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, 2012, 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 "../include/lustre_dlm.h"
45 #include "../include/lustre_lite.h"
46 #include <linux/pagemap.h>
47 #include <linux/file.h>
48 #include "llite_internal.h"
49 #include "../include/lustre/ll_fiemap.h"
51 #include "../include/cl_object.h"
54 ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
56 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
59 static enum llioc_iter
60 ll_iocontrol_call(struct inode *inode, struct file *file,
61 unsigned int cmd, unsigned long arg, int *rcp);
63 static struct ll_file_data *ll_file_data_get(void)
65 struct ll_file_data *fd;
67 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, GFP_NOFS);
70 fd->fd_write_failed = false;
74 static void ll_file_data_put(struct ll_file_data *fd)
77 OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
80 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
81 struct lustre_handle *fh)
83 op_data->op_fid1 = ll_i2info(inode)->lli_fid;
84 op_data->op_attr.ia_mode = inode->i_mode;
85 op_data->op_attr.ia_atime = inode->i_atime;
86 op_data->op_attr.ia_mtime = inode->i_mtime;
87 op_data->op_attr.ia_ctime = inode->i_ctime;
88 op_data->op_attr.ia_size = i_size_read(inode);
89 op_data->op_attr_blocks = inode->i_blocks;
90 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
91 ll_inode_to_ext_flags(inode->i_flags);
92 op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
94 op_data->op_handle = *fh;
95 op_data->op_capa1 = ll_mdscapa_get(inode);
97 if (LLIF_DATA_MODIFIED & ll_i2info(inode)->lli_flags)
98 op_data->op_bias |= MDS_DATA_MODIFIED;
102 * Closes the IO epoch and packs all the attributes into @op_data for
105 static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
106 struct obd_client_handle *och)
108 op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME | ATTR_ATIME_SET |
109 ATTR_MTIME | ATTR_MTIME_SET |
110 ATTR_CTIME | ATTR_CTIME_SET;
112 if (!(och->och_flags & FMODE_WRITE))
115 if (!exp_connect_som(ll_i2mdexp(inode)) || !S_ISREG(inode->i_mode))
116 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
118 ll_ioepoch_close(inode, op_data, &och, 0);
121 ll_pack_inode2opdata(inode, op_data, &och->och_fh);
122 ll_prep_md_op_data(op_data, inode, NULL, NULL,
123 0, 0, LUSTRE_OPC_ANY, NULL);
126 static int ll_close_inode_openhandle(struct obd_export *md_exp,
128 struct obd_client_handle *och,
129 const __u64 *data_version)
131 struct obd_export *exp = ll_i2mdexp(inode);
132 struct md_op_data *op_data;
133 struct ptlrpc_request *req = NULL;
134 struct obd_device *obd = class_exp2obd(exp);
140 * XXX: in case of LMV, is this correct to access
143 CERROR("Invalid MDC connection handle %#llx\n",
144 ll_i2mdexp(inode)->exp_handle.h_cookie);
149 op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
151 /* XXX We leak openhandle and request here. */
156 ll_prepare_close(inode, op_data, och);
157 if (data_version != NULL) {
158 /* Pass in data_version implies release. */
159 op_data->op_bias |= MDS_HSM_RELEASE;
160 op_data->op_data_version = *data_version;
161 op_data->op_lease_handle = och->och_lease_handle;
162 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
164 epoch_close = op_data->op_flags & MF_EPOCH_CLOSE;
165 rc = md_close(md_exp, op_data, och->och_mod, &req);
167 /* This close must have the epoch closed. */
168 LASSERT(epoch_close);
169 /* MDS has instructed us to obtain Size-on-MDS attribute from
170 * OSTs and send setattr to back to MDS. */
171 rc = ll_som_update(inode, op_data);
173 CERROR("inode %lu mdc Size-on-MDS update failed: rc = %d\n",
178 CERROR("inode %lu mdc close failed: rc = %d\n",
182 /* DATA_MODIFIED flag was successfully sent on close, cancel data
183 * modification flag. */
184 if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
185 struct ll_inode_info *lli = ll_i2info(inode);
187 spin_lock(&lli->lli_lock);
188 lli->lli_flags &= ~LLIF_DATA_MODIFIED;
189 spin_unlock(&lli->lli_lock);
193 rc = ll_objects_destroy(req, inode);
195 CERROR("inode %lu ll_objects destroy: rc = %d\n",
198 if (rc == 0 && op_data->op_bias & MDS_HSM_RELEASE) {
199 struct mdt_body *body;
201 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
202 if (!(body->valid & OBD_MD_FLRELEASED))
206 ll_finish_md_op_data(op_data);
209 if (exp_connect_som(exp) && !epoch_close &&
210 S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
211 ll_queue_done_writing(inode, LLIF_DONE_WRITING);
213 md_clear_open_replay_data(md_exp, och);
214 /* Free @och if it is not waiting for DONE_WRITING. */
215 och->och_fh.cookie = DEAD_HANDLE_MAGIC;
218 if (req) /* This is close request */
219 ptlrpc_req_finished(req);
223 int ll_md_real_close(struct inode *inode, fmode_t fmode)
225 struct ll_inode_info *lli = ll_i2info(inode);
226 struct obd_client_handle **och_p;
227 struct obd_client_handle *och;
231 if (fmode & FMODE_WRITE) {
232 och_p = &lli->lli_mds_write_och;
233 och_usecount = &lli->lli_open_fd_write_count;
234 } else if (fmode & FMODE_EXEC) {
235 och_p = &lli->lli_mds_exec_och;
236 och_usecount = &lli->lli_open_fd_exec_count;
238 LASSERT(fmode & FMODE_READ);
239 och_p = &lli->lli_mds_read_och;
240 och_usecount = &lli->lli_open_fd_read_count;
243 mutex_lock(&lli->lli_och_mutex);
244 if (*och_usecount > 0) {
245 /* There are still users of this handle, so skip
247 mutex_unlock(&lli->lli_och_mutex);
253 mutex_unlock(&lli->lli_och_mutex);
256 /* There might be a race and this handle may already
258 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
265 static int ll_md_close(struct obd_export *md_exp, struct inode *inode,
268 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
269 struct ll_inode_info *lli = ll_i2info(inode);
271 __u64 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
272 struct lustre_handle lockh;
273 ldlm_policy_data_t policy = {.l_inodebits = {MDS_INODELOCK_OPEN}};
276 /* clear group lock, if present */
277 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
278 ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
280 if (fd->fd_lease_och != NULL) {
283 /* Usually the lease is not released when the
284 * application crashed, we need to release here. */
285 rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken);
286 CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n",
287 PFID(&lli->lli_fid), rc, lease_broken);
289 fd->fd_lease_och = NULL;
292 if (fd->fd_och != NULL) {
293 rc = ll_close_inode_openhandle(md_exp, inode, fd->fd_och, NULL);
298 /* Let's see if we have good enough OPEN lock on the file and if
299 we can skip talking to MDS */
301 mutex_lock(&lli->lli_och_mutex);
302 if (fd->fd_omode & FMODE_WRITE) {
304 LASSERT(lli->lli_open_fd_write_count);
305 lli->lli_open_fd_write_count--;
306 } else if (fd->fd_omode & FMODE_EXEC) {
308 LASSERT(lli->lli_open_fd_exec_count);
309 lli->lli_open_fd_exec_count--;
312 LASSERT(lli->lli_open_fd_read_count);
313 lli->lli_open_fd_read_count--;
315 mutex_unlock(&lli->lli_och_mutex);
317 if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
318 LDLM_IBITS, &policy, lockmode, &lockh))
319 rc = ll_md_real_close(inode, fd->fd_omode);
322 LUSTRE_FPRIVATE(file) = NULL;
323 ll_file_data_put(fd);
324 ll_capa_close(inode);
329 /* While this returns an error code, fput() the caller does not, so we need
330 * to make every effort to clean up all of our state here. Also, applications
331 * rarely check close errors and even if an error is returned they will not
332 * re-try the close call.
334 int ll_file_release(struct inode *inode, struct file *file)
336 struct ll_file_data *fd;
337 struct ll_sb_info *sbi = ll_i2sbi(inode);
338 struct ll_inode_info *lli = ll_i2info(inode);
341 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
342 inode->i_generation, inode);
344 #ifdef CONFIG_FS_POSIX_ACL
345 if (sbi->ll_flags & LL_SBI_RMT_CLIENT && is_root_inode(inode)) {
346 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
349 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
350 fd->fd_flags &= ~LL_FILE_RMTACL;
351 rct_del(&sbi->ll_rct, current_pid());
352 et_search_free(&sbi->ll_et, current_pid());
357 if (!is_root_inode(inode))
358 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
359 fd = LUSTRE_FPRIVATE(file);
362 /* The last ref on @file, maybe not the owner pid of statahead.
363 * Different processes can open the same dir, "ll_opendir_key" means:
364 * it is me that should stop the statahead thread. */
365 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
366 lli->lli_opendir_pid != 0)
367 ll_stop_statahead(inode, lli->lli_opendir_key);
369 if (is_root_inode(inode)) {
370 LUSTRE_FPRIVATE(file) = NULL;
371 ll_file_data_put(fd);
375 if (!S_ISDIR(inode->i_mode)) {
376 lov_read_and_clear_async_rc(lli->lli_clob);
377 lli->lli_async_rc = 0;
380 rc = ll_md_close(sbi->ll_md_exp, inode, file);
382 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
383 libcfs_debug_dumplog();
388 static int ll_intent_file_open(struct dentry *dentry, void *lmm,
389 int lmmsize, struct lookup_intent *itp)
391 struct inode *inode = d_inode(dentry);
392 struct ll_sb_info *sbi = ll_i2sbi(inode);
393 struct dentry *parent = dentry->d_parent;
394 const char *name = dentry->d_name.name;
395 const int len = dentry->d_name.len;
396 struct md_op_data *op_data;
397 struct ptlrpc_request *req;
398 __u32 opc = LUSTRE_OPC_ANY;
401 /* Usually we come here only for NFSD, and we want open lock.
402 But we can also get here with pre 2.6.15 patchless kernels, and in
403 that case that lock is also ok */
404 /* We can also get here if there was cached open handle in revalidate_it
405 * but it disappeared while we were getting from there to ll_file_open.
406 * But this means this file was closed and immediately opened which
407 * makes a good candidate for using OPEN lock */
408 /* If lmmsize & lmm are not 0, we are just setting stripe info
409 * parameters. No need for the open lock */
410 if (lmm == NULL && lmmsize == 0) {
411 itp->it_flags |= MDS_OPEN_LOCK;
412 if (itp->it_flags & FMODE_WRITE)
413 opc = LUSTRE_OPC_CREATE;
416 op_data = ll_prep_md_op_data(NULL, d_inode(parent),
420 return PTR_ERR(op_data);
422 itp->it_flags |= MDS_OPEN_BY_FID;
423 rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
424 0 /*unused */, &req, ll_md_blocking_ast, 0);
425 ll_finish_md_op_data(op_data);
427 /* reason for keep own exit path - don`t flood log
428 * with messages with -ESTALE errors.
430 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
431 it_open_error(DISP_OPEN_OPEN, itp))
433 ll_release_openhandle(inode, itp);
437 if (it_disposition(itp, DISP_LOOKUP_NEG)) {
442 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
443 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
444 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
448 rc = ll_prep_inode(&inode, req, NULL, itp);
449 if (!rc && itp->d.lustre.it_lock_mode)
450 ll_set_lock_data(sbi->ll_md_exp, inode, itp, NULL);
453 ptlrpc_req_finished(req);
454 ll_intent_drop_lock(itp);
460 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
461 * not believe attributes if a few ioepoch holders exist. Attributes for
462 * previous ioepoch if new one is opened are also skipped by MDS.
464 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
466 if (ioepoch && lli->lli_ioepoch != ioepoch) {
467 lli->lli_ioepoch = ioepoch;
468 CDEBUG(D_INODE, "Epoch %llu opened on "DFID"\n",
469 ioepoch, PFID(&lli->lli_fid));
473 static int ll_och_fill(struct obd_export *md_exp, struct lookup_intent *it,
474 struct obd_client_handle *och)
476 struct ptlrpc_request *req = it->d.lustre.it_data;
477 struct mdt_body *body;
479 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
480 och->och_fh = body->handle;
481 och->och_fid = body->fid1;
482 och->och_lease_handle.cookie = it->d.lustre.it_lock_handle;
483 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
484 och->och_flags = it->it_flags;
486 return md_set_open_replay_data(md_exp, och, it);
489 static int ll_local_open(struct file *file, struct lookup_intent *it,
490 struct ll_file_data *fd, struct obd_client_handle *och)
492 struct inode *inode = file_inode(file);
493 struct ll_inode_info *lli = ll_i2info(inode);
495 LASSERT(!LUSTRE_FPRIVATE(file));
500 struct ptlrpc_request *req = it->d.lustre.it_data;
501 struct mdt_body *body;
504 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
508 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
509 ll_ioepoch_open(lli, body->ioepoch);
512 LUSTRE_FPRIVATE(file) = fd;
513 ll_readahead_init(inode, &fd->fd_ras);
514 fd->fd_omode = it->it_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
518 /* Open a file, and (for the very first open) create objects on the OSTs at
519 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
520 * creation or open until ll_lov_setstripe() ioctl is called.
522 * If we already have the stripe MD locally then we don't request it in
523 * md_open(), by passing a lmm_size = 0.
525 * It is up to the application to ensure no other processes open this file
526 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
527 * used. We might be able to avoid races of that sort by getting lli_open_sem
528 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
529 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
531 int ll_file_open(struct inode *inode, struct file *file)
533 struct ll_inode_info *lli = ll_i2info(inode);
534 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
535 .it_flags = file->f_flags };
536 struct obd_client_handle **och_p = NULL;
537 __u64 *och_usecount = NULL;
538 struct ll_file_data *fd;
539 int rc = 0, opendir_set = 0;
541 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
542 inode->i_generation, inode, file->f_flags);
544 it = file->private_data; /* XXX: compat macro */
545 file->private_data = NULL; /* prevent ll_local_open assertion */
547 fd = ll_file_data_get();
554 if (S_ISDIR(inode->i_mode)) {
555 spin_lock(&lli->lli_sa_lock);
556 if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
557 lli->lli_opendir_pid == 0) {
558 lli->lli_opendir_key = fd;
559 lli->lli_opendir_pid = current_pid();
562 spin_unlock(&lli->lli_sa_lock);
565 if (is_root_inode(inode)) {
566 LUSTRE_FPRIVATE(file) = fd;
570 if (!it || !it->d.lustre.it_disposition) {
571 /* Convert f_flags into access mode. We cannot use file->f_mode,
572 * because everything but O_ACCMODE mask was stripped from
574 if ((oit.it_flags + 1) & O_ACCMODE)
576 if (file->f_flags & O_TRUNC)
577 oit.it_flags |= FMODE_WRITE;
579 /* kernel only call f_op->open in dentry_open. filp_open calls
580 * dentry_open after call to open_namei that checks permissions.
581 * Only nfsd_open call dentry_open directly without checking
582 * permissions and because of that this code below is safe. */
583 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
584 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
586 /* We do not want O_EXCL here, presumably we opened the file
587 * already? XXX - NFS implications? */
588 oit.it_flags &= ~O_EXCL;
590 /* bug20584, if "it_flags" contains O_CREAT, the file will be
591 * created if necessary, then "IT_CREAT" should be set to keep
592 * consistent with it */
593 if (oit.it_flags & O_CREAT)
594 oit.it_op |= IT_CREAT;
600 /* Let's see if we have file open on MDS already. */
601 if (it->it_flags & FMODE_WRITE) {
602 och_p = &lli->lli_mds_write_och;
603 och_usecount = &lli->lli_open_fd_write_count;
604 } else if (it->it_flags & FMODE_EXEC) {
605 och_p = &lli->lli_mds_exec_och;
606 och_usecount = &lli->lli_open_fd_exec_count;
608 och_p = &lli->lli_mds_read_och;
609 och_usecount = &lli->lli_open_fd_read_count;
612 mutex_lock(&lli->lli_och_mutex);
613 if (*och_p) { /* Open handle is present */
614 if (it_disposition(it, DISP_OPEN_OPEN)) {
615 /* Well, there's extra open request that we do not need,
616 let's close it somehow. This will decref request. */
617 rc = it_open_error(DISP_OPEN_OPEN, it);
619 mutex_unlock(&lli->lli_och_mutex);
623 ll_release_openhandle(inode, it);
627 rc = ll_local_open(file, it, fd, NULL);
630 mutex_unlock(&lli->lli_och_mutex);
634 LASSERT(*och_usecount == 0);
635 if (!it->d.lustre.it_disposition) {
636 /* We cannot just request lock handle now, new ELC code
637 means that one of other OPEN locks for this file
638 could be cancelled, and since blocking ast handler
639 would attempt to grab och_mutex as well, that would
640 result in a deadlock */
641 mutex_unlock(&lli->lli_och_mutex);
642 it->it_create_mode |= M_CHECK_STALE;
643 rc = ll_intent_file_open(file->f_path.dentry, NULL, 0, it);
644 it->it_create_mode &= ~M_CHECK_STALE;
650 *och_p = kzalloc(sizeof(struct obd_client_handle), GFP_NOFS);
658 /* md_intent_lock() didn't get a request ref if there was an
659 * open error, so don't do cleanup on the request here
661 /* XXX (green): Should not we bail out on any error here, not
662 * just open error? */
663 rc = it_open_error(DISP_OPEN_OPEN, it);
667 LASSERT(it_disposition(it, DISP_ENQ_OPEN_REF));
669 rc = ll_local_open(file, it, fd, *och_p);
673 mutex_unlock(&lli->lli_och_mutex);
676 /* Must do this outside lli_och_mutex lock to prevent deadlock where
677 different kind of OPEN lock for this same inode gets cancelled
678 by ldlm_cancel_lru */
679 if (!S_ISREG(inode->i_mode))
684 if (!lli->lli_has_smd &&
685 (cl_is_lov_delay_create(file->f_flags) ||
686 (file->f_mode & FMODE_WRITE) == 0)) {
687 CDEBUG(D_INODE, "object creation was delayed\n");
690 cl_lov_delay_create_clear(&file->f_flags);
695 if (och_p && *och_p) {
697 *och_p = NULL; /* OBD_FREE writes some magic there */
700 mutex_unlock(&lli->lli_och_mutex);
703 if (opendir_set != 0)
704 ll_stop_statahead(inode, lli->lli_opendir_key);
706 ll_file_data_put(fd);
708 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
711 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
712 ptlrpc_req_finished(it->d.lustre.it_data);
713 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
719 static int ll_md_blocking_lease_ast(struct ldlm_lock *lock,
720 struct ldlm_lock_desc *desc, void *data, int flag)
723 struct lustre_handle lockh;
726 case LDLM_CB_BLOCKING:
727 ldlm_lock2handle(lock, &lockh);
728 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
730 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
734 case LDLM_CB_CANCELING:
742 * Acquire a lease and open the file.
744 static struct obd_client_handle *
745 ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode,
748 struct lookup_intent it = { .it_op = IT_OPEN };
749 struct ll_sb_info *sbi = ll_i2sbi(inode);
750 struct md_op_data *op_data;
751 struct ptlrpc_request *req;
752 struct lustre_handle old_handle = { 0 };
753 struct obd_client_handle *och = NULL;
757 if (fmode != FMODE_WRITE && fmode != FMODE_READ)
758 return ERR_PTR(-EINVAL);
761 struct ll_inode_info *lli = ll_i2info(inode);
762 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
763 struct obd_client_handle **och_p;
766 if (!(fmode & file->f_mode) || (file->f_mode & FMODE_EXEC))
767 return ERR_PTR(-EPERM);
769 /* Get the openhandle of the file */
771 mutex_lock(&lli->lli_och_mutex);
772 if (fd->fd_lease_och != NULL) {
773 mutex_unlock(&lli->lli_och_mutex);
777 if (fd->fd_och == NULL) {
778 if (file->f_mode & FMODE_WRITE) {
779 LASSERT(lli->lli_mds_write_och != NULL);
780 och_p = &lli->lli_mds_write_och;
781 och_usecount = &lli->lli_open_fd_write_count;
783 LASSERT(lli->lli_mds_read_och != NULL);
784 och_p = &lli->lli_mds_read_och;
785 och_usecount = &lli->lli_open_fd_read_count;
787 if (*och_usecount == 1) {
794 mutex_unlock(&lli->lli_och_mutex);
795 if (rc < 0) /* more than 1 opener */
798 LASSERT(fd->fd_och != NULL);
799 old_handle = fd->fd_och->och_fh;
802 och = kzalloc(sizeof(*och), GFP_NOFS);
804 return ERR_PTR(-ENOMEM);
806 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
807 LUSTRE_OPC_ANY, NULL);
808 if (IS_ERR(op_data)) {
809 rc = PTR_ERR(op_data);
813 /* To tell the MDT this openhandle is from the same owner */
814 op_data->op_handle = old_handle;
816 it.it_flags = fmode | open_flags;
817 it.it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID | MDS_OPEN_LEASE;
818 rc = md_intent_lock(sbi->ll_md_exp, op_data, NULL, 0, &it, 0, &req,
819 ll_md_blocking_lease_ast,
820 /* LDLM_FL_NO_LRU: To not put the lease lock into LRU list, otherwise
821 * it can be cancelled which may mislead applications that the lease is
823 * LDLM_FL_EXCL: Set this flag so that it won't be matched by normal
824 * open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast
825 * doesn't deal with openhandle, so normal openhandle will be leaked. */
826 LDLM_FL_NO_LRU | LDLM_FL_EXCL);
827 ll_finish_md_op_data(op_data);
828 ptlrpc_req_finished(req);
832 if (it_disposition(&it, DISP_LOOKUP_NEG)) {
837 rc = it_open_error(DISP_OPEN_OPEN, &it);
841 LASSERT(it_disposition(&it, DISP_ENQ_OPEN_REF));
842 ll_och_fill(sbi->ll_md_exp, &it, och);
844 if (!it_disposition(&it, DISP_OPEN_LEASE)) /* old server? */ {
849 /* already get lease, handle lease lock */
850 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
851 if (it.d.lustre.it_lock_mode == 0 ||
852 it.d.lustre.it_lock_bits != MDS_INODELOCK_OPEN) {
853 /* open lock must return for lease */
854 CERROR(DFID "lease granted but no open lock, %d/%llu.\n",
855 PFID(ll_inode2fid(inode)), it.d.lustre.it_lock_mode,
856 it.d.lustre.it_lock_bits);
861 ll_intent_release(&it);
865 rc2 = ll_close_inode_openhandle(sbi->ll_md_exp, inode, och, NULL);
867 CERROR("Close openhandle returned %d\n", rc2);
869 /* cancel open lock */
870 if (it.d.lustre.it_lock_mode != 0) {
871 ldlm_lock_decref_and_cancel(&och->och_lease_handle,
872 it.d.lustre.it_lock_mode);
873 it.d.lustre.it_lock_mode = 0;
876 ll_intent_release(&it);
883 * Release lease and close the file.
884 * It will check if the lease has ever broken.
886 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
889 struct ldlm_lock *lock;
890 bool cancelled = true;
893 lock = ldlm_handle2lock(&och->och_lease_handle);
895 lock_res_and_lock(lock);
896 cancelled = ldlm_is_cancel(lock);
897 unlock_res_and_lock(lock);
901 CDEBUG(D_INODE, "lease for "DFID" broken? %d\n",
902 PFID(&ll_i2info(inode)->lli_fid), cancelled);
905 ldlm_cli_cancel(&och->och_lease_handle, 0);
906 if (lease_broken != NULL)
907 *lease_broken = cancelled;
909 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
914 /* Fills the obdo with the attributes for the lsm */
915 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
916 struct obd_capa *capa, struct obdo *obdo,
917 __u64 ioepoch, int sync)
919 struct ptlrpc_request_set *set;
920 struct obd_info oinfo = { { { 0 } } };
923 LASSERT(lsm != NULL);
927 oinfo.oi_oa->o_oi = lsm->lsm_oi;
928 oinfo.oi_oa->o_mode = S_IFREG;
929 oinfo.oi_oa->o_ioepoch = ioepoch;
930 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
931 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
932 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
933 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
934 OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
935 OBD_MD_FLDATAVERSION;
936 oinfo.oi_capa = capa;
938 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
939 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
942 set = ptlrpc_prep_set();
944 CERROR("can't allocate ptlrpc set\n");
947 rc = obd_getattr_async(exp, &oinfo, set);
949 rc = ptlrpc_set_wait(set);
950 ptlrpc_set_destroy(set);
953 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
954 OBD_MD_FLATIME | OBD_MD_FLMTIME |
955 OBD_MD_FLCTIME | OBD_MD_FLSIZE |
956 OBD_MD_FLDATAVERSION);
961 * Performs the getattr on the inode and updates its fields.
962 * If @sync != 0, perform the getattr under the server-side lock.
964 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
965 __u64 ioepoch, int sync)
967 struct obd_capa *capa = ll_mdscapa_get(inode);
968 struct lov_stripe_md *lsm;
971 lsm = ccc_inode_lsm_get(inode);
972 rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
973 capa, obdo, ioepoch, sync);
976 struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
978 obdo_refresh_inode(inode, obdo, obdo->o_valid);
979 CDEBUG(D_INODE, "objid " DOSTID " size %llu, blocks %llu, blksize %lu\n",
980 POSTID(oi), i_size_read(inode),
981 (unsigned long long)inode->i_blocks,
982 1UL << inode->i_blkbits);
984 ccc_inode_lsm_put(inode, lsm);
988 int ll_merge_lvb(const struct lu_env *env, struct inode *inode)
990 struct ll_inode_info *lli = ll_i2info(inode);
991 struct cl_object *obj = lli->lli_clob;
992 struct cl_attr *attr = ccc_env_thread_attr(env);
996 ll_inode_size_lock(inode);
997 /* merge timestamps the most recently obtained from mds with
998 timestamps obtained from osts */
999 LTIME_S(inode->i_atime) = lli->lli_lvb.lvb_atime;
1000 LTIME_S(inode->i_mtime) = lli->lli_lvb.lvb_mtime;
1001 LTIME_S(inode->i_ctime) = lli->lli_lvb.lvb_ctime;
1003 lvb.lvb_size = i_size_read(inode);
1004 lvb.lvb_blocks = inode->i_blocks;
1005 lvb.lvb_mtime = LTIME_S(inode->i_mtime);
1006 lvb.lvb_atime = LTIME_S(inode->i_atime);
1007 lvb.lvb_ctime = LTIME_S(inode->i_ctime);
1009 cl_object_attr_lock(obj);
1010 rc = cl_object_attr_get(env, obj, attr);
1011 cl_object_attr_unlock(obj);
1014 if (lvb.lvb_atime < attr->cat_atime)
1015 lvb.lvb_atime = attr->cat_atime;
1016 if (lvb.lvb_ctime < attr->cat_ctime)
1017 lvb.lvb_ctime = attr->cat_ctime;
1018 if (lvb.lvb_mtime < attr->cat_mtime)
1019 lvb.lvb_mtime = attr->cat_mtime;
1021 CDEBUG(D_VFSTRACE, DFID" updating i_size %llu\n",
1022 PFID(&lli->lli_fid), attr->cat_size);
1023 cl_isize_write_nolock(inode, attr->cat_size);
1025 inode->i_blocks = attr->cat_blocks;
1027 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
1028 LTIME_S(inode->i_atime) = lvb.lvb_atime;
1029 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
1031 ll_inode_size_unlock(inode);
1036 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
1039 struct obdo obdo = { 0 };
1042 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
1044 st->st_size = obdo.o_size;
1045 st->st_blocks = obdo.o_blocks;
1046 st->st_mtime = obdo.o_mtime;
1047 st->st_atime = obdo.o_atime;
1048 st->st_ctime = obdo.o_ctime;
1053 static bool file_is_noatime(const struct file *file)
1055 const struct vfsmount *mnt = file->f_path.mnt;
1056 const struct inode *inode = file_inode(file);
1058 /* Adapted from file_accessed() and touch_atime().*/
1059 if (file->f_flags & O_NOATIME)
1062 if (inode->i_flags & S_NOATIME)
1065 if (IS_NOATIME(inode))
1068 if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
1071 if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
1074 if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
1080 void ll_io_init(struct cl_io *io, const struct file *file, int write)
1082 struct inode *inode = file_inode(file);
1084 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
1086 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
1087 io->u.ci_wr.wr_sync = file->f_flags & O_SYNC ||
1088 file->f_flags & O_DIRECT ||
1091 io->ci_obj = ll_i2info(inode)->lli_clob;
1092 io->ci_lockreq = CILR_MAYBE;
1093 if (ll_file_nolock(file)) {
1094 io->ci_lockreq = CILR_NEVER;
1095 io->ci_no_srvlock = 1;
1096 } else if (file->f_flags & O_APPEND) {
1097 io->ci_lockreq = CILR_MANDATORY;
1100 io->ci_noatime = file_is_noatime(file);
1104 ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
1105 struct file *file, enum cl_io_type iot,
1106 loff_t *ppos, size_t count)
1108 struct ll_inode_info *lli = ll_i2info(file_inode(file));
1109 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1114 io = ccc_env_thread_io(env);
1115 ll_io_init(io, file, iot == CIT_WRITE);
1117 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
1118 struct vvp_io *vio = vvp_env_io(env);
1119 struct ccc_io *cio = ccc_env_io(env);
1120 int write_mutex_locked = 0;
1122 cio->cui_fd = LUSTRE_FPRIVATE(file);
1123 vio->cui_io_subtype = args->via_io_subtype;
1125 switch (vio->cui_io_subtype) {
1127 cio->cui_iter = args->u.normal.via_iter;
1128 cio->cui_iocb = args->u.normal.via_iocb;
1129 if ((iot == CIT_WRITE) &&
1130 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1131 if (mutex_lock_interruptible(&lli->
1133 result = -ERESTARTSYS;
1136 write_mutex_locked = 1;
1137 } else if (iot == CIT_READ) {
1138 down_read(&lli->lli_trunc_sem);
1142 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
1143 vio->u.splice.cui_flags = args->u.splice.via_flags;
1146 CERROR("Unknown IO type - %u\n", vio->cui_io_subtype);
1149 result = cl_io_loop(env, io);
1150 if (write_mutex_locked)
1151 mutex_unlock(&lli->lli_write_mutex);
1152 else if (args->via_io_subtype == IO_NORMAL && iot == CIT_READ)
1153 up_read(&lli->lli_trunc_sem);
1155 /* cl_io_rw_init() handled IO */
1156 result = io->ci_result;
1159 if (io->ci_nob > 0) {
1160 result = io->ci_nob;
1161 *ppos = io->u.ci_wr.wr.crw_pos;
1165 cl_io_fini(env, io);
1166 /* If any bit been read/written (result != 0), we just return
1167 * short read/write instead of restart io. */
1168 if ((result == 0 || result == -ENODATA) && io->ci_need_restart) {
1169 CDEBUG(D_VFSTRACE, "Restart %s on %pD from %lld, count:%zd\n",
1170 iot == CIT_READ ? "read" : "write",
1171 file, *ppos, count);
1172 LASSERTF(io->ci_nob == 0, "%zd", io->ci_nob);
1176 if (iot == CIT_READ) {
1178 ll_stats_ops_tally(ll_i2sbi(file_inode(file)),
1179 LPROC_LL_READ_BYTES, result);
1180 } else if (iot == CIT_WRITE) {
1182 ll_stats_ops_tally(ll_i2sbi(file_inode(file)),
1183 LPROC_LL_WRITE_BYTES, result);
1184 fd->fd_write_failed = false;
1185 } else if (result != -ERESTARTSYS) {
1186 fd->fd_write_failed = true;
1193 static ssize_t ll_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
1196 struct vvp_io_args *args;
1200 env = cl_env_get(&refcheck);
1202 return PTR_ERR(env);
1204 args = vvp_env_args(env, IO_NORMAL);
1205 args->u.normal.via_iter = to;
1206 args->u.normal.via_iocb = iocb;
1208 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1209 &iocb->ki_pos, iov_iter_count(to));
1210 cl_env_put(env, &refcheck);
1215 * Write to a file (through the page cache).
1217 static ssize_t ll_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
1220 struct vvp_io_args *args;
1224 env = cl_env_get(&refcheck);
1226 return PTR_ERR(env);
1228 args = vvp_env_args(env, IO_NORMAL);
1229 args->u.normal.via_iter = from;
1230 args->u.normal.via_iocb = iocb;
1232 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1233 &iocb->ki_pos, iov_iter_count(from));
1234 cl_env_put(env, &refcheck);
1239 * Send file content (through pagecache) somewhere with helper
1241 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1242 struct pipe_inode_info *pipe, size_t count,
1246 struct vvp_io_args *args;
1250 env = cl_env_get(&refcheck);
1252 return PTR_ERR(env);
1254 args = vvp_env_args(env, IO_SPLICE);
1255 args->u.splice.via_pipe = pipe;
1256 args->u.splice.via_flags = flags;
1258 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1259 cl_env_put(env, &refcheck);
1263 static int ll_lov_recreate(struct inode *inode, struct ost_id *oi, u32 ost_idx)
1265 struct obd_export *exp = ll_i2dtexp(inode);
1266 struct obd_trans_info oti = { 0 };
1267 struct obdo *oa = NULL;
1270 struct lov_stripe_md *lsm = NULL, *lsm2;
1276 lsm = ccc_inode_lsm_get(inode);
1277 if (!lsm_has_objects(lsm)) {
1282 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1283 (lsm->lsm_stripe_count));
1285 OBD_ALLOC_LARGE(lsm2, lsm_size);
1292 oa->o_nlink = ost_idx;
1293 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1294 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1295 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1296 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1297 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
1298 memcpy(lsm2, lsm, lsm_size);
1299 ll_inode_size_lock(inode);
1300 rc = obd_create(NULL, exp, oa, &lsm2, &oti);
1301 ll_inode_size_unlock(inode);
1303 OBD_FREE_LARGE(lsm2, lsm_size);
1306 ccc_inode_lsm_put(inode, lsm);
1311 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1313 struct ll_recreate_obj ucreat;
1316 if (!capable(CFS_CAP_SYS_ADMIN))
1319 if (copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1323 ostid_set_seq_mdt0(&oi);
1324 ostid_set_id(&oi, ucreat.lrc_id);
1325 return ll_lov_recreate(inode, &oi, ucreat.lrc_ost_idx);
1328 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1334 if (!capable(CFS_CAP_SYS_ADMIN))
1337 if (copy_from_user(&fid, (struct lu_fid *)arg, sizeof(fid)))
1340 fid_to_ostid(&fid, &oi);
1341 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1342 return ll_lov_recreate(inode, &oi, ost_idx);
1345 int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
1346 int flags, struct lov_user_md *lum, int lum_size)
1348 struct lov_stripe_md *lsm = NULL;
1349 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1352 lsm = ccc_inode_lsm_get(inode);
1354 ccc_inode_lsm_put(inode, lsm);
1355 CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
1361 ll_inode_size_lock(inode);
1362 rc = ll_intent_file_open(dentry, lum, lum_size, &oit);
1365 rc = oit.d.lustre.it_status;
1369 ll_release_openhandle(inode, &oit);
1372 ll_inode_size_unlock(inode);
1373 ll_intent_release(&oit);
1374 ccc_inode_lsm_put(inode, lsm);
1378 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1382 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1383 struct lov_mds_md **lmmp, int *lmm_size,
1384 struct ptlrpc_request **request)
1386 struct ll_sb_info *sbi = ll_i2sbi(inode);
1387 struct mdt_body *body;
1388 struct lov_mds_md *lmm = NULL;
1389 struct ptlrpc_request *req = NULL;
1390 struct md_op_data *op_data;
1393 rc = ll_get_default_mdsize(sbi, &lmmsize);
1397 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1398 strlen(filename), lmmsize,
1399 LUSTRE_OPC_ANY, NULL);
1400 if (IS_ERR(op_data))
1401 return PTR_ERR(op_data);
1403 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1404 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1405 ll_finish_md_op_data(op_data);
1407 CDEBUG(D_INFO, "md_getattr_name failed on %s: rc %d\n",
1412 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1413 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1415 lmmsize = body->eadatasize;
1417 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1423 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1424 LASSERT(lmm != NULL);
1426 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1427 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1433 * This is coming from the MDS, so is probably in
1434 * little endian. We convert it to host endian before
1435 * passing it to userspace.
1437 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1440 stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1441 if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
1444 /* if function called for directory - we should
1445 * avoid swab not existent lsm objects */
1446 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1447 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1448 if (S_ISREG(body->mode))
1449 lustre_swab_lov_user_md_objects(
1450 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1452 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1453 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1454 if (S_ISREG(body->mode))
1455 lustre_swab_lov_user_md_objects(
1456 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1463 *lmm_size = lmmsize;
1468 static int ll_lov_setea(struct inode *inode, struct file *file,
1471 int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1472 struct lov_user_md *lump;
1473 int lum_size = sizeof(struct lov_user_md) +
1474 sizeof(struct lov_user_ost_data);
1477 if (!capable(CFS_CAP_SYS_ADMIN))
1480 OBD_ALLOC_LARGE(lump, lum_size);
1484 if (copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1485 OBD_FREE_LARGE(lump, lum_size);
1489 rc = ll_lov_setstripe_ea_info(inode, file->f_path.dentry, flags, lump,
1491 cl_lov_delay_create_clear(&file->f_flags);
1493 OBD_FREE_LARGE(lump, lum_size);
1497 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1500 struct lov_user_md_v3 lumv3;
1501 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1502 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1503 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1505 int flags = FMODE_WRITE;
1507 /* first try with v1 which is smaller than v3 */
1508 lum_size = sizeof(struct lov_user_md_v1);
1509 if (copy_from_user(lumv1, lumv1p, lum_size))
1512 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1513 lum_size = sizeof(struct lov_user_md_v3);
1514 if (copy_from_user(&lumv3, lumv3p, lum_size))
1518 rc = ll_lov_setstripe_ea_info(inode, file->f_path.dentry, flags, lumv1,
1520 cl_lov_delay_create_clear(&file->f_flags);
1522 struct lov_stripe_md *lsm;
1525 put_user(0, &lumv1p->lmm_stripe_count);
1527 ll_layout_refresh(inode, &gen);
1528 lsm = ccc_inode_lsm_get(inode);
1529 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1530 0, lsm, (void *)arg);
1531 ccc_inode_lsm_put(inode, lsm);
1536 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1538 struct lov_stripe_md *lsm;
1541 lsm = ccc_inode_lsm_get(inode);
1543 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
1545 ccc_inode_lsm_put(inode, lsm);
1550 ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1552 struct ll_inode_info *lli = ll_i2info(inode);
1553 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1554 struct ccc_grouplock grouplock;
1558 CWARN("group id for group lock must not be 0\n");
1562 if (ll_file_nolock(file))
1565 spin_lock(&lli->lli_lock);
1566 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1567 CWARN("group lock already existed with gid %lu\n",
1568 fd->fd_grouplock.cg_gid);
1569 spin_unlock(&lli->lli_lock);
1572 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1573 spin_unlock(&lli->lli_lock);
1575 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1576 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1580 spin_lock(&lli->lli_lock);
1581 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1582 spin_unlock(&lli->lli_lock);
1583 CERROR("another thread just won the race\n");
1584 cl_put_grouplock(&grouplock);
1588 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1589 fd->fd_grouplock = grouplock;
1590 spin_unlock(&lli->lli_lock);
1592 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1596 static int ll_put_grouplock(struct inode *inode, struct file *file,
1599 struct ll_inode_info *lli = ll_i2info(inode);
1600 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1601 struct ccc_grouplock grouplock;
1603 spin_lock(&lli->lli_lock);
1604 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1605 spin_unlock(&lli->lli_lock);
1606 CWARN("no group lock held\n");
1609 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1611 if (fd->fd_grouplock.cg_gid != arg) {
1612 CWARN("group lock %lu doesn't match current id %lu\n",
1613 arg, fd->fd_grouplock.cg_gid);
1614 spin_unlock(&lli->lli_lock);
1618 grouplock = fd->fd_grouplock;
1619 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1620 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1621 spin_unlock(&lli->lli_lock);
1623 cl_put_grouplock(&grouplock);
1624 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1629 * Close inode open handle
1631 * \param inode [in] inode in question
1632 * \param it [in,out] intent which contains open info and result
1635 * \retval <0 failure
1637 int ll_release_openhandle(struct inode *inode, struct lookup_intent *it)
1639 struct obd_client_handle *och;
1644 /* Root ? Do nothing. */
1645 if (is_root_inode(inode))
1648 /* No open handle to close? Move away */
1649 if (!it_disposition(it, DISP_OPEN_OPEN))
1652 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1654 och = kzalloc(sizeof(*och), GFP_NOFS);
1660 ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
1662 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1665 /* this one is in place of ll_file_open */
1666 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
1667 ptlrpc_req_finished(it->d.lustre.it_data);
1668 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1674 * Get size for inode for which FIEMAP mapping is requested.
1675 * Make the FIEMAP get_info call and returns the result.
1677 static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1680 struct obd_export *exp = ll_i2dtexp(inode);
1681 struct lov_stripe_md *lsm = NULL;
1682 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1683 __u32 vallen = num_bytes;
1686 /* Checks for fiemap flags */
1687 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1688 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1692 /* Check for FIEMAP_FLAG_SYNC */
1693 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1694 rc = filemap_fdatawrite(inode->i_mapping);
1699 lsm = ccc_inode_lsm_get(inode);
1703 /* If the stripe_count > 1 and the application does not understand
1704 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1706 if (lsm->lsm_stripe_count > 1 &&
1707 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER)) {
1712 fm_key.oa.o_oi = lsm->lsm_oi;
1713 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1715 if (i_size_read(inode) == 0) {
1716 rc = ll_glimpse_size(inode);
1721 obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
1722 obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
1723 /* If filesize is 0, then there would be no objects for mapping */
1724 if (fm_key.oa.o_size == 0) {
1725 fiemap->fm_mapped_extents = 0;
1730 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1732 rc = obd_get_info(NULL, exp, sizeof(fm_key), &fm_key, &vallen,
1735 CERROR("obd_get_info failed: rc = %d\n", rc);
1738 ccc_inode_lsm_put(inode, lsm);
1742 int ll_fid2path(struct inode *inode, void __user *arg)
1744 struct obd_export *exp = ll_i2mdexp(inode);
1745 const struct getinfo_fid2path __user *gfin = arg;
1746 struct getinfo_fid2path *gfout;
1751 if (!capable(CFS_CAP_DAC_READ_SEARCH) &&
1752 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
1755 /* Only need to get the buflen */
1756 if (get_user(pathlen, &gfin->gf_pathlen))
1759 if (pathlen > PATH_MAX)
1762 outsize = sizeof(*gfout) + pathlen;
1764 gfout = kzalloc(outsize, GFP_NOFS);
1768 if (copy_from_user(gfout, arg, sizeof(*gfout))) {
1773 /* Call mdc_iocontrol */
1774 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1778 if (copy_to_user(arg, gfout, outsize))
1786 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1788 struct ll_user_fiemap *fiemap_s;
1789 size_t num_bytes, ret_bytes;
1790 unsigned int extent_count;
1793 /* Get the extent count so we can calculate the size of
1794 * required fiemap buffer */
1795 if (get_user(extent_count,
1796 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1800 (SIZE_MAX - sizeof(*fiemap_s)) / sizeof(struct ll_fiemap_extent))
1802 num_bytes = sizeof(*fiemap_s) + (extent_count *
1803 sizeof(struct ll_fiemap_extent));
1805 OBD_ALLOC_LARGE(fiemap_s, num_bytes);
1806 if (fiemap_s == NULL)
1809 /* get the fiemap value */
1810 if (copy_from_user(fiemap_s, (struct ll_user_fiemap __user *)arg,
1811 sizeof(*fiemap_s))) {
1816 /* If fm_extent_count is non-zero, read the first extent since
1817 * it is used to calculate end_offset and device from previous
1820 if (copy_from_user(&fiemap_s->fm_extents[0],
1821 (char __user *)arg + sizeof(*fiemap_s),
1822 sizeof(struct ll_fiemap_extent))) {
1828 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1832 ret_bytes = sizeof(struct ll_user_fiemap);
1834 if (extent_count != 0)
1835 ret_bytes += (fiemap_s->fm_mapped_extents *
1836 sizeof(struct ll_fiemap_extent));
1838 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1842 OBD_FREE_LARGE(fiemap_s, num_bytes);
1847 * Read the data_version for inode.
1849 * This value is computed using stripe object version on OST.
1850 * Version is computed using server side locking.
1852 * @param extent_lock Take extent lock. Not needed if a process is already
1853 * holding the OST object group locks.
1855 int ll_data_version(struct inode *inode, __u64 *data_version,
1858 struct lov_stripe_md *lsm = NULL;
1859 struct ll_sb_info *sbi = ll_i2sbi(inode);
1860 struct obdo *obdo = NULL;
1863 /* If no stripe, we consider version is 0. */
1864 lsm = ccc_inode_lsm_get(inode);
1865 if (!lsm_has_objects(lsm)) {
1867 CDEBUG(D_INODE, "No object for inode\n");
1872 obdo = kzalloc(sizeof(*obdo), GFP_NOFS);
1878 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
1880 if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
1883 *data_version = obdo->o_data_version;
1888 ccc_inode_lsm_put(inode, lsm);
1893 * Trigger a HSM release request for the provided inode.
1895 int ll_hsm_release(struct inode *inode)
1897 struct cl_env_nest nest;
1899 struct obd_client_handle *och = NULL;
1900 __u64 data_version = 0;
1904 CDEBUG(D_INODE, "%s: Releasing file "DFID".\n",
1905 ll_get_fsname(inode->i_sb, NULL, 0),
1906 PFID(&ll_i2info(inode)->lli_fid));
1908 och = ll_lease_open(inode, NULL, FMODE_WRITE, MDS_OPEN_RELEASE);
1914 /* Grab latest data_version and [am]time values */
1915 rc = ll_data_version(inode, &data_version, 1);
1919 env = cl_env_nested_get(&nest);
1925 ll_merge_lvb(env, inode);
1926 cl_env_nested_put(&nest, env);
1928 /* Release the file.
1929 * NB: lease lock handle is released in mdc_hsm_release_pack() because
1930 * we still need it to pack l_remote_handle to MDT. */
1931 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
1937 if (och != NULL && !IS_ERR(och)) /* close the file */
1938 ll_lease_close(och, inode, NULL);
1943 struct ll_swap_stack {
1944 struct iattr ia1, ia2;
1946 struct inode *inode1, *inode2;
1947 bool check_dv1, check_dv2;
1950 static int ll_swap_layouts(struct file *file1, struct file *file2,
1951 struct lustre_swap_layouts *lsl)
1953 struct mdc_swap_layouts msl;
1954 struct md_op_data *op_data;
1957 struct ll_swap_stack *llss = NULL;
1960 llss = kzalloc(sizeof(*llss), GFP_NOFS);
1964 llss->inode1 = file_inode(file1);
1965 llss->inode2 = file_inode(file2);
1967 if (!S_ISREG(llss->inode2->i_mode)) {
1972 if (inode_permission(llss->inode1, MAY_WRITE) ||
1973 inode_permission(llss->inode2, MAY_WRITE)) {
1978 if (llss->inode2->i_sb != llss->inode1->i_sb) {
1983 /* we use 2 bool because it is easier to swap than 2 bits */
1984 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV1)
1985 llss->check_dv1 = true;
1987 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV2)
1988 llss->check_dv2 = true;
1990 /* we cannot use lsl->sl_dvX directly because we may swap them */
1991 llss->dv1 = lsl->sl_dv1;
1992 llss->dv2 = lsl->sl_dv2;
1994 rc = lu_fid_cmp(ll_inode2fid(llss->inode1), ll_inode2fid(llss->inode2));
1995 if (rc == 0) /* same file, done! */ {
2000 if (rc < 0) { /* sequentialize it */
2001 swap(llss->inode1, llss->inode2);
2003 swap(llss->dv1, llss->dv2);
2004 swap(llss->check_dv1, llss->check_dv2);
2008 if (gid != 0) { /* application asks to flush dirty cache */
2009 rc = ll_get_grouplock(llss->inode1, file1, gid);
2013 rc = ll_get_grouplock(llss->inode2, file2, gid);
2015 ll_put_grouplock(llss->inode1, file1, gid);
2020 /* to be able to restore mtime and atime after swap
2021 * we need to first save them */
2023 (SWAP_LAYOUTS_KEEP_MTIME | SWAP_LAYOUTS_KEEP_ATIME)) {
2024 llss->ia1.ia_mtime = llss->inode1->i_mtime;
2025 llss->ia1.ia_atime = llss->inode1->i_atime;
2026 llss->ia1.ia_valid = ATTR_MTIME | ATTR_ATIME;
2027 llss->ia2.ia_mtime = llss->inode2->i_mtime;
2028 llss->ia2.ia_atime = llss->inode2->i_atime;
2029 llss->ia2.ia_valid = ATTR_MTIME | ATTR_ATIME;
2032 /* ultimate check, before swapping the layouts we check if
2033 * dataversion has changed (if requested) */
2034 if (llss->check_dv1) {
2035 rc = ll_data_version(llss->inode1, &dv, 0);
2038 if (dv != llss->dv1) {
2044 if (llss->check_dv2) {
2045 rc = ll_data_version(llss->inode2, &dv, 0);
2048 if (dv != llss->dv2) {
2054 /* struct md_op_data is used to send the swap args to the mdt
2055 * only flags is missing, so we use struct mdc_swap_layouts
2056 * through the md_op_data->op_data */
2057 /* flags from user space have to be converted before they are send to
2058 * server, no flag is sent today, they are only used on the client */
2061 op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0,
2062 0, LUSTRE_OPC_ANY, &msl);
2063 if (IS_ERR(op_data)) {
2064 rc = PTR_ERR(op_data);
2068 rc = obd_iocontrol(LL_IOC_LOV_SWAP_LAYOUTS, ll_i2mdexp(llss->inode1),
2069 sizeof(*op_data), op_data, NULL);
2070 ll_finish_md_op_data(op_data);
2074 ll_put_grouplock(llss->inode2, file2, gid);
2075 ll_put_grouplock(llss->inode1, file1, gid);
2078 /* rc can be set from obd_iocontrol() or from a GOTO(putgl, ...) */
2082 /* clear useless flags */
2083 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_MTIME)) {
2084 llss->ia1.ia_valid &= ~ATTR_MTIME;
2085 llss->ia2.ia_valid &= ~ATTR_MTIME;
2088 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_ATIME)) {
2089 llss->ia1.ia_valid &= ~ATTR_ATIME;
2090 llss->ia2.ia_valid &= ~ATTR_ATIME;
2093 /* update time if requested */
2095 if (llss->ia2.ia_valid != 0) {
2096 mutex_lock(&llss->inode1->i_mutex);
2097 rc = ll_setattr(file1->f_path.dentry, &llss->ia2);
2098 mutex_unlock(&llss->inode1->i_mutex);
2101 if (llss->ia1.ia_valid != 0) {
2104 mutex_lock(&llss->inode2->i_mutex);
2105 rc1 = ll_setattr(file2->f_path.dentry, &llss->ia1);
2106 mutex_unlock(&llss->inode2->i_mutex);
2117 static int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss)
2119 struct md_op_data *op_data;
2122 /* Non-root users are forbidden to set or clear flags which are
2123 * NOT defined in HSM_USER_MASK. */
2124 if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
2125 !capable(CFS_CAP_SYS_ADMIN))
2128 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2129 LUSTRE_OPC_ANY, hss);
2130 if (IS_ERR(op_data))
2131 return PTR_ERR(op_data);
2133 rc = obd_iocontrol(LL_IOC_HSM_STATE_SET, ll_i2mdexp(inode),
2134 sizeof(*op_data), op_data, NULL);
2136 ll_finish_md_op_data(op_data);
2141 static int ll_hsm_import(struct inode *inode, struct file *file,
2142 struct hsm_user_import *hui)
2144 struct hsm_state_set *hss = NULL;
2145 struct iattr *attr = NULL;
2149 if (!S_ISREG(inode->i_mode))
2153 hss = kzalloc(sizeof(*hss), GFP_NOFS);
2157 hss->hss_valid = HSS_SETMASK | HSS_ARCHIVE_ID;
2158 hss->hss_archive_id = hui->hui_archive_id;
2159 hss->hss_setmask = HS_ARCHIVED | HS_EXISTS | HS_RELEASED;
2160 rc = ll_hsm_state_set(inode, hss);
2164 attr = kzalloc(sizeof(*attr), GFP_NOFS);
2170 attr->ia_mode = hui->hui_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
2171 attr->ia_mode |= S_IFREG;
2172 attr->ia_uid = make_kuid(&init_user_ns, hui->hui_uid);
2173 attr->ia_gid = make_kgid(&init_user_ns, hui->hui_gid);
2174 attr->ia_size = hui->hui_size;
2175 attr->ia_mtime.tv_sec = hui->hui_mtime;
2176 attr->ia_mtime.tv_nsec = hui->hui_mtime_ns;
2177 attr->ia_atime.tv_sec = hui->hui_atime;
2178 attr->ia_atime.tv_nsec = hui->hui_atime_ns;
2180 attr->ia_valid = ATTR_SIZE | ATTR_MODE | ATTR_FORCE |
2181 ATTR_UID | ATTR_GID |
2182 ATTR_MTIME | ATTR_MTIME_SET |
2183 ATTR_ATIME | ATTR_ATIME_SET;
2185 mutex_lock(&inode->i_mutex);
2187 rc = ll_setattr_raw(file->f_path.dentry, attr, true);
2191 mutex_unlock(&inode->i_mutex);
2200 ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2202 struct inode *inode = file_inode(file);
2203 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2206 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
2207 inode->i_generation, inode, cmd);
2208 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
2210 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
2211 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
2215 case LL_IOC_GETFLAGS:
2216 /* Get the current value of the file flags */
2217 return put_user(fd->fd_flags, (int *)arg);
2218 case LL_IOC_SETFLAGS:
2219 case LL_IOC_CLRFLAGS:
2220 /* Set or clear specific file flags */
2221 /* XXX This probably needs checks to ensure the flags are
2222 * not abused, and to handle any flag side effects.
2224 if (get_user(flags, (int *) arg))
2227 if (cmd == LL_IOC_SETFLAGS) {
2228 if ((flags & LL_FILE_IGNORE_LOCK) &&
2229 !(file->f_flags & O_DIRECT)) {
2230 CERROR("%s: unable to disable locking on non-O_DIRECT file\n",
2235 fd->fd_flags |= flags;
2237 fd->fd_flags &= ~flags;
2240 case LL_IOC_LOV_SETSTRIPE:
2241 return ll_lov_setstripe(inode, file, arg);
2242 case LL_IOC_LOV_SETEA:
2243 return ll_lov_setea(inode, file, arg);
2244 case LL_IOC_LOV_SWAP_LAYOUTS: {
2246 struct lustre_swap_layouts lsl;
2248 if (copy_from_user(&lsl, (char *)arg,
2249 sizeof(struct lustre_swap_layouts)))
2252 if ((file->f_flags & O_ACCMODE) == 0) /* O_RDONLY */
2255 file2 = fget(lsl.sl_fd);
2260 if ((file2->f_flags & O_ACCMODE) != 0) /* O_WRONLY or O_RDWR */
2261 rc = ll_swap_layouts(file, file2, &lsl);
2265 case LL_IOC_LOV_GETSTRIPE:
2266 return ll_lov_getstripe(inode, arg);
2267 case LL_IOC_RECREATE_OBJ:
2268 return ll_lov_recreate_obj(inode, arg);
2269 case LL_IOC_RECREATE_FID:
2270 return ll_lov_recreate_fid(inode, arg);
2271 case FSFILT_IOC_FIEMAP:
2272 return ll_ioctl_fiemap(inode, arg);
2273 case FSFILT_IOC_GETFLAGS:
2274 case FSFILT_IOC_SETFLAGS:
2275 return ll_iocontrol(inode, file, cmd, arg);
2276 case FSFILT_IOC_GETVERSION_OLD:
2277 case FSFILT_IOC_GETVERSION:
2278 return put_user(inode->i_generation, (int *)arg);
2279 case LL_IOC_GROUP_LOCK:
2280 return ll_get_grouplock(inode, file, arg);
2281 case LL_IOC_GROUP_UNLOCK:
2282 return ll_put_grouplock(inode, file, arg);
2283 case IOC_OBD_STATFS:
2284 return ll_obd_statfs(inode, (void *)arg);
2286 /* We need to special case any other ioctls we want to handle,
2287 * to send them to the MDS/OST as appropriate and to properly
2288 * network encode the arg field.
2289 case FSFILT_IOC_SETVERSION_OLD:
2290 case FSFILT_IOC_SETVERSION:
2292 case LL_IOC_FLUSHCTX:
2293 return ll_flush_ctx(inode);
2294 case LL_IOC_PATH2FID: {
2295 if (copy_to_user((void *)arg, ll_inode2fid(inode),
2296 sizeof(struct lu_fid)))
2301 case OBD_IOC_FID2PATH:
2302 return ll_fid2path(inode, (void *)arg);
2303 case LL_IOC_DATA_VERSION: {
2304 struct ioc_data_version idv;
2307 if (copy_from_user(&idv, (char *)arg, sizeof(idv)))
2310 rc = ll_data_version(inode, &idv.idv_version,
2311 !(idv.idv_flags & LL_DV_NOFLUSH));
2313 if (rc == 0 && copy_to_user((char *) arg, &idv, sizeof(idv)))
2319 case LL_IOC_GET_MDTIDX: {
2322 mdtidx = ll_get_mdt_idx(inode);
2326 if (put_user((int)mdtidx, (int *)arg))
2331 case OBD_IOC_GETDTNAME:
2332 case OBD_IOC_GETMDNAME:
2333 return ll_get_obd_name(inode, cmd, arg);
2334 case LL_IOC_HSM_STATE_GET: {
2335 struct md_op_data *op_data;
2336 struct hsm_user_state *hus;
2339 hus = kzalloc(sizeof(*hus), GFP_NOFS);
2343 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2344 LUSTRE_OPC_ANY, hus);
2345 if (IS_ERR(op_data)) {
2347 return PTR_ERR(op_data);
2350 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
2353 if (copy_to_user((void *)arg, hus, sizeof(*hus)))
2356 ll_finish_md_op_data(op_data);
2360 case LL_IOC_HSM_STATE_SET: {
2361 struct hsm_state_set *hss;
2364 hss = kzalloc(sizeof(*hss), GFP_NOFS);
2368 if (copy_from_user(hss, (char *)arg, sizeof(*hss))) {
2373 rc = ll_hsm_state_set(inode, hss);
2378 case LL_IOC_HSM_ACTION: {
2379 struct md_op_data *op_data;
2380 struct hsm_current_action *hca;
2383 hca = kzalloc(sizeof(*hca), GFP_NOFS);
2387 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2388 LUSTRE_OPC_ANY, hca);
2389 if (IS_ERR(op_data)) {
2391 return PTR_ERR(op_data);
2394 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
2397 if (copy_to_user((char *)arg, hca, sizeof(*hca)))
2400 ll_finish_md_op_data(op_data);
2404 case LL_IOC_SET_LEASE: {
2405 struct ll_inode_info *lli = ll_i2info(inode);
2406 struct obd_client_handle *och = NULL;
2412 if (!(file->f_mode & FMODE_WRITE))
2417 if (!(file->f_mode & FMODE_READ))
2422 mutex_lock(&lli->lli_och_mutex);
2423 if (fd->fd_lease_och != NULL) {
2424 och = fd->fd_lease_och;
2425 fd->fd_lease_och = NULL;
2427 mutex_unlock(&lli->lli_och_mutex);
2430 mode = och->och_flags &
2431 (FMODE_READ|FMODE_WRITE);
2432 rc = ll_lease_close(och, inode, &lease_broken);
2433 if (rc == 0 && lease_broken)
2439 /* return the type of lease or error */
2440 return rc < 0 ? rc : (int)mode;
2445 CDEBUG(D_INODE, "Set lease with mode %d\n", mode);
2447 /* apply for lease */
2448 och = ll_lease_open(inode, file, mode, 0);
2450 return PTR_ERR(och);
2453 mutex_lock(&lli->lli_och_mutex);
2454 if (fd->fd_lease_och == NULL) {
2455 fd->fd_lease_och = och;
2458 mutex_unlock(&lli->lli_och_mutex);
2460 /* impossible now that only excl is supported for now */
2461 ll_lease_close(och, inode, &lease_broken);
2466 case LL_IOC_GET_LEASE: {
2467 struct ll_inode_info *lli = ll_i2info(inode);
2468 struct ldlm_lock *lock = NULL;
2471 mutex_lock(&lli->lli_och_mutex);
2472 if (fd->fd_lease_och != NULL) {
2473 struct obd_client_handle *och = fd->fd_lease_och;
2475 lock = ldlm_handle2lock(&och->och_lease_handle);
2477 lock_res_and_lock(lock);
2478 if (!ldlm_is_cancel(lock))
2479 rc = och->och_flags &
2480 (FMODE_READ | FMODE_WRITE);
2481 unlock_res_and_lock(lock);
2482 ldlm_lock_put(lock);
2485 mutex_unlock(&lli->lli_och_mutex);
2488 case LL_IOC_HSM_IMPORT: {
2489 struct hsm_user_import *hui;
2491 hui = kzalloc(sizeof(*hui), GFP_NOFS);
2495 if (copy_from_user(hui, (void *)arg, sizeof(*hui))) {
2500 rc = ll_hsm_import(inode, file, hui);
2509 ll_iocontrol_call(inode, file, cmd, arg, &err))
2512 return obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
2519 static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
2521 struct inode *inode = file_inode(file);
2522 loff_t retval, eof = 0;
2524 retval = offset + ((origin == SEEK_END) ? i_size_read(inode) :
2525 (origin == SEEK_CUR) ? file->f_pos : 0);
2526 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%llu=%#llx(%d)\n",
2527 inode->i_ino, inode->i_generation, inode, retval, retval,
2529 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
2531 if (origin == SEEK_END || origin == SEEK_HOLE || origin == SEEK_DATA) {
2532 retval = ll_glimpse_size(inode);
2535 eof = i_size_read(inode);
2538 retval = generic_file_llseek_size(file, offset, origin,
2539 ll_file_maxbytes(inode), eof);
2543 static int ll_flush(struct file *file, fl_owner_t id)
2545 struct inode *inode = file_inode(file);
2546 struct ll_inode_info *lli = ll_i2info(inode);
2547 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2550 LASSERT(!S_ISDIR(inode->i_mode));
2552 /* catch async errors that were recorded back when async writeback
2553 * failed for pages in this mapping. */
2554 rc = lli->lli_async_rc;
2555 lli->lli_async_rc = 0;
2556 err = lov_read_and_clear_async_rc(lli->lli_clob);
2560 /* The application has been told write failure already.
2561 * Do not report failure again. */
2562 if (fd->fd_write_failed)
2564 return rc ? -EIO : 0;
2568 * Called to make sure a portion of file has been written out.
2569 * if @mode is not CL_FSYNC_LOCAL, it will send OST_SYNC RPCs to OST.
2571 * Return how many pages have been written.
2573 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
2574 enum cl_fsync_mode mode, int ignore_layout)
2576 struct cl_env_nest nest;
2579 struct obd_capa *capa = NULL;
2580 struct cl_fsync_io *fio;
2583 if (mode != CL_FSYNC_NONE && mode != CL_FSYNC_LOCAL &&
2584 mode != CL_FSYNC_DISCARD && mode != CL_FSYNC_ALL)
2587 env = cl_env_nested_get(&nest);
2589 return PTR_ERR(env);
2591 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
2593 io = ccc_env_thread_io(env);
2594 io->ci_obj = cl_i2info(inode)->lli_clob;
2595 io->ci_ignore_layout = ignore_layout;
2597 /* initialize parameters for sync */
2598 fio = &io->u.ci_fsync;
2599 fio->fi_capa = capa;
2600 fio->fi_start = start;
2602 fio->fi_fid = ll_inode2fid(inode);
2603 fio->fi_mode = mode;
2604 fio->fi_nr_written = 0;
2606 if (cl_io_init(env, io, CIT_FSYNC, io->ci_obj) == 0)
2607 result = cl_io_loop(env, io);
2609 result = io->ci_result;
2611 result = fio->fi_nr_written;
2612 cl_io_fini(env, io);
2613 cl_env_nested_put(&nest, env);
2620 int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
2622 struct inode *inode = file_inode(file);
2623 struct ll_inode_info *lli = ll_i2info(inode);
2624 struct ptlrpc_request *req;
2625 struct obd_capa *oc;
2628 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
2629 inode->i_generation, inode);
2630 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
2632 rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
2633 mutex_lock(&inode->i_mutex);
2635 /* catch async errors that were recorded back when async writeback
2636 * failed for pages in this mapping. */
2637 if (!S_ISDIR(inode->i_mode)) {
2638 err = lli->lli_async_rc;
2639 lli->lli_async_rc = 0;
2642 err = lov_read_and_clear_async_rc(lli->lli_clob);
2647 oc = ll_mdscapa_get(inode);
2648 err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2654 ptlrpc_req_finished(req);
2656 if (S_ISREG(inode->i_mode)) {
2657 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2659 err = cl_sync_file_range(inode, start, end, CL_FSYNC_ALL, 0);
2660 if (rc == 0 && err < 0)
2663 fd->fd_write_failed = true;
2665 fd->fd_write_failed = false;
2668 mutex_unlock(&inode->i_mutex);
2673 ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
2675 struct inode *inode = file_inode(file);
2676 struct ll_sb_info *sbi = ll_i2sbi(inode);
2677 struct ldlm_enqueue_info einfo = {
2678 .ei_type = LDLM_FLOCK,
2679 .ei_cb_cp = ldlm_flock_completion_ast,
2680 .ei_cbdata = file_lock,
2682 struct md_op_data *op_data;
2683 struct lustre_handle lockh = {0};
2684 ldlm_policy_data_t flock = {{0}};
2689 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
2690 inode->i_ino, file_lock);
2692 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
2694 if (file_lock->fl_flags & FL_FLOCK)
2695 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
2696 else if (!(file_lock->fl_flags & FL_POSIX))
2699 flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
2700 flock.l_flock.pid = file_lock->fl_pid;
2701 flock.l_flock.start = file_lock->fl_start;
2702 flock.l_flock.end = file_lock->fl_end;
2704 /* Somewhat ugly workaround for svc lockd.
2705 * lockd installs custom fl_lmops->lm_compare_owner that checks
2706 * for the fl_owner to be the same (which it always is on local node
2707 * I guess between lockd processes) and then compares pid.
2708 * As such we assign pid to the owner field to make it all work,
2709 * conflict with normal locks is unlikely since pid space and
2710 * pointer space for current->files are not intersecting */
2711 if (file_lock->fl_lmops && file_lock->fl_lmops->lm_compare_owner)
2712 flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
2714 switch (file_lock->fl_type) {
2716 einfo.ei_mode = LCK_PR;
2719 /* An unlock request may or may not have any relation to
2720 * existing locks so we may not be able to pass a lock handle
2721 * via a normal ldlm_lock_cancel() request. The request may even
2722 * unlock a byte range in the middle of an existing lock. In
2723 * order to process an unlock request we need all of the same
2724 * information that is given with a normal read or write record
2725 * lock request. To avoid creating another ldlm unlock (cancel)
2726 * message we'll treat a LCK_NL flock request as an unlock. */
2727 einfo.ei_mode = LCK_NL;
2730 einfo.ei_mode = LCK_PW;
2733 CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n",
2734 file_lock->fl_type);
2749 flags = LDLM_FL_BLOCK_NOWAIT;
2755 flags = LDLM_FL_TEST_LOCK;
2756 /* Save the old mode so that if the mode in the lock changes we
2757 * can decrement the appropriate reader or writer refcount. */
2758 file_lock->fl_type = einfo.ei_mode;
2761 CERROR("unknown fcntl lock command: %d\n", cmd);
2765 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2766 LUSTRE_OPC_ANY, NULL);
2767 if (IS_ERR(op_data))
2768 return PTR_ERR(op_data);
2770 CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#llx, mode=%u, start=%llu, end=%llu\n",
2771 inode->i_ino, flock.l_flock.pid, flags, einfo.ei_mode,
2772 flock.l_flock.start, flock.l_flock.end);
2774 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2775 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2777 if ((file_lock->fl_flags & FL_FLOCK) &&
2778 (rc == 0 || file_lock->fl_type == F_UNLCK))
2779 rc2 = flock_lock_file_wait(file, file_lock);
2780 if ((file_lock->fl_flags & FL_POSIX) &&
2781 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
2782 !(flags & LDLM_FL_TEST_LOCK))
2783 rc2 = posix_lock_file_wait(file, file_lock);
2785 if (rc2 && file_lock->fl_type != F_UNLCK) {
2786 einfo.ei_mode = LCK_NL;
2787 md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2788 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2792 ll_finish_md_op_data(op_data);
2798 ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
2804 * test if some locks matching bits and l_req_mode are acquired
2805 * - bits can be in different locks
2806 * - if found clear the common lock bits in *bits
2807 * - the bits not found, are kept in *bits
2809 * \param bits [IN] searched lock bits [IN]
2810 * \param l_req_mode [IN] searched lock mode
2811 * \retval boolean, true iff all bits are found
2813 int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode)
2815 struct lustre_handle lockh;
2816 ldlm_policy_data_t policy;
2817 ldlm_mode_t mode = (l_req_mode == LCK_MINMODE) ?
2818 (LCK_CR|LCK_CW|LCK_PR|LCK_PW) : l_req_mode;
2826 fid = &ll_i2info(inode)->lli_fid;
2827 CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
2828 ldlm_lockname[mode]);
2830 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
2831 for (i = 0; i <= MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
2832 policy.l_inodebits.bits = *bits & (1 << i);
2833 if (policy.l_inodebits.bits == 0)
2836 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
2837 &policy, mode, &lockh)) {
2838 struct ldlm_lock *lock;
2840 lock = ldlm_handle2lock(&lockh);
2843 ~(lock->l_policy_data.l_inodebits.bits);
2844 LDLM_LOCK_PUT(lock);
2846 *bits &= ~policy.l_inodebits.bits;
2853 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
2854 struct lustre_handle *lockh, __u64 flags,
2857 ldlm_policy_data_t policy = { .l_inodebits = {bits} };
2861 fid = &ll_i2info(inode)->lli_fid;
2862 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2864 rc = md_lock_match(ll_i2mdexp(inode), LDLM_FL_BLOCK_GRANTED|flags,
2865 fid, LDLM_IBITS, &policy, mode, lockh);
2870 static int ll_inode_revalidate_fini(struct inode *inode, int rc)
2872 /* Already unlinked. Just update nlink and return success */
2873 if (rc == -ENOENT) {
2875 /* This path cannot be hit for regular files unless in
2876 * case of obscure races, so no need to validate size.
2878 if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
2880 } else if (rc != 0) {
2881 CDEBUG_LIMIT((rc == -EACCES || rc == -EIDRM) ? D_INFO : D_ERROR,
2882 "%s: revalidate FID "DFID" error: rc = %d\n",
2883 ll_get_fsname(inode->i_sb, NULL, 0),
2884 PFID(ll_inode2fid(inode)), rc);
2890 static int __ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
2892 struct inode *inode = d_inode(dentry);
2893 struct ptlrpc_request *req = NULL;
2894 struct obd_export *exp;
2897 LASSERT(inode != NULL);
2899 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%pd\n",
2900 inode->i_ino, inode->i_generation, inode, dentry);
2902 exp = ll_i2mdexp(inode);
2904 /* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC.
2905 * But under CMD case, it caused some lock issues, should be fixed
2906 * with new CMD ibits lock. See bug 12718 */
2907 if (exp_connect_flags(exp) & OBD_CONNECT_ATTRFID) {
2908 struct lookup_intent oit = { .it_op = IT_GETATTR };
2909 struct md_op_data *op_data;
2911 if (ibits == MDS_INODELOCK_LOOKUP)
2912 oit.it_op = IT_LOOKUP;
2914 /* Call getattr by fid, so do not provide name at all. */
2915 op_data = ll_prep_md_op_data(NULL, inode,
2917 LUSTRE_OPC_ANY, NULL);
2918 if (IS_ERR(op_data))
2919 return PTR_ERR(op_data);
2921 oit.it_create_mode |= M_CHECK_STALE;
2922 rc = md_intent_lock(exp, op_data, NULL, 0,
2923 /* we are not interested in name
2926 ll_md_blocking_ast, 0);
2927 ll_finish_md_op_data(op_data);
2928 oit.it_create_mode &= ~M_CHECK_STALE;
2930 rc = ll_inode_revalidate_fini(inode, rc);
2934 rc = ll_revalidate_it_finish(req, &oit, inode);
2936 ll_intent_release(&oit);
2940 /* Unlinked? Unhash dentry, so it is not picked up later by
2941 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
2942 here to preserve get_cwd functionality on 2.6.
2944 if (!d_inode(dentry)->i_nlink)
2945 d_lustre_invalidate(dentry, 0);
2947 ll_lookup_finish_locks(&oit, inode);
2948 } else if (!ll_have_md_lock(d_inode(dentry), &ibits, LCK_MINMODE)) {
2949 struct ll_sb_info *sbi = ll_i2sbi(d_inode(dentry));
2950 u64 valid = OBD_MD_FLGETATTR;
2951 struct md_op_data *op_data;
2954 if (S_ISREG(inode->i_mode)) {
2955 rc = ll_get_default_mdsize(sbi, &ealen);
2958 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
2961 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2962 0, ealen, LUSTRE_OPC_ANY,
2964 if (IS_ERR(op_data))
2965 return PTR_ERR(op_data);
2967 op_data->op_valid = valid;
2968 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
2969 * capa for this inode. Because we only keep capas of dirs
2971 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2972 ll_finish_md_op_data(op_data);
2974 rc = ll_inode_revalidate_fini(inode, rc);
2978 rc = ll_prep_inode(&inode, req, NULL, NULL);
2981 ptlrpc_req_finished(req);
2985 static int ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
2987 struct inode *inode = d_inode(dentry);
2990 rc = __ll_inode_revalidate(dentry, ibits);
2994 /* if object isn't regular file, don't validate size */
2995 if (!S_ISREG(inode->i_mode)) {
2996 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
2997 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
2998 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
3000 /* In case of restore, the MDT has the right size and has
3001 * already send it back without granting the layout lock,
3002 * inode is up-to-date so glimpse is useless.
3003 * Also to glimpse we need the layout, in case of a running
3004 * restore the MDT holds the layout lock so the glimpse will
3005 * block up to the end of restore (getattr will block)
3007 if (!(ll_i2info(inode)->lli_flags & LLIF_FILE_RESTORING))
3008 rc = ll_glimpse_size(inode);
3013 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
3015 struct inode *inode = d_inode(de);
3016 struct ll_sb_info *sbi = ll_i2sbi(inode);
3017 struct ll_inode_info *lli = ll_i2info(inode);
3020 res = ll_inode_revalidate(de, MDS_INODELOCK_UPDATE |
3021 MDS_INODELOCK_LOOKUP);
3022 ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
3027 stat->dev = inode->i_sb->s_dev;
3028 if (ll_need_32bit_api(sbi))
3029 stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
3031 stat->ino = inode->i_ino;
3032 stat->mode = inode->i_mode;
3033 stat->nlink = inode->i_nlink;
3034 stat->uid = inode->i_uid;
3035 stat->gid = inode->i_gid;
3036 stat->rdev = inode->i_rdev;
3037 stat->atime = inode->i_atime;
3038 stat->mtime = inode->i_mtime;
3039 stat->ctime = inode->i_ctime;
3040 stat->blksize = 1 << inode->i_blkbits;
3042 stat->size = i_size_read(inode);
3043 stat->blocks = inode->i_blocks;
3048 static int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3049 __u64 start, __u64 len)
3053 struct ll_user_fiemap *fiemap;
3054 unsigned int extent_count = fieinfo->fi_extents_max;
3056 num_bytes = sizeof(*fiemap) + (extent_count *
3057 sizeof(struct ll_fiemap_extent));
3058 OBD_ALLOC_LARGE(fiemap, num_bytes);
3063 fiemap->fm_flags = fieinfo->fi_flags;
3064 fiemap->fm_extent_count = fieinfo->fi_extents_max;
3065 fiemap->fm_start = start;
3066 fiemap->fm_length = len;
3067 if (extent_count > 0)
3068 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
3069 sizeof(struct ll_fiemap_extent));
3071 rc = ll_do_fiemap(inode, fiemap, num_bytes);
3073 fieinfo->fi_flags = fiemap->fm_flags;
3074 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
3075 if (extent_count > 0)
3076 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
3077 fiemap->fm_mapped_extents *
3078 sizeof(struct ll_fiemap_extent));
3080 OBD_FREE_LARGE(fiemap, num_bytes);
3084 struct posix_acl *ll_get_acl(struct inode *inode, int type)
3086 struct ll_inode_info *lli = ll_i2info(inode);
3087 struct posix_acl *acl = NULL;
3089 spin_lock(&lli->lli_lock);
3090 /* VFS' acl_permission_check->check_acl will release the refcount */
3091 acl = posix_acl_dup(lli->lli_posix_acl);
3092 spin_unlock(&lli->lli_lock);
3098 int ll_inode_permission(struct inode *inode, int mask)
3102 #ifdef MAY_NOT_BLOCK
3103 if (mask & MAY_NOT_BLOCK)
3107 /* as root inode are NOT getting validated in lookup operation,
3108 * need to do it before permission check. */
3110 if (is_root_inode(inode)) {
3111 rc = __ll_inode_revalidate(inode->i_sb->s_root,
3112 MDS_INODELOCK_LOOKUP);
3117 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
3118 inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
3120 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
3121 return lustre_check_remote_perm(inode, mask);
3123 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
3124 rc = generic_permission(inode, mask);
3129 /* -o localflock - only provides locally consistent flock locks */
3130 struct file_operations ll_file_operations = {
3131 .read_iter = ll_file_read_iter,
3132 .write_iter = ll_file_write_iter,
3133 .unlocked_ioctl = ll_file_ioctl,
3134 .open = ll_file_open,
3135 .release = ll_file_release,
3136 .mmap = ll_file_mmap,
3137 .llseek = ll_file_seek,
3138 .splice_read = ll_file_splice_read,
3143 struct file_operations ll_file_operations_flock = {
3144 .read_iter = ll_file_read_iter,
3145 .write_iter = ll_file_write_iter,
3146 .unlocked_ioctl = ll_file_ioctl,
3147 .open = ll_file_open,
3148 .release = ll_file_release,
3149 .mmap = ll_file_mmap,
3150 .llseek = ll_file_seek,
3151 .splice_read = ll_file_splice_read,
3154 .flock = ll_file_flock,
3155 .lock = ll_file_flock
3158 /* These are for -o noflock - to return ENOSYS on flock calls */
3159 struct file_operations ll_file_operations_noflock = {
3160 .read_iter = ll_file_read_iter,
3161 .write_iter = ll_file_write_iter,
3162 .unlocked_ioctl = ll_file_ioctl,
3163 .open = ll_file_open,
3164 .release = ll_file_release,
3165 .mmap = ll_file_mmap,
3166 .llseek = ll_file_seek,
3167 .splice_read = ll_file_splice_read,
3170 .flock = ll_file_noflock,
3171 .lock = ll_file_noflock
3174 struct inode_operations ll_file_inode_operations = {
3175 .setattr = ll_setattr,
3176 .getattr = ll_getattr,
3177 .permission = ll_inode_permission,
3178 .setxattr = ll_setxattr,
3179 .getxattr = ll_getxattr,
3180 .listxattr = ll_listxattr,
3181 .removexattr = ll_removexattr,
3182 .fiemap = ll_fiemap,
3183 .get_acl = ll_get_acl,
3186 /* dynamic ioctl number support routines */
3187 static struct llioc_ctl_data {
3188 struct rw_semaphore ioc_sem;
3189 struct list_head ioc_head;
3191 __RWSEM_INITIALIZER(llioc.ioc_sem),
3192 LIST_HEAD_INIT(llioc.ioc_head)
3197 struct list_head iocd_list;
3198 unsigned int iocd_size;
3199 llioc_callback_t iocd_cb;
3200 unsigned int iocd_count;
3201 unsigned int iocd_cmd[0];
3204 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
3207 struct llioc_data *in_data = NULL;
3209 if (cb == NULL || cmd == NULL ||
3210 count > LLIOC_MAX_CMD || count < 0)
3213 size = sizeof(*in_data) + count * sizeof(unsigned int);
3214 in_data = kzalloc(size, GFP_NOFS);
3218 memset(in_data, 0, sizeof(*in_data));
3219 in_data->iocd_size = size;
3220 in_data->iocd_cb = cb;
3221 in_data->iocd_count = count;
3222 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
3224 down_write(&llioc.ioc_sem);
3225 list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
3226 up_write(&llioc.ioc_sem);
3230 EXPORT_SYMBOL(ll_iocontrol_register);
3232 void ll_iocontrol_unregister(void *magic)
3234 struct llioc_data *tmp;
3239 down_write(&llioc.ioc_sem);
3240 list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
3242 list_del(&tmp->iocd_list);
3243 up_write(&llioc.ioc_sem);
3249 up_write(&llioc.ioc_sem);
3251 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
3253 EXPORT_SYMBOL(ll_iocontrol_unregister);
3255 static enum llioc_iter
3256 ll_iocontrol_call(struct inode *inode, struct file *file,
3257 unsigned int cmd, unsigned long arg, int *rcp)
3259 enum llioc_iter ret = LLIOC_CONT;
3260 struct llioc_data *data;
3261 int rc = -EINVAL, i;
3263 down_read(&llioc.ioc_sem);
3264 list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
3265 for (i = 0; i < data->iocd_count; i++) {
3266 if (cmd != data->iocd_cmd[i])
3269 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
3273 if (ret == LLIOC_STOP)
3276 up_read(&llioc.ioc_sem);
3283 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
3285 struct ll_inode_info *lli = ll_i2info(inode);
3286 struct cl_env_nest nest;
3290 if (lli->lli_clob == NULL)
3293 env = cl_env_nested_get(&nest);
3295 return PTR_ERR(env);
3297 result = cl_conf_set(env, lli->lli_clob, conf);
3298 cl_env_nested_put(&nest, env);
3300 if (conf->coc_opc == OBJECT_CONF_SET) {
3301 struct ldlm_lock *lock = conf->coc_lock;
3303 LASSERT(lock != NULL);
3304 LASSERT(ldlm_has_layout(lock));
3306 /* it can only be allowed to match after layout is
3307 * applied to inode otherwise false layout would be
3308 * seen. Applying layout should happen before dropping
3309 * the intent lock. */
3310 ldlm_lock_allow_match(lock);
3316 /* Fetch layout from MDT with getxattr request, if it's not ready yet */
3317 static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
3320 struct ll_sb_info *sbi = ll_i2sbi(inode);
3321 struct obd_capa *oc;
3322 struct ptlrpc_request *req;
3323 struct mdt_body *body;
3329 CDEBUG(D_INODE, DFID" LVB_READY=%d l_lvb_data=%p l_lvb_len=%d\n",
3330 PFID(ll_inode2fid(inode)), !!(lock->l_flags & LDLM_FL_LVB_READY),
3331 lock->l_lvb_data, lock->l_lvb_len);
3333 if ((lock->l_lvb_data != NULL) && (lock->l_flags & LDLM_FL_LVB_READY))
3336 /* if layout lock was granted right away, the layout is returned
3337 * within DLM_LVB of dlm reply; otherwise if the lock was ever
3338 * blocked and then granted via completion ast, we have to fetch
3339 * layout here. Please note that we can't use the LVB buffer in
3340 * completion AST because it doesn't have a large enough buffer */
3341 oc = ll_mdscapa_get(inode);
3342 rc = ll_get_default_mdsize(sbi, &lmmsize);
3344 rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
3345 OBD_MD_FLXATTR, XATTR_NAME_LOV, NULL, 0,
3351 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3357 lmmsize = body->eadatasize;
3358 if (lmmsize == 0) /* empty layout */ {
3363 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, lmmsize);
3369 OBD_ALLOC_LARGE(lvbdata, lmmsize);
3370 if (lvbdata == NULL) {
3375 memcpy(lvbdata, lmm, lmmsize);
3376 lock_res_and_lock(lock);
3377 if (lock->l_lvb_data != NULL)
3378 OBD_FREE_LARGE(lock->l_lvb_data, lock->l_lvb_len);
3380 lock->l_lvb_data = lvbdata;
3381 lock->l_lvb_len = lmmsize;
3382 unlock_res_and_lock(lock);
3385 ptlrpc_req_finished(req);
3390 * Apply the layout to the inode. Layout lock is held and will be released
3393 static int ll_layout_lock_set(struct lustre_handle *lockh, ldlm_mode_t mode,
3394 struct inode *inode, __u32 *gen, bool reconf)
3396 struct ll_inode_info *lli = ll_i2info(inode);
3397 struct ll_sb_info *sbi = ll_i2sbi(inode);
3398 struct ldlm_lock *lock;
3399 struct lustre_md md = { NULL };
3400 struct cl_object_conf conf;
3403 bool wait_layout = false;
3405 LASSERT(lustre_handle_is_used(lockh));
3407 lock = ldlm_handle2lock(lockh);
3408 LASSERT(lock != NULL);
3409 LASSERT(ldlm_has_layout(lock));
3411 LDLM_DEBUG(lock, "File %p/"DFID" being reconfigured: %d.\n",
3412 inode, PFID(&lli->lli_fid), reconf);
3414 /* in case this is a caching lock and reinstate with new inode */
3415 md_set_lock_data(sbi->ll_md_exp, &lockh->cookie, inode, NULL);
3417 lock_res_and_lock(lock);
3418 lvb_ready = !!(lock->l_flags & LDLM_FL_LVB_READY);
3419 unlock_res_and_lock(lock);
3420 /* checking lvb_ready is racy but this is okay. The worst case is
3421 * that multi processes may configure the file on the same time. */
3422 if (lvb_ready || !reconf) {
3425 /* layout_gen must be valid if layout lock is not
3426 * cancelled and stripe has already set */
3427 *gen = ll_layout_version_get(lli);
3433 rc = ll_layout_fetch(inode, lock);
3437 /* for layout lock, lmm is returned in lock's lvb.
3438 * lvb_data is immutable if the lock is held so it's safe to access it
3439 * without res lock. See the description in ldlm_lock_decref_internal()
3440 * for the condition to free lvb_data of layout lock */
3441 if (lock->l_lvb_data != NULL) {
3442 rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm,
3443 lock->l_lvb_data, lock->l_lvb_len);
3445 *gen = LL_LAYOUT_GEN_EMPTY;
3447 *gen = md.lsm->lsm_layout_gen;
3450 CERROR("%s: file "DFID" unpackmd error: %d\n",
3451 ll_get_fsname(inode->i_sb, NULL, 0),
3452 PFID(&lli->lli_fid), rc);
3458 /* set layout to file. Unlikely this will fail as old layout was
3459 * surely eliminated */
3460 memset(&conf, 0, sizeof(conf));
3461 conf.coc_opc = OBJECT_CONF_SET;
3462 conf.coc_inode = inode;
3463 conf.coc_lock = lock;
3464 conf.u.coc_md = &md;
3465 rc = ll_layout_conf(inode, &conf);
3468 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
3470 /* refresh layout failed, need to wait */
3471 wait_layout = rc == -EBUSY;
3474 LDLM_LOCK_PUT(lock);
3475 ldlm_lock_decref(lockh, mode);
3477 /* wait for IO to complete if it's still being used. */
3479 CDEBUG(D_INODE, "%s: %p/"DFID" wait for layout reconf.\n",
3480 ll_get_fsname(inode->i_sb, NULL, 0),
3481 inode, PFID(&lli->lli_fid));
3483 memset(&conf, 0, sizeof(conf));
3484 conf.coc_opc = OBJECT_CONF_WAIT;
3485 conf.coc_inode = inode;
3486 rc = ll_layout_conf(inode, &conf);
3490 CDEBUG(D_INODE, "file: "DFID" waiting layout return: %d.\n",
3491 PFID(&lli->lli_fid), rc);
3497 * This function checks if there exists a LAYOUT lock on the client side,
3498 * or enqueues it if it doesn't have one in cache.
3500 * This function will not hold layout lock so it may be revoked any time after
3501 * this function returns. Any operations depend on layout should be redone
3504 * This function should be called before lov_io_init() to get an uptodate
3505 * layout version, the caller should save the version number and after IO
3506 * is finished, this function should be called again to verify that layout
3507 * is not changed during IO time.
3509 int ll_layout_refresh(struct inode *inode, __u32 *gen)
3511 struct ll_inode_info *lli = ll_i2info(inode);
3512 struct ll_sb_info *sbi = ll_i2sbi(inode);
3513 struct md_op_data *op_data;
3514 struct lookup_intent it;
3515 struct lustre_handle lockh;
3517 struct ldlm_enqueue_info einfo = {
3518 .ei_type = LDLM_IBITS,
3520 .ei_cb_bl = ll_md_blocking_ast,
3521 .ei_cb_cp = ldlm_completion_ast,
3525 *gen = ll_layout_version_get(lli);
3526 if (!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK) || *gen != LL_LAYOUT_GEN_NONE)
3530 LASSERT(fid_is_sane(ll_inode2fid(inode)));
3531 LASSERT(S_ISREG(inode->i_mode));
3533 /* take layout lock mutex to enqueue layout lock exclusively. */
3534 mutex_lock(&lli->lli_layout_mutex);
3537 /* mostly layout lock is caching on the local side, so try to match
3538 * it before grabbing layout lock mutex. */
3539 mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0,
3540 LCK_CR | LCK_CW | LCK_PR | LCK_PW);
3541 if (mode != 0) { /* hit cached lock */
3542 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
3546 mutex_unlock(&lli->lli_layout_mutex);
3550 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
3551 0, 0, LUSTRE_OPC_ANY, NULL);
3552 if (IS_ERR(op_data)) {
3553 mutex_unlock(&lli->lli_layout_mutex);
3554 return PTR_ERR(op_data);
3557 /* have to enqueue one */
3558 memset(&it, 0, sizeof(it));
3559 it.it_op = IT_LAYOUT;
3560 lockh.cookie = 0ULL;
3562 LDLM_DEBUG_NOLOCK("%s: requeue layout lock for file %p/"DFID".\n",
3563 ll_get_fsname(inode->i_sb, NULL, 0), inode,
3564 PFID(&lli->lli_fid));
3566 rc = md_enqueue(sbi->ll_md_exp, &einfo, &it, op_data, &lockh,
3568 if (it.d.lustre.it_data != NULL)
3569 ptlrpc_req_finished(it.d.lustre.it_data);
3570 it.d.lustre.it_data = NULL;
3572 ll_finish_md_op_data(op_data);
3574 mode = it.d.lustre.it_lock_mode;
3575 it.d.lustre.it_lock_mode = 0;
3576 ll_intent_drop_lock(&it);
3579 /* set lock data in case this is a new lock */
3580 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
3581 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
3585 mutex_unlock(&lli->lli_layout_mutex);
3591 * This function send a restore request to the MDT
3593 int ll_layout_restore(struct inode *inode)
3595 struct hsm_user_request *hur;
3598 len = sizeof(struct hsm_user_request) +
3599 sizeof(struct hsm_user_item);
3600 hur = kzalloc(len, GFP_NOFS);
3604 hur->hur_request.hr_action = HUA_RESTORE;
3605 hur->hur_request.hr_archive_id = 0;
3606 hur->hur_request.hr_flags = 0;
3607 memcpy(&hur->hur_user_item[0].hui_fid, &ll_i2info(inode)->lli_fid,
3608 sizeof(hur->hur_user_item[0].hui_fid));
3609 hur->hur_user_item[0].hui_extent.length = -1;
3610 hur->hur_request.hr_itemcount = 1;
3611 rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp,