4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/llite/llite_lib.c
38 * Lustre Light Super operations
41 #define DEBUG_SUBSYSTEM S_LLITE
43 #include <linux/module.h>
44 #include <linux/statfs.h>
45 #include <linux/types.h>
46 #include <linux/version.h>
48 #include <linux/user_namespace.h>
49 #ifdef HAVE_UIDGID_HEADER
50 # include <linux/uidgid.h>
53 #include <lustre_ioctl.h>
54 #include <lustre_ha.h>
55 #include <lustre_dlm.h>
56 #include <lprocfs_status.h>
57 #include <lustre_disk.h>
58 #include <lustre_param.h>
59 #include <lustre_log.h>
60 #include <cl_object.h>
61 #include <obd_cksum.h>
62 #include "llite_internal.h"
64 struct kmem_cache *ll_file_data_slab;
67 #define log2(n) ffz(~(n))
70 static struct ll_sb_info *ll_init_sbi(void)
72 struct ll_sb_info *sbi = NULL;
74 unsigned long lru_page_max;
84 spin_lock_init(&sbi->ll_lock);
85 mutex_init(&sbi->ll_lco.lco_lock);
86 spin_lock_init(&sbi->ll_pp_extent_lock);
87 spin_lock_init(&sbi->ll_process_lock);
88 sbi->ll_rw_stats_on = 0;
91 pages = si.totalram - si.totalhigh;
92 lru_page_max = pages / 2;
94 /* initialize ll_cache data */
95 sbi->ll_cache = cl_cache_init(lru_page_max);
96 if (sbi->ll_cache == NULL) {
97 OBD_FREE(sbi, sizeof(*sbi));
101 sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
102 SBI_DEFAULT_READAHEAD_MAX);
103 sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
104 sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
105 SBI_DEFAULT_READAHEAD_WHOLE_MAX;
106 INIT_LIST_HEAD(&sbi->ll_conn_chain);
107 INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
109 ll_generate_random_uuid(uuid);
110 class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
111 CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
113 sbi->ll_flags |= LL_SBI_VERBOSE;
114 #ifdef ENABLE_CHECKSUM
115 sbi->ll_flags |= LL_SBI_CHECKSUM;
118 #ifdef HAVE_LRU_RESIZE_SUPPORT
119 sbi->ll_flags |= LL_SBI_LRU_RESIZE;
122 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
123 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
125 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
129 /* metadata statahead is enabled by default */
130 sbi->ll_sa_max = LL_SA_RPC_DEF;
131 atomic_set(&sbi->ll_sa_total, 0);
132 atomic_set(&sbi->ll_sa_wrong, 0);
133 atomic_set(&sbi->ll_sa_running, 0);
134 atomic_set(&sbi->ll_agl_total, 0);
135 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
138 sbi->ll_squash.rsi_uid = 0;
139 sbi->ll_squash.rsi_gid = 0;
140 INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
141 init_rwsem(&sbi->ll_squash.rsi_sem);
146 static void ll_free_sbi(struct super_block *sb)
148 struct ll_sb_info *sbi = ll_s2sbi(sb);
152 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
153 cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
154 if (sbi->ll_cache != NULL) {
155 cl_cache_decref(sbi->ll_cache);
156 sbi->ll_cache = NULL;
158 OBD_FREE(sbi, sizeof(*sbi));
163 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
164 struct vfsmount *mnt)
166 struct inode *root = NULL;
167 struct ll_sb_info *sbi = ll_s2sbi(sb);
168 struct obd_device *obd;
169 struct obd_statfs *osfs = NULL;
170 struct ptlrpc_request *request = NULL;
171 struct obd_connect_data *data = NULL;
172 struct obd_uuid *uuid;
173 struct md_op_data *op_data;
174 struct lustre_md lmd;
176 int size, err, checksum;
179 obd = class_name2obd(md);
181 CERROR("MD %s: not setup or attached\n", md);
195 /* indicate the features supported by this client */
196 data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
197 OBD_CONNECT_ATTRFID |
198 OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
199 OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
200 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
201 OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
202 OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
203 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
204 OBD_CONNECT_EINPROGRESS |
205 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
206 OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS |
207 OBD_CONNECT_MAX_EASIZE |
208 OBD_CONNECT_FLOCK_DEAD |
209 OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
210 OBD_CONNECT_OPEN_BY_FID |
211 OBD_CONNECT_DIR_STRIPE |
212 OBD_CONNECT_BULK_MBITS;
214 #ifdef HAVE_LRU_RESIZE_SUPPORT
215 if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
216 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
218 #ifdef CONFIG_FS_POSIX_ACL
219 data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
222 if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
223 /* flag mdc connection as lightweight, only used for test
224 * purpose, use with care */
225 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
227 data->ocd_ibits_known = MDS_INODELOCK_FULL;
228 data->ocd_version = LUSTRE_VERSION_CODE;
230 if (sb->s_flags & MS_RDONLY)
231 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
232 if (sbi->ll_flags & LL_SBI_USER_XATTR)
233 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
235 #ifdef HAVE_MS_FLOCK_LOCK
236 /* force vfs to use lustre handler for flock() calls - bug 10743 */
237 sb->s_flags |= MS_FLOCK_LOCK;
239 #ifdef MS_HAS_NEW_AOPS
240 sb->s_flags |= MS_HAS_NEW_AOPS;
243 if (sbi->ll_flags & LL_SBI_FLOCK)
244 sbi->ll_fop = &ll_file_operations_flock;
245 else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
246 sbi->ll_fop = &ll_file_operations;
248 sbi->ll_fop = &ll_file_operations_noflock;
251 data->ocd_connect_flags |= OBD_CONNECT_REAL;
252 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
253 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
255 /* always ping even if server suppress_pings */
256 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
257 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
259 data->ocd_brw_size = MD_MAX_BRW_SIZE;
261 err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
263 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
264 "recovery, of which this client is not a "
265 "part. Please wait for recovery to complete,"
266 " abort, or time out.\n", md);
269 CERROR("cannot connect to %s: rc = %d\n", md, err);
273 sbi->ll_md_exp->exp_connect_data = *data;
275 err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
276 LUSTRE_SEQ_METADATA);
278 CERROR("%s: Can't init metadata layer FID infrastructure, "
279 "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
283 /* For mount, we only need fs info from MDT0, and also in DNE, it
284 * can make sure the client can be mounted as long as MDT0 is
286 err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
287 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
288 OBD_STATFS_FOR_MDT0);
290 GOTO(out_md_fid, err);
292 /* This needs to be after statfs to ensure connect has finished.
293 * Note that "data" does NOT contain the valid connect reply.
294 * If connecting to a 1.8 server there will be no LMV device, so
295 * we can access the MDC export directly and exp_connect_flags will
296 * be non-zero, but if accessing an upgraded 2.1 server it will
297 * have the correct flags filled in.
298 * XXX: fill in the LMV exp_connect_flags from MDC(s). */
299 valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
300 if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
301 valid != CLIENT_CONNECT_MDT_REQD) {
304 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
305 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
306 valid ^ CLIENT_CONNECT_MDT_REQD, ",");
307 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
308 "feature(s) needed for correct operation "
309 "of this client (%s). Please upgrade "
310 "server or downgrade client.\n",
311 sbi->ll_md_exp->exp_obd->obd_name, buf);
312 OBD_FREE(buf, PAGE_CACHE_SIZE);
313 GOTO(out_md_fid, err = -EPROTO);
316 size = sizeof(*data);
317 err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
318 KEY_CONN_DATA, &size, data);
320 CERROR("%s: Get connect data failed: rc = %d\n",
321 sbi->ll_md_exp->exp_obd->obd_name, err);
322 GOTO(out_md_fid, err);
325 LASSERT(osfs->os_bsize);
326 sb->s_blocksize = osfs->os_bsize;
327 sb->s_blocksize_bits = log2(osfs->os_bsize);
328 sb->s_magic = LL_SUPER_MAGIC;
329 sb->s_maxbytes = MAX_LFS_FILESIZE;
330 sbi->ll_namelen = osfs->os_namelen;
332 if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
333 !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
334 LCONSOLE_INFO("Disabling user_xattr feature because "
335 "it is not supported on the server\n");
336 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
339 if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
341 sb->s_flags |= MS_POSIXACL;
343 sbi->ll_flags |= LL_SBI_ACL;
345 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
347 sb->s_flags &= ~MS_POSIXACL;
349 sbi->ll_flags &= ~LL_SBI_ACL;
352 if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
353 if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
354 sbi->ll_flags |= LL_SBI_RMT_CLIENT;
355 LCONSOLE_INFO("client is set as remote by default.\n");
358 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
359 sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
360 LCONSOLE_INFO("client claims to be remote, but server "
361 "rejected, forced to be local.\n");
365 if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
366 sbi->ll_flags |= LL_SBI_64BIT_HASH;
368 if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
369 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
371 sbi->ll_md_brw_pages = 1;
373 if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
374 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
376 if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
377 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
378 LCONSOLE_INFO("%s: disabling xattr cache due to "
379 "unknown maximum xattr size.\n", dt);
381 sbi->ll_flags |= LL_SBI_XATTR_CACHE;
382 sbi->ll_xattr_cache_enabled = 1;
386 obd = class_name2obd(dt);
388 CERROR("DT %s: not setup or attached\n", dt);
389 GOTO(out_md_fid, err = -ENODEV);
392 /* pass client page size via ocd_grant_blkbits, the server should report
393 * back its backend blocksize for grant calculation purpose */
394 data->ocd_grant_blkbits = PAGE_SHIFT;
396 data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
397 OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
398 OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
399 OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
400 OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
401 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
402 OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
403 OBD_CONNECT_MAXBYTES |
404 OBD_CONNECT_EINPROGRESS |
405 OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
406 OBD_CONNECT_LAYOUTLOCK |
407 OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
408 OBD_CONNECT_BULK_MBITS;
410 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
411 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
413 if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
414 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
415 * disabled by default, because it can still be enabled on the
416 * fly via /proc. As a consequence, we still need to come to an
417 * agreement on the supported algorithms at connect time */
418 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
420 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
421 data->ocd_cksum_types = OBD_CKSUM_ADLER;
423 data->ocd_cksum_types = cksum_types_supported_client();
426 #ifdef HAVE_LRU_RESIZE_SUPPORT
427 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
429 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
430 data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
432 /* always ping even if server suppress_pings */
433 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
