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_HA, "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);
95 CERROR("error cancelling %d log cookies: rc %d\n",
96 (int)(mlcd->mlcd_cookielen /
97 sizeof(*mlcd->mlcd_cookies)), rc);
100 OBD_FREE(mlcd, mlcd->mlcd_size);
103 /* Assumes caller has already pushed us into the kernel context. */
104 int mds_finish_transno(struct mds_obd *mds, struct inode *inode, void *handle,
105 struct ptlrpc_request *req, int rc, __u32 op_data)
107 struct mds_export_data *med = &req->rq_export->exp_mds_data;
108 struct mds_client_data *mcd = med->med_mcd;
109 struct obd_device *obd = req->rq_export->exp_obd;
110 __u64 transno, prev_transno;
116 if (IS_ERR(handle)) {
121 /* if the export has already been failed, we have no last_rcvd slot */
122 if (req->rq_export->exp_failed) {
123 CWARN("commit transaction for disconnected client %s: rc %d\n",
124 req->rq_export->exp_client_uuid.uuid, rc);
132 if (handle == NULL) {
133 /* if we're starting our own xaction, use our own inode */
134 inode = mds->mds_rcvd_filp->f_dentry->d_inode;
135 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
136 if (IS_ERR(handle)) {
137 CERROR("fsfilt_start: %ld\n", PTR_ERR(handle));
138 RETURN(PTR_ERR(handle));
142 off = med->med_lr_off;
144 transno = lustre_msg_get_transno(req->rq_reqmsg);
147 CERROR("%s: replay %s transno "LPU64" failed: rc %d\n",
149 libcfs_nid2str(req->rq_export->exp_connection->c_peer.nid),
153 } else if (transno == 0) {
154 spin_lock(&mds->mds_transno_lock);
155 transno = ++mds->mds_last_transno;
156 spin_unlock(&mds->mds_transno_lock);
158 spin_lock(&mds->mds_transno_lock);
159 if (transno > mds->mds_last_transno)
160 mds->mds_last_transno = transno;
161 spin_unlock(&mds->mds_transno_lock);
164 req->rq_transno = transno;
165 lustre_msg_set_transno(req->rq_repmsg, transno);
166 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
167 prev_transno = le64_to_cpu(mcd->mcd_last_close_transno);
168 mcd->mcd_last_close_transno = cpu_to_le64(transno);
169 mcd->mcd_last_close_xid = cpu_to_le64(req->rq_xid);
170 mcd->mcd_last_close_result = cpu_to_le32(rc);
171 mcd->mcd_last_close_data = cpu_to_le32(op_data);
173 prev_transno = le64_to_cpu(mcd->mcd_last_transno);
174 mcd->mcd_last_transno = cpu_to_le64(transno);
175 mcd->mcd_last_xid = cpu_to_le64(req->rq_xid);
176 mcd->mcd_last_result = cpu_to_le32(rc);
177 mcd->mcd_last_data = cpu_to_le32(op_data);
179 /* update the server data to not lose the greatest transno. Bug 11125 */
180 if ((transno == 0) && (prev_transno == mds->mds_last_transno))
181 mds_update_server_data(obd, 0);
184 CERROR("client idx %d has offset %lld\n", med->med_lr_idx, off);
187 fsfilt_add_journal_cb(req->rq_export->exp_obd, transno, handle,
188 mds_commit_cb, NULL);
189 err = fsfilt_write_record(obd, mds->mds_rcvd_filp, mcd,
191 req->rq_export->exp_need_sync);
200 DEBUG_REQ(log_pri, req,
201 "wrote trans #"LPU64" rc %d client %s at idx %u: err = %d",
202 transno, rc, mcd->mcd_uuid, med->med_lr_idx, err);
204 err = mds_lov_write_objids(obd);
210 CDEBUG(log_pri, "wrote objids: err = %d\n", err);
213 err = fsfilt_commit(obd, inode, handle, 0);
215 CERROR("error committing transaction: %d\n", err);
223 /* this gives the same functionality as the code between
224 * sys_chmod and inode_setattr
225 * chown_common and inode_setattr
226 * utimes and inode_setattr
228 int mds_fix_attr(struct inode *inode, struct mds_update_record *rec)
230 time_t now = CURRENT_SECONDS;
231 struct iattr *attr = &rec->ur_iattr;
232 unsigned int ia_valid = attr->ia_valid;
236 if (ia_valid & ATTR_RAW)
237 attr->ia_valid &= ~ATTR_RAW;
239 if (!(ia_valid & ATTR_CTIME_SET))
240 LTIME_S(attr->ia_ctime) = now;
242 attr->ia_valid &= ~ATTR_CTIME_SET;
243 if (!(ia_valid & ATTR_ATIME_SET))
244 LTIME_S(attr->ia_atime) = now;
245 if (!(ia_valid & ATTR_MTIME_SET))
246 LTIME_S(attr->ia_mtime) = now;
248 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
249 RETURN((attr->ia_valid & ~ATTR_ATTR_FLAG) ? -EPERM : 0);
252 if ((ia_valid & (ATTR_MTIME|ATTR_ATIME)) == (ATTR_MTIME|ATTR_ATIME)) {
253 if (current->fsuid != inode->i_uid &&
254 (error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
258 if (ia_valid & ATTR_SIZE &&
259 /* NFSD hack for open(O_CREAT|O_TRUNC)=mknod+truncate (bug 5781) */
260 !(rec->ur_uc.luc_fsuid == inode->i_uid &&
261 ia_valid & MDS_OPEN_OWNEROVERRIDE)) {
262 if ((error = ll_permission(inode, MAY_WRITE, NULL)) != 0)
266 if (ia_valid & (ATTR_UID | ATTR_GID)) {
269 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
271 if (attr->ia_uid == (uid_t) -1)
272 attr->ia_uid = inode->i_uid;
273 if (attr->ia_gid == (gid_t) -1)
274 attr->ia_gid = inode->i_gid;
275 if (!(ia_valid & ATTR_MODE))
276 attr->ia_mode = inode->i_mode;
278 * If the user or group of a non-directory has been
279 * changed by a non-root user, remove the setuid bit.
280 * 19981026 David C Niemi <niemi@tux.org>
282 * Changed this to apply to all users, including root,
283 * to avoid some races. This is the behavior we had in
284 * 2.0. The check for non-root was definitely wrong
285 * for 2.2 anyway, as it should have been using
286 * CAP_FSETID rather than fsuid -- 19990830 SD.
288 if ((inode->i_mode & S_ISUID) == S_ISUID &&
289 !S_ISDIR(inode->i_mode)) {
290 attr->ia_mode &= ~S_ISUID;
291 attr->ia_valid |= ATTR_MODE;
294 * Likewise, if the user or group of a non-directory
295 * has been changed by a non-root user, remove the
296 * setgid bit UNLESS there is no group execute bit
297 * (this would be a file marked for mandatory
298 * locking). 19981026 David C Niemi <niemi@tux.org>
300 * Removed the fsuid check (see the comment above) --
303 if (((inode->i_mode & (S_ISGID | S_IXGRP)) ==
304 (S_ISGID | S_IXGRP)) && !S_ISDIR(inode->i_mode)) {
305 attr->ia_mode &= ~S_ISGID;
306 attr->ia_valid |= ATTR_MODE;
308 } else if (ia_valid & ATTR_MODE) {
309 int mode = attr->ia_mode;
311 if (attr->ia_mode == (umode_t)-1)
312 mode = inode->i_mode;
314 (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
319 void mds_steal_ack_locks(struct ptlrpc_request *req)
321 struct obd_export *exp = req->rq_export;
322 struct list_head *tmp;
323 struct ptlrpc_reply_state *oldrep;
324 struct ptlrpc_service *svc;
327 /* CAVEAT EMPTOR: spinlock order */
328 spin_lock(&exp->exp_lock);
329 list_for_each (tmp, &exp->exp_outstanding_replies) {
330 oldrep = list_entry(tmp, struct ptlrpc_reply_state,rs_exp_list);
332 if (oldrep->rs_xid != req->rq_xid)
335 if (lustre_msg_get_opc(oldrep->rs_msg) !=
336 lustre_msg_get_opc(req->rq_reqmsg))
337 CERROR ("Resent req xid "LPX64" has mismatched opc: "
338 "new %d old %d\n", req->rq_xid,
339 lustre_msg_get_opc(req->rq_reqmsg),
340 lustre_msg_get_opc(oldrep->rs_msg));
342 svc = oldrep->rs_service;
343 spin_lock (&svc->srv_lock);
345 list_del_init (&oldrep->rs_exp_list);
347 CWARN("Stealing %d locks from rs %p x"LPD64".t"LPD64
349 oldrep->rs_nlocks, oldrep,
350 oldrep->rs_xid, oldrep->rs_transno,
351 lustre_msg_get_opc(oldrep->rs_msg),
352 libcfs_nid2str(exp->exp_connection->c_peer.nid));
354 for (i = 0; i < oldrep->rs_nlocks; i++)
355 ptlrpc_save_lock(req,
356 &oldrep->rs_locks[i],
357 oldrep->rs_modes[i]);
358 oldrep->rs_nlocks = 0;
360 DEBUG_REQ(D_HA, req, "stole locks for");
361 ptlrpc_schedule_difficult_reply (oldrep);
363 spin_unlock (&svc->srv_lock);
366 spin_unlock(&exp->exp_lock);
369 void mds_req_from_mcd(struct ptlrpc_request *req, struct mds_client_data *mcd)
371 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
372 req->rq_transno = le64_to_cpu(mcd->mcd_last_close_transno);
373 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
374 req->rq_status = le32_to_cpu(mcd->mcd_last_close_result);
375 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
377 req->rq_transno = le64_to_cpu(mcd->mcd_last_transno);
378 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
379 req->rq_status = le32_to_cpu(mcd->mcd_last_result);
380 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
382 DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
383 req->rq_transno, req->rq_status);
385 mds_steal_ack_locks(req);
388 static void reconstruct_reint_setattr(struct mds_update_record *rec,
389 int offset, struct ptlrpc_request *req)
391 struct mds_export_data *med = &req->rq_export->exp_mds_data;
392 struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
394 struct mds_body *body;
396 mds_req_from_mcd(req, med->med_mcd);
398 de = mds_fid2dentry(obd, rec->ur_fid1, NULL);
400 LASSERT(PTR_ERR(de) == req->rq_status);
404 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
405 mds_pack_inode2fid(&body->fid1, de->d_inode);
406 mds_pack_inode2body(body, de->d_inode);
408 /* Don't return OST-specific attributes if we didn't just set them */
409 if (rec->ur_iattr.ia_valid & ATTR_SIZE)
410 body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
411 if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
412 body->valid |= OBD_MD_FLMTIME;
413 if (rec->ur_iattr.ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
414 body->valid |= OBD_MD_FLATIME;
419 int mds_osc_setattr_async(struct obd_device *obd, struct inode *inode,
420 struct lov_mds_md *lmm, int lmm_size,
421 struct llog_cookie *logcookies, struct ll_fid *fid)
423 struct mds_obd *mds = &obd->u.mds;
424 struct obd_trans_info oti = { 0 };
425 struct obd_info oinfo = { { { 0 } } };
429 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OST_SETATTR))
432 /* first get memory EA */
433 oinfo.oi_oa = obdo_alloc();
439 rc = obd_unpackmd(mds->mds_osc_exp, &oinfo.oi_md, lmm, lmm_size);
441 CERROR("Error unpack md %p for inode %lu\n", lmm, inode->i_ino);
445 rc = obd_checkmd(mds->mds_osc_exp, obd->obd_self_export, oinfo.oi_md);
447 CERROR("Error revalidate lsm %p \n", oinfo.oi_md);
452 obdo_from_inode(oinfo.oi_oa, inode, OBD_MD_FLUID | OBD_MD_FLGID);
453 oinfo.oi_oa->o_valid |= OBD_MD_FLID;
454 oinfo.oi_oa->o_id = oinfo.oi_md->lsm_object_id;
456 oinfo.oi_oa->o_valid |= OBD_MD_FLCOOKIE;
457 oti.oti_logcookies = logcookies;
460 LASSERT(fid != NULL);
461 oinfo.oi_oa->o_fid = fid->id;
462 oinfo.oi_oa->o_generation = fid->generation;
463 oinfo.oi_oa->o_valid |= OBD_MD_FLFID | OBD_MD_FLGENER;
465 /* do async setattr from mds to ost not waiting for responses. */
466 rc = obd_setattr_async(mds->mds_osc_exp, &oinfo, &oti, NULL);
468 CDEBUG(D_INODE, "mds to ost setattr objid 0x"LPX64
469 " on ost error %d\n", oinfo.oi_md->lsm_object_id, rc);
472 obd_free_memmd(mds->mds_osc_exp, &oinfo.oi_md);
473 obdo_free(oinfo.oi_oa);
477 /* In the raw-setattr case, we lock the child inode.
