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 the Lustre file system, http://www.lustre.org
11 * Lustre is a trademark of Cluster File Systems, Inc.
13 * You may have signed or agreed to another license before downloading
14 * this software. If so, you are bound by the terms and conditions
15 * of that agreement, and the following does not apply to you. See the
16 * LICENSE file included with this distribution for more information.
18 * If you did not agree to a different license, then this copy of Lustre
19 * is open source software; you can redistribute it and/or modify it
20 * under the terms of version 2 of the GNU General Public License as
21 * published by the Free Software Foundation.
23 * In either case, Lustre is distributed in the hope that it will be
24 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
25 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * license text for more details.
30 # define EXPORT_SYMTAB
32 #define DEBUG_SUBSYSTEM S_MDS
34 #include <linux/version.h>
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/version.h>
38 #include <linux/buffer_head.h>
39 #include <linux/workqueue.h>
41 #include <obd_class.h>
43 #include <lustre_fsfilt.h>
44 #include <lprocfs_status.h>
46 #include "mds_internal.h"
48 /* Exported function from this file are:
50 * mds_open - called by the intent handler
51 * mds_close - an rpc handling function
52 * mds_pin - an rpc handling function - which will go away
53 * mds_mfd_close - for force closing files when a client dies
57 * MDS file data handling: file data holds a handle for a file opened
61 static void mds_mfd_addref(void *mfdp)
63 struct mds_file_data *mfd = mfdp;
65 atomic_inc(&mfd->mfd_refcount);
66 CDEBUG(D_INFO, "GETting mfd %p : new refcount %d\n", mfd,
67 atomic_read(&mfd->mfd_refcount));
70 /* Create a new mds_file_data struct.
71 * One reference for handle+med_open_head list and dropped by mds_mfd_unlink(),
72 * one reference for the caller of this function. */
73 struct mds_file_data *mds_mfd_new(void)
75 struct mds_file_data *mfd;
77 OBD_ALLOC(mfd, sizeof *mfd);
79 CERROR("mds: out of memory\n");
83 atomic_set(&mfd->mfd_refcount, 2);
85 INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
86 INIT_LIST_HEAD(&mfd->mfd_list);
87 class_handle_hash(&mfd->mfd_handle, mds_mfd_addref);
92 /* Get a new reference on the mfd pointed to by handle, if handle is still
93 * valid. Caller must drop reference with mds_mfd_put(). */
94 static struct mds_file_data *mds_handle2mfd(struct lustre_handle *handle)
97 LASSERT(handle != NULL);
98 RETURN(class_handle2object(handle->cookie));
101 /* Drop mfd reference, freeing struct if this is the last one. */
102 static void mds_mfd_put(struct mds_file_data *mfd)
104 CDEBUG(D_INFO, "PUTting mfd %p : new refcount %d\n", mfd,
105 atomic_read(&mfd->mfd_refcount) - 1);
106 LASSERT(atomic_read(&mfd->mfd_refcount) > 0 &&
107 atomic_read(&mfd->mfd_refcount) < 0x5a5a);
108 if (atomic_dec_and_test(&mfd->mfd_refcount)) {
109 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
113 /* Remove the mfd handle so that it cannot be found by open/close again.
114 * Caller must hold med_open_lock for mfd_list manipulation. */
115 void mds_mfd_unlink(struct mds_file_data *mfd, int decref)
117 class_handle_unhash(&mfd->mfd_handle);
118 list_del_init(&mfd->mfd_list);
123 /* Caller must hold mds->mds_epoch_sem */
124 static int mds_alloc_filterdata(struct inode *inode)
126 LASSERT(inode->i_filterdata == NULL);
127 OBD_ALLOC(inode->i_filterdata, sizeof(struct mds_filter_data));
128 if (inode->i_filterdata == NULL)
130 LASSERT(igrab(inode) == inode);
134 /* Caller must hold mds->mds_epoch_sem */
135 static void mds_free_filterdata(struct inode *inode)
137 LASSERT(inode->i_filterdata != NULL);
138 OBD_FREE(inode->i_filterdata, sizeof(struct mds_filter_data));
139 inode->i_filterdata = NULL;
143 /* Write access to a file: executors cause a negative count,
144 * writers a positive count. The semaphore is needed to perform
145 * a check for the sign and then increment or decrement atomically.
147 * This code is closely tied to the allocation of the d_fsdata and the
148 * MDS epoch, so we use the same semaphore for the whole lot.
150 * We could use a different semaphore for each file, if it ever shows
151 * up in a profile, which it won't.
153 * epoch argument is nonzero during recovery */
154 static int mds_get_write_access(struct mds_obd *mds, struct inode *inode,
159 down(&mds->mds_epoch_sem);
161 if (atomic_read(&inode->i_writecount) < 0) {
162 up(&mds->mds_epoch_sem);
167 if (MDS_FILTERDATA(inode) && MDS_FILTERDATA(inode)->io_epoch != 0) {
168 CDEBUG(D_INODE, "continuing MDS epoch "LPU64" for ino %lu/%u\n",
169 MDS_FILTERDATA(inode)->io_epoch, inode->i_ino,
170 inode->i_generation);
174 if (inode->i_filterdata == NULL)
175 mds_alloc_filterdata(inode);
176 if (inode->i_filterdata == NULL) {
180 if (epoch > mds->mds_io_epoch)
181 mds->mds_io_epoch = epoch;
184 MDS_FILTERDATA(inode)->io_epoch = mds->mds_io_epoch;
185 CDEBUG(D_INODE, "starting MDS epoch "LPU64" for ino %lu/%u\n",
186 mds->mds_io_epoch, inode->i_ino, inode->i_generation);
189 atomic_inc(&inode->i_writecount);
190 up(&mds->mds_epoch_sem);
194 /* Returns EAGAIN if the client needs to get size and/or cookies and close
195 * again -- which is never true if the file is about to be unlinked. Otherwise
196 * returns the number of remaining writers. */
