1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2003 Cluster File Systems, Inc.
5 * Author: Peter Braam <braam@clusterfs.com>
6 * Author: Andreas Dilger <adilger@clusterfs.com>
7 * Author: Phil Schwan <phil@clusterfs.com>
8 * Author: Mike Shaver <shaver@clusterfs.com>
10 * This file is part of Lustre, http://www.lustre.org.
12 * Lustre is free software; you can redistribute it and/or
13 * modify it under the terms of version 2 of the GNU General Public
14 * License as published by the Free Software Foundation.
16 * Lustre is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with Lustre; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 # define EXPORT_SYMTAB
29 #define DEBUG_SUBSYSTEM S_MDS
31 #include <linux/version.h>
32 #include <linux/module.h>
33 #include <linux/init.h>
34 #include <linux/version.h>
35 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
36 # include <linux/buffer_head.h>
37 # include <linux/workqueue.h>
39 # include <linux/locks.h>
42 #include <linux/obd_class.h>
43 #include <linux/obd_lov.h>
44 #include <linux/lustre_fsfilt.h>
45 #include <linux/lprocfs_status.h>
47 #include "mds_internal.h"
49 /* Exported function from this file are:
51 * mds_open - called by the intent handler
52 * mds_close - an rpc handling function
53 * mds_pin - an rpc handling function - which will go away
54 * mds_mfd_close - for force closing files when a client dies
58 * MDS file data handling: file data holds a handle for a file opened
62 static void mds_mfd_addref(void *mfdp)
64 struct mds_file_data *mfd = mfdp;
66 atomic_inc(&mfd->mfd_refcount);
67 CDEBUG(D_INFO, "GETting mfd %p : new refcount %d\n", mfd,
68 atomic_read(&mfd->mfd_refcount));
71 struct mds_file_data *mds_mfd_new(void)
73 struct mds_file_data *mfd;
75 OBD_ALLOC(mfd, sizeof *mfd);
77 CERROR("mds: out of memory\n");
81 atomic_set(&mfd->mfd_refcount, 2);
83 INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
84 class_handle_hash(&mfd->mfd_handle, mds_mfd_addref);
89 static struct mds_file_data *mds_handle2mfd(struct lustre_handle *handle)
92 LASSERT(handle != NULL);
93 RETURN(class_handle2object(handle->cookie));
96 static void mds_mfd_put(struct mds_file_data *mfd)
98 CDEBUG(D_INFO, "PUTting mfd %p : new refcount %d\n", mfd,
99 atomic_read(&mfd->mfd_refcount) - 1);
100 LASSERT(atomic_read(&mfd->mfd_refcount) > 0 &&
101 atomic_read(&mfd->mfd_refcount) < 0x5a5a);
102 if (atomic_dec_and_test(&mfd->mfd_refcount)) {
103 LASSERT(list_empty(&mfd->mfd_handle.h_link));
104 OBD_FREE(mfd, sizeof *mfd);
108 static void mds_mfd_destroy(struct mds_file_data *mfd)
110 class_handle_unhash(&mfd->mfd_handle);
115 /* Caller must hold mds->mds_epoch_sem */
116 static int mds_alloc_filterdata(struct inode *inode)
118 LASSERT(inode->i_filterdata == NULL);
119 OBD_ALLOC(inode->i_filterdata, sizeof(struct mds_filter_data));
120 if (inode->i_filterdata == NULL)
122 LASSERT(igrab(inode) == inode);
126 /* Caller must hold mds->mds_epoch_sem */
127 static void mds_free_filterdata(struct inode *inode)
129 LASSERT(inode->i_filterdata != NULL);
130 OBD_FREE(inode->i_filterdata, sizeof(struct mds_filter_data));
131 inode->i_filterdata = NULL;
135 /* Write access to a file: executors cause a negative count,
136 * writers a positive count. The semaphore is needed to perform
137 * a check for the sign and then increment or decrement atomically.
139 * This code is closely tied to the allocation of the d_fsdata and the
140 * MDS epoch, so we use the same semaphore for the whole lot.
142 * We could use a different semaphore for each file, if it ever shows
143 * up in a profile, which it won't.
145 * epoch argument is nonzero during recovery */
146 static int mds_get_write_access(struct mds_obd *mds, struct inode *inode,
151 down(&mds->mds_epoch_sem);
153 if (atomic_read(&inode->i_writecount) < 0) {
154 up(&mds->mds_epoch_sem);
159 if (MDS_FILTERDATA(inode) && MDS_FILTERDATA(inode)->io_epoch != 0) {
160 CDEBUG(D_INODE, "continuing MDS epoch "LPU64" for ino %lu/%u\n",
161 MDS_FILTERDATA(inode)->io_epoch, inode->i_ino,
162 inode->i_generation);
166 if (inode->i_filterdata == NULL)
167 mds_alloc_filterdata(inode);
168 if (inode->i_filterdata == NULL) {
172 if (epoch > mds->mds_io_epoch)
173 mds->mds_io_epoch = epoch;
176 MDS_FILTERDATA(inode)->io_epoch = mds->mds_io_epoch;
177 CDEBUG(D_INODE, "starting MDS epoch "LPU64" for ino %lu/%u\n",
178 mds->mds_io_epoch, inode->i_ino, inode->i_generation);
181 atomic_inc(&inode->i_writecount);
182 up(&mds->mds_epoch_sem);
186 /* Returns EAGAIN if the client needs to get size and/or cookies and close
187 * again -- which is never true if the file is about to be unlinked. Otherwise
188 * returns the number of remaining writers. */
189 static int mds_put_write_access(struct mds_obd *mds, struct inode *inode,
190 struct mds_body *body, int unlinking)
195 down(&mds->mds_epoch_sem);
196 atomic_dec(&inode->i_writecount);
197 rc = atomic_read(&inode->i_writecount);
201 if (!unlinking && !(body->valid & OBD_MD_FLSIZE))
202 GOTO(out, rc = EAGAIN);
204 mds_free_filterdata(inode);
206 up(&mds->mds_epoch_sem);
210 static int mds_deny_write_access(struct mds_obd *mds, struct inode *inode)
213 down(&mds->mds_epoch_sem);
214 if (atomic_read(&inode->i_writecount) > 0) {
215 up(&mds->mds_epoch_sem);
218 atomic_dec(&inode->i_writecount);
219 up(&mds->mds_epoch_sem);
223 static void mds_allow_write_access(struct inode *inode)
226 atomic_inc(&inode->i_writecount);
229 int mds_query_write_access(struct inode *inode)
232 RETURN(atomic_read(&inode->i_writecount));
235 /* This replaces the VFS dentry_open, it manages mfd and writecount */
236 static struct mds_file_data *mds_dentry_open(struct dentry *dentry,
237 struct vfsmount *mnt, int flags,
238 struct ptlrpc_request *req)
240 struct mds_export_data *med = &req->rq_export->exp_mds_data;
241 struct mds_obd *mds = mds_req2mds(req);
242 struct mds_file_data *mfd;
243 struct mds_body *body;
249 CERROR("mds: out of memory\n");
250 GOTO(cleanup_dentry, error = -ENOMEM);
253 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
255 if (flags & FMODE_WRITE) {
256 /* FIXME: in recovery, need to pass old epoch here */
257 error = mds_get_write_access(mds, dentry->d_inode, 0);
259 GOTO(cleanup_mfd, error);
260 body->io_epoch = MDS_FILTERDATA(dentry->d_inode)->io_epoch;
261 } else if (flags & FMODE_EXEC) {
262 error = mds_deny_write_access(mds, dentry->d_inode);
264 GOTO(cleanup_mfd, error);
269 /* Mark the file as open to handle open-unlink. */
271 DOWN_WRITE_I_ALLOC_SEM(dentry->d_inode);
272 mds_orphan_open_inc(dentry->d_inode);
273 UP_WRITE_I_ALLOC_SEM(dentry->d_inode);
275 mfd->mfd_mode = flags;
276 mfd->mfd_dentry = dentry;
277 mfd->mfd_xid = req->rq_xid;
279 spin_lock(&med->med_open_lock);
280 list_add(&mfd->mfd_list, &med->med_open_head);
281 spin_unlock(&med->med_open_lock);
284 body->handle.cookie = mfd->mfd_handle.h_cookie;
290 mds_mfd_destroy(mfd);
292 return ERR_PTR(error);
295 static void mds_objids_from_lmm(obd_id *ids, struct lov_mds_md *lmm,
296 struct lov_desc *desc)
299 for (i = 0; i < le32_to_cpu(lmm->lmm_stripe_count); i++) {
300 ids[le32_to_cpu(lmm->lmm_objects[i].l_ost_idx)] =
301 le64_to_cpu(lmm->lmm_objects[i].l_object_id);
305 /* Must be called with i_sem held */
306 static int mds_create_objects(struct ptlrpc_request *req, int offset,
307 struct mds_update_record *rec,
308 struct mds_obd *mds, struct obd_device *obd,
309 struct dentry *dchild, void **handle,
312 struct obdo *oa = NULL;
313 struct obd_trans_info oti = { 0 };
314 struct mds_body *body;
315 struct lov_stripe_md *lsm = NULL;
316 struct lov_mds_md *lmm = NULL;
317 struct inode *inode = dchild->d_inode;
319 int rc, lmm_bufsize, lmm_size;
322 if (rec->ur_flags & MDS_OPEN_DELAY_CREATE ||
323 !(rec->ur_flags & FMODE_WRITE))
326 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body));
328 if (!S_ISREG(inode->i_mode))
330 if (body->valid & OBD_MD_FLEASIZE)
333 OBD_ALLOC(*ids, mds->mds_dt_desc.ld_tgt_count * sizeof(**ids));
336 oti.oti_objid = *ids;
339 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
340 LASSERT(id_ino(rec->ur_id2));
341 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
342 lmm_size = rec->ur_eadatalen;
343 lmm = rec->ur_eadata;
347 *handle = fsfilt_start(obd,inode,FSFILT_OP_CREATE,NULL);
348 if (IS_ERR(*handle)) {
349 rc = PTR_ERR(*handle);
354 mds_objids_from_lmm(*ids, lmm, &mds->mds_dt_desc);
356 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
357 lmm_bufsize = req->rq_repmsg->buflens[offset];
359 LASSERT(lmm_bufsize >= lmm_size);
360 memcpy(lmm_buf, lmm, lmm_size);
361 rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size);
363 CERROR("open replay failed to set md:%d\n", rc);
367 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_ALLOC_OBDO))
368 GOTO(out_ids, rc = -ENOMEM);
372 GOTO(out_ids, rc = -ENOMEM);
373 oa->o_mode = S_IFREG | 0600;
374 oa->o_id = inode->i_ino;
375 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
376 oa->o_generation = inode->i_generation;
377 oa->o_uid = 0; /* must have 0 uid / gid on OST */
379 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
380 OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLGROUP;
383 obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|OBD_MD_FLMTIME|
386 if (!(rec->ur_flags & MDS_OPEN_HAS_OBJS)) {
387 /* check if things like lfs setstripe are sending us the ea */