478 * In the write-back case or if being called from open, the client holds a lock
481 * We use the ATTR_FROM_OPEN flag to tell these cases apart. */
482 static int mds_reint_setattr(struct mds_update_record *rec, int offset,
483 struct ptlrpc_request *req,
484 struct lustre_handle *lh)
486 unsigned int ia_valid = rec->ur_iattr.ia_valid;
487 struct mds_obd *mds = mds_req2mds(req);
488 struct obd_device *obd = req->rq_export->exp_obd;
489 struct mds_body *body;
491 struct inode *inode = NULL;
492 struct lustre_handle lockh;
494 struct mds_logcancel_data *mlcd = NULL;
495 struct lov_mds_md *lmm = NULL;
496 struct llog_cookie *logcookies = NULL;
497 int lmm_size = 0, need_lock = 1, cookie_size = 0;
498 int rc = 0, cleanup_phase = 0, err, locked = 0;
499 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
500 unsigned int qpids[MAXQUOTAS] = { rec->ur_iattr.ia_uid,
501 rec->ur_iattr.ia_gid };
504 LASSERT(offset == REQ_REC_OFF);
505 offset = REPLY_REC_OFF;
507 DEBUG_REQ(D_INODE, req, "setattr "LPU64"/%u %x", rec->ur_fid1->id,
508 rec->ur_fid1->generation, rec->ur_iattr.ia_valid);
509 OBD_COUNTER_INCREMENT(obd, setattr);
511 MDS_CHECK_RESENT(req, reconstruct_reint_setattr(rec, offset, req));
513 if (rec->ur_iattr.ia_valid & ATTR_FROM_OPEN ||
514 (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)) {
515 de = mds_fid2dentry(mds, rec->ur_fid1, NULL);
517 GOTO(cleanup, rc = PTR_ERR(de));
518 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
519 GOTO(cleanup, rc = -EROFS);
521 __u64 lockpart = MDS_INODELOCK_UPDATE;
522 if (rec->ur_iattr.ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID))
523 lockpart |= MDS_INODELOCK_LOOKUP;
525 de = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX,
526 &lockh, NULL, 0, lockpart);
528 GOTO(cleanup, rc = PTR_ERR(de));
536 if ((rec->ur_iattr.ia_valid & ATTR_FROM_OPEN) ||
537 (rec->ur_iattr.ia_valid & ATTR_SIZE)) {
538 /* Check write access for the O_TRUNC case */
539 if (mds_query_write_access(inode) < 0)
540 GOTO(cleanup, rc = -ETXTBSY);
543 /* save uid/gid for quota acq/rel */
544 qcids[USRQUOTA] = inode->i_uid;
545 qcids[GRPQUOTA] = inode->i_gid;
547 if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
548 rec->ur_eadata != NULL) {
549 LOCK_INODE_MUTEX(inode);
553 OBD_FAIL_WRITE(obd, OBD_FAIL_MDS_REINT_SETATTR_WRITE, inode->i_sb);
555 /* start a log jounal handle if needed */
556 if (S_ISREG(inode->i_mode) &&
557 rec->ur_iattr.ia_valid & (ATTR_UID | ATTR_GID)) {
558 lmm_size = mds->mds_max_mdsize;
559 OBD_ALLOC(lmm, lmm_size);
561 GOTO(cleanup, rc = -ENOMEM);
564 rc = mds_get_md(obd, inode, lmm, &lmm_size, need_lock);
569 handle = fsfilt_start_log(obd, inode, FSFILT_OP_SETATTR, NULL,
570 le32_to_cpu(lmm->lmm_stripe_count));
572 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
575 GOTO(cleanup, rc = PTR_ERR(handle));
577 if (rec->ur_iattr.ia_valid & (ATTR_MTIME | ATTR_CTIME))
578 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu\n",
579 LTIME_S(rec->ur_iattr.ia_mtime),
580 LTIME_S(rec->ur_iattr.ia_ctime));
581 rc = mds_fix_attr(inode, rec);
585 if (rec->ur_iattr.ia_valid & ATTR_ATTR_FLAG) { /* ioctl */
586 rc = fsfilt_iocontrol(obd, inode, NULL, EXT3_IOC_SETFLAGS,
587 (long)&rec->ur_flags);
588 } else if (rec->ur_iattr.ia_valid) { /* setattr */
589 rc = fsfilt_setattr(obd, de, handle, &rec->ur_iattr, 0);
590 /* journal chown/chgrp in llog, just like unlink */
591 if (rc == 0 && lmm_size){
592 cookie_size = mds_get_cookie_size(obd, lmm);
593 OBD_ALLOC(logcookies, cookie_size);
594 if (logcookies == NULL)
595 GOTO(cleanup, rc = -ENOMEM);
597 if (mds_log_op_setattr(obd, inode, lmm, lmm_size,
598 logcookies, cookie_size) <= 0) {
599 OBD_FREE(logcookies, cookie_size);
605 if (rc == 0 && (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
606 rec->ur_eadata != NULL) {
607 struct lov_stripe_md *lsm = NULL;
608 struct lov_user_md *lum = NULL;
610 rc = ll_permission(inode, MAY_WRITE, NULL);
614 lum = rec->ur_eadata;
615 /* if { size, offset, count } = { 0, -1, 0 } (i.e. all default
616 * values specified) then delete default striping from dir. */
617 if (S_ISDIR(inode->i_mode) &&
618 ((lum->lmm_stripe_size == 0 &&
619 lum->lmm_stripe_offset ==
620 (typeof(lum->lmm_stripe_offset))(-1) &&
621 lum->lmm_stripe_count == 0) ||
622 /* lmm_stripe_size == -1 is deprecated in 1.4.6 */
623 lum->lmm_stripe_size ==
624 (typeof(lum->lmm_stripe_size))(-1))){
625 rc = fsfilt_set_md(obd, inode, handle, NULL, 0, "lov");
629 rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
631 &lsm, rec->ur_eadata);
635 obd_free_memmd(mds->mds_osc_exp, &lsm);
637 rc = fsfilt_set_md(obd, inode, handle, rec->ur_eadata,
638 rec->ur_eadatalen, "lov");
644 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
645 mds_pack_inode2fid(&body->fid1, inode);
646 mds_pack_inode2body(body, inode);
648 /* don't return OST-specific attributes if we didn't just set them. */
649 if (ia_valid & ATTR_SIZE)
650 body->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
651 if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET))
652 body->valid |= OBD_MD_FLMTIME;
653 if (ia_valid & (ATTR_ATIME | ATTR_ATIME_SET))
654 body->valid |= OBD_MD_FLATIME;
656 if (rc == 0 && rec->ur_cookielen && !IS_ERR(mds->mds_osc_obd)) {
657 OBD_ALLOC(mlcd, sizeof(*mlcd) + rec->ur_cookielen +
660 mlcd->mlcd_size = sizeof(*mlcd) + rec->ur_cookielen +
662 mlcd->mlcd_eadatalen = rec->ur_eadatalen;
663 mlcd->mlcd_cookielen = rec->ur_cookielen;
664 mlcd->mlcd_lmm = (void *)&mlcd->mlcd_cookies +
665 mlcd->mlcd_cookielen;
666 memcpy(&mlcd->mlcd_cookies, rec->ur_logcookies,
667 mlcd->mlcd_cookielen);
668 memcpy(mlcd->mlcd_lmm, rec->ur_eadata,
669 mlcd->mlcd_eadatalen);
671 CERROR("unable to allocate log cancel data\n");
677 fsfilt_add_journal_cb(req->rq_export->exp_obd, 0, handle,
678 mds_cancel_cookies_cb, mlcd);
679 err = mds_finish_transno(mds, inode, handle, req, rc, 0);
680 /* do mds to ost setattr if needed */
681 if (!rc && !err && lmm_size)
682 mds_osc_setattr_async(obd, inode, lmm, lmm_size,
683 logcookies, rec->ur_fid1);
685 switch (cleanup_phase) {
687 OBD_FREE(lmm, mds->mds_max_mdsize);
689 OBD_FREE(logcookies, cookie_size);
691 if ((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) &&
692 rec->ur_eadata != NULL)
693 UNLOCK_INODE_MUTEX(inode);
697 ldlm_lock_decref(&lockh, LCK_EX);
699 ptlrpc_save_lock (req, &lockh, LCK_EX);
712 /* trigger dqrel/dqacq for original owner and new owner */
713 if (ia_valid & (ATTR_UID | ATTR_GID))
714 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
720 static void reconstruct_reint_create(struct mds_update_record *rec, int offset,
721 struct ptlrpc_request *req)
723 struct mds_export_data *med = &req->rq_export->exp_mds_data;
724 struct mds_obd *obd = &req->rq_export->exp_obd->u.mds;
725 struct dentry *parent, *child;
726 struct mds_body *body;
728 mds_req_from_mcd(req, med->med_mcd);
733 parent = mds_fid2dentry(obd, rec->ur_fid1, NULL);
734 LASSERT(!IS_ERR(parent));
735 child = ll_lookup_one_len(rec->ur_name, parent, rec->ur_namelen - 1);
736 LASSERT(!IS_ERR(child));
738 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
739 mds_pack_inode2fid(&body->fid1, child->d_inode);
740 mds_pack_inode2body(body, child->d_inode);
746 static int mds_reint_create(struct mds_update_record *rec, int offset,
747 struct ptlrpc_request *req,
748 struct lustre_handle *lh)
750 struct dentry *dparent = NULL;
751 struct mds_obd *mds = mds_req2mds(req);
752 struct obd_device *obd = req->rq_export->exp_obd;
753 struct dentry *dchild = NULL;
754 struct inode *dir = NULL;
756 struct lustre_handle lockh;
757 int rc = 0, err, type = rec->ur_mode & S_IFMT, cleanup_phase = 0;
759 unsigned int qcids[MAXQUOTAS] = { current->fsuid, current->fsgid };
760 unsigned int qpids[MAXQUOTAS] = { 0, 0 };
761 struct lvfs_dentry_params dp = LVFS_DENTRY_PARAMS_INIT;
764 LASSERT(offset == REQ_REC_OFF);
765 offset = REPLY_REC_OFF;
767 LASSERT(!strcmp(req->rq_export->exp_obd->obd_type->typ_name,
770 DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u name %s mode %o",
771 rec->ur_fid1->id, rec->ur_fid1->generation,
772 rec->ur_name, rec->ur_mode);
774 MDS_CHECK_RESENT(req, reconstruct_reint_create(rec, offset, req));
776 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_CREATE))
777 GOTO(cleanup, rc = -ESTALE);
779 dparent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, LCK_EX, &lockh,
780 rec->ur_name, rec->ur_namelen - 1,
781 MDS_INODELOCK_UPDATE);
782 if (IS_ERR(dparent)) {
783 rc = PTR_ERR(dparent);
785 CERROR("parent "LPU64"/%u lookup error %d\n",
786 rec->ur_fid1->id, rec->ur_fid1->generation, rc);
789 cleanup_phase = 1; /* locked parent dentry */
790 dir = dparent->d_inode;
793 ldlm_lock_dump_handle(D_OTHER, &lockh);
795 dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
796 if (IS_ERR(dchild)) {
797 rc = PTR_ERR(dchild);
798 if (rc != -ENAMETOOLONG)
799 CERROR("child lookup error %d\n", rc);
803 cleanup_phase = 2; /* child dentry */
805 OBD_FAIL_WRITE(obd, OBD_FAIL_MDS_REINT_CREATE_WRITE, dir->i_sb);
807 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY) {
809 GOTO(cleanup, rc = -EEXIST);
810 GOTO(cleanup, rc = -EROFS);
813 if (dir->i_mode & S_ISGID && S_ISDIR(rec->ur_mode))
814 rec->ur_mode |= S_ISGID;
816 dchild->d_fsdata = (void *)&dp;
817 dp.ldp_inum = (unsigned long)rec->ur_fid2->id;
822 handle = fsfilt_start(obd, dir, FSFILT_OP_CREATE, NULL);
824 GOTO(cleanup, rc = PTR_ERR(handle));
825 rc = ll_vfs_create(dir, dchild, rec->ur_mode, NULL);
826 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
831 handle = fsfilt_start(obd, dir, FSFILT_OP_MKDIR, NULL);
833 GOTO(cleanup, rc = PTR_ERR(handle));
834 rc = vfs_mkdir(dir, dchild, rec->ur_mode);
835 mds_counter_incr(req->rq_export, LPROC_MDS_MKDIR);
840 handle = fsfilt_start(obd, dir, FSFILT_OP_SYMLINK, NULL);
842 GOTO(cleanup, rc = PTR_ERR(handle));
843 if (rec->ur_tgt == NULL) /* no target supplied */
844 rc = -EINVAL; /* -EPROTO? */
846 rc = ll_vfs_symlink(dir, dchild, rec->ur_tgt, S_IALLUGO);
847 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
855 int rdev = rec->ur_rdev;
856 handle = fsfilt_start(obd, dir, FSFILT_OP_MKNOD, NULL);
858 GOTO(cleanup, rc = PTR_ERR(handle));
859 rc = vfs_mknod(dir, dchild, rec->ur_mode, rdev);
860 mds_counter_incr(req->rq_export, LPROC_MDS_MKNOD);
865 CERROR("bad file type %o creating %s\n", type, rec->ur_name);
866 dchild->d_fsdata = NULL;
867 GOTO(cleanup, rc = -EINVAL);
870 /* In case we stored the desired inum in here, we want to clean up. */
871 if (dchild->d_fsdata == (void *)(unsigned long)rec->ur_fid2->id)
872 dchild->d_fsdata = NULL;
875 CDEBUG(D_INODE, "error during create: %d\n", rc);
879 struct inode *inode = dchild->d_inode;
880 struct mds_body *body;
883 LTIME_S(iattr.ia_atime) = rec->ur_time;
884 LTIME_S(iattr.ia_ctime) = rec->ur_time;
885 LTIME_S(iattr.ia_mtime) = rec->ur_time;
886 iattr.ia_uid = current->fsuid; /* set by push_ctxt already */
887 if (dir->i_mode & S_ISGID)
888 iattr.ia_gid = dir->i_gid;
890 iattr.ia_gid = current->fsgid;
891 iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
892 ATTR_MTIME | ATTR_CTIME;
894 if (rec->ur_fid2->id) {
895 LASSERT(rec->ur_fid2->id == inode->i_ino);
896 inode->i_generation = rec->ur_fid2->generation;
897 /* Dirtied and committed by the upcoming setattr. */
898 CDEBUG(D_INODE, "recreated ino %lu with gen %u\n",
899 inode->i_ino, inode->i_generation);
901 CDEBUG(D_INODE, "created ino %lu with gen %x\n",
902 inode->i_ino, inode->i_generation);
905 rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
907 CERROR("error on child setattr: rc = %d\n", rc);
909 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
910 rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
912 CERROR("error on parent setattr: rc = %d\n", rc);
914 if (S_ISDIR(inode->i_mode)) {
915 struct lov_mds_md lmm;
916 int lmm_size = sizeof(lmm);
917 rc = mds_get_md(obd, dir, &lmm, &lmm_size, 1);
919 LOCK_INODE_MUTEX(inode);
920 rc = fsfilt_set_md(obd, inode, handle,
921 &lmm, lmm_size, "lov");
922 UNLOCK_INODE_MUTEX(inode);
925 CERROR("error on copy stripe info: rc = %d\n",
929 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
930 mds_pack_inode2fid(&body->fid1, inode);
931 mds_pack_inode2body(body, inode);
936 err = mds_finish_transno(mds, dir, handle, req, rc, 0);
939 /* Destroy the file we just created. This should not need
940 * extra journal credits, as we have already modified all of
941 * the blocks needed in order to create the file in the first
946 err = vfs_rmdir(dir, dchild);
948 CERROR("rmdir in error path: %d\n", err);
951 err = vfs_unlink(dir, dchild);
953 CERROR("unlink in error path: %d\n", err);
956 } else if (created) {
957 /* The inode we were allocated may have just been freed
958 * by an unlink operation. We take this lock to
959 * synchronize against the matching reply-ack-lock taken
960 * in unlink, to avoid replay problems if this reply
961 * makes it out to the client but the unlink's does not.
962 * See bug 2029 for more detail.*/
963 mds_lock_new_child(obd, dchild->d_inode, NULL);
964 /* save uid/gid of create inode and parent */
965 qpids[USRQUOTA] = dir->i_uid;
966 qpids[GRPQUOTA] = dir->i_gid;
971 switch (cleanup_phase) {
972 case 2: /* child dentry */
974 case 1: /* locked parent dentry */
976 ldlm_lock_decref(&lockh, LCK_EX);
978 ptlrpc_save_lock (req, &lockh, LCK_EX);
984 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
989 /* trigger dqacq on the owner of child and parent */
990 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
995 int res_gt(struct ldlm_res_id *res1, struct ldlm_res_id *res2,
996 ldlm_policy_data_t *p1, ldlm_policy_data_t *p2)
1000 for (i = 0; i < RES_NAME_SIZE; i++) {
1001 /* return 1 here, because enqueue_ordered will skip resources
1002 * of all zeroes if they're sorted to the end of the list. */
1003 if (res1->name[i] == 0 && res2->name[i] != 0)
1005 if (res2->name[i] == 0 && res1->name[i] != 0)
1008 if (res1->name[i] > res2->name[i])
1010 if (res1->name[i] < res2->name[i])
1015 if (memcmp(p1, p2, sizeof(*p1)) < 0)
1020 /* This function doesn't use ldlm_match_or_enqueue because we're always called
1021 * with EX or PW locks, and the MDS is no longer allowed to match write locks,
1022 * because they take the place of local semaphores.
1024 * One or two locks are taken in numerical order. A res_id->name[0] of 0 means
1025 * no lock is taken for that res_id. Must be at least one non-zero res_id. */
1026 int enqueue_ordered_locks(struct obd_device *obd, struct ldlm_res_id *p1_res_id,
1027 struct lustre_handle *p1_lockh, int p1_lock_mode,
1028 ldlm_policy_data_t *p1_policy,
1029 struct ldlm_res_id *p2_res_id,
1030 struct lustre_handle *p2_lockh, int p2_lock_mode,
1031 ldlm_policy_data_t *p2_policy)
1033 struct ldlm_res_id *res_id[2] = { p1_res_id, p2_res_id };
1034 struct lustre_handle *handles[2] = { p1_lockh, p2_lockh };
1035 int lock_modes[2] = { p1_lock_mode, p2_lock_mode };
1036 ldlm_policy_data_t *policies[2] = {p1_policy, p2_policy};
1040 LASSERT(p1_res_id != NULL && p2_res_id != NULL);
1042 CDEBUG(D_INFO, "locks before: "LPU64"/"LPU64"\n",
1043 res_id[0]->name[0], res_id[1]->name[0]);
1045 if (res_gt(p1_res_id, p2_res_id, p1_policy, p2_policy)) {
1046 handles[1] = p1_lockh;
1047 handles[0] = p2_lockh;
1048 res_id[1] = p1_res_id;
1049 res_id[0] = p2_res_id;
1050 lock_modes[1] = p1_lock_mode;
1051 lock_modes[0] = p2_lock_mode;
1052 policies[1] = p1_policy;
1053 policies[0] = p2_policy;
1056 CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"\n",
1057 res_id[0]->name[0], res_id[1]->name[0]);
1059 flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1060 rc = ldlm_cli_enqueue_local(obd->obd_namespace, *res_id[0],
1061 LDLM_IBITS, policies[0], lock_modes[0],
1062 &flags, ldlm_blocking_ast,
1063 ldlm_completion_ast, NULL, NULL, 0,
1067 ldlm_lock_dump_handle(D_OTHER, handles[0]);
1069 if (memcmp(res_id[0], res_id[1], sizeof(*res_id[0])) == 0 &&
1070 (policies[0]->l_inodebits.bits & policies[1]->l_inodebits.bits)) {
1071 memcpy(handles[1], handles[0], sizeof(*(handles[1])));
1072 ldlm_lock_addref(handles[1], lock_modes[1]);
1073 } else if (res_id[1]->name[0] != 0) {
1074 flags = LDLM_FL_LOCAL_ONLY | LDLM_FL_ATOMIC_CB;
1075 rc = ldlm_cli_enqueue_local(obd->obd_namespace, *res_id[1],
1076 LDLM_IBITS, policies[1],
1077 lock_modes[1], &flags,
1079 ldlm_completion_ast, NULL, NULL,
1080 0, NULL, handles[1]);
1081 if (rc != ELDLM_OK) {
1082 ldlm_lock_decref(handles[0], lock_modes[0]);
1085 ldlm_lock_dump_handle(D_OTHER, handles[1]);
1091 static inline int res_eq(struct ldlm_res_id *res1, struct ldlm_res_id *res2)
1093 return !memcmp(res1, res2, sizeof(*res1));
1097 try_to_aggregate_locks(struct ldlm_res_id *res1, ldlm_policy_data_t *p1,
1098 struct ldlm_res_id *res2, ldlm_policy_data_t *p2)
1100 if (!res_eq(res1, res2))
1102 /* XXX: any additional inodebits (to current LOOKUP and UPDATE)
1103 * should be taken with great care here */
1104 p1->l_inodebits.bits |= p2->l_inodebits.bits;
1107 int enqueue_4ordered_locks(struct obd_device *obd,struct ldlm_res_id *p1_res_id,
1108 struct lustre_handle *p1_lockh, int p1_lock_mode,
1109 ldlm_policy_data_t *p1_policy,
1110 struct ldlm_res_id *p2_res_id,
1111 struct lustre_handle *p2_lockh, int p2_lock_mode,
1112 ldlm_policy_data_t *p2_policy,
1113 struct ldlm_res_id *c1_res_id,
1114 struct lustre_handle *c1_lockh, int c1_lock_mode,
1115 ldlm_policy_data_t *c1_policy,
1116 struct ldlm_res_id *c2_res_id,
1117 struct lustre_handle *c2_lockh, int c2_lock_mode,
1118 ldlm_policy_data_t *c2_policy)
1120 struct ldlm_res_id *res_id[5] = { p1_res_id, p2_res_id,
1121 c1_res_id, c2_res_id };
1122 struct lustre_handle *dlm_handles[5] = { p1_lockh, p2_lockh,
1123 c1_lockh, c2_lockh };
1124 int lock_modes[5] = { p1_lock_mode, p2_lock_mode,
1125 c1_lock_mode, c2_lock_mode };
1126 ldlm_policy_data_t *policies[5] = {p1_policy, p2_policy,
1127 c1_policy, c2_policy};
1128 int rc, i, j, sorted, flags;
1131 CDEBUG(D_DLMTRACE, "locks before: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
1132 res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
1133 res_id[3]->name[0]);
1135 /* simple insertion sort - we have at most 4 elements */
1136 for (i = 1; i < 4; i++) {
1138 dlm_handles[4] = dlm_handles[i];
1139 res_id[4] = res_id[i];
1140 lock_modes[4] = lock_modes[i];
1141 policies[4] = policies[i];
1145 if (res_gt(res_id[j], res_id[4], policies[j],
1147 dlm_handles[j + 1] = dlm_handles[j];
1148 res_id[j + 1] = res_id[j];
1149 lock_modes[j + 1] = lock_modes[j];
1150 policies[j + 1] = policies[j];
1155 } while (j >= 0 && !sorted);
1157 dlm_handles[j + 1] = dlm_handles[4];
1158 res_id[j + 1] = res_id[4];
1159 lock_modes[j + 1] = lock_modes[4];
1160 policies[j + 1] = policies[4];
1163 CDEBUG(D_DLMTRACE, "lock order: "LPU64"/"LPU64"/"LPU64"/"LPU64"\n",
1164 res_id[0]->name[0], res_id[1]->name[0], res_id[2]->name[0],
1165 res_id[3]->name[0]);
1167 /* XXX we could send ASTs on all these locks first before blocking? */
1168 for (i = 0; i < 4; i++) {
1169 flags = LDLM_FL_ATOMIC_CB;
1170 if (res_id[i]->name[0] == 0)
1172 if (i && res_eq(res_id[i], res_id[i-1])) {
1173 memcpy(dlm_handles[i], dlm_handles[i-1],
1174 sizeof(*(dlm_handles[i])));
1175 ldlm_lock_addref(dlm_handles[i], lock_modes[i]);
1177 /* we need to enqueue locks with different inodebits
1178 * at once, because otherwise concurrent thread can
1179 * hit the windown between these two locks and we'll
1180 * get to deadlock. see bug 10360. note also, that it
1181 * is impossible to have >2 equal res. */
1183 try_to_aggregate_locks(res_id[i], policies[i],
1184 res_id[i+1], policies[i+1]);
1185 rc = ldlm_cli_enqueue_local(obd->obd_namespace,
1186 *res_id[i], LDLM_IBITS,
1187 policies[i], lock_modes[i],
1188 &flags, ldlm_blocking_ast,
1189 ldlm_completion_ast, NULL,
1193 GOTO(out_err, rc = -EIO);
1194 ldlm_lock_dump_handle(D_OTHER, dlm_handles[i]);
1201 ldlm_lock_decref(dlm_handles[i], lock_modes[i]);
1206 /* In the unlikely case that the child changed while we were waiting
1207 * on the lock, we need to drop the lock on the old child and either:
1208 * - if the child has a lower resource name, then we have to also
1209 * drop the parent lock and regain the locks in the right order
1210 * - in the rename case, if the child has a lower resource name than one of
1211 * the other parent/child resources (maxres) we also need to reget the locks
1212 * - if the child has a higher resource name (this is the common case)
1213 * we can just get the lock on the new child (still in lock order)
1215 * Returns 0 if the child did not change or if it changed but could be locked.
1216 * Returns 1 if the child changed and we need to re-lock (no locks held).
1217 * Returns -ve error with a valid dchild (no locks held). */
1218 static int mds_verify_child(struct obd_device *obd,
1219 struct ldlm_res_id *parent_res_id,
1220 struct lustre_handle *parent_lockh,
1221 struct dentry *dparent, int parent_mode,
1222 struct ldlm_res_id *child_res_id,
1223 struct lustre_handle *child_lockh,
1224 struct dentry **dchildp, int child_mode,
1225 ldlm_policy_data_t *child_policy,
1226 const char *name, int namelen,
1227 struct ldlm_res_id *maxres)
1229 struct dentry *vchild, *dchild = *dchildp;
1230 int rc = 0, cleanup_phase = 2; /* parent, child locks */
1233 vchild = ll_lookup_one_len(name, dparent, namelen - 1);
1235 GOTO(cleanup, rc = PTR_ERR(vchild));
1237 if (likely((vchild->d_inode == NULL && child_res_id->name[0] == 0) ||
1238 (vchild->d_inode != NULL &&
1239 child_res_id->name[0] == vchild->d_inode->i_ino &&
1240 child_res_id->name[1] == vchild->d_inode->i_generation))) {
1248 CDEBUG(D_DLMTRACE, "child inode changed: %p != %p (%lu != "LPU64")\n",
1249 vchild->d_inode, dchild ? dchild->d_inode : 0,
1250 vchild->d_inode ? vchild->d_inode->i_ino : 0,
1251 child_res_id->name[0]);
1252 if (child_res_id->name[0] != 0)
1253 ldlm_lock_decref(child_lockh, child_mode);
1257 cleanup_phase = 1; /* parent lock only */
1258 *dchildp = dchild = vchild;
1260 if (dchild->d_inode) {
1261 int flags = LDLM_FL_ATOMIC_CB;
1262 child_res_id->name[0] = dchild->d_inode->i_ino;
1263 child_res_id->name[1] = dchild->d_inode->i_generation;
1265 /* Make sure that we don't try to re-enqueue a lock on the
1266 * same resource if it happens that the source is renamed to
1267 * the target by another thread (bug 9974, thanks racer :-) */
1268 if (!res_gt(child_res_id, parent_res_id, NULL, NULL) ||
1269 !res_gt(child_res_id, maxres, NULL, NULL)) {
1270 CDEBUG(D_DLMTRACE, "relock "LPU64"<("LPU64"|"LPU64")\n",
1271 child_res_id->name[0], parent_res_id->name[0],
1273 GOTO(cleanup, rc = 1);
1276 rc = ldlm_cli_enqueue_local(obd->obd_namespace, *child_res_id,
1277 LDLM_IBITS, child_policy,
1280 ldlm_completion_ast, NULL,
1281 NULL, 0, NULL, child_lockh);
1283 GOTO(cleanup, rc = -EIO);
1285 memset(child_res_id, 0, sizeof(*child_res_id));
1291 switch(cleanup_phase) {
1293 if (child_res_id->name[0] != 0)
1294 ldlm_lock_decref(child_lockh, child_mode);
1296 ldlm_lock_decref(parent_lockh, parent_mode);
1302 #define INODE_CTIME_AGE (10)
1303 #define INODE_CTIME_OLD(inode) (LTIME_S(inode->i_ctime) + \
1304 INODE_CTIME_AGE < CURRENT_SECONDS)
1306 int mds_get_parent_child_locked(struct obd_device *obd, struct mds_obd *mds,
1308 struct lustre_handle *parent_lockh,
1309 struct dentry **dparentp, int parent_mode,
1310 __u64 parent_lockpart,
1311 char *name, int namelen,
1312 struct lustre_handle *child_lockh,
1313 struct dentry **dchildp, int child_mode,
1314 __u64 child_lockpart)
1316 struct ldlm_res_id child_res_id = { .name = {0} };
1317 struct ldlm_res_id parent_res_id = { .name = {0} };
1318 ldlm_policy_data_t parent_policy = {.l_inodebits = { parent_lockpart }};
1319 ldlm_policy_data_t child_policy = {.l_inodebits = { child_lockpart }};
1320 struct inode *inode;
1321 int rc = 0, cleanup_phase = 0;
1324 /* Step 1: Lookup parent */
1325 *dparentp = mds_fid2dentry(mds, fid, NULL);
1326 if (IS_ERR(*dparentp)) {
1327 rc = PTR_ERR(*dparentp);
1332 CDEBUG(D_INODE, "parent ino %lu, name %s\n",
1333 (*dparentp)->d_inode->i_ino, name);
1335 parent_res_id.name[0] = (*dparentp)->d_inode->i_ino;
1336 parent_res_id.name[1] = (*dparentp)->d_inode->i_generation;
1338 cleanup_phase = 1; /* parent dentry */
1340 /* Step 2: Lookup child (without DLM lock, to get resource name) */
1341 *dchildp = ll_lookup_one_len(name, *dparentp, namelen - 1);
1342 if (IS_ERR(*dchildp)) {
1343 rc = PTR_ERR(*dchildp);
1344 CDEBUG(D_INODE, "child lookup error %d\n", rc);
1348 cleanup_phase = 2; /* child dentry */
1349 inode = (*dchildp)->d_inode;
1350 if (inode != NULL) {
1351 if (is_bad_inode(inode)) {
1352 CERROR("bad inode returned %lu/%u\n",
1353 inode->i_ino, inode->i_generation);
1354 GOTO(cleanup, rc = -ENOENT);
1356 inode = igrab(inode);
1361 child_res_id.name[0] = inode->i_ino;
1362 child_res_id.name[1] = inode->i_generation;
1364 /* If we want a LCK_CR for a directory, and this directory has not been
1365 changed for some time, we return not only a LOOKUP lock, but also an
1366 UPDATE lock to have negative dentry starts working for this dir.
1367 Also we apply same logic to non-directories. If the file is rarely
1368 changed - we return both locks and this might save us RPC on
1370 if ((child_mode & (LCK_CR|LCK_PR|LCK_CW)) && INODE_CTIME_OLD(inode))
1371 child_policy.l_inodebits.bits |= MDS_INODELOCK_UPDATE;
1376 cleanup_phase = 2; /* child dentry */
1378 /* Step 3: Lock parent and child in resource order. If child doesn't
1379 * exist, we still have to lock the parent and re-lookup. */
1380 rc = enqueue_ordered_locks(obd,&parent_res_id,parent_lockh,parent_mode,
1382 &child_res_id, child_lockh, child_mode,
1387 if (!(*dchildp)->d_inode)
1388 cleanup_phase = 3; /* parent lock */
1390 cleanup_phase = 4; /* child lock */
1392 /* Step 4: Re-lookup child to verify it hasn't changed since locking */
1393 rc = mds_verify_child(obd, &parent_res_id, parent_lockh, *dparentp,
1394 parent_mode, &child_res_id, child_lockh, dchildp,
1395 child_mode,&child_policy, name, namelen, &parent_res_id);
1405 switch (cleanup_phase) {
1407 ldlm_lock_decref(child_lockh, child_mode);
1409 ldlm_lock_decref(parent_lockh, parent_mode);
1420 void mds_reconstruct_generic(struct ptlrpc_request *req)
1422 struct mds_export_data *med = &req->rq_export->exp_mds_data;
1424 mds_req_from_mcd(req, med->med_mcd);
1427 /* If we are unlinking an open file/dir (i.e. creating an orphan) then
1428 * we instead link the inode into the PENDING directory until it is
1429 * finally released. We can't simply call mds_reint_rename() or some
1430 * part thereof, because we don't have the inode to check for link
1431 * count/open status until after it is locked.
1433 * For lock ordering, caller must get child->i_mutex first, then
1434 * pending->i_mutex before starting journal transaction.
1436 * returns 1 on success
1437 * returns 0 if we lost a race and didn't make a new link
1438 * returns negative on error
1440 static int mds_orphan_add_link(struct mds_update_record *rec,
1441 struct obd_device *obd, struct dentry *dentry)
1443 struct mds_obd *mds = &obd->u.mds;
1444 struct inode *pending_dir = mds->mds_pending_dir->d_inode;
1445 struct inode *inode = dentry->d_inode;
1446 struct dentry *pending_child;
1447 char fidname[LL_FID_NAMELEN];
1448 int fidlen = 0, rc, mode;
1451 LASSERT(inode != NULL);
1452 LASSERT(!mds_inode_is_orphan(inode));
1453 #ifndef HAVE_I_ALLOC_SEM
1454 LASSERT(TRYLOCK_INODE_MUTEX(inode) == 0);
1456 LASSERT(TRYLOCK_INODE_MUTEX(pending_dir) == 0);
1458 fidlen = ll_fid2str(fidname, inode->i_ino, inode->i_generation);
1460 CDEBUG(D_INODE, "pending destroy of %dx open %d linked %s %s = %s\n",
1461 mds_orphan_open_count(inode), inode->i_nlink,
1462 S_ISDIR(inode->i_mode) ? "dir" :
1463 S_ISREG(inode->i_mode) ? "file" : "other",rec->ur_name,fidname);
1465 if (mds_orphan_open_count(inode) == 0 || inode->i_nlink != 0)
1468 pending_child = lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
1469 if (IS_ERR(pending_child))
1470 RETURN(PTR_ERR(pending_child));
1472 if (pending_child->d_inode != NULL) {
1473 CERROR("re-destroying orphan file %s?\n", rec->ur_name);
1474 LASSERT(pending_child->d_inode == inode);
1475 GOTO(out_dput, rc = 0);
1478 /* link() is semanticaly-wrong for S_IFDIR, so we set S_IFREG
1479 * for linking and return real mode back then -bzzz */
1480 mode = inode->i_mode;
1481 inode->i_mode = S_IFREG;
1482 rc = vfs_link(dentry, pending_dir, pending_child);
1484 CERROR("error linking orphan %s to PENDING: rc = %d\n",
1487 mds_inode_set_orphan(inode);
1489 /* return mode and correct i_nlink if inode is directory */
1490 inode->i_mode = mode;
1491 LASSERTF(inode->i_nlink == 1, "%s nlink == %d\n",
1492 S_ISDIR(mode) ? "dir" : S_ISREG(mode) ? "file" : "other",
1494 if (S_ISDIR(mode)) {
1496 pending_dir->i_nlink++;
1497 mark_inode_dirty(inode);
1498 mark_inode_dirty(pending_dir);
1501 GOTO(out_dput, rc = 1);
1503 l_dput(pending_child);
1507 int mds_get_cookie_size(struct obd_device *obd, struct lov_mds_md *lmm)
1509 int count = le32_to_cpu(lmm->lmm_stripe_count);
1510 int real_csize = count * sizeof(struct llog_cookie);
1514 void mds_shrink_reply(struct obd_device *obd, struct ptlrpc_request *req,
1515 struct mds_body *body, int md_off)
1517 int cookie_size = 0, md_size = 0;
1519 if (body && body->valid & OBD_MD_FLEASIZE) {
1520 md_size = body->eadatasize;
1522 if (body && body->valid & OBD_MD_FLCOOKIE) {
1523 LASSERT(body->valid & OBD_MD_FLEASIZE);
1524 cookie_size = mds_get_cookie_size(obd, lustre_msg_buf(
1525 req->rq_repmsg, md_off, 0));
1528 CDEBUG(D_INFO, "Shrink to md_size %d cookie_size %d \n", md_size,
1531 lustre_shrink_reply(req, md_off, md_size, 1);
1533 lustre_shrink_reply(req, md_off + (md_size > 0), cookie_size, 0);
1536 static int mds_reint_unlink(struct mds_update_record *rec, int offset,
1537 struct ptlrpc_request *req,
1538 struct lustre_handle *lh)
1540 struct dentry *dparent = NULL, *dchild;
1541 struct mds_obd *mds = mds_req2mds(req);
1542 struct obd_device *obd = req->rq_export->exp_obd;
1543 struct mds_body *body = NULL;
1544 struct inode *child_inode = NULL;
1545 struct lustre_handle parent_lockh, child_lockh, child_reuse_lockh;
1546 void *handle = NULL;
1547 int rc = 0, cleanup_phase = 0;
1548 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
1549 unsigned int qpids[MAXQUOTAS] = { 0, 0 };
1552 LASSERT(offset == REQ_REC_OFF); /* || offset == DLM_INTENT_REC_OFF); */
1553 offset = REPLY_REC_OFF;
1555 DEBUG_REQ(D_INODE, req, "parent ino "LPU64"/%u, child %s",
1556 rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name);
1558 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1560 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_UNLINK))
1561 GOTO(cleanup, rc = -ENOENT);
1563 rc = mds_get_parent_child_locked(obd, mds, rec->ur_fid1,
1564 &parent_lockh, &dparent, LCK_EX,
1565 MDS_INODELOCK_UPDATE,
1566 rec->ur_name, rec->ur_namelen,
1567 &child_lockh, &dchild, LCK_EX,
1568 MDS_INODELOCK_FULL);
1572 cleanup_phase = 1; /* dchild, dparent, locks */
1575 child_inode = dchild->d_inode;
1576 if (child_inode == NULL) {
1577 CDEBUG(D_INODE, "child doesn't exist (dir %lu, name %s)\n",
1578 dparent->d_inode->i_ino, rec->ur_name);
1579 GOTO(cleanup, rc = -ENOENT);
1582 /* save uid/gid for quota acquire/release */
1583 qcids[USRQUOTA] = child_inode->i_uid;
1584 qcids[GRPQUOTA] = child_inode->i_gid;
1585 qpids[USRQUOTA] = dparent->d_inode->i_uid;
1586 qpids[GRPQUOTA] = dparent->d_inode->i_gid;
1588 cleanup_phase = 2; /* dchild has a lock */
1590 /* We have to do these checks ourselves, in case we are making an
1591 * orphan. The client tells us whether rmdir() or unlink() was called,
1592 * so we need to return appropriate errors (bug 72). */
1593 if ((rec->ur_mode & S_IFMT) == S_IFDIR) {
1594 if (!S_ISDIR(child_inode->i_mode))
1595 GOTO(cleanup, rc = -ENOTDIR);
1597 if (S_ISDIR(child_inode->i_mode))
1598 GOTO(cleanup, rc = -EISDIR);
1601 /* Check for EROFS after we check ENODENT, ENOTDIR, and EISDIR */
1602 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
1603 GOTO(cleanup, rc = -EROFS);
1605 /* Step 3: Get a lock on the ino to sync with creation WRT inode
1606 * reuse (see bug 2029). */
1607 rc = mds_lock_new_child(obd, child_inode, &child_reuse_lockh);
1611 cleanup_phase = 3; /* child inum lock */
1613 OBD_FAIL_WRITE(obd, OBD_FAIL_MDS_REINT_UNLINK_WRITE, dparent->d_inode->i_sb);
1615 /* ldlm_reply in buf[0] if called via intent */
1616 if (offset == DLM_INTENT_REC_OFF)
1617 offset = DLM_REPLY_REC_OFF;
1619 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
1620 LASSERT(body != NULL);
1622 /* child orphan sem protects orphan_dec_test && is_orphan race */
1623 MDS_DOWN_READ_ORPHAN_SEM(child_inode);
1624 cleanup_phase = 4; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
1626 /* If this is potentially the last reference to this inode, get the
1627 * OBD EA data first so the client can destroy OST objects. We
1628 * only do the object removal later if no open files/links remain. */
1629 if ((S_ISDIR(child_inode->i_mode) && child_inode->i_nlink == 2) ||
1630 child_inode->i_nlink == 1) {
1631 if (mds_orphan_open_count(child_inode) > 0) {
1632 /* need to lock pending_dir before transaction */
1633 LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
1634 cleanup_phase = 5; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
1635 } else if (S_ISREG(child_inode->i_mode)) {
1636 mds_pack_inode2fid(&body->fid1, child_inode);
1637 mds_pack_inode2body(body, child_inode);
1638 mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
1639 child_inode, MDS_PACK_MD_LOCK);
1643 /* Step 4: Do the unlink: we already verified ur_mode above (bug 72) */
1644 switch (child_inode->i_mode & S_IFMT) {
1646 /* Drop any lingering child directories before we start our
1647 * transaction, to avoid doing multiple inode dirty/delete
1648 * in our compound transaction (bug 1321). */
1649 shrink_dcache_parent(dchild);
1650 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_RMDIR,
1653 GOTO(cleanup, rc = PTR_ERR(handle));
1654 rc = vfs_rmdir(dparent->d_inode, dchild);
1655 mds_counter_incr(req->rq_export, LPROC_MDS_RMDIR);
1658 struct lov_mds_md *lmm = lustre_msg_buf(req->rq_repmsg,
1660 handle = fsfilt_start_log(obd, dparent->d_inode,
1661 FSFILT_OP_UNLINK, NULL,
1662 le32_to_cpu(lmm->lmm_stripe_count));
1664 GOTO(cleanup, rc = PTR_ERR(handle));
1665 rc = vfs_unlink(dparent->d_inode, dchild);
1666 mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
1674 handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_UNLINK,
1677 GOTO(cleanup, rc = PTR_ERR(handle));
1678 rc = vfs_unlink(dparent->d_inode, dchild);
1679 mds_counter_incr(req->rq_export, LPROC_MDS_UNLINK);
1682 CERROR("bad file type %o unlinking %s\n", rec->ur_mode,
1685 GOTO(cleanup, rc = -EINVAL);
1688 if (rc == 0 && child_inode->i_nlink == 0) {
1689 if (mds_orphan_open_count(child_inode) > 0)
1690 rc = mds_orphan_add_link(rec, obd, dchild);
1693 GOTO(cleanup, rc = 0);
1695 if (!S_ISREG(child_inode->i_mode))
1698 if (!(body->valid & OBD_MD_FLEASIZE)) {
1699 body->valid |=(OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
1700 OBD_MD_FLATIME | OBD_MD_FLMTIME);
1701 } else if (mds_log_op_unlink(obd,
1702 lustre_msg_buf(req->rq_repmsg, offset + 1, 0),
1703 lustre_msg_buflen(req->rq_repmsg, offset + 1),
1704 lustre_msg_buf(req->rq_repmsg, offset + 2, 0),
1705 lustre_msg_buflen(req->rq_repmsg, offset+2)) >
1707 body->valid |= OBD_MD_FLCOOKIE;
1717 iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
1718 LTIME_S(iattr.ia_mtime) = rec->ur_time;
1719 LTIME_S(iattr.ia_ctime) = rec->ur_time;
1721 err = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
1723 CERROR("error on parent setattr: rc = %d\n", err);
1726 rc = mds_finish_transno(mds, dparent ? dparent->d_inode : NULL,
1727 handle, req, rc, 0);
1729 (void)obd_set_info_async(mds->mds_osc_exp, strlen("unlinked"),
1730 "unlinked", 0, NULL, NULL);
1731 switch(cleanup_phase) {
1732 case 5: /* pending_dir semaphore */
1733 UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
1734 case 4: /* child inode semaphore */
1735 MDS_UP_READ_ORPHAN_SEM(child_inode);
1736 case 3: /* child ino-reuse lock */
1737 if (rc && body != NULL) {
1738 // Don't unlink the OST objects if the MDS unlink failed
1742 ldlm_lock_decref(&child_reuse_lockh, LCK_EX);
1744 ptlrpc_save_lock(req, &child_reuse_lockh, LCK_EX);
1745 case 2: /* child lock */
1746 ldlm_lock_decref(&child_lockh, LCK_EX);
1747 case 1: /* child and parent dentry, parent lock */
1749 ldlm_lock_decref(&parent_lockh, LCK_EX);
1751 ptlrpc_save_lock(req, &parent_lockh, LCK_EX);
1758 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
1761 req->rq_status = rc;
1763 mds_shrink_reply(obd, req, body, REPLY_REC_OFF + 1);
1765 /* trigger dqrel on the owner of child and parent */
1766 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
1771 static int mds_reint_link(struct mds_update_record *rec, int offset,
1772 struct ptlrpc_request *req,
1773 struct lustre_handle *lh)
1775 struct obd_device *obd = req->rq_export->exp_obd;
1776 struct dentry *de_src = NULL;
1777 struct dentry *de_tgt_dir = NULL;
1778 struct dentry *dchild = NULL;
1779 struct mds_obd *mds = mds_req2mds(req);
1780 struct lustre_handle *handle = NULL, tgt_dir_lockh, src_lockh;
1781 struct ldlm_res_id src_res_id = { .name = {0} };
1782 struct ldlm_res_id tgt_dir_res_id = { .name = {0} };
1783 ldlm_policy_data_t src_policy ={.l_inodebits = {MDS_INODELOCK_UPDATE}};
1784 ldlm_policy_data_t tgt_dir_policy =
1785 {.l_inodebits = {MDS_INODELOCK_UPDATE}};
1786 int rc = 0, cleanup_phase = 0;
1789 LASSERT(offset == REQ_REC_OFF);
1791 DEBUG_REQ(D_INODE, req, "original "LPU64"/%u to "LPU64"/%u %s",
1792 rec->ur_fid1->id, rec->ur_fid1->generation,
1793 rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_name);
1795 mds_counter_incr(req->rq_export, LPROC_MDS_LINK);
1797 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
1799 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_LINK))
1800 GOTO(cleanup, rc = -ENOENT);
1802 /* Step 1: Lookup the source inode and target directory by FID */
1803 de_src = mds_fid2dentry(mds, rec->ur_fid1, NULL);
1805 GOTO(cleanup, rc = PTR_ERR(de_src));
1807 cleanup_phase = 1; /* source dentry */
1809 de_tgt_dir = mds_fid2dentry(mds, rec->ur_fid2, NULL);
1810 if (IS_ERR(de_tgt_dir)) {
1811 rc = PTR_ERR(de_tgt_dir);
1816 cleanup_phase = 2; /* target directory dentry */
1818 CDEBUG(D_INODE, "linking %.*s/%s to inode %lu\n",
1819 de_tgt_dir->d_name.len, de_tgt_dir->d_name.name, rec->ur_name,
1820 de_src->d_inode->i_ino);
1822 /* Step 2: Take the two locks */
1823 src_res_id.name[0] = de_src->d_inode->i_ino;
1824 src_res_id.name[1] = de_src->d_inode->i_generation;
1825 tgt_dir_res_id.name[0] = de_tgt_dir->d_inode->i_ino;
1826 tgt_dir_res_id.name[1] = de_tgt_dir->d_inode->i_generation;
1828 rc = enqueue_ordered_locks(obd, &src_res_id, &src_lockh, LCK_EX,
1830 &tgt_dir_res_id, &tgt_dir_lockh, LCK_EX,
1835 cleanup_phase = 3; /* locks */
1837 if (mds_inode_is_orphan(de_src->d_inode)) {
1838 CDEBUG(D_INODE, "an attempt to link an orphan inode %lu/%u\n",
1839 de_src->d_inode->i_ino,
1840 de_src->d_inode->i_generation);
1841 GOTO(cleanup, rc = -ENOENT);
1844 /* Step 3: Lookup the child */
1845 dchild = ll_lookup_one_len(rec->ur_name, de_tgt_dir, rec->ur_namelen-1);
1846 if (IS_ERR(dchild)) {
1847 rc = PTR_ERR(dchild);
1848 if (rc != -EPERM && rc != -EACCES && rc != -ENAMETOOLONG)
1849 CERROR("child lookup error %d\n", rc);
1853 cleanup_phase = 4; /* child dentry */
1855 if (dchild->d_inode) {
1856 CDEBUG(D_INODE, "child exists (dir %lu, name %s)\n",
1857 de_tgt_dir->d_inode->i_ino, rec->ur_name);
1862 /* Step 4: Do it. */
1863 OBD_FAIL_WRITE(obd, OBD_FAIL_MDS_REINT_LINK_WRITE, de_src->d_inode->i_sb);
1865 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
1866 GOTO(cleanup, rc = -EROFS);
1868 handle = fsfilt_start(obd, de_tgt_dir->d_inode, FSFILT_OP_LINK, NULL);
1870 GOTO(cleanup, rc = PTR_ERR(handle));
1872 rc = vfs_link(de_src, de_tgt_dir->d_inode, dchild);
1873 if (rc && rc != -EPERM && rc != -EACCES)
1874 CERROR("vfs_link error %d\n", rc);
1876 rc = mds_finish_transno(mds, de_tgt_dir ? de_tgt_dir->d_inode : NULL,
1877 handle, req, rc, 0);
1880 switch (cleanup_phase) {
1881 case 4: /* child dentry */
1885 ldlm_lock_decref(&src_lockh, LCK_EX);
1886 ldlm_lock_decref(&tgt_dir_lockh, LCK_EX);
1888 ptlrpc_save_lock(req, &src_lockh, LCK_EX);
1889 ptlrpc_save_lock(req, &tgt_dir_lockh, LCK_EX);
1891 case 2: /* target dentry */
1893 case 1: /* source dentry */
1898 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
1901 req->rq_status = rc;
1905 /* The idea here is that we need to get four locks in the end:
1906 * one on each parent directory, one on each child. We need to take
1907 * these locks in some kind of order (to avoid deadlocks), and the order
1908 * I selected is "increasing resource number" order. We need to look up
1909 * the children, however, before we know what the resource number(s) are.
1910 * Thus the following plan:
1912 * 1,2. Look up the parents
1913 * 3,4. Look up the children
1914 * 5. Take locks on the parents and children, in order
1915 * 6. Verify that the children haven't changed since they were looked up
1917 * If there was a race and the children changed since they were first looked
1918 * up, it is possible that mds_verify_child() will be able to just grab the
1919 * lock on the new child resource (if it has a higher resource than any other)
1920 * but we need to compare against not only its parent, but also against the
1921 * parent and child of the "other half" of the rename, hence maxres_{src,tgt}.
1923 * We need the fancy igrab() on the child inodes because we aren't holding a
1924 * lock on the parent after the lookup is done, so dentry->d_inode may change
1925 * at any time, and igrab() itself doesn't like getting passed a NULL argument.
1927 int mds_get_parents_children_locked(struct obd_device *obd,
1928 struct mds_obd *mds,
1929 struct ll_fid *p1_fid,
1930 struct dentry **de_srcdirp,
1931 struct ll_fid *p2_fid,
1932 struct dentry **de_tgtdirp,
1934 const char *old_name, int old_len,
1935 struct dentry **de_oldp,
1936 const char *new_name, int new_len,
1937 struct dentry **de_newp,
1938 struct lustre_handle *dlm_handles,
1941 struct ldlm_res_id p1_res_id = { .name = {0} };
1942 struct ldlm_res_id p2_res_id = { .name = {0} };
1943 struct ldlm_res_id c1_res_id = { .name = {0} };
1944 struct ldlm_res_id c2_res_id = { .name = {0} };
1945 ldlm_policy_data_t p_policy = {.l_inodebits = {MDS_INODELOCK_UPDATE}};
1946 /* Only dentry should disappear, but the inode itself would be
1947 intact otherwise. */
1948 ldlm_policy_data_t c1_policy = {.l_inodebits = {MDS_INODELOCK_LOOKUP}};
1949 /* If something is going to be replaced, both dentry and inode locks are needed */
1950 ldlm_policy_data_t c2_policy = {.l_inodebits = {MDS_INODELOCK_FULL}};
1951 struct ldlm_res_id *maxres_src, *maxres_tgt;
1952 struct inode *inode;
1953 int rc = 0, cleanup_phase = 0;
1956 /* Step 1: Lookup the source directory */
1957 *de_srcdirp = mds_fid2dentry(mds, p1_fid, NULL);
1958 if (IS_ERR(*de_srcdirp))
1959 GOTO(cleanup, rc = PTR_ERR(*de_srcdirp));
1961 cleanup_phase = 1; /* source directory dentry */
1963 p1_res_id.name[0] = (*de_srcdirp)->d_inode->i_ino;
1964 p1_res_id.name[1] = (*de_srcdirp)->d_inode->i_generation;
1966 /* Step 2: Lookup the target directory */
1967 if (memcmp(p1_fid, p2_fid, sizeof(*p1_fid)) == 0) {
1968 *de_tgtdirp = dget(*de_srcdirp);
1970 *de_tgtdirp = mds_fid2dentry(mds, p2_fid, NULL);
1971 if (IS_ERR(*de_tgtdirp)) {
1972 rc = PTR_ERR(*de_tgtdirp);
1978 cleanup_phase = 2; /* target directory dentry */
1980 p2_res_id.name[0] = (*de_tgtdirp)->d_inode->i_ino;
1981 p2_res_id.name[1] = (*de_tgtdirp)->d_inode->i_generation;
1983 /* Step 3: Lookup the source child entry */
1984 *de_oldp = ll_lookup_one_len(old_name, *de_srcdirp, old_len - 1);
1985 if (IS_ERR(*de_oldp)) {
1986 rc = PTR_ERR(*de_oldp);
1987 CERROR("old child lookup error (%.*s): %d\n",
1988 old_len - 1, old_name, rc);
1992 cleanup_phase = 3; /* original name dentry */
1994 inode = (*de_oldp)->d_inode;
1996 inode = igrab(inode);
1998 GOTO(cleanup, rc = -ENOENT);
2000 c1_res_id.name[0] = inode->i_ino;
2001 c1_res_id.name[1] = inode->i_generation;
2005 /* Step 4: Lookup the target child entry */
2007 GOTO(retry_locks, rc);
2008 *de_newp = ll_lookup_one_len(new_name, *de_tgtdirp, new_len - 1);
2009 if (IS_ERR(*de_newp)) {
2010 rc = PTR_ERR(*de_newp);
2011 if (rc != -ENAMETOOLONG)
2012 CERROR("new child lookup error (%.*s): %d\n",
2013 old_len - 1, old_name, rc);
2017 cleanup_phase = 4; /* target dentry */
2019 inode = (*de_newp)->d_inode;
2021 inode = igrab(inode);
2025 c2_res_id.name[0] = inode->i_ino;
2026 c2_res_id.name[1] = inode->i_generation;
2030 /* Step 5: Take locks on the parents and child(ren) */
2031 maxres_src = &p1_res_id;
2032 maxres_tgt = &p2_res_id;
2033 cleanup_phase = 4; /* target dentry */
2035 if (c1_res_id.name[0] != 0 && res_gt(&c1_res_id, &p1_res_id,NULL,NULL))
2036 maxres_src = &c1_res_id;
2037 if (c2_res_id.name[0] != 0 && res_gt(&c2_res_id, &p2_res_id,NULL,NULL))
2038 maxres_tgt = &c2_res_id;
2040 rc = enqueue_4ordered_locks(obd, &p1_res_id,&dlm_handles[0],parent_mode,
2042 &p2_res_id, &dlm_handles[1], parent_mode,
2044 &c1_res_id, &dlm_handles[2], child_mode,
2046 &c2_res_id, &dlm_handles[3], child_mode,
2051 cleanup_phase = 6; /* parent and child(ren) locks */
2053 /* Step 6a: Re-lookup source child to verify it hasn't changed */
2054 rc = mds_verify_child(obd, &p1_res_id, &dlm_handles[0], *de_srcdirp,
2055 parent_mode, &c1_res_id, &dlm_handles[2], de_oldp,
2056 child_mode, &c1_policy, old_name, old_len,
2059 if (c2_res_id.name[0] != 0)
2060 ldlm_lock_decref(&dlm_handles[3], child_mode);
2061 ldlm_lock_decref(&dlm_handles[1], parent_mode);
2068 if ((*de_oldp)->d_inode == NULL)
2069 GOTO(cleanup, rc = -ENOENT);
2073 /* Step 6b: Re-lookup target child to verify it hasn't changed */
2074 rc = mds_verify_child(obd, &p2_res_id, &dlm_handles[1], *de_tgtdirp,
2075 parent_mode, &c2_res_id, &dlm_handles[3], de_newp,
2076 child_mode, &c2_policy, new_name, new_len,
2079 ldlm_lock_decref(&dlm_handles[2], child_mode);
2080 ldlm_lock_decref(&dlm_handles[0], parent_mode);
2090 switch (cleanup_phase) {
2091 case 6: /* child lock(s) */
2092 if (c2_res_id.name[0] != 0)
2093 ldlm_lock_decref(&dlm_handles[3], child_mode);
2094 if (c1_res_id.name[0] != 0)
2095 ldlm_lock_decref(&dlm_handles[2], child_mode);
2096 case 5: /* parent locks */
2097 ldlm_lock_decref(&dlm_handles[1], parent_mode);
2098 ldlm_lock_decref(&dlm_handles[0], parent_mode);
2099 case 4: /* target dentry */
2101 case 3: /* source dentry */
2103 case 2: /* target directory dentry */
2104 l_dput(*de_tgtdirp);
2105 case 1: /* source directry dentry */
2106 l_dput(*de_srcdirp);
2113 static int mds_reint_rename(struct mds_update_record *rec, int offset,
2114 struct ptlrpc_request *req,
2115 struct lustre_handle *lockh)
2117 struct obd_device *obd = req->rq_export->exp_obd;
2118 struct dentry *de_srcdir = NULL;
2119 struct dentry *de_tgtdir = NULL;
2120 struct dentry *de_old = NULL;
2121 struct dentry *de_new = NULL;
2122 struct inode *old_inode = NULL, *new_inode = NULL;
2123 struct mds_obd *mds = mds_req2mds(req);
2124 struct lustre_handle dlm_handles[4];
2125 struct mds_body *body = NULL;
2126 struct lov_mds_md *lmm = NULL;
2127 int rc = 0, lock_count = 3, cleanup_phase = 0;
2128 void *handle = NULL;
2129 unsigned int qcids[MAXQUOTAS] = { 0, 0 };
2130 unsigned int qpids[4] = { 0, 0, 0, 0 };
2133 LASSERT(offset == REQ_REC_OFF);
2134 offset = REPLY_REC_OFF;
2136 DEBUG_REQ(D_INODE, req, "parent "LPU64"/%u %s to "LPU64"/%u %s",
2137 rec->ur_fid1->id, rec->ur_fid1->generation, rec->ur_name,
2138 rec->ur_fid2->id, rec->ur_fid2->generation, rec->ur_tgt);
2140 mds_counter_incr(req->rq_export, LPROC_MDS_RENAME);
2142 MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
2144 rc = mds_get_parents_children_locked(obd, mds, rec->ur_fid1, &de_srcdir,
2145 rec->ur_fid2, &de_tgtdir, LCK_EX,
2146 rec->ur_name, rec->ur_namelen,
2147 &de_old, rec->ur_tgt,
2148 rec->ur_tgtlen, &de_new,
2149 dlm_handles, LCK_EX);
2153 cleanup_phase = 1; /* parent(s), children, locks */
2155 old_inode = de_old->d_inode;
2156 new_inode = de_new->d_inode;
2158 if (new_inode != NULL)
2161 /* sanity check for src inode */
2162 if (old_inode->i_ino == de_srcdir->d_inode->i_ino ||
2163 old_inode->i_ino == de_tgtdir->d_inode->i_ino)
2164 GOTO(cleanup, rc = -EINVAL);
2166 if (req->rq_export->exp_connect_flags & OBD_CONNECT_RDONLY)
2167 GOTO(cleanup, rc = -EROFS);
2169 if (new_inode == NULL)
2173 cleanup_phase = 2; /* iput(new_inode) when finished */
2175 /* sanity check for dest inode */
2176 if (new_inode->i_ino == de_srcdir->d_inode->i_ino ||
2177 new_inode->i_ino == de_tgtdir->d_inode->i_ino)
2178 GOTO(cleanup, rc = -EINVAL);
2180 if (old_inode == new_inode)
2181 GOTO(cleanup, rc = 0);
2183 /* save uids/gids for qunit acquire/release */
2184 qcids[USRQUOTA] = old_inode->i_uid;
2185 qcids[GRPQUOTA] = old_inode->i_gid;
2186 qpids[USRQUOTA] = de_tgtdir->d_inode->i_uid;
2187 qpids[GRPQUOTA] = de_tgtdir->d_inode->i_gid;
2188 qpids[2] = de_srcdir->d_inode->i_uid;
2189 qpids[3] = de_srcdir->d_inode->i_gid;
2191 /* if we are about to remove the target at first, pass the EA of
2192 * that inode to client to perform and cleanup on OST */
2193 body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body));
2194 LASSERT(body != NULL);
2196 /* child orphan sem protects orphan_dec_test && is_orphan race */
2197 MDS_DOWN_READ_ORPHAN_SEM(new_inode);
2198 cleanup_phase = 3; /* MDS_UP_READ_ORPHAN_SEM(new_inode) when finished */
2200 if ((S_ISDIR(new_inode->i_mode) && new_inode->i_nlink == 2) ||
2201 new_inode->i_nlink == 1) {
2202 if (mds_orphan_open_count(new_inode) > 0) {
2203 /* need to lock pending_dir before transaction */
2204 LOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
2205 cleanup_phase = 4; /* UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode); */
2206 } else if (S_ISREG(new_inode->i_mode)) {
2207 mds_pack_inode2fid(&body->fid1, new_inode);
2208 mds_pack_inode2body(body, new_inode);
2209 mds_pack_md(obd, req->rq_repmsg, offset + 1, body,
2210 new_inode, MDS_PACK_MD_LOCK);
2215 OBD_FAIL_WRITE(obd, OBD_FAIL_MDS_REINT_RENAME_WRITE,
2216 de_srcdir->d_inode->i_sb);
2218 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
2219 /* Check if we are moving old entry into its child. 2.6 does not
2220 check for this in vfs_rename() anymore */
2221 if (is_subdir(de_new, de_old))
2222 GOTO(cleanup, rc = -EINVAL);
2225 lmm = lustre_msg_buf(req->rq_repmsg, offset + 1, 0);
2226 handle = fsfilt_start_log(obd, de_tgtdir->d_inode, FSFILT_OP_RENAME,
2227 NULL, le32_to_cpu(lmm->lmm_stripe_count));
2230 GOTO(cleanup, rc = PTR_ERR(handle));
2233 de_old->d_fsdata = req;
2234 de_new->d_fsdata = req;
2236 rc = vfs_rename(de_srcdir->d_inode, de_old, de_tgtdir->d_inode, de_new);
2239 if (rc == 0 && new_inode != NULL && new_inode->i_nlink == 0) {
2240 if (mds_orphan_open_count(new_inode) > 0)
2241 rc = mds_orphan_add_link(rec, obd, de_new);
2244 GOTO(cleanup, rc = 0);
2246 if (!S_ISREG(new_inode->i_mode))
2249 if (!(body->valid & OBD_MD_FLEASIZE)) {
2250 body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
2251 OBD_MD_FLATIME | OBD_MD_FLMTIME);
2252 } else if (mds_log_op_unlink(obd,
2253 lustre_msg_buf(req->rq_repmsg,
2255 lustre_msg_buflen(req->rq_repmsg,
2257 lustre_msg_buf(req->rq_repmsg,
2259 lustre_msg_buflen(req->rq_repmsg,
2262 body->valid |= OBD_MD_FLCOOKIE;
2268 rc = mds_finish_transno(mds, de_tgtdir ? de_tgtdir->d_inode : NULL,
2269 handle, req, rc, 0);
2271 switch (cleanup_phase) {
2273 UNLOCK_INODE_MUTEX(mds->mds_pending_dir->d_inode);
2275 MDS_UP_READ_ORPHAN_SEM(new_inode);
2280 if (lock_count == 4)
2281 ldlm_lock_decref(&(dlm_handles[3]), LCK_EX);
2282 ldlm_lock_decref(&(dlm_handles[2]), LCK_EX);
2283 ldlm_lock_decref(&(dlm_handles[1]), LCK_EX);
2284 ldlm_lock_decref(&(dlm_handles[0]), LCK_EX);
2286 if (lock_count == 4)
2287 ptlrpc_save_lock(req,&(dlm_handles[3]), LCK_EX);
2288 ptlrpc_save_lock(req, &(dlm_handles[2]), LCK_EX);
2289 ptlrpc_save_lock(req, &(dlm_handles[1]), LCK_EX);
2290 ptlrpc_save_lock(req, &(dlm_handles[0]), LCK_EX);
2299 CERROR("invalid cleanup_phase %d\n", cleanup_phase);
2302 req->rq_status = rc;
2304 /* acquire/release qunit */
2305 lquota_adjust(mds_quota_interface_ref, obd, qcids, qpids, rc,
2310 typedef int (*mds_reinter)(struct mds_update_record *, int offset,
2311 struct ptlrpc_request *, struct lustre_handle *);
2313 static mds_reinter reinters[REINT_MAX] = {
2314 [REINT_SETATTR] mds_reint_setattr,
2315 [REINT_CREATE] mds_reint_create,
2316 [REINT_LINK] mds_reint_link,
2317 [REINT_UNLINK] mds_reint_unlink,
2318 [REINT_RENAME] mds_reint_rename,
2319 [REINT_OPEN] mds_open
2322 int mds_reint_rec(struct mds_update_record *rec, int offset,
2323 struct ptlrpc_request *req, struct lustre_handle *lockh)
2325 struct obd_device *obd = req->rq_export->exp_obd;
2326 struct mds_obd *mds = &obd->u.mds;
2327 struct lvfs_run_ctxt saved;
2332 if (req->rq_uid != LNET_UID_ANY) {
2333 /* non-root local cluster client
2334 * NB root's creds are believed... */
2335 LASSERT (req->rq_uid != 0);
2336 rec->ur_uc.luc_fsuid = req->rq_uid;
2337 rec->ur_uc.luc_cap = 0;
2341 /* get group info of this user */
2342 rec->ur_uc.luc_uce = upcall_cache_get_entry(mds->mds_group_hash,
2343 rec->ur_uc.luc_fsuid,
2344 rec->ur_uc.luc_fsgid, 2,
2345 &rec->ur_uc.luc_suppgid1);
2347 if (IS_ERR(rec->ur_uc.luc_uce)) {
2348 rc = PTR_ERR(rec->ur_uc.luc_uce);
2349 rec->ur_uc.luc_uce = NULL;
2353 /* checked by unpacker */
2354 LASSERT(rec->ur_opcode < REINT_MAX && reinters[rec->ur_opcode] != NULL);
2357 if (rec->ur_uc.luc_uce)
2358 rec->ur_uc.luc_fsgid = rec->ur_uc.luc_uce->ue_primary;
2361 push_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
2362 rc = reinters[rec->ur_opcode] (rec, offset, req, lockh);
2363 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, &rec->ur_uc);
2365 upcall_cache_put_entry(mds->mds_group_hash, rec->ur_uc.luc_uce);