197 static int mds_put_write_access(struct mds_obd *mds, struct inode *inode,
198 struct mds_body *body, int unlinking)
203 down(&mds->mds_epoch_sem);
204 atomic_dec(&inode->i_writecount);
205 rc = atomic_read(&inode->i_writecount);
209 if (!unlinking && !(body->valid & OBD_MD_FLSIZE))
210 GOTO(out, rc = EAGAIN);
212 mds_free_filterdata(inode);
214 up(&mds->mds_epoch_sem);
218 static int mds_deny_write_access(struct mds_obd *mds, struct inode *inode)
221 down(&mds->mds_epoch_sem);
222 if (atomic_read(&inode->i_writecount) > 0) {
223 up(&mds->mds_epoch_sem);
226 atomic_dec(&inode->i_writecount);
227 up(&mds->mds_epoch_sem);
231 static void mds_allow_write_access(struct inode *inode)
234 atomic_inc(&inode->i_writecount);
237 int mds_query_write_access(struct inode *inode)
240 RETURN(atomic_read(&inode->i_writecount));
243 /* This replaces the VFS dentry_open, it manages mfd and writecount */
244 static struct mds_file_data *mds_dentry_open(struct dentry *dentry,
245 struct vfsmount *mnt, int flags,
246 struct ptlrpc_request *req)
248 struct mds_export_data *med = &req->rq_export->exp_mds_data;
249 struct mds_obd *mds = mds_req2mds(req);
250 struct mds_file_data *mfd;
251 struct mds_body *body;
257 CERROR("mds: out of memory\n");
258 GOTO(cleanup_dentry, error = -ENOMEM);
261 body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF, sizeof(*body));
263 if (flags & FMODE_WRITE) {
264 /* FIXME: in recovery, need to pass old epoch here */
265 error = mds_get_write_access(mds, dentry->d_inode, 0);
267 GOTO(cleanup_mfd, error);
268 body->io_epoch = MDS_FILTERDATA(dentry->d_inode)->io_epoch;
269 } else if (flags & MDS_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. */
278 MDS_DOWN_WRITE_ORPHAN_SEM(dentry->d_inode);
279 mds_orphan_open_inc(dentry->d_inode);
280 MDS_UP_WRITE_ORPHAN_SEM(dentry->d_inode);
282 mfd->mfd_mode = flags;
283 mfd->mfd_dentry = dentry;
284 mfd->mfd_xid = req->rq_xid;
286 spin_lock(&med->med_open_lock);
287 list_add(&mfd->mfd_list, &med->med_open_head);
288 spin_unlock(&med->med_open_lock);
290 body->handle.cookie = mfd->mfd_handle.h_cookie;
296 mds_mfd_unlink(mfd, 1);
298 return ERR_PTR(error);
301 /* Must be called with i_mutex held */
302 static int mds_create_objects(struct ptlrpc_request *req, int offset,
303 struct mds_update_record *rec,
304 struct mds_obd *mds, struct obd_device *obd,
305 struct dentry *dchild, void **handle,
308 struct inode *inode = dchild->d_inode;
309 struct obd_trans_info oti = { 0 };
310 struct lov_mds_md *lmm = NULL;
312 struct mds_body *body;
313 struct obd_info oinfo = { { { 0 } } };
317 if (!S_ISREG(inode->i_mode))
319 if (!md_should_create(rec->ur_flags))
322 body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF, sizeof(*body));
324 if (body->valid & OBD_MD_FLEASIZE)
327 OBD_ALLOC(*ids, mds->mds_lov_desc.ld_tgt_count * sizeof(**ids));
331 oti.oti_objid = *ids;
334 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
335 if (rec->ur_fid2->id == 0) {
336 DEBUG_REQ(D_ERROR, req, "fid2 not set on open replay");
340 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
341 lmm_size = rec->ur_eadatalen;
342 lmm = rec->ur_eadata;
346 *handle = fsfilt_start(obd,inode,FSFILT_OP_CREATE,NULL);
347 if (IS_ERR(*handle)) {
348 rc = PTR_ERR(*handle);
353 mds_objids_from_lmm(*ids, lmm, &mds->mds_lov_desc);
355 rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size, "lov");
357 CERROR("open replay failed to set md:%d\n", rc);
358 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, lmm_size);
360 memcpy(lmm_buf, lmm, lmm_size);
365 if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_ALLOC_OBDO))
366 GOTO(out_ids, rc = -ENOMEM);
368 OBDO_ALLOC(oinfo.oi_oa);
369 if (oinfo.oi_oa == NULL)
370 GOTO(out_ids, rc = -ENOMEM);
371 oinfo.oi_oa->o_uid = 0; /* must have 0 uid / gid on OST */
372 oinfo.oi_oa->o_gid = 0;
373 oinfo.oi_oa->o_mode = S_IFREG | 0600;
374 oinfo.oi_oa->o_id = inode->i_ino;
375 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLFLAGS |
376 OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID;
377 oinfo.oi_oa->o_size = 0;
379 obdo_from_inode(oinfo.oi_oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
380 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
382 if (!(rec->ur_flags & MDS_OPEN_HAS_OBJS)) {
383 /* check if things like lfs setstripe are sending us the ea */
384 if (rec->ur_flags & MDS_OPEN_HAS_EA) {
385 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
387 0, &oinfo.oi_md, rec->ur_eadata);
391 OBD_ALLOC(lmm, mds->mds_max_mdsize);
393 GOTO(out_oa, rc = -ENOMEM);
395 lmm_size = mds->mds_max_mdsize;
396 rc = mds_get_md(obd, dchild->d_parent->d_inode,
399 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
401 0, &oinfo.oi_md, lmm);
402 OBD_FREE(lmm, mds->mds_max_mdsize);
406 rc = obd_create(mds->mds_osc_exp, oinfo.oi_oa,
412 CDEBUG(level, "error creating objects for "
413 "inode %lu: rc = %d\n",
416 CERROR("obd_create returned invalid "
423 rc = obd_iocontrol(OBD_IOC_LOV_SETEA, mds->mds_osc_exp,
424 0, &oinfo.oi_md, rec->ur_eadata);
428 oinfo.oi_md->lsm_object_id = oinfo.oi_oa->o_id;
429 oinfo.oi_md->lsm_object_gr = oinfo.oi_oa->o_gr;
431 if (i_size_read(inode)) {
432 oinfo.oi_oa->o_size = i_size_read(inode);
433 obdo_from_inode(oinfo.oi_oa, inode, OBD_MD_FLTYPE |
434 OBD_MD_FLATIME | OBD_MD_FLMTIME |
435 OBD_MD_FLCTIME | OBD_MD_FLSIZE);
437 /* pack lustre id to OST */
438 oinfo.oi_oa->o_fid = body->fid1.id;
439 oinfo.oi_oa->o_generation = body->fid1.generation;
440 oinfo.oi_oa->o_valid |= OBD_MD_FLFID | OBD_MD_FLGENER;
442 rc = obd_setattr_rqset(mds->mds_osc_exp, &oinfo, &oti);
444 CERROR("error setting attrs for inode %lu: rc %d\n",
447 CERROR("obd_setattr_async returned bad rc %d\n",
455 body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
456 obdo_refresh_inode(inode, oinfo.oi_oa, OBD_MD_FLBLKSZ);
458 LASSERT(oinfo.oi_md && oinfo.oi_md->lsm_object_id);
460 rc = obd_packmd(mds->mds_osc_exp, &lmm, oinfo.oi_md);
462 CERROR("cannot pack lsm, err = %d\n", rc);
466 body->eadatasize = rc;
469 *handle = fsfilt_start(obd, inode, FSFILT_OP_CREATE, NULL);
470 if (IS_ERR(*handle)) {
471 rc = PTR_ERR(*handle);
473 GOTO(free_diskmd, rc);
476 rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size, "lov");
477 lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, lmm_size);
479 memcpy(lmm_buf, lmm, lmm_size);
481 obd_free_diskmd(mds->mds_osc_exp, &lmm);
483 oti_free_cookies(&oti);
484 OBDO_FREE(oinfo.oi_oa);
487 OBD_FREE(*ids, mds->mds_lov_desc.ld_tgt_count * sizeof(**ids));
491 obd_free_memmd(mds->mds_osc_exp, &oinfo.oi_md);
495 static void reconstruct_open(struct mds_update_record *rec, int offset,
496 struct ptlrpc_request *req,
497 struct lustre_handle *child_lockh)
499 struct mds_export_data *med = &req->rq_export->exp_mds_data;
500 struct mds_client_data *mcd = med->med_mcd;
501 struct mds_obd *mds = mds_req2mds(req);
502 struct mds_file_data *mfd;
503 struct obd_device *obd = req->rq_export->exp_obd;
504 struct dentry *parent, *dchild;
505 struct ldlm_reply *rep;
506 struct mds_body *body;
512 LASSERT(offset == DLM_INTENT_REC_OFF); /* only called via intent */
513 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF, sizeof(*rep));
514 body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF, sizeof(*body));
516 /* copy rc, transno and disp; steal locks */
517 mds_req_from_mcd(req, mcd);
518 intent_set_disposition(rep, le32_to_cpu(mcd->mcd_last_data));
520 /* Only replay if create or open actually happened. */
521 if (!intent_disposition(rep, DISP_OPEN_CREATE | DISP_OPEN_OPEN) ) {
523 return; /* error looking up parent or child */
526 parent = mds_fid2dentry(mds, rec->ur_fid1, NULL);
527 LASSERT(!IS_ERR(parent));
529 dchild = ll_lookup_one_len(rec->ur_name, parent, rec->ur_namelen - 1);
530 LASSERT(!IS_ERR(dchild));
532 if (!dchild->d_inode)
533 GOTO(out_dput, 0); /* child not present to open */
535 /* At this point, we know we have a child. We'll send
536 * it back _unless_ it not created and open failed.
538 if (intent_disposition(rep, DISP_OPEN_OPEN) &&
539 !intent_disposition(rep, DISP_OPEN_CREATE) &&
544 mds_pack_inode2fid(&body->fid1, dchild->d_inode);
545 mds_pack_inode2body(body, dchild->d_inode);
546 if (S_ISREG(dchild->d_inode->i_mode)) {
547 rc = mds_pack_md(obd, req->rq_repmsg, DLM_REPLY_REC_OFF + 1,
548 body, dchild->d_inode, 1);
551 LASSERT(rc == req->rq_status);
553 /* If we have LOV EA data, the OST holds size, mtime */
554 if (!(body->valid & OBD_MD_FLEASIZE))
555 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
556 OBD_MD_FLATIME | OBD_MD_FLMTIME);
559 if (!(rec->ur_flags & MDS_OPEN_JOIN_FILE))
560 lustre_shrink_reply(req, DLM_REPLY_REC_OFF + 1,
561 body->eadatasize, 0);
563 if (req->rq_export->exp_connect_flags & OBD_CONNECT_ACL &&
564 !(rec->ur_flags & MDS_OPEN_JOIN_FILE)) {
565 int acl_off = DLM_REPLY_REC_OFF + (body->eadatasize ? 2 : 1);
567 rc = mds_pack_acl(med, dchild->d_inode, req->rq_repmsg,
569 lustre_shrink_reply(req, acl_off, body->aclsize, 0);
570 if (!req->rq_status && rc)
574 /* If we have -EEXIST as the status, and we were asked to create
575 * exclusively, we can tell we failed because the file already existed.
577 if (req->rq_status == -EEXIST &&
578 ((rec->ur_flags & (MDS_OPEN_CREAT | MDS_OPEN_EXCL)) ==
579 (MDS_OPEN_CREAT | MDS_OPEN_EXCL))) {
583 /* If we didn't get as far as trying to open, then some locking thing
584 * probably went wrong, and we'll just bail here.
586 if (!intent_disposition(rep, DISP_OPEN_OPEN))
589 /* If we failed, then we must have failed opening, so don't look for
590 * file descriptor or anything, just give the client the bad news.
596 spin_lock(&med->med_open_lock);
597 list_for_each(t, &med->med_open_head) {
598 mfd = list_entry(t, struct mds_file_data, mfd_list);
599 if (mfd->mfd_xid == req->rq_xid) {
605 spin_unlock(&med->med_open_lock);
607 /* #warning "XXX fixme" bug 2991 */
608 /* Here it used to LASSERT(mfd) if exp_outstanding_reply != NULL.
609 * Now that exp_outstanding_reply is a list, it's just using mfd != NULL
610 * to detect a re-open */
612 if (rec->ur_flags & MDS_OPEN_JOIN_FILE) {
613 rc = mds_join_file(rec, req, dchild, NULL);
617 mntget(mds->mds_vfsmnt);
618 CERROR("Re-opened file \n");
619 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt,
620 rec->ur_flags & ~MDS_OPEN_TRUNC, req);
622 CERROR("mds: out of memory\n");
623 GOTO(out_dput, req->rq_status = -ENOMEM);
627 body->handle.cookie = mfd->mfd_handle.h_cookie;
628 CDEBUG(D_INODE, "resend mfd %p, cookie "LPX64"\n", mfd,
629 mfd->mfd_handle.h_cookie);
641 /* do NOT or the MAY_*'s, you'll get the weakest */
642 static int accmode(struct inode *inode, int flags)
646 /* Sadly, NFSD reopens a file repeatedly during operation, so the
647 * "acc_mode = 0" allowance for newly-created files isn't honoured.
648 * NFSD uses the MDS_OPEN_OWNEROVERRIDE flag to say that a file
649 * owner can write to a file even if it is marked readonly to hide
650 * its brokenness. (bug 5781) */
651 if (flags & MDS_OPEN_OWNEROVERRIDE && inode->i_uid == current->fsuid)
654 if (flags & FMODE_READ)
656 if (flags & (FMODE_WRITE|MDS_OPEN_TRUNC))
658 if (flags & MDS_FMODE_EXEC)
663 /* Handles object creation, actual opening, and I/O epoch */
664 static int mds_finish_open(struct ptlrpc_request *req, struct dentry *dchild,
665 struct mds_body *body, int flags, void **handle,
666 struct mds_update_record *rec,struct ldlm_reply *rep,
667 struct lustre_handle *lockh)
669 struct mds_obd *mds = mds_req2mds(req);
670 struct obd_device *obd = req->rq_export->exp_obd;
671 struct mds_file_data *mfd = NULL;
672 obd_id *ids = NULL; /* object IDs created */
676 /* atomically create objects if necessary */
677 LOCK_INODE_MUTEX(dchild->d_inode);
679 if (S_ISREG(dchild->d_inode->i_mode) &&
680 !(body->valid & OBD_MD_FLEASIZE)) {
681 rc = mds_pack_md(obd, req->rq_repmsg, DLM_REPLY_REC_OFF + 1,
682 body, dchild->d_inode, 0);
684 UNLOCK_INODE_MUTEX(dchild->d_inode);
689 if ((body->valid & OBD_MD_FLEASIZE) &&
690 (rec->ur_flags & MDS_OPEN_HAS_EA)) {
691 UNLOCK_INODE_MUTEX(dchild->d_inode);
694 if (rec->ur_flags & MDS_OPEN_JOIN_FILE) {
695 UNLOCK_INODE_MUTEX(dchild->d_inode);
696 rc = mds_join_file(rec, req, dchild, lockh);
699 LOCK_INODE_MUTEX(dchild->d_inode);
701 if (!(body->valid & OBD_MD_FLEASIZE) &&
702 !(body->valid & OBD_MD_FLMODEASIZE)) {
703 /* no EA: create objects */
704 rc = mds_create_objects(req, DLM_REPLY_REC_OFF + 1, rec,
705 mds, obd, dchild, handle, &ids);
707 CERROR("mds_create_objects: rc = %d\n", rc);
708 UNLOCK_INODE_MUTEX(dchild->d_inode);
713 /* If the inode has no EA data, then MDS holds size, mtime */
714 if (S_ISREG(dchild->d_inode->i_mode) &&
715 !(body->valid & OBD_MD_FLEASIZE)) {
716 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
717 OBD_MD_FLATIME | OBD_MD_FLMTIME);
719 UNLOCK_INODE_MUTEX(dchild->d_inode);
721 if (rec && !(rec->ur_flags & MDS_OPEN_JOIN_FILE))
722 lustre_shrink_reply(req, DLM_REPLY_REC_OFF + 1,
723 body->eadatasize, 0);
725 if (req->rq_export->exp_connect_flags & OBD_CONNECT_ACL &&
726 rec && !(rec->ur_flags & MDS_OPEN_JOIN_FILE)) {
727 int acl_off = DLM_REPLY_REC_OFF + (body->eadatasize ? 2 : 1);
729 rc = mds_pack_acl(&req->rq_export->exp_mds_data,
730 dchild->d_inode, req->rq_repmsg,
732 lustre_shrink_reply(req, acl_off, body->aclsize, 0);
737 intent_set_disposition(rep, DISP_OPEN_OPEN);
738 mfd = mds_dentry_open(dchild, mds->mds_vfsmnt, flags, req);
740 RETURN(PTR_ERR(mfd));
742 CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
743 mfd->mfd_handle.h_cookie);
746 mds_lov_update_objids(obd, ids);
747 OBD_FREE(ids, sizeof(*ids) * mds->mds_lov_desc.ld_tgt_count);
749 if (rc) /* coverity[deadcode] */
750 mds_mfd_unlink(mfd, 1);
756 static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
757 struct mds_body *body, int flags,
758 struct mds_update_record *rec,struct ldlm_reply *rep)
760 struct mds_obd *mds = mds_req2mds(req);
761 struct dentry *dchild;
762 char fidname[LL_FID_NAMELEN];
767 fidlen = ll_fid2str(fidname, fid->id, fid->generation);
768 dchild = ll_lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
769 if (IS_ERR(dchild)) {
770 rc = PTR_ERR(dchild);
771 CERROR("error looking up %s in PENDING: rc = %d\n",fidname, rc);
775 if (dchild->d_inode != NULL) {
776 mds_inode_set_orphan(dchild->d_inode);
777 CWARN("Orphan %s found and opened in PENDING directory\n",
782 /* We didn't find it in PENDING so it isn't an orphan. See
783 * if it was a regular inode that was previously created. */
784 dchild = mds_fid2dentry(mds, fid, NULL);
786 RETURN(PTR_ERR(dchild));
789 mds_pack_inode2fid(&body->fid1, dchild->d_inode);
790 mds_pack_inode2body(body, dchild->d_inode);
791 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
792 intent_set_disposition(rep, DISP_LOOKUP_POS);
794 rc = mds_finish_open(req, dchild, body, flags, &handle, rec, rep, NULL);
795 rc = mds_finish_transno(mds, dchild->d_inode, handle,
796 req, rc, rep ? rep->lock_policy_res1 : 0, 0);
797 /* XXX what do we do here if mds_finish_transno itself failed? */
803 int mds_pin(struct ptlrpc_request *req, int offset)
805 struct obd_device *obd = req->rq_export->exp_obd;
806 struct mds_body *reqbody, *repbody;
807 struct lvfs_run_ctxt saved;
808 int rc, size[2] = { sizeof(struct ptlrpc_body), sizeof(*repbody) };
811 reqbody = lustre_msg_buf(req->rq_reqmsg, offset, sizeof(*reqbody));
813 rc = lustre_pack_reply(req, 2, size, NULL);
816 repbody = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
819 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
820 rc = mds_open_by_fid(req, &reqbody->fid1, repbody, reqbody->flags, NULL,
822 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
827 /* Get an internal lock on the inode number (but not generation) to sync
828 * new inode creation with inode unlink (bug 2029). If child_lockh is NULL
829 * we just get the lock as a barrier to wait for other holders of this lock,
830 * and drop it right away again. */
831 int mds_lock_new_child(struct obd_device *obd, struct inode *inode,
832 struct lustre_handle *child_lockh)
834 struct ldlm_res_id child_res_id = { .name = { inode->i_ino, 0, 1, 0 } };
835 struct lustre_handle lockh;
836 int lock_flags = LDLM_FL_ATOMIC_CB;
839 if (child_lockh == NULL)
840 child_lockh = &lockh;
842 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &child_res_id,
843 LDLM_PLAIN, NULL, LCK_EX, &lock_flags,
844 ldlm_blocking_ast, ldlm_completion_ast,
845 NULL, NULL, 0, NULL, child_lockh);
847 CERROR("ldlm_cli_enqueue_local: %d\n", rc);
848 else if (child_lockh == &lockh)
849 ldlm_lock_decref(child_lockh, LCK_EX);
854 int mds_open(struct mds_update_record *rec, int offset,
855 struct ptlrpc_request *req, struct lustre_handle *child_lockh)
857 /* XXX ALLOCATE _something_ - 464 bytes on stack here */
858 struct obd_device *obd = req->rq_export->exp_obd;
859 struct mds_obd *mds = mds_req2mds(req);
860 struct ldlm_reply *rep = NULL;
861 struct mds_body *body = NULL;
862 struct dentry *dchild = NULL, *dparent = NULL;
863 struct mds_export_data *med;
864 struct lustre_handle parent_lockh;
865 int rc = 0, cleanup_phase = 0, acc_mode, created = 0;
866 int parent_mode = LCK_CR;
868 struct lvfs_dentry_params dp = LVFS_DENTRY_PARAMS_INIT;
869 unsigned int qcids[MAXQUOTAS] = { current->fsuid, current->fsgid };
870 unsigned int qpids[MAXQUOTAS] = { 0, 0 };
871 int child_mode = LCK_CR;
872 /* Always returning LOOKUP lock if open succesful to guard
874 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_LOOKUP}};
875 struct ldlm_res_id child_res_id = { .name = {0}};
879 mds_counter_incr(req->rq_export, LPROC_MDS_OPEN);
881 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_PAUSE_OPEN | OBD_FAIL_ONCE,
882 (obd_timeout + 1) / 4);
884 CLASSERT(MAXQUOTAS < 4);
885 if (offset == DLM_INTENT_REC_OFF) { /* intent */
886 rep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
888 body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
890 } else if (offset == REQ_REC_OFF) { /* non-intent reint */
891 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
893 LBUG(); /* XXX: not supported yet? */
899 MDS_CHECK_RESENT(req, reconstruct_open(rec, offset, req, child_lockh));
901 /* Step 0: If we are passed a fid, then we assume the client already
902 * opened this file and is only replaying the RPC, so we open the
903 * inode by fid (at some large expense in security). */
904 /*XXX liblustre use mds_open_by_fid to implement LL_IOC_LOV_SETSTRIPE */
905 if (((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) ||
906 (req->rq_export->exp_libclient && rec->ur_flags&MDS_OPEN_HAS_EA))&&
907 !(rec->ur_flags & MDS_OPEN_JOIN_FILE)) {
908 if (rec->ur_fid2->id == 0) {
909 struct ldlm_lock *lock = ldlm_handle2lock(child_lockh);
911 LDLM_ERROR(lock, "fid2 not set on open replay");
914 DEBUG_REQ(D_ERROR, req, "fid2 not set on open replay");
918 rc = mds_open_by_fid(req, rec->ur_fid2, body, rec->ur_flags,
921 if (req->rq_export->exp_libclient &&
922 rec->ur_flags & MDS_OPEN_HAS_EA)
928 /* We didn't find the correct inode on disk either, so we
929 * need to re-create it via a regular replay. */
930 if (!(rec->ur_flags & MDS_OPEN_CREAT)) {
931 DEBUG_REQ(D_ERROR, req,"OPEN_CREAT not in open replay");
934 } else if (rec->ur_fid2->id) {
935 DEBUG_REQ(D_ERROR, req, "fid2 "LPU64"/%u on open non-replay",
936 rec->ur_fid2->id, rec->ur_fid2->generation);
940 /* If we got here, we must be called via intent */
941 LASSERT(offset == DLM_INTENT_REC_OFF);
943 med = &req->rq_export->exp_mds_data;
944 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) {
945 CERROR("test case OBD_FAIL_MDS_OPEN_PACK\n");
949 /* Step 1: Find and lock the parent */
950 if (rec->ur_flags & (MDS_OPEN_CREAT | MDS_OPEN_JOIN_FILE))
951 parent_mode = LCK_EX;
952 dparent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, parent_mode,
953 &parent_lockh, MDS_INODELOCK_UPDATE);
954 if (IS_ERR(dparent)) {
955 rc = PTR_ERR(dparent);
957 CERROR("parent "LPU64"/%u lookup error %d\n",
958 rec->ur_fid1->id, rec->ur_fid1->generation, rc);
960 /* Just cannot find parent - make it look like
961 * usual negative lookup to avoid extra MDS RPC */
962 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
963 intent_set_disposition(rep, DISP_LOOKUP_NEG);
967 LASSERT(dparent->d_inode != NULL);
969 cleanup_phase = 1; /* parent dentry and lock */
971 if (rec->ur_flags & MDS_OPEN_JOIN_FILE) {
972 dchild = dget(dparent);
973 cleanup_phase = 2; /* child dentry */
974 acc_mode = accmode(dchild->d_inode, rec->ur_flags);
975 GOTO(found_child, rc);
978 /* Step 2: Lookup the child */
980 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
981 (rec->ur_flags & MDS_OPEN_LOCK) && (rec->ur_namelen == 1)) {
982 /* hack for nfsd with no_subtree_check, it will use anon
983 * dentry w/o filename to open the file. the anon dentry's
984 * parent was set to itself, so rec->ur_fid1 is the file.
985 * And in MDC it cannot derive the dentry's parent dentry,
986 * hence the file's name, so we hack here in MDS,
987 * refer to bug 13030. */
988 dchild = mds_fid2dentry(mds, rec->ur_fid1, NULL);
990 dchild = ll_lookup_one_len(rec->ur_name, dparent,
991 rec->ur_namelen - 1);
993 if (IS_ERR(dchild)) {
994 rc = PTR_ERR(dchild);
995 dchild = NULL; /* don't confuse mds_finish_transno() below */
999 cleanup_phase = 2; /* child dentry */
1001 intent_set_disposition(rep, DISP_LOOKUP_EXECD);
1002 if (dchild->d_inode)
1003 intent_set_disposition(rep, DISP_LOOKUP_POS);
1005 intent_set_disposition(rep, DISP_LOOKUP_NEG);
1007 /*Step 3: If the child was negative, and we're supposed to, create it.*/
1008 if (dchild->d_inode == NULL) {
1009 unsigned long ino = rec->ur_fid2->id;
1011 struct inode *inode;
1013 if (!(rec->ur_flags & MDS_OPEN_CREAT)) {
1014 /* It's negative and we weren't supposed to create it */
1015 GOTO(cleanup, rc = -ENOENT);
1018 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
1019 GOTO(cleanup, rc = -EROFS);
1021 intent_set_disposition(rep, DISP_OPEN_CREATE);
1022 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_CREATE,
1024 if (IS_ERR(handle)) {
1025 rc = PTR_ERR(handle);
1029 dchild->d_fsdata = (void *) &dp;
1033 rc = ll_vfs_create(dparent->d_inode, dchild, rec->ur_mode,NULL);
1034 if (dchild->d_fsdata == (void *)(unsigned long)ino)
1035 dchild->d_fsdata = NULL;
1038 CDEBUG(D_INODE, "error during create: %d\n", rc);
1041 inode = dchild->d_inode;
1043 LASSERT(ino == inode->i_ino);
1044 /* Written as part of setattr */
1045 inode->i_generation = rec->ur_fid2->generation;
1046 CDEBUG(D_HA, "recreated ino %lu with gen %u\n",
1047 inode->i_ino, inode->i_generation);
1051 LTIME_S(iattr.ia_atime) = rec->ur_time;
1052 LTIME_S(iattr.ia_ctime) = rec->ur_time;
1053 LTIME_S(iattr.ia_mtime) = rec->ur_time;
1055 iattr.ia_uid = current->fsuid; /* set by push_ctxt already */
1056 if (dparent->d_inode->i_mode & S_ISGID)
1057 iattr.ia_gid = dparent->d_inode->i_gid;
1059 iattr.ia_gid = current->fsgid;
1061 iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
1062 ATTR_MTIME | ATTR_CTIME;
1064 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
1066 CERROR("error on child setattr: rc = %d\n", rc);
1068 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
1070 rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
1072 CERROR("error on parent setattr: rc = %d\n", rc);
1074 rc = fsfilt_commit(obd, dchild->d_inode, handle, 0);
1076 acc_mode = 0; /* Don't check for permissions */
1078 acc_mode = accmode(dchild->d_inode, rec->ur_flags);
1081 LASSERTF(!mds_inode_is_orphan(dchild->d_inode),
1082 "dchild %.*s (%p) inode %p/%lu/%u\n", dchild->d_name.len,
1083 dchild->d_name.name, dchild, dchild->d_inode,
1084 dchild->d_inode->i_ino, dchild->d_inode->i_generation);
1087 mds_pack_inode2fid(&body->fid1, dchild->d_inode);
1088 mds_pack_inode2body(body, dchild->d_inode);
1090 if (S_ISREG(dchild->d_inode->i_mode)) {
1091 /* Check permissions etc */
1092 rc = ll_permission(dchild->d_inode, acc_mode, NULL);
1096 if ((req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY) &&
1097 (acc_mode & MAY_WRITE))
1098 GOTO(cleanup, rc = -EROFS);
1100 /* An append-only file must be opened in append mode for
1102 if (IS_APPEND(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0 &&
1103 ((rec->ur_flags & MDS_OPEN_APPEND) == 0 ||
1104 (rec->ur_flags & MDS_OPEN_TRUNC) != 0))
1105 GOTO(cleanup, rc = -EPERM);
1108 if (!created && (rec->ur_flags & MDS_OPEN_CREAT) &&
1109 (rec->ur_flags & MDS_OPEN_EXCL)) {
1110 /* File already exists, we didn't just create it, and we
1111 * were passed O_EXCL; err-or. */
1112 GOTO(cleanup, rc = -EEXIST); // returns a lock to the client
1115 /* if we are following a symlink, don't open */
1116 if (S_ISLNK(dchild->d_inode->i_mode))
1117 GOTO(cleanup_no_trans, rc = 0);
1119 if (S_ISDIR(dchild->d_inode->i_mode)) {
1120 if (rec->ur_flags & MDS_OPEN_CREAT ||
1121 rec->ur_flags & FMODE_WRITE) {
1122 /* we are trying to create or write a exist dir */
1123 GOTO(cleanup, rc = -EISDIR);
1125 if (rec->ur_flags & MDS_FMODE_EXEC) {
1126 /* we are trying to exec a directory */
1127 GOTO(cleanup, rc = -EACCES);
1129 if (ll_permission(dchild->d_inode, acc_mode, NULL)) {
1130 intent_set_disposition(rep, DISP_OPEN_OPEN);
1131 GOTO(cleanup, rc = -EACCES);
1133 } else if (rec->ur_flags & MDS_OPEN_DIRECTORY) {
1134 GOTO(cleanup, rc = -ENOTDIR);
1137 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_CREATE)) {
1138 obd_fail_loc = OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE;
1139 GOTO(cleanup, rc = -EAGAIN);
1142 /* Obtain OPEN lock as well */
1143 policy.l_inodebits.bits |= MDS_INODELOCK_OPEN;
1145 /* We cannot use acc_mode here, because it is zeroed in case of
1146 creating a file, so we get wrong lockmode */
1147 if (accmode(dchild->d_inode, rec->ur_flags) & MAY_WRITE)
1148 child_mode = LCK_CW;
1149 else if (accmode(dchild->d_inode, rec->ur_flags) & MAY_EXEC)
1150 child_mode = LCK_PR;
1152 child_mode = LCK_CR;
1154 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1155 (rec->ur_flags & MDS_OPEN_LOCK)) {
1156 /* In case of replay we do not get a lock assuming that the
1157 caller has it already */
1158 child_res_id.name[0] = dchild->d_inode->i_ino;
1159 child_res_id.name[1] = dchild->d_inode->i_generation;
1161 rc = ldlm_cli_enqueue_local(obd->obd_namespace, &child_res_id,
1162 LDLM_IBITS, &policy, child_mode,
1163 &lock_flags, ldlm_blocking_ast,
1164 ldlm_completion_ast, NULL, NULL,
1165 0, NULL, child_lockh);
1169 /* Let mds_intent_policy know that we have a lock to return */
1170 intent_set_disposition(rep, DISP_OPEN_LOCK);
1174 if (!S_ISREG(dchild->d_inode->i_mode) &&
1175 !S_ISDIR(dchild->d_inode->i_mode) &&
1176 (req->rq_export->exp_connect_flags & OBD_CONNECT_NODEVOH)) {
1177 /* If client supports this, do not return open handle for
1178 * special device nodes */
1179 GOTO(cleanup_no_trans, rc = 0);
1182 /* Step 5: mds_open it */
1183 rc = mds_finish_open(req, dchild, body, rec->ur_flags, &handle, rec,
1184 rep, &parent_lockh);
1188 rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
1189 req, rc, rep ? rep->lock_policy_res1 : 0, 0);
1192 switch (cleanup_phase) {
1195 /* It is safe to leave IT_OPEN_LOCK set, if rc is not 0,
1196 * mds_intent_policy won't try to return any locks */
1197 ldlm_lock_decref(child_lockh, child_mode);
1199 if (rc && created) {
1200 int err = vfs_unlink(dparent->d_inode, dchild);
1202 CERROR("unlink(%.*s) in error path: %d\n",
1203 dchild->d_name.len, dchild->d_name.name,
1206 } else if (created) {
1207 mds_lock_new_child(obd, dchild->d_inode, NULL);
1208 /* save uid/gid for quota acquire/release */
1209 qpids[USRQUOTA] = dparent->d_inode->i_uid;
1210 qpids[GRPQUOTA] = dparent->d_inode->i_gid;
1214 if (dparent == NULL)
1219 ldlm_lock_decref(&parent_lockh, parent_mode);
1221 ptlrpc_save_lock(req, &parent_lockh, parent_mode);
1223 /* trigger dqacq on the owner of child and parent */
1224 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
1227 /* If we have not taken the "open" lock, we may not return 0 here,
1228 because caller expects 0 to mean "lock is taken", and it needs
1229 nonzero return here for caller to return EDLM_LOCK_ABORTED to
1230 client. Later caller should rewrite the return value back to zero
1231 if it to be used any further
1236 /* Close a "file descriptor" and possibly unlink an orphan from the
1237 * PENDING directory. Caller must hold child->i_mutex, this drops it.
