1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2011, 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
40 * Author: Peter Braam <braam@clusterfs.com>
41 * Author: Phil Schwan <phil@clusterfs.com>
42 * Author: Andreas Dilger <adilger@clusterfs.com>
45 #define DEBUG_SUBSYSTEM S_LLITE
46 #include <lustre_dlm.h>
47 #include <lustre_lite.h>
48 #include <linux/pagemap.h>
49 #include <linux/file.h>
50 #include "llite_internal.h"
51 #include <lustre/ll_fiemap.h>
53 #include "cl_object.h"
55 struct ll_file_data *ll_file_data_get(void)
57 struct ll_file_data *fd;
59 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, CFS_ALLOC_IO);
63 static void ll_file_data_put(struct ll_file_data *fd)
66 OBD_SLAB_FREE_PTR(fd, ll_file_data_slab);
69 void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data,
70 struct lustre_handle *fh)
72 op_data->op_fid1 = ll_i2info(inode)->lli_fid;
73 op_data->op_attr.ia_mode = inode->i_mode;
74 op_data->op_attr.ia_atime = inode->i_atime;
75 op_data->op_attr.ia_mtime = inode->i_mtime;
76 op_data->op_attr.ia_ctime = inode->i_ctime;
77 op_data->op_attr.ia_size = i_size_read(inode);
78 op_data->op_attr_blocks = inode->i_blocks;
79 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
80 ll_inode_to_ext_flags(inode->i_flags);
81 op_data->op_ioepoch = ll_i2info(inode)->lli_ioepoch;
83 op_data->op_handle = *fh;
84 op_data->op_capa1 = ll_mdscapa_get(inode);
88 * Closes the IO epoch and packs all the attributes into @op_data for
91 static void ll_prepare_close(struct inode *inode, struct md_op_data *op_data,
92 struct obd_client_handle *och)
96 op_data->op_attr.ia_valid = ATTR_MODE | ATTR_ATIME_SET |
97 ATTR_MTIME_SET | ATTR_CTIME_SET;
99 if (!(och->och_flags & FMODE_WRITE))
102 if (!exp_connect_som(ll_i2mdexp(inode)) || !S_ISREG(inode->i_mode))
103 op_data->op_attr.ia_valid |= ATTR_SIZE | ATTR_BLOCKS;
105 ll_ioepoch_close(inode, op_data, &och, 0);
108 ll_pack_inode2opdata(inode, op_data, &och->och_fh);
109 ll_prep_md_op_data(op_data, inode, NULL, NULL,
110 0, 0, LUSTRE_OPC_ANY, NULL);
114 static int ll_close_inode_openhandle(struct obd_export *md_exp,
116 struct obd_client_handle *och)
118 struct obd_export *exp = ll_i2mdexp(inode);
119 struct md_op_data *op_data;
120 struct ptlrpc_request *req = NULL;
121 struct obd_device *obd = class_exp2obd(exp);
128 * XXX: in case of LMV, is this correct to access
131 CERROR("Invalid MDC connection handle "LPX64"\n",
132 ll_i2mdexp(inode)->exp_handle.h_cookie);
136 OBD_ALLOC_PTR(op_data);
138 GOTO(out, rc = -ENOMEM); // XXX We leak openhandle and request here.
140 ll_prepare_close(inode, op_data, och);
141 epoch_close = (op_data->op_flags & MF_EPOCH_CLOSE);
142 rc = md_close(md_exp, op_data, och->och_mod, &req);
144 /* This close must have the epoch closed. */
145 LASSERT(epoch_close);
146 /* MDS has instructed us to obtain Size-on-MDS attribute from
147 * OSTs and send setattr to back to MDS. */
148 rc = ll_som_update(inode, op_data);
150 CERROR("inode %lu mdc Size-on-MDS update failed: "
151 "rc = %d\n", inode->i_ino, rc);
155 CERROR("inode %lu mdc close failed: rc = %d\n",
158 ll_finish_md_op_data(op_data);
161 rc = ll_objects_destroy(req, inode);
163 CERROR("inode %lu ll_objects destroy: rc = %d\n",
170 if (exp_connect_som(exp) && !epoch_close &&
171 S_ISREG(inode->i_mode) && (och->och_flags & FMODE_WRITE)) {
172 ll_queue_done_writing(inode, LLIF_DONE_WRITING);
174 md_clear_open_replay_data(md_exp, och);
175 /* Free @och if it is not waiting for DONE_WRITING. */
176 och->och_fh.cookie = DEAD_HANDLE_MAGIC;
179 if (req) /* This is close request */
180 ptlrpc_req_finished(req);
184 int ll_md_real_close(struct inode *inode, int flags)
186 struct ll_inode_info *lli = ll_i2info(inode);
187 struct obd_client_handle **och_p;
188 struct obd_client_handle *och;
193 if (flags & FMODE_WRITE) {
194 och_p = &lli->lli_mds_write_och;
195 och_usecount = &lli->lli_open_fd_write_count;
196 } else if (flags & FMODE_EXEC) {
197 och_p = &lli->lli_mds_exec_och;
198 och_usecount = &lli->lli_open_fd_exec_count;
200 LASSERT(flags & FMODE_READ);
201 och_p = &lli->lli_mds_read_och;
202 och_usecount = &lli->lli_open_fd_read_count;
205 cfs_mutex_lock(&lli->lli_och_mutex);
206 if (*och_usecount) { /* There are still users of this handle, so
208 cfs_mutex_unlock(&lli->lli_och_mutex);
213 cfs_mutex_unlock(&lli->lli_och_mutex);
215 if (och) { /* There might be a race and somebody have freed this och
217 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
224 int ll_md_close(struct obd_export *md_exp, struct inode *inode,
227 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
228 struct ll_inode_info *lli = ll_i2info(inode);
232 /* clear group lock, if present */
233 if (unlikely(fd->fd_flags & LL_FILE_GROUP_LOCKED))
234 ll_put_grouplock(inode, file, fd->fd_grouplock.cg_gid);
236 /* Let's see if we have good enough OPEN lock on the file and if
237 we can skip talking to MDS */
238 if (file->f_dentry->d_inode) { /* Can this ever be false? */
240 int flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_TEST_LOCK;
241 struct lustre_handle lockh;
242 struct inode *inode = file->f_dentry->d_inode;
243 ldlm_policy_data_t policy = {.l_inodebits={MDS_INODELOCK_OPEN}};
245 cfs_mutex_lock(&lli->lli_och_mutex);
246 if (fd->fd_omode & FMODE_WRITE) {
248 LASSERT(lli->lli_open_fd_write_count);
249 lli->lli_open_fd_write_count--;
250 } else if (fd->fd_omode & FMODE_EXEC) {
252 LASSERT(lli->lli_open_fd_exec_count);
253 lli->lli_open_fd_exec_count--;
256 LASSERT(lli->lli_open_fd_read_count);
257 lli->lli_open_fd_read_count--;
259 cfs_mutex_unlock(&lli->lli_och_mutex);
261 if (!md_lock_match(md_exp, flags, ll_inode2fid(inode),
262 LDLM_IBITS, &policy, lockmode,
264 rc = ll_md_real_close(file->f_dentry->d_inode,
268 CERROR("Releasing a file %p with negative dentry %p. Name %s",
269 file, file->f_dentry, file->f_dentry->d_name.name);
272 LUSTRE_FPRIVATE(file) = NULL;
273 ll_file_data_put(fd);
274 ll_capa_close(inode);
279 int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm);
281 /* While this returns an error code, fput() the caller does not, so we need
282 * to make every effort to clean up all of our state here. Also, applications
283 * rarely check close errors and even if an error is returned they will not
284 * re-try the close call.
286 int ll_file_release(struct inode *inode, struct file *file)
288 struct ll_file_data *fd;
289 struct ll_sb_info *sbi = ll_i2sbi(inode);
290 struct ll_inode_info *lli = ll_i2info(inode);
291 struct lov_stripe_md *lsm = lli->lli_smd;
295 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
296 inode->i_generation, inode);
298 #ifdef CONFIG_FS_POSIX_ACL
299 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
300 inode == inode->i_sb->s_root->d_inode) {
301 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
304 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
305 fd->fd_flags &= ~LL_FILE_RMTACL;
306 rct_del(&sbi->ll_rct, cfs_curproc_pid());
307 et_search_free(&sbi->ll_et, cfs_curproc_pid());
312 if (inode->i_sb->s_root != file->f_dentry)
313 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
314 fd = LUSTRE_FPRIVATE(file);
317 /* The last ref on @file, maybe not the the owner pid of statahead.
318 * Different processes can open the same dir, "ll_opendir_key" means:
319 * it is me that should stop the statahead thread. */
320 if (S_ISDIR(inode->i_mode) && lli->lli_opendir_key == fd &&
321 lli->lli_opendir_pid != 0)
322 ll_stop_statahead(inode, lli->lli_opendir_key);
324 if (inode->i_sb->s_root == file->f_dentry) {
325 LUSTRE_FPRIVATE(file) = NULL;
326 ll_file_data_put(fd);
330 if (!S_ISDIR(inode->i_mode)) {
332 lov_test_and_clear_async_rc(lsm);
333 lli->lli_async_rc = 0;
336 rc = ll_md_close(sbi->ll_md_exp, inode, file);
338 if (CFS_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, cfs_fail_val))
339 libcfs_debug_dumplog();
344 static int ll_intent_file_open(struct file *file, void *lmm,
345 int lmmsize, struct lookup_intent *itp)
347 struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
348 struct dentry *parent = file->f_dentry->d_parent;
349 const char *name = file->f_dentry->d_name.name;
350 const int len = file->f_dentry->d_name.len;
351 struct md_op_data *op_data;
352 struct ptlrpc_request *req;
353 __u32 opc = LUSTRE_OPC_ANY;
360 /* Usually we come here only for NFSD, and we want open lock.
361 But we can also get here with pre 2.6.15 patchless kernels, and in
362 that case that lock is also ok */
363 /* We can also get here if there was cached open handle in revalidate_it
364 * but it disappeared while we were getting from there to ll_file_open.
365 * But this means this file was closed and immediatelly opened which
366 * makes a good candidate for using OPEN lock */
367 /* If lmmsize & lmm are not 0, we are just setting stripe info
368 * parameters. No need for the open lock */
369 if (lmm == NULL && lmmsize == 0) {
370 itp->it_flags |= MDS_OPEN_LOCK;
371 if (itp->it_flags & FMODE_WRITE)
372 opc = LUSTRE_OPC_CREATE;
375 op_data = ll_prep_md_op_data(NULL, parent->d_inode,
376 file->f_dentry->d_inode, name, len,
379 RETURN(PTR_ERR(op_data));
381 rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
382 0 /*unused */, &req, ll_md_blocking_ast, 0);
383 ll_finish_md_op_data(op_data);
385 /* reason for keep own exit path - don`t flood log
386 * with messages with -ESTALE errors.
388 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
389 it_open_error(DISP_OPEN_OPEN, itp))
391 ll_release_openhandle(file->f_dentry, itp);
395 if (it_disposition(itp, DISP_LOOKUP_NEG))
396 GOTO(out, rc = -ENOENT);
398 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
399 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
400 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
404 rc = ll_prep_inode(&file->f_dentry->d_inode, req, NULL);
405 if (!rc && itp->d.lustre.it_lock_mode)
406 ll_set_lock_data(sbi->ll_md_exp, file->f_dentry->d_inode,
410 ptlrpc_req_finished(itp->d.lustre.it_data);
411 it_clear_disposition(itp, DISP_ENQ_COMPLETE);
412 ll_intent_drop_lock(itp);
418 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
419 * not believe attributes if a few ioepoch holders exist. Attributes for
420 * previous ioepoch if new one is opened are also skipped by MDS.
422 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
424 if (ioepoch && lli->lli_ioepoch != ioepoch) {
425 lli->lli_ioepoch = ioepoch;
426 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
427 ioepoch, PFID(&lli->lli_fid));
431 static int ll_och_fill(struct obd_export *md_exp, struct ll_inode_info *lli,
432 struct lookup_intent *it, struct obd_client_handle *och)
434 struct ptlrpc_request *req = it->d.lustre.it_data;
435 struct mdt_body *body;
439 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
440 LASSERT(body != NULL); /* reply already checked out */
442 memcpy(&och->och_fh, &body->handle, sizeof(body->handle));
443 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
444 och->och_fid = lli->lli_fid;
445 och->och_flags = it->it_flags;
446 ll_ioepoch_open(lli, body->ioepoch);
448 return md_set_open_replay_data(md_exp, och, req);
451 int ll_local_open(struct file *file, struct lookup_intent *it,
452 struct ll_file_data *fd, struct obd_client_handle *och)
454 struct inode *inode = file->f_dentry->d_inode;
455 struct ll_inode_info *lli = ll_i2info(inode);
458 LASSERT(!LUSTRE_FPRIVATE(file));
463 struct ptlrpc_request *req = it->d.lustre.it_data;
464 struct mdt_body *body;
467 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, lli, it, och);
471 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
472 if ((it->it_flags & FMODE_WRITE) &&
473 (body->valid & OBD_MD_FLSIZE))
474 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
475 lli->lli_ioepoch, PFID(&lli->lli_fid));
478 LUSTRE_FPRIVATE(file) = fd;
479 ll_readahead_init(inode, &fd->fd_ras);
480 fd->fd_omode = it->it_flags;
484 /* Open a file, and (for the very first open) create objects on the OSTs at
485 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
486 * creation or open until ll_lov_setstripe() ioctl is called.
488 * If we already have the stripe MD locally then we don't request it in
489 * md_open(), by passing a lmm_size = 0.
491 * It is up to the application to ensure no other processes open this file
492 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
493 * used. We might be able to avoid races of that sort by getting lli_open_sem
494 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
495 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
497 int ll_file_open(struct inode *inode, struct file *file)
499 struct ll_inode_info *lli = ll_i2info(inode);
500 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
501 .it_flags = file->f_flags };
502 struct lov_stripe_md *lsm;
503 struct obd_client_handle **och_p = NULL;
504 __u64 *och_usecount = NULL;
505 struct ll_file_data *fd;
506 int rc = 0, opendir_set = 0;
509 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
510 inode->i_generation, inode, file->f_flags);
512 it = file->private_data; /* XXX: compat macro */
513 file->private_data = NULL; /* prevent ll_local_open assertion */
515 fd = ll_file_data_get();
517 GOTO(out_och_free, rc = -ENOMEM);
520 if (S_ISDIR(inode->i_mode)) {
521 cfs_spin_lock(&lli->lli_sa_lock);
522 if (lli->lli_opendir_key == NULL && lli->lli_sai == NULL &&
523 lli->lli_opendir_pid == 0) {
524 lli->lli_opendir_key = fd;
525 lli->lli_opendir_pid = cfs_curproc_pid();
528 cfs_spin_unlock(&lli->lli_sa_lock);
531 if (inode->i_sb->s_root == file->f_dentry) {
532 LUSTRE_FPRIVATE(file) = fd;
536 if (!it || !it->d.lustre.it_disposition) {
537 /* Convert f_flags into access mode. We cannot use file->f_mode,
538 * because everything but O_ACCMODE mask was stripped from
540 if ((oit.it_flags + 1) & O_ACCMODE)
542 if (file->f_flags & O_TRUNC)
543 oit.it_flags |= FMODE_WRITE;
545 /* kernel only call f_op->open in dentry_open. filp_open calls
546 * dentry_open after call to open_namei that checks permissions.
