4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Phil Schwan <phil@clusterfs.com>
40 * Author: Andreas Dilger <adilger@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_LLITE
44 #include <lustre_dlm.h>
45 #include <lustre_lite.h>
46 #include <linux/pagemap.h>
47 #include <linux/file.h>
48 #include <linux/sched.h>
49 #include "llite_internal.h"
50 #include <lustre/ll_fiemap.h>
51 #include <lustre_ioctl.h>
53 #include "cl_object.h"
56 ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
58 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
61 static enum llioc_iter
62 ll_iocontrol_call(struct inode *inode, struct file *file,
63 unsigned int cmd, unsigned long arg, int *rcp);
65 static struct ll_file_data *ll_file_data_get(void)
67 struct ll_file_data *fd;
69 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, GFP_NOFS);
73 fd->fd_write_failed = false;
78 static void ll_file_data_put(struct ll_file_data *fd)
81 OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
84 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
85 struct lustre_handle *fh)
87 op_data->op_fid1 = ll_i2info(inode)->lli_fid;
88 op_data->op_attr.ia_mode = inode->i_mode;
89 op_data->op_attr.ia_atime = inode->i_atime;
90 op_data->op_attr.ia_mtime = inode->i_mtime;
91 op_data->op_attr.ia_ctime = inode->i_ctime;
92 op_data->op_attr.ia_size = i_size_read(inode);
93 op_data->op_attr_blocks = inode->i_blocks;
94 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
95 ll_inode_to_ext_flags(inode->i_flags);
96 op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
98 op_data->op_handle = *fh;
99 op_data->op_capa1 = ll_mdscapa_get(inode);
101 if (LLIF_DATA_MODIFIED & ll_i2info(inode)->lli_flags)
102 op_data->op_bias |= MDS_DATA_MODIFIED;
106 * Closes the IO epoch and packs all the attributes into @op_data for
109 static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
110 struct obd_client_handle *och)
114 op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME | ATTR_ATIME_SET |
115 ATTR_MTIME | ATTR_MTIME_SET |
116 ATTR_CTIME | ATTR_CTIME_SET;
118 if (!(och->och_flags & FMODE_WRITE))
121 if (!exp_connect_som(ll_i2mdexp(inode)) || !S_ISREG(inode->i_mode))
122 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
124 ll_ioepoch_close(inode, op_data, &och, 0);
127 ll_pack_inode2opdata(inode, op_data, &och->och_fh);
128 ll_prep_md_op_data(op_data, inode, NULL, NULL,
129 0, 0, LUSTRE_OPC_ANY, NULL);
133 static int ll_close_inode_openhandle(struct obd_export *md_exp,
135 struct obd_client_handle *och,
136 const __u64 *data_version)
138 struct obd_export *exp = ll_i2mdexp(inode);
139 struct md_op_data *op_data;
140 struct ptlrpc_request *req = NULL;
141 struct obd_device *obd = class_exp2obd(exp);
148 * XXX: in case of LMV, is this correct to access
151 CERROR("Invalid MDC connection handle "LPX64"\n",
152 ll_i2mdexp(inode)->exp_handle.h_cookie);
156 OBD_ALLOC_PTR(op_data);
158 GOTO(out, rc = -ENOMEM); // XXX We leak openhandle and request here.
160 ll_prepare_close(inode, op_data, och);
161 if (data_version != NULL) {
162 /* Pass in data_version implies release. */
163 op_data->op_bias |= MDS_HSM_RELEASE;
164 op_data->op_data_version = *data_version;
165 op_data->op_lease_handle = och->och_lease_handle;
166 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
168 epoch_close = (op_data->op_flags & MF_EPOCH_CLOSE);
169 rc = md_close(md_exp, op_data, och->och_mod, &req);
171 /* This close must have the epoch closed. */
172 LASSERT(epoch_close);
173 /* MDS has instructed us to obtain Size-on-MDS attribute from
174 * OSTs and send setattr to back to MDS. */
175 rc = ll_som_update(inode, op_data);
177 CERROR("%s: inode "DFID" mdc Size-on-MDS update"
178 " failed: rc = %d\n",
179 ll_i2mdexp(inode)->exp_obd->obd_name,
180 PFID(ll_inode2fid(inode)), rc);
184 CERROR("%s: inode "DFID" mdc close failed: rc = %d\n",
185 ll_i2mdexp(inode)->exp_obd->obd_name,
186 PFID(ll_inode2fid(inode)), rc);
189 /* DATA_MODIFIED flag was successfully sent on close, cancel data
190 * modification flag. */
191 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
192 struct ll_inode_info *lli = ll_i2info(inode);
194 spin_lock(&lli->lli_lock);
195 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
196 spin_unlock(&lli->lli_lock);
200 rc = ll_objects_destroy(req, inode);
202 CERROR("%s: inode "DFID
203 " ll_objects destroy: rc = %d\n",
204 ll_i2mdexp(inode)->exp_obd->obd_name,
205 PFID(ll_inode2fid(inode)), rc);
208 if (rc == 0 && op_data->op_bias & MDS_HSM_RELEASE) {
209 struct mdt_body *body;
210 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
211 if (!(body->mbo_valid & OBD_MD_FLRELEASED))
215 ll_finish_md_op_data(op_data);
219 if (exp_connect_som(exp) && !epoch_close &&
220 S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
221 ll_queue_done_writing(inode, LLIF_DONE_WRITING);
223 md_clear_open_replay_data(md_exp, och);
224 /* Free @och if it is not waiting for DONE_WRITING. */
225 och->och_fh.cookie = DEAD_HANDLE_MAGIC;
228 if (req) /* This is close request */
229 ptlrpc_req_finished(req);
233 int ll_md_real_close(struct inode *inode, fmode_t fmode)
235 struct ll_inode_info *lli = ll_i2info(inode);
236 struct obd_client_handle **och_p;
237 struct obd_client_handle *och;
242 if (fmode & FMODE_WRITE) {
243 och_p = &lli->lli_mds_write_och;
244 och_usecount = &lli->lli_open_fd_write_count;
245 } else if (fmode & FMODE_EXEC) {
246 och_p = &lli->lli_mds_exec_och;
247 och_usecount = &lli->lli_open_fd_exec_count;
249 LASSERT(fmode & FMODE_READ);
250 och_p = &lli->lli_mds_read_och;
251 och_usecount = &lli->lli_open_fd_read_count;
254 mutex_lock(&lli->lli_och_mutex);
255 if (*och_usecount > 0) {
256 /* There are still users of this handle, so skip
258 mutex_unlock(&lli->lli_och_mutex);
264 mutex_unlock(&lli->lli_och_mutex);
267 /* There might be a race and this handle may already
269 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
276 static int ll_md_close(struct obd_export *md_exp, struct inode *inode,
279 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
280 struct ll_inode_info *lli = ll_i2info(inode);
284 /* clear group lock, if present */
285 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
286 ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
288 if (fd->fd_lease_och != NULL) {
291 /* Usually the lease is not released when the
292 * application crashed, we need to release here. */
293 rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken);
294 CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n",
295 PFID(&lli->lli_fid), rc, lease_broken);
297 fd->fd_lease_och = NULL;
300 if (fd->fd_och != NULL) {
301 rc = ll_close_inode_openhandle(md_exp, inode, fd->fd_och, NULL);
306 /* Let's see if we have good enough OPEN lock on the file and if
307 we can skip talking to MDS */
308 if (file->f_dentry->d_inode) { /* Can this ever be false? */
310 __u64 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
311 struct lustre_handle lockh;
312 struct inode *inode = file->f_dentry->d_inode;
313 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
315 mutex_lock(&lli->lli_och_mutex);
316 if (fd->fd_omode & FMODE_WRITE) {
318 LASSERT(lli->lli_open_fd_write_count);
319 lli->lli_open_fd_write_count--;
320 } else if (fd->fd_omode & FMODE_EXEC) {
322 LASSERT(lli->lli_open_fd_exec_count);
323 lli->lli_open_fd_exec_count--;
326 LASSERT(lli->lli_open_fd_read_count);
327 lli->lli_open_fd_read_count--;
329 mutex_unlock(&lli->lli_och_mutex);
331 if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
332 LDLM_IBITS, &policy, lockmode,
334 rc = ll_md_real_close(file->f_dentry->d_inode,
338 CERROR("released file has negative dentry: file = %p, "
339 "dentry = %p, name = %s\n",
340 file, file->f_dentry, file->f_dentry->d_name.name);
344 LUSTRE_FPRIVATE(file) = NULL;
345 ll_file_data_put(fd);
346 ll_capa_close(inode);
351 /* While this returns an error code, fput() the caller does not, so we need
352 * to make every effort to clean up all of our state here. Also, applications
353 * rarely check close errors and even if an error is returned they will not
354 * re-try the close call.
356 int ll_file_release(struct inode *inode, struct file *file)
358 struct ll_file_data *fd;
359 struct ll_sb_info *sbi = ll_i2sbi(inode);
360 struct ll_inode_info *lli = ll_i2info(inode);
364 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
365 PFID(ll_inode2fid(inode)), inode);
367 #ifdef CONFIG_FS_POSIX_ACL
368 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
369 inode == inode->i_sb->s_root->d_inode) {
370 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
373 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
374 fd->fd_flags &= ~LL_FILE_RMTACL;
375 rct_del(&sbi->ll_rct, current_pid());
376 et_search_free(&sbi->ll_et, current_pid());
381 if (inode->i_sb->s_root != file->f_dentry)
382 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
383 fd = LUSTRE_FPRIVATE(file);
386 /* The last ref on @file, maybe not the the owner pid of statahead.
387 * Different processes can open the same dir, "ll_opendir_key" means:
388 * it is me that should stop the statahead thread. */
389 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
390 lli->lli_opendir_pid != 0)
391 ll_stop_statahead(inode, lli->lli_opendir_key);
393 if (inode->i_sb->s_root == file->f_dentry) {
394 LUSTRE_FPRIVATE(file) = NULL;
395 ll_file_data_put(fd);
399 if (!S_ISDIR(inode->i_mode)) {
400 if (lli->lli_clob != NULL)
401 lov_read_and_clear_async_rc(lli->lli_clob);
402 lli->lli_async_rc = 0;
405 rc = ll_md_close(sbi->ll_md_exp, inode, file);
407 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
408 libcfs_debug_dumplog();
413 static int ll_intent_file_open(struct file *file, void *lmm, int lmmsize,
414 struct lookup_intent *itp)
416 struct dentry *de = file->f_dentry;
417 struct ll_sb_info *sbi = ll_i2sbi(de->d_inode);
418 struct dentry *parent = de->d_parent;
419 const char *name = NULL;
421 struct md_op_data *op_data;
422 struct ptlrpc_request *req = NULL;
426 LASSERT(parent != NULL);
427 LASSERT(itp->it_flags & MDS_OPEN_BY_FID);
429 /* if server supports open-by-fid, or file name is invalid, don't pack
430 * name in open request */
431 if (!(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_OPEN_BY_FID) &&
432 lu_name_is_valid_2(de->d_name.name, de->d_name.len)) {
433 name = de->d_name.name;
434 len = de->d_name.len;
437 op_data = ll_prep_md_op_data(NULL, parent->d_inode, de->d_inode,
438 name, len, 0, LUSTRE_OPC_ANY, NULL);
440 RETURN(PTR_ERR(op_data));
441 op_data->op_data = lmm;
442 op_data->op_data_size = lmmsize;
444 rc = md_intent_lock(sbi->ll_md_exp, op_data, itp, &req,
445 &ll_md_blocking_ast, 0);
446 ll_finish_md_op_data(op_data);
448 /* reason for keep own exit path - don`t flood log
449 * with messages with -ESTALE errors.
451 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
452 it_open_error(DISP_OPEN_OPEN, itp))
454 ll_release_openhandle(de, itp);
458 if (it_disposition(itp, DISP_LOOKUP_NEG))
459 GOTO(out, rc = -ENOENT);
461 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
462 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
463 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
467 rc = ll_prep_inode(&de->d_inode, req, NULL, itp);
468 if (!rc && itp->d.lustre.it_lock_mode)
469 ll_set_lock_data(sbi->ll_md_exp, de->d_inode, itp, NULL);
472 ptlrpc_req_finished(req);
473 ll_intent_drop_lock(itp);
479 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
480 * not believe attributes if a few ioepoch holders exist. Attributes for
481 * previous ioepoch if new one is opened are also skipped by MDS.
483 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
485 if (ioepoch && lli->lli_ioepoch != ioepoch) {
486 lli->lli_ioepoch = ioepoch;
487 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
488 ioepoch, PFID(&lli->lli_fid));
492 static int ll_och_fill(struct obd_export *md_exp, struct lookup_intent *it,
493 struct obd_client_handle *och)
495 struct ptlrpc_request *req = it->d.lustre.it_data;
496 struct mdt_body *body;
498 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
499 och->och_fh = body->mbo_handle;
500 och->och_fid = body->mbo_fid1;
501 och->och_lease_handle.cookie = it->d.lustre.it_lock_handle;
502 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
503 och->och_flags = it->it_flags;
505 return md_set_open_replay_data(md_exp, och, it);
508 static int ll_local_open(struct file *file, struct lookup_intent *it,
509 struct ll_file_data *fd, struct obd_client_handle *och)
511 struct inode *inode = file->f_dentry->d_inode;
512 struct ll_inode_info *lli = ll_i2info(inode);
515 LASSERT(!LUSTRE_FPRIVATE(file));
520 struct ptlrpc_request *req = it->d.lustre.it_data;
521 struct mdt_body *body;
524 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
528 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
529 ll_ioepoch_open(lli, body->mbo_ioepoch);
532 LUSTRE_FPRIVATE(file) = fd;
533 ll_readahead_init(inode, &fd->fd_ras);
534 fd->fd_omode = it->it_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
536 /* ll_cl_context initialize */
537 rwlock_init(&fd->fd_lock);
538 INIT_LIST_HEAD(&fd->fd_lccs);
543 /* Open a file, and (for the very first open) create objects on the OSTs at
544 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
545 * creation or open until ll_lov_setstripe() ioctl is called.
547 * If we already have the stripe MD locally then we don't request it in
548 * md_open(), by passing a lmm_size = 0.
550 * It is up to the application to ensure no other processes open this file
551 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
552 * used. We might be able to avoid races of that sort by getting lli_open_sem
553 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
554 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
556 int ll_file_open(struct inode *inode, struct file *file)
558 struct ll_inode_info *lli = ll_i2info(inode);
559 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
560 .it_flags = file->f_flags };
561 struct obd_client_handle **och_p = NULL;
562 __u64 *och_usecount = NULL;
563 struct ll_file_data *fd;
564 int rc = 0, opendir_set = 0;
567 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), flags %o\n",
568 PFID(ll_inode2fid(inode)), inode, file->f_flags);
570 it = file->private_data; /* XXX: compat macro */
571 file->private_data = NULL; /* prevent ll_local_open assertion */
573 fd = ll_file_data_get();
575 GOTO(out_openerr, rc = -ENOMEM);
578 if (S_ISDIR(inode->i_mode)) {
579 spin_lock(&lli->lli_sa_lock);
580 if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
581 lli->lli_opendir_pid == 0) {
582 lli->lli_opendir_key = fd;
583 lli->lli_opendir_pid = current_pid();
586 spin_unlock(&lli->lli_sa_lock);
589 if (inode->i_sb->s_root == file->f_dentry) {
590 LUSTRE_FPRIVATE(file) = fd;
594 if (!it || !it->d.lustre.it_disposition) {
595 /* Convert f_flags into access mode. We cannot use file->f_mode,
596 * because everything but O_ACCMODE mask was stripped from
598 if ((oit.it_flags + 1) & O_ACCMODE)
600 if (file->f_flags & O_TRUNC)
601 oit.it_flags |= FMODE_WRITE;
603 /* kernel only call f_op->open in dentry_open. filp_open calls
604 * dentry_open after call to open_namei that checks permissions.
605 * Only nfsd_open call dentry_open directly without checking
606 * permissions and because of that this code below is safe. */
607 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
608 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
610 /* We do not want O_EXCL here, presumably we opened the file
611 * already? XXX - NFS implications? */
612 oit.it_flags &= ~O_EXCL;
614 /* bug20584, if "it_flags" contains O_CREAT, the file will be
615 * created if necessary, then "IT_CREAT" should be set to keep
616 * consistent with it */
617 if (oit.it_flags & O_CREAT)
618 oit.it_op |= IT_CREAT;
624 /* Let's see if we have file open on MDS already. */
625 if (it->it_flags & FMODE_WRITE) {
626 och_p = &lli->lli_mds_write_och;
627 och_usecount = &lli->lli_open_fd_write_count;
628 } else if (it->it_flags & FMODE_EXEC) {
629 och_p = &lli->lli_mds_exec_och;
630 och_usecount = &lli->lli_open_fd_exec_count;
632 och_p = &lli->lli_mds_read_och;
633 och_usecount = &lli->lli_open_fd_read_count;
636 mutex_lock(&lli->lli_och_mutex);
637 if (*och_p) { /* Open handle is present */
638 if (it_disposition(it, DISP_OPEN_OPEN)) {
639 /* Well, there's extra open request that we do not need,
640 let's close it somehow. This will decref request. */
641 rc = it_open_error(DISP_OPEN_OPEN, it);
643 mutex_unlock(&lli->lli_och_mutex);
644 GOTO(out_openerr, rc);
647 ll_release_openhandle(file->f_dentry, it);
651 rc = ll_local_open(file, it, fd, NULL);
654 mutex_unlock(&lli->lli_och_mutex);
655 GOTO(out_openerr, rc);
658 LASSERT(*och_usecount == 0);
659 if (!it->d.lustre.it_disposition) {
660 /* We cannot just request lock handle now, new ELC code
661 means that one of other OPEN locks for this file
662 could be cancelled, and since blocking ast handler
663 would attempt to grab och_mutex as well, that would
664 result in a deadlock */
665 mutex_unlock(&lli->lli_och_mutex);
667 * Normally called under two situations:
669 * 2. revalidate with IT_OPEN (revalidate doesn't
670 * execute this intent any more).
672 * Always fetch MDS_OPEN_LOCK if this is not setstripe.
674 * Always specify MDS_OPEN_BY_FID because we don't want
675 * to get file with different fid.
677 it->it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID;
678 rc = ll_intent_file_open(file, NULL, 0, it);
680 GOTO(out_openerr, rc);
684 OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
686 GOTO(out_och_free, rc = -ENOMEM);
690 /* md_intent_lock() didn't get a request ref if there was an
691 * open error, so don't do cleanup on the request here
693 /* XXX (green): Should not we bail out on any error here, not
694 * just open error? */
695 rc = it_open_error(DISP_OPEN_OPEN, it);
697 GOTO(out_och_free, rc);
699 LASSERTF(it_disposition(it, DISP_ENQ_OPEN_REF),
700 "inode %p: disposition %x, status %d\n", inode,
701 it_disposition(it, ~0), it->d.lustre.it_status);
703 rc = ll_local_open(file, it, fd, *och_p);
705 GOTO(out_och_free, rc);
707 mutex_unlock(&lli->lli_och_mutex);
710 /* Must do this outside lli_och_mutex lock to prevent deadlock where
711 different kind of OPEN lock for this same inode gets cancelled
712 by ldlm_cancel_lru */
713 if (!S_ISREG(inode->i_mode))
714 GOTO(out_och_free, rc);
718 if (!lli->lli_has_smd &&
719 (cl_is_lov_delay_create(file->f_flags) ||
720 (file->f_mode & FMODE_WRITE) == 0)) {
721 CDEBUG(D_INODE, "object creation was delayed\n");
722 GOTO(out_och_free, rc);
724 cl_lov_delay_create_clear(&file->f_flags);
725 GOTO(out_och_free, rc);
729 if (och_p && *och_p) {
730 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
731 *och_p = NULL; /* OBD_FREE writes some magic there */
734 mutex_unlock(&lli->lli_och_mutex);
737 if (opendir_set != 0)
738 ll_stop_statahead(inode, lli->lli_opendir_key);
740 ll_file_data_put(fd);
742 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
745 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
746 ptlrpc_req_finished(it->d.lustre.it_data);
747 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
753 static int ll_md_blocking_lease_ast(struct ldlm_lock *lock,
754 struct ldlm_lock_desc *desc, void *data, int flag)
757 struct lustre_handle lockh;
761 case LDLM_CB_BLOCKING:
762 ldlm_lock2handle(lock, &lockh);
763 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
765 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
769 case LDLM_CB_CANCELING:
777 * Acquire a lease and open the file.
779 static struct obd_client_handle *
780 ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode,
783 struct lookup_intent it = { .it_op = IT_OPEN };
784 struct ll_sb_info *sbi = ll_i2sbi(inode);
785 struct md_op_data *op_data;
786 struct ptlrpc_request *req = NULL;
787 struct lustre_handle old_handle = { 0 };
788 struct obd_client_handle *och = NULL;
793 if (fmode != FMODE_WRITE && fmode != FMODE_READ)
794 RETURN(ERR_PTR(-EINVAL));
797 struct ll_inode_info *lli = ll_i2info(inode);
798 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
799 struct obd_client_handle **och_p;
802 if (!(fmode & file->f_mode) || (file->f_mode & FMODE_EXEC))
803 RETURN(ERR_PTR(-EPERM));
805 /* Get the openhandle of the file */
807 mutex_lock(&lli->lli_och_mutex);
808 if (fd->fd_lease_och != NULL) {
809 mutex_unlock(&lli->lli_och_mutex);
813 if (fd->fd_och == NULL) {
814 if (file->f_mode & FMODE_WRITE) {
815 LASSERT(lli->lli_mds_write_och != NULL);
816 och_p = &lli->lli_mds_write_och;
817 och_usecount = &lli->lli_open_fd_write_count;
819 LASSERT(lli->lli_mds_read_och != NULL);
820 och_p = &lli->lli_mds_read_och;
821 och_usecount = &lli->lli_open_fd_read_count;
823 if (*och_usecount == 1) {
830 mutex_unlock(&lli->lli_och_mutex);
831 if (rc < 0) /* more than 1 opener */
834 LASSERT(fd->fd_och != NULL);
835 old_handle = fd->fd_och->och_fh;
840 RETURN(ERR_PTR(-ENOMEM));
842 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
843 LUSTRE_OPC_ANY, NULL);
845 GOTO(out, rc = PTR_ERR(op_data));
847 /* To tell the MDT this openhandle is from the same owner */
848 op_data->op_handle = old_handle;
850 it.it_flags = fmode | open_flags;
851 it.it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID | MDS_OPEN_LEASE;
852 rc = md_intent_lock(sbi->ll_md_exp, op_data, &it, &req,
853 &ll_md_blocking_lease_ast,
854 /* LDLM_FL_NO_LRU: To not put the lease lock into LRU list, otherwise
855 * it can be cancelled which may mislead applications that the lease is
857 * LDLM_FL_EXCL: Set this flag so that it won't be matched by normal
858 * open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast
859 * doesn't deal with openhandle, so normal openhandle will be leaked. */
860 LDLM_FL_NO_LRU | LDLM_FL_EXCL);
861 ll_finish_md_op_data(op_data);
862 ptlrpc_req_finished(req);
864 GOTO(out_release_it, rc);
866 if (it_disposition(&it, DISP_LOOKUP_NEG))
867 GOTO(out_release_it, rc = -ENOENT);
869 rc = it_open_error(DISP_OPEN_OPEN, &it);
871 GOTO(out_release_it, rc);
873 LASSERT(it_disposition(&it, DISP_ENQ_OPEN_REF));
874 ll_och_fill(sbi->ll_md_exp, &it, och);
876 if (!it_disposition(&it, DISP_OPEN_LEASE)) /* old server? */
877 GOTO(out_close, rc = -EOPNOTSUPP);
879 /* already get lease, handle lease lock */
880 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
881 if (it.d.lustre.it_lock_mode == 0 ||
882 it.d.lustre.it_lock_bits != MDS_INODELOCK_OPEN) {
883 /* open lock must return for lease */
884 CERROR(DFID "lease granted but no open lock, %d/"LPU64".\n",
885 PFID(ll_inode2fid(inode)), it.d.lustre.it_lock_mode,
886 it.d.lustre.it_lock_bits);
887 GOTO(out_close, rc = -EPROTO);
890 ll_intent_release(&it);
894 /* Cancel open lock */
895 if (it.d.lustre.it_lock_mode != 0) {
896 ldlm_lock_decref_and_cancel(&och->och_lease_handle,
897 it.d.lustre.it_lock_mode);
898 it.d.lustre.it_lock_mode = 0;
899 och->och_lease_handle.cookie = 0ULL;
901 rc2 = ll_close_inode_openhandle(sbi->ll_md_exp, inode, och, NULL);
903 CERROR("%s: error closing file "DFID": %d\n",
904 ll_get_fsname(inode->i_sb, NULL, 0),
905 PFID(&ll_i2info(inode)->lli_fid), rc2);
906 och = NULL; /* och has been freed in ll_close_inode_openhandle() */
908 ll_intent_release(&it);
916 * Release lease and close the file.
917 * It will check if the lease has ever broken.
919 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
922 struct ldlm_lock *lock;
923 bool cancelled = true;
927 lock = ldlm_handle2lock(&och->och_lease_handle);
929 lock_res_and_lock(lock);
930 cancelled = ldlm_is_cancel(lock);
931 unlock_res_and_lock(lock);
935 CDEBUG(D_INODE, "lease for "DFID" broken? %d\n",
936 PFID(&ll_i2info(inode)->lli_fid), cancelled);
939 ldlm_cli_cancel(&och->och_lease_handle, 0);
940 if (lease_broken != NULL)
941 *lease_broken = cancelled;
943 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
948 /* Fills the obdo with the attributes for the lsm */
949 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
950 struct obd_capa *capa, struct obdo *obdo,
951 __u64 ioepoch, int dv_flags)
953 struct ptlrpc_request_set *set;
954 struct obd_info oinfo = { { { 0 } } };
959 LASSERT(lsm != NULL);
963 oinfo.oi_oa->o_oi = lsm->lsm_oi;
964 oinfo.oi_oa->o_mode = S_IFREG;
965 oinfo.oi_oa->o_ioepoch = ioepoch;
966 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
967 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
968 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
969 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
970 OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
971 OBD_MD_FLDATAVERSION;
972 oinfo.oi_capa = capa;
973 if (dv_flags & (LL_DV_WR_FLUSH | LL_DV_RD_FLUSH)) {
974 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
975 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
976 if (dv_flags & LL_DV_WR_FLUSH)
977 oinfo.oi_oa->o_flags |= OBD_FL_FLUSH;
980 set = ptlrpc_prep_set();
982 CERROR("cannot allocate ptlrpc set: rc = %d\n", -ENOMEM);
985 rc = obd_getattr_async(exp, &oinfo, set);
987 rc = ptlrpc_set_wait(set);
988 ptlrpc_set_destroy(set);
991 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
992 OBD_MD_FLATIME | OBD_MD_FLMTIME |
993 OBD_MD_FLCTIME | OBD_MD_FLSIZE |
994 OBD_MD_FLDATAVERSION | OBD_MD_FLFLAGS);
995 if (dv_flags & LL_DV_WR_FLUSH &&
996 !(oinfo.oi_oa->o_valid & OBD_MD_FLFLAGS &&
997 oinfo.oi_oa->o_flags & OBD_FL_FLUSH))
1004 * Performs the getattr on the inode and updates its fields.
1005 * If @sync != 0, perform the getattr under the server-side lock.
1007 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
1008 __u64 ioepoch, int sync)
1010 struct obd_capa *capa = ll_mdscapa_get(inode);
1011 struct lov_stripe_md *lsm;
1015 lsm = ccc_inode_lsm_get(inode);
1016 rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
1017 capa, obdo, ioepoch, sync ? LL_DV_RD_FLUSH : 0);
1020 struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
1022 obdo_refresh_inode(inode, obdo, obdo->o_valid);
1023 CDEBUG(D_INODE, "objid "DOSTID" size %llu, blocks %llu,"
1024 " blksize %lu\n", POSTID(oi), i_size_read(inode),
1025 (unsigned long long)inode->i_blocks,
1026 (unsigned long)ll_inode_blksize(inode));
1028 ccc_inode_lsm_put(inode, lsm);
1032 int ll_merge_lvb(const struct lu_env *env, struct inode *inode)
1034 struct ll_inode_info *lli = ll_i2info(inode);
1035 struct cl_object *obj = lli->lli_clob;
1036 struct cl_attr *attr = ccc_env_thread_attr(env);
1042 ll_inode_size_lock(inode);
1043 /* merge timestamps the most recently obtained from mds with
1044 timestamps obtained from osts */
1045 LTIME_S(inode->i_atime) = lli->lli_lvb.lvb_atime;
1046 LTIME_S(inode->i_mtime) = lli->lli_lvb.lvb_mtime;
1047 LTIME_S(inode->i_ctime) = lli->lli_lvb.lvb_ctime;
1048 inode_init_lvb(inode, &lvb);
1050 cl_object_attr_lock(obj);
1051 rc = cl_object_attr_get(env, obj, attr);
1052 cl_object_attr_unlock(obj);
1055 if (lvb.lvb_atime < attr->cat_atime)
1056 lvb.lvb_atime = attr->cat_atime;
1057 if (lvb.lvb_ctime < attr->cat_ctime)
1058 lvb.lvb_ctime = attr->cat_ctime;
1059 if (lvb.lvb_mtime < attr->cat_mtime)
1060 lvb.lvb_mtime = attr->cat_mtime;
1062 CDEBUG(D_VFSTRACE, DFID" updating i_size "LPU64"\n",
1063 PFID(&lli->lli_fid), attr->cat_size);
1064 cl_isize_write_nolock(inode, attr->cat_size);
1066 inode->i_blocks = attr->cat_blocks;
1068 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
1069 LTIME_S(inode->i_atime) = lvb.lvb_atime;
1070 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
1072 ll_inode_size_unlock(inode);
1077 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
1080 struct obdo obdo = { 0 };
1083 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
1085 st->st_size = obdo.o_size;
1086 st->st_blocks = obdo.o_blocks;
1087 st->st_mtime = obdo.o_mtime;
1088 st->st_atime = obdo.o_atime;
1089 st->st_ctime = obdo.o_ctime;
1094 static bool file_is_noatime(const struct file *file)
1096 const struct vfsmount *mnt = file->f_path.mnt;
1097 const struct inode *inode = file->f_path.dentry->d_inode;
1099 /* Adapted from file_accessed() and touch_atime().*/
1100 if (file->f_flags & O_NOATIME)
1103 if (inode->i_flags & S_NOATIME)
1106 if (IS_NOATIME(inode))
1109 if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
1112 if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
1115 if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
1121 static void ll_io_init(struct cl_io *io, const struct file *file, int write)
1123 struct inode *inode = file->f_dentry->d_inode;
1125 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
1127 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
1128 io->u.ci_wr.wr_sync = file->f_flags & O_SYNC ||
1129 file->f_flags & O_DIRECT ||
1132 io->ci_obj = ll_i2info(inode)->lli_clob;
1133 io->ci_lockreq = CILR_MAYBE;
1134 if (ll_file_nolock(file)) {
1135 io->ci_lockreq = CILR_NEVER;
1136 io->ci_no_srvlock = 1;
1137 } else if (file->f_flags & O_APPEND) {
1138 io->ci_lockreq = CILR_MANDATORY;
1141 io->ci_noatime = file_is_noatime(file);
1145 ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
1146 struct file *file, enum cl_io_type iot,
1147 loff_t *ppos, size_t count)
1149 struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
1150 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1155 CDEBUG(D_VFSTRACE, "file: %s, type: %d ppos: "LPU64", count: %zd\n",
1156 file->f_dentry->d_name.name, iot, *ppos, count);
1159 io = ccc_env_thread_io(env);
1160 ll_io_init(io, file, iot == CIT_WRITE);
1162 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
1163 struct vvp_io *vio = vvp_env_io(env);
1164 struct ccc_io *cio = ccc_env_io(env);
1165 int write_mutex_locked = 0;
1167 cio->cui_fd = LUSTRE_FPRIVATE(file);
1168 vio->cui_io_subtype = args->via_io_subtype;
1170 switch (vio->cui_io_subtype) {
1172 cio->cui_iov = args->u.normal.via_iov;
1173 cio->cui_nrsegs = args->u.normal.via_nrsegs;
1174 cio->cui_tot_nrsegs = cio->cui_nrsegs;
1175 cio->cui_iocb = args->u.normal.via_iocb;
1176 if ((iot == CIT_WRITE) &&
1177 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1178 if (mutex_lock_interruptible(&lli->
1180 GOTO(out, result = -ERESTARTSYS);
1181 write_mutex_locked = 1;
1183 down_read(&lli->lli_trunc_sem);
1186 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
1187 vio->u.splice.cui_flags = args->u.splice.via_flags;
1190 CERROR("Unknow IO type - %u\n", vio->cui_io_subtype);
1194 ll_cl_add(file, env, io);
1195 result = cl_io_loop(env, io);
1196 ll_cl_remove(file, env);
1198 if (args->via_io_subtype == IO_NORMAL)
1199 up_read(&lli->lli_trunc_sem);
1200 if (write_mutex_locked)
1201 mutex_unlock(&lli->lli_write_mutex);
1203 /* cl_io_rw_init() handled IO */
1204 result = io->ci_result;
1207 if (io->ci_nob > 0) {
1208 result = io->ci_nob;
1209 *ppos = io->u.ci_wr.wr.crw_pos;
1213 cl_io_fini(env, io);
1214 /* If any bit been read/written (result != 0), we just return
1215 * short read/write instead of restart io. */
1216 if ((result == 0 || result == -ENODATA) && io->ci_need_restart) {
1217 CDEBUG(D_VFSTRACE, "Restart %s on %s from %lld, count:%zd\n",
1218 iot == CIT_READ ? "read" : "write",
1219 file->f_dentry->d_name.name, *ppos, count);
1220 LASSERTF(io->ci_nob == 0, "%zd\n", io->ci_nob);
1224 if (iot == CIT_READ) {
1226 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
1227 LPROC_LL_READ_BYTES, result);
1228 } else if (iot == CIT_WRITE) {
1230 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
1231 LPROC_LL_WRITE_BYTES, result);
1232 fd->fd_write_failed = false;
1233 } else if (result != -ERESTARTSYS) {
1234 fd->fd_write_failed = true;
1237 CDEBUG(D_VFSTRACE, "iot: %d, result: %zd\n", iot, result);
1244 * XXX: exact copy from kernel code (__generic_file_aio_write_nolock)
1246 static int ll_file_get_iov_count(const struct iovec *iov,
1247 unsigned long *nr_segs, size_t *count)
1252 for (seg = 0; seg < *nr_segs; seg++) {
1253 const struct iovec *iv = &iov[seg];
1256 * If any segment has a negative length, or the cumulative
1257 * length ever wraps negative then return -EINVAL.
1260 if (unlikely((ssize_t)(cnt|iv->iov_len) < 0))
1262 if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
1267 cnt -= iv->iov_len; /* This segment is no good */
1274 static ssize_t ll_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
1275 unsigned long nr_segs, loff_t pos)
1278 struct vvp_io_args *args;
1284 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1288 env = cl_env_get(&refcheck);
1290 RETURN(PTR_ERR(env));
1292 args = vvp_env_args(env, IO_NORMAL);
1293 args->u.normal.via_iov = (struct iovec *)iov;
1294 args->u.normal.via_nrsegs = nr_segs;
1295 args->u.normal.via_iocb = iocb;
1297 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1298 &iocb->ki_pos, count);
1299 cl_env_put(env, &refcheck);
1303 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
1307 struct iovec *local_iov;
1308 struct kiocb *kiocb;
1313 env = cl_env_get(&refcheck);
1315 RETURN(PTR_ERR(env));
1317 local_iov = &vvp_env_info(env)->vti_local_iov;
1318 kiocb = &vvp_env_info(env)->vti_kiocb;
1319 local_iov->iov_base = (void __user *)buf;
1320 local_iov->iov_len = count;
1321 init_sync_kiocb(kiocb, file);
1322 kiocb->ki_pos = *ppos;
1323 #ifdef HAVE_KIOCB_KI_LEFT
1324 kiocb->ki_left = count;
1326 kiocb->ki_nbytes = count;
1329 result = ll_file_aio_read(kiocb, local_iov, 1, kiocb->ki_pos);
1330 *ppos = kiocb->ki_pos;
1332 cl_env_put(env, &refcheck);
1337 * Write to a file (through the page cache).
1340 static ssize_t ll_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
1341 unsigned long nr_segs, loff_t pos)
1344 struct vvp_io_args *args;
1350 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1354 env = cl_env_get(&refcheck);
1356 RETURN(PTR_ERR(env));
1358 args = vvp_env_args(env, IO_NORMAL);
1359 args->u.normal.via_iov = (struct iovec *)iov;
1360 args->u.normal.via_nrsegs = nr_segs;
1361 args->u.normal.via_iocb = iocb;
1363 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1364 &iocb->ki_pos, count);
1365 cl_env_put(env, &refcheck);
1369 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1373 struct iovec *local_iov;
1374 struct kiocb *kiocb;
1379 env = cl_env_get(&refcheck);
1381 RETURN(PTR_ERR(env));
1383 local_iov = &vvp_env_info(env)->vti_local_iov;
1384 kiocb = &vvp_env_info(env)->vti_kiocb;
1385 local_iov->iov_base = (void __user *)buf;
1386 local_iov->iov_len = count;
1387 init_sync_kiocb(kiocb, file);
1388 kiocb->ki_pos = *ppos;
1389 #ifdef HAVE_KIOCB_KI_LEFT
1390 kiocb->ki_left = count;
1392 kiocb->ki_nbytes = count;
1395 result = ll_file_aio_write(kiocb, local_iov, 1, kiocb->ki_pos);
1396 *ppos = kiocb->ki_pos;
1398 cl_env_put(env, &refcheck);
1403 * Send file content (through pagecache) somewhere with helper
1405 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1406 struct pipe_inode_info *pipe, size_t count,
1410 struct vvp_io_args *args;
1415 env = cl_env_get(&refcheck);
1417 RETURN(PTR_ERR(env));
1419 args = vvp_env_args(env, IO_SPLICE);
1420 args->u.splice.via_pipe = pipe;
1421 args->u.splice.via_flags = flags;
1423 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1424 cl_env_put(env, &refcheck);
1428 static int ll_lov_recreate(struct inode *inode, struct ost_id *oi,
1431 struct obd_export *exp = ll_i2dtexp(inode);
1432 struct obd_trans_info oti = { 0 };
1433 struct obdo *oa = NULL;
1436 struct lov_stripe_md *lsm = NULL, *lsm2;
1443 lsm = ccc_inode_lsm_get(inode);
1444 if (!lsm_has_objects(lsm))
1445 GOTO(out, rc = -ENOENT);
1447 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1448 (lsm->lsm_stripe_count));
1450 OBD_ALLOC_LARGE(lsm2, lsm_size);
1452 GOTO(out, rc = -ENOMEM);
1455 oa->o_nlink = ost_idx;
1456 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1457 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1458 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1459 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1460 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
1461 memcpy(lsm2, lsm, lsm_size);
1462 ll_inode_size_lock(inode);
1463 rc = obd_create(NULL, exp, oa, &lsm2, &oti);
1464 ll_inode_size_unlock(inode);
1466 OBD_FREE_LARGE(lsm2, lsm_size);
1469 ccc_inode_lsm_put(inode, lsm);
1474 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1476 struct ll_recreate_obj ucreat;
1480 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1483 if (copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1487 ostid_set_seq_mdt0(&oi);
1488 ostid_set_id(&oi, ucreat.lrc_id);
1489 RETURN(ll_lov_recreate(inode, &oi, ucreat.lrc_ost_idx));
1492 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1499 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1502 if (copy_from_user(&fid, (struct lu_fid *)arg, sizeof(fid)))
1505 fid_to_ostid(&fid, &oi);
1506 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1507 RETURN(ll_lov_recreate(inode, &oi, ost_idx));
1510 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
1511 __u64 flags, struct lov_user_md *lum,
1514 struct lov_stripe_md *lsm = NULL;
1515 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1519 lsm = ccc_inode_lsm_get(inode);
1521 ccc_inode_lsm_put(inode, lsm);
1522 CDEBUG(D_IOCTL, "stripe already exists for inode "DFID"\n",
1523 PFID(ll_inode2fid(inode)));
1524 GOTO(out, rc = -EEXIST);
1527 ll_inode_size_lock(inode);
1528 oit.it_flags |= MDS_OPEN_BY_FID;
1529 rc = ll_intent_file_open(file, lum, lum_size, &oit);
1531 GOTO(out_unlock, rc);
1532 rc = oit.d.lustre.it_status;
1534 GOTO(out_req_free, rc);
1536 ll_release_openhandle(file->f_dentry, &oit);
1539 ll_inode_size_unlock(inode);
1540 ll_intent_release(&oit);
1541 ccc_inode_lsm_put(inode, lsm);
1543 cl_lov_delay_create_clear(&file->f_flags);
1546 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1550 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1551 struct lov_mds_md **lmmp, int *lmm_size,
1552 struct ptlrpc_request **request)
1554 struct ll_sb_info *sbi = ll_i2sbi(inode);
1555 struct mdt_body *body;
1556 struct lov_mds_md *lmm = NULL;
1557 struct ptlrpc_request *req = NULL;
1558 struct md_op_data *op_data;
1561 rc = ll_get_default_mdsize(sbi, &lmmsize);
1565 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1566 strlen(filename), lmmsize,
1567 LUSTRE_OPC_ANY, NULL);
1568 if (IS_ERR(op_data))
1569 RETURN(PTR_ERR(op_data));
1571 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1572 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1573 ll_finish_md_op_data(op_data);
1575 CDEBUG(D_INFO, "md_getattr_name failed "
1576 "on %s: rc %d\n", filename, rc);
1580 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1581 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1583 lmmsize = body->mbo_eadatasize;
1585 if (!(body->mbo_valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1587 GOTO(out, rc = -ENODATA);
1590 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1591 LASSERT(lmm != NULL);
1593 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1594 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1595 GOTO(out, rc = -EPROTO);
1599 * This is coming from the MDS, so is probably in
1600 * little endian. We convert it to host endian before
1601 * passing it to userspace.
1603 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1606 stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1607 if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
1610 /* if function called for directory - we should
1611 * avoid swab not existent lsm objects */
1612 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1613 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1614 if (S_ISREG(body->mbo_mode))
1615 lustre_swab_lov_user_md_objects(
1616 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1618 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1619 lustre_swab_lov_user_md_v3(
1620 (struct lov_user_md_v3 *)lmm);
1621 if (S_ISREG(body->mbo_mode))
1622 lustre_swab_lov_user_md_objects(
1623 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1630 *lmm_size = lmmsize;
1635 static int ll_lov_setea(struct inode *inode, struct file *file,
1638 __u64 flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1639 struct lov_user_md *lump;
1640 int lum_size = sizeof(struct lov_user_md) +
1641 sizeof(struct lov_user_ost_data);
1645 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1648 OBD_ALLOC_LARGE(lump, lum_size);
1652 if (copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1653 OBD_FREE_LARGE(lump, lum_size);
1657 rc = ll_lov_setstripe_ea_info(inode, file, flags, lump, lum_size);
1659 OBD_FREE_LARGE(lump, lum_size);
1663 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1666 struct lov_user_md_v3 lumv3;
1667 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1668 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1669 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1671 __u64 flags = FMODE_WRITE;
1674 /* first try with v1 which is smaller than v3 */
1675 lum_size = sizeof(struct lov_user_md_v1);
1676 if (copy_from_user(lumv1, lumv1p, lum_size))
1679 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1680 lum_size = sizeof(struct lov_user_md_v3);
1681 if (copy_from_user(&lumv3, lumv3p, lum_size))
1685 rc = ll_lov_setstripe_ea_info(inode, file, flags, lumv1, lum_size);
1687 struct lov_stripe_md *lsm;
1690 put_user(0, &lumv1p->lmm_stripe_count);
1692 ll_layout_refresh(inode, &gen);
1693 lsm = ccc_inode_lsm_get(inode);
1694 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1695 0, lsm, (void *)arg);
1696 ccc_inode_lsm_put(inode, lsm);
1701 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1703 struct lov_stripe_md *lsm;
1707 lsm = ccc_inode_lsm_get(inode);
1709 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
1711 ccc_inode_lsm_put(inode, lsm);
1716 ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1718 struct ll_inode_info *lli = ll_i2info(inode);
1719 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1720 struct ccc_grouplock grouplock;
1724 if (ll_file_nolock(file))
1725 RETURN(-EOPNOTSUPP);
1727 spin_lock(&lli->lli_lock);
1728 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1729 CWARN("group lock already existed with gid %lu\n",
1730 fd->fd_grouplock.cg_gid);
1731 spin_unlock(&lli->lli_lock);
1734 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1735 spin_unlock(&lli->lli_lock);
1737 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1738 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1742 spin_lock(&lli->lli_lock);
1743 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1744 spin_unlock(&lli->lli_lock);
1745 CERROR("another thread just won the race\n");
1746 cl_put_grouplock(&grouplock);
1750 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1751 fd->fd_grouplock = grouplock;
1752 spin_unlock(&lli->lli_lock);
1754 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1758 int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1760 struct ll_inode_info *lli = ll_i2info(inode);
1761 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1762 struct ccc_grouplock grouplock;
1765 spin_lock(&lli->lli_lock);
1766 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1767 spin_unlock(&lli->lli_lock);
1768 CWARN("no group lock held\n");
1771 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1773 if (fd->fd_grouplock.cg_gid != arg) {
1774 CWARN("group lock %lu doesn't match current id %lu\n",
1775 arg, fd->fd_grouplock.cg_gid);
1776 spin_unlock(&lli->lli_lock);
1780 grouplock = fd->fd_grouplock;
1781 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1782 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1783 spin_unlock(&lli->lli_lock);
1785 cl_put_grouplock(&grouplock);
1786 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1791 * Close inode open handle
1793 * \param dentry [in] dentry which contains the inode
1794 * \param it [in,out] intent which contains open info and result
1797 * \retval <0 failure
1799 int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
1801 struct inode *inode = dentry->d_inode;
1802 struct obd_client_handle *och;
1808 /* Root ? Do nothing. */
1809 if (dentry->d_inode->i_sb->s_root == dentry)
1812 /* No open handle to close? Move away */
1813 if (!it_disposition(it, DISP_OPEN_OPEN))
1816 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1818 OBD_ALLOC(och, sizeof(*och));
1820 GOTO(out, rc = -ENOMEM);
1822 ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
1824 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1827 /* this one is in place of ll_file_open */
1828 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
1829 ptlrpc_req_finished(it->d.lustre.it_data);
1830 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1836 * Get size for inode for which FIEMAP mapping is requested.
1837 * Make the FIEMAP get_info call and returns the result.
1839 static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1842 struct obd_export *exp = ll_i2dtexp(inode);
1843 struct lov_stripe_md *lsm = NULL;
1844 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1845 __u32 vallen = num_bytes;
1849 /* Checks for fiemap flags */
1850 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1851 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1855 /* Check for FIEMAP_FLAG_SYNC */
1856 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1857 rc = filemap_fdatawrite(inode->i_mapping);
1862 lsm = ccc_inode_lsm_get(inode);
1866 /* If the stripe_count > 1 and the application does not understand
1867 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1869 if (lsm->lsm_stripe_count > 1 &&
1870 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER))
1871 GOTO(out, rc = -EOPNOTSUPP);
1873 fm_key.oa.o_oi = lsm->lsm_oi;
1874 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1876 obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
1877 obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
1878 /* If filesize is 0, then there would be no objects for mapping */
1879 if (fm_key.oa.o_size == 0) {
1880 fiemap->fm_mapped_extents = 0;
1884 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1886 rc = obd_get_info(NULL, exp, sizeof(fm_key), &fm_key, &vallen,
1889 CERROR("obd_get_info failed: rc = %d\n", rc);
1892 ccc_inode_lsm_put(inode, lsm);
1896 int ll_fid2path(struct inode *inode, void __user *arg)
1898 struct obd_export *exp = ll_i2mdexp(inode);
1899 const struct getinfo_fid2path __user *gfin = arg;
1901 struct getinfo_fid2path *gfout;
1907 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
1908 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
1911 /* Only need to get the buflen */
1912 if (get_user(pathlen, &gfin->gf_pathlen))
1915 outsize = sizeof(*gfout) + pathlen;
1916 OBD_ALLOC(gfout, outsize);
1920 if (copy_from_user(gfout, arg, sizeof(*gfout)))
1921 GOTO(gf_free, rc = -EFAULT);
1923 /* Call mdc_iocontrol */
1924 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1928 if (copy_to_user(arg, gfout, outsize))
1932 OBD_FREE(gfout, outsize);
1936 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1938 struct ll_user_fiemap *fiemap_s;
1939 size_t num_bytes, ret_bytes;
1940 unsigned int extent_count;
1943 /* Get the extent count so we can calculate the size of
1944 * required fiemap buffer */
1945 if (get_user(extent_count,
1946 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1948 num_bytes = sizeof(*fiemap_s) + (extent_count *
1949 sizeof(struct ll_fiemap_extent));
1951 OBD_ALLOC_LARGE(fiemap_s, num_bytes);
1952 if (fiemap_s == NULL)
1955 /* get the fiemap value */
1956 if (copy_from_user(fiemap_s, (struct ll_user_fiemap __user *)arg,
1958 GOTO(error, rc = -EFAULT);
1960 /* If fm_extent_count is non-zero, read the first extent since
1961 * it is used to calculate end_offset and device from previous
1964 if (copy_from_user(&fiemap_s->fm_extents[0],
1965 (char __user *)arg + sizeof(*fiemap_s),
1966 sizeof(struct ll_fiemap_extent)))
1967 GOTO(error, rc = -EFAULT);
1970 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1974 ret_bytes = sizeof(struct ll_user_fiemap);
1976 if (extent_count != 0)
1977 ret_bytes += (fiemap_s->fm_mapped_extents *
1978 sizeof(struct ll_fiemap_extent));
1980 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1984 OBD_FREE_LARGE(fiemap_s, num_bytes);
1989 * Read the data_version for inode.
1991 * This value is computed using stripe object version on OST.
1992 * Version is computed using server side locking.
1994 * @param sync if do sync on the OST side;
1996 * LL_DV_RD_FLUSH: flush dirty pages, LCK_PR on OSTs
1997 * LL_DV_WR_FLUSH: drop all caching pages, LCK_PW on OSTs
1999 int ll_data_version(struct inode *inode, __u64 *data_version, int flags)
2001 struct lov_stripe_md *lsm = NULL;
2002 struct ll_sb_info *sbi = ll_i2sbi(inode);
2003 struct obdo *obdo = NULL;
2007 /* If no stripe, we consider version is 0. */
2008 lsm = ccc_inode_lsm_get(inode);
2009 if (!lsm_has_objects(lsm)) {
2011 CDEBUG(D_INODE, "No object for inode\n");
2015 OBD_ALLOC_PTR(obdo);
2017 GOTO(out, rc = -ENOMEM);
2019 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, flags);
2021 if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
2024 *data_version = obdo->o_data_version;
2030 ccc_inode_lsm_put(inode, lsm);
2035 * Trigger a HSM release request for the provided inode.
2037 int ll_hsm_release(struct inode *inode)
2039 struct cl_env_nest nest;
2041 struct obd_client_handle *och = NULL;
2042 __u64 data_version = 0;
2046 CDEBUG(D_INODE, "%s: Releasing file "DFID".\n",
2047 ll_get_fsname(inode->i_sb, NULL, 0),
2048 PFID(&ll_i2info(inode)->lli_fid));
2050 och = ll_lease_open(inode, NULL, FMODE_WRITE, MDS_OPEN_RELEASE);
2052 GOTO(out, rc = PTR_ERR(och));
2054 /* Grab latest data_version and [am]time values */
2055 rc = ll_data_version(inode, &data_version, LL_DV_WR_FLUSH);
2059 env = cl_env_nested_get(&nest);
2061 GOTO(out, rc = PTR_ERR(env));
2063 ll_merge_lvb(env, inode);
2064 cl_env_nested_put(&nest, env);
2066 /* Release the file.
2067 * NB: lease lock handle is released in mdc_hsm_release_pack() because
2068 * we still need it to pack l_remote_handle to MDT. */
2069 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
2075 if (och != NULL && !IS_ERR(och)) /* close the file */
2076 ll_lease_close(och, inode, NULL);
2081 struct ll_swap_stack {
2082 struct iattr ia1, ia2;
2084 struct inode *inode1, *inode2;
2085 bool check_dv1, check_dv2;
2088 static int ll_swap_layouts(struct file *file1, struct file *file2,
2089 struct lustre_swap_layouts *lsl)
2091 struct mdc_swap_layouts msl;
2092 struct md_op_data *op_data;
2095 struct ll_swap_stack *llss = NULL;
2098 OBD_ALLOC_PTR(llss);
2102 llss->inode1 = file1->f_dentry->d_inode;
2103 llss->inode2 = file2->f_dentry->d_inode;
2105 if (!S_ISREG(llss->inode2->i_mode))
2106 GOTO(free, rc = -EINVAL);
2108 if (inode_permission(llss->inode1, MAY_WRITE) ||
2109 inode_permission(llss->inode2, MAY_WRITE))
2110 GOTO(free, rc = -EPERM);
2112 if (llss->inode2->i_sb != llss->inode1->i_sb)
2113 GOTO(free, rc = -EXDEV);
2115 /* we use 2 bool because it is easier to swap than 2 bits */
2116 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV1)
2117 llss->check_dv1 = true;
2119 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV2)
2120 llss->check_dv2 = true;
2122 /* we cannot use lsl->sl_dvX directly because we may swap them */
2123 llss->dv1 = lsl->sl_dv1;
2124 llss->dv2 = lsl->sl_dv2;
2126 rc = lu_fid_cmp(ll_inode2fid(llss->inode1), ll_inode2fid(llss->inode2));
2127 if (rc == 0) /* same file, done! */
2130 if (rc < 0) { /* sequentialize it */
2131 swap(llss->inode1, llss->inode2);
2133 swap(llss->dv1, llss->dv2);
2134 swap(llss->check_dv1, llss->check_dv2);
2138 if (gid != 0) { /* application asks to flush dirty cache */
2139 rc = ll_get_grouplock(llss->inode1, file1, gid);
2143 rc = ll_get_grouplock(llss->inode2, file2, gid);
2145 ll_put_grouplock(llss->inode1, file1, gid);
2150 /* to be able to restore mtime and atime after swap
2151 * we need to first save them */
2153 (SWAP_LAYOUTS_KEEP_MTIME | SWAP_LAYOUTS_KEEP_ATIME)) {
2154 llss->ia1.ia_mtime = llss->inode1->i_mtime;
2155 llss->ia1.ia_atime = llss->inode1->i_atime;
2156 llss->ia1.ia_valid = ATTR_MTIME | ATTR_ATIME;
2157 llss->ia2.ia_mtime = llss->inode2->i_mtime;
2158 llss->ia2.ia_atime = llss->inode2->i_atime;
2159 llss->ia2.ia_valid = ATTR_MTIME | ATTR_ATIME;
2162 /* ultimate check, before swaping the layouts we check if
2163 * dataversion has changed (if requested) */
2164 if (llss->check_dv1) {
2165 rc = ll_data_version(llss->inode1, &dv, 0);
2168 if (dv != llss->dv1)
2169 GOTO(putgl, rc = -EAGAIN);
2172 if (llss->check_dv2) {
2173 rc = ll_data_version(llss->inode2, &dv, 0);
2176 if (dv != llss->dv2)
2177 GOTO(putgl, rc = -EAGAIN);
2180 /* struct md_op_data is used to send the swap args to the mdt
2181 * only flags is missing, so we use struct mdc_swap_layouts
2182 * through the md_op_data->op_data */
2183 /* flags from user space have to be converted before they are send to
2184 * server, no flag is sent today, they are only used on the client */
2187 op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0,
2188 0, LUSTRE_OPC_ANY, &msl);
2189 if (IS_ERR(op_data))
2190 GOTO(free, rc = PTR_ERR(op_data));
2192 rc = obd_iocontrol(LL_IOC_LOV_SWAP_LAYOUTS, ll_i2mdexp(llss->inode1),
2193 sizeof(*op_data), op_data, NULL);
2194 ll_finish_md_op_data(op_data);
2198 ll_put_grouplock(llss->inode2, file2, gid);
2199 ll_put_grouplock(llss->inode1, file1, gid);
2202 /* rc can be set from obd_iocontrol() or from a GOTO(putgl, ...) */
2206 /* clear useless flags */
2207 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_MTIME)) {
2208 llss->ia1.ia_valid &= ~ATTR_MTIME;
2209 llss->ia2.ia_valid &= ~ATTR_MTIME;
2212 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_ATIME)) {
2213 llss->ia1.ia_valid &= ~ATTR_ATIME;
2214 llss->ia2.ia_valid &= ~ATTR_ATIME;
2217 /* update time if requested */
2219 if (llss->ia2.ia_valid != 0) {
2220 mutex_lock(&llss->inode1->i_mutex);
2221 rc = ll_setattr(file1->f_dentry, &llss->ia2);
2222 mutex_unlock(&llss->inode1->i_mutex);
2225 if (llss->ia1.ia_valid != 0) {
2228 mutex_lock(&llss->inode2->i_mutex);
2229 rc1 = ll_setattr(file2->f_dentry, &llss->ia1);
2230 mutex_unlock(&llss->inode2->i_mutex);
2242 static int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss)
2244 struct md_op_data *op_data;
2247 /* Non-root users are forbidden to set or clear flags which are
2248 * NOT defined in HSM_USER_MASK. */
2249 if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
2250 !cfs_capable(CFS_CAP_SYS_ADMIN))
2253 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2254 LUSTRE_OPC_ANY, hss);
2255 if (IS_ERR(op_data))
2256 RETURN(PTR_ERR(op_data));
2258 rc = obd_iocontrol(LL_IOC_HSM_STATE_SET, ll_i2mdexp(inode),
2259 sizeof(*op_data), op_data, NULL);
2261 ll_finish_md_op_data(op_data);
2266 static int ll_hsm_import(struct inode *inode, struct file *file,
2267 struct hsm_user_import *hui)
2269 struct hsm_state_set *hss = NULL;
2270 struct iattr *attr = NULL;
2274 if (!S_ISREG(inode->i_mode))
2280 GOTO(out, rc = -ENOMEM);
2282 hss->hss_valid = HSS_SETMASK | HSS_ARCHIVE_ID;
2283 hss->hss_archive_id = hui->hui_archive_id;
2284 hss->hss_setmask = HS_ARCHIVED | HS_EXISTS | HS_RELEASED;
2285 rc = ll_hsm_state_set(inode, hss);
2289 OBD_ALLOC_PTR(attr);
2291 GOTO(out, rc = -ENOMEM);
2293 attr->ia_mode = hui->hui_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
2294 attr->ia_mode |= S_IFREG;
2295 attr->ia_uid = make_kuid(&init_user_ns, hui->hui_uid);
2296 attr->ia_gid = make_kgid(&init_user_ns, hui->hui_gid);
2297 attr->ia_size = hui->hui_size;
2298 attr->ia_mtime.tv_sec = hui->hui_mtime;
2299 attr->ia_mtime.tv_nsec = hui->hui_mtime_ns;
2300 attr->ia_atime.tv_sec = hui->hui_atime;
2301 attr->ia_atime.tv_nsec = hui->hui_atime_ns;
2303 attr->ia_valid = ATTR_SIZE | ATTR_MODE | ATTR_FORCE |
2304 ATTR_UID | ATTR_GID |
2305 ATTR_MTIME | ATTR_MTIME_SET |
2306 ATTR_ATIME | ATTR_ATIME_SET;
2308 rc = ll_setattr_raw(file->f_dentry, attr, true);
2323 ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2325 struct inode *inode = file->f_dentry->d_inode;
2326 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2330 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%x\n",
2331 PFID(ll_inode2fid(inode)), inode, cmd);
2332 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
2334 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
2335 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
2339 case LL_IOC_GETFLAGS:
2340 /* Get the current value of the file flags */
2341 return put_user(fd->fd_flags, (int *)arg);
2342 case LL_IOC_SETFLAGS:
2343 case LL_IOC_CLRFLAGS:
2344 /* Set or clear specific file flags */
2345 /* XXX This probably needs checks to ensure the flags are
2346 * not abused, and to handle any flag side effects.
2348 if (get_user(flags, (int *) arg))
2351 if (cmd == LL_IOC_SETFLAGS) {
2352 if ((flags & LL_FILE_IGNORE_LOCK) &&
2353 !(file->f_flags & O_DIRECT)) {
2354 CERROR("%s: unable to disable locking on "
2355 "non-O_DIRECT file\n", current->comm);
2359 fd->fd_flags |= flags;
2361 fd->fd_flags &= ~flags;
2364 case LL_IOC_LOV_SETSTRIPE:
2365 RETURN(ll_lov_setstripe(inode, file, arg));
2366 case LL_IOC_LOV_SETEA:
2367 RETURN(ll_lov_setea(inode, file, arg));
2368 case LL_IOC_LOV_SWAP_LAYOUTS: {
2370 struct lustre_swap_layouts lsl;
2372 if (copy_from_user(&lsl, (char *)arg,
2373 sizeof(struct lustre_swap_layouts)))
2376 if ((file->f_flags & O_ACCMODE) == 0) /* O_RDONLY */
2379 file2 = fget(lsl.sl_fd);
2384 if ((file2->f_flags & O_ACCMODE) != 0) /* O_WRONLY or O_RDWR */
2385 rc = ll_swap_layouts(file, file2, &lsl);
2389 case LL_IOC_LOV_GETSTRIPE:
2390 RETURN(ll_lov_getstripe(inode, arg));
2391 case LL_IOC_RECREATE_OBJ:
2392 RETURN(ll_lov_recreate_obj(inode, arg));
2393 case LL_IOC_RECREATE_FID:
2394 RETURN(ll_lov_recreate_fid(inode, arg));
2395 case FSFILT_IOC_FIEMAP:
2396 RETURN(ll_ioctl_fiemap(inode, arg));
2397 case FSFILT_IOC_GETFLAGS:
2398 case FSFILT_IOC_SETFLAGS:
2399 RETURN(ll_iocontrol(inode, file, cmd, arg));
2400 case FSFILT_IOC_GETVERSION_OLD:
2401 case FSFILT_IOC_GETVERSION:
2402 RETURN(put_user(inode->i_generation, (int *)arg));
2403 case LL_IOC_GROUP_LOCK:
2404 RETURN(ll_get_grouplock(inode, file, arg));
2405 case LL_IOC_GROUP_UNLOCK:
2406 RETURN(ll_put_grouplock(inode, file, arg));
2407 case IOC_OBD_STATFS:
2408 RETURN(ll_obd_statfs(inode, (void *)arg));
2410 /* We need to special case any other ioctls we want to handle,
2411 * to send them to the MDS/OST as appropriate and to properly
2412 * network encode the arg field.
2413 case FSFILT_IOC_SETVERSION_OLD:
2414 case FSFILT_IOC_SETVERSION:
2416 case LL_IOC_FLUSHCTX:
2417 RETURN(ll_flush_ctx(inode));
2418 case LL_IOC_PATH2FID: {
2419 if (copy_to_user((void *)arg, ll_inode2fid(inode),
2420 sizeof(struct lu_fid)))
2425 case OBD_IOC_FID2PATH:
2426 RETURN(ll_fid2path(inode, (void *)arg));
2427 case LL_IOC_DATA_VERSION: {
2428 struct ioc_data_version idv;
2431 if (copy_from_user(&idv, (char *)arg, sizeof(idv)))
2434 idv.idv_flags &= LL_DV_RD_FLUSH | LL_DV_WR_FLUSH;
2435 rc = ll_data_version(inode, &idv.idv_version, idv.idv_flags);
2437 if (rc == 0 && copy_to_user((char *) arg, &idv, sizeof(idv)))
2443 case LL_IOC_GET_MDTIDX: {
2446 mdtidx = ll_get_mdt_idx(inode);
2450 if (put_user((int)mdtidx, (int*)arg))
2455 case OBD_IOC_GETDTNAME:
2456 case OBD_IOC_GETMDNAME:
2457 RETURN(ll_get_obd_name(inode, cmd, arg));
2458 case LL_IOC_HSM_STATE_GET: {
2459 struct md_op_data *op_data;
2460 struct hsm_user_state *hus;
2467 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2468 LUSTRE_OPC_ANY, hus);
2469 if (IS_ERR(op_data)) {
2471 RETURN(PTR_ERR(op_data));
2474 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
2477 if (copy_to_user((void *)arg, hus, sizeof(*hus)))
2480 ll_finish_md_op_data(op_data);
2484 case LL_IOC_HSM_STATE_SET: {
2485 struct hsm_state_set *hss;
2492 if (copy_from_user(hss, (char *)arg, sizeof(*hss))) {
2497 rc = ll_hsm_state_set(inode, hss);
2502 case LL_IOC_HSM_ACTION: {
2503 struct md_op_data *op_data;
2504 struct hsm_current_action *hca;
2511 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2512 LUSTRE_OPC_ANY, hca);
2513 if (IS_ERR(op_data)) {
2515 RETURN(PTR_ERR(op_data));
2518 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
2521 if (copy_to_user((char *)arg, hca, sizeof(*hca)))
2524 ll_finish_md_op_data(op_data);
2528 case LL_IOC_SET_LEASE: {
2529 struct ll_inode_info *lli = ll_i2info(inode);
2530 struct obd_client_handle *och = NULL;
2536 if (!(file->f_mode & FMODE_WRITE))
2541 if (!(file->f_mode & FMODE_READ))
2546 mutex_lock(&lli->lli_och_mutex);
2547 if (fd->fd_lease_och != NULL) {
2548 och = fd->fd_lease_och;
2549 fd->fd_lease_och = NULL;
2551 mutex_unlock(&lli->lli_och_mutex);
2554 mode = och->och_flags &(FMODE_READ|FMODE_WRITE);
2555 rc = ll_lease_close(och, inode, &lease_broken);
2556 if (rc == 0 && lease_broken)
2562 /* return the type of lease or error */
2563 RETURN(rc < 0 ? rc : (int)mode);
2568 CDEBUG(D_INODE, "Set lease with mode %d\n", mode);
2570 /* apply for lease */
2571 och = ll_lease_open(inode, file, mode, 0);
2573 RETURN(PTR_ERR(och));
2576 mutex_lock(&lli->lli_och_mutex);
2577 if (fd->fd_lease_och == NULL) {
2578 fd->fd_lease_och = och;
2581 mutex_unlock(&lli->lli_och_mutex);
2583 /* impossible now that only excl is supported for now */
2584 ll_lease_close(och, inode, &lease_broken);
2589 case LL_IOC_GET_LEASE: {
2590 struct ll_inode_info *lli = ll_i2info(inode);
2591 struct ldlm_lock *lock = NULL;
2594 mutex_lock(&lli->lli_och_mutex);
2595 if (fd->fd_lease_och != NULL) {
2596 struct obd_client_handle *och = fd->fd_lease_och;
2598 lock = ldlm_handle2lock(&och->och_lease_handle);
2600 lock_res_and_lock(lock);
2601 if (!ldlm_is_cancel(lock))
2602 rc = och->och_flags &
2603 (FMODE_READ | FMODE_WRITE);
2604 unlock_res_and_lock(lock);
2605 LDLM_LOCK_PUT(lock);
2608 mutex_unlock(&lli->lli_och_mutex);
2611 case LL_IOC_HSM_IMPORT: {
2612 struct hsm_user_import *hui;
2618 if (copy_from_user(hui, (void *)arg, sizeof(*hui))) {
2623 rc = ll_hsm_import(inode, file, hui);
2633 ll_iocontrol_call(inode, file, cmd, arg, &err))
2636 RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
2642 #ifndef HAVE_FILE_LLSEEK_SIZE
2643 static inline loff_t
2644 llseek_execute(struct file *file, loff_t offset, loff_t maxsize)
2646 if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET))
2648 if (offset > maxsize)
2651 if (offset != file->f_pos) {
2652 file->f_pos = offset;
2653 file->f_version = 0;
2659 generic_file_llseek_size(struct file *file, loff_t offset, int origin,
2660 loff_t maxsize, loff_t eof)
2662 struct inode *inode = file->f_dentry->d_inode;
2670 * Here we special-case the lseek(fd, 0, SEEK_CUR)
2671 * position-querying operation. Avoid rewriting the "same"
2672 * f_pos value back to the file because a concurrent read(),
2673 * write() or lseek() might have altered it
2678 * f_lock protects against read/modify/write race with other
2679 * SEEK_CURs. Note that parallel writes and reads behave
2682 mutex_lock(&inode->i_mutex);
2683 offset = llseek_execute(file, file->f_pos + offset, maxsize);
2684 mutex_unlock(&inode->i_mutex);
2688 * In the generic case the entire file is data, so as long as
2689 * offset isn't at the end of the file then the offset is data.
2696 * There is a virtual hole at the end of the file, so as long as
2697 * offset isn't i_size or larger, return i_size.
2705 return llseek_execute(file, offset, maxsize);
2709 static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
2711 struct inode *inode = file->f_dentry->d_inode;
2712 loff_t retval, eof = 0;
2715 retval = offset + ((origin == SEEK_END) ? i_size_read(inode) :
2716 (origin == SEEK_CUR) ? file->f_pos : 0);
2717 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), to=%llu=%#llx(%d)\n",
2718 PFID(ll_inode2fid(inode)), inode, retval, retval,
2720 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
2722 if (origin == SEEK_END || origin == SEEK_HOLE || origin == SEEK_DATA) {
2723 retval = ll_glimpse_size(inode);
2726 eof = i_size_read(inode);
2729 retval = ll_generic_file_llseek_size(file, offset, origin,
2730 ll_file_maxbytes(inode), eof);
2734 static int ll_flush(struct file *file, fl_owner_t id)
2736 struct inode *inode = file->f_dentry->d_inode;
2737 struct ll_inode_info *lli = ll_i2info(inode);
2738 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2741 LASSERT(!S_ISDIR(inode->i_mode));
2743 /* catch async errors that were recorded back when async writeback
2744 * failed for pages in this mapping. */
2745 rc = lli->lli_async_rc;
2746 lli->lli_async_rc = 0;
2747 if (lli->lli_clob != NULL) {
2748 err = lov_read_and_clear_async_rc(lli->lli_clob);
2753 /* The application has been told write failure already.
2754 * Do not report failure again. */
2755 if (fd->fd_write_failed)
2757 return rc ? -EIO : 0;
2761 * Called to make sure a portion of file has been written out.
2762 * if @mode is not CL_FSYNC_LOCAL, it will send OST_SYNC RPCs to OST.
2764 * Return how many pages have been written.
2766 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
2767 enum cl_fsync_mode mode, int ignore_layout)
2769 struct cl_env_nest nest;
2772 struct obd_capa *capa = NULL;
2773 struct cl_fsync_io *fio;
2777 if (mode != CL_FSYNC_NONE && mode != CL_FSYNC_LOCAL &&
2778 mode != CL_FSYNC_DISCARD && mode != CL_FSYNC_ALL)
2781 env = cl_env_nested_get(&nest);
2783 RETURN(PTR_ERR(env));
2785 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
2787 io = ccc_env_thread_io(env);
2788 io->ci_obj = cl_i2info(inode)->lli_clob;
2789 io->ci_ignore_layout = ignore_layout;
2791 /* initialize parameters for sync */
2792 fio = &io->u.ci_fsync;
2793 fio->fi_capa = capa;
2794 fio->fi_start = start;
2796 fio->fi_fid = ll_inode2fid(inode);
2797 fio->fi_mode = mode;
2798 fio->fi_nr_written = 0;
2800 if (cl_io_init(env, io, CIT_FSYNC, io->ci_obj) == 0)
2801 result = cl_io_loop(env, io);
2803 result = io->ci_result;
2805 result = fio->fi_nr_written;
2806 cl_io_fini(env, io);
2807 cl_env_nested_put(&nest, env);
2815 * When dentry is provided (the 'else' case), *file->f_dentry may be
2816 * null and dentry must be used directly rather than pulled from
2817 * *file->f_dentry as is done otherwise.
2820 #ifdef HAVE_FILE_FSYNC_4ARGS
2821 int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
2823 struct dentry *dentry = file->f_dentry;
2824 #elif defined(HAVE_FILE_FSYNC_2ARGS)
2825 int ll_fsync(struct file *file, int datasync)
2827 struct dentry *dentry = file->f_dentry;
2829 loff_t end = LLONG_MAX;
2831 int ll_fsync(struct file *file, struct dentry *dentry, int datasync)
2834 loff_t end = LLONG_MAX;
2836 struct inode *inode = dentry->d_inode;
2837 struct ll_inode_info *lli = ll_i2info(inode);
2838 struct ptlrpc_request *req;
2839 struct obd_capa *oc;
2843 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2844 PFID(ll_inode2fid(inode)), inode);
2845 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
2847 #ifdef HAVE_FILE_FSYNC_4ARGS
2848 rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
2849 mutex_lock(&inode->i_mutex);
2851 /* fsync's caller has already called _fdata{sync,write}, we want
2852 * that IO to finish before calling the osc and mdc sync methods */
2853 rc = filemap_fdatawait(inode->i_mapping);
2856 /* catch async errors that were recorded back when async writeback
2857 * failed for pages in this mapping. */
2858 if (!S_ISDIR(inode->i_mode)) {
2859 err = lli->lli_async_rc;
2860 lli->lli_async_rc = 0;
2863 err = lov_read_and_clear_async_rc(lli->lli_clob);
2868 oc = ll_mdscapa_get(inode);
2869 err = md_fsync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2875 ptlrpc_req_finished(req);
2877 if (S_ISREG(inode->i_mode)) {
2878 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2880 err = cl_sync_file_range(inode, start, end, CL_FSYNC_ALL, 0);
2881 if (rc == 0 && err < 0)
2884 fd->fd_write_failed = true;
2886 fd->fd_write_failed = false;
2889 #ifdef HAVE_FILE_FSYNC_4ARGS
2890 mutex_unlock(&inode->i_mutex);
2896 ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
2898 struct inode *inode = file->f_dentry->d_inode;
2899 struct ll_sb_info *sbi = ll_i2sbi(inode);
2900 struct ldlm_enqueue_info einfo = {
2901 .ei_type = LDLM_FLOCK,
2902 .ei_cb_cp = ldlm_flock_completion_ast,
2903 .ei_cbdata = file_lock,
2905 struct md_op_data *op_data;
2906 struct lustre_handle lockh = {0};
2907 ldlm_policy_data_t flock = {{0}};
2908 int fl_type = file_lock->fl_type;
2914 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID" file_lock=%p\n",
2915 PFID(ll_inode2fid(inode)), file_lock);
2917 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
2919 if (file_lock->fl_flags & FL_FLOCK) {
2920 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
2921 /* flocks are whole-file locks */
2922 flock.l_flock.end = OFFSET_MAX;
2923 /* For flocks owner is determined by the local file desctiptor*/
2924 flock.l_flock.owner = (unsigned long)file_lock->fl_file;
2925 } else if (file_lock->fl_flags & FL_POSIX) {
2926 flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
2927 flock.l_flock.start = file_lock->fl_start;
2928 flock.l_flock.end = file_lock->fl_end;
2932 flock.l_flock.pid = file_lock->fl_pid;
2934 /* Somewhat ugly workaround for svc lockd.
2935 * lockd installs custom fl_lmops->lm_compare_owner that checks
2936 * for the fl_owner to be the same (which it always is on local node
2937 * I guess between lockd processes) and then compares pid.
2938 * As such we assign pid to the owner field to make it all work,
2939 * conflict with normal locks is unlikely since pid space and
2940 * pointer space for current->files are not intersecting */
2941 if (file_lock->fl_lmops && file_lock->fl_lmops->lm_compare_owner)
2942 flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
2946 einfo.ei_mode = LCK_PR;
2949 /* An unlock request may or may not have any relation to
2950 * existing locks so we may not be able to pass a lock handle
2951 * via a normal ldlm_lock_cancel() request. The request may even
2952 * unlock a byte range in the middle of an existing lock. In
2953 * order to process an unlock request we need all of the same
2954 * information that is given with a normal read or write record
2955 * lock request. To avoid creating another ldlm unlock (cancel)
2956 * message we'll treat a LCK_NL flock request as an unlock. */
2957 einfo.ei_mode = LCK_NL;
2960 einfo.ei_mode = LCK_PW;
2963 CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n", fl_type);
2978 flags = LDLM_FL_BLOCK_NOWAIT;
2984 flags = LDLM_FL_TEST_LOCK;
2987 CERROR("unknown fcntl lock command: %d\n", cmd);
2991 /* Save the old mode so that if the mode in the lock changes we
2992 * can decrement the appropriate reader or writer refcount. */
2993 file_lock->fl_type = einfo.ei_mode;
2995 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2996 LUSTRE_OPC_ANY, NULL);
2997 if (IS_ERR(op_data))
2998 RETURN(PTR_ERR(op_data));
3000 CDEBUG(D_DLMTRACE, "inode="DFID", pid=%u, flags="LPX64", mode=%u, "
3001 "start="LPU64", end="LPU64"\n", PFID(ll_inode2fid(inode)),
3002 flock.l_flock.pid, flags, einfo.ei_mode,
3003 flock.l_flock.start, flock.l_flock.end);
3005 rc = md_enqueue(sbi->ll_md_exp, &einfo, &flock, NULL, op_data, &lockh,
3008 /* Restore the file lock type if not TEST lock. */
3009 if (!(flags & LDLM_FL_TEST_LOCK))
3010 file_lock->fl_type = fl_type;
3012 if ((file_lock->fl_flags & FL_FLOCK) &&
3013 (rc == 0 || file_lock->fl_type == F_UNLCK))
3014 rc2 = flock_lock_file_wait(file, file_lock);
3015 if ((file_lock->fl_flags & FL_POSIX) &&
3016 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
3017 !(flags & LDLM_FL_TEST_LOCK))
3018 rc2 = posix_lock_file_wait(file, file_lock);
3020 if (rc2 && file_lock->fl_type != F_UNLCK) {
3021 einfo.ei_mode = LCK_NL;
3022 md_enqueue(sbi->ll_md_exp, &einfo, &flock, NULL, op_data,
3027 ll_finish_md_op_data(op_data);
3032 int ll_get_fid_by_name(struct inode *parent, const char *name,
3033 int namelen, struct lu_fid *fid)
3035 struct md_op_data *op_data = NULL;
3036 struct mdt_body *body;
3037 struct ptlrpc_request *req;
3041 op_data = ll_prep_md_op_data(NULL, parent, NULL, name, namelen, 0,
3042 LUSTRE_OPC_ANY, NULL);
3043 if (IS_ERR(op_data))
3044 RETURN(PTR_ERR(op_data));
3046 op_data->op_valid = OBD_MD_FLID;
3047 rc = md_getattr_name(ll_i2sbi(parent)->ll_md_exp, op_data, &req);
3048 ll_finish_md_op_data(op_data);
3052 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3054 GOTO(out_req, rc = -EFAULT);
3056 *fid = body->mbo_fid1;
3058 ptlrpc_req_finished(req);
3062 int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
3063 const char *name, int namelen)
3065 struct dentry *dchild = NULL;
3066 struct inode *child_inode = NULL;
3067 struct md_op_data *op_data;
3068 struct ptlrpc_request *request = NULL;
3073 CDEBUG(D_VFSTRACE, "migrate %s under "DFID" to MDT%04x\n",
3074 name, PFID(ll_inode2fid(parent)), mdtidx);
3076 op_data = ll_prep_md_op_data(NULL, parent, NULL, name, namelen,
3077 0, LUSTRE_OPC_ANY, NULL);
3078 if (IS_ERR(op_data))
3079 RETURN(PTR_ERR(op_data));
3081 /* Get child FID first */
3082 qstr.hash = full_name_hash(name, namelen);
3085 dchild = d_lookup(file->f_dentry, &qstr);
3086 if (dchild != NULL && dchild->d_inode != NULL) {
3087 op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
3088 if (dchild->d_inode != NULL) {
3089 child_inode = igrab(dchild->d_inode);
3090 ll_invalidate_aliases(child_inode);
3094 rc = ll_get_fid_by_name(parent, name, namelen,
3100 if (!fid_is_sane(&op_data->op_fid3)) {
3101 CERROR("%s: migrate %s , but fid "DFID" is insane\n",
3102 ll_get_fsname(parent->i_sb, NULL, 0), name,
3103 PFID(&op_data->op_fid3));
3104 GOTO(out_free, rc = -EINVAL);
3107 rc = ll_get_mdt_idx_by_fid(ll_i2sbi(parent), &op_data->op_fid3);
3112 CDEBUG(D_INFO, "%s:"DFID" is already on MDT%d.\n", name,
3113 PFID(&op_data->op_fid3), mdtidx);
3114 GOTO(out_free, rc = 0);
3117 op_data->op_mds = mdtidx;
3118 op_data->op_cli_flags = CLI_MIGRATE;
3119 rc = md_rename(ll_i2sbi(parent)->ll_md_exp, op_data, name,
3120 namelen, name, namelen, &request);
3122 ll_update_times(request, parent);
3124 ptlrpc_req_finished(request);
3129 if (child_inode != NULL) {
3130 clear_nlink(child_inode);
3134 ll_finish_md_op_data(op_data);
3139 ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
3147 * test if some locks matching bits and l_req_mode are acquired
3148 * - bits can be in different locks
3149 * - if found clear the common lock bits in *bits
3150 * - the bits not found, are kept in *bits
3152 * \param bits [IN] searched lock bits [IN]
3153 * \param l_req_mode [IN] searched lock mode
3154 * \retval boolean, true iff all bits are found
3156 int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode)
3158 struct lustre_handle lockh;
3159 ldlm_policy_data_t policy;
3160 ldlm_mode_t mode = (l_req_mode == LCK_MINMODE) ?
3161 (LCK_CR|LCK_CW|LCK_PR|LCK_PW) : l_req_mode;
3170 fid = &ll_i2info(inode)->lli_fid;
3171 CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
3172 ldlm_lockname[mode]);
3174 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
3175 for (i = 0; i <= MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
3176 policy.l_inodebits.bits = *bits & (1 << i);
3177 if (policy.l_inodebits.bits == 0)
3180 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
3181 &policy, mode, &lockh)) {
3182 struct ldlm_lock *lock;
3184 lock = ldlm_handle2lock(&lockh);
3187 ~(lock->l_policy_data.l_inodebits.bits);
3188 LDLM_LOCK_PUT(lock);
3190 *bits &= ~policy.l_inodebits.bits;
3197 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
3198 struct lustre_handle *lockh, __u64 flags,
3201 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
3206 fid = &ll_i2info(inode)->lli_fid;
3207 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
3209 rc = md_lock_match(ll_i2mdexp(inode), LDLM_FL_BLOCK_GRANTED|flags,
3210 fid, LDLM_IBITS, &policy, mode, lockh);
3215 static int ll_inode_revalidate_fini(struct inode *inode, int rc)
3217 /* Already unlinked. Just update nlink and return success */
3218 if (rc == -ENOENT) {
3220 /* This path cannot be hit for regular files unless in
3221 * case of obscure races, so no need to to validate
3223 if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
3225 } else if (rc != 0) {
3226 CDEBUG_LIMIT((rc == -EACCES || rc == -EIDRM) ? D_INFO : D_ERROR,
3227 "%s: revalidate FID "DFID" error: rc = %d\n",
3228 ll_get_fsname(inode->i_sb, NULL, 0),
3229 PFID(ll_inode2fid(inode)), rc);
3235 static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
3237 struct inode *inode = dentry->d_inode;
3238 struct ptlrpc_request *req = NULL;
3239 struct obd_export *exp;
3243 LASSERT(inode != NULL);
3245 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p),name=%s\n",
3246 PFID(ll_inode2fid(inode)), inode, dentry->d_name.name);
3248 exp = ll_i2mdexp(inode);
3250 /* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC.
3251 * But under CMD case, it caused some lock issues, should be fixed
3252 * with new CMD ibits lock. See bug 12718 */
3253 if (exp_connect_flags(exp) & OBD_CONNECT_ATTRFID) {
3254 struct lookup_intent oit = { .it_op = IT_GETATTR };
3255 struct md_op_data *op_data;
3257 if (ibits == MDS_INODELOCK_LOOKUP)
3258 oit.it_op = IT_LOOKUP;
3260 /* Call getattr by fid, so do not provide name at all. */
3261 op_data = ll_prep_md_op_data(NULL, dentry->d_inode,
3262 dentry->d_inode, NULL, 0, 0,
3263 LUSTRE_OPC_ANY, NULL);
3264 if (IS_ERR(op_data))
3265 RETURN(PTR_ERR(op_data));
3267 rc = md_intent_lock(exp, op_data, &oit, &req,
3268 &ll_md_blocking_ast, 0);
3269 ll_finish_md_op_data(op_data);
3271 rc = ll_inode_revalidate_fini(inode, rc);
3275 rc = ll_revalidate_it_finish(req, &oit, dentry);
3277 ll_intent_release(&oit);
3281 /* Unlinked? Unhash dentry, so it is not picked up later by
3282 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
3283 here to preserve get_cwd functionality on 2.6.
3285 if (!dentry->d_inode->i_nlink)
3286 d_lustre_invalidate(dentry, 0);
3288 ll_lookup_finish_locks(&oit, dentry);
3289 } else if (!ll_have_md_lock(dentry->d_inode, &ibits, LCK_MINMODE)) {
3290 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
3291 obd_valid valid = OBD_MD_FLGETATTR;
3292 struct md_op_data *op_data;
3295 if (S_ISREG(inode->i_mode)) {
3296 rc = ll_get_default_mdsize(sbi, &ealen);
3299 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
3302 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
3303 0, ealen, LUSTRE_OPC_ANY,
3305 if (IS_ERR(op_data))
3306 RETURN(PTR_ERR(op_data));
3308 op_data->op_valid = valid;
3309 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
3310 * capa for this inode. Because we only keep capas of dirs
3312 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
3313 ll_finish_md_op_data(op_data);
3315 rc = ll_inode_revalidate_fini(inode, rc);
3319 rc = ll_prep_inode(&inode, req, NULL, NULL);
3322 ptlrpc_req_finished(req);
3326 static int ll_merge_md_attr(struct inode *inode)
3328 struct cl_attr attr = { 0 };
3331 LASSERT(ll_i2info(inode)->lli_lsm_md != NULL);
3332 rc = md_merge_attr(ll_i2mdexp(inode), ll_i2info(inode)->lli_lsm_md,
3337 ll_i2info(inode)->lli_stripe_dir_size = attr.cat_size;
3338 ll_i2info(inode)->lli_stripe_dir_nlink = attr.cat_nlink;
3340 ll_i2info(inode)->lli_lvb.lvb_atime = attr.cat_atime;
3341 ll_i2info(inode)->lli_lvb.lvb_mtime = attr.cat_mtime;
3342 ll_i2info(inode)->lli_lvb.lvb_ctime = attr.cat_ctime;
3348 ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
3350 struct inode *inode = dentry->d_inode;
3354 rc = __ll_inode_revalidate(dentry, ibits);
3358 /* if object isn't regular file, don't validate size */
3359 if (!S_ISREG(inode->i_mode)) {
3360 if (S_ISDIR(inode->i_mode) &&
3361 ll_i2info(inode)->lli_lsm_md != NULL) {
3362 rc = ll_merge_md_attr(inode);
3367 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
3368 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
3369 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
3371 /* In case of restore, the MDT has the right size and has
3372 * already send it back without granting the layout lock,
3373 * inode is up-to-date so glimpse is useless.
3374 * Also to glimpse we need the layout, in case of a running
3375 * restore the MDT holds the layout lock so the glimpse will
3376 * block up to the end of restore (getattr will block)
3378 if (!(ll_i2info(inode)->lli_flags & LLIF_FILE_RESTORING))
3379 rc = ll_glimpse_size(inode);
3384 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
3386 struct inode *inode = de->d_inode;
3387 struct ll_sb_info *sbi = ll_i2sbi(inode);
3388 struct ll_inode_info *lli = ll_i2info(inode);
3391 res = ll_inode_revalidate(de, MDS_INODELOCK_UPDATE |
3392 MDS_INODELOCK_LOOKUP);
3393 ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
3398 stat->dev = inode->i_sb->s_dev;
3399 if (ll_need_32bit_api(sbi))
3400 stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
3402 stat->ino = inode->i_ino;
3403 stat->mode = inode->i_mode;
3404 stat->uid = inode->i_uid;
3405 stat->gid = inode->i_gid;
3406 stat->rdev = inode->i_rdev;
3407 stat->atime = inode->i_atime;
3408 stat->mtime = inode->i_mtime;
3409 stat->ctime = inode->i_ctime;
3410 stat->blksize = 1 << inode->i_blkbits;
3411 stat->blocks = inode->i_blocks;
3413 if (S_ISDIR(inode->i_mode) &&
3414 ll_i2info(inode)->lli_lsm_md != NULL) {
3415 stat->nlink = lli->lli_stripe_dir_nlink;
3416 stat->size = lli->lli_stripe_dir_size;
3418 stat->nlink = inode->i_nlink;
3419 stat->size = i_size_read(inode);
3425 static int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3426 __u64 start, __u64 len)
3430 struct ll_user_fiemap *fiemap;
3431 unsigned int extent_count = fieinfo->fi_extents_max;
3433 num_bytes = sizeof(*fiemap) + (extent_count *
3434 sizeof(struct ll_fiemap_extent));
3435 OBD_ALLOC_LARGE(fiemap, num_bytes);
3440 fiemap->fm_flags = fieinfo->fi_flags;
3441 fiemap->fm_extent_count = fieinfo->fi_extents_max;
3442 fiemap->fm_start = start;
3443 fiemap->fm_length = len;
3444 if (extent_count > 0)
3445 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
3446 sizeof(struct ll_fiemap_extent));
3448 rc = ll_do_fiemap(inode, fiemap, num_bytes);
3450 fieinfo->fi_flags = fiemap->fm_flags;
3451 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
3452 if (extent_count > 0)
3453 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
3454 fiemap->fm_mapped_extents *
3455 sizeof(struct ll_fiemap_extent));
3457 OBD_FREE_LARGE(fiemap, num_bytes);
3461 struct posix_acl *ll_get_acl(struct inode *inode, int type)
3463 struct ll_inode_info *lli = ll_i2info(inode);
3464 struct posix_acl *acl = NULL;
3467 spin_lock(&lli->lli_lock);
3468 /* VFS' acl_permission_check->check_acl will release the refcount */
3469 acl = posix_acl_dup(lli->lli_posix_acl);
3470 spin_unlock(&lli->lli_lock);
3475 #ifndef HAVE_GENERIC_PERMISSION_2ARGS
3477 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
3478 ll_check_acl(struct inode *inode, int mask, unsigned int flags)
3480 ll_check_acl(struct inode *inode, int mask)
3483 # ifdef CONFIG_FS_POSIX_ACL
3484 struct posix_acl *acl;
3488 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
3489 if (flags & IPERM_FLAG_RCU)
3492 acl = ll_get_acl(inode, ACL_TYPE_ACCESS);
3497 rc = posix_acl_permission(inode, acl, mask);
3498 posix_acl_release(acl);
3501 # else /* !CONFIG_FS_POSIX_ACL */
3503 # endif /* CONFIG_FS_POSIX_ACL */
3505 #endif /* HAVE_GENERIC_PERMISSION_2ARGS */
3507 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
3508 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags)
3510 # ifdef HAVE_INODE_PERMISION_2ARGS
3511 int ll_inode_permission(struct inode *inode, int mask)
3513 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
3518 struct ll_sb_info *sbi;
3519 struct root_squash_info *squash;
3520 struct cred *cred = NULL;
3521 const struct cred *old_cred = NULL;
3523 bool squash_id = false;
3526 #ifdef MAY_NOT_BLOCK
3527 if (mask & MAY_NOT_BLOCK)
3529 #elif defined(HAVE_GENERIC_PERMISSION_4ARGS)
3530 if (flags & IPERM_FLAG_RCU)
3534 /* as root inode are NOT getting validated in lookup operation,
3535 * need to do it before permission check. */
3537 if (inode == inode->i_sb->s_root->d_inode) {
3538 rc = __ll_inode_revalidate(inode->i_sb->s_root,
3539 MDS_INODELOCK_LOOKUP);
3544 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), inode mode %x mask %o\n",
3545 PFID(ll_inode2fid(inode)), inode, inode->i_mode, mask);
3547 /* squash fsuid/fsgid if needed */
3548 sbi = ll_i2sbi(inode);
3549 squash = &sbi->ll_squash;
3550 if (unlikely(squash->rsi_uid != 0 &&
3551 uid_eq(current_fsuid(), GLOBAL_ROOT_UID) &&
3552 !(sbi->ll_flags & LL_SBI_NOROOTSQUASH))) {
3556 CDEBUG(D_OTHER, "squash creds (%d:%d)=>(%d:%d)\n",
3557 __kuid_val(current_fsuid()), __kgid_val(current_fsgid()),
3558 squash->rsi_uid, squash->rsi_gid);
3560 /* update current process's credentials
3561 * and FS capability */
3562 cred = prepare_creds();
3566 cred->fsuid = make_kuid(&init_user_ns, squash->rsi_uid);
3567 cred->fsgid = make_kgid(&init_user_ns, squash->rsi_gid);
3568 for (cap = 0; cap < sizeof(cfs_cap_t) * 8; cap++) {
3569 if ((1 << cap) & CFS_CAP_FS_MASK)
3570 cap_lower(cred->cap_effective, cap);
3572 old_cred = override_creds(cred);
3575 ll_stats_ops_tally(sbi, LPROC_LL_INODE_PERM, 1);
3577 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
3578 rc = lustre_check_remote_perm(inode, mask);
3580 rc = ll_generic_permission(inode, mask, flags, ll_check_acl);
3582 /* restore current process's credentials and FS capability */
3584 revert_creds(old_cred);
3591 /* -o localflock - only provides locally consistent flock locks */
3592 struct file_operations ll_file_operations = {
3593 .read = ll_file_read,
3594 .aio_read = ll_file_aio_read,
3595 .write = ll_file_write,
3596 .aio_write = ll_file_aio_write,
3597 .unlocked_ioctl = ll_file_ioctl,
3598 .open = ll_file_open,
3599 .release = ll_file_release,
3600 .mmap = ll_file_mmap,
3601 .llseek = ll_file_seek,
3602 .splice_read = ll_file_splice_read,
3607 struct file_operations ll_file_operations_flock = {
3608 .read = ll_file_read,
3609 .aio_read = ll_file_aio_read,
3610 .write = ll_file_write,
3611 .aio_write = ll_file_aio_write,
3612 .unlocked_ioctl = ll_file_ioctl,
3613 .open = ll_file_open,
3614 .release = ll_file_release,
3615 .mmap = ll_file_mmap,
3616 .llseek = ll_file_seek,
3617 .splice_read = ll_file_splice_read,
3620 .flock = ll_file_flock,
3621 .lock = ll_file_flock
3624 /* These are for -o noflock - to return ENOSYS on flock calls */
3625 struct file_operations ll_file_operations_noflock = {
3626 .read = ll_file_read,
3627 .aio_read = ll_file_aio_read,
3628 .write = ll_file_write,
3629 .aio_write = ll_file_aio_write,
3630 .unlocked_ioctl = ll_file_ioctl,
3631 .open = ll_file_open,
3632 .release = ll_file_release,
3633 .mmap = ll_file_mmap,
3634 .llseek = ll_file_seek,
3635 .splice_read = ll_file_splice_read,
3638 .flock = ll_file_noflock,
3639 .lock = ll_file_noflock
3642 struct inode_operations ll_file_inode_operations = {
3643 .setattr = ll_setattr,
3644 .getattr = ll_getattr,
3645 .permission = ll_inode_permission,
3646 .setxattr = ll_setxattr,
3647 .getxattr = ll_getxattr,
3648 .listxattr = ll_listxattr,
3649 .removexattr = ll_removexattr,
3650 .fiemap = ll_fiemap,
3651 #ifdef HAVE_IOP_GET_ACL
3652 .get_acl = ll_get_acl,
3656 /* dynamic ioctl number support routins */
3657 static struct llioc_ctl_data {
3658 struct rw_semaphore ioc_sem;
3659 struct list_head ioc_head;
3661 __RWSEM_INITIALIZER(llioc.ioc_sem),
3662 LIST_HEAD_INIT(llioc.ioc_head)
3667 struct list_head iocd_list;
3668 unsigned int iocd_size;
3669 llioc_callback_t iocd_cb;
3670 unsigned int iocd_count;
3671 unsigned int iocd_cmd[0];
3674 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
3677 struct llioc_data *in_data = NULL;
3680 if (cb == NULL || cmd == NULL ||
3681 count > LLIOC_MAX_CMD || count < 0)
3684 size = sizeof(*in_data) + count * sizeof(unsigned int);
3685 OBD_ALLOC(in_data, size);
3686 if (in_data == NULL)
3689 memset(in_data, 0, sizeof(*in_data));
3690 in_data->iocd_size = size;
3691 in_data->iocd_cb = cb;
3692 in_data->iocd_count = count;
3693 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
3695 down_write(&llioc.ioc_sem);
3696 list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
3697 up_write(&llioc.ioc_sem);
3702 void ll_iocontrol_unregister(void *magic)
3704 struct llioc_data *tmp;
3709 down_write(&llioc.ioc_sem);
3710 list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
3712 unsigned int size = tmp->iocd_size;
3714 list_del(&tmp->iocd_list);
3715 up_write(&llioc.ioc_sem);
3717 OBD_FREE(tmp, size);
3721 up_write(&llioc.ioc_sem);
3723 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
3726 EXPORT_SYMBOL(ll_iocontrol_register);
3727 EXPORT_SYMBOL(ll_iocontrol_unregister);
3729 static enum llioc_iter
3730 ll_iocontrol_call(struct inode *inode, struct file *file,
3731 unsigned int cmd, unsigned long arg, int *rcp)
3733 enum llioc_iter ret = LLIOC_CONT;
3734 struct llioc_data *data;
3735 int rc = -EINVAL, i;
3737 down_read(&llioc.ioc_sem);
3738 list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
3739 for (i = 0; i < data->iocd_count; i++) {
3740 if (cmd != data->iocd_cmd[i])
3743 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
3747 if (ret == LLIOC_STOP)
3750 up_read(&llioc.ioc_sem);
3757 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
3759 struct ll_inode_info *lli = ll_i2info(inode);
3760 struct cl_env_nest nest;
3765 if (lli->lli_clob == NULL)
3768 env = cl_env_nested_get(&nest);
3770 RETURN(PTR_ERR(env));
3772 result = cl_conf_set(env, lli->lli_clob, conf);
3773 cl_env_nested_put(&nest, env);
3775 if (conf->coc_opc == OBJECT_CONF_SET) {
3776 struct ldlm_lock *lock = conf->coc_lock;
3778 LASSERT(lock != NULL);
3779 LASSERT(ldlm_has_layout(lock));
3781 struct lustre_md *md = conf->u.coc_md;
3782 __u32 gen = LL_LAYOUT_GEN_EMPTY;
3784 /* it can only be allowed to match after layout is
3785 * applied to inode otherwise false layout would be
3786 * seen. Applying layout shoud happen before dropping
3787 * the intent lock. */
3788 ldlm_lock_allow_match(lock);
3790 lli->lli_has_smd = lsm_has_objects(md->lsm);
3791 if (md->lsm != NULL)
3792 gen = md->lsm->lsm_layout_gen;
3795 DFID ": layout version change: %u -> %u\n",
3796 PFID(&lli->lli_fid), ll_layout_version_get(lli),
3798 ll_layout_version_set(lli, gen);
3804 /* Fetch layout from MDT with getxattr request, if it's not ready yet */
3805 static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
3808 struct ll_sb_info *sbi = ll_i2sbi(inode);
3809 struct obd_capa *oc;
3810 struct ptlrpc_request *req;
3811 struct mdt_body *body;
3818 CDEBUG(D_INODE, DFID" LVB_READY=%d l_lvb_data=%p l_lvb_len=%d\n",
3819 PFID(ll_inode2fid(inode)), ldlm_is_lvb_ready(lock),
3820 lock->l_lvb_data, lock->l_lvb_len);
3822 if ((lock->l_lvb_data != NULL) && ldlm_is_lvb_ready(lock))
3825 /* if layout lock was granted right away, the layout is returned
3826 * within DLM_LVB of dlm reply; otherwise if the lock was ever
3827 * blocked and then granted via completion ast, we have to fetch
3828 * layout here. Please note that we can't use the LVB buffer in
3829 * completion AST because it doesn't have a large enough buffer */
3830 oc = ll_mdscapa_get(inode);
3831 rc = ll_get_default_mdsize(sbi, &lmmsize);
3833 rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
3834 OBD_MD_FLXATTR, XATTR_NAME_LOV, NULL, 0,
3840 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3842 GOTO(out, rc = -EPROTO);
3844 lmmsize = body->mbo_eadatasize;
3845 if (lmmsize == 0) /* empty layout */
3848 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, lmmsize);
3850 GOTO(out, rc = -EFAULT);
3852 OBD_ALLOC_LARGE(lvbdata, lmmsize);
3853 if (lvbdata == NULL)
3854 GOTO(out, rc = -ENOMEM);
3856 memcpy(lvbdata, lmm, lmmsize);
3857 lock_res_and_lock(lock);
3858 if (lock->l_lvb_data != NULL)
3859 OBD_FREE_LARGE(lock->l_lvb_data, lock->l_lvb_len);
3861 lock->l_lvb_data = lvbdata;
3862 lock->l_lvb_len = lmmsize;
3863 unlock_res_and_lock(lock);
3868 ptlrpc_req_finished(req);
3873 * Apply the layout to the inode. Layout lock is held and will be released
3876 static int ll_layout_lock_set(struct lustre_handle *lockh, ldlm_mode_t mode,
3877 struct inode *inode, __u32 *gen, bool reconf)
3879 struct ll_inode_info *lli = ll_i2info(inode);
3880 struct ll_sb_info *sbi = ll_i2sbi(inode);
3881 struct ldlm_lock *lock;
3882 struct lustre_md md = { NULL };
3883 struct cl_object_conf conf;
3886 bool wait_layout = false;
3889 LASSERT(lustre_handle_is_used(lockh));
3891 lock = ldlm_handle2lock(lockh);
3892 LASSERT(lock != NULL);
3893 LASSERT(ldlm_has_layout(lock));
3895 LDLM_DEBUG(lock, "file "DFID"(%p) being reconfigured: %d",
3896 PFID(&lli->lli_fid), inode, reconf);
3898 /* in case this is a caching lock and reinstate with new inode */
3899 md_set_lock_data(sbi->ll_md_exp, &lockh->cookie, inode, NULL);
3901 lock_res_and_lock(lock);
3902 lvb_ready = ldlm_is_lvb_ready(lock);
3903 unlock_res_and_lock(lock);
3904 /* checking lvb_ready is racy but this is okay. The worst case is
3905 * that multi processes may configure the file on the same time. */
3907 if (lvb_ready || !reconf) {
3910 /* layout_gen must be valid if layout lock is not
3911 * cancelled and stripe has already set */
3912 *gen = ll_layout_version_get(lli);
3918 rc = ll_layout_fetch(inode, lock);
3922 /* for layout lock, lmm is returned in lock's lvb.
3923 * lvb_data is immutable if the lock is held so it's safe to access it
3924 * without res lock. See the description in ldlm_lock_decref_internal()
3925 * for the condition to free lvb_data of layout lock */
3926 if (lock->l_lvb_data != NULL) {
3927 rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm,
3928 lock->l_lvb_data, lock->l_lvb_len);
3930 *gen = LL_LAYOUT_GEN_EMPTY;
3932 *gen = md.lsm->lsm_layout_gen;
3935 CERROR("%s: file "DFID" unpackmd error: %d\n",
3936 ll_get_fsname(inode->i_sb, NULL, 0),
3937 PFID(&lli->lli_fid), rc);
3943 /* set layout to file. Unlikely this will fail as old layout was
3944 * surely eliminated */
3945 memset(&conf, 0, sizeof conf);
3946 conf.coc_opc = OBJECT_CONF_SET;
3947 conf.coc_inode = inode;
3948 conf.coc_lock = lock;
3949 conf.u.coc_md = &md;
3950 rc = ll_layout_conf(inode, &conf);
3953 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
3955 /* refresh layout failed, need to wait */
3956 wait_layout = rc == -EBUSY;
3960 LDLM_LOCK_PUT(lock);
3961 ldlm_lock_decref(lockh, mode);
3963 /* wait for IO to complete if it's still being used. */
3965 CDEBUG(D_INODE, "%s: "DFID"(%p) wait for layout reconf\n",
3966 ll_get_fsname(inode->i_sb, NULL, 0),
3967 PFID(&lli->lli_fid), inode);
3969 memset(&conf, 0, sizeof conf);
3970 conf.coc_opc = OBJECT_CONF_WAIT;
3971 conf.coc_inode = inode;
3972 rc = ll_layout_conf(inode, &conf);
3976 CDEBUG(D_INODE, "%s file="DFID" waiting layout return: %d\n",
3977 ll_get_fsname(inode->i_sb, NULL, 0),
3978 PFID(&lli->lli_fid), rc);
3984 * This function checks if there exists a LAYOUT lock on the client side,
3985 * or enqueues it if it doesn't have one in cache.
3987 * This function will not hold layout lock so it may be revoked any time after
3988 * this function returns. Any operations depend on layout should be redone
3991 * This function should be called before lov_io_init() to get an uptodate
3992 * layout version, the caller should save the version number and after IO
3993 * is finished, this function should be called again to verify that layout
3994 * is not changed during IO time.
3996 int ll_layout_refresh(struct inode *inode, __u32 *gen)
3998 struct ll_inode_info *lli = ll_i2info(inode);
3999 struct ll_sb_info *sbi = ll_i2sbi(inode);
4000 struct md_op_data *op_data;
4001 struct lookup_intent it;
4002 struct lustre_handle lockh;
4004 struct ldlm_enqueue_info einfo = {
4005 .ei_type = LDLM_IBITS,
4007 .ei_cb_bl = &ll_md_blocking_ast,
4008 .ei_cb_cp = &ldlm_completion_ast,
4013 *gen = ll_layout_version_get(lli);
4014 if (!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK) || *gen != LL_LAYOUT_GEN_NONE)
4018 LASSERT(fid_is_sane(ll_inode2fid(inode)));
4019 LASSERT(S_ISREG(inode->i_mode));
4021 /* take layout lock mutex to enqueue layout lock exclusively. */
4022 mutex_lock(&lli->lli_layout_mutex);
4025 /* mostly layout lock is caching on the local side, so try to match
4026 * it before grabbing layout lock mutex. */
4027 mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0,
4028 LCK_CR | LCK_CW | LCK_PR | LCK_PW);
4029 if (mode != 0) { /* hit cached lock */
4030 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
4034 mutex_unlock(&lli->lli_layout_mutex);
4038 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
4039 0, 0, LUSTRE_OPC_ANY, NULL);
4040 if (IS_ERR(op_data)) {
4041 mutex_unlock(&lli->lli_layout_mutex);
4042 RETURN(PTR_ERR(op_data));
4045 /* have to enqueue one */
4046 memset(&it, 0, sizeof(it));
4047 it.it_op = IT_LAYOUT;
4048 lockh.cookie = 0ULL;
4050 LDLM_DEBUG_NOLOCK("%s: requeue layout lock for file "DFID"(%p)",
4051 ll_get_fsname(inode->i_sb, NULL, 0),
4052 PFID(&lli->lli_fid), inode);
4054 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL, &it, op_data, &lockh, 0);
4055 if (it.d.lustre.it_data != NULL)
4056 ptlrpc_req_finished(it.d.lustre.it_data);
4057 it.d.lustre.it_data = NULL;
4059 ll_finish_md_op_data(op_data);
4061 mode = it.d.lustre.it_lock_mode;
4062 it.d.lustre.it_lock_mode = 0;
4063 ll_intent_drop_lock(&it);
4066 /* set lock data in case this is a new lock */
4067 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
4068 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
4072 mutex_unlock(&lli->lli_layout_mutex);
4078 * This function send a restore request to the MDT
4080 int ll_layout_restore(struct inode *inode, loff_t offset, __u64 length)
4082 struct hsm_user_request *hur;
4086 len = sizeof(struct hsm_user_request) +
4087 sizeof(struct hsm_user_item);
4088 OBD_ALLOC(hur, len);
4092 hur->hur_request.hr_action = HUA_RESTORE;
4093 hur->hur_request.hr_archive_id = 0;
4094 hur->hur_request.hr_flags = 0;
4095 memcpy(&hur->hur_user_item[0].hui_fid, &ll_i2info(inode)->lli_fid,
4096 sizeof(hur->hur_user_item[0].hui_fid));
4097 hur->hur_user_item[0].hui_extent.offset = offset;
4098 hur->hur_user_item[0].hui_extent.length = length;
4099 hur->hur_request.hr_itemcount = 1;
4100 rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp,