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;
200 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
201 if (!(body->valid & OBD_MD_FLRELEASED))
205 ll_finish_md_op_data(op_data);
208 if (exp_connect_som(exp) && !epoch_close &&
209 S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
210 ll_queue_done_writing(inode, LLIF_DONE_WRITING);
212 md_clear_open_replay_data(md_exp, och);
213 /* Free @och if it is not waiting for DONE_WRITING. */
214 och->och_fh.cookie = DEAD_HANDLE_MAGIC;
217 if (req) /* This is close request */
218 ptlrpc_req_finished(req);
222 int ll_md_real_close(struct inode *inode, fmode_t fmode)
224 struct ll_inode_info *lli = ll_i2info(inode);
225 struct obd_client_handle **och_p;
226 struct obd_client_handle *och;
230 if (fmode & FMODE_WRITE) {
231 och_p = &lli->lli_mds_write_och;
232 och_usecount = &lli->lli_open_fd_write_count;
233 } else if (fmode & FMODE_EXEC) {
234 och_p = &lli->lli_mds_exec_och;
235 och_usecount = &lli->lli_open_fd_exec_count;
237 LASSERT(fmode & FMODE_READ);
238 och_p = &lli->lli_mds_read_och;
239 och_usecount = &lli->lli_open_fd_read_count;
242 mutex_lock(&lli->lli_och_mutex);
243 if (*och_usecount > 0) {
244 /* There are still users of this handle, so skip
246 mutex_unlock(&lli->lli_och_mutex);
252 mutex_unlock(&lli->lli_och_mutex);
255 /* There might be a race and this handle may already
257 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
264 static int ll_md_close(struct obd_export *md_exp, struct inode *inode,
267 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
268 struct ll_inode_info *lli = ll_i2info(inode);
270 __u64 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
271 struct lustre_handle lockh;
272 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
275 /* clear group lock, if present */
276 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
277 ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
279 if (fd->fd_lease_och != NULL) {
282 /* Usually the lease is not released when the
283 * application crashed, we need to release here. */
284 rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken);
285 CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n",
286 PFID(&lli->lli_fid), rc, lease_broken);
288 fd->fd_lease_och = NULL;
291 if (fd->fd_och != NULL) {
292 rc = ll_close_inode_openhandle(md_exp, inode, fd->fd_och, NULL);
297 /* Let's see if we have good enough OPEN lock on the file and if
298 we can skip talking to MDS */
300 mutex_lock(&lli->lli_och_mutex);
301 if (fd->fd_omode & FMODE_WRITE) {
303 LASSERT(lli->lli_open_fd_write_count);
304 lli->lli_open_fd_write_count--;
305 } else if (fd->fd_omode & FMODE_EXEC) {
307 LASSERT(lli->lli_open_fd_exec_count);
308 lli->lli_open_fd_exec_count--;
311 LASSERT(lli->lli_open_fd_read_count);
312 lli->lli_open_fd_read_count--;
314 mutex_unlock(&lli->lli_och_mutex);
316 if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
317 LDLM_IBITS, &policy, lockmode, &lockh))
318 rc = ll_md_real_close(inode, fd->fd_omode);
321 LUSTRE_FPRIVATE(file) = NULL;
322 ll_file_data_put(fd);
323 ll_capa_close(inode);
328 /* While this returns an error code, fput() the caller does not, so we need
329 * to make every effort to clean up all of our state here. Also, applications
330 * rarely check close errors and even if an error is returned they will not
331 * re-try the close call.
333 int ll_file_release(struct inode *inode, struct file *file)
335 struct ll_file_data *fd;
336 struct ll_sb_info *sbi = ll_i2sbi(inode);
337 struct ll_inode_info *lli = ll_i2info(inode);
340 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
341 inode->i_generation, inode);
343 #ifdef CONFIG_FS_POSIX_ACL
344 if (sbi->ll_flags & LL_SBI_RMT_CLIENT && is_root_inode(inode)) {
345 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
348 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
349 fd->fd_flags &= ~LL_FILE_RMTACL;
350 rct_del(&sbi->ll_rct, current_pid());
351 et_search_free(&sbi->ll_et, current_pid());
356 if (!is_root_inode(inode))
357 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
358 fd = LUSTRE_FPRIVATE(file);
361 /* The last ref on @file, maybe not the owner pid of statahead.
362 * Different processes can open the same dir, "ll_opendir_key" means:
363 * it is me that should stop the statahead thread. */
364 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
365 lli->lli_opendir_pid != 0)
366 ll_stop_statahead(inode, lli->lli_opendir_key);
368 if (is_root_inode(inode)) {
369 LUSTRE_FPRIVATE(file) = NULL;
370 ll_file_data_put(fd);
374 if (!S_ISDIR(inode->i_mode)) {
375 lov_read_and_clear_async_rc(lli->lli_clob);
376 lli->lli_async_rc = 0;
379 rc = ll_md_close(sbi->ll_md_exp, inode, file);
381 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
382 libcfs_debug_dumplog();
387 static int ll_intent_file_open(struct dentry *dentry, void *lmm,
388 int lmmsize, struct lookup_intent *itp)
390 struct inode *inode = dentry->d_inode;
391 struct ll_sb_info *sbi = ll_i2sbi(inode);
392 struct dentry *parent = dentry->d_parent;
393 const char *name = dentry->d_name.name;
394 const int len = dentry->d_name.len;
395 struct md_op_data *op_data;
396 struct ptlrpc_request *req;
397 __u32 opc = LUSTRE_OPC_ANY;
400 /* Usually we come here only for NFSD, and we want open lock.
401 But we can also get here with pre 2.6.15 patchless kernels, and in
402 that case that lock is also ok */
403 /* We can also get here if there was cached open handle in revalidate_it
404 * but it disappeared while we were getting from there to ll_file_open.
405 * But this means this file was closed and immediately opened which
406 * makes a good candidate for using OPEN lock */
407 /* If lmmsize & lmm are not 0, we are just setting stripe info
408 * parameters. No need for the open lock */
409 if (lmm == NULL && lmmsize == 0) {
410 itp->it_flags |= MDS_OPEN_LOCK;
411 if (itp->it_flags & FMODE_WRITE)
412 opc = LUSTRE_OPC_CREATE;
415 op_data = ll_prep_md_op_data(NULL, parent->d_inode,
419 return PTR_ERR(op_data);
421 itp->it_flags |= MDS_OPEN_BY_FID;
422 rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
423 0 /*unused */, &req, ll_md_blocking_ast, 0);
424 ll_finish_md_op_data(op_data);
426 /* reason for keep own exit path - don`t flood log
427 * with messages with -ESTALE errors.
429 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
430 it_open_error(DISP_OPEN_OPEN, itp))
432 ll_release_openhandle(inode, itp);
436 if (it_disposition(itp, DISP_LOOKUP_NEG)) {
441 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
442 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
443 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
447 rc = ll_prep_inode(&inode, req, NULL, itp);
448 if (!rc && itp->d.lustre.it_lock_mode)
449 ll_set_lock_data(sbi->ll_md_exp, inode, itp, NULL);
452 ptlrpc_req_finished(req);
453 ll_intent_drop_lock(itp);
459 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
460 * not believe attributes if a few ioepoch holders exist. Attributes for
461 * previous ioepoch if new one is opened are also skipped by MDS.
463 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
465 if (ioepoch && lli->lli_ioepoch != ioepoch) {
466 lli->lli_ioepoch = ioepoch;
467 CDEBUG(D_INODE, "Epoch %llu opened on "DFID"\n",
468 ioepoch, PFID(&lli->lli_fid));
472 static int ll_och_fill(struct obd_export *md_exp, struct lookup_intent *it,
473 struct obd_client_handle *och)
475 struct ptlrpc_request *req = it->d.lustre.it_data;
476 struct mdt_body *body;
478 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
479 och->och_fh = body->handle;
480 och->och_fid = body->fid1;
481 och->och_lease_handle.cookie = it->d.lustre.it_lock_handle;
482 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
483 och->och_flags = it->it_flags;
485 return md_set_open_replay_data(md_exp, och, it);
488 static int ll_local_open(struct file *file, struct lookup_intent *it,
489 struct ll_file_data *fd, struct obd_client_handle *och)
491 struct inode *inode = file_inode(file);
492 struct ll_inode_info *lli = ll_i2info(inode);
494 LASSERT(!LUSTRE_FPRIVATE(file));
499 struct ptlrpc_request *req = it->d.lustre.it_data;
500 struct mdt_body *body;
503 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
507 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
508 ll_ioepoch_open(lli, body->ioepoch);
511 LUSTRE_FPRIVATE(file) = fd;
512 ll_readahead_init(inode, &fd->fd_ras);
513 fd->fd_omode = it->it_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
517 /* Open a file, and (for the very first open) create objects on the OSTs at
518 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
519 * creation or open until ll_lov_setstripe() ioctl is called.
