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);
114 #ifdef IFILTERDATA_ACTUALLY_USED
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;
134 #endif /*IFILTERDATA_ACTUALLY_USED*/
136 /* Write access to a file: executors cause a negative count,
137 * writers a positive count. The semaphore is needed to perform
138 * a check for the sign and then increment or decrement atomically.
140 * This code is closely tied to the allocation of the d_fsdata and the
141 * MDS epoch, so we use the same semaphore for the whole lot.
143 * We could use a different semaphore for each file, if it ever shows
144 * up in a profile, which it won't.
146 * epoch argument is nonzero during recovery */
147 static int mds_get_write_access(struct mds_obd *mds, struct inode *inode,
152 down(&mds->mds_epoch_sem);
154 if (atomic_read(&inode->i_writecount) < 0) {
155 up(&mds->mds_epoch_sem);
159 #ifdef IFILTERDATA_ACTUALLY_USED
160 if (MDS_FILTERDATA(inode) && MDS_FILTERDATA(inode)->io_epoch != 0) {
161 CDEBUG(D_INODE, "continuing MDS epoch "LPU64" for ino %lu/%u\n",
162 MDS_FILTERDATA(inode)->io_epoch, inode->i_ino,
163 inode->i_generation);
167 if (inode->i_filterdata == NULL)
168 mds_alloc_filterdata(inode);
169 if (inode->i_filterdata == NULL) {
173 #endif /*IFILTERDATA_ACTUALLY_USED*/
174 if (epoch > mds->mds_io_epoch)
175 mds->mds_io_epoch = epoch;
178 #ifdef IFILTERDATA_ACTUALLY_USED
179 MDS_FILTERDATA(inode)->io_epoch = mds->mds_io_epoch;
180 CDEBUG(D_INODE, "starting MDS epoch "LPU64" for ino %lu/%u\n",
181 mds->mds_io_epoch, inode->i_ino, inode->i_generation);
183 #endif /*IFILTERDATA_ACTUALLY_USED*/
185 atomic_inc(&inode->i_writecount);
186 up(&mds->mds_epoch_sem);
190 /* Returns EAGAIN if the client needs to get size and/or cookies and close
191 * again -- which is never true if the file is about to be unlinked. Otherwise
192 * returns the number of remaining writers. */
193 static int mds_put_write_access(struct mds_obd *mds, struct inode *inode,
194 struct mds_body *body, int unlinking)
199 down(&mds->mds_epoch_sem);
200 atomic_dec(&inode->i_writecount);
201 rc = atomic_read(&inode->i_writecount);
205 if (!unlinking && !(body->valid & OBD_MD_FLSIZE))
206 GOTO(out, rc = EAGAIN);
208 #ifdef IFILTERDATA_ACTUALLY_USED
209 mds_free_filterdata(inode);
212 up(&mds->mds_epoch_sem);
216 static int mds_deny_write_access(struct mds_obd *mds, struct inode *inode)
219 down(&mds->mds_epoch_sem);
220 if (atomic_read(&inode->i_writecount) > 0) {
221 up(&mds->mds_epoch_sem);
224 atomic_dec(&inode->i_writecount);
225 up(&mds->mds_epoch_sem);
229 static void mds_allow_write_access(struct inode *inode)
232 atomic_inc(&inode->i_writecount);
235 int mds_query_write_access(struct inode *inode)
238 RETURN(atomic_read(&inode->i_writecount));
241 /* This replaces the VFS dentry_open, it manages mfd and writecount */
242 static struct mds_file_data *mds_dentry_open(struct dentry *dentry,
243 struct vfsmount *mnt, int flags,
244 struct ptlrpc_request *req)
246 struct mds_export_data *med = &req->rq_export->exp_mds_data;
247 struct mds_obd *mds = mds_req2mds(req);
248 struct mds_file_data *mfd;
249 struct mds_body *body;
255 CERROR("mds: out of memory\n");
256 GOTO(cleanup_dentry, error = -ENOMEM);
259 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
261 if (flags & FMODE_WRITE) {
262 /* FIXME: in recovery, need to pass old epoch here */
263 error = mds_get_write_access(mds, dentry->d_inode, 0);
265 GOTO(cleanup_mfd, error);
266 #ifdef IFILTERDATA_ACTUALLY_USED
267 body->io_epoch = MDS_FILTERDATA(dentry->d_inode)->io_epoch;
268 #endif /*IFILTERDATA_ACTUALLY_USED*/
269 } else if (flags & FMODE_EXEC) {
270 error = mds_deny_write_access(mds, dentry->d_inode);
272 GOTO(cleanup_mfd, error);
277 /* Mark the file as open to handle open-unlink. */
279 DOWN_WRITE_I_ALLOC_SEM(dentry->d_inode);
280 mds_orphan_open_inc(dentry->d_inode);
281 UP_WRITE_I_ALLOC_SEM(dentry->d_inode);
283 mfd->mfd_mode = flags;
284 mfd->mfd_dentry = dentry;
285 mfd->mfd_xid = req->rq_xid;
287 spin_lock(&med->med_open_lock);
288 list_add(&mfd->mfd_list, &med->med_open_head);
289 spin_unlock(&med->med_open_lock);
292 body->handle.cookie = mfd->mfd_handle.h_cookie;
298 mds_mfd_destroy(mfd);
300 return ERR_PTR(error);
303 static void mds_objids_from_lmm(obd_id *ids, struct lov_mds_md *lmm,
304 struct lov_desc *desc)
307 for (i = 0; i < le32_to_cpu(lmm->lmm_stripe_count); i++) {
308 ids[le32_to_cpu(lmm->lmm_objects[i].l_ost_idx)] =
309 le64_to_cpu(lmm->lmm_objects[i].l_object_id);
313 /* Must be called with i_sem held */
314 static int mds_create_objects(struct ptlrpc_request *req, int offset,
315 struct mds_update_record *rec,
316 struct mds_obd *mds, struct obd_device *obd,
317 struct dentry *dchild, void **handle,
320 struct obdo *oa = NULL;
321 struct obd_trans_info oti = { 0 };
322 struct mds_body *body;
323 struct lov_stripe_md *lsm = NULL;
324 struct lov_mds_md *lmm = NULL;
325 struct inode *inode = dchild->d_inode;
327 int rc, lmm_bufsize, lmm_size;
330 if (rec->ur_flags & MDS_OPEN_DELAY_CREATE ||
331 !(rec->ur_flags & FMODE_WRITE))
334 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body));
336 if (!S_ISREG(inode->i_mode))
338 if (body->valid & OBD_MD_FLEASIZE)
341 OBD_ALLOC(*ids, mds->mds_dt_desc.ld_tgt_count * sizeof(**ids));
344 oti.oti_objid = *ids;
347 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
348 LASSERT(id_ino(rec->ur_id2));