388 if (rec->ur_flags & MDS_OPEN_HAS_EA) {
389 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
391 0, &lsm, rec->ur_eadata);
395 /* Per-directory striping default code removed, because
396 * it uses the same unnamed EA storage as the directory
397 * striping for CMD. -p */
399 LASSERT(oa->o_gr >= FILTER_GROUP_FIRST_MDS);
400 rc = obd_create(mds->mds_dt_exp, oa, &lsm, &oti);
405 CDEBUG(level, "error creating objects for "
406 "inode %lu: rc = %d\n",
409 CERROR("obd_create returned invalid "
416 rc = obd_iocontrol(OBD_IOC_LOV_SETEA, mds->mds_dt_exp,
417 0, &lsm, rec->ur_eadata);
421 lsm->lsm_object_id = oa->o_id;
422 lsm->lsm_object_gr = oa->o_gr;
425 oa->o_size = inode->i_size;
426 obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|
427 OBD_MD_FLMTIME| OBD_MD_FLCTIME| OBD_MD_FLSIZE);
428 rc = obd_setattr(mds->mds_dt_exp, oa, lsm, &oti);
430 CERROR("error setting attrs for inode %lu: rc %d\n",
433 CERROR("obd_setattr returned bad rc %d\n", rc);
440 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
441 obdo_refresh_inode(inode, oa, OBD_MD_FLBLKSZ);
443 LASSERT(lsm && lsm->lsm_object_id);
445 rc = obd_packmd(mds->mds_dt_exp, &lmm, lsm);
446 if (!id_ino(rec->ur_id2))
447 obd_free_memmd(mds->mds_dt_exp, &lsm);
450 body->eadatasize = rc;
453 *handle = fsfilt_start(obd, inode, FSFILT_OP_CREATE, NULL);
454 if (IS_ERR(*handle)) {
455 rc = PTR_ERR(*handle);
460 rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size);
461 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
462 lmm_bufsize = req->rq_repmsg->buflens[offset];
464 LASSERT(lmm_bufsize >= lmm_size);
466 memcpy(lmm_buf, lmm, lmm_size);
467 obd_free_diskmd(mds->mds_dt_exp, &lmm);
469 oti_free_cookies(&oti);
473 OBD_FREE(*ids, mds->mds_dt_desc.ld_tgt_count * sizeof(**ids));
479 static void reconstruct_open(struct mds_update_record *rec, int offset,
480 struct ptlrpc_request *req,
481 struct lustre_handle *child_lockh)
483 struct mds_export_data *med = &req->rq_export->exp_mds_data;
484 struct mds_client_data *mcd = med->med_mcd;
485 struct mds_obd *mds = mds_req2mds(req);
486 struct mds_file_data *mfd;
487 struct obd_device *obd = req->rq_export->exp_obd;
488 struct dentry *parent, *dchild;
489 struct ldlm_reply *rep;
490 struct mds_body *body;
496 LASSERT(offset == 3); /* only called via intent */
497 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
498 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
500 /* copy rc, transno and disp; steal locks */
501 mds_req_from_mcd(req, mcd);
502 intent_set_disposition(rep, mcd->mcd_last_data);
504 /* Only replay if create or open actually happened. */
505 if (!intent_disposition(rep, DISP_OPEN_CREATE | DISP_OPEN_OPEN) ) {
507 return; /* error looking up parent or child */
510 parent = mds_id2dentry(obd, rec->ur_id1, NULL);
511 LASSERTF(!IS_ERR(parent), "lid "DLID4" rc %ld\n",
512 OLID4(rec->ur_id1), PTR_ERR(parent));
514 dchild = ll_lookup_one_len(rec->ur_name, parent,
515 rec->ur_namelen - 1);
516 LASSERTF(!IS_ERR(dchild), "parent "DLID4" child %s rc %ld\n",
517 OLID4(rec->ur_id1), rec->ur_name, PTR_ERR(dchild));
519 if (!dchild->d_inode)
520 GOTO(out_dput, 0); /* child not present to open */
522 /* At this point, we know we have a child. We'll send
523 * it back _unless_ it not created and open failed. */
524 if (intent_disposition(rep, DISP_OPEN_OPEN) &&
525 !intent_disposition(rep, DISP_OPEN_CREATE) &&
529 /* get lock (write for O_CREAT, read otherwise) */
530 mds_pack_inode2body(obd, body, dchild->d_inode, 1);
531 if (S_ISREG(dchild->d_inode->i_mode)) {
532 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
536 LASSERT(rc == req->rq_status);
538 /* If we have LOV EA data, the OST holds size, mtime */
539 if (!(body->valid & OBD_MD_FLEASIZE))
540 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
541 OBD_MD_FLATIME | OBD_MD_FLMTIME);
544 /* If we have -EEXIST as the status, and we were asked to create
545 * exclusively, we can tell we failed because the file already existed.
547 if (req->rq_status == -EEXIST &&
548 ((rec->ur_flags & (MDS_OPEN_CREAT | MDS_OPEN_EXCL)) ==
549 (MDS_OPEN_CREAT | MDS_OPEN_EXCL))) {
553 /* If we didn't get as far as trying to open, then some locking thing
554 * probably went wrong, and we'll just bail here.
556 if (!intent_disposition(rep, DISP_OPEN_OPEN))
559 /* If we failed, then we must have failed opening, so don't look for
560 * file descriptor or anything, just give the client the bad news.
566 list_for_each(t, &med->med_open_head) {
567 mfd = list_entry(t, struct mds_file_data, mfd_list);
568 if (mfd->mfd_xid == req->rq_xid)
573 /* #warning "XXX fixme" bug 2991 */
574 /* Here it used to LASSERT(mfd) if exp_outstanding_reply != NULL.