521 * If we already have the stripe MD locally then we don't request it in
522 * md_open(), by passing a lmm_size = 0.
524 * It is up to the application to ensure no other processes open this file
525 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
526 * used. We might be able to avoid races of that sort by getting lli_open_sem
527 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
528 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
530 int ll_file_open(struct inode *inode, struct file *file)
532 struct ll_inode_info *lli = ll_i2info(inode);
533 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
534 .it_flags = file->f_flags };
535 struct obd_client_handle **och_p = NULL;
536 __u64 *och_usecount = NULL;
537 struct ll_file_data *fd;
538 int rc = 0, opendir_set = 0;
540 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
541 inode->i_generation, inode, file->f_flags);
543 it = file->private_data; /* XXX: compat macro */
544 file->private_data = NULL; /* prevent ll_local_open assertion */
546 fd = ll_file_data_get();
553 if (S_ISDIR(inode->i_mode)) {
554 spin_lock(&lli->lli_sa_lock);
555 if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
556 lli->lli_opendir_pid == 0) {
557 lli->lli_opendir_key = fd;
558 lli->lli_opendir_pid = current_pid();
561 spin_unlock(&lli->lli_sa_lock);
564 if (is_root_inode(inode)) {
565 LUSTRE_FPRIVATE(file) = fd;
569 if (!it || !it->d.lustre.it_disposition) {
570 /* Convert f_flags into access mode. We cannot use file->f_mode,
571 * because everything but O_ACCMODE mask was stripped from
573 if ((oit.it_flags + 1) & O_ACCMODE)
575 if (file->f_flags & O_TRUNC)
576 oit.it_flags |= FMODE_WRITE;
578 /* kernel only call f_op->open in dentry_open. filp_open calls
579 * dentry_open after call to open_namei that checks permissions.
580 * Only nfsd_open call dentry_open directly without checking
581 * permissions and because of that this code below is safe. */
582 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
583 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
585 /* We do not want O_EXCL here, presumably we opened the file
586 * already? XXX - NFS implications? */
587 oit.it_flags &= ~O_EXCL;
589 /* bug20584, if "it_flags" contains O_CREAT, the file will be
590 * created if necessary, then "IT_CREAT" should be set to keep
591 * consistent with it */
592 if (oit.it_flags & O_CREAT)
593 oit.it_op |= IT_CREAT;
599 /* Let's see if we have file open on MDS already. */
600 if (it->it_flags & FMODE_WRITE) {
601 och_p = &lli->lli_mds_write_och;
602 och_usecount = &lli->lli_open_fd_write_count;
603 } else if (it->it_flags & FMODE_EXEC) {
604 och_p = &lli->lli_mds_exec_och;
605 och_usecount = &lli->lli_open_fd_exec_count;
607 och_p = &lli->lli_mds_read_och;
608 och_usecount = &lli->lli_open_fd_read_count;
611 mutex_lock(&lli->lli_och_mutex);
612 if (*och_p) { /* Open handle is present */
613 if (it_disposition(it, DISP_OPEN_OPEN)) {
614 /* Well, there's extra open request that we do not need,
615 let's close it somehow. This will decref request. */
616 rc = it_open_error(DISP_OPEN_OPEN, it);
618 mutex_unlock(&lli->lli_och_mutex);
622 ll_release_openhandle(inode, it);
626 rc = ll_local_open(file, it, fd, NULL);
629 mutex_unlock(&lli->lli_och_mutex);
633 LASSERT(*och_usecount == 0);
634 if (!it->d.lustre.it_disposition) {
635 /* We cannot just request lock handle now, new ELC code
636 means that one of other OPEN locks for this file
637 could be cancelled, and since blocking ast handler
638 would attempt to grab och_mutex as well, that would
639 result in a deadlock */
640 mutex_unlock(&lli->lli_och_mutex);
641 it->it_create_mode |= M_CHECK_STALE;
642 rc = ll_intent_file_open(file->f_path.dentry, NULL, 0, it);
643 it->it_create_mode &= ~M_CHECK_STALE;
649 *och_p = kzalloc(sizeof(struct obd_client_handle), GFP_NOFS);
657 /* md_intent_lock() didn't get a request ref if there was an
658 * open error, so don't do cleanup on the request here
660 /* XXX (green): Should not we bail out on any error here, not
661 * just open error? */
662 rc = it_open_error(DISP_OPEN_OPEN, it);
666 LASSERT(it_disposition(it, DISP_ENQ_OPEN_REF));
668 rc = ll_local_open(file, it, fd, *och_p);
672 mutex_unlock(&lli->lli_och_mutex);
675 /* Must do this outside lli_och_mutex lock to prevent deadlock where
676 different kind of OPEN lock for this same inode gets cancelled
677 by ldlm_cancel_lru */
678 if (!S_ISREG(inode->i_mode))
683 if (!lli->lli_has_smd &&
684 (cl_is_lov_delay_create(file->f_flags) ||
685 (file->f_mode & FMODE_WRITE) == 0)) {
686 CDEBUG(D_INODE, "object creation was delayed\n");
689 cl_lov_delay_create_clear(&file->f_flags);
694 if (och_p && *och_p) {
695 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
696 *och_p = NULL; /* OBD_FREE writes some magic there */
699 mutex_unlock(&lli->lli_och_mutex);
702 if (opendir_set != 0)
703 ll_stop_statahead(inode, lli->lli_opendir_key);
705 ll_file_data_put(fd);
707 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
710 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
711 ptlrpc_req_finished(it->d.lustre.it_data);
712 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
718 static int ll_md_blocking_lease_ast(struct ldlm_lock *lock,
719 struct ldlm_lock_desc *desc, void *data, int flag)
722 struct lustre_handle lockh;
725 case LDLM_CB_BLOCKING:
726 ldlm_lock2handle(lock, &lockh);
727 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
729 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
733 case LDLM_CB_CANCELING:
741 * Acquire a lease and open the file.