434 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
436 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
437 "ocd_grant: %d\n", data->ocd_connect_flags,
438 data->ocd_version, data->ocd_grant);
440 obd->obd_upcall.onu_owner = &sbi->ll_lco;
441 obd->obd_upcall.onu_upcall = cl_ocd_update;
443 data->ocd_brw_size = DT_MAX_BRW_SIZE;
445 err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
448 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
449 "recovery, of which this client is not a "
450 "part. Please wait for recovery to "
451 "complete, abort, or time out.\n", dt);
454 CERROR("%s: Cannot connect to %s: rc = %d\n",
455 sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
459 sbi->ll_dt_exp->exp_connect_data = *data;
461 err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
462 LUSTRE_SEQ_METADATA);
464 CERROR("%s: Can't init data layer FID infrastructure, "
465 "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
469 mutex_lock(&sbi->ll_lco.lco_lock);
470 sbi->ll_lco.lco_flags = data->ocd_connect_flags;
471 sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
472 sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
473 mutex_unlock(&sbi->ll_lco.lco_lock);
475 fid_zero(&sbi->ll_root_fid);
476 err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid);
478 CERROR("cannot mds_connect: rc = %d\n", err);
479 GOTO(out_lock_cn_cb, err);
481 if (!fid_is_sane(&sbi->ll_root_fid)) {
482 CERROR("%s: Invalid root fid "DFID" during mount\n",
483 sbi->ll_md_exp->exp_obd->obd_name,
484 PFID(&sbi->ll_root_fid));
485 GOTO(out_lock_cn_cb, err = -EINVAL);
487 CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
489 sb->s_op = &lustre_super_operations;
490 #if THREAD_SIZE >= 8192 /*b=17630*/
491 sb->s_export_op = &lustre_export_operations;
495 * XXX: move this to after cbd setup? */
496 valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
497 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
498 valid |= OBD_MD_FLRMTPERM;
499 else if (sbi->ll_flags & LL_SBI_ACL)
500 valid |= OBD_MD_FLACL;
502 OBD_ALLOC_PTR(op_data);
504 GOTO(out_lock_cn_cb, err = -ENOMEM);
506 op_data->op_fid1 = sbi->ll_root_fid;
507 op_data->op_mode = 0;
508 op_data->op_valid = valid;
510 err = md_getattr(sbi->ll_md_exp, op_data, &request);
512 OBD_FREE_PTR(op_data);
514 CERROR("%s: md_getattr failed for root: rc = %d\n",
515 sbi->ll_md_exp->exp_obd->obd_name, err);
516 GOTO(out_lock_cn_cb, err);
519 err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
520 sbi->ll_md_exp, &lmd);
522 CERROR("failed to understand root inode md: rc = %d\n", err);
523 ptlrpc_req_finished(request);
524 GOTO(out_lock_cn_cb, err);
527 LASSERT(fid_is_sane(&sbi->ll_root_fid));
528 root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
529 sbi->ll_flags & LL_SBI_32BIT_API),
531 md_free_lustre_md(sbi->ll_md_exp, &lmd);
532 ptlrpc_req_finished(request);
535 #ifdef CONFIG_FS_POSIX_ACL
537 posix_acl_release(lmd.posix_acl);
538 lmd.posix_acl = NULL;
541 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
543 CERROR("lustre_lite: bad iget4 for root\n");
547 #ifdef CONFIG_FS_POSIX_ACL
548 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
549 rct_init(&sbi->ll_rct);
550 et_init(&sbi->ll_et);
554 checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
555 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
556 KEY_CHECKSUM, sizeof(checksum), &checksum,
560 err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
561 KEY_CACHE_SET, sizeof(*sbi->ll_cache),
562 sbi->ll_cache, NULL);
564 sb->s_root = d_make_root(root);
565 if (sb->s_root == NULL) {
566 CERROR("%s: can't make root dentry\n",
567 ll_get_fsname(sb, NULL, 0));
568 GOTO(out_root, err = -ENOMEM);
570 #ifdef HAVE_DCACHE_LOCK
571 sb->s_root->d_op = &ll_d_ops;
574 sbi->ll_sdev_orig = sb->s_dev;
576 /* We set sb->s_dev equal on all lustre clients in order to support
577 * NFS export clustering. NFSD requires that the FSID be the same
579 /* s_dev is also used in lt_compare() to compare two fs, but that is
580 * only a node-local comparison. */
581 uuid = obd_get_uuid(sbi->ll_md_exp);
583 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
589 if (proc_lustre_fs_root != NULL) {
590 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
593 CERROR("%s: could not register mount in lprocfs: "
594 "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
604 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
606 obd_disconnect(sbi->ll_dt_exp);
607 sbi->ll_dt_exp = NULL;
609 obd_fid_fini(sbi->ll_md_exp->exp_obd);
611 obd_disconnect(sbi->ll_md_exp);
612 sbi->ll_md_exp = NULL;
621 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
625 size = sizeof(*lmmsize);
626 rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
627 KEY_MAX_EASIZE, &size, lmmsize);
629 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
630 sbi->ll_dt_exp->exp_obd->obd_name, rc);
635 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
636 KEY_MAX_EASIZE, &size, lmmsize);
638 CERROR("Get max mdsize error rc %d\n", rc);
644 * Get the value of the default_easize parameter.
