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 *security, __u32 *nllu,
 133                              __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         kdev_t devno;
 145         int err;
 146         __u32 valsize;
 147         ENTRY;
 148
 149         obd = class_name2obd(lmv);
 150         if (!obd) {
 151                 CERROR("MDC %s: not setup or attached\n", lmv);
 152                 RETURN(-EINVAL);
 153         }
 154         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 155                      sizeof(async), &async);
 156
 157         if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
 158             (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
 159                 CERROR("wrong remote flag "LPX64"\n", *remote);
 160                 RETURN(-EINVAL);
 161         }
 162
 163         OBD_ALLOC(data, sizeof(*data));
 164         if (!data)
 165                 RETURN(-ENOMEM);
 166
 167         data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
 168                                               OBD_CONNECT_REMOTE);
 169         memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
 170
 171         if (security == NULL)
 172                 security = "null";
 173
 174         err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 175                            strlen(security), security);
 176         if (err) {
 177                 CERROR("LMV %s: failed to set security %s, err %d\n",
 178                         lmv, security, err);
 179                 OBD_FREE(data, sizeof(*data));
 180                 RETURN(err);
 181         }
 182
 183         if (proc_lustre_fs_root) {
 184                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 185                                                   lov, lmv);
 186                 if (err < 0)
 187                         CERROR("could not register mount in /proc/lustre");
 188         }
 189
 190         err = obd_connect(&md_conn, obd, &sbi->ll_sb_uuid, data,
 191                           OBD_OPT_REAL_CLIENT);
 192         if (err == -EBUSY) {
 193                 CERROR("An MDS (lmv %s) is performing recovery, of which this"
 194                        " client is not a part.  Please wait for recovery to "
 195                        "complete, abort, or time out.\n", lmv);
 196                 GOTO(out, err);
 197         } else if (err) {
 198                 CERROR("cannot connect to %s: rc = %d\n", lmv, err);
 199                 GOTO(out, err);
 200         }
 201         sbi->ll_md_exp = class_conn2export(&md_conn);
 202         err = obd_statfs(obd, &osfs, jiffies - HZ);
 203         if (err)
 204                 GOTO(out_lmv, err);
 205
 206         if (!osfs.os_bsize) {
 207                 CERROR("Invalid block size is detected.");
 208                 GOTO(out_lmv, err);
 209         }
 210
 211         sb->s_magic = LL_SUPER_MAGIC;
 212         sb->s_blocksize = osfs.os_bsize;
 213         sb->s_blocksize_bits = log2(osfs.os_bsize);
 214         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
 215
 216         devno = get_uuid2int((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid,
 217                              strlen((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
 218
 219         sb->s_dev = devno;
 220
 221         /* after statfs, we are supposed to have connected to MDSs,
 222          * so it's ok to check remote flag returned.
 223          */
 224         valsize = sizeof(&sbi->ll_remote);
 225         err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
 226                            &valsize, &sbi->ll_remote);
 227         if (err) {
 228                 CERROR("fail to obtain remote flag\n");
 229                 GOTO(out, err);
 230         }
 231
 232         obd = class_name2obd(lov);
 233         if (!obd) {
 234                 CERROR("OSC %s: not setup or attached\n", lov);
 235                 GOTO(out_lmv, err);
 236         }
 237         obd_set_info(obd->obd_self_export, strlen("async"), "async",
 238                      sizeof(async), &async);
 239
 240         err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data,
 241                           OBD_OPT_REAL_CLIENT);
 242         if (err == -EBUSY) {
 243                 CERROR("An OST (lov %s) is performing recovery, of which this"
 244                        " client is not a part.  Please wait for recovery to "
 245                        "complete, abort, or time out.\n", lov);
 246                 GOTO(out, err);
 247         } else if (err) {
 248                 CERROR("cannot connect to %s: rc = %d\n", lov, err);
 249                 GOTO(out_lmv, err);
 250         }
 251         sbi->ll_dt_exp = class_conn2export(&dt_conn);
 252
 253         err = lustre_init_dt_desc(sbi);
 254         if (err == 0) {
 255                 int mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
 256                 obd_init_ea_size(sbi->ll_md_exp, mdsize,
 257                                  sbi->ll_dt_desc.ld_tgt_count *
 258                                  sizeof(struct llog_cookie));
 259         }
 260
 261         err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
 262         if (err) {
 263                 CERROR("cannot mds_connect: rc = %d\n", err);
 264                 GOTO(out_lov, err);
 265         }
 266         CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 267
 268         sb->s_op = &lustre_super_operations;
 269
 270         /* make root inode
 271          * XXX: move this to after cbd setup? */
 272         err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
 273                          (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID), NULL, 0,
 274                          0, &request);
 275         if (err) {
 276                 CERROR("md_getattr failed for root: rc = %d\n", err);
 277                 GOTO(out_lov, err);
 278         }
 279
 280         err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
 281                                 sbi->ll_dt_exp, &md);
 282         if (err) {
 283                 CERROR("failed to understand root inode md: rc = %d\n", err);
 284                 ptlrpc_req_finished(request);
 285                 GOTO(out_lov, err);
 286         }
 287
 288         LASSERT(id_ino(&sbi->ll_rootid) != 0);
 289         root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 290
 291         ptlrpc_req_finished(request);
 292
 293         if (root == NULL || is_bad_inode(root)) {
 294                 if (md.lsm != NULL)
 295                     obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
 296                 if (md.mea != NULL)
 297                     obd_free_memmd(sbi->ll_md_exp,
 298                                    (struct lov_stripe_md**)&md.mea);
 299                 CERROR("lustre_lite: bad iget4 for root\n");
 300                 GOTO(out_root, err = -EBADF);
 301         }
 302
 303         err = ll_close_thread_start(&sbi->ll_lcq);
 304         if (err) {
 305                 CERROR("cannot start close thread: rc %d\n", err);
 306                 GOTO(out_root, err);
 307         }
 308
 309         ll_gns_add_timer(sbi);
 310
 311         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
 312            backing dev info assigned to inode mapping is used for
 313            determining maximal readahead. */
 314 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
 315     !defined(KERNEL_HAS_AS_MAX_READAHEAD)
 316         /* bug 2805 - set VM readahead to zero */
 317         vm_max_readahead = vm_min_readahead = 0;
 318 #endif
 319
 320         sb->s_root = d_alloc_root(root);
 321         sb->s_root->d_op = &ll_d_ops;
 322
 323         sb->s_flags |= MS_POSIXACL;
 324 #ifdef S_PDIROPS
 325         CWARN("Enabling PDIROPS\n");
 326         sb->s_flags |= S_PDIROPS;
 327 #endif
 328
 329         if (data != NULL)
 330                 OBD_FREE(data, sizeof(*data));
 331         RETURN(err);
 332 out_root:
 333         if (root)
 334                 iput(root);
 335 out_lov:
 336         obd_disconnect(sbi->ll_dt_exp, 0);
 337 out_lmv:
 338         obd_disconnect(sbi->ll_md_exp, 0);
 339 out:
 340         if (data != NULL)
 341                 OBD_FREE(data, sizeof(*data));
 342         lprocfs_unregister_mountpoint(sbi);
 343         return err;
 344 }
 345
 346 void lustre_common_put_super(struct super_block *sb)
 347 {
 348         struct ll_sb_info *sbi = ll_s2sbi(sb);
 349         struct hlist_node *tmp, *next;
 350         ENTRY;
 351
 352         ll_gns_del_timer(sbi);
 353         ll_close_thread_shutdown(sbi->ll_lcq);
 354
 355         list_del(&sbi->ll_conn_chain);
 356         obd_disconnect(sbi->ll_dt_exp, 0);
 357
 358         lprocfs_unregister_mountpoint(sbi);
 359         if (sbi->ll_proc_root) {
 360                 lprocfs_remove(sbi->ll_proc_root);
 361                 sbi->ll_proc_root = NULL;
 362         }
 363
 364         obd_disconnect(sbi->ll_md_exp, 0);
 365
 366         // We do this to get rid of orphaned dentries. That is not really trw.
 367         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
 368                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
 369                 CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
 370                       dentry->d_name.len, dentry->d_name.name, dentry, next);
 371                 shrink_dcache_parent(dentry);
 372         }
 373         EXIT;
 374 }
 375
 376 char *ll_read_opt(const char *opt, char *data)
 377 {
 378         char *value;
 379         char *retval;
 380         ENTRY;
 381
 382         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 383         if (strncmp(opt, data, strlen(opt)))
 384                 RETURN(NULL);
 385         if ((value = strchr(data, '=')) == NULL)
 386                 RETURN(NULL);
 387
 388         value++;
 389         OBD_ALLOC(retval, strlen(value) + 1);
 390         if (!retval) {
 391                 CERROR("out of memory!\n");
 392                 RETURN(NULL);
 393         }
 394
 395         memcpy(retval, value, strlen(value)+1);
 396         CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
 397         RETURN(retval);
 398 }
 399
 400 int ll_set_opt(const char *opt, char *data, int fl)
 401 {
 402         ENTRY;
 403
 404         CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
 405         if (strncmp(opt, data, strlen(opt)))
 406                 RETURN(0);
 407         else
 408                 RETURN(fl);
 409 }
 410
 411 void ll_options(char *options, char **lov, char **lmv, char **sec,
 412                 int *async, int *flags)
 413 {
 414         char *this_char;
 415 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 416         char *opt_ptr = options;
 417 #endif
 418         ENTRY;
 419
 420         if (!options) {
 421                 EXIT;
 422                 return;
 423         }
 424
 425         *async = 0;
 426 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 427         for (this_char = strtok (options, ",");
 428              this_char != NULL;
 429              this_char = strtok (NULL, ",")) {
 430 #else
 431         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 432 #endif
 433                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
 434                 if (!*lov && (*lov = ll_read_opt("osc", this_char)))
 435                         continue;
 436                 if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
 437                         continue;
 438                 if (!strncmp(this_char, "lasync", strlen("lasync"))) {
 439                         *async = 1;
 440                         continue;
 441                 }
 442                 if (!*sec && (*sec = ll_read_opt("sec", this_char)))
 443                         continue;
 444                 if (!(*flags & LL_SBI_NOLCK) &&
 445                     ((*flags) = (*flags) |
 446                                 ll_set_opt("nolock", this_char,
 447                                            LL_SBI_NOLCK)))
 448                         continue;
 449         }
 450
 451         EXIT;
 452 }
 453
 454 void ll_lli_init(struct ll_inode_info *lli)
 455 {
 456         sema_init(&lli->lli_open_sem, 1);
 457         sema_init(&lli->lli_size_sem, 1);
 458         lli->lli_flags = 0;
 459         lli->lli_size_pid = 0;
 460         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
 461         spin_lock_init(&lli->lli_lock);
 462         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
 463         lli->lli_inode_magic = LLI_INODE_MAGIC;
 464         memset(&lli->lli_id, 0, sizeof(lli->lli_id));
 465         sema_init(&lli->lli_och_sem, 1);
 466         lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
 467         lli->lli_mds_exec_och = NULL;
 468         lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
 469         lli->lli_open_fd_exec_count = 0;
 470 }
 471
 472 int ll_fill_super(struct super_block *sb, void *data, int silent)
 473 {
 474         struct ll_sb_info *sbi;
 475         char *lov = NULL;
 476         char *lmv = NULL;
 477         int async, err;
 478         char *sec = NULL;
 479         __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
 480         __u64 remote_flag = 0;
 481         ENTRY;
 482
 483         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 484
 485         sbi = lustre_init_sbi(sb);
 486         if (!sbi)
 487                 RETURN(-ENOMEM);
 488
 489         sbi->ll_flags |= LL_SBI_READAHEAD;
 490         ll_options(data, &lov, &lmv, &sec, &async, &sbi->ll_flags);
 491
 492         if (!lov) {
 493                 CERROR("no osc\n");
 494                 GOTO(out, err = -EINVAL);
 495         }
 496
 497         if (!lmv) {
 498                 CERROR("no mdc\n");
 499                 GOTO(out, err = -EINVAL);
 500         }
 501
 502         err = lustre_common_fill_super(sb, lmv, lov, async, sec, nllu,
 503                                        &remote_flag);
 504         EXIT;
 505 out:
 506         if (err)
 507                 lustre_free_sbi(sb);
 508
 509         if (sec)
 510                 OBD_FREE(sec, strlen(sec) + 1);
 511         if (lmv)
 512                 OBD_FREE(lmv, strlen(lmv) + 1);
 513         if (lov)
 514                 OBD_FREE(lov, strlen(lov) + 1);
 515         return err;
 516 } /* ll_read_super */
 517
 518 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
 519                               struct config_llog_instance *cfg, int allow_recov)
 520 {
 521         struct lustre_cfg *lcfg = NULL;
 522         struct lustre_cfg_bufs bufs;
 523         struct portals_cfg pcfg;
 524         char *peer = "MDS_PEER_UUID";
 525         struct obd_device *obd;
 526         struct lustre_handle md_conn = {0, };
 527         struct obd_export *exp;
 528         char *name = "mdc_dev";
 529         class_uuid_t uuid;
 530         struct obd_uuid lmv_uuid;
 531         struct llog_ctxt *ctxt;
 532         int rc = 0, err = 0;
 533         ENTRY;
 534
 535         if (lmd_bad_magic(lmd))
 536                 RETURN(-EINVAL);
 537
 538         generate_random_uuid(uuid);
 539         class_uuid_unparse(uuid, &lmv_uuid);
 540
 541         if (lmd->lmd_local_nid) {
 542                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
 543                 pcfg.pcfg_nal = lmd->lmd_nal;
 544                 pcfg.pcfg_nid = lmd->lmd_local_nid;
 545                 rc = libcfs_nal_cmd(&pcfg);
 546                 if (rc < 0)
 547                         GOTO(out, rc);
 548         }
 549
 550         if (lmd->lmd_nal == SOCKNAL ||
 551             lmd->lmd_nal == OPENIBNAL ||
 552             lmd->lmd_nal == IIBNAL ||
 553             lmd->lmd_nal == VIBNAL ||
 554             lmd->lmd_nal == RANAL) {
 555                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
 556                 pcfg.pcfg_nal     = lmd->lmd_nal;
 557                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 558                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
 559                 pcfg.pcfg_misc    = lmd->lmd_port;
 560                 rc = libcfs_nal_cmd(&pcfg);
 561                 if (rc < 0)
 562                         GOTO(out, rc);
 563         }
 564         lustre_cfg_bufs_reset(&bufs, name);
 565         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 566
 567         lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
 568         lcfg->lcfg_nal = lmd->lmd_nal;
 569         lcfg->lcfg_nid = lmd->lmd_server_nid;
 570         LASSERT(lcfg->lcfg_nal);
 571         LASSERT(lcfg->lcfg_nid);
 572         err = class_process_config(lcfg);
 573         lustre_cfg_free(lcfg);
 574         if (err < 0)
 575                 GOTO(out_del_conn, err);
 576
 577         lustre_cfg_bufs_reset(&bufs, name);
 578         lustre_cfg_bufs_set_string(&bufs, 1, LUSTRE_MDC_NAME);
 579         lustre_cfg_bufs_set_string(&bufs, 2, (char *)lmv_uuid.uuid);
 580
 581         lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
 582         err = class_process_config(lcfg);
 583         lustre_cfg_free(lcfg);
 584         if (err < 0)
 585                 GOTO(out_del_uuid, err);
 586
 587         lustre_cfg_bufs_reset(&bufs, name);
 588         lustre_cfg_bufs_set_string(&bufs, 1, lmd->lmd_mds);
 589         lustre_cfg_bufs_set_string(&bufs, 2, peer);
 590
 591         lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
 592         err = class_process_config(lcfg);
 593         lustre_cfg_free(lcfg);
 594         if (err < 0)
 595                 GOTO(out_detach, err);
 596
 597         obd = class_name2obd(name);
 598         if (obd == NULL)
 599                 GOTO(out_cleanup, rc = -EINVAL);
 600
 601         rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
 602                           strlen(lmd->lmd_security), lmd->lmd_security);
 603         if (rc)
 604                 GOTO(out_cleanup, rc);
 605
 606         /* Disable initial recovery on this import */
 607         rc = obd_set_info(obd->obd_self_export,
 608                           strlen("initial_recov"), "initial_recov",
 609                           sizeof(allow_recov), &allow_recov);
 610         if (rc)
 611                 GOTO(out_cleanup, rc);
 612
 613         rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, 0);
 614         if (rc) {
 615                 CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
 616                 GOTO(out_cleanup, rc);
 617         }
 618
 619         exp = class_conn2export(&md_conn);
 620
 621         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
 622         rc = class_config_process_llog(ctxt, profile, cfg);
 623         if (rc)
 624                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 625
 626         err = obd_disconnect(exp, 0);
 627
 628         EXIT;
 629 out_cleanup:
 630         lustre_cfg_bufs_reset(&bufs, name);
 631         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 632         err = class_process_config(lcfg);
 633         lustre_cfg_free(lcfg);
 634         if (err < 0)
 635                 GOTO(out, err);
 636 out_detach:
 637         lustre_cfg_bufs_reset(&bufs, name);
 638         lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
 639         err = class_process_config(lcfg);
 640         lustre_cfg_free(lcfg);
 641         if (err < 0)
 642                 GOTO(out, err);
 643
 644 out_del_uuid:
 645         lustre_cfg_bufs_reset(&bufs, name);
 646         lustre_cfg_bufs_set_string(&bufs, 1, peer);
 647         lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
 648         err = class_process_config(lcfg);
 649         lustre_cfg_free(lcfg);
 650
 651 out_del_conn:
 652         if (lmd->lmd_nal == SOCKNAL ||
 653             lmd->lmd_nal == OPENIBNAL ||
 654             lmd->lmd_nal == IIBNAL ||
 655             lmd->lmd_nal == VIBNAL ||
 656             lmd->lmd_nal == RANAL) {
 657                 int err2;
 658
 659                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
 660                 pcfg.pcfg_nal     = lmd->lmd_nal;
 661                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
 662                 pcfg.pcfg_flags   = 1;          /* single_share */
 663                 err2 = libcfs_nal_cmd(&pcfg);
 664                 if (err2 && !err)
 665                         err = err2;
 666                 if (err < 0)
 667                         GOTO(out, err);
 668         }
 669 out:
 670         if (rc == 0)
 671                 rc = err;
 672
 673         return rc;
 674 }
 675
 676 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 677 {
 678         struct lustre_cfg *lcfg;
 679         struct lustre_cfg_bufs bufs;
 680         struct obd_device *obd;
 681         int next = 0;
 682
 683         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
 684         {
 685                 int err;
 686
 687                 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
 688                 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
 689                 err = class_process_config(lcfg);
 690                 if (err) {
 691                         CERROR("cleanup failed: %s\n", obd->obd_name);
 692                         //continue;
 693                 }
 694
 695                 lcfg->lcfg_command = LCFG_DETACH;
 696                 err = class_process_config(lcfg);
 697                 lustre_cfg_free(lcfg);
 698                 if (err) {
 699                         CERROR("detach failed: %s\n", obd->obd_name);
 700                         //continue;
 701                 }
 702         }
 703
 704         if (sbi->ll_lmd != NULL)
 705                 class_del_profile(sbi->ll_lmd->lmd_profile);
 706 }
 707
 708 int lustre_fill_super(struct super_block *sb, void *data, int silent)
 709 {
 710         struct lustre_mount_data * lmd = data;
 711         char *lov = NULL, *lmv = NULL;
 712         struct ll_sb_info *sbi;
 713         int err;
 714         ENTRY;
 715
 716         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 717         if (lmd_bad_magic(lmd))
 718                 RETURN(-EINVAL);
 719
 720         sbi = lustre_init_sbi(sb);
 721         if (!sbi)
 722                 RETURN(-ENOMEM);
 723
 724         sbi->ll_flags |= LL_SBI_READAHEAD;
 725
 726         if (lmd->lmd_profile) {
 727                 struct lustre_profile *lprof;
 728                 struct config_llog_instance cfg;
 729                 int len;
 730
 731                 if (lmd->lmd_mds[0] == '\0') {
 732                         CERROR("no mds name\n");
 733                         GOTO(out_free, err = -EINVAL);
 734                 }
 735                 lmd->lmd_security[sizeof(lmd->lmd_security) - 1] = 0;
 736
 737                 OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 738                 if (sbi->ll_lmd == NULL)
 739                         GOTO(out_free, err = -ENOMEM);
 740                 memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
 741
 742                 /* generate a string unique to this super, let's try
 743                  the address of the super itself.*/
 744                 len = (sizeof(sb) * 2) + 1;
 745                 OBD_ALLOC(sbi->ll_instance, len);
 746                 if (sbi->ll_instance == NULL)
 747                         GOTO(out_free, err = -ENOMEM);
 748                 sprintf(sbi->ll_instance, "%p", sb);
 749
 750                 cfg.cfg_instance = sbi->ll_instance;
 751                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 752                 cfg.cfg_local_nid = lmd->lmd_local_nid;
 753                 err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
 754                 if (err < 0) {
 755                         CERROR("Unable to process log: %s\n", lmd->lmd_profile);
 756                         GOTO(out_free, err);
 757                 }
 758
 759                 lprof = class_get_profile(lmd->lmd_profile);
 760                 if (lprof == NULL) {
 761                         CERROR("No profile found: %s\n", lmd->lmd_profile);
 762                         GOTO(out_free, err = -EINVAL);
 763                 }
 764                 if (lov)
 765                         OBD_FREE(lov, strlen(lov) + 1);
 766                 OBD_ALLOC(lov, strlen(lprof->lp_lov) +
 767                           strlen(sbi->ll_instance) + 2);
 768                 sprintf(lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
 769
 770                 if (lmv)
 771                         OBD_FREE(lmv, strlen(lmv) + 1);
 772                 OBD_ALLOC(lmv, strlen(lprof->lp_lmv) +
 773                           strlen(sbi->ll_instance) + 2);
 774                 sprintf(lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
 775         }
 776
 777         if (!lov) {
 778                 CERROR("no osc\n");
 779                 GOTO(out_free, err = -EINVAL);
 780         }
 781
 782         if (!lmv) {
 783                 CERROR("no mdc\n");
 784                 GOTO(out_free, err = -EINVAL);
 785         }
 786
 787         err = lustre_common_fill_super(sb, lmv, lov, lmd->lmd_async,
 788                                        lmd->lmd_security, &lmd->lmd_nllu,
 789                                        &lmd->lmd_remote_flag);
 790
 791         if (err)
 792                 GOTO(out_free, err);
 793
 794 out_dev:
 795         if (lmv)
 796                 OBD_FREE(lmv, strlen(lmv) + 1);
 797         if (lov)
 798                 OBD_FREE(lov, strlen(lov) + 1);
 799
 800         RETURN(err);
 801
 802 out_free:
 803         if (sbi->ll_lmd) {
 804                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 805                 int err;
 806
 807                 if (sbi->ll_instance != NULL) {
 808                         struct lustre_mount_data *lmd = sbi->ll_lmd;
 809                         struct config_llog_instance cfg;
 810                         char *cl_prof;
 811
 812                         cfg.cfg_instance = sbi->ll_instance;
 813                         cfg.cfg_uuid = sbi->ll_sb_uuid;
 814
 815                         OBD_ALLOC(cl_prof, len);
 816                         sprintf(cl_prof, "%s-clean", lmd->lmd_profile);
 817                         err = lustre_process_log(lmd, cl_prof, &cfg, 0);
 818                         if (err < 0) {
 819                                 CERROR("Unable to process log: %s\n", cl_prof);
 820                                 lustre_manual_cleanup(sbi);
 821                         }
 822                         OBD_FREE(cl_prof, len);
 823                         OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 824                 }
 825                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 826         }
 827         lustre_free_sbi(sb);
 828         goto out_dev;
 829 } /* lustre_fill_super */
 830
 831 void lustre_put_super(struct super_block *sb)
 832 {
 833         struct obd_device *obd;
 834         struct ll_sb_info *sbi = ll_s2sbi(sb);
 835         int force_umount = 0;
 836         ENTRY;
 837
 838         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 839         obd = class_exp2obd(sbi->ll_md_exp);
 840         if (obd)
 841                 force_umount = obd->obd_no_recov;
 842         obd = NULL;
 843
 844         lustre_common_put_super(sb);
 845         if (sbi->ll_lmd != NULL) {
 846                 char *cl_prof;
 847                 int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
 848                 int err;
 849                 struct config_llog_instance cfg;
 850
 851                 if (force_umount) {
 852                         CERROR("force umount, doing manual cleanup\n");
 853                         lustre_manual_cleanup(sbi);
 854                         GOTO(free_lmd, 0);
 855                 }
 856
 857                 cfg.cfg_instance = sbi->ll_instance;
 858                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 859
 860                 OBD_ALLOC(cl_prof, len);
 861                 sprintf(cl_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
 862                 err = lustre_process_log(sbi->ll_lmd, cl_prof, &cfg, 0);
 863                 if (err < 0) {
 864                         CERROR("Unable to process log: %s, doing manual cleanup"
 865                                "\n", cl_prof);
 866                         lustre_manual_cleanup(sbi);
 867                 }
 868
 869                 OBD_FREE(cl_prof, len);
 870         free_lmd:
 871                 OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
 872                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
 873         }
 874
 875         lustre_free_sbi(sb);
 876
 877         EXIT;
 878 } /* lustre_put_super */
 879
 880 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 881 {
 882         struct obd_export *md_exp = sbi->ll_md_exp;
 883         struct lustre_mount_data *lmd = sbi->ll_lmd;
 884         char *profile = lmd->lmd_profile, *name = NULL;
 885         struct config_llog_instance cfg;
 886         int rc, namelen =  0, version;
 887         struct llog_ctxt *ctxt;
 888         ENTRY;
 889
 890         if (profile == NULL)
 891                 RETURN(0);
 892         if (lmd == NULL) {
 893                 CERROR("Client not mounted with zero-conf; cannot process "
 894                        "update log.\n");
 895                 RETURN(0);
 896         }
 897
 898         rc = ldlm_cli_cancel_unused(md_exp->exp_obd->obd_namespace, NULL,
 899                                     LDLM_FL_CONFIG_CHANGE, NULL);
 900         if (rc != 0)
 901                 CWARN("ldlm_cli_cancel_unused(mdc): %d\n", rc);
 902
 903         rc = obd_cancel_unused(sbi->ll_dt_exp, NULL, LDLM_FL_CONFIG_CHANGE,
 904                                NULL);
 905         if (rc != 0)
 906                 CWARN("obd_cancel_unused(lov): %d\n", rc);
 907
 908         cfg.cfg_instance = sbi->ll_instance;
 909         cfg.cfg_uuid = sbi->ll_sb_uuid;
 910         cfg.cfg_local_nid = lmd->lmd_local_nid;
 911
 912         namelen = strlen(profile) + 20; /* -clean-######### */
 913         OBD_ALLOC(name, namelen);
 914         if (name == NULL)
 915                 RETURN(-ENOMEM);
 916
 917         if (clean) {
 918                 version = sbi->ll_config_version - 1;
 919                 sprintf(name, "%s-clean-%d", profile, version);
 920         } else {
 921                 version = sbi->ll_config_version + 1;
 922                 sprintf(name, "%s-%d", profile, version);
 923         }
 924
 925         CWARN("Applying configuration log %s\n", name);
 926
 927         ctxt = llog_get_context(&md_exp->exp_obd->obd_llogs,
 928                                 LLOG_CONFIG_REPL_CTXT);
 929         rc = class_config_process_llog(ctxt, name, &cfg);
 930         if (rc == 0)
 931                 sbi->ll_config_version = version;
 932         CWARN("Finished applying configuration log %s: %d\n", name, rc);
 933
 934         if (rc == 0 && clean == 0) {
 935                 struct lov_desc desc;
 936                 __u32 valsize;
 937                 int rc = 0;
 938
 939                 valsize = sizeof(desc);
 940                 rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
 941                                   "lovdesc", &valsize, &desc);
 942
 943                 rc = obd_init_ea_size(md_exp,
 944                                       obd_size_diskmd(sbi->ll_dt_exp, NULL),
 945                                       (desc.ld_tgt_count *
 946                                        sizeof(struct llog_cookie)));
 947         }
 948         OBD_FREE(name, namelen);
 949         RETURN(rc);
 950 }
 951
 952 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 953 {
 954         struct inode *inode = NULL;
 955         l_lock(&lock->l_resource->lr_namespace->ns_lock);
 956         if (lock->l_ast_data) {
 957                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
 958                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
 959                         inode = igrab(lock->l_ast_data);
 960                 } else {
 961                         inode = lock->l_ast_data;
 962                         CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
 963                                "l_ast_data %p is bogus: magic %0x8\n",
 964                                lock->l_ast_data, lli->lli_inode_magic);
 965                         inode = NULL;
 966                 }
 967         }
 968         l_unlock(&lock->l_resource->lr_namespace->ns_lock);
 969         return inode;
 970 }
 971
 972 int null_if_equal(struct ldlm_lock *lock, void *data)
 973 {
 974         if (data == lock->l_ast_data) {
 975                 lock->l_ast_data = NULL;
 976
 977                 if (lock->l_req_mode != lock->l_granted_mode)
 978                         LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
 979         }
 980
 981         return LDLM_ITER_CONTINUE;
 982 }
 983
 984 void ll_clear_inode(struct inode *inode)
 985 {
 986         struct lustre_id id;
 987         struct ll_inode_info *lli = ll_i2info(inode);
 988         struct ll_sb_info *sbi = ll_i2sbi(inode);
 989         ENTRY;
 990
 991         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
 992                inode->i_generation, inode);
 993
 994         lli->lli_inode_magic = LLI_INODE_DEAD;
 995         ll_inode2id(&id, inode);
 996
 997         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
 998         md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
 999
1000         LASSERT(!lli->lli_open_fd_write_count);
1001         LASSERT(!lli->lli_open_fd_read_count);
1002         LASSERT(!lli->lli_open_fd_exec_count);
1003         if (lli->lli_mds_write_och)
1004                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
1005         if (lli->lli_mds_exec_och)
1006                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
1007         if (lli->lli_mds_read_och)
1008                 ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
1009         if (lli->lli_smd)
1010                 obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
1011                                   null_if_equal, inode);
1012
1013         if (lli->lli_smd) {
1014                 obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
1015                 lli->lli_smd = NULL;
1016         }
1017
1018         if (lli->lli_mea) {
1019                 obd_free_memmd(sbi->ll_md_exp,
1020                                (struct lov_stripe_md **) &lli->lli_mea);
1021                 lli->lli_mea = NULL;
1022         }
1023
1024         if (lli->lli_symlink_name) {
1025                 OBD_FREE(lli->lli_symlink_name,
1026                          strlen(lli->lli_symlink_name) + 1);
1027                 lli->lli_symlink_name = NULL;
1028         }
1029         lli->lli_inode_magic = LLI_INODE_DEAD;
1030
1031         EXIT;
1032 }
1033
1034 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1035  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1036  * keep these values until such a time that objects are allocated for it.
1037  * We do the MDS operations first, as it is checking permissions for us.
1038  * We don't to the MDS RPC if there is nothing that we want to store there,
1039  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1040  * going to do an RPC anyways.
1041  *
1042  * If we are doing a truncate, we will send the mtime and ctime updates
1043  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1044  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1045  * at the same time.
1046  */
1047 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
1048 {
1049         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1050         struct ll_sb_info *sbi = ll_i2sbi(inode);
1051         struct ptlrpc_request *request = NULL;
1052         struct mdc_op_data *op_data;
1053         int ia_valid = attr->ia_valid;
1054         int err, rc = 0;
1055         ENTRY;
1056
1057         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
1058         lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats, LPROC_LL_SETATTR);
1059
1060         if (ia_valid & ATTR_SIZE) {
1061                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1062                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
1063                                attr->ia_size, ll_file_maxbytes(inode));
1064                         RETURN(-EFBIG);
1065                 }
1066
1067                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1068         }
1069
1070         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1071         if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
1072                 if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
1073                         RETURN(-EPERM);
1074         }
1075
1076         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1077         if (attr->ia_valid & ATTR_CTIME) {
1078                 attr->ia_ctime = CURRENT_TIME;
1079                 attr->ia_valid |= ATTR_CTIME_SET;
1080         }
1081         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
1082                 attr->ia_atime = CURRENT_TIME;
1083                 attr->ia_valid |= ATTR_ATIME_SET;
1084         }
1085         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
1086                 attr->ia_mtime = CURRENT_TIME;
1087                 attr->ia_valid |= ATTR_MTIME_SET;
1088         }
1089
1090         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1091                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1092                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1093                        LTIME_S(CURRENT_TIME));
1094
1095         if (lsm)
1096                 attr->ia_valid &= ~ATTR_SIZE;
1097
1098         /* If only OST attributes being set on objects, don't do MDS RPC.
1099          * In that case, we need to check permissions and update the local
1100          * inode ourselves so we can call obdo_from_inode() always. */
1101         if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
1102                 struct lustre_md md;
1103
1104                 OBD_ALLOC(op_data, sizeof(*op_data));
1105                 if (op_data == NULL)
1106                         RETURN(-ENOMEM);
1107                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1108
1109                 rc = md_setattr(sbi->ll_md_exp, op_data,
1110                                 attr, NULL, 0, NULL, 0, &request);
1111                 OBD_FREE(op_data, sizeof(*op_data));
1112                 if (rc) {
1113                         ptlrpc_req_finished(request);
1114                         if (rc != -EPERM && rc != -EACCES)
1115                                 CERROR("md_setattr fails: rc = %d\n", rc);
1116                         RETURN(rc);
1117                 }
1118
1119                 rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0,
1120                                        sbi->ll_dt_exp, &md);
1121                 if (rc) {
1122                         ptlrpc_req_finished(request);
1123                         RETURN(rc);
1124                 }
1125
1126                 /* We call inode_setattr to adjust timestamps, but we first
1127                  * clear ATTR_SIZE to avoid invoking vmtruncate.
1128                  *
1129                  * NB: ATTR_SIZE will only be set at this point if the size
1130                  * resides on the MDS, ie, this file has no objects. */
1131                 attr->ia_valid &= ~ATTR_SIZE;
1132
1133                 /*
1134                  * assigning inode_setattr() to @err to disable warning that
1135                  * function's result should be checked by by caller. error is
1136                  * impossible here, as vmtruncate() control path is disabled.
1137                  */
1138                 err = inode_setattr(inode, attr);
1139                 ll_update_inode(inode, &md);
1140                 ptlrpc_req_finished(request);
1141
1142                 if (!lsm || !S_ISREG(inode->i_mode)) {
1143                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
1144                         RETURN(0);
1145                 }
1146         } else {
1147                 /* The OST doesn't check permissions, but the alternative is
1148                  * a gratuitous RPC to the MDS.  We already rely on the client
1149                  * to do read/write/truncate permission checks, so is mtime OK?
1150                  */
1151                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
1152                         /* from sys_utime() */
1153                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
1154                                 if (current->fsuid != inode->i_uid &&
1155                                     (rc=ll_permission(inode,MAY_WRITE,NULL))!=0)
1156                                         RETURN(rc);
1157                         } else {
1158                                 /* from inode_change_ok() */
1159                                 if (current->fsuid != inode->i_uid &&
1160                                     !capable(CAP_FOWNER))
1161                                         RETURN(-EPERM);
1162                         }
1163                 }
1164
1165                 /* won't invoke vmtruncate, as we already cleared ATTR_SIZE */
1166                 err = inode_setattr(inode, attr);
1167                 /*
1168                  * assigning inode_setattr() to @err to disable warning that
1169                  * function's result should be checked by by caller. error is
1170                  * impossible here, as vmtruncate() control path is disabled.
1171                  */
1172         }
1173
1174         /* We really need to get our PW lock before we change inode->i_size.
1175          * If we don't we can race with other i_size updaters on our node, like
1176          * ll_file_read.  We can also race with i_size propogation to other
1177          * nodes through dirtying and writeback of final cached pages.  This
1178          * last one is especially bad for racing o_append users on other
1179          * nodes. */
1180         if (ia_valid & ATTR_SIZE) {
1181                 ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
1182                                                            OBD_OBJECT_EOF } };
1183                 struct lustre_handle lockh = { 0 };
1184                 struct ll_inode_info *lli = ll_i2info(inode);
1185                 int err, ast_flags = 0;
1186                 /* XXX when we fix the AST intents to pass the discard-range
1187                  * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
1188                  * XXX here. */
1189                 if (attr->ia_size == 0)
1190                         ast_flags = LDLM_AST_DISCARD_DATA;
1191
1192                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
1193                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
1194
1195                 if (rc != 0)
1196                         RETURN(rc);
1197
1198                 down(&lli->lli_size_sem);
1199                 lli->lli_size_pid = current->pid;
1200                 rc = vmtruncate(inode, attr->ia_size);
1201                 if (rc != 0) {
1202                         LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
1203                         lli->lli_size_pid = 0;
1204                         up(&lli->lli_size_sem);
1205                 }
1206
1207                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
1208                 if (err) {
1209                         CERROR("ll_extent_unlock failed: %d\n", err);
1210                         if (!rc)
1211                                 rc = err;
1212                 }
1213         } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
1214                 struct obdo *oa = NULL;
1215
1216                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
1217                        inode->i_ino, LTIME_S(attr->ia_mtime));
1218
1219                 oa = obdo_alloc();
1220                 if (oa == NULL)
1221                         RETURN(-ENOMEM);
1222
1223                 oa->o_id = lsm->lsm_object_id;
1224                 oa->o_gr = lsm->lsm_object_gr;
1225                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1226                 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1227                                 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1228                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1229                 obdo_free(oa);
1230                 if (rc)
1231                         CERROR("obd_setattr fails: rc = %d\n", rc);
1232         }
1233         RETURN(rc);
1234 }
1235
1236 int ll_setattr(struct dentry *de, struct iattr *attr)
1237 {
1238         LASSERT(de->d_inode);
1239         return ll_setattr_raw(de->d_inode, attr);
1240 }
1241
1242 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1243                        unsigned long max_age)
1244 {
1245         struct ll_sb_info *sbi = ll_s2sbi(sb);
1246         struct obd_statfs obd_osfs;
1247         int rc;
1248         ENTRY;
1249
1250         rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age);
1251         if (rc) {
1252                 CERROR("obd_statfs fails: rc = %d\n", rc);
1253                 RETURN(rc);
1254         }
1255
1256         osfs->os_type = sb->s_magic;
1257
1258         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1259                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1260
1261         rc = obd_statfs(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
1262         if (rc) {
1263                 CERROR("obd_statfs fails: rc = %d\n", rc);
1264                 RETURN(rc);
1265         }
1266
1267         CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1268                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1269                obd_osfs.os_files);
1270
1271         osfs->os_blocks = obd_osfs.os_blocks;
1272         osfs->os_bfree = obd_osfs.os_bfree;
1273         osfs->os_bavail = obd_osfs.os_bavail;
1274
1275         /* If we don't have as many objects free on the OST as inodes
1276          * on the MDS, we reduce the total number of inodes to
1277          * compensate, so that the "inodes in use" number is correct.
1278          */
1279         if (obd_osfs.os_ffree < osfs->os_ffree) {
1280                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1281                         obd_osfs.os_ffree;
1282                 osfs->os_ffree = obd_osfs.os_ffree;
1283         }
1284
1285         RETURN(rc);
1286 }
1287
1288 int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
1289 {
1290         struct obd_statfs osfs;
1291         int rc;
1292
1293         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p\n", sb);
1294         lprocfs_counter_incr(ll_s2sbi(sb)->ll_stats, LPROC_LL_STAFS);
1295
1296         /* For now we will always get up-to-date statfs values, but in the
1297          * future we may allow some amount of caching on the client (e.g.
1298          * from QOS or lprocfs updates). */
1299         rc = ll_statfs_internal(sb, &osfs, jiffies - 1);
1300         if (rc)
1301                 return rc;
1302
1303         statfs_unpack(sfs, &osfs);
1304
1305         if (sizeof(sfs->f_blocks) == 4) {
1306                 while (osfs.os_blocks > ~0UL) {
1307                         sfs->f_bsize <<= 1;
1308
1309                         osfs.os_blocks >>= 1;
1310                         osfs.os_bfree >>= 1;
1311                         osfs.os_bavail >>= 1;
1312                 }
1313         }
1314
1315         sfs->f_blocks = osfs.os_blocks;
1316         sfs->f_bfree = osfs.os_bfree;
1317         sfs->f_bavail = osfs.os_bavail;
1318
1319         return 0;
1320 }
1321
1322 void ll_update_inode(struct inode *inode, struct lustre_md *md)
1323 {
1324         struct ll_inode_info *lli = ll_i2info(inode);
1325         struct lov_stripe_md *lsm = md->lsm;
1326         struct mds_body *body = md->body;
1327         struct mea *mea = md->mea;
1328         struct posix_acl *ll_acl_access = md->acl_access;
1329         ENTRY;
1330
1331         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
1332
1333         if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
1334                 /* check for default striping info for dir. */
1335                 LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
1336         }
1337
1338         if (lsm != NULL) {
1339                 LASSERT(lsm->lsm_object_gr > 0);
1340                 if (lli->lli_smd == NULL) {
1341                         lli->lli_smd = lsm;
1342                         lli->lli_maxbytes = lsm->lsm_maxbytes;
1343                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
1344                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
1345                 } else {
1346                         int i;
1347                         if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
1348                                 CERROR("lsm mismatch for inode %ld\n",
1349                                        inode->i_ino);
1350                                 CERROR("lli_smd:\n");
1351                                 dump_lsm(D_ERROR, lli->lli_smd);
1352                                 CERROR("lsm:\n");
1353                                 dump_lsm(D_ERROR, lsm);
1354                                 LBUG();
1355                         }
1356                         /* XXX FIXME -- We should decide on a safer (atomic) and
1357                          * more elegant way to update the lsm */
1358                         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1359                                 lli->lli_smd->lsm_oinfo[i].loi_id =
1360                                         lsm->lsm_oinfo[i].loi_id;
1361                                 lli->lli_smd->lsm_oinfo[i].loi_gr =
1362                                         lsm->lsm_oinfo[i].loi_gr;
1363                                 lli->lli_smd->lsm_oinfo[i].loi_ost_idx =
1364                                         lsm->lsm_oinfo[i].loi_ost_idx;
1365                                 lli->lli_smd->lsm_oinfo[i].loi_ost_gen =
1366                                         lsm->lsm_oinfo[i].loi_ost_gen;
1367                         }
1368                 }
1369                 /* bug 2844 - limit i_blksize for broken user-space apps */
1370                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
1371                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
1372                 if (lli->lli_smd != lsm)
1373                         obd_free_memmd(ll_i2dtexp(inode), &lsm);
1374         }
1375
1376         if (mea != NULL) {
1377                 if (lli->lli_mea == NULL) {
1378                         lli->lli_mea = mea;
1379                 } else {
1380                         if (memcmp(lli->lli_mea, mea, body->eadatasize)) {
1381                                 CERROR("mea mismatch for inode %lu\n",
1382                                         inode->i_ino);
1383                                 LBUG();
1384                         }
1385                 }
1386                 if (lli->lli_mea != mea)
1387                         obd_free_memmd(ll_i2mdexp(inode),
1388                                        (struct lov_stripe_md **) &mea);
1389         }
1390
1391         if (body->valid & OBD_MD_FID)
1392                 id_assign_fid(&lli->lli_id, &body->id1);
1393
1394         if (body->valid & OBD_MD_FLID)
1395                 id_ino(&lli->lli_id) = id_ino(&body->id1);
1396
1397         if (body->valid & OBD_MD_FLGENER)
1398                 id_gen(&lli->lli_id) = id_gen(&body->id1);
1399
1400         spin_lock(&lli->lli_lock);
1401         if (ll_acl_access != NULL) {
1402                 if (lli->lli_acl_access != NULL)
1403                         posix_acl_release(lli->lli_acl_access);
1404                 lli->lli_acl_access = ll_acl_access;
1405         }
1406         spin_unlock(&lli->lli_lock);
1407
1408         if (body->valid & OBD_MD_FLID)
1409                 inode->i_ino = id_ino(&body->id1);
1410         if (body->valid & OBD_MD_FLGENER)
1411                 inode->i_generation = id_gen(&body->id1);
1412         if (body->valid & OBD_MD_FLATIME)
1413                 LTIME_S(inode->i_atime) = body->atime;
1414         if (body->valid & OBD_MD_FLMTIME &&
1415             body->mtime > LTIME_S(inode->i_mtime)) {
1416                 CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %u\n",
1417                        inode->i_ino, LTIME_S(inode->i_mtime), body->mtime);
1418                 LTIME_S(inode->i_mtime) = body->mtime;
1419         }
1420         if (body->valid & OBD_MD_FLCTIME &&
1421             body->ctime > LTIME_S(inode->i_ctime))
1422                 LTIME_S(inode->i_ctime) = body->ctime;
1423         if (body->valid & OBD_MD_FLMODE) {
1424                 inode->i_mode = (inode->i_mode & S_IFMT) |
1425                         (body->mode & ~S_IFMT);
1426         }
1427         if (body->valid & OBD_MD_FLTYPE) {
1428                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1429                         (body->mode & S_IFMT);
1430         }
1431         if (body->valid & OBD_MD_FLUID)
1432                 inode->i_uid = body->uid;
1433         if (body->valid & OBD_MD_FLGID)
1434                 inode->i_gid = body->gid;
1435         if (body->valid & OBD_MD_FLFLAGS)
1436                 inode->i_flags = body->flags;
1437         if (body->valid & OBD_MD_FLNLINK)
1438                 inode->i_nlink = body->nlink;
1439         if (body->valid & OBD_MD_FLRDEV)
1440 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1441                 inode->i_rdev = body->rdev;
1442 #else
1443                 inode->i_rdev = old_decode_dev(body->rdev);
1444 #endif
1445         if (body->valid & OBD_MD_FLSIZE)
1446                 inode->i_size = body->size;
1447         if (body->valid & OBD_MD_FLBLOCKS)
1448                 inode->i_blocks = body->blocks;
1449
1450         if (body->valid & OBD_MD_FLSIZE)
1451                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
1452
1453 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
1454         inode->i_dev = (kdev_t)id_group(&lli->lli_id);
1455 #endif
1456         LASSERT(id_fid(&lli->lli_id) != 0);
1457 }
1458
1459 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
1460 static struct backing_dev_info ll_backing_dev_info = {
1461         .ra_pages       = 0,    /* No readahead */
1462         .memory_backed  = 0,    /* Does contribute to dirty memory */
1463 };
1464 #endif
1465
1466 void ll_read_inode2(struct inode *inode, void *opaque)
1467 {
1468         struct lustre_md *md = opaque;
1469         struct ll_inode_info *lli = ll_i2info(inode);
1470         ENTRY;
1471
1472         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1473                inode->i_generation, inode);
1474
1475         ll_lli_init(lli);
1476
1477         LASSERT(!lli->lli_smd);
1478
1479         /* Core attributes from the MDS first.  This is a new inode, and
1480          * the VFS doesn't zero times in the core inode so we have to do
1481          * it ourselves.  They will be overwritten by either MDS or OST
1482          * attributes - we just need to make sure they aren't newer. */
1483         LTIME_S(inode->i_mtime) = 0;
1484         LTIME_S(inode->i_atime) = 0;
1485         LTIME_S(inode->i_ctime) = 0;
1486
1487         inode->i_rdev = 0;
1488         ll_update_inode(inode, md);
1489
1490         /* OIDEBUG(inode); */
1491
1492         if (S_ISREG(inode->i_mode)) {
1493                 inode->i_op = &ll_file_inode_operations;
1494                 inode->i_fop = &ll_file_operations;
1495                 inode->i_mapping->a_ops = &ll_aops;
1496                 EXIT;
1497         } else if (S_ISDIR(inode->i_mode)) {
1498                 inode->i_op = &ll_dir_inode_operations;
1499                 inode->i_fop = &ll_dir_operations;
1500                 inode->i_mapping->a_ops = &ll_dir_aops;
1501                 EXIT;
1502         } else if (S_ISLNK(inode->i_mode)) {
1503                 inode->i_op = &ll_fast_symlink_inode_operations;
1504                 EXIT;
1505         } else {
1506                 inode->i_op = &ll_special_inode_operations;
1507
1508 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1509                 init_special_inode(inode, inode->i_mode,
1510                                    kdev_t_to_nr(inode->i_rdev));
1511
1512                 /* initializing backing dev info. */
1513                 inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
1514 #else
1515                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
1516 #endif
1517                 lli->ll_save_ifop = inode->i_fop;
1518
1519                 if (S_ISCHR(inode->i_mode))
1520                         inode->i_fop = &ll_special_chr_inode_fops;
1521                 else if (S_ISBLK(inode->i_mode))
1522                         inode->i_fop = &ll_special_blk_inode_fops;
1523                 else if (S_ISFIFO(inode->i_mode))
1524                         inode->i_fop = &ll_special_fifo_inode_fops;
1525                 else if (S_ISSOCK(inode->i_mode))
1526                         inode->i_fop = &ll_special_sock_inode_fops;
1527
1528                 CWARN("saved %p, replaced with %p\n", lli->ll_save_ifop,
1529                       inode->i_fop);
1530
1531                 if (lli->ll_save_ifop->owner) {
1532                         CWARN("%p has owner %p\n", lli->ll_save_ifop,
1533                               lli->ll_save_ifop->owner);
1534                 }
1535                 EXIT;
1536         }
1537 }
1538
1539 void ll_delete_inode(struct inode *inode)
1540 {
1541         struct ll_sb_info *sbi = ll_i2sbi(inode);
1542         struct lustre_id id;
1543         int rc;
1544         ENTRY;
1545
1546         ll_inode2id(&id, inode);
1547
1548         rc = md_delete_inode(sbi->ll_md_exp, &id);
1549         if (rc) {
1550                 CERROR("md_delete_inode() failed, error %d\n",
1551                        rc);
1552         }
1553
1554         clear_inode(inode);
1555         EXIT;
1556 }
1557
1558 int ll_iocontrol(struct inode *inode, struct file *file,
1559                  unsigned int cmd, unsigned long arg)
1560 {
1561         struct ll_sb_info *sbi = ll_i2sbi(inode);
1562         struct ptlrpc_request *req = NULL;
1563         int rc, flags = 0;
1564         ENTRY;
1565
1566         switch(cmd) {
1567         case EXT3_IOC_GETFLAGS: {
1568                 struct lustre_id id;
1569                 __u64 valid = OBD_MD_FLFLAGS;
1570                 struct mds_body *body;
1571
1572                 ll_inode2id(&id, inode);
1573                 rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, 0, 0, &req);
1574                 if (rc) {
1575                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
1576                         RETURN(-abs(rc));
1577                 }
1578
1579                 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
1580
1581                 if (body->flags & S_APPEND)
1582                         flags |= EXT3_APPEND_FL;
1583                 if (body->flags & S_IMMUTABLE)
1584                         flags |= EXT3_IMMUTABLE_FL;
1585                 if (body->flags & S_NOATIME)
1586                         flags |= EXT3_NOATIME_FL;
1587
1588                 ptlrpc_req_finished (req);
1589
1590                 RETURN(put_user(flags, (int *)arg));
1591         }
1592         case EXT3_IOC_SETFLAGS: {
1593                 struct mdc_op_data *op_data;
1594                 struct iattr attr;
1595                 struct obdo *oa;
1596                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1597
1598                 if (get_user(flags, (int *)arg))
1599                         RETURN(-EFAULT);
1600
1601                 oa = obdo_alloc();
1602                 if (!oa)
1603                         RETURN(-ENOMEM);
1604
1605                 OBD_ALLOC(op_data, sizeof(*op_data));
1606                 if (op_data == NULL) {
1607                         obdo_free(oa);
1608                         RETURN(-ENOMEM);
1609                 }
1610                 ll_prepare_mdc_data(op_data, inode, NULL, NULL, 0, 0);
1611
1612                 memset(&attr, 0x0, sizeof(attr));
1613                 attr.ia_attr_flags = flags;
1614                 attr.ia_valid |= ATTR_ATTR_FLAG;
1615
1616                 rc = md_setattr(sbi->ll_md_exp, op_data,
1617                                 &attr, NULL, 0, NULL, 0, &req);
1618                 OBD_FREE(op_data, sizeof(*op_data));
1619                 if (rc) {
1620                         ptlrpc_req_finished(req);
1621                         if (rc != -EPERM && rc != -EACCES)
1622                                 CERROR("md_setattr fails: rc = %d\n", rc);
1623                         obdo_free(oa);
1624                         RETURN(rc);
1625                 }
1626                 ptlrpc_req_finished(req);
1627
1628                 oa->o_id = lsm->lsm_object_id;
1629                 oa->o_gr = lsm->lsm_object_gr;
1630                 oa->o_flags = flags;
1631                 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1632
1633                 rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL);
1634                 obdo_free(oa);
1635                 if (rc) {
1636                         if (rc != -EPERM && rc != -EACCES)
1637                                 CERROR("md_setattr fails: rc = %d\n", rc);
1638                         RETURN(rc);
1639                 }
1640
1641                 if (flags & EXT3_APPEND_FL)
1642                         inode->i_flags |= S_APPEND;
1643                 else
1644                         inode->i_flags &= ~S_APPEND;
1645                 if (flags & EXT3_IMMUTABLE_FL)
1646                         inode->i_flags |= S_IMMUTABLE;
1647                 else
1648                         inode->i_flags &= ~S_IMMUTABLE;
1649                 if (flags & EXT3_NOATIME_FL)
1650                         inode->i_flags |= S_NOATIME;
1651                 else
1652                         inode->i_flags &= ~S_NOATIME;
1653
1654                 RETURN(0);
1655         }
1656         default:
1657                 RETURN(-ENOSYS);
1658         }
1659
1660         RETURN(0);
1661 }
1662
1663 /* this is only called in the case of forced umount. */
1664 void ll_umount_begin(struct super_block *sb)
1665 {
1666         struct ll_sb_info *sbi = ll_s2sbi(sb);
1667         struct obd_ioctl_data ioc_data = { 0 };
1668         struct obd_device *obd;
1669         ENTRY;
1670
1671         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
1672                sb->s_count, atomic_read(&sb->s_active));
1673
1674         obd = class_exp2obd(sbi->ll_md_exp);
1675         if (obd == NULL) {
1676                 CERROR("Invalid MDC connection handle "LPX64"\n",
1677                        sbi->ll_md_exp->exp_handle.h_cookie);
1678                 EXIT;
1679                 return;
1680         }
1681         obd->obd_no_recov = 1;
1682         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
1683                       sizeof(ioc_data), &ioc_data, NULL);
1684
1685         obd = class_exp2obd(sbi->ll_dt_exp);
1686         if (obd == NULL) {
1687                 CERROR("Invalid LOV connection handle "LPX64"\n",
1688                        sbi->ll_dt_exp->exp_handle.h_cookie);
1689                 EXIT;
1690                 return;
1691         }
1692
1693         obd->obd_no_recov = 1;
1694         obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
1695                       sizeof(ioc_data), &ioc_data, NULL);
1696
1697         /*
1698          * really, we'd like to wait until there are no requests outstanding,
1699          * and then continue.  For now, we just invalidate the requests,
1700          * schedule, and hope.
1701          */
1702         schedule();
1703
1704         EXIT;
1705 }
1706
1707 int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
1708                   struct inode **inode, struct ptlrpc_request *req,
1709                   int offset, struct super_block *sb)
1710 {
1711         struct lustre_md md;
1712         int rc = 0;
1713
1714         rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
1715         if (rc)
1716                 RETURN(rc);
1717
1718         if (*inode) {
1719                 ll_update_inode(*inode, &md);
1720         } else {
1721                 LASSERT(sb);
1722                 *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
1723                 if (*inode == NULL || is_bad_inode(*inode)) {
1724                         /* free the lsm if we allocated one above */
1725                         if (md.lsm != NULL)
1726                                 obd_free_memmd(dt_exp, &md.lsm);
1727                         if (md.mea != NULL)
1728                                 obd_free_memmd(md_exp,
1729                                                (struct lov_stripe_md**)&md.mea);
1730                         rc = -ENOMEM;
1731                         CERROR("new_inode -fatal: rc %d\n", rc);
1732                 }
1733         }
1734
1735         RETURN(rc);
1736 }
1737
1738 int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
1739                char *filename, struct lustre_id *ret)
1740 {
1741         struct ptlrpc_request *request = NULL;
1742         struct mds_body *body;
1743         int rc;
1744
1745         rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
1746                              OBD_MD_FID, 0, &request);
1747         if (rc < 0) {
1748                 CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
1749                        filename, rc);
1750                 return rc;
1751         }
1752
1753         body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
1754         LASSERT(body != NULL);
1755         LASSERT_REPSWABBED(request, 0);
1756
1757         *ret = body->id1;
1758         ptlrpc_req_finished(request);
1759
1760         return rc;
1761 }