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.
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 <lustre_mdc.h>
47 #include <linux/pagemap.h>
48 #include <linux/file.h>
49 #include "llite_internal.h"
50 #include <lustre/ll_fiemap.h>
52 #include "cl_object.h"
54 struct ll_file_data *ll_file_data_get(void)
56 struct ll_file_data *fd;
58 OBD_SLAB_ALLOC_PTR_GFP(fd, ll_file_data_slab, CFS_ALLOC_IO);
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_down(&lli->lli_och_sem);
205 if (*och_usecount) { /* There are still users of this handle, so
207 cfs_up(&lli->lli_och_sem);
212 cfs_up(&lli->lli_och_sem);
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_down(&lli->lli_och_sem);
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_up(&lli->lli_och_sem);
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 int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm);
280 /* While this returns an error code, fput() the caller does not, so we need
281 * to make every effort to clean up all of our state here. Also, applications
282 * rarely check close errors and even if an error is returned they will not
283 * re-try the close call.
285 int ll_file_release(struct inode *inode, struct file *file)
287 struct ll_file_data *fd;
288 struct ll_sb_info *sbi = ll_i2sbi(inode);
289 struct ll_inode_info *lli = ll_i2info(inode);
290 struct lov_stripe_md *lsm = lli->lli_smd;
294 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
295 inode->i_generation, inode);
297 #ifdef CONFIG_FS_POSIX_ACL
298 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
299 inode == inode->i_sb->s_root->d_inode) {
300 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
303 if (unlikely(fd->fd_flags & LL_FILE_RMTACL)) {
304 fd->fd_flags &= ~LL_FILE_RMTACL;
305 rct_del(&sbi->ll_rct, cfs_curproc_pid());
306 et_search_free(&sbi->ll_et, cfs_curproc_pid());
311 if (inode->i_sb->s_root != file->f_dentry)
312 ll_stats_ops_tally(sbi, LPROC_LL_RELEASE, 1);
313 fd = LUSTRE_FPRIVATE(file);
316 /* The last ref on @file, maybe not the the owner pid of statahead.
317 * Different processes can open the same dir, "ll_opendir_key" means:
318 * it is me that should stop the statahead thread. */
319 if (lli->lli_opendir_key == fd && lli->lli_opendir_pid != 0)
320 ll_stop_statahead(inode, lli->lli_opendir_key);
322 if (inode->i_sb->s_root == file->f_dentry) {
323 LUSTRE_FPRIVATE(file) = NULL;
324 ll_file_data_put(fd);
329 lov_test_and_clear_async_rc(lsm);
330 lli->lli_async_rc = 0;
332 rc = ll_md_close(sbi->ll_md_exp, inode, file);
334 if (OBD_FAIL_TIMEOUT_MS(OBD_FAIL_PTLRPC_DUMP_LOG, obd_fail_val))
335 libcfs_debug_dumplog();
340 static int ll_intent_file_open(struct file *file, void *lmm,
341 int lmmsize, struct lookup_intent *itp)
343 struct ll_sb_info *sbi = ll_i2sbi(file->f_dentry->d_inode);
344 struct dentry *parent = file->f_dentry->d_parent;
345 const char *name = file->f_dentry->d_name.name;
346 const int len = file->f_dentry->d_name.len;
347 struct md_op_data *op_data;
348 struct ptlrpc_request *req;
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 && !lmmsize)
365 itp->it_flags |= MDS_OPEN_LOCK;
367 op_data = ll_prep_md_op_data(NULL, parent->d_inode,
368 file->f_dentry->d_inode, name, len,
369 O_RDWR, LUSTRE_OPC_ANY, NULL);
371 RETURN(PTR_ERR(op_data));
373 rc = md_intent_lock(sbi->ll_md_exp, op_data, lmm, lmmsize, itp,
374 0 /*unused */, &req, ll_md_blocking_ast, 0);
375 ll_finish_md_op_data(op_data);
377 /* reason for keep own exit path - don`t flood log
378 * with messages with -ESTALE errors.
380 if (!it_disposition(itp, DISP_OPEN_OPEN) ||
381 it_open_error(DISP_OPEN_OPEN, itp))
383 ll_release_openhandle(file->f_dentry, itp);
387 if (rc != 0 || it_open_error(DISP_OPEN_OPEN, itp)) {
388 rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, itp);
389 CDEBUG(D_VFSTRACE, "lock enqueue: err: %d\n", rc);
393 rc = ll_prep_inode(&file->f_dentry->d_inode, req, NULL);
394 if (!rc && itp->d.lustre.it_lock_mode)
395 md_set_lock_data(sbi->ll_md_exp,
396 &itp->d.lustre.it_lock_handle,
397 file->f_dentry->d_inode, NULL);
400 ptlrpc_req_finished(itp->d.lustre.it_data);
401 it_clear_disposition(itp, DISP_ENQ_COMPLETE);
402 ll_intent_drop_lock(itp);
408 * Assign an obtained @ioepoch to client's inode. No lock is needed, MDS does
409 * not believe attributes if a few ioepoch holders exist. Attributes for
410 * previous ioepoch if new one is opened are also skipped by MDS.
412 void ll_ioepoch_open(struct ll_inode_info *lli, __u64 ioepoch)
414 if (ioepoch && lli->lli_ioepoch != ioepoch) {
415 lli->lli_ioepoch = ioepoch;
416 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
417 ioepoch, PFID(&lli->lli_fid));
421 static int ll_och_fill(struct obd_export *md_exp, struct ll_inode_info *lli,
422 struct lookup_intent *it, struct obd_client_handle *och)
424 struct ptlrpc_request *req = it->d.lustre.it_data;
425 struct mdt_body *body;
429 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
430 LASSERT(body != NULL); /* reply already checked out */
432 memcpy(&och->och_fh, &body->handle, sizeof(body->handle));
433 och->och_magic = OBD_CLIENT_HANDLE_MAGIC;
434 och->och_fid = lli->lli_fid;
435 och->och_flags = it->it_flags;
436 ll_ioepoch_open(lli, body->ioepoch);
438 return md_set_open_replay_data(md_exp, och, req);
441 int ll_local_open(struct file *file, struct lookup_intent *it,
442 struct ll_file_data *fd, struct obd_client_handle *och)
444 struct inode *inode = file->f_dentry->d_inode;
445 struct ll_inode_info *lli = ll_i2info(inode);
448 LASSERT(!LUSTRE_FPRIVATE(file));
453 struct ptlrpc_request *req = it->d.lustre.it_data;
454 struct mdt_body *body;
457 rc = ll_och_fill(ll_i2sbi(inode)->ll_md_exp, lli, it, och);
461 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
462 if ((it->it_flags & FMODE_WRITE) &&
463 (body->valid & OBD_MD_FLSIZE))
464 CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID"\n",
465 lli->lli_ioepoch, PFID(&lli->lli_fid));
468 LUSTRE_FPRIVATE(file) = fd;
469 ll_readahead_init(inode, &fd->fd_ras);
470 fd->fd_omode = it->it_flags;
474 /* Open a file, and (for the very first open) create objects on the OSTs at
475 * this time. If opened with O_LOV_DELAY_CREATE, then we don't do the object
476 * creation or open until ll_lov_setstripe() ioctl is called. We grab
477 * lli_open_sem to ensure no other process will create objects, send the
478 * stripe MD to the MDS, or try to destroy the objects if that fails.
480 * If we already have the stripe MD locally then we don't request it in
481 * md_open(), by passing a lmm_size = 0.
483 * It is up to the application to ensure no other processes open this file
484 * in the O_LOV_DELAY_CREATE case, or the default striping pattern will be
485 * used. We might be able to avoid races of that sort by getting lli_open_sem
486 * before returning in the O_LOV_DELAY_CREATE case and dropping it here
487 * or in ll_file_release(), but I'm not sure that is desirable/necessary.
489 int ll_file_open(struct inode *inode, struct file *file)
491 struct ll_inode_info *lli = ll_i2info(inode);
492 struct lookup_intent *it, oit = { .it_op = IT_OPEN,
493 .it_flags = file->f_flags };
494 struct lov_stripe_md *lsm;
495 struct ptlrpc_request *req = NULL;
496 struct obd_client_handle **och_p;
498 struct ll_file_data *fd;
499 int rc = 0, opendir_set = 0;
502 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), flags %o\n", inode->i_ino,
503 inode->i_generation, inode, file->f_flags);
505 #ifdef HAVE_VFS_INTENT_PATCHES
508 it = file->private_data; /* XXX: compat macro */
509 file->private_data = NULL; /* prevent ll_local_open assertion */
512 fd = ll_file_data_get();
517 if (S_ISDIR(inode->i_mode)) {
518 cfs_spin_lock(&lli->lli_sa_lock);
519 if (lli->lli_opendir_key == NULL && lli->lli_opendir_pid == 0) {
520 LASSERT(lli->lli_sai == NULL);
521 lli->lli_opendir_key = fd;
522 lli->lli_opendir_pid = cfs_curproc_pid();
525 cfs_spin_unlock(&lli->lli_sa_lock);
528 if (inode->i_sb->s_root == file->f_dentry) {
529 LUSTRE_FPRIVATE(file) = fd;
533 if (!it || !it->d.lustre.it_disposition) {
534 /* Convert f_flags into access mode. We cannot use file->f_mode,
535 * because everything but O_ACCMODE mask was stripped from
537 if ((oit.it_flags + 1) & O_ACCMODE)
539 if (file->f_flags & O_TRUNC)
540 oit.it_flags |= FMODE_WRITE;
542 /* kernel only call f_op->open in dentry_open. filp_open calls
543 * dentry_open after call to open_namei that checks permissions.
544 * Only nfsd_open call dentry_open directly without checking
545 * permissions and because of that this code below is safe. */
546 if (oit.it_flags & FMODE_WRITE)
547 oit.it_flags |= MDS_OPEN_OWNEROVERRIDE;
549 /* We do not want O_EXCL here, presumably we opened the file
550 * already? XXX - NFS implications? */
551 oit.it_flags &= ~O_EXCL;
553 /* bug20584, if "it_flags" contains O_CREAT, the file will be
554 * created if necessary, then "IT_CREAT" should be set to keep
555 * consistent with it */
556 if (oit.it_flags & O_CREAT)
557 oit.it_op |= IT_CREAT;
563 /* Let's see if we have file open on MDS already. */
564 if (it->it_flags & FMODE_WRITE) {
565 och_p = &lli->lli_mds_write_och;
566 och_usecount = &lli->lli_open_fd_write_count;
567 } else if (it->it_flags & FMODE_EXEC) {
568 och_p = &lli->lli_mds_exec_och;
569 och_usecount = &lli->lli_open_fd_exec_count;
571 och_p = &lli->lli_mds_read_och;
572 och_usecount = &lli->lli_open_fd_read_count;
575 cfs_down(&lli->lli_och_sem);
576 if (*och_p) { /* Open handle is present */
577 if (it_disposition(it, DISP_OPEN_OPEN)) {
578 /* Well, there's extra open request that we do not need,
579 let's close it somehow. This will decref request. */
580 rc = it_open_error(DISP_OPEN_OPEN, it);
582 cfs_up(&lli->lli_och_sem);
583 ll_file_data_put(fd);
584 GOTO(out_openerr, rc);
586 ll_release_openhandle(file->f_dentry, it);
587 lprocfs_counter_incr(ll_i2sbi(inode)->ll_stats,
592 rc = ll_local_open(file, it, fd, NULL);
595 cfs_up(&lli->lli_och_sem);
596 ll_file_data_put(fd);
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_sem as well, that would
606 result in a deadlock */
607 cfs_up(&lli->lli_och_sem);
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 ll_file_data_put(fd);
613 GOTO(out_openerr, rc);
616 /* Got some error? Release the request */
617 if (it->d.lustre.it_status < 0) {
618 req = it->d.lustre.it_data;
619 ptlrpc_req_finished(req);
623 OBD_ALLOC(*och_p, sizeof (struct obd_client_handle));
625 ll_file_data_put(fd);
626 GOTO(out_och_free, rc = -ENOMEM);
629 req = it->d.lustre.it_data;
631 /* md_intent_lock() didn't get a request ref if there was an
632 * open error, so don't do cleanup on the request here
634 /* XXX (green): Should not we bail out on any error here, not
635 * just open error? */
636 rc = it_open_error(DISP_OPEN_OPEN, it);
638 ll_file_data_put(fd);
639 GOTO(out_och_free, rc);
642 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1);
643 rc = ll_local_open(file, it, fd, *och_p);
645 ll_file_data_put(fd);
646 GOTO(out_och_free, rc);
649 cfs_up(&lli->lli_och_sem);
651 /* Must do this outside lli_och_sem lock to prevent deadlock where
652 different kind of OPEN lock for this same inode gets cancelled
653 by ldlm_cancel_lru */
654 if (!S_ISREG(inode->i_mode))
661 if (file->f_flags & O_LOV_DELAY_CREATE ||
662 !(file->f_mode & FMODE_WRITE)) {
663 CDEBUG(D_INODE, "object creation was delayed\n");
667 file->f_flags &= ~O_LOV_DELAY_CREATE;
670 ptlrpc_req_finished(req);
672 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
676 OBD_FREE(*och_p, sizeof (struct obd_client_handle));
677 *och_p = NULL; /* OBD_FREE writes some magic there */
680 cfs_up(&lli->lli_och_sem);
682 if (opendir_set != 0)
683 ll_stop_statahead(inode, lli->lli_opendir_key);
689 /* Fills the obdo with the attributes for the lsm */
690 static int ll_lsm_getattr(struct lov_stripe_md *lsm, struct obd_export *exp,
691 struct obd_capa *capa, struct obdo *obdo,
692 __u64 ioepoch, int sync)
694 struct ptlrpc_request_set *set;
695 struct obd_info oinfo = { { { 0 } } };
700 LASSERT(lsm != NULL);
704 oinfo.oi_oa->o_id = lsm->lsm_object_id;
705 oinfo.oi_oa->o_seq = lsm->lsm_object_seq;
706 oinfo.oi_oa->o_mode = S_IFREG;
707 oinfo.oi_oa->o_ioepoch = ioepoch;
708 oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
709 OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
710 OBD_MD_FLBLKSZ | OBD_MD_FLATIME |
711 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
712 OBD_MD_FLGROUP | OBD_MD_FLEPOCH;
713 oinfo.oi_capa = capa;
715 oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
716 oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
719 set = ptlrpc_prep_set();
721 CERROR("can't allocate ptlrpc set\n");
724 rc = obd_getattr_async(exp, &oinfo, set);
726 rc = ptlrpc_set_wait(set);
727 ptlrpc_set_destroy(set);
730 oinfo.oi_oa->o_valid &= (OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
731 OBD_MD_FLATIME | OBD_MD_FLMTIME |
732 OBD_MD_FLCTIME | OBD_MD_FLSIZE);
737 * Performs the getattr on the inode and updates its fields.
738 * If @sync != 0, perform the getattr under the server-side lock.
740 int ll_inode_getattr(struct inode *inode, struct obdo *obdo,
741 __u64 ioepoch, int sync)
743 struct ll_inode_info *lli = ll_i2info(inode);
744 struct obd_capa *capa = ll_mdscapa_get(inode);
748 rc = ll_lsm_getattr(lli->lli_smd, ll_i2dtexp(inode),
749 capa, obdo, ioepoch, sync);
752 obdo_refresh_inode(inode, obdo, obdo->o_valid);
754 "objid "LPX64" size %Lu, blocks %llu, blksize %lu\n",
755 lli->lli_smd->lsm_object_id, i_size_read(inode),
756 (unsigned long long)inode->i_blocks,
757 (unsigned long)ll_inode_blksize(inode));
762 int ll_merge_lvb(struct inode *inode)
764 struct ll_inode_info *lli = ll_i2info(inode);
765 struct ll_sb_info *sbi = ll_i2sbi(inode);
771 ll_inode_size_lock(inode, 1);
772 inode_init_lvb(inode, &lvb);
774 /* merge timestamps the most resently obtained from mds with
775 timestamps obtained from osts */
776 lvb.lvb_atime = lli->lli_lvb.lvb_atime;
777 lvb.lvb_mtime = lli->lli_lvb.lvb_mtime;
778 lvb.lvb_ctime = lli->lli_lvb.lvb_ctime;
779 rc = obd_merge_lvb(sbi->ll_dt_exp, lli->lli_smd, &lvb, 0);
780 cl_isize_write_nolock(inode, lvb.lvb_size);
782 CDEBUG(D_VFSTRACE, DFID" updating i_size "LPU64"\n",
783 PFID(&lli->lli_fid), lvb.lvb_size);
784 inode->i_blocks = lvb.lvb_blocks;
786 LTIME_S(inode->i_mtime) = lvb.lvb_mtime;
787 LTIME_S(inode->i_atime) = lvb.lvb_atime;
788 LTIME_S(inode->i_ctime) = lvb.lvb_ctime;
789 ll_inode_size_unlock(inode, 1);
794 int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
797 struct obdo obdo = { 0 };
800 rc = ll_lsm_getattr(lsm, sbi->ll_dt_exp, NULL, &obdo, 0, 0);
802 st->st_size = obdo.o_size;
803 st->st_blocks = obdo.o_blocks;
804 st->st_mtime = obdo.o_mtime;
805 st->st_atime = obdo.o_atime;
806 st->st_ctime = obdo.o_ctime;
811 void ll_io_init(struct cl_io *io, const struct file *file, int write)
813 struct inode *inode = file->f_dentry->d_inode;
815 memset(io, 0, sizeof *io);
816 io->u.ci_rw.crw_nonblock = file->f_flags & O_NONBLOCK;
818 io->u.ci_wr.wr_append = !!(file->f_flags & O_APPEND);
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;
829 static ssize_t ll_file_io_generic(const struct lu_env *env,
830 struct vvp_io_args *args, struct file *file,
831 enum cl_io_type iot, loff_t *ppos, size_t count)
837 io = &ccc_env_info(env)->cti_io;
838 ll_io_init(io, file, iot == CIT_WRITE);
840 if (cl_io_rw_init(env, io, iot, *ppos, count) == 0) {
841 struct vvp_io *vio = vvp_env_io(env);
842 struct ccc_io *cio = ccc_env_io(env);
843 struct ll_inode_info *lli = ll_i2info(file->f_dentry->d_inode);
844 int write_sem_locked = 0;
846 cio->cui_fd = LUSTRE_FPRIVATE(file);
847 vio->cui_io_subtype = args->via_io_subtype;
849 switch (vio->cui_io_subtype) {
851 cio->cui_iov = args->u.normal.via_iov;
852 cio->cui_nrsegs = args->u.normal.via_nrsegs;
853 cio->cui_tot_nrsegs = cio->cui_nrsegs;
854 #ifndef HAVE_FILE_WRITEV
855 cio->cui_iocb = args->u.normal.via_iocb;
857 if ((iot == CIT_WRITE) &&
858 !(cio->cui_fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
859 cfs_down(&lli->lli_write_sem);
860 write_sem_locked = 1;
864 vio->u.sendfile.cui_actor = args->u.sendfile.via_actor;
865 vio->u.sendfile.cui_target = args->u.sendfile.via_target;
868 vio->u.splice.cui_pipe = args->u.splice.via_pipe;
869 vio->u.splice.cui_flags = args->u.splice.via_flags;
872 CERROR("Unknow IO type - %u\n", vio->cui_io_subtype);
875 result = cl_io_loop(env, io);
876 if (write_sem_locked)
877 cfs_up(&lli->lli_write_sem);
879 /* cl_io_rw_init() handled IO */
880 result = io->ci_result;
883 if (io->ci_nob > 0) {
885 *ppos = io->u.ci_wr.wr.crw_pos;
893 * XXX: exact copy from kernel code (__generic_file_aio_write_nolock)
895 static int ll_file_get_iov_count(const struct iovec *iov,
896 unsigned long *nr_segs, size_t *count)
901 for (seg = 0; seg < *nr_segs; seg++) {
902 const struct iovec *iv = &iov[seg];
905 * If any segment has a negative length, or the cumulative
906 * length ever wraps negative then return -EINVAL.
909 if (unlikely((ssize_t)(cnt|iv->iov_len) < 0))
911 if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
916 cnt -= iv->iov_len; /* This segment is no good */
923 #ifdef HAVE_FILE_READV
924 static ssize_t ll_file_readv(struct file *file, const struct iovec *iov,
925 unsigned long nr_segs, loff_t *ppos)
928 struct vvp_io_args *args;
934 result = ll_file_get_iov_count(iov, &nr_segs, &count);
938 env = cl_env_get(&refcheck);
940 RETURN(PTR_ERR(env));
942 args = vvp_env_args(env, IO_NORMAL);
943 args->u.normal.via_iov = (struct iovec *)iov;
944 args->u.normal.via_nrsegs = nr_segs;
946 result = ll_file_io_generic(env, args, file, CIT_READ, ppos, count);
947 cl_env_put(env, &refcheck);
951 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
955 struct iovec *local_iov;
960 env = cl_env_get(&refcheck);
962 RETURN(PTR_ERR(env));
964 local_iov = &vvp_env_info(env)->vti_local_iov;
965 local_iov->iov_base = (void __user *)buf;
966 local_iov->iov_len = count;
967 result = ll_file_readv(file, local_iov, 1, ppos);
968 cl_env_put(env, &refcheck);
973 static ssize_t ll_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
974 unsigned long nr_segs, loff_t pos)
977 struct vvp_io_args *args;
983 result = ll_file_get_iov_count(iov, &nr_segs, &count);
987 env = cl_env_get(&refcheck);
989 RETURN(PTR_ERR(env));
991 args = vvp_env_args(env, IO_NORMAL);
992 args->u.normal.via_iov = (struct iovec *)iov;
993 args->u.normal.via_nrsegs = nr_segs;
994 args->u.normal.via_iocb = iocb;
996 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_READ,
997 &iocb->ki_pos, count);
998 cl_env_put(env, &refcheck);
1002 static ssize_t ll_file_read(struct file *file, char *buf, size_t count,
1006 struct iovec *local_iov;
1007 struct kiocb *kiocb;
1012 env = cl_env_get(&refcheck);
1014 RETURN(PTR_ERR(env));
1016 local_iov = &vvp_env_info(env)->vti_local_iov;
1017 kiocb = &vvp_env_info(env)->vti_kiocb;
1018 local_iov->iov_base = (void __user *)buf;
1019 local_iov->iov_len = count;
1020 init_sync_kiocb(kiocb, file);
1021 kiocb->ki_pos = *ppos;
1022 kiocb->ki_left = count;
1024 result = ll_file_aio_read(kiocb, local_iov, 1, kiocb->ki_pos);
1025 *ppos = kiocb->ki_pos;
1027 cl_env_put(env, &refcheck);
1033 * Write to a file (through the page cache).
1035 #ifdef HAVE_FILE_WRITEV
1036 static ssize_t ll_file_writev(struct file *file, const struct iovec *iov,
1037 unsigned long nr_segs, loff_t *ppos)
1040 struct vvp_io_args *args;
1046 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1050 env = cl_env_get(&refcheck);
1052 RETURN(PTR_ERR(env));
1054 args = vvp_env_args(env, IO_NORMAL);
1055 args->u.normal.via_iov = (struct iovec *)iov;
1056 args->u.normal.via_nrsegs = nr_segs;
1058 result = ll_file_io_generic(env, args, file, CIT_WRITE, ppos, count);
1059 cl_env_put(env, &refcheck);
1063 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1067 struct iovec *local_iov;
1072 env = cl_env_get(&refcheck);
1074 RETURN(PTR_ERR(env));
1076 local_iov = &vvp_env_info(env)->vti_local_iov;
1077 local_iov->iov_base = (void __user *)buf;
1078 local_iov->iov_len = count;
1080 result = ll_file_writev(file, local_iov, 1, ppos);
1081 cl_env_put(env, &refcheck);
1085 #else /* AIO stuff */
1086 static ssize_t ll_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
1087 unsigned long nr_segs, loff_t pos)
1090 struct vvp_io_args *args;
1096 result = ll_file_get_iov_count(iov, &nr_segs, &count);
1100 env = cl_env_get(&refcheck);
1102 RETURN(PTR_ERR(env));
1104 args = vvp_env_args(env, IO_NORMAL);
1105 args->u.normal.via_iov = (struct iovec *)iov;
1106 args->u.normal.via_nrsegs = nr_segs;
1107 args->u.normal.via_iocb = iocb;
1109 result = ll_file_io_generic(env, args, iocb->ki_filp, CIT_WRITE,
1110 &iocb->ki_pos, count);
1111 cl_env_put(env, &refcheck);
1115 static ssize_t ll_file_write(struct file *file, const char *buf, size_t count,
1119 struct iovec *local_iov;
1120 struct kiocb *kiocb;
1125 env = cl_env_get(&refcheck);
1127 RETURN(PTR_ERR(env));
1129 local_iov = &vvp_env_info(env)->vti_local_iov;
1130 kiocb = &vvp_env_info(env)->vti_kiocb;
1131 local_iov->iov_base = (void __user *)buf;
1132 local_iov->iov_len = count;
1133 init_sync_kiocb(kiocb, file);
1134 kiocb->ki_pos = *ppos;
1135 kiocb->ki_left = count;
1137 result = ll_file_aio_write(kiocb, local_iov, 1, kiocb->ki_pos);
1138 *ppos = kiocb->ki_pos;
1140 cl_env_put(env, &refcheck);
1146 #ifdef HAVE_KERNEL_SENDFILE
1148 * Send file content (through pagecache) somewhere with helper
1150 static ssize_t ll_file_sendfile(struct file *in_file, loff_t *ppos,size_t count,
1151 read_actor_t actor, void *target)
1154 struct vvp_io_args *args;
1159 env = cl_env_get(&refcheck);
1161 RETURN(PTR_ERR(env));
1163 args = vvp_env_args(env, IO_SENDFILE);
1164 args->u.sendfile.via_target = target;
1165 args->u.sendfile.via_actor = actor;
1167 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1168 cl_env_put(env, &refcheck);
1173 #ifdef HAVE_KERNEL_SPLICE_READ
1175 * Send file content (through pagecache) somewhere with helper
1177 static ssize_t ll_file_splice_read(struct file *in_file, loff_t *ppos,
1178 struct pipe_inode_info *pipe, size_t count,
1182 struct vvp_io_args *args;
1187 env = cl_env_get(&refcheck);
1189 RETURN(PTR_ERR(env));
1191 args = vvp_env_args(env, IO_SPLICE);
1192 args->u.splice.via_pipe = pipe;
1193 args->u.splice.via_flags = flags;
1195 result = ll_file_io_generic(env, args, in_file, CIT_READ, ppos, count);
1196 cl_env_put(env, &refcheck);
1201 static int ll_lov_recreate(struct inode *inode, obd_id id, obd_seq seq,
1204 struct obd_export *exp = ll_i2dtexp(inode);
1205 struct obd_trans_info oti = { 0 };
1206 struct obdo *oa = NULL;
1209 struct lov_stripe_md *lsm, *lsm2;
1216 ll_inode_size_lock(inode, 0);
1217 lsm = ll_i2info(inode)->lli_smd;
1219 GOTO(out, rc = -ENOENT);
1220 lsm_size = sizeof(*lsm) + (sizeof(struct lov_oinfo) *
1221 (lsm->lsm_stripe_count));
1223 OBD_ALLOC(lsm2, lsm_size);
1225 GOTO(out, rc = -ENOMEM);
1229 oa->o_nlink = ost_idx;
1230 oa->o_flags |= OBD_FL_RECREATE_OBJS;
1231 oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
1232 obdo_from_inode(oa, inode, &ll_i2info(inode)->lli_fid, OBD_MD_FLTYPE |
1233 OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME);
1234 memcpy(lsm2, lsm, lsm_size);
1235 rc = obd_create(exp, oa, &lsm2, &oti);
1237 OBD_FREE(lsm2, lsm_size);
1240 ll_inode_size_unlock(inode, 0);
1245 static int ll_lov_recreate_obj(struct inode *inode, unsigned long arg)
1247 struct ll_recreate_obj ucreat;
1250 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1253 if (cfs_copy_from_user(&ucreat, (struct ll_recreate_obj *)arg,
1254 sizeof(struct ll_recreate_obj)))
1257 RETURN(ll_lov_recreate(inode, ucreat.lrc_id, 0,
1258 ucreat.lrc_ost_idx));
1261 static int ll_lov_recreate_fid(struct inode *inode, unsigned long arg)
1268 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1271 if (cfs_copy_from_user(&fid, (struct lu_fid *)arg,
1272 sizeof(struct lu_fid)))
1275 id = fid_oid(&fid) | ((fid_seq(&fid) & 0xffff) << 32);
1276 ost_idx = (fid_seq(&fid) >> 16) & 0xffff;
1277 RETURN(ll_lov_recreate(inode, id, 0, ost_idx));
1280 int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file,
1281 int flags, struct lov_user_md *lum, int lum_size)
1283 struct lov_stripe_md *lsm;
1284 struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
1288 ll_inode_size_lock(inode, 0);
1289 lsm = ll_i2info(inode)->lli_smd;
1291 ll_inode_size_unlock(inode, 0);
1292 CDEBUG(D_IOCTL, "stripe already exists for ino %lu\n",
1297 rc = ll_intent_file_open(file, lum, lum_size, &oit);
1300 if (it_disposition(&oit, DISP_LOOKUP_NEG))
1301 GOTO(out_req_free, rc = -ENOENT);
1302 rc = oit.d.lustre.it_status;
1304 GOTO(out_req_free, rc);
1306 ll_release_openhandle(file->f_dentry, &oit);
1309 ll_inode_size_unlock(inode, 0);
1310 ll_intent_release(&oit);
1313 ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
1317 int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename,
1318 struct lov_mds_md **lmmp, int *lmm_size,
1319 struct ptlrpc_request **request)
1321 struct ll_sb_info *sbi = ll_i2sbi(inode);
1322 struct mdt_body *body;
1323 struct lov_mds_md *lmm = NULL;
1324 struct ptlrpc_request *req = NULL;
1325 struct md_op_data *op_data;
1328 rc = ll_get_max_mdsize(sbi, &lmmsize);
1332 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename,
1333 strlen(filename), lmmsize,
1334 LUSTRE_OPC_ANY, NULL);
1335 if (op_data == NULL)
1338 op_data->op_valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
1339 rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
1340 ll_finish_md_op_data(op_data);
1342 CDEBUG(D_INFO, "md_getattr_name failed "
1343 "on %s: rc %d\n", filename, rc);
1347 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1348 LASSERT(body != NULL); /* checked by mdc_getattr_name */
1350 lmmsize = body->eadatasize;
1352 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
1354 GOTO(out, rc = -ENODATA);
1357 lmm = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, lmmsize);
1358 LASSERT(lmm != NULL);
1360 if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
1361 (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
1362 GOTO(out, rc = -EPROTO);
1366 * This is coming from the MDS, so is probably in
1367 * little endian. We convert it to host endian before
1368 * passing it to userspace.
1370 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC)) {
1371 /* if function called for directory - we should
1372 * avoid swab not existent lsm objects */
1373 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V1)) {
1374 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1375 if (S_ISREG(body->mode))
1376 lustre_swab_lov_user_md_objects(
1377 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1378 ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count);
1379 } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1380 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1381 if (S_ISREG(body->mode))
1382 lustre_swab_lov_user_md_objects(
1383 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1384 ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
1390 *lmm_size = lmmsize;
1395 static int ll_lov_setea(struct inode *inode, struct file *file,
1398 int flags = MDS_OPEN_HAS_OBJS | FMODE_WRITE;
1399 struct lov_user_md *lump;
1400 int lum_size = sizeof(struct lov_user_md) +
1401 sizeof(struct lov_user_ost_data);
1405 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1408 OBD_ALLOC(lump, lum_size);
1412 if (cfs_copy_from_user(lump, (struct lov_user_md *)arg, lum_size)) {
1413 OBD_FREE(lump, lum_size);
1417 rc = ll_lov_setstripe_ea_info(inode, file, flags, lump, lum_size);
1419 OBD_FREE(lump, lum_size);
1423 static int ll_lov_setstripe(struct inode *inode, struct file *file,
1426 struct lov_user_md_v3 lumv3;
1427 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1428 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1429 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1432 int flags = FMODE_WRITE;
1435 /* first try with v1 which is smaller than v3 */
1436 lum_size = sizeof(struct lov_user_md_v1);
1437 if (cfs_copy_from_user(lumv1, lumv1p, lum_size))
1440 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3) {
1441 lum_size = sizeof(struct lov_user_md_v3);
1442 if (cfs_copy_from_user(&lumv3, lumv3p, lum_size))
1446 rc = ll_lov_setstripe_ea_info(inode, file, flags, lumv1, lum_size);
1448 put_user(0, &lumv1p->lmm_stripe_count);
1449 rc = obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode),
1450 0, ll_i2info(inode)->lli_smd,
1456 static int ll_lov_getstripe(struct inode *inode, unsigned long arg)
1458 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1463 return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, ll_i2dtexp(inode), 0, lsm,
1467 int ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1469 struct ll_inode_info *lli = ll_i2info(inode);
1470 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1471 struct ccc_grouplock grouplock;
1475 if (ll_file_nolock(file))
1476 RETURN(-EOPNOTSUPP);
1478 cfs_spin_lock(&lli->lli_lock);
1479 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1480 CWARN("group lock already existed with gid %lu\n",
1481 fd->fd_grouplock.cg_gid);
1482 cfs_spin_unlock(&lli->lli_lock);
1485 LASSERT(fd->fd_grouplock.cg_lock == NULL);
1486 cfs_spin_unlock(&lli->lli_lock);
1488 rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
1489 arg, (file->f_flags & O_NONBLOCK), &grouplock);
1493 cfs_spin_lock(&lli->lli_lock);
1494 if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
1495 cfs_spin_unlock(&lli->lli_lock);
1496 CERROR("another thread just won the race\n");
1497 cl_put_grouplock(&grouplock);
1501 fd->fd_flags |= LL_FILE_GROUP_LOCKED;
1502 fd->fd_grouplock = grouplock;
1503 cfs_spin_unlock(&lli->lli_lock);
1505 CDEBUG(D_INFO, "group lock %lu obtained\n", arg);
1509 int ll_put_grouplock(struct inode *inode, struct file *file, unsigned long arg)
1511 struct ll_inode_info *lli = ll_i2info(inode);
1512 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1513 struct ccc_grouplock grouplock;
1516 cfs_spin_lock(&lli->lli_lock);
1517 if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED)) {
1518 cfs_spin_unlock(&lli->lli_lock);
1519 CWARN("no group lock held\n");
1522 LASSERT(fd->fd_grouplock.cg_lock != NULL);
1524 if (fd->fd_grouplock.cg_gid != arg) {
1525 CWARN("group lock %lu doesn't match current id %lu\n",
1526 arg, fd->fd_grouplock.cg_gid);
1527 cfs_spin_unlock(&lli->lli_lock);
1531 grouplock = fd->fd_grouplock;
1532 memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
1533 fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
1534 cfs_spin_unlock(&lli->lli_lock);
1536 cl_put_grouplock(&grouplock);
1537 CDEBUG(D_INFO, "group lock %lu released\n", arg);
1542 * Close inode open handle
1544 * \param dentry [in] dentry which contains the inode
1545 * \param it [in,out] intent which contains open info and result
1548 * \retval <0 failure
1550 int ll_release_openhandle(struct dentry *dentry, struct lookup_intent *it)
1552 struct inode *inode = dentry->d_inode;
1553 struct obd_client_handle *och;
1559 /* Root ? Do nothing. */
1560 if (dentry->d_inode->i_sb->s_root == dentry)
1563 /* No open handle to close? Move away */
1564 if (!it_disposition(it, DISP_OPEN_OPEN))
1567 LASSERT(it_open_error(DISP_OPEN_OPEN, it) == 0);
1569 OBD_ALLOC(och, sizeof(*och));
1571 GOTO(out, rc = -ENOMEM);
1573 ll_och_fill(ll_i2sbi(inode)->ll_md_exp,
1574 ll_i2info(inode), it, och);
1576 rc = ll_close_inode_openhandle(ll_i2sbi(inode)->ll_md_exp,
1579 /* this one is in place of ll_file_open */
1580 if (it_disposition(it, DISP_ENQ_OPEN_REF))
1581 ptlrpc_req_finished(it->d.lustre.it_data);
1582 it_clear_disposition(it, DISP_ENQ_OPEN_REF);
1587 * Get size for inode for which FIEMAP mapping is requested.
1588 * Make the FIEMAP get_info call and returns the result.
1590 int ll_do_fiemap(struct inode *inode, struct ll_user_fiemap *fiemap,
1593 struct obd_export *exp = ll_i2dtexp(inode);
1594 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
1595 struct ll_fiemap_info_key fm_key = { .name = KEY_FIEMAP, };
1596 int vallen = num_bytes;
1600 /* Checks for fiemap flags */
1601 if (fiemap->fm_flags & ~LUSTRE_FIEMAP_FLAGS_COMPAT) {
1602 fiemap->fm_flags &= ~LUSTRE_FIEMAP_FLAGS_COMPAT;
1606 /* Check for FIEMAP_FLAG_SYNC */
1607 if (fiemap->fm_flags & FIEMAP_FLAG_SYNC) {
1608 rc = filemap_fdatawrite(inode->i_mapping);
1613 /* If the stripe_count > 1 and the application does not understand
1614 * DEVICE_ORDER flag, then it cannot interpret the extents correctly.
1616 if (lsm->lsm_stripe_count > 1 &&
1617 !(fiemap->fm_flags & FIEMAP_FLAG_DEVICE_ORDER))
1620 fm_key.oa.o_id = lsm->lsm_object_id;
1621 fm_key.oa.o_seq = lsm->lsm_object_seq;
1622 fm_key.oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1624 obdo_from_inode(&fm_key.oa, inode, &ll_i2info(inode)->lli_fid,
1626 /* If filesize is 0, then there would be no objects for mapping */
1627 if (fm_key.oa.o_size == 0) {
1628 fiemap->fm_mapped_extents = 0;
1632 memcpy(&fm_key.fiemap, fiemap, sizeof(*fiemap));
1634 rc = obd_get_info(exp, sizeof(fm_key), &fm_key, &vallen, fiemap, lsm);
1636 CERROR("obd_get_info failed: rc = %d\n", rc);
1641 int ll_fid2path(struct obd_export *exp, void *arg)
1643 struct getinfo_fid2path *gfout, *gfin;
1647 /* Need to get the buflen */
1648 OBD_ALLOC_PTR(gfin);
1651 if (cfs_copy_from_user(gfin, arg, sizeof(*gfin))) {
1656 outsize = sizeof(*gfout) + gfin->gf_pathlen;
1657 OBD_ALLOC(gfout, outsize);
1658 if (gfout == NULL) {
1662 memcpy(gfout, gfin, sizeof(*gfout));
1665 /* Call mdc_iocontrol */
1666 rc = obd_iocontrol(OBD_IOC_FID2PATH, exp, outsize, gfout, NULL);
1669 if (cfs_copy_to_user(arg, gfout, outsize))
1673 OBD_FREE(gfout, outsize);
1677 static int ll_ioctl_fiemap(struct inode *inode, unsigned long arg)
1679 struct ll_user_fiemap *fiemap_s;
1680 size_t num_bytes, ret_bytes;
1681 unsigned int extent_count;
1684 /* Get the extent count so we can calculate the size of
1685 * required fiemap buffer */
1686 if (get_user(extent_count,
1687 &((struct ll_user_fiemap __user *)arg)->fm_extent_count))
1689 num_bytes = sizeof(*fiemap_s) + (extent_count *
1690 sizeof(struct ll_fiemap_extent));
1692 OBD_VMALLOC(fiemap_s, num_bytes);
1693 if (fiemap_s == NULL)
1696 /* get the fiemap value */
1697 if (copy_from_user(fiemap_s,(struct ll_user_fiemap __user *)arg,
1699 GOTO(error, rc = -EFAULT);
1701 /* If fm_extent_count is non-zero, read the first extent since
1702 * it is used to calculate end_offset and device from previous
1705 if (copy_from_user(&fiemap_s->fm_extents[0],
1706 (char __user *)arg + sizeof(*fiemap_s),
1707 sizeof(struct ll_fiemap_extent)))
1708 GOTO(error, rc = -EFAULT);
1711 rc = ll_do_fiemap(inode, fiemap_s, num_bytes);
1715 ret_bytes = sizeof(struct ll_user_fiemap);
1717 if (extent_count != 0)
1718 ret_bytes += (fiemap_s->fm_mapped_extents *
1719 sizeof(struct ll_fiemap_extent));
1721 if (copy_to_user((void *)arg, fiemap_s, ret_bytes))
1725 OBD_VFREE(fiemap_s, num_bytes);
1729 int ll_file_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
1732 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1736 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),cmd=%x\n", inode->i_ino,
1737 inode->i_generation, inode, cmd);
1738 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1740 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1741 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1745 case LL_IOC_GETFLAGS:
1746 /* Get the current value of the file flags */
1747 return put_user(fd->fd_flags, (int *)arg);
1748 case LL_IOC_SETFLAGS:
1749 case LL_IOC_CLRFLAGS:
1750 /* Set or clear specific file flags */
1751 /* XXX This probably needs checks to ensure the flags are
1752 * not abused, and to handle any flag side effects.
1754 if (get_user(flags, (int *) arg))
1757 if (cmd == LL_IOC_SETFLAGS) {
1758 if ((flags & LL_FILE_IGNORE_LOCK) &&
1759 !(file->f_flags & O_DIRECT)) {
1760 CERROR("%s: unable to disable locking on "
1761 "non-O_DIRECT file\n", current->comm);
1765 fd->fd_flags |= flags;
1767 fd->fd_flags &= ~flags;
1770 case LL_IOC_LOV_SETSTRIPE:
1771 RETURN(ll_lov_setstripe(inode, file, arg));
1772 case LL_IOC_LOV_SETEA:
1773 RETURN(ll_lov_setea(inode, file, arg));
1774 case LL_IOC_LOV_GETSTRIPE:
1775 RETURN(ll_lov_getstripe(inode, arg));
1776 case LL_IOC_RECREATE_OBJ:
1777 RETURN(ll_lov_recreate_obj(inode, arg));
1778 case LL_IOC_RECREATE_FID:
1779 RETURN(ll_lov_recreate_fid(inode, arg));
1780 case FSFILT_IOC_FIEMAP:
1781 RETURN(ll_ioctl_fiemap(inode, arg));
1782 case FSFILT_IOC_GETFLAGS:
1783 case FSFILT_IOC_SETFLAGS:
1784 RETURN(ll_iocontrol(inode, file, cmd, arg));
1785 case FSFILT_IOC_GETVERSION_OLD:
1786 case FSFILT_IOC_GETVERSION:
1787 RETURN(put_user(inode->i_generation, (int *)arg));
1788 case LL_IOC_GROUP_LOCK:
1789 RETURN(ll_get_grouplock(inode, file, arg));
1790 case LL_IOC_GROUP_UNLOCK:
1791 RETURN(ll_put_grouplock(inode, file, arg));
1792 case IOC_OBD_STATFS:
1793 RETURN(ll_obd_statfs(inode, (void *)arg));
1795 /* We need to special case any other ioctls we want to handle,
1796 * to send them to the MDS/OST as appropriate and to properly
1797 * network encode the arg field.
1798 case FSFILT_IOC_SETVERSION_OLD:
1799 case FSFILT_IOC_SETVERSION:
1801 case LL_IOC_FLUSHCTX:
1802 RETURN(ll_flush_ctx(inode));
1803 case LL_IOC_PATH2FID: {
1804 if (cfs_copy_to_user((void *)arg, ll_inode2fid(inode),
1805 sizeof(struct lu_fid)))
1810 case OBD_IOC_FID2PATH:
1811 RETURN(ll_fid2path(ll_i2mdexp(inode), (void *)arg));
1813 case LL_IOC_GET_MDTIDX: {
1816 mdtidx = ll_get_mdt_idx(inode);
1820 if (put_user((int)mdtidx, (int*)arg))
1830 ll_iocontrol_call(inode, file, cmd, arg, &err))
1833 RETURN(obd_iocontrol(cmd, ll_i2dtexp(inode), 0, NULL,
1839 loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
1841 struct inode *inode = file->f_dentry->d_inode;
1844 retval = offset + ((origin == 2) ? i_size_read(inode) :
1845 (origin == 1) ? file->f_pos : 0);
1846 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), to=%Lu=%#Lx(%s)\n",
1847 inode->i_ino, inode->i_generation, inode, retval, retval,
1848 origin == 2 ? "SEEK_END": origin == 1 ? "SEEK_CUR" : "SEEK_SET");
1849 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LLSEEK, 1);
1851 if (origin == 2) { /* SEEK_END */
1852 int nonblock = 0, rc;
1854 if (file->f_flags & O_NONBLOCK)
1855 nonblock = LDLM_FL_BLOCK_NOWAIT;
1857 rc = cl_glimpse_size(inode);
1861 offset += i_size_read(inode);
1862 } else if (origin == 1) { /* SEEK_CUR */
1863 offset += file->f_pos;
1867 if (offset >= 0 && offset <= ll_file_maxbytes(inode)) {
1868 if (offset != file->f_pos) {
1869 file->f_pos = offset;
1877 int ll_fsync(struct file *file, struct dentry *dentry, int data)
1879 struct inode *inode = dentry->d_inode;
1880 struct ll_inode_info *lli = ll_i2info(inode);
1881 struct lov_stripe_md *lsm = lli->lli_smd;
1882 struct ptlrpc_request *req;
1883 struct obd_capa *oc;
1886 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1887 inode->i_generation, inode);
1888 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
1890 /* fsync's caller has already called _fdata{sync,write}, we want
1891 * that IO to finish before calling the osc and mdc sync methods */
1892 rc = filemap_fdatawait(inode->i_mapping);
1894 /* catch async errors that were recorded back when async writeback
1895 * failed for pages in this mapping. */
1896 err = lli->lli_async_rc;
1897 lli->lli_async_rc = 0;
1901 err = lov_test_and_clear_async_rc(lsm);
1906 oc = ll_mdscapa_get(inode);
1907 err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
1913 ptlrpc_req_finished(req);
1920 RETURN(rc ? rc : -ENOMEM);
1922 oa->o_id = lsm->lsm_object_id;
1923 oa->o_seq = lsm->lsm_object_seq;
1924 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1925 obdo_from_inode(oa, inode, &ll_i2info(inode)->lli_fid,
1926 OBD_MD_FLTYPE | OBD_MD_FLATIME |
1927 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1930 oc = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
1931 err = obd_sync(ll_i2sbi(inode)->ll_dt_exp, oa, lsm,
1932 0, OBD_OBJECT_EOF, oc);
1942 int ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
1944 struct inode *inode = file->f_dentry->d_inode;
1945 struct ll_sb_info *sbi = ll_i2sbi(inode);
1946 struct ldlm_enqueue_info einfo = { .ei_type = LDLM_FLOCK,
1947 .ei_cb_cp =ldlm_flock_completion_ast,
1948 .ei_cbdata = file_lock };
1949 struct md_op_data *op_data;
1950 struct lustre_handle lockh = {0};
1951 ldlm_policy_data_t flock;
1956 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
1957 inode->i_ino, file_lock);
1959 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
1961 if (file_lock->fl_flags & FL_FLOCK) {
1962 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
1963 /* set missing params for flock() calls */
1964 file_lock->fl_end = OFFSET_MAX;
1965 file_lock->fl_pid = current->tgid;
1967 flock.l_flock.pid = file_lock->fl_pid;
1968 flock.l_flock.start = file_lock->fl_start;
1969 flock.l_flock.end = file_lock->fl_end;
1971 switch (file_lock->fl_type) {
1973 einfo.ei_mode = LCK_PR;
1976 /* An unlock request may or may not have any relation to
1977 * existing locks so we may not be able to pass a lock handle
1978 * via a normal ldlm_lock_cancel() request. The request may even
1979 * unlock a byte range in the middle of an existing lock. In
1980 * order to process an unlock request we need all of the same
1981 * information that is given with a normal read or write record
1982 * lock request. To avoid creating another ldlm unlock (cancel)
1983 * message we'll treat a LCK_NL flock request as an unlock. */
1984 einfo.ei_mode = LCK_NL;
1987 einfo.ei_mode = LCK_PW;
1990 CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
2005 flags = LDLM_FL_BLOCK_NOWAIT;
2011 flags = LDLM_FL_TEST_LOCK;
2012 /* Save the old mode so that if the mode in the lock changes we
2013 * can decrement the appropriate reader or writer refcount. */
2014 file_lock->fl_type = einfo.ei_mode;
2017 CERROR("unknown fcntl lock command: %d\n", cmd);
2021 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2022 LUSTRE_OPC_ANY, NULL);
2023 if (IS_ERR(op_data))
2024 RETURN(PTR_ERR(op_data));
2026 CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#x, mode=%u, "
2027 "start="LPU64", end="LPU64"\n", inode->i_ino, flock.l_flock.pid,
2028 flags, einfo.ei_mode, flock.l_flock.start, flock.l_flock.end);
2030 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2031 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2033 ll_finish_md_op_data(op_data);
2035 if ((file_lock->fl_flags & FL_FLOCK) &&
2036 (rc == 0 || file_lock->fl_type == F_UNLCK))
2037 ll_flock_lock_file_wait(file, file_lock, (cmd == F_SETLKW));
2038 #ifdef HAVE_F_OP_FLOCK
2039 if ((file_lock->fl_flags & FL_POSIX) &&
2040 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
2041 !(flags & LDLM_FL_TEST_LOCK))
2042 posix_lock_file_wait(file, file_lock);
2048 int ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
2055 int ll_have_md_lock(struct inode *inode, __u64 bits)
2057 struct lustre_handle lockh;
2058 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2066 fid = &ll_i2info(inode)->lli_fid;
2067 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2069 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
2070 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2071 LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh)) {
2077 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
2078 struct lustre_handle *lockh)
2080 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2086 fid = &ll_i2info(inode)->lli_fid;
2087 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2089 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
2090 rc = md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2091 LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
2095 static int ll_inode_revalidate_fini(struct inode *inode, int rc) {
2096 if (rc == -ENOENT) { /* Already unlinked. Just update nlink
2097 * and return success */
2099 /* This path cannot be hit for regular files unless in
2100 * case of obscure races, so no need to to validate
2102 if (!S_ISREG(inode->i_mode) &&
2103 !S_ISDIR(inode->i_mode))
2108 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
2116 int __ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2119 struct inode *inode = dentry->d_inode;
2120 struct ptlrpc_request *req = NULL;
2121 struct ll_sb_info *sbi;
2122 struct obd_export *exp;
2127 CERROR("REPORT THIS LINE TO PETER\n");
2130 sbi = ll_i2sbi(inode);
2132 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
2133 inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
2135 exp = ll_i2mdexp(inode);
2137 if (exp->exp_connect_flags & OBD_CONNECT_ATTRFID) {
2138 struct lookup_intent oit = { .it_op = IT_GETATTR };
2139 struct md_op_data *op_data;
2141 /* Call getattr by fid, so do not provide name at all. */
2142 op_data = ll_prep_md_op_data(NULL, dentry->d_parent->d_inode,
2143 dentry->d_inode, NULL, 0, 0,
2144 LUSTRE_OPC_ANY, NULL);
2145 if (IS_ERR(op_data))
2146 RETURN(PTR_ERR(op_data));
2148 oit.it_create_mode |= M_CHECK_STALE;
2149 rc = md_intent_lock(exp, op_data, NULL, 0,
2150 /* we are not interested in name
2153 ll_md_blocking_ast, 0);
2154 ll_finish_md_op_data(op_data);
2155 oit.it_create_mode &= ~M_CHECK_STALE;
2157 rc = ll_inode_revalidate_fini(inode, rc);
2161 rc = ll_revalidate_it_finish(req, &oit, dentry);
2163 ll_intent_release(&oit);
2167 /* Unlinked? Unhash dentry, so it is not picked up later by
2168 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
2169 here to preserve get_cwd functionality on 2.6.
2171 if (!dentry->d_inode->i_nlink) {
2172 cfs_spin_lock(&ll_lookup_lock);
2173 spin_lock(&dcache_lock);
2174 ll_drop_dentry(dentry);
2175 spin_unlock(&dcache_lock);
2176 cfs_spin_unlock(&ll_lookup_lock);
2179 ll_lookup_finish_locks(&oit, dentry);
2180 } else if (!ll_have_md_lock(dentry->d_inode, ibits)) {
2181 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
2182 obd_valid valid = OBD_MD_FLGETATTR;
2183 struct md_op_data *op_data;
2186 if (S_ISREG(inode->i_mode)) {
2187 rc = ll_get_max_mdsize(sbi, &ealen);
2190 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
2193 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2194 0, ealen, LUSTRE_OPC_ANY,
2196 if (op_data == NULL)
2199 op_data->op_valid = valid;
2200 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
2201 * capa for this inode. Because we only keep capas of dirs
2203 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2204 ll_finish_md_op_data(op_data);
2206 rc = ll_inode_revalidate_fini(inode, rc);
2210 rc = ll_prep_inode(&inode, req, NULL);
2213 ptlrpc_req_finished(req);
2217 int ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it)
2219 struct inode *inode = dentry->d_inode;
2223 rc = __ll_inode_revalidate_it(dentry, it, MDS_INODELOCK_UPDATE |
2224 MDS_INODELOCK_LOOKUP);
2226 /* if object not yet allocated, don't validate size */
2227 if (rc == 0 && ll_i2info(dentry->d_inode)->lli_smd == NULL) {
2228 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
2229 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
2230 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
2234 /* cl_glimpse_size will prefer locally cached writes if they extend
2238 rc = cl_glimpse_size(inode);
2243 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
2244 struct lookup_intent *it, struct kstat *stat)
2246 struct inode *inode = de->d_inode;
2247 struct ll_inode_info *lli = ll_i2info(inode);
2250 res = ll_inode_revalidate_it(de, it);
2251 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETATTR, 1);
2256 stat->dev = inode->i_sb->s_dev;
2257 if (ll_need_32bit_api(ll_i2sbi(inode)))
2258 stat->ino = cl_fid_build_ino32(&lli->lli_fid);
2260 stat->ino = inode->i_ino;
2262 stat->mode = inode->i_mode;
2263 stat->nlink = inode->i_nlink;
2264 stat->uid = inode->i_uid;
2265 stat->gid = inode->i_gid;
2266 stat->rdev = kdev_t_to_nr(inode->i_rdev);
2267 stat->atime = inode->i_atime;
2268 stat->mtime = inode->i_mtime;
2269 stat->ctime = inode->i_ctime;
2270 #ifdef HAVE_INODE_BLKSIZE
2271 stat->blksize = inode->i_blksize;
2273 stat->blksize = 1 << inode->i_blkbits;
2276 stat->size = i_size_read(inode);
2277 stat->blocks = inode->i_blocks;
2281 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
2283 struct lookup_intent it = { .it_op = IT_GETATTR };
2285 return ll_getattr_it(mnt, de, &it, stat);
2288 #ifdef HAVE_LINUX_FIEMAP_H
2289 int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2290 __u64 start, __u64 len)
2294 struct ll_user_fiemap *fiemap;
2295 unsigned int extent_count = fieinfo->fi_extents_max;
2297 num_bytes = sizeof(*fiemap) + (extent_count *
2298 sizeof(struct ll_fiemap_extent));
2299 OBD_VMALLOC(fiemap, num_bytes);
2304 fiemap->fm_flags = fieinfo->fi_flags;
2305 fiemap->fm_extent_count = fieinfo->fi_extents_max;
2306 fiemap->fm_start = start;
2307 fiemap->fm_length = len;
2308 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
2309 sizeof(struct ll_fiemap_extent));
2311 rc = ll_do_fiemap(inode, fiemap, num_bytes);
2313 fieinfo->fi_flags = fiemap->fm_flags;
2314 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
2315 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
2316 fiemap->fm_mapped_extents * sizeof(struct ll_fiemap_extent));
2318 OBD_VFREE(fiemap, num_bytes);
2325 int lustre_check_acl(struct inode *inode, int mask)
2327 #ifdef CONFIG_FS_POSIX_ACL
2328 struct ll_inode_info *lli = ll_i2info(inode);
2329 struct posix_acl *acl;
2333 cfs_spin_lock(&lli->lli_lock);
2334 acl = posix_acl_dup(lli->lli_posix_acl);
2335 cfs_spin_unlock(&lli->lli_lock);
2340 rc = posix_acl_permission(inode, acl, mask);
2341 posix_acl_release(acl);
2349 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
2350 #ifndef HAVE_INODE_PERMISION_2ARGS
2351 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2353 int ll_inode_permission(struct inode *inode, int mask)
2359 /* as root inode are NOT getting validated in lookup operation,
2360 * need to do it before permission check. */
2362 if (inode == inode->i_sb->s_root->d_inode) {
2363 struct lookup_intent it = { .it_op = IT_LOOKUP };
2365 rc = __ll_inode_revalidate_it(inode->i_sb->s_root, &it,
2366 MDS_INODELOCK_LOOKUP);
2371 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
2372 inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
2374 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2375 return lustre_check_remote_perm(inode, mask);
2377 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2378 rc = generic_permission(inode, mask, lustre_check_acl);
2383 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2385 int mode = inode->i_mode;
2388 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), mask %o\n",
2389 inode->i_ino, inode->i_generation, inode, mask);
2391 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2392 return lustre_check_remote_perm(inode, mask);
2394 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2396 if ((mask & MAY_WRITE) && IS_RDONLY(inode) &&
2397 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
2399 if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
2401 if (current->fsuid == inode->i_uid) {
2404 if (((mode >> 3) & mask & S_IRWXO) != mask)
2406 rc = lustre_check_acl(inode, mask);
2410 goto check_capabilities;
2414 if (cfs_curproc_is_in_groups(inode->i_gid))
2417 if ((mode & mask & S_IRWXO) == mask)
2421 if (!(mask & MAY_EXEC) ||
2422 (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode))
2423 if (cfs_capable(CFS_CAP_DAC_OVERRIDE))
2426 if (cfs_capable(CFS_CAP_DAC_READ_SEARCH) && ((mask == MAY_READ) ||
2427 (S_ISDIR(inode->i_mode) && !(mask & MAY_WRITE))))
2434 #ifdef HAVE_FILE_READV
2435 #define READ_METHOD readv
2436 #define READ_FUNCTION ll_file_readv
2437 #define WRITE_METHOD writev
2438 #define WRITE_FUNCTION ll_file_writev
2440 #define READ_METHOD aio_read
2441 #define READ_FUNCTION ll_file_aio_read
2442 #define WRITE_METHOD aio_write
2443 #define WRITE_FUNCTION ll_file_aio_write
2446 /* -o localflock - only provides locally consistent flock locks */
2447 struct file_operations ll_file_operations = {
2448 .read = ll_file_read,
2449 .READ_METHOD = READ_FUNCTION,
2450 .write = ll_file_write,
2451 .WRITE_METHOD = WRITE_FUNCTION,
2452 .ioctl = ll_file_ioctl,
2453 .open = ll_file_open,
2454 .release = ll_file_release,
2455 .mmap = ll_file_mmap,
2456 .llseek = ll_file_seek,
2457 #ifdef HAVE_KERNEL_SENDFILE
2458 .sendfile = ll_file_sendfile,
2460 #ifdef HAVE_KERNEL_SPLICE_READ
2461 .splice_read = ll_file_splice_read,
2466 struct file_operations ll_file_operations_flock = {
2467 .read = ll_file_read,
2468 .READ_METHOD = READ_FUNCTION,
2469 .write = ll_file_write,
2470 .WRITE_METHOD = WRITE_FUNCTION,
2471 .ioctl = ll_file_ioctl,
2472 .open = ll_file_open,
2473 .release = ll_file_release,
2474 .mmap = ll_file_mmap,
2475 .llseek = ll_file_seek,
2476 #ifdef HAVE_KERNEL_SENDFILE
2477 .sendfile = ll_file_sendfile,
2479 #ifdef HAVE_KERNEL_SPLICE_READ
2480 .splice_read = ll_file_splice_read,
2483 #ifdef HAVE_F_OP_FLOCK
2484 .flock = ll_file_flock,
2486 .lock = ll_file_flock
2489 /* These are for -o noflock - to return ENOSYS on flock calls */
2490 struct file_operations ll_file_operations_noflock = {
2491 .read = ll_file_read,
2492 .READ_METHOD = READ_FUNCTION,
2493 .write = ll_file_write,
2494 .WRITE_METHOD = WRITE_FUNCTION,
2495 .ioctl = ll_file_ioctl,
2496 .open = ll_file_open,
2497 .release = ll_file_release,
2498 .mmap = ll_file_mmap,
2499 .llseek = ll_file_seek,
2500 #ifdef HAVE_KERNEL_SENDFILE
2501 .sendfile = ll_file_sendfile,
2503 #ifdef HAVE_KERNEL_SPLICE_READ
2504 .splice_read = ll_file_splice_read,
2507 #ifdef HAVE_F_OP_FLOCK
2508 .flock = ll_file_noflock,
2510 .lock = ll_file_noflock
2513 struct inode_operations ll_file_inode_operations = {
2514 #ifdef HAVE_VFS_INTENT_PATCHES
2515 .setattr_raw = ll_setattr_raw,
2517 .setattr = ll_setattr,
2518 .truncate = ll_truncate,
2519 .getattr = ll_getattr,
2520 .permission = ll_inode_permission,
2521 .setxattr = ll_setxattr,
2522 .getxattr = ll_getxattr,
2523 .listxattr = ll_listxattr,
2524 .removexattr = ll_removexattr,
2525 #ifdef HAVE_LINUX_FIEMAP_H
2526 .fiemap = ll_fiemap,
2530 /* dynamic ioctl number support routins */
2531 static struct llioc_ctl_data {
2532 cfs_rw_semaphore_t ioc_sem;
2533 cfs_list_t ioc_head;
2535 __RWSEM_INITIALIZER(llioc.ioc_sem),
2536 CFS_LIST_HEAD_INIT(llioc.ioc_head)
2541 cfs_list_t iocd_list;
2542 unsigned int iocd_size;
2543 llioc_callback_t iocd_cb;
2544 unsigned int iocd_count;
2545 unsigned int iocd_cmd[0];
2548 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
2551 struct llioc_data *in_data = NULL;
2554 if (cb == NULL || cmd == NULL ||
2555 count > LLIOC_MAX_CMD || count < 0)
2558 size = sizeof(*in_data) + count * sizeof(unsigned int);
2559 OBD_ALLOC(in_data, size);
2560 if (in_data == NULL)
2563 memset(in_data, 0, sizeof(*in_data));
2564 in_data->iocd_size = size;
2565 in_data->iocd_cb = cb;
2566 in_data->iocd_count = count;
2567 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
2569 cfs_down_write(&llioc.ioc_sem);
2570 cfs_list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
2571 cfs_up_write(&llioc.ioc_sem);
2576 void ll_iocontrol_unregister(void *magic)
2578 struct llioc_data *tmp;
2583 cfs_down_write(&llioc.ioc_sem);
2584 cfs_list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
2586 unsigned int size = tmp->iocd_size;
2588 cfs_list_del(&tmp->iocd_list);
2589 cfs_up_write(&llioc.ioc_sem);
2591 OBD_FREE(tmp, size);
2595 cfs_up_write(&llioc.ioc_sem);
2597 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
2600 EXPORT_SYMBOL(ll_iocontrol_register);
2601 EXPORT_SYMBOL(ll_iocontrol_unregister);
2603 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
2604 unsigned int cmd, unsigned long arg, int *rcp)
2606 enum llioc_iter ret = LLIOC_CONT;
2607 struct llioc_data *data;
2608 int rc = -EINVAL, i;
2610 cfs_down_read(&llioc.ioc_sem);
2611 cfs_list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
2612 for (i = 0; i < data->iocd_count; i++) {
2613 if (cmd != data->iocd_cmd[i])
2616 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
2620 if (ret == LLIOC_STOP)
2623 cfs_up_read(&llioc.ioc_sem);