646 * \see client_obd::cl_default_mds_easize
648 * \param[in] sbi superblock info for this filesystem
649 * \param[out] lmmsize pointer to storage location for value
651 * \retval 0 on success
652 * \retval negative negated errno on failure
654 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
659 rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
660 KEY_DEFAULT_EASIZE, &size, lmmsize);
662 CERROR("Get default mdsize error rc %d\n", rc);
668 * Set the default_easize parameter to the given value.
670 * \see client_obd::cl_default_mds_easize
672 * \param[in] sbi superblock info for this filesystem
673 * \param[in] lmmsize the size to set
675 * \retval 0 on success
676 * \retval negative negated errno on failure
678 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
682 if (lmmsize < sizeof(struct lov_mds_md) ||
683 lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
686 rc = obd_set_info_async(NULL, sbi->ll_md_exp,
687 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
688 sizeof(int), &lmmsize, NULL);
693 static void ll_dump_inode(struct inode *inode)
695 struct ll_d_hlist_node *tmp;
696 int dentry_count = 0;
698 LASSERT(inode != NULL);
700 ll_d_hlist_for_each(tmp, &inode->i_dentry)
703 CERROR("%s: inode %p dump: dev=%s fid="DFID
704 " mode=%o count=%u, %d dentries\n",
705 ll_get_fsname(inode->i_sb, NULL, 0), inode,
706 ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
707 inode->i_mode, atomic_read(&inode->i_count), dentry_count);
710 void lustre_dump_dentry(struct dentry *dentry, int recur)
712 struct list_head *tmp;
715 LASSERT(dentry != NULL);
717 list_for_each(tmp, &dentry->d_subdirs)
720 CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
721 " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
722 dentry->d_name.len, dentry->d_name.name,
723 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
724 dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
725 dentry->d_flags, dentry->d_fsdata, subdirs);
726 if (dentry->d_inode != NULL)
727 ll_dump_inode(dentry->d_inode);
732 list_for_each(tmp, &dentry->d_subdirs) {
733 struct dentry *d = list_entry(tmp, struct dentry, d_child);
734 lustre_dump_dentry(d, recur - 1);
738 static void client_common_put_super(struct super_block *sb)
740 struct ll_sb_info *sbi = ll_s2sbi(sb);
743 #ifdef CONFIG_FS_POSIX_ACL
744 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
745 et_fini(&sbi->ll_et);
746 rct_fini(&sbi->ll_rct);
752 list_del(&sbi->ll_conn_chain);
754 obd_fid_fini(sbi->ll_dt_exp->exp_obd);
755 obd_disconnect(sbi->ll_dt_exp);
756 sbi->ll_dt_exp = NULL;
758 lprocfs_unregister_mountpoint(sbi);
760 obd_fid_fini(sbi->ll_md_exp->exp_obd);
761 obd_disconnect(sbi->ll_md_exp);
762 sbi->ll_md_exp = NULL;
767 void ll_kill_super(struct super_block *sb)
769 struct ll_sb_info *sbi;
773 if (!(sb->s_flags & MS_ACTIVE))
777 /* we need restore s_dev from changed for clustred NFS before put_super
778 * because new kernels have cached s_dev and change sb->s_dev in
779 * put_super not affected real removing devices */
781 sb->s_dev = sbi->ll_sdev_orig;
782 sbi->ll_umounting = 1;
784 /* wait running statahead threads to quit */
785 while (atomic_read(&sbi->ll_sa_running) > 0) {
786 set_current_state(TASK_UNINTERRUPTIBLE);
787 schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
794 static inline int ll_set_opt(const char *opt, char *data, int fl)
796 if (strncmp(opt, data, strlen(opt)) != 0)
802 /* non-client-specific mount options are parsed in lmd_parse */
803 static int ll_options(char *options, int *flags)
806 char *s1 = options, *s2;
812 CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
815 CDEBUG(D_SUPER, "next opt=%s\n", s1);
816 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
821 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
826 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
831 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
836 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
841 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
846 tmp = ll_set_opt("context", s1, 1);
849 tmp = ll_set_opt("fscontext", s1, 1);
852 tmp = ll_set_opt("defcontext", s1, 1);
855 tmp = ll_set_opt("rootcontext", s1, 1);
858 tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
863 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
868 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
874 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
879 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
884 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
889 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
894 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
899 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
904 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
909 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
914 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
919 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
924 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
930 s2 = strchr(s1, ',');
938 void ll_lli_init(struct ll_inode_info *lli)
940 lli->lli_inode_magic = LLI_INODE_MAGIC;
942 spin_lock_init(&lli->lli_lock);
943 lli->lli_posix_acl = NULL;
944 lli->lli_remote_perms = NULL;
945 mutex_init(&lli->lli_rmtperm_mutex);
946 /* Do not set lli_fid, it has been initialized already. */
947 fid_zero(&lli->lli_pfid);
948 atomic_set(&lli->lli_open_count, 0);
949 lli->lli_rmtperm_time = 0;
950 lli->lli_mds_read_och = NULL;
951 lli->lli_mds_write_och = NULL;
952 lli->lli_mds_exec_och = NULL;
953 lli->lli_open_fd_read_count = 0;
954 lli->lli_open_fd_write_count = 0;
955 lli->lli_open_fd_exec_count = 0;
956 mutex_init(&lli->lli_och_mutex);
957 spin_lock_init(&lli->lli_agl_lock);
958 spin_lock_init(&lli->lli_layout_lock);
959 ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
960 lli->lli_clob = NULL;
962 init_rwsem(&lli->lli_xattrs_list_rwsem);
963 mutex_init(&lli->lli_xattrs_enq_lock);
965 LASSERT(lli->lli_vfs_inode.i_mode != 0);
966 if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
967 mutex_init(&lli->lli_readdir_mutex);
968 lli->lli_opendir_key = NULL;
970 spin_lock_init(&lli->lli_sa_lock);
971 lli->lli_opendir_pid = 0;
972 lli->lli_sa_enabled = 0;
973 lli->lli_def_stripe_offset = -1;
975 mutex_init(&lli->lli_size_mutex);
976 lli->lli_symlink_name = NULL;
977 init_rwsem(&lli->lli_trunc_sem);
978 range_lock_tree_init(&lli->lli_write_tree);
979 init_rwsem(&lli->lli_glimpse_sem);
980 lli->lli_glimpse_time = 0;
981 INIT_LIST_HEAD(&lli->lli_agl_list);
982 lli->lli_agl_index = 0;
983 lli->lli_async_rc = 0;
985 mutex_init(&lli->lli_layout_mutex);
988 static inline int ll_bdi_register(struct backing_dev_info *bdi)
990 static atomic_t ll_bdi_num = ATOMIC_INIT(0);
992 bdi->name = "lustre";
993 return bdi_register(bdi, NULL, "lustre-%d",
994 atomic_inc_return(&ll_bdi_num));
997 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
999 struct lustre_profile *lprof = NULL;
1000 struct lustre_sb_info *lsi = s2lsi(sb);
1001 struct ll_sb_info *sbi;
1002 char *dt = NULL, *md = NULL;
1003 char *profilenm = get_profile_name(sb);
1004 struct config_llog_instance *cfg;
1005 /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
1006 const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
1010 CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
1016 try_module_get(THIS_MODULE);
1018 /* client additional sb info */
1019 lsi->lsi_llsbi = sbi = ll_init_sbi();
1021 module_put(THIS_MODULE);
1026 err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1028 GOTO(out_free, err);
1030 err = bdi_init(&lsi->lsi_bdi);
1032 GOTO(out_free, err);
1033 lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1034 #ifdef HAVE_BDI_CAP_MAP_COPY
1035 lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1037 lsi->lsi_bdi.capabilities = 0;
1039 err = ll_bdi_register(&lsi->lsi_bdi);
1041 GOTO(out_free, err);
1043 sb->s_bdi = &lsi->lsi_bdi;
1044 #ifndef HAVE_DCACHE_LOCK
1045 /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1046 sb->s_d_op = &ll_d_ops;
1049 /* Generate a string unique to this super, in case some joker tries
1050 to mount the same fs at two mount points.
1051 Use the address of the super itself.*/
1052 cfg->cfg_instance = sb;
1053 cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1054 cfg->cfg_callback = class_config_llog_handler;
1055 /* set up client obds */
1056 err = lustre_process_log(sb, profilenm, cfg);
1058 GOTO(out_free, err);
1060 /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1061 lprof = class_get_profile(profilenm);
1062 if (lprof == NULL) {
1063 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1064 " read from the MGS. Does that filesystem "
1065 "exist?\n", profilenm);
1066 GOTO(out_free, err = -EINVAL);
1068 CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1069 lprof->lp_md, lprof->lp_dt);
1071 OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1073 GOTO(out_free, err = -ENOMEM);
1074 sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1076 OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1078 GOTO(out_free, err = -ENOMEM);
1079 sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1081 /* connections, registrations, sb setup */
1082 err = client_common_fill_super(sb, md, dt, mnt);
1084 GOTO(out_free, err);
1086 sbi->ll_client_common_fill_super_succeeded = 1;
1090 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1092 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1094 class_put_profile(lprof);
1097 else if (sbi->ll_flags & LL_SBI_VERBOSE)
1098 LCONSOLE_WARN("Mounted %s\n", profilenm);
1102 } /* ll_fill_super */
1104 void ll_put_super(struct super_block *sb)
1106 struct config_llog_instance cfg, params_cfg;
1107 struct obd_device *obd;
1108 struct lustre_sb_info *lsi = s2lsi(sb);
1109 struct ll_sb_info *sbi = ll_s2sbi(sb);
1110 char *profilenm = get_profile_name(sb);
1112 int next, force = 1, rc = 0;
1115 CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1117 cfg.cfg_instance = sb;
1118 lustre_end_log(sb, profilenm, &cfg);
1120 params_cfg.cfg_instance = sb;
1121 lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
1123 if (sbi->ll_md_exp) {
1124 obd = class_exp2obd(sbi->ll_md_exp);
1126 force = obd->obd_force;
1129 /* Wait for unstable pages to be committed to stable storage */
1131 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1132 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1133 atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1137 ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1138 if (force == 0 && rc != -EINTR)
