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_pending_dentry = NULL;
  87         atomic_set(&sbi->ll_gns_enabled, 1);
  88         sbi->ll_gns_tick = GNS_TICK_TIMEOUT;
  89         sbi->ll_gns_timeout = GNS_MOUNT_TIMEOUT;
  90
  91         sbi->ll_gns_timer.data = (unsigned long)sbi;
  92         sbi->ll_gns_timer.function = ll_gns_timer_callback;
  93         init_timer(&sbi->ll_gns_timer);
  94
  95         ll_set_sbi(sb, sbi);
  96
  97         generate_random_uuid(uuid);
  98         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
  99         RETURN(sbi);
 100 }
 101
 102 void lustre_free_sbi(struct super_block *sb)
 103 {
 104         struct ll_sb_info *sbi = ll_s2sbi(sb);
 105         ENTRY;
 106
 107         if (sbi != NULL) {
 108                 list_del(&sbi->ll_gns_sbi_head);
 109                 del_timer(&sbi->ll_gns_timer);
 110                 OBD_FREE(sbi, sizeof(*sbi));
 111         }
 112         ll_set_sbi(sb, NULL);
 113         EXIT;
 114 }
 115
 116 int lustre_init_dt_desc(struct ll_sb_info *sbi)
 117 {
 118         __u32 valsize;
 119         int rc = 0;
 120         ENTRY;
 121
 122         valsize = sizeof(sbi->ll_dt_desc);
 123         memset(&sbi->ll_dt_desc, 0, sizeof(sbi->ll_dt_desc));
 124         rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 125                           "lovdesc", &valsize, &sbi->ll_dt_desc);
 126         RETURN(rc);
 127 }
 128
 129 extern struct dentry_operations ll_d_ops;
 130
 131 int lustre_common_fill_super(struct super_block *sb, char *lmv, char *lov,
 132                              int async,  char *mds_security,  char *oss_security,
 133                              __u32 *nllu, __u64 *remote)
 134 {
 135         struct ll_sb_info *sbi = ll_s2sbi(sb);
 136         struct ptlrpc_request *request = NULL;
 137         struct lustre_handle dt_conn = {0, };
 138         struct lustre_handle md_conn = {0, };
 139         struct obd_connect_data *data;
 140         struct inode *root = NULL;
 141         struct obd_device *obd;
 142         struct obd_statfs osfs;
 143         struct lustre_md md;
 144         __u32 valsize;
 145         int err;
 146         ENTRY;
 147
 148         obd = class_name2obd(lmv);
 149         if (!obd) {
 150                 CERROR("MDC %s: not setup or attached\n", lmv);
 151                 RETURN(-EINVAL);
 152         }
 153         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 154                      sizeof(async), &async);
 155
 156         if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
 157             (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
 158                 CERROR("wrong remote flag "LPX64"\n", *remote);
 159                 RETURN(-EINVAL);
 160         }
 161
 162         OBD_ALLOC(data, sizeof(*data));
 163         if (!data)
 164                 RETURN(-ENOMEM);
 165
 166         data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
 167                                               OBD_CONNECT_REMOTE);
 168         memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
 169
 170         if (mds_security == NULL)
 171                 mds_security = "null";
 172
 173         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 174                            strlen(mds_security), mds_security);
 175         if (err) {
 176                 CERROR("LMV %s: failed to set security %s, err %d\n",
 177                         lmv, mds_security, err);
 178                 OBD_FREE(data, sizeof(*data));
 179                 RETURN(err);
 180         }
 181
 182         if (proc_lustre_fs_root) {
 183                 err = lprocfs_register_mountpoint(proc_lustre_fs_root,
 184                                                   sb, lov, lmv);
 185                 if (err < 0)
 186                         CERROR("could not register mount in /proc/lustre");
 187         }
 188
 189         err = obd_connect(&md_conn, obd, &sbi->ll_sb_uuid, data,
 190                           OBD_OPT_REAL_CLIENT);
 191         if (err == -EBUSY) {
 192                 CERROR("An MDS (lmv %s) is performing recovery, of which this"
 193                        " client is not a part.  Please wait for recovery to "
 194                        "complete, abort, or time out.\n", lmv);
 195                 GOTO(out, err);
 196         } else if (err) {
 197                 CERROR("cannot connect to %s: rc = %d\n", lmv, err);
 198                 GOTO(out, err);
 199         }
 200         sbi->ll_md_exp = class_conn2export(&md_conn);
 201         err = obd_statfs(obd, &osfs, jiffies - HZ);
 202         if (err)
 203                 GOTO(out_lmv, err);
 204
 205         if (!osfs.os_bsize) {
 206                 CERROR("Invalid block size is detected.");
 207                 GOTO(out_lmv, err);
 208         }
 209
 210         sb->s_magic = LL_SUPER_MAGIC;
 211         sb->s_blocksize = osfs.os_bsize;
 212         sb->s_blocksize_bits = log2(osfs.os_bsize);
 213         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 214
 215         /* in 2.6.x FS is not allowed to form s_dev */
 216 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 217         {
 218                 kdev_t devno;
 219
 220                 devno = get_uuid2int((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid,
 221                                      strlen((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
 222
 223                 sb->s_dev = devno;
 224         }
 225 #endif
 226
 227         /* after statfs, we are supposed to have connected to MDSs,
 228          * so it's ok to check remote flag returned.
 229          */
 230         valsize = sizeof(&sbi->ll_remote);
 231         err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
 232                            &valsize, &sbi->ll_remote);
 233         if (err) {
 234                 CERROR("fail to obtain remote flag\n");
 235                 GOTO(out, err);
 236         }
 237
 238         obd = class_name2obd(lov);
 239         if (!obd) {
 240                 CERROR("OSC %s: not setup or attached\n", lov);
 241                 GOTO(out_lmv, err);
 242         }
 243         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 244                      sizeof(async), &async);
 245
 246        if (oss_security == NULL)
 247                 oss_security = "null";
 248
 249         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 250                            strlen(oss_security), oss_security);
 251         if (err) {
 252                 CERROR("LOV %s: failed to set security %s, err %d\n",
 253                         lov, oss_security, err);
 254                 OBD_FREE(data, sizeof(*data));
 255                 RETURN(err);
 256         }
 257
 258         err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data, 0);
 259         if (err == -EBUSY) {
 260                 CERROR("An OST (lov %s) is performing recovery, of which this"
 261                        " client is not a part.  Please wait for recovery to "
 262                        "complete, abort, or time out.\n", lov);
 263                 GOTO(out, err);
 264         } else if (err) {
 265                 CERROR("cannot connect to %s: rc = %d\n", lov, err);
 266                 GOTO(out_lmv, err);
 267         }
 268         sbi->ll_dt_exp = class_conn2export(&dt_conn);
 269
 270         err = lustre_init_dt_desc(sbi);
 271         if (err == 0) {
 272                 int mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 273                 obd_init_ea_size(sbi->ll_md_exp, mdsize,
 274                                  sbi->ll_dt_desc.ld_tgt_count *
 275                                  sizeof(struct llog_cookie));
 276         }
 277
 278         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
 279         if (err) {
 280                 CERROR("cannot mds_connect: rc = %d\n", err);
 281                 GOTO(out_lov, err);
 282         }
 283         CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 284
 285         sb->s_op = &lustre_super_operations;
 286
 287         /* make root inode */
 288         err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
 289                          (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID),
 290                          NULL, 0, 0, &request);
 291         if (err) {
 292                 CERROR("md_getattr failed for root: rc = %d\n", err);
 293                 GOTO(out_lov, err);
 294         }
 295
 296         err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
 297                                 sbi->ll_dt_exp, &md);
 298         if (err) {
 299                 CERROR("failed to understand root inode md: rc = %d\n", err);
 300                 ptlrpc_req_finished(request);
 301                 GOTO(out_lov, err);
 302         }
 303
 304         LASSERT(id_ino(&sbi->ll_rootid) != 0);
 305         root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 306
 307         ptlrpc_req_finished(request);
 308
 309         if (root == NULL || is_bad_inode(root)) {
 310                 if (md.lsm != NULL)
 311                     obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
 312                 if (md.mea != NULL)
 313                     obd_free_memmd(sbi->ll_md_exp,
 314                                    (struct lov_stripe_md**)&md.mea);
 315                 CERROR("lustre_lite: bad iget4 for root\n");
 316                 GOTO(out_root, err = -EBADF);
 317         }
 318
 319         err = ll_close_thread_start(&sbi->ll_lcq);
 320         if (err) {
 321                 CERROR("cannot start close thread: rc %d\n", err);
 322                 GOTO(out_root, err);
 323         }
 324
 325         ll_gns_add_timer(sbi);
 326
 327         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
 328            backing dev info assigned to inode mapping is used for
 329            determining maximal readahead. */
 330 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
 331     !defined(KERNEL_HAS_AS_MAX_READAHEAD)
 332         /* bug 2805 - set VM readahead to zero */
 333         vm_max_readahead = vm_min_readahead = 0;
 334 #endif
 335
 336         sb->s_root = d_alloc_root(root);
 337         sb->s_root->d_op = &ll_d_ops;
 338
 339         sb->s_flags |= MS_POSIXACL;
 340 #ifdef S_PDIROPS
 341         CWARN("Enabling PDIROPS\n");
 342         sb->s_flags |= S_PDIROPS;
 343 #endif
 344
 345         if (data != NULL)
 346                 OBD_FREE(data, sizeof(*data));
 347         RETURN(err);
 348 out_root:
 349         if (root)
 350                 iput(root);
 351 out_lov:
 352         obd_disconnect(sbi->ll_dt_exp, 0);
 353 out_lmv:
 354         obd_disconnect(sbi->ll_md_exp, 0);
 355 out:
 356         if (data != NULL)
 357                 OBD_FREE(data, sizeof(*data));
 358         lprocfs_unregister_mountpoint(sbi);
 359         return err;
 360 }
 361
 362 void lustre_common_put_super(struct super_block *sb)
 363 {
 364         struct ll_sb_info *sbi = ll_s2sbi(sb);
 365         struct hlist_node *tmp, *next;
 366         ENTRY;
 367
 368         ll_gns_del_timer(sbi);
 369         ll_close_thread_shutdown(sbi->ll_lcq);
 370
 371         list_del(&sbi->ll_conn_chain);
 372         obd_disconnect(sbi->ll_dt_exp, 0);
 373
 374         lprocfs_unregister_mountpoint(sbi);
 375         if (sbi->ll_proc_root) {
 376                 lprocfs_remove(sbi->ll_proc_root);
 377                 sbi->ll_proc_root = NULL;
 378         }
 379
 380         obd_disconnect(sbi->ll_md_exp, 0);
 381
 382         // We do this to get rid of orphaned dentries. That is not really trw.
 383         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
 384                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
 385                 CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
 386                       dentry->d_name.len, dentry->d_name.name, dentry, next);
 387                 shrink_dcache_parent(dentry);
 388         }
 389         EXIT;
 390 }
 391
 392 char *ll_read_opt(const char *opt, char *data)
 393 {
 394         char *value;
 395         char *retval;
 396         ENTRY;
 397
 398         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 399         if (strncmp(opt, data, strlen(opt)))
 400                 RETURN(NULL);
 401         if ((value = strchr(data, '=')) == NULL)
 402                 RETURN(NULL);
 403
 404         value++;
 405         OBD_ALLOC(retval, strlen(value) + 1);
 406         if (!retval) {
 407                 CERROR("out of memory!\n");
 408                 RETURN(NULL);
 409         }
 410
 411         memcpy(retval, value, strlen(value)+1);
 412         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 413         RETURN(retval);
 414 }
 415
 416 int ll_set_opt(const char *opt, char *data, int fl)
 417 {
 418         ENTRY;
 419
 420         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 421         if (strncmp(opt, data, strlen(opt)))
 422                 RETURN(0);
 423         else
 424                 RETURN(fl);
 425 }
 426
 427 void ll_options(char *options, char **lov, char **lmv, char **mds_sec,
 428                 char **oss_sec, int *async, int *flags)
 429 {
 430         char *this_char;
 431 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 432         char *opt_ptr = options;
 433 #endif
 434         ENTRY;
 435
 436         if (!options) {
 437                 EXIT;
 438                 return;
 439         }
 440
 441         *async = 0;
 442 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 443         for (this_char = strtok (options, ",");
 444              this_char != NULL;
 445              this_char = strtok (NULL, ",")) {
 446 #else
 447         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 448 #endif
 449                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
 450                 if (!*lov && (*lov = ll_read_opt("osc", this_char)))
 451                         continue;
 452                 if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
 453                         continue;
 454                 if (!strncmp(this_char, "lasync", strlen("lasync"))) {
 455                         *async = 1;
 456                         continue;
 457                 }
 458                 if (!*mds_sec && (*mds_sec = ll_read_opt("mds_sec", this_char)))
 459                         continue;
 460                 if (!*oss_sec && (*oss_sec = ll_read_opt("oss_sec", this_char)))
 461                         continue;
 462                 if (!(*flags & LL_SBI_NOLCK) &&
 463                     ((*flags) = (*flags) |
 464                                 ll_set_opt("nolock", this_char,
 465                                            LL_SBI_NOLCK)))
 466                         continue;
 467         }
 468
 469         EXIT;
 470 }
 471
 472 void ll_lli_init(struct ll_inode_info *lli)
 473 {
 474         sema_init(&lli->lli_open_sem, 1);
 475         sema_init(&lli->lli_size_sem, 1);
 476         lli->lli_flags = 0;
 477         lli->lli_size_pid = 0;
 478         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 479         spin_lock_init(&lli->lli_lock);
 480         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
 481         lli->lli_inode_magic = LLI_INODE_MAGIC;
 482         memset(&lli->lli_id, 0, sizeof(lli->lli_id));
 483         sema_init(&lli->lli_och_sem, 1);
 484         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
 485         lli->lli_mds_exec_och = NULL;
 486         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
 487         lli->lli_open_fd_exec_count = 0;
 488 }
 489
 490 int ll_fill_super(struct super_block *sb, void *data, int silent)
 491 {
 492         struct ll_sb_info *sbi;
 493         char *lov = NULL;
 494         char *lmv = NULL;
 495         char *mds_sec = NULL;
 496         char *oss_sec = NULL;
 497         int async, err;
 498         __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
 499         __u64 remote_flag = 0;
 500         ENTRY;
 501
 502         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 503
 504         sbi = lustre_init_sbi(sb);
 505         if (!sbi)
 506                 RETURN(-ENOMEM);
 507
 508         sbi->ll_flags |= LL_SBI_READAHEAD;
 509         ll_options(data, &lov, &lmv, &mds_sec, &oss_sec,
 510                    &async, &sbi->ll_flags);
 511
 512         if (!lov) {
 513                 CERROR("no osc\n");
 514                 GOTO(out, err = -EINVAL);
 515         }
 516
 517         if (!lmv) {
 518                 CERROR("no mdc\n");
 519                 GOTO(out, err = -EINVAL);
 520         }
 521
 522         err = lustre_common_fill_super(sb, lmv, lov, async, mds_sec, oss_sec,
 523                                        nllu, &remote_flag);
 524         EXIT;
 525 out:
 526         if (err)
 527                 lustre_free_sbi(sb);
 528
 529         if (lmv)
 530                 OBD_FREE(lmv, strlen(lmv) + 1);
 531         if (lov)
 532                 OBD_FREE(lov, strlen(lov) + 1);
 533         if (mds_sec)
 534                 OBD_FREE(mds_sec, strlen(mds_sec) + 1);
 535         if (oss_sec)
 536                 OBD_FREE(oss_sec, strlen(oss_sec) + 1);
 537
 538         return err;
 539 } /* ll_read_super */
 540
 541 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
 542                               struct config_llog_instance *cfg, int allow_recov)
 543 {
 544         struct lustre_cfg *lcfg = NULL;
 545         struct lustre_cfg_bufs bufs;
 546         struct portals_cfg pcfg;
 547         char *peer = "MDS_PEER_UUID";
 548         struct obd_device *obd;
 549         struct lustre_handle md_conn = {0, };
 550         struct obd_export *exp;
 551         char *name = "mdc_dev";
 552         class_uuid_t uuid;
 553         struct obd_uuid lmv_uuid;
 554         struct llog_ctxt *ctxt;
 555         int rc = 0, err = 0;
 556         ENTRY;
 557
 558         if (lmd_bad_magic(lmd))
 559                 RETURN(-EINVAL);
 560
 561         generate_random_uuid(uuid);
 562         class_uuid_unparse(uuid, &lmv_uuid);
 563
 564         if (lmd->lmd_local_nid) {
 565                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
 566                 pcfg.pcfg_nal = lmd->lmd_nal;
 567                 pcfg.pcfg_nid = lmd->lmd_local_nid;
 568                 rc = libcfs_nal_cmd(&pcfg);
 569                 if (rc < 0)
 570                         GOTO(out, rc);
 571         }
 572
 573         if (lmd->lmd_nal == SOCKNAL ||
 574             lmd->lmd_nal == OPENIBNAL ||
 575             lmd->lmd_nal == IIBNAL ||
 576             lmd->lmd_nal == VIBNAL ||
 577             lmd->lmd_nal == RANAL) {
 578                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
 579                 pcfg.pcfg_nal     = lmd->lmd_nal;
 580                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 581                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
 582                 pcfg.pcfg_misc    = lmd->lmd_port;
 583                 rc = libcfs_nal_cmd(&pcfg);
 584                 if (rc < 0)
 585                         GOTO(out, rc);
 586         }
 587         lustre_cfg_bufs_reset(&bufs, name);
 588         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 589
 590         lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
 591         lcfg->lcfg_nal = lmd->lmd_nal;
 592         lcfg->lcfg_nid = lmd->lmd_server_nid;
 593         LASSERT(lcfg->lcfg_nal);
 594         LASSERT(lcfg->lcfg_nid);
 595         err = class_process_config(lcfg);
 596         lustre_cfg_free(lcfg);
 597         if (err < 0)
 598                 GOTO(out_del_conn, err);
 599
 600         lustre_cfg_bufs_reset(&bufs, name);
 601         lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MDC_NAME);
 602         lustre_cfg_bufs_set_string(&bufs, 2, (char *)lmv_uuid.uuid);
 603
 604         lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
 605         err = class_process_config(lcfg);
 606         lustre_cfg_free(lcfg);
 607         if (err < 0)
 608                 GOTO(out_del_uuid, err);
 609
 610         lustre_cfg_bufs_reset(&bufs, name);
 611         lustre_cfg_bufs_set_string(&bufs, 1, lmd->lmd_mds);
 612         lustre_cfg_bufs_set_string(&bufs, 2, peer);
 613
 614         lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
 615         err = class_process_config(lcfg);
 616         lustre_cfg_free(lcfg);
 617         if (err < 0)
 618                 GOTO(out_detach, err);
 619
 620         obd = class_name2obd(name);
 621         if (obd == NULL)
 622                 GOTO(out_cleanup, rc = -EINVAL);
 623
 624         rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 625                           strlen(lmd->lmd_mds_security), lmd->lmd_mds_security);
 626         if (rc)
 627                 GOTO(out_cleanup, rc);
 628
 629         /* Disable initial recovery on this import */
 630         rc = obd_set_info(obd->obd_self_export,
 631                           strlen("initial_recov"), "initial_recov",
 632                           sizeof(allow_recov), &allow_recov);
 633         if (rc)
 634                 GOTO(out_cleanup, rc);
 635
 636         rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, 0);
 637         if (rc) {
 638                 CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
 639                 GOTO(out_cleanup, rc);
 640         }
 641
 642         exp = class_conn2export(&md_conn);
 643
 644         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
 645         rc = class_config_process_llog(ctxt, profile, cfg);
 646         if (rc)
 647                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 648
 649         err = obd_disconnect(exp, 0);
 650
 651         EXIT;
 652 out_cleanup:
 653         lustre_cfg_bufs_reset(&bufs, name);
 654         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 655         err = class_process_config(lcfg);
 656         lustre_cfg_free(lcfg);
 657         if (err < 0)
 658                 GOTO(out, err);
 659 out_detach:
 660         lustre_cfg_bufs_reset(&bufs, name);
 661         lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
 662         err = class_process_config(lcfg);
 663         lustre_cfg_free(lcfg);
 664         if (err < 0)
 665                 GOTO(out, err);
 666
 667 out_del_uuid:
 668         lustre_cfg_bufs_reset(&bufs, name);
 669         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 670         lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
 671         err = class_process_config(lcfg);
 672         lustre_cfg_free(lcfg);
 673
 674 out_del_conn:
 675         if (lmd->lmd_nal == SOCKNAL ||
 676             lmd->lmd_nal == OPENIBNAL ||
 677             lmd->lmd_nal == IIBNAL ||
 678             lmd->lmd_nal == VIBNAL ||
 679             lmd->lmd_nal == RANAL) {
 680                 int err2;
 681
 682                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
 683                 pcfg.pcfg_nal     = lmd->lmd_nal;
 684                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 685                 pcfg.pcfg_flags   = 1;          /* single_share */
 686                 err2 = libcfs_nal_cmd(&pcfg);
 687                 if (err2 && !err)
 688                         err = err2;
 689                 if (err < 0)
 690                         GOTO(out, err);
 691         }
 692 out:
 693         if (rc == 0)
 694                 rc = err;
 695
 696         return rc;
 697 }
 698
 699 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 700 {
 701         struct lustre_cfg *lcfg;
 702         struct lustre_cfg_bufs bufs;
 703         struct obd_device *obd;
 704         int next = 0;
 705
 706         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 707         {
 708                 int err;
 709
 710                 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
 711                 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 712                 err = class_process_config(lcfg);
 713                 if (err) {
 714                         CERROR("cleanup failed: %s\n", obd->obd_name);
 715                         //continue;
 716                 }
 717
 718                 lcfg->lcfg_command = LCFG_DETACH;
 719                 err = class_process_config(lcfg);
 720                 lustre_cfg_free(lcfg);
 721                 if (err) {
 722                         CERROR("detach failed: %s\n", obd->obd_name);
 723                         //continue;
 724                 }
 725         }
 726
 727         if (sbi->ll_lmd != NULL)
 728                 class_del_profile(sbi->ll_lmd->lmd_profile);
 729 }
 730
 731 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 732 {
 733         struct lustre_mount_data * lmd = data;
 734         char *lov = NULL, *lmv = NULL;
 735         struct ll_sb_info *sbi;
 736         int err;
 737         ENTRY;
 738
 739         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 740         if (lmd_bad_magic(lmd))
 741                 RETURN(-EINVAL);
 742
 743         sbi = lustre_init_sbi(sb);
 744         if (!sbi)
 745                 RETURN(-ENOMEM);
 746
 747         sbi->ll_flags |= LL_SBI_READAHEAD;
 748
 749         if (lmd->lmd_profile) {
 750                 struct lustre_profile *lprof;
 751                 struct config_llog_instance cfg;
 752                 int len;
 753
 754                 if (lmd->lmd_mds[0] == '\0') {
 755                         CERROR("no mds name\n");
 756                         GOTO(out_free, err = -EINVAL);
 757                 }
 758                 lmd->lmd_mds_security[sizeof(lmd->lmd_mds_security) - 1] = 0;
 759                 lmd->lmd_oss_security[sizeof(lmd->lmd_oss_security) - 1] = 0;
 760
 761                 OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 762                 if (sbi->ll_lmd == NULL)
 763                         GOTO(out_free, err = -ENOMEM);
 764                 memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
 765
 766                 /* generate a string unique to this super, let's try
 767                  the address of the super itself.*/
 768                 len = (sizeof(sb) * 2) + 1;
 769                 OBD_ALLOC(sbi->ll_instance, len);
 770                 if (sbi->ll_instance == NULL)
 771                         GOTO(out_free, err = -ENOMEM);
 772                 sprintf(sbi->ll_instance, "%p", sb);
 773
 774                 cfg.cfg_instance = sbi->ll_instance;
 775                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 776                 cfg.cfg_local_nid = lmd->lmd_local_nid;
 777                 err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
 778                 if (err < 0) {
 779                         CERROR("Unable to process log: %s\n", lmd->lmd_profile);
 780                         GOTO(out_free, err);
 781                 }
 782
 783                 lprof = class_get_profile(lmd->lmd_profile);
 784                 if (lprof == NULL) {
 785                         CERROR("No profile found: %s\n", lmd->lmd_profile);
 786                         GOTO(out_free, err = -EINVAL);
 787                 }
 788                 if (lov)
 789                         OBD_FREE(lov, strlen(lov) + 1);
 790                 OBD_ALLOC(lov, strlen(lprof->lp_lov) +
 791                           strlen(sbi->ll_instance) + 2);
 792                 sprintf(lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
 793
 794                 if (lmv)
 795                         OBD_FREE(lmv, strlen(lmv) + 1);
 796                 OBD_ALLOC(lmv, strlen(lprof->lp_lmv) +
 797                           strlen(sbi->ll_instance) + 2);
 798                 sprintf(lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
 799         }
 800
 801         if (!lov) {
 802                 CERROR("no osc\n");
 803                 GOTO(out_free, err = -EINVAL);
 804         }
 805
 806         if (!lmv) {
 807                 CERROR("no mdc\n");
 808                 GOTO(out_free, err = -EINVAL);
 809         }
 810
 811         err = lustre_common_fill_super(sb, lmv, lov, lmd->lmd_async,
 812                                        lmd->lmd_mds_security,
 813                                        lmd->lmd_oss_security,
 814                                        &lmd->lmd_nllu, &lmd->lmd_remote_flag);
 815
 816         if (err)
 817                 GOTO(out_free, err);
 818
 819 out_dev:
 820         if (lmv)
 821                 OBD_FREE(lmv, strlen(lmv) + 1);
 822         if (lov)
 823                 OBD_FREE(lov, strlen(lov) + 1);
 824
 825         RETURN(err);
 826
 827 out_free:
 828         if (sbi->ll_lmd) {
 829                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 830                 int err;
 831
 832                 if (sbi->ll_instance != NULL) {
 833                         struct lustre_mount_data *lmd = sbi->ll_lmd;
 834                         struct config_llog_instance cfg;
 835                         char *cl_prof;
 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", lmd->lmd_profile);
 842                         err = lustre_process_log(lmd, cl_prof, &cfg, 0);
 843                         if (err < 0) {
 844                                 CERROR("Unable to process log: %s\n", cl_prof);
 845                                 lustre_manual_cleanup(sbi);
 846                         }
 847                         OBD_FREE(cl_prof, len);
 848                         OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 849                 }
 850                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 851         }
 852         lustre_free_sbi(sb);
 853         goto out_dev;
 854 } /* lustre_fill_super */
 855
 856 void lustre_put_super(struct super_block *sb)
 857 {
 858         struct obd_device *obd;
 859         struct ll_sb_info *sbi = ll_s2sbi(sb);
 860         int force_umount = 0;
 861         ENTRY;
 862
 863         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 864         obd = class_exp2obd(sbi->ll_md_exp);
 865         if (obd)
 866                 force_umount = obd->obd_no_recov;
 867         obd = NULL;
 868
 869         lustre_common_put_super(sb);
 870         if (sbi->ll_lmd != NULL) {
 871                 char *cl_prof;
 872                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 873                 int err;
 874                 struct config_llog_instance cfg;
 875
 876                 if (force_umount) {
 877                         CERROR("force umount, doing manual cleanup\n");
 878                         lustre_manual_cleanup(sbi);
 879                         GOTO(free_lmd, 0);
 880                 }
 881
 882                 cfg.cfg_instance = sbi->ll_instance;
 883                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 884
 885                 OBD_ALLOC(cl_prof, len);
 886                 sprintf(cl_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
 887                 err = lustre_process_log(sbi->ll_lmd, cl_prof, &cfg, 0);
 888                 if (err < 0) {
 889                         CERROR("Unable to process log: %s, doing manual cleanup"
 890                                "\n", cl_prof);
 891                         lustre_manual_cleanup(sbi);
 892                 }
 893
 894                 OBD_FREE(cl_prof, len);
 895         free_lmd:
 896                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 897                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 898         }
 899
 900         lustre_free_sbi(sb);
 901
 902         EXIT;
 903 } /* lustre_put_super */
 904
 905 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 906 {
 907         struct lustre_mount_data *lmd = sbi->ll_lmd;
 908         char *profile = lmd->lmd_profile, *name = NULL;
 909         struct config_llog_instance cfg;
 910         int rc, namelen =  0, version;
 911         struct llog_ctxt *ctxt;
 912         ENTRY;
 913
 914         if (profile == NULL)
 915                 RETURN(0);
 916         if (lmd == NULL) {
 917                 CERROR("Client not mounted with zero-conf; cannot "
 918                        "process update log.\n");
 919                 RETURN(0);
 920         }
 921
 922         rc = obd_cancel_unused(sbi->ll_md_exp, NULL,
 923                                LDLM_FL_CONFIG_CHANGE, NULL);
 924         if (rc != 0)
 925                 CWARN("obd_cancel_unused(mdc): %d\n", rc);
 926
 927         rc = obd_cancel_unused(sbi->ll_dt_exp, NULL,
 928                                LDLM_FL_CONFIG_CHANGE, NULL);
 929         if (rc != 0)
 930                 CWARN("obd_cancel_unused(lov): %d\n", rc);
 931
 932         cfg.cfg_instance = sbi->ll_instance;
 933         cfg.cfg_uuid = sbi->ll_sb_uuid;
 934         cfg.cfg_local_nid = lmd->lmd_local_nid;
 935
 936         namelen = strlen(profile) + 20; /* -clean-######### */
 937         OBD_ALLOC(name, namelen);
 938         if (name == NULL)
 939                 RETURN(-ENOMEM);
 940
 941         if (clean) {
 942                 version = sbi->ll_config_version - 1;
 943                 sprintf(name, "%s-clean-%d", profile, version);
 944         } else {
 945                 version = sbi->ll_config_version + 1;
 946                 sprintf(name, "%s-%d", profile, version);
 947         }
 948
 949         CWARN("Applying configuration log %s\n", name);
 950
 951         ctxt = llog_get_context(&sbi->ll_md_exp->exp_obd->obd_llogs,
 952                                 LLOG_CONFIG_REPL_CTXT);
 953         rc = class_config_process_llog(ctxt, name, &cfg);
 954         if (rc == 0)
 955                 sbi->ll_config_version = version;
 956         CWARN("Finished applying configuration log %s: %d\n", name, rc);
 957
 958         if (rc == 0 && clean == 0) {
 959                 struct lov_desc desc;
 960                 __u32 valsize;
 961                 int rc = 0;
 962
 963                 valsize = sizeof(desc);
 964                 rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 965                                   "lovdesc", &valsize, &desc);
 966
 967                 rc = obd_init_ea_size(sbi->ll_md_exp,
 968                                       obd_size_diskmd(sbi->ll_dt_exp, NULL),
 969                                       (desc.ld_tgt_count *
 970                                        sizeof(struct llog_cookie)));
 971         }
 972         OBD_FREE(name, namelen);
 973         RETURN(rc);
 974 }
 975
 976 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 977 {
 978         struct inode *inode = NULL;
 979         l_lock(&lock->l_resource->lr_namespace->ns_lock);
 980         if (lock->l_ast_data) {
 981                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
 982                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
 983                         inode = igrab(lock->l_ast_data);
 984                 } else {
 985                         inode = lock->l_ast_data;
 986                         CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
 987                                "l_ast_data %p is bogus: magic %0x8\n",
 988                                lock->l_ast_data, lli->lli_inode_magic);
 989                         inode = NULL;
 990                 }
 991         }
 992         l_unlock(&lock->l_resource->lr_namespace->ns_lock);
 993         return inode;
 994 }
 995
 996 int null_if_equal(struct ldlm_lock *lock, void *data)
 997 {
 998         if (data == lock->l_ast_data) {
 999                 lock->l_ast_data = NULL;
1000
1001                 if (lock->l_req_mode != lock->l_granted_mode)
1002                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
1003         }
1004
1005         return LDLM_ITER_CONTINUE;
1006 }
1007
1008 void ll_clear_inode(struct inode *inode)
1009 {
1010         struct lustre_id id;
1011         struct ll_inode_info *lli = ll_i2info(inode);
1012         struct ll_sb_info *sbi = ll_i2sbi(inode);
1013         ENTRY;
1014
1015         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1016                inode->i_generation, inode);
1017
1018         lli->lli_inode_magic = LLI_INODE_DEAD;
1019         ll_inode2id(&id, inode);
1020
1021         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
1022         md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
1023
1024         LASSERT(!lli->lli_open_fd_write_count);
1025         LASSERT(!lli->lli_open_fd_read_count);
1026         LASSERT(!lli->lli_open_fd_exec_count);
1027         if (lli->lli_mds_write_och)
1028                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
1029         if (lli->lli_mds_exec_och)
1030                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
1031         if (lli->lli_mds_read_och)
1032                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
1033         if (lli->lli_smd)
1034                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1035                                   null_if_equal, inode);
1036
1037         if (lli->lli_smd) {
1038                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1039                 lli->lli_smd = NULL;
1040         }
1041
1042         if (lli->lli_mea) {
1043                 obd_free_memmd(sbi->ll_md_exp,
1044                                (struct lov_stripe_md **) &lli->lli_mea);
1045                 lli->lli_mea = NULL;
1046         }
1047
1048         if (lli->lli_symlink_name) {
1049                 OBD_FREE(lli->lli_symlink_name,
1050                          strlen(lli->lli_symlink_name) + 1);
1051                 lli->lli_symlink_name = NULL;
1052         }
1053         lli->lli_inode_magic = LLI_INODE_DEAD;
1054
1055         EXIT;
1056 }
1057
1058 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1059  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1060  * keep these values until such a time that objects are allocated for it.
1061  * We do the MDS operations first, as it is checking permissions for us.
1062  * We don't to the MDS RPC if there is nothing that we want to store there,
1063  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1064  * going to do an RPC anyways.
1065  *
1066  * If we are doing a truncate, we will send the mtime and ctime updates
1067  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1068  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1069  * at the same time.
1070  */
1071 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1072 {
1073         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1074         struct ll_sb_info *sbi = ll_i2sbi(inode);
1075         struct ptlrpc_request *request = NULL;
1076         struct mdc_op_data *op_data;
1077         int ia_valid = attr->ia_valid;
1078         int err, rc = 0;
1079         ENTRY;
1080
1081         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
1082         lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_SETATTR);
1083
1084         if (ia_valid & ATTR_SIZE) {
1085                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1086                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1087                                attr->ia_size, ll_file_maxbytes(inode));
1088                         RETURN(-EFBIG);
1089                 }
1090
1091                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1092         }
1093
1094         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1095         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1096                 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1097                         RETURN(-EPERM);
1098         }
1099
1100         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1101         if (attr->ia_valid & ATTR_CTIME) {
1102                 attr->ia_ctime = CURRENT_TIME;
1103                 attr->ia_valid |= ATTR_CTIME_SET;
1104         }
1105         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1106                 attr->ia_atime = CURRENT_TIME;
1107                 attr->ia_valid |= ATTR_ATIME_SET;
1108         }
1109         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1110                 attr->ia_mtime = CURRENT_TIME;
1111                 attr->ia_valid |= ATTR_MTIME_SET;
1112         }
1113
1114         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1115                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1116                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1117                        LTIME_S(CURRENT_TIME));
1118
1119         if (lsm)
1120                 attr->ia_valid &= ~ATTR_SIZE;
1121
1122         /* If only OST attributes being set on objects, don't do MDS RPC.
1123          * In that case, we need to check permissions and update the local
1124          * inode ourselves so we can call obdo_from_inode() always. */
1125         if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
1126                 struct lustre_md md;
1127
1128                 OBD_ALLOC(op_data, sizeof(*op_data));
1129                 if (op_data == NULL)
1130                         RETURN(-ENOMEM);
1131                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1132
1133                 rc = md_setattr(sbi->ll_md_exp, op_data,
1134                                 attr, NULL, 0, NULL, 0, &request);
1135                 OBD_FREE(op_data, sizeof(*op_data));
1136                 if (rc) {
1137                         ptlrpc_req_finished(request);
1138                         if (rc != -EPERM && rc != -EACCES)
1139                                 CERROR("md_setattr fails: rc = %d\n", rc);
1140                         RETURN(rc);
1141                 }
1142
1143                 rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
1144                                        sbi->ll_dt_exp, &md);
1145                 if (rc) {
1146                         ptlrpc_req_finished(request);
1147                         RETURN(rc);
1148                 }
1149
1150                 /* We call inode_setattr to adjust timestamps, but we first
1151                  * clear ATTR_SIZE to avoid invoking vmtruncate.
1152                  *
1153                  * NB: ATTR_SIZE will only be set at this point if the size
1154                  * resides on the MDS, ie, this file has no objects. */
1155                 attr->ia_valid &= ~ATTR_SIZE;
1156
1157                 /*
1158                  * assigning inode_setattr() to @err to disable warning that
1159                  * function's result should be checked by by caller. error is
1160                  * impossible here, as vmtruncate() control path is disabled.
1161                  */
1162                 err = inode_setattr(inode, attr);
1163                 ll_update_inode(inode, &md);
1164                 ptlrpc_req_finished(request);
1165
1166                 if (!lsm || !S_ISREG(inode->i_mode)) {
1167                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1168                         RETURN(0);
1169                 }
1170         } else {
1171                 /* The OST doesn't check permissions, but the alternative is
1172                  * a gratuitous RPC to the MDS.  We already rely on the client
1173                  * to do read/write/truncate permission checks, so is mtime OK?
1174                  */
1175                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
1176                         /* from sys_utime() */
1177                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
1178                                 if (current->fsuid != inode->i_uid &&
1179                                     (rc = ll_permission(inode, MAY_WRITE, NULL)) != 0)
1180                                         RETURN(rc);
1181                         } else {
1182                                 /* from inode_change_ok() */
1183                                 if (current->fsuid != inode->i_uid &&
1184                                     !capable(CAP_FOWNER))
1185                                         RETURN(-EPERM);
1186                         }
1187                 }
1188
1189                 /* won't invoke vmtruncate, as we already cleared ATTR_SIZE */
1190                 err = inode_setattr(inode, attr);
1191                 /*
1192                  * assigning inode_setattr() to @err to disable warning that
1193                  * function's result should be checked by by caller. error is
1194                  * impossible here, as vmtruncate() control path is disabled.
1195                  */
1196         }
1197
1198         /* We really need to get our PW lock before we change inode->i_size.
1199          * If we don't we can race with other i_size updaters on our node, like
1200          * ll_file_read.  We can also race with i_size propogation to other
1201          * nodes through dirtying and writeback of final cached pages.  This
1202          * last one is especially bad for racing o_append users on other
1203          * nodes. */
1204         if (ia_valid & ATTR_SIZE) {
1205                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1206                                                            OBD_OBJECT_EOF } };
1207                 struct lustre_handle lockh = { 0 };
1208                 struct ll_inode_info *lli = ll_i2info(inode);
1209                 int err, ast_flags = 0;
1210                 /* XXX when we fix the AST intents to pass the discard-range
1211                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1212                  * XXX here. */
1213                 if (attr->ia_size == 0)
1214                         ast_flags = LDLM_AST_DISCARD_DATA;
1215
1216                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1217                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
1218
1219                 if (rc != 0)
1220                         RETURN(rc);
1221
1222                 down(&lli->lli_size_sem);
1223                 lli->lli_size_pid = current->pid;
1224                 rc = vmtruncate(inode, attr->ia_size);
1225                 if (rc != 0) {
1226                         LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1227                         lli->lli_size_pid = 0;
1228                         up(&lli->lli_size_sem);
1229                 }
1230
1231                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1232                 if (err) {
1233                         CERROR("ll_extent_unlock failed: %d\n", err);
1234                         if (!rc)
1235                                 rc = err;
1236                 }
1237         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET | ATTR_UID | ATTR_GID)) {
1238                 struct obdo *oa = NULL;
1239
1240                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1241                        inode->i_ino, LTIME_S(attr->ia_mtime));
1242
1243                 oa = obdo_alloc();
1244                 if (oa == NULL)
1245                         RETURN(-ENOMEM);
1246
1247                 oa->o_id = lsm->lsm_object_id;
1248                 oa->o_gr = lsm->lsm_object_gr;
1249                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1250
1251                 if (ia_valid & ATTR_UID) {
1252                         oa->o_uid = inode->i_uid;
1253                         oa->o_valid |= OBD_MD_FLUID;
1254                 }
1255
1256                 if (ia_valid & ATTR_GID) {
1257                         oa->o_gid = inode->i_gid;
1258                         oa->o_valid |= OBD_MD_FLGID;
1259                 }
1260
1261                 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1262                                 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1263                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1264                 obdo_free(oa);
1265                 if (rc)
1266                         CERROR("obd_setattr fails: rc = %d\n", rc);
1267         }
1268
1269         RETURN(rc);
1270 }
1271
1272 int ll_setattr(struct dentry *de, struct iattr *attr)
1273 {
1274         LASSERT(de->d_inode);
1275         return ll_setattr_raw(de->d_inode, attr);
1276 }
1277
1278 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1279                        unsigned long max_age)
1280 {
1281         struct ll_sb_info *sbi = ll_s2sbi(sb);
1282         struct obd_statfs obd_osfs;
1283         int rc;
1284         ENTRY;
1285
1286         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1287         if (rc) {
1288                 CERROR("obd_statfs fails: rc = %d\n", rc);
1289                 RETURN(rc);
1290         }
1291
1292         osfs->os_type = sb->s_magic;
1293
1294         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1295                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1296
1297         rc = obd_statfs(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
1298         if (rc) {
1299                 CERROR("obd_statfs fails: rc = %d\n", rc);
1300                 RETURN(rc);
1301         }
1302
1303         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1304                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1305                obd_osfs.os_files);
1306
1307         osfs->os_blocks = obd_osfs.os_blocks;
1308         osfs->os_bfree = obd_osfs.os_bfree;
1309         osfs->os_bavail = obd_osfs.os_bavail;
1310
1311         /* If we don't have as many objects free on the OST as inodes
1312          * on the MDS, we reduce the total number of inodes to
1313          * compensate, so that the "inodes in use" number is correct.
1314          */
1315         if (obd_osfs.os_ffree < osfs->os_ffree) {
1316                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1317                         obd_osfs.os_ffree;
1318                 osfs->os_ffree = obd_osfs.os_ffree;
1319         }
1320
1321         RETURN(rc);
1322 }
1323
1324 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1325 {
1326         struct obd_statfs osfs;
1327         int rc;
1328
1329         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p\n", sb);
1330         lprocfs_counter_incr(ll_s2sbi(sb)->ll_stats, LPROC_LL_STAFS);
1331
1332         /* For now we will always get up-to-date statfs values, but in the
1333          * future we may allow some amount of caching on the client (e.g.
1334          * from QOS or lprocfs updates). */
1335         rc = ll_statfs_internal(sb, &osfs, jiffies - 1);
1336         if (rc)
1337                 return rc;
1338
1339         statfs_unpack(sfs, &osfs);
1340
1341         if (sizeof(sfs->f_blocks) == 4) {
1342                 while (osfs.os_blocks > ~0UL) {
1343                         sfs->f_bsize <<= 1;
1344
1345                         osfs.os_blocks >>= 1;
1346                         osfs.os_bfree >>= 1;
1347                         osfs.os_bavail >>= 1;
1348                 }
1349         }
1350
1351         sfs->f_blocks = osfs.os_blocks;
1352         sfs->f_bfree = osfs.os_bfree;
1353         sfs->f_bavail = osfs.os_bavail;
1354
1355         return 0;
1356 }
1357
1358 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1359 {
1360         struct ll_inode_info *lli = ll_i2info(inode);
1361         struct lov_stripe_md *lsm = md->lsm;
1362         struct mds_body *body = md->body;
1363         struct mea *mea = md->mea;
1364         struct posix_acl *ll_acl_access = md->acl_access;
1365         ENTRY;
1366
1367         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1368
1369         if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
1370                 /* check for default striping info for dir. */
1371                 LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
1372         }
1373
1374         if (lsm != NULL) {
1375                 LASSERT(lsm->lsm_object_gr > 0);
1376                 if (lli->lli_smd == NULL) {
1377                         lli->lli_smd = lsm;
1378                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1379                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1380                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1381                 } else {
1382                         int i;
1383                         if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
1384                                 CERROR("lsm mismatch for inode %ld\n",
1385                                        inode->i_ino);
1386                                 CERROR("lli_smd:\n");
1387                                 dump_lsm(D_ERROR, lli->lli_smd);
1388                                 CERROR("lsm:\n");
1389                                 dump_lsm(D_ERROR, lsm);
1390                                 LBUG();
1391                         }
1392                         /* XXX FIXME -- We should decide on a safer (atomic) and
1393                          * more elegant way to update the lsm */
1394                         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1395                                 lli->lli_smd->lsm_oinfo[i].loi_id =
1396                                         lsm->lsm_oinfo[i].loi_id;
1397                                 lli->lli_smd->lsm_oinfo[i].loi_gr =
1398                                         lsm->lsm_oinfo[i].loi_gr;
1399                                 lli->lli_smd->lsm_oinfo[i].loi_ost_idx =
1400                                         lsm->lsm_oinfo[i].loi_ost_idx;
1401                                 lli->lli_smd->lsm_oinfo[i].loi_ost_gen =
1402                                         lsm->lsm_oinfo[i].loi_ost_gen;
1403                         }
1404                 }
1405                 /* bug 2844 - limit i_blksize for broken user-space apps */
1406                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
1407                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
1408                 if (lli->lli_smd != lsm)
1409                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1410         }
1411
1412         if (mea != NULL) {
1413                 if (lli->lli_mea == NULL) {
1414                         lli->lli_mea = mea;
1415                 } else {
1416                         if (memcmp(lli->lli_mea, mea, body->eadatasize)) {
1417                                 CERROR("mea mismatch for inode %lu\n",
1418                                         inode->i_ino);
1419                                 LBUG();
1420                         }
1421                 }
1422                 if (lli->lli_mea != mea)
1423                         obd_free_memmd(ll_i2mdexp(inode),
1424                                        (struct lov_stripe_md **) &mea);
1425         }
1426
1427         if (body->valid & OBD_MD_FID)
1428                 id_assign_fid(&lli->lli_id, &body->id1);
1429
1430         if (body->valid & OBD_MD_FLID)
1431                 id_ino(&lli->lli_id) = id_ino(&body->id1);
1432
1433         if (body->valid & OBD_MD_FLGENER)
1434                 id_gen(&lli->lli_id) = id_gen(&body->id1);
1435
1436         spin_lock(&lli->lli_lock);
1437         if (ll_acl_access != NULL) {
1438                 if (lli->lli_acl_access != NULL)
1439                         posix_acl_release(lli->lli_acl_access);
1440                 lli->lli_acl_access = ll_acl_access;
1441         }
1442         spin_unlock(&lli->lli_lock);
1443
1444         if (body->valid & OBD_MD_FLID)
1445                 inode->i_ino = id_ino(&body->id1);
1446         if (body->valid & OBD_MD_FLGENER)
1447                 inode->i_generation = id_gen(&body->id1);
1448         if (body->valid & OBD_MD_FLATIME)
1449                 LTIME_S(inode->i_atime) = body->atime;
1450         if (body->valid & OBD_MD_FLMTIME &&
1451             body->mtime > LTIME_S(inode->i_mtime)) {
1452                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %u\n",
1453                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
1454                 LTIME_S(inode->i_mtime) = body->mtime;
1455         }
1456         if (body->valid & OBD_MD_FLCTIME &&
1457             body->ctime > LTIME_S(inode->i_ctime))
1458                 LTIME_S(inode->i_ctime) = body->ctime;
1459         if (body->valid & OBD_MD_FLMODE) {
1460                 inode->i_mode = (inode->i_mode & S_IFMT) |
1461                         (body->mode & ~S_IFMT);
1462         }
1463         if (body->valid & OBD_MD_FLTYPE) {
1464                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1465                         (body->mode & S_IFMT);
1466         }
1467         if (body->valid & OBD_MD_FLUID)
1468                 inode->i_uid = body->uid;
1469         if (body->valid & OBD_MD_FLGID)
1470                 inode->i_gid = body->gid;
1471         if (body->valid & OBD_MD_FLFLAGS)
1472                 inode->i_flags = body->flags;
1473         if (body->valid & OBD_MD_FLNLINK)
1474                 inode->i_nlink = body->nlink;
1475         if (body->valid & OBD_MD_FLRDEV)
1476 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1477                 inode->i_rdev = body->rdev;
1478 #else
1479                 inode->i_rdev = old_decode_dev(body->rdev);
1480 #endif
1481         if (body->valid & OBD_MD_FLSIZE)
1482                 inode->i_size = body->size;
1483         if (body->valid & OBD_MD_FLBLOCKS)
1484                 inode->i_blocks = body->blocks;
1485
1486         if (body->valid & OBD_MD_FLSIZE)
1487                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
1488
1489 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1490         inode->i_dev = (kdev_t)id_group(&lli->lli_id);
1491 #endif
1492         LASSERT(id_fid(&lli->lli_id) != 0);
1493 }
1494
1495 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
1496 static struct backing_dev_info ll_backing_dev_info = {
1497         .ra_pages       = 0,    /* No readahead */
1498         .memory_backed  = 0,    /* Does contribute to dirty memory */
1499 };
1500 #endif
1501
1502 void ll_read_inode2(struct inode *inode, void *opaque)
1503 {
1504         struct lustre_md *md = opaque;
1505         struct ll_inode_info *lli = ll_i2info(inode);
1506         ENTRY;
1507
1508         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1509                inode->i_generation, inode);
1510
1511         ll_lli_init(lli);
1512
1513         LASSERT(!lli->lli_smd);
1514
1515         /* Core attributes from the MDS first.  This is a new inode, and
1516          * the VFS doesn't zero times in the core inode so we have to do
1517          * it ourselves.  They will be overwritten by either MDS or OST
1518          * attributes - we just need to make sure they aren't newer. */
1519         LTIME_S(inode->i_mtime) = 0;
1520         LTIME_S(inode->i_atime) = 0;
1521         LTIME_S(inode->i_ctime) = 0;
1522
1523         inode->i_rdev = 0;
1524         ll_update_inode(inode, md);
1525
1526         /* OIDEBUG(inode); */
1527
1528         if (S_ISREG(inode->i_mode)) {
1529                 inode->i_op = &ll_file_inode_operations;
1530                 inode->i_fop = &ll_file_operations;
1531                 inode->i_mapping->a_ops = &ll_aops;
1532                 EXIT;
1533         } else if (S_ISDIR(inode->i_mode)) {
1534                 inode->i_op = &ll_dir_inode_operations;
1535                 inode->i_fop = &ll_dir_operations;
1536                 inode->i_mapping->a_ops = &ll_dir_aops;
1537                 EXIT;
1538         } else if (S_ISLNK(inode->i_mode)) {
1539                 inode->i_op = &ll_fast_symlink_inode_operations;
1540                 EXIT;
1541         } else {
1542                 inode->i_op = &ll_special_inode_operations;
1543
1544 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1545                 init_special_inode(inode, inode->i_mode,
1546                                    kdev_t_to_nr(inode->i_rdev));
1547
1548                 /* initializing backing dev info. */
1549                 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1550 #else
1551                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1552 #endif
1553                 lli->ll_save_ifop = inode->i_fop;
1554
1555                 if (S_ISCHR(inode->i_mode))
1556                         inode->i_fop = &ll_special_chr_inode_fops;
1557                 else if (S_ISBLK(inode->i_mode))
1558                         inode->i_fop = &ll_special_blk_inode_fops;
1559                 else if (S_ISFIFO(inode->i_mode))
1560                         inode->i_fop = &ll_special_fifo_inode_fops;
1561                 else if (S_ISSOCK(inode->i_mode))
1562                         inode->i_fop = &ll_special_sock_inode_fops;
1563
1564                 CWARN("saved %p, replaced with %p\n", lli->ll_save_ifop,
1565                       inode->i_fop);
1566
1567                 if (lli->ll_save_ifop->owner) {
1568                         CWARN("%p has owner %p\n", lli->ll_save_ifop,
1569                               lli->ll_save_ifop->owner);
1570                 }
1571                 EXIT;
1572         }
1573 }
1574
1575 void ll_delete_inode(struct inode *inode)
1576 {
1577         struct ll_sb_info *sbi = ll_i2sbi(inode);
1578         struct lustre_id id;
1579         int rc;
1580         ENTRY;
1581
1582         ll_inode2id(&id, inode);
1583
1584         rc = md_delete_inode(sbi->ll_md_exp, &id);
1585         if (rc) {
1586                 CERROR("md_delete_inode() failed, error %d\n",
1587                        rc);
1588         }
1589
1590         clear_inode(inode);
1591         EXIT;
1592 }
1593
1594 int ll_iocontrol(struct inode *inode, struct file *file,
1595                  unsigned int cmd, unsigned long arg)
1596 {
1597         struct ll_sb_info *sbi = ll_i2sbi(inode);
1598         struct ptlrpc_request *req = NULL;
1599         int rc, flags = 0;
1600         ENTRY;
1601
1602         switch(cmd) {
1603         case EXT3_IOC_GETFLAGS: {
1604                 struct lustre_id id;
1605                 __u64 valid = OBD_MD_FLFLAGS;
1606                 struct mds_body *body;
1607
1608                 ll_inode2id(&id, inode);
1609                 rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, 0, 0, &req);
1610                 if (rc) {
1611                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1612                         RETURN(-abs(rc));
1613                 }
1614
1615                 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
1616
1617                 if (body->flags & S_APPEND)
1618                         flags |= EXT3_APPEND_FL;
1619                 if (body->flags & S_IMMUTABLE)
1620                         flags |= EXT3_IMMUTABLE_FL;
1621                 if (body->flags & S_NOATIME)
1622                         flags |= EXT3_NOATIME_FL;
1623
1624                 ptlrpc_req_finished (req);
1625
1626                 RETURN(put_user(flags, (int *)arg));
1627         }
1628         case EXT3_IOC_SETFLAGS: {
1629                 struct mdc_op_data *op_data;
1630                 struct iattr attr;
1631                 struct obdo *oa;
1632                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1633
1634                 if (get_user(flags, (int *)arg))
1635                         RETURN(-EFAULT);
1636
1637                 oa = obdo_alloc();
1638                 if (!oa)
1639                         RETURN(-ENOMEM);
1640
1641                 OBD_ALLOC(op_data, sizeof(*op_data));
1642                 if (op_data == NULL) {
1643                         obdo_free(oa);
1644                         RETURN(-ENOMEM);
1645                 }
1646                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1647
1648                 memset(&attr, 0x0, sizeof(attr));
1649                 attr.ia_attr_flags = flags;
1650                 attr.ia_valid |= ATTR_ATTR_FLAG;
1651
1652                 rc = md_setattr(sbi->ll_md_exp, op_data,
1653                                 &attr, NULL, 0, NULL, 0, &req);
1654                 OBD_FREE(op_data, sizeof(*op_data));
1655                 if (rc) {
1656                         ptlrpc_req_finished(req);
1657                         if (rc != -EPERM && rc != -EACCES)
1658                                 CERROR("md_setattr fails: rc = %d\n", rc);
1659                         obdo_free(oa);
1660                         RETURN(rc);
1661                 }
1662                 ptlrpc_req_finished(req);
1663
1664                 oa->o_id = lsm->lsm_object_id;
1665                 oa->o_gr = lsm->lsm_object_gr;
1666                 oa->o_flags = flags;
1667                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1668
1669                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1670                 obdo_free(oa);
1671                 if (rc) {
1672                         if (rc != -EPERM && rc != -EACCES)
1673                                 CERROR("md_setattr fails: rc = %d\n", rc);
1674                         RETURN(rc);
1675                 }
1676
1677                 if (flags & EXT3_APPEND_FL)
1678                         inode->i_flags |= S_APPEND;
1679                 else
1680                         inode->i_flags &= ~S_APPEND;
1681                 if (flags & EXT3_IMMUTABLE_FL)
1682                         inode->i_flags |= S_IMMUTABLE;
1683                 else
1684                         inode->i_flags &= ~S_IMMUTABLE;
1685                 if (flags & EXT3_NOATIME_FL)
1686                         inode->i_flags |= S_NOATIME;
1687                 else
1688                         inode->i_flags &= ~S_NOATIME;
1689
1690                 RETURN(0);
1691         }
1692         default:
1693                 RETURN(-ENOSYS);
1694         }
1695
1696         RETURN(0);
1697 }
1698
1699 /* this is only called in the case of forced umount. */
1700 void ll_umount_begin(struct super_block *sb)
1701 {
1702         struct ll_sb_info *sbi = ll_s2sbi(sb);
1703         struct obd_ioctl_data ioc_data = { 0 };
1704         struct obd_device *obd;
1705         ENTRY;
1706
1707         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1708                sb->s_count, atomic_read(&sb->s_active));
1709
1710         obd = class_exp2obd(sbi->ll_md_exp);
1711         if (obd == NULL) {
1712                 CERROR("Invalid MDC connection handle "LPX64"\n",
1713                        sbi->ll_md_exp->exp_handle.h_cookie);
1714                 EXIT;
1715                 return;
1716         }
1717         obd->obd_no_recov = 1;
1718         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1719                       sizeof(ioc_data), &ioc_data, NULL);
1720
1721         obd = class_exp2obd(sbi->ll_dt_exp);
1722         if (obd == NULL) {
1723                 CERROR("Invalid LOV connection handle "LPX64"\n",
1724                        sbi->ll_dt_exp->exp_handle.h_cookie);
1725                 EXIT;
1726                 return;
1727         }
1728
1729         obd->obd_no_recov = 1;
1730         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1731                       sizeof(ioc_data), &ioc_data, NULL);
1732
1733         /*
1734          * really, we'd like to wait until there are no requests outstanding,
1735          * and then continue.  For now, we just invalidate the requests,
1736          * schedule, and hope.
1737          */
1738         schedule();
1739
1740         EXIT;
1741 }
1742
1743 int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
1744                   struct inode **inode, struct ptlrpc_request *req,
1745                   int offset, struct super_block *sb)
1746 {
1747         struct lustre_md md;
1748         int rc = 0;
1749
1750         rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
1751         if (rc)
1752                 RETURN(rc);
1753
1754         if (*inode) {
1755                 ll_update_inode(*inode, &md);
1756         } else {
1757                 LASSERT(sb);
1758                 *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
1759                 if (*inode == NULL || is_bad_inode(*inode)) {
1760                         /* free the lsm if we allocated one above */
1761                         if (md.lsm != NULL)
1762                                 obd_free_memmd(dt_exp, &md.lsm);
1763                         if (md.mea != NULL)
1764                                 obd_free_memmd(md_exp,
1765                                                (struct lov_stripe_md**)&md.mea);
1766                         rc = -ENOMEM;
1767                         CERROR("new_inode -fatal: rc %d\n", rc);
1768                 }
1769         }
1770
1771         RETURN(rc);
1772 }
1773
1774 int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
1775                char *filename, struct lustre_id *ret)
1776 {
1777         struct ptlrpc_request *request = NULL;
1778         struct mds_body *body;
1779         int rc;
1780
1781         rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
1782                              OBD_MD_FID, 0, &request);
1783         if (rc < 0) {
1784                 CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
1785                        filename, rc);
1786                 return rc;
1787         }
1788
1789         body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
1790         LASSERT(body != NULL);
1791         LASSERT_REPSWABBED(request, 0);
1792
1793         *ret = body->id1;
1794         ptlrpc_req_finished(request);
1795
1796         return rc;
1797 }