4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Phil Schwan <phil@clusterfs.com>
40 * Author: Andreas Dilger <adilger@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_LLITE
44 #include <lustre_dlm.h>
45 #include <lustre_lite.h>
46 #include <linux/pagemap.h>
47 #include <linux/file.h>
48 #include "llite_internal.h"
49 #include <lustre/ll_fiemap.h>
51 #include "cl_object.h"
53 struct ll_file_data *ll_file_data_get(void)
55 struct ll_file_data *fd;
57 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, CFS_ALLOC_IO);
58 fd->fd_write_failed = false;
62 static void ll_file_data_put(struct ll_file_data *fd)
65 OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
68 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
69 struct lustre_handle *fh)
71 op_data->op_fid1 = ll_i2info(inode)->lli_fid;
72 op_data->op_attr.ia_mode = inode->i_mode;
73 op_data->op_attr.ia_atime = inode->i_atime;
74 op_data->op_attr.ia_mtime = inode->i_mtime;
75 op_data->op_attr.ia_ctime = inode->i_ctime;
76 op_data->op_attr.ia_size = i_size_read(inode);
77 op_data->op_attr_blocks = inode->i_blocks;
78 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
79 ll_inode_to_ext_flags(inode->i_flags);
80 op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
82 op_data->op_handle = *fh;
83 op_data->op_capa1 = ll_mdscapa_get(inode);
87 * Closes the IO epoch and packs all the attributes into @op_data for
90 static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
91 struct obd_client_handle *och)
95 op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME_SET |
96 ATTR_MTIME_SET | ATTR_CTIME_SET;
98 if (!(och->och_flags & FMODE_WRITE))
101 if (!exp_connect_som(ll_i2mdexp(inode)) || !S_ISREG(inode->i_mode))
102 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
104 ll_ioepoch_close(inode, op_data, &och, 0);
107 ll_pack_inode2opdata(inode, op_data, &och->och_fh);
108 ll_prep_md_op_data(op_data, inode, NULL, NULL,
109 0, 0, LUSTRE_OPC_ANY, NULL);
113 static int ll_close_inode_openhandle(struct obd_export *md_exp,
115 struct obd_client_handle *och)
117 struct obd_export *exp = ll_i2mdexp(inode);
118 struct md_op_data *op_data;
119 struct ptlrpc_request *req = NULL;
120 struct obd_device *obd = class_exp2obd(exp);
127 * XXX: in case of LMV, is this correct to access
130 CERROR("Invalid MDC connection handle "LPX64"\n",
131 ll_i2mdexp(inode)->exp_handle.h_cookie);
135 OBD_ALLOC_PTR(op_data);
137 GOTO(out, rc = -ENOMEM); // XXX We leak openhandle and request here.
139 ll_prepare_close(inode, op_data, och);
140 epoch_close = (op_data->op_flags & MF_EPOCH_CLOSE);
141 rc = md_close(md_exp, op_data, och->och_mod, &req);
143 /* This close must have the epoch closed. */
144 LASSERT(epoch_close);
145 /* MDS has instructed us to obtain Size-on-MDS attribute from
146 * OSTs and send setattr to back to MDS. */
147 rc = ll_som_update(inode, op_data);
149 CERROR("inode %lu mdc Size-on-MDS update failed: "
150 "rc = %d\n", inode->i_ino, rc);
154 CERROR("inode %lu mdc close failed: rc = %d\n",
157 ll_finish_md_op_data(op_data);
160 rc = ll_objects_destroy(req, inode);
162 CERROR("inode %lu ll_objects destroy: rc = %d\n",
169 if (exp_connect_som(exp) && !epoch_close &&
170 S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
171 ll_queue_done_writing(inode, LLIF_DONE_WRITING);
173 md_clear_open_replay_data(md_exp, och);
174 /* Free @och if it is not waiting for DONE_WRITING. */
175 och->och_fh.cookie = DEAD_HANDLE_MAGIC;
178 if (req) /* This is close request */
179 ptlrpc_req_finished(req);
183 int ll_md_real_close(struct inode *inode, int flags)
185 struct ll_inode_info *lli = ll_i2info(inode);
186 struct obd_client_handle **och_p;
187 struct obd_client_handle *och;
192 if (flags & FMODE_WRITE) {
193 och_p = &lli->lli_mds_write_och;
194 och_usecount = &lli->lli_open_fd_write_count;
195 } else if (flags & FMODE_EXEC) {
196 och_p = &lli->lli_mds_exec_och;
197 och_usecount = &lli->lli_open_fd_exec_count;
199 LASSERT(flags & FMODE_READ);
200 och_p = &lli->lli_mds_read_och;
201 och_usecount = &lli->lli_open_fd_read_count;
204 cfs_mutex_lock(&lli->lli_och_mutex);
205 if (*och_usecount) { /* There are still users of this handle, so
207 cfs_mutex_unlock(&lli->lli_och_mutex);
212 cfs_mutex_unlock(&lli->lli_och_mutex);
214 if (och) { /* There might be a race and somebody have freed this och
216 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
223 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
226 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
227 struct ll_inode_info *lli = ll_i2info(inode);
231 /* clear group lock, if present */
232 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
233 ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
235 /* Let's see if we have good enough OPEN lock on the file and if
236 we can skip talking to MDS */
237 if (file->f_dentry->d_inode) { /* Can this ever be false? */
239 int flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
240 struct lustre_handle lockh;
241 struct inode *inode = file->f_dentry->d_inode;
242 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
244 cfs_mutex_lock(&lli->lli_och_mutex);
245 if (fd->fd_omode & FMODE_WRITE) {
247 LASSERT(lli->lli_open_fd_write_count);
248 lli->lli_open_fd_write_count--;
249 } else if (fd->fd_omode & FMODE_EXEC) {
251 LASSERT(lli->lli_open_fd_exec_count);
252 lli->lli_open_fd_exec_count--;
255 LASSERT(lli->lli_open_fd_read_count);
256 lli->lli_open_fd_read_count--;
258 cfs_mutex_unlock(&lli->lli_och_mutex);
260 if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
261 LDLM_IBITS, &policy, lockmode,
263 rc = ll_md_real_close(file->f_dentry->d_inode,
267 CERROR("Releasing a file %p with negative dentry %p. Name %s",
268 file, file->f_dentry, file->f_dentry->d_name.name);
271 LUSTRE_FPRIVATE(file) = NULL;
272 ll_file_data_put(fd);
273 ll_capa_close(inode);
278 /* While this returns an error code, fput() the caller does not, so we need
279 * to make every effort to clean up all of our state here. Also, applications
280 * rarely check close errors and even if an error is returned they will not
281 * re-try the close call.
283 int ll_file_release(struct inode *inode, struct file *file)
285 struct ll_file_data *fd;
286 struct ll_sb_info *sbi = ll_i2sbi(inode);
287 struct ll_inode_info *lli = ll_i2info(inode);
291 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
292 inode->i_generation, inode);
294 #ifdef CONFIG_FS_POSIX_ACL
295 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
296 inode == inode->i_sb->s_root->d_inode) {
297 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
300 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
301 fd->fd_flags &= ~LL_FILE_RMTACL;
302 rct_del(&sbi->ll_rct, cfs_curproc_pid());
303 et_search_free(&sbi->ll_et, cfs_curproc_pid());
308 if (inode->i_sb->s_root != file->f_dentry)
309 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
310 fd = LUSTRE_FPRIVATE(file);
313 /* The last ref on @file, maybe not the the owner pid of statahead.
314 * Different processes can open the same dir, "ll_opendir_key" means:
315 * it is me that should stop the statahead thread. */
316 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
317 lli->lli_opendir_pid != 0)
318 ll_stop_statahead(inode, lli->lli_opendir_key);
320 if (inode->i_sb->s_root == file->f_dentry) {
321 LUSTRE_FPRIVATE(file) = NULL;
322 ll_file_data_put(fd);
326 if (!S_ISDIR(inode->i_mode)) {
327 lov_read_and_clear_async_rc(lli->lli_clob);
328 lli->lli_async_rc = 0;
331 rc = ll_md_close(sbi->ll_md_exp, inode, file);
333 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
334 libcfs_debug_dumplog();
339 static int ll_intent_file_open(struct file *file, void *lmm,
340 int lmmsize, struct lookup_intent *itp)
342 struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
343 struct dentry *parent = file->f_dentry->d_parent;
344 const char *name = file->f_dentry->d_name.name;
345 const int len = file->f_dentry->d_name.len;
346 struct md_op_data *op_data;
347 struct ptlrpc_request *req;
348 __u32 opc = LUSTRE_OPC_ANY;
355 /* Usually we come here only for NFSD, and we want open lock.
356 But we can also get here with pre 2.6.15 patchless kernels, and in
357 that case that lock is also ok */
358 /* We can also get here if there was cached open handle in revalidate_it
359 * but it disappeared while we were getting from there to ll_file_open.
360 * But this means this file was closed and immediatelly opened which
361 * makes a good candidate for using OPEN lock */
362 /* If lmmsize & lmm are not 0, we are just setting stripe info
363 * parameters. No need for the open lock */
364 if (lmm == NULL && lmmsize == 0) {
365 itp->it_flags |= MDS_OPEN_LOCK;
366 if (itp->it_flags & FMODE_WRITE)
367 opc = LUSTRE_OPC_CREATE;
370 op_data = ll_prep_md_op_data(NULL, parent->d_inode,
371 file->f_dentry->d_inode, name, len,
374 RETURN(PTR_ERR(op_data));
376 itp->it_flags |= MDS_OPEN_BY_FID;
377 rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
378 0 /*unused */, &req, ll_md_blocking_ast, 0);
379 ll_finish_md_op_data(op_data);
381 /* reason for keep own exit path - don`t flood log
382 * with messages with -ESTALE errors.
384 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
385 it_open_error(DISP_OPEN_OPEN, itp))
387 ll_release_openhandle(file->f_dentry, itp);
391 if (it_disposition(itp, DISP_LOOKUP_NEG))
392 GOTO(out, rc = -ENOENT);
394 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
395 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
396 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
400 rc = ll_prep_inode(&file->f_dentry->d_inode, req, NULL);
401 if (!rc && itp->d.lustre.it_lock_mode)
402 ll_set_lock_data(sbi->ll_md_exp, file->f_dentry->d_inode,
406 ptlrpc_req_finished(itp->d.lustre.it_data);
407 it_clear_disposition(itp, DISP_ENQ_COMPLETE);
408 ll_intent_drop_lock(itp);
414 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
415 * not believe attributes if a few ioepoch holders exist. Attributes for
416 * previous ioepoch if new one is opened are also skipped by MDS.
418 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
420 if (ioepoch && lli->lli_ioepoch != ioepoch) {
421 lli->lli_ioepoch = ioepoch;
422 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
423 ioepoch, PFID(&lli->lli_fid));
427 static int ll_och_fill(struct obd_export *md_exp, struct ll_inode_info *lli,
428 struct lookup_intent *it, struct obd_client_handle *och)
430 struct ptlrpc_request *req = it->d.lustre.it_data;
431 struct mdt_body *body;
435 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
436 LASSERT(body != NULL); /* reply already checked out */
438 memcpy(&och->och_fh, &body->handle, sizeof(body->handle));
439 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
440 och->och_fid = lli->lli_fid;
441 och->och_flags = it->it_flags;
442 ll_ioepoch_open(lli, body->ioepoch);
444 return md_set_open_replay_data(md_exp, och, req);
447 int ll_local_open(struct file *file, struct lookup_intent *it,
448 struct ll_file_data *fd, struct obd_client_handle *och)
450 struct inode *inode = file->f_dentry->d_inode;
451 struct ll_inode_info *lli = ll_i2info(inode);
454 LASSERT(!LUSTRE_FPRIVATE(file));
459 struct ptlrpc_request *req = it->d.lustre.it_data;
460 struct mdt_body *body;
463 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, lli, it, och);
467 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
468 if ((it->it_flags & FMODE_WRITE) &&
469 (body->valid & OBD_MD_FLSIZE))
470 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
471 lli->lli_ioepoch, PFID(&lli->lli_fid));
474 LUSTRE_FPRIVATE(file) = fd;
475 ll_readahead_init(inode, &fd->fd_ras);
476 fd->fd_omode = it->it_flags;
480 /* Open a file, and (for the very first open) create objects on the OSTs at
481 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
482 * creation or open until ll_lov_setstripe() ioctl is called.
484 * If we already have the stripe MD locally then we don't request it in
485 * md_open(), by passing a lmm_size = 0.
487 * It is up to the application to ensure no other processes open this file
488 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
489 * used. We might be able to avoid races of that sort by getting lli_open_sem
490 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
491 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
493 int ll_file_open(struct inode *inode, struct file *file)
495 struct ll_inode_info *lli = ll_i2info(inode);
496 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
497 .it_flags = file->f_flags };
498 struct obd_client_handle **och_p = NULL;
499 __u64 *och_usecount = NULL;
500 struct ll_file_data *fd;
501 int rc = 0, opendir_set = 0;
504 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
505 inode->i_generation, inode, file->f_flags);
507 it = file->private_data; /* XXX: compat macro */
508 file->private_data = NULL; /* prevent ll_local_open assertion */
510 fd = ll_file_data_get();
512 GOTO(out_och_free, rc = -ENOMEM);
515 if (S_ISDIR(inode->i_mode)) {
516 cfs_spin_lock(&lli->lli_sa_lock);
517 if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
518 lli->lli_opendir_pid == 0) {
519 lli->lli_opendir_key = fd;
520 lli->lli_opendir_pid = cfs_curproc_pid();
523 cfs_spin_unlock(&lli->lli_sa_lock);
526 if (inode->i_sb->s_root == file->f_dentry) {
527 LUSTRE_FPRIVATE(file) = fd;
531 if (!it || !it->d.lustre.it_disposition) {
532 /* Convert f_flags into access mode. We cannot use file->f_mode,
533 * because everything but O_ACCMODE mask was stripped from
535 if ((oit.it_flags + 1) & O_ACCMODE)
537 if (file->f_flags & O_TRUNC)
538 oit.it_flags |= FMODE_WRITE;
540 /* kernel only call f_op->open in dentry_open. filp_open calls
541 * dentry_open after call to open_namei that checks permissions.
542 * Only nfsd_open call dentry_open directly without checking
543 * permissions and because of that this code below is safe. */
544 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
545 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
547 /* We do not want O_EXCL here, presumably we opened the file
548 * already? XXX - NFS implications? */
549 oit.it_flags &= ~O_EXCL;
551 /* bug20584, if "it_flags" contains O_CREAT, the file will be
552 * created if necessary, then "IT_CREAT" should be set to keep
553 * consistent with it */
554 if (oit.it_flags & O_CREAT)
555 oit.it_op |= IT_CREAT;
561 /* Let's see if we have file open on MDS already. */
562 if (it->it_flags & FMODE_WRITE) {
563 och_p = &lli->lli_mds_write_och;
564 och_usecount = &lli->lli_open_fd_write_count;
565 } else if (it->it_flags & FMODE_EXEC) {
566 och_p = &lli->lli_mds_exec_och;
567 och_usecount = &lli->lli_open_fd_exec_count;
569 och_p = &lli->lli_mds_read_och;
570 och_usecount = &lli->lli_open_fd_read_count;
573 cfs_mutex_lock(&lli->lli_och_mutex);
574 if (*och_p) { /* Open handle is present */
575 if (it_disposition(it, DISP_OPEN_OPEN)) {
576 /* Well, there's extra open request that we do not need,
577 let's close it somehow. This will decref request. */
578 rc = it_open_error(DISP_OPEN_OPEN, it);
580 cfs_mutex_unlock(&lli->lli_och_mutex);
581 GOTO(out_openerr, rc);
584 ll_release_openhandle(file->f_dentry, it);
588 rc = ll_local_open(file, it, fd, NULL);
591 cfs_mutex_unlock(&lli->lli_och_mutex);
592 GOTO(out_openerr, rc);
595 LASSERT(*och_usecount == 0);
596 if (!it->d.lustre.it_disposition) {
597 /* We cannot just request lock handle now, new ELC code
598 means that one of other OPEN locks for this file
599 could be cancelled, and since blocking ast handler
600 would attempt to grab och_mutex as well, that would
601 result in a deadlock */
602 cfs_mutex_unlock(&lli->lli_och_mutex);
603 it->it_create_mode |= M_CHECK_STALE;
604 rc = ll_intent_file_open(file, NULL, 0, it);
605 it->it_create_mode &= ~M_CHECK_STALE;
607 GOTO(out_openerr, rc);
611 OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
613 GOTO(out_och_free, rc = -ENOMEM);
617 /* md_intent_lock() didn't get a request ref if there was an
618 * open error, so don't do cleanup on the request here
620 /* XXX (green): Should not we bail out on any error here, not
621 * just open error? */
622 rc = it_open_error(DISP_OPEN_OPEN, it);
624 GOTO(out_och_free, rc);
626 LASSERT(it_disposition(it, DISP_ENQ_OPEN_REF));
628 rc = ll_local_open(file, it, fd, *och_p);
630 GOTO(out_och_free, rc);
632 cfs_mutex_unlock(&lli->lli_och_mutex);
635 /* Must do this outside lli_och_mutex lock to prevent deadlock where
636 different kind of OPEN lock for this same inode gets cancelled
637 by ldlm_cancel_lru */
638 if (!S_ISREG(inode->i_mode))
639 GOTO(out_och_free, rc);
643 if (!lli->lli_has_smd) {
644 if (file->f_flags & O_LOV_DELAY_CREATE ||
645 !(file->f_mode & FMODE_WRITE)) {
646 CDEBUG(D_INODE, "object creation was delayed\n");
647 GOTO(out_och_free, rc);
650 file->f_flags &= ~O_LOV_DELAY_CREATE;
651 GOTO(out_och_free, rc);
654 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
655 ptlrpc_req_finished(it->d.lustre.it_data);
656 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
660 if (och_p && *och_p) {
661 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
662 *och_p = NULL; /* OBD_FREE writes some magic there */
665 cfs_mutex_unlock(&lli->lli_och_mutex);
668 if (opendir_set != 0)
669 ll_stop_statahead(inode, lli->lli_opendir_key);
671 ll_file_data_put(fd);
673 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
679 /* Fills the obdo with the attributes for the lsm */
680 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
681 struct obd_capa *capa, struct obdo *obdo,
682 __u64 ioepoch, int sync)
684 struct ptlrpc_request_set *set;
685 struct obd_info oinfo = { { { 0 } } };
690 LASSERT(lsm != NULL);
694 oinfo.oi_oa->o_id = lsm->lsm_object_id;
695 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
696 oinfo.oi_oa->o_mode = S_IFREG;
697 oinfo.oi_oa->o_ioepoch = ioepoch;
698 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
699 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
700 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
701 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
702 OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
703 OBD_MD_FLDATAVERSION;
704 oinfo.oi_capa = capa;
706 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
707 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
710 set = ptlrpc_prep_set();
712 CERROR("can't allocate ptlrpc set\n");
715 rc = obd_getattr_async(exp, &oinfo, set);
717 rc = ptlrpc_set_wait(set);
718 ptlrpc_set_destroy(set);
721 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
722 OBD_MD_FLATIME | OBD_MD_FLMTIME |
723 OBD_MD_FLCTIME | OBD_MD_FLSIZE |
724 OBD_MD_FLDATAVERSION);
729 * Performs the getattr on the inode and updates its fields.
730 * If @sync != 0, perform the getattr under the server-side lock.
732 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
733 __u64 ioepoch, int sync)
735 struct obd_capa *capa = ll_mdscapa_get(inode);
736 struct lov_stripe_md *lsm;
740 lsm = ccc_inode_lsm_get(inode);
741 rc = ll_lsm_getattr(lsm, ll_i2dtexp(inode),
742 capa, obdo, ioepoch, sync);
745 obdo_refresh_inode(inode, obdo, obdo->o_valid);
747 "objid "LPX64" size %llu, blocks %llu, blksize %lu\n",
748 lsm ? lsm->lsm_object_id : 0, i_size_read(inode),
749 (unsigned long long)inode->i_blocks,
750 (unsigned long)ll_inode_blksize(inode));
752 ccc_inode_lsm_put(inode, lsm);
756 int ll_merge_lvb(struct inode *inode)
758 struct ll_inode_info *lli = ll_i2info(inode);
759 struct ll_sb_info *sbi = ll_i2sbi(inode);
760 struct lov_stripe_md *lsm;
766 lsm = ccc_inode_lsm_get(inode);
767 ll_inode_size_lock(inode);
768 inode_init_lvb(inode, &lvb);
770 /* merge timestamps the most resently obtained from mds with
771 timestamps obtained from osts */
772 lvb.lvb_atime = lli->lli_lvb.lvb_atime;
773 lvb.lvb_mtime = lli->lli_lvb.lvb_mtime;
774 lvb.lvb_ctime = lli->lli_lvb.lvb_ctime;
776 rc = obd_merge_lvb(sbi->ll_dt_exp, lsm, &lvb, 0);
777 cl_isize_write_nolock(inode, lvb.lvb_size);
779 CDEBUG(D_VFSTRACE, DFID" updating i_size "LPU64"\n",
780 PFID(&lli->lli_fid), lvb.lvb_size);
781 inode->i_blocks = lvb.lvb_blocks;
783 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
784 LTIME_S(inode->i_atime) = lvb.lvb_atime;
785 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
787 ll_inode_size_unlock(inode);
788 ccc_inode_lsm_put(inode, lsm);
793 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
796 struct obdo obdo = { 0 };
799 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
801 st->st_size = obdo.o_size;
802 st->st_blocks = obdo.o_blocks;
803 st->st_mtime = obdo.o_mtime;
804 st->st_atime = obdo.o_atime;
805 st->st_ctime = obdo.o_ctime;
810 void ll_io_init(struct cl_io *io, const struct file *file, int write)
812 struct inode *inode = file->f_dentry->d_inode;
814 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
816 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
817 io->u.ci_wr.wr_sync = file->f_flags & O_SYNC || IS_SYNC(inode);
819 io->ci_obj = ll_i2info(inode)->lli_clob;
820 io->ci_lockreq = CILR_MAYBE;
821 if (ll_file_nolock(file)) {
822 io->ci_lockreq = CILR_NEVER;
823 io->ci_no_srvlock = 1;
824 } else if (file->f_flags & O_APPEND) {
825 io->ci_lockreq = CILR_MANDATORY;
830 ll_file_io_generic(const struct lu_env *env, struct vvp_io_args *args,
831 struct file *file, enum cl_io_type iot,
832 loff_t *ppos, size_t count)
834 struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
835 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
840 io = ccc_env_thread_io(env);
841 ll_io_init(io, file, iot == CIT_WRITE);
843 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
844 struct vvp_io *vio = vvp_env_io(env);
845 struct ccc_io *cio = ccc_env_io(env);
846 int write_mutex_locked = 0;
848 cio->cui_fd = LUSTRE_FPRIVATE(file);
849 vio->cui_io_subtype = args->via_io_subtype;
851 switch (vio->cui_io_subtype) {
853 cio->cui_iov = args->u.normal.via_iov;
854 cio->cui_nrsegs = args->u.normal.via_nrsegs;
855 cio->cui_tot_nrsegs = cio->cui_nrsegs;
856 #ifndef HAVE_FILE_WRITEV
857 cio->cui_iocb = args->u.normal.via_iocb;
859 if ((iot == CIT_WRITE) &&
860 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
861 if (cfs_mutex_lock_interruptible(&lli->
863 GOTO(out, result = -ERESTARTSYS);
864 write_mutex_locked = 1;
865 } else if (iot == CIT_READ) {
866 cfs_down_read(&lli->lli_trunc_sem);
870 vio->u.sendfile.cui_actor = args->u.sendfile.via_actor;
871 vio->u.sendfile.cui_target = args->u.sendfile.via_target;
874 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
875 vio->u.splice.cui_flags = args->u.splice.via_flags;
878 CERROR("Unknow IO type - %u\n", vio->cui_io_subtype);
881 result = cl_io_loop(env, io);
882 if (write_mutex_locked)
883 cfs_mutex_unlock(&lli->lli_write_mutex);
884 else if (args->via_io_subtype == IO_NORMAL && iot == CIT_READ)
885 cfs_up_read(&lli->lli_trunc_sem);
887 /* cl_io_rw_init() handled IO */
888 result = io->ci_result;
891 if (io->ci_nob > 0) {
893 *ppos = io->u.ci_wr.wr.crw_pos;
899 if (iot == CIT_READ) {
901 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
902 LPROC_LL_READ_BYTES, result);
903 } else if (iot == CIT_WRITE) {
905 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
906 LPROC_LL_WRITE_BYTES, result);
907 fd->fd_write_failed = false;
909 fd->fd_write_failed = true;
918 * XXX: exact copy from kernel code (__generic_file_aio_write_nolock)
920 static int ll_file_get_iov_count(const struct iovec *iov,
921 unsigned long *nr_segs, size_t *count)
926 for (seg = 0; seg < *nr_segs; seg++) {
927 const struct iovec *iv = &iov[seg];
930 * If any segment has a negative length, or the cumulative
931 * length ever wraps negative then return -EINVAL.
934 if (unlikely((ssize_t)(cnt|iv->iov_len) < 0))
936 if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
941 cnt -= iv->iov_len; /* This segment is no good */
948 #ifdef HAVE_FILE_READV
949 static ssize_t ll_file_readv(struct file *file, const struct iovec *iov,
950 unsigned long nr_segs, loff_t *ppos)
953 struct vvp_io_args *args;
959 result = ll_file_get_iov_count(iov, &nr_segs, &count);
963 env = cl_env_get(&refcheck);
965 RETURN(PTR_ERR(env));
967 args = vvp_env_args(env, IO_NORMAL);
968 args->u.normal.via_iov = (struct iovec *)iov;
969 args->u.normal.via_nrsegs = nr_segs;
971 result = ll_file_io_generic(env, args, file, CIT_READ, ppos, count);
972 cl_env_put(env, &refcheck);
976 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
980 struct iovec *local_iov;
985 env = cl_env_get(&refcheck);
987 RETURN(PTR_ERR(env));
989 local_iov = &vvp_env_info(env)->vti_local_iov;
990 local_iov->iov_base = (void __user *)buf;
991 local_iov->iov_len = count;
992 result = ll_file_readv(file, local_iov, 1, ppos);
993 cl_env_put(env, &refcheck);
998 static ssize_t ll_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
999 unsigned long nr_segs, loff_t pos)
1002 struct vvp_io_args *args;
1008 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1012 env = cl_env_get(&refcheck);
1014 RETURN(PTR_ERR(env));
1016 args = vvp_env_args(env, IO_NORMAL);
1017 args->u.normal.via_iov = (struct iovec *)iov;
1018 args->u.normal.via_nrsegs = nr_segs;
1019 args->u.normal.via_iocb = iocb;
1021 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1022 &iocb->ki_pos, count);
1023 cl_env_put(env, &refcheck);
1027 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
1031 struct iovec *local_iov;
1032 struct kiocb *kiocb;
1037 env = cl_env_get(&refcheck);
1039 RETURN(PTR_ERR(env));
1041 local_iov = &vvp_env_info(env)->vti_local_iov;
1042 kiocb = &vvp_env_info(env)->vti_kiocb;
1043 local_iov->iov_base = (void __user *)buf;
1044 local_iov->iov_len = count;
1045 init_sync_kiocb(kiocb, file);
1046 kiocb->ki_pos = *ppos;
1047 kiocb->ki_left = count;
1049 result = ll_file_aio_read(kiocb, local_iov, 1, kiocb->ki_pos);
1050 *ppos = kiocb->ki_pos;
1052 cl_env_put(env, &refcheck);
1058 * Write to a file (through the page cache).
1060 #ifdef HAVE_FILE_WRITEV
1061 static ssize_t ll_file_writev(struct file *file, const struct iovec *iov,
1062 unsigned long nr_segs, loff_t *ppos)
1065 struct vvp_io_args *args;
1071 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1075 env = cl_env_get(&refcheck);
1077 RETURN(PTR_ERR(env));
1079 args = vvp_env_args(env, IO_NORMAL);
1080 args->u.normal.via_iov = (struct iovec *)iov;
1081 args->u.normal.via_nrsegs = nr_segs;
1083 result = ll_file_io_generic(env, args, file, CIT_WRITE, ppos, count);
1084 cl_env_put(env, &refcheck);
1088 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1092 struct iovec *local_iov;
1097 env = cl_env_get(&refcheck);
1099 RETURN(PTR_ERR(env));
1101 local_iov = &vvp_env_info(env)->vti_local_iov;
1102 local_iov->iov_base = (void __user *)buf;
1103 local_iov->iov_len = count;
1105 result = ll_file_writev(file, local_iov, 1, ppos);
1106 cl_env_put(env, &refcheck);
1110 #else /* AIO stuff */
1111 static ssize_t ll_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
1112 unsigned long nr_segs, loff_t pos)
1115 struct vvp_io_args *args;
1121 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1125 env = cl_env_get(&refcheck);
1127 RETURN(PTR_ERR(env));
1129 args = vvp_env_args(env, IO_NORMAL);
1130 args->u.normal.via_iov = (struct iovec *)iov;
1131 args->u.normal.via_nrsegs = nr_segs;
1132 args->u.normal.via_iocb = iocb;
1134 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1135 &iocb->ki_pos, count);
1136 cl_env_put(env, &refcheck);
1140 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1144 struct iovec *local_iov;
1145 struct kiocb *kiocb;
1150 env = cl_env_get(&refcheck);
1152 RETURN(PTR_ERR(env));
1154 local_iov = &vvp_env_info(env)->vti_local_iov;
1155 kiocb = &vvp_env_info(env)->vti_kiocb;
1156 local_iov->iov_base = (void __user *)buf;
1157 local_iov->iov_len = count;
1158 init_sync_kiocb(kiocb, file);
1159 kiocb->ki_pos = *ppos;
1160 kiocb->ki_left = count;
1162 result = ll_file_aio_write(kiocb, local_iov, 1, kiocb->ki_pos);
1163 *ppos = kiocb->ki_pos;
1165 cl_env_put(env, &refcheck);
1171 #ifdef HAVE_KERNEL_SENDFILE
1173 * Send file content (through pagecache) somewhere with helper
1175 static ssize_t ll_file_sendfile(struct file *in_file, loff_t *ppos,size_t count,
1176 read_actor_t actor, void *target)
1179 struct vvp_io_args *args;
1184 env = cl_env_get(&refcheck);
1186 RETURN(PTR_ERR(env));
1188 args = vvp_env_args(env, IO_SENDFILE);
1189 args->u.sendfile.via_target = target;
1190 args->u.sendfile.via_actor = actor;
1192 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1193 cl_env_put(env, &refcheck);
1198 #ifdef HAVE_KERNEL_SPLICE_READ
1200 * Send file content (through pagecache) somewhere with helper
1202 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1203 struct pipe_inode_info *pipe, size_t count,
1207 struct vvp_io_args *args;
1212 env = cl_env_get(&refcheck);
1214 RETURN(PTR_ERR(env));
1216 args = vvp_env_args(env, IO_SPLICE);
1217 args->u.splice.via_pipe = pipe;
1218 args->u.splice.via_flags = flags;
1220 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1221 cl_env_put(env, &refcheck);
1226 static int ll_lov_recreate(struct inode *inode, obd_id id, obd_seq seq,
1229 struct obd_export *exp = ll_i2dtexp(inode);
1230 struct obd_trans_info oti = { 0 };
1231 struct obdo *oa = NULL;
1234 struct lov_stripe_md *lsm = NULL, *lsm2;
1241 lsm = ccc_inode_lsm_get(inode);
1243 GOTO(out, rc = -ENOENT);
1245 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1246 (lsm->lsm_stripe_count));
1248 OBD_ALLOC_LARGE(lsm2, lsm_size);
1250 GOTO(out, rc = -ENOMEM);
1254 oa->o_nlink = ost_idx;
1255 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1256 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1257 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1258 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1259 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
1260 memcpy(lsm2, lsm, lsm_size);
1261 ll_inode_size_lock(inode);
1262 rc = obd_create(NULL, exp, oa, &lsm2, &oti);
1263 ll_inode_size_unlock(inode);
1265 OBD_FREE_LARGE(lsm2, lsm_size);
1268 ccc_inode_lsm_put(inode, lsm);
1273 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1275 struct ll_recreate_obj ucreat;
1278 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1281 if (cfs_copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1282 sizeof(struct ll_recreate_obj)))
1285 RETURN(ll_lov_recreate(inode, ucreat.lrc_id, 0,
1286 ucreat.lrc_ost_idx));
1289 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1296 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1299 if (cfs_copy_from_user(&fid, (struct lu_fid *)arg,
1300 sizeof(struct lu_fid)))
1303 id = fid_oid(&fid) | ((fid_seq(&fid) & 0xffff) << 32);
1304 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1305 RETURN(ll_lov_recreate(inode, id, 0, ost_idx));
1308 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
1309 int flags, struct lov_user_md *lum, int lum_size)
1311 struct lov_stripe_md *lsm = NULL;
1312 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1316 lsm = ccc_inode_lsm_get(inode);
1318 ccc_inode_lsm_put(inode, lsm);
1319 CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
1324 ll_inode_size_lock(inode);
1325 rc = ll_intent_file_open(file, lum, lum_size, &oit);
1328 rc = oit.d.lustre.it_status;
1330 GOTO(out_req_free, rc);
1332 ll_release_openhandle(file->f_dentry, &oit);
1335 ll_inode_size_unlock(inode);
1336 ll_intent_release(&oit);
1337 ccc_inode_lsm_put(inode, lsm);
1340 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1344 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1345 struct lov_mds_md **lmmp, int *lmm_size,
1346 struct ptlrpc_request **request)
1348 struct ll_sb_info *sbi = ll_i2sbi(inode);
1349 struct mdt_body *body;
1350 struct lov_mds_md *lmm = NULL;
1351 struct ptlrpc_request *req = NULL;
1352 struct md_op_data *op_data;
1355 rc = ll_get_max_mdsize(sbi, &lmmsize);
1359 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1360 strlen(filename), lmmsize,
1361 LUSTRE_OPC_ANY, NULL);
1362 if (IS_ERR(op_data))
1363 RETURN(PTR_ERR(op_data));
1365 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1366 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1367 ll_finish_md_op_data(op_data);
1369 CDEBUG(D_INFO, "md_getattr_name failed "
1370 "on %s: rc %d\n", filename, rc);
1374 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1375 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1377 lmmsize = body->eadatasize;
1379 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1381 GOTO(out, rc = -ENODATA);
1384 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1385 LASSERT(lmm != NULL);
1387 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1388 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1389 GOTO(out, rc = -EPROTO);
1393 * This is coming from the MDS, so is probably in
1394 * little endian. We convert it to host endian before
1395 * passing it to userspace.
1397 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1398 /* if function called for directory - we should
1399 * avoid swab not existent lsm objects */
1400 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1401 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1402 if (S_ISREG(body->mode))
1403 lustre_swab_lov_user_md_objects(
1404 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1405 ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count);
1406 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1407 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1408 if (S_ISREG(body->mode))
1409 lustre_swab_lov_user_md_objects(
1410 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1411 ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
1417 *lmm_size = lmmsize;
1422 static int ll_lov_setea(struct inode *inode, struct file *file,
1425 int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1426 struct lov_user_md *lump;
1427 int lum_size = sizeof(struct lov_user_md) +
1428 sizeof(struct lov_user_ost_data);
1432 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1435 OBD_ALLOC_LARGE(lump, lum_size);
1439 if (cfs_copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1440 OBD_FREE_LARGE(lump, lum_size);
1444 rc = ll_lov_setstripe_ea_info(inode, file, flags, lump, lum_size);
1446 OBD_FREE_LARGE(lump, lum_size);
1450 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1453 struct lov_user_md_v3 lumv3;
1454 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1455 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1456 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1459 int flags = FMODE_WRITE;
1462 /* first try with v1 which is smaller than v3 */
1463 lum_size = sizeof(struct lov_user_md_v1);
1464 if (cfs_copy_from_user(lumv1, lumv1p, lum_size))
1467 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1468 lum_size = sizeof(struct lov_user_md_v3);
1469 if (cfs_copy_from_user(&lumv3, lumv3p, lum_size))
1473 rc = ll_lov_setstripe_ea_info(inode, file, flags, lumv1, lum_size);
1475 struct lov_stripe_md *lsm;
1476 put_user(0, &lumv1p->lmm_stripe_count);
1477 lsm = ccc_inode_lsm_get(inode);
1478 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1479 0, lsm, (void *)arg);
1480 ccc_inode_lsm_put(inode, lsm);
1485 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1487 struct lov_stripe_md *lsm;
1491 lsm = ccc_inode_lsm_get(inode);
1493 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
1495 ccc_inode_lsm_put(inode, lsm);
1499 int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1501 struct ll_inode_info *lli = ll_i2info(inode);
1502 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1503 struct ccc_grouplock grouplock;
1507 if (ll_file_nolock(file))
1508 RETURN(-EOPNOTSUPP);
1510 cfs_spin_lock(&lli->lli_lock);
1511 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1512 CWARN("group lock already existed with gid %lu\n",
1513 fd->fd_grouplock.cg_gid);
1514 cfs_spin_unlock(&lli->lli_lock);
1517 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1518 cfs_spin_unlock(&lli->lli_lock);
1520 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1521 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1525 cfs_spin_lock(&lli->lli_lock);
1526 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1527 cfs_spin_unlock(&lli->lli_lock);
1528 CERROR("another thread just won the race\n");
1529 cl_put_grouplock(&grouplock);
1533 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1534 fd->fd_grouplock = grouplock;
1535 cfs_spin_unlock(&lli->lli_lock);
1537 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1541 int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1543 struct ll_inode_info *lli = ll_i2info(inode);
1544 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1545 struct ccc_grouplock grouplock;
1548 cfs_spin_lock(&lli->lli_lock);
1549 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1550 cfs_spin_unlock(&lli->lli_lock);
1551 CWARN("no group lock held\n");
1554 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1556 if (fd->fd_grouplock.cg_gid != arg) {
1557 CWARN("group lock %lu doesn't match current id %lu\n",
1558 arg, fd->fd_grouplock.cg_gid);
1559 cfs_spin_unlock(&lli->lli_lock);
1563 grouplock = fd->fd_grouplock;
1564 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1565 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1566 cfs_spin_unlock(&lli->lli_lock);
1568 cl_put_grouplock(&grouplock);
1569 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1574 * Close inode open handle
1576 * \param dentry [in] dentry which contains the inode
1577 * \param it [in,out] intent which contains open info and result
1580 * \retval <0 failure
1582 int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
1584 struct inode *inode = dentry->d_inode;
1585 struct obd_client_handle *och;
1591 /* Root ? Do nothing. */
1592 if (dentry->d_inode->i_sb->s_root == dentry)
1595 /* No open handle to close? Move away */
1596 if (!it_disposition(it, DISP_OPEN_OPEN))
1599 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1601 OBD_ALLOC(och, sizeof(*och));
1603 GOTO(out, rc = -ENOMEM);
1605 ll_och_fill(ll_i2sbi(inode)->ll_md_exp,
1606 ll_i2info(inode), it, och);
1608 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1611 /* this one is in place of ll_file_open */
1612 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
1613 ptlrpc_req_finished(it->d.lustre.it_data);
1614 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1620 * Get size for inode for which FIEMAP mapping is requested.
1621 * Make the FIEMAP get_info call and returns the result.
1623 int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1626 struct obd_export *exp = ll_i2dtexp(inode);
1627 struct lov_stripe_md *lsm = NULL;
1628 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1629 int vallen = num_bytes;
1633 /* Checks for fiemap flags */
1634 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1635 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1639 /* Check for FIEMAP_FLAG_SYNC */
1640 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1641 rc = filemap_fdatawrite(inode->i_mapping);
1646 lsm = ccc_inode_lsm_get(inode);
1650 /* If the stripe_count > 1 and the application does not understand
1651 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1653 if (lsm->lsm_stripe_count > 1 &&
1654 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER))
1655 GOTO(out, rc = -EOPNOTSUPP);
1657 fm_key.oa.o_id = lsm->lsm_object_id;
1658 fm_key.oa.o_seq = lsm->lsm_object_seq;
1659 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1661 obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
1662 obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
1663 /* If filesize is 0, then there would be no objects for mapping */
1664 if (fm_key.oa.o_size == 0) {
1665 fiemap->fm_mapped_extents = 0;
1669 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1671 rc = obd_get_info(NULL, exp, sizeof(fm_key), &fm_key, &vallen,
1674 CERROR("obd_get_info failed: rc = %d\n", rc);
1677 ccc_inode_lsm_put(inode, lsm);
1681 int ll_fid2path(struct obd_export *exp, void *arg)
1683 struct getinfo_fid2path *gfout, *gfin;
1687 /* Need to get the buflen */
1688 OBD_ALLOC_PTR(gfin);
1691 if (cfs_copy_from_user(gfin, arg, sizeof(*gfin))) {
1696 outsize = sizeof(*gfout) + gfin->gf_pathlen;
1697 OBD_ALLOC(gfout, outsize);
1698 if (gfout == NULL) {
1702 memcpy(gfout, gfin, sizeof(*gfout));
1705 /* Call mdc_iocontrol */
1706 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1709 if (cfs_copy_to_user(arg, gfout, outsize))
1713 OBD_FREE(gfout, outsize);
1717 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1719 struct ll_user_fiemap *fiemap_s;
1720 size_t num_bytes, ret_bytes;
1721 unsigned int extent_count;
1724 /* Get the extent count so we can calculate the size of
1725 * required fiemap buffer */
1726 if (get_user(extent_count,
1727 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1729 num_bytes = sizeof(*fiemap_s) + (extent_count *
1730 sizeof(struct ll_fiemap_extent));
1732 OBD_ALLOC_LARGE(fiemap_s, num_bytes);
1733 if (fiemap_s == NULL)
1736 /* get the fiemap value */
1737 if (copy_from_user(fiemap_s,(struct ll_user_fiemap __user *)arg,
1739 GOTO(error, rc = -EFAULT);
1741 /* If fm_extent_count is non-zero, read the first extent since
1742 * it is used to calculate end_offset and device from previous
1745 if (copy_from_user(&fiemap_s->fm_extents[0],
1746 (char __user *)arg + sizeof(*fiemap_s),
1747 sizeof(struct ll_fiemap_extent)))
1748 GOTO(error, rc = -EFAULT);
1751 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1755 ret_bytes = sizeof(struct ll_user_fiemap);
1757 if (extent_count != 0)
1758 ret_bytes += (fiemap_s->fm_mapped_extents *
1759 sizeof(struct ll_fiemap_extent));
1761 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1765 OBD_FREE_LARGE(fiemap_s, num_bytes);
1770 * Read the data_version for inode.
1772 * This value is computed using stripe object version on OST.
1773 * Version is computed using server side locking.
1775 * @param extent_lock Take extent lock. Not needed if a process is already
1776 * holding the OST object group locks.
1778 static int ll_data_version(struct inode *inode, __u64 *data_version,
1781 struct lov_stripe_md *lsm = NULL;
1782 struct ll_sb_info *sbi = ll_i2sbi(inode);
1783 struct obdo *obdo = NULL;
1787 /* If no stripe, we consider version is 0. */
1788 lsm = ccc_inode_lsm_get(inode);
1791 CDEBUG(D_INODE, "No object for inode\n");
1795 OBD_ALLOC_PTR(obdo);
1797 ccc_inode_lsm_put(inode, lsm);
1801 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
1803 if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
1806 *data_version = obdo->o_data_version;
1810 ccc_inode_lsm_put(inode, lsm);
1815 long ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1817 struct inode *inode = file->f_dentry->d_inode;
1818 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1823 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
1824 inode->i_generation, inode, cmd);
1825 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1827 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1828 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1832 case LL_IOC_GETFLAGS:
1833 /* Get the current value of the file flags */
1834 return put_user(fd->fd_flags, (int *)arg);
1835 case LL_IOC_SETFLAGS:
1836 case LL_IOC_CLRFLAGS:
1837 /* Set or clear specific file flags */
1838 /* XXX This probably needs checks to ensure the flags are
1839 * not abused, and to handle any flag side effects.
1841 if (get_user(flags, (int *) arg))
1844 if (cmd == LL_IOC_SETFLAGS) {
1845 if ((flags & LL_FILE_IGNORE_LOCK) &&
1846 !(file->f_flags & O_DIRECT)) {
1847 CERROR("%s: unable to disable locking on "
1848 "non-O_DIRECT file\n", current->comm);
1852 fd->fd_flags |= flags;
1854 fd->fd_flags &= ~flags;
1857 case LL_IOC_LOV_SETSTRIPE:
1858 RETURN(ll_lov_setstripe(inode, file, arg));
1859 case LL_IOC_LOV_SETEA:
1860 RETURN(ll_lov_setea(inode, file, arg));
1861 case LL_IOC_LOV_GETSTRIPE:
1862 RETURN(ll_lov_getstripe(inode, arg));
1863 case LL_IOC_RECREATE_OBJ:
1864 RETURN(ll_lov_recreate_obj(inode, arg));
1865 case LL_IOC_RECREATE_FID:
1866 RETURN(ll_lov_recreate_fid(inode, arg));
1867 case FSFILT_IOC_FIEMAP:
1868 RETURN(ll_ioctl_fiemap(inode, arg));
1869 case FSFILT_IOC_GETFLAGS:
1870 case FSFILT_IOC_SETFLAGS:
1871 RETURN(ll_iocontrol(inode, file, cmd, arg));
1872 case FSFILT_IOC_GETVERSION_OLD:
1873 case FSFILT_IOC_GETVERSION:
1874 RETURN(put_user(inode->i_generation, (int *)arg));
1875 case LL_IOC_GROUP_LOCK:
1876 RETURN(ll_get_grouplock(inode, file, arg));
1877 case LL_IOC_GROUP_UNLOCK:
1878 RETURN(ll_put_grouplock(inode, file, arg));
1879 case IOC_OBD_STATFS:
1880 RETURN(ll_obd_statfs(inode, (void *)arg));
1882 /* We need to special case any other ioctls we want to handle,
1883 * to send them to the MDS/OST as appropriate and to properly
1884 * network encode the arg field.
1885 case FSFILT_IOC_SETVERSION_OLD:
1886 case FSFILT_IOC_SETVERSION:
1888 case LL_IOC_FLUSHCTX:
1889 RETURN(ll_flush_ctx(inode));
1890 case LL_IOC_PATH2FID: {
1891 if (cfs_copy_to_user((void *)arg, ll_inode2fid(inode),
1892 sizeof(struct lu_fid)))
1897 case OBD_IOC_FID2PATH:
1898 RETURN(ll_fid2path(ll_i2mdexp(inode), (void *)arg));
1899 case LL_IOC_DATA_VERSION: {
1900 struct ioc_data_version idv;
1903 if (cfs_copy_from_user(&idv, (char *)arg, sizeof(idv)))
1906 rc = ll_data_version(inode, &idv.idv_version,
1907 !(idv.idv_flags & LL_DV_NOFLUSH));
1910 cfs_copy_to_user((char *) arg, &idv, sizeof(idv)))
1916 case LL_IOC_GET_MDTIDX: {
1919 mdtidx = ll_get_mdt_idx(inode);
1923 if (put_user((int)mdtidx, (int*)arg))
1928 case OBD_IOC_GETDTNAME:
1929 case OBD_IOC_GETMDNAME:
1930 RETURN(ll_get_obd_name(inode, cmd, arg));
1935 ll_iocontrol_call(inode, file, cmd, arg, &err))
1938 RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
1944 loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
1946 struct inode *inode = file->f_dentry->d_inode;
1949 retval = offset + ((origin == 2) ? i_size_read(inode) :
1950 (origin == 1) ? file->f_pos : 0);
1951 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%llu=%#llx(%s)\n",
1952 inode->i_ino, inode->i_generation, inode, retval, retval,
1953 origin == 2 ? "SEEK_END": origin == 1 ? "SEEK_CUR" : "SEEK_SET");
1954 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
1956 if (origin == 2) { /* SEEK_END */
1959 rc = ll_glimpse_size(inode);
1963 offset += i_size_read(inode);
1964 } else if (origin == 1) { /* SEEK_CUR */
1965 offset += file->f_pos;
1969 if (offset >= 0 && offset <= ll_file_maxbytes(inode)) {
1970 if (offset != file->f_pos) {
1971 file->f_pos = offset;
1979 int ll_flush(struct file *file, fl_owner_t id)
1981 struct inode *inode = file->f_dentry->d_inode;
1982 struct ll_inode_info *lli = ll_i2info(inode);
1983 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1986 LASSERT(!S_ISDIR(inode->i_mode));
1988 /* catch async errors that were recorded back when async writeback
1989 * failed for pages in this mapping. */
1990 rc = lli->lli_async_rc;
1991 lli->lli_async_rc = 0;
1992 err = lov_read_and_clear_async_rc(lli->lli_clob);
1996 /* The application has been told write failure already.
1997 * Do not report failure again. */
1998 if (fd->fd_write_failed)
2000 return rc ? -EIO : 0;
2004 * Called to make sure a portion of file has been written out.
2005 * if @local_only is not true, it will send OST_SYNC RPCs to ost.
2007 * Return how many pages have been written.
2009 int cl_sync_file_range(struct inode *inode, loff_t start, loff_t end,
2010 enum cl_fsync_mode mode)
2012 struct cl_env_nest nest;
2015 struct obd_capa *capa = NULL;
2016 struct cl_fsync_io *fio;
2020 if (mode != CL_FSYNC_NONE && mode != CL_FSYNC_LOCAL &&
2021 mode != CL_FSYNC_DISCARD && mode != CL_FSYNC_ALL)
2024 env = cl_env_nested_get(&nest);
2026 RETURN(PTR_ERR(env));
2028 capa = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
2030 io = ccc_env_thread_io(env);
2031 io->ci_obj = cl_i2info(inode)->lli_clob;
2032 io->ci_ignore_layout = 1;
2034 /* initialize parameters for sync */
2035 fio = &io->u.ci_fsync;
2036 fio->fi_capa = capa;
2037 fio->fi_start = start;
2039 fio->fi_fid = ll_inode2fid(inode);
2040 fio->fi_mode = mode;
2041 fio->fi_nr_written = 0;
2043 if (cl_io_init(env, io, CIT_FSYNC, io->ci_obj) == 0)
2044 result = cl_io_loop(env, io);
2046 result = io->ci_result;
2048 result = fio->fi_nr_written;
2049 cl_io_fini(env, io);
2050 cl_env_nested_put(&nest, env);
2057 #ifdef HAVE_FILE_FSYNC_4ARGS
2058 int ll_fsync(struct file *file, loff_t start, loff_t end, int data)
2059 #elif defined(HAVE_FILE_FSYNC_2ARGS)
2060 int ll_fsync(struct file *file, int data)
2062 int ll_fsync(struct file *file, struct dentry *dentry, int data)
2065 struct inode *inode = file->f_dentry->d_inode;
2066 struct ll_inode_info *lli = ll_i2info(inode);
2067 struct ptlrpc_request *req;
2068 struct obd_capa *oc;
2069 struct lov_stripe_md *lsm;
2072 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
2073 inode->i_generation, inode);
2074 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
2076 /* fsync's caller has already called _fdata{sync,write}, we want
2077 * that IO to finish before calling the osc and mdc sync methods */
2078 rc = filemap_fdatawait(inode->i_mapping);
2080 /* catch async errors that were recorded back when async writeback
2081 * failed for pages in this mapping. */
2082 if (!S_ISDIR(inode->i_mode)) {
2083 err = lli->lli_async_rc;
2084 lli->lli_async_rc = 0;
2087 err = lov_read_and_clear_async_rc(lli->lli_clob);
2092 oc = ll_mdscapa_get(inode);
2093 err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2099 ptlrpc_req_finished(req);
2101 lsm = ccc_inode_lsm_get(inode);
2103 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
2105 err = cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
2107 if (rc == 0 && err < 0)
2110 fd->fd_write_failed = true;
2112 fd->fd_write_failed = false;
2114 ccc_inode_lsm_put(inode, lsm);
2119 int ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
2121 struct inode *inode = file->f_dentry->d_inode;
2122 struct ll_sb_info *sbi = ll_i2sbi(inode);
2123 struct ldlm_enqueue_info einfo = { .ei_type = LDLM_FLOCK,
2124 .ei_cb_cp =ldlm_flock_completion_ast,
2125 .ei_cbdata = file_lock };
2126 struct md_op_data *op_data;
2127 struct lustre_handle lockh = {0};
2128 ldlm_policy_data_t flock = {{0}};
2133 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
2134 inode->i_ino, file_lock);
2136 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
2138 if (file_lock->fl_flags & FL_FLOCK) {
2139 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
2140 /* flocks are whole-file locks */
2141 flock.l_flock.end = OFFSET_MAX;
2142 /* For flocks owner is determined by the local file desctiptor*/
2143 flock.l_flock.owner = (unsigned long)file_lock->fl_file;
2144 } else if (file_lock->fl_flags & FL_POSIX) {
2145 flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
2146 flock.l_flock.start = file_lock->fl_start;
2147 flock.l_flock.end = file_lock->fl_end;
2151 flock.l_flock.pid = file_lock->fl_pid;
2153 /* Somewhat ugly workaround for svc lockd.
2154 * lockd installs custom fl_lmops->fl_compare_owner that checks
2155 * for the fl_owner to be the same (which it always is on local node
2156 * I guess between lockd processes) and then compares pid.
2157 * As such we assign pid to the owner field to make it all work,
2158 * conflict with normal locks is unlikely since pid space and
2159 * pointer space for current->files are not intersecting */
2160 if (file_lock->fl_lmops && file_lock->fl_lmops->fl_compare_owner)
2161 flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
2163 switch (file_lock->fl_type) {
2165 einfo.ei_mode = LCK_PR;
2168 /* An unlock request may or may not have any relation to
2169 * existing locks so we may not be able to pass a lock handle
2170 * via a normal ldlm_lock_cancel() request. The request may even
2171 * unlock a byte range in the middle of an existing lock. In
2172 * order to process an unlock request we need all of the same
2173 * information that is given with a normal read or write record
2174 * lock request. To avoid creating another ldlm unlock (cancel)
2175 * message we'll treat a LCK_NL flock request as an unlock. */
2176 einfo.ei_mode = LCK_NL;
2179 einfo.ei_mode = LCK_PW;
2182 CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n",
2183 file_lock->fl_type);
2198 flags = LDLM_FL_BLOCK_NOWAIT;
2204 flags = LDLM_FL_TEST_LOCK;
2205 /* Save the old mode so that if the mode in the lock changes we
2206 * can decrement the appropriate reader or writer refcount. */
2207 file_lock->fl_type = einfo.ei_mode;
2210 CERROR("unknown fcntl lock command: %d\n", cmd);
2214 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2215 LUSTRE_OPC_ANY, NULL);
2216 if (IS_ERR(op_data))
2217 RETURN(PTR_ERR(op_data));
2219 CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#x, mode=%u, "
2220 "start="LPU64", end="LPU64"\n", inode->i_ino, flock.l_flock.pid,
2221 flags, einfo.ei_mode, flock.l_flock.start, flock.l_flock.end);
2223 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2224 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2226 ll_finish_md_op_data(op_data);
2228 if ((file_lock->fl_flags & FL_FLOCK) &&
2229 (rc == 0 || file_lock->fl_type == F_UNLCK))
2230 flock_lock_file_wait(file, file_lock);
2231 if ((file_lock->fl_flags & FL_POSIX) &&
2232 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
2233 !(flags & LDLM_FL_TEST_LOCK))
2234 posix_lock_file_wait(file, file_lock);
2239 int ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
2247 * test if some locks matching bits and l_req_mode are acquired
2248 * - bits can be in different locks
2249 * - if found clear the common lock bits in *bits
2250 * - the bits not found, are kept in *bits
2252 * \param bits [IN] searched lock bits [IN]
2253 * \param l_req_mode [IN] searched lock mode
2254 * \retval boolean, true iff all bits are found
2256 int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode)
2258 struct lustre_handle lockh;
2259 ldlm_policy_data_t policy;
2260 ldlm_mode_t mode = (l_req_mode == LCK_MINMODE) ?
2261 (LCK_CR|LCK_CW|LCK_PR|LCK_PW) : l_req_mode;
2270 fid = &ll_i2info(inode)->lli_fid;
2271 CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
2272 ldlm_lockname[mode]);
2274 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
2275 for (i = 0; i < MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
2276 policy.l_inodebits.bits = *bits & (1 << i);
2277 if (policy.l_inodebits.bits == 0)
2280 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
2281 &policy, mode, &lockh)) {
2282 struct ldlm_lock *lock;
2284 lock = ldlm_handle2lock(&lockh);
2287 ~(lock->l_policy_data.l_inodebits.bits);
2288 LDLM_LOCK_PUT(lock);
2290 *bits &= ~policy.l_inodebits.bits;
2297 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
2298 struct lustre_handle *lockh)
2300 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2306 fid = &ll_i2info(inode)->lli_fid;
2307 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2309 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
2310 rc = md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2311 LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
2315 static int ll_inode_revalidate_fini(struct inode *inode, int rc) {
2316 if (rc == -ENOENT) { /* Already unlinked. Just update nlink
2317 * and return success */
2319 /* This path cannot be hit for regular files unless in
2320 * case of obscure races, so no need to to validate
2322 if (!S_ISREG(inode->i_mode) &&
2323 !S_ISDIR(inode->i_mode))
2328 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
2336 int __ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2339 struct inode *inode = dentry->d_inode;
2340 struct ptlrpc_request *req = NULL;
2341 struct obd_export *exp;
2346 CERROR("REPORT THIS LINE TO PETER\n");
2350 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
2351 inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
2353 exp = ll_i2mdexp(inode);
2355 /* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC.
2356 * But under CMD case, it caused some lock issues, should be fixed
2357 * with new CMD ibits lock. See bug 12718 */
2358 if (exp->exp_connect_flags & OBD_CONNECT_ATTRFID) {
2359 struct lookup_intent oit = { .it_op = IT_GETATTR };
2360 struct md_op_data *op_data;
2362 if (ibits == MDS_INODELOCK_LOOKUP)
2363 oit.it_op = IT_LOOKUP;
2365 /* Call getattr by fid, so do not provide name at all. */
2366 op_data = ll_prep_md_op_data(NULL, dentry->d_parent->d_inode,
2367 dentry->d_inode, NULL, 0, 0,
2368 LUSTRE_OPC_ANY, NULL);
2369 if (IS_ERR(op_data))
2370 RETURN(PTR_ERR(op_data));
2372 oit.it_create_mode |= M_CHECK_STALE;
2373 rc = md_intent_lock(exp, op_data, NULL, 0,
2374 /* we are not interested in name
2377 ll_md_blocking_ast, 0);
2378 ll_finish_md_op_data(op_data);
2379 oit.it_create_mode &= ~M_CHECK_STALE;
2381 rc = ll_inode_revalidate_fini(inode, rc);
2385 rc = ll_revalidate_it_finish(req, &oit, dentry);
2387 ll_intent_release(&oit);
2391 /* Unlinked? Unhash dentry, so it is not picked up later by
2392 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
2393 here to preserve get_cwd functionality on 2.6.
2395 if (!dentry->d_inode->i_nlink)
2396 d_lustre_invalidate(dentry);
2398 ll_lookup_finish_locks(&oit, dentry);
2399 } else if (!ll_have_md_lock(dentry->d_inode, &ibits, LCK_MINMODE)) {
2400 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
2401 obd_valid valid = OBD_MD_FLGETATTR;
2402 struct md_op_data *op_data;
2405 if (S_ISREG(inode->i_mode)) {
2406 rc = ll_get_max_mdsize(sbi, &ealen);
2409 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
2412 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2413 0, ealen, LUSTRE_OPC_ANY,
2415 if (IS_ERR(op_data))
2416 RETURN(PTR_ERR(op_data));
2418 op_data->op_valid = valid;
2419 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
2420 * capa for this inode. Because we only keep capas of dirs
2422 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2423 ll_finish_md_op_data(op_data);
2425 rc = ll_inode_revalidate_fini(inode, rc);
2429 rc = ll_prep_inode(&inode, req, NULL);
2432 ptlrpc_req_finished(req);
2436 int ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2439 struct inode *inode = dentry->d_inode;
2443 rc = __ll_inode_revalidate_it(dentry, it, ibits);
2445 /* if object not yet allocated, don't validate size */
2446 if (rc == 0 && !ll_i2info(dentry->d_inode)->lli_has_smd) {
2447 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
2448 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
2449 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
2453 /* ll_glimpse_size will prefer locally cached writes if they extend
2457 rc = ll_glimpse_size(inode);
2462 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
2463 struct lookup_intent *it, struct kstat *stat)
2465 struct inode *inode = de->d_inode;
2466 struct ll_sb_info *sbi = ll_i2sbi(inode);
2467 struct ll_inode_info *lli = ll_i2info(inode);
2470 res = ll_inode_revalidate_it(de, it, MDS_INODELOCK_UPDATE |
2471 MDS_INODELOCK_LOOKUP);
2472 ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
2477 stat->dev = inode->i_sb->s_dev;
2478 if (ll_need_32bit_api(sbi))
2479 stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
2481 stat->ino = inode->i_ino;
2482 stat->mode = inode->i_mode;
2483 stat->nlink = inode->i_nlink;
2484 stat->uid = inode->i_uid;
2485 stat->gid = inode->i_gid;
2486 stat->rdev = kdev_t_to_nr(inode->i_rdev);
2487 stat->atime = inode->i_atime;
2488 stat->mtime = inode->i_mtime;
2489 stat->ctime = inode->i_ctime;
2490 stat->blksize = 1 << inode->i_blkbits;
2492 stat->size = i_size_read(inode);
2493 stat->blocks = inode->i_blocks;
2497 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
2499 struct lookup_intent it = { .it_op = IT_GETATTR };
2501 return ll_getattr_it(mnt, de, &it, stat);
2504 #ifdef HAVE_LINUX_FIEMAP_H
2505 int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2506 __u64 start, __u64 len)
2510 struct ll_user_fiemap *fiemap;
2511 unsigned int extent_count = fieinfo->fi_extents_max;
2513 num_bytes = sizeof(*fiemap) + (extent_count *
2514 sizeof(struct ll_fiemap_extent));
2515 OBD_ALLOC_LARGE(fiemap, num_bytes);
2520 fiemap->fm_flags = fieinfo->fi_flags;
2521 fiemap->fm_extent_count = fieinfo->fi_extents_max;
2522 fiemap->fm_start = start;
2523 fiemap->fm_length = len;
2524 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
2525 sizeof(struct ll_fiemap_extent));
2527 rc = ll_do_fiemap(inode, fiemap, num_bytes);
2529 fieinfo->fi_flags = fiemap->fm_flags;
2530 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
2531 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
2532 fiemap->fm_mapped_extents * sizeof(struct ll_fiemap_extent));
2534 OBD_FREE_LARGE(fiemap, num_bytes);
2539 #ifndef HAVE_GENERIC_PERMISSION_2ARGS
2541 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
2542 lustre_check_acl(struct inode *inode, int mask, unsigned int flags)
2544 lustre_check_acl(struct inode *inode, int mask)
2547 # ifdef CONFIG_FS_POSIX_ACL
2548 struct ll_inode_info *lli = ll_i2info(inode);
2549 struct posix_acl *acl;
2553 # ifdef HAVE_GENERIC_PERMISSION_4ARGS
2554 if (flags & IPERM_FLAG_RCU)
2557 cfs_spin_lock(&lli->lli_lock);
2558 acl = posix_acl_dup(lli->lli_posix_acl);
2559 cfs_spin_unlock(&lli->lli_lock);
2564 rc = posix_acl_permission(inode, acl, mask);
2565 posix_acl_release(acl);
2568 # else /* !CONFIG_FS_POSIX_ACL */
2570 # endif /* CONFIG_FS_POSIX_ACL */
2572 #endif /* HAVE_GENERIC_PERMISSION_2ARGS */
2574 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
2575 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags)
2577 # ifdef HAVE_INODE_PERMISION_2ARGS
2578 int ll_inode_permission(struct inode *inode, int mask)
2580 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2587 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
2588 if (flags & IPERM_FLAG_RCU)
2592 /* as root inode are NOT getting validated in lookup operation,
2593 * need to do it before permission check. */
2595 if (inode == inode->i_sb->s_root->d_inode) {
2596 struct lookup_intent it = { .it_op = IT_LOOKUP };
2598 rc = __ll_inode_revalidate_it(inode->i_sb->s_root, &it,
2599 MDS_INODELOCK_LOOKUP);
2604 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
2605 inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
2607 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2608 return lustre_check_remote_perm(inode, mask);
2610 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2611 rc = ll_generic_permission(inode, mask, flags, lustre_check_acl);
2616 #ifdef HAVE_FILE_READV
2617 #define READ_METHOD readv
2618 #define READ_FUNCTION ll_file_readv
2619 #define WRITE_METHOD writev
2620 #define WRITE_FUNCTION ll_file_writev
2622 #define READ_METHOD aio_read
2623 #define READ_FUNCTION ll_file_aio_read
2624 #define WRITE_METHOD aio_write
2625 #define WRITE_FUNCTION ll_file_aio_write
2628 /* -o localflock - only provides locally consistent flock locks */
2629 struct file_operations ll_file_operations = {
2630 .read = ll_file_read,
2631 .READ_METHOD = READ_FUNCTION,
2632 .write = ll_file_write,
2633 .WRITE_METHOD = WRITE_FUNCTION,
2634 .unlocked_ioctl = ll_file_ioctl,
2635 .open = ll_file_open,
2636 .release = ll_file_release,
2637 .mmap = ll_file_mmap,
2638 .llseek = ll_file_seek,
2639 #ifdef HAVE_KERNEL_SENDFILE
2640 .sendfile = ll_file_sendfile,
2642 #ifdef HAVE_KERNEL_SPLICE_READ
2643 .splice_read = ll_file_splice_read,
2649 struct file_operations ll_file_operations_flock = {
2650 .read = ll_file_read,
2651 .READ_METHOD = READ_FUNCTION,
2652 .write = ll_file_write,
2653 .WRITE_METHOD = WRITE_FUNCTION,
2654 .unlocked_ioctl = ll_file_ioctl,
2655 .open = ll_file_open,
2656 .release = ll_file_release,
2657 .mmap = ll_file_mmap,
2658 .llseek = ll_file_seek,
2659 #ifdef HAVE_KERNEL_SENDFILE
2660 .sendfile = ll_file_sendfile,
2662 #ifdef HAVE_KERNEL_SPLICE_READ
2663 .splice_read = ll_file_splice_read,
2667 .flock = ll_file_flock,
2668 .lock = ll_file_flock
2671 /* These are for -o noflock - to return ENOSYS on flock calls */
2672 struct file_operations ll_file_operations_noflock = {
2673 .read = ll_file_read,
2674 .READ_METHOD = READ_FUNCTION,
2675 .write = ll_file_write,
2676 .WRITE_METHOD = WRITE_FUNCTION,
2677 .unlocked_ioctl = ll_file_ioctl,
2678 .open = ll_file_open,
2679 .release = ll_file_release,
2680 .mmap = ll_file_mmap,
2681 .llseek = ll_file_seek,
2682 #ifdef HAVE_KERNEL_SENDFILE
2683 .sendfile = ll_file_sendfile,
2685 #ifdef HAVE_KERNEL_SPLICE_READ
2686 .splice_read = ll_file_splice_read,
2690 .flock = ll_file_noflock,
2691 .lock = ll_file_noflock
2694 struct inode_operations ll_file_inode_operations = {
2695 .setattr = ll_setattr,
2696 .truncate = ll_truncate,
2697 .getattr = ll_getattr,
2698 .permission = ll_inode_permission,
2699 .setxattr = ll_setxattr,
2700 .getxattr = ll_getxattr,
2701 .listxattr = ll_listxattr,
2702 .removexattr = ll_removexattr,
2703 #ifdef HAVE_LINUX_FIEMAP_H
2704 .fiemap = ll_fiemap,
2708 /* dynamic ioctl number support routins */
2709 static struct llioc_ctl_data {
2710 cfs_rw_semaphore_t ioc_sem;
2711 cfs_list_t ioc_head;
2713 __RWSEM_INITIALIZER(llioc.ioc_sem),
2714 CFS_LIST_HEAD_INIT(llioc.ioc_head)
2719 cfs_list_t iocd_list;
2720 unsigned int iocd_size;
2721 llioc_callback_t iocd_cb;
2722 unsigned int iocd_count;
2723 unsigned int iocd_cmd[0];
2726 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
2729 struct llioc_data *in_data = NULL;
2732 if (cb == NULL || cmd == NULL ||
2733 count > LLIOC_MAX_CMD || count < 0)
2736 size = sizeof(*in_data) + count * sizeof(unsigned int);
2737 OBD_ALLOC(in_data, size);
2738 if (in_data == NULL)
2741 memset(in_data, 0, sizeof(*in_data));
2742 in_data->iocd_size = size;
2743 in_data->iocd_cb = cb;
2744 in_data->iocd_count = count;
2745 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
2747 cfs_down_write(&llioc.ioc_sem);
2748 cfs_list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
2749 cfs_up_write(&llioc.ioc_sem);
2754 void ll_iocontrol_unregister(void *magic)
2756 struct llioc_data *tmp;
2761 cfs_down_write(&llioc.ioc_sem);
2762 cfs_list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
2764 unsigned int size = tmp->iocd_size;
2766 cfs_list_del(&tmp->iocd_list);
2767 cfs_up_write(&llioc.ioc_sem);
2769 OBD_FREE(tmp, size);
2773 cfs_up_write(&llioc.ioc_sem);
2775 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
2778 EXPORT_SYMBOL(ll_iocontrol_register);
2779 EXPORT_SYMBOL(ll_iocontrol_unregister);
2781 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
2782 unsigned int cmd, unsigned long arg, int *rcp)
2784 enum llioc_iter ret = LLIOC_CONT;
2785 struct llioc_data *data;
2786 int rc = -EINVAL, i;
2788 cfs_down_read(&llioc.ioc_sem);
2789 cfs_list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
2790 for (i = 0; i < data->iocd_count; i++) {
2791 if (cmd != data->iocd_cmd[i])
2794 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
2798 if (ret == LLIOC_STOP)
2801 cfs_up_read(&llioc.ioc_sem);
2808 int ll_layout_conf(struct inode *inode, const struct cl_object_conf *conf)
2810 struct ll_inode_info *lli = ll_i2info(inode);
2811 struct cl_env_nest nest;
2816 if (lli->lli_clob == NULL)
2819 env = cl_env_nested_get(&nest);
2821 RETURN(PTR_ERR(env));
2823 result = cl_conf_set(env, lli->lli_clob, conf);
2824 cl_env_nested_put(&nest, env);
2829 * This function checks if there exists a LAYOUT lock on the client side,
2830 * or enqueues it if it doesn't have one in cache.
2832 * This function will not hold layout lock so it may be revoked any time after
2833 * this function returns. Any operations depend on layout should be redone
2836 * This function should be called before lov_io_init() to get an uptodate
2837 * layout version, the caller should save the version number and after IO
2838 * is finished, this function should be called again to verify that layout
2839 * is not changed during IO time.
2841 int ll_layout_refresh(struct inode *inode, __u32 *gen)
2843 struct ll_inode_info *lli = ll_i2info(inode);
2844 struct ll_sb_info *sbi = ll_i2sbi(inode);
2845 struct md_op_data *op_data = NULL;
2846 struct ptlrpc_request *req = NULL;
2847 struct lookup_intent it = { .it_op = IT_LAYOUT };
2848 struct lustre_handle lockh;
2850 struct cl_object_conf conf = { .coc_inode = inode,
2851 .coc_validate_only = true };
2856 if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_LAYOUT_LOCK))
2860 LASSERT(fid_is_sane(ll_inode2fid(inode)));
2861 LASSERT(S_ISREG(inode->i_mode));
2863 /* mostly layout lock is caching on the local side, so try to match
2864 * it before grabbing layout lock mutex. */
2865 mode = ll_take_md_lock(inode, MDS_INODELOCK_LAYOUT, &lockh);
2866 if (mode != 0) { /* hit cached lock */
2867 struct lov_stripe_md *lsm;
2869 lsm = ccc_inode_lsm_get(inode);
2871 *gen = lsm->lsm_layout_gen;
2872 ccc_inode_lsm_put(inode, lsm);
2873 ldlm_lock_decref(&lockh, mode);
2878 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL,
2879 0, 0, LUSTRE_OPC_ANY, NULL);
2880 if (IS_ERR(op_data))
2881 RETURN(PTR_ERR(op_data));
2883 /* take layout lock mutex to enqueue layout lock exclusively. */
2884 cfs_mutex_lock(&lli->lli_layout_mutex);
2886 /* make sure the old conf goes away */
2887 ll_layout_conf(inode, &conf);
2889 /* enqueue layout lock */
2890 rc = md_intent_lock(sbi->ll_md_exp, op_data, NULL, 0, &it, 0,
2891 &req, ll_md_blocking_ast, 0);
2893 /* we get a new lock, so update the lock data */
2894 lockh.cookie = it.d.lustre.it_lock_handle;
2895 md_set_lock_data(sbi->ll_md_exp, &lockh.cookie, inode, NULL);
2897 /* req == NULL is when lock was found in client cache, without
2898 * any request to server (but lsm can be canceled just after a
2901 struct ldlm_lock *lock = ldlm_handle2lock(&lockh);
2902 struct lustre_md md = { NULL };
2906 /* for IT_LAYOUT lock, lmm is returned in lock's lvb
2907 * data via completion callback */
2908 LASSERT(lock != NULL);
2909 lmm = lock->l_lvb_data;
2910 lmmsize = lock->l_lvb_len;
2912 rc = obd_unpackmd(sbi->ll_dt_exp, &md.lsm,
2916 *gen = md.lsm->lsm_layout_gen;
2918 memset(&conf, 0, sizeof conf);
2919 conf.coc_inode = inode;
2920 conf.u.coc_md = &md;
2921 ll_layout_conf(inode, &conf);
2923 lli->lli_has_smd = md.lsm != NULL;
2926 obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
2928 LDLM_LOCK_PUT(lock);
2929 ptlrpc_req_finished(req);
2930 } else { /* hit caching lock */
2931 struct lov_stripe_md *lsm;
2933 lsm = ccc_inode_lsm_get(inode);
2935 *gen = lsm->lsm_layout_gen;
2936 ccc_inode_lsm_put(inode, lsm);
2938 ll_intent_drop_lock(&it);
2940 cfs_mutex_unlock(&lli->lli_layout_mutex);
2941 ll_finish_md_op_data(op_data);