1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * linux/mds/mds_reint.c
5 * Lustre Metadata Server (mds) reintegration routines
7 * Copyright (C) 2002-2005 Cluster File Systems, Inc.
8 * Author: Peter Braam <braam@clusterfs.com>
9 * Author: Andreas Dilger <adilger@clusterfs.com>
10 * Author: Phil Schwan <phil@clusterfs.com>
12 * This file is part of the Lustre file system, http://www.lustre.org
13 * Lustre is a trademark of Cluster File Systems, Inc.
15 * You may have signed or agreed to another license before downloading
16 * this software. If so, you are bound by the terms and conditions
17 * of that agreement, and the following does not apply to you. See the
18 * LICENSE file included with this distribution for more information.
20 * If you did not agree to a different license, then this copy of Lustre
21 * is open source software; you can redistribute it and/or modify it
22 * under the terms of version 2 of the GNU General Public License as
23 * published by the Free Software Foundation.
25 * In either case, Lustre is distributed in the hope that it will be
26 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
27 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * license text for more details.
32 # define EXPORT_SYMTAB
34 #define DEBUG_SUBSYSTEM S_MDS
37 #include <obd_support.h>
38 #include <obd_class.h>
40 #include <lustre_lib.h>
41 #include <lustre/lustre_idl.h>
42 #include <lustre_mds.h>
43 #include <lustre_dlm.h>
44 #include <lustre_fsfilt.h>
45 #include <lustre_ucache.h>
47 #include "mds_internal.h"
49 void mds_commit_cb(struct obd_device *obd, __u64 transno, void *data,
52 obd_transno_commit_cb(obd, transno, error);
55 struct mds_logcancel_data {
56 struct lov_mds_md *mlcd_lmm;
60 struct llog_cookie mlcd_cookies[0];
64 static void mds_cancel_cookies_cb(struct obd_device *obd, __u64 transno,
65 void *cb_data, int error)
67 struct mds_logcancel_data *mlcd = cb_data;
68 struct lov_stripe_md *lsm = NULL;
69 struct llog_ctxt *ctxt;
72 obd_transno_commit_cb(obd, transno, error);
74 CDEBUG(D_RPCTRACE, "cancelling %d cookies\n",
75 (int)(mlcd->mlcd_cookielen / sizeof(*mlcd->mlcd_cookies)));
77 rc = obd_unpackmd(obd->u.mds.mds_osc_exp, &lsm, mlcd->mlcd_lmm,
78 mlcd->mlcd_eadatalen);
80 CERROR("bad LSM cancelling %d log cookies: rc %d\n",
81 (int)(mlcd->mlcd_cookielen/sizeof(*mlcd->mlcd_cookies)),
84 ///* XXX 0 normally, SENDNOW for debug */);
85 rc = obd_checkmd(obd->u.mds.mds_osc_exp, obd->obd_self_export,
88 CERROR("Can not revalidate lsm %p \n", lsm);
90 ctxt = llog_get_context(obd,mlcd->mlcd_cookies[0].lgc_subsys+1);
91 rc = llog_cancel(ctxt, lsm, mlcd->mlcd_cookielen /
92 sizeof(*mlcd->mlcd_cookies),
93 mlcd->mlcd_cookies, OBD_LLOG_FL_SENDNOW);
97 CERROR("error cancelling %d log cookies: rc %d\n",
98 (int)(mlcd->mlcd_cookielen /
99 sizeof(*mlcd->mlcd_cookies)), rc);
102 OBD_FREE(mlcd, mlcd->mlcd_size);
105 /* Assumes caller has already pushed us into the kernel context. */
106 int mds_finish_transno(struct mds_obd *mds, struct inode *inode, void *handle,
107 struct ptlrpc_request *req, int rc, __u32 op_data,
110 struct mds_export_data *med = &req->rq_export->exp_mds_data;
111 struct mds_client_data *mcd = med->med_mcd;
112 struct obd_device *obd = req->rq_export->exp_obd;
114 __u64 transno, prev_transno;
116 int log_pri = D_RPCTRACE;
119 if (IS_ERR(handle)) {
124 /* if the export has already been failed, we have no last_rcvd slot */
125 if (req->rq_export->exp_failed || obd->obd_fail) {
126 CWARN("commit transaction for disconnected client %s: rc %d\n",
127 req->rq_export->exp_client_uuid.uuid, rc);
135 if (handle == NULL) {
136 /* if we're starting our own xaction, use our own inode */
137 inode = mds->mds_rcvd_filp->f_dentry->d_inode;
138 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
139 if (IS_ERR(handle)) {
140 CERROR("fsfilt_start: %ld\n", PTR_ERR(handle));
141 RETURN(PTR_ERR(handle));
145 off = med->med_lr_off;
147 transno = lustre_msg_get_transno(req->rq_reqmsg);
150 CERROR("%s: replay %s transno "LPU64" failed: rc %d\n",
152 libcfs_nid2str(req->rq_export->exp_connection->c_peer.nid),
156 } else if (transno == 0) {
157 spin_lock(&mds->mds_transno_lock);
158 transno = ++mds->mds_last_transno;
159 spin_unlock(&mds->mds_transno_lock);
161 spin_lock(&mds->mds_transno_lock);
162 if (transno > mds->mds_last_transno)
163 mds->mds_last_transno = transno;
164 spin_unlock(&mds->mds_transno_lock);
167 req->rq_transno = transno;
168 lustre_msg_set_transno(req->rq_repmsg, transno);
169 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
170 prev_transno = le64_to_cpu(mcd->mcd_last_close_transno);
171 mcd->mcd_last_close_transno = cpu_to_le64(transno);
172 mcd->mcd_last_close_xid = cpu_to_le64(req->rq_xid);
173 mcd->mcd_last_close_result = cpu_to_le32(rc);
174 mcd->mcd_last_close_data = cpu_to_le32(op_data);
176 prev_transno = le64_to_cpu(mcd->mcd_last_transno);
177 if (((lustre_msg_get_flags(req->rq_reqmsg) &
178 (MSG_RESENT | MSG_REPLAY)) == 0) ||
179 (transno > prev_transno)) {
180 mcd->mcd_last_transno = cpu_to_le64(transno);
181 mcd->mcd_last_xid = cpu_to_le64(req->rq_xid);
182 mcd->mcd_last_result = cpu_to_le32(rc);
183 mcd->mcd_last_data = cpu_to_le32(op_data);
186 /* update the server data to not lose the greatest transno. Bug 11125 */
187 if ((transno == 0) && (prev_transno == mds->mds_last_transno))
188 mds_update_server_data(obd, 0);
191 CERROR("client idx %d has offset %lld\n", med->med_lr_idx, off);
194 struct obd_export *exp = req->rq_export;
197 force_sync = fsfilt_add_journal_cb(exp->exp_obd,transno,
198 handle, mds_commit_cb,
201 err = fsfilt_write_record(obd, mds->mds_rcvd_filp, mcd,
203 force_sync | exp->exp_need_sync);
205 mds_commit_cb(obd, transno, NULL, err);
214 DEBUG_REQ(log_pri, req,
215 "wrote trans #"LPU64" rc %d client %s at idx %u: err = %d",
216 transno, rc, mcd->mcd_uuid, med->med_lr_idx, err);
218 err = mds_lov_write_objids(obd);
224 CDEBUG(log_pri, "wrote objids: err = %d\n", err);
227 err = fsfilt_commit(obd, inode, handle, 0);
229 CERROR("error committing transaction: %d\n", err);
237 /* this gives the same functionality as the code between
238 * sys_chmod and inode_setattr
239 * chown_common and inode_setattr
240 * utimes and inode_setattr
242 int mds_fix_attr(struct inode *inode, struct mds_update_record *rec)
244 time_t now = CURRENT_SECONDS;
245 struct iattr *attr = &rec->ur_iattr;
246 unsigned int ia_valid = attr->ia_valid;
250 if (ia_valid & ATTR_RAW)
251 attr->ia_valid &= ~ATTR_RAW;
253 if (!(ia_valid & ATTR_CTIME_SET))
254 LTIME_S(attr->ia_ctime) = now;
256 attr->ia_valid &= ~ATTR_CTIME_SET;
257 if (!(ia_valid & ATTR_ATIME_SET))
258 LTIME_S(attr->ia_atime) = now;
259 if (!(ia_valid & ATTR_MTIME_SET))
260 LTIME_S(attr->ia_mtime) = now;
262 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
263 RETURN((attr->ia_valid & ~ATTR_ATTR_FLAG) ? -EPERM : 0);
266 if ((ia_valid & (ATTR_MTIME|ATTR_ATIME)) == (ATTR_MTIME|ATTR_ATIME)) {
267 if (current->fsuid != inode->i_uid &&
268 (error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
272 if (ia_valid & ATTR_SIZE &&
273 /* NFSD hack for open(O_CREAT|O_TRUNC)=mknod+truncate (bug 5781) */
274 !(rec->ur_uc.luc_fsuid == inode->i_uid &&
275 ia_valid & MDS_OPEN_OWNEROVERRIDE)) {
276 if ((error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
280 if (ia_valid & (ATTR_UID | ATTR_GID)) {
283 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
285 if (attr->ia_uid == (uid_t) -1)
286 attr->ia_uid = inode->i_uid;
287 if (attr->ia_gid == (gid_t) -1)
288 attr->ia_gid = inode->i_gid;
289 if (!(ia_valid & ATTR_MODE))
290 attr->ia_mode = inode->i_mode;
292 * If the user or group of a non-directory has been
293 * changed by a non-root user, remove the setuid bit.
294 * 19981026 David C Niemi <niemi@tux.org>
296 * Changed this to apply to all users, including root,
297 * to avoid some races. This is the behavior we had in
298 * 2.0. The check for non-root was definitely wrong
299 * for 2.2 anyway, as it should have been using
300 * CAP_FSETID rather than fsuid -- 19990830 SD.
302 if ((inode->i_mode & S_ISUID) == S_ISUID &&
303 !S_ISDIR(inode->i_mode)) {
304 attr->ia_mode &= ~S_ISUID;
305 attr->ia_valid |= ATTR_MODE;
308 * Likewise, if the user or group of a non-directory
309 * has been changed by a non-root user, remove the
310 * setgid bit UNLESS there is no group execute bit
311 * (this would be a file marked for mandatory
312 * locking). 19981026 David C Niemi <niemi@tux.org>
314 * Removed the fsuid check (see the comment above) --
317 if (((inode->i_mode & (S_ISGID | S_IXGRP)) ==
318 (S_ISGID | S_IXGRP)) && !S_ISDIR(inode->i_mode)) {
319 attr->ia_mode &= ~S_ISGID;
320 attr->ia_valid |= ATTR_MODE;
322 } else if (ia_valid & ATTR_MODE) {
323 int mode = attr->ia_mode;
325 if (attr->ia_mode == (umode_t)-1)
326 mode = inode->i_mode;
328 (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
333 void mds_steal_ack_locks(struct ptlrpc_request *req)
335 struct obd_export *exp = req->rq_export;
336 struct list_head *tmp;
337 struct ptlrpc_reply_state *oldrep;
338 struct ptlrpc_service *svc;
341 /* CAVEAT EMPTOR: spinlock order */
342 spin_lock(&exp->exp_lock);
343 list_for_each (tmp, &exp->exp_outstanding_replies) {
344 oldrep = list_entry(tmp, struct ptlrpc_reply_state,rs_exp_list);
346 if (oldrep->rs_xid != req->rq_xid)
349 if (lustre_msg_get_opc(oldrep->rs_msg) !=
350 lustre_msg_get_opc(req->rq_reqmsg))
351 CERROR ("Resent req xid "LPX64" has mismatched opc: "
352 "new %d old %d\n", req->rq_xid,
353 lustre_msg_get_opc(req->rq_reqmsg),
354 lustre_msg_get_opc(oldrep->rs_msg));
356 svc = oldrep->rs_service;
357 spin_lock (&svc->srv_lock);
359 list_del_init (&oldrep->rs_exp_list);
361 CWARN("Stealing %d locks from rs %p x"LPD64".t"LPD64
363 oldrep->rs_nlocks, oldrep,
364 oldrep->rs_xid, oldrep->rs_transno,
365 lustre_msg_get_opc(oldrep->rs_msg),
366 libcfs_nid2str(exp->exp_connection->c_peer.nid));
368 for (i = 0; i < oldrep->rs_nlocks; i++)
369 ptlrpc_save_lock(req,
370 &oldrep->rs_locks[i],
371 oldrep->rs_modes[i]);
372 oldrep->rs_nlocks = 0;
374 DEBUG_REQ(D_HA, req, "stole locks for");
375 ptlrpc_schedule_difficult_reply (oldrep);
377 spin_unlock (&svc->srv_lock);
380 spin_unlock(&exp->exp_lock);
382 EXPORT_SYMBOL(mds_steal_ack_locks);
383 void mds_req_from_mcd(struct ptlrpc_request *req, struct mds_client_data *mcd)
385 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
386 req->rq_transno = le64_to_cpu(mcd->mcd_last_close_transno);
387 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
388 req->rq_status = le32_to_cpu(mcd->mcd_last_close_result);
389 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
391 req->rq_transno = le64_to_cpu(mcd->mcd_last_transno);
392 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
393 req->rq_status = le32_to_cpu(mcd->mcd_last_result);
394 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
396 DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
397 req->rq_transno, req->rq_status);
399 mds_steal_ack_locks(req);
402 static void reconstruct_reint_setattr(struct mds_update_record *rec,
403 int offset, struct ptlrpc_request *req)
405 struct mds_export_data *med = &req->rq_export->exp_mds_data;
406 struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
408 struct mds_body *body;
410 mds_req_from_mcd(req, med->med_mcd);
412 de = mds_fid2dentry(obd, rec->ur_fid1, NULL);
414 LASSERT(PTR_ERR(de) == req->rq_status);
418 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
419 mds_pack_inode2fid(&body->fid1, de->d_inode);
420 mds_pack_inode2body(body, de->d_inode);
422 /* Don't return OST-specific attributes if we didn't just set them */
423 if (rec->ur_iattr.ia_valid & ATTR_SIZE)
424 body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
425 if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
426 body->valid |= OBD_MD_FLMTIME;
427 if (rec->ur_iattr.ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
428 body->valid |= OBD_MD_FLATIME;
433 int mds_osc_setattr_async(struct obd_device *obd, __u32 uid, __u32 gid,
434 struct lov_mds_md *lmm, int lmm_size,
435 struct llog_cookie *logcookies, __u64 id, __u32 gen,
438 struct mds_obd *mds = &obd->u.mds;
439 struct obd_trans_info oti = { 0 };
440 struct obd_info oinfo = { { { 0 } } };
444 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OST_SETATTR))
447 /* first get memory EA */
448 OBDO_ALLOC(oinfo.oi_oa);
454 rc = obd_unpackmd(mds->mds_osc_exp, &oinfo.oi_md, lmm, lmm_size);
456 CERROR("Error unpack md %p for inode "LPU64"\n", lmm, id);
460 rc = obd_checkmd(mds->mds_osc_exp, obd->obd_self_export, oinfo.oi_md);
462 CERROR("Error revalidate lsm %p \n", oinfo.oi_md);
467 oinfo.oi_oa->o_uid = uid;
468 oinfo.oi_oa->o_gid = gid;
469 oinfo.oi_oa->o_id = oinfo.oi_md->lsm_object_id;
470 oinfo.oi_oa->o_gr = oinfo.oi_md->lsm_object_gr;
471 oinfo.oi_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP |
472 OBD_MD_FLUID | OBD_MD_FLGID;
474 oinfo.oi_oa->o_valid |= OBD_MD_FLCOOKIE;
475 oti.oti_logcookies = logcookies;
478 oinfo.oi_oa->o_fid = id;
479 oinfo.oi_oa->o_generation = gen;
480 oinfo.oi_oa->o_valid |= OBD_MD_FLFID | OBD_MD_FLGENER;
483 /* do async setattr from mds to ost not waiting for responses. */
484 rc = obd_setattr_async(mds->mds_osc_exp, &oinfo, &oti, NULL);
486 CDEBUG(D_INODE, "mds to ost setattr objid 0x"LPX64
487 " on ost error %d\n", oinfo.oi_md->lsm_object_id, rc);
490 obd_free_memmd(mds->mds_osc_exp, &oinfo.oi_md);
491 OBDO_FREE(oinfo.oi_oa);
494 EXPORT_SYMBOL(mds_osc_setattr_async);
496 /* In the raw-setattr case, we lock the child inode.
497 * In the write-back case or if being called from open, the client holds a lock
500 * We use the ATTR_FROM_OPEN flag to tell these cases apart. */
501 static int mds_reint_setattr(struct mds_update_record *rec, int offset,
502 struct ptlrpc_request *req,
503 struct lustre_handle *lh)
505 unsigned int ia_valid = rec->ur_iattr.ia_valid;
506 struct mds_obd *mds = mds_req2mds(req);
507 struct obd_device *obd = req->rq_export->exp_obd;
508 struct mds_body *body;
510 struct inode *inode = NULL;
511 struct lustre_handle lockh;
513 struct mds_logcancel_data *mlcd = NULL;
514 struct lov_mds_md *lmm = NULL;
515 struct llog_cookie *logcookies = NULL;
516 int lmm_size = 0, need_lock = 1, cookie_size = 0;
517 int rc = 0, cleanup_phase = 0, err, locked = 0, sync = 0;
518 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
519 unsigned int qpids[MAXQUOTAS] = { rec->ur_iattr.ia_uid,
520 rec->ur_iattr.ia_gid };
523 LASSERT(offset == REQ_REC_OFF);
524 offset = REPLY_REC_OFF;
526 DEBUG_REQ(D_INODE, req, "setattr "LPU64"/%u %x", rec->ur_fid1->id,
527 rec->ur_fid1->generation, rec->ur_iattr.ia_valid);
528 OBD_COUNTER_INCREMENT(obd, setattr);
530 MDS_CHECK_RESENT(req, reconstruct_reint_setattr(rec, offset, req));
533 ldlm_request_cancel(req, rec->ur_dlm, 0);
535 if (rec->ur_iattr.ia_valid & ATTR_FROM_OPEN ||
536 (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)) {
537 de = mds_fid2dentry(mds, rec->ur_fid1, NULL);
539 GOTO(cleanup, rc = PTR_ERR(de));
540 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
541 GOTO(cleanup, rc = -EROFS);
543 __u64 lockpart = MDS_INODELOCK_UPDATE;
544 if (rec->ur_iattr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
545 lockpart |= MDS_INODELOCK_LOOKUP;
547 de = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX,
550 GOTO(cleanup, rc = PTR_ERR(de));
558 if ((rec->ur_iattr.ia_valid & ATTR_FROM_OPEN) ||
559 (rec->ur_iattr.ia_valid & ATTR_SIZE)) {
560 /* Check write access for the O_TRUNC case */
561 if (mds_query_write_access(inode) < 0)
562 GOTO(cleanup, rc = -ETXTBSY);
565 /* save uid/gid for quota acq/rel */
566 qcids[USRQUOTA] = inode->i_uid;
567 qcids[GRPQUOTA] = inode->i_gid;
569 if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
570 rec->ur_eadata != NULL) {
571 LOCK_INODE_MUTEX(inode);
575 OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_SETATTR_WRITE, inode->i_sb);
577 /* start a log jounal handle if needed */
578 if (S_ISREG(inode->i_mode) &&
579 rec->ur_iattr.ia_valid & (ATTR_UID | ATTR_GID)) {
580 lmm_size = mds->mds_max_mdsize;
581 OBD_ALLOC(lmm, lmm_size);
583 GOTO(cleanup, rc = -ENOMEM);
586 rc = mds_get_md(obd, inode, lmm, &lmm_size, need_lock);
591 handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL,
592 le32_to_cpu(lmm->lmm_stripe_count));
594 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
597 GOTO(cleanup, rc = PTR_ERR(handle));
599 if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
600 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu\n",
601 LTIME_S(rec->ur_iattr.ia_mtime),
602 LTIME_S(rec->ur_iattr.ia_ctime));
603 rc = mds_fix_attr(inode, rec);
607 if (rec->ur_iattr.ia_valid & ATTR_ATTR_FLAG) { /* ioctl */
608 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_SETFLAGS,
609 (long)&rec->ur_flags);
610 } else if (rec->ur_iattr.ia_valid) { /* setattr */
611 rc = fsfilt_setattr(obd, de, handle, &rec->ur_iattr, 0);
612 /* journal chown/chgrp in llog, just like unlink */
613 if (rc == 0 && lmm_size){
614 cookie_size = mds_get_cookie_size(obd, lmm);
615 OBD_ALLOC(logcookies, cookie_size);
616 if (logcookies == NULL)
617 GOTO(cleanup, rc = -ENOMEM);
619 if (mds_log_op_setattr(obd, inode->i_uid, inode->i_gid,
621 logcookies, cookie_size) <= 0) {
622 OBD_FREE(logcookies, cookie_size);
628 if (rc == 0 && (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
629 rec->ur_eadata != NULL) {
630 struct lov_stripe_md *lsm = NULL;
631 struct lov_user_md *lum = NULL;
633 rc = ll_permission(inode, MAY_WRITE, NULL);
637 lum = rec->ur_eadata;
638 /* if { size, offset, count } = { 0, -1, 0 } (i.e. all default
639 * values specified) then delete default striping from dir. */
640 if (S_ISDIR(inode->i_mode) &&
641 ((lum->lmm_stripe_size == 0 &&
642 lum->lmm_stripe_offset ==
643 (typeof(lum->lmm_stripe_offset))(-1) &&
644 lum->lmm_stripe_count == 0) ||
645 /* lmm_stripe_size == -1 is deprecated in 1.4.6 */
646 lum->lmm_stripe_size ==
647 (typeof(lum->lmm_stripe_size))(-1))){
648 rc = fsfilt_set_md(obd, inode, handle, NULL, 0, "lov");
652 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
654 &lsm, rec->ur_eadata);
658 obd_free_memmd(mds->mds_osc_exp, &lsm);
660 rc = fsfilt_set_md(obd, inode, handle, rec->ur_eadata,
661 rec->ur_eadatalen, "lov");
667 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
668 mds_pack_inode2fid(&body->fid1, inode);
669 mds_pack_inode2body(body, inode);
671 /* don't return OST-specific attributes if we didn't just set them. */
672 if (ia_valid & ATTR_SIZE)
673 body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
674 if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
675 body->valid |= OBD_MD_FLMTIME;
676 if (ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
677 body->valid |= OBD_MD_FLATIME;
679 if (rc == 0 && rec->ur_cookielen && !IS_ERR(mds->mds_osc_obd)) {
680 OBD_ALLOC(mlcd, sizeof(*mlcd) + rec->ur_cookielen +
683 mlcd->mlcd_size = sizeof(*mlcd) + rec->ur_cookielen +
685 mlcd->mlcd_eadatalen = rec->ur_eadatalen;
686 mlcd->mlcd_cookielen = rec->ur_cookielen;
687 mlcd->mlcd_lmm = (void *)&mlcd->mlcd_cookies +
688 mlcd->mlcd_cookielen;
689 memcpy(&mlcd->mlcd_cookies, rec->ur_logcookies,
690 mlcd->mlcd_cookielen);
691 memcpy(mlcd->mlcd_lmm, rec->ur_eadata,
692 mlcd->mlcd_eadatalen);
694 CERROR("unable to allocate log cancel data\n");
700 sync = fsfilt_add_journal_cb(req->rq_export->exp_obd, 0, handle,
701 mds_cancel_cookies_cb, mlcd);
702 err = mds_finish_transno(mds, inode, handle, req, rc, 0, sync);
703 /* do mds to ost setattr if needed */
704 if (!rc && !err && lmm_size)
705 mds_osc_setattr_async(obd, inode->i_ino, inode->i_generation, lmm,
706 lmm_size, logcookies, rec->ur_fid1->id,
707 rec->ur_fid1->generation, NULL);
709 switch (cleanup_phase) {
711 OBD_FREE(lmm, mds->mds_max_mdsize);
713 OBD_FREE(logcookies, cookie_size);
715 if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
716 rec->ur_eadata != NULL)
717 UNLOCK_INODE_MUTEX(inode);
721 ldlm_lock_decref(&lockh, LCK_EX);
723 ptlrpc_save_lock (req, &lockh, LCK_EX);
736 /* trigger dqrel/dqacq for original owner and new owner */
737 if (ia_valid & (ATTR_UID | ATTR_GID))
738 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
744 static void reconstruct_reint_create(struct mds_update_record *rec, int offset,
745 struct ptlrpc_request *req)
747 struct mds_export_data *med = &req->rq_export->exp_mds_data;
748 struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
749 struct dentry *parent, *child;
750 struct mds_body *body;
752 mds_req_from_mcd(req, med->med_mcd);
757 parent = mds_fid2dentry(obd, rec->ur_fid1, NULL);
758 LASSERT(!IS_ERR(parent));
759 child = ll_lookup_one_len(rec->ur_name, parent, rec->ur_namelen - 1);
760 LASSERT(!IS_ERR(child));
762 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
763 mds_pack_inode2fid(&body->fid1, child->d_inode);
764 mds_pack_inode2body(body, child->d_inode);
770 static int mds_reint_create(struct mds_update_record *rec, int offset,
771 struct ptlrpc_request *req,
772 struct lustre_handle *lh)
774 struct dentry *dparent = NULL;
775 struct mds_obd *mds = mds_req2mds(req);
776 struct obd_device *obd = req->rq_export->exp_obd;
777 struct dentry *dchild = NULL;
778 struct inode *dir = NULL;
780 struct lustre_handle lockh;
781 int rc = 0, err, type = rec->ur_mode & S_IFMT, cleanup_phase = 0;
783 unsigned int qcids[MAXQUOTAS] = { current->fsuid, current->fsgid };
784 unsigned int qpids[MAXQUOTAS] = { 0, 0 };
785 struct lvfs_dentry_params dp = LVFS_DENTRY_PARAMS_INIT;
788 LASSERT(offset == REQ_REC_OFF);
789 offset = REPLY_REC_OFF;
791 LASSERT(!strcmp(req->rq_export->exp_obd->obd_type->typ_name,
794 DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u name %s mode %o",
795 rec->ur_fid1->id, rec->ur_fid1->generation,
796 rec->ur_name, rec->ur_mode);
798 MDS_CHECK_RESENT(req, reconstruct_reint_create(rec, offset, req));
800 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
801 GOTO(cleanup, rc = -ESTALE);
804 ldlm_request_cancel(req, rec->ur_dlm, 0);
806 dparent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX, &lockh,
807 MDS_INODELOCK_UPDATE);
808 if (IS_ERR(dparent)) {
809 rc = PTR_ERR(dparent);
811 CERROR("parent "LPU64"/%u lookup error %d\n",
812 rec->ur_fid1->id, rec->ur_fid1->generation, rc);
815 cleanup_phase = 1; /* locked parent dentry */
816 dir = dparent->d_inode;
819 ldlm_lock_dump_handle(D_OTHER, &lockh);
821 dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
822 if (IS_ERR(dchild)) {
823 rc = PTR_ERR(dchild);
824 if (rc != -ENAMETOOLONG)
825 CERROR("child lookup error %d\n", rc);
829 cleanup_phase = 2; /* child dentry */
831 OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_CREATE_WRITE, dir->i_sb);
833 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY) {
835 GOTO(cleanup, rc = -EEXIST);
836 GOTO(cleanup, rc = -EROFS);
839 if (dir->i_mode & S_ISGID && S_ISDIR(rec->ur_mode))
840 rec->ur_mode |= S_ISGID;
842 dchild->d_fsdata = (void *)&dp;
843 dp.ldp_inum = (unsigned long)rec->ur_fid2->id;
848 handle = fsfilt_start(obd, dir, FSFILT_OP_CREATE, NULL);
850 GOTO(cleanup, rc = PTR_ERR(handle));
851 rc = ll_vfs_create(dir, dchild, rec->ur_mode, NULL);
852 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
857 handle = fsfilt_start(obd, dir, FSFILT_OP_MKDIR, NULL);
859 GOTO(cleanup, rc = PTR_ERR(handle));
860 rc = vfs_mkdir(dir, dchild, rec->ur_mode);
861 mds_counter_incr(req->rq_export, LPROC_MDS_MKDIR);
866 handle = fsfilt_start(obd, dir, FSFILT_OP_SYMLINK, NULL);
868 GOTO(cleanup, rc = PTR_ERR(handle));
869 if (rec->ur_tgt == NULL) /* no target supplied */
870 rc = -EINVAL; /* -EPROTO? */
872 rc = ll_vfs_symlink(dir, dchild, rec->ur_tgt, S_IALLUGO);
873 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
881 int rdev = rec->ur_rdev;
882 handle = fsfilt_start(obd, dir, FSFILT_OP_MKNOD, NULL);
884 GOTO(cleanup, rc = PTR_ERR(handle));
885 rc = vfs_mknod(dir, dchild, rec->ur_mode, rdev);
886 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
891 CERROR("bad file type %o creating %s\n", type, rec->ur_name);
892 dchild->d_fsdata = NULL;
893 GOTO(cleanup, rc = -EINVAL);
896 /* In case we stored the desired inum in here, we want to clean up. */
897 if (dchild->d_fsdata == (void *)(unsigned long)rec->ur_fid2->id)
898 dchild->d_fsdata = NULL;
901 CDEBUG(D_INODE, "error during create: %d\n", rc);
905 struct inode *inode = dchild->d_inode;
906 struct mds_body *body;
909 LTIME_S(iattr.ia_atime) = rec->ur_time;
910 LTIME_S(iattr.ia_ctime) = rec->ur_time;
911 LTIME_S(iattr.ia_mtime) = rec->ur_time;
912 iattr.ia_uid = current->fsuid; /* set by push_ctxt already */
913 if (dir->i_mode & S_ISGID)
914 iattr.ia_gid = dir->i_gid;
916 iattr.ia_gid = current->fsgid;
917 iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
918 ATTR_MTIME | ATTR_CTIME;
920 if (rec->ur_fid2->id) {
921 LASSERT(rec->ur_fid2->id == inode->i_ino);
922 inode->i_generation = rec->ur_fid2->generation;
923 /* Dirtied and committed by the upcoming setattr. */
924 CDEBUG(D_INODE, "recreated ino %lu with gen %u\n",
925 inode->i_ino, inode->i_generation);
927 CDEBUG(D_INODE, "created ino %lu with gen %x\n",
928 inode->i_ino, inode->i_generation);
931 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
933 CERROR("error on child setattr: rc = %d\n", rc);
935 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
936 rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
938 CERROR("error on parent setattr: rc = %d\n", rc);
940 if (S_ISDIR(inode->i_mode)) {
941 struct lov_mds_md lmm;
942 int lmm_size = sizeof(lmm);
943 rc = mds_get_md(obd, dir, &lmm, &lmm_size, 1);
945 LOCK_INODE_MUTEX(inode);
946 rc = fsfilt_set_md(obd, inode, handle,
947 &lmm, lmm_size, "lov");
948 UNLOCK_INODE_MUTEX(inode);
951 CERROR("error on copy stripe info: rc = %d\n",
955 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
956 mds_pack_inode2fid(&body->fid1, inode);
957 mds_pack_inode2body(body, inode);
962 err = mds_finish_transno(mds, dir, handle, req, rc, 0, 0);
965 /* Destroy the file we just created. This should not need
966 * extra journal credits, as we have already modified all of
967 * the blocks needed in order to create the file in the first
972 err = vfs_rmdir(dir, dchild);
974 CERROR("rmdir in error path: %d\n", err);
977 err = vfs_unlink(dir, dchild);
979 CERROR("unlink in error path: %d\n", err);
982 } else if (created) {
983 /* The inode we were allocated may have just been freed
984 * by an unlink operation. We take this lock to
985 * synchronize against the matching reply-ack-lock taken
986 * in unlink, to avoid replay problems if this reply
987 * makes it out to the client but the unlink's does not.
988 * See bug 2029 for more detail.*/
989 mds_lock_new_child(obd, dchild->d_inode, NULL);
990 /* save uid/gid of create inode and parent */
991 qpids[USRQUOTA] = dir->i_uid;
992 qpids[GRPQUOTA] = dir->i_gid;
997 switch (cleanup_phase) {
998 case 2: /* child dentry */
1000 case 1: /* locked parent dentry */
1002 ldlm_lock_decref(&lockh, LCK_EX);
1004 ptlrpc_save_lock (req, &lockh, LCK_EX);
1010 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
1013 req->rq_status = rc;
1015 /* trigger dqacq on the owner of child and parent */
1016 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
1021 int res_gt(const struct ldlm_res_id *res1, const struct ldlm_res_id *res2,
1022 ldlm_policy_data_t *p1, ldlm_policy_data_t *p2)
1026 for (i = 0; i < RES_NAME_SIZE; i++) {
1027 /* return 1 here, because enqueue_ordered will skip resources
1028 * of all zeroes if they're sorted to the end of the list. */
1029 if (res1->name[i] == 0 && res2->name[i] != 0)
1031 if (res2->name[i] == 0 && res1->name[i] != 0)
1034 if (res1->name[i] > res2->name[i])
1036 if (res1->name[i] < res2->name[i])
1041 if (memcmp(p1, p2, sizeof(*p1)) < 0)
1046 /* This function doesn't use ldlm_match_or_enqueue because we're always called
1047 * with EX or PW locks, and the MDS is no longer allowed to match write locks,
1048 * because they take the place of local semaphores.
1050 * One or two locks are taken in numerical order. A res_id->name[0] of 0 means
1051 * no lock is taken for that res_id. Must be at least one non-zero res_id. */
1052 int enqueue_ordered_locks(struct obd_device *obd,
1053 const struct ldlm_res_id *p1_res_id,
1054 struct lustre_handle *p1_lockh, int p1_lock_mode,
1055 ldlm_policy_data_t *p1_policy,
1056 const struct ldlm_res_id *p2_res_id,
1057 struct lustre_handle *p2_lockh, int p2_lock_mode,
1058 ldlm_policy_data_t *p2_policy)
1060 const struct ldlm_res_id *res_id[2] = { p1_res_id, p2_res_id };
1061 struct lustre_handle *handles[2] = { p1_lockh, p2_lockh };
1062 int lock_modes[2] = { p1_lock_mode, p2_lock_mode };
1063 ldlm_policy_data_t *policies[2] = {p1_policy, p2_policy};
1067 LASSERT(p1_res_id != NULL && p2_res_id != NULL);
1069 CDEBUG(D_INFO, "locks before: "LPU64"/"LPU64"\n",
1070 res_id[0]->name[0], res_id[1]->name[0]);
1072 if (res_gt(p1_res_id, p2_res_id, p1_policy, p2_policy)) {
1073 handles[1] = p1_lockh;
1074 handles[0] = p2_lockh;
1075 res_id[1] = p1_res_id;
1076 res_id[0] = p2_res_id;
1077 lock_modes[1] = p1_lock_mode;
1078 lock_modes[0] = p2_lock_mode;
1079 policies[1] = p1_policy;
1080 policies[0] = p2_policy;
1083 CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"\n",
1084 res_id[0]->name[0], res_id[1]->name[0]);
1086 flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1087 rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id[0],
1088 LDLM_IBITS, policies[0], lock_modes[0],
1089 &flags, ldlm_blocking_ast,
1090 ldlm_completion_ast, NULL, NULL, 0,
1094 ldlm_lock_dump_handle(D_OTHER, handles[0]);
1096 if (memcmp(res_id[0], res_id[1], sizeof(*res_id[0])) == 0 &&
1097 (policies[0]->l_inodebits.bits & policies[1]->l_inodebits.bits)) {
1098 memcpy(handles[1], handles[0], sizeof(*(handles[1])));
1099 ldlm_lock_addref(handles[1], lock_modes[1]);
1100 } else if (res_id[1]->name[0] != 0) {
1101 flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1102 rc = ldlm_cli_enqueue_local(obd->obd_namespace, res_id[1],
1103 LDLM_IBITS, policies[1],
1104 lock_modes[1], &flags,
1106 ldlm_completion_ast, NULL, NULL,
1107 0, NULL, handles[1]);
1108 if (rc != ELDLM_OK) {
1109 ldlm_lock_decref(handles[0], lock_modes[0]);
1112 ldlm_lock_dump_handle(D_OTHER, handles[1]);
1118 static inline int res_eq(const struct ldlm_res_id *res1,
1119 const struct ldlm_res_id *res2)
1121 return !memcmp(res1, res2, sizeof(*res1));
1125 try_to_aggregate_locks(const struct ldlm_res_id *res1, ldlm_policy_data_t *p1,
1126 const struct ldlm_res_id *res2, ldlm_policy_data_t *p2)
1128 if (!res_eq(res1, res2))
1130 /* XXX: any additional inodebits (to current LOOKUP and UPDATE)
1131 * should be taken with great care here */
1132 p1->l_inodebits.bits |= p2->l_inodebits.bits;
1135 int enqueue_4ordered_locks(struct obd_device *obd,
1136 const struct ldlm_res_id *p1_res_id,
1137 struct lustre_handle *p1_lockh, int p1_lock_mode,
1138 ldlm_policy_data_t *p1_policy,
1139 const struct ldlm_res_id *p2_res_id,
1140 struct lustre_handle *p2_lockh, int p2_lock_mode,
1141 ldlm_policy_data_t *p2_policy,
1142 const struct ldlm_res_id *c1_res_id,
1143 struct lustre_handle *c1_lockh, int c1_lock_mode,
1144 ldlm_policy_data_t *c1_policy,
1145 const struct ldlm_res_id *c2_res_id,
1146 struct lustre_handle *c2_lockh, int c2_lock_mode,
1147 ldlm_policy_data_t *c2_policy)
1149 const struct ldlm_res_id *res_id[5] = { p1_res_id, p2_res_id,
1150 c1_res_id, c2_res_id };
1151 struct lustre_handle *dlm_handles[5] = { p1_lockh, p2_lockh,
1152 c1_lockh, c2_lockh };
1153 int lock_modes[5] = { p1_lock_mode, p2_lock_mode,
1154 c1_lock_mode, c2_lock_mode };
1155 ldlm_policy_data_t *policies[5] = {p1_policy, p2_policy,
1156 c1_policy, c2_policy};
1157 int rc, i, j, sorted, flags;
1160 CDEBUG(D_DLMTRACE, "locks before: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
1161 res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
1162 res_id[3]->name[0]);
1164 /* simple insertion sort - we have at most 4 elements */
1165 for (i = 1; i < 4; i++) {
1167 dlm_handles[4] = dlm_handles[i];
1168 res_id[4] = res_id[i];
1169 lock_modes[4] = lock_modes[i];
1170 policies[4] = policies[i];
1174 if (res_gt(res_id[j], res_id[4], policies[j],
1176 dlm_handles[j + 1] = dlm_handles[j];
1177 res_id[j + 1] = res_id[j];
1178 lock_modes[j + 1] = lock_modes[j];
1179 policies[j + 1] = policies[j];
1184 } while (j >= 0 && !sorted);
1186 dlm_handles[j + 1] = dlm_handles[4];
1187 res_id[j + 1] = res_id[4];
1188 lock_modes[j + 1] = lock_modes[4];
1189 policies[j + 1] = policies[4];
1192 CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
1193 res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
1194 res_id[3]->name[0]);
1196 /* XXX we could send ASTs on all these locks first before blocking? */
1197 for (i = 0; i < 4; i++) {
1198 flags = LDLM_FL_ATOMIC_CB;
1199 if (res_id[i]->name[0] == 0)
1201 if (i && res_eq(res_id[i], res_id[i-1])) {
1202 memcpy(dlm_handles[i], dlm_handles[i-1],
1203 sizeof(*(dlm_handles[i])));
1204 ldlm_lock_addref(dlm_handles[i], lock_modes[i]);
1206 /* we need to enqueue locks with different inodebits
1207 * at once, because otherwise concurrent thread can
1208 * hit the windown between these two locks and we'll
1209 * get to deadlock. see bug 10360. note also, that it
1210 * is impossible to have >2 equal res. */
1212 try_to_aggregate_locks(res_id[i], policies[i],
1213 res_id[i+1], policies[i+1]);
1214 rc = ldlm_cli_enqueue_local(obd->obd_namespace,
1215 res_id[i], LDLM_IBITS,
1216 policies[i], lock_modes[i],
1217 &flags, ldlm_blocking_ast,
1218 ldlm_completion_ast, NULL,
1222 GOTO(out_err, rc = -EIO);
1223 ldlm_lock_dump_handle(D_OTHER, dlm_handles[i]);
1230 ldlm_lock_decref(dlm_handles[i], lock_modes[i]);
1235 /* In the unlikely case that the child changed while we were waiting
1236 * on the lock, we need to drop the lock on the old child and either:
1237 * - if the child has a lower resource name, then we have to also
1238 * drop the parent lock and regain the locks in the right order
1239 * - in the rename case, if the child has a lower resource name than one of
1240 * the other parent/child resources (maxres) we also need to reget the locks
1241 * - if the child has a higher resource name (this is the common case)
1242 * we can just get the lock on the new child (still in lock order)
1244 * Returns 0 if the child did not change or if it changed but could be locked.
1245 * Returns 1 if the child changed and we need to re-lock (no locks held).
1246 * Returns -ve error with a valid dchild (no locks held). */
1247 static int mds_verify_child(struct obd_device *obd,
1248 const struct ldlm_res_id *parent_res_id,
1249 struct lustre_handle *parent_lockh,
1250 struct dentry *dparent, int parent_mode,
1251 struct ldlm_res_id *child_res_id,
1252 struct lustre_handle *child_lockh,
1253 struct dentry **dchildp, int child_mode,
1254 ldlm_policy_data_t *child_policy,
1255 const char *name, int namelen,
1256 const struct ldlm_res_id *maxres)
1258 struct dentry *vchild, *dchild = *dchildp;
1259 int rc = 0, cleanup_phase = 2; /* parent, child locks */
1262 vchild = ll_lookup_one_len(name, dparent, namelen - 1);
1264 GOTO(cleanup, rc = PTR_ERR(vchild));
1266 if (likely((vchild->d_inode == NULL && child_res_id->name[0] == 0) ||
1267 (vchild->d_inode != NULL &&
1268 child_res_id->name[0] == vchild->d_inode->i_ino &&
1269 child_res_id->name[1] == vchild->d_inode->i_generation))) {
1277 CDEBUG(D_DLMTRACE, "child inode changed: %p != %p (%lu != "LPU64")\n",
1278 vchild->d_inode, dchild ? dchild->d_inode : 0,
1279 vchild->d_inode ? vchild->d_inode->i_ino : 0,
1280 child_res_id->name[0]);
1281 if (child_res_id->name[0] != 0)
1282 ldlm_lock_decref(child_lockh, child_mode);
1286 cleanup_phase = 1; /* parent lock only */
1287 *dchildp = dchild = vchild;
1289 if (dchild->d_inode) {
1290 int flags = LDLM_FL_ATOMIC_CB;
1291 child_res_id->name[0] = dchild->d_inode->i_ino;
1292 child_res_id->name[1] = dchild->d_inode->i_generation;
1294 /* Make sure that we don't try to re-enqueue a lock on the
1295 * same resource if it happens that the source is renamed to
1296 * the target by another thread (bug 9974, thanks racer :-) */
1297 if (!res_gt(child_res_id, parent_res_id, NULL, NULL) ||
1298 !res_gt(child_res_id, maxres, NULL, NULL)) {
1299 CDEBUG(D_DLMTRACE, "relock "LPU64"<("LPU64"|"LPU64")\n",
1300 child_res_id->name[0], parent_res_id->name[0],
1302 GOTO(cleanup, rc = 1);
1305 rc = ldlm_cli_enqueue_local(obd->obd_namespace, child_res_id,
1306 LDLM_IBITS, child_policy,
1309 ldlm_completion_ast, NULL,
1310 NULL, 0, NULL, child_lockh);
1312 GOTO(cleanup, rc = -EIO);
1314 memset(child_res_id, 0, sizeof(*child_res_id));
1320 switch(cleanup_phase) {
1322 if (child_res_id->name[0] != 0)
1323 ldlm_lock_decref(child_lockh, child_mode);
1325 ldlm_lock_decref(parent_lockh, parent_mode);
1331 #define INODE_CTIME_AGE (10)
1332 #define INODE_CTIME_OLD(inode) (LTIME_S(inode->i_ctime) + \
1333 INODE_CTIME_AGE < CURRENT_SECONDS)
1335 int mds_get_parent_child_locked(struct obd_device *obd, struct mds_obd *mds,
1337 struct lustre_handle *parent_lockh,
1338 struct dentry **dparentp, int parent_mode,
1339 __u64 parent_lockpart,
1340 char *name, int namelen,
1341 struct lustre_handle *child_lockh,
1342 struct dentry **dchildp, int child_mode,
1343 __u64 child_lockpart)
1345 struct ldlm_res_id child_res_id = { .name = {0} };
1346 struct ldlm_res_id parent_res_id = { .name = {0} };
1347 ldlm_policy_data_t parent_policy = {.l_inodebits = { parent_lockpart }};
1348 ldlm_policy_data_t child_policy = {.l_inodebits = { child_lockpart }};
1349 struct inode *inode;
1350 int rc = 0, cleanup_phase = 0;
1353 /* Step 1: Lookup parent */
1354 *dparentp = mds_fid2dentry(mds, fid, NULL);
1355 if (IS_ERR(*dparentp)) {
1356 rc = PTR_ERR(*dparentp);
1361 CDEBUG(D_INODE, "parent ino %lu, name %s\n",
1362 (*dparentp)->d_inode->i_ino, name);
1364 parent_res_id.name[0] = (*dparentp)->d_inode->i_ino;
1365 parent_res_id.name[1] = (*dparentp)->d_inode->i_generation;
1367 cleanup_phase = 1; /* parent dentry */
1369 /* Step 2: Lookup child (without DLM lock, to get resource name) */
1370 *dchildp = ll_lookup_one_len(name, *dparentp, namelen - 1);
1371 if (IS_ERR(*dchildp)) {
1372 rc = PTR_ERR(*dchildp);
1373 CDEBUG(D_INODE, "child lookup error %d\n", rc);
1377 cleanup_phase = 2; /* child dentry */
1378 inode = (*dchildp)->d_inode;
1379 if (inode != NULL) {
1380 if (is_bad_inode(inode)) {
1381 CERROR("bad inode returned %lu/%u\n",
1382 inode->i_ino, inode->i_generation);
1383 GOTO(cleanup, rc = -ENOENT);
1385 inode = igrab(inode);
1390 child_res_id.name[0] = inode->i_ino;
1391 child_res_id.name[1] = inode->i_generation;
1393 /* If we want a LCK_CR for a directory, and this directory has not been
1394 changed for some time, we return not only a LOOKUP lock, but also an
1395 UPDATE lock to have negative dentry starts working for this dir.
1396 Also we apply same logic to non-directories. If the file is rarely
1397 changed - we return both locks and this might save us RPC on
1399 if ((child_mode & (LCK_CR|LCK_PR|LCK_CW)) && INODE_CTIME_OLD(inode))
1400 child_policy.l_inodebits.bits |= MDS_INODELOCK_UPDATE;
1405 cleanup_phase = 2; /* child dentry */
1407 /* Step 3: Lock parent and child in resource order. If child doesn't
1408 * exist, we still have to lock the parent and re-lookup. */
1409 rc = enqueue_ordered_locks(obd,&parent_res_id,parent_lockh,parent_mode,
1411 &child_res_id, child_lockh, child_mode,
1416 if (!(*dchildp)->d_inode)
1417 cleanup_phase = 3; /* parent lock */
1419 cleanup_phase = 4; /* child lock */
1421 /* Step 4: Re-lookup child to verify it hasn't changed since locking */
1422 rc = mds_verify_child(obd, &parent_res_id, parent_lockh, *dparentp,
1423 parent_mode, &child_res_id, child_lockh, dchildp,
1424 child_mode,&child_policy, name, namelen, &parent_res_id);
1434 switch (cleanup_phase) {
1436 ldlm_lock_decref(child_lockh, child_mode);
1438 ldlm_lock_decref(parent_lockh, parent_mode);
1449 void mds_reconstruct_generic(struct ptlrpc_request *req)
1451 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1453 mds_req_from_mcd(req, med->med_mcd);
1456 /* If we are unlinking an open file/dir (i.e. creating an orphan) then
1457 * we instead link the inode into the PENDING directory until it is
1458 * finally released. We can't simply call mds_reint_rename() or some
1459 * part thereof, because we don't have the inode to check for link
1460 * count/open status until after it is locked.
1462 * For lock ordering, caller must get child->i_mutex first, then
1463 * pending->i_mutex before starting journal transaction.
1465 * returns 1 on success
1466 * returns 0 if we lost a race and didn't make a new link
1467 * returns negative on error
1469 static int mds_orphan_add_link(struct mds_update_record *rec,
1470 struct obd_device *obd, struct dentry *dentry)
1472 struct mds_obd *mds = &obd->u.mds;
1473 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
1474 struct inode *inode = dentry->d_inode;
1475 struct dentry *pending_child;
1476 char fidname[LL_FID_NAMELEN];
1477 int fidlen = 0, rc, mode;
1480 LASSERT(inode != NULL);
1481 LASSERT(!mds_inode_is_orphan(inode));
1482 #ifndef HAVE_I_ALLOC_SEM
1483 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
1485 LASSERT(TRYLOCK_INODE_MUTEX(pending_dir) == 0);
1487 fidlen = ll_fid2str(fidname, inode->i_ino, inode->i_generation);
1489 CDEBUG(D_INODE, "pending destroy of %dx open %d linked %s %s = %s\n",
1490 mds_orphan_open_count(inode), inode->i_nlink,
1491 S_ISDIR(inode->i_mode) ? "dir" :
1492 S_ISREG(inode->i_mode) ? "file" : "other",rec->ur_name,fidname);
1494 if (mds_orphan_open_count(inode) == 0 || inode->i_nlink != 0)
1497 pending_child = lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
1498 if (IS_ERR(pending_child))
1499 RETURN(PTR_ERR(pending_child));
1501 if (pending_child->d_inode != NULL) {
1502 CERROR("re-destroying orphan file %s?\n", rec->ur_name);
1503 LASSERT(pending_child->d_inode == inode);
1504 GOTO(out_dput, rc = 0);
1507 /* link() is semanticaly-wrong for S_IFDIR, so we set S_IFREG
1508 * for linking and return real mode back then -bzzz */
1509 mode = inode->i_mode;
1510 inode->i_mode = S_IFREG;
1511 rc = vfs_link(dentry, pending_dir, pending_child);
1513 CERROR("error linking orphan %s to PENDING: rc = %d\n",
1516 mds_inode_set_orphan(inode);
1518 /* return mode and correct i_nlink if inode is directory */
1519 inode->i_mode = mode;
1520 LASSERTF(inode->i_nlink == 1, "%s nlink == %d\n",
1521 S_ISDIR(mode) ? "dir" : S_ISREG(mode) ? "file" : "other",
1523 if (S_ISDIR(mode)) {
1525 pending_dir->i_nlink++;
1526 mark_inode_dirty(inode);
1527 mark_inode_dirty(pending_dir);
1530 GOTO(out_dput, rc = 1);
1532 l_dput(pending_child);
1536 int mds_get_cookie_size(struct obd_device *obd, struct lov_mds_md *lmm)
1538 int count = le32_to_cpu(lmm->lmm_stripe_count);
1539 int real_csize = count * sizeof(struct llog_cookie);
1543 void mds_shrink_reply(struct obd_device *obd, struct ptlrpc_request *req,
1544 struct mds_body *body, int md_off)
1546 int cookie_size = 0, md_size = 0;
1548 if (body && body->valid & OBD_MD_FLEASIZE) {
1549 md_size = body->eadatasize;
1551 if (body && body->valid & OBD_MD_FLCOOKIE) {
1552 LASSERT(body->valid & OBD_MD_FLEASIZE);
1553 cookie_size = mds_get_cookie_size(obd, lustre_msg_buf(
1554 req->rq_repmsg, md_off, 0));
1557 CDEBUG(D_INFO, "Shrink to md_size %d cookie_size %d \n", md_size,
1560 lustre_shrink_reply(req, md_off, md_size, 1);
1562 lustre_shrink_reply(req, md_off + (md_size > 0), cookie_size, 0);
1565 static int mds_reint_unlink(struct mds_update_record *rec, int offset,
1566 struct ptlrpc_request *req,
1567 struct lustre_handle *lh)
1569 struct dentry *dparent = NULL, *dchild;
1570 struct mds_obd *mds = mds_req2mds(req);
1571 struct obd_device *obd = req->rq_export->exp_obd;
1572 struct mds_body *body = NULL;
1573 struct inode *child_inode = NULL;
1574 struct lustre_handle parent_lockh, child_lockh, child_reuse_lockh;
1575 void *handle = NULL;
1576 int rc = 0, cleanup_phase = 0;
1577 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
1578 unsigned int qpids[MAXQUOTAS] = { 0, 0 };
1581 LASSERT(offset == REQ_REC_OFF); /* || offset == DLM_INTENT_REC_OFF); */
1582 offset = REPLY_REC_OFF;
1584 DEBUG_REQ(D_INODE, req, "parent ino "LPU64"/%u, child %s",
1585 rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name);
1587 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1589 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK))
1590 GOTO(cleanup, rc = -ENOENT);
1593 ldlm_request_cancel(req, rec->ur_dlm, 0);
1595 rc = mds_get_parent_child_locked(obd, mds, rec->ur_fid1,
1596 &parent_lockh, &dparent, LCK_EX,
1597 MDS_INODELOCK_UPDATE,
1598 rec->ur_name, rec->ur_namelen,
1599 &child_lockh, &dchild, LCK_EX,
1600 MDS_INODELOCK_FULL);
1604 cleanup_phase = 1; /* dchild, dparent, locks */
1607 child_inode = dchild->d_inode;
1608 if (child_inode == NULL) {
1609 CDEBUG(D_INODE, "child doesn't exist (dir %lu, name %s)\n",
1610 dparent->d_inode->i_ino, rec->ur_name);
1611 GOTO(cleanup, rc = -ENOENT);
1614 /* save uid/gid for quota acquire/release */
1615 qcids[USRQUOTA] = child_inode->i_uid;
1616 qcids[GRPQUOTA] = child_inode->i_gid;
1617 qpids[USRQUOTA] = dparent->d_inode->i_uid;
1618 qpids[GRPQUOTA] = dparent->d_inode->i_gid;
1620 cleanup_phase = 2; /* dchild has a lock */
1622 /* We have to do these checks ourselves, in case we are making an
1623 * orphan. The client tells us whether rmdir() or unlink() was called,
1624 * so we need to return appropriate errors (bug 72). */
1625 if ((rec->ur_mode & S_IFMT) == S_IFDIR) {
1626 if (!S_ISDIR(child_inode->i_mode))
1627 GOTO(cleanup, rc = -ENOTDIR);
1629 if (S_ISDIR(child_inode->i_mode))
1630 GOTO(cleanup, rc = -EISDIR);
1633 /* Check for EROFS after we check ENODENT, ENOTDIR, and EISDIR */
1634 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
1635 GOTO(cleanup, rc = -EROFS);
1637 /* Step 3: Get a lock on the ino to sync with creation WRT inode
1638 * reuse (see bug 2029). */
1639 rc = mds_lock_new_child(obd, child_inode, &child_reuse_lockh);
1643 cleanup_phase = 3; /* child inum lock */
1645 OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_UNLINK_WRITE, dparent->d_inode->i_sb);
1647 /* ldlm_reply in buf[0] if called via intent */
1648 if (offset == DLM_INTENT_REC_OFF)
1649 offset = DLM_REPLY_REC_OFF;
1651 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
1652 LASSERT(body != NULL);
1654 /* child orphan sem protects orphan_dec_test && is_orphan race */
1655 MDS_DOWN_READ_ORPHAN_SEM(child_inode);
1656 cleanup_phase = 4; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
1658 /* If this is potentially the last reference to this inode, get the
1659 * OBD EA data first so the client can destroy OST objects. We
1660 * only do the object removal later if no open files/links remain. */
1661 if ((S_ISDIR(child_inode->i_mode) && child_inode->i_nlink == 2) ||
1662 child_inode->i_nlink == 1) {
1663 if (mds_orphan_open_count(child_inode) > 0) {
1664 /* need to lock pending_dir before transaction */
1665 LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
1666 cleanup_phase = 5; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
1667 } else if (S_ISREG(child_inode->i_mode)) {
1668 mds_pack_inode2fid(&body->fid1, child_inode);
1669 mds_pack_inode2body(body, child_inode);
1670 mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
1671 child_inode, MDS_PACK_MD_LOCK);
1675 /* Step 4: Do the unlink: we already verified ur_mode above (bug 72) */
1676 switch (child_inode->i_mode & S_IFMT) {
1678 /* Drop any lingering child directories before we start our
1679 * transaction, to avoid doing multiple inode dirty/delete
1680 * in our compound transaction (bug 1321). */
1681 shrink_dcache_parent(dchild);
1682 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_RMDIR,
1685 GOTO(cleanup, rc = PTR_ERR(handle));
1686 rc = vfs_rmdir(dparent->d_inode, dchild);
1687 mds_counter_incr(req->rq_export, LPROC_MDS_RMDIR);
1690 struct lov_mds_md *lmm = lustre_msg_buf(req->rq_repmsg,
1692 handle = fsfilt_start_log(obd, dparent->d_inode,
1693 FSFILT_OP_UNLINK, NULL,
1694 le32_to_cpu(lmm->lmm_stripe_count));
1696 GOTO(cleanup, rc = PTR_ERR(handle));
1697 rc = vfs_unlink(dparent->d_inode, dchild);
1698 mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
1706 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_UNLINK,
1709 GOTO(cleanup, rc = PTR_ERR(handle));
1710 rc = vfs_unlink(dparent->d_inode, dchild);
1711 mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
1714 CERROR("bad file type %o unlinking %s\n", rec->ur_mode,
1717 GOTO(cleanup, rc = -EINVAL);
1720 if (rc == 0 && child_inode->i_nlink == 0) {
1721 if (mds_orphan_open_count(child_inode) > 0)
1722 rc = mds_orphan_add_link(rec, obd, dchild);
1725 GOTO(cleanup, rc = 0);
1727 if (!S_ISREG(child_inode->i_mode))
1730 if (!(body->valid & OBD_MD_FLEASIZE)) {
1731 body->valid |=(OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
1732 OBD_MD_FLATIME | OBD_MD_FLMTIME);
1733 } else if (mds_log_op_unlink(obd,
1734 lustre_msg_buf(req->rq_repmsg, offset + 1, 0),
1735 lustre_msg_buflen(req->rq_repmsg, offset + 1),
1736 lustre_msg_buf(req->rq_repmsg, offset + 2, 0),
1737 lustre_msg_buflen(req->rq_repmsg, offset+2)) >
1739 body->valid |= OBD_MD_FLCOOKIE;
1749 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
1750 LTIME_S(iattr.ia_mtime) = rec->ur_time;
1751 LTIME_S(iattr.ia_ctime) = rec->ur_time;
1753 err = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
1755 CERROR("error on parent setattr: rc = %d\n", err);
1758 rc = mds_finish_transno(mds, dparent ? dparent->d_inode : NULL,
1759 handle, req, rc, 0, 0);
1761 (void)obd_set_info_async(mds->mds_osc_exp, strlen("unlinked"),
1762 "unlinked", 0, NULL, NULL);
1763 switch(cleanup_phase) {
1764 case 5: /* pending_dir semaphore */
1765 UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
1766 case 4: /* child inode semaphore */
1767 MDS_UP_READ_ORPHAN_SEM(child_inode);
1768 case 3: /* child ino-reuse lock */
1769 if (rc && body != NULL) {
1770 // Don't unlink the OST objects if the MDS unlink failed
1774 ldlm_lock_decref(&child_reuse_lockh, LCK_EX);
1776 ptlrpc_save_lock(req, &child_reuse_lockh, LCK_EX);
1777 case 2: /* child lock */
1778 ldlm_lock_decref(&child_lockh, LCK_EX);
1779 case 1: /* child and parent dentry, parent lock */
1781 ldlm_lock_decref(&parent_lockh, LCK_EX);
1783 ptlrpc_save_lock(req, &parent_lockh, LCK_EX);
1790 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
1793 req->rq_status = rc;
1795 mds_shrink_reply(obd, req, body, REPLY_REC_OFF + 1);
1797 /* trigger dqrel on the owner of child and parent */
1798 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc, FSFILT_OP_UNLINK);
1802 static int mds_reint_link(struct mds_update_record *rec, int offset,
1803 struct ptlrpc_request *req,
1804 struct lustre_handle *lh)
1806 struct obd_device *obd = req->rq_export->exp_obd;
1807 struct dentry *de_src = NULL;
1808 struct dentry *de_tgt_dir = NULL;
1809 struct dentry *dchild = NULL;
1810 struct mds_obd *mds = mds_req2mds(req);
1811 struct lustre_handle *handle = NULL, tgt_dir_lockh, src_lockh;
1812 struct ldlm_res_id src_res_id = { .name = {0} };
1813 struct ldlm_res_id tgt_dir_res_id = { .name = {0} };
1814 ldlm_policy_data_t src_policy ={.l_inodebits = {MDS_INODELOCK_UPDATE}};
1815 ldlm_policy_data_t tgt_dir_policy =
1816 {.l_inodebits = {MDS_INODELOCK_UPDATE}};
1817 int rc = 0, cleanup_phase = 0;
1820 LASSERT(offset == REQ_REC_OFF);
1822 DEBUG_REQ(D_INODE, req, "original "LPU64"/%u to "LPU64"/%u %s",
1823 rec->ur_fid1->id, rec->ur_fid1->generation,
1824 rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_name);
1825 mds_counter_incr(req->rq_export, LPROC_MDS_LINK);
1827 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1829 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK))
1830 GOTO(cleanup, rc = -ENOENT);
1833 ldlm_request_cancel(req, rec->ur_dlm, 0);
1835 /* Step 1: Lookup the source inode and target directory by FID */
1836 de_src = mds_fid2dentry(mds, rec->ur_fid1, NULL);
1838 GOTO(cleanup, rc = PTR_ERR(de_src));
1840 cleanup_phase = 1; /* source dentry */
1842 de_tgt_dir = mds_fid2dentry(mds, rec->ur_fid2, NULL);
1843 if (IS_ERR(de_tgt_dir)) {
1844 rc = PTR_ERR(de_tgt_dir);
1849 cleanup_phase = 2; /* target directory dentry */
1851 CDEBUG(D_INODE, "linking %.*s/%s to inode %lu\n",
1852 de_tgt_dir->d_name.len, de_tgt_dir->d_name.name, rec->ur_name,
1853 de_src->d_inode->i_ino);
1855 /* Step 2: Take the two locks */
1856 src_res_id.name[0] = de_src->d_inode->i_ino;
1857 src_res_id.name[1] = de_src->d_inode->i_generation;
1858 tgt_dir_res_id.name[0] = de_tgt_dir->d_inode->i_ino;
1859 tgt_dir_res_id.name[1] = de_tgt_dir->d_inode->i_generation;
1861 rc = enqueue_ordered_locks(obd, &src_res_id, &src_lockh, LCK_EX,
1863 &tgt_dir_res_id, &tgt_dir_lockh, LCK_EX,
1868 cleanup_phase = 3; /* locks */
1870 if (mds_inode_is_orphan(de_src->d_inode)) {
1871 CDEBUG(D_INODE, "an attempt to link an orphan inode %lu/%u\n",
1872 de_src->d_inode->i_ino,
1873 de_src->d_inode->i_generation);
1874 GOTO(cleanup, rc = -ENOENT);
1877 /* Step 3: Lookup the child */
1878 dchild = ll_lookup_one_len(rec->ur_name, de_tgt_dir, rec->ur_namelen-1);
1879 if (IS_ERR(dchild)) {
1880 rc = PTR_ERR(dchild);
1881 if (rc != -EPERM && rc != -EACCES && rc != -ENAMETOOLONG)
1882 CERROR("child lookup error %d\n", rc);
1886 cleanup_phase = 4; /* child dentry */
1888 if (dchild->d_inode) {
1889 CDEBUG(D_INODE, "child exists (dir %lu, name %s)\n",
1890 de_tgt_dir->d_inode->i_ino, rec->ur_name);
1895 /* Step 4: Do it. */
1896 OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_LINK_WRITE, de_src->d_inode->i_sb);
1898 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
1899 GOTO(cleanup, rc = -EROFS);
1901 handle = fsfilt_start(obd, de_tgt_dir->d_inode, FSFILT_OP_LINK, NULL);
1903 GOTO(cleanup, rc = PTR_ERR(handle));
1905 rc = vfs_link(de_src, de_tgt_dir->d_inode, dchild);
1906 if (rc && rc != -EPERM && rc != -EACCES)
1907 CERROR("vfs_link error %d\n", rc);
1909 rc = mds_finish_transno(mds, de_tgt_dir ? de_tgt_dir->d_inode : NULL,
1910 handle, req, rc, 0, 0);
1913 switch (cleanup_phase) {
1914 case 4: /* child dentry */
1918 ldlm_lock_decref(&src_lockh, LCK_EX);
1919 ldlm_lock_decref(&tgt_dir_lockh, LCK_EX);
1921 ptlrpc_save_lock(req, &src_lockh, LCK_EX);
1922 ptlrpc_save_lock(req, &tgt_dir_lockh, LCK_EX);
1924 case 2: /* target dentry */
1926 case 1: /* source dentry */
1931 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
1934 req->rq_status = rc;
1938 /* The idea here is that we need to get four locks in the end:
1939 * one on each parent directory, one on each child. We need to take
1940 * these locks in some kind of order (to avoid deadlocks), and the order
1941 * I selected is "increasing resource number" order. We need to look up
1942 * the children, however, before we know what the resource number(s) are.
1943 * Thus the following plan:
1945 * 1,2. Look up the parents
1946 * 3,4. Look up the children
1947 * 5. Take locks on the parents and children, in order
1948 * 6. Verify that the children haven't changed since they were looked up
1950 * If there was a race and the children changed since they were first looked
1951 * up, it is possible that mds_verify_child() will be able to just grab the
1952 * lock on the new child resource (if it has a higher resource than any other)
1953 * but we need to compare against not only its parent, but also against the
1954 * parent and child of the "other half" of the rename, hence maxres_{src,tgt}.
1956 * We need the fancy igrab() on the child inodes because we aren't holding a
1957 * lock on the parent after the lookup is done, so dentry->d_inode may change
1958 * at any time, and igrab() itself doesn't like getting passed a NULL argument.
1960 int mds_get_parents_children_locked(struct obd_device *obd,
1961 struct mds_obd *mds,
1962 struct ll_fid *p1_fid,
1963 struct dentry **de_srcdirp,
1964 struct ll_fid *p2_fid,
1965 struct dentry **de_tgtdirp,
1967 const char *old_name, int old_len,
1968 struct dentry **de_oldp,
1969 const char *new_name, int new_len,
1970 struct dentry **de_newp,
1971 struct lustre_handle *dlm_handles,
1974 struct ldlm_res_id p1_res_id = { .name = {0} };
1975 struct ldlm_res_id p2_res_id = { .name = {0} };
1976 struct ldlm_res_id c1_res_id = { .name = {0} };
1977 struct ldlm_res_id c2_res_id = { .name = {0} };
1978 ldlm_policy_data_t p_policy = {.l_inodebits = {MDS_INODELOCK_UPDATE}};
1979 /* Only dentry should disappear, but the inode itself would be
1980 intact otherwise. */
1981 ldlm_policy_data_t c1_policy = {.l_inodebits = {MDS_INODELOCK_LOOKUP}};
1982 /* If something is going to be replaced, both dentry and inode locks are needed */
1983 ldlm_policy_data_t c2_policy = {.l_inodebits = {MDS_INODELOCK_FULL}};
1984 struct ldlm_res_id *maxres_src, *maxres_tgt;
1985 struct inode *inode;
1986 int rc = 0, cleanup_phase = 0;
1989 /* Step 1: Lookup the source directory */
1990 *de_srcdirp = mds_fid2dentry(mds, p1_fid, NULL);
1991 if (IS_ERR(*de_srcdirp))
1992 GOTO(cleanup, rc = PTR_ERR(*de_srcdirp));
1994 cleanup_phase = 1; /* source directory dentry */
1996 p1_res_id.name[0] = (*de_srcdirp)->d_inode->i_ino;
1997 p1_res_id.name[1] = (*de_srcdirp)->d_inode->i_generation;
1999 /* Step 2: Lookup the target directory */
2000 if (memcmp(p1_fid, p2_fid, sizeof(*p1_fid)) == 0) {
2001 *de_tgtdirp = dget(*de_srcdirp);
2003 *de_tgtdirp = mds_fid2dentry(mds, p2_fid, NULL);
2004 if (IS_ERR(*de_tgtdirp)) {
2005 rc = PTR_ERR(*de_tgtdirp);
2011 cleanup_phase = 2; /* target directory dentry */
2013 p2_res_id.name[0] = (*de_tgtdirp)->d_inode->i_ino;
2014 p2_res_id.name[1] = (*de_tgtdirp)->d_inode->i_generation;
2016 /* Step 3: Lookup the source child entry */
2017 *de_oldp = ll_lookup_one_len(old_name, *de_srcdirp, old_len - 1);
2018 if (IS_ERR(*de_oldp)) {
2019 rc = PTR_ERR(*de_oldp);
2020 CDEBUG(D_INODE, "old child lookup error (%.*s): %d\n",
2021 old_len - 1, old_name, rc);
2025 cleanup_phase = 3; /* original name dentry */
2027 inode = (*de_oldp)->d_inode;
2029 inode = igrab(inode);
2031 GOTO(cleanup, rc = -ENOENT);
2033 c1_res_id.name[0] = inode->i_ino;
2034 c1_res_id.name[1] = inode->i_generation;
2038 /* Step 4: Lookup the target child entry */
2040 GOTO(retry_locks, rc);
2041 *de_newp = ll_lookup_one_len(new_name, *de_tgtdirp, new_len - 1);
2042 if (IS_ERR(*de_newp)) {
2043 rc = PTR_ERR(*de_newp);
2044 if (rc != -ENAMETOOLONG)
2045 CERROR("new child lookup error (%.*s): %d\n",
2046 old_len - 1, old_name, rc);
2050 cleanup_phase = 4; /* target dentry */
2052 inode = (*de_newp)->d_inode;
2054 inode = igrab(inode);
2058 c2_res_id.name[0] = inode->i_ino;
2059 c2_res_id.name[1] = inode->i_generation;
2063 /* Step 5: Take locks on the parents and child(ren) */
2064 maxres_src = &p1_res_id;
2065 maxres_tgt = &p2_res_id;
2066 cleanup_phase = 4; /* target dentry */
2068 if (c1_res_id.name[0] != 0 && res_gt(&c1_res_id, &p1_res_id,NULL,NULL))
2069 maxres_src = &c1_res_id;
2070 if (c2_res_id.name[0] != 0 && res_gt(&c2_res_id, &p2_res_id,NULL,NULL))
2071 maxres_tgt = &c2_res_id;
2073 rc = enqueue_4ordered_locks(obd, &p1_res_id,&dlm_handles[0],parent_mode,
2075 &p2_res_id, &dlm_handles[1], parent_mode,
2077 &c1_res_id, &dlm_handles[2], child_mode,
2079 &c2_res_id, &dlm_handles[3], child_mode,
2084 cleanup_phase = 6; /* parent and child(ren) locks */
2086 /* Step 6a: Re-lookup source child to verify it hasn't changed */
2087 rc = mds_verify_child(obd, &p1_res_id, &dlm_handles[0], *de_srcdirp,
2088 parent_mode, &c1_res_id, &dlm_handles[2], de_oldp,
2089 child_mode, &c1_policy, old_name, old_len,
2092 if (c2_res_id.name[0] != 0)
2093 ldlm_lock_decref(&dlm_handles[3], child_mode);
2094 ldlm_lock_decref(&dlm_handles[1], parent_mode);
2101 if ((*de_oldp)->d_inode == NULL)
2102 GOTO(cleanup, rc = -ENOENT);
2106 /* Step 6b: Re-lookup target child to verify it hasn't changed */
2107 rc = mds_verify_child(obd, &p2_res_id, &dlm_handles[1], *de_tgtdirp,
2108 parent_mode, &c2_res_id, &dlm_handles[3], de_newp,
2109 child_mode, &c2_policy, new_name, new_len,
2112 ldlm_lock_decref(&dlm_handles[2], child_mode);
2113 ldlm_lock_decref(&dlm_handles[0], parent_mode);
2123 switch (cleanup_phase) {
2124 case 6: /* child lock(s) */
2125 if (c2_res_id.name[0] != 0)
2126 ldlm_lock_decref(&dlm_handles[3], child_mode);
2127 if (c1_res_id.name[0] != 0)
2128 ldlm_lock_decref(&dlm_handles[2], child_mode);
2129 case 5: /* parent locks */
2130 ldlm_lock_decref(&dlm_handles[1], parent_mode);
2131 ldlm_lock_decref(&dlm_handles[0], parent_mode);
2132 case 4: /* target dentry */
2134 case 3: /* source dentry */
2136 case 2: /* target directory dentry */
2137 l_dput(*de_tgtdirp);
2138 case 1: /* source directry dentry */
2139 l_dput(*de_srcdirp);
2146 static int mds_reint_rename(struct mds_update_record *rec, int offset,
2147 struct ptlrpc_request *req,
2148 struct lustre_handle *lockh)
2150 struct obd_device *obd = req->rq_export->exp_obd;
2151 struct dentry *de_srcdir = NULL;
2152 struct dentry *de_tgtdir = NULL;
2153 struct dentry *de_old = NULL;
2154 struct dentry *de_new = NULL;
2155 struct inode *old_inode = NULL, *new_inode = NULL;
2156 struct mds_obd *mds = mds_req2mds(req);
2157 struct lustre_handle dlm_handles[4];
2158 struct mds_body *body = NULL;
2159 struct lov_mds_md *lmm = NULL;
2160 int rc = 0, lock_count = 3, cleanup_phase = 0;
2161 void *handle = NULL;
2162 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
2163 unsigned int qpids[4] = { 0, 0, 0, 0 };
2166 LASSERT(offset == REQ_REC_OFF);
2167 offset = REPLY_REC_OFF;
2169 DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u %s to "LPU64"/%u %s",
2170 rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name,
2171 rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_tgt);
2172 mds_counter_incr(req->rq_export, LPROC_MDS_RENAME);
2174 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
2177 ldlm_request_cancel(req, rec->ur_dlm, 0);
2179 rc = mds_get_parents_children_locked(obd, mds, rec->ur_fid1, &de_srcdir,
2180 rec->ur_fid2, &de_tgtdir, LCK_EX,
2181 rec->ur_name, rec->ur_namelen,
2182 &de_old, rec->ur_tgt,
2183 rec->ur_tgtlen, &de_new,
2184 dlm_handles, LCK_EX);
2188 cleanup_phase = 1; /* parent(s), children, locks */
2190 old_inode = de_old->d_inode;
2191 new_inode = de_new->d_inode;
2193 if (new_inode != NULL)
2196 /* sanity check for src inode */
2197 if (old_inode->i_ino == de_srcdir->d_inode->i_ino ||
2198 old_inode->i_ino == de_tgtdir->d_inode->i_ino)
2199 GOTO(cleanup, rc = -EINVAL);
2201 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2202 GOTO(cleanup, rc = -EROFS);
2204 if (new_inode == NULL)
2208 cleanup_phase = 2; /* iput(new_inode) when finished */
2210 /* sanity check for dest inode */
2211 if (new_inode->i_ino == de_srcdir->d_inode->i_ino ||
2212 new_inode->i_ino == de_tgtdir->d_inode->i_ino)
2213 GOTO(cleanup, rc = -EINVAL);
2215 if (old_inode == new_inode)
2216 GOTO(cleanup, rc = 0);
2218 /* save uids/gids for qunit acquire/release */
2219 qcids[USRQUOTA] = old_inode->i_uid;
2220 qcids[GRPQUOTA] = old_inode->i_gid;
2221 qpids[USRQUOTA] = de_tgtdir->d_inode->i_uid;
2222 qpids[GRPQUOTA] = de_tgtdir->d_inode->i_gid;
2223 qpids[2] = de_srcdir->d_inode->i_uid;
2224 qpids[3] = de_srcdir->d_inode->i_gid;
2226 /* if we are about to remove the target at first, pass the EA of
2227 * that inode to client to perform and cleanup on OST */
2228 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
2229 LASSERT(body != NULL);
2231 /* child orphan sem protects orphan_dec_test && is_orphan race */
2232 MDS_DOWN_READ_ORPHAN_SEM(new_inode);
2233 cleanup_phase = 3; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
2235 if ((S_ISDIR(new_inode->i_mode) && new_inode->i_nlink == 2) ||
2236 new_inode->i_nlink == 1) {
2237 if (mds_orphan_open_count(new_inode) > 0) {
2238 /* need to lock pending_dir before transaction */
2239 LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
2240 cleanup_phase = 4; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
2241 } else if (S_ISREG(new_inode->i_mode)) {
2242 mds_pack_inode2fid(&body->fid1, new_inode);
2243 mds_pack_inode2body(body, new_inode);
2244 mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
2245 new_inode, MDS_PACK_MD_LOCK);
2250 OBD_FAIL_WRITE(OBD_FAIL_MDS_REINT_RENAME_WRITE,
2251 de_srcdir->d_inode->i_sb);
2253 /* Check if we are moving old entry into its child. 2.6 does not
2254 check for this in vfs_rename() anymore */
2255 if (is_subdir(de_new, de_old))
2256 GOTO(cleanup, rc = -EINVAL);
2258 lmm = lustre_msg_buf(req->rq_repmsg, offset + 1, 0);
2259 handle = fsfilt_start_log(obd, de_tgtdir->d_inode, FSFILT_OP_RENAME,
2260 NULL, le32_to_cpu(lmm->lmm_stripe_count));
2263 GOTO(cleanup, rc = PTR_ERR(handle));
2266 de_old->d_fsdata = req;
2267 de_new->d_fsdata = req;
2269 rc = vfs_rename(de_srcdir->d_inode, de_old, de_tgtdir->d_inode, de_new);
2272 if (rc == 0 && new_inode != NULL && new_inode->i_nlink == 0) {
2273 if (mds_orphan_open_count(new_inode) > 0)
2274 rc = mds_orphan_add_link(rec, obd, de_new);
2277 GOTO(cleanup, rc = 0);
2279 if (!S_ISREG(new_inode->i_mode))
2282 if (!(body->valid & OBD_MD_FLEASIZE)) {
2283 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
2284 OBD_MD_FLATIME | OBD_MD_FLMTIME);
2285 } else if (mds_log_op_unlink(obd,
2286 lustre_msg_buf(req->rq_repmsg,
2288 lustre_msg_buflen(req->rq_repmsg,
2290 lustre_msg_buf(req->rq_repmsg,
2292 lustre_msg_buflen(req->rq_repmsg,
2295 body->valid |= OBD_MD_FLCOOKIE;
2301 rc = mds_finish_transno(mds, de_tgtdir ? de_tgtdir->d_inode : NULL,
2302 handle, req, rc, 0, 0);
2304 switch (cleanup_phase) {
2306 UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
2308 MDS_UP_READ_ORPHAN_SEM(new_inode);
2313 if (lock_count == 4)
2314 ldlm_lock_decref(&(dlm_handles[3]), LCK_EX);
2315 ldlm_lock_decref(&(dlm_handles[2]), LCK_EX);
2316 ldlm_lock_decref(&(dlm_handles[1]), LCK_EX);
2317 ldlm_lock_decref(&(dlm_handles[0]), LCK_EX);
2319 if (lock_count == 4)
2320 ptlrpc_save_lock(req,&(dlm_handles[3]), LCK_EX);
2321 ptlrpc_save_lock(req, &(dlm_handles[2]), LCK_EX);
2322 ptlrpc_save_lock(req, &(dlm_handles[1]), LCK_EX);
2323 ptlrpc_save_lock(req, &(dlm_handles[0]), LCK_EX);
2332 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
2335 req->rq_status = rc;
2337 /* acquire/release qunit */
2338 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc, FSFILT_OP_RENAME);
2342 typedef int (*mds_reinter)(struct mds_update_record *, int offset,
2343 struct ptlrpc_request *, struct lustre_handle *);
2345 static mds_reinter reinters[REINT_MAX] = {
2346 [REINT_SETATTR] mds_reint_setattr,
2347 [REINT_CREATE] mds_reint_create,
2348 [REINT_LINK] mds_reint_link,
2349 [REINT_UNLINK] mds_reint_unlink,
2350 [REINT_RENAME] mds_reint_rename,
2351 [REINT_OPEN] mds_open
2354 int mds_reint_rec(struct mds_update_record *rec, int offset,
2355 struct ptlrpc_request *req, struct lustre_handle *lockh)
2357 struct obd_device *obd = req->rq_export->exp_obd;
2359 struct mds_obd *mds = &obd->u.mds;
2361 gid_t fsgid = rec->ur_uc.luc_fsgid;
2364 struct lvfs_run_ctxt saved;
2369 if (req->rq_uid != LNET_UID_ANY) {
2370 /* non-root local cluster client
2371 * NB root's creds are believed... */
2372 LASSERT (req->rq_uid != 0);
2373 rec->ur_uc.luc_fsuid = req->rq_uid;
2374 rec->ur_uc.luc_cap = 0;
2379 /* get group info of this user */
2380 rec->ur_uc.luc_uce = upcall_cache_get_entry(mds->mds_group_hash,
2381 rec->ur_uc.luc_fsuid,
2382 rec->ur_uc.luc_fsgid, 2,
2383 &rec->ur_uc.luc_suppgid1);
2385 if (IS_ERR(rec->ur_uc.luc_uce)) {
2386 rc = PTR_ERR(rec->ur_uc.luc_uce);
2387 rec->ur_uc.luc_uce = NULL;
2391 /* checked by unpacker */
2392 LASSERT(rec->ur_opcode < REINT_MAX && reinters[rec->ur_opcode] != NULL);
2395 if (rec->ur_uc.luc_uce)
2396 rec->ur_uc.luc_fsgid = rec->ur_uc.luc_uce->ue_primary;
2400 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
2404 if (rec->ur_uc.luc_uce && fsgid != rec->ur_uc.luc_fsgid &&
2405 in_group_p(fsgid)) {
2406 rec->ur_uc.luc_fsgid = fsgid;
2407 current->fsgid = saved.luc.luc_fsgid = fsgid;
2412 rc = reinters[rec->ur_opcode] (rec, offset, req, lockh);
2413 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
2416 upcall_cache_put_entry(mds->mds_group_hash, rec->ur_uc.luc_uce);