lustre/llite/llite_lib.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, 2003 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 <linux/module.h>
  27 #include <linux/types.h>
  28 #include <linux/random.h>
  29 #include <linux/version.h>
  30
  31 #include <linux/lustre_lite.h>
  32 #include <linux/lustre_ha.h>
  33 #include <linux/lustre_dlm.h>
  34 #include <linux/lprocfs_status.h>
  35 #include <linux/lustre_acl.h>
  36 #include "llite_internal.h"
  37
  38 kmem_cache_t *ll_file_data_slab;
  39 kmem_cache_t *ll_intent_slab;
  40
  41 extern struct address_space_operations ll_aops;
  42 extern struct address_space_operations ll_dir_aops;
  43
  44 #ifndef log2
  45 #define log2(n) ffz(~(n))
  46 #endif
  47
  48 struct ll_sb_info *lustre_init_sbi(struct super_block *sb)
  49 {
  50         struct ll_sb_info *sbi = NULL;
  51         class_uuid_t uuid;
  52         ENTRY;
  53
  54         OBD_ALLOC(sbi, sizeof(*sbi));
  55         if (!sbi)
  56                 RETURN(NULL);
  57
  58         spin_lock_init(&sbi->ll_lock);
  59         INIT_LIST_HEAD(&sbi->ll_pglist);
  60         sbi->ll_pglist_gen = 0;
  61         if (num_physpages < SBI_DEFAULT_RA_MAX / 4)
  62                 sbi->ll_ra_info.ra_max_pages = num_physpages / 4;
  63         else
  64                 sbi->ll_ra_info.ra_max_pages = SBI_DEFAULT_RA_MAX;
  65         INIT_LIST_HEAD(&sbi->ll_conn_chain);
  66         INIT_HLIST_HEAD(&sbi->ll_orphan_dentry_list);
  67         INIT_LIST_HEAD(&sbi->ll_mnt_list);
  68
  69         sema_init(&sbi->ll_gns_sem, 1);
  70         spin_lock_init(&sbi->ll_gns_lock);
  71         INIT_LIST_HEAD(&sbi->ll_gns_sbi_head);
  72         init_waitqueue_head(&sbi->ll_gns_waitq);
  73         init_completion(&sbi->ll_gns_mount_finished);
  74
  75         /* this later may be reset via /proc/fs/... */
  76         memcpy(sbi->ll_gns_oname, ".mntinfo", strlen(".mntinfo"));
  77         sbi->ll_gns_oname[strlen(sbi->ll_gns_oname)] = '\0';
  78
  79         /* this later may be reset via /proc/fs/... */
  80         memcpy(sbi->ll_gns_upcall, "/usr/sbin/gns_upcall",
  81                strlen("/usr/sbin/gns_upcall"));
  82         sbi->ll_gns_upcall[strlen(sbi->ll_gns_upcall)] = '\0';
  83
  84         /* default values, may be changed via /proc/fs/... */
  85         sbi->ll_gns_state = LL_GNS_IDLE;
  86         atomic_set(&sbi->ll_gns_enabled, 1);
  87         sbi->ll_gns_tick = GNS_TICK_TIMEOUT;
  88         sbi->ll_gns_timeout = GNS_MOUNT_TIMEOUT;
  89
  90         sbi->ll_gns_timer.data = (unsigned long)sbi;
  91         sbi->ll_gns_timer.function = ll_gns_timer_callback;
  92         init_timer(&sbi->ll_gns_timer);
  93
  94         ll_set_sbi(sb, sbi);
  95
  96         generate_random_uuid(uuid);
  97         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
  98         RETURN(sbi);
  99 }
 100
 101 void lustre_free_sbi(struct super_block *sb)
 102 {
 103         struct ll_sb_info *sbi = ll_s2sbi(sb);
 104         ENTRY;
 105
 106         if (sbi != NULL) {
 107                 list_del(&sbi->ll_gns_sbi_head);
 108                 del_timer(&sbi->ll_gns_timer);
 109                 OBD_FREE(sbi, sizeof(*sbi));
 110         }
 111         ll_set_sbi(sb, NULL);
 112         EXIT;
 113 }
 114
 115 int lustre_init_dt_desc(struct ll_sb_info *sbi)
 116 {
 117         int valsize, rc;
 118         ENTRY;
 119
 120         valsize = sizeof(sbi->ll_dt_desc);
 121         memset(&sbi->ll_dt_desc, 0, sizeof(sbi->ll_dt_desc));
 122         rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 123                           "lovdesc", &valsize, &sbi->ll_dt_desc);
 124         RETURN(rc);
 125 }
 126
 127 extern struct dentry_operations ll_d_ops;
 128
 129 int lustre_common_fill_super(struct super_block *sb, char *lmv, char *lov,
 130                              int async, char *security, __u32 *nllu,
 131                              __u64 *remote)
 132 {
 133         struct ll_sb_info *sbi = ll_s2sbi(sb);
 134         struct ptlrpc_request *request = NULL;
 135         struct lustre_handle dt_conn = {0, };
 136         struct lustre_handle md_conn = {0, };
 137         struct obd_connect_data *data;
 138         struct inode *root = NULL;
 139         struct obd_device *obd;
 140         struct obd_statfs osfs;
 141         struct lustre_md md;
 142         kdev_t devno;
 143         int err;
 144         __u32 valsize;
 145         ENTRY;
 146
 147         obd = class_name2obd(lmv);
 148         if (!obd) {
 149                 CERROR("MDC %s: not setup or attached\n", lmv);
 150                 RETURN(-EINVAL);
 151         }
 152         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 153                      sizeof(async), &async);
 154
 155         if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
 156             (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
 157                 CERROR("wrong remote flag "LPX64"\n", *remote);
 158                 RETURN(-EINVAL);
 159         }
 160
 161         OBD_ALLOC(data, sizeof(*data));
 162         if (!data)
 163                 RETURN(-ENOMEM);
 164
 165         data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
 166                                               OBD_CONNECT_REMOTE);
 167         memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
 168
 169         if (security == NULL)
 170                 security = "null";
 171
 172         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 173                            strlen(security), security);
 174         if (err) {
 175                 CERROR("LMV %s: failed to set security %s, err %d\n",
 176                         lmv, security, err);
 177                 OBD_FREE(data, sizeof(*data));
 178                 RETURN(err);
 179         }
 180
 181         if (proc_lustre_fs_root) {
 182                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 183                                                   lov, lmv);
 184                 if (err < 0)
 185                         CERROR("could not register mount in /proc/lustre");
 186         }
 187
 188         err = obd_connect(&md_conn, obd, &sbi->ll_sb_uuid, data,
 189                           OBD_OPT_REAL_CLIENT);
 190         if (err == -EBUSY) {
 191                 CERROR("An MDS (lmv %s) is performing recovery, of which this"
 192                        " client is not a part.  Please wait for recovery to "
 193                        "complete, abort, or time out.\n", lmv);
 194                 GOTO(out, err);
 195         } else if (err) {
 196                 CERROR("cannot connect to %s: rc = %d\n", lmv, err);
 197                 GOTO(out, err);
 198         }
 199         sbi->ll_md_exp = class_conn2export(&md_conn);
 200         err = obd_statfs(obd, &osfs, jiffies - HZ);
 201         if (err)
 202                 GOTO(out_lmv, err);
 203
 204         if (!osfs.os_bsize) {
 205                 CERROR("Invalid block size is detected.");
 206                 GOTO(out_lmv, err);
 207         }
 208
 209         sb->s_magic = LL_SUPER_MAGIC;
 210         sb->s_blocksize = osfs.os_bsize;
 211         sb->s_blocksize_bits = log2(osfs.os_bsize);
 212         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 213
 214         devno = get_uuid2int(sbi->ll_md_exp->exp_obd->obd_uuid.uuid,
 215                              strlen(sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
 216
 217         sb->s_dev = devno;
 218
 219         /* after statfs, we are supposed to have connected to MDSs,
 220          * so it's ok to check remote flag returned.
 221          */
 222         valsize = sizeof(&sbi->ll_remote);
 223         err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
 224                            &valsize, &sbi->ll_remote);
 225         if (err) {
 226                 CERROR("fail to obtain remote flag\n");
 227                 GOTO(out, err);
 228         }
 229
 230         obd = class_name2obd(lov);
 231         if (!obd) {
 232                 CERROR("OSC %s: not setup or attached\n", lov);
 233                 GOTO(out_lmv, err);
 234         }
 235         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 236                      sizeof(async), &async);
 237
 238         err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data,
 239                           OBD_OPT_REAL_CLIENT);
 240         if (err == -EBUSY) {
 241                 CERROR("An OST (lov %s) is performing recovery, of which this"
 242                        " client is not a part.  Please wait for recovery to "
 243                        "complete, abort, or time out.\n", lov);
 244                 GOTO(out, err);
 245         } else if (err) {
 246                 CERROR("cannot connect to %s: rc = %d\n", lov, err);
 247                 GOTO(out_lmv, err);
 248         }
 249         sbi->ll_dt_exp = class_conn2export(&dt_conn);
 250
 251         err = lustre_init_dt_desc(sbi);
 252         if (err == 0) {
 253                 int mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 254                 obd_init_ea_size(sbi->ll_md_exp, mdsize,
 255                                  sbi->ll_dt_desc.ld_tgt_count *
 256                                  sizeof(struct llog_cookie));
 257         }
 258
 259         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
 260         if (err) {
 261                 CERROR("cannot mds_connect: rc = %d\n", err);
 262                 GOTO(out_lov, err);
 263         }
 264         CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 265
 266         sb->s_op = &lustre_super_operations;
 267
 268         /* make root inode
 269          * XXX: move this to after cbd setup? */
 270         err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
 271                          (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID), NULL, 0,
 272                          0, &request);
 273         if (err) {
 274                 CERROR("md_getattr failed for root: rc = %d\n", err);
 275                 GOTO(out_lov, err);
 276         }
 277
 278         err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
 279                                 sbi->ll_dt_exp, &md);
 280         if (err) {
 281                 CERROR("failed to understand root inode md: rc = %d\n", err);
 282                 ptlrpc_req_finished(request);
 283                 GOTO(out_lov, err);
 284         }
 285
 286         LASSERT(id_ino(&sbi->ll_rootid) != 0);
 287         root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 288
 289         ptlrpc_req_finished(request);
 290
 291         if (root == NULL || is_bad_inode(root)) {
 292                 CERROR("lustre_lite: bad iget4 for root\n");
 293                 GOTO(out_root, err = -EBADF);
 294         }
 295
 296         err = ll_close_thread_start(&sbi->ll_lcq);
 297         if (err) {
 298                 CERROR("cannot start close thread: rc %d\n", err);
 299                 GOTO(out_root, err);
 300         }
 301
 302         ll_gns_add_timer(sbi);
 303
 304         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
 305            backing dev info assigned to inode mapping is used for
 306            determining maximal readahead. */
 307 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
 308     !defined(KERNEL_HAS_AS_MAX_READAHEAD)
 309         /* bug 2805 - set VM readahead to zero */
 310         vm_max_readahead = vm_min_readahead = 0;
 311 #endif
 312
 313         sb->s_root = d_alloc_root(root);
 314         sb->s_root->d_op = &ll_d_ops;
 315
 316         sb->s_flags |= MS_POSIXACL;
 317 #ifdef S_PDIROPS
 318         CWARN("Enabling PDIROPS\n");
 319         sb->s_flags |= S_PDIROPS;
 320 #endif
 321
 322         if (data != NULL)
 323                 OBD_FREE(data, sizeof(*data));
 324         RETURN(err);
 325 out_root:
 326         if (root)
 327                 iput(root);
 328 out_lov:
 329         obd_disconnect(sbi->ll_dt_exp, 0);
 330 out_lmv:
 331         obd_disconnect(sbi->ll_md_exp, 0);
 332 out:
 333         if (data != NULL)
 334                 OBD_FREE(data, sizeof(*data));
 335         lprocfs_unregister_mountpoint(sbi);
 336         return err;
 337 }
 338
 339 void lustre_common_put_super(struct super_block *sb)
 340 {
 341         struct ll_sb_info *sbi = ll_s2sbi(sb);
 342         struct hlist_node *tmp, *next;
 343         ENTRY;
 344
 345         ll_gns_del_timer(sbi);
 346         ll_close_thread_shutdown(sbi->ll_lcq);
 347
 348         list_del(&sbi->ll_conn_chain);
 349         obd_disconnect(sbi->ll_dt_exp, 0);
 350
 351         lprocfs_unregister_mountpoint(sbi);
 352         if (sbi->ll_proc_root) {
 353                 lprocfs_remove(sbi->ll_proc_root);
 354                 sbi->ll_proc_root = NULL;
 355         }
 356
 357         obd_disconnect(sbi->ll_md_exp, 0);
 358
 359         // We do this to get rid of orphaned dentries. That is not really trw.
 360         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
 361                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
 362                 CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
 363                       dentry->d_name.len, dentry->d_name.name, dentry, next);
 364                 shrink_dcache_parent(dentry);
 365         }
 366         EXIT;
 367 }
 368
 369 char *ll_read_opt(const char *opt, char *data)
 370 {
 371         char *value;
 372         char *retval;
 373         ENTRY;
 374
 375         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 376         if (strncmp(opt, data, strlen(opt)))
 377                 RETURN(NULL);
 378         if ((value = strchr(data, '=')) == NULL)
 379                 RETURN(NULL);
 380
 381         value++;
 382         OBD_ALLOC(retval, strlen(value) + 1);
 383         if (!retval) {
 384                 CERROR("out of memory!\n");
 385                 RETURN(NULL);
 386         }
 387
 388         memcpy(retval, value, strlen(value)+1);
 389         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 390         RETURN(retval);
 391 }
 392
 393 int ll_set_opt(const char *opt, char *data, int fl)
 394 {
 395         ENTRY;
 396
 397         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 398         if (strncmp(opt, data, strlen(opt)))
 399                 RETURN(0);
 400         else
 401                 RETURN(fl);
 402 }
 403
 404 void ll_options(char *options, char **lov, char **lmv, char **sec,
 405                 int *async, int *flags)
 406 {
 407         char *this_char;
 408 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 409         char *opt_ptr = options;
 410 #endif
 411         ENTRY;
 412
 413         if (!options) {
 414                 EXIT;
 415                 return;
 416         }
 417
 418         *async = 0;
 419 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 420         for (this_char = strtok (options, ",");
 421              this_char != NULL;
 422              this_char = strtok (NULL, ",")) {
 423 #else
 424         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 425 #endif
 426                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
 427                 if (!*lov && (*lov = ll_read_opt("osc", this_char)))
 428                         continue;
 429                 if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
 430                         continue;
 431                 if (!strncmp(this_char, "lasync", strlen("lasync"))) {
 432                         *async = 1;
 433                         continue;
 434                 }
 435                 if (!*sec && (*sec = ll_read_opt("sec", this_char)))
 436                         continue;
 437                 if (!(*flags & LL_SBI_NOLCK) &&
 438                     ((*flags) = (*flags) |
 439                                 ll_set_opt("nolock", this_char,
 440                                            LL_SBI_NOLCK)))
 441                         continue;
 442         }
 443
 444         EXIT;
 445 }
 446
 447 void ll_lli_init(struct ll_inode_info *lli)
 448 {
 449         sema_init(&lli->lli_open_sem, 1);
 450         sema_init(&lli->lli_size_sem, 1);
 451         lli->lli_flags = 0;
 452         lli->lli_size_pid = 0;
 453         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 454         spin_lock_init(&lli->lli_lock);
 455         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
 456         lli->lli_inode_magic = LLI_INODE_MAGIC;
 457         memset(&lli->lli_id, 0, sizeof(lli->lli_id));
 458         sema_init(&lli->lli_och_sem, 1);
 459         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
 460         lli->lli_mds_exec_och = NULL;
 461         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
 462         lli->lli_open_fd_exec_count = 0;
 463 }
 464
 465 int ll_fill_super(struct super_block *sb, void *data, int silent)
 466 {
 467         struct ll_sb_info *sbi;
 468         char *lov = NULL;
 469         char *lmv = NULL;
 470         int async, err;
 471         char *sec = NULL;
 472         __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
 473         __u64 remote_flag = 0;
 474         ENTRY;
 475
 476         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 477
 478         sbi = lustre_init_sbi(sb);
 479         if (!sbi)
 480                 RETURN(-ENOMEM);
 481
 482         sbi->ll_flags |= LL_SBI_READAHEAD;
 483         ll_options(data, &lov, &lmv, &sec, &async, &sbi->ll_flags);
 484
 485         if (!lov) {
 486                 CERROR("no osc\n");
 487                 GOTO(out, err = -EINVAL);
 488         }
 489
 490         if (!lmv) {
 491                 CERROR("no mdc\n");
 492                 GOTO(out, err = -EINVAL);
 493         }
 494
 495         err = lustre_common_fill_super(sb, lmv, lov, async, sec, nllu,
 496                                        &remote_flag);
 497         EXIT;
 498 out:
 499         if (err)
 500                 lustre_free_sbi(sb);
 501
 502         if (sec)
 503                 OBD_FREE(sec, strlen(sec) + 1);
 504         if (lmv)
 505                 OBD_FREE(lmv, strlen(lmv) + 1);
 506         if (lov)
 507                 OBD_FREE(lov, strlen(lov) + 1);
 508         return err;
 509 } /* ll_read_super */
 510
 511 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
 512                               struct config_llog_instance *cfg, int allow_recov)
 513 {
 514         struct lustre_cfg lcfg;
 515         struct portals_cfg pcfg;
 516         char *peer = "MDS_PEER_UUID";
 517         struct obd_device *obd;
 518         struct lustre_handle md_conn = {0, };
 519         struct obd_export *exp;
 520         char *name = "mdc_dev";
 521         class_uuid_t uuid;
 522         struct obd_uuid lmv_uuid;
 523         struct llog_ctxt *ctxt;
 524         int rc = 0, err = 0;
 525         ENTRY;
 526
 527         if (lmd_bad_magic(lmd))
 528                 RETURN(-EINVAL);
 529
 530         generate_random_uuid(uuid);
 531         class_uuid_unparse(uuid, &lmv_uuid);
 532
 533         if (lmd->lmd_local_nid) {
 534                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
 535                 pcfg.pcfg_nal = lmd->lmd_nal;
 536                 pcfg.pcfg_nid = lmd->lmd_local_nid;
 537                 rc = libcfs_nal_cmd(&pcfg);
 538                 if (rc < 0)
 539                         GOTO(out, rc);
 540         }
 541
 542         if (lmd->lmd_nal == SOCKNAL ||
 543             lmd->lmd_nal == OPENIBNAL ||
 544             lmd->lmd_nal == IIBNAL ||
 545             lmd->lmd_nal == VIBNAL ||
 546             lmd->lmd_nal == RANAL) {
 547                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
 548                 pcfg.pcfg_nal     = lmd->lmd_nal;
 549                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 550                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
 551                 pcfg.pcfg_misc    = lmd->lmd_port;
 552                 rc = libcfs_nal_cmd(&pcfg);
 553                 if (rc < 0)
 554                         GOTO(out, rc);
 555         }
 556
 557         LCFG_INIT(lcfg, LCFG_ADD_UUID, name);
 558         lcfg.lcfg_nid = lmd->lmd_server_nid;
 559         lcfg.lcfg_inllen1 = strlen(peer) + 1;
 560         lcfg.lcfg_inlbuf1 = peer;
 561         lcfg.lcfg_nal = lmd->lmd_nal;
 562         rc = class_process_config(&lcfg);
 563         if (rc < 0)
 564                 GOTO(out_del_conn, rc);
 565
 566         LCFG_INIT(lcfg, LCFG_ATTACH, name);
 567         lcfg.lcfg_inlbuf1 = "mdc";
 568         lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
 569         lcfg.lcfg_inlbuf2 = lmv_uuid.uuid;
 570         lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
 571         err = class_process_config(&lcfg);
 572         if (rc < 0)
 573                 GOTO(out_del_uuid, rc);
 574
 575         LCFG_INIT(lcfg, LCFG_SETUP, name);
 576         lcfg.lcfg_inlbuf1 = lmd->lmd_mds;
 577         lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
 578         lcfg.lcfg_inlbuf2 = peer;
 579         lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
 580         rc = class_process_config(&lcfg);
 581         if (rc < 0)
 582                 GOTO(out_detach, rc);
 583
 584         obd = class_name2obd(name);
 585         if (obd == NULL)
 586                 GOTO(out_cleanup, rc = -EINVAL);
 587
 588         rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 589                           strlen(lmd->lmd_security), lmd->lmd_security);
 590         if (rc)
 591                 GOTO(out_cleanup, rc);
 592
 593         /* Disable initial recovery on this import */
 594         rc = obd_set_info(obd->obd_self_export,
 595                           strlen("initial_recov"), "initial_recov",
 596                           sizeof(allow_recov), &allow_recov);
 597         if (rc)
 598                 GOTO(out_cleanup, rc);
 599
 600         rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, 0);
 601         if (rc) {
 602                 CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
 603                 GOTO(out_cleanup, rc);
 604         }
 605
 606         exp = class_conn2export(&md_conn);
 607
 608         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
 609         rc = class_config_process_llog(ctxt, profile, cfg);
 610         if (rc)
 611                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 612
 613         err = obd_disconnect(exp, 0);
 614
 615         EXIT;
 616 out_cleanup:
 617         LCFG_INIT(lcfg, LCFG_CLEANUP, name);
 618         err = class_process_config(&lcfg);
 619         if (err < 0)
 620                 GOTO(out, err);
 621
 622 out_detach:
 623         LCFG_INIT(lcfg, LCFG_DETACH, name);
 624         err = class_process_config(&lcfg);
 625         if (err < 0)
 626                 GOTO(out, err);
 627
 628 out_del_uuid:
 629         LCFG_INIT(lcfg, LCFG_DEL_UUID, name);
 630         lcfg.lcfg_inllen1 = strlen(peer) + 1;
 631         lcfg.lcfg_inlbuf1 = peer;
 632         err = class_process_config(&lcfg);
 633
 634 out_del_conn:
 635         if (lmd->lmd_nal == SOCKNAL ||
 636             lmd->lmd_nal == OPENIBNAL ||
 637             lmd->lmd_nal == IIBNAL ||
 638             lmd->lmd_nal == VIBNAL ||
 639             lmd->lmd_nal == RANAL) {
 640                 int err2;
 641
 642                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
 643                 pcfg.pcfg_nal     = lmd->lmd_nal;
 644                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 645                 pcfg.pcfg_flags   = 1;          /* single_share */
 646                 err2 = libcfs_nal_cmd(&pcfg);
 647                 if (err2 && !err)
 648                         err = err2;
 649                 if (err < 0)
 650                         GOTO(out, err);
 651         }
 652 out:
 653         if (rc == 0)
 654                 rc = err;
 655
 656         return rc;
 657 }
 658
 659 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 660 {
 661         struct lustre_cfg lcfg;
 662         struct obd_device *obd;
 663         int next = 0;
 664
 665         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 666         {
 667                 int err;
 668
 669                 LCFG_INIT(lcfg, LCFG_CLEANUP, obd->obd_name);
 670                 err = class_process_config(&lcfg);
 671                 if (err) {
 672                         CERROR("cleanup failed: %s\n", obd->obd_name);
 673                         //continue;
 674                 }
 675
 676                 LCFG_INIT(lcfg, LCFG_DETACH, obd->obd_name);
 677                 err = class_process_config(&lcfg);
 678                 if (err) {
 679                         CERROR("detach failed: %s\n", obd->obd_name);
 680                         //continue;
 681                 }
 682         }
 683
 684         if (sbi->ll_lmd != NULL)
 685                 class_del_profile(sbi->ll_lmd->lmd_profile);
 686 }
 687
 688 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 689 {
 690         struct lustre_mount_data * lmd = data;
 691         char *lov = NULL, *lmv = NULL;
 692         struct ll_sb_info *sbi;
 693         int err;
 694         ENTRY;
 695
 696         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 697         if (lmd_bad_magic(lmd))
 698                 RETURN(-EINVAL);
 699
 700         sbi = lustre_init_sbi(sb);
 701         if (!sbi)
 702                 RETURN(-ENOMEM);
 703
 704         sbi->ll_flags |= LL_SBI_READAHEAD;
 705
 706         if (lmd->lmd_profile) {
 707                 struct lustre_profile *lprof;
 708                 struct config_llog_instance cfg;
 709                 int len;
 710
 711                 if (lmd->lmd_mds[0] == '\0') {
 712                         CERROR("no mds name\n");
 713                         GOTO(out_free, err = -EINVAL);
 714                 }
 715                 lmd->lmd_security[sizeof(lmd->lmd_security) - 1] = 0;
 716
 717                 OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 718                 if (sbi->ll_lmd == NULL)
 719                         GOTO(out_free, err = -ENOMEM);
 720                 memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
 721
 722                 /* generate a string unique to this super, let's try
 723                  the address of the super itself.*/
 724                 len = (sizeof(sb) * 2) + 1;
 725                 OBD_ALLOC(sbi->ll_instance, len);
 726                 if (sbi->ll_instance == NULL)
 727                         GOTO(out_free, err = -ENOMEM);
 728                 sprintf(sbi->ll_instance, "%p", sb);
 729
 730                 cfg.cfg_instance = sbi->ll_instance;
 731                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 732                 cfg.cfg_local_nid = lmd->lmd_local_nid;
 733                 err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
 734                 if (err < 0) {
 735                         CERROR("Unable to process log: %s\n", lmd->lmd_profile);
 736                         GOTO(out_free, err);
 737                 }
 738
 739                 lprof = class_get_profile(lmd->lmd_profile);
 740                 if (lprof == NULL) {
 741                         CERROR("No profile found: %s\n", lmd->lmd_profile);
 742                         GOTO(out_free, err = -EINVAL);
 743                 }
 744                 if (lov)
 745                         OBD_FREE(lov, strlen(lov) + 1);
 746                 OBD_ALLOC(lov, strlen(lprof->lp_lov) +
 747                           strlen(sbi->ll_instance) + 2);
 748                 sprintf(lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
 749
 750                 if (lmv)
 751                         OBD_FREE(lmv, strlen(lmv) + 1);
 752                 OBD_ALLOC(lmv, strlen(lprof->lp_lmv) +
 753                           strlen(sbi->ll_instance) + 2);
 754                 sprintf(lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
 755         }
 756
 757         if (!lov) {
 758                 CERROR("no osc\n");
 759                 GOTO(out_free, err = -EINVAL);
 760         }
 761
 762         if (!lmv) {
 763                 CERROR("no mdc\n");
 764                 GOTO(out_free, err = -EINVAL);
 765         }
 766
 767         err = lustre_common_fill_super(sb, lmv, lov, lmd->lmd_async,
 768                                        lmd->lmd_security, &lmd->lmd_nllu,
 769                                        &lmd->lmd_remote_flag);
 770
 771         if (err)
 772                 GOTO(out_free, err);
 773
 774 out_dev:
 775         if (lmv)
 776                 OBD_FREE(lmv, strlen(lmv) + 1);
 777         if (lov)
 778                 OBD_FREE(lov, strlen(lov) + 1);
 779
 780         RETURN(err);
 781
 782 out_free:
 783         if (sbi->ll_lmd) {
 784                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 785                 int err;
 786
 787                 if (sbi->ll_instance != NULL) {
 788                         struct lustre_mount_data *lmd = sbi->ll_lmd;
 789                         struct config_llog_instance cfg;
 790                         char *cl_prof;
 791
 792                         cfg.cfg_instance = sbi->ll_instance;
 793                         cfg.cfg_uuid = sbi->ll_sb_uuid;
 794
 795                         OBD_ALLOC(cl_prof, len);
 796                         sprintf(cl_prof, "%s-clean", lmd->lmd_profile);
 797                         err = lustre_process_log(lmd, cl_prof, &cfg, 0);
 798                         if (err < 0) {
 799                                 CERROR("Unable to process log: %s\n", cl_prof);
 800                                 lustre_manual_cleanup(sbi);
 801                         }
 802                         OBD_FREE(cl_prof, len);
 803                         OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 804                 }
 805                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 806         }
 807         lustre_free_sbi(sb);
 808         goto out_dev;
 809 } /* lustre_fill_super */
 810
 811 void lustre_put_super(struct super_block *sb)
 812 {
 813         struct obd_device *obd;
 814         struct ll_sb_info *sbi = ll_s2sbi(sb);
 815         int force_umount = 0;
 816         ENTRY;
 817
 818         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 819         obd = class_exp2obd(sbi->ll_md_exp);
 820         if (obd)
 821                 force_umount = obd->obd_no_recov;
 822         obd = NULL;
 823
 824         lustre_common_put_super(sb);
 825         if (sbi->ll_lmd != NULL) {
 826                 char *cl_prof;
 827                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 828                 int err;
 829                 struct config_llog_instance cfg;
 830
 831                 if (force_umount) {
 832                         CERROR("force umount, doing manual cleanup\n");
 833                         lustre_manual_cleanup(sbi);
 834                         GOTO(free_lmd, 0);
 835                 }
 836
 837                 cfg.cfg_instance = sbi->ll_instance;
 838                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 839
 840                 OBD_ALLOC(cl_prof, len);
 841                 sprintf(cl_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
 842                 err = lustre_process_log(sbi->ll_lmd, cl_prof, &cfg, 0);
 843                 if (err < 0) {
 844                         CERROR("Unable to process log: %s, doing manual cleanup"
 845                                "\n", cl_prof);
 846                         lustre_manual_cleanup(sbi);
 847                 }
 848
 849                 OBD_FREE(cl_prof, len);
 850         free_lmd:
 851                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 852                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 853         }
 854
 855         lustre_free_sbi(sb);
 856
 857         EXIT;
 858 } /* lustre_put_super */
 859
 860 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 861 {
 862         struct obd_export *md_exp = sbi->ll_md_exp;
 863         struct lustre_mount_data *lmd = sbi->ll_lmd;
 864         struct llog_ctxt *ctxt;
 865         struct config_llog_instance cfg;
 866         char *profile = lmd->lmd_profile, *name = NULL;
 867         int rc, namelen =  0, version;
 868         ENTRY;
 869
 870         if (profile == NULL)
 871                 RETURN(0);
 872         if (lmd == NULL) {
 873                 CERROR("Client not mounted with zero-conf; cannot process "
 874                        "update log.\n");
 875                 RETURN(0);
 876         }
 877
 878         rc = ldlm_cli_cancel_unused(md_exp->exp_obd->obd_namespace, NULL,
 879                                     LDLM_FL_CONFIG_CHANGE, NULL);
 880         if (rc != 0)
 881                 CWARN("ldlm_cli_cancel_unused(mdc): %d\n", rc);
 882
 883         rc = obd_cancel_unused(sbi->ll_dt_exp, NULL, LDLM_FL_CONFIG_CHANGE,
 884                                NULL);
 885         if (rc != 0)
 886                 CWARN("obd_cancel_unused(lov): %d\n", rc);
 887
 888         cfg.cfg_instance = sbi->ll_instance;
 889         cfg.cfg_uuid = sbi->ll_sb_uuid;
 890         cfg.cfg_local_nid = lmd->lmd_local_nid;
 891
 892         namelen = strlen(profile) + 20; /* -clean-######### */
 893         OBD_ALLOC(name, namelen);
 894         if (name == NULL)
 895                 RETURN(-ENOMEM);
 896
 897         if (clean) {
 898                 version = sbi->ll_config_version - 1;
 899                 sprintf(name, "%s-clean-%d", profile, version);
 900         } else {
 901                 version = sbi->ll_config_version + 1;
 902                 sprintf(name, "%s-%d", profile, version);
 903         }
 904
 905         CWARN("Applying configuration log %s\n", name);
 906
 907         ctxt = llog_get_context(&md_exp->exp_obd->obd_llogs,
 908                                 LLOG_CONFIG_REPL_CTXT);
 909         rc = class_config_process_llog(ctxt, name, &cfg);
 910         if (rc == 0)
 911                 sbi->ll_config_version = version;
 912         CWARN("Finished applying configuration log %s: %d\n", name, rc);
 913
 914         if (rc == 0 && clean == 0) {
 915                 struct lov_desc desc;
 916                 int rc, valsize;
 917                 valsize = sizeof(desc);
 918                 rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 919                                   "lovdesc", &valsize, &desc);
 920
 921                 rc = obd_init_ea_size(md_exp,
 922                                       obd_size_diskmd(sbi->ll_dt_exp, NULL),
 923                                       (desc.ld_tgt_count *
 924                                        sizeof(struct llog_cookie)));
 925         }
 926         OBD_FREE(name, namelen);
 927         RETURN(rc);
 928 }
 929
 930 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 931 {
 932         struct inode *inode = NULL;
 933         l_lock(&lock->l_resource->lr_namespace->ns_lock);
 934         if (lock->l_ast_data) {
 935                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
 936                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
 937                         inode = igrab(lock->l_ast_data);
 938                 } else {
 939                         inode = lock->l_ast_data;
 940                         CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
 941                                "l_ast_data %p is bogus: magic %0x8\n",
 942                                lock->l_ast_data, lli->lli_inode_magic);
 943                         inode = NULL;
 944                 }
 945         }
 946         l_unlock(&lock->l_resource->lr_namespace->ns_lock);
 947         return inode;
 948 }
 949
 950 int null_if_equal(struct ldlm_lock *lock, void *data)
 951 {
 952         if (data == lock->l_ast_data) {
 953                 lock->l_ast_data = NULL;
 954
 955                 if (lock->l_req_mode != lock->l_granted_mode)
 956                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
 957         }
 958
 959         return LDLM_ITER_CONTINUE;
 960 }
 961
 962 void ll_clear_inode(struct inode *inode)
 963 {
 964         struct lustre_id id;
 965         struct ll_inode_info *lli = ll_i2info(inode);
 966         struct ll_sb_info *sbi = ll_i2sbi(inode);
 967         ENTRY;
 968
 969         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
 970                inode->i_generation, inode);
 971
 972         lli->lli_inode_magic = LLI_INODE_DEAD;
 973         ll_inode2id(&id, inode);
 974
 975         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
 976         md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
 977
 978         LASSERT(!lli->lli_open_fd_write_count);
 979         LASSERT(!lli->lli_open_fd_read_count);
 980         LASSERT(!lli->lli_open_fd_exec_count);
 981
 982         if (lli->lli_mds_write_och)
 983                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
 984         if (lli->lli_mds_exec_och)
 985                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
 986         if (lli->lli_mds_read_och)
 987                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
 988
 989         if (lli->lli_smd)
 990                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
 991                                   null_if_equal, inode);
 992
 993         if (lli->lli_smd) {
 994                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
 995                 lli->lli_smd = NULL;
 996         }
 997
 998         if (lli->lli_mea) {
 999                 obd_free_memmd(sbi->ll_md_exp,
1000                                (struct lov_stripe_md **) &lli->lli_mea);
1001                 lli->lli_mea = NULL;
1002         }
1003
1004         if (lli->lli_symlink_name) {
1005                 OBD_FREE(lli->lli_symlink_name,
1006                          strlen(lli->lli_symlink_name) + 1);
1007                 lli->lli_symlink_name = NULL;
1008         }
1009         lli->lli_inode_magic = LLI_INODE_DEAD;
1010
1011         EXIT;
1012 }
1013
1014 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1015  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1016  * keep these values until such a time that objects are allocated for it.
1017  * We do the MDS operations first, as it is checking permissions for us.
1018  * We don't to the MDS RPC if there is nothing that we want to store there,
1019  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1020  * going to do an RPC anyways.
1021  *
1022  * If we are doing a truncate, we will send the mtime and ctime updates
1023  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1024  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1025  * at the same time.
1026  */
1027 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1028 {
1029         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1030         struct ll_sb_info *sbi = ll_i2sbi(inode);
1031         struct ptlrpc_request *request = NULL;
1032         struct mdc_op_data *op_data;
1033         int ia_valid = attr->ia_valid;
1034         int err, rc = 0;
1035         ENTRY;
1036
1037         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
1038         lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_SETATTR);
1039
1040         if (ia_valid & ATTR_SIZE) {
1041                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1042                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1043                                attr->ia_size, ll_file_maxbytes(inode));
1044                         RETURN(-EFBIG);
1045                 }
1046
1047                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1048         }
1049
1050         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1051         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1052                 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1053                         RETURN(-EPERM);
1054         }
1055
1056         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1057         if (attr->ia_valid & ATTR_CTIME) {
1058                 attr->ia_ctime = CURRENT_TIME;
1059                 attr->ia_valid |= ATTR_CTIME_SET;
1060         }
1061         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1062                 attr->ia_atime = CURRENT_TIME;
1063                 attr->ia_valid |= ATTR_ATIME_SET;
1064         }
1065         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1066                 attr->ia_mtime = CURRENT_TIME;
1067                 attr->ia_valid |= ATTR_MTIME_SET;
1068         }
1069
1070         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1071                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1072                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1073                        LTIME_S(CURRENT_TIME));
1074
1075         if (lsm)
1076                 attr->ia_valid &= ~ATTR_SIZE;
1077
1078         /* If only OST attributes being set on objects, don't do MDS RPC.
1079          * In that case, we need to check permissions and update the local
1080          * inode ourselves so we can call obdo_from_inode() always. */
1081         if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
1082                 struct lustre_md md;
1083
1084                 OBD_ALLOC(op_data, sizeof(*op_data));
1085                 if (op_data == NULL)
1086                         RETURN(-ENOMEM);
1087                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1088
1089                 rc = md_setattr(sbi->ll_md_exp, op_data,
1090                                 attr, NULL, 0, NULL, 0, &request);
1091                 OBD_FREE(op_data, sizeof(*op_data));
1092                 if (rc) {
1093                         ptlrpc_req_finished(request);
1094                         if (rc != -EPERM && rc != -EACCES)
1095                                 CERROR("md_setattr fails: rc = %d\n", rc);
1096                         RETURN(rc);
1097                 }
1098
1099                 rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
1100                                        sbi->ll_dt_exp, &md);
1101                 if (rc) {
1102                         ptlrpc_req_finished(request);
1103                         RETURN(rc);
1104                 }
1105
1106                 /* We call inode_setattr to adjust timestamps, but we first
1107                  * clear ATTR_SIZE to avoid invoking vmtruncate.
1108                  *
1109                  * NB: ATTR_SIZE will only be set at this point if the size
1110                  * resides on the MDS, ie, this file has no objects. */
1111                 attr->ia_valid &= ~ATTR_SIZE;
1112
1113                 /*
1114                  * assigning inode_setattr() to @err to disable warning that
1115                  * function's result should be checked by by caller. error is
1116                  * impossible here, as vmtruncate() control path is disabled.
1117                  */
1118                 err = inode_setattr(inode, attr);
1119                 ll_update_inode(inode, &md);
1120                 ptlrpc_req_finished(request);
1121
1122                 if (!lsm || !S_ISREG(inode->i_mode)) {
1123                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1124                         RETURN(0);
1125                 }
1126         } else {
1127                 /* The OST doesn't check permissions, but the alternative is
1128                  * a gratuitous RPC to the MDS.  We already rely on the client
1129                  * to do read/write/truncate permission checks, so is mtime OK?
1130                  */
1131                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
1132                         /* from sys_utime() */
1133                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
1134                                 if (current->fsuid != inode->i_uid &&
1135                                     (rc=ll_permission(inode,MAY_WRITE,NULL))!=0)
1136                                         RETURN(rc);
1137                         } else {
1138                                 /* from inode_change_ok() */
1139                                 if (current->fsuid != inode->i_uid &&
1140                                     !capable(CAP_FOWNER))
1141                                         RETURN(-EPERM);
1142                         }
1143                 }
1144
1145                 /* won't invoke vmtruncate, as we already cleared ATTR_SIZE */
1146                 err = inode_setattr(inode, attr);
1147                 /*
1148                  * assigning inode_setattr() to @err to disable warning that
1149                  * function's result should be checked by by caller. error is
1150                  * impossible here, as vmtruncate() control path is disabled.
1151                  */
1152         }
1153
1154         /* We really need to get our PW lock before we change inode->i_size.
1155          * If we don't we can race with other i_size updaters on our node, like
1156          * ll_file_read.  We can also race with i_size propogation to other
1157          * nodes through dirtying and writeback of final cached pages.  This
1158          * last one is especially bad for racing o_append users on other
1159          * nodes. */
1160         if (ia_valid & ATTR_SIZE) {
1161                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1162                                                            OBD_OBJECT_EOF } };
1163                 struct lustre_handle lockh = { 0 };
1164                 struct ll_inode_info *lli = ll_i2info(inode);
1165                 int err, ast_flags = 0;
1166                 /* XXX when we fix the AST intents to pass the discard-range
1167                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1168                  * XXX here. */
1169                 if (attr->ia_size == 0)
1170                         ast_flags = LDLM_AST_DISCARD_DATA;
1171
1172                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1173                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
1174
1175                 if (rc != 0)
1176                         RETURN(rc);
1177
1178                 down(&lli->lli_size_sem);
1179                 lli->lli_size_pid = current->pid;
1180                 rc = vmtruncate(inode, attr->ia_size);
1181                 if (rc != 0) {
1182                         LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1183                         lli->lli_size_pid = 0;
1184                         up(&lli->lli_size_sem);
1185                 }
1186
1187                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1188                 if (err) {
1189                         CERROR("ll_extent_unlock failed: %d\n", err);
1190                         if (!rc)
1191                                 rc = err;
1192                 }
1193         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1194                 struct obdo *oa = NULL;
1195
1196                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1197                        inode->i_ino, LTIME_S(attr->ia_mtime));
1198
1199                 oa = obdo_alloc();
1200                 if (oa == NULL)
1201                         RETURN(-ENOMEM);
1202
1203                 oa->o_id = lsm->lsm_object_id;
1204                 oa->o_gr = lsm->lsm_object_gr;
1205                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1206                 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1207                                 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1208                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1209                 obdo_free(oa);
1210                 if (rc)
1211                         CERROR("obd_setattr fails: rc = %d\n", rc);
1212         }
1213         RETURN(rc);
1214 }
1215
1216 int ll_setattr(struct dentry *de, struct iattr *attr)
1217 {
1218         LASSERT(de->d_inode);
1219         return ll_setattr_raw(de->d_inode, attr);
1220 }
1221
1222 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1223                        unsigned long max_age)
1224 {
1225         struct ll_sb_info *sbi = ll_s2sbi(sb);
1226         struct obd_statfs obd_osfs;
1227         int rc;
1228         ENTRY;
1229
1230         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1231         if (rc) {
1232                 CERROR("obd_statfs fails: rc = %d\n", rc);
1233                 RETURN(rc);
1234         }
1235
1236         osfs->os_type = sb->s_magic;
1237
1238         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1239                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1240
1241         rc = obd_statfs(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
1242         if (rc) {
1243                 CERROR("obd_statfs fails: rc = %d\n", rc);
1244                 RETURN(rc);
1245         }
1246
1247         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1248                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1249                obd_osfs.os_files);
1250
1251         osfs->os_blocks = obd_osfs.os_blocks;
1252         osfs->os_bfree = obd_osfs.os_bfree;
1253         osfs->os_bavail = obd_osfs.os_bavail;
1254
1255         /* If we don't have as many objects free on the OST as inodes
1256          * on the MDS, we reduce the total number of inodes to
1257          * compensate, so that the "inodes in use" number is correct.
1258          */
1259         if (obd_osfs.os_ffree < osfs->os_ffree) {
1260                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1261                         obd_osfs.os_ffree;
1262                 osfs->os_ffree = obd_osfs.os_ffree;
1263         }
1264
1265         RETURN(rc);
1266 }
1267
1268 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1269 {
1270         struct obd_statfs osfs;
1271         int rc;
1272
1273         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p\n", sb);
1274         lprocfs_counter_incr(ll_s2sbi(sb)->ll_stats, LPROC_LL_STAFS);
1275
1276         /* For now we will always get up-to-date statfs values, but in the
1277          * future we may allow some amount of caching on the client (e.g.
1278          * from QOS or lprocfs updates). */
1279         rc = ll_statfs_internal(sb, &osfs, jiffies - 1);
1280         if (rc)
1281                 return rc;
1282
1283         statfs_unpack(sfs, &osfs);
1284
1285         if (sizeof(sfs->f_blocks) == 4) {
1286                 while (osfs.os_blocks > ~0UL) {
1287                         sfs->f_bsize <<= 1;
1288
1289                         osfs.os_blocks >>= 1;
1290                         osfs.os_bfree >>= 1;
1291                         osfs.os_bavail >>= 1;
1292                 }
1293         }
1294
1295         sfs->f_blocks = osfs.os_blocks;
1296         sfs->f_bfree = osfs.os_bfree;
1297         sfs->f_bavail = osfs.os_bavail;
1298
1299         return 0;
1300 }
1301
1302 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1303 {
1304         struct ll_inode_info *lli = ll_i2info(inode);
1305         struct lov_stripe_md *lsm = md->lsm;
1306         struct mds_body *body = md->body;
1307         struct mea *mea = md->mea;
1308         struct posix_acl *ll_acl_access = md->acl_access;
1309         ENTRY;
1310
1311         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1312
1313         if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
1314                 /* check for default striping info for dir. */
1315                 LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
1316         }
1317
1318         if (lsm != NULL) {
1319                 LASSERT(lsm->lsm_object_gr > 0);
1320                 if (lli->lli_smd == NULL) {
1321                         lli->lli_smd = lsm;
1322                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1323                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1324                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1325                 } else {
1326                         int i;
1327                         if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
1328                                 CERROR("lsm mismatch for inode %ld\n",
1329                                        inode->i_ino);
1330                                 CERROR("lli_smd:\n");
1331                                 dump_lsm(D_ERROR, lli->lli_smd);
1332                                 CERROR("lsm:\n");
1333                                 dump_lsm(D_ERROR, lsm);
1334                                 LBUG();
1335                         }
1336                         /* XXX FIXME -- We should decide on a safer (atomic) and
1337                          * more elegant way to update the lsm */
1338                         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1339                                 lli->lli_smd->lsm_oinfo[i].loi_id =
1340                                         lsm->lsm_oinfo[i].loi_id;
1341                                 lli->lli_smd->lsm_oinfo[i].loi_gr =
1342                                         lsm->lsm_oinfo[i].loi_gr;
1343                                 lli->lli_smd->lsm_oinfo[i].loi_ost_idx =
1344                                         lsm->lsm_oinfo[i].loi_ost_idx;
1345                                 lli->lli_smd->lsm_oinfo[i].loi_ost_gen =
1346                                         lsm->lsm_oinfo[i].loi_ost_gen;
1347                         }
1348                 }
1349                 /* bug 2844 - limit i_blksize for broken user-space apps */
1350                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
1351                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
1352                 if (lli->lli_smd != lsm)
1353                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1354         }
1355
1356         if (mea != NULL) {
1357                 if (lli->lli_mea == NULL) {
1358                         lli->lli_mea = mea;
1359                 } else {
1360                         if (memcmp(lli->lli_mea, mea, body->eadatasize)) {
1361                                 CERROR("mea mismatch for inode %lu\n",
1362                                         inode->i_ino);
1363                                 LBUG();
1364                         }
1365                 }
1366                 if (lli->lli_mea != mea)
1367                         obd_free_memmd(ll_i2mdexp(inode),
1368                                        (struct lov_stripe_md **) &mea);
1369         }
1370
1371         if (body->valid & OBD_MD_FID)
1372                 id_assign_fid(&lli->lli_id, &body->id1);
1373
1374         if (body->valid & OBD_MD_FLID)
1375                 id_ino(&lli->lli_id) = id_ino(&body->id1);
1376
1377         if (body->valid & OBD_MD_FLGENER)
1378                 id_gen(&lli->lli_id) = id_gen(&body->id1);
1379
1380         spin_lock(&lli->lli_lock);
1381         if (ll_acl_access != NULL) {
1382                 if (lli->lli_acl_access != NULL)
1383                         posix_acl_release(lli->lli_acl_access);
1384                 lli->lli_acl_access = ll_acl_access;
1385         }
1386         spin_unlock(&lli->lli_lock);
1387
1388         if (body->valid & OBD_MD_FLID)
1389                 inode->i_ino = id_ino(&body->id1);
1390         if (body->valid & OBD_MD_FLGENER)
1391                 inode->i_generation = id_gen(&body->id1);
1392         if (body->valid & OBD_MD_FLATIME)
1393                 LTIME_S(inode->i_atime) = body->atime;
1394         if (body->valid & OBD_MD_FLMTIME &&
1395             body->mtime > LTIME_S(inode->i_mtime)) {
1396                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %u\n",
1397                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
1398                 LTIME_S(inode->i_mtime) = body->mtime;
1399         }
1400         if (body->valid & OBD_MD_FLCTIME &&
1401             body->ctime > LTIME_S(inode->i_ctime))
1402                 LTIME_S(inode->i_ctime) = body->ctime;
1403         if (body->valid & OBD_MD_FLMODE) {
1404                 inode->i_mode = (inode->i_mode & S_IFMT) |
1405                         (body->mode & ~S_IFMT);
1406         }
1407         if (body->valid & OBD_MD_FLTYPE) {
1408                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1409                         (body->mode & S_IFMT);
1410         }
1411         if (body->valid & OBD_MD_FLUID)
1412                 inode->i_uid = body->uid;
1413         if (body->valid & OBD_MD_FLGID)
1414                 inode->i_gid = body->gid;
1415         if (body->valid & OBD_MD_FLFLAGS)
1416                 inode->i_flags = body->flags;
1417         if (body->valid & OBD_MD_FLNLINK)
1418                 inode->i_nlink = body->nlink;
1419         if (body->valid & OBD_MD_FLRDEV)
1420 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1421                 inode->i_rdev = body->rdev;
1422 #else
1423                 inode->i_rdev = old_decode_dev(body->rdev);
1424 #endif
1425         if (body->valid & OBD_MD_FLSIZE)
1426                 inode->i_size = body->size;
1427         if (body->valid & OBD_MD_FLBLOCKS)
1428                 inode->i_blocks = body->blocks;
1429
1430         if (body->valid & OBD_MD_FLSIZE)
1431                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
1432
1433 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1434         inode->i_dev = (kdev_t)id_group(&lli->lli_id);
1435 #endif
1436         LASSERT(id_fid(&lli->lli_id) != 0);
1437 }
1438
1439 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
1440 static struct backing_dev_info ll_backing_dev_info = {
1441         .ra_pages       = 0,    /* No readahead */
1442         .memory_backed  = 0,    /* Does contribute to dirty memory */
1443 };
1444 #endif
1445
1446 void ll_read_inode2(struct inode *inode, void *opaque)
1447 {
1448         struct lustre_md *md = opaque;
1449         struct ll_inode_info *lli = ll_i2info(inode);
1450         ENTRY;
1451
1452         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1453                inode->i_generation, inode);
1454
1455         ll_lli_init(lli);
1456
1457         LASSERT(!lli->lli_smd);
1458
1459         /* Core attributes from the MDS first.  This is a new inode, and
1460          * the VFS doesn't zero times in the core inode so we have to do
1461          * it ourselves.  They will be overwritten by either MDS or OST
1462          * attributes - we just need to make sure they aren't newer. */
1463         LTIME_S(inode->i_mtime) = 0;
1464         LTIME_S(inode->i_atime) = 0;
1465         LTIME_S(inode->i_ctime) = 0;
1466
1467         inode->i_rdev = 0;
1468         ll_update_inode(inode, md);
1469
1470         /* OIDEBUG(inode); */
1471
1472         if (S_ISREG(inode->i_mode)) {
1473                 inode->i_op = &ll_file_inode_operations;
1474                 inode->i_fop = &ll_file_operations;
1475                 inode->i_mapping->a_ops = &ll_aops;
1476                 EXIT;
1477         } else if (S_ISDIR(inode->i_mode)) {
1478                 inode->i_op = &ll_dir_inode_operations;
1479                 inode->i_fop = &ll_dir_operations;
1480                 inode->i_mapping->a_ops = &ll_dir_aops;
1481                 EXIT;
1482         } else if (S_ISLNK(inode->i_mode)) {
1483                 inode->i_op = &ll_fast_symlink_inode_operations;
1484                 EXIT;
1485         } else {
1486                 inode->i_op = &ll_special_inode_operations;
1487
1488 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1489                 init_special_inode(inode, inode->i_mode,
1490                                    kdev_t_to_nr(inode->i_rdev));
1491
1492                 /* initializing backing dev info. */
1493                 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1494 #else
1495                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1496 #endif
1497                 lli->ll_save_ifop = inode->i_fop;
1498
1499                 if (S_ISCHR(inode->i_mode))
1500                         inode->i_fop = &ll_special_chr_inode_fops;
1501                 else if (S_ISBLK(inode->i_mode))
1502                         inode->i_fop = &ll_special_blk_inode_fops;
1503                 else if (S_ISFIFO(inode->i_mode))
1504                         inode->i_fop = &ll_special_fifo_inode_fops;
1505                 else if (S_ISSOCK(inode->i_mode))
1506                         inode->i_fop = &ll_special_sock_inode_fops;
1507
1508                 CWARN("saved %p, replaced with %p\n", lli->ll_save_ifop,
1509                       inode->i_fop);
1510
1511                 if (lli->ll_save_ifop->owner) {
1512                         CWARN("%p has owner %p\n", lli->ll_save_ifop,
1513                               lli->ll_save_ifop->owner);
1514                 }
1515                 EXIT;
1516         }
1517 }
1518
1519 void ll_delete_inode(struct inode *inode)
1520 {
1521         struct ll_sb_info *sbi = ll_i2sbi(inode);
1522         struct lustre_id id;
1523         int rc;
1524         ENTRY;
1525
1526         ll_inode2id(&id, inode);
1527
1528         rc = md_delete_inode(sbi->ll_md_exp, &id);
1529         if (rc) {
1530                 CERROR("md_delete_inode() failed, error %d\n",
1531                        rc);
1532         }
1533
1534         clear_inode(inode);
1535         EXIT;
1536 }
1537
1538 int ll_iocontrol(struct inode *inode, struct file *file,
1539                  unsigned int cmd, unsigned long arg)
1540 {
1541         struct ll_sb_info *sbi = ll_i2sbi(inode);
1542         struct ptlrpc_request *req = NULL;
1543         int rc, flags = 0;
1544         ENTRY;
1545
1546         switch(cmd) {
1547         case EXT3_IOC_GETFLAGS: {
1548                 struct lustre_id id;
1549                 __u64 valid = OBD_MD_FLFLAGS;
1550                 struct mds_body *body;
1551
1552                 ll_inode2id(&id, inode);
1553                 rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, 0, 0, &req);
1554                 if (rc) {
1555                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1556                         RETURN(-abs(rc));
1557                 }
1558
1559                 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
1560
1561                 if (body->flags & S_APPEND)
1562                         flags |= EXT3_APPEND_FL;
1563                 if (body->flags & S_IMMUTABLE)
1564                         flags |= EXT3_IMMUTABLE_FL;
1565                 if (body->flags & S_NOATIME)
1566                         flags |= EXT3_NOATIME_FL;
1567
1568                 ptlrpc_req_finished (req);
1569
1570                 RETURN(put_user(flags, (int *)arg));
1571         }
1572         case EXT3_IOC_SETFLAGS: {
1573                 struct mdc_op_data *op_data;
1574                 struct iattr attr;
1575                 struct obdo *oa;
1576                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1577
1578                 if (get_user(flags, (int *)arg))
1579                         RETURN(-EFAULT);
1580
1581                 oa = obdo_alloc();
1582                 if (!oa)
1583                         RETURN(-ENOMEM);
1584
1585                 OBD_ALLOC(op_data, sizeof(*op_data));
1586                 if (op_data == NULL) {
1587                         obdo_free(oa);
1588                         RETURN(-ENOMEM);
1589                 }
1590                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1591
1592                 memset(&attr, 0x0, sizeof(attr));
1593                 attr.ia_attr_flags = flags;
1594                 attr.ia_valid |= ATTR_ATTR_FLAG;
1595
1596                 rc = md_setattr(sbi->ll_md_exp, op_data,
1597                                 &attr, NULL, 0, NULL, 0, &req);
1598                 OBD_FREE(op_data, sizeof(*op_data));
1599                 if (rc) {
1600                         ptlrpc_req_finished(req);
1601                         if (rc != -EPERM && rc != -EACCES)
1602                                 CERROR("md_setattr fails: rc = %d\n", rc);
1603                         obdo_free(oa);
1604                         RETURN(rc);
1605                 }
1606                 ptlrpc_req_finished(req);
1607
1608                 oa->o_id = lsm->lsm_object_id;
1609                 oa->o_gr = lsm->lsm_object_gr;
1610                 oa->o_flags = flags;
1611                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1612
1613                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1614                 obdo_free(oa);
1615                 if (rc) {
1616                         if (rc != -EPERM && rc != -EACCES)
1617                                 CERROR("md_setattr fails: rc = %d\n", rc);
1618                         RETURN(rc);
1619                 }
1620
1621                 if (flags & EXT3_APPEND_FL)
1622                         inode->i_flags |= S_APPEND;
1623                 else
1624                         inode->i_flags &= ~S_APPEND;
1625                 if (flags & EXT3_IMMUTABLE_FL)
1626                         inode->i_flags |= S_IMMUTABLE;
1627                 else
1628                         inode->i_flags &= ~S_IMMUTABLE;
1629                 if (flags & EXT3_NOATIME_FL)
1630                         inode->i_flags |= S_NOATIME;
1631                 else
1632                         inode->i_flags &= ~S_NOATIME;
1633
1634                 RETURN(0);
1635         }
1636         default:
1637                 RETURN(-ENOSYS);
1638         }
1639
1640         RETURN(0);
1641 }
1642
1643 /* this is only called in the case of forced umount. */
1644 void ll_umount_begin(struct super_block *sb)
1645 {
1646         struct ll_sb_info *sbi = ll_s2sbi(sb);
1647         struct obd_ioctl_data ioc_data = { 0 };
1648         struct obd_device *obd;
1649         ENTRY;
1650
1651         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1652                sb->s_count, atomic_read(&sb->s_active));
1653
1654         obd = class_exp2obd(sbi->ll_md_exp);
1655         if (obd == NULL) {
1656                 CERROR("Invalid MDC connection handle "LPX64"\n",
1657                        sbi->ll_md_exp->exp_handle.h_cookie);
1658                 EXIT;
1659                 return;
1660         }
1661         obd->obd_no_recov = 1;
1662         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1663                       sizeof(ioc_data), &ioc_data, NULL);
1664
1665         obd = class_exp2obd(sbi->ll_dt_exp);
1666         if (obd == NULL) {
1667                 CERROR("Invalid LOV connection handle "LPX64"\n",
1668                        sbi->ll_dt_exp->exp_handle.h_cookie);
1669                 EXIT;
1670                 return;
1671         }
1672
1673         obd->obd_no_recov = 1;
1674         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1675                       sizeof(ioc_data), &ioc_data, NULL);
1676
1677         /*
1678          * really, we'd like to wait until there are no requests outstanding,
1679          * and then continue.  For now, we just invalidate the requests,
1680          * schedule, and hope.
1681          */
1682         schedule();
1683
1684         EXIT;
1685 }
1686
1687 int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
1688                   struct inode **inode, struct ptlrpc_request *req,
1689                   int offset, struct super_block *sb)
1690 {
1691         struct lustre_md md;
1692         int rc = 0;
1693
1694         rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
1695         if (rc)
1696                 RETURN(rc);
1697
1698         if (*inode) {
1699                 ll_update_inode(*inode, &md);
1700         } else {
1701                 LASSERT(sb);
1702                 *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
1703                 if (*inode == NULL || is_bad_inode(*inode)) {
1704                         /* free the lsm if we allocated one above */
1705                         if (md.lsm != NULL)
1706                                 obd_free_memmd(dt_exp, &md.lsm);
1707                         if (md.mea != NULL)
1708                                 obd_free_memmd(md_exp,
1709                                                (struct lov_stripe_md**)&md.mea);
1710                         rc = -ENOMEM;
1711                         CERROR("new_inode -fatal: rc %d\n", rc);
1712                 }
1713         }
1714
1715         RETURN(rc);
1716 }
1717
1718 int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
1719                char *filename, struct lustre_id *ret)
1720 {
1721         struct ptlrpc_request *request = NULL;
1722         struct mds_body *body;
1723         int rc;
1724
1725         rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
1726                              OBD_MD_FID, 0, &request);
1727         if (rc < 0) {
1728                 CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
1729                        filename, rc);
1730                 return rc;
1731         }
1732
1733         body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
1734         LASSERT(body != NULL);
1735         LASSERT_REPSWABBED(request, 0);
1736
1737         *ret = body->id1;
1738         ptlrpc_req_finished(request);
1739
1740         return rc;
1741 }