349 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
350 lmm_size = rec->ur_eadatalen;
351 lmm = rec->ur_eadata;
355 *handle = fsfilt_start(obd,inode,FSFILT_OP_CREATE,NULL);
356 if (IS_ERR(*handle)) {
357 rc = PTR_ERR(*handle);
362 mds_objids_from_lmm(*ids, lmm, &mds->mds_dt_desc);
364 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
365 lmm_bufsize = req->rq_repmsg->buflens[offset];
367 LASSERT(lmm_bufsize >= lmm_size);
368 memcpy(lmm_buf, lmm, lmm_size);
369 rc = fsfilt_set_md(obd, inode, *handle, lmm,
372 CERROR("open replay failed to set md:%d\n", rc);
376 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_ALLOC_OBDO))
377 GOTO(out_ids, rc = -ENOMEM);
381 GOTO(out_ids, rc = -ENOMEM);
382 oa->o_mode = S_IFREG | 0600;
383 oa->o_id = inode->i_ino;
384 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
385 oa->o_generation = inode->i_generation;
386 oa->o_uid = 0; /* must have 0 uid / gid on OST */
388 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
389 OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLGROUP;
392 obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|OBD_MD_FLMTIME|
395 if (!(rec->ur_flags & MDS_OPEN_HAS_OBJS)) {
396 /* check if things like lfs setstripe are sending us the ea */
397 if (rec->ur_flags & MDS_OPEN_HAS_EA) {
398 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
400 0, &lsm, rec->ur_eadata);
404 OBD_ALLOC(lmm, mds->mds_max_mdsize);
406 GOTO(out_oa, rc = -ENOMEM);
408 lmm_size = mds->mds_max_mdsize;
409 rc = mds_get_md(obd, dchild->d_parent->d_inode,
410 lmm, &lmm_size, 1, 0);
412 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
415 OBD_FREE(lmm, mds->mds_max_mdsize);
419 LASSERT(oa->o_gr >= FILTER_GROUP_FIRST_MDS);
420 rc = obd_create(mds->mds_dt_exp, oa, &lsm, &oti);
425 CDEBUG(level, "error creating objects for "
426 "inode %lu: rc = %d\n",
429 CERROR("obd_create returned invalid "
436 rc = obd_iocontrol(OBD_IOC_LOV_SETEA, mds->mds_dt_exp,
437 0, &lsm, rec->ur_eadata);
441 lsm->lsm_object_id = oa->o_id;
442 lsm->lsm_object_gr = oa->o_gr;
445 oa->o_size = inode->i_size;
446 obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|
447 OBD_MD_FLMTIME| OBD_MD_FLCTIME| OBD_MD_FLSIZE);
448 rc = obd_setattr(mds->mds_dt_exp, oa, lsm, &oti);
450 CERROR("error setting attrs for inode %lu: rc %d\n",
453 CERROR("obd_setattr returned bad rc %d\n", rc);
460 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
461 obdo_refresh_inode(inode, oa, OBD_MD_FLBLKSZ);
463 LASSERT(lsm && lsm->lsm_object_id);
465 rc = obd_packmd(mds->mds_dt_exp, &lmm, lsm);
466 if (!id_ino(rec->ur_id2))
467 obd_free_memmd(mds->mds_dt_exp, &lsm);
470 body->eadatasize = rc;
473 *handle = fsfilt_start(obd, inode, FSFILT_OP_CREATE, NULL);
474 if (IS_ERR(*handle)) {
475 rc = PTR_ERR(*handle);
480 rc = fsfilt_set_md(obd, inode, *handle, lmm,
483 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
484 lmm_bufsize = req->rq_repmsg->buflens[offset];
486 LASSERT(lmm_bufsize >= lmm_size);
488 memcpy(lmm_buf, lmm, lmm_size);
489 obd_free_diskmd(mds->mds_dt_exp, &lmm);
491 oti_free_cookies(&oti);
495 OBD_FREE(*ids, mds->mds_dt_desc.ld_tgt_count * sizeof(**ids));
499 obd_free_memmd(mds->mds_dt_exp, &lsm);
503 static void reconstruct_open(struct mds_update_record *rec, int offset,
504 struct ptlrpc_request *req,
505 struct lustre_handle *child_lockh)
507 struct mds_export_data *med = &req->rq_export->exp_mds_data;
508 struct mds_client_data *mcd = med->med_mcd;
509 struct mds_obd *mds = mds_req2mds(req);
510 struct mds_file_data *mfd;
511 struct obd_device *obd = req->rq_export->exp_obd;
512 struct dentry *parent, *dchild;
513 struct ldlm_reply *rep;
514 struct mds_body *body;
520 LASSERT(offset == 3); /* only called via intent */
521 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
522 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
524 /* copy rc, transno and disp; steal locks */
525 mds_req_from_mcd(req, mcd);
526 intent_set_disposition(rep, mcd->mcd_last_data);
528 /* Only replay if create or open actually happened. */
529 if (!intent_disposition(rep, DISP_OPEN_CREATE | DISP_OPEN_OPEN) ) {
531 return; /* error looking up parent or child */
534 parent = mds_id2dentry(obd, rec->ur_id1, NULL);
535 LASSERTF(!IS_ERR(parent), "lid "DLID4" rc %ld\n",
536 OLID4(rec->ur_id1), PTR_ERR(parent));
538 dchild = ll_lookup_one_len(rec->ur_name, parent,
539 rec->ur_namelen - 1);
540 LASSERTF(!IS_ERR(dchild), "parent "DLID4" child %s rc %ld\n",
541 OLID4(rec->ur_id1), rec->ur_name, PTR_ERR(dchild));
543 if (!dchild->d_inode)
544 GOTO(out_dput, 0); /* child not present to open */
546 /* At this point, we know we have a child. We'll send
547 * it back _unless_ it not created and open failed. */
548 if (intent_disposition(rep, DISP_OPEN_OPEN) &&
549 !intent_disposition(rep, DISP_OPEN_CREATE) &&
553 /* get lock (write for O_CREAT, read otherwise) */
554 mds_pack_inode2body(obd, body, dchild->d_inode, 1);
555 if (S_ISREG(dchild->d_inode->i_mode)) {
556 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
557 dchild->d_inode, 1, 0);
560 LASSERT(rc == req->rq_status);
562 /* If we have LOV EA data, the OST holds size, mtime */
563 if (!(body->valid & OBD_MD_FLEASIZE))
564 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
565 OBD_MD_FLATIME | OBD_MD_FLMTIME);
568 /* If we have -EEXIST as the status, and we were asked to create
569 * exclusively, we can tell we failed because the file already existed.