1239 * If we are being called from mds_disconnect() because the client has
1240 * disappeared, then req == NULL and we do not update last_rcvd because
1241 * there is nothing that could be recovered by the client at this stage
1242 * (it will not even _have_ an entry in last_rcvd anymore).
1244 * Returns EAGAIN if the client needs to get more data and re-close. */
1245 int mds_mfd_close(struct ptlrpc_request *req, int offset,struct obd_device *obd,
1246 struct mds_file_data *mfd, int unlink_orphan,
1247 struct lov_mds_md *lmm, int lmm_size,
1248 struct llog_cookie *logcookies, int cookies_size,
1251 struct inode *inode = mfd->mfd_dentry->d_inode;
1252 char fidname[LL_FID_NAMELEN];
1253 int last_orphan, fidlen, rc = 0, cleanup_phase = 0;
1254 struct dentry *pending_child = NULL;
1255 struct mds_obd *mds = &obd->u.mds;
1256 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
1257 void *handle = NULL;
1258 struct mds_body *request_body = NULL, *reply_body = NULL;
1259 struct lvfs_dentry_params dp = LVFS_DENTRY_PARAMS_INIT;
1260 struct iattr iattr = { 0 };
1263 if (req && req->rq_reqmsg != NULL)
1264 request_body = lustre_msg_buf(req->rq_reqmsg, offset,
1265 sizeof(*request_body));
1266 if (req && req->rq_repmsg != NULL)
1267 reply_body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1268 sizeof(*reply_body));
1270 fidlen = ll_fid2str(fidname, inode->i_ino, inode->i_generation);
1272 CDEBUG(D_INODE, "inode %p ino %s nlink %d orphan %d\n", inode, fidname,
1273 inode->i_nlink, mds_orphan_open_count(inode));
1275 last_orphan = mds_orphan_open_dec_test(inode) &&
1276 mds_inode_is_orphan(inode);
1277 MDS_UP_WRITE_ORPHAN_SEM(inode);
1279 /* this is half of the actual "close" */
1280 if (mfd->mfd_mode & FMODE_WRITE) {
1281 rc = mds_put_write_access(mds, inode, request_body,
1282 last_orphan && unlink_orphan);
1283 } else if (mfd->mfd_mode & MDS_FMODE_EXEC) {
1284 mds_allow_write_access(inode);
1287 if (last_orphan && unlink_orphan) {
1288 int stripe_count = 0;
1289 LASSERT(rc == 0); /* mds_put_write_access must have succeeded */
1291 CDEBUG(D_INODE, "destroying orphan object %s\n", fidname);
1293 if ((S_ISREG(inode->i_mode) && inode->i_nlink != 1) ||
1294 (S_ISDIR(inode->i_mode) && inode->i_nlink != 2))
1295 CERROR("found \"orphan\" %s %s with link count %d\n",
1296 S_ISREG(inode->i_mode) ? "file" : "dir",
1297 fidname, inode->i_nlink);
1299 /* Sadly, there is no easy way to save pending_child from
1300 * mds_reint_unlink() into mfd, so we need to re-lookup,
1301 * but normally it will still be in the dcache. */
1302 LOCK_INODE_MUTEX(pending_dir);
1303 cleanup_phase = 1; /* UNLOCK_INODE_MUTEX(pending_dir) when finished */
1304 pending_child = lookup_one_len(fidname, mds->mds_pending_dir,
1306 if (IS_ERR(pending_child))
1307 GOTO(cleanup, rc = PTR_ERR(pending_child));
1308 LASSERT(pending_child->d_inode != NULL);
1310 cleanup_phase = 2; /* dput(pending_child) when finished */
1311 if (S_ISDIR(pending_child->d_inode->i_mode)) {
1312 rc = vfs_rmdir(pending_dir, pending_child);
1314 CERROR("error unlinking orphan dir %s: rc %d\n",
1320 stripe_count = le32_to_cpu(lmm->lmm_stripe_count);
1323 handle = fsfilt_start_log(obd, pending_dir, FSFILT_OP_UNLINK,
1324 NULL, stripe_count);
1325 if (IS_ERR(handle)) {
1326 rc = PTR_ERR(handle);
1331 if (lmm != NULL && (*valid & OBD_MD_FLEASIZE) &&
1332 mds_log_op_unlink(obd, lmm, lmm_size,
1333 logcookies, cookies_size) > 0) {
1334 *valid |= OBD_MD_FLCOOKIE;
1339 pending_child->d_fsdata = (void *) &dp;
1340 rc = vfs_unlink(pending_dir, pending_child);
1342 CERROR("error unlinking orphan %s: rc %d\n",fidname,rc);
1344 goto out; /* Don't bother updating attrs on unlinked inode */
1348 if (request_body != NULL && mfd->mfd_mode & FMODE_WRITE && rc == 0) {
1349 /* Update the on-disk attributes if this was the last write
1350 * close, and all information was provided (i.e., rc == 0)
1352 * XXX this should probably be abstracted with mds_reint_setattr
1355 if (request_body->valid & OBD_MD_FLMTIME &&
1356 LTIME_S(iattr.ia_mtime) > LTIME_S(inode->i_mtime)) {
1357 LTIME_S(iattr.ia_mtime) = request_body->mtime;
1358 iattr.ia_valid |= ATTR_MTIME;
1360 if (request_body->valid & OBD_MD_FLCTIME &&
1361 LTIME_S(iattr.ia_ctime) > LTIME_S(inode->i_ctime)) {
1362 LTIME_S(iattr.ia_ctime) = request_body->ctime;
1363 iattr.ia_valid |= ATTR_CTIME;
1366 /* XXX can't set block count with fsfilt_setattr (!) */
1367 if (request_body->valid & OBD_MD_FLSIZE) {
1368 iattr.ia_valid |= ATTR_SIZE;
1369 iattr.ia_size = request_body->size;
1371 /* iattr.ia_blocks = request_body->blocks */
1375 if (request_body != NULL && request_body->valid & OBD_MD_FLATIME) {
1376 /* Only start a transaction to write out only the atime if
1377 * it is more out-of-date than the specified limit. If we
1378 * are already going to write out the atime then do it anyway.
1380 LTIME_S(iattr.ia_atime) = request_body->atime;
1381 if ((LTIME_S(iattr.ia_atime) >
1382 LTIME_S(inode->i_atime) + mds->mds_atime_diff) ||
1383 (iattr.ia_valid != 0 &&
1384 LTIME_S(iattr.ia_atime) > LTIME_S(inode->i_atime)))
1385 iattr.ia_valid |= ATTR_ATIME;
1388 if (iattr.ia_valid != 0) {
1389 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
1390 if (IS_ERR(handle)) {
1391 rc = PTR_ERR(handle);
1395 rc = fsfilt_setattr(obd, mfd->mfd_dentry, handle, &iattr, 0);
1397 CERROR("error in setattr(%s): rc %d\n", fidname, rc);
1400 /* If other clients have this file open for write, rc will be > 0 */
1403 l_dput(mfd->mfd_dentry);
1407 if (req != NULL && reply_body != NULL) {
1408 rc = mds_finish_transno(mds, pending_dir, handle, req, rc, 0, 0);
1409 } else if (handle) {
1410 int err = fsfilt_commit(obd, pending_dir, handle, 0);
1412 CERROR("error committing close: %d\n", err);
1418 switch (cleanup_phase) {
1420 dput(pending_child);
1422 UNLOCK_INODE_MUTEX(pending_dir);
1427 int mds_close(struct ptlrpc_request *req, int offset)
1429 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1430 struct obd_device *obd = req->rq_export->exp_obd;
1431 struct mds_body *body;
1432 struct mds_file_data *mfd;
1433 struct lvfs_run_ctxt saved;
1434 struct inode *inode;
1435 int rc, repsize[4] = { sizeof(struct ptlrpc_body),
1436 sizeof(struct mds_body),
1437 obd->u.mds.mds_max_mdsize,
1438 obd->u.mds.mds_max_cookiesize };
1439 struct mds_body *reply_body;
1440 struct lov_mds_md *lmm;
1442 struct llog_cookie *logcookies;
1446 rc = lustre_pack_reply(req, 4, repsize, NULL);
1448 CERROR("lustre_pack_reply: rc = %d\n", rc);
1449 req->rq_status = rc;
1450 /* continue on to drop local open even if we can't send reply */
1452 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1455 CDEBUG(D_INODE, "close req->rep_len %d mdsize %d cookiesize %d\n",
1457 obd->u.mds.mds_max_mdsize, obd->u.mds.mds_max_cookiesize);
1458 mds_counter_incr(req->rq_export, LPROC_MDS_CLOSE);
1460 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1461 lustre_swab_mds_body);
1463 CERROR("Can't unpack body\n");
1464 req->rq_status = -EFAULT;
1468 spin_lock(&med->med_open_lock);
1469 mfd = mds_handle2mfd(&body->handle);
1471 spin_unlock(&med->med_open_lock);
1472 DEBUG_REQ(D_ERROR, req, "no handle for file close ino "LPD64
1473 ": cookie "LPX64, body->fid1.id, body->handle.cookie);
1474 req->rq_status = -ESTALE;
1477 /* Remove mfd handle so it can't be found again. We consume mfd_list
1478 * reference here, but still have mds_handle2mfd ref until mfd_close. */
1479 mds_mfd_unlink(mfd, 1);
1480 spin_unlock(&med->med_open_lock);
1482 inode = mfd->mfd_dentry->d_inode;
1483 /* child orphan sem protects orphan_dec_test && is_orphan race */
1484 MDS_DOWN_WRITE_ORPHAN_SEM(inode); /* mds_mfd_close drops this */
1485 if (mds_inode_is_orphan(inode) && mds_orphan_open_count(inode) == 1) {
1486 body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF,
1488 LASSERT(body != NULL);
1490 mds_pack_inode2fid(&body->fid1, inode);
1491 mds_pack_inode2body(body, inode);
1492 mds_pack_md(obd, req->rq_repmsg, REPLY_REC_OFF + 1, body, inode,
1496 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1497 reply_body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*reply_body));
1498 lmm = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, 0);
1499 lmm_size = lustre_msg_buflen(req->rq_repmsg, REPLY_REC_OFF + 1),
1500 logcookies = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 2, 0);
1501 cookies_size = lustre_msg_buflen(req->rq_repmsg, REPLY_REC_OFF + 2);
1502 req->rq_status = mds_mfd_close(req, offset, obd, mfd, 1,
1503 lmm, lmm_size, logcookies, cookies_size,
1504 &reply_body->valid);
1505 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
1507 mds_shrink_reply(obd, req, body, REPLY_REC_OFF + 1);
1508 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) {
1509 CERROR("test case OBD_FAIL_MDS_CLOSE_PACK\n");
1510 req->rq_status = -ENOMEM;
1517 int mds_done_writing(struct ptlrpc_request *req, int offset)
1519 struct mds_body *body;
1520 int rc, size[2] = { sizeof(struct ptlrpc_body),
1521 sizeof(struct mds_body) };
1524 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1526 body = lustre_swab_reqbuf(req, offset, sizeof(*body),
1527 lustre_swab_mds_body);
1529 CERROR("Can't unpack body\n");
1530 req->rq_status = -EFAULT;
1534 rc = lustre_pack_reply(req, 2, size, NULL);
1536 CERROR("lustre_pack_reply: rc = %d\n", rc);
1537 req->rq_status = rc;