1139 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1142 /* We need to set force before the lov_disconnect in
1143 lustre_common_put_super, since l_d cleans up osc's as well. */
1146 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1148 obd->obd_force = force;
1152 if (sbi->ll_client_common_fill_super_succeeded) {
1153 /* Only if client_common_fill_super succeeded */
1154 client_common_put_super(sb);
1158 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1159 class_manual_cleanup(obd);
1162 if (sbi->ll_flags & LL_SBI_VERBOSE)
1163 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1166 class_del_profile(profilenm);
1168 if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1169 bdi_destroy(&lsi->lsi_bdi);
1170 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1174 lsi->lsi_llsbi = NULL;
1176 lustre_common_put_super(sb);
1178 cl_env_cache_purge(~0);
1180 module_put(THIS_MODULE);
1183 } /* client_put_super */
1185 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1187 struct inode *inode = NULL;
1189 /* NOTE: we depend on atomic igrab() -bzzz */
1190 lock_res_and_lock(lock);
1191 if (lock->l_resource->lr_lvb_inode) {
1192 struct ll_inode_info * lli;
1193 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1194 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1195 inode = igrab(lock->l_resource->lr_lvb_inode);
1197 inode = lock->l_resource->lr_lvb_inode;
1198 LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
1199 D_WARNING, lock, "lr_lvb_inode %p is "
1200 "bogus: magic %08x",
1201 lock->l_resource->lr_lvb_inode,
1202 lli->lli_inode_magic);
1206 unlock_res_and_lock(lock);
1210 void ll_dir_clear_lsm_md(struct inode *inode)
1212 struct ll_inode_info *lli = ll_i2info(inode);
1214 LASSERT(S_ISDIR(inode->i_mode));
1216 if (lli->lli_lsm_md != NULL) {
1217 lmv_free_memmd(lli->lli_lsm_md);
1218 lli->lli_lsm_md = NULL;
1222 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1223 const struct lu_fid *fid,
1224 struct lustre_md *md)
1226 struct ll_sb_info *sbi = ll_s2sbi(sb);
1227 struct mdt_body *body = md->body;
1228 struct inode *inode;
1232 ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1233 inode = iget_locked(sb, ino);
1234 if (inode == NULL) {
1235 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1236 ll_get_fsname(sb, NULL, 0), PFID(fid));
1237 RETURN(ERR_PTR(-ENOENT));
1240 if (inode->i_state & I_NEW) {
1241 struct ll_inode_info *lli = ll_i2info(inode);
1242 struct lmv_stripe_md *lsm = md->lmv;
1244 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1245 (body->mbo_mode & S_IFMT);
1246 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1249 LTIME_S(inode->i_mtime) = 0;
1250 LTIME_S(inode->i_atime) = 0;
1251 LTIME_S(inode->i_ctime) = 0;
1254 #ifdef HAVE_BACKING_DEV_INFO
1255 /* initializing backing dev info. */
1256 inode->i_mapping->backing_dev_info =
1257 &s2lsi(inode->i_sb)->lsi_bdi;
1259 inode->i_op = &ll_dir_inode_operations;
1260 inode->i_fop = &ll_dir_operations;
1261 lli->lli_fid = *fid;
1264 LASSERT(lsm != NULL);
1265 /* master object FID */
1266 lli->lli_pfid = body->mbo_fid1;
1267 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1268 lli, PFID(fid), PFID(&lli->lli_pfid));
1269 unlock_new_inode(inode);
1275 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1278 struct lmv_stripe_md *lsm = md->lmv;
1281 LASSERT(lsm != NULL);
1282 /* XXX sigh, this lsm_root initialization should be in
1283 * LMV layer, but it needs ll_iget right now, so we
1284 * put this here right now. */
1285 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1286 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1287 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1288 /* Unfortunately ll_iget will call ll_update_inode,
1289 * where the initialization of slave inode is slightly
1290 * different, so it reset lsm_md to NULL to avoid
1291 * initializing lsm for slave inode. */
1292 /* For migrating inode, master stripe and master object will
1293 * be same, so we only need assign this inode */
1294 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1295 lsm->lsm_md_oinfo[i].lmo_root = inode;
1297 lsm->lsm_md_oinfo[i].lmo_root =
1298 ll_iget_anon_dir(inode->i_sb, fid, md);
1300 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1301 int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1303 lsm->lsm_md_oinfo[i].lmo_root = NULL;
1311 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1312 const struct lmv_stripe_md *lsm_md2)
1314 return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1315 lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1316 lsm_md1->lsm_md_master_mdt_index ==
1317 lsm_md2->lsm_md_master_mdt_index &&
1318 lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1319 lsm_md1->lsm_md_layout_version ==
1320 lsm_md2->lsm_md_layout_version &&
1321 strcmp(lsm_md1->lsm_md_pool_name,
1322 lsm_md2->lsm_md_pool_name) == 0;
1325 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1327 struct ll_inode_info *lli = ll_i2info(inode);
1328 struct lmv_stripe_md *lsm = md->lmv;
1332 LASSERT(S_ISDIR(inode->i_mode));
1333 CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1334 PFID(ll_inode2fid(inode)));