571 if (req->rq_status == -EEXIST &&
572 ((rec->ur_flags & (MDS_OPEN_CREAT | MDS_OPEN_EXCL)) ==
573 (MDS_OPEN_CREAT | MDS_OPEN_EXCL))) {
577 /* If we didn't get as far as trying to open, then some locking thing
578 * probably went wrong, and we'll just bail here.
580 if (!intent_disposition(rep, DISP_OPEN_OPEN))
583 /* If we failed, then we must have failed opening, so don't look for
584 * file descriptor or anything, just give the client the bad news.
590 list_for_each(t, &med->med_open_head) {
591 mfd = list_entry(t, struct mds_file_data, mfd_list);
592 if (mfd->mfd_xid == req->rq_xid)
597 /* #warning "XXX fixme" bug 2991 */
598 /* Here it used to LASSERT(mfd) if exp_outstanding_reply != NULL.
599 * Now that exp_outstanding_reply is a list, it's just using mfd != NULL
600 * to detect a re-open */
602 mntget(mds->mds_vfsmnt);
603 CERROR("Re-opened file \n");
604 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt,
605 rec->ur_flags & ~MDS_OPEN_TRUNC, req);
607 CERROR("mds: out of memory\n");
608 GOTO(out_dput, req->rq_status = -ENOMEM);
612 body->handle.cookie = mfd->mfd_handle.h_cookie;
613 CDEBUG(D_INODE, "resend mfd %p, cookie "LPX64"\n", mfd,
614 mfd->mfd_handle.h_cookie);
624 /* do NOT or the MAY_*'s, you'll get the weakest */
625 static int accmode(int flags)
629 if (flags & FMODE_READ)
631 if (flags & (FMODE_WRITE|MDS_OPEN_TRUNC))
633 if (flags & FMODE_EXEC)
638 /* Handles object creation, actual opening, and I/O epoch */
639 static int mds_finish_open(struct ptlrpc_request *req, struct dentry *dchild,
640 struct mds_body *body, int flags, void **handle,
641 struct mds_update_record *rec, struct ldlm_reply *rep)
643 struct mds_obd *mds = mds_req2mds(req);
644 struct obd_device *obd = req->rq_export->exp_obd;
645 struct mds_file_data *mfd = NULL;
646 obd_id *ids = NULL; /* object IDs created */
651 /* atomically create objects if necessary */
652 down(&dchild->d_inode->i_sem);
653 mode = dchild->d_inode->i_mode;
654 if ((S_ISREG(mode) && !(body->valid & OBD_MD_FLEASIZE)) ||
655 (S_ISDIR(mode) && !(body->valid & OBD_MD_FLDIREA))) {
656 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
657 dchild->d_inode, 0, 0);
659 up(&dchild->d_inode->i_sem);
664 /* no EA: create objects */
665 if ((body->valid & OBD_MD_FLEASIZE) &&
666 (rec->ur_flags & MDS_OPEN_HAS_EA)) {
667 up(&dchild->d_inode->i_sem);
670 if (!(body->valid & OBD_MD_FLEASIZE)) {
671 /* no EA: create objects */
672 rc = mds_create_objects(req, 2, rec, mds, obd,
673 dchild, handle, &ids);
675 CERROR("mds_create_objects: rc = %d\n", rc);
676 up(&dchild->d_inode->i_sem);
680 if (S_ISREG(dchild->d_inode->i_mode) &&
681 (body->valid & OBD_MD_FLEASIZE)) {
682 rc = mds_revalidate_lov_ea(obd, dchild->d_inode,
685 rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
686 dchild->d_inode, 0, 0);
688 up(&dchild->d_inode->i_sem);
693 rc = mds_pack_acl(obd, req->rq_repmsg, 3, body, dchild->d_inode);
695 CERROR("mds_pack_acl: rc = %d\n", rc);
696 up(&dchild->d_inode->i_sem);
700 /* If the inode has no EA data, then MDSs hold size, mtime */
701 if (S_ISREG(dchild->d_inode->i_mode) &&
702 !(body->valid & OBD_MD_FLEASIZE)) {
703 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
704 OBD_MD_FLATIME | OBD_MD_FLMTIME);
706 up(&dchild->d_inode->i_sem);
708 intent_set_disposition(rep, DISP_OPEN_OPEN);
709 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt, flags, req);
711 RETURN(PTR_ERR(mfd));
713 CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
714 mfd->mfd_handle.h_cookie);
716 mds_dt_update_objids(obd, ids);
717 OBD_FREE(ids, sizeof(*ids) * mds->mds_dt_desc.ld_tgt_count);
720 // mds_mfd_destroy(mfd);
724 static int mds_open_by_id(struct ptlrpc_request *req,
725 struct lustre_id *id,
726 struct mds_body *body, int flags,
727 struct mds_update_record *rec,
728 struct ldlm_reply *rep)
730 struct mds_obd *mds = mds_req2mds(req);
731 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
732 struct dentry *dchild;
733 char idname[LL_ID_NAMELEN];
738 down(&pending_dir->i_sem);
739 idlen = ll_id2str(idname, id_ino(id), id_gen(id));
740 dchild = lookup_one_len(idname, mds->mds_pending_dir,
742 if (IS_ERR(dchild)) {
743 up(&pending_dir->i_sem);
744 rc = PTR_ERR(dchild);
745 CERROR("error looking up %s in PENDING: rc = %d\n",
750 if (dchild->d_inode != NULL) {
751 mds_inode_set_orphan(dchild->d_inode);
752 mds_pack_inode2body(req2obd(req), body,
755 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
756 intent_set_disposition(rep, DISP_LOOKUP_POS);
757 CWARN("Orphan %s found and opened in PENDING directory\n",
764 * we didn't find it in PENDING so it isn't an orphan. See if it was a
765 * regular inode that was previously created.
