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         sbi->ll_gns_tick = GNS_TICK_TIMEOUT;
  87         sbi->ll_gns_timeout = GNS_MOUNT_TIMEOUT;
  88
  89         sbi->ll_gns_timer.data = (unsigned long)sbi;
  90         sbi->ll_gns_timer.function = ll_gns_timer_callback;
  91         init_timer(&sbi->ll_gns_timer);
  92
  93         ll_set_sbi(sb, sbi);
  94
  95         generate_random_uuid(uuid);
  96         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
  97         RETURN(sbi);
  98 }
  99
 100 void lustre_free_sbi(struct super_block *sb)
 101 {
 102         struct ll_sb_info *sbi = ll_s2sbi(sb);
 103         ENTRY;
 104
 105         if (sbi != NULL) {
 106                 list_del(&sbi->ll_gns_sbi_head);
 107                 del_timer(&sbi->ll_gns_timer);
 108                 OBD_FREE(sbi, sizeof(*sbi));
 109         }
 110         ll_set_sbi(sb, NULL);
 111         EXIT;
 112 }
 113
 114 int lustre_init_dt_desc(struct ll_sb_info *sbi)
 115 {
 116         int valsize, rc;
 117         ENTRY;
 118
 119         valsize = sizeof(sbi->ll_dt_desc);
 120         memset(&sbi->ll_dt_desc, 0, sizeof(sbi->ll_dt_desc));
 121         rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 122                           "lovdesc", &valsize, &sbi->ll_dt_desc);
 123         RETURN(rc);
 124 }
 125
 126 extern struct dentry_operations ll_d_ops;
 127
 128 int lustre_common_fill_super(struct super_block *sb, char *lmv, char *lov,
 129                              int async, char *security, __u32 *nllu,
 130                              __u64 *remote)
 131 {
 132         struct ll_sb_info *sbi = ll_s2sbi(sb);
 133         struct ptlrpc_request *request = NULL;
 134         struct lustre_handle dt_conn = {0, };
 135         struct lustre_handle md_conn = {0, };
 136         struct obd_connect_data *data;
 137         struct inode *root = NULL;
 138         struct obd_device *obd;
 139         struct obd_statfs osfs;
 140         struct lustre_md md;
 141         kdev_t devno;
 142         int err;
 143         __u32 valsize;
 144         ENTRY;
 145
 146         obd = class_name2obd(lmv);
 147         if (!obd) {
 148                 CERROR("MDC %s: not setup or attached\n", lmv);
 149                 RETURN(-EINVAL);
 150         }
 151         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 152                      sizeof(async), &async);
 153
 154         if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
 155             (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
 156                 CERROR("wrong remote flag "LPX64"\n", *remote);
 157                 RETURN(-EINVAL);
 158         }
 159
 160         OBD_ALLOC(data, sizeof(*data));
 161         if (!data)
 162                 RETURN(-ENOMEM);
 163
 164         data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
 165                                               OBD_CONNECT_REMOTE);
 166         memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
 167
 168         if (security == NULL)
 169                 security = "null";
 170
 171         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 172                            strlen(security), security);
 173         if (err) {
 174                 CERROR("LMV %s: failed to set security %s, err %d\n",
 175                         lmv, security, err);
 176                 OBD_FREE(data, sizeof(*data));
 177                 RETURN(err);
 178         }
 179
 180         if (proc_lustre_fs_root) {
 181                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 182                                                   lov, lmv);
 183                 if (err < 0)
 184                         CERROR("could not register mount in /proc/lustre");
 185         }
 186
 187         err = obd_connect(&md_conn, obd, &sbi->ll_sb_uuid, data,
 188                           OBD_OPT_REAL_CLIENT);
 189         if (err == -EBUSY) {
 190                 CERROR("An MDS (lmv %s) is performing recovery, of which this"
 191                        " client is not a part.  Please wait for recovery to "
 192                        "complete, abort, or time out.\n", lmv);
 193                 GOTO(out, err);
 194         } else if (err) {
 195                 CERROR("cannot connect to %s: rc = %d\n", lmv, err);
 196                 GOTO(out, err);
 197         }
 198         sbi->ll_md_exp = class_conn2export(&md_conn);
 199         err = obd_statfs(obd, &osfs, jiffies - HZ);
 200         if (err)
 201                 GOTO(out_lmv, err);
 202
 203         if (!osfs.os_bsize) {
 204                 CERROR("Invalid block size is detected.");
 205                 GOTO(out_lmv, err);
 206         }
 207
 208         sb->s_magic = LL_SUPER_MAGIC;
 209         sb->s_blocksize = osfs.os_bsize;
 210         sb->s_blocksize_bits = log2(osfs.os_bsize);
 211         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 212
 213         devno = get_uuid2int(sbi->ll_md_exp->exp_obd->obd_uuid.uuid,
 214                              strlen(sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
 215
 216         sb->s_dev = devno;
 217
 218         /* after statfs, we are supposed to have connected to MDSs,
 219          * so it's ok to check remote flag returned.
 220          */
 221         valsize = sizeof(&sbi->ll_remote);
 222         err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
 223                            &valsize, &sbi->ll_remote);
 224         if (err) {
 225                 CERROR("fail to obtain remote flag\n");
 226                 GOTO(out, err);
 227         }
 228
 229         obd = class_name2obd(lov);
 230         if (!obd) {
 231                 CERROR("OSC %s: not setup or attached\n", lov);
 232                 GOTO(out_lmv, err);
 233         }
 234         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 235                      sizeof(async), &async);
 236
 237         err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data,
 238                           OBD_OPT_REAL_CLIENT);
 239         if (err == -EBUSY) {
 240                 CERROR("An OST (lov %s) is performing recovery, of which this"
 241                        " client is not a part.  Please wait for recovery to "
 242                        "complete, abort, or time out.\n", lov);
 243                 GOTO(out, err);
 244         } else if (err) {
 245                 CERROR("cannot connect to %s: rc = %d\n", lov, err);
 246                 GOTO(out_lmv, err);
 247         }
 248         sbi->ll_dt_exp = class_conn2export(&dt_conn);
 249
 250         err = lustre_init_dt_desc(sbi);
 251         if (err == 0) {
 252                 int mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 253                 obd_init_ea_size(sbi->ll_md_exp, mdsize,
 254                                  sbi->ll_dt_desc.ld_tgt_count *
 255                                  sizeof(struct llog_cookie));
 256         }
 257
 258         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
 259         if (err) {
 260                 CERROR("cannot mds_connect: rc = %d\n", err);
 261                 GOTO(out_lov, err);
 262         }
 263         CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 264
 265         sb->s_op = &lustre_super_operations;
 266
 267         /* make root inode
 268          * XXX: move this to after cbd setup? */
 269         err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
 270                          (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID), NULL, 0,
 271                          0, &request);
 272         if (err) {
 273                 CERROR("md_getattr failed for root: rc = %d\n", err);
 274                 GOTO(out_lov, err);
 275         }
 276
 277         err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
 278                                 sbi->ll_dt_exp, &md);
 279         if (err) {
 280                 CERROR("failed to understand root inode md: rc = %d\n", err);
 281                 ptlrpc_req_finished(request);
 282                 GOTO(out_lov, err);
 283         }
 284
 285         LASSERT(id_ino(&sbi->ll_rootid) != 0);
 286         root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 287
 288         ptlrpc_req_finished(request);
 289
 290         if (root == NULL || is_bad_inode(root)) {
 291                 CERROR("lustre_lite: bad iget4 for root\n");
 292                 GOTO(out_root, err = -EBADF);
 293         }
 294
 295         err = ll_close_thread_start(&sbi->ll_lcq);
 296         if (err) {
 297                 CERROR("cannot start close thread: rc %d\n", err);
 298                 GOTO(out_root, err);
 299         }
 300
 301         ll_gns_add_timer(sbi);
 302
 303         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
 304            backing dev info assigned to inode mapping is used for
 305            determining maximal readahead. */
 306 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
 307     !defined(KERNEL_HAS_AS_MAX_READAHEAD)
 308         /* bug 2805 - set VM readahead to zero */
 309         vm_max_readahead = vm_min_readahead = 0;
 310 #endif
 311
 312         sb->s_root = d_alloc_root(root);
 313         sb->s_root->d_op = &ll_d_ops;
 314
 315         sb->s_flags |= MS_POSIXACL;
 316 #ifdef S_PDIROPS
 317         CWARN("Enabling PDIROPS\n");
 318         sb->s_flags |= S_PDIROPS;
 319 #endif
 320
 321         if (data != NULL)
 322                 OBD_FREE(data, sizeof(*data));
 323         RETURN(err);
 324 out_root:
 325         if (root)
 326                 iput(root);
 327 out_lov:
 328         obd_disconnect(sbi->ll_dt_exp, 0);
 329 out_lmv:
 330         obd_disconnect(sbi->ll_md_exp, 0);
 331 out:
 332         if (data != NULL)
 333                 OBD_FREE(data, sizeof(*data));
 334         lprocfs_unregister_mountpoint(sbi);
 335         return err;
 336 }
 337
 338 void lustre_common_put_super(struct super_block *sb)
 339 {
 340         struct ll_sb_info *sbi = ll_s2sbi(sb);
 341         struct hlist_node *tmp, *next;
 342         ENTRY;
 343
 344         ll_gns_del_timer(sbi);
 345         ll_close_thread_shutdown(sbi->ll_lcq);
 346
 347         list_del(&sbi->ll_conn_chain);
 348         obd_disconnect(sbi->ll_dt_exp, 0);
 349
 350         lprocfs_unregister_mountpoint(sbi);
 351         if (sbi->ll_proc_root) {
 352                 lprocfs_remove(sbi->ll_proc_root);
 353                 sbi->ll_proc_root = NULL;
 354         }
 355
 356         obd_disconnect(sbi->ll_md_exp, 0);
 357
 358         // We do this to get rid of orphaned dentries. That is not really trw.
 359         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
 360                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
 361                 CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
 362                       dentry->d_name.len, dentry->d_name.name, dentry, next);
 363                 shrink_dcache_parent(dentry);
 364         }
 365         EXIT;
 366 }
 367
 368 char *ll_read_opt(const char *opt, char *data)
 369 {
 370         char *value;
 371         char *retval;
 372         ENTRY;
 373
 374         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 375         if (strncmp(opt, data, strlen(opt)))
 376                 RETURN(NULL);
 377         if ((value = strchr(data, '=')) == NULL)
 378                 RETURN(NULL);
 379
 380         value++;
 381         OBD_ALLOC(retval, strlen(value) + 1);
 382         if (!retval) {
 383                 CERROR("out of memory!\n");
 384                 RETURN(NULL);
 385         }
 386
 387         memcpy(retval, value, strlen(value)+1);
 388         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 389         RETURN(retval);
 390 }
 391
 392 int ll_set_opt(const char *opt, char *data, int fl)
 393 {
 394         ENTRY;
 395
 396         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 397         if (strncmp(opt, data, strlen(opt)))
 398                 RETURN(0);
 399         else
 400                 RETURN(fl);
 401 }
 402
 403 void ll_options(char *options, char **lov, char **lmv, char **sec,
 404                 int *async, int *flags)
 405 {
 406         char *this_char;
 407 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 408         char *opt_ptr = options;
 409 #endif
 410         ENTRY;
 411
 412         if (!options) {
 413                 EXIT;
 414                 return;
 415         }
 416
 417         *async = 0;
 418 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 419         for (this_char = strtok (options, ",");
 420              this_char != NULL;
 421              this_char = strtok (NULL, ",")) {
 422 #else
 423         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 424 #endif
 425                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
 426                 if (!*lov && (*lov = ll_read_opt("osc", this_char)))
 427                         continue;
 428                 if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
 429                         continue;
 430                 if (!strncmp(this_char, "lasync", strlen("lasync"))) {
 431                         *async = 1;
 432                         continue;
 433                 }
 434                 if (!*sec && (*sec = ll_read_opt("sec", this_char)))
 435                         continue;
 436                 if (!(*flags & LL_SBI_NOLCK) &&
 437                     ((*flags) = (*flags) |
 438                                 ll_set_opt("nolock", this_char,
 439                                            LL_SBI_NOLCK)))
 440                         continue;
 441         }
 442
 443         EXIT;
 444 }
 445
 446 void ll_lli_init(struct ll_inode_info *lli)
 447 {
 448         sema_init(&lli->lli_open_sem, 1);
 449         sema_init(&lli->lli_size_sem, 1);
 450         lli->lli_flags = 0;
 451         lli->lli_size_pid = 0;
 452         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 453         spin_lock_init(&lli->lli_lock);
 454         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
 455         lli->lli_inode_magic = LLI_INODE_MAGIC;
 456         memset(&lli->lli_id, 0, sizeof(lli->lli_id));
 457         sema_init(&lli->lli_och_sem, 1);
 458         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
 459         lli->lli_mds_exec_och = NULL;
 460         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
 461         lli->lli_open_fd_exec_count = 0;
 462 }
 463
 464 int ll_fill_super(struct super_block *sb, void *data, int silent)
 465 {
 466         struct ll_sb_info *sbi;
 467         char *lov = NULL;
 468         char *lmv = NULL;
 469         int async, err;
 470         char *sec = NULL;
 471         __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
 472         __u64 remote_flag = 0;
 473         ENTRY;
 474
 475         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 476
 477         sbi = lustre_init_sbi(sb);
 478         if (!sbi)
 479                 RETURN(-ENOMEM);
 480
 481         sbi->ll_flags |= LL_SBI_READAHEAD;
 482         ll_options(data, &lov, &lmv, &sec, &async, &sbi->ll_flags);
 483
 484         if (!lov) {
 485                 CERROR("no osc\n");
 486                 GOTO(out, err = -EINVAL);
 487         }
 488
 489         if (!lmv) {
 490                 CERROR("no mdc\n");
 491                 GOTO(out, err = -EINVAL);
 492         }
 493
 494         err = lustre_common_fill_super(sb, lmv, lov, async, sec, nllu,
 495                                        &remote_flag);
 496         EXIT;
 497 out:
 498         if (err)
 499                 lustre_free_sbi(sb);
 500
 501         if (sec)
 502                 OBD_FREE(sec, strlen(sec) + 1);
 503         if (lmv)
 504                 OBD_FREE(lmv, strlen(lmv) + 1);
 505         if (lov)
 506                 OBD_FREE(lov, strlen(lov) + 1);
 507         return err;
 508 } /* ll_read_super */
 509
 510 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
 511                               struct config_llog_instance *cfg, int allow_recov)
 512 {