1336 /* no striped information from request. */
1338 if (lli->lli_lsm_md == NULL) {
1340 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1341 LMV_HASH_FLAG_MIGRATION) {
1342 /* migration is done, the temporay MIGRATE layout has
1344 CDEBUG(D_INODE, DFID" finish migration.\n",
1345 PFID(ll_inode2fid(inode)));
1346 lmv_free_memmd(lli->lli_lsm_md);
1347 lli->lli_lsm_md = NULL;
1350 /* The lustre_md from req does not include stripeEA,
1351 * see ll_md_setattr */
1356 /* set the directory layout */
1357 if (lli->lli_lsm_md == NULL) {
1358 struct cl_attr *attr;
1360 rc = ll_init_lsm_md(inode, md);
1364 /* set md->lmv to NULL, so the following free lustre_md
1365 * will not free this lsm */
1367 lli->lli_lsm_md = lsm;
1369 OBD_ALLOC_PTR(attr);
1373 /* validate the lsm */
1374 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1375 ll_md_blocking_ast);
1381 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1382 md->body->mbo_nlink = attr->cat_nlink;
1383 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1384 md->body->mbo_size = attr->cat_size;
1385 if (md->body->mbo_valid & OBD_MD_FLATIME)
1386 md->body->mbo_atime = attr->cat_atime;
1387 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1388 md->body->mbo_ctime = attr->cat_ctime;
1389 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1390 md->body->mbo_mtime = attr->cat_mtime;
1394 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1395 lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1399 /* Compare the old and new stripe information */
1400 if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1401 struct lmv_stripe_md *old_lsm = lli->lli_lsm_md;
1404 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1405 "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1406 "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1407 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1408 inode, lsm, old_lsm,
1409 lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1410 lsm->lsm_md_stripe_count,
1411 old_lsm->lsm_md_stripe_count,
1412 lsm->lsm_md_master_mdt_index,
1413 old_lsm->lsm_md_master_mdt_index,
1414 lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1415 lsm->lsm_md_layout_version,
1416 old_lsm->lsm_md_layout_version,
1417 lsm->lsm_md_pool_name,
1418 old_lsm->lsm_md_pool_name);
1420 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1421 CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1422 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1423 PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1426 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1427 CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1428 ll_get_fsname(inode->i_sb, NULL, 0), idx,
1429 PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1438 void ll_clear_inode(struct inode *inode)
1440 struct ll_inode_info *lli = ll_i2info(inode);
1441 struct ll_sb_info *sbi = ll_i2sbi(inode);
1444 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1445 PFID(ll_inode2fid(inode)), inode);
1447 if (S_ISDIR(inode->i_mode)) {
1448 /* these should have been cleared in ll_file_release */
1449 LASSERT(lli->lli_opendir_key == NULL);
1450 LASSERT(lli->lli_sai == NULL);
1451 LASSERT(lli->lli_opendir_pid == 0);
1454 md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1456 LASSERT(!lli->lli_open_fd_write_count);
1457 LASSERT(!lli->lli_open_fd_read_count);
1458 LASSERT(!lli->lli_open_fd_exec_count);
1460 if (lli->lli_mds_write_och)
1461 ll_md_real_close(inode, FMODE_WRITE);
1462 if (lli->lli_mds_exec_och)
1463 ll_md_real_close(inode, FMODE_EXEC);
1464 if (lli->lli_mds_read_och)
1465 ll_md_real_close(inode, FMODE_READ);
1467 if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1468 OBD_FREE(lli->lli_symlink_name,
1469 strlen(lli->lli_symlink_name) + 1);
1470 lli->lli_symlink_name = NULL;
1473 ll_xattr_cache_destroy(inode);
1475 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1476 LASSERT(lli->lli_posix_acl == NULL);
1477 if (lli->lli_remote_perms) {
1478 free_rmtperm_hash(lli->lli_remote_perms);
1479 lli->lli_remote_perms = NULL;
1482 #ifdef CONFIG_FS_POSIX_ACL
1483 else if (lli->lli_posix_acl) {
1484 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1485 LASSERT(lli->lli_remote_perms == NULL);
1486 posix_acl_release(lli->lli_posix_acl);
1487 lli->lli_posix_acl = NULL;
1490 lli->lli_inode_magic = LLI_INODE_DEAD;
1492 if (S_ISDIR(inode->i_mode))
1493 ll_dir_clear_lsm_md(inode);
1494 else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1495 LASSERT(list_empty(&lli->lli_agl_list));
1498 * XXX This has to be done before lsm is freed below, because
1499 * cl_object still uses inode lsm.
1501 cl_inode_fini(inode);
1506 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1508 struct lustre_md md;
1509 struct inode *inode = dentry->d_inode;
1510 struct ll_sb_info *sbi = ll_i2sbi(inode);
1511 struct ptlrpc_request *request = NULL;
1515 op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1516 LUSTRE_OPC_ANY, NULL);
1517 if (IS_ERR(op_data))
1518 RETURN(PTR_ERR(op_data));
1520 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1522 ptlrpc_req_finished(request);
1523 if (rc == -ENOENT) {
1525 /* Unlinked special device node? Or just a race?