547 * Only nfsd_open call dentry_open directly without checking
548 * permissions and because of that this code below is safe. */
549 if (oit.it_flags & (FMODE_WRITE | FMODE_READ))
550 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
552 /* We do not want O_EXCL here, presumably we opened the file
553 * already? XXX - NFS implications? */
554 oit.it_flags &= ~O_EXCL;
556 /* bug20584, if "it_flags" contains O_CREAT, the file will be
557 * created if necessary, then "IT_CREAT" should be set to keep
558 * consistent with it */
559 if (oit.it_flags & O_CREAT)
560 oit.it_op |= IT_CREAT;
566 /* Let's see if we have file open on MDS already. */
567 if (it->it_flags & FMODE_WRITE) {
568 och_p = &lli->lli_mds_write_och;
569 och_usecount = &lli->lli_open_fd_write_count;
570 } else if (it->it_flags & FMODE_EXEC) {
571 och_p = &lli->lli_mds_exec_och;
572 och_usecount = &lli->lli_open_fd_exec_count;
574 och_p = &lli->lli_mds_read_och;
575 och_usecount = &lli->lli_open_fd_read_count;
578 cfs_mutex_lock(&lli->lli_och_mutex);
579 if (*och_p) { /* Open handle is present */
580 if (it_disposition(it, DISP_OPEN_OPEN)) {
581 /* Well, there's extra open request that we do not need,
582 let's close it somehow. This will decref request. */
583 rc = it_open_error(DISP_OPEN_OPEN, it);
585 cfs_mutex_unlock(&lli->lli_och_mutex);
586 GOTO(out_openerr, rc);
589 ll_release_openhandle(file->f_dentry, it);
593 rc = ll_local_open(file, it, fd, NULL);
596 cfs_mutex_unlock(&lli->lli_och_mutex);
597 GOTO(out_openerr, rc);
600 LASSERT(*och_usecount == 0);
601 if (!it->d.lustre.it_disposition) {
602 /* We cannot just request lock handle now, new ELC code
603 means that one of other OPEN locks for this file
604 could be cancelled, and since blocking ast handler
605 would attempt to grab och_mutex as well, that would
606 result in a deadlock */
607 cfs_mutex_unlock(&lli->lli_och_mutex);
608 it->it_create_mode |= M_CHECK_STALE;
609 rc = ll_intent_file_open(file, NULL, 0, it);
610 it->it_create_mode &= ~M_CHECK_STALE;
612 GOTO(out_openerr, rc);
616 OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
618 GOTO(out_och_free, rc = -ENOMEM);
622 /* md_intent_lock() didn't get a request ref if there was an
623 * open error, so don't do cleanup on the request here
625 /* XXX (green): Should not we bail out on any error here, not
626 * just open error? */
627 rc = it_open_error(DISP_OPEN_OPEN, it);
629 GOTO(out_och_free, rc);
631 LASSERT(it_disposition(it, DISP_ENQ_OPEN_REF));
633 rc = ll_local_open(file, it, fd, *och_p);
635 GOTO(out_och_free, rc);
637 cfs_mutex_unlock(&lli->lli_och_mutex);
640 /* Must do this outside lli_och_mutex lock to prevent deadlock where
641 different kind of OPEN lock for this same inode gets cancelled
642 by ldlm_cancel_lru */
643 if (!S_ISREG(inode->i_mode))
644 GOTO(out_och_free, rc);
650 if (file->f_flags & O_LOV_DELAY_CREATE ||
651 !(file->f_mode & FMODE_WRITE)) {
652 CDEBUG(D_INODE, "object creation was delayed\n");
653 GOTO(out_och_free, rc);
656 file->f_flags &= ~O_LOV_DELAY_CREATE;
657 GOTO(out_och_free, rc);
660 if (it && it_disposition(it, DISP_ENQ_OPEN_REF)) {
661 ptlrpc_req_finished(it->d.lustre.it_data);
662 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
666 if (och_p && *och_p) {
667 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
668 *och_p = NULL; /* OBD_FREE writes some magic there */
671 cfs_mutex_unlock(&lli->lli_och_mutex);
674 if (opendir_set != 0)
675 ll_stop_statahead(inode, lli->lli_opendir_key);
677 ll_file_data_put(fd);
679 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
685 /* Fills the obdo with the attributes for the lsm */
686 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
687 struct obd_capa *capa, struct obdo *obdo,
688 __u64 ioepoch, int sync)
690 struct ptlrpc_request_set *set;
691 struct obd_info oinfo = { { { 0 } } };
696 LASSERT(lsm != NULL);
700 oinfo.oi_oa->o_id = lsm->lsm_object_id;
701 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
702 oinfo.oi_oa->o_mode = S_IFREG;
703 oinfo.oi_oa->o_ioepoch = ioepoch;
704 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
705 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
706 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
707 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
708 OBD_MD_FLGROUP | OBD_MD_FLEPOCH |
709 OBD_MD_FLDATAVERSION;
710 oinfo.oi_capa = capa;
712 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
713 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
716 set = ptlrpc_prep_set();
718 CERROR("can't allocate ptlrpc set\n");
721 rc = obd_getattr_async(exp, &oinfo, set);
723 rc = ptlrpc_set_wait(set);
724 ptlrpc_set_destroy(set);
727 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
728 OBD_MD_FLATIME | OBD_MD_FLMTIME |
729 OBD_MD_FLCTIME | OBD_MD_FLSIZE |
730 OBD_MD_FLDATAVERSION);
735 * Performs the getattr on the inode and updates its fields.
736 * If @sync != 0, perform the getattr under the server-side lock.
738 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
739 __u64 ioepoch, int sync)
741 struct ll_inode_info *lli = ll_i2info(inode);
742 struct obd_capa *capa = ll_mdscapa_get(inode);
746 rc = ll_lsm_getattr(lli->lli_smd, ll_i2dtexp(inode),
747 capa, obdo, ioepoch, sync);
750 obdo_refresh_inode(inode, obdo, obdo->o_valid);
752 "objid "LPX64" size %llu, blocks %llu, blksize %lu\n",
753 lli->lli_smd->lsm_object_id, i_size_read(inode),
754 (unsigned long long)inode->i_blocks,
755 (unsigned long)ll_inode_blksize(inode));
760 int ll_merge_lvb(struct inode *inode)
762 struct ll_inode_info *lli = ll_i2info(inode);
763 struct ll_sb_info *sbi = ll_i2sbi(inode);
769 ll_inode_size_lock(inode, 1);
770 inode_init_lvb(inode, &lvb);
772 /* merge timestamps the most resently obtained from mds with
773 timestamps obtained from osts */
774 lvb.lvb_atime = lli->lli_lvb.lvb_atime;
775 lvb.lvb_mtime = lli->lli_lvb.lvb_mtime;
776 lvb.lvb_ctime = lli->lli_lvb.lvb_ctime;
777 rc = obd_merge_lvb(sbi->ll_dt_exp, lli->lli_smd, &lvb, 0);
778 cl_isize_write_nolock(inode, lvb.lvb_size);
780 CDEBUG(D_VFSTRACE, DFID" updating i_size "LPU64"\n",
781 PFID(&lli->lli_fid), lvb.lvb_size);
782 inode->i_blocks = lvb.lvb_blocks;
784 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
785 LTIME_S(inode->i_atime) = lvb.lvb_atime;
786 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
787 ll_inode_size_unlock(inode, 1);
792 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
795 struct obdo obdo = { 0 };
798 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
800 st->st_size = obdo.o_size;
801 st->st_blocks = obdo.o_blocks;
802 st->st_mtime = obdo.o_mtime;
803 st->st_atime = obdo.o_atime;
804 st->st_ctime = obdo.o_ctime;
809 void ll_io_init(struct cl_io *io, const struct file *file, int write)
811 struct inode *inode = file->f_dentry->d_inode;
813 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
815 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
816 io->ci_obj = ll_i2info(inode)->lli_clob;
817 io->ci_lockreq = CILR_MAYBE;
818 if (ll_file_nolock(file)) {
819 io->ci_lockreq = CILR_NEVER;
820 io->ci_no_srvlock = 1;
821 } else if (file->f_flags & O_APPEND) {
822 io->ci_lockreq = CILR_MANDATORY;
826 static ssize_t ll_file_io_generic(const struct lu_env *env,
827 struct vvp_io_args *args, struct file *file,
828 enum cl_io_type iot, loff_t *ppos, size_t count)
830 struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
835 io = ccc_env_thread_io(env);
836 ll_io_init(io, file, iot == CIT_WRITE);
838 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
839 struct vvp_io *vio = vvp_env_io(env);
840 struct ccc_io *cio = ccc_env_io(env);
841 int write_mutex_locked = 0;
843 cio->cui_fd = LUSTRE_FPRIVATE(file);
844 vio->cui_io_subtype = args->via_io_subtype;
846 switch (vio->cui_io_subtype) {
848 cio->cui_iov = args->u.normal.via_iov;
849 cio->cui_nrsegs = args->u.normal.via_nrsegs;
850 cio->cui_tot_nrsegs = cio->cui_nrsegs;
851 #ifndef HAVE_FILE_WRITEV
852 cio->cui_iocb = args->u.normal.via_iocb;
854 if ((iot == CIT_WRITE) &&
855 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
856 if (cfs_mutex_lock_interruptible(&lli->
858 GOTO(out, result = -ERESTARTSYS);
859 write_mutex_locked = 1;
860 } else if (iot == CIT_READ) {
861 cfs_down_read(&lli->lli_trunc_sem);
865 vio->u.sendfile.cui_actor = args->u.sendfile.via_actor;
866 vio->u.sendfile.cui_target = args->u.sendfile.via_target;
869 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
870 vio->u.splice.cui_flags = args->u.splice.via_flags;
873 CERROR("Unknow IO type - %u\n", vio->cui_io_subtype);
876 result = cl_io_loop(env, io);
877 if (write_mutex_locked)
878 cfs_mutex_unlock(&lli->lli_write_mutex);
879 else if (args->via_io_subtype == IO_NORMAL && iot == CIT_READ)
880 cfs_up_read(&lli->lli_trunc_sem);
882 /* cl_io_rw_init() handled IO */
883 result = io->ci_result;
886 if (io->ci_nob > 0) {
888 *ppos = io->u.ci_wr.wr.crw_pos;
894 if (iot == CIT_READ) {
896 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
897 LPROC_LL_READ_BYTES, result);
898 } else if (iot == CIT_WRITE) {
900 ll_stats_ops_tally(ll_i2sbi(file->f_dentry->d_inode),
901 LPROC_LL_WRITE_BYTES, result);
902 lli->lli_write_rc = 0;
904 lli->lli_write_rc = result;
913 * XXX: exact copy from kernel code (__generic_file_aio_write_nolock)
915 static int ll_file_get_iov_count(const struct iovec *iov,
916 unsigned long *nr_segs, size_t *count)
921 for (seg = 0; seg < *nr_segs; seg++) {
922 const struct iovec *iv = &iov[seg];
925 * If any segment has a negative length, or the cumulative
926 * length ever wraps negative then return -EINVAL.
929 if (unlikely((ssize_t)(cnt|iv->iov_len) < 0))
931 if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
936 cnt -= iv->iov_len; /* This segment is no good */
943 #ifdef HAVE_FILE_READV
944 static ssize_t ll_file_readv(struct file *file, const struct iovec *iov,
945 unsigned long nr_segs, loff_t *ppos)
948 struct vvp_io_args *args;
954 result = ll_file_get_iov_count(iov, &nr_segs, &count);
958 env = cl_env_get(&refcheck);
960 RETURN(PTR_ERR(env));
962 args = vvp_env_args(env, IO_NORMAL);
963 args->u.normal.via_iov = (struct iovec *)iov;
964 args->u.normal.via_nrsegs = nr_segs;
966 result = ll_file_io_generic(env, args, file, CIT_READ, ppos, count);
967 cl_env_put(env, &refcheck);
971 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
975 struct iovec *local_iov;
980 env = cl_env_get(&refcheck);
982 RETURN(PTR_ERR(env));
984 local_iov = &vvp_env_info(env)->vti_local_iov;
985 local_iov->iov_base = (void __user *)buf;
986 local_iov->iov_len = count;
987 result = ll_file_readv(file, local_iov, 1, ppos);
988 cl_env_put(env, &refcheck);
993 static ssize_t ll_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
994 unsigned long nr_segs, loff_t pos)
997 struct vvp_io_args *args;
1003 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1007 env = cl_env_get(&refcheck);
1009 RETURN(PTR_ERR(env));
1011 args = vvp_env_args(env, IO_NORMAL);
1012 args->u.normal.via_iov = (struct iovec *)iov;
1013 args->u.normal.via_nrsegs = nr_segs;
1014 args->u.normal.via_iocb = iocb;
1016 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
1017 &iocb->ki_pos, count);
1018 cl_env_put(env, &refcheck);
1022 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
1026 struct iovec *local_iov;
1027 struct kiocb *kiocb;
1032 env = cl_env_get(&refcheck);
1034 RETURN(PTR_ERR(env));
1036 local_iov = &vvp_env_info(env)->vti_local_iov;
1037 kiocb = &vvp_env_info(env)->vti_kiocb;
1038 local_iov->iov_base = (void __user *)buf;
1039 local_iov->iov_len = count;
1040 init_sync_kiocb(kiocb, file);
1041 kiocb->ki_pos = *ppos;
1042 kiocb->ki_left = count;
1044 result = ll_file_aio_read(kiocb, local_iov, 1, kiocb->ki_pos);
1045 *ppos = kiocb->ki_pos;
1047 cl_env_put(env, &refcheck);
1053 * Write to a file (through the page cache).
1055 #ifdef HAVE_FILE_WRITEV
1056 static ssize_t ll_file_writev(struct file *file, const struct iovec *iov,
1057 unsigned long nr_segs, loff_t *ppos)
1060 struct vvp_io_args *args;
1066 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1070 env = cl_env_get(&refcheck);
1072 RETURN(PTR_ERR(env));
1074 args = vvp_env_args(env, IO_NORMAL);
1075 args->u.normal.via_iov = (struct iovec *)iov;
1076 args->u.normal.via_nrsegs = nr_segs;
1078 result = ll_file_io_generic(env, args, file, CIT_WRITE, ppos, count);
1079 cl_env_put(env, &refcheck);
1083 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1087 struct iovec *local_iov;
1092 env = cl_env_get(&refcheck);
1094 RETURN(PTR_ERR(env));
1096 local_iov = &vvp_env_info(env)->vti_local_iov;
1097 local_iov->iov_base = (void __user *)buf;
1098 local_iov->iov_len = count;
1100 result = ll_file_writev(file, local_iov, 1, ppos);
1101 cl_env_put(env, &refcheck);
1105 #else /* AIO stuff */
1106 static ssize_t ll_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
1107 unsigned long nr_segs, loff_t pos)
1110 struct vvp_io_args *args;
1116 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1120 env = cl_env_get(&refcheck);
1122 RETURN(PTR_ERR(env));
1124 args = vvp_env_args(env, IO_NORMAL);
1125 args->u.normal.via_iov = (struct iovec *)iov;
1126 args->u.normal.via_nrsegs = nr_segs;
1127 args->u.normal.via_iocb = iocb;
1129 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1130 &iocb->ki_pos, count);
1131 cl_env_put(env, &refcheck);
1135 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1139 struct iovec *local_iov;
1140 struct kiocb *kiocb;
1145 env = cl_env_get(&refcheck);
1147 RETURN(PTR_ERR(env));
1149 local_iov = &vvp_env_info(env)->vti_local_iov;
1150 kiocb = &vvp_env_info(env)->vti_kiocb;
1151 local_iov->iov_base = (void __user *)buf;
1152 local_iov->iov_len = count;
1153 init_sync_kiocb(kiocb, file);
1154 kiocb->ki_pos = *ppos;
1155 kiocb->ki_left = count;
1157 result = ll_file_aio_write(kiocb, local_iov, 1, kiocb->ki_pos);
1158 *ppos = kiocb->ki_pos;
1160 cl_env_put(env, &refcheck);
1166 #ifdef HAVE_KERNEL_SENDFILE
1168 * Send file content (through pagecache) somewhere with helper
1170 static ssize_t ll_file_sendfile(struct file *in_file, loff_t *ppos,size_t count,
1171 read_actor_t actor, void *target)
1174 struct vvp_io_args *args;
1179 env = cl_env_get(&refcheck);
1181 RETURN(PTR_ERR(env));
1183 args = vvp_env_args(env, IO_SENDFILE);
1184 args->u.sendfile.via_target = target;
1185 args->u.sendfile.via_actor = actor;
1187 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1188 cl_env_put(env, &refcheck);
1193 #ifdef HAVE_KERNEL_SPLICE_READ
1195 * Send file content (through pagecache) somewhere with helper
1197 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1198 struct pipe_inode_info *pipe, size_t count,
1202 struct vvp_io_args *args;
1207 env = cl_env_get(&refcheck);
1209 RETURN(PTR_ERR(env));
1211 args = vvp_env_args(env, IO_SPLICE);
1212 args->u.splice.via_pipe = pipe;
1213 args->u.splice.via_flags = flags;
1215 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1216 cl_env_put(env, &refcheck);
1221 static int ll_lov_recreate(struct inode *inode, obd_id id, obd_seq seq,
1224 struct obd_export *exp = ll_i2dtexp(inode);
1225 struct obd_trans_info oti = { 0 };
1226 struct obdo *oa = NULL;
1229 struct lov_stripe_md *lsm, *lsm2;
1236 ll_inode_size_lock(inode, 0);
1237 lsm = ll_i2info(inode)->lli_smd;
1239 GOTO(out, rc = -ENOENT);
1240 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1241 (lsm->lsm_stripe_count));
1243 OBD_ALLOC_LARGE(lsm2, lsm_size);
1245 GOTO(out, rc = -ENOMEM);
1249 oa->o_nlink = ost_idx;
1250 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1251 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1252 obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
1253 OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1254 obdo_set_parent_fid(oa, &ll_i2info(inode)->lli_fid);
1255 memcpy(lsm2, lsm, lsm_size);
1256 rc = obd_create(exp, oa, &lsm2, &oti);
1258 OBD_FREE_LARGE(lsm2, lsm_size);
1261 ll_inode_size_unlock(inode, 0);
1266 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1268 struct ll_recreate_obj ucreat;
1271 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1274 if (cfs_copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1275 sizeof(struct ll_recreate_obj)))
1278 RETURN(ll_lov_recreate(inode, ucreat.lrc_id, 0,
1279 ucreat.lrc_ost_idx));
1282 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1289 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1292 if (cfs_copy_from_user(&fid, (struct lu_fid *)arg,
1293 sizeof(struct lu_fid)))
1296 id = fid_oid(&fid) | ((fid_seq(&fid) & 0xffff) << 32);
1297 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1298 RETURN(ll_lov_recreate(inode, id, 0, ost_idx));
1301 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
1302 int flags, struct lov_user_md *lum, int lum_size)
1304 struct lov_stripe_md *lsm;
1305 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1309 ll_inode_size_lock(inode, 0);
1310 lsm = ll_i2info(inode)->lli_smd;
1312 ll_inode_size_unlock(inode, 0);
1313 CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
1318 rc = ll_intent_file_open(file, lum, lum_size, &oit);
1321 rc = oit.d.lustre.it_status;
1323 GOTO(out_req_free, rc);
1325 ll_release_openhandle(file->f_dentry, &oit);
1328 ll_inode_size_unlock(inode, 0);
1329 ll_intent_release(&oit);
1332 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1336 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1337 struct lov_mds_md **lmmp, int *lmm_size,
1338 struct ptlrpc_request **request)
1340 struct ll_sb_info *sbi = ll_i2sbi(inode);
1341 struct mdt_body *body;
1342 struct lov_mds_md *lmm = NULL;
1343 struct ptlrpc_request *req = NULL;
1344 struct md_op_data *op_data;
1347 rc = ll_get_max_mdsize(sbi, &lmmsize);
1351 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1352 strlen(filename), lmmsize,
1353 LUSTRE_OPC_ANY, NULL);
1354 if (IS_ERR(op_data))
1355 RETURN(PTR_ERR(op_data));
1357 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1358 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1359 ll_finish_md_op_data(op_data);
1361 CDEBUG(D_INFO, "md_getattr_name failed "
1362 "on %s: rc %d\n", filename, rc);
1366 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1367 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1369 lmmsize = body->eadatasize;
1371 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1373 GOTO(out, rc = -ENODATA);
1376 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1377 LASSERT(lmm != NULL);
1379 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1380 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1381 GOTO(out, rc = -EPROTO);
1385 * This is coming from the MDS, so is probably in
1386 * little endian. We convert it to host endian before
1387 * passing it to userspace.
1389 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1390 /* if function called for directory - we should
1391 * avoid swab not existent lsm objects */
1392 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1393 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1394 if (S_ISREG(body->mode))
1395 lustre_swab_lov_user_md_objects(
1396 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1397 ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count);
1398 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1399 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1400 if (S_ISREG(body->mode))
1401 lustre_swab_lov_user_md_objects(
1402 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1403 ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
1409 *lmm_size = lmmsize;
1414 static int ll_lov_setea(struct inode *inode, struct file *file,
1417 int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1418 struct lov_user_md *lump;
1419 int lum_size = sizeof(struct lov_user_md) +
1420 sizeof(struct lov_user_ost_data);
1424 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1427 OBD_ALLOC_LARGE(lump, lum_size);
1431 if (cfs_copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1432 OBD_FREE_LARGE(lump, lum_size);
1436 rc = ll_lov_setstripe_ea_info(inode, file, flags, lump, lum_size);
1438 OBD_FREE_LARGE(lump, lum_size);
1442 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1445 struct lov_user_md_v3 lumv3;
1446 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1447 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1448 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1451 int flags = FMODE_WRITE;
1454 /* first try with v1 which is smaller than v3 */
1455 lum_size = sizeof(struct lov_user_md_v1);
1456 if (cfs_copy_from_user(lumv1, lumv1p, lum_size))
1459 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1460 lum_size = sizeof(struct lov_user_md_v3);
1461 if (cfs_copy_from_user(&lumv3, lumv3p, lum_size))
1465 rc = ll_lov_setstripe_ea_info(inode, file, flags, lumv1, lum_size);
1467 put_user(0, &lumv1p->lmm_stripe_count);
1468 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1469 0, ll_i2info(inode)->lli_smd,
1475 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1477 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1482 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0,
1487 int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1489 struct ll_inode_info *lli = ll_i2info(inode);
1490 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1491 struct ccc_grouplock grouplock;
1495 if (ll_file_nolock(file))
1496 RETURN(-EOPNOTSUPP);
1498 cfs_spin_lock(&lli->lli_lock);
1499 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1500 CWARN("group lock already existed with gid %lu\n",
1501 fd->fd_grouplock.cg_gid);
1502 cfs_spin_unlock(&lli->lli_lock);
1505 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1506 cfs_spin_unlock(&lli->lli_lock);
1508 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1509 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1513 cfs_spin_lock(&lli->lli_lock);
1514 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1515 cfs_spin_unlock(&lli->lli_lock);
1516 CERROR("another thread just won the race\n");
1517 cl_put_grouplock(&grouplock);
1521 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1522 fd->fd_grouplock = grouplock;
1523 cfs_spin_unlock(&lli->lli_lock);
1525 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1529 int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1531 struct ll_inode_info *lli = ll_i2info(inode);
1532 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1533 struct ccc_grouplock grouplock;
1536 cfs_spin_lock(&lli->lli_lock);
1537 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1538 cfs_spin_unlock(&lli->lli_lock);
1539 CWARN("no group lock held\n");
1542 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1544 if (fd->fd_grouplock.cg_gid != arg) {
1545 CWARN("group lock %lu doesn't match current id %lu\n",
1546 arg, fd->fd_grouplock.cg_gid);
1547 cfs_spin_unlock(&lli->lli_lock);
1551 grouplock = fd->fd_grouplock;
1552 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1553 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1554 cfs_spin_unlock(&lli->lli_lock);
1556 cl_put_grouplock(&grouplock);
1557 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1562 * Close inode open handle
1564 * \param dentry [in] dentry which contains the inode
1565 * \param it [in,out] intent which contains open info and result
1568 * \retval <0 failure
1570 int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
1572 struct inode *inode = dentry->d_inode;
1573 struct obd_client_handle *och;
1579 /* Root ? Do nothing. */
1580 if (dentry->d_inode->i_sb->s_root == dentry)
1583 /* No open handle to close? Move away */
1584 if (!it_disposition(it, DISP_OPEN_OPEN))
1587 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1589 OBD_ALLOC(och, sizeof(*och));
1591 GOTO(out, rc = -ENOMEM);
1593 ll_och_fill(ll_i2sbi(inode)->ll_md_exp,
1594 ll_i2info(inode), it, och);
1596 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1599 /* this one is in place of ll_file_open */
1600 if (it_disposition(it, DISP_ENQ_OPEN_REF)) {
1601 ptlrpc_req_finished(it->d.lustre.it_data);
1602 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1608 * Get size for inode for which FIEMAP mapping is requested.
1609 * Make the FIEMAP get_info call and returns the result.
1611 int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1614 struct obd_export *exp = ll_i2dtexp(inode);
1615 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1616 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1617 int vallen = num_bytes;
1621 /* Checks for fiemap flags */
1622 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1623 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1627 /* Check for FIEMAP_FLAG_SYNC */
1628 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1629 rc = filemap_fdatawrite(inode->i_mapping);
1634 /* If the stripe_count > 1 and the application does not understand
1635 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1637 if (lsm->lsm_stripe_count > 1 &&
1638 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER))
1641 fm_key.oa.o_id = lsm->lsm_object_id;
1642 fm_key.oa.o_seq = lsm->lsm_object_seq;
1643 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1645 obdo_from_inode(&fm_key.oa, inode, OBD_MD_FLSIZE);
1646 obdo_set_parent_fid(&fm_key.oa, &ll_i2info(inode)->lli_fid);
1647 /* If filesize is 0, then there would be no objects for mapping */
1648 if (fm_key.oa.o_size == 0) {
1649 fiemap->fm_mapped_extents = 0;
1653 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1655 rc = obd_get_info(exp, sizeof(fm_key), &fm_key, &vallen, fiemap, lsm);
1657 CERROR("obd_get_info failed: rc = %d\n", rc);
1662 int ll_fid2path(struct obd_export *exp, void *arg)
1664 struct getinfo_fid2path *gfout, *gfin;
1668 /* Need to get the buflen */
1669 OBD_ALLOC_PTR(gfin);
1672 if (cfs_copy_from_user(gfin, arg, sizeof(*gfin))) {
1677 outsize = sizeof(*gfout) + gfin->gf_pathlen;
1678 OBD_ALLOC(gfout, outsize);
1679 if (gfout == NULL) {
1683 memcpy(gfout, gfin, sizeof(*gfout));
1686 /* Call mdc_iocontrol */
1687 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1690 if (cfs_copy_to_user(arg, gfout, outsize))
1694 OBD_FREE(gfout, outsize);
1698 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1700 struct ll_user_fiemap *fiemap_s;
1701 size_t num_bytes, ret_bytes;
1702 unsigned int extent_count;
1705 /* Get the extent count so we can calculate the size of
1706 * required fiemap buffer */
1707 if (get_user(extent_count,
1708 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1710 num_bytes = sizeof(*fiemap_s) + (extent_count *
1711 sizeof(struct ll_fiemap_extent));
1713 OBD_ALLOC_LARGE(fiemap_s, num_bytes);
1714 if (fiemap_s == NULL)
1717 /* get the fiemap value */
1718 if (copy_from_user(fiemap_s,(struct ll_user_fiemap __user *)arg,
1720 GOTO(error, rc = -EFAULT);
1722 /* If fm_extent_count is non-zero, read the first extent since
1723 * it is used to calculate end_offset and device from previous
1726 if (copy_from_user(&fiemap_s->fm_extents[0],
1727 (char __user *)arg + sizeof(*fiemap_s),
1728 sizeof(struct ll_fiemap_extent)))
1729 GOTO(error, rc = -EFAULT);
1732 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1736 ret_bytes = sizeof(struct ll_user_fiemap);
1738 if (extent_count != 0)
1739 ret_bytes += (fiemap_s->fm_mapped_extents *
1740 sizeof(struct ll_fiemap_extent));
1742 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1746 OBD_FREE_LARGE(fiemap_s, num_bytes);
1751 * Read the data_version for inode.
1753 * This value is computed using stripe object version on OST.
1754 * Version is computed using server side locking.
1756 * @param extent_lock Take extent lock. Not needed if a process is already
1757 * holding the OST object group locks.
1759 static int ll_data_version(struct inode *inode, __u64 *data_version,
1762 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1763 struct ll_sb_info *sbi = ll_i2sbi(inode);
1764 struct obdo *obdo = NULL;
1768 /* If no stripe, we consider version is 0. */
1771 CDEBUG(D_INODE, "No object for inode\n");
1775 OBD_ALLOC_PTR(obdo);
1779 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, obdo, 0, extent_lock);
1781 if (!(obdo->o_valid & OBD_MD_FLDATAVERSION))
1784 *data_version = obdo->o_data_version;
1792 #ifdef HAVE_UNLOCKED_IOCTL
1793 long ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1795 struct inode *inode = file->f_dentry->d_inode;
1797 int ll_file_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1801 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1806 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
1807 inode->i_generation, inode, cmd);
1808 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1810 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1811 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1815 case LL_IOC_GETFLAGS:
1816 /* Get the current value of the file flags */
1817 return put_user(fd->fd_flags, (int *)arg);
1818 case LL_IOC_SETFLAGS:
1819 case LL_IOC_CLRFLAGS:
1820 /* Set or clear specific file flags */
1821 /* XXX This probably needs checks to ensure the flags are
1822 * not abused, and to handle any flag side effects.
1824 if (get_user(flags, (int *) arg))
1827 if (cmd == LL_IOC_SETFLAGS) {
1828 if ((flags & LL_FILE_IGNORE_LOCK) &&
1829 !(file->f_flags & O_DIRECT)) {
1830 CERROR("%s: unable to disable locking on "
1831 "non-O_DIRECT file\n", current->comm);
1835 fd->fd_flags |= flags;
1837 fd->fd_flags &= ~flags;
1840 case LL_IOC_LOV_SETSTRIPE:
1841 RETURN(ll_lov_setstripe(inode, file, arg));
1842 case LL_IOC_LOV_SETEA:
1843 RETURN(ll_lov_setea(inode, file, arg));
1844 case LL_IOC_LOV_GETSTRIPE:
1845 RETURN(ll_lov_getstripe(inode, arg));
1846 case LL_IOC_RECREATE_OBJ:
1847 RETURN(ll_lov_recreate_obj(inode, arg));
1848 case LL_IOC_RECREATE_FID:
1849 RETURN(ll_lov_recreate_fid(inode, arg));
1850 case FSFILT_IOC_FIEMAP:
1851 RETURN(ll_ioctl_fiemap(inode, arg));
1852 case FSFILT_IOC_GETFLAGS:
1853 case FSFILT_IOC_SETFLAGS:
1854 RETURN(ll_iocontrol(inode, file, cmd, arg));
1855 case FSFILT_IOC_GETVERSION_OLD:
1856 case FSFILT_IOC_GETVERSION:
1857 RETURN(put_user(inode->i_generation, (int *)arg));
1858 case LL_IOC_GROUP_LOCK:
1859 RETURN(ll_get_grouplock(inode, file, arg));
1860 case LL_IOC_GROUP_UNLOCK:
1861 RETURN(ll_put_grouplock(inode, file, arg));
1862 case IOC_OBD_STATFS:
1863 RETURN(ll_obd_statfs(inode, (void *)arg));
1865 /* We need to special case any other ioctls we want to handle,
1866 * to send them to the MDS/OST as appropriate and to properly
1867 * network encode the arg field.
1868 case FSFILT_IOC_SETVERSION_OLD:
1869 case FSFILT_IOC_SETVERSION:
1871 case LL_IOC_FLUSHCTX:
1872 RETURN(ll_flush_ctx(inode));
1873 case LL_IOC_PATH2FID: {
1874 if (cfs_copy_to_user((void *)arg, ll_inode2fid(inode),
1875 sizeof(struct lu_fid)))
1880 case OBD_IOC_FID2PATH:
1881 RETURN(ll_fid2path(ll_i2mdexp(inode), (void *)arg));
1882 case LL_IOC_DATA_VERSION: {
1883 struct ioc_data_version idv;
1886 if (cfs_copy_from_user(&idv, (char *)arg, sizeof(idv)))
1889 rc = ll_data_version(inode, &idv.idv_version,
1890 !(idv.idv_flags & LL_DV_NOFLUSH));
1893 cfs_copy_to_user((char *) arg, &idv, sizeof(idv)))
1899 case LL_IOC_GET_MDTIDX: {
1902 mdtidx = ll_get_mdt_idx(inode);
1906 if (put_user((int)mdtidx, (int*)arg))
1911 case OBD_IOC_GETDTNAME:
1912 case OBD_IOC_GETMDNAME:
1913 RETURN(ll_get_obd_name(inode, cmd, arg));
1918 ll_iocontrol_call(inode, file, cmd, arg, &err))
1921 RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
1927 loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
1929 struct inode *inode = file->f_dentry->d_inode;
1932 retval = offset + ((origin == 2) ? i_size_read(inode) :
1933 (origin == 1) ? file->f_pos : 0);
1934 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%llu=%#llx(%s)\n",
1935 inode->i_ino, inode->i_generation, inode, retval, retval,
1936 origin == 2 ? "SEEK_END": origin == 1 ? "SEEK_CUR" : "SEEK_SET");
1937 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
1939 if (origin == 2) { /* SEEK_END */
1942 rc = ll_glimpse_size(inode);
1946 offset += i_size_read(inode);
1947 } else if (origin == 1) { /* SEEK_CUR */
1948 offset += file->f_pos;
1952 if (offset >= 0 && offset <= ll_file_maxbytes(inode)) {
1953 if (offset != file->f_pos) {
1954 file->f_pos = offset;
1962 #ifdef HAVE_FLUSH_OWNER_ID
1963 int ll_flush(struct file *file, fl_owner_t id)
1965 int ll_flush(struct file *file)
1968 struct inode *inode = file->f_dentry->d_inode;
1969 struct ll_inode_info *lli = ll_i2info(inode);
1970 struct lov_stripe_md *lsm = lli->lli_smd;
1973 LASSERT(!S_ISDIR(inode->i_mode));
1975 /* the application should know write failure already. */
1976 if (lli->lli_write_rc)
1979 /* catch async errors that were recorded back when async writeback
1980 * failed for pages in this mapping. */
1981 rc = lli->lli_async_rc;
1982 lli->lli_async_rc = 0;
1984 err = lov_test_and_clear_async_rc(lsm);
1989 return rc ? -EIO : 0;
1992 #ifdef HAVE_FILE_FSYNC_4ARGS
1993 int ll_fsync(struct file *file, loff_t start, loff_t end, int data)
1994 #elif defined(HAVE_FILE_FSYNC_2ARGS)
1995 int ll_fsync(struct file *file, int data)
1997 int ll_fsync(struct file *file, struct dentry *dentry, int data)
2000 struct inode *inode = file->f_dentry->d_inode;
2001 struct ll_inode_info *lli = ll_i2info(inode);
2002 struct lov_stripe_md *lsm = lli->lli_smd;
2003 struct ptlrpc_request *req;
2004 struct obd_capa *oc;
2007 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
2008 inode->i_generation, inode);
2009 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
2011 /* fsync's caller has already called _fdata{sync,write}, we want
2012 * that IO to finish before calling the osc and mdc sync methods */
2013 rc = filemap_fdatawait(inode->i_mapping);
2015 /* catch async errors that were recorded back when async writeback
2016 * failed for pages in this mapping. */
2017 if (!S_ISDIR(inode->i_mode)) {
2018 err = lli->lli_async_rc;
2019 lli->lli_async_rc = 0;
2023 err = lov_test_and_clear_async_rc(lsm);
2029 oc = ll_mdscapa_get(inode);
2030 err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
2036 ptlrpc_req_finished(req);
2039 struct obd_info *oinfo;
2041 OBD_ALLOC_PTR(oinfo);
2043 RETURN(rc ? rc : -ENOMEM);
2044 OBDO_ALLOC(oinfo->oi_oa);
2045 if (!oinfo->oi_oa) {
2046 OBD_FREE_PTR(oinfo);
2047 RETURN(rc ? rc : -ENOMEM);
2049 oinfo->oi_oa->o_id = lsm->lsm_object_id;
2050 oinfo->oi_oa->o_seq = lsm->lsm_object_seq;
2051 oinfo->oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2052 obdo_from_inode(oinfo->oi_oa, inode,
2053 OBD_MD_FLTYPE | OBD_MD_FLATIME |
2054 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
2056 obdo_set_parent_fid(oinfo->oi_oa, &ll_i2info(inode)->lli_fid);
2058 oinfo->oi_capa = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
2059 err = obd_sync_rqset(ll_i2sbi(inode)->ll_dt_exp, oinfo, 0,
2061 capa_put(oinfo->oi_capa);
2064 OBDO_FREE(oinfo->oi_oa);
2065 OBD_FREE_PTR(oinfo);
2066 lli->lli_write_rc = rc < 0 ? rc : 0;
2072 int ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
2074 struct inode *inode = file->f_dentry->d_inode;
2075 struct ll_sb_info *sbi = ll_i2sbi(inode);
2076 struct ldlm_enqueue_info einfo = { .ei_type = LDLM_FLOCK,
2077 .ei_cb_cp =ldlm_flock_completion_ast,
2078 .ei_cbdata = file_lock };
2079 struct md_op_data *op_data;
2080 struct lustre_handle lockh = {0};
2081 ldlm_policy_data_t flock = {{0}};
2086 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
2087 inode->i_ino, file_lock);
2089 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
2091 if (file_lock->fl_flags & FL_FLOCK) {
2092 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
2093 /* flocks are whole-file locks */
2094 flock.l_flock.end = OFFSET_MAX;
2095 /* For flocks owner is determined by the local file desctiptor*/
2096 flock.l_flock.owner = (unsigned long)file_lock->fl_file;
2097 } else if (file_lock->fl_flags & FL_POSIX) {
2098 flock.l_flock.owner = (unsigned long)file_lock->fl_owner;
2099 flock.l_flock.start = file_lock->fl_start;
2100 flock.l_flock.end = file_lock->fl_end;
2104 flock.l_flock.pid = file_lock->fl_pid;
2106 /* Somewhat ugly workaround for svc lockd.
2107 * lockd installs custom fl_lmops->fl_compare_owner that checks
2108 * for the fl_owner to be the same (which it always is on local node
2109 * I guess between lockd processes) and then compares pid.
2110 * As such we assign pid to the owner field to make it all work,
2111 * conflict with normal locks is unlikely since pid space and
2112 * pointer space for current->files are not intersecting */
2113 if (file_lock->fl_lmops && file_lock->fl_lmops->fl_compare_owner)
2114 flock.l_flock.owner = (unsigned long)file_lock->fl_pid;
2116 switch (file_lock->fl_type) {
2118 einfo.ei_mode = LCK_PR;
2121 /* An unlock request may or may not have any relation to
2122 * existing locks so we may not be able to pass a lock handle
2123 * via a normal ldlm_lock_cancel() request. The request may even
2124 * unlock a byte range in the middle of an existing lock. In
2125 * order to process an unlock request we need all of the same
2126 * information that is given with a normal read or write record
2127 * lock request. To avoid creating another ldlm unlock (cancel)
2128 * message we'll treat a LCK_NL flock request as an unlock. */
2129 einfo.ei_mode = LCK_NL;
2132 einfo.ei_mode = LCK_PW;
2135 CDEBUG(D_INFO, "Unknown fcntl lock type: %d\n",
2136 file_lock->fl_type);
2151 flags = LDLM_FL_BLOCK_NOWAIT;
2157 flags = LDLM_FL_TEST_LOCK;
2158 /* Save the old mode so that if the mode in the lock changes we
2159 * can decrement the appropriate reader or writer refcount. */
2160 file_lock->fl_type = einfo.ei_mode;
2163 CERROR("unknown fcntl lock command: %d\n", cmd);
2167 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2168 LUSTRE_OPC_ANY, NULL);
2169 if (IS_ERR(op_data))
2170 RETURN(PTR_ERR(op_data));
2172 CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#x, mode=%u, "
2173 "start="LPU64", end="LPU64"\n", inode->i_ino, flock.l_flock.pid,
2174 flags, einfo.ei_mode, flock.l_flock.start, flock.l_flock.end);
2176 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2177 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2179 ll_finish_md_op_data(op_data);
2181 if ((file_lock->fl_flags & FL_FLOCK) &&
2182 (rc == 0 || file_lock->fl_type == F_UNLCK))
2183 flock_lock_file_wait(file, file_lock);
2184 if ((file_lock->fl_flags & FL_POSIX) &&
2185 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
2186 !(flags & LDLM_FL_TEST_LOCK))
2187 posix_lock_file_wait(file, file_lock);
2192 int ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
2200 * test if some locks matching bits and l_req_mode are acquired
2201 * - bits can be in different locks
2202 * - if found clear the common lock bits in *bits
2203 * - the bits not found, are kept in *bits
2205 * \param bits [IN] searched lock bits [IN]
2206 * \param l_req_mode [IN] searched lock mode
2207 * \retval boolean, true iff all bits are found
2209 int ll_have_md_lock(struct inode *inode, __u64 *bits, ldlm_mode_t l_req_mode)
2211 struct lustre_handle lockh;
2212 ldlm_policy_data_t policy;
2213 ldlm_mode_t mode = (l_req_mode == LCK_MINMODE) ?
2214 (LCK_CR|LCK_CW|LCK_PR|LCK_PW) : l_req_mode;
2223 fid = &ll_i2info(inode)->lli_fid;
2224 CDEBUG(D_INFO, "trying to match res "DFID" mode %s\n", PFID(fid),
2225 ldlm_lockname[mode]);
2227 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
2228 for (i = 0; i < MDS_INODELOCK_MAXSHIFT && *bits != 0; i++) {
2229 policy.l_inodebits.bits = *bits & (1 << i);
2230 if (policy.l_inodebits.bits == 0)
2233 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS,
2234 &policy, mode, &lockh)) {
2235 struct ldlm_lock *lock;
2237 lock = ldlm_handle2lock(&lockh);
2240 ~(lock->l_policy_data.l_inodebits.bits);
2241 LDLM_LOCK_PUT(lock);
2243 *bits &= ~policy.l_inodebits.bits;
2250 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
2251 struct lustre_handle *lockh)
2253 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2259 fid = &ll_i2info(inode)->lli_fid;
2260 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2262 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
2263 rc = md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2264 LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
2268 static int ll_inode_revalidate_fini(struct inode *inode, int rc) {
2269 if (rc == -ENOENT) { /* Already unlinked. Just update nlink
2270 * and return success */
2272 /* This path cannot be hit for regular files unless in
2273 * case of obscure races, so no need to to validate
2275 if (!S_ISREG(inode->i_mode) &&
2276 !S_ISDIR(inode->i_mode))
2281 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
2289 int __ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2292 struct inode *inode = dentry->d_inode;
2293 struct ptlrpc_request *req = NULL;
2294 struct obd_export *exp;
2299 CERROR("REPORT THIS LINE TO PETER\n");
2303 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
2304 inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
2306 exp = ll_i2mdexp(inode);
2308 /* XXX: Enable OBD_CONNECT_ATTRFID to reduce unnecessary getattr RPC.
2309 * But under CMD case, it caused some lock issues, should be fixed
2310 * with new CMD ibits lock. See bug 12718 */
2311 if (exp->exp_connect_flags & OBD_CONNECT_ATTRFID) {
2312 struct lookup_intent oit = { .it_op = IT_GETATTR };
2313 struct md_op_data *op_data;
2315 if (ibits == MDS_INODELOCK_LOOKUP)
2316 oit.it_op = IT_LOOKUP;
2318 /* Call getattr by fid, so do not provide name at all. */
2319 op_data = ll_prep_md_op_data(NULL, dentry->d_parent->d_inode,
2320 dentry->d_inode, NULL, 0, 0,
2321 LUSTRE_OPC_ANY, NULL);
2322 if (IS_ERR(op_data))
2323 RETURN(PTR_ERR(op_data));
2325 oit.it_create_mode |= M_CHECK_STALE;
2326 rc = md_intent_lock(exp, op_data, NULL, 0,
2327 /* we are not interested in name
2330 ll_md_blocking_ast, 0);
2331 ll_finish_md_op_data(op_data);
2332 oit.it_create_mode &= ~M_CHECK_STALE;
2334 rc = ll_inode_revalidate_fini(inode, rc);
2338 rc = ll_revalidate_it_finish(req, &oit, dentry);
2340 ll_intent_release(&oit);
2344 /* Unlinked? Unhash dentry, so it is not picked up later by
2345 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
2346 here to preserve get_cwd functionality on 2.6.
2348 if (!dentry->d_inode->i_nlink) {
2349 cfs_spin_lock(&ll_lookup_lock);
2350 spin_lock(&dcache_lock);
2351 ll_drop_dentry(dentry);
2352 spin_unlock(&dcache_lock);
2353 cfs_spin_unlock(&ll_lookup_lock);
2356 ll_lookup_finish_locks(&oit, dentry);
2357 } else if (!ll_have_md_lock(dentry->d_inode, &ibits, LCK_MINMODE)) {
2358 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
2359 obd_valid valid = OBD_MD_FLGETATTR;
2360 struct md_op_data *op_data;
2363 if (S_ISREG(inode->i_mode)) {
2364 rc = ll_get_max_mdsize(sbi, &ealen);
2367 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
2370 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2371 0, ealen, LUSTRE_OPC_ANY,
2373 if (IS_ERR(op_data))
2374 RETURN(PTR_ERR(op_data));
2376 op_data->op_valid = valid;
2377 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
2378 * capa for this inode. Because we only keep capas of dirs
2380 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2381 ll_finish_md_op_data(op_data);
2383 rc = ll_inode_revalidate_fini(inode, rc);
2387 rc = ll_prep_inode(&inode, req, NULL);
2390 ptlrpc_req_finished(req);
2394 int ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2397 struct inode *inode = dentry->d_inode;
2401 rc = __ll_inode_revalidate_it(dentry, it, ibits);
2403 /* if object not yet allocated, don't validate size */
2404 if (rc == 0 && ll_i2info(dentry->d_inode)->lli_smd == NULL) {
2405 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
2406 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
2407 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
2411 /* ll_glimpse_size will prefer locally cached writes if they extend
2415 rc = ll_glimpse_size(inode);
2420 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
2421 struct lookup_intent *it, struct kstat *stat)
2423 struct inode *inode = de->d_inode;
2424 struct ll_sb_info *sbi = ll_i2sbi(inode);
2425 struct ll_inode_info *lli = ll_i2info(inode);
2428 res = ll_inode_revalidate_it(de, it, MDS_INODELOCK_UPDATE |
2429 MDS_INODELOCK_LOOKUP);
2430 ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
2435 stat->dev = inode->i_sb->s_dev;
2436 if (ll_need_32bit_api(sbi))
2437 stat->ino = cl_fid_build_ino(&lli->lli_fid, 1);
2439 stat->ino = inode->i_ino;
2440 stat->mode = inode->i_mode;
2441 stat->nlink = inode->i_nlink;
2442 stat->uid = inode->i_uid;
2443 stat->gid = inode->i_gid;
2444 stat->rdev = kdev_t_to_nr(inode->i_rdev);
2445 stat->atime = inode->i_atime;
2446 stat->mtime = inode->i_mtime;
2447 stat->ctime = inode->i_ctime;
2448 #ifdef HAVE_INODE_BLKSIZE
2449 stat->blksize = inode->i_blksize;
2451 stat->blksize = 1 << inode->i_blkbits;
2454 stat->size = i_size_read(inode);
2455 stat->blocks = inode->i_blocks;
2459 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
2461 struct lookup_intent it = { .it_op = IT_GETATTR };
2463 return ll_getattr_it(mnt, de, &it, stat);
2466 #ifdef HAVE_LINUX_FIEMAP_H
2467 int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2468 __u64 start, __u64 len)
2472 struct ll_user_fiemap *fiemap;
2473 unsigned int extent_count = fieinfo->fi_extents_max;
2475 num_bytes = sizeof(*fiemap) + (extent_count *
2476 sizeof(struct ll_fiemap_extent));
2477 OBD_ALLOC_LARGE(fiemap, num_bytes);
2482 fiemap->fm_flags = fieinfo->fi_flags;
2483 fiemap->fm_extent_count = fieinfo->fi_extents_max;
2484 fiemap->fm_start = start;
2485 fiemap->fm_length = len;
2486 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
2487 sizeof(struct ll_fiemap_extent));
2489 rc = ll_do_fiemap(inode, fiemap, num_bytes);
2491 fieinfo->fi_flags = fiemap->fm_flags;
2492 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
2493 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
2494 fiemap->fm_mapped_extents * sizeof(struct ll_fiemap_extent));
2496 OBD_FREE_LARGE(fiemap, num_bytes);
2503 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
2504 lustre_check_acl(struct inode *inode, int mask, unsigned int flags)
2506 lustre_check_acl(struct inode *inode, int mask)
2509 #ifdef CONFIG_FS_POSIX_ACL
2510 struct ll_inode_info *lli = ll_i2info(inode);
2511 struct posix_acl *acl;
2515 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
2516 if (flags & IPERM_FLAG_RCU)
2519 cfs_spin_lock(&lli->lli_lock);
2520 acl = posix_acl_dup(lli->lli_posix_acl);
2521 cfs_spin_unlock(&lli->lli_lock);
2526 rc = posix_acl_permission(inode, acl, mask);
2527 posix_acl_release(acl);
2535 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
2536 int ll_inode_permission(struct inode *inode, int mask, unsigned int flags)
2538 # ifdef HAVE_INODE_PERMISION_2ARGS
2539 int ll_inode_permission(struct inode *inode, int mask)
2541 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2548 /* as root inode are NOT getting validated in lookup operation,
2549 * need to do it before permission check. */
2551 if (inode == inode->i_sb->s_root->d_inode) {
2552 struct lookup_intent it = { .it_op = IT_LOOKUP };
2554 rc = __ll_inode_revalidate_it(inode->i_sb->s_root, &it,
2555 MDS_INODELOCK_LOOKUP);
2560 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
2561 inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
2563 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2564 return lustre_check_remote_perm(inode, mask);
2566 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2567 rc = ll_generic_permission(inode, mask, flags, lustre_check_acl);
2572 #ifdef HAVE_FILE_READV
2573 #define READ_METHOD readv
2574 #define READ_FUNCTION ll_file_readv
2575 #define WRITE_METHOD writev
2576 #define WRITE_FUNCTION ll_file_writev
2578 #define READ_METHOD aio_read
2579 #define READ_FUNCTION ll_file_aio_read
2580 #define WRITE_METHOD aio_write
2581 #define WRITE_FUNCTION ll_file_aio_write
2584 /* -o localflock - only provides locally consistent flock locks */
2585 struct file_operations ll_file_operations = {
2586 .read = ll_file_read,
2587 .READ_METHOD = READ_FUNCTION,
2588 .write = ll_file_write,
2589 .WRITE_METHOD = WRITE_FUNCTION,
2590 #ifdef HAVE_UNLOCKED_IOCTL
2591 .unlocked_ioctl = ll_file_ioctl,
2593 .ioctl = ll_file_ioctl,
2595 .open = ll_file_open,
2596 .release = ll_file_release,
2597 .mmap = ll_file_mmap,
2598 .llseek = ll_file_seek,
2599 #ifdef HAVE_KERNEL_SENDFILE
2600 .sendfile = ll_file_sendfile,
2602 #ifdef HAVE_KERNEL_SPLICE_READ
2603 .splice_read = ll_file_splice_read,
2609 struct file_operations ll_file_operations_flock = {
2610 .read = ll_file_read,
2611 .READ_METHOD = READ_FUNCTION,
2612 .write = ll_file_write,
2613 .WRITE_METHOD = WRITE_FUNCTION,
2614 #ifdef HAVE_UNLOCKED_IOCTL
2615 .unlocked_ioctl = ll_file_ioctl,
2617 .ioctl = ll_file_ioctl,
2619 .open = ll_file_open,
2620 .release = ll_file_release,
2621 .mmap = ll_file_mmap,
2622 .llseek = ll_file_seek,
2623 #ifdef HAVE_KERNEL_SENDFILE
2624 .sendfile = ll_file_sendfile,
2626 #ifdef HAVE_KERNEL_SPLICE_READ
2627 .splice_read = ll_file_splice_read,
2631 .flock = ll_file_flock,
2632 .lock = ll_file_flock
2635 /* These are for -o noflock - to return ENOSYS on flock calls */
2636 struct file_operations ll_file_operations_noflock = {
2637 .read = ll_file_read,
2638 .READ_METHOD = READ_FUNCTION,
2639 .write = ll_file_write,
2640 .WRITE_METHOD = WRITE_FUNCTION,
2641 #ifdef HAVE_UNLOCKED_IOCTL
2642 .unlocked_ioctl = ll_file_ioctl,
2644 .ioctl = ll_file_ioctl,
2646 .open = ll_file_open,
2647 .release = ll_file_release,
2648 .mmap = ll_file_mmap,
2649 .llseek = ll_file_seek,
2650 #ifdef HAVE_KERNEL_SENDFILE
2651 .sendfile = ll_file_sendfile,
2653 #ifdef HAVE_KERNEL_SPLICE_READ
2654 .splice_read = ll_file_splice_read,
2658 .flock = ll_file_noflock,
2659 .lock = ll_file_noflock
2662 struct inode_operations ll_file_inode_operations = {
2663 .setattr = ll_setattr,
2664 .truncate = ll_truncate,
2665 .getattr = ll_getattr,
2666 .permission = ll_inode_permission,
2667 .setxattr = ll_setxattr,
2668 .getxattr = ll_getxattr,
2669 .listxattr = ll_listxattr,
2670 .removexattr = ll_removexattr,
2671 #ifdef HAVE_LINUX_FIEMAP_H
2672 .fiemap = ll_fiemap,
2676 /* dynamic ioctl number support routins */
2677 static struct llioc_ctl_data {
2678 cfs_rw_semaphore_t ioc_sem;
2679 cfs_list_t ioc_head;
2681 __RWSEM_INITIALIZER(llioc.ioc_sem),
2682 CFS_LIST_HEAD_INIT(llioc.ioc_head)
2687 cfs_list_t iocd_list;
2688 unsigned int iocd_size;
2689 llioc_callback_t iocd_cb;
2690 unsigned int iocd_count;
2691 unsigned int iocd_cmd[0];
2694 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
2697 struct llioc_data *in_data = NULL;
2700 if (cb == NULL || cmd == NULL ||
2701 count > LLIOC_MAX_CMD || count < 0)
2704 size = sizeof(*in_data) + count * sizeof(unsigned int);
2705 OBD_ALLOC(in_data, size);
2706 if (in_data == NULL)
2709 memset(in_data, 0, sizeof(*in_data));
2710 in_data->iocd_size = size;
2711 in_data->iocd_cb = cb;
2712 in_data->iocd_count = count;
2713 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
2715 cfs_down_write(&llioc.ioc_sem);
2716 cfs_list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
2717 cfs_up_write(&llioc.ioc_sem);
2722 void ll_iocontrol_unregister(void *magic)
2724 struct llioc_data *tmp;
2729 cfs_down_write(&llioc.ioc_sem);
2730 cfs_list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
2732 unsigned int size = tmp->iocd_size;
2734 cfs_list_del(&tmp->iocd_list);
2735 cfs_up_write(&llioc.ioc_sem);
2737 OBD_FREE(tmp, size);
2741 cfs_up_write(&llioc.ioc_sem);
2743 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
2746 EXPORT_SYMBOL(ll_iocontrol_register);
2747 EXPORT_SYMBOL(ll_iocontrol_unregister);
2749 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
2750 unsigned int cmd, unsigned long arg, int *rcp)
2752 enum llioc_iter ret = LLIOC_CONT;
2753 struct llioc_data *data;
2754 int rc = -EINVAL, i;
2756 cfs_down_read(&llioc.ioc_sem);
2757 cfs_list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
2758 for (i = 0; i < data->iocd_count; i++) {
2759 if (cmd != data->iocd_cmd[i])
2762 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
2766 if (ret == LLIOC_STOP)
2769 cfs_up_read(&llioc.ioc_sem);