 513         struct lustre_cfg lcfg;
 514         struct portals_cfg pcfg;
 515         char *peer = "MDS_PEER_UUID";
 516         struct obd_device *obd;
 517         struct lustre_handle md_conn = {0, };
 518         struct obd_export *exp;
 519         char *name = "mdc_dev";
 520         class_uuid_t uuid;
 521         struct obd_uuid lmv_uuid;
 522         struct llog_ctxt *ctxt;
 523         int rc = 0, err = 0;
 524         ENTRY;
 525
 526         if (lmd_bad_magic(lmd))
 527                 RETURN(-EINVAL);
 528
 529         generate_random_uuid(uuid);
 530         class_uuid_unparse(uuid, &lmv_uuid);
 531
 532         if (lmd->lmd_local_nid) {
 533                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
 534                 pcfg.pcfg_nal = lmd->lmd_nal;
 535                 pcfg.pcfg_nid = lmd->lmd_local_nid;
 536                 rc = libcfs_nal_cmd(&pcfg);
 537                 if (rc < 0)
 538                         GOTO(out, rc);
 539         }
 540
 541         if (lmd->lmd_nal == SOCKNAL ||
 542             lmd->lmd_nal == OPENIBNAL ||
 543             lmd->lmd_nal == IIBNAL ||
 544             lmd->lmd_nal == VIBNAL ||
 545             lmd->lmd_nal == RANAL) {
 546                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
 547                 pcfg.pcfg_nal     = lmd->lmd_nal;
 548                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 549                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
 550                 pcfg.pcfg_misc    = lmd->lmd_port;
 551                 rc = libcfs_nal_cmd(&pcfg);
 552                 if (rc < 0)
 553                         GOTO(out, rc);
 554         }
 555
 556         LCFG_INIT(lcfg, LCFG_ADD_UUID, name);
 557         lcfg.lcfg_nid = lmd->lmd_server_nid;
 558         lcfg.lcfg_inllen1 = strlen(peer) + 1;
 559         lcfg.lcfg_inlbuf1 = peer;
 560         lcfg.lcfg_nal = lmd->lmd_nal;
 561         rc = class_process_config(&lcfg);
 562         if (rc < 0)
 563                 GOTO(out_del_conn, rc);
 564
 565         LCFG_INIT(lcfg, LCFG_ATTACH, name);
 566         lcfg.lcfg_inlbuf1 = "mdc";
 567         lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
 568         lcfg.lcfg_inlbuf2 = lmv_uuid.uuid;
 569         lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
 570         err = class_process_config(&lcfg);
 571         if (rc < 0)
 572                 GOTO(out_del_uuid, rc);
 573
 574         LCFG_INIT(lcfg, LCFG_SETUP, name);
 575         lcfg.lcfg_inlbuf1 = lmd->lmd_mds;
 576         lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
 577         lcfg.lcfg_inlbuf2 = peer;
 578         lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
 579         rc = class_process_config(&lcfg);
 580         if (rc < 0)
 581                 GOTO(out_detach, rc);
 582
 583         obd = class_name2obd(name);
 584         if (obd == NULL)
 585                 GOTO(out_cleanup, rc = -EINVAL);
 586
 587         rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 588                           strlen(lmd->lmd_security), lmd->lmd_security);
 589         if (rc)
 590                 GOTO(out_cleanup, rc);
 591
 592         /* Disable initial recovery on this import */
 593         rc = obd_set_info(obd->obd_self_export,
 594                           strlen("initial_recov"), "initial_recov",
 595                           sizeof(allow_recov), &allow_recov);
 596         if (rc)
 597                 GOTO(out_cleanup, rc);
 598
 599         rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, 0);
 600         if (rc) {
 601                 CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
 602                 GOTO(out_cleanup, rc);
 603         }
 604
 605         exp = class_conn2export(&md_conn);
 606
 607         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
 608         rc = class_config_process_llog(ctxt, profile, cfg);
 609         if (rc)
 610                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 611
 612         err = obd_disconnect(exp, 0);
 613
 614         EXIT;
 615 out_cleanup:
 616         LCFG_INIT(lcfg, LCFG_CLEANUP, name);
 617         err = class_process_config(&lcfg);
 618         if (err < 0)
 619                 GOTO(out, err);
 620
 621 out_detach:
 622         LCFG_INIT(lcfg, LCFG_DETACH, name);
 623         err = class_process_config(&lcfg);
 624         if (err < 0)
 625                 GOTO(out, err);
 626
 627 out_del_uuid:
 628         LCFG_INIT(lcfg, LCFG_DEL_UUID, name);
 629         lcfg.lcfg_inllen1 = strlen(peer) + 1;
 630         lcfg.lcfg_inlbuf1 = peer;
 631         err = class_process_config(&lcfg);
 632
 633 out_del_conn:
 634         if (lmd->lmd_nal == SOCKNAL ||
 635             lmd->lmd_nal == OPENIBNAL ||
 636             lmd->lmd_nal == IIBNAL ||
 637             lmd->lmd_nal == VIBNAL ||
 638             lmd->lmd_nal == RANAL) {
 639                 int err2;
 640
 641                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
 642                 pcfg.pcfg_nal     = lmd->lmd_nal;
 643                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 644                 pcfg.pcfg_flags   = 1;          /* single_share */
 645                 err2 = libcfs_nal_cmd(&pcfg);
 646                 if (err2 && !err)
 647                         err = err2;
 648                 if (err < 0)
 649                         GOTO(out, err);
 650         }
 651 out:
 652         if (rc == 0)
 653                 rc = err;
 654
 655         return rc;
 656 }
 657
 658 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 659 {
 660         struct lustre_cfg lcfg;
 661         struct obd_device *obd;
 662         int next = 0;
 663
 664         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 665         {
 666                 int err;
 667
 668                 LCFG_INIT(lcfg, LCFG_CLEANUP, obd->obd_name);
 669                 err = class_process_config(&lcfg);
 670                 if (err) {
 671                         CERROR("cleanup failed: %s\n", obd->obd_name);
 672                         //continue;
 673                 }
 674
 675                 LCFG_INIT(lcfg, LCFG_DETACH, obd->obd_name);
 676                 err = class_process_config(&lcfg);
 677                 if (err) {
 678                         CERROR("detach failed: %s\n", obd->obd_name);
 679                         //continue;
 680                 }
 681         }
 682
 683         if (sbi->ll_lmd != NULL)
 684                 class_del_profile(sbi->ll_lmd->lmd_profile);
 685 }
 686
 687 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 688 {
 689         struct lustre_mount_data * lmd = data;
 690         char *lov = NULL, *lmv = NULL;
 691         struct ll_sb_info *sbi;
 692         int err;
 693         ENTRY;
 694
 695         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 696         if (lmd_bad_magic(lmd))
 697                 RETURN(-EINVAL);
 698
 699         sbi = lustre_init_sbi(sb);
 700         if (!sbi)
 701                 RETURN(-ENOMEM);
 702
 703         sbi->ll_flags |= LL_SBI_READAHEAD;
 704
 705         if (lmd->lmd_profile) {
 706                 struct lustre_profile *lprof;
 707                 struct config_llog_instance cfg;
 708                 int len;
 709
 710                 if (lmd->lmd_mds[0] == '\0') {
 711                         CERROR("no mds name\n");
 712                         GOTO(out_free, err = -EINVAL);
 713                 }
 714                 lmd->lmd_security[sizeof(lmd->lmd_security) - 1] = 0;
 715
 716                 OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 717                 if (sbi->ll_lmd == NULL)
 718                         GOTO(out_free, err = -ENOMEM);
 719                 memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
 720
 721                 /* generate a string unique to this super, let's try
 722                  the address of the super itself.*/
 723                 len = (sizeof(sb) * 2) + 1;
 724                 OBD_ALLOC(sbi->ll_instance, len);
 725                 if (sbi->ll_instance == NULL)
 726                         GOTO(out_free, err = -ENOMEM);
 727                 sprintf(sbi->ll_instance, "%p", sb);
 728
 729                 cfg.cfg_instance = sbi->ll_instance;
 730                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 731                 cfg.cfg_local_nid = lmd->lmd_local_nid;
 732                 err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
 733                 if (err < 0) {
 734                         CERROR("Unable to process log: %s\n", lmd->lmd_profile);
 735                         GOTO(out_free, err);
 736                 }
 737
 738                 lprof = class_get_profile(lmd->lmd_profile);
 739                 if (lprof == NULL) {
 740                         CERROR("No profile found: %s\n", lmd->lmd_profile);
 741                         GOTO(out_free, err = -EINVAL);
 742                 }
 743                 if (lov)
 744                         OBD_FREE(lov, strlen(lov) + 1);
 745                 OBD_ALLOC(lov, strlen(lprof->lp_lov) +
 746                           strlen(sbi->ll_instance) + 2);
 747                 sprintf(lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
 748
 749                 if (lmv)
 750                         OBD_FREE(lmv, strlen(lmv) + 1);
 751                 OBD_ALLOC(lmv, strlen(lprof->lp_lmv) +
 752                           strlen(sbi->ll_instance) + 2);
 753                 sprintf(lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
 754         }
 755
 756         if (!lov) {
 757                 CERROR("no osc\n");
 758                 GOTO(out_free, err = -EINVAL);
 759         }
 760
 761         if (!lmv) {
 762                 CERROR("no mdc\n");
 763                 GOTO(out_free, err = -EINVAL);
 764         }
 765
 766         err = lustre_common_fill_super(sb, lmv, lov, lmd->lmd_async,
 767                                        lmd->lmd_security, &lmd->lmd_nllu,
 768                                        &lmd->lmd_remote_flag);
 769
 770         if (err)
 771                 GOTO(out_free, err);
 772
 773 out_dev:
 774         if (lmv)
 775                 OBD_FREE(lmv, strlen(lmv) + 1);
 776         if (lov)
 777                 OBD_FREE(lov, strlen(lov) + 1);
 778
 779         RETURN(err);
 780
 781 out_free:
 782         if (sbi->ll_lmd) {
 783                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 784                 int err;
 785
 786                 if (sbi->ll_instance != NULL) {
 787                         struct lustre_mount_data *lmd = sbi->ll_lmd;
 788                         struct config_llog_instance cfg;
 789                         char *cl_prof;
 790
 791                         cfg.cfg_instance = sbi->ll_instance;
 792                         cfg.cfg_uuid = sbi->ll_sb_uuid;
 793
 794                         OBD_ALLOC(cl_prof, len);
 795                         sprintf(cl_prof, "%s-clean", lmd->lmd_profile);
 796                         err = lustre_process_log(lmd, cl_prof, &cfg, 0);
 797                         if (err < 0) {
 798                                 CERROR("Unable to process log: %s\n", cl_prof);
 799                                 lustre_manual_cleanup(sbi);
 800                         }
 801                         OBD_FREE(cl_prof, len);
 802                         OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 803                 }
 804                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 805         }
 806         lustre_free_sbi(sb);
 807         goto out_dev;
 808 } /* lustre_fill_super */
 809
 810 void lustre_put_super(struct super_block *sb)
 811 {
 812         struct obd_device *obd;
 813         struct ll_sb_info *sbi = ll_s2sbi(sb);
 814         int force_umount = 0;
 815         ENTRY;
 816
 817         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 818         obd = class_exp2obd(sbi->ll_md_exp);
 819         if (obd)
 820                 force_umount = obd->obd_no_recov;
 821         obd = NULL;
 822
 823         lustre_common_put_super(sb);
 824         if (sbi->ll_lmd != NULL) {
 825                 char *cl_prof;
 826                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 827                 int err;
 828                 struct config_llog_instance cfg;
 829
 830                 if (force_umount) {
 831                         CERROR("force umount, doing manual cleanup\n");
 832                         lustre_manual_cleanup(sbi);
 833                         GOTO(free_lmd, 0);
 834                 }
 835
 836                 cfg.cfg_instance = sbi->ll_instance;
 837                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 838
 839                 OBD_ALLOC(cl_prof, len);
 840                 sprintf(cl_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
 841                 err = lustre_process_log(sbi->ll_lmd, cl_prof, &cfg, 0);
 842                 if (err < 0) {
 843                         CERROR("Unable to process log: %s, doing manual cleanup"
 844                                "\n", cl_prof);
 845                         lustre_manual_cleanup(sbi);
 846                 }
 847
 848                 OBD_FREE(cl_prof, len);
 849         free_lmd:
 850                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 851                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 852         }
 853
 854         lustre_free_sbi(sb);
 855
 856         EXIT;
 857 } /* lustre_put_super */
 858
 859 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 860 {
 861         struct obd_export *md_exp = sbi->ll_md_exp;
 862         struct lustre_mount_data *lmd = sbi->ll_lmd;
 863         struct llog_ctxt *ctxt;
 864         struct config_llog_instance cfg;
 865         char *profile = lmd->lmd_profile, *name = NULL;
 866         int rc, namelen =  0, version;
 867         ENTRY;
 868
 869         if (profile == NULL)
 870                 RETURN(0);
 871         if (lmd == NULL) {
 872                 CERROR("Client not mounted with zero-conf; cannot process "
 873                        "update log.\n");
 874                 RETURN(0);
 875         }
 876
 877         rc = ldlm_cli_cancel_unused(md_exp->exp_obd->obd_namespace, NULL,
 878                                     LDLM_FL_CONFIG_CHANGE, NULL);
 879         if (rc != 0)
 880                 CWARN("ldlm_cli_cancel_unused(mdc): %d\n", rc);
 881
 882         rc = obd_cancel_unused(sbi->ll_dt_exp, NULL, LDLM_FL_CONFIG_CHANGE,
 883                                NULL);
 884         if (rc != 0)
 885                 CWARN("obd_cancel_unused(lov): %d\n", rc);
 886
 887         cfg.cfg_instance = sbi->ll_instance;
 888         cfg.cfg_uuid = sbi->ll_sb_uuid;
 889         cfg.cfg_local_nid = lmd->lmd_local_nid;
 890
 891         namelen = strlen(profile) + 20; /* -clean-######### */
 892         OBD_ALLOC(name, namelen);
 893         if (name == NULL)
 894                 RETURN(-ENOMEM);
 895
 896         if (clean) {
 897                 version = sbi->ll_config_version - 1;
 898                 sprintf(name, "%s-clean-%d", profile, version);
 899         } else {
 900                 version = sbi->ll_config_version + 1;
 901                 sprintf(name, "%s-%d", profile, version);
 902         }
 903
 904         CWARN("Applying configuration log %s\n", name);
 905
 906         ctxt = llog_get_context(&md_exp->exp_obd->obd_llogs,
 907                                 LLOG_CONFIG_REPL_CTXT);
 908         rc = class_config_process_llog(ctxt, name, &cfg);
 909         if (rc == 0)
 910                 sbi->ll_config_version = version;
 911         CWARN("Finished applying configuration log %s: %d\n", name, rc);
 912
 913         if (rc == 0 && clean == 0) {
 914                 struct lov_desc desc;
 915                 int rc, valsize;
 916                 valsize = sizeof(desc);
 917                 rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 918                                   "lovdesc", &valsize, &desc);
 919
 920                 rc = obd_init_ea_size(md_exp,
 921                                       obd_size_diskmd(sbi->ll_dt_exp, NULL),
 922                                       (desc.ld_tgt_count *
 923                                        sizeof(struct llog_cookie)));
 924         }
 925         OBD_FREE(name, namelen);
 926         RETURN(rc);
 927 }
 928
 929 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 930 {
 931         struct inode *inode = NULL;
 932         l_lock(&lock->l_resource->lr_namespace->ns_lock);
 933         if (lock->l_ast_data) {
 934                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
 935                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
 936                         inode = igrab(lock->l_ast_data);
 937                 } else {
 938                         inode = lock->l_ast_data;
 939                         CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
 940                                "l_ast_data %p is bogus: magic %0x8\n",
 941                                lock->l_ast_data, lli->lli_inode_magic);
 942                         inode = NULL;
 943                 }
 944         }
 945         l_unlock(&lock->l_resource->lr_namespace->ns_lock);
 946         return inode;
 947 }
 948
 949 int null_if_equal(struct ldlm_lock *lock, void *data)
 950 {
 951         if (data == lock->l_ast_data) {
 952                 lock->l_ast_data = NULL;
 953
 954                 if (lock->l_req_mode != lock->l_granted_mode)
 955                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
 956         }
 957
 958         return LDLM_ITER_CONTINUE;
 959 }
 960
 961 void ll_clear_inode(struct inode *inode)
 962 {
 963         struct lustre_id id;
 964         struct ll_inode_info *lli = ll_i2info(inode);
 965         struct ll_sb_info *sbi = ll_i2sbi(inode);
 966         ENTRY;
 967
 968         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
 969                inode->i_generation, inode);
 970
 971         lli->lli_inode_magic = LLI_INODE_DEAD;
 972         ll_inode2id(&id, inode);
 973
 974         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
 975         md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
 976
 977         LASSERT(!lli->lli_open_fd_write_count);
 978         LASSERT(!lli->lli_open_fd_read_count);
 979         LASSERT(!lli->lli_open_fd_exec_count);
 980
 981         if (lli->lli_mds_write_och)
 982                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
 983         if (lli->lli_mds_exec_och)
 984                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
 985         if (lli->lli_mds_read_och)
 986                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
 987
 988         if (lli->lli_smd)
 989                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
 990                                   null_if_equal, inode);
 991
 992         if (lli->lli_smd) {
 993                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
 994                 lli->lli_smd = NULL;
 995         }
 996
 997         if (lli->lli_mea) {
 998                 obd_free_memmd(sbi->ll_md_exp,
 999                                (struct lov_stripe_md **) &lli->lli_mea);
1000                 lli->lli_mea = NULL;
1001         }
1002
1003         if (lli->lli_symlink_name) {
1004                 OBD_FREE(lli->lli_symlink_name,
1005                          strlen(lli->lli_symlink_name) + 1);
1006                 lli->lli_symlink_name = NULL;
1007         }
1008         lli->lli_inode_magic = LLI_INODE_DEAD;
1009
1010         EXIT;
1011 }
1012
1013 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1014  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1015  * keep these values until such a time that objects are allocated for it.
1016  * We do the MDS operations first, as it is checking permissions for us.
1017  * We don't to the MDS RPC if there is nothing that we want to store there,
1018  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1019  * going to do an RPC anyways.
1020  *
1021  * If we are doing a truncate, we will send the mtime and ctime updates
1022  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1023  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1024  * at the same time.
1025  */
1026 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1027 {
1028         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1029         struct ll_sb_info *sbi = ll_i2sbi(inode);
1030         struct ptlrpc_request *request = NULL;
1031         struct mdc_op_data *op_data;
1032         int ia_valid = attr->ia_valid;
1033         int err, rc = 0;
1034         ENTRY;
1035
1036         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
1037         lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_SETATTR);
1038
1039         if (ia_valid & ATTR_SIZE) {
1040                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1041                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1042                                attr->ia_size, ll_file_maxbytes(inode));
1043                         RETURN(-EFBIG);
1044                 }
1045
1046                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1047         }
1048
1049         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1050         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1051                 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1052                         RETURN(-EPERM);
1053         }
1054
1055         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1056         if (attr->ia_valid & ATTR_CTIME) {
1057                 attr->ia_ctime = CURRENT_TIME;
1058                 attr->ia_valid |= ATTR_CTIME_SET;
1059         }
1060         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1061                 attr->ia_atime = CURRENT_TIME;
1062                 attr->ia_valid |= ATTR_ATIME_SET;
1063         }
1064         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1065                 attr->ia_mtime = CURRENT_TIME;
1066                 attr->ia_valid |= ATTR_MTIME_SET;
1067         }
1068
1069         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1070                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1071                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1072                        LTIME_S(CURRENT_TIME));
1073
1074         if (lsm)
1075                 attr->ia_valid &= ~ATTR_SIZE;
1076
1077         /* If only OST attributes being set on objects, don't do MDS RPC.
1078          * In that case, we need to check permissions and update the local
1079          * inode ourselves so we can call obdo_from_inode() always. */
1080         if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
1081                 struct lustre_md md;
1082
1083                 OBD_ALLOC(op_data, sizeof(*op_data));
1084                 if (op_data == NULL)
1085                         RETURN(-ENOMEM);
1086                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1087
1088                 rc = md_setattr(sbi->ll_md_exp, op_data,
1089                                 attr, NULL, 0, NULL, 0, &request);
1090                 OBD_FREE(op_data, sizeof(*op_data));
1091                 if (rc) {
1092                         ptlrpc_req_finished(request);
1093                         if (rc != -EPERM && rc != -EACCES)
1094                                 CERROR("md_setattr fails: rc = %d\n", rc);
1095                         RETURN(rc);
1096                 }
1097
1098                 rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
1099                                        sbi->ll_dt_exp, &md);
1100                 if (rc) {
1101                         ptlrpc_req_finished(request);
1102                         RETURN(rc);
1103                 }
1104
1105                 /* We call inode_setattr to adjust timestamps, but we first
1106                  * clear ATTR_SIZE to avoid invoking vmtruncate.
1107                  *
1108                  * NB: ATTR_SIZE will only be set at this point if the size
1109                  * resides on the MDS, ie, this file has no objects. */
1110                 attr->ia_valid &= ~ATTR_SIZE;
1111                 err = inode_setattr(inode, attr);
1112                 if (err) {
1113                         CERROR("inode_setattr() failed, inode=%lu/%u(%p), "
1114                                "err = %d\n", (unsigned long)inode->i_ino,
1115                                inode->i_generation, inode, err);
1116                         /* should we go to error path here? --umka */
1117                 }
1118
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                 if (err) {
1148                         CERROR("inode_setattr() failed, inode=%lu/%u(%p), "
1149                                "err = %d\n", (unsigned long)inode->i_ino,
1150                                inode->i_generation, inode, err);
1151                         /* should we go to error path here? --umka */
1152                 }
1153         }
1154
1155         /* We really need to get our PW lock before we change inode->i_size.
1156          * If we don't we can race with other i_size updaters on our node, like
1157          * ll_file_read.  We can also race with i_size propogation to other
1158          * nodes through dirtying and writeback of final cached pages.  This
1159          * last one is especially bad for racing o_append users on other
1160          * nodes. */
1161         if (ia_valid & ATTR_SIZE) {
1162                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1163                                                            OBD_OBJECT_EOF } };
1164                 struct lustre_handle lockh = { 0 };
1165                 struct ll_inode_info *lli = ll_i2info(inode);
1166                 int err, ast_flags = 0;
1167                 /* XXX when we fix the AST intents to pass the discard-range
1168                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1169                  * XXX here. */
1170                 if (attr->ia_size == 0)
1171                         ast_flags = LDLM_AST_DISCARD_DATA;
1172
1173                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1174                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
1175
1176                 if (rc != 0)
1177                         RETURN(rc);
1178
1179                 down(&lli->lli_size_sem);
1180                 lli->lli_size_pid = current->pid;
1181                 rc = vmtruncate(inode, attr->ia_size);
1182                 if (rc != 0) {
1183                         LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1184                         lli->lli_size_pid = 0;
1185                         up(&lli->lli_size_sem);
1186                 }
1187
1188                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1189                 if (err) {
1190                         CERROR("ll_extent_unlock failed: %d\n", err);
1191                         if (!rc)
1192                                 rc = err;
1193                 }
1194         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1195                 struct obdo *oa = NULL;
1196
1197                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1198                        inode->i_ino, LTIME_S(attr->ia_mtime));
1199
1200                 oa = obdo_alloc();
1201                 if (oa == NULL)
1202                         RETURN(-ENOMEM);
1203
1204                 oa->o_id = lsm->lsm_object_id;
1205                 oa->o_gr = lsm->lsm_object_gr;
1206                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1207                 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1208                                 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1209                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1210                 obdo_free(oa);
1211                 if (rc)
1212                         CERROR("obd_setattr fails: rc = %d\n", rc);
1213         }
1214         RETURN(rc);
1215 }
1216
1217 int ll_setattr(struct dentry *de, struct iattr *attr)
1218 {
1219         LASSERT(de->d_inode);
1220         return ll_setattr_raw(de->d_inode, attr);
1221 }
1222
1223 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1224                        unsigned long max_age)
1225 {
1226         struct ll_sb_info *sbi = ll_s2sbi(sb);
1227         struct obd_statfs obd_osfs;
1228         int rc;
1229         ENTRY;
1230
1231         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1232         if (rc) {
1233                 CERROR("obd_statfs fails: rc = %d\n", rc);
1234                 RETURN(rc);
1235         }
1236
1237         osfs->os_type = sb->s_magic;
1238
1239         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1240                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1241
1242         rc = obd_statfs(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
1243         if (rc) {
1244                 CERROR("obd_statfs fails: rc = %d\n", rc);
1245                 RETURN(rc);
1246         }
1247
1248         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1249                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1250                obd_osfs.os_files);
1251
1252         osfs->os_blocks = obd_osfs.os_blocks;
1253         osfs->os_bfree = obd_osfs.os_bfree;
1254         osfs->os_bavail = obd_osfs.os_bavail;
1255
1256         /* If we don't have as many objects free on the OST as inodes
1257          * on the MDS, we reduce the total number of inodes to
1258          * compensate, so that the "inodes in use" number is correct.
1259          */
1260         if (obd_osfs.os_ffree < osfs->os_ffree) {
1261                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1262                         obd_osfs.os_ffree;
1263                 osfs->os_ffree = obd_osfs.os_ffree;
1264         }
1265
1266         RETURN(rc);
1267 }
1268
1269 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1270 {
1271         struct obd_statfs osfs;
1272         int rc;
1273
1274         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p\n", sb);
1275         lprocfs_counter_incr(ll_s2sbi(sb)->ll_stats, LPROC_LL_STAFS);
1276
1277         /* For now we will always get up-to-date statfs values, but in the
1278          * future we may allow some amount of caching on the client (e.g.
1279          * from QOS or lprocfs updates). */
1280         rc = ll_statfs_internal(sb, &osfs, jiffies - 1);
1281         if (rc)
1282                 return rc;
1283
1284         statfs_unpack(sfs, &osfs);
1285
1286         if (sizeof(sfs->f_blocks) == 4) {
1287                 while (osfs.os_blocks > ~0UL) {
1288                         sfs->f_bsize <<= 1;
1289
1290                         osfs.os_blocks >>= 1;
1291                         osfs.os_bfree >>= 1;
1292                         osfs.os_bavail >>= 1;
1293                 }
1294         }
1295
1296         sfs->f_blocks = osfs.os_blocks;
1297         sfs->f_bfree = osfs.os_bfree;
1298         sfs->f_bavail = osfs.os_bavail;
1299
1300         return 0;
1301 }
1302
1303 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1304 {
1305         struct ll_inode_info *lli = ll_i2info(inode);
1306         struct lov_stripe_md *lsm = md->lsm;
1307         struct mds_body *body = md->body;
1308         struct mea *mea = md->mea;
1309         struct posix_acl *ll_acl_access = md->acl_access;
1310         ENTRY;
1311
1312         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1313
1314         if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
1315                 /* check for default striping info for dir. */
1316                 LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
1317         }
1318
1319         if (lsm != NULL) {
1320                 LASSERT(lsm->lsm_object_gr > 0);
1321                 if (lli->lli_smd == NULL) {
1322                         lli->lli_smd = lsm;
1323                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1324                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1325                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1326                 } else {
1327                         int i;
1328                         if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
1329                                 CERROR("lsm mismatch for inode %ld\n",
1330                                        inode->i_ino);
1331                                 CERROR("lli_smd:\n");
1332                                 dump_lsm(D_ERROR, lli->lli_smd);
1333                                 CERROR("lsm:\n");
1334                                 dump_lsm(D_ERROR, lsm);
1335                                 LBUG();
1336                         }
1337                         /* XXX FIXME -- We should decide on a safer (atomic) and
1338                          * more elegant way to update the lsm */
1339                         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1340                                 lli->lli_smd->lsm_oinfo[i].loi_id =
1341                                         lsm->lsm_oinfo[i].loi_id;
1342                                 lli->lli_smd->lsm_oinfo[i].loi_gr =
1343                                         lsm->lsm_oinfo[i].loi_gr;
1344                                 lli->lli_smd->lsm_oinfo[i].loi_ost_idx =
1345                                         lsm->lsm_oinfo[i].loi_ost_idx;
1346                                 lli->lli_smd->lsm_oinfo[i].loi_ost_gen =
1347                                         lsm->lsm_oinfo[i].loi_ost_gen;
1348                         }
1349                 }
1350                 /* bug 2844 - limit i_blksize for broken user-space apps */
1351                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
1352                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
1353                 if (lli->lli_smd != lsm)
1354                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1355         }
1356
1357         if (mea != NULL) {
1358                 if (lli->lli_mea == NULL) {
1359                         lli->lli_mea = mea;
1360                 } else {
1361                         if (memcmp(lli->lli_mea, mea, body->eadatasize)) {
1362                                 CERROR("mea mismatch for inode %lu\n",
1363                                         inode->i_ino);
1364                                 LBUG();
1365                         }
1366                 }
1367                 if (lli->lli_mea != mea)
1368                         obd_free_memmd(ll_i2mdexp(inode),
1369                                        (struct lov_stripe_md **) &mea);
1370         }
1371
1372         if (body->valid & OBD_MD_FID)
1373                 id_assign_fid(&lli->lli_id, &body->id1);
1374
1375         if (body->valid & OBD_MD_FLID)
1376                 id_ino(&lli->lli_id) = id_ino(&body->id1);
1377
1378         if (body->valid & OBD_MD_FLGENER)
1379                 id_gen(&lli->lli_id) = id_gen(&body->id1);
1380
1381         spin_lock(&lli->lli_lock);
1382         if (ll_acl_access != NULL) {
1383                 if (lli->lli_acl_access != NULL)
1384                         posix_acl_release(lli->lli_acl_access);
1385                 lli->lli_acl_access = ll_acl_access;
1386         }
1387         spin_unlock(&lli->lli_lock);
1388
1389         if (body->valid & OBD_MD_FLID)
1390                 inode->i_ino = id_ino(&body->id1);
1391         if (body->valid & OBD_MD_FLGENER)
1392                 inode->i_generation = id_gen(&body->id1);
1393         if (body->valid & OBD_MD_FLATIME)
1394                 LTIME_S(inode->i_atime) = body->atime;
1395         if (body->valid & OBD_MD_FLMTIME &&
1396             body->mtime > LTIME_S(inode->i_mtime)) {
1397                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %u\n",
1398                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
1399                 LTIME_S(inode->i_mtime) = body->mtime;
1400         }
1401         if (body->valid & OBD_MD_FLCTIME &&
1402             body->ctime > LTIME_S(inode->i_ctime))
1403                 LTIME_S(inode->i_ctime) = body->ctime;
1404         if (body->valid & OBD_MD_FLMODE) {
1405                 inode->i_mode = (inode->i_mode & S_IFMT) |
1406                         (body->mode & ~S_IFMT);
1407         }
1408         if (body->valid & OBD_MD_FLTYPE) {
1409                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1410                         (body->mode & S_IFMT);
1411         }
1412         if (body->valid & OBD_MD_FLUID)
1413                 inode->i_uid = body->uid;
1414         if (body->valid & OBD_MD_FLGID)
1415                 inode->i_gid = body->gid;
1416         if (body->valid & OBD_MD_FLFLAGS)
1417                 inode->i_flags = body->flags;
1418         if (body->valid & OBD_MD_FLNLINK)
1419                 inode->i_nlink = body->nlink;
1420         if (body->valid & OBD_MD_FLRDEV)
1421 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1422                 inode->i_rdev = body->rdev;
1423 #else
1424                 inode->i_rdev = old_decode_dev(body->rdev);
1425 #endif
1426         if (body->valid & OBD_MD_FLSIZE)
1427                 inode->i_size = body->size;
1428         if (body->valid & OBD_MD_FLBLOCKS)
1429                 inode->i_blocks = body->blocks;
1430
1431         if (body->valid & OBD_MD_FLSIZE)
1432                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
1433
1434 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1435         inode->i_dev = (kdev_t)id_group(&lli->lli_id);
1436 #endif
1437         LASSERT(id_fid(&lli->lli_id) != 0);
1438 }
1439
1440 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
1441 static struct backing_dev_info ll_backing_dev_info = {
1442         .ra_pages       = 0,    /* No readahead */
1443         .memory_backed  = 0,    /* Does contribute to dirty memory */
1444 };
1445 #endif
1446
1447 void ll_read_inode2(struct inode *inode, void *opaque)
1448 {
1449         struct lustre_md *md = opaque;
1450         struct ll_inode_info *lli = ll_i2info(inode);
1451         ENTRY;
1452
1453         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1454                inode->i_generation, inode);
1455
1456         ll_lli_init(lli);
1457
1458         LASSERT(!lli->lli_smd);
1459
1460         /* Core attributes from the MDS first.  This is a new inode, and
1461          * the VFS doesn't zero times in the core inode so we have to do
1462          * it ourselves.  They will be overwritten by either MDS or OST
1463          * attributes - we just need to make sure they aren't newer. */
1464         LTIME_S(inode->i_mtime) = 0;
1465         LTIME_S(inode->i_atime) = 0;
1466         LTIME_S(inode->i_ctime) = 0;
1467
1468         inode->i_rdev = 0;
1469         ll_update_inode(inode, md);
1470
1471         /* OIDEBUG(inode); */
1472
1473         if (S_ISREG(inode->i_mode)) {
1474                 inode->i_op = &ll_file_inode_operations;
1475                 inode->i_fop = &ll_file_operations;
1476                 inode->i_mapping->a_ops = &ll_aops;
1477                 EXIT;
1478         } else if (S_ISDIR(inode->i_mode)) {
1479                 inode->i_op = &ll_dir_inode_operations;
1480                 inode->i_fop = &ll_dir_operations;
1481                 inode->i_mapping->a_ops = &ll_dir_aops;
1482                 EXIT;
1483         } else if (S_ISLNK(inode->i_mode)) {
1484                 inode->i_op = &ll_fast_symlink_inode_operations;
1485                 EXIT;
1486         } else {
1487                 inode->i_op = &ll_special_inode_operations;
1488
1489 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1490                 init_special_inode(inode, inode->i_mode,
1491                                    kdev_t_to_nr(inode->i_rdev));
1492
1493                 /* initializing backing dev info. */
1494                 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1495 #else
1496                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1497 #endif
1498                 lli->ll_save_ifop = inode->i_fop;
1499
1500                 if (S_ISCHR(inode->i_mode))
1501                         inode->i_fop = &ll_special_chr_inode_fops;
1502                 else if (S_ISBLK(inode->i_mode))
1503                         inode->i_fop = &ll_special_blk_inode_fops;
1504                 else if (S_ISFIFO(inode->i_mode))
1505                         inode->i_fop = &ll_special_fifo_inode_fops;
1506                 else if (S_ISSOCK(inode->i_mode))
1507                         inode->i_fop = &ll_special_sock_inode_fops;
1508
1509                 CWARN("saved %p, replaced with %p\n", lli->ll_save_ifop,
1510                       inode->i_fop);
1511
1512                 if (lli->ll_save_ifop->owner) {
1513                         CWARN("%p has owner %p\n", lli->ll_save_ifop,
1514                               lli->ll_save_ifop->owner);
1515                 }
1516                 EXIT;
1517         }
1518 }
1519
1520 void ll_delete_inode(struct inode *inode)
1521 {
1522         struct ll_sb_info *sbi = ll_i2sbi(inode);
1523         struct lustre_id id;
1524         int rc;
1525         ENTRY;
1526
1527         ll_inode2id(&id, inode);
1528
1529         rc = md_delete_inode(sbi->ll_md_exp, &id);
1530         if (rc) {
1531                 CERROR("md_delete_inode() failed, error %d\n",
1532                        rc);
1533         }
1534
1535         clear_inode(inode);
1536         EXIT;
1537 }
1538
1539 int ll_iocontrol(struct inode *inode, struct file *file,
1540                  unsigned int cmd, unsigned long arg)
1541 {
1542         struct ll_sb_info *sbi = ll_i2sbi(inode);
1543         struct ptlrpc_request *req = NULL;
1544         int rc, flags = 0;
1545         ENTRY;
1546
1547         switch(cmd) {
1548         case EXT3_IOC_GETFLAGS: {
1549                 struct lustre_id id;
1550                 __u64 valid = OBD_MD_FLFLAGS;
1551                 struct mds_body *body;
1552
1553                 ll_inode2id(&id, inode);
1554                 rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, 0, 0, &req);
1555                 if (rc) {
1556                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1557                         RETURN(-abs(rc));
1558                 }
1559
1560                 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
1561
1562                 if (body->flags & S_APPEND)
1563                         flags |= EXT3_APPEND_FL;
1564                 if (body->flags & S_IMMUTABLE)
1565                         flags |= EXT3_IMMUTABLE_FL;
1566                 if (body->flags & S_NOATIME)
1567                         flags |= EXT3_NOATIME_FL;
1568
1569                 ptlrpc_req_finished (req);
1570
1571                 RETURN(put_user(flags, (int *)arg));
1572         }
1573         case EXT3_IOC_SETFLAGS: {
1574                 struct mdc_op_data *op_data;
1575                 struct iattr attr;
1576                 struct obdo *oa;
1577                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1578
1579                 if (get_user(flags, (int *)arg))
1580                         RETURN(-EFAULT);
1581
1582                 oa = obdo_alloc();
1583                 if (!oa)
1584                         RETURN(-ENOMEM);
1585
1586                 OBD_ALLOC(op_data, sizeof(*op_data));
1587                 if (op_data == NULL) {
1588                         obdo_free(oa);
1589                         RETURN(-ENOMEM);
1590                 }
1591                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1592
1593                 memset(&attr, 0x0, sizeof(attr));
1594                 attr.ia_attr_flags = flags;
1595                 attr.ia_valid |= ATTR_ATTR_FLAG;
1596
1597                 rc = md_setattr(sbi->ll_md_exp, op_data,
1598                                 &attr, NULL, 0, NULL, 0, &req);
1599                 OBD_FREE(op_data, sizeof(*op_data));
1600                 if (rc) {
1601                         ptlrpc_req_finished(req);
1602                         if (rc != -EPERM && rc != -EACCES)
1603                                 CERROR("md_setattr fails: rc = %d\n", rc);
1604                         obdo_free(oa);
1605                         RETURN(rc);
1606                 }
1607                 ptlrpc_req_finished(req);
1608
1609                 oa->o_id = lsm->lsm_object_id;
1610                 oa->o_gr = lsm->lsm_object_gr;
1611                 oa->o_flags = flags;
1612                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1613
1614                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1615                 obdo_free(oa);
1616                 if (rc) {
1617                         if (rc != -EPERM && rc != -EACCES)
1618                                 CERROR("md_setattr fails: rc = %d\n", rc);
1619                         RETURN(rc);
1620                 }
1621
1622                 if (flags & EXT3_APPEND_FL)
1623                         inode->i_flags |= S_APPEND;
1624                 else
1625                         inode->i_flags &= ~S_APPEND;
1626                 if (flags & EXT3_IMMUTABLE_FL)
1627                         inode->i_flags |= S_IMMUTABLE;
1628                 else
1629                         inode->i_flags &= ~S_IMMUTABLE;
1630                 if (flags & EXT3_NOATIME_FL)
1631                         inode->i_flags |= S_NOATIME;
1632                 else
1633                         inode->i_flags &= ~S_NOATIME;
1634
1635                 RETURN(0);
1636         }
1637         default:
1638                 RETURN(-ENOSYS);
1639         }
1640
1641         RETURN(0);
1642 }
1643
1644 /* this is only called in the case of forced umount. */
1645 void ll_umount_begin(struct super_block *sb)
1646 {
1647         struct ll_sb_info *sbi = ll_s2sbi(sb);
1648         struct obd_ioctl_data ioc_data = { 0 };
1649         struct obd_device *obd;
1650         ENTRY;
1651
1652         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1653                sb->s_count, atomic_read(&sb->s_active));
1654
1655         obd = class_exp2obd(sbi->ll_md_exp);
1656         if (obd == NULL) {
1657                 CERROR("Invalid MDC connection handle "LPX64"\n",
1658                        sbi->ll_md_exp->exp_handle.h_cookie);
1659                 EXIT;
1660                 return;
1661         }
1662         obd->obd_no_recov = 1;
1663         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1664                       sizeof(ioc_data), &ioc_data, NULL);
1665
1666         obd = class_exp2obd(sbi->ll_dt_exp);
1667         if (obd == NULL) {
1668                 CERROR("Invalid LOV connection handle "LPX64"\n",
1669                        sbi->ll_dt_exp->exp_handle.h_cookie);
1670                 EXIT;
1671                 return;
1672         }
1673
1674         obd->obd_no_recov = 1;
1675         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1676                       sizeof(ioc_data), &ioc_data, NULL);
1677
1678         /*
1679          * really, we'd like to wait until there are no requests outstanding,
1680          * and then continue.  For now, we just invalidate the requests,
1681          * schedule, and hope.
1682          */
1683         schedule();
1684
1685         EXIT;
1686 }
1687
1688 int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
1689                   struct inode **inode, struct ptlrpc_request *req,
1690                   int offset, struct super_block *sb)
1691 {
1692         struct lustre_md md;
1693         int rc = 0;
1694
1695         rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
1696         if (rc)
1697                 RETURN(rc);
1698
1699         if (*inode) {
1700                 ll_update_inode(*inode, &md);
1701         } else {
1702                 LASSERT(sb);
1703                 *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
1704                 if (*inode == NULL || is_bad_inode(*inode)) {
1705                         /* free the lsm if we allocated one above */
1706                         if (md.lsm != NULL)
1707                                 obd_free_memmd(dt_exp, &md.lsm);
1708                         if (md.mea != NULL)
1709                                 obd_free_memmd(md_exp,
1710                                                (struct lov_stripe_md**)&md.mea);
1711                         rc = -ENOMEM;
1712                         CERROR("new_inode -fatal: rc %d\n", rc);
1713                 }
1714         }
1715
1716         RETURN(rc);
1717 }
1718
1719 int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
1720                char *filename, struct lustre_id *ret)
1721 {
1722         struct ptlrpc_request *request = NULL;
1723         struct mds_body *body;
1724         int rc;
1725
1726         rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
1727                              OBD_MD_FID, 0, &request);
1728         if (rc < 0) {
1729                 CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
1730                        filename, rc);
1731                 return rc;
1732         }
1733
1734         body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
1735         LASSERT(body != NULL);
1736         LASSERT_REPSWABBED(request, 0);
1737
1738         *ret = body->id1;
1739         ptlrpc_req_finished(request);
1740
1741         return rc;
1742 }