767 dchild = mds_id2dentry(req2obd(req), id, NULL);
769 RETURN(PTR_ERR(dchild));
771 mds_pack_inode2body(req2obd(req), body,
774 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
775 intent_set_disposition(rep, DISP_LOOKUP_POS);
778 rc = mds_finish_open(req, dchild, body, flags, &handle, rec, rep);
779 rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
780 req, rc, rep ? rep->lock_policy_res1 : 0);
781 /* XXX what do we do here if mds_finish_transno itself failed? */
786 int mds_pin(struct ptlrpc_request *req, int offset)
788 struct obd_device *obd = req->rq_export->exp_obd;
789 struct mds_body *request_body, *reply_body;
790 struct lvfs_run_ctxt saved;
791 int rc, size = sizeof(*reply_body);
794 request_body = lustre_msg_buf(req->rq_reqmsg, offset,
795 sizeof(*request_body));
797 rc = lustre_pack_reply(req, 1, &size, NULL);
800 reply_body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*reply_body));
802 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
803 rc = mds_open_by_id(req, &request_body->id1, reply_body,
804 request_body->flags, NULL, NULL);
805 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
811 * get a lock on the ino to sync with creation WRT inode reuse (bug 2029). If
812 * child_lockh is NULL we just get the lock as a barrier to wait for other
813 * holders of this lock, and drop it right away again.
815 int mds_lock_new_child(struct obd_device *obd, struct inode *inode,
816 struct lustre_handle *child_lockh)
818 struct ldlm_res_id child_res_id = { .name = { inode->i_ino, 0, 1, 0 } };
819 struct lustre_handle lockh;
824 if (child_lockh == NULL)
825 child_lockh = &lockh;
827 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace, child_res_id,
828 LDLM_PLAIN, NULL, LCK_EX, &lock_flags,
829 mds_blocking_ast, ldlm_completion_ast, NULL,
830 NULL, NULL, 0, NULL, child_lockh);
832 CERROR("ldlm_cli_enqueue: %d\n", rc);
833 else if (child_lockh == &lockh)
834 ldlm_lock_decref(child_lockh, LCK_EX);
839 int mds_open(struct mds_update_record *rec, int offset,
840 struct ptlrpc_request *req, struct lustre_handle *child_lockh)
842 /* XXX ALLOCATE _something_ - 464 bytes on stack here */
843 struct obd_device *obd = req->rq_export->exp_obd;
844 struct mds_obd *mds = mds_req2mds(req);
845 struct ldlm_reply *rep = NULL;
846 struct mds_body *body = NULL;
847 struct dentry *dchild = NULL, *dparent = NULL;
848 struct mds_export_data *med;
849 struct lustre_handle parent_lockh[2] = {{0}, {0}};
850 int rc = 0, cleanup_phase = 0, acc_mode, created = 0;
851 int parent_mode = LCK_PR;
853 struct dentry_params dp;
854 struct mea *mea = NULL;
855 int mea_size, update_mode;
856 int child_mode = LCK_PR;
857 /* Always returning LOOKUP lock if open succesful to guard
859 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_LOOKUP}};
860 struct ldlm_res_id child_res_id = { .name = {0}};
864 DEBUG_REQ(D_INODE, req, "parent "DLID4" name %*s mode %o",
865 OLID4(rec->ur_id1), rec->ur_namelen - 1, rec->ur_name,
868 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PAUSE_OPEN | OBD_FAIL_ONCE,
869 (obd_timeout + 1) / 4);
871 if (offset == 3) { /* intent */
872 rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*rep));
873 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
874 } else if (offset == 1) { /* non-intent reint */
875 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
881 MDS_CHECK_RESENT(req, reconstruct_open(rec, offset, req, child_lockh));
884 * Step 0: If we are passed a id, then we assume the client already
885 * opened this file and is only replaying the RPC, so we open the inode
886 * by fid (at some large expense in security).
888 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
889 CDEBUG(D_HA, "open obj "DLID4" name %*s mode %o\n",
890 OLID4(rec->ur_id2), rec->ur_namelen - 1,
891 rec->ur_name, rec->ur_mode);
893 LASSERT(id_ino(rec->ur_id2));
895 rc = mds_open_by_id(req, rec->ur_id2, body, rec->ur_flags,
900 /* We didn't find the correct inode on disk either, so we
901 * need to re-create it via a regular replay. */
902 LASSERT(rec->ur_flags & MDS_OPEN_CREAT);
904 LASSERT(!id_ino(rec->ur_id2));
907 LASSERT(offset == 3); /* If we got here, we must be called via intent */
909 med = &req->rq_export->exp_mds_data;
910 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) {
911 CERROR("test case OBD_FAIL_MDS_OPEN_PACK\n");
915 acc_mode = accmode(rec->ur_flags);
917 /* Step 1: Find and lock the parent */
918 if (rec->ur_flags & MDS_OPEN_CREAT) {
919 /* XXX Well, in fact we only need this lock mode change if
920 in addition to O_CREAT, the file does not exist.
