, struct statfs *sfs)
1233 {
1234         struct obd_statfs osfs;
1235         int rc;
1236
1237         CDEBUG(D_VFSTRACE, "VFS Op:\n");
1238
1239         /* For now we will always get up-to-date statfs values, but in the
1240          * future we may allow some amount of caching on the client (e.g.
1241          * from QOS or lprocfs updates). */
1242         rc = llu_statfs_internal(sbi, &osfs, cfs_time_current_64() - HZ);
1243         if (rc)
1244                 return rc;
1245
1246         statfs_unpack(sfs, &osfs);
1247
1248         if (sizeof(sfs->f_blocks) == 4) {
1249                 while (osfs.os_blocks > ~0UL) {
1250                         sfs->f_bsize <<= 1;
1251
1252                         osfs.os_blocks >>= 1;
1253                         osfs.os_bfree >>= 1;
1254                         osfs.os_bavail >>= 1;
1255                 }
1256         }
1257
1258         sfs->f_blocks = osfs.os_blocks;
1259         sfs->f_bfree = osfs.os_bfree;
1260         sfs->f_bavail = osfs.os_bavail;
1261
1262         return 0;
1263 }
1264
1265 static int llu_iop_statvfs(struct pnode *pno,
1266                            struct inode *ino,
1267                            struct intnl_statvfs *buf)
1268 {
1269         struct statfs fs;
1270         int rc;
1271         ENTRY;
1272
1273         liblustre_wait_event(0);
1274
1275 #ifndef __CYGWIN__
1276         LASSERT(pno->p_base->pb_ino);
1277         rc = llu_statfs(llu_i2sbi(pno->p_base->pb_ino), &fs);
1278         if (rc)
1279                 RETURN(rc);
1280
1281         /* from native driver */
1282         buf->f_bsize = fs.f_bsize;  /* file system block size */
1283         buf->f_frsize = fs.f_bsize; /* file system fundamental block size */
1284         buf->f_blocks = fs.f_blocks;
1285         buf->f_bfree = fs.f_bfree;
1286         buf->f_bavail = fs.f_bavail;
1287         buf->f_files = fs.f_files;  /* Total number serial numbers */
1288         buf->f_ffree = fs.f_ffree;  /* Number free serial numbers */
1289         buf->f_favail = fs.f_ffree; /* Number free ser num for non-privileged*/
1290         buf->f_fsid = fs.f_fsid.__val[1];
1291         buf->f_flag = 0;            /* No equiv in statfs; maybe use type? */
1292         buf->f_namemax = fs.f_namelen;
1293 #endif
1294
1295         liblustre_wait_event(0);
1296         RETURN(0);
1297 }
1298 #endif /* _HAVE_STATVFS */
1299
1300 static int llu_iop_mkdir_raw(struct pnode *pno, mode_t mode)
1301 {
1302         struct inode *dir = pno->p_base->pb_parent->pb_ino;
1303         struct qstr *qstr = &pno->p_base->pb_name;
1304         const char *name = qstr->name;
1305         int len = qstr->len;
1306         struct ptlrpc_request *request = NULL;
1307         struct intnl_stat *st = llu_i2stat(dir);
1308         struct md_op_data op_data = {{ 0 }};
1309         int err = -EMLINK;
1310         ENTRY;
1311
1312         liblustre_wait_event(0);
1313         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu/%lu(%p)\n", len, name,
1314                (long long)st->st_ino, llu_i2info(dir)->lli_st_generation, dir);
1315
1316         if (st->st_nlink >= EXT2_LINK_MAX)
1317                 RETURN(err);
1318
1319         llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
1320                             LUSTRE_OPC_MKDIR);
1321
1322         err = md_create(llu_i2sbi(dir)->ll_md_exp, &op_data, NULL, 0,
1323                         mode | S_IFDIR, current->fsuid, current->fsgid,
1324                         current->cap_effective, 0, &request);
1325         ptlrpc_req_finished(request);
1326         liblustre_wait_event(0);
1327         RETURN(err);
1328 }
1329
1330 static int llu_iop_rmdir_raw(struct pnode *pno)
1331 {
1332         struct inode *dir = pno->p_base->pb_parent->pb_ino;
1333         struct qstr *qstr = &pno->p_base->pb_name;
1334         const char *name = qstr->name;
1335         int len = qstr->len;
1336         struct ptlrpc_request *request = NULL;
1337         struct md_op_data op_data = {{ 0 }};
1338         int rc;
1339         ENTRY;
1340
1341         liblustre_wait_event(0);
1342         CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu/%lu(%p)\n", len, name,
1343                (long long)llu_i2stat(dir)->st_ino,
1344                llu_i2info(dir)->lli_st_generation, dir);
1345
1346         llu_prep_md_op_data(&op_data, dir, NULL, name, len, S_IFDIR,
1347                             LUSTRE_OPC_ANY);
1348         rc = md_unlink(llu_i2sbi(dir)->ll_md_exp, &op_data, &request);
1349         ptlrpc_req_finished(request);
1350
1351         liblustre_wait_event(0);
1352         RETURN(rc);
1353 }
1354
1355 #ifdef O_DIRECT
1356 #define FCNTL_FLMASK (O_APPEND|O_NONBLOCK|O_ASYNC|O_DIRECT)
1357 #else
1358 #define FCNTL_FLMASK (O_APPEND|O_NONBLOCK|O_ASYNC)
1359 #endif
1360 #define FCNTL_FLMASK_INVALID (O_NONBLOCK|O_ASYNC)
1361
1362 /* refer to ll_file_flock() for details */
1363 static int llu_file_flock(struct inode *ino,
1364                           int cmd,
1365                           struct file_lock *file_lock)
1366 {
1367         struct llu_inode_info *lli = llu_i2info(ino);
1368         struct intnl_stat *st = llu_i2stat(ino);
1369         struct ldlm_res_id res_id =
1370                 { .name = {fid_seq(&lli->lli_fid),
1371                            fid_oid(&lli->lli_fid),
1372                            fid_ver(&lli->lli_fid),
1373                            LDLM_FLOCK} };
1374         struct ldlm_enqueue_info einfo = { LDLM_FLOCK, 0, NULL,
1375                 ldlm_flock_completion_ast, NULL, file_lock };
1376
1377         struct lustre_handle lockh = {0};
1378         ldlm_policy_data_t flock;
1379         int flags = 0;
1380         int rc;
1381
1382         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu file_lock=%p\n",
1383                (unsigned long long)st->st_ino, file_lock);
1384
1385         flock.l_flock.pid = file_lock->fl_pid;
1386         flock.l_flock.start = file_lock->fl_start;
1387         flock.l_flock.end = file_lock->fl_end;
1388
1389         switch (file_lock->fl_type) {
1390         case F_RDLCK:
1391                 einfo.ei_mode = LCK_PR;
1392                 break;
1393         case F_UNLCK:
1394                 einfo.ei_mode = LCK_NL;
1395                 break;
1396         case F_WRLCK:
1397                 einfo.ei_mode = LCK_PW;
1398                 break;
1399         default:
1400                 CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
1401                 LBUG();
1402         }
1403
1404         switch (cmd) {
1405         case F_SETLKW:
1406 #ifdef F_SETLKW64
1407 #if F_SETLKW64 != F_SETLKW
1408         case F_SETLKW64:
1409 #endif
1410 #endif
1411                 flags = 0;
1412                 break;
1413         case F_SETLK:
1414 #ifdef F_SETLK64
1415 #if F_SETLK64 != F_SETLK
1416         case F_SETLK64:
1417 #endif
1418 #endif
1419                 flags = LDLM_FL_BLOCK_NOWAIT;
1420                 break;
1421         case F_GETLK:
1422 #ifdef F_GETLK64
1423 #if F_GETLK64 != F_GETLK
1424         case F_GETLK64:
1425 #endif
1426 #endif
1427                 flags = LDLM_FL_TEST_LOCK;
1428                 file_lock->fl_type = einfo.ei_mode;
1429                 break;
1430         default:
1431                 CERROR("unknown fcntl cmd: %d\n", cmd);
1432                 LBUG();
1433         }
1434
1435         CDEBUG(D_DLMTRACE, "inode=%llu, pid=%u, cmd=%d, flags=%#x, mode=%u, "
1436                "start="LPX64", end="LPX64"\n", (unsigned long long)st->st_ino,
1437                flock.l_flock.pid, cmd, flags, einfo.ei_mode, flock.l_flock.start,
1438                flock.l_flock.end);
1439
1440         {
1441                 struct lmv_obd *lmv;
1442                 struct obd_device *lmv_obd;
1443                 lmv_obd = class_exp2obd(llu_i2mdexp(ino));
1444                 lmv = &lmv_obd->u.lmv;
1445
1446                 if (lmv->desc.ld_tgt_count < 1)
1447                         RETURN(rc = -ENODEV);
1448
1449                 if (lmv->tgts[0].ltd_exp != NULL)
1450                         rc = ldlm_cli_enqueue(lmv->tgts[0].ltd_exp, NULL, &einfo, &res_id,
1451                                               &flock, &flags, NULL, 0, NULL, &lockh, 0);
1452                 else
1453                         rc = -ENODEV;
1454         }
1455         RETURN(rc);
1456 }
1457
1458 static int assign_type(struct file_lock *fl, int type)
1459 {
1460         switch (type) {
1461         case F_RDLCK:
1462         case F_WRLCK:
1463         case F_UNLCK:
1464                 fl->fl_type = type;
1465                 return 0;
1466         default:
1467                 return -EINVAL;
1468         }
1469 }
1470
1471 static int flock_to_posix_lock(struct inode *ino,
1472                                struct file_lock *fl,
1473                                struct flock *l)
1474 {
1475         switch (l->l_whence) {
1476         /* XXX: only SEEK_SET is supported in lustre */
1477         case SEEK_SET:
1478                 fl->fl_start = 0;
1479                 break;
1480         default:
1481                 return -EINVAL;
1482         }
1483
1484         fl->fl_end = l->l_len - 1;
1485         if (l->l_len < 0)
1486                 return -EINVAL;
1487         if (l->l_len == 0)
1488                 fl->fl_end = OFFSET_MAX;
1489
1490         fl->fl_pid = getpid();
1491         fl->fl_flags = FL_POSIX;
1492         fl->fl_notify = NULL;
1493         fl->fl_insert = NULL;
1494         fl->fl_remove = NULL;
1495         /* XXX: these fields can't be filled with suitable values,
1496                 but I think lustre doesn't use them.
1497          */
1498         fl->fl_owner = NULL;
1499         fl->fl_file = NULL;
1500
1501         return assign_type(fl, l->l_type);
1502 }
1503
1504 static int llu_fcntl_getlk(struct inode *ino, struct flock *flock)
1505 {
1506         struct file_lock fl;
1507         int error;
1508
1509         error = EINVAL;
1510         if ((flock->l_type != F_RDLCK) && (flock->l_type != F_WRLCK))
1511                 goto out;
1512
1513         error = flock_to_posix_lock(ino, &fl, flock);
1514         if (error)
1515                 goto out;
1516
1517         error = llu_file_flock(ino, F_GETLK, &fl);
1518         if (error)
1519                 goto out;
1520
1521         flock->l_type = F_UNLCK;
1522         if (fl.fl_type != F_UNLCK) {
1523                 flock->l_pid = fl.fl_pid;
1524                 flock->l_start = fl.fl_start;
1525                 flock->l_len = fl.fl_end == OFFSET_MAX ? 0:
1526                         fl.fl_end - fl.fl_start + 1;
1527                 flock->l_whence = SEEK_SET;
1528                 flock->l_type = fl.fl_type;
1529         }
1530
1531 out:
1532         return error;
1533 }
1534
1535 static int llu_fcntl_setlk(struct inode *ino, int cmd, struct flock *flock)
1536 {
1537         struct file_lock fl;
1538         int flags = llu_i2info(ino)->lli_open_flags + 1;
1539         int error;
1540
1541         error = flock_to_posix_lock(ino, &fl, flock);
1542         if (error)
1543                 goto out;
1544         if (cmd == F_SETLKW)
1545                 fl.fl_flags |= FL_SLEEP;
1546
1547         error = -EBADF;
1548         switch (flock->l_type) {
1549         case F_RDLCK:
1550                 if (!(flags & FMODE_READ))
1551                         goto out;
1552                 break;
1553         case F_WRLCK:
1554                 if (!(flags & FMODE_WRITE))
1555                         goto out;
1556                 break;
1557         case F_UNLCK:
1558                 break;
1559         default:
1560                 error = -EINVAL;
1561                 goto out;
1562         }
1563
1564         error = llu_file_flock(ino, cmd, &fl);
1565         if (error)
1566                 goto out;
1567
1568 out:
1569         return error;
1570 }
1571
1572 static int llu_iop_fcntl(struct inode *ino, int cmd, va_list ap, int *rtn)
1573 {
1574         struct llu_inode_info *lli = llu_i2info(ino);
1575         long flags;
1576         struct flock *flock;
1577         long err = 0;
1578
1579         liblustre_wait_event(0);
1580         switch (cmd) {
1581         case F_GETFL:
1582                 *rtn = lli->lli_open_flags;
1583                 break;
1584         case F_SETFL:
1585                 flags = va_arg(ap, long);
1586                 flags &= FCNTL_FLMASK;
1587                 if (flags & FCNTL_FLMASK_INVALID) {
1588                         LCONSOLE_ERROR_MSG(0x010, "liblustre does not support "
1589                                            "the O_NONBLOCK or O_ASYNC flags. "
1590                                            "Please fix your application.\n");
1591                         *rtn = -EINVAL;
1592                         err = EINVAL;
1593                         break;
1594                 }
1595                 lli->lli_open_flags = (int)(flags & FCNTL_FLMASK) |
1596                                       (lli->lli_open_flags & ~FCNTL_FLMASK);
1597                 *rtn = 0;
1598                 break;
1599         case F_GETLK:
1600 #ifdef F_GETLK64
1601 #if F_GETLK64 != F_GETLK
1602         case F_GETLK64:
1603 #endif
1604 #endif
1605                 flock = va_arg(ap, struct flock *);
1606                 err = llu_fcntl_getlk(ino, flock);
1607                 *rtn = err? -1: 0;
1608                 break;
1609         case F_SETLK:
1610 #ifdef F_SETLKW64
1611 #if F_SETLKW64 != F_SETLKW
1612         case F_SETLKW64:
1613 #endif
1614 #endif
1615         case F_SETLKW:
1616 #ifdef F_SETLK64
1617 #if F_SETLK64 != F_SETLK
1618         case F_SETLK64:
1619 #endif
1620 #endif
1621                 flock = va_arg(ap, struct flock *);
1622                 err = llu_fcntl_setlk(ino, cmd, flock);
1623                 *rtn = err? -1: 0;
1624                 break;
1625         default:
1626                 CERROR("unsupported fcntl cmd %x\n", cmd);
1627                 *rtn = -ENOSYS;
1628                 err = ENOSYS;
1629                 break;
1630         }
1631
1632         liblustre_wait_event(0);
1633         return err;
1634 }
1635
1636 static int llu_get_grouplock(struct inode *inode, unsigned long arg)
1637 {
1638         struct llu_inode_info *lli = llu_i2info(inode);
1639         struct ll_file_data *fd = lli->lli_file_data;
1640         ldlm_policy_data_t policy = { .l_extent = { .start = 0,
1641                                                     .end = OBD_OBJECT_EOF}};
1642         struct lustre_handle lockh = { 0 };
1643         struct lov_stripe_md *lsm = lli->lli_smd;
1644         ldlm_error_t err;
1645         int flags = 0;
1646         ENTRY;
1647
1648         if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1649                 RETURN(-EINVAL);
1650         }
1651
1652         policy.l_extent.gid = arg;
1653         if (lli->lli_open_flags & O_NONBLOCK)
1654                 flags = LDLM_FL_BLOCK_NOWAIT;
1655
1656         err = llu_extent_lock(fd, inode, lsm, LCK_GROUP, &policy, &lockh,
1657                               flags);
1658         if (err)
1659                 RETURN(err);
1660
1661         fd->fd_flags |= LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK;
1662         fd->fd_gid = arg;
1663         memcpy(&fd->fd_cwlockh, &lockh, sizeof(lockh));
1664
1665         RETURN(0);
1666 }
1667
1668 static int llu_put_grouplock(struct inode *inode, unsigned long arg)
1669 {
1670         struct llu_inode_info *lli = llu_i2info(inode);
1671         struct ll_file_data *fd = lli->lli_file_data;
1672         struct lov_stripe_md *lsm = lli->lli_smd;
1673         ldlm_error_t err;
1674         ENTRY;
1675
1676         if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED))
1677                 RETURN(-EINVAL);
1678
1679         if (fd->fd_gid != arg)
1680                 RETURN(-EINVAL);
1681
1682         fd->fd_flags &= ~(LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK);
1683
1684         err = llu_extent_unlock(fd, inode, lsm, LCK_GROUP, &fd->fd_cwlockh);
1685         if (err)
1686                 RETURN(err);
1687
1688         fd->fd_gid = 0;
1689         memset(&fd->fd_cwlockh, 0, sizeof(fd->fd_cwlockh));
1690
1691         RETURN(0);
1692 }
1693
1694 static int llu_lov_dir_setstripe(struct inode *ino, unsigned long arg)
1695 {
1696         struct llu_sb_info *sbi = llu_i2sbi(ino);
1697         struct ptlrpc_request *request = NULL;
1698         struct md_op_data op_data = {{ 0 }};
1699         struct lov_user_md lum, *lump = (struct lov_user_md *)arg;
1700         int rc = 0;
1701
1702         llu_prep_md_op_data(&op_data, ino, NULL, NULL, 0, 0,
1703                             LUSTRE_OPC_ANY);
1704
1705         LASSERT(sizeof(lum) == sizeof(*lump));
1706         LASSERT(sizeof(lum.lmm_objects[0]) ==
1707                 sizeof(lump->lmm_objects[0]));
1708         rc = copy_from_user(&lum, lump, sizeof(lum));
1709         if (rc)
1710                 return(-EFAULT);
1711
1712         if (lum.lmm_magic != LOV_USER_MAGIC)
1713                 RETURN(-EINVAL);
1714
1715         if (lum.lmm_magic != cpu_to_le32(LOV_USER_MAGIC))
1716                 lustre_swab_lov_user_md(&lum);
1717
1718         /* swabbing is done in lov_setstripe() on server side */
1719         rc = md_setattr(sbi->ll_md_exp, &op_data, &lum,
1720                         sizeof(lum), NULL, 0, &request, NULL);
1721         if (rc) {
1722                 ptlrpc_req_finished(request);
1723                 if (rc != -EPERM && rc != -EACCES)
1724                         CERROR("md_setattr fails: rc = %d\n", rc);
1725                 return rc;
1726         }
1727         ptlrpc_req_finished(request);
1728
1729         return rc;
1730 }
1731
1732 static int llu_lov_setstripe_ea_info(struct inode *ino, int flags,
1733                                      struct lov_user_md *lum, int lum_size)
1734 {
1735         struct llu_sb_info *sbi = llu_i2sbi(ino);
1736         struct llu_inode_info *lli = llu_i2info(ino);
1737         struct llu_inode_info *lli2 = NULL;
1738         struct lov_stripe_md *lsm;
1739         struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1740         struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_CR,
1741                 llu_md_blocking_ast, ldlm_completion_ast, NULL, NULL };
1742
1743         struct ptlrpc_request *req = NULL;
1744         struct lustre_md md;
1745         struct md_op_data data = {{ 0 }};
1746         struct lustre_handle lockh;
1747         int rc = 0;
1748         ENTRY;
1749
1750         lsm = lli->lli_smd;
1751         if (lsm) {
1752                 CDEBUG(D_IOCTL, "stripe already exists for ino "DFID"\n",
1753                        PFID(&lli->lli_fid));
1754                 return -EEXIST;
1755         }
1756
1757         OBD_ALLOC(lli2, sizeof(struct llu_inode_info));
1758         if (!lli2)
1759                 return -ENOMEM;
1760
1761         memcpy(lli2, lli, sizeof(struct llu_inode_info));
1762         lli2->lli_open_count = 0;
1763         lli2->lli_it = NULL;
1764         lli2->lli_file_data = NULL;
1765         lli2->lli_smd = NULL;
1766         lli2->lli_symlink_name = NULL;
1767         ino->i_private = lli2;
1768
1769         llu_prep_md_op_data(&data, NULL, ino, NULL, 0, O_RDWR,
1770                             LUSTRE_OPC_ANY);
1771
1772         rc = md_enqueue(sbi->ll_md_exp, &einfo, &oit, &data,
1773                         &lockh, lum, lum_size, LDLM_FL_INTENT_ONLY);
1774         if (rc)
1775                 GOTO(out, rc);
1776
1777         req = oit.d.lustre.it_data;
1778         rc = it_open_error(DISP_IT_EXECD, &oit);
1779         if (rc) {
1780                 req->rq_replay = 0;
1781                 GOTO(out, rc);
1782         }
1783
1784         rc = it_open_error(DISP_OPEN_OPEN, &oit);
1785         if (rc) {
1786                 req->rq_replay = 0;
1787                 GOTO(out, rc);
1788         }
1789
1790         rc = md_get_lustre_md(sbi->ll_md_exp, req,
1791                               sbi->ll_dt_exp, sbi->ll_md_exp, &md);
1792         if (rc)
1793                 GOTO(out, rc);
1794
1795         llu_update_inode(ino, md.body, md.lsm);
1796         lli->lli_smd = lli2->lli_smd;
1797         lli2->lli_smd = NULL;
1798
1799         llu_local_open(lli2, &oit);
1800
1801         /* release intent */
1802         if (lustre_handle_is_used(&lockh))
1803                 ldlm_lock_decref(&lockh, LCK_CR);
1804
1805         ptlrpc_req_finished(req);
1806         req = NULL;
1807
1808         rc = llu_file_release(ino);
1809  out:
1810         ino->i_private = lli;
1811         if (lli2)
1812                 OBD_FREE(lli2, sizeof(struct llu_inode_info));
1813         if (req != NULL)
1814                 ptlrpc_req_finished(req);
1815         RETURN(rc);
1816 }
1817
1818 static int llu_lov_file_setstripe(struct inode *ino, unsigned long arg)
1819 {
1820         struct lov_user_md lum, *lump = (struct lov_user_md *)arg;
1821         int rc;
1822         int flags = FMODE_WRITE;
1823         ENTRY;
1824
1825         LASSERT(sizeof(lum) == sizeof(*lump));
1826         LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lump->lmm_objects[0]));
1827         rc = copy_from_user(&lum, lump, sizeof(lum));
1828         if (rc)
1829                 RETURN(-EFAULT);
1830
1831         rc = llu_lov_setstripe_ea_info(ino, flags, &lum, sizeof(lum));
1832         RETURN(rc);
1833 }
1834
1835 static int llu_lov_setstripe(struct inode *ino, unsigned long arg)
1836 {
1837         struct intnl_stat *st = llu_i2stat(ino);
1838         if (S_ISREG(st->st_mode))
1839                 return llu_lov_file_setstripe(ino, arg);
1840         if (S_ISDIR(st->st_mode))
1841                 return llu_lov_dir_setstripe(ino, arg);
1842
1843         return -EINVAL;
1844 }
1845
1846 static int llu_lov_getstripe(struct inode *ino, unsigned long arg)
1847 {
1848         struct lov_stripe_md *lsm = llu_i2info(ino)->lli_smd;
1849
1850         if (!lsm)
1851                 RETURN(-ENODATA);
1852
1853         return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, llu_i2obdexp(ino), 0, lsm,
1854                             (void *)arg);
1855 }
1856
1857 static int llu_iop_ioctl(struct inode *ino, unsigned long int request,
1858                          va_list ap)
1859 {
1860         unsigned long arg;
1861         int rc;
1862
1863         liblustre_wait_event(0);
1864
1865         switch (request) {
1866         case LL_IOC_GROUP_LOCK:
1867                 arg = va_arg(ap, unsigned long);
1868                 rc = llu_get_grouplock(ino, arg);
1869                 break;
1870         case LL_IOC_GROUP_UNLOCK:
1871                 arg = va_arg(ap, unsigned long);
1872                 rc = llu_put_grouplock(ino, arg);
1873                 break;
1874         case LL_IOC_LOV_SETSTRIPE:
1875                 arg = va_arg(ap, unsigned long);
1876                 rc = llu_lov_setstripe(ino, arg);
1877                 break;
1878         case LL_IOC_LOV_GETSTRIPE:
1879                 arg = va_arg(ap, unsigned long);
1880                 rc = llu_lov_getstripe(ino, arg);
1881                 break;
1882         default:
1883                 CERROR("did not support ioctl cmd %lx\n", request);
1884                 rc = -ENOSYS;
1885                 break;
1886         }
1887
1888         liblustre_wait_event(0);
1889         return rc;
1890 }
1891
1892 /*
1893  * we already do syncronous read/write
1894  */
1895 static int llu_iop_sync(struct inode *inode)
1896 {
1897         liblustre_wait_event(0);
1898         return 0;
1899 }
1900
1901 static int llu_iop_datasync(struct inode *inode)
1902 {
1903         liblustre_wait_event(0);
1904         return 0;
1905 }
1906
1907 struct filesys_ops llu_filesys_ops =
1908 {
1909         fsop_gone: llu_fsop_gone,
1910 };
1911
1912 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md)
1913 {
1914         struct inode *inode;
1915         struct lu_fid fid;
1916         struct file_identifier fileid = {&fid, sizeof(fid)};
1917
1918         if ((md->body->valid & (OBD_MD_FLID | OBD_MD_FLTYPE)) !=
1919             (OBD_MD_FLID | OBD_MD_FLTYPE)) {
1920                 CERROR("bad md body valid mask "LPX64"\n", md->body->valid);
1921                 LBUG();
1922                 return ERR_PTR(-EPERM);
1923         }
1924
1925         /* try to find existing inode */
1926         fid = md->body->fid1;
1927
1928         inode = _sysio_i_find(fs, &fileid);
1929         if (inode) {
1930                 if (inode->i_zombie/* ||
1931                     lli->lli_st_generation != md->body->generation*/) {
1932                         I_RELE(inode);
1933                 }
1934                 else {
1935                         llu_update_inode(inode, md->body, md->lsm);
1936                         return inode;
1937                 }
1938         }
1939
1940         inode = llu_new_inode(fs, &fid);
1941         if (inode)
1942                 llu_update_inode(inode, md->body, md->lsm);
1943
1944         return inode;
1945 }
1946
1947 static int
1948 llu_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
1949 {
1950         struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
1951         __u32 valsize = sizeof(struct lov_desc);
1952         int rc, easize, def_easize, cookiesize;
1953         struct lov_desc desc;
1954         __u32 stripes;
1955         ENTRY;
1956
1957         rc = obd_get_info(dt_exp, strlen(KEY_LOVDESC) + 1, KEY_LOVDESC,
1958                           &valsize, &desc);
1959         if (rc)
1960                 RETURN(rc);
1961
1962         stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
1963         lsm.lsm_stripe_count = stripes;
1964         easize = obd_size_diskmd(dt_exp, &lsm);
1965
1966         lsm.lsm_stripe_count = desc.ld_default_stripe_count;
1967         def_easize = obd_size_diskmd(dt_exp, &lsm);
1968
1969         cookiesize = stripes * sizeof(struct llog_cookie);
1970
1971         CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
1972                easize, cookiesize);
1973
1974         rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
1975         RETURN(rc);
1976 }
1977
1978 static int
1979 llu_fsswop_mount(const char *source,
1980                  unsigned flags,
1981                  const void *data __IS_UNUSED,
1982                  struct pnode *tocover,
1983                  struct mount **mntp)
1984 {
1985         struct filesys *fs;
1986         struct inode *root;
1987         struct pnode_base *rootpb;
1988         struct obd_device *obd;
1989         struct lu_fid rootfid;
1990         struct llu_sb_info *sbi;
1991         struct obd_statfs osfs;
1992         static struct qstr noname = { NULL, 0, 0 };
1993         struct ptlrpc_request *request = NULL;
1994         struct lustre_handle md_conn = {0, };
1995         struct lustre_handle dt_conn = {0, };
1996         struct lustre_md md;
1997         class_uuid_t uuid;
1998         struct config_llog_instance cfg = {0, };
1999         char ll_instance[sizeof(sbi) * 2 + 1];
2000         struct lustre_profile *lprof;
2001         char *zconf_mgsnid, *zconf_profile;
2002         char *osc = NULL, *mdc = NULL;
2003         int async = 1, err = -EINVAL;
2004         struct obd_connect_data ocd = {0,};
2005
2006         ENTRY;
2007
2008         if (ll_parse_mount_target(source,
2009                                   &zconf_mgsnid,
2010                                   &zconf_profile)) {
2011                 CERROR("mal-formed target %s\n", source);
2012                 RETURN(err);
2013         }
2014         if (!zconf_mgsnid || !zconf_profile) {
2015                 printf("Liblustre: invalid target %s\n", source);
2016                 RETURN(err);
2017         }
2018         /* allocate & initialize sbi */
2019         OBD_ALLOC(sbi, sizeof(*sbi));
2020         if (!sbi)
2021                 RETURN(-ENOMEM);
2022
2023         CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
2024         ll_generate_random_uuid(uuid);
2025         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
2026
2027         /* generate a string unique to this super, let's try
2028          the address of the super itself.*/
2029         sprintf(ll_instance, "%p", sbi);
2030
2031         /* retrive & parse config log */
2032         cfg.cfg_instance = ll_instance;
2033         cfg.cfg_uuid = sbi->ll_sb_uuid;
2034         err = liblustre_process_log(&cfg, zconf_mgsnid, zconf_profile, 1);
2035         if (err < 0) {
2036                 CERROR("Unable to process log: %s\n", zconf_profile);
2037                 GOTO(out_free, err);
2038         }
2039
2040         lprof = class_get_profile(zconf_profile);
2041         if (lprof == NULL) {
2042                 CERROR("No profile found: %s\n", zconf_profile);
2043                 GOTO(out_free, err = -EINVAL);
2044         }
2045         OBD_ALLOC(osc, strlen(lprof->lp_dt) + strlen(ll_instance) + 2);
2046         sprintf(osc, "%s-%s", lprof->lp_dt, ll_instance);
2047
2048         OBD_ALLOC(mdc, strlen(lprof->lp_md) + strlen(ll_instance) + 2);
2049         sprintf(mdc, "%s-%s", lprof->lp_md, ll_instance);
2050
2051         if (!osc) {
2052                 CERROR("no osc\n");
2053                 GOTO(out_free, err = -EINVAL);
2054         }
2055         if (!mdc) {
2056                 CERROR("no mdc\n");
2057                 GOTO(out_free, err = -EINVAL);
2058         }
2059
2060         fs = _sysio_fs_new(&llu_filesys_ops, flags, sbi);
2061         if (!fs) {
2062                 err = -ENOMEM;
2063                 goto out_free;
2064         }
2065
2066         obd = class_name2obd(mdc);
2067         if (!obd) {
2068                 CERROR("MDC %s: not setup or attached\n", mdc);
2069                 GOTO(out_free, err = -EINVAL);
2070         }
2071         obd_set_info_async(obd->obd_self_export, strlen("async"), "async",
2072                            sizeof(async), &async, NULL);
2073
2074         ocd.ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_VERSION |
2075                                 OBD_CONNECT_FID;
2076 #ifdef LIBLUSTRE_POSIX_ACL
2077         ocd.ocd_connect_flags |= OBD_CONNECT_ACL;
2078 #endif
2079         ocd.ocd_ibits_known = MDS_INODELOCK_FULL;
2080         ocd.ocd_version = LUSTRE_VERSION_CODE;
2081
2082         /* setup mdc */
2083         err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, &ocd);
2084         if (err) {
2085                 CERROR("cannot connect to %s: rc = %d\n", mdc, err);
2086                 GOTO(out_free, err);
2087         }
2088         sbi->ll_md_exp = class_conn2export(&md_conn);
2089
2090         err = obd_statfs(obd, &osfs, 100000000, 0);
2091         if (err)
2092                 GOTO(out_md, err);
2093
2094         /*
2095          * FIXME fill fs stat data into sbi here!!! FIXME
2096          */
2097
2098         /* setup osc */
2099         obd = class_name2obd(osc);
2100         if (!obd) {
2101                 CERROR("OSC %s: not setup or attached\n", osc);
2102                 GOTO(out_md, err = -EINVAL);
2103         }
2104         obd_set_info_async(obd->obd_self_export, strlen("async"), "async",
2105                            sizeof(async), &async, NULL);
2106
2107         obd->obd_upcall.onu_owner = &sbi->ll_lco;
2108         obd->obd_upcall.onu_upcall = ll_ocd_update;
2109
2110         ocd.ocd_connect_flags = OBD_CONNECT_SRVLOCK | OBD_CONNECT_REQPORTAL |
2111                                 OBD_CONNECT_VERSION | OBD_CONNECT_TRUNCLOCK |
2112                                 OBD_CONNECT_FID;
2113         ocd.ocd_version = LUSTRE_VERSION_CODE;
2114         err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, &ocd);
2115         if (err) {
2116                 CERROR("cannot connect to %s: rc = %d\n", osc, err);
2117                 GOTO(out_md, err);
2118         }
2119         sbi->ll_dt_exp = class_conn2export(&dt_conn);
2120         sbi->ll_lco.lco_flags = ocd.ocd_connect_flags;
2121
2122         llu_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);
2123
2124         err = md_getstatus(sbi->ll_md_exp, &rootfid, NULL);
2125         if (err) {
2126                 CERROR("cannot mds_connect: rc = %d\n", err);
2127                 GOTO(out_dt, err);
2128         }
2129         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
2130         sbi->ll_root_fid = rootfid;
2131
2132         /* fetch attr of root inode */
2133         err = md_getattr(sbi->ll_md_exp, &rootfid, NULL,
2134                          OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS, 0, &request);
2135         if (err) {
2136                 CERROR("md_getattr failed for root: rc = %d\n", err);
2137                 GOTO(out_dt, err);
2138         }
2139
2140         err = md_get_lustre_md(sbi->ll_md_exp, request,
2141                                sbi->ll_dt_exp, sbi->ll_md_exp, &md);
2142         if (err) {
2143                 CERROR("failed to understand root inode md: rc = %d\n",err);
2144                 GOTO(out_request, err);
2145         }
2146
2147         LASSERT(fid_is_sane(&sbi->ll_root_fid));
2148
2149         root = llu_iget(fs, &md);
2150         if (!root || IS_ERR(root)) {
2151                 CERROR("fail to generate root inode\n");
2152                 GOTO(out_request, err = -EBADF);
2153         }
2154
2155         /*
2156          * Generate base path-node for root.
2157          */
2158         rootpb = _sysio_pb_new(&noname, NULL, root);
2159         if (!rootpb) {
2160                 err = -ENOMEM;
2161                 goto out_inode;
2162         }
2163
2164         err = _sysio_do_mount(fs, rootpb, flags, tocover, mntp);
2165         if (err) {
2166                 _sysio_pb_gone(rootpb);
2167                 goto out_inode;
2168         }
2169
2170         ptlrpc_req_finished(request);
2171
2172         CDEBUG(D_SUPER, "LibLustre: %s mounted successfully!\n", source);
2173         liblustre_wait_idle();
2174
2175         return 0;
2176
2177 out_inode:
2178         _sysio_i_gone(root);
2179 out_request:
2180         ptlrpc_req_finished(request);
2181 out_dt:
2182         obd_disconnect(sbi->ll_dt_exp);
2183 out_md:
2184         obd_disconnect(sbi->ll_md_exp);
2185 out_free:
2186         if (osc)
2187                 OBD_FREE(osc, strlen(osc) + 1);
2188         if (mdc)
2189                 OBD_FREE(mdc, strlen(mdc) + 1);
2190         OBD_FREE(sbi, sizeof(*sbi));
2191         liblustre_wait_idle();
2192         return err;
2193 }
2194
2195 struct fssw_ops llu_fssw_ops = {
2196         llu_fsswop_mount
2197 };
2198
2199 static struct inode_ops llu_inode_ops = {
2200         inop_lookup:    llu_iop_lookup,
2201         inop_getattr:   llu_iop_getattr,
2202         inop_setattr:   llu_iop_setattr,
2203         inop_filldirentries:     llu_iop_filldirentries,
2204         inop_mkdir:     llu_iop_mkdir_raw,
2205         inop_rmdir:     llu_iop_rmdir_raw,
2206         inop_symlink:   llu_iop_symlink_raw,
2207         inop_readlink:  llu_iop_readlink,
2208         inop_open:      llu_iop_open,
2209         inop_close:     llu_iop_close,
2210         inop_link:      llu_iop_link_raw,
2211         inop_unlink:    llu_iop_unlink_raw,
2212         inop_rename:    llu_iop_rename_raw,
2213         inop_pos:       llu_iop_pos,
2214         inop_read:      llu_iop_read,
2215         inop_write:     llu_iop_write,
2216         inop_iodone:    llu_iop_iodone,
2217         inop_fcntl:     llu_iop_fcntl,
2218         inop_sync:      llu_iop_sync,
2219         inop_datasync:  llu_iop_datasync,
2220         inop_ioctl:     llu_iop_ioctl,
2221         inop_mknod:     llu_iop_mknod_raw,
2222 #ifdef _HAVE_STATVFS
2223         inop_statvfs:   llu_iop_statvfs,
2224 #endif
2225         inop_gone:      llu_iop_gone,
2226 };