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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 * Author: Peter Braam <braam@clusterfs.com>
35 * Author: Phil Schwan <phil@clusterfs.com>
36 * Author: Andreas Dilger <adilger@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_LLITE
40 #include <lustre_dlm.h>
41 #include <linux/pagemap.h>
42 #include <linux/file.h>
43 #include <linux/sched.h>
44 #include <linux/user_namespace.h>
45 #ifdef HAVE_UIDGID_HEADER
46 # include <linux/uidgid.h>
49 #include <uapi/linux/lustre/lustre_ioctl.h>
50 #include <lustre_swab.h>
52 #include "cl_object.h"
53 #include "llite_internal.h"
54 #include "vvp_internal.h"
57 struct inode *sp_inode;
62 ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg);
64 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
67 static struct ll_file_data *ll_file_data_get(void)
69 struct ll_file_data *fd;
71 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, GFP_NOFS);
75 fd->fd_write_failed = false;
80 static void ll_file_data_put(struct ll_file_data *fd)
83 OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
87 * Packs all the attributes into @op_data for the CLOSE rpc.
89 static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
90 struct obd_client_handle *och)
94 ll_prep_md_op_data(op_data, inode, NULL, NULL,
95 0, 0, LUSTRE_OPC_ANY, NULL);
97 op_data->op_attr.ia_mode = inode->i_mode;
98 op_data->op_attr.ia_atime = inode->i_atime;
99 op_data->op_attr.ia_mtime = inode->i_mtime;
100 op_data->op_attr.ia_ctime = inode->i_ctime;
101 op_data->op_attr.ia_size = i_size_read(inode);
102 op_data->op_attr.ia_valid |= (ATTR_MODE | ATTR_ATIME | ATTR_ATIME_SET |
103 ATTR_MTIME | ATTR_MTIME_SET |
105 op_data->op_xvalid |= OP_XVALID_CTIME_SET;
106 op_data->op_attr_blocks = inode->i_blocks;
107 op_data->op_attr_flags = ll_inode_to_ext_flags(inode->i_flags);
108 if (ll_file_test_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT))
109 op_data->op_attr_flags |= LUSTRE_PROJINHERIT_FL;
110 op_data->op_open_handle = och->och_open_handle;
112 if (och->och_flags & FMODE_WRITE &&
113 ll_file_test_and_clear_flag(ll_i2info(inode), LLIF_DATA_MODIFIED))
114 /* For HSM: if inode data has been modified, pack it so that
115 * MDT can set data dirty flag in the archive. */
116 op_data->op_bias |= MDS_DATA_MODIFIED;
122 * Perform a close, possibly with a bias.
123 * The meaning of "data" depends on the value of "bias".
125 * If \a bias is MDS_HSM_RELEASE then \a data is a pointer to the data version.
126 * If \a bias is MDS_CLOSE_LAYOUT_SWAP then \a data is a pointer to the inode to
129 static int ll_close_inode_openhandle(struct inode *inode,
130 struct obd_client_handle *och,
131 enum mds_op_bias bias, void *data)
133 struct obd_export *md_exp = ll_i2mdexp(inode);
134 const struct ll_inode_info *lli = ll_i2info(inode);
135 struct md_op_data *op_data;
136 struct ptlrpc_request *req = NULL;
140 if (class_exp2obd(md_exp) == NULL) {
141 CERROR("%s: invalid MDC connection handle closing "DFID"\n",
142 ll_i2sbi(inode)->ll_fsname, PFID(&lli->lli_fid));
146 OBD_ALLOC_PTR(op_data);
147 /* We leak openhandle and request here on error, but not much to be
148 * done in OOM case since app won't retry close on error either. */
150 GOTO(out, rc = -ENOMEM);
152 ll_prepare_close(inode, op_data, och);
154 case MDS_CLOSE_LAYOUT_MERGE:
155 /* merge blocks from the victim inode */
156 op_data->op_attr_blocks += ((struct inode *)data)->i_blocks;
157 op_data->op_attr.ia_valid |= ATTR_SIZE;
158 op_data->op_xvalid |= OP_XVALID_BLOCKS;
159 case MDS_CLOSE_LAYOUT_SPLIT:
160 case MDS_CLOSE_LAYOUT_SWAP: {
161 struct split_param *sp = data;
163 LASSERT(data != NULL);
164 op_data->op_bias |= bias;
165 op_data->op_data_version = 0;
166 op_data->op_lease_handle = och->och_lease_handle;
167 if (bias == MDS_CLOSE_LAYOUT_SPLIT) {
168 op_data->op_fid2 = *ll_inode2fid(sp->sp_inode);
169 op_data->op_mirror_id = sp->sp_mirror_id;
171 op_data->op_fid2 = *ll_inode2fid(data);
176 case MDS_CLOSE_RESYNC_DONE: {
177 struct ll_ioc_lease *ioc = data;
179 LASSERT(data != NULL);
180 op_data->op_attr_blocks +=
181 ioc->lil_count * op_data->op_attr_blocks;
182 op_data->op_attr.ia_valid |= ATTR_SIZE;
183 op_data->op_xvalid |= OP_XVALID_BLOCKS;
184 op_data->op_bias |= MDS_CLOSE_RESYNC_DONE;
186 op_data->op_lease_handle = och->och_lease_handle;
187 op_data->op_data = &ioc->lil_ids[0];
188 op_data->op_data_size =
189 ioc->lil_count * sizeof(ioc->lil_ids[0]);
193 case MDS_HSM_RELEASE:
194 LASSERT(data != NULL);
195 op_data->op_bias |= MDS_HSM_RELEASE;
196 op_data->op_data_version = *(__u64 *)data;
197 op_data->op_lease_handle = och->och_lease_handle;
198 op_data->op_attr.ia_valid |= ATTR_SIZE;
199 op_data->op_xvalid |= OP_XVALID_BLOCKS;
203 LASSERT(data == NULL);
207 if (!(op_data->op_attr.ia_valid & ATTR_SIZE))
208 op_data->op_xvalid |= OP_XVALID_LAZYSIZE;
209 if (!(op_data->op_xvalid & OP_XVALID_BLOCKS))
210 op_data->op_xvalid |= OP_XVALID_LAZYBLOCKS;
212 rc = md_close(md_exp, op_data, och->och_mod, &req);
213 if (rc != 0 && rc != -EINTR)
214 CERROR("%s: inode "DFID" mdc close failed: rc = %d\n",
215 md_exp->exp_obd->obd_name, PFID(&lli->lli_fid), rc);
217 if (rc == 0 && op_data->op_bias & bias) {
218 struct mdt_body *body;
220 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
221 if (!(body->mbo_valid & OBD_MD_CLOSE_INTENT_EXECED))
225 ll_finish_md_op_data(op_data);
229 md_clear_open_replay_data(md_exp, och);
230 och->och_open_handle.cookie = DEAD_HANDLE_MAGIC;
233 ptlrpc_req_finished(req); /* This is close request */
237 int ll_md_real_close(struct inode *inode, fmode_t fmode)
239 struct ll_inode_info *lli = ll_i2info(inode);
240 struct obd_client_handle **och_p;
241 struct obd_client_handle *och;
246 if (fmode & FMODE_WRITE) {
247 och_p = &lli->lli_mds_write_och;
248 och_usecount = &lli->lli_open_fd_write_count;
249 } else if (fmode & FMODE_EXEC) {
250 och_p = &lli->lli_mds_exec_och;
251 och_usecount = &lli->lli_open_fd_exec_count;
253 LASSERT(fmode & FMODE_READ);
254 och_p = &lli->lli_mds_read_och;
255 och_usecount = &lli->lli_open_fd_read_count;
258 mutex_lock(&lli->lli_och_mutex);
259 if (*och_usecount > 0) {
260 /* There are still users of this handle, so skip
262 mutex_unlock(&lli->lli_och_mutex);
268 mutex_unlock(&lli->lli_och_mutex);
271 /* There might be a race and this handle may already
273 rc = ll_close_inode_openhandle(inode, och, 0, NULL);
279 static int ll_md_close(struct inode *inode, struct file *file)
281 union ldlm_policy_data policy = {
282 .l_inodebits = { MDS_INODELOCK_OPEN },
284 __u64 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
285 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
286 struct ll_inode_info *lli = ll_i2info(inode);
287 struct lustre_handle lockh;
288 enum ldlm_mode lockmode;
292 /* clear group lock, if present */
293 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
294 ll_put_grouplock(inode, file, fd->fd_grouplock.lg_gid);
296 if (fd->fd_lease_och != NULL) {
299 /* Usually the lease is not released when the
300 * application crashed, we need to release here. */
301 rc = ll_lease_close(fd->fd_lease_och, inode, &lease_broken);
302 CDEBUG(rc ? D_ERROR : D_INODE, "Clean up lease "DFID" %d/%d\n",
303 PFID(&lli->lli_fid), rc, lease_broken);
305 fd->fd_lease_och = NULL;
308 if (fd->fd_och != NULL) {
309 rc = ll_close_inode_openhandle(inode, fd->fd_och, 0, NULL);
314 /* Let's see if we have good enough OPEN lock on the file and if
315 we can skip talking to MDS */
316 mutex_lock(&lli->lli_och_mutex);
317 if (fd->fd_omode & FMODE_WRITE) {
319 LASSERT(lli->lli_open_fd_write_count);
320 lli->lli_open_fd_write_count--;
321 } else if (fd->fd_omode & FMODE_EXEC) {
323 LASSERT(lli->lli_open_fd_exec_count);
324 lli->lli_open_fd_exec_count--;
327 LASSERT(lli->lli_open_fd_read_count);
328 lli->lli_open_fd_read_count--;
330 mutex_unlock(&lli->lli_och_mutex);
332 if (!md_lock_match(ll_i2mdexp(inode), flags, ll_inode2fid(inode),
333 LDLM_IBITS, &policy, lockmode, &lockh))
334 rc = ll_md_real_close(inode, fd->fd_omode);
337 LUSTRE_FPRIVATE(file) = NULL;
338 ll_file_data_put(fd);
343 /* While this returns an error code, fput() the caller does not, so we need
344 * to make every effort to clean up all of our state here. Also, applications
345 * rarely check close errors and even if an error is returned they will not
346 * re-try the close call.
348 int ll_file_release(struct inode *inode, struct file *file)
350 struct ll_file_data *fd;
351 struct ll_sb_info *sbi = ll_i2sbi(inode);
352 struct ll_inode_info *lli = ll_i2info(inode);
356 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
357 PFID(ll_inode2fid(inode)), inode);
359 if (inode->i_sb->s_root != file_dentry(file))
360 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
361 fd = LUSTRE_FPRIVATE(file);
364 /* The last ref on @file, maybe not the the owner pid of statahead,
365 * because parent and child process can share the same file handle. */
366 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd)
367 ll_deauthorize_statahead(inode, fd);
369 if (inode->i_sb->s_root == file_dentry(file)) {
370 LUSTRE_FPRIVATE(file) = NULL;
371 ll_file_data_put(fd);
375 if (!S_ISDIR(inode->i_mode)) {
376 if (lli->lli_clob != NULL)
377 lov_read_and_clear_async_rc(lli->lli_clob);
378 lli->lli_async_rc = 0;
381 rc = ll_md_close(inode, file);
383 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
384 libcfs_debug_dumplog();
389 static inline int ll_dom_readpage(void *data, struct page *page)
391 struct niobuf_local *lnb = data;
394 kaddr = ll_kmap_atomic(page, KM_USER0);
395 memcpy(kaddr, lnb->lnb_data, lnb->lnb_len);
396 if (lnb->lnb_len < PAGE_SIZE)
397 memset(kaddr + lnb->lnb_len, 0,
398 PAGE_SIZE - lnb->lnb_len);
399 flush_dcache_page(page);
400 SetPageUptodate(page);
401 ll_kunmap_atomic(kaddr, KM_USER0);
407 void ll_dom_finish_open(struct inode *inode, struct ptlrpc_request *req,
408 struct lookup_intent *it)
410 struct ll_inode_info *lli = ll_i2info(inode);
411 struct cl_object *obj = lli->lli_clob;
412 struct address_space *mapping = inode->i_mapping;
414 struct niobuf_remote *rnb;
416 struct lustre_handle lockh;
417 struct ldlm_lock *lock;
418 unsigned long index, start;
419 struct niobuf_local lnb;
420 bool dom_lock = false;
427 if (it->it_lock_mode != 0) {
428 lockh.cookie = it->it_lock_handle;
429 lock = ldlm_handle2lock(&lockh);
431 dom_lock = ldlm_has_dom(lock);
437 if (!req_capsule_has_field(&req->rq_pill, &RMF_NIOBUF_INLINE,
441 rnb = req_capsule_server_get(&req->rq_pill, &RMF_NIOBUF_INLINE);
442 if (rnb == NULL || rnb->rnb_len == 0)
445 /* LU-11595: Server may return whole file and that is OK always or
446 * it may return just file tail and its offset must be aligned with
447 * client PAGE_SIZE to be used on that client, if server's PAGE_SIZE is
448 * smaller then offset may be not aligned and that data is just ignored.
450 if (rnb->rnb_offset % PAGE_SIZE)
453 /* Server returns whole file or just file tail if it fills in
454 * reply buffer, in both cases total size should be inode size.
456 if (rnb->rnb_offset + rnb->rnb_len < i_size_read(inode)) {
457 CERROR("%s: server returns off/len %llu/%u < i_size %llu\n",
458 ll_i2sbi(inode)->ll_fsname, rnb->rnb_offset,
459 rnb->rnb_len, i_size_read(inode));
463 CDEBUG(D_INFO, "Get data along with open at %llu len %i, i_size %llu\n",
464 rnb->rnb_offset, rnb->rnb_len, i_size_read(inode));
466 data = (char *)rnb + sizeof(*rnb);
468 lnb.lnb_file_offset = rnb->rnb_offset;
469 start = lnb.lnb_file_offset / PAGE_SIZE;
471 LASSERT(lnb.lnb_file_offset % PAGE_SIZE == 0);
472 lnb.lnb_page_offset = 0;
474 lnb.lnb_data = data + (index << PAGE_SHIFT);
475 lnb.lnb_len = rnb->rnb_len - (index << PAGE_SHIFT);
476 if (lnb.lnb_len > PAGE_SIZE)
477 lnb.lnb_len = PAGE_SIZE;
479 vmpage = read_cache_page(mapping, index + start,
480 ll_dom_readpage, &lnb);
481 if (IS_ERR(vmpage)) {
482 CWARN("%s: cannot fill page %lu for "DFID
483 " with data: rc = %li\n",
484 ll_i2sbi(inode)->ll_fsname, index + start,
485 PFID(lu_object_fid(&obj->co_lu)),
491 } while (rnb->rnb_len > (index << PAGE_SHIFT));
495 static int ll_intent_file_open(struct dentry *de, void *lmm, int lmmsize,
496 struct lookup_intent *itp)
498 struct ll_sb_info *sbi = ll_i2sbi(de->d_inode);
499 struct dentry *parent = de->d_parent;
502 struct md_op_data *op_data;
503 struct ptlrpc_request *req = NULL;
507 LASSERT(parent != NULL);
508 LASSERT(itp->it_flags & MDS_OPEN_BY_FID);
510 /* if server supports open-by-fid, or file name is invalid, don't pack
511 * name in open request */
512 if (OBD_FAIL_CHECK(OBD_FAIL_LLITE_OPEN_BY_NAME) ||
513 !(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_OPEN_BY_FID)) {
515 len = de->d_name.len;
516 name = kmalloc(len + 1, GFP_NOFS);
521 spin_lock(&de->d_lock);
522 if (len != de->d_name.len) {
523 spin_unlock(&de->d_lock);
527 memcpy(name, de->d_name.name, len);
529 spin_unlock(&de->d_lock);
531 if (!lu_name_is_valid_2(name, len)) {
537 op_data = ll_prep_md_op_data(NULL, parent->d_inode, de->d_inode,
538 name, len, 0, LUSTRE_OPC_ANY, NULL);
539 if (IS_ERR(op_data)) {
541 RETURN(PTR_ERR(op_data));
543 op_data->op_data = lmm;
544 op_data->op_data_size = lmmsize;
546 rc = md_intent_lock(sbi->ll_md_exp, op_data, itp, &req,
547 &ll_md_blocking_ast, 0);
549 ll_finish_md_op_data(op_data);
551 /* reason for keep own exit path - don`t flood log
552 * with messages with -ESTALE errors.
554 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
555 it_open_error(DISP_OPEN_OPEN, itp))
557 ll_release_openhandle(de, itp);
561 if (it_disposition(itp, DISP_LOOKUP_NEG))
562 GOTO(out, rc = -ENOENT);
564 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
565 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
566 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
570 rc = ll_prep_inode(&de->d_inode, req, NULL, itp);
572 if (!rc && itp->it_lock_mode) {
573 ll_dom_finish_open(de->d_inode, req, itp);
574 ll_set_lock_data(sbi->ll_md_exp, de->d_inode, itp, NULL);
578 ptlrpc_req_finished(req);
579 ll_intent_drop_lock(itp);
581 /* We did open by fid, but by the time we got to the server,
582 * the object disappeared. If this is a create, we cannot really
583 * tell the userspace that the file it was trying to create
584 * does not exist. Instead let's return -ESTALE, and the VFS will
585 * retry the create with LOOKUP_REVAL that we are going to catch
586 * in ll_revalidate_dentry() and use lookup then.
588 if (rc == -ENOENT && itp->it_op & IT_CREAT)
594 static int ll_och_fill(struct obd_export *md_exp, struct lookup_intent *it,
595 struct obd_client_handle *och)
597 struct mdt_body *body;
599 body = req_capsule_server_get(&it->it_request->rq_pill, &RMF_MDT_BODY);
600 och->och_open_handle = body->mbo_open_handle;
601 och->och_fid = body->mbo_fid1;
602 och->och_lease_handle.cookie = it->it_lock_handle;
603 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
604 och->och_flags = it->it_flags;
606 return md_set_open_replay_data(md_exp, och, it);
609 static int ll_local_open(struct file *file, struct lookup_intent *it,
610 struct ll_file_data *fd, struct obd_client_handle *och)
612 struct inode *inode = file_inode(file);
615 LASSERT(!LUSTRE_FPRIVATE(file));
622 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
627 LUSTRE_FPRIVATE(file) = fd;
628 ll_readahead_init(inode, &fd->fd_ras);
629 fd->fd_omode = it->it_flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC);
631 /* ll_cl_context initialize */
632 rwlock_init(&fd->fd_lock);
633 INIT_LIST_HEAD(&fd->fd_lccs);
638 /* Open a file, and (for the very first open) create objects on the OSTs at
639 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
640 * creation or open until ll_lov_setstripe() ioctl is called.
642 * If we already have the stripe MD locally then we don't request it in
643 * md_open(), by passing a lmm_size = 0.