743 static struct obd_client_handle *
744 ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode,
747 struct lookup_intent it = { .it_op = IT_OPEN };
748 struct ll_sb_info *sbi = ll_i2sbi(inode);
749 struct md_op_data *op_data;
750 struct ptlrpc_request *req;
751 struct lustre_handle old_handle = { 0 };
752 struct obd_client_handle *och = NULL;
756 if (fmode != FMODE_WRITE && fmode != FMODE_READ)
757 return ERR_PTR(-EINVAL);
760 struct ll_inode_info *lli = ll_i2info(inode);
761 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
762 struct obd_client_handle **och_p;
765 if (!(fmode & file->f_mode) || (file->f_mode & FMODE_EXEC))
766 return ERR_PTR(-EPERM);
768 /* Get the openhandle of the file */
770 mutex_lock(&lli->lli_och_mutex);
771 if (fd->fd_lease_och != NULL) {
772 mutex_unlock(&lli->lli_och_mutex);
776 if (fd->fd_och == NULL) {
777 if (file->f_mode & FMODE_WRITE) {
778 LASSERT(lli->lli_mds_write_och != NULL);
779 och_p = &lli->lli_mds_write_och;
780 och_usecount = &lli->lli_open_fd_write_count;
782 LASSERT(lli->lli_mds_read_och != NULL);
783 och_p = &lli->lli_mds_read_och;
784 och_usecount = &lli->lli_open_fd_read_count;
786 if (*och_usecount == 1) {
793 mutex_unlock(&lli->lli_och_mutex);
794 if (rc < 0) /* more than 1 opener */
797 LASSERT(fd->fd_och != NULL);
798 old_handle = fd->fd_och->och_fh;
801 och = kzalloc(sizeof(*och), GFP_NOFS);
803 return ERR_PTR(-ENOMEM);
805 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
806 LUSTRE_OPC_ANY, NULL);
807 if (IS_ERR(op_data)) {
808 rc = PTR_ERR(op_data);
812 /* To tell the MDT this openhandle is from the same owner */
813 op_data->op_handle = old_handle;
815 it.it_flags = fmode | open_flags;
816 it.it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID | MDS_OPEN_LEASE;
817 rc = md_intent_lock(sbi->ll_md_exp, op_data, NULL, 0, &it, 0, &req,
818 ll_md_blocking_lease_ast,
819 /* LDLM_FL_NO_LRU: To not put the lease lock into LRU list, otherwise
820 * it can be cancelled which may mislead applications that the lease is
822 * LDLM_FL_EXCL: Set this flag so that it won't be matched by normal
823 * open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast
824 * doesn't deal with openhandle, so normal openhandle will be leaked. */
825 LDLM_FL_NO_LRU | LDLM_FL_EXCL);
826 ll_finish_md_op_data(op_data);
827 ptlrpc_req_finished(req);
831 if (it_disposition(&it, DISP_LOOKUP_NEG)) {
836 rc = it_open_error(DISP_OPEN_OPEN, &it);
840 LASSERT(it_disposition(&it, DISP_ENQ_OPEN_REF));
841 ll_och_fill(sbi->ll_md_exp, &it, och);
843 if (!it_disposition(&it, DISP_OPEN_LEASE)) /* old server? */ {
848 /* already get lease, handle lease lock */
849 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
850 if (it.d.lustre.it_lock_mode == 0 ||
851 it.d.lustre.it_lock_bits != MDS_INODELOCK_OPEN) {
852 /* open lock must return for lease */
853 CERROR(DFID "lease granted but no open lock, %d/%llu.\n",
854 PFID(ll_inode2fid(inode)), it.d.lustre.it_lock_mode,
855 it.d.lustre.it_lock_bits);
860 ll_intent_release(&it);
864 rc2 = ll_close_inode_openhandle(sbi->ll_md_exp, inode, och, NULL);
866 CERROR("Close openhandle returned %d\n", rc2);
868 /* cancel open lock */
869 if (it.d.lustre.it_lock_mode != 0) {
870 ldlm_lock_decref_and_cancel(&och->och_lease_handle,
871 it.d.lustre.it_lock_mode);
872 it.d.lustre.it_lock_mode = 0;
875 ll_intent_release(&it);
882 * Release lease and close the file.
883 * It will check if the lease has ever broken.
885 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
888 struct ldlm_lock *lock;
889 bool cancelled = true;
892 lock = ldlm_handle2lock(&och->och_lease_handle);
894 lock_res_and_lock(lock);
895 cancelled = ldlm_is_cancel(lock);
896 unlock_res_and_lock(lock);
900 CDEBUG(D_INODE, "lease for "DFID" broken? %d\n",
901 PFID(&ll_i2info(inode)->lli_fid), cancelled);
904 ldlm_cli_cancel(&och->och_lease_handle, 0);
905 if (lease_broken != NULL)
906 *lease_broken = cancelled;
908 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
913 /* Fills the obdo with the attributes for the lsm */
914 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
915 struct obd_capa *capa, struct obdo *obdo,
916 __u64 ioepoch, int sync)
918 struct ptlrpc_request_set *set;
919 struct obd_info oinfo = { { { 0 } } };
922 LASSERT(lsm != NULL);
926 oinfo.oi_oa->o_oi = lsm->lsm_oi;
927 oinfo.oi_oa->o_mode = S_IFREG;
928 oinfo.oi_oa->o_ioepoch = ioepoch;
929 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
930 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
931 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
932 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
933 OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
934 OBD_MD_FLDATAVERSION;
935 oinfo.oi_capa = capa;
937 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
938 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
941 set = ptlrpc_prep_set();
943 CERROR("can't allocate ptlrpc set\n");
946 rc = obd_getattr_async(exp, &oinfo, set);
948 rc = ptlrpc_set_wait(set);
949 ptlrpc_set_destroy(set);
952 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
953 OBD_MD_FLATIME | OBD_MD_FLMTIME |
954 OBD_MD_FLCTIME | OBD_MD_FLSIZE |
955 OBD_MD_FLDATAVERSION);
960 * Performs the getattr on the inode and updates its fields.
961 * If @sync != 0, perform the getattr under the server-side lock.
963 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
964 __u64 ioepoch, int sync)
966 struct obd_capa *capa = ll_mdscapa_get(inode);
967 struct lov_stripe_md *lsm;
970 lsm = ccc_inode_lsm_get(inode);
971 rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
972 capa, obdo, ioepoch, sync);
975 struct ost_id *oi = lsm ? &lsm->lsm_oi : &obdo->o_oi;
977 obdo_refresh_inode(inode, obdo, obdo->o_valid);
978 CDEBUG(D_INODE, "objid " DOSTID " size %llu, blocks %llu, blksize %lu\n",
979 POSTID(oi), i_size_read(inode),
980 (unsigned long long)inode->i_blocks,
981 1UL << inode->i_blkbits);
983 ccc_inode_lsm_put(inode, lsm);
987 int ll_merge_lvb(const struct lu_env *env, struct inode *inode)
989 struct ll_inode_info *lli = ll_i2info(inode);
990 struct cl_object *obj = lli->lli_clob;
991 struct cl_attr *attr = ccc_env_thread_attr(env);
995 ll_inode_size_lock(inode);
996 /* merge timestamps the most recently obtained from mds with
997 timestamps obtained from osts */
998 LTIME_S(inode->i_atime) = lli->lli_lvb.lvb_atime;
999 LTIME_S(inode->i_mtime) = lli->lli_lvb.lvb_mtime;
1000 LTIME_S(inode->i_ctime) = lli->lli_lvb.lvb_ctime;
1002 lvb.lvb_size = i_size_read(inode);
1003 lvb.lvb_blocks = inode->i_blocks;
1004 lvb.lvb_mtime = LTIME_S(inode->i_mtime);
1005 lvb.lvb_atime = LTIME_S(inode->i_atime);
1006 lvb.lvb_ctime = LTIME_S(inode->i_ctime);
1008 cl_object_attr_lock(obj);
1009 rc = cl_object_attr_get(env, obj, attr);
1010 cl_object_attr_unlock(obj);
1013 if (lvb.lvb_atime < attr->cat_atime)
1014 lvb.lvb_atime = attr->cat_atime;
1015 if (lvb.lvb_ctime < attr->cat_ctime)
1016 lvb.lvb_ctime = attr->cat_ctime;
1017 if (lvb.lvb_mtime < attr->cat_mtime)
1018 lvb.lvb_mtime = attr->cat_mtime;
1020 CDEBUG(D_VFSTRACE, DFID" updating i_size %llu\n",
1021 PFID(&lli->lli_fid), attr->cat_size);
1022 cl_isize_write_nolock(inode, attr->cat_size);
1024 inode->i_blocks = attr->cat_blocks;
1026 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
1027 LTIME_S(inode->i_atime) = lvb.lvb_atime;
1028 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
1030 ll_inode_size_unlock(inode);
1035 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
1038 struct obdo obdo = { 0 };
1041 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
1043 st->st_size = obdo.o_size;
1044 st->st_blocks = obdo.o_blocks;
1045 st->st_mtime = obdo.o_mtime;
1046 st->st_atime = obdo.o_atime;
1047 st->st_ctime = obdo.o_ctime;
1052 static bool file_is_noatime(const struct file *file)
1054 const struct vfsmount *mnt = file->f_path.mnt;
1055 const struct inode *inode = file_inode(file);
1057 /* Adapted from file_accessed() and touch_atime().*/
1058 if (file->f_flags & O_NOATIME)
1061 if (inode->i_flags & S_NOATIME)
1064 if (IS_NOATIME(inode))
1067 if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
1070 if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
1073 if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
1079 void ll_io_init(struct cl_io *io, const struct file *file, int write)
1081 struct inode *inode = file_inode(file);
1083 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
1085 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
1086 io->u.ci_wr.wr_sync = file->f_flags & O_SYNC ||
1087 file->f_flags & O_DIRECT ||
1090 io->ci_obj = ll_i2info(inode)->lli_clob;
1091 io->ci_lockreq = CILR_MAYBE;
1092 if (ll_file_nolock(file)) {
1093 io->ci_lockreq = CILR_NEVER;
1094 io->ci_no_srvlock = 1;
1095 } else if (file->f_flags & O_APPEND) {
1096 io->ci_lockreq = CILR_MANDATORY;
1099 io->ci_noatime = file_is_noatime(file);
1103 ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
1104 struct file *file, enum cl_io_type iot,
1105 loff_t *ppos, size_t count)
1107 struct ll_inode_info *lli = ll_i2info(file_inode(file));
1108 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1113 io = ccc_env_thread_io(env);
1114 ll_io_init(io, file, iot == CIT_WRITE);
1116 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
1117 struct vvp_io *vio = vvp_env_io(env);
1118 struct ccc_io *cio = ccc_env_io(env);
1119 int write_mutex_locked = 0;
1121 cio->cui_fd = LUSTRE_FPRIVATE(file);
1122 vio->cui_io_subtype = args->via_io_subtype;
1124 switch (vio->cui_io_subtype) {
1126 cio->cui_iter = args->u.normal.via_iter;
1127 cio->cui_iocb = args->u.normal.via_iocb;
1128 if ((iot == CIT_WRITE) &&
1129 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1130 if (mutex_lock_interruptible(&lli->
1132 result = -ERESTARTSYS;
1135 write_mutex_locked = 1;
1136 } else if (iot == CIT_READ) {
1137 down_read(&lli->lli_trunc_sem);
1141 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
1142 vio->u.splice.cui_flags = args->u.splice.via_flags;
1145 CERROR("Unknown IO type - %u\n", vio->cui_io_subtype);
1148 result = cl_io_loop(env, io);
1149 if (write_mutex_locked)
1150 mutex_unlock(&lli->lli_write_mutex);
1151 else if (args->via_io_subtype == IO_NORMAL && iot == CIT_READ)
1152 up_read(&lli->lli_trunc_sem);
1154 /* cl_io_rw_init() handled IO */
1155 result = io->ci_result;
1158 if (io->ci_nob > 0) {
1159 result = io->ci_nob;
1160 *ppos = io->u.ci_wr.wr.crw_pos;
1164 cl_io_fini(env, io);
1165 /* If any bit been read/written (result != 0), we just return
1166 * short read/write instead of restart io. */
1167 if ((result == 0 || result == -ENODATA) && io->ci_need_restart) {
1168 CDEBUG(D_VFSTRACE, "Restart %s on %pD from %lld, count:%zd\n",
1169 iot == CIT_READ ? "read" : "write",
1170 file, *ppos, count);
1171 LASSERTF(io->ci_nob == 0, "%zd", io->ci_nob);
1175 if (iot == CIT_READ) {
1177 ll_stats_ops_tally(ll_i2sbi(file_inode(file)),
1178 LPROC_LL_READ_BYTES, result);
1179 } else if (iot == CIT_WRITE) {
1181 ll_stats_ops_tally(ll_i2sbi(file_inode(file)),
1182 LPROC_LL_WRITE_BYTES, result);
1183 fd->fd_write_failed = false;
1184 } else if (result != -ERESTARTSYS) {
1185 fd->fd_write_failed = true;
1192 static ssize_t ll_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
1195 struct vvp_io_args *args;
1199 env = cl_env_get(&refcheck);
1201 return PTR_ERR(env);
1203 args = vvp_env_args(env, IO_NORMAL);
1204 args->u.normal.via_iter = to;
1205 args->u.normal.via_iocb = iocb;
1207 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1208 &iocb->ki_pos, iov_iter_count(to));
1209 cl_env_put(env, &refcheck);
1214 * Write to a file (through the page cache).
1216 static ssize_t ll_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
1219 struct vvp_io_args *args;
1223 env = cl_env_get(&refcheck);
1225 return PTR_ERR(env);
1227 args = vvp_env_args(env, IO_NORMAL);
1228 args->u.normal.via_iter = from;
1229 args->u.normal.via_iocb = iocb;
1231 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1232 &iocb->ki_pos, iov_iter_count(from));
1233 cl_env_put(env, &refcheck);
1238 * Send file content (through pagecache) somewhere with helper
1240 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1241 struct pipe_inode_info *pipe, size_t count,
1245 struct vvp_io_args *args;
1249 env = cl_env_get(&refcheck);
1251 return PTR_ERR(env);
1253 args = vvp_env_args(env, IO_SPLICE);
1254 args->u.splice.via_pipe = pipe;
1255 args->u.splice.via_flags = flags;
1257 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1258 cl_env_put(env, &refcheck);
1262 static int ll_lov_recreate(struct inode *inode, struct ost_id *oi, u32 ost_idx)
1264 struct obd_export *exp = ll_i2dtexp(inode);
1265 struct obd_trans_info oti = { 0 };
1266 struct obdo *oa = NULL;
1269 struct lov_stripe_md *lsm = NULL, *lsm2;
1275 lsm = ccc_inode_lsm_get(inode);
1276 if (!lsm_has_objects(lsm)) {
1281 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1282 (lsm->lsm_stripe_count));
1284 OBD_ALLOC_LARGE(lsm2, lsm_size);
1291 oa->o_nlink = ost_idx;
1292 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1293 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1294 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1295 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1296 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
1297 memcpy(lsm2, lsm, lsm_size);
1298 ll_inode_size_lock(inode);
1299 rc = obd_create(NULL, exp, oa, &lsm2, &oti);
1300 ll_inode_size_unlock(inode);
1302 OBD_FREE_LARGE(lsm2, lsm_size);
1305 ccc_inode_lsm_put(inode, lsm);
1310 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1312 struct ll_recreate_obj ucreat;
1315 if (!capable(CFS_CAP_SYS_ADMIN))
1318 if (copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1322 ostid_set_seq_mdt0(&oi);
1323 ostid_set_id(&oi, ucreat.lrc_id);
1324 return ll_lov_recreate(inode, &oi, ucreat.lrc_ost_idx);
1327 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1333 if (!capable(CFS_CAP_SYS_ADMIN))
1336 if (copy_from_user(&fid, (struct lu_fid *)arg, sizeof(fid)))
1339 fid_to_ostid(&fid, &oi);
1340 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1341 return ll_lov_recreate(inode, &oi, ost_idx);
1344 int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
1345 int flags, struct lov_user_md *lum, int lum_size)
1347 struct lov_stripe_md *lsm = NULL;
1348 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1351 lsm = ccc_inode_lsm_get(inode);
1353 ccc_inode_lsm_put(inode, lsm);
1354 CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
1360 ll_inode_size_lock(inode);
1361 rc = ll_intent_file_open(dentry, lum, lum_size, &oit);
1364 rc = oit.d.lustre.it_status;
1368 ll_release_openhandle(inode, &oit);
1371 ll_inode_size_unlock(inode);
1372 ll_intent_release(&oit);
1373 ccc_inode_lsm_put(inode, lsm);
1377 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1381 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1382 struct lov_mds_md **lmmp, int *lmm_size,
1383 struct ptlrpc_request **request)
1385 struct ll_sb_info *sbi = ll_i2sbi(inode);
1386 struct mdt_body *body;
1387 struct lov_mds_md *lmm = NULL;
1388 struct ptlrpc_request *req = NULL;
1389 struct md_op_data *op_data;
1392 rc = ll_get_default_mdsize(sbi, &lmmsize);
1396 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1397 strlen(filename), lmmsize,
1398 LUSTRE_OPC_ANY, NULL);
1399 if (IS_ERR(op_data))
1400 return PTR_ERR(op_data);
1402 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1403 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1404 ll_finish_md_op_data(op_data);
1406 CDEBUG(D_INFO, "md_getattr_name failed on %s: rc %d\n",
1411 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1412 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1414 lmmsize = body->eadatasize;
1416 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1422 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1423 LASSERT(lmm != NULL);
1425 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1426 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1432 * This is coming from the MDS, so is probably in
1433 * little endian. We convert it to host endian before
1434 * passing it to userspace.
1436 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1439 stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1440 if (le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
1443 /* if function called for directory - we should
1444 * avoid swab not existent lsm objects */
1445 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1446 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1447 if (S_ISREG(body->mode))
1448 lustre_swab_lov_user_md_objects(
1449 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1451 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1452 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1453 if (S_ISREG(body->mode))
1454 lustre_swab_lov_user_md_objects(
1455 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1462 *lmm_size = lmmsize;
1467 static int ll_lov_setea(struct inode *inode, struct file *file,
1470 int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1471 struct lov_user_md *lump;
1472 int lum_size = sizeof(struct lov_user_md) +
1473 sizeof(struct lov_user_ost_data);
1476 if (!capable(CFS_CAP_SYS_ADMIN))
1479 OBD_ALLOC_LARGE(lump, lum_size);
1483 if (copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1484 OBD_FREE_LARGE(lump, lum_size);
1488 rc = ll_lov_setstripe_ea_info(inode, file->f_path.dentry, flags, lump,
1490 cl_lov_delay_create_clear(&file->f_flags);
1492 OBD_FREE_LARGE(lump, lum_size);
1496 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1499 struct lov_user_md_v3 lumv3;
1500 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1501 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1502 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1504 int flags = FMODE_WRITE;
1506 /* first try with v1 which is smaller than v3 */
1507 lum_size = sizeof(struct lov_user_md_v1);
1508 if (copy_from_user(lumv1, lumv1p, lum_size))
1511 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1512 lum_size = sizeof(struct lov_user_md_v3);
1513 if (copy_from_user(&lumv3, lumv3p, lum_size))
1517 rc = ll_lov_setstripe_ea_info(inode, file->f_path.dentry, flags, lumv1,
1519 cl_lov_delay_create_clear(&file->f_flags);
1521 struct lov_stripe_md *lsm;
1524 put_user(0, &lumv1p->lmm_stripe_count);
1526 ll_layout_refresh(inode, &gen);
1527 lsm = ccc_inode_lsm_get(inode);
1528 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1529 0, lsm, (void *)arg);
1530 ccc_inode_lsm_put(inode, lsm);
1535 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1537 struct lov_stripe_md *lsm;
1540 lsm = ccc_inode_lsm_get(inode);
1542 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
1544 ccc_inode_lsm_put(inode, lsm);
1549 ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1551 struct ll_inode_info *lli = ll_i2info(inode);
1552 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1553 struct ccc_grouplock grouplock;
1557 CWARN("group id for group lock must not be 0\n");
1561 if (ll_file_nolock(file))
1564 spin_lock(&lli->lli_lock);
1565 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1566 CWARN("group lock already existed with gid %lu\n",
1567 fd->fd_grouplock.cg_gid);
1568 spin_unlock(&lli->lli_lock);
1571 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1572 spin_unlock(&lli->lli_lock);
1574 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1575 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1579 spin_lock(&lli->lli_lock);
1580 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1581 spin_unlock(&lli->lli_lock);
1582 CERROR("another thread just won the race\n");
1583 cl_put_grouplock(&grouplock);
1587 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1588 fd->fd_grouplock = grouplock;
1589 spin_unlock(&lli->lli_lock);
1591 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1595 static int ll_put_grouplock(struct inode *inode, struct file *file,
1598 struct ll_inode_info *lli = ll_i2info(inode);
1599 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1600 struct ccc_grouplock grouplock;
1602 spin_lock(&lli->lli_lock);
1603 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1604 spin_unlock(&lli->lli_lock);
1605 CWARN("no group lock held\n");
1608 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1610 if (fd->fd_grouplock.cg_gid != arg) {
1611 CWARN("group lock %lu doesn't match current id %lu\n",
1612 arg, fd->fd_grouplock.cg_gid);
1613 spin_unlock(&lli->lli_lock);
1617 grouplock = fd->fd_grouplock;
1618 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1619 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1620 spin_unlock(&lli->lli_lock);
1622 cl_put_grouplock(&grouplock);
1623 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1628 * Close inode open handle
1630 * \param inode [in] inode in question
1631 * \param it [in,out] intent which contains open info and result
1634 * \retval <0 failure
1636 int ll_release_openhandle(struct inode *inode, struct lookup_intent *it)
1638 struct obd_client_handle *och;
1643 /* Root ? Do nothing. */
1644 if (is_root_inode(inode))
1647 /* No open handle to close? Move away */
1648 if (!it_disposition(it, DISP_OPEN_OPEN))
1651 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1653 och = kzalloc(sizeof(*och), GFP_NOFS);
1659 ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
1661 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1664 /* this one is in place of ll_file_open */
1665 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
1666 ptlrpc_req_finished(it->d.lustre.it_data);
1667 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1673 * Get size for inode for which FIEMAP mapping is requested.
1674 * Make the FIEMAP get_info call and returns the result.
1676 static int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1679 struct obd_export *exp = ll_i2dtexp(inode);
1680 struct lov_stripe_md *lsm = NULL;
1681 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1682 __u32 vallen = num_bytes;
1685 /* Checks for fiemap flags */
1686 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1687 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1691 /* Check for FIEMAP_FLAG_SYNC */
1692 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1693 rc = filemap_fdatawrite(inode->i_mapping);
1698 lsm = ccc_inode_lsm_get(inode);
1702 /* If the stripe_count > 1 and the application does not understand
1703 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1705 if (lsm->lsm_stripe_count > 1 &&
1706 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER)) {
1711 fm_key.oa.o_oi = lsm->lsm_oi;
1712 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1714 obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
1715 obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
1716 /* If filesize is 0, then there would be no objects for mapping */
1717 if (fm_key.oa.o_size == 0) {
1718 fiemap->fm_mapped_extents = 0;
1723 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1725 rc = obd_get_info(NULL, exp, sizeof(fm_key), &fm_key, &vallen,
1728 CERROR("obd_get_info failed: rc = %d\n", rc);
1731 ccc_inode_lsm_put(inode, lsm);
1735 int ll_fid2path(struct inode *inode, void __user *arg)
1737 struct obd_export *exp = ll_i2mdexp(inode);
1738 const struct getinfo_fid2path __user *gfin = arg;
1739 struct getinfo_fid2path *gfout;
1744 if (!capable(CFS_CAP_DAC_READ_SEARCH) &&
1745 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
1748 /* Only need to get the buflen */
1749 if (get_user(pathlen, &gfin->gf_pathlen))
1752 if (pathlen > PATH_MAX)
1755 outsize = sizeof(*gfout) + pathlen;
1757 gfout = kzalloc(outsize, GFP_NOFS);
1761 if (copy_from_user(gfout, arg, sizeof(*gfout))) {
1766 /* Call mdc_iocontrol */
1767 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1771 if (copy_to_user(arg, gfout, outsize))
1775 OBD_FREE(gfout, outsize);
1779 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1781 struct ll_user_fiemap *fiemap_s;
1782 size_t num_bytes, ret_bytes;
1783 unsigned int extent_count;
1786 /* Get the extent count so we can calculate the size of
1787 * required fiemap buffer */
1788 if (get_user(extent_count,
1789 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1793 (SIZE_MAX - sizeof(*fiemap_s)) / sizeof(struct ll_fiemap_extent))
1795 num_bytes = sizeof(*fiemap_s) + (extent_count *
1796 sizeof(struct ll_fiemap_extent));
1798 OBD_ALLOC_LARGE(fiemap_s, num_bytes);
1799 if (fiemap_s == NULL)
1802 /* get the fiemap value */
1803 if (copy_from_user(fiemap_s, (struct ll_user_fiemap __user *)arg,
1804 sizeof(*fiemap_s))) {
1809 /* If fm_extent_count is non-zero, read the first extent since
1810 * it is used to calculate end_offset and device from previous
1813 if (copy_from_user(&fiemap_s->fm_extents[0],
1814 (char __user *)arg + sizeof(*fiemap_s),
1815 sizeof(struct ll_fiemap_extent))) {
1821 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1825 ret_bytes = sizeof(struct ll_user_fiemap);
1827 if (extent_count != 0)
1828 ret_bytes += (fiemap_s->fm_mapped_extents *
1829 sizeof(struct ll_fiemap_extent));
1831 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1835 OBD_FREE_LARGE(fiemap_s, num_bytes);
1840 * Read the data_version for inode.
1842 * This value is computed using stripe object version on OST.
1843 * Version is computed using server side locking.
1845 * @param extent_lock Take extent lock. Not needed if a process is already
1846 * holding the OST object group locks.
1848 int ll_data_version(struct inode *inode, __u64 *data_version,
1851 struct lov_stripe_md *lsm = NULL;
1852 struct ll_sb_info *sbi = ll_i2sbi(inode);
1853 struct obdo *obdo = NULL;
1856 /* If no stripe, we consider version is 0. */
1857 lsm = ccc_inode_lsm_get(inode);
1858 if (!lsm_has_objects(lsm)) {
1860 CDEBUG(D_INODE, "No object for inode\n");
1865 obdo = kzalloc(sizeof(*obdo), GFP_NOFS);
1871 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
1873 if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
1876 *data_version = obdo->o_data_version;
1881 ccc_inode_lsm_put(inode, lsm);
1886 * Trigger a HSM release request for the provided inode.
1888 int ll_hsm_release(struct inode *inode)
1890 struct cl_env_nest nest;
1892 struct obd_client_handle *och = NULL;
1893 __u64 data_version = 0;
1897 CDEBUG(D_INODE, "%s: Releasing file "DFID".\n",
1898 ll_get_fsname(inode->i_sb, NULL, 0),
1899 PFID(&ll_i2info(inode)->lli_fid));
1901 och = ll_lease_open(inode, NULL, FMODE_WRITE, MDS_OPEN_RELEASE);
1907 /* Grab latest data_version and [am]time values */
1908 rc = ll_data_version(inode, &data_version, 1);
1912 env = cl_env_nested_get(&nest);
1918 ll_merge_lvb(env, inode);
1919 cl_env_nested_put(&nest, env);
1921 /* Release the file.
1922 * NB: lease lock handle is released in mdc_hsm_release_pack() because
1923 * we still need it to pack l_remote_handle to MDT. */
1924 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp, inode, och,
1930 if (och != NULL && !IS_ERR(och)) /* close the file */
1931 ll_lease_close(och, inode, NULL);
1936 struct ll_swap_stack {
1937 struct iattr ia1, ia2;
1939 struct inode *inode1, *inode2;
1940 bool check_dv1, check_dv2;
1943 static int ll_swap_layouts(struct file *file1, struct file *file2,
1944 struct lustre_swap_layouts *lsl)
1946 struct mdc_swap_layouts msl;
1947 struct md_op_data *op_data;
1950 struct ll_swap_stack *llss = NULL;
1953 llss = kzalloc(sizeof(*llss), GFP_NOFS);
1957 llss->inode1 = file_inode(file1);
1958 llss->inode2 = file_inode(file2);
1960 if (!S_ISREG(llss->inode2->i_mode)) {
1965 if (inode_permission(llss->inode1, MAY_WRITE) ||
1966 inode_permission(llss->inode2, MAY_WRITE)) {
1971 if (llss->inode2->i_sb != llss->inode1->i_sb) {
1976 /* we use 2 bool because it is easier to swap than 2 bits */
1977 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV1)
1978 llss->check_dv1 = true;
1980 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV2)
1981 llss->check_dv2 = true;
1983 /* we cannot use lsl->sl_dvX directly because we may swap them */
1984 llss->dv1 = lsl->sl_dv1;
1985 llss->dv2 = lsl->sl_dv2;
1987 rc = lu_fid_cmp(ll_inode2fid(llss->inode1), ll_inode2fid(llss->inode2));
1988 if (rc == 0) /* same file, done! */ {
1993 if (rc < 0) { /* sequentialize it */
1994 swap(llss->inode1, llss->inode2);
1996 swap(llss->dv1, llss->dv2);
1997 swap(llss->check_dv1, llss->check_dv2);
2001 if (gid != 0) { /* application asks to flush dirty cache */
2002 rc = ll_get_grouplock(llss->inode1, file1, gid);
2006 rc = ll_get_grouplock(llss->inode2, file2, gid);
2008 ll_put_grouplock(llss->inode1, file1, gid);
2013 /* to be able to restore mtime and atime after swap
2014 * we need to first save them */
2016 (SWAP_LAYOUTS_KEEP_MTIME | SWAP_LAYOUTS_KEEP_ATIME)) {
2017 llss->ia1.ia_mtime = llss->inode1->i_mtime;
2018 llss->ia1.ia_atime = llss->inode1->i_atime;
2019 llss->ia1.ia_valid = ATTR_MTIME | ATTR_ATIME;
2020 llss->ia2.ia_mtime = llss->inode2->i_mtime;
2021 llss->ia2.ia_atime = llss->inode2->i_atime;
2022 llss->ia2.ia_valid = ATTR_MTIME | ATTR_ATIME;
2025 /* ultimate check, before swapping the layouts we check if
2026 * dataversion has changed (if requested) */
2027 if (llss->check_dv1) {
2028 rc = ll_data_version(llss->inode1, &dv, 0);
2031 if (dv != llss->dv1) {
2037 if (llss->check_dv2) {
2038 rc = ll_data_version(llss->inode2, &dv, 0);
2041 if (dv != llss->dv2) {
2047 /* struct md_op_data is used to send the swap args to the mdt
2048 * only flags is missing, so we use struct mdc_swap_layouts
2049 * through the md_op_data->op_data */
2050 /* flags from user space have to be converted before they are send to
2051 * server, no flag is sent today, they are only used on the client */
2054 op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0,
2055 0, LUSTRE_OPC_ANY, &msl);
2056 if (IS_ERR(op_data)) {
2057 rc = PTR_ERR(op_data);
2061 rc = obd_iocontrol(LL_IOC_LOV_SWAP_LAYOUTS, ll_i2mdexp(llss->inode1),
2062 sizeof(*op_data), op_data, NULL);
2063 ll_finish_md_op_data(op_data);
2067 ll_put_grouplock(llss->inode2, file2, gid);
2068 ll_put_grouplock(llss->inode1, file1, gid);
2071 /* rc can be set from obd_iocontrol() or from a GOTO(putgl, ...) */
2075 /* clear useless flags */
2076 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_MTIME)) {
2077 llss->ia1.ia_valid &= ~ATTR_MTIME;
2078 llss->ia2.ia_valid &= ~ATTR_MTIME;
2081 if (!(lsl->sl_flags & SWAP_LAYOUTS_KEEP_ATIME)) {
2082 llss->ia1.ia_valid &= ~ATTR_ATIME;
2083 llss->ia2.ia_valid &= ~ATTR_ATIME;
2086 /* update time if requested */
2088 if (llss->ia2.ia_valid != 0) {
2089 mutex_lock(&llss->inode1->i_mutex);
2090 rc = ll_setattr(file1->f_path.dentry, &llss->ia2);
2091 mutex_unlock(&llss->inode1->i_mutex);
2094 if (llss->ia1.ia_valid != 0) {
2097 mutex_lock(&llss->inode2->i_mutex);
2098 rc1 = ll_setattr(file2->f_path.dentry, &llss->ia1);
2099 mutex_unlock(&llss->inode2->i_mutex);
2111 static int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss)
2113 struct md_op_data *op_data;
2116 /* Non-root users are forbidden to set or clear flags which are
2117 * NOT defined in HSM_USER_MASK. */
2118 if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
2119 !capable(CFS_CAP_SYS_ADMIN))
2122 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2123 LUSTRE_OPC_ANY, hss);
2124 if (IS_ERR(op_data))
2125 return PTR_ERR(op_data);
2127 rc = obd_iocontrol(LL_IOC_HSM_STATE_SET, ll_i2mdexp(inode),
2128 sizeof(*op_data), op_data, NULL);
2130 ll_finish_md_op_data(op_data);
2135 static int ll_hsm_import(struct inode *inode, struct file *file,
2136 struct hsm_user_import *hui)
2138 struct hsm_state_set *hss = NULL;
2139 struct iattr *attr = NULL;
2143 if (!S_ISREG(inode->i_mode))
2147 hss = kzalloc(sizeof(*hss), GFP_NOFS);
2153 hss->hss_valid = HSS_SETMASK | HSS_ARCHIVE_ID;
2154 hss->hss_archive_id = hui->hui_archive_id;
2155 hss->hss_setmask = HS_ARCHIVED | HS_EXISTS | HS_RELEASED;
2156 rc = ll_hsm_state_set(inode, hss);
2160 attr = kzalloc(sizeof(*attr), GFP_NOFS);
2166 attr->ia_mode = hui->hui_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
2167 attr->ia_mode |= S_IFREG;
2168 attr->ia_uid = make_kuid(&init_user_ns, hui->hui_uid);
2169 attr->ia_gid = make_kgid(&init_user_ns, hui->hui_gid);
2170 attr->ia_size = hui->hui_size;
2171 attr->ia_mtime.tv_sec = hui->hui_mtime;
2172 attr->ia_mtime.tv_nsec = hui->hui_mtime_ns;
2173 attr->ia_atime.tv_sec = hui->hui_atime;
2174 attr->ia_atime.tv_nsec = hui->hui_atime_ns;
2176 attr->ia_valid = ATTR_SIZE | ATTR_MODE | ATTR_FORCE |
2177 ATTR_UID | ATTR_GID |
2178 ATTR_MTIME | ATTR_MTIME_SET |
2179 ATTR_ATIME | ATTR_ATIME_SET;
2181 mutex_lock(&inode->i_mutex);
2183 rc = ll_setattr_raw(file->f_path.dentry, attr, true);
2187 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 = dentry->d_inode;
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 (!dentry->d_inode->i_nlink)
2945 d_lustre_invalidate(dentry, 0);
2947 ll_lookup_finish_locks(&oit, inode);
2948 } else if (!ll_have_md_lock(dentry->d_inode, &ibits, LCK_MINMODE)) {
2949 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
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 = dentry->d_inode;
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 = de->d_inode;
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 = new_sync_read,
3132 .read_iter = ll_file_read_iter,
3133 .write = new_sync_write,
3134 .write_iter = ll_file_write_iter,
3135 .unlocked_ioctl = ll_file_ioctl,
3136 .open = ll_file_open,
3137 .release = ll_file_release,
3138 .mmap = ll_file_mmap,
3139 .llseek = ll_file_seek,
3140 .splice_read = ll_file_splice_read,
3145 struct file_operations ll_file_operations_flock = {
3146 .read = new_sync_read,
3147 .read_iter = ll_file_read_iter,
3148 .write = new_sync_write,
3149 .write_iter = ll_file_write_iter,
3150 .unlocked_ioctl = ll_file_ioctl,
3151 .open = ll_file_open,
3152 .release = ll_file_release,
3153 .mmap = ll_file_mmap,
3154 .llseek = ll_file_seek,
3155 .splice_read = ll_file_splice_read,
3158 .flock = ll_file_flock,
3159 .lock = ll_file_flock
3162 /* These are for -o noflock - to return ENOSYS on flock calls */
3163 struct file_operations ll_file_operations_noflock = {
3164 .read = new_sync_read,
3165 .read_iter = ll_file_read_iter,
3166 .write = new_sync_write,
3167 .write_iter = ll_file_write_iter,
3168 .unlocked_ioctl = ll_file_ioctl,
3169 .open = ll_file_open,
3170 .release = ll_file_release,
3171 .mmap = ll_file_mmap,
3172 .llseek = ll_file_seek,
3173 .splice_read = ll_file_splice_read,
3176 .flock = ll_file_noflock,
3177 .lock = ll_file_noflock
3180 struct inode_operations ll_file_inode_operations = {
3181 .setattr = ll_setattr,
3182 .getattr = ll_getattr,
3183 .permission = ll_inode_permission,
3184 .setxattr = ll_setxattr,
3185 .getxattr = ll_getxattr,
3186 .listxattr = ll_listxattr,
3187 .removexattr = ll_removexattr,
3188 .fiemap = ll_fiemap,
3189 .get_acl = ll_get_acl,
3192 /* dynamic ioctl number support routines */
3193 static struct llioc_ctl_data {
3194 struct rw_semaphore ioc_sem;
3195 struct list_head ioc_head;
3197 __RWSEM_INITIALIZER(llioc.ioc_sem),
3198 LIST_HEAD_INIT(llioc.ioc_head)
3203 struct list_head iocd_list;
3204 unsigned int iocd_size;
3205 llioc_callback_t iocd_cb;
3206 unsigned int iocd_count;
3207 unsigned int iocd_cmd[0];
3210 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
3213 struct llioc_data *in_data = NULL;
3215 if (cb == NULL || cmd == NULL ||
3216 count > LLIOC_MAX_CMD || count < 0)
3219 size = sizeof(*in_data) + count * sizeof(unsigned int);
3220 in_data = kzalloc(size, GFP_NOFS);
3224 memset(in_data, 0, sizeof(*in_data));
3225 in_data->iocd_size = size;
3226 in_data->iocd_cb = cb;
3227 in_data->iocd_count = count;
3228 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
3230 down_write(&llioc.ioc_sem);
3231 list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
3232 up_write(&llioc.ioc_sem);
3237 void ll_iocontrol_unregister(void *magic)
3239 struct llioc_data *tmp;
3244 down_write(&llioc.ioc_sem);
3245 list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
3247 unsigned int size = tmp->iocd_size;
3249 list_del(&tmp->iocd_list);
3250 up_write(&llioc.ioc_sem);
3252 OBD_FREE(tmp, size);
3256 up_write(&llioc.ioc_sem);
3258 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
3261 EXPORT_SYMBOL(ll_iocontrol_register);
3262 EXPORT_SYMBOL(ll_iocontrol_unregister);
3264 static enum llioc_iter
3265 ll_iocontrol_call(struct inode *inode, struct file *file,
3266 unsigned int cmd, unsigned long arg, int *rcp)
3268 enum llioc_iter ret = LLIOC_CONT;
3269 struct llioc_data *data;
3270 int rc = -EINVAL, i;
3272 down_read(&llioc.ioc_sem);
3273 list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
3274 for (i = 0; i < data->iocd_count; i++) {
3275 if (cmd != data->iocd_cmd[i])
3278 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
3282 if (ret == LLIOC_STOP)
3285 up_read(&llioc.ioc_sem);
3292 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
3294 struct ll_inode_info *lli = ll_i2info(inode);
3295 struct cl_env_nest nest;
3299 if (lli->lli_clob == NULL)
3302 env = cl_env_nested_get(&nest);
3304 return PTR_ERR(env);
3306 result = cl_conf_set(env, lli->lli_clob, conf);
3307 cl_env_nested_put(&nest, env);
3309 if (conf->coc_opc == OBJECT_CONF_SET) {
3310 struct ldlm_lock *lock = conf->coc_lock;
3312 LASSERT(lock != NULL);
3313 LASSERT(ldlm_has_layout(lock));
3315 /* it can only be allowed to match after layout is
3316 * applied to inode otherwise false layout would be
3317 * seen. Applying layout should happen before dropping
3318 * the intent lock. */
3319 ldlm_lock_allow_match(lock);
3325 /* Fetch layout from MDT with getxattr request, if it's not ready yet */
3326 static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
3329 struct ll_sb_info *sbi = ll_i2sbi(inode);
3330 struct obd_capa *oc;
3331 struct ptlrpc_request *req;
3332 struct mdt_body *body;
3338 CDEBUG(D_INODE, DFID" LVB_READY=%d l_lvb_data=%p l_lvb_len=%d\n",
3339 PFID(ll_inode2fid(inode)), !!(lock->l_flags & LDLM_FL_LVB_READY),
3340 lock->l_lvb_data, lock->l_lvb_len);
3342 if ((lock->l_lvb_data != NULL) && (lock->l_flags & LDLM_FL_LVB_READY))
3345 /* if layout lock was granted right away, the layout is returned
3346 * within DLM_LVB of dlm reply; otherwise if the lock was ever
3347 * blocked and then granted via completion ast, we have to fetch
3348 * layout here. Please note that we can't use the LVB buffer in
3349 * completion AST because it doesn't have a large enough buffer */
3350 oc = ll_mdscapa_get(inode);
3351 rc = ll_get_default_mdsize(sbi, &lmmsize);
3353 rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
3354 OBD_MD_FLXATTR, XATTR_NAME_LOV, NULL, 0,
3360 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
3366 lmmsize = body->eadatasize;
3367 if (lmmsize == 0) /* empty layout */ {
3372 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, lmmsize);
3378 OBD_ALLOC_LARGE(lvbdata, lmmsize);
3379 if (lvbdata == NULL) {
3384 memcpy(lvbdata, lmm, lmmsize);
3385 lock_res_and_lock(lock);
3386 if (lock->l_lvb_data != NULL)
3387 OBD_FREE_LARGE(lock->l_lvb_data, lock->l_lvb_len);
3389 lock->l_lvb_data = lvbdata;
3390 lock->l_lvb_len = lmmsize;
3391 unlock_res_and_lock(lock);
3394 ptlrpc_req_finished(req);
3399 * Apply the layout to the inode. Layout lock is held and will be released
3402 static int ll_layout_lock_set(struct lustre_handle *lockh, ldlm_mode_t mode,
3403 struct inode *inode, __u32 *gen, bool reconf)
3405 struct ll_inode_info *lli = ll_i2info(inode);
3406 struct ll_sb_info *sbi = ll_i2sbi(inode);
3407 struct ldlm_lock *lock;
3408 struct lustre_md md = { NULL };
3409 struct cl_object_conf conf;
3412 bool wait_layout = false;
3414 LASSERT(lustre_handle_is_used(lockh));
3416 lock = ldlm_handle2lock(lockh);
3417 LASSERT(lock != NULL);
3418 LASSERT(ldlm_has_layout(lock));
3420 LDLM_DEBUG(lock, "File %p/"DFID" being reconfigured: %d.\n",
3421 inode, PFID(&lli->lli_fid), reconf);
3423 /* in case this is a caching lock and reinstate with new inode */
3424 md_set_lock_data(sbi->ll_md_exp, &lockh->cookie, inode, NULL);
3426 lock_res_and_lock(lock);
3427 lvb_ready = !!(lock->l_flags & LDLM_FL_LVB_READY);
3428 unlock_res_and_lock(lock);
3429 /* checking lvb_ready is racy but this is okay. The worst case is
3430 * that multi processes may configure the file on the same time. */
3431 if (lvb_ready || !reconf) {
3434 /* layout_gen must be valid if layout lock is not
3435 * cancelled and stripe has already set */
3436 *gen = ll_layout_version_get(lli);
3442 rc = ll_layout_fetch(inode, lock);
3446 /* for layout lock, lmm is returned in lock's lvb.
3447 * lvb_data is immutable if the lock is held so it's safe to access it
3448 * without res lock. See the description in ldlm_lock_decref_internal()
3449 * for the condition to free lvb_data of layout lock */
3450 if (lock->l_lvb_data != NULL) {
3451 rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm,
3452 lock->l_lvb_data, lock->l_lvb_len);
3454 *gen = LL_LAYOUT_GEN_EMPTY;
3456 *gen = md.lsm->lsm_layout_gen;
3459 CERROR("%s: file "DFID" unpackmd error: %d\n",
3460 ll_get_fsname(inode->i_sb, NULL, 0),
3461 PFID(&lli->lli_fid), rc);
3467 /* set layout to file. Unlikely this will fail as old layout was
3468 * surely eliminated */
3469 memset(&conf, 0, sizeof(conf));
3470 conf.coc_opc = OBJECT_CONF_SET;
3471 conf.coc_inode = inode;
3472 conf.coc_lock = lock;
3473 conf.u.coc_md = &md;
3474 rc = ll_layout_conf(inode, &conf);
3477 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
3479 /* refresh layout failed, need to wait */
3480 wait_layout = rc == -EBUSY;
3483 LDLM_LOCK_PUT(lock);
3484 ldlm_lock_decref(lockh, mode);
3486 /* wait for IO to complete if it's still being used. */
3488 CDEBUG(D_INODE, "%s: %p/"DFID" wait for layout reconf.\n",
3489 ll_get_fsname(inode->i_sb, NULL, 0),
3490 inode, PFID(&lli->lli_fid));
3492 memset(&conf, 0, sizeof(conf));
3493 conf.coc_opc = OBJECT_CONF_WAIT;
3494 conf.coc_inode = inode;
3495 rc = ll_layout_conf(inode, &conf);
3499 CDEBUG(D_INODE, "file: "DFID" waiting layout return: %d.\n",
3500 PFID(&lli->lli_fid), rc);
3506 * This function checks if there exists a LAYOUT lock on the client side,
3507 * or enqueues it if it doesn't have one in cache.
3509 * This function will not hold layout lock so it may be revoked any time after
3510 * this function returns. Any operations depend on layout should be redone
3513 * This function should be called before lov_io_init() to get an uptodate
3514 * layout version, the caller should save the version number and after IO
3515 * is finished, this function should be called again to verify that layout
3516 * is not changed during IO time.
3518 int ll_layout_refresh(struct inode *inode, __u32 *gen)
3520 struct ll_inode_info *lli = ll_i2info(inode);
3521 struct ll_sb_info *sbi = ll_i2sbi(inode);
3522 struct md_op_data *op_data;
3523 struct lookup_intent it;
3524 struct lustre_handle lockh;
3526 struct ldlm_enqueue_info einfo = {
3527 .ei_type = LDLM_IBITS,
3529 .ei_cb_bl = ll_md_blocking_ast,
3530 .ei_cb_cp = ldlm_completion_ast,
3534 *gen = ll_layout_version_get(lli);
3535 if (!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK) || *gen != LL_LAYOUT_GEN_NONE)
3539 LASSERT(fid_is_sane(ll_inode2fid(inode)));
3540 LASSERT(S_ISREG(inode->i_mode));
3542 /* take layout lock mutex to enqueue layout lock exclusively. */
3543 mutex_lock(&lli->lli_layout_mutex);
3546 /* mostly layout lock is caching on the local side, so try to match
3547 * it before grabbing layout lock mutex. */
3548 mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0,
3549 LCK_CR | LCK_CW | LCK_PR | LCK_PW);
3550 if (mode != 0) { /* hit cached lock */
3551 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
3555 mutex_unlock(&lli->lli_layout_mutex);
3559 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
3560 0, 0, LUSTRE_OPC_ANY, NULL);
3561 if (IS_ERR(op_data)) {
3562 mutex_unlock(&lli->lli_layout_mutex);
3563 return PTR_ERR(op_data);
3566 /* have to enqueue one */
3567 memset(&it, 0, sizeof(it));
3568 it.it_op = IT_LAYOUT;
3569 lockh.cookie = 0ULL;
3571 LDLM_DEBUG_NOLOCK("%s: requeue layout lock for file %p/"DFID".\n",
3572 ll_get_fsname(inode->i_sb, NULL, 0), inode,
3573 PFID(&lli->lli_fid));
3575 rc = md_enqueue(sbi->ll_md_exp, &einfo, &it, op_data, &lockh,
3577 if (it.d.lustre.it_data != NULL)
3578 ptlrpc_req_finished(it.d.lustre.it_data);
3579 it.d.lustre.it_data = NULL;
3581 ll_finish_md_op_data(op_data);
3583 mode = it.d.lustre.it_lock_mode;
3584 it.d.lustre.it_lock_mode = 0;
3585 ll_intent_drop_lock(&it);
3588 /* set lock data in case this is a new lock */
3589 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
3590 rc = ll_layout_lock_set(&lockh, mode, inode, gen, true);
3594 mutex_unlock(&lli->lli_layout_mutex);
3600 * This function send a restore request to the MDT
3602 int ll_layout_restore(struct inode *inode)
3604 struct hsm_user_request *hur;
3607 len = sizeof(struct hsm_user_request) +
3608 sizeof(struct hsm_user_item);
3609 hur = kzalloc(len, GFP_NOFS);
3613 hur->hur_request.hr_action = HUA_RESTORE;
3614 hur->hur_request.hr_archive_id = 0;
3615 hur->hur_request.hr_flags = 0;
3616 memcpy(&hur->hur_user_item[0].hui_fid, &ll_i2info(inode)->lli_fid,
3617 sizeof(hur->hur_user_item[0].hui_fid));
3618 hur->hur_user_item[0].hui_extent.length = -1;
3619 hur->hur_request.hr_itemcount = 1;
3620 rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp,