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 #ifdef HAVE_FLUSH_OWNER_ID
1878 int ll_flush(struct file *file, fl_owner_t id)
1880 int ll_flush(struct file *file)
1883 struct inode *inode = file->f_dentry->d_inode;
1884 struct ll_inode_info *lli = ll_i2info(inode);
1885 struct lov_stripe_md *lsm = lli->lli_smd;
1888 /* catch async errors that were recorded back when async writeback
1889 * failed for pages in this mapping. */
1890 rc = lli->lli_async_rc;
1891 lli->lli_async_rc = 0;
1893 err = lov_test_and_clear_async_rc(lsm);
1898 return rc ? -EIO : 0;
1901 int ll_fsync(struct file *file, struct dentry *dentry, int data)
1903 struct inode *inode = dentry->d_inode;
1904 struct ll_inode_info *lli = ll_i2info(inode);
1905 struct lov_stripe_md *lsm = lli->lli_smd;
1906 struct ptlrpc_request *req;
1907 struct obd_capa *oc;
1910 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
1911 inode->i_generation, inode);
1912 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FSYNC, 1);
1914 /* fsync's caller has already called _fdata{sync,write}, we want
1915 * that IO to finish before calling the osc and mdc sync methods */
1916 rc = filemap_fdatawait(inode->i_mapping);
1918 /* catch async errors that were recorded back when async writeback
1919 * failed for pages in this mapping. */
1920 err = lli->lli_async_rc;
1921 lli->lli_async_rc = 0;
1925 err = lov_test_and_clear_async_rc(lsm);
1930 oc = ll_mdscapa_get(inode);
1931 err = md_sync(ll_i2sbi(inode)->ll_md_exp, ll_inode2fid(inode), oc,
1937 ptlrpc_req_finished(req);
1944 RETURN(rc ? rc : -ENOMEM);
1946 oa->o_id = lsm->lsm_object_id;
1947 oa->o_seq = lsm->lsm_object_seq;
1948 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1949 obdo_from_inode(oa, inode, &ll_i2info(inode)->lli_fid,
1950 OBD_MD_FLTYPE | OBD_MD_FLATIME |
1951 OBD_MD_FLMTIME | OBD_MD_FLCTIME |
1954 oc = ll_osscapa_get(inode, CAPA_OPC_OSS_WRITE);
1955 err = obd_sync(ll_i2sbi(inode)->ll_dt_exp, oa, lsm,
1956 0, OBD_OBJECT_EOF, oc);
1966 int ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
1968 struct inode *inode = file->f_dentry->d_inode;
1969 struct ll_sb_info *sbi = ll_i2sbi(inode);
1970 struct ldlm_enqueue_info einfo = { .ei_type = LDLM_FLOCK,
1971 .ei_cb_cp =ldlm_flock_completion_ast,
1972 .ei_cbdata = file_lock };
1973 struct md_op_data *op_data;
1974 struct lustre_handle lockh = {0};
1975 ldlm_policy_data_t flock;
1980 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu file_lock=%p\n",
1981 inode->i_ino, file_lock);
1983 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_FLOCK, 1);
1985 if (file_lock->fl_flags & FL_FLOCK) {
1986 LASSERT((cmd == F_SETLKW) || (cmd == F_SETLK));
1987 /* set missing params for flock() calls */
1988 file_lock->fl_end = OFFSET_MAX;
1989 file_lock->fl_pid = current->tgid;
1991 flock.l_flock.pid = file_lock->fl_pid;
1992 flock.l_flock.start = file_lock->fl_start;
1993 flock.l_flock.end = file_lock->fl_end;
1995 switch (file_lock->fl_type) {
1997 einfo.ei_mode = LCK_PR;
2000 /* An unlock request may or may not have any relation to
2001 * existing locks so we may not be able to pass a lock handle
2002 * via a normal ldlm_lock_cancel() request. The request may even
2003 * unlock a byte range in the middle of an existing lock. In
2004 * order to process an unlock request we need all of the same
2005 * information that is given with a normal read or write record
2006 * lock request. To avoid creating another ldlm unlock (cancel)
2007 * message we'll treat a LCK_NL flock request as an unlock. */
2008 einfo.ei_mode = LCK_NL;
2011 einfo.ei_mode = LCK_PW;
2014 CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
2029 flags = LDLM_FL_BLOCK_NOWAIT;
2035 flags = LDLM_FL_TEST_LOCK;
2036 /* Save the old mode so that if the mode in the lock changes we
2037 * can decrement the appropriate reader or writer refcount. */
2038 file_lock->fl_type = einfo.ei_mode;
2041 CERROR("unknown fcntl lock command: %d\n", cmd);
2045 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2046 LUSTRE_OPC_ANY, NULL);
2047 if (IS_ERR(op_data))
2048 RETURN(PTR_ERR(op_data));
2050 CDEBUG(D_DLMTRACE, "inode=%lu, pid=%u, flags=%#x, mode=%u, "
2051 "start="LPU64", end="LPU64"\n", inode->i_ino, flock.l_flock.pid,
2052 flags, einfo.ei_mode, flock.l_flock.start, flock.l_flock.end);
2054 rc = md_enqueue(sbi->ll_md_exp, &einfo, NULL,
2055 op_data, &lockh, &flock, 0, NULL /* req */, flags);
2057 ll_finish_md_op_data(op_data);
2059 if ((file_lock->fl_flags & FL_FLOCK) &&
2060 (rc == 0 || file_lock->fl_type == F_UNLCK))
2061 ll_flock_lock_file_wait(file, file_lock, (cmd == F_SETLKW));
2062 #ifdef HAVE_F_OP_FLOCK
2063 if ((file_lock->fl_flags & FL_POSIX) &&
2064 (rc == 0 || file_lock->fl_type == F_UNLCK) &&
2065 !(flags & LDLM_FL_TEST_LOCK))
2066 posix_lock_file_wait(file, file_lock);
2072 int ll_file_noflock(struct file *file, int cmd, struct file_lock *file_lock)
2079 int ll_have_md_lock(struct inode *inode, __u64 bits)
2081 struct lustre_handle lockh;
2082 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2090 fid = &ll_i2info(inode)->lli_fid;
2091 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2093 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
2094 if (md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2095 LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh)) {
2101 ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits,
2102 struct lustre_handle *lockh)
2104 ldlm_policy_data_t policy = { .l_inodebits = {bits}};
2110 fid = &ll_i2info(inode)->lli_fid;
2111 CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
2113 flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
2114 rc = md_lock_match(ll_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
2115 LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
2119 static int ll_inode_revalidate_fini(struct inode *inode, int rc) {
2120 if (rc == -ENOENT) { /* Already unlinked. Just update nlink
2121 * and return success */
2123 /* This path cannot be hit for regular files unless in
2124 * case of obscure races, so no need to to validate
2126 if (!S_ISREG(inode->i_mode) &&
2127 !S_ISDIR(inode->i_mode))
2132 CERROR("failure %d inode %lu\n", rc, inode->i_ino);
2140 int __ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it,
2143 struct inode *inode = dentry->d_inode;
2144 struct ptlrpc_request *req = NULL;
2145 struct ll_sb_info *sbi;
2146 struct obd_export *exp;
2151 CERROR("REPORT THIS LINE TO PETER\n");
2154 sbi = ll_i2sbi(inode);
2156 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),name=%s\n",
2157 inode->i_ino, inode->i_generation, inode, dentry->d_name.name);
2159 exp = ll_i2mdexp(inode);
2161 if (exp->exp_connect_flags & OBD_CONNECT_ATTRFID) {
2162 struct lookup_intent oit = { .it_op = IT_GETATTR };
2163 struct md_op_data *op_data;
2165 /* Call getattr by fid, so do not provide name at all. */
2166 op_data = ll_prep_md_op_data(NULL, dentry->d_parent->d_inode,
2167 dentry->d_inode, NULL, 0, 0,
2168 LUSTRE_OPC_ANY, NULL);
2169 if (IS_ERR(op_data))
2170 RETURN(PTR_ERR(op_data));
2172 oit.it_create_mode |= M_CHECK_STALE;
2173 rc = md_intent_lock(exp, op_data, NULL, 0,
2174 /* we are not interested in name
2177 ll_md_blocking_ast, 0);
2178 ll_finish_md_op_data(op_data);
2179 oit.it_create_mode &= ~M_CHECK_STALE;
2181 rc = ll_inode_revalidate_fini(inode, rc);
2185 rc = ll_revalidate_it_finish(req, &oit, dentry);
2187 ll_intent_release(&oit);
2191 /* Unlinked? Unhash dentry, so it is not picked up later by
2192 do_lookup() -> ll_revalidate_it(). We cannot use d_drop
2193 here to preserve get_cwd functionality on 2.6.
2195 if (!dentry->d_inode->i_nlink) {
2196 cfs_spin_lock(&ll_lookup_lock);
2197 spin_lock(&dcache_lock);
2198 ll_drop_dentry(dentry);
2199 spin_unlock(&dcache_lock);
2200 cfs_spin_unlock(&ll_lookup_lock);
2203 ll_lookup_finish_locks(&oit, dentry);
2204 } else if (!ll_have_md_lock(dentry->d_inode, ibits)) {
2205 struct ll_sb_info *sbi = ll_i2sbi(dentry->d_inode);
2206 obd_valid valid = OBD_MD_FLGETATTR;
2207 struct md_op_data *op_data;
2210 if (S_ISREG(inode->i_mode)) {
2211 rc = ll_get_max_mdsize(sbi, &ealen);
2214 valid |= OBD_MD_FLEASIZE | OBD_MD_FLMODEASIZE;
2217 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2218 0, ealen, LUSTRE_OPC_ANY,
2220 if (op_data == NULL)
2223 op_data->op_valid = valid;
2224 /* Once OBD_CONNECT_ATTRFID is not supported, we can't find one
2225 * capa for this inode. Because we only keep capas of dirs
2227 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2228 ll_finish_md_op_data(op_data);
2230 rc = ll_inode_revalidate_fini(inode, rc);
2234 rc = ll_prep_inode(&inode, req, NULL);
2237 ptlrpc_req_finished(req);
2241 int ll_inode_revalidate_it(struct dentry *dentry, struct lookup_intent *it)
2243 struct inode *inode = dentry->d_inode;
2247 rc = __ll_inode_revalidate_it(dentry, it, MDS_INODELOCK_UPDATE |
2248 MDS_INODELOCK_LOOKUP);
2250 /* if object not yet allocated, don't validate size */
2251 if (rc == 0 && ll_i2info(dentry->d_inode)->lli_smd == NULL) {
2252 LTIME_S(inode->i_atime) = ll_i2info(inode)->lli_lvb.lvb_atime;
2253 LTIME_S(inode->i_mtime) = ll_i2info(inode)->lli_lvb.lvb_mtime;
2254 LTIME_S(inode->i_ctime) = ll_i2info(inode)->lli_lvb.lvb_ctime;
2258 /* cl_glimpse_size will prefer locally cached writes if they extend
2262 rc = cl_glimpse_size(inode);
2267 int ll_getattr_it(struct vfsmount *mnt, struct dentry *de,
2268 struct lookup_intent *it, struct kstat *stat)
2270 struct inode *inode = de->d_inode;
2271 struct ll_inode_info *lli = ll_i2info(inode);
2274 res = ll_inode_revalidate_it(de, it);
2275 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETATTR, 1);
2280 stat->dev = inode->i_sb->s_dev;
2281 if (ll_need_32bit_api(ll_i2sbi(inode)))
2282 stat->ino = cl_fid_build_ino32(&lli->lli_fid);
2284 stat->ino = inode->i_ino;
2286 stat->mode = inode->i_mode;
2287 stat->nlink = inode->i_nlink;
2288 stat->uid = inode->i_uid;
2289 stat->gid = inode->i_gid;
2290 stat->rdev = kdev_t_to_nr(inode->i_rdev);
2291 stat->atime = inode->i_atime;
2292 stat->mtime = inode->i_mtime;
2293 stat->ctime = inode->i_ctime;
2294 #ifdef HAVE_INODE_BLKSIZE
2295 stat->blksize = inode->i_blksize;
2297 stat->blksize = 1 << inode->i_blkbits;
2300 stat->size = i_size_read(inode);
2301 stat->blocks = inode->i_blocks;
2305 int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
2307 struct lookup_intent it = { .it_op = IT_GETATTR };
2309 return ll_getattr_it(mnt, de, &it, stat);
2312 #ifdef HAVE_LINUX_FIEMAP_H
2313 int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
2314 __u64 start, __u64 len)
2318 struct ll_user_fiemap *fiemap;
2319 unsigned int extent_count = fieinfo->fi_extents_max;
2321 num_bytes = sizeof(*fiemap) + (extent_count *
2322 sizeof(struct ll_fiemap_extent));
2323 OBD_VMALLOC(fiemap, num_bytes);
2328 fiemap->fm_flags = fieinfo->fi_flags;
2329 fiemap->fm_extent_count = fieinfo->fi_extents_max;
2330 fiemap->fm_start = start;
2331 fiemap->fm_length = len;
2332 memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
2333 sizeof(struct ll_fiemap_extent));
2335 rc = ll_do_fiemap(inode, fiemap, num_bytes);
2337 fieinfo->fi_flags = fiemap->fm_flags;
2338 fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
2339 memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
2340 fiemap->fm_mapped_extents * sizeof(struct ll_fiemap_extent));
2342 OBD_VFREE(fiemap, num_bytes);
2349 int lustre_check_acl(struct inode *inode, int mask)
2351 #ifdef CONFIG_FS_POSIX_ACL
2352 struct ll_inode_info *lli = ll_i2info(inode);
2353 struct posix_acl *acl;
2357 cfs_spin_lock(&lli->lli_lock);
2358 acl = posix_acl_dup(lli->lli_posix_acl);
2359 cfs_spin_unlock(&lli->lli_lock);
2364 rc = posix_acl_permission(inode, acl, mask);
2365 posix_acl_release(acl);
2373 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10))
2374 #ifndef HAVE_INODE_PERMISION_2ARGS
2375 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2377 int ll_inode_permission(struct inode *inode, int mask)
2383 /* as root inode are NOT getting validated in lookup operation,
2384 * need to do it before permission check. */
2386 if (inode == inode->i_sb->s_root->d_inode) {
2387 struct lookup_intent it = { .it_op = IT_LOOKUP };
2389 rc = __ll_inode_revalidate_it(inode->i_sb->s_root, &it,
2390 MDS_INODELOCK_LOOKUP);
2395 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), inode mode %x mask %o\n",
2396 inode->i_ino, inode->i_generation, inode, inode->i_mode, mask);
2398 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2399 return lustre_check_remote_perm(inode, mask);
2401 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2402 rc = generic_permission(inode, mask, lustre_check_acl);
2407 int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd)
2409 int mode = inode->i_mode;
2412 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), mask %o\n",
2413 inode->i_ino, inode->i_generation, inode, mask);
2415 if (ll_i2sbi(inode)->ll_flags & LL_SBI_RMT_CLIENT)
2416 return lustre_check_remote_perm(inode, mask);
2418 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_INODE_PERM, 1);
2420 if ((mask & MAY_WRITE) && IS_RDONLY(inode) &&
2421 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
2423 if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode))
2425 if (current->fsuid == inode->i_uid) {
2428 if (((mode >> 3) & mask & S_IRWXO) != mask)
2430 rc = lustre_check_acl(inode, mask);
2434 goto check_capabilities;
2438 if (cfs_curproc_is_in_groups(inode->i_gid))
2441 if ((mode & mask & S_IRWXO) == mask)
2445 if (!(mask & MAY_EXEC) ||
2446 (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode))
2447 if (cfs_capable(CFS_CAP_DAC_OVERRIDE))
2450 if (cfs_capable(CFS_CAP_DAC_READ_SEARCH) && ((mask == MAY_READ) ||
2451 (S_ISDIR(inode->i_mode) && !(mask & MAY_WRITE))))
2458 #ifdef HAVE_FILE_READV
2459 #define READ_METHOD readv
2460 #define READ_FUNCTION ll_file_readv
2461 #define WRITE_METHOD writev
2462 #define WRITE_FUNCTION ll_file_writev
2464 #define READ_METHOD aio_read
2465 #define READ_FUNCTION ll_file_aio_read
2466 #define WRITE_METHOD aio_write
2467 #define WRITE_FUNCTION ll_file_aio_write
2470 /* -o localflock - only provides locally consistent flock locks */
2471 struct file_operations ll_file_operations = {
2472 .read = ll_file_read,
2473 .READ_METHOD = READ_FUNCTION,
2474 .write = ll_file_write,
2475 .WRITE_METHOD = WRITE_FUNCTION,
2476 .ioctl = ll_file_ioctl,
2477 .open = ll_file_open,
2478 .release = ll_file_release,
2479 .mmap = ll_file_mmap,
2480 .llseek = ll_file_seek,
2481 #ifdef HAVE_KERNEL_SENDFILE
2482 .sendfile = ll_file_sendfile,
2484 #ifdef HAVE_KERNEL_SPLICE_READ
2485 .splice_read = ll_file_splice_read,
2491 struct file_operations ll_file_operations_flock = {
2492 .read = ll_file_read,
2493 .READ_METHOD = READ_FUNCTION,
2494 .write = ll_file_write,
2495 .WRITE_METHOD = WRITE_FUNCTION,
2496 .ioctl = ll_file_ioctl,
2497 .open = ll_file_open,
2498 .release = ll_file_release,
2499 .mmap = ll_file_mmap,
2500 .llseek = ll_file_seek,
2501 #ifdef HAVE_KERNEL_SENDFILE
2502 .sendfile = ll_file_sendfile,
2504 #ifdef HAVE_KERNEL_SPLICE_READ
2505 .splice_read = ll_file_splice_read,
2509 #ifdef HAVE_F_OP_FLOCK
2510 .flock = ll_file_flock,
2512 .lock = ll_file_flock
2515 /* These are for -o noflock - to return ENOSYS on flock calls */
2516 struct file_operations ll_file_operations_noflock = {
2517 .read = ll_file_read,
2518 .READ_METHOD = READ_FUNCTION,
2519 .write = ll_file_write,
2520 .WRITE_METHOD = WRITE_FUNCTION,
2521 .ioctl = ll_file_ioctl,
2522 .open = ll_file_open,
2523 .release = ll_file_release,
2524 .mmap = ll_file_mmap,
2525 .llseek = ll_file_seek,
2526 #ifdef HAVE_KERNEL_SENDFILE
2527 .sendfile = ll_file_sendfile,
2529 #ifdef HAVE_KERNEL_SPLICE_READ
2530 .splice_read = ll_file_splice_read,
2534 #ifdef HAVE_F_OP_FLOCK
2535 .flock = ll_file_noflock,
2537 .lock = ll_file_noflock
2540 struct inode_operations ll_file_inode_operations = {
2541 #ifdef HAVE_VFS_INTENT_PATCHES
2542 .setattr_raw = ll_setattr_raw,
2544 .setattr = ll_setattr,
2545 .truncate = ll_truncate,
2546 .getattr = ll_getattr,
2547 .permission = ll_inode_permission,
2548 .setxattr = ll_setxattr,
2549 .getxattr = ll_getxattr,
2550 .listxattr = ll_listxattr,
2551 .removexattr = ll_removexattr,
2552 #ifdef HAVE_LINUX_FIEMAP_H
2553 .fiemap = ll_fiemap,
2557 /* dynamic ioctl number support routins */
2558 static struct llioc_ctl_data {
2559 cfs_rw_semaphore_t ioc_sem;
2560 cfs_list_t ioc_head;
2562 __RWSEM_INITIALIZER(llioc.ioc_sem),
2563 CFS_LIST_HEAD_INIT(llioc.ioc_head)
2568 cfs_list_t iocd_list;
2569 unsigned int iocd_size;
2570 llioc_callback_t iocd_cb;
2571 unsigned int iocd_count;
2572 unsigned int iocd_cmd[0];
2575 void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd)
2578 struct llioc_data *in_data = NULL;
2581 if (cb == NULL || cmd == NULL ||
2582 count > LLIOC_MAX_CMD || count < 0)
2585 size = sizeof(*in_data) + count * sizeof(unsigned int);
2586 OBD_ALLOC(in_data, size);
2587 if (in_data == NULL)
2590 memset(in_data, 0, sizeof(*in_data));
2591 in_data->iocd_size = size;
2592 in_data->iocd_cb = cb;
2593 in_data->iocd_count = count;
2594 memcpy(in_data->iocd_cmd, cmd, sizeof(unsigned int) * count);
2596 cfs_down_write(&llioc.ioc_sem);
2597 cfs_list_add_tail(&in_data->iocd_list, &llioc.ioc_head);
2598 cfs_up_write(&llioc.ioc_sem);
2603 void ll_iocontrol_unregister(void *magic)
2605 struct llioc_data *tmp;
2610 cfs_down_write(&llioc.ioc_sem);
2611 cfs_list_for_each_entry(tmp, &llioc.ioc_head, iocd_list) {
2613 unsigned int size = tmp->iocd_size;
2615 cfs_list_del(&tmp->iocd_list);
2616 cfs_up_write(&llioc.ioc_sem);
2618 OBD_FREE(tmp, size);
2622 cfs_up_write(&llioc.ioc_sem);
2624 CWARN("didn't find iocontrol register block with magic: %p\n", magic);
2627 EXPORT_SYMBOL(ll_iocontrol_register);
2628 EXPORT_SYMBOL(ll_iocontrol_unregister);
2630 enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file,
2631 unsigned int cmd, unsigned long arg, int *rcp)
2633 enum llioc_iter ret = LLIOC_CONT;
2634 struct llioc_data *data;
2635 int rc = -EINVAL, i;
2637 cfs_down_read(&llioc.ioc_sem);
2638 cfs_list_for_each_entry(data, &llioc.ioc_head, iocd_list) {
2639 for (i = 0; i < data->iocd_count; i++) {
2640 if (cmd != data->iocd_cmd[i])
2643 ret = data->iocd_cb(inode, file, cmd, arg, data, &rc);
2647 if (ret == LLIOC_STOP)
2650 cfs_up_read(&llioc.ioc_sem);