645 * It is up to the application to ensure no other processes open this file
646 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
647 * used. We might be able to avoid races of that sort by getting lli_open_sem
648 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
649 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
651 int ll_file_open(struct inode *inode, struct file *file)
653 struct ll_inode_info *lli = ll_i2info(inode);
654 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
655 .it_flags = file->f_flags };
656 struct obd_client_handle **och_p = NULL;
657 __u64 *och_usecount = NULL;
658 struct ll_file_data *fd;
662 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), flags %o\n",
663 PFID(ll_inode2fid(inode)), inode, file->f_flags);
665 it = file->private_data; /* XXX: compat macro */
666 file->private_data = NULL; /* prevent ll_local_open assertion */
668 fd = ll_file_data_get();
670 GOTO(out_nofiledata, rc = -ENOMEM);
673 if (S_ISDIR(inode->i_mode))
674 ll_authorize_statahead(inode, fd);
676 if (inode->i_sb->s_root == file_dentry(file)) {
677 LUSTRE_FPRIVATE(file) = fd;
681 if (!it || !it->it_disposition) {
682 /* Convert f_flags into access mode. We cannot use file->f_mode,
683 * because everything but O_ACCMODE mask was stripped from
685 if ((oit.it_flags + 1) & O_ACCMODE)
687 if (file->f_flags & O_TRUNC)
688 oit.it_flags |= FMODE_WRITE;
690 /* kernel only call f_op->open in dentry_open. filp_open calls
691 * dentry_open after call to open_namei that checks permissions.
692 * Only nfsd_open call dentry_open directly without checking
693 * permissions and because of that this code below is safe.
695 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
696 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
698 /* We do not want O_EXCL here, presumably we opened the file
699 * already? XXX - NFS implications? */
700 oit.it_flags &= ~O_EXCL;
702 /* bug20584, if "it_flags" contains O_CREAT, the file will be
703 * created if necessary, then "IT_CREAT" should be set to keep
704 * consistent with it */
705 if (oit.it_flags & O_CREAT)
706 oit.it_op |= IT_CREAT;
712 /* Let's see if we have file open on MDS already. */
713 if (it->it_flags & FMODE_WRITE) {
714 och_p = &lli->lli_mds_write_och;
715 och_usecount = &lli->lli_open_fd_write_count;
716 } else if (it->it_flags & FMODE_EXEC) {
717 och_p = &lli->lli_mds_exec_och;
718 och_usecount = &lli->lli_open_fd_exec_count;
720 och_p = &lli->lli_mds_read_och;
721 och_usecount = &lli->lli_open_fd_read_count;
724 mutex_lock(&lli->lli_och_mutex);
725 if (*och_p) { /* Open handle is present */
726 if (it_disposition(it, DISP_OPEN_OPEN)) {
727 /* Well, there's extra open request that we do not need,
728 let's close it somehow. This will decref request. */
729 rc = it_open_error(DISP_OPEN_OPEN, it);
731 mutex_unlock(&lli->lli_och_mutex);
732 GOTO(out_openerr, rc);
735 ll_release_openhandle(file_dentry(file), it);
739 rc = ll_local_open(file, it, fd, NULL);
742 mutex_unlock(&lli->lli_och_mutex);
743 GOTO(out_openerr, rc);
746 LASSERT(*och_usecount == 0);
747 if (!it->it_disposition) {
748 struct ll_dentry_data *ldd = ll_d2d(file->f_path.dentry);
749 /* We cannot just request lock handle now, new ELC code
750 means that one of other OPEN locks for this file
751 could be cancelled, and since blocking ast handler
752 would attempt to grab och_mutex as well, that would
753 result in a deadlock */
754 mutex_unlock(&lli->lli_och_mutex);
756 * Normally called under two situations:
758 * 2. A race/condition on MDS resulting in no open
759 * handle to be returned from LOOKUP|OPEN request,
760 * for example if the target entry was a symlink.
762 * Only fetch MDS_OPEN_LOCK if this is in NFS path,
763 * marked by a bit set in ll_iget_for_nfs. Clear the
764 * bit so that it's not confusing later callers.
766 * NB; when ldd is NULL, it must have come via normal
767 * lookup path only, since ll_iget_for_nfs always calls
770 if (ldd && ldd->lld_nfs_dentry) {
771 ldd->lld_nfs_dentry = 0;
772 it->it_flags |= MDS_OPEN_LOCK;
776 * Always specify MDS_OPEN_BY_FID because we don't want
777 * to get file with different fid.
779 it->it_flags |= MDS_OPEN_BY_FID;
780 rc = ll_intent_file_open(file_dentry(file), NULL, 0,
783 GOTO(out_openerr, rc);
787 OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
789 GOTO(out_och_free, rc = -ENOMEM);
793 /* md_intent_lock() didn't get a request ref if there was an
794 * open error, so don't do cleanup on the request here
796 /* XXX (green): Should not we bail out on any error here, not
797 * just open error? */
798 rc = it_open_error(DISP_OPEN_OPEN, it);
800 GOTO(out_och_free, rc);
802 LASSERTF(it_disposition(it, DISP_ENQ_OPEN_REF),
803 "inode %p: disposition %x, status %d\n", inode,
804 it_disposition(it, ~0), it->it_status);
806 rc = ll_local_open(file, it, fd, *och_p);
808 GOTO(out_och_free, rc);
810 mutex_unlock(&lli->lli_och_mutex);
813 /* Must do this outside lli_och_mutex lock to prevent deadlock where
814 different kind of OPEN lock for this same inode gets cancelled
815 by ldlm_cancel_lru */
816 if (!S_ISREG(inode->i_mode))
817 GOTO(out_och_free, rc);
819 cl_lov_delay_create_clear(&file->f_flags);
820 GOTO(out_och_free, rc);
824 if (och_p && *och_p) {
825 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
826 *och_p = NULL; /* OBD_FREE writes some magic there */
829 mutex_unlock(&lli->lli_och_mutex);
832 if (lli->lli_opendir_key == fd)
833 ll_deauthorize_statahead(inode, fd);
835 ll_file_data_put(fd);
837 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
841 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
842 ptlrpc_req_finished(it->it_request);
843 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
849 static int ll_md_blocking_lease_ast(struct ldlm_lock *lock,
850 struct ldlm_lock_desc *desc, void *data, int flag)
853 struct lustre_handle lockh;
857 case LDLM_CB_BLOCKING:
858 ldlm_lock2handle(lock, &lockh);
859 rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
861 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
865 case LDLM_CB_CANCELING:
873 * When setting a lease on a file, we take ownership of the lli_mds_*_och
874 * and save it as fd->fd_och so as to force client to reopen the file even
875 * if it has an open lock in cache already.
877 static int ll_lease_och_acquire(struct inode *inode, struct file *file,
878 struct lustre_handle *old_open_handle)
880 struct ll_inode_info *lli = ll_i2info(inode);
881 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
882 struct obd_client_handle **och_p;
887 /* Get the openhandle of the file */
888 mutex_lock(&lli->lli_och_mutex);
889 if (fd->fd_lease_och != NULL)
890 GOTO(out_unlock, rc = -EBUSY);
892 if (fd->fd_och == NULL) {
893 if (file->f_mode & FMODE_WRITE) {
894 LASSERT(lli->lli_mds_write_och != NULL);
895 och_p = &lli->lli_mds_write_och;
896 och_usecount = &lli->lli_open_fd_write_count;
898 LASSERT(lli->lli_mds_read_och != NULL);
899 och_p = &lli->lli_mds_read_och;
900 och_usecount = &lli->lli_open_fd_read_count;
903 if (*och_usecount > 1)
904 GOTO(out_unlock, rc = -EBUSY);
911 *old_open_handle = fd->fd_och->och_open_handle;
915 mutex_unlock(&lli->lli_och_mutex);
920 * Release ownership on lli_mds_*_och when putting back a file lease.
922 static int ll_lease_och_release(struct inode *inode, struct file *file)
924 struct ll_inode_info *lli = ll_i2info(inode);
925 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
926 struct obd_client_handle **och_p;
927 struct obd_client_handle *old_och = NULL;
932 mutex_lock(&lli->lli_och_mutex);
933 if (file->f_mode & FMODE_WRITE) {
934 och_p = &lli->lli_mds_write_och;
935 och_usecount = &lli->lli_open_fd_write_count;
937 och_p = &lli->lli_mds_read_och;
938 och_usecount = &lli->lli_open_fd_read_count;
941 /* The file may have been open by another process (broken lease) so
942 * *och_p is not NULL. In this case we should simply increase usecount
945 if (*och_p != NULL) {
946 old_och = fd->fd_och;
953 mutex_unlock(&lli->lli_och_mutex);
956 rc = ll_close_inode_openhandle(inode, old_och, 0, NULL);
962 * Acquire a lease and open the file.
964 static struct obd_client_handle *
965 ll_lease_open(struct inode *inode, struct file *file, fmode_t fmode,
968 struct lookup_intent it = { .it_op = IT_OPEN };
969 struct ll_sb_info *sbi = ll_i2sbi(inode);
970 struct md_op_data *op_data;
971 struct ptlrpc_request *req = NULL;
972 struct lustre_handle old_open_handle = { 0 };
973 struct obd_client_handle *och = NULL;
978 if (fmode != FMODE_WRITE && fmode != FMODE_READ)
979 RETURN(ERR_PTR(-EINVAL));
982 if (!(fmode & file->f_mode) || (file->f_mode & FMODE_EXEC))
983 RETURN(ERR_PTR(-EPERM));
985 rc = ll_lease_och_acquire(inode, file, &old_open_handle);
992 RETURN(ERR_PTR(-ENOMEM));
994 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
995 LUSTRE_OPC_ANY, NULL);
997 GOTO(out, rc = PTR_ERR(op_data));
999 /* To tell the MDT this openhandle is from the same owner */
1000 op_data->op_open_handle = old_open_handle;
1002 it.it_flags = fmode | open_flags;
1003 it.it_flags |= MDS_OPEN_LOCK | MDS_OPEN_BY_FID | MDS_OPEN_LEASE;
1004 rc = md_intent_lock(sbi->ll_md_exp, op_data, &it, &req,
1005 &ll_md_blocking_lease_ast,
1006 /* LDLM_FL_NO_LRU: To not put the lease lock into LRU list, otherwise
1007 * it can be cancelled which may mislead applications that the lease is
1009 * LDLM_FL_EXCL: Set this flag so that it won't be matched by normal
1010 * open in ll_md_blocking_ast(). Otherwise as ll_md_blocking_lease_ast
1011 * doesn't deal with openhandle, so normal openhandle will be leaked. */
1012 LDLM_FL_NO_LRU | LDLM_FL_EXCL);
1013 ll_finish_md_op_data(op_data);
1014 ptlrpc_req_finished(req);
1016 GOTO(out_release_it, rc);
1018 if (it_disposition(&it, DISP_LOOKUP_NEG))
1019 GOTO(out_release_it, rc = -ENOENT);
1021 rc = it_open_error(DISP_OPEN_OPEN, &it);
1023 GOTO(out_release_it, rc);
1025 LASSERT(it_disposition(&it, DISP_ENQ_OPEN_REF));
1026 ll_och_fill(sbi->ll_md_exp, &it, och);
1028 if (!it_disposition(&it, DISP_OPEN_LEASE)) /* old server? */
1029 GOTO(out_close, rc = -EOPNOTSUPP);
1031 /* already get lease, handle lease lock */
1032 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
1033 if (it.it_lock_mode == 0 ||
1034 it.it_lock_bits != MDS_INODELOCK_OPEN) {
1035 /* open lock must return for lease */
1036 CERROR(DFID "lease granted but no open lock, %d/%llu.\n",
1037 PFID(ll_inode2fid(inode)), it.it_lock_mode,
1039 GOTO(out_close, rc = -EPROTO);
1042 ll_intent_release(&it);
1046 /* Cancel open lock */
1047 if (it.it_lock_mode != 0) {
1048 ldlm_lock_decref_and_cancel(&och->och_lease_handle,
1050 it.it_lock_mode = 0;
1051 och->och_lease_handle.cookie = 0ULL;
1053 rc2 = ll_close_inode_openhandle(inode, och, 0, NULL);
1055 CERROR("%s: error closing file "DFID": %d\n",
1056 sbi->ll_fsname, PFID(&ll_i2info(inode)->lli_fid), rc2);
1057 och = NULL; /* och has been freed in ll_close_inode_openhandle() */
1059 ll_intent_release(&it);
1063 RETURN(ERR_PTR(rc));
1067 * Check whether a layout swap can be done between two inodes.
1069 * \param[in] inode1 First inode to check
1070 * \param[in] inode2 Second inode to check
1072 * \retval 0 on success, layout swap can be performed between both inodes
1073 * \retval negative error code if requirements are not met
1075 static int ll_check_swap_layouts_validity(struct inode *inode1,
1076 struct inode *inode2)
1078 if (!S_ISREG(inode1->i_mode) || !S_ISREG(inode2->i_mode))
1081 if (inode_permission(inode1, MAY_WRITE) ||
1082 inode_permission(inode2, MAY_WRITE))
1085 if (inode1->i_sb != inode2->i_sb)
1091 static int ll_swap_layouts_close(struct obd_client_handle *och,
1092 struct inode *inode, struct inode *inode2)
1094 const struct lu_fid *fid1 = ll_inode2fid(inode);
1095 const struct lu_fid *fid2;
1099 CDEBUG(D_INODE, "%s: biased close of file "DFID"\n",
1100 ll_i2sbi(inode)->ll_fsname, PFID(fid1));
1102 rc = ll_check_swap_layouts_validity(inode, inode2);
1104 GOTO(out_free_och, rc);
1106 /* We now know that inode2 is a lustre inode */
1107 fid2 = ll_inode2fid(inode2);
1109 rc = lu_fid_cmp(fid1, fid2);
1111 GOTO(out_free_och, rc = -EINVAL);
1113 /* Close the file and {swap,merge} layouts between inode & inode2.
1114 * NB: lease lock handle is released in mdc_close_layout_swap_pack()
1115 * because we still need it to pack l_remote_handle to MDT. */
1116 rc = ll_close_inode_openhandle(inode, och, MDS_CLOSE_LAYOUT_SWAP,
1119 och = NULL; /* freed in ll_close_inode_openhandle() */
1129 * Release lease and close the file.
1130 * It will check if the lease has ever broken.
1132 static int ll_lease_close_intent(struct obd_client_handle *och,
1133 struct inode *inode,
1134 bool *lease_broken, enum mds_op_bias bias,
1137 struct ldlm_lock *lock;
1138 bool cancelled = true;
1142 lock = ldlm_handle2lock(&och->och_lease_handle);
1144 lock_res_and_lock(lock);
1145 cancelled = ldlm_is_cancel(lock);
1146 unlock_res_and_lock(lock);
1147 LDLM_LOCK_PUT(lock);
1150 CDEBUG(D_INODE, "lease for "DFID" broken? %d, bias: %x\n",
1151 PFID(&ll_i2info(inode)->lli_fid), cancelled, bias);
1153 if (lease_broken != NULL)
1154 *lease_broken = cancelled;
1156 if (!cancelled && !bias)
1157 ldlm_cli_cancel(&och->och_lease_handle, 0);
1159 if (cancelled) { /* no need to excute intent */
1164 rc = ll_close_inode_openhandle(inode, och, bias, data);
1168 static int ll_lease_close(struct obd_client_handle *och, struct inode *inode,
1171 return ll_lease_close_intent(och, inode, lease_broken, 0, NULL);
1175 * After lease is taken, send the RPC MDS_REINT_RESYNC to the MDT
1177 static int ll_lease_file_resync(struct obd_client_handle *och,
1178 struct inode *inode, unsigned long arg)
1180 struct ll_sb_info *sbi = ll_i2sbi(inode);
1181 struct md_op_data *op_data;
1182 struct ll_ioc_lease_id ioc;
1183 __u64 data_version_unused;
1187 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
1188 LUSTRE_OPC_ANY, NULL);
1189 if (IS_ERR(op_data))
1190 RETURN(PTR_ERR(op_data));
1192 if (copy_from_user(&ioc, (struct ll_ioc_lease_id __user *)arg,
1196 /* before starting file resync, it's necessary to clean up page cache
1197 * in client memory, otherwise once the layout version is increased,
1198 * writing back cached data will be denied the OSTs. */
1199 rc = ll_data_version(inode, &data_version_unused, LL_DV_WR_FLUSH);
1203 op_data->op_lease_handle = och->och_lease_handle;
1204 op_data->op_mirror_id = ioc.lil_mirror_id;
1205 rc = md_file_resync(sbi->ll_md_exp, op_data);
1211 ll_finish_md_op_data(op_data);
1215 int ll_merge_attr(const struct lu_env *env, struct inode *inode)
1217 struct ll_inode_info *lli = ll_i2info(inode);
1218 struct cl_object *obj = lli->lli_clob;
1219 struct cl_attr *attr = vvp_env_thread_attr(env);
1227 ll_inode_size_lock(inode);
1229 /* Merge timestamps the most recently obtained from MDS with
1230 * timestamps obtained from OSTs.
1232 * Do not overwrite atime of inode because it may be refreshed
1233 * by file_accessed() function. If the read was served by cache
1234 * data, there is no RPC to be sent so that atime may not be
1235 * transferred to OSTs at all. MDT only updates atime at close time
1236 * if it's at least 'mdd.*.atime_diff' older.
1237 * All in all, the atime in Lustre does not strictly comply with
1238 * POSIX. Solving this problem needs to send an RPC to MDT for each
1239 * read, this will hurt performance.
1241 if (inode->i_atime.tv_sec < lli->lli_atime ||
1242 lli->lli_update_atime) {
1243 inode->i_atime.tv_sec = lli->lli_atime;
1244 lli->lli_update_atime = 0;
1246 inode->i_mtime.tv_sec = lli->lli_mtime;
1247 inode->i_ctime.tv_sec = lli->lli_ctime;
1249 mtime = inode->i_mtime.tv_sec;
1250 atime = inode->i_atime.tv_sec;
1251 ctime = inode->i_ctime.tv_sec;
1253 cl_object_attr_lock(obj);
1254 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_MERGE))
1257 rc = cl_object_attr_get(env, obj, attr);
1258 cl_object_attr_unlock(obj);
1261 GOTO(out_size_unlock, rc = (rc == -ENODATA ? 0 : rc));
1263 if (atime < attr->cat_atime)
1264 atime = attr->cat_atime;
1266 if (ctime < attr->cat_ctime)
1267 ctime = attr->cat_ctime;
1269 if (mtime < attr->cat_mtime)
1270 mtime = attr->cat_mtime;
1272 CDEBUG(D_VFSTRACE, DFID" updating i_size %llu\n",
1273 PFID(&lli->lli_fid), attr->cat_size);
1275 i_size_write(inode, attr->cat_size);
1276 inode->i_blocks = attr->cat_blocks;
1278 inode->i_mtime.tv_sec = mtime;
1279 inode->i_atime.tv_sec = atime;
1280 inode->i_ctime.tv_sec = ctime;
1283 ll_inode_size_unlock(inode);
1289 * Set designated mirror for I/O.
1291 * So far only read, write, and truncated can support to issue I/O to
1292 * designated mirror.
1294 void ll_io_set_mirror(struct cl_io *io, const struct file *file)
1296 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1298 /* clear layout version for generic(non-resync) I/O in case it carries
1299 * stale layout version due to I/O restart */
1300 io->ci_layout_version = 0;
1302 /* FLR: disable non-delay for designated mirror I/O because obviously
1303 * only one mirror is available */
1304 if (fd->fd_designated_mirror > 0) {
1306 io->ci_designated_mirror = fd->fd_designated_mirror;
1307 io->ci_layout_version = fd->fd_layout_version;
1310 CDEBUG(D_VFSTRACE, "%s: desiginated mirror: %d\n",
1311 file->f_path.dentry->d_name.name, io->ci_designated_mirror);
1314 static bool file_is_noatime(const struct file *file)
1316 const struct vfsmount *mnt = file->f_path.mnt;
1317 const struct inode *inode = file_inode((struct file *)file);
1319 /* Adapted from file_accessed() and touch_atime().*/
1320 if (file->f_flags & O_NOATIME)
1323 if (inode->i_flags & S_NOATIME)
1326 if (IS_NOATIME(inode))
1329 if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
1332 if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
1335 if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
1341 static void ll_io_init(struct cl_io *io, struct file *file, enum cl_io_type iot)
1343 struct inode *inode = file_inode(file);
1344 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1346 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
1347 io->ci_lock_no_expand = fd->ll_lock_no_expand;
1349 if (iot == CIT_WRITE) {
1350 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
1351 io->u.ci_wr.wr_sync = !!(file->f_flags & O_SYNC ||
1352 file->f_flags & O_DIRECT ||
1355 io->ci_obj = ll_i2info(inode)->lli_clob;
1356 io->ci_lockreq = CILR_MAYBE;
1357 if (ll_file_nolock(file)) {
1358 io->ci_lockreq = CILR_NEVER;
1359 io->ci_no_srvlock = 1;
1360 } else if (file->f_flags & O_APPEND) {
1361 io->ci_lockreq = CILR_MANDATORY;
1363 io->ci_noatime = file_is_noatime(file);
1365 /* FLR: only use non-delay I/O for read as there is only one
1366 * avaliable mirror for write. */
1367 io->ci_ndelay = !(iot == CIT_WRITE);
1369 ll_io_set_mirror(io, file);
1372 static void ll_heat_add(struct inode *inode, enum cl_io_type iot,
1375 struct ll_inode_info *lli = ll_i2info(inode);
1376 struct ll_sb_info *sbi = ll_i2sbi(inode);
1377 enum obd_heat_type sample_type;
1378 enum obd_heat_type iobyte_type;
1379 __u64 now = ktime_get_real_seconds();
1381 if (!ll_sbi_has_file_heat(sbi) ||
1382 lli->lli_heat_flags & LU_HEAT_FLAG_OFF)
1385 if (iot == CIT_READ) {
1386 sample_type = OBD_HEAT_READSAMPLE;
1387 iobyte_type = OBD_HEAT_READBYTE;
1388 } else if (iot == CIT_WRITE) {
1389 sample_type = OBD_HEAT_WRITESAMPLE;
1390 iobyte_type = OBD_HEAT_WRITEBYTE;
1395 spin_lock(&lli->lli_heat_lock);
1396 obd_heat_add(&lli->lli_heat_instances[sample_type], now, 1,
1397 sbi->ll_heat_decay_weight, sbi->ll_heat_period_second);
1398 obd_heat_add(&lli->lli_heat_instances[iobyte_type], now, count,
1399 sbi->ll_heat_decay_weight, sbi->ll_heat_period_second);
1400 spin_unlock(&lli->lli_heat_lock);
1404 ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
1405 struct file *file, enum cl_io_type iot,
1406 loff_t *ppos, size_t count)
1408 struct vvp_io *vio = vvp_env_io(env);
1409 struct inode *inode = file_inode(file);
1410 struct ll_inode_info *lli = ll_i2info(inode);
1411 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1412 struct range_lock range;
1416 unsigned retried = 0;
1417 bool restarted = false;
1421 CDEBUG(D_VFSTRACE, "%s: %s ppos: %llu, count: %zu\n",
1422 file_dentry(file)->d_name.name,
1423 iot == CIT_READ ? "read" : "write", *ppos, count);
1426 io = vvp_env_thread_io(env);
1427 ll_io_init(io, file, iot);
1428 io->ci_ndelay_tried = retried;
1430 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
1431 bool range_locked = false;
1433 if (file->f_flags & O_APPEND)
1434 range_lock_init(&range, 0, LUSTRE_EOF);
1436 range_lock_init(&range, *ppos, *ppos + count - 1);
1438 vio->vui_fd = LUSTRE_FPRIVATE(file);
1439 vio->vui_io_subtype = args->via_io_subtype;
1441 switch (vio->vui_io_subtype) {
1443 vio->vui_iter = args->u.normal.via_iter;
1444 vio->vui_iocb = args->u.normal.via_iocb;
1445 /* Direct IO reads must also take range lock,
1446 * or multiple reads will try to work on the same pages
1447 * See LU-6227 for details. */
1448 if (((iot == CIT_WRITE) ||
1449 (iot == CIT_READ && (file->f_flags & O_DIRECT))) &&
1450 !(vio->vui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1451 CDEBUG(D_VFSTRACE, "Range lock "RL_FMT"\n",
1453 rc = range_lock(&lli->lli_write_tree, &range);
1457 range_locked = true;
1461 vio->u.splice.vui_pipe = args->u.splice.via_pipe;
1462 vio->u.splice.vui_flags = args->u.splice.via_flags;
1465 CERROR("unknown IO subtype %u\n", vio->vui_io_subtype);
1469 ll_cl_add(file, env, io, LCC_RW);
1470 rc = cl_io_loop(env, io);
1471 ll_cl_remove(file, env);
1474 CDEBUG(D_VFSTRACE, "Range unlock "RL_FMT"\n",
1476 range_unlock(&lli->lli_write_tree, &range);
1479 /* cl_io_rw_init() handled IO */
1483 if (io->ci_nob > 0) {
1484 result += io->ci_nob;
1485 count -= io->ci_nob;
1486 *ppos = io->u.ci_wr.wr.crw_pos; /* for splice */
1488 /* prepare IO restart */
1489 if (count > 0 && args->via_io_subtype == IO_NORMAL)
1490 args->u.normal.via_iter = vio->vui_iter;
1493 cl_io_fini(env, io);
1496 "%s: %d io complete with rc: %d, result: %zd, restart: %d\n",
1497 file->f_path.dentry->d_name.name,
1498 iot, rc, result, io->ci_need_restart);
1500 if ((rc == 0 || rc == -ENODATA) && count > 0 && io->ci_need_restart) {
1502 "%s: restart %s from %lld, count: %zu, ret: %zd, rc: %d\n",
1503 file_dentry(file)->d_name.name,
1504 iot == CIT_READ ? "read" : "write",
1505 *ppos, count, result, rc);
1506 /* preserve the tried count for FLR */
1507 retried = io->ci_ndelay_tried;
1512 if (iot == CIT_READ) {
1514 ll_stats_ops_tally(ll_i2sbi(inode),
1515 LPROC_LL_READ_BYTES, result);
1516 } else if (iot == CIT_WRITE) {
1518 ll_stats_ops_tally(ll_i2sbi(inode),
1519 LPROC_LL_WRITE_BYTES, result);
1520 fd->fd_write_failed = false;
1521 } else if (result == 0 && rc == 0) {
1524 fd->fd_write_failed = true;
1526 fd->fd_write_failed = false;
1527 } else if (rc != -ERESTARTSYS) {
1528 fd->fd_write_failed = true;
1532 CDEBUG(D_VFSTRACE, "iot: %d, result: %zd\n", iot, result);
1534 ll_heat_add(inode, iot, result);
1536 RETURN(result > 0 ? result : rc);
1540 * The purpose of fast read is to overcome per I/O overhead and improve IOPS
1541 * especially for small I/O.
1543 * To serve a read request, CLIO has to create and initialize a cl_io and
1544 * then request DLM lock. This has turned out to have siginificant overhead
1545 * and affects the performance of small I/O dramatically.
1547 * It's not necessary to create a cl_io for each I/O. Under the help of read
1548 * ahead, most of the pages being read are already in memory cache and we can
1549 * read those pages directly because if the pages exist, the corresponding DLM
1550 * lock must exist so that page content must be valid.
1552 * In fast read implementation, the llite speculatively finds and reads pages
1553 * in memory cache. There are three scenarios for fast read:
1554 * - If the page exists and is uptodate, kernel VM will provide the data and
1555 * CLIO won't be intervened;
1556 * - If the page was brought into memory by read ahead, it will be exported
1557 * and read ahead parameters will be updated;
1558 * - Otherwise the page is not in memory, we can't do fast read. Therefore,
1559 * it will go back and invoke normal read, i.e., a cl_io will be created
1560 * and DLM lock will be requested.
1562 * POSIX compliance: posix standard states that read is intended to be atomic.
1563 * Lustre read implementation is in line with Linux kernel read implementation
1564 * and neither of them complies with POSIX standard in this matter. Fast read
1565 * doesn't make the situation worse on single node but it may interleave write
1566 * results from multiple nodes due to short read handling in ll_file_aio_read().
1568 * \param env - lu_env
1569 * \param iocb - kiocb from kernel
1570 * \param iter - user space buffers where the data will be copied
1572 * \retval - number of bytes have been read, or error code if error occurred.
1575 ll_do_fast_read(struct kiocb *iocb, struct iov_iter *iter)
1579 if (!ll_sbi_has_fast_read(ll_i2sbi(file_inode(iocb->ki_filp))))
1582 /* NB: we can't do direct IO for fast read because it will need a lock
1583 * to make IO engine happy. */
1584 if (iocb->ki_filp->f_flags & O_DIRECT)
1587 result = generic_file_read_iter(iocb, iter);
1589 /* If the first page is not in cache, generic_file_aio_read() will be
1590 * returned with -ENODATA.
1591 * See corresponding code in ll_readpage(). */
1592 if (result == -ENODATA)
1596 ll_heat_add(file_inode(iocb->ki_filp), CIT_READ, result);
1597 ll_stats_ops_tally(ll_i2sbi(file_inode(iocb->ki_filp)),
1598 LPROC_LL_READ_BYTES, result);
1605 * Read from a file (through the page cache).
1607 static ssize_t ll_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
1610 struct vvp_io_args *args;
1615 result = ll_do_fast_read(iocb, to);
1616 if (result < 0 || iov_iter_count(to) == 0)
1619 env = cl_env_get(&refcheck);
1621 return PTR_ERR(env);
1623 args = ll_env_args(env, IO_NORMAL);
1624 args->u.normal.via_iter = to;
1625 args->u.normal.via_iocb = iocb;
1627 rc2 = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1628 &iocb->ki_pos, iov_iter_count(to));
1631 else if (result == 0)
1634 cl_env_put(env, &refcheck);
1640 * Similar trick to ll_do_fast_read, this improves write speed for tiny writes.
1641 * If a page is already in the page cache and dirty (and some other things -
1642 * See ll_tiny_write_begin for the instantiation of these rules), then we can
1643 * write to it without doing a full I/O, because Lustre already knows about it
1644 * and will write it out. This saves a lot of processing time.
1646 * All writes here are within one page, so exclusion is handled by the page
1647 * lock on the vm page. We do not do tiny writes for writes which touch
1648 * multiple pages because it's very unlikely multiple sequential pages are
1649 * are already dirty.
1651 * We limit these to < PAGE_SIZE because PAGE_SIZE writes are relatively common
1652 * and are unlikely to be to already dirty pages.
1654 * Attribute updates are important here, we do them in ll_tiny_write_end.
1656 static ssize_t ll_do_tiny_write(struct kiocb *iocb, struct iov_iter *iter)
1658 ssize_t count = iov_iter_count(iter);
1659 struct file *file = iocb->ki_filp;
1660 struct inode *inode = file_inode(file);
1661 bool lock_inode = !IS_NOSEC(inode);
1666 /* Restrict writes to single page and < PAGE_SIZE. See comment at top
1667 * of function for why.
1669 if (count >= PAGE_SIZE ||
1670 (iocb->ki_pos & (PAGE_SIZE-1)) + count > PAGE_SIZE)
1673 if (unlikely(lock_inode))
1675 result = __generic_file_write_iter(iocb, iter);
1677 if (unlikely(lock_inode))
1678 inode_unlock(inode);
1680 /* If the page is not already dirty, ll_tiny_write_begin returns
1681 * -ENODATA. We continue on to normal write.
1683 if (result == -ENODATA)
1687 ll_heat_add(inode, CIT_WRITE, result);
1688 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_WRITE_BYTES,
1690 ll_file_set_flag(ll_i2info(inode), LLIF_DATA_MODIFIED);
1693 CDEBUG(D_VFSTRACE, "result: %zu, original count %zu\n", result, count);
1699 * Write to a file (through the page cache).
1701 static ssize_t ll_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
1703 struct vvp_io_args *args;
1705 ssize_t rc_tiny = 0, rc_normal;
1710 /* NB: we can't do direct IO for tiny writes because they use the page
1711 * cache, we can't do sync writes because tiny writes can't flush
1712 * pages, and we can't do append writes because we can't guarantee the
1713 * required DLM locks are held to protect file size.
1715 if (ll_sbi_has_tiny_write(ll_i2sbi(file_inode(iocb->ki_filp))) &&
1716 !(iocb->ki_filp->f_flags & (O_DIRECT | O_SYNC | O_APPEND)))
1717 rc_tiny = ll_do_tiny_write(iocb, from);
1719 /* In case of error, go on and try normal write - Only stop if tiny
1720 * write completed I/O.
1722 if (iov_iter_count(from) == 0)
1723 GOTO(out, rc_normal = rc_tiny);
1725 env = cl_env_get(&refcheck);
1727 return PTR_ERR(env);
1729 args = ll_env_args(env, IO_NORMAL);
1730 args->u.normal.via_iter = from;
1731 args->u.normal.via_iocb = iocb;
1733 rc_normal = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1734 &iocb->ki_pos, iov_iter_count(from));
1736 /* On success, combine bytes written. */
1737 if (rc_tiny >= 0 && rc_normal > 0)
1738 rc_normal += rc_tiny;
1739 /* On error, only return error from normal write if tiny write did not
1740 * write any bytes. Otherwise return bytes written by tiny write.
1742 else if (rc_tiny > 0)
1743 rc_normal = rc_tiny;
1745 cl_env_put(env, &refcheck);
1750 #ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
1752 * XXX: exact copy from kernel code (__generic_file_aio_write_nolock)
1754 static int ll_file_get_iov_count(const struct iovec *iov,
1755 unsigned long *nr_segs, size_t *count)
1760 for (seg = 0; seg < *nr_segs; seg++) {
1761 const struct iovec *iv = &iov[seg];
1764 * If any segment has a negative length, or the cumulative
1765 * length ever wraps negative then return -EINVAL.
1768 if (unlikely((ssize_t)(cnt|iv->iov_len) < 0))
1770 if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
1775 cnt -= iv->iov_len; /* This segment is no good */
1782 static ssize_t ll_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
1783 unsigned long nr_segs, loff_t pos)
1790 result = ll_file_get_iov_count(iov, &nr_segs, &iov_count);
1794 # ifdef HAVE_IOV_ITER_INIT_DIRECTION
1795 iov_iter_init(&to, READ, iov, nr_segs, iov_count);
1796 # else /* !HAVE_IOV_ITER_INIT_DIRECTION */
1797 iov_iter_init(&to, iov, nr_segs, iov_count, 0);
1798 # endif /* HAVE_IOV_ITER_INIT_DIRECTION */
1800 result = ll_file_read_iter(iocb, &to);
1805 static ssize_t ll_file_read(struct file *file, char __user *buf, size_t count,
1808 struct iovec iov = { .iov_base = buf, .iov_len = count };
1813 init_sync_kiocb(&kiocb, file);
1814 kiocb.ki_pos = *ppos;
1815 #ifdef HAVE_KIOCB_KI_LEFT
1816 kiocb.ki_left = count;
1817 #elif defined(HAVE_KI_NBYTES)
1818 kiocb.i_nbytes = count;
1821 result = ll_file_aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
1822 *ppos = kiocb.ki_pos;
1828 * Write to a file (through the page cache).
1831 static ssize_t ll_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
1832 unsigned long nr_segs, loff_t pos)
1834 struct iov_iter from;
1839 result = ll_file_get_iov_count(iov, &nr_segs, &iov_count);
1843 # ifdef HAVE_IOV_ITER_INIT_DIRECTION
1844 iov_iter_init(&from, WRITE, iov, nr_segs, iov_count);
1845 # else /* !HAVE_IOV_ITER_INIT_DIRECTION */
1846 iov_iter_init(&from, iov, nr_segs, iov_count, 0);
1847 # endif /* HAVE_IOV_ITER_INIT_DIRECTION */
1849 result = ll_file_write_iter(iocb, &from);
1854 static ssize_t ll_file_write(struct file *file, const char __user *buf,
1855 size_t count, loff_t *ppos)
1857 struct iovec iov = { .iov_base = (void __user *)buf,
1864 init_sync_kiocb(&kiocb, file);
1865 kiocb.ki_pos = *ppos;
1866 #ifdef HAVE_KIOCB_KI_LEFT
1867 kiocb.ki_left = count;
1868 #elif defined(HAVE_KI_NBYTES)
1869 kiocb.ki_nbytes = count;
1872 result = ll_file_aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
1873 *ppos = kiocb.ki_pos;
1877 #endif /* !HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
1880 * Send file content (through pagecache) somewhere with helper
1882 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1883 struct pipe_inode_info *pipe, size_t count,
1887 struct vvp_io_args *args;
1892 env = cl_env_get(&refcheck);
1894 RETURN(PTR_ERR(env));
1896 args = ll_env_args(env, IO_SPLICE);
1897 args->u.splice.via_pipe = pipe;
1898 args->u.splice.via_flags = flags;
1900 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1901 cl_env_put(env, &refcheck);
1905 int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
1906 __u64 flags, struct lov_user_md *lum, int lum_size)
1908 struct lookup_intent oit = {
1910 .it_flags = flags | MDS_OPEN_BY_FID,
1915 ll_inode_size_lock(inode);
1916 rc = ll_intent_file_open(dentry, lum, lum_size, &oit);
1918 GOTO(out_unlock, rc);
1920 ll_release_openhandle(dentry, &oit);
1923 ll_inode_size_unlock(inode);
1924 ll_intent_release(&oit);
1929 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1930 struct lov_mds_md **lmmp, int *lmm_size,
1931 struct ptlrpc_request **request)
1933 struct ll_sb_info *sbi = ll_i2sbi(inode);
1934 struct mdt_body *body;
1935 struct lov_mds_md *lmm = NULL;
1936 struct ptlrpc_request *req = NULL;
1937 struct md_op_data *op_data;
1940 rc = ll_get_default_mdsize(sbi, &lmmsize);
1944 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1945 strlen(filename), lmmsize,
1946 LUSTRE_OPC_ANY, NULL);
1947 if (IS_ERR(op_data))
1948 RETURN(PTR_ERR(op_data));
1950 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1951 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1952 ll_finish_md_op_data(op_data);
1954 CDEBUG(D_INFO, "md_getattr_name failed "
1955 "on %s: rc %d\n", filename, rc);
1959 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1960 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1962 lmmsize = body->mbo_eadatasize;
1964 if (!(body->mbo_valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1966 GOTO(out, rc = -ENODATA);
1969 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1970 LASSERT(lmm != NULL);
1972 if (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1) &&
1973 lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3) &&
1974 lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_COMP_V1))
1975 GOTO(out, rc = -EPROTO);
1978 * This is coming from the MDS, so is probably in
1979 * little endian. We convert it to host endian before
1980 * passing it to userspace.
1982 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1985 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1) ||
1986 lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1987 stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1988 if (le32_to_cpu(lmm->lmm_pattern) &
1989 LOV_PATTERN_F_RELEASED)
1993 /* if function called for directory - we should
1994 * avoid swab not existent lsm objects */
1995 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1996 lustre_swab_lov_user_md_v1(
1997 (struct lov_user_md_v1 *)lmm);
1998 if (S_ISREG(body->mbo_mode))
1999 lustre_swab_lov_user_md_objects(
2000 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
2002 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
2003 lustre_swab_lov_user_md_v3(
2004 (struct lov_user_md_v3 *)lmm);
2005 if (S_ISREG(body->mbo_mode))
2006 lustre_swab_lov_user_md_objects(
2007 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
2009 } else if (lmm->lmm_magic ==
2010 cpu_to_le32(LOV_MAGIC_COMP_V1)) {
2011 lustre_swab_lov_comp_md_v1(
2012 (struct lov_comp_md_v1 *)lmm);
2018 *lmm_size = lmmsize;
2023 static int ll_lov_setea(struct inode *inode, struct file *file,
2026 __u64 flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
2027 struct lov_user_md *lump;
2028 int lum_size = sizeof(struct lov_user_md) +
2029 sizeof(struct lov_user_ost_data);
2033 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2036 OBD_ALLOC_LARGE(lump, lum_size);
2040 if (copy_from_user(lump, arg, lum_size))
2041 GOTO(out_lump, rc = -EFAULT);
2043 rc = ll_lov_setstripe_ea_info(inode, file_dentry(file), flags, lump,
2045 cl_lov_delay_create_clear(&file->f_flags);
2048 OBD_FREE_LARGE(lump, lum_size);
2052 static int ll_file_getstripe(struct inode *inode, void __user *lum, size_t size)
2059 env = cl_env_get(&refcheck);
2061 RETURN(PTR_ERR(env));
2063 rc = cl_object_getstripe(env, ll_i2info(inode)->lli_clob, lum, size);
2064 cl_env_put(env, &refcheck);
2068 static int ll_lov_setstripe(struct inode *inode, struct file *file,
2071 struct lov_user_md __user *lum = (struct lov_user_md __user *)arg;
2072 struct lov_user_md *klum;
2074 __u64 flags = FMODE_WRITE;
2077 rc = ll_copy_user_md(lum, &klum);
2082 rc = ll_lov_setstripe_ea_info(inode, file_dentry(file), flags, klum,
2087 rc = put_user(0, &lum->lmm_stripe_count);
2091 rc = ll_layout_refresh(inode, &gen);
2095 rc = ll_file_getstripe(inode, arg, lum_size);
2097 cl_lov_delay_create_clear(&file->f_flags);
2100 OBD_FREE(klum, lum_size);
2105 ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
2107 struct ll_inode_info *lli = ll_i2info(inode);
2108 struct cl_object *obj = lli->lli_clob;
2109 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2110 struct ll_grouplock grouplock;
2115 CWARN("group id for group lock must not be 0\n");
2119 if (ll_file_nolock(file))
2120 RETURN(-EOPNOTSUPP);
2122 spin_lock(&lli->lli_lock);
2123 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
2124 CWARN("group lock already existed with gid %lu\n",
2125 fd->fd_grouplock.lg_gid);
2126 spin_unlock(&lli->lli_lock);
2129 LASSERT(fd->fd_grouplock.lg_lock == NULL);
2130 spin_unlock(&lli->lli_lock);
2133 * XXX: group lock needs to protect all OST objects while PFL
2134 * can add new OST objects during the IO, so we'd instantiate
2135 * all OST objects before getting its group lock.
2140 struct cl_layout cl = {
2141 .cl_is_composite = false,
2143 struct lu_extent ext = {
2145 .e_end = OBD_OBJECT_EOF,
2148 env = cl_env_get(&refcheck);
2150 RETURN(PTR_ERR(env));
2152 rc = cl_object_layout_get(env, obj, &cl);
2153 if (!rc && cl.cl_is_composite)
2154 rc = ll_layout_write_intent(inode, LAYOUT_INTENT_WRITE,
2157 cl_env_put(env, &refcheck);
2162 rc = cl_get_grouplock(ll_i2info(inode)->lli_clob,
2163 arg, (file->f_flags & O_NONBLOCK), &grouplock);
2167 spin_lock(&lli->lli_lock);
2168 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
2169 spin_unlock(&lli->lli_lock);
2170 CERROR("another thread just won the race\n");
2171 cl_put_grouplock(&grouplock);
2175 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
2176 fd->fd_grouplock = grouplock;
2177 spin_unlock(&lli->lli_lock);
2179 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
2183 static int ll_put_grouplock(struct inode *inode, struct file *file,
2186 struct ll_inode_info *lli = ll_i2info(inode);
2187 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2188 struct ll_grouplock grouplock;
2191 spin_lock(&lli->lli_lock);
2192 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
2193 spin_unlock(&lli->lli_lock);
2194 CWARN("no group lock held\n");
2198 LASSERT(fd->fd_grouplock.lg_lock != NULL);
2200 if (fd->fd_grouplock.lg_gid != arg) {
2201 CWARN("group lock %lu doesn't match current id %lu\n",
2202 arg, fd->fd_grouplock.lg_gid);
2203 spin_unlock(&lli->lli_lock);
2207 grouplock = fd->fd_grouplock;
2208 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
2209 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
2210 spin_unlock(&lli->lli_lock);
2212 cl_put_grouplock(&grouplock);
2213 CDEBUG(D_INFO, "group lock %lu released\n", arg);
2218 * Close inode open handle
2220 * \param dentry [in] dentry which contains the inode
2221 * \param it [in,out] intent which contains open info and result
2224 * \retval <0 failure
2226 int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
2228 struct inode *inode = dentry->d_inode;
2229 struct obd_client_handle *och;
2235 /* Root ? Do nothing. */
2236 if (dentry->d_inode->i_sb->s_root == dentry)
2239 /* No open handle to close? Move away */
2240 if (!it_disposition(it, DISP_OPEN_OPEN))
2243 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
2245 OBD_ALLOC(och, sizeof(*och));
2247 GOTO(out, rc = -ENOMEM);
2249 ll_och_fill(ll_i2sbi(inode)->ll_md_exp, it, och);
2251 rc = ll_close_inode_openhandle(inode, och, 0, NULL);
2253 /* this one is in place of ll_file_open */
2254 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
2255 ptlrpc_req_finished(it->it_request);
2256 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
2262 * Get size for inode for which FIEMAP mapping is requested.
2263 * Make the FIEMAP get_info call and returns the result.
2264 * \param fiemap kernel buffer to hold extens
2265 * \param num_bytes kernel buffer size
2267 static int ll_do_fiemap(struct inode *inode, struct fiemap *fiemap,
2273 struct ll_fiemap_info_key fmkey = { .lfik_name = KEY_FIEMAP, };
2276 /* Checks for fiemap flags */
2277 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
2278 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
2282 /* Check for FIEMAP_FLAG_SYNC */
2283 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
2284 rc = filemap_fdatawrite(inode->i_mapping);
2289 env = cl_env_get(&refcheck);
2291 RETURN(PTR_ERR(env));
2293 if (i_size_read(inode) == 0) {
2294 rc = ll_glimpse_size(inode);
2299 fmkey.lfik_oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2300 obdo_from_inode(&fmkey.lfik_oa, inode, OBD_MD_FLSIZE);
2301 obdo_set_parent_fid(&fmkey.lfik_oa, &ll_i2info(inode)->lli_fid);
2303 /* If filesize is 0, then there would be no objects for mapping */
2304 if (fmkey.lfik_oa.o_size == 0) {
2305 fiemap->fm_mapped_extents = 0;
2309 fmkey.lfik_fiemap = *fiemap;
2311 rc = cl_object_fiemap(env, ll_i2info(inode)->lli_clob,
2312 &fmkey, fiemap, &num_bytes);
2314 cl_env_put(env, &refcheck);
2318 int ll_fid2path(struct inode *inode, void __user *arg)
2320 struct obd_export *exp = ll_i2mdexp(inode);
2321 const struct getinfo_fid2path __user *gfin = arg;
2323 struct getinfo_fid2path *gfout;
2329 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2330 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2333 /* Only need to get the buflen */
2334 if (get_user(pathlen, &gfin->gf_pathlen))
2337 if (pathlen > PATH_MAX)
2340 outsize = sizeof(*gfout) + pathlen;
2341 OBD_ALLOC(gfout, outsize);
2345 if (copy_from_user(gfout, arg, sizeof(*gfout)))
2346 GOTO(gf_free, rc = -EFAULT);
2347 /* append root FID after gfout to let MDT know the root FID so that it
2348 * can lookup the correct path, this is mainly for fileset.
2349 * old server without fileset mount support will ignore this. */
2350 *gfout->gf_u.gf_root_fid = *ll_inode2fid(inode);
2352 /* Call mdc_iocontrol */
2353 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
2357 if (copy_to_user(arg, gfout, outsize))
2361 OBD_FREE(gfout, outsize);
2366 ll_ioc_data_version(struct inode *inode, struct ioc_data_version *ioc)
2368 struct cl_object *obj = ll_i2info(inode)->lli_clob;
2376 ioc->idv_version = 0;
2377 ioc->idv_layout_version = UINT_MAX;
2379 /* If no file object initialized, we consider its version is 0. */
2383 env = cl_env_get(&refcheck);
2385 RETURN(PTR_ERR(env));
2387 io = vvp_env_thread_io(env);
2389 io->u.ci_data_version.dv_data_version = 0;
2390 io->u.ci_data_version.dv_layout_version = UINT_MAX;
2391 io->u.ci_data_version.dv_flags = ioc->idv_flags;
2394 if (cl_io_init(env, io, CIT_DATA_VERSION, io->ci_obj) == 0)
2395 result = cl_io_loop(env, io);
2397 result = io->ci_result;
2399 ioc->idv_version = io->u.ci_data_version.dv_data_version;
2400 ioc->idv_layout_version = io->u.ci_data_version.dv_layout_version;
2402 cl_io_fini(env, io);
2404 if (unlikely(io->ci_need_restart))
2407 cl_env_put(env, &refcheck);
2413 * Read the data_version for inode.
2415 * This value is computed using stripe object version on OST.
2416 * Version is computed using server side locking.
2418 * @param flags if do sync on the OST side;
2420 * LL_DV_RD_FLUSH: flush dirty pages, LCK_PR on OSTs
2421 * LL_DV_WR_FLUSH: drop all caching pages, LCK_PW on OSTs
2423 int ll_data_version(struct inode *inode, __u64 *data_version, int flags)
2425 struct ioc_data_version ioc = { .idv_flags = flags };
2428 rc = ll_ioc_data_version(inode, &ioc);
2430 *data_version = ioc.idv_version;
2436 * Trigger a HSM release request for the provided inode.
2438 int ll_hsm_release(struct inode *inode)
2441 struct obd_client_handle *och = NULL;
2442 __u64 data_version = 0;
2447 CDEBUG(D_INODE, "%s: Releasing file "DFID".\n",
2448 ll_i2sbi(inode)->ll_fsname,
2449 PFID(&ll_i2info(inode)->lli_fid));
2451 och = ll_lease_open(inode, NULL, FMODE_WRITE, MDS_OPEN_RELEASE);
2453 GOTO(out, rc = PTR_ERR(och));
2455 /* Grab latest data_version and [am]time values */
2456 rc = ll_data_version(inode, &data_version, LL_DV_WR_FLUSH);
2460 env = cl_env_get(&refcheck);
2462 GOTO(out, rc = PTR_ERR(env));
2464 rc = ll_merge_attr(env, inode);
2465 cl_env_put(env, &refcheck);
2467 /* If error happen, we have the wrong size for a file.
2473 /* Release the file.
2474 * NB: lease lock handle is released in mdc_hsm_release_pack() because
2475 * we still need it to pack l_remote_handle to MDT. */
2476 rc = ll_close_inode_openhandle(inode, och, MDS_HSM_RELEASE,
2482 if (och != NULL && !IS_ERR(och)) /* close the file */
2483 ll_lease_close(och, inode, NULL);
2488 struct ll_swap_stack {
2491 struct inode *inode1;
2492 struct inode *inode2;
2497 static int ll_swap_layouts(struct file *file1, struct file *file2,
2498 struct lustre_swap_layouts *lsl)
2500 struct mdc_swap_layouts msl;
2501 struct md_op_data *op_data;
2504 struct ll_swap_stack *llss = NULL;
2507 OBD_ALLOC_PTR(llss);
2511 llss->inode1 = file_inode(file1);
2512 llss->inode2 = file_inode(file2);
2514 rc = ll_check_swap_layouts_validity(llss->inode1, llss->inode2);
2518 /* we use 2 bool because it is easier to swap than 2 bits */
2519 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV1)
2520 llss->check_dv1 = true;
2522 if (lsl->sl_flags & SWAP_LAYOUTS_CHECK_DV2)
2523 llss->check_dv2 = true;
2525 /* we cannot use lsl->sl_dvX directly because we may swap them */
2526 llss->dv1 = lsl->sl_dv1;
2527 llss->dv2 = lsl->sl_dv2;
2529 rc = lu_fid_cmp(ll_inode2fid(llss->inode1), ll_inode2fid(llss->inode2));
2530 if (rc == 0) /* same file, done! */
2533 if (rc < 0) { /* sequentialize it */
2534 swap(llss->inode1, llss->inode2);
2536 swap(llss->dv1, llss->dv2);
2537 swap(llss->check_dv1, llss->check_dv2);
2541 if (gid != 0) { /* application asks to flush dirty cache */
2542 rc = ll_get_grouplock(llss->inode1, file1, gid);
2546 rc = ll_get_grouplock(llss->inode2, file2, gid);
2548 ll_put_grouplock(llss->inode1, file1, gid);
2553 /* ultimate check, before swaping the layouts we check if
2554 * dataversion has changed (if requested) */
2555 if (llss->check_dv1) {
2556 rc = ll_data_version(llss->inode1, &dv, 0);
2559 if (dv != llss->dv1)
2560 GOTO(putgl, rc = -EAGAIN);
2563 if (llss->check_dv2) {
2564 rc = ll_data_version(llss->inode2, &dv, 0);
2567 if (dv != llss->dv2)
2568 GOTO(putgl, rc = -EAGAIN);
2571 /* struct md_op_data is used to send the swap args to the mdt
2572 * only flags is missing, so we use struct mdc_swap_layouts
2573 * through the md_op_data->op_data */
2574 /* flags from user space have to be converted before they are send to
2575 * server, no flag is sent today, they are only used on the client */
2578 op_data = ll_prep_md_op_data(NULL, llss->inode1, llss->inode2, NULL, 0,
2579 0, LUSTRE_OPC_ANY, &msl);
2580 if (IS_ERR(op_data))
2581 GOTO(free, rc = PTR_ERR(op_data));
2583 rc = obd_iocontrol(LL_IOC_LOV_SWAP_LAYOUTS, ll_i2mdexp(llss->inode1),
2584 sizeof(*op_data), op_data, NULL);
2585 ll_finish_md_op_data(op_data);
2592 ll_put_grouplock(llss->inode2, file2, gid);
2593 ll_put_grouplock(llss->inode1, file1, gid);
2603 int ll_hsm_state_set(struct inode *inode, struct hsm_state_set *hss)
2605 struct obd_export *exp = ll_i2mdexp(inode);
2606 struct md_op_data *op_data;
2610 /* Detect out-of range masks */
2611 if ((hss->hss_setmask | hss->hss_clearmask) & ~HSM_FLAGS_MASK)
2614 /* Non-root users are forbidden to set or clear flags which are
2615 * NOT defined in HSM_USER_MASK. */
2616 if (((hss->hss_setmask | hss->hss_clearmask) & ~HSM_USER_MASK) &&
2617 !cfs_capable(CFS_CAP_SYS_ADMIN))
2620 if (!exp_connect_archive_id_array(exp)) {
2621 /* Detect out-of range archive id */
2622 if ((hss->hss_valid & HSS_ARCHIVE_ID) &&
2623 (hss->hss_archive_id > LL_HSM_ORIGIN_MAX_ARCHIVE))
2627 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2628 LUSTRE_OPC_ANY, hss);
2629 if (IS_ERR(op_data))
2630 RETURN(PTR_ERR(op_data));
2632 rc = obd_iocontrol(LL_IOC_HSM_STATE_SET, exp, sizeof(*op_data),
2635 ll_finish_md_op_data(op_data);
2640 static int ll_hsm_import(struct inode *inode, struct file *file,
2641 struct hsm_user_import *hui)
2643 struct hsm_state_set *hss = NULL;
2644 struct iattr *attr = NULL;
2648 if (!S_ISREG(inode->i_mode))
2654 GOTO(out, rc = -ENOMEM);
2656 hss->hss_valid = HSS_SETMASK | HSS_ARCHIVE_ID;
2657 hss->hss_archive_id = hui->hui_archive_id;
2658 hss->hss_setmask = HS_ARCHIVED | HS_EXISTS | HS_RELEASED;
2659 rc = ll_hsm_state_set(inode, hss);
2663 OBD_ALLOC_PTR(attr);
2665 GOTO(out, rc = -ENOMEM);
2667 attr->ia_mode = hui->hui_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
2668 attr->ia_mode |= S_IFREG;
2669 attr->ia_uid = make_kuid(&init_user_ns, hui->hui_uid);
2670 attr->ia_gid = make_kgid(&init_user_ns, hui->hui_gid);
2671 attr->ia_size = hui->hui_size;
2672 attr->ia_mtime.tv_sec = hui->hui_mtime;
2673 attr->ia_mtime.tv_nsec = hui->hui_mtime_ns;
2674 attr->ia_atime.tv_sec = hui->hui_atime;
2675 attr->ia_atime.tv_nsec = hui->hui_atime_ns;
2677 attr->ia_valid = ATTR_SIZE | ATTR_MODE | ATTR_FORCE |
2678 ATTR_UID | ATTR_GID |
2679 ATTR_MTIME | ATTR_MTIME_SET |
2680 ATTR_ATIME | ATTR_ATIME_SET;
2684 rc = ll_setattr_raw(file_dentry(file), attr, 0, true);
2688 inode_unlock(inode);
2700 static inline long ll_lease_type_from_fmode(fmode_t fmode)
2702 return ((fmode & FMODE_READ) ? LL_LEASE_RDLCK : 0) |
2703 ((fmode & FMODE_WRITE) ? LL_LEASE_WRLCK : 0);
2706 static int ll_file_futimes_3(struct file *file, const struct ll_futimes_3 *lfu)
2708 struct inode *inode = file_inode(file);
2710 .ia_valid = ATTR_ATIME | ATTR_ATIME_SET |
2711 ATTR_MTIME | ATTR_MTIME_SET |
2714 .tv_sec = lfu->lfu_atime_sec,
2715 .tv_nsec = lfu->lfu_atime_nsec,
2718 .tv_sec = lfu->lfu_mtime_sec,
2719 .tv_nsec = lfu->lfu_mtime_nsec,
2722 .tv_sec = lfu->lfu_ctime_sec,
2723 .tv_nsec = lfu->lfu_ctime_nsec,
2729 if (!capable(CAP_SYS_ADMIN))
2732 if (!S_ISREG(inode->i_mode))
2736 rc = ll_setattr_raw(file_dentry(file), &ia, OP_XVALID_CTIME_SET,
2738 inode_unlock(inode);
2743 static enum cl_lock_mode cl_mode_user_to_kernel(enum lock_mode_user mode)
2746 case MODE_READ_USER:
2748 case MODE_WRITE_USER:
2755 static const char *const user_lockname[] = LOCK_MODE_NAMES;
2757 /* Used to allow the upper layers of the client to request an LDLM lock
2758 * without doing an actual read or write.
2760 * Used for ladvise lockahead to manually request specific locks.
2762 * \param[in] file file this ladvise lock request is on
2763 * \param[in] ladvise ladvise struct describing this lock request
2765 * \retval 0 success, no detailed result available (sync requests
2766 * and requests sent to the server [not handled locally]
2767 * cannot return detailed results)
2768 * \retval LLA_RESULT_{SAME,DIFFERENT} - detailed result of the lock request,
2769 * see definitions for details.
2770 * \retval negative negative errno on error
2772 int ll_file_lock_ahead(struct file *file, struct llapi_lu_ladvise *ladvise)
2774 struct lu_env *env = NULL;
2775 struct cl_io *io = NULL;
2776 struct cl_lock *lock = NULL;
2777 struct cl_lock_descr *descr = NULL;
2778 struct dentry *dentry = file->f_path.dentry;
2779 struct inode *inode = dentry->d_inode;
2780 enum cl_lock_mode cl_mode;
2781 off_t start = ladvise->lla_start;
2782 off_t end = ladvise->lla_end;
2788 CDEBUG(D_VFSTRACE, "Lock request: file=%.*s, inode=%p, mode=%s "
2789 "start=%llu, end=%llu\n", dentry->d_name.len,
2790 dentry->d_name.name, dentry->d_inode,
2791 user_lockname[ladvise->lla_lockahead_mode], (__u64) start,
2794 cl_mode = cl_mode_user_to_kernel(ladvise->lla_lockahead_mode);
2796 GOTO(out, result = cl_mode);
2798 /* Get IO environment */
2799 result = cl_io_get(inode, &env, &io, &refcheck);
2803 result = cl_io_init(env, io, CIT_MISC, io->ci_obj);
2806 * nothing to do for this io. This currently happens when
2807 * stripe sub-object's are not yet created.
2809 result = io->ci_result;
2810 } else if (result == 0) {
2811 lock = vvp_env_lock(env);
2812 descr = &lock->cll_descr;
2814 descr->cld_obj = io->ci_obj;
2815 /* Convert byte offsets to pages */
2816 descr->cld_start = cl_index(io->ci_obj, start);
2817 descr->cld_end = cl_index(io->ci_obj, end);
2818 descr->cld_mode = cl_mode;
2819 /* CEF_MUST is used because we do not want to convert a
2820 * lockahead request to a lockless lock */
2821 descr->cld_enq_flags = CEF_MUST | CEF_LOCK_NO_EXPAND |
2824 if (ladvise->lla_peradvice_flags & LF_ASYNC)
2825 descr->cld_enq_flags |= CEF_SPECULATIVE;
2827 result = cl_lock_request(env, io, lock);
2829 /* On success, we need to release the lock */
2831 cl_lock_release(env, lock);
2833 cl_io_fini(env, io);
2834 cl_env_put(env, &refcheck);
2836 /* -ECANCELED indicates a matching lock with a different extent
2837 * was already present, and -EEXIST indicates a matching lock
2838 * on exactly the same extent was already present.
2839 * We convert them to positive values for userspace to make
2840 * recognizing true errors easier.
2841 * Note we can only return these detailed results on async requests,
2842 * as sync requests look the same as i/o requests for locking. */
2843 if (result == -ECANCELED)
2844 result = LLA_RESULT_DIFFERENT;
2845 else if (result == -EEXIST)
2846 result = LLA_RESULT_SAME;
2851 static const char *const ladvise_names[] = LU_LADVISE_NAMES;
2853 static int ll_ladvise_sanity(struct inode *inode,
2854 struct llapi_lu_ladvise *ladvise)
2856 struct ll_sb_info *sbi = ll_i2sbi(inode);
2857 enum lu_ladvise_type advice = ladvise->lla_advice;
2858 /* Note the peradvice flags is a 32 bit field, so per advice flags must
2859 * be in the first 32 bits of enum ladvise_flags */
2860 __u32 flags = ladvise->lla_peradvice_flags;
2861 /* 3 lines at 80 characters per line, should be plenty */
2864 if (advice > LU_LADVISE_MAX || advice == LU_LADVISE_INVALID) {
2866 CDEBUG(D_VFSTRACE, "%s: advice with value '%d' not recognized,"
2867 "last supported advice is %s (value '%d'): rc = %d\n",
2868 sbi->ll_fsname, advice,
2869 ladvise_names[LU_LADVISE_MAX-1], LU_LADVISE_MAX-1, rc);
2873 /* Per-advice checks */
2875 case LU_LADVISE_LOCKNOEXPAND:
2876 if (flags & ~LF_LOCKNOEXPAND_MASK) {
2878 CDEBUG(D_VFSTRACE, "%s: Invalid flags (%x) for %s: "
2879 "rc = %d\n", sbi->ll_fsname, flags,
2880 ladvise_names[advice], rc);
2884 case LU_LADVISE_LOCKAHEAD:
2885 /* Currently only READ and WRITE modes can be requested */
2886 if (ladvise->lla_lockahead_mode >= MODE_MAX_USER ||
2887 ladvise->lla_lockahead_mode == 0) {
2889 CDEBUG(D_VFSTRACE, "%s: Invalid mode (%d) for %s: "
2890 "rc = %d\n", sbi->ll_fsname,
2891 ladvise->lla_lockahead_mode,
2892 ladvise_names[advice], rc);
2895 case LU_LADVISE_WILLREAD:
2896 case LU_LADVISE_DONTNEED:
2898 /* Note fall through above - These checks apply to all advices
2899 * except LOCKNOEXPAND */
2900 if (flags & ~LF_DEFAULT_MASK) {
2902 CDEBUG(D_VFSTRACE, "%s: Invalid flags (%x) for %s: "
2903 "rc = %d\n", sbi->ll_fsname, flags,
2904 ladvise_names[advice], rc);
2907 if (ladvise->lla_start >= ladvise->lla_end) {
2909 CDEBUG(D_VFSTRACE, "%s: Invalid range (%llu to %llu) "
2910 "for %s: rc = %d\n", sbi->ll_fsname,
2911 ladvise->lla_start, ladvise->lla_end,
2912 ladvise_names[advice], rc);
2924 * Give file access advices
2926 * The ladvise interface is similar to Linux fadvise() system call, except it
2927 * forwards the advices directly from Lustre client to server. The server side
2928 * codes will apply appropriate read-ahead and caching techniques for the
2929 * corresponding files.
2931 * A typical workload for ladvise is e.g. a bunch of different clients are
2932 * doing small random reads of a file, so prefetching pages into OSS cache
2933 * with big linear reads before the random IO is a net benefit. Fetching
2934 * all that data into each client cache with fadvise() may not be, due to
2935 * much more data being sent to the client.
2937 static int ll_ladvise(struct inode *inode, struct file *file, __u64 flags,
2938 struct llapi_lu_ladvise *ladvise)
2942 struct cl_ladvise_io *lio;
2947 env = cl_env_get(&refcheck);
2949 RETURN(PTR_ERR(env));
2951 io = vvp_env_thread_io(env);
2952 io->ci_obj = ll_i2info(inode)->lli_clob;
2954 /* initialize parameters for ladvise */
2955 lio = &io->u.ci_ladvise;
2956 lio->li_start = ladvise->lla_start;
2957 lio->li_end = ladvise->lla_end;
2958 lio->li_fid = ll_inode2fid(inode);
2959 lio->li_advice = ladvise->lla_advice;
2960 lio->li_flags = flags;
2962 if (cl_io_init(env, io, CIT_LADVISE, io->ci_obj) == 0)
2963 rc = cl_io_loop(env, io);
2967 cl_io_fini(env, io);
2968 cl_env_put(env, &refcheck);
2972 static int ll_lock_noexpand(struct file *file, int flags)
2974 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2976 fd->ll_lock_no_expand = !(flags & LF_UNSET);
2981 int ll_ioctl_fsgetxattr(struct inode *inode, unsigned int cmd,
2984 struct fsxattr fsxattr;
2986 if (copy_from_user(&fsxattr,
2987 (const struct fsxattr __user *)arg,
2991 fsxattr.fsx_xflags = ll_inode_flags_to_xflags(inode->i_flags);
2992 if (ll_file_test_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT))
2993 fsxattr.fsx_xflags |= FS_XFLAG_PROJINHERIT;
2994 fsxattr.fsx_projid = ll_i2info(inode)->lli_projid;
2995 if (copy_to_user((struct fsxattr __user *)arg,
2996 &fsxattr, sizeof(fsxattr)))
3002 int ll_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
3005 * Project Quota ID state is only allowed to change from within the init
3006 * namespace. Enforce that restriction only if we are trying to change
3007 * the quota ID state. Everything else is allowed in user namespaces.
3009 if (current_user_ns() == &init_user_ns)
3012 if (ll_i2info(inode)->lli_projid != fa->fsx_projid)
3015 if (ll_file_test_flag(ll_i2info(inode), LLIF_PROJECT_INHERIT)) {
3016 if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
3019 if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
3026 int ll_ioctl_fssetxattr(struct inode *inode, unsigned int cmd,
3030 struct md_op_data *op_data;
3031 struct ptlrpc_request *req = NULL;
3033 struct fsxattr fsxattr;
3034 struct cl_object *obj;
3038 if (copy_from_user(&fsxattr,
3039 (const struct fsxattr __user *)arg,
3043 rc = ll_ioctl_check_project(inode, &fsxattr);
3047 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
3048 LUSTRE_OPC_ANY, NULL);
3049 if (IS_ERR(op_data))
3050 RETURN(PTR_ERR(op_data));
3052 flags = ll_xflags_to_inode_flags(fsxattr.fsx_xflags);
3053 op_data->op_attr_flags = ll_inode_to_ext_flags(flags);
3054 if (fsxattr.fsx_xflags & FS_XFLAG_PROJINHERIT)
3055 op_data->op_attr_flags |= LUSTRE_PROJINHERIT_FL;
3056 op_data->op_projid = fsxattr.fsx_projid;
3057 op_data->op_xvalid |= OP_XVALID_PROJID | OP_XVALID_FLAGS;
3058 rc = md_setattr(ll_i2sbi(inode)->ll_md_exp, op_data, NULL,
3060 ptlrpc_req_finished(req);
3062 GOTO(out_fsxattr, rc);
3063 ll_update_inode_flags(inode, op_data->op_attr_flags);
3064 obj = ll_i2info(inode)->lli_clob;
3066 GOTO(out_fsxattr, rc);
3068 OBD_ALLOC_PTR(attr);
3070 GOTO(out_fsxattr, rc = -ENOMEM);
3072 rc = cl_setattr_ost(obj, attr, OP_XVALID_FLAGS,
3073 fsxattr.fsx_xflags);
3076 ll_finish_md_op_data(op_data);
3080 static long ll_file_unlock_lease(struct file *file, struct ll_ioc_lease *ioc,
3083 struct inode *inode = file_inode(file);
3084 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
3085 struct ll_inode_info *lli = ll_i2info(inode);
3086 struct obd_client_handle *och = NULL;
3087 struct split_param sp;
3090 enum mds_op_bias bias = 0;
3091 struct file *layout_file = NULL;
3093 size_t data_size = 0;
3097 mutex_lock(&lli->lli_och_mutex);
3098 if (fd->fd_lease_och != NULL) {
3099 och = fd->fd_lease_och;
3100 fd->fd_lease_och = NULL;
3102 mutex_unlock(&lli->lli_och_mutex);
3105 GOTO(out, rc = -ENOLCK);
3107 fmode = och->och_flags;
3109 switch (ioc->lil_flags) {
3110 case LL_LEASE_RESYNC_DONE:
3111 if (ioc->lil_count > IOC_IDS_MAX)
3112 GOTO(out, rc = -EINVAL);
3114 data_size = offsetof(typeof(*ioc), lil_ids[ioc->lil_count]);
3115 OBD_ALLOC(data, data_size);
3117 GOTO(out, rc = -ENOMEM);
3119 if (copy_from_user(data, (void __user *)arg, data_size))
3120 GOTO(out, rc = -EFAULT);
3122 bias = MDS_CLOSE_RESYNC_DONE;
3124 case LL_LEASE_LAYOUT_MERGE: {
3127 if (ioc->lil_count != 1)
3128 GOTO(out, rc = -EINVAL);
3130 arg += sizeof(*ioc);
3131 if (copy_from_user(&fd, (void __user *)arg, sizeof(__u32)))
3132 GOTO(out, rc = -EFAULT);
3134 layout_file = fget(fd);
3136 GOTO(out, rc = -EBADF);
3138 if ((file->f_flags & O_ACCMODE) == O_RDONLY ||
3139 (layout_file->f_flags & O_ACCMODE) == O_RDONLY)
3140 GOTO(out, rc = -EPERM);
3142 data = file_inode(layout_file);
3143 bias = MDS_CLOSE_LAYOUT_MERGE;
3146 case LL_LEASE_LAYOUT_SPLIT: {
3150 if (ioc->lil_count != 2)
3151 GOTO(out, rc = -EINVAL);
3153 arg += sizeof(*ioc);
3154 if (copy_from_user(&fdv, (void __user *)arg, sizeof(__u32)))
3155 GOTO(out, rc = -EFAULT);
3157 arg += sizeof(__u32);
3158 if (copy_from_user(&mirror_id, (void __user *)arg,
3160 GOTO(out, rc = -EFAULT);
3162 layout_file = fget(fdv);
3164 GOTO(out, rc = -EBADF);
3166 sp.sp_inode = file_inode(layout_file);
3167 sp.sp_mirror_id = (__u16)mirror_id;
3169 bias = MDS_CLOSE_LAYOUT_SPLIT;
3173 /* without close intent */
3177 rc = ll_lease_close_intent(och, inode, &lease_broken, bias, data);
3181 rc = ll_lease_och_release(inode, file);
3190 switch (ioc->lil_flags) {
3191 case LL_LEASE_RESYNC_DONE:
3193 OBD_FREE(data, data_size);
3195 case LL_LEASE_LAYOUT_MERGE:
3196 case LL_LEASE_LAYOUT_SPLIT:
3203 rc = ll_lease_type_from_fmode(fmode);
3207 static long ll_file_set_lease(struct file *file, struct ll_ioc_lease *ioc,
3210 struct inode *inode = file_inode(file);
3211 struct ll_inode_info *lli = ll_i2info(inode);
3212 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
3213 struct obd_client_handle *och = NULL;
3214 __u64 open_flags = 0;
3220 switch (ioc->lil_mode) {
3221 case LL_LEASE_WRLCK:
3222 if (!(file->f_mode & FMODE_WRITE))
3224 fmode = FMODE_WRITE;
3226 case LL_LEASE_RDLCK:
3227 if (!(file->f_mode & FMODE_READ))
3231 case LL_LEASE_UNLCK:
3232 RETURN(ll_file_unlock_lease(file, ioc, arg));
3237 CDEBUG(D_INODE, "Set lease with mode %u\n", fmode);
3239 /* apply for lease */
3240 if (ioc->lil_flags & LL_LEASE_RESYNC)
3241 open_flags = MDS_OPEN_RESYNC;
3242 och = ll_lease_open(inode, file, fmode, open_flags);
3244 RETURN(PTR_ERR(och));
3246 if (ioc->lil_flags & LL_LEASE_RESYNC) {
3247 rc = ll_lease_file_resync(och, inode, arg);
3249 ll_lease_close(och, inode, NULL);
3252 rc = ll_layout_refresh(inode, &fd->fd_layout_version);
3254 ll_lease_close(och, inode, NULL);
3260 mutex_lock(&lli->lli_och_mutex);
3261 if (fd->fd_lease_och == NULL) {
3262 fd->fd_lease_och = och;
3265 mutex_unlock(&lli->lli_och_mutex);
3267 /* impossible now that only excl is supported for now */
3268 ll_lease_close(och, inode, &lease_broken);
3274 static void ll_heat_get(struct inode *inode, struct lu_heat *heat)
3276 struct ll_inode_info *lli = ll_i2info(inode);
3277 struct ll_sb_info *sbi = ll_i2sbi(inode);
3278 __u64 now = ktime_get_real_seconds();
3281 spin_lock(&lli->lli_heat_lock);
3282 heat->lh_flags = lli->lli_heat_flags;
3283 for (i = 0; i < heat->lh_count; i++)
3284 heat->lh_heat[i] = obd_heat_get(&lli->lli_heat_instances[i],
3285 now, sbi->ll_heat_decay_weight,
3286 sbi->ll_heat_period_second);
3287 spin_unlock(&lli->lli_heat_lock);
3290 static int ll_heat_set(struct inode *inode, __u64 flags)
3292 struct ll_inode_info *lli = ll_i2info(inode);
3295 spin_lock(&lli->lli_heat_lock);
3296 if (flags & LU_HEAT_FLAG_CLEAR)
3297 obd_heat_clear(lli->lli_heat_instances, OBD_HEAT_COUNT);
3299 if (flags & LU_HEAT_FLAG_OFF)
3300 lli->lli_heat_flags |= LU_HEAT_FLAG_OFF;
3302 lli->lli_heat_flags &= ~LU_HEAT_FLAG_OFF;
3304 spin_unlock(&lli->lli_heat_lock);
3310 ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3312 struct inode *inode = file_inode(file);
3313 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
3317 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%x\n",
3318 PFID(ll_inode2fid(inode)), inode, cmd);
3319 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
3321 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
3322 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
3326 case LL_IOC_GETFLAGS:
3327 /* Get the current value of the file flags */
3328 return put_user(fd->fd_flags, (int __user *)arg);
3329 case LL_IOC_SETFLAGS:
3330 case LL_IOC_CLRFLAGS:
3331 /* Set or clear specific file flags */
3332 /* XXX This probably needs checks to ensure the flags are
3333 * not abused, and to handle any flag side effects.
3335 if (get_user(flags, (int __user *) arg))
3338 if (cmd == LL_IOC_SETFLAGS) {
3339 if ((flags & LL_FILE_IGNORE_LOCK) &&
3340 !(file->f_flags & O_DIRECT)) {
3341 CERROR("%s: unable to disable locking on "
3342 "non-O_DIRECT file\n", current->comm);
3346 fd->fd_flags |= flags;
3348 fd->fd_flags &= ~flags;
3351 case LL_IOC_LOV_SETSTRIPE:
3352 case LL_IOC_LOV_SETSTRIPE_NEW:
3353 RETURN(ll_lov_setstripe(inode, file, (void __user *)arg));
3354 case LL_IOC_LOV_SETEA:
3355 RETURN(ll_lov_setea(inode, file, (void __user *)arg));
3356 case LL_IOC_LOV_SWAP_LAYOUTS: {
3358 struct lustre_swap_layouts lsl;
3360 if (copy_from_user(&lsl, (char __user *)arg,
3361 sizeof(struct lustre_swap_layouts)))
3364 if ((file->f_flags & O_ACCMODE) == O_RDONLY)
3367 file2 = fget(lsl.sl_fd);
3371 /* O_WRONLY or O_RDWR */
3372 if ((file2->f_flags & O_ACCMODE) == O_RDONLY)
3373 GOTO(out, rc = -EPERM);
3375 if (lsl.sl_flags & SWAP_LAYOUTS_CLOSE) {
3376 struct inode *inode2;
3377 struct ll_inode_info *lli;
3378 struct obd_client_handle *och = NULL;
3380 lli = ll_i2info(inode);
3381 mutex_lock(&lli->lli_och_mutex);
3382 if (fd->fd_lease_och != NULL) {
3383 och = fd->fd_lease_och;
3384 fd->fd_lease_och = NULL;
3386 mutex_unlock(&lli->lli_och_mutex);
3388 GOTO(out, rc = -ENOLCK);
3389 inode2 = file_inode(file2);
3390 rc = ll_swap_layouts_close(och, inode, inode2);
3392 rc = ll_swap_layouts(file, file2, &lsl);
3398 case LL_IOC_LOV_GETSTRIPE:
3399 case LL_IOC_LOV_GETSTRIPE_NEW:
3400 RETURN(ll_file_getstripe(inode, (void __user *)arg, 0));
3401 case FS_IOC_GETFLAGS:
3402 case FS_IOC_SETFLAGS:
3403 RETURN(ll_iocontrol(inode, file, cmd, arg));
3404 case FSFILT_IOC_GETVERSION:
3405 case FS_IOC_GETVERSION:
3406 RETURN(put_user(inode->i_generation, (int __user *)arg));
3407 /* We need to special case any other ioctls we want to handle,
3408 * to send them to the MDS/OST as appropriate and to properly
3409 * network encode the arg field. */
3410 case FS_IOC_SETVERSION:
3413 case LL_IOC_GROUP_LOCK:
3414 RETURN(ll_get_grouplock(inode, file, arg));
3415 case LL_IOC_GROUP_UNLOCK:
3416 RETURN(ll_put_grouplock(inode, file, arg));
3417 case IOC_OBD_STATFS:
3418 RETURN(ll_obd_statfs(inode, (void __user *)arg));
3420 case LL_IOC_FLUSHCTX:
3421 RETURN(ll_flush_ctx(inode));
3422 case LL_IOC_PATH2FID: {
3423 if (copy_to_user((void __user *)arg, ll_inode2fid(inode),
3424 sizeof(struct lu_fid)))
3429 case LL_IOC_GETPARENT:
3430 RETURN(ll_getparent(file, (struct getparent __user *)arg));
3432 case OBD_IOC_FID2PATH:
3433 RETURN(ll_fid2path(inode, (void __user *)arg));
3434 case LL_IOC_DATA_VERSION: {
3435 struct ioc_data_version idv;
3438 if (copy_from_user(&idv, (char __user *)arg, sizeof(idv)))
3441 idv.idv_flags &= LL_DV_RD_FLUSH | LL_DV_WR_FLUSH;
3442 rc = ll_ioc_data_version(inode, &idv);
3445 copy_to_user((char __user *)arg, &idv, sizeof(idv)))
3451 case LL_IOC_GET_MDTIDX: {
3454 mdtidx = ll_get_mdt_idx(inode);
3458 if (put_user((int)mdtidx, (int __user *)arg))
3463 case OBD_IOC_GETDTNAME:
3464 case OBD_IOC_GETMDNAME:
3465 RETURN(ll_get_obd_name(inode, cmd, arg));
3466 case LL_IOC_HSM_STATE_GET: {
3467 struct md_op_data *op_data;
3468 struct hsm_user_state *hus;
3475 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
3476 LUSTRE_OPC_ANY, hus);
3477 if (IS_ERR(op_data)) {
3479 RETURN(PTR_ERR(op_data));
3482 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
3485 if (copy_to_user((void __user *)arg, hus, sizeof(*hus)))
3488 ll_finish_md_op_data(op_data);
3492 case LL_IOC_HSM_STATE_SET: {
3493 struct hsm_state_set *hss;
3500 if (copy_from_user(hss, (char __user *)arg, sizeof(*hss))) {
3505 rc = ll_hsm_state_set(inode, hss);
3510 case LL_IOC_HSM_ACTION: {
3511 struct md_op_data *op_data;
3512 struct hsm_current_action *hca;
3519 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
3520 LUSTRE_OPC_ANY, hca);
3521 if (IS_ERR(op_data)) {
3523 RETURN(PTR_ERR(op_data));
3526 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), sizeof(*op_data),
3529 if (copy_to_user((char __user *)arg, hca, sizeof(*hca)))
3532 ll_finish_md_op_data(op_data);
3536 case LL_IOC_SET_LEASE_OLD: {
3537 struct ll_ioc_lease ioc = { .lil_mode = (__u32)arg };
3539 RETURN(ll_file_set_lease(file, &ioc, 0));
3541 case LL_IOC_SET_LEASE: {
3542 struct ll_ioc_lease ioc;
3544 if (copy_from_user(&ioc, (void __user *)arg, sizeof(ioc)))
3547 RETURN(ll_file_set_lease(file, &ioc, arg));
3549 case LL_IOC_GET_LEASE: {
3550 struct ll_inode_info *lli = ll_i2info(inode);
3551 struct ldlm_lock *lock = NULL;
3554 mutex_lock(&lli->lli_och_mutex);
3555 if (fd->fd_lease_och != NULL) {
3556 struct obd_client_handle *och = fd->fd_lease_och;
3558 lock = ldlm_handle2lock(&och->och_lease_handle);
3560 lock_res_and_lock(lock);
3561 if (!ldlm_is_cancel(lock))
3562 fmode = och->och_flags;
3564 unlock_res_and_lock(lock);
3565 LDLM_LOCK_PUT(lock);
3568 mutex_unlock(&lli->lli_och_mutex);
3570 RETURN(ll_lease_type_from_fmode(fmode));
3572 case LL_IOC_HSM_IMPORT: {
3573 struct hsm_user_import *hui;
3579 if (copy_from_user(hui, (void __user *)arg, sizeof(*hui))) {
3584 rc = ll_hsm_import(inode, file, hui);
3589 case LL_IOC_FUTIMES_3: {
3590 struct ll_futimes_3 lfu;
3592 if (copy_from_user(&lfu,
3593 (const struct ll_futimes_3 __user *)arg,
3597 RETURN(ll_file_futimes_3(file, &lfu));
3599 case LL_IOC_LADVISE: {
3600 struct llapi_ladvise_hdr *k_ladvise_hdr;
3601 struct llapi_ladvise_hdr __user *u_ladvise_hdr;
3604 int alloc_size = sizeof(*k_ladvise_hdr);
3607 u_ladvise_hdr = (void __user *)arg;
3608 OBD_ALLOC_PTR(k_ladvise_hdr);
3609 if (k_ladvise_hdr == NULL)
3612 if (copy_from_user(k_ladvise_hdr, u_ladvise_hdr, alloc_size))
3613 GOTO(out_ladvise, rc = -EFAULT);
3615 if (k_ladvise_hdr->lah_magic != LADVISE_MAGIC ||
3616 k_ladvise_hdr->lah_count < 1)
3617 GOTO(out_ladvise, rc = -EINVAL);
3619 num_advise = k_ladvise_hdr->lah_count;
3620 if (num_advise >= LAH_COUNT_MAX)
3621 GOTO(out_ladvise, rc = -EFBIG);
3623 OBD_FREE_PTR(k_ladvise_hdr);
3624 alloc_size = offsetof(typeof(*k_ladvise_hdr),
3625 lah_advise[num_advise]);
3626 OBD_ALLOC(k_ladvise_hdr, alloc_size);
3627 if (k_ladvise_hdr == NULL)
3631 * TODO: submit multiple advices to one server in a single RPC
3633 if (copy_from_user(k_ladvise_hdr, u_ladvise_hdr, alloc_size))
3634 GOTO(out_ladvise, rc = -EFAULT);
3636 for (i = 0; i < num_advise; i++) {
3637 struct llapi_lu_ladvise *k_ladvise =
3638 &k_ladvise_hdr->lah_advise[i];
3639 struct llapi_lu_ladvise __user *u_ladvise =
3640 &u_ladvise_hdr->lah_advise[i];
3642 rc = ll_ladvise_sanity(inode, k_ladvise);
3644 GOTO(out_ladvise, rc);
3646 switch (k_ladvise->lla_advice) {
3647 case LU_LADVISE_LOCKNOEXPAND:
3648 rc = ll_lock_noexpand(file,
3649 k_ladvise->lla_peradvice_flags);
3650 GOTO(out_ladvise, rc);
3651 case LU_LADVISE_LOCKAHEAD:
3653 rc = ll_file_lock_ahead(file, k_ladvise);
3656 GOTO(out_ladvise, rc);
3659 &u_ladvise->lla_lockahead_result))
3660 GOTO(out_ladvise, rc = -EFAULT);
3663 rc = ll_ladvise(inode, file,
3664 k_ladvise_hdr->lah_flags,
3667 GOTO(out_ladvise, rc);
3674 OBD_FREE(k_ladvise_hdr, alloc_size);
3677 case LL_IOC_FLR_SET_MIRROR: {
3678 /* mirror I/O must be direct to avoid polluting page cache
3680 if (!(file->f_flags & O_DIRECT))
3683 fd->fd_designated_mirror = (__u32)arg;
3686 case LL_IOC_FSGETXATTR:
3687 RETURN(ll_ioctl_fsgetxattr(inode, cmd, arg));
3688 case LL_IOC_FSSETXATTR:
3689 RETURN(ll_ioctl_fssetxattr(inode, cmd, arg));
3691 RETURN(put_user(PAGE_SIZE, (int __user *)arg));
3692 case LL_IOC_HEAT_GET: {
3693 struct lu_heat uheat;
3694 struct lu_heat *heat;
3697 if (copy_from_user(&uheat, (void __user *)arg, sizeof(uheat)))
3700 if (uheat.lh_count > OBD_HEAT_COUNT)
3701 uheat.lh_count = OBD_HEAT_COUNT;
3703 size = offsetof(typeof(uheat), lh_heat[uheat.lh_count]);
3704 OBD_ALLOC(heat, size);
3708 heat->lh_count = uheat.lh_count;
3709 ll_heat_get(inode, heat);
3710 rc = copy_to_user((char __user *)arg, heat, size);
3711 OBD_FREE(heat, size);
3712 RETURN(rc ? -EFAULT : 0);
3714 case LL_IOC_HEAT_SET: {
3717 if (copy_from_user(&flags, (void __user *)arg, sizeof(flags)))
3720 rc = ll_heat_set(inode, flags);
3724 RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
3725 (void __user *)arg));
3729 #ifndef HAVE_FILE_LLSEEK_SIZE
3730 static inline loff_t
3731 llseek_execute(struct file *file, loff_t offset, loff_t maxsize)
3733 if (offset < 0 && !(file->f_mode & FMODE_UNSIGNED_OFFSET))
3735 if (offset > maxsize)
3738 if (offset != file->f_pos) {
3739 file->f_pos = offset;
3740 file->f_version = 0;
3746 generic_file_llseek_size(struct file *file, loff_t offset, int origin,
3747 loff_t maxsize, loff_t eof)
3749 struct inode *inode = file_inode(file);
3757 * Here we special-case the lseek(fd, 0, SEEK_CUR)
3758 * position-querying operation. Avoid rewriting the "same"
3759 * f_pos value back to the file because a concurrent read(),
3760 * write() or lseek() might have altered it
3765 * f_lock protects against read/modify/write race with other
3766 * SEEK_CURs. Note that parallel writes and reads behave
3770 offset = llseek_execute(file, file->f_pos + offset, maxsize);
3771 inode_unlock(inode);
3775 * In the generic case the entire file is data, so as long as
3776 * offset isn't at the end of the file then the offset is data.
3783 * There is a virtual hole at the end of the file, so as long as
3784 * offset isn't i_size or larger, return i_size.
3792 return llseek_execute(file, offset, maxsize);
3796 static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
3798 struct inode *inode = file_inode(file);
3799 loff_t retval, eof = 0;
3802 retval = offset + ((origin == SEEK_END) ? i_size_read(inode) :
3803 (origin == SEEK_CUR) ? file->f_pos : 0);
3804 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), to=%llu=%#llx(%d)\n",
3805 PFID(ll_inode2fid(inode)), inode, retval, retval,
3807 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
3809 if (origin == SEEK_END || origin == SEEK_HOLE || origin == SEEK_DATA) {
3810 retval = ll_glimpse_size(inode);
3813 eof = i_size_read(inode);
3816 retval = ll_generic_file_llseek_size(file, offset, origin,
3817 ll_file_maxbytes(inode), eof);
3821 static int ll_flush(struct file *file, fl_owner_t id)
3823 struct inode *inode = file_inode(file);
3824 struct ll_inode_info *lli = ll_i2info(inode);
3825 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
3828 LASSERT(!S_ISDIR(inode->i_mode));
3830 /* catch async errors that were recorded back when async writeback
3831 * failed for pages in this mapping. */
3832 rc = lli->lli_async_rc;
3833 lli->lli_async_rc = 0;
3834 if (lli->lli_clob != NULL) {
3835 err = lov_read_and_clear_async_rc(lli->lli_clob);
3840 /* The application has been told write failure already.
3841 * Do not report failure again. */
3842 if (fd->fd_write_failed)
3844 return rc ? -EIO : 0;
3848 * Called to make sure a portion of file has been written out.
3849 * if @mode is not CL_FSYNC_LOCAL, it will send OST_SYNC RPCs to OST.
3851 * Return how many pages have been written.
3853 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
3854 enum cl_fsync_mode mode, int ignore_layout)
3858 struct cl_fsync_io *fio;
3863 if (mode != CL_FSYNC_NONE && mode != CL_FSYNC_LOCAL &&
3864 mode != CL_FSYNC_DISCARD && mode != CL_FSYNC_ALL)
3867 env = cl_env_get(&refcheck);
3869 RETURN(PTR_ERR(env));
3871 io = vvp_env_thread_io(env);
3872 io->ci_obj = ll_i2info(inode)->lli_clob;
3873 io->ci_ignore_layout = ignore_layout;
3875 /* initialize parameters for sync */
3876 fio = &io->u.ci_fsync;
3877 fio->fi_start = start;
3879 fio->fi_fid = ll_inode2fid(inode);
3880 fio->fi_mode = mode;
3881 fio->fi_nr_written = 0;
3883 if (cl_io_init(env, io, CIT_FSYNC, io->ci_obj) == 0)
3884 result = cl_io_loop(env, io);
3886 result = io->ci_result;
3888 result = fio->fi_nr_written;
3889 cl_io_fini(env, io);
3890 cl_env_put(env, &refcheck);
3896 * When dentry is provided (the 'else' case), file_dentry() may be
3897 * null and dentry must be used directly rather than pulled from
3898 * file_dentry() as is done otherwise.
3901 #ifdef HAVE_FILE_FSYNC_4ARGS
3902 int ll_fsync(struct file *file, loff_t start, loff_t end, int datasync)
3904 struct dentry *dentry = file_dentry(file);
3905 #elif defined(HAVE_FILE_FSYNC_2ARGS)
3906 int ll_fsync(struct file *file, int datasync)
3908 struct dentry *dentry = file_dentry(file);
3910 loff_t end = LLONG_MAX;
3912 int ll_fsync(struct file *file, struct dentry *dentry, int datasync)
3915 loff_t end = LLONG_MAX;
3917 struct inode *inode = dentry->d_inode;
3918 struct ll_inode_info *lli = ll_i2info(inode);
3919 struct ptlrpc_request *req;
3923 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
3924 PFID(ll_inode2fid(inode)), inode);
3925 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
3927 #ifdef HAVE_FILE_FSYNC_4ARGS
3928 rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
3931 /* fsync's caller has already called _fdata{sync,write}, we want
3932 * that IO to finish before calling the osc and mdc sync methods */
3933 rc = filemap_fdatawait(inode->i_mapping);
3936 /* catch async errors that were recorded back when async writeback
3937 * failed for pages in this mapping. */
3938 if (!S_ISDIR(inode->i_mode)) {
3939 err = lli->lli_async_rc;
3940 lli->lli_async_rc = 0;
3943 if (lli->lli_clob != NULL) {
3944 err = lov_read_and_clear_async_rc(lli->lli_clob);
3950 err = md_fsync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), &req);
3954 ptlrpc_req_finished(req);
3956 if (S_ISREG(inode->i_mode)) {
3957 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
3959 err = cl_sync_file_range(inode, start, end, CL_FSYNC_ALL, 0);
3960 if (rc == 0 && err < 0)
3963 fd->fd_write_failed = true;
3965 fd->fd_write_failed = false;
3968 #ifdef HAVE_FILE_FSYNC_4ARGS
3969 inode_unlock(inode);
3975 ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
3977 struct inode *inode = file_inode(file);
3978 struct ll_sb_info *sbi = ll_i2sbi(inode);
3979 struct ldlm_enqueue_info einfo = {
3980 .ei_type = LDLM_FLOCK,
3981 .ei_cb_cp = ldlm_flock_completion_ast,
3982 .ei_cbdata = file_lock,
3984 struct md_op_data *op_data;
3985 struct lustre_handle lockh = { 0 };
3986 union ldlm_policy_data flock = { { 0 } };
3987 int fl_type = file_lock->fl_type;
3993 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID" file_lock=%p\n",
3994 PFID(ll_inode2fid(inode)), file_lock);
3996 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
3998 if (file_lock->fl_flags & FL_FLOCK) {
3999 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
4000 /* flocks are whole-file locks */
4001 flock.l_flock.end = OFFSET_MAX;
4002 /* For flocks owner is determined by the local file desctiptor*/
4003 flock.l_flock.owner = (unsigned long)file_lock->fl_file;
4004 } else if (file_lock->fl_flags & FL_POSIX) {
4005 flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
4006 flock.l_flock.start = file_lock->fl_start;
4007 flock.l_flock.end = file_lock->fl_end;
4011 flock.l_flock.pid = file_lock->fl_pid;
4013 /* Somewhat ugly workaround for svc lockd.
4014 * lockd installs custom fl_lmops->lm_compare_owner that checks
4015 * for the fl_owner to be the same (which it always is on local node
4016 * I guess between lockd processes) and then compares pid.
4017 * As such we assign pid to the owner field to make it all work,
4018 * conflict with normal locks is unlikely since pid space and
4019 * pointer space for current->files are not intersecting */
4020 if (file_lock->fl_lmops && file_lock->fl_lmops->lm_compare_owner)
4021 flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
4025 einfo.ei_mode = LCK_PR;
4028 /* An unlock request may or may not have any relation to
4029 * existing locks so we may not be able to pass a lock handle
4030 * via a normal ldlm_lock_cancel() request. The request may even
4031 * unlock a byte range in the middle of an existing lock. In
4032 * order to process an unlock request we need all of the same
4033 * information that is given with a normal read or write record
4034 * lock request. To avoid creating another ldlm unlock (cancel)
4035 * message we'll treat a LCK_NL flock request as an unlock. */
4036 einfo.ei_mode = LCK_NL;
4039 einfo.ei_mode = LCK_PW;
4042 CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n", fl_type);
4057 flags = LDLM_FL_BLOCK_NOWAIT;
4063 flags = LDLM_FL_TEST_LOCK;
4066 CERROR("unknown fcntl lock command: %d\n", cmd);
4070 /* Save the old mode so that if the mode in the lock changes we
4071 * can decrement the appropriate reader or writer refcount. */
4072 file_lock->fl_type = einfo.ei_mode;
4074 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
4075 LUSTRE_OPC_ANY, NULL);
4076 if (IS_ERR(op_data))
4077 RETURN(PTR_ERR(op_data));
4079 CDEBUG(D_DLMTRACE, "inode="DFID", pid=%u, flags=%#llx, mode=%u, "
4080 "start=%llu, end=%llu\n", PFID(ll_inode2fid(inode)),
4081 flock.l_flock.pid, flags, einfo.ei_mode,
4082 flock.l_flock.start, flock.l_flock.end);
4084 rc = md_enqueue(sbi->ll_md_exp, &einfo, &flock, op_data, &lockh,
4087 /* Restore the file lock type if not TEST lock. */
4088 if (!(flags & LDLM_FL_TEST_LOCK))
4089 file_lock->fl_type = fl_type;
4091 #ifdef HAVE_LOCKS_LOCK_FILE_WAIT
4092 if ((rc == 0 || file_lock->fl_type == F_UNLCK) &&
4093 !(flags & LDLM_FL_TEST_LOCK))
4094 rc2 = locks_lock_file_wait(file, file_lock);
4096 if ((file_lock->fl_flags & FL_FLOCK) &&
4097 (rc == 0 || file_lock->fl_type == F_UNLCK))
4098 rc2 = flock_lock_file_wait(file, file_lock);
4099 if ((file_lock->fl_flags & FL_POSIX) &&
4100 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
4101 !(flags & LDLM_FL_TEST_LOCK))
4102 rc2 = posix_lock_file_wait(file, file_lock);
4103 #endif /* HAVE_LOCKS_LOCK_FILE_WAIT */
4105 if (rc2 && file_lock->fl_type != F_UNLCK) {
4106 einfo.ei_mode = LCK_NL;
4107 md_enqueue(sbi->ll_md_exp, &einfo, &flock, op_data,
4112 ll_finish_md_op_data(op_data);
4117 int ll_get_fid_by_name(struct inode *parent, const char *name,
4118 int namelen, struct lu_fid *fid,
4119 struct inode **inode)
4121 struct md_op_data *op_data = NULL;
4122 struct mdt_body *body;
4123 struct ptlrpc_request *req;
4127 op_data = ll_prep_md_op_data(NULL, parent, NULL, name, namelen, 0,
4128 LUSTRE_OPC_ANY, NULL);
4129 if (IS_ERR(op_data))
4130 RETURN(PTR_ERR(op_data));
4132 op_data->op_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
4133 rc = md_getattr_name(ll_i2sbi(parent)->ll_md_exp, op_data, &req);
4134 ll_finish_md_op_data(op_data);
4138 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
4140 GOTO(out_req, rc = -EFAULT);
4142 *fid = body->mbo_fid1;
4145 rc = ll_prep_inode(inode, req, parent->i_sb, NULL);
4147 ptlrpc_req_finished(req);
4151 int ll_migrate(struct inode *parent, struct file *file, struct lmv_user_md *lum,
4154 struct dentry *dchild = NULL;
4155 struct inode *child_inode = NULL;
4156 struct md_op_data *op_data;
4157 struct ptlrpc_request *request = NULL;
4158 struct obd_client_handle *och = NULL;
4160 struct mdt_body *body;
4161 __u64 data_version = 0;
4162 size_t namelen = strlen(name);
4163 int lumlen = lmv_user_md_size(lum->lum_stripe_count, lum->lum_magic);
4167 CDEBUG(D_VFSTRACE, "migrate "DFID"/%s to MDT%04x stripe count %d\n",
4168 PFID(ll_inode2fid(parent)), name,
4169 lum->lum_stripe_offset, lum->lum_stripe_count);
4171 if (lum->lum_magic != cpu_to_le32(LMV_USER_MAGIC) &&
4172 lum->lum_magic != cpu_to_le32(LMV_USER_MAGIC_SPECIFIC))
4173 lustre_swab_lmv_user_md(lum);
4175 /* Get child FID first */
4176 qstr.hash = ll_full_name_hash(file_dentry(file), name, namelen);
4179 dchild = d_lookup(file_dentry(file), &qstr);
4181 if (dchild->d_inode)
4182 child_inode = igrab(dchild->d_inode);
4187 rc = ll_get_fid_by_name(parent, name, namelen, NULL,
4196 if (!(exp_connect_flags2(ll_i2sbi(parent)->ll_md_exp) &
4197 OBD_CONNECT2_DIR_MIGRATE)) {
4198 if (le32_to_cpu(lum->lum_stripe_count) > 1 ||
4199 ll_i2info(child_inode)->lli_lsm_md) {
4200 CERROR("%s: MDT doesn't support stripe directory "
4201 "migration!\n", ll_i2sbi(parent)->ll_fsname);
4202 GOTO(out_iput, rc = -EOPNOTSUPP);
4207 * lfs migrate command needs to be blocked on the client
4208 * by checking the migrate FID against the FID of the
4211 if (child_inode == parent->i_sb->s_root->d_inode)
4212 GOTO(out_iput, rc = -EINVAL);
4214 op_data = ll_prep_md_op_data(NULL, parent, NULL, name, namelen,
4215 child_inode->i_mode, LUSTRE_OPC_ANY, NULL);
4216 if (IS_ERR(op_data))
4217 GOTO(out_iput, rc = PTR_ERR(op_data));
4219 inode_lock(child_inode);
4220 op_data->op_fid3 = *ll_inode2fid(child_inode);
4221 if (!fid_is_sane(&op_data->op_fid3)) {
4222 CERROR("%s: migrate %s, but FID "DFID" is insane\n",
4223 ll_i2sbi(parent)->ll_fsname, name,
4224 PFID(&op_data->op_fid3));
4225 GOTO(out_unlock, rc = -EINVAL);
4228 op_data->op_cli_flags |= CLI_MIGRATE | CLI_SET_MEA;
4229 op_data->op_data = lum;
4230 op_data->op_data_size = lumlen;
4233 if (S_ISREG(child_inode->i_mode)) {
4234 och = ll_lease_open(child_inode, NULL, FMODE_WRITE, 0);
4238 GOTO(out_unlock, rc);
4241 rc = ll_data_version(child_inode, &data_version,
4244 GOTO(out_close, rc);
4246 op_data->op_open_handle = och->och_open_handle;
4247 op_data->op_data_version = data_version;
4248 op_data->op_lease_handle = och->och_lease_handle;
4249 op_data->op_bias |= MDS_CLOSE_MIGRATE;
4251 spin_lock(&och->och_mod->mod_open_req->rq_lock);
4252 och->och_mod->mod_open_req->rq_replay = 0;
4253 spin_unlock(&och->och_mod->mod_open_req->rq_lock);
4256 rc = md_rename(ll_i2sbi(parent)->ll_md_exp, op_data, name, namelen,
4257 name, namelen, &request);
4259 LASSERT(request != NULL);
4260 ll_update_times(request, parent);
4263 if (rc == 0 || rc == -EAGAIN) {
4264 body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
4265 LASSERT(body != NULL);
4267 /* If the server does release layout lock, then we cleanup
4268 * the client och here, otherwise release it in out_close: */
4269 if (och && body->mbo_valid & OBD_MD_CLOSE_INTENT_EXECED) {
4270 obd_mod_put(och->och_mod);
4271 md_clear_open_replay_data(ll_i2sbi(parent)->ll_md_exp,
4273 och->och_open_handle.cookie = DEAD_HANDLE_MAGIC;
4279 if (request != NULL) {
4280 ptlrpc_req_finished(request);
4284 /* Try again if the lease has cancelled. */
4285 if (rc == -EAGAIN && S_ISREG(child_inode->i_mode))
4290 ll_lease_close(och, child_inode, NULL);
4292 clear_nlink(child_inode);
4294 inode_unlock(child_inode);
4295 ll_finish_md_op_data(op_data);
4302 ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
4310 * test if some locks matching bits and l_req_mode are acquired
4311 * - bits can be in different locks
4312 * - if found clear the common lock bits in *bits
4313 * - the bits not found, are kept in *bits
4315 * \param bits [IN] searched lock bits [IN]
4316 * \param l_req_mode [IN] searched lock mode
4317 * \retval boolean, true iff all bits are found
4319 int ll_have_md_lock(struct inode *inode, __u64 *bits, enum ldlm_mode l_req_mode)
4321 struct lustre_handle lockh;
4322 union ldlm_policy_data policy;
4323 enum ldlm_mode mode = (l_req_mode == LCK_MINMODE) ?
4324 (LCK_CR | LCK_CW | LCK_PR | LCK_PW) : l_req_mode;
4333 fid = &ll_i2info(inode)->lli_fid;
4334 CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
4335 ldlm_lockname[mode]);
4337 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
4338 for (i = 0; i <= MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
4339 policy.l_inodebits.bits = *bits & (1 << i);
4340 if (policy.l_inodebits.bits == 0)
4343 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
4344 &policy, mode, &lockh)) {
4345 struct ldlm_lock *lock;
4347 lock = ldlm_handle2lock(&lockh);
4350 ~(lock->l_policy_data.l_inodebits.bits);
4351 LDLM_LOCK_PUT(lock);
4353 *bits &= ~policy.l_inodebits.bits;
4360 enum ldlm_mode ll_take_md_lock(struct inode *inode, __u64 bits,
4361 struct lustre_handle *lockh, __u64 flags,
4362 enum ldlm_mode mode)
4364 union ldlm_policy_data policy = { .l_inodebits = { bits } };
4369 fid = &ll_i2info(inode)->lli_fid;
4370 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
4372 rc = md_lock_match(ll_i2mdexp(inode), LDLM_FL_BLOCK_GRANTED|flags,
4373 fid, LDLM_IBITS, &policy, mode, lockh);
4378 static int ll_inode_revalidate_fini(struct inode *inode, int rc)
4380 /* Already unlinked. Just update nlink and return success */
4381 if (rc == -ENOENT) {
4383 /* If it is striped directory, and there is bad stripe
4384 * Let's revalidate the dentry again, instead of returning
4386 if (S_ISDIR(inode->i_mode) &&
4387 ll_i2info(inode)->lli_lsm_md != NULL)
4390 /* This path cannot be hit for regular files unless in
4391 * case of obscure races, so no need to to validate
4393 if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
4395 } else if (rc != 0) {
4396 CDEBUG_LIMIT((rc == -EACCES || rc == -EIDRM) ? D_INFO : D_ERROR,
4397 "%s: revalidate FID "DFID" error: rc = %d\n",
4398 ll_i2sbi(inode)->ll_fsname,
4399 PFID(ll_inode2fid(inode)), rc);
4405 static int ll_inode_revalidate(struct dentry *dentry, enum ldlm_intent_flags op)
4407 struct inode *inode = dentry->d_inode;
4408 struct obd_export *exp = ll_i2mdexp(inode);
4409 struct lookup_intent oit = {
4412 struct ptlrpc_request *req = NULL;
4413 struct md_op_data *op_data;
4417 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p),name=%s\n",
4418 PFID(ll_inode2fid(inode)), inode, dentry->d_name.name);
4420 /* Call getattr by fid, so do not provide name at all. */
4421 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
4422 LUSTRE_OPC_ANY, NULL);
4423 if (IS_ERR(op_data))
4424 RETURN(PTR_ERR(op_data));
4426 rc = md_intent_lock(exp, op_data, &oit, &req, &ll_md_blocking_ast, 0);
4427 ll_finish_md_op_data(op_data);
4429 rc = ll_inode_revalidate_fini(inode, rc);
4433 rc = ll_revalidate_it_finish(req, &oit, dentry);
4435 ll_intent_release(&oit);
4439 /* Unlinked? Unhash dentry, so it is not picked up later by
4440 * do_lookup() -> ll_revalidate_it(). We cannot use d_drop
4441 * here to preserve get_cwd functionality on 2.6.
4443 if (!dentry->d_inode->i_nlink) {
4444 ll_lock_dcache(inode);
4445 d_lustre_invalidate(dentry, 0);
4446 ll_unlock_dcache(inode);
4449 ll_lookup_finish_locks(&oit, dentry);
4451 ptlrpc_req_finished(req);
4456 static int ll_merge_md_attr(struct inode *inode)
4458 struct ll_inode_info *lli = ll_i2info(inode);
4459 struct cl_attr attr = { 0 };
4462 LASSERT(lli->lli_lsm_md != NULL);
4463 down_read(&lli->lli_lsm_sem);
4464 rc = md_merge_attr(ll_i2mdexp(inode), ll_i2info(inode)->lli_lsm_md,
4465 &attr, ll_md_blocking_ast);
4466 up_read(&lli->lli_lsm_sem);
4470 set_nlink(inode, attr.cat_nlink);
4471 inode->i_blocks = attr.cat_blocks;
4472 i_size_write(inode, attr.cat_size);
4474 ll_i2info(inode)->lli_atime = attr.cat_atime;
4475 ll_i2info(inode)->lli_mtime = attr.cat_mtime;
4476 ll_i2info(inode)->lli_ctime = attr.cat_ctime;
4481 static inline dev_t ll_compat_encode_dev(dev_t dev)
4483 /* The compat_sys_*stat*() syscalls will fail unless the
4484 * device majors and minors are both less than 256. Note that
4485 * the value returned here will be passed through
4486 * old_encode_dev() in cp_compat_stat(). And so we are not
4487 * trying to return a valid compat (u16) device number, just
4488 * one that will pass the old_valid_dev() check. */
4490 return MKDEV(MAJOR(dev) & 0xff, MINOR(dev) & 0xff);
4493 #ifdef HAVE_INODEOPS_ENHANCED_GETATTR
4494 int ll_getattr(const struct path *path, struct kstat *stat,
4495 u32 request_mask, unsigned int flags)
4497 struct dentry *de = path->dentry;
4499 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
4502 struct inode *inode = de->d_inode;
4503 struct ll_sb_info *sbi = ll_i2sbi(inode);
4504 struct ll_inode_info *lli = ll_i2info(inode);
4507 ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
4509 rc = ll_inode_revalidate(de, IT_GETATTR);
4513 if (S_ISREG(inode->i_mode)) {
4514 /* In case of restore, the MDT has the right size and has
4515 * already send it back without granting the layout lock,
4516 * inode is up-to-date so glimpse is useless.
4517 * Also to glimpse we need the layout, in case of a running
4518 * restore the MDT holds the layout lock so the glimpse will
4519 * block up to the end of restore (getattr will block)
4521 if (!ll_file_test_flag(lli, LLIF_FILE_RESTORING)) {
4522 rc = ll_glimpse_size(inode);
4527 /* If object isn't regular a file then don't validate size. */
4528 if (S_ISDIR(inode->i_mode) &&
4529 lli->lli_lsm_md != NULL) {
4530 rc = ll_merge_md_attr(inode);
4535 inode->i_atime.tv_sec = lli->lli_atime;
4536 inode->i_mtime.tv_sec = lli->lli_mtime;
4537 inode->i_ctime.tv_sec = lli->lli_ctime;
4540 OBD_FAIL_TIMEOUT(OBD_FAIL_GETATTR_DELAY, 30);
4542 if (ll_need_32bit_api(sbi)) {
4543 stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
4544 stat->dev = ll_compat_encode_dev(inode->i_sb->s_dev);
4545 stat->rdev = ll_compat_encode_dev(inode->i_rdev);
4547 stat->ino = inode->i_ino;
4548 stat->dev = inode->i_sb->s_dev;
4549 stat->rdev = inode->i_rdev;
4552 stat->mode = inode->i_mode;
4553 stat->uid = inode->i_uid;
4554 stat->gid = inode->i_gid;
4555 stat->atime = inode->i_atime;
4556 stat->mtime = inode->i_mtime;
4557 stat->ctime = inode->i_ctime;
4558 stat->blksize = sbi->ll_stat_blksize ?: 1 << inode->i_blkbits;
4560 stat->nlink = inode->i_nlink;
4561 stat->size = i_size_read(inode);
4562 stat->blocks = inode->i_blocks;
4567 static int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
4568 __u64 start, __u64 len)
4572 struct fiemap *fiemap;
4573 unsigned int extent_count = fieinfo->fi_extents_max;
4575 num_bytes = sizeof(*fiemap) + (extent_count *
4576 sizeof(struct fiemap_extent));
4577 OBD_ALLOC_LARGE(fiemap, num_bytes);
4582 fiemap->fm_flags = fieinfo->fi_flags;
4583 fiemap->fm_extent_count = fieinfo->fi_extents_max;
4584 fiemap->fm_start = start;
4585 fiemap->fm_length = len;
4586 if (extent_count > 0 &&
4587 copy_from_user(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
4588 sizeof(struct fiemap_extent)) != 0)
4589 GOTO(out, rc = -EFAULT);
4591 rc = ll_do_fiemap(inode, fiemap, num_bytes);
4593 fieinfo->fi_flags = fiemap->fm_flags;
4594 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
4595 if (extent_count > 0 &&
4596 copy_to_user(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
4597 fiemap->fm_mapped_extents *
4598 sizeof(struct fiemap_extent)) != 0)
4599 GOTO(out, rc = -EFAULT);
4601 OBD_FREE_LARGE(fiemap, num_bytes);
4605 struct posix_acl *ll_get_acl(struct inode *inode, int type)
4607 struct ll_inode_info *lli = ll_i2info(inode);
4608 struct posix_acl *acl = NULL;
4611 spin_lock(&lli->lli_lock);
4612 /* VFS' acl_permission_check->check_acl will release the refcount */
4613 acl = posix_acl_dup(lli->lli_posix_acl);
4614 spin_unlock(&lli->lli_lock);
4619 #ifdef HAVE_IOP_SET_ACL
4620 #ifdef CONFIG_FS_POSIX_ACL
4621 int ll_set_acl(struct inode *inode, struct posix_acl *acl, int type)
4623 struct ll_sb_info *sbi = ll_i2sbi(inode);
4624 struct ptlrpc_request *req = NULL;
4625 const char *name = NULL;
4627 size_t value_size = 0;
4632 case ACL_TYPE_ACCESS:
4633 name = XATTR_NAME_POSIX_ACL_ACCESS;
4635 rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
4638 case ACL_TYPE_DEFAULT:
4639 name = XATTR_NAME_POSIX_ACL_DEFAULT;
4640 if (!S_ISDIR(inode->i_mode))
4641 rc = acl ? -EACCES : 0;
4652 value_size = posix_acl_xattr_size(acl->a_count);
4653 value = kmalloc(value_size, GFP_NOFS);
4655 GOTO(out, rc = -ENOMEM);
4657 rc = posix_acl_to_xattr(&init_user_ns, acl, value, value_size);
4659 GOTO(out_value, rc);
4662 rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode),
4663 value ? OBD_MD_FLXATTR : OBD_MD_FLXATTRRM,
4664 name, value, value_size, 0, 0, &req);
4666 ptlrpc_req_finished(req);
4671 forget_cached_acl(inode, type);
4673 set_cached_acl(inode, type, acl);
4676 #endif /* CONFIG_FS_POSIX_ACL */
4677 #endif /* HAVE_IOP_SET_ACL */
4679 #ifndef HAVE_GENERIC_PERMISSION_2ARGS
4681 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
4682 ll_check_acl(struct inode *inode, int mask, unsigned int flags)
4684 ll_check_acl(struct inode *inode, int mask)
4687 # ifdef CONFIG_FS_POSIX_ACL
4688 struct posix_acl *acl;
4692 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
4693 if (flags & IPERM_FLAG_RCU)
4696 acl = ll_get_acl(inode, ACL_TYPE_ACCESS);
4701 rc = posix_acl_permission(inode, acl, mask);
4702 posix_acl_release(acl);
4705 # else /* !CONFIG_FS_POSIX_ACL */
4707 # endif /* CONFIG_FS_POSIX_ACL */
4709 #endif /* HAVE_GENERIC_PERMISSION_2ARGS */
4711 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
4712 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags)
4714 # ifdef HAVE_INODE_PERMISION_2ARGS
4715 int ll_inode_permission(struct inode *inode, int mask)
4717 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
4722 struct ll_sb_info *sbi;
4723 struct root_squash_info *squash;
4724 struct cred *cred = NULL;
4725 const struct cred *old_cred = NULL;
4727 bool squash_id = false;
4730 #ifdef MAY_NOT_BLOCK
4731 if (mask & MAY_NOT_BLOCK)
4733 #elif defined(HAVE_GENERIC_PERMISSION_4ARGS)
4734 if (flags & IPERM_FLAG_RCU)
4738 /* as root inode are NOT getting validated in lookup operation,
4739 * need to do it before permission check. */
4741 if (inode == inode->i_sb->s_root->d_inode) {
4742 rc = ll_inode_revalidate(inode->i_sb->s_root, IT_LOOKUP);
4747 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), inode mode %x mask %o\n",
4748 PFID(ll_inode2fid(inode)), inode, inode->i_mode, mask);
4750 /* squash fsuid/fsgid if needed */
4751 sbi = ll_i2sbi(inode);
4752 squash = &sbi->ll_squash;
4753 if (unlikely(squash->rsi_uid != 0 &&
4754 uid_eq(current_fsuid(), GLOBAL_ROOT_UID) &&
4755 !(sbi->ll_flags & LL_SBI_NOROOTSQUASH))) {
4759 CDEBUG(D_OTHER, "squash creds (%d:%d)=>(%d:%d)\n",
4760 __kuid_val(current_fsuid()), __kgid_val(current_fsgid()),
4761 squash->rsi_uid, squash->rsi_gid);
4763 /* update current process's credentials
4764 * and FS capability */
4765 cred = prepare_creds();
4769 cred->fsuid = make_kuid(&init_user_ns, squash->rsi_uid);
4770 cred->fsgid = make_kgid(&init_user_ns, squash->rsi_gid);
4771 for (cap = 0; cap < sizeof(cfs_cap_t) * 8; cap++) {
4772 if ((1 << cap) & CFS_CAP_FS_MASK)
4773 cap_lower(cred->cap_effective, cap);
4775 old_cred = override_creds(cred);
4778 ll_stats_ops_tally(sbi, LPROC_LL_INODE_PERM, 1);
4779 rc = ll_generic_permission(inode, mask, flags, ll_check_acl);
4780 /* restore current process's credentials and FS capability */
4782 revert_creds(old_cred);
4789 /* -o localflock - only provides locally consistent flock locks */
4790 struct file_operations ll_file_operations = {
4791 #ifdef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4792 # ifdef HAVE_SYNC_READ_WRITE
4793 .read = new_sync_read,
4794 .write = new_sync_write,
4796 .read_iter = ll_file_read_iter,
4797 .write_iter = ll_file_write_iter,
4798 #else /* !HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4799 .read = ll_file_read,
4800 .aio_read = ll_file_aio_read,
4801 .write = ll_file_write,
4802 .aio_write = ll_file_aio_write,
4803 #endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4804 .unlocked_ioctl = ll_file_ioctl,
4805 .open = ll_file_open,
4806 .release = ll_file_release,
4807 .mmap = ll_file_mmap,
4808 .llseek = ll_file_seek,
4809 .splice_read = ll_file_splice_read,
4814 struct file_operations ll_file_operations_flock = {
4815 #ifdef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4816 # ifdef HAVE_SYNC_READ_WRITE
4817 .read = new_sync_read,
4818 .write = new_sync_write,
4819 # endif /* HAVE_SYNC_READ_WRITE */
4820 .read_iter = ll_file_read_iter,
4821 .write_iter = ll_file_write_iter,
4822 #else /* !HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4823 .read = ll_file_read,
4824 .aio_read = ll_file_aio_read,
4825 .write = ll_file_write,
4826 .aio_write = ll_file_aio_write,
4827 #endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4828 .unlocked_ioctl = ll_file_ioctl,
4829 .open = ll_file_open,
4830 .release = ll_file_release,
4831 .mmap = ll_file_mmap,
4832 .llseek = ll_file_seek,
4833 .splice_read = ll_file_splice_read,
4836 .flock = ll_file_flock,
4837 .lock = ll_file_flock
4840 /* These are for -o noflock - to return ENOSYS on flock calls */
4841 struct file_operations ll_file_operations_noflock = {
4842 #ifdef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
4843 # ifdef HAVE_SYNC_READ_WRITE
4844 .read = new_sync_read,
4845 .write = new_sync_write,
4846 # endif /* HAVE_SYNC_READ_WRITE */
4847 .read_iter = ll_file_read_iter,
4848 .write_iter = ll_file_write_iter,
4849 #else /* !HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4850 .read = ll_file_read,
4851 .aio_read = ll_file_aio_read,
4852 .write = ll_file_write,
4853 .aio_write = ll_file_aio_write,
4854 #endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
4855 .unlocked_ioctl = ll_file_ioctl,
4856 .open = ll_file_open,
4857 .release = ll_file_release,
4858 .mmap = ll_file_mmap,
4859 .llseek = ll_file_seek,
4860 .splice_read = ll_file_splice_read,
4863 .flock = ll_file_noflock,
4864 .lock = ll_file_noflock
4867 struct inode_operations ll_file_inode_operations = {
4868 .setattr = ll_setattr,
4869 .getattr = ll_getattr,
4870 .permission = ll_inode_permission,
4871 #ifdef HAVE_IOP_XATTR
4872 .setxattr = ll_setxattr,
4873 .getxattr = ll_getxattr,
4874 .removexattr = ll_removexattr,
4876 .listxattr = ll_listxattr,
4877 .fiemap = ll_fiemap,
4878 #ifdef HAVE_IOP_GET_ACL
4879 .get_acl = ll_get_acl,
4881 #ifdef HAVE_IOP_SET_ACL
4882 .set_acl = ll_set_acl,
4886 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
4888 struct ll_inode_info *lli = ll_i2info(inode);
4889 struct cl_object *obj = lli->lli_clob;
4898 env = cl_env_get(&refcheck);
4900 RETURN(PTR_ERR(env));
4902 rc = cl_conf_set(env, lli->lli_clob, conf);
4906 if (conf->coc_opc == OBJECT_CONF_SET) {
4907 struct ldlm_lock *lock = conf->coc_lock;
4908 struct cl_layout cl = {
4912 LASSERT(lock != NULL);
4913 LASSERT(ldlm_has_layout(lock));
4915 /* it can only be allowed to match after layout is
4916 * applied to inode otherwise false layout would be
4917 * seen. Applying layout shoud happen before dropping
4918 * the intent lock. */
4919 ldlm_lock_allow_match(lock);
4921 rc = cl_object_layout_get(env, obj, &cl);
4926 DFID": layout version change: %u -> %u\n",
4927 PFID(&lli->lli_fid), ll_layout_version_get(lli),
4929 ll_layout_version_set(lli, cl.cl_layout_gen);
4933 cl_env_put(env, &refcheck);
4938 /* Fetch layout from MDT with getxattr request, if it's not ready yet */
4939 static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
4942 struct ll_sb_info *sbi = ll_i2sbi(inode);
4943 struct ptlrpc_request *req;
4950 CDEBUG(D_INODE, DFID" LVB_READY=%d l_lvb_data=%p l_lvb_len=%d\n",
4951 PFID(ll_inode2fid(inode)), ldlm_is_lvb_ready(lock),
4952 lock->l_lvb_data, lock->l_lvb_len);
4954 if (lock->l_lvb_data != NULL)
4957 /* if layout lock was granted right away, the layout is returned
4958 * within DLM_LVB of dlm reply; otherwise if the lock was ever
4959 * blocked and then granted via completion ast, we have to fetch
4960 * layout here. Please note that we can't use the LVB buffer in
4961 * completion AST because it doesn't have a large enough buffer */
4962 rc = ll_get_default_mdsize(sbi, &lmmsize);
4966 rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), OBD_MD_FLXATTR,
4967 XATTR_NAME_LOV, lmmsize, &req);
4970 GOTO(out, rc = 0); /* empty layout */
4977 if (lmmsize == 0) /* empty layout */
4980 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, lmmsize);
4982 GOTO(out, rc = -EFAULT);
4984 OBD_ALLOC_LARGE(lvbdata, lmmsize);
4985 if (lvbdata == NULL)
4986 GOTO(out, rc = -ENOMEM);
4988 memcpy(lvbdata, lmm, lmmsize);
4989 lock_res_and_lock(lock);
4990 if (unlikely(lock->l_lvb_data == NULL)) {
4991 lock->l_lvb_type = LVB_T_LAYOUT;
4992 lock->l_lvb_data = lvbdata;
4993 lock->l_lvb_len = lmmsize;
4996 unlock_res_and_lock(lock);
4999 OBD_FREE_LARGE(lvbdata, lmmsize);
5004 ptlrpc_req_finished(req);
5009 * Apply the layout to the inode. Layout lock is held and will be released
5012 static int ll_layout_lock_set(struct lustre_handle *lockh, enum ldlm_mode mode,
5013 struct inode *inode)
5015 struct ll_inode_info *lli = ll_i2info(inode);
5016 struct ll_sb_info *sbi = ll_i2sbi(inode);
5017 struct ldlm_lock *lock;
5018 struct cl_object_conf conf;
5021 bool wait_layout = false;
5024 LASSERT(lustre_handle_is_used(lockh));
5026 lock = ldlm_handle2lock(lockh);
5027 LASSERT(lock != NULL);
5028 LASSERT(ldlm_has_layout(lock));
5030 LDLM_DEBUG(lock, "file "DFID"(%p) being reconfigured",
5031 PFID(&lli->lli_fid), inode);
5033 /* in case this is a caching lock and reinstate with new inode */
5034 md_set_lock_data(sbi->ll_md_exp, lockh, inode, NULL);
5036 lock_res_and_lock(lock);
5037 lvb_ready = ldlm_is_lvb_ready(lock);
5038 unlock_res_and_lock(lock);
5040 /* checking lvb_ready is racy but this is okay. The worst case is
5041 * that multi processes may configure the file on the same time. */
5045 rc = ll_layout_fetch(inode, lock);
5049 /* for layout lock, lmm is stored in lock's lvb.
5050 * lvb_data is immutable if the lock is held so it's safe to access it
5053 * set layout to file. Unlikely this will fail as old layout was
5054 * surely eliminated */
5055 memset(&conf, 0, sizeof conf);
5056 conf.coc_opc = OBJECT_CONF_SET;
5057 conf.coc_inode = inode;
5058 conf.coc_lock = lock;
5059 conf.u.coc_layout.lb_buf = lock->l_lvb_data;
5060 conf.u.coc_layout.lb_len = lock->l_lvb_len;
5061 rc = ll_layout_conf(inode, &conf);
5063 /* refresh layout failed, need to wait */
5064 wait_layout = rc == -EBUSY;
5067 LDLM_LOCK_PUT(lock);
5068 ldlm_lock_decref(lockh, mode);
5070 /* wait for IO to complete if it's still being used. */
5072 CDEBUG(D_INODE, "%s: "DFID"(%p) wait for layout reconf\n",
5073 sbi->ll_fsname, PFID(&lli->lli_fid), inode);
5075 memset(&conf, 0, sizeof conf);
5076 conf.coc_opc = OBJECT_CONF_WAIT;
5077 conf.coc_inode = inode;
5078 rc = ll_layout_conf(inode, &conf);
5082 CDEBUG(D_INODE, "%s file="DFID" waiting layout return: %d\n",
5083 sbi->ll_fsname, PFID(&lli->lli_fid), rc);
5089 * Issue layout intent RPC to MDS.
5090 * \param inode [in] file inode
5091 * \param intent [in] layout intent
5093 * \retval 0 on success
5094 * \retval < 0 error code
5096 static int ll_layout_intent(struct inode *inode, struct layout_intent *intent)
5098 struct ll_inode_info *lli = ll_i2info(inode);
5099 struct ll_sb_info *sbi = ll_i2sbi(inode);
5100 struct md_op_data *op_data;
5101 struct lookup_intent it;
5102 struct ptlrpc_request *req;
5106 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
5107 0, 0, LUSTRE_OPC_ANY, NULL);
5108 if (IS_ERR(op_data))
5109 RETURN(PTR_ERR(op_data));
5111 op_data->op_data = intent;
5112 op_data->op_data_size = sizeof(*intent);
5114 memset(&it, 0, sizeof(it));
5115 it.it_op = IT_LAYOUT;
5116 if (intent->li_opc == LAYOUT_INTENT_WRITE ||
5117 intent->li_opc == LAYOUT_INTENT_TRUNC)
5118 it.it_flags = FMODE_WRITE;
5120 LDLM_DEBUG_NOLOCK("%s: requeue layout lock for file "DFID"(%p)",
5121 sbi->ll_fsname, PFID(&lli->lli_fid), inode);
5123 rc = md_intent_lock(sbi->ll_md_exp, op_data, &it, &req,
5124 &ll_md_blocking_ast, 0);
5125 if (it.it_request != NULL)
5126 ptlrpc_req_finished(it.it_request);
5127 it.it_request = NULL;
5129 ll_finish_md_op_data(op_data);
5131 /* set lock data in case this is a new lock */
5133 ll_set_lock_data(sbi->ll_md_exp, inode, &it, NULL);
5135 ll_intent_drop_lock(&it);
5141 * This function checks if there exists a LAYOUT lock on the client side,
5142 * or enqueues it if it doesn't have one in cache.
5144 * This function will not hold layout lock so it may be revoked any time after
5145 * this function returns. Any operations depend on layout should be redone
5148 * This function should be called before lov_io_init() to get an uptodate
5149 * layout version, the caller should save the version number and after IO
5150 * is finished, this function should be called again to verify that layout
5151 * is not changed during IO time.
5153 int ll_layout_refresh(struct inode *inode, __u32 *gen)
5155 struct ll_inode_info *lli = ll_i2info(inode);
5156 struct ll_sb_info *sbi = ll_i2sbi(inode);
5157 struct lustre_handle lockh;
5158 struct layout_intent intent = {
5159 .li_opc = LAYOUT_INTENT_ACCESS,
5161 enum ldlm_mode mode;
5165 *gen = ll_layout_version_get(lli);
5166 if (!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK) || *gen != CL_LAYOUT_GEN_NONE)
5170 LASSERT(fid_is_sane(ll_inode2fid(inode)));
5171 LASSERT(S_ISREG(inode->i_mode));
5173 /* take layout lock mutex to enqueue layout lock exclusively. */
5174 mutex_lock(&lli->lli_layout_mutex);
5177 /* mostly layout lock is caching on the local side, so try to
5178 * match it before grabbing layout lock mutex. */
5179 mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh, 0,
5180 LCK_CR | LCK_CW | LCK_PR | LCK_PW);
5181 if (mode != 0) { /* hit cached lock */
5182 rc = ll_layout_lock_set(&lockh, mode, inode);
5188 rc = ll_layout_intent(inode, &intent);
5194 *gen = ll_layout_version_get(lli);
5195 mutex_unlock(&lli->lli_layout_mutex);
5201 * Issue layout intent RPC indicating where in a file an IO is about to write.
5203 * \param[in] inode file inode.
5204 * \param[in] ext write range with start offset of fille in bytes where
5205 * an IO is about to write, and exclusive end offset in
5208 * \retval 0 on success
5209 * \retval < 0 error code
5211 int ll_layout_write_intent(struct inode *inode, enum layout_intent_opc opc,
5212 struct lu_extent *ext)
5214 struct layout_intent intent = {
5216 .li_extent.e_start = ext->e_start,
5217 .li_extent.e_end = ext->e_end,
5222 rc = ll_layout_intent(inode, &intent);
5228 * This function send a restore request to the MDT
5230 int ll_layout_restore(struct inode *inode, loff_t offset, __u64 length)
5232 struct hsm_user_request *hur;
5236 len = sizeof(struct hsm_user_request) +
5237 sizeof(struct hsm_user_item);
5238 OBD_ALLOC(hur, len);
5242 hur->hur_request.hr_action = HUA_RESTORE;
5243 hur->hur_request.hr_archive_id = 0;
5244 hur->hur_request.hr_flags = 0;
5245 memcpy(&hur->hur_user_item[0].hui_fid, &ll_i2info(inode)->lli_fid,
5246 sizeof(hur->hur_user_item[0].hui_fid));
5247 hur->hur_user_item[0].hui_extent.offset = offset;
5248 hur->hur_user_item[0].hui_extent.length = length;
5249 hur->hur_request.hr_itemcount = 1;
5250 rc = obd_iocontrol(LL_IOC_HSM_REQUEST, ll_i2sbi(inode)->ll_md_exp,