575 * Now that exp_outstanding_reply is a list, it's just using mfd != NULL
576 * to detect a re-open */
578 mntget(mds->mds_vfsmnt);
579 CERROR("Re-opened file \n");
580 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt,
581 rec->ur_flags & ~MDS_OPEN_TRUNC, req);
583 CERROR("mds: out of memory\n");
584 GOTO(out_dput, req->rq_status = -ENOMEM);
588 body->handle.cookie = mfd->mfd_handle.h_cookie;
589 CDEBUG(D_INODE, "resend mfd %p, cookie "LPX64"\n", mfd,
590 mfd->mfd_handle.h_cookie);
600 /* do NOT or the MAY_*'s, you'll get the weakest */
601 static int accmode(int flags)
605 if (flags & FMODE_READ)
607 if (flags & (FMODE_WRITE|MDS_OPEN_TRUNC))
609 if (flags & FMODE_EXEC)
614 /* Handles object creation, actual opening, and I/O epoch */
615 static int mds_finish_open(struct ptlrpc_request *req, struct dentry *dchild,
616 struct mds_body *body, int flags, void **handle,
617 struct mds_update_record *rec,struct ldlm_reply *rep)
619 struct mds_obd *mds = mds_req2mds(req);
620 struct obd_device *obd = req->rq_export->exp_obd;
621 struct mds_file_data *mfd = NULL;
622 obd_id *ids = NULL; /* object IDs created */
627 /* atomically create objects if necessary */
628 down(&dchild->d_inode->i_sem);
629 mode = dchild->d_inode->i_mode;
630 if ((S_ISREG(mode) && !(body->valid & OBD_MD_FLEASIZE)) ||
631 (S_ISDIR(mode) && !(body->valid & OBD_MD_FLDIREA))) {
632 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
635 up(&dchild->d_inode->i_sem);
640 /* no EA: create objects */
641 if ((body->valid & OBD_MD_FLEASIZE) &&
642 (rec->ur_flags & MDS_OPEN_HAS_EA)) {
643 up(&dchild->d_inode->i_sem);
646 if (!(body->valid & OBD_MD_FLEASIZE)) {
647 /* no EA: create objects */
648 rc = mds_create_objects(req, 2, rec, mds, obd,
649 dchild, handle, &ids);
651 CERROR("mds_create_objects: rc = %d\n", rc);
652 up(&dchild->d_inode->i_sem);
656 if (S_ISREG(dchild->d_inode->i_mode) &&
657 (body->valid & OBD_MD_FLEASIZE)) {
658 rc = mds_revalidate_lov_ea(obd, dchild->d_inode,
661 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
664 up(&dchild->d_inode->i_sem);
669 /* If the inode has no EA data, then MDSs hold size, mtime */
670 if (S_ISREG(dchild->d_inode->i_mode) &&
671 !(body->valid & OBD_MD_FLEASIZE)) {
672 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
673 OBD_MD_FLATIME | OBD_MD_FLMTIME);
675 up(&dchild->d_inode->i_sem);
677 intent_set_disposition(rep, DISP_OPEN_OPEN);
678 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt, flags, req);
680 RETURN(PTR_ERR(mfd));
682 CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
683 mfd->mfd_handle.h_cookie);
685 mds_dt_update_objids(obd, ids);
686 OBD_FREE(ids, sizeof(*ids) * mds->mds_dt_desc.ld_tgt_count);
689 // mds_mfd_destroy(mfd);
693 static int mds_open_by_id(struct ptlrpc_request *req,
694 struct lustre_id *id,
695 struct mds_body *body, int flags,
696 struct mds_update_record *rec,
697 struct ldlm_reply *rep)
699 struct mds_obd *mds = mds_req2mds(req);
700 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
701 struct dentry *dchild;
702 char idname[LL_ID_NAMELEN];
707 down(&pending_dir->i_sem);
709 idlen = ll_id2str(idname, id_ino(id), id_gen(id));
711 dchild = lookup_one_len(idname, mds->mds_pending_dir,
713 if (IS_ERR(dchild)) {
714 up(&pending_dir->i_sem);
715 rc = PTR_ERR(dchild);
716 CERROR("error looking up %s in PENDING: rc = %d\n",
721 if (dchild->d_inode != NULL) {
722 up(&pending_dir->i_sem);
723 mds_inode_set_orphan(dchild->d_inode);
724 mds_pack_inode2body(req2obd(req), body,
727 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
728 intent_set_disposition(rep, DISP_LOOKUP_POS);
729 CWARN("Orphan %s found and opened in PENDING directory\n",
734 up(&pending_dir->i_sem);
737 * we didn't find it in PENDING so it isn't an orphan. See if it was a
738 * regular inode that was previously created.
740 dchild = mds_id2dentry(req2obd(req), id, NULL);
742 RETURN(PTR_ERR(dchild));
744 mds_pack_inode2body(req2obd(req), body,
747 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
748 intent_set_disposition(rep, DISP_LOOKUP_POS);
751 rc = mds_finish_open(req, dchild, body, flags, &handle, rec, rep);
752 rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
753 req, rc, rep ? rep->lock_policy_res1 : 0);
754 /* XXX what do we do here if mds_finish_transno itself failed? */
760 int mds_pin(struct ptlrpc_request *req, int offset)
762 struct obd_device *obd = req->rq_export->exp_obd;
763 struct mds_body *request_body, *reply_body;
764 struct lvfs_run_ctxt saved;
765 int rc, size = sizeof(*reply_body);
768 request_body = lustre_msg_buf(req->rq_reqmsg, offset,
769 sizeof(*request_body));
771 rc = lustre_pack_reply(req, 1, &size, NULL);
774 reply_body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*reply_body));
776 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
777 rc = mds_open_by_id(req, &request_body->id1, reply_body,
778 request_body->flags, NULL, NULL);
779 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
785 * get a lock on the ino to sync with creation WRT inode reuse (bug 2029). If
786 * child_lockh is NULL we just get the lock as a barrier to wait for other
787 * holders of this lock, and drop it right away again.
789 int mds_lock_new_child(struct obd_device *obd, struct inode *inode,
790 struct lustre_handle *child_lockh)
792 struct ldlm_res_id child_res_id = { .name = { inode->i_ino, 0, 1, 0 } };
793 struct lustre_handle lockh;
797 if (child_lockh == NULL)
798 child_lockh = &lockh;
800 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace, child_res_id,
801 LDLM_PLAIN, NULL, LCK_EX, &lock_flags,
802 mds_blocking_ast, ldlm_completion_ast, NULL,
803 NULL, NULL, 0, NULL, child_lockh);
805 CERROR("ldlm_cli_enqueue: %d\n", rc);
806 else if (child_lockh == &lockh)
807 ldlm_lock_decref(child_lockh, LCK_EX);
812 static int is_mount_object(struct dentry *dparent)
814 struct dentry *dchild;
816 if (!(dparent->d_inode->i_mode & S_ISUID))
819 dchild = lookup_one_len(".mntinfo", dparent, strlen(".mntinfo"));
820 if (IS_ERR(dchild) || dchild == NULL)
827 int mds_open(struct mds_update_record *rec, int offset,
828 struct ptlrpc_request *req, struct lustre_handle *child_lockh)
830 /* XXX ALLOCATE _something_ - 464 bytes on stack here */
831 struct obd_device *obd = req->rq_export->exp_obd;
832 struct mds_obd *mds = mds_req2mds(req);
833 struct ldlm_reply *rep = NULL;
834 struct mds_body *body = NULL;
835 struct dentry *dchild = NULL, *dparent = NULL;
836 struct mds_export_data *med;
837 struct lustre_handle parent_lockh[2] = {{0}, {0}};
838 int rc = 0, cleanup_phase = 0, acc_mode, created = 0;
839 int parent_mode = LCK_PR;
841 struct dentry_params dp;
842 struct mea *mea = NULL;
843 int mea_size, update_mode;
846 DEBUG_REQ(D_INODE, req, "parent "DLID4" name %*s mode %o",
847 OLID4(rec->ur_id1), rec->ur_namelen - 1, rec->ur_name,
850 if (offset == 3) { /* intent */
851 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
852 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
853 } else if (offset == 1) { /* non-intent reint */
854 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
860 MDS_CHECK_RESENT(req, reconstruct_open(rec, offset, req, child_lockh));
863 * Step 0: If we are passed a id, then we assume the client already
864 * opened this file and is only replaying the RPC, so we open the inode
865 * by fid (at some large expense in security).
867 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
868 CDEBUG(D_HA, "open obj "DLID4" name %*s mode %o\n",
869 OLID4(rec->ur_id2), rec->ur_namelen - 1,
870 rec->ur_name, rec->ur_mode);
872 LASSERT(id_ino(rec->ur_id2));
874 rc = mds_open_by_id(req, rec->ur_id2, body, rec->ur_flags,
879 /* We didn't find the correct inode on disk either, so we
880 * need to re-create it via a regular replay. */
881 LASSERT(rec->ur_flags & MDS_OPEN_CREAT);
883 LASSERT(!id_ino(rec->ur_id2));
886 LASSERT(offset == 3); /* If we got here, we must be called via intent */
888 med = &req->rq_export->exp_mds_data;
889 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) {
890 CERROR("test case OBD_FAIL_MDS_OPEN_PACK\n");
894 acc_mode = accmode(rec->ur_flags);
896 /* Step 1: Find and lock the parent */
897 if (rec->ur_flags & O_CREAT) {
898 /* XXX Well, in fact we only need this lock mode change if
899 in addition to O_CREAT, the file does not exist.
900 But we do not know if it exists or not yet */
901 parent_mode = LCK_PW;
904 if (rec->ur_namelen == 1) {
905 /* client (LMV) wants to open the file by id */
906 CDEBUG(D_OTHER, "OPEN by id "DLID4"\n", OLID4(rec->ur_id1));
907 dchild = mds_id2dentry(obd, rec->ur_id1, NULL);
908 if (IS_ERR(dchild)) {
909 rc = PTR_ERR(dparent);
910 CERROR("child lookup by an id error %d\n", rc);
916 dparent = mds_id2locked_dentry(obd, rec->ur_id1, NULL, parent_mode,
917 parent_lockh, &update_mode, rec->ur_name,
918 rec->ur_namelen - 1, MDS_INODELOCK_UPDATE);
919 if (IS_ERR(dparent)) {
920 rc = PTR_ERR(dparent);
922 CERROR("parent lookup for "DLID4" failed, error %d\n",
923 OLID4(rec->ur_id1), rc);
926 LASSERT(dparent->d_inode != NULL);
928 cleanup_phase = 1; /* parent dentry and lock */
930 /* try to retrieve MEA data for this dir */
931 rc = mds_md_get_attr(obd, dparent->d_inode, &mea, &mea_size);
937 * dir is already splitted, check is requested filename should *
938 * live at this MDS or at another one.
941 i = mea_name2idx(mea, rec->ur_name, rec->ur_namelen - 1);
942 if (mea->mea_master != id_group(&mea->mea_ids[i])) {
944 "%s: inapropriate MDS(%d) for %lu/%u:%s."
945 " should be %lu(%d)\n", obd->obd_name,
946 mea->mea_master, dparent->d_inode->i_ino,
947 dparent->d_inode->i_generation, rec->ur_name,
948 (unsigned long)id_group(&mea->mea_ids[i]), i);
949 GOTO(cleanup, rc = -ERESTART);
953 /* Step 2: Lookup the child */
954 dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
955 if (IS_ERR(dchild)) {
956 rc = PTR_ERR(dchild);
957 dchild = NULL; /* don't confuse mds_finish_transno() below */
962 cleanup_phase = 2; /* child dentry */
964 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
966 if (dchild->d_flags & DCACHE_CROSS_REF) {
967 struct ldlm_res_id res_id = { . name = {0} };
968 ldlm_policy_data_t policy;
971 mds_pack_dentry2body(obd, body, dchild, 1);
972 intent_set_disposition(rep, DISP_LOOKUP_POS);
974 CDEBUG(D_OTHER, "cross reference: "DLID4"\n",
977 res_id.name[0] = dchild->d_fid;
978 res_id.name[1] = dchild->d_mdsnum;
980 policy.l_inodebits.bits = MDS_INODELOCK_LOOKUP;
981 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace,
982 res_id, LDLM_IBITS, &policy,
983 LCK_PR, &flags, mds_blocking_ast,
984 ldlm_completion_ast, NULL, NULL,
985 NULL, 0, NULL, child_lockh);
987 if (parent_lockh[1].cookie != 0)
988 ldlm_lock_decref(parent_lockh + 1, update_mode);
990 ldlm_lock_decref(parent_lockh, parent_mode);
992 OBD_FREE(mea, mea_size);
999 intent_set_disposition(rep, DISP_LOOKUP_POS);
1001 intent_set_disposition(rep, DISP_LOOKUP_NEG);
1003 /* Step 3: If the child was negative, and we're supposed to, create it.*/
1004 if (dchild->d_inode == NULL) {
1007 struct inode *inode;
1009 ino = (unsigned long)id_ino(rec->ur_id2);
1011 rc = mds_try_to_split_dir(obd, dparent, &mea, 0,
1014 CDEBUG(D_OTHER, "%s: splitted %lu/%u - %d\n",
1015 obd->obd_name, dparent->d_inode->i_ino,
1016 dparent->d_inode->i_generation, rc);
1019 /* dir got splitted */
1020 GOTO(cleanup, rc = -ERESTART);
1021 } else if (rc < 0) {
1022 /* error happened during spitting */
1026 if (!(rec->ur_flags & MDS_OPEN_CREAT)) {
1028 * dentry is negative and we weren't supposed to create
1029 * object, get out of here.
1031 GOTO(cleanup, rc = -ENOENT);
1034 intent_set_disposition(rep, DISP_OPEN_CREATE);
1035 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_CREATE,
1037 if (IS_ERR(handle)) {
1038 rc = PTR_ERR(handle);
1042 dchild->d_fsdata = (void *) &dp;
1046 rc = ll_vfs_create(dparent->d_inode, dchild, rec->ur_mode, NULL);
1047 if (dchild->d_fsdata == (void *)(unsigned long)ino)
1048 dchild->d_fsdata = NULL;
1051 CDEBUG(D_INODE, "error during create: %d\n", rc);
1054 inode = dchild->d_inode;
1056 LASSERT(ino == inode->i_ino);
1058 /* written as part of setattr */
1059 inode->i_generation = id_gen(rec->ur_id2);
1060 CDEBUG(D_HA, "recreated ino %lu with gen %u\n",
1061 inode->i_ino, inode->i_generation);
1065 LTIME_S(iattr.ia_atime) = rec->ur_time;
1066 LTIME_S(iattr.ia_ctime) = rec->ur_time;
1067 LTIME_S(iattr.ia_mtime) = rec->ur_time;
1069 iattr.ia_uid = rec->ur_fsuid;
1070 if (dparent->d_inode->i_mode & S_ISGID)
1071 iattr.ia_gid = dparent->d_inode->i_gid;
1073 iattr.ia_gid = rec->ur_fsgid;
1075 iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
1076 ATTR_MTIME | ATTR_CTIME;
1078 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
1080 CERROR("error on child setattr: rc = %d\n", rc);
1082 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
1084 rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
1086 CERROR("error on parent setattr: rc = %d\n", rc);
1088 MD_COUNTER_INCREMENT(obd, create);
1091 down(&dchild->d_inode->i_sem);
1093 rc = mds_update_inode_sid(obd, dchild->d_inode,
1094 handle, rec->ur_id2);
1096 CERROR("mds_update_inode_sid() failed, "
1099 id_assign_fid(&body->id1, rec->ur_id2);
1102 * make sure, that fid is up-to-date.
1104 mds_set_last_fid(obd, id_fid(rec->ur_id2));
1106 rc = mds_alloc_inode_sid(obd, dchild->d_inode,
1107 handle, &body->id1);
1109 CERROR("mds_alloc_inode_sid() failed, "
1113 up(&dchild->d_inode->i_sem);
1115 if (!(rec->ur_flags & O_EXCL)) { /* bug 3313 */
1116 rc = fsfilt_commit(obd, dchild->d_inode->i_sb,
1117 dchild->d_inode, handle, 0);
1121 acc_mode = 0; /* Don't check for permissions */
1123 mds_pack_inode2body(obd, body, dchild->d_inode, 1);
1125 LASSERTF(!mds_inode_is_orphan(dchild->d_inode),
1126 "dchild %*s (%p) inode %p\n", dchild->d_name.len,
1127 dchild->d_name.name, dchild, dchild->d_inode);
1129 if (S_ISREG(dchild->d_inode->i_mode)) {
1130 /* Check permissions etc */
1131 rc = ll_permission(dchild->d_inode, acc_mode, NULL);
1135 /* Can't write to a read-only file */
1136 if (IS_RDONLY(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0)
1137 GOTO(cleanup, rc = -EPERM);
1139 /* An append-only file must be opened in append mode for
1141 if (IS_APPEND(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0 &&
1142 ((rec->ur_flags & MDS_OPEN_APPEND) == 0 ||
1143 (rec->ur_flags & MDS_OPEN_TRUNC) != 0))
1144 GOTO(cleanup, rc = -EPERM);
1147 if (!created && (rec->ur_flags & MDS_OPEN_CREAT) &&
1148 (rec->ur_flags & MDS_OPEN_EXCL)) {
1149 /* File already exists, we didn't just create it, and we
1150 * were passed O_EXCL; err-or. */
1151 GOTO(cleanup, rc = -EEXIST); // returns a lock to the client
1154 /* if we are following a symlink, don't open */
1155 if (S_ISLNK(dchild->d_inode->i_mode))
1156 GOTO(cleanup, rc = 0);
1158 if ((rec->ur_flags & MDS_OPEN_DIRECTORY) &&
1159 !S_ISDIR(dchild->d_inode->i_mode))
1160 GOTO(cleanup, rc = -ENOTDIR);
1162 if (S_ISDIR(dchild->d_inode->i_mode)) {
1163 if (rec->ur_flags & MDS_OPEN_CREAT ||
1164 rec->ur_flags & FMODE_WRITE) {
1165 /*we are trying to create or write a exist dir*/
1166 GOTO(cleanup, rc = -EISDIR);
1168 if (ll_permission(dchild->d_inode, acc_mode, NULL))
1169 GOTO(cleanup, rc = -EACCES);
1171 if (is_mount_object(dchild)) {
1172 CERROR("Found possible GNS mount object %*s; not "
1173 "opening.\n", dchild->d_name.len,
1174 dchild->d_name.name);
1175 GOTO(cleanup, rc = 0); // success, but don't really open
1179 /* Step 5: mds_open it */
1180 rc = mds_finish_open(req, dchild, body, rec->ur_flags, &handle,
1185 rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
1186 req, rc, rep ? rep->lock_policy_res1 : 0);
1188 switch (cleanup_phase) {
1190 if (rc && created) {
1191 int err = vfs_unlink(dparent->d_inode, dchild);
1193 CERROR("unlink(%*s) in error path: %d\n",
1194 dchild->d_name.len, dchild->d_name.name,
1197 } else if (created) {
1198 mds_lock_new_child(obd, dchild->d_inode, NULL);
1202 if (dparent == NULL)
1207 if (parent_lockh[1].cookie != 0)
1208 ldlm_lock_decref(parent_lockh + 1, update_mode);
1211 ldlm_lock_decref(parent_lockh, parent_mode);
1213 ptlrpc_save_lock (req, parent_lockh, parent_mode);
1216 OBD_FREE(mea, mea_size);
1220 /* Close a "file descriptor" and possibly unlink an orphan from the
1221 * PENDING directory. Caller must hold child->i_sem, this drops it.