921 But we do not know if it exists or not yet */
922 parent_mode = LCK_PW;
925 if (rec->ur_namelen == 1) {
926 /* client (LMV) wants to open the file by id */
927 CDEBUG(D_OTHER, "OPEN by id "DLID4"\n", OLID4(rec->ur_id1));
928 dchild = mds_id2dentry(obd, rec->ur_id1, NULL);
929 if (IS_ERR(dchild)) {
930 rc = PTR_ERR(dparent);
931 CERROR("child lookup by an id error %d\n", rc);
937 dparent = mds_id2locked_dentry(obd, rec->ur_id1, NULL, parent_mode,
938 parent_lockh, &update_mode, rec->ur_name,
939 rec->ur_namelen - 1, MDS_INODELOCK_UPDATE);
940 if (IS_ERR(dparent)) {
941 rc = PTR_ERR(dparent);
943 CERROR("parent lookup for "DLID4" failed, error %d\n",
944 OLID4(rec->ur_id1), rc);
947 LASSERT(dparent->d_inode != NULL);
949 cleanup_phase = 1; /* parent dentry and lock */
951 /* try to retrieve MEA data for this dir */
952 rc = mds_md_get_attr(obd, dparent->d_inode, &mea, &mea_size);
958 * dir is already splitted, check is requested filename should *
959 * live at this MDS or at another one.
962 i = mea_name2idx(mea, rec->ur_name, rec->ur_namelen - 1);
963 if (mea->mea_master != id_group(&mea->mea_ids[i])) {
965 "%s: inapropriate MDS(%d) for %lu/%u:%s."
966 " should be %lu(%d)\n", obd->obd_name,
967 mea->mea_master, dparent->d_inode->i_ino,
968 dparent->d_inode->i_generation, rec->ur_name,
969 (unsigned long)id_group(&mea->mea_ids[i]), i);
970 GOTO(cleanup, rc = -ERESTART);
974 /* Step 2: Lookup the child */
975 dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
976 if (IS_ERR(dchild)) {
977 rc = PTR_ERR(dchild);
978 dchild = NULL; /* don't confuse mds_finish_transno() below */
983 cleanup_phase = 2; /* child dentry */
985 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
987 if (dchild->d_flags & DCACHE_CROSS_REF) {
988 struct ldlm_res_id res_id = { . name = {0} };
989 ldlm_policy_data_t policy;
992 mds_pack_dentry2body(obd, body, dchild, 1);
993 intent_set_disposition(rep, DISP_LOOKUP_POS);
995 CDEBUG(D_OTHER, "cross reference: "DLID4"\n",
998 res_id.name[0] = dchild->d_fid;
999 res_id.name[1] = dchild->d_mdsnum;
1001 policy.l_inodebits.bits = MDS_INODELOCK_LOOKUP;
1002 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace,
1003 res_id, LDLM_IBITS, &policy,
1004 LCK_PR, &flags, mds_blocking_ast,
1005 ldlm_completion_ast, NULL, NULL,
1006 NULL, 0, NULL, child_lockh);
1008 if (parent_lockh[1].cookie != 0)
1009 ldlm_lock_decref(parent_lockh + 1, update_mode);
1011 ldlm_lock_decref(parent_lockh, parent_mode);
1013 OBD_FREE(mea, mea_size);
1019 if (dchild->d_inode)
1020 intent_set_disposition(rep, DISP_LOOKUP_POS);
1022 intent_set_disposition(rep, DISP_LOOKUP_NEG);
1024 /* Step 3: If the child was negative, and we're supposed to, create it.*/
1025 if (dchild->d_inode == NULL) {
1028 struct inode *inode;
1030 ino = (unsigned long)id_ino(rec->ur_id2);
1032 rc = mds_try_to_split_dir(obd, dparent, &mea, 0,
1035 CDEBUG(D_OTHER, "%s: splitted %lu/%u - %d\n",
1036 obd->obd_name, dparent->d_inode->i_ino,
1037 dparent->d_inode->i_generation, rc);
1040 /* dir got splitted */
1041 GOTO(cleanup, rc = -ERESTART);
1042 } else if (rc < 0) {
1043 /* error happened during spitting */
1047 if (!(rec->ur_flags & MDS_OPEN_CREAT)) {
1049 * dentry is negative and we weren't supposed to create
1050 * object, get out of here.
1052 GOTO(cleanup, rc = -ENOENT);
1055 intent_set_disposition(rep, DISP_OPEN_CREATE);
1056 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_CREATE,
1058 if (IS_ERR(handle)) {
1059 rc = PTR_ERR(handle);
1063 dchild->d_fsdata = (void *) &dp;
1067 rc = ll_vfs_create(dparent->d_inode, dchild, rec->ur_mode, NULL);
1068 if (dchild->d_fsdata == (void *)(unsigned long)ino)
1069 dchild->d_fsdata = NULL;
1072 CDEBUG(D_INODE, "error during create: %d\n", rc);
1075 inode = dchild->d_inode;
1077 LASSERT(ino == inode->i_ino);
1079 /* written as part of setattr */
1080 inode->i_generation = id_gen(rec->ur_id2);
1081 CDEBUG(D_HA, "recreated ino %lu with gen %u\n",
1082 inode->i_ino, inode->i_generation);
1086 LTIME_S(iattr.ia_atime) = rec->ur_time;
1087 LTIME_S(iattr.ia_ctime) = rec->ur_time;
1088 LTIME_S(iattr.ia_mtime) = rec->ur_time;
1090 iattr.ia_uid = rec->ur_fsuid;
1091 if (dparent->d_inode->i_mode & S_ISGID)
1092 iattr.ia_gid = dparent->d_inode->i_gid;
1094 iattr.ia_gid = rec->ur_fsgid;
1096 iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
1097 ATTR_MTIME | ATTR_CTIME;
1099 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
1101 CERROR("error on child setattr: rc = %d\n", rc);
1103 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
1105 rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
1107 CERROR("error on parent setattr: rc = %d\n", rc);
1109 MD_COUNTER_INCREMENT(obd, create);
1112 down(&dchild->d_inode->i_sem);
1114 rc = mds_update_inode_sid(obd, dchild->d_inode,
1115 handle, rec->ur_id2);
1117 CERROR("mds_update_inode_sid() failed, "
1120 id_assign_fid(&body->id1, rec->ur_id2);
1123 * make sure, that fid is up-to-date.
1125 mds_set_last_fid(obd, id_fid(rec->ur_id2));
1127 rc = mds_alloc_inode_sid(obd, dchild->d_inode,
1128 handle, &body->id1);
1130 CERROR("mds_alloc_inode_sid() failed, "
1134 up(&dchild->d_inode->i_sem);
1136 if (!(rec->ur_flags & O_EXCL)) { /* bug 3313 */
1137 rc = fsfilt_commit(obd, dchild->d_inode->i_sb,
1138 dchild->d_inode, handle,
1139 req->rq_export->exp_sync);
1143 acc_mode = 0; /* Don't check for permissions */
1145 mds_pack_inode2body(obd, body, dchild->d_inode, 1);
1147 LASSERTF(!mds_inode_is_orphan(dchild->d_inode),
1148 "dchild %.*s (%p) inode %p\n", dchild->d_name.len,
1149 dchild->d_name.name, dchild, dchild->d_inode);
1151 if (S_ISREG(dchild->d_inode->i_mode)) {
1152 /* Check permissions etc */
1153 rc = ll_permission(dchild->d_inode, acc_mode, NULL);
1157 /* Can't write to a read-only file */
1158 if (IS_RDONLY(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0)
1159 GOTO(cleanup, rc = -EPERM);
1161 /* An append-only file must be opened in append mode for
1163 if (IS_APPEND(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0 &&
1164 ((rec->ur_flags & MDS_OPEN_APPEND) == 0 ||
1165 (rec->ur_flags & MDS_OPEN_TRUNC) != 0))
1166 GOTO(cleanup, rc = -EPERM);
1169 if (!created && (rec->ur_flags & MDS_OPEN_CREAT) &&
1170 (rec->ur_flags & MDS_OPEN_EXCL)) {
1171 /* File already exists, we didn't just create it, and we
1172 * were passed O_EXCL; err-or. */
1173 GOTO(cleanup, rc = -EEXIST); // returns a lock to the client
1176 if (S_ISDIR(dchild->d_inode->i_mode)) {
1177 if (rec->ur_flags & MDS_OPEN_CREAT ||
1178 rec->ur_flags & FMODE_WRITE) {
1179 /* we are trying to create or write a exist dir */
1180 GOTO(cleanup, rc = -EISDIR);
1182 if (ll_permission(dchild->d_inode, acc_mode, NULL))
1183 GOTO(cleanup, rc = -EACCES);
1185 /* skip GNS suid bit marked directories. */
1186 if (dchild->d_inode->i_mode & S_ISUID) {
1187 CDEBUG(D_INODE, "found GNS mount object %*s, not opening.\n",
1188 dchild->d_name.len, dchild->d_name.name);
1189 GOTO(cleanup, rc = 0); // success, but don't really open
1193 /* if we are following a symlink, don't open */
1194 if (S_ISLNK(dchild->d_inode->i_mode))
1195 GOTO(cleanup_no_trans, rc = 0);
1197 if ((rec->ur_flags & MDS_OPEN_DIRECTORY) &&
1198 !S_ISDIR(dchild->d_inode->i_mode))
1199 GOTO(cleanup, rc = -ENOTDIR);
1201 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_CREATE)) {
1202 obd_fail_loc = OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE;
1203 GOTO(cleanup, rc = -EAGAIN);
1206 /* Obtain OPEN lock as well */
1207 policy.l_inodebits.bits |= MDS_INODELOCK_OPEN;
1209 /* We cannot use acc_mode here, because it is zeroed in case of
1210 creating a file, so we get wrong lockmode */
1211 if (accmode(rec->ur_flags) & MAY_WRITE)
1212 child_mode = LCK_CW;
1213 else if (accmode(rec->ur_flags) & MAY_EXEC)
1214 child_mode = LCK_PR;
1216 child_mode = LCK_CR;
1218 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)) {
1219 struct lustre_id sid;
1221 down(&dchild->d_inode->i_sem);
1222 rc = mds_read_inode_sid(obd, dchild->d_inode, &sid);
1223 up(&dchild->d_inode->i_sem);
1225 CERROR("Can't read inode self id, "
1226 "inode %lu, rc %d\n",
1227 dchild->d_inode->i_ino, rc);
1231 /* In case of replay we do not get a lock assuming that the
1232 caller has it already */
1233 child_res_id.name[0] = id_fid(&sid);
1234 child_res_id.name[1] = id_group(&sid);
1236 rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace,
1237 child_res_id, LDLM_IBITS, &policy,
1238 child_mode, &lock_flags,
1239 mds_blocking_ast, ldlm_completion_ast,
1240 NULL, NULL, NULL, 0, NULL, child_lockh);
1247 /* Step 5: mds_open it */
1248 rc = mds_finish_open(req, dchild, body, rec->ur_flags, &handle,
1253 rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
1254 req, rc, rep ? rep->lock_policy_res1 : 0);
1257 switch (cleanup_phase) {
1260 ldlm_lock_decref(child_lockh, child_mode);
1261 child_lockh->cookie = 0;
1264 if (rc && created) {
1265 int err = vfs_unlink(dparent->d_inode, dchild);
1267 CERROR("unlink(%.*s) in error path: %d\n",
1268 dchild->d_name.len, dchild->d_name.name,
1271 } else if (created) {
1272 mds_lock_new_child(obd, dchild->d_inode, NULL);
1276 if (dparent == NULL)
1281 if (parent_lockh[1].cookie != 0)
1282 ldlm_lock_decref(parent_lockh + 1, update_mode);
1285 ldlm_lock_decref(parent_lockh, parent_mode);
1287 ptlrpc_save_lock (req, parent_lockh, parent_mode);
1290 OBD_FREE(mea, mea_size);
1292 atomic_inc(&mds->mds_open_count);
1295 * If we have not taken the "open" lock, we may not return 0 here,
1296 * because caller expects 0 to mean "lock is taken", and it needs
1297 * nonzero return here for caller to return EDLM_LOCK_ABORTED to
1298 * client. Later caller should rewrite the return value back to zero
1299 * if it to be used any further.
1301 if ((cleanup_phase != 3) && !rc)
1306 /* Close a "file descriptor" and possibly unlink an orphan from the
1307 * PENDING directory. Caller must hold child->i_sem, this drops it.
1309 * If we are being called from mds_disconnect() because the client has
1310 * disappeared, then req == NULL and we do not update last_rcvd because
1311 * there is nothing that could be recovered by the client at this stage
1312 * (it will not even _have_ an entry in last_rcvd anymore).
1314 * Returns EAGAIN if the client needs to get more data and re-close. */
1315 int mds_mfd_close(struct ptlrpc_request *req, int offset,
1316 struct obd_device *obd, struct mds_file_data *mfd,
1319 struct inode *inode = mfd->mfd_dentry->d_inode;
1320 char idname[LL_ID_NAMELEN];
1321 int last_orphan, idlen, rc = 0, cleanup_phase = 0;
1322 struct dentry *pending_child = NULL;
1323 struct mds_obd *mds = &obd->u.mds;
1324 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
1325 void *handle = NULL;
1326 struct mds_body *request_body = NULL, *reply_body = NULL;
1327 struct dentry_params dp;
1328 struct iattr iattr = { 0 };
1329 struct llog_create_locks *lcl = NULL;
1332 if (req && req->rq_reqmsg != NULL)
1333 request_body = lustre_msg_buf(req->rq_reqmsg, offset,
1334 sizeof(*request_body));
1335 if (req && req->rq_repmsg != NULL)
1336 reply_body = lustre_msg_buf(req->rq_repmsg, 0,
1337 sizeof(*reply_body));
1339 idlen = ll_id2str(idname, inode->i_ino, inode->i_generation);
1340 CDEBUG(D_INODE, "inode %p ino %s nlink %d orphan %d\n", inode,
1341 idname, inode->i_nlink, mds_orphan_open_count(inode));
1343 last_orphan = mds_orphan_open_dec_test(inode) &&
1344 mds_inode_is_orphan(inode);
1345 UP_WRITE_I_ALLOC_SEM(inode);
1347 /* this is half of the actual "close" */
1348 if (mfd->mfd_mode & FMODE_WRITE) {
1349 rc = mds_put_write_access(mds, inode, request_body,
1350 last_orphan && unlink_orphan);
1351 } else if (mfd->mfd_mode & FMODE_EXEC) {
1352 mds_allow_write_access(inode);
1355 if (last_orphan && unlink_orphan) {
1356 struct lov_mds_md *lmm = NULL;
1357 int stripe_count = 0;
1358 LASSERT(rc == 0); /* mds_put_write_access must have succeeded */
1360 if (obd->obd_recovering) {
1361 CDEBUG(D_HA, "not remove orphan %s until recovery"
1362 " is over\n", idname);
1366 CDEBUG(D_HA, "destroying orphan object %s\n", idname);
1368 if ((S_ISREG(inode->i_mode) && inode->i_nlink != 1) ||
1369 (S_ISDIR(inode->i_mode) && inode->i_nlink != 2))
1370 CERROR("found \"orphan\" %s %s with link count %d\n",
1371 S_ISREG(inode->i_mode) ? "file" : "dir",
1372 idname, inode->i_nlink);
1374 * sadly, there is no easy way to save pending_child from
1375 * mds_reint_unlink() into mfd, so we need to re-lookup, but
1376 * normally it will still be in the dcache.
1378 down(&pending_dir->i_sem);
1379 cleanup_phase = 1; /* up(i_sem) when finished */
1380 pending_child = lookup_one_len(idname, mds->mds_pending_dir,
1382 if (IS_ERR(pending_child))
1383 GOTO(cleanup, rc = PTR_ERR(pending_child));
1384 LASSERT(pending_child->d_inode != NULL);
1386 cleanup_phase = 2; /* dput(pending_child) when finished */
1387 if (S_ISDIR(pending_child->d_inode->i_mode)) {
1388 rc = vfs_rmdir(pending_dir, pending_child);
1390 CERROR("error unlinking orphan dir %s: rc %d\n",
1395 if (req != NULL && req->rq_repmsg != NULL) {
1396 lmm = lustre_msg_buf(req->rq_repmsg, 1, 0);
1397 stripe_count = le32_to_cpu(lmm->lmm_stripe_count);
1400 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK,
1401 NULL, stripe_count);
1402 if (IS_ERR(handle)) {
1403 rc = PTR_ERR(handle);
1408 pending_child->d_fsdata = (void *) &dp;
1411 rc = vfs_unlink(pending_dir, pending_child);
1413 CERROR("error unlinking orphan %s: rc %d\n",
1416 if (req != NULL && req->rq_repmsg != NULL &&
1417 (reply_body->valid & OBD_MD_FLEASIZE) &&
1418 mds_log_op_unlink(obd, pending_child->d_inode,
1419 lmm, req->rq_repmsg->buflens[1],
1420 lustre_msg_buf(req->rq_repmsg, 2, 0),
1421 req->rq_repmsg->buflens[2], &lcl) > 0) {
1422 reply_body->valid |= OBD_MD_FLCOOKIE;
1425 goto out; /* Don't bother updating attrs on unlinked inode */
1429 if (request_body != NULL && mfd->mfd_mode & FMODE_WRITE && rc == 0) {
1430 /* Update the on-disk attributes if this was the last write
1431 * close, and all information was provided (i.e., rc == 0)
1433 * XXX this should probably be abstracted with mds_reint_setattr
1436 if (request_body->valid & OBD_MD_FLMTIME &&
1437 LTIME_S(request_body->mtime) > LTIME_S(inode->i_mtime)) {
1438 LTIME_S(iattr.ia_mtime) = LTIME_S(request_body->mtime);
1439 iattr.ia_valid |= ATTR_MTIME;
1441 if (request_body->valid & OBD_MD_FLCTIME &&
1442 LTIME_S(request_body->ctime) > LTIME_S(inode->i_ctime)) {
1443 LTIME_S(iattr.ia_ctime) = LTIME_S(request_body->ctime);
1444 iattr.ia_valid |= ATTR_CTIME;
1447 /* XXX can't set block count with fsfilt_setattr (!) */
1448 if (request_body->valid & OBD_MD_FLSIZE) {
1449 iattr.ia_valid |= ATTR_SIZE;
1450 iattr.ia_size = request_body->size;
1452 /* if (request_body->valid & OBD_MD_FLBLOCKS) {
1453 iattr.ia_valid |= ATTR_BLOCKS;
1454 iattr.ia_blocks = request_body->blocks
1459 if (request_body != NULL && request_body->valid & OBD_MD_FLATIME) {
1460 /* Only start a transaction to write out only the atime if
1461 * it is more out-of-date than the specified limit. If we
1462 * are already going to write out the atime then do it anyway.
1464 if ((request_body->atime >
1465 LTIME_S(inode->i_atime) + MAX_ATIME_DIFF) ||
1466 (iattr.ia_valid != 0 &&
1467 request_body->atime > LTIME_S(inode->i_atime))) {
1468 LTIME_S(iattr.ia_atime) = request_body->atime;
1469 iattr.ia_valid |= ATTR_ATIME;
1473 if (iattr.ia_valid != 0) {
1474 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
1476 GOTO(cleanup, rc = PTR_ERR(handle));
1477 rc = fsfilt_setattr(obd, mfd->mfd_dentry, handle, &iattr, 0);
1479 CERROR("error in setattr(%s): rc %d\n", idname, rc);
1482 /* If other clients have this file open for write, rc will be > 0 */
1485 l_dput(mfd->mfd_dentry);
1486 mds_mfd_destroy(mfd);
1489 atomic_dec(&mds->mds_open_count);
1490 if (req != NULL && reply_body != NULL) {
1491 rc = mds_finish_transno(mds, pending_dir, handle, req, rc, 0);
1492 } else if (handle) {
1493 int err, force_sync = 0;
1495 if (req && req->rq_export)
1496 force_sync = req->rq_export->exp_sync;
1498 err = fsfilt_commit(obd, mds->mds_sb, pending_dir, handle,
1501 CERROR("error committing close: %d\n", err);
1507 switch (cleanup_phase) {
1510 ptlrpc_save_llog_lock(req, lcl);
1511 dput(pending_child);
1513 up(&pending_dir->i_sem);
1518 int mds_close(struct ptlrpc_request *req, int offset)
1520 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1521 struct obd_device *obd = req->rq_export->exp_obd;
1522 struct mds_body *body;
1523 struct mds_file_data *mfd;
1524 struct lvfs_run_ctxt saved;
1525 struct inode *inode;
1526 int rc, repsize[3] = {sizeof(struct mds_body),
1527 obd->u.mds.mds_max_mdsize,
1528 obd->u.mds.mds_max_cookiesize};
1530 MD_COUNTER_INCREMENT(obd, close);
1532 rc = lustre_pack_reply(req, 3, repsize, NULL);
1534 CERROR("lustre_pack_reply: rc = %d\n", rc);
1535 req->rq_status = rc;
1537 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1540 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
1541 DEBUG_REQ(D_HA, req, "close replay\n");
1542 memcpy(lustre_msg_buf(req->rq_repmsg, 2, 0),
1543 lustre_msg_buf(req->rq_reqmsg, offset + 1, 0),
1544 req->rq_repmsg->buflens[2]);
1547 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1548 lustre_swab_mds_body);
1550 CERROR("Can't unpack body\n");
1551 req->rq_status = -EFAULT;
1555 if (body->flags & MDS_BFLAG_UNCOMMITTED_WRITES)
1556 /* do some stuff */ ;
1558 mfd = mds_handle2mfd(&body->handle);
1560 DEBUG_REQ(D_ERROR, req, "no handle for file close ino "LPD64
1561 ": cookie "LPX64, id_ino(&body->id1), body->handle.cookie);
1562 req->rq_status = -ESTALE;
1566 inode = mfd->mfd_dentry->d_inode;
1567 /* child i_alloc_sem protects orphan_dec_test && is_orphan race */
1568 DOWN_WRITE_I_ALLOC_SEM(inode); /* mds_mfd_close drops this */
1569 if (mds_inode_is_orphan(inode) && mds_orphan_open_count(inode) == 1) {
1570 struct mds_body *rep_body;
1572 rep_body = lustre_msg_buf(req->rq_repmsg, 0,
1573 sizeof (*rep_body));
1574 LASSERT(rep_body != NULL);
1576 mds_pack_inode2body(obd, rep_body, inode,
1577 (body->valid & OBD_MD_FID) ? 1 : 0);
1579 mds_pack_md(obd, req->rq_repmsg, 1, rep_body,
1580 inode, MDS_PACK_MD_LOCK, 0);
1582 spin_lock(&med->med_open_lock);
1583 list_del(&mfd->mfd_list);
1584 spin_unlock(&med->med_open_lock);
1586 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1587 req->rq_status = mds_mfd_close(req, offset, obd, mfd, 1);
1588 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1590 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) {
1591 CERROR("test case OBD_FAIL_MDS_CLOSE_PACK\n");
1592 req->rq_status = -ENOMEM;
1601 int mds_done_writing(struct ptlrpc_request *req, int offset)
1603 struct mds_body *body;
1604 int rc, size = sizeof(struct mds_body);
1607 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1609 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1610 lustre_swab_mds_body);
1612 CERROR("Can't unpack body\n");
1613 req->rq_status = -EFAULT;
1617 rc = lustre_pack_reply(req, 1, &size, NULL);
1619 CERROR("lustre_pack_reply: rc = %d\n", rc);
1620 req->rq_status = rc;