1223 * If we are being called from mds_disconnect() because the client has
1224 * disappeared, then req == NULL and we do not update last_rcvd because
1225 * there is nothing that could be recovered by the client at this stage
1226 * (it will not even _have_ an entry in last_rcvd anymore).
1228 * Returns EAGAIN if the client needs to get more data and re-close. */
1229 int mds_mfd_close(struct ptlrpc_request *req, int offset,
1230 struct obd_device *obd, struct mds_file_data *mfd,
1233 struct inode *inode = mfd->mfd_dentry->d_inode;
1234 char idname[LL_ID_NAMELEN];
1235 int last_orphan, idlen, rc = 0, cleanup_phase = 0;
1236 struct dentry *pending_child = NULL;
1237 struct mds_obd *mds = &obd->u.mds;
1238 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
1239 void *handle = NULL;
1240 struct mds_body *request_body = NULL, *reply_body = NULL;
1241 struct dentry_params dp;
1242 struct iattr iattr = { 0 };
1243 struct llog_create_locks *lcl = NULL;
1246 if (req && req->rq_reqmsg != NULL)
1247 request_body = lustre_msg_buf(req->rq_reqmsg, offset,
1248 sizeof(*request_body));
1249 if (req && req->rq_repmsg != NULL)
1250 reply_body = lustre_msg_buf(req->rq_repmsg, 0,
1251 sizeof(*reply_body));
1253 idlen = ll_id2str(idname, inode->i_ino, inode->i_generation);
1254 CDEBUG(D_INODE, "inode %p ino %s nlink %d orphan %d\n", inode,
1255 idname, inode->i_nlink, mds_orphan_open_count(inode));
1257 last_orphan = mds_orphan_open_dec_test(inode) &&
1258 mds_inode_is_orphan(inode);
1259 UP_WRITE_I_ALLOC_SEM(inode);
1261 /* this is half of the actual "close" */
1262 if (mfd->mfd_mode & FMODE_WRITE) {
1263 rc = mds_put_write_access(mds, inode, request_body,
1264 last_orphan && unlink_orphan);
1265 } else if (mfd->mfd_mode & FMODE_EXEC) {
1266 mds_allow_write_access(inode);
1269 if (last_orphan && unlink_orphan) {
1270 struct lov_mds_md *lmm = NULL;
1271 int stripe_count = 0;
1272 LASSERT(rc == 0); /* mds_put_write_access must have succeeded */
1274 if (obd->obd_recovering) {
1275 CDEBUG(D_HA, "not remove orphan %s until recovery"
1276 " is over\n", idname);
1280 CDEBUG(D_HA, "destroying orphan object %s\n", idname);
1282 if ((S_ISREG(inode->i_mode) && inode->i_nlink != 1) ||
1283 (S_ISDIR(inode->i_mode) && inode->i_nlink != 2))
1284 CERROR("found \"orphan\" %s %s with link count %d\n",
1285 S_ISREG(inode->i_mode) ? "file" : "dir",
1286 idname, inode->i_nlink);
1288 * sadly, there is no easy way to save pending_child from
1289 * mds_reint_unlink() into mfd, so we need to re-lookup, but
1290 * normally it will still be in the dcache.
1292 down(&pending_dir->i_sem);
1293 cleanup_phase = 1; /* up(i_sem) when finished */
1294 pending_child = lookup_one_len(idname, mds->mds_pending_dir,
1296 if (IS_ERR(pending_child))
1297 GOTO(cleanup, rc = PTR_ERR(pending_child));
1298 LASSERT(pending_child->d_inode != NULL);
1300 cleanup_phase = 2; /* dput(pending_child) when finished */
1301 if (req != NULL && req->rq_repmsg != NULL) {
1302 lmm = lustre_msg_buf(req->rq_repmsg, 1, 0);
1303 stripe_count = le32_to_cpu(lmm->lmm_stripe_count);
1306 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK,
1307 NULL, stripe_count);
1308 if (IS_ERR(handle)) {
1309 rc = PTR_ERR(handle);
1314 pending_child->d_fsdata = (void *) &dp;
1317 if (S_ISDIR(pending_child->d_inode->i_mode))
1318 rc = vfs_rmdir(pending_dir, pending_child);
1320 rc = vfs_unlink(pending_dir, pending_child);
1322 CERROR("error unlinking orphan %s: rc %d\n",
1325 if (req != NULL && req->rq_repmsg != NULL &&
1326 (reply_body->valid & OBD_MD_FLEASIZE) &&
1327 mds_log_op_unlink(obd, pending_child->d_inode,
1328 lmm, req->rq_repmsg->buflens[1],
1329 lustre_msg_buf(req->rq_repmsg, 2, 0),
1330 req->rq_repmsg->buflens[2], &lcl) > 0) {
1331 reply_body->valid |= OBD_MD_FLCOOKIE;
1334 goto out; /* Don't bother updating attrs on unlinked inode */
1338 if (request_body != NULL && mfd->mfd_mode & FMODE_WRITE && rc == 0) {
1339 /* Update the on-disk attributes if this was the last write
1340 * close, and all information was provided (i.e., rc == 0)
1342 * XXX this should probably be abstracted with mds_reint_setattr
1345 if (request_body->valid & OBD_MD_FLMTIME &&
1346 LTIME_S(request_body->mtime) > LTIME_S(inode->i_mtime)) {
1347 LTIME_S(iattr.ia_mtime) = LTIME_S(request_body->mtime);
1348 iattr.ia_valid |= ATTR_MTIME;
1350 if (request_body->valid & OBD_MD_FLCTIME &&
1351 LTIME_S(request_body->ctime) > LTIME_S(inode->i_ctime)) {
1352 LTIME_S(iattr.ia_ctime) = LTIME_S(request_body->ctime);
1353 iattr.ia_valid |= ATTR_CTIME;
1356 /* XXX can't set block count with fsfilt_setattr (!) */
1357 if (request_body->valid & OBD_MD_FLSIZE) {
1358 iattr.ia_valid |= ATTR_SIZE;
1359 iattr.ia_size = request_body->size;
1361 /* if (request_body->valid & OBD_MD_FLBLOCKS) {
1362 iattr.ia_valid |= ATTR_BLOCKS;
1363 iattr.ia_blocks = request_body->blocks
1368 if (request_body != NULL && request_body->valid & OBD_MD_FLATIME) {
1369 /* Only start a transaction to write out only the atime if
1370 * it is more out-of-date than the specified limit. If we
1371 * are already going to write out the atime then do it anyway.
1373 if ((request_body->atime >
1374 LTIME_S(inode->i_atime) + MAX_ATIME_DIFF) ||
1375 (iattr.ia_valid != 0 &&
1376 request_body->atime > LTIME_S(inode->i_atime))) {
1377 LTIME_S(iattr.ia_atime) = request_body->atime;
1378 iattr.ia_valid |= ATTR_ATIME;
1382 if (iattr.ia_valid != 0) {
1383 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
1385 GOTO(cleanup, rc = PTR_ERR(handle));
1386 rc = fsfilt_setattr(obd, mfd->mfd_dentry, handle, &iattr, 0);
1388 CERROR("error in setattr(%s): rc %d\n", idname, rc);
1391 /* If other clients have this file open for write, rc will be > 0 */
1394 l_dput(mfd->mfd_dentry);
1395 mds_mfd_destroy(mfd);
1398 if (req != NULL && reply_body != NULL) {
1399 rc = mds_finish_transno(mds, pending_dir, handle, req, rc, 0);
1400 } else if (handle) {
1401 int err = fsfilt_commit(obd, mds->mds_sb, pending_dir, handle, 0);
1403 CERROR("error committing close: %d\n", err);
1409 switch (cleanup_phase) {
1412 ptlrpc_save_llog_lock(req, lcl);
1413 dput(pending_child);
1415 up(&pending_dir->i_sem);
1420 int mds_close(struct ptlrpc_request *req, int offset)
1422 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1423 struct obd_device *obd = req->rq_export->exp_obd;
1424 struct mds_body *body;
1425 struct mds_file_data *mfd;
1426 struct lvfs_run_ctxt saved;
1427 struct inode *inode;
1428 int rc, repsize[3] = {sizeof(struct mds_body),
1429 obd->u.mds.mds_max_mdsize,
1430 obd->u.mds.mds_max_cookiesize};
1432 MD_COUNTER_INCREMENT(obd, close);
1434 rc = lustre_pack_reply(req, 3, repsize, NULL);
1436 CERROR("lustre_pack_reply: rc = %d\n", rc);
1437 req->rq_status = rc;
1439 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1442 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1443 DEBUG_REQ(D_HA, req, "close replay\n");
1444 memcpy(lustre_msg_buf(req->rq_repmsg, 2, 0),
1445 lustre_msg_buf(req->rq_reqmsg, offset + 1, 0),
1446 req->rq_repmsg->buflens[2]);
1450 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1451 lustre_swab_mds_body);
1453 CERROR("Can't unpack body\n");
1454 req->rq_status = -EFAULT;
1458 if (body->flags & MDS_BFLAG_UNCOMMITTED_WRITES)
1459 /* do some stuff */ ;
1461 mfd = mds_handle2mfd(&body->handle);
1463 DEBUG_REQ(D_ERROR, req, "no handle for file close ino "LPD64
1464 ": cookie "LPX64, body->id1.li_stc.u.e3s.l3s_ino,
1465 body->handle.cookie);
1466 req->rq_status = -ESTALE;
1470 inode = mfd->mfd_dentry->d_inode;
1471 /* child i_alloc_sem protects orphan_dec_test && is_orphan race */
1472 DOWN_WRITE_I_ALLOC_SEM(inode); /* mds_mfd_close drops this */
1473 if (mds_inode_is_orphan(inode) && mds_orphan_open_count(inode) == 1) {
1474 struct mds_body *rep_body;
1476 rep_body = lustre_msg_buf(req->rq_repmsg, 0,
1477 sizeof (*rep_body));
1478 LASSERT(rep_body != NULL);
1480 mds_pack_inode2body(obd, rep_body, inode,
1481 (body->valid & OBD_MD_FID) ? 1 : 0);
1483 mds_pack_md(obd, req->rq_repmsg, 1, rep_body,
1484 inode, MDS_PACK_MD_LOCK);
1486 spin_lock(&med->med_open_lock);
1487 list_del(&mfd->mfd_list);
1488 spin_unlock(&med->med_open_lock);
1490 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1491 req->rq_status = mds_mfd_close(req, offset, obd, mfd, 1);
1492 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1494 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) {
1495 CERROR("test case OBD_FAIL_MDS_CLOSE_PACK\n");
1496 req->rq_status = -ENOMEM;
1505 int mds_done_writing(struct ptlrpc_request *req, int offset)
1507 struct mds_body *body;
1508 int rc, size = sizeof(struct mds_body);
1511 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1513 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1514 lustre_swab_mds_body);
1516 CERROR("Can't unpack body\n");
1517 req->rq_status = -EFAULT;
1521 rc = lustre_pack_reply(req, 1, &size, NULL);
1523 CERROR("lustre_pack_reply: rc = %d\n", rc);
1524 req->rq_status = rc;