1526 * Pretend we done everything. */
1527 if (!S_ISREG(inode->i_mode) &&
1528 !S_ISDIR(inode->i_mode)) {
1529 ia_valid = op_data->op_attr.ia_valid;
1530 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1531 rc = simple_setattr(dentry, &op_data->op_attr);
1532 op_data->op_attr.ia_valid = ia_valid;
1534 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1535 CERROR("md_setattr fails: rc = %d\n", rc);
1540 rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1541 sbi->ll_md_exp, &md);
1543 ptlrpc_req_finished(request);
1547 ia_valid = op_data->op_attr.ia_valid;
1548 /* inode size will be in ll_setattr_ost, can't do it now since dirty
1549 * cache is not cleared yet. */
1550 op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1551 if (S_ISREG(inode->i_mode))
1552 mutex_lock(&inode->i_mutex);
1553 rc = simple_setattr(dentry, &op_data->op_attr);
1554 if (S_ISREG(inode->i_mode))
1555 mutex_unlock(&inode->i_mutex);
1556 op_data->op_attr.ia_valid = ia_valid;
1558 rc = ll_update_inode(inode, &md);
1559 ptlrpc_req_finished(request);
1564 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1565 * object(s) determine the file size and mtime. Otherwise, the MDS will
1566 * keep these values until such a time that objects are allocated for it.
1567 * We do the MDS operations first, as it is checking permissions for us.
1568 * We don't to the MDS RPC if there is nothing that we want to store there,
1569 * otherwise there is no harm in updating mtime/atime on the MDS if we are
1570 * going to do an RPC anyways.
1572 * If we are doing a truncate, we will send the mtime and ctime updates
1573 * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1574 * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1577 * In case of HSMimport, we only set attr on MDS.
1579 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1581 struct inode *inode = dentry->d_inode;
1582 struct ll_inode_info *lli = ll_i2info(inode);
1583 struct md_op_data *op_data = NULL;
1587 CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1588 "valid %x, hsm_import %d\n",
1589 ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1590 inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1593 if (attr->ia_valid & ATTR_SIZE) {
1594 /* Check new size against VFS/VM file size limit and rlimit */
1595 rc = inode_newsize_ok(inode, attr->ia_size);
1599 /* The maximum Lustre file size is variable, based on the
1600 * OST maximum object size and number of stripes. This
1601 * needs another check in addition to the VFS check above. */
1602 if (attr->ia_size > ll_file_maxbytes(inode)) {
1603 CDEBUG(D_INODE,"file "DFID" too large %llu > "LPU64"\n",
1604 PFID(&lli->lli_fid), attr->ia_size,
1605 ll_file_maxbytes(inode));
1609 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1612 /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1613 if (attr->ia_valid & TIMES_SET_FLAGS) {
1614 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1615 !cfs_capable(CFS_CAP_FOWNER))
1619 /* We mark all of the fields "set" so MDS/OST does not re-set them */
1620 if (!(attr->ia_valid & ATTR_CTIME_SET) &&
1621 (attr->ia_valid & ATTR_CTIME)) {
1622 attr->ia_ctime = CFS_CURRENT_TIME;
1623 attr->ia_valid |= ATTR_CTIME_SET;
1625 if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1626 (attr->ia_valid & ATTR_ATIME)) {
1627 attr->ia_atime = CFS_CURRENT_TIME;
1628 attr->ia_valid |= ATTR_ATIME_SET;
1630 if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1631 (attr->ia_valid & ATTR_MTIME)) {
1632 attr->ia_mtime = CFS_CURRENT_TIME;
1633 attr->ia_valid |= ATTR_MTIME_SET;
1636 if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1637 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1638 LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1639 cfs_time_current_sec());
1641 if (S_ISREG(inode->i_mode)) {
1642 if (attr->ia_valid & ATTR_SIZE)
1643 inode_dio_write_done(inode);
1644 mutex_unlock(&inode->i_mutex);
1647 /* We always do an MDS RPC, even if we're only changing the size;
1648 * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1650 OBD_ALLOC_PTR(op_data);
1651 if (op_data == NULL)
1652 GOTO(out, rc = -ENOMEM);
1654 if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1655 /* If we are changing file size, file content is
1656 * modified, flag it. */
1657 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1658 op_data->op_bias |= MDS_DATA_MODIFIED;
1659 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1662 op_data->op_attr = *attr;
1664 rc = ll_md_setattr(dentry, op_data);
1668 if (!S_ISREG(inode->i_mode) || hsm_import)
1671 if (attr->ia_valid & (ATTR_SIZE |
1672 ATTR_ATIME | ATTR_ATIME_SET |
1673 ATTR_MTIME | ATTR_MTIME_SET |
1674 ATTR_CTIME | ATTR_CTIME_SET)) {
1675 /* For truncate and utimes sending attributes to OSTs, setting
1676 * mtime/atime to the past will be performed under PW [0:EOF]
1677 * extent lock (new_size:EOF for truncate). It may seem
1678 * excessive to send mtime/atime updates to OSTs when not
1679 * setting times to past, but it is necessary due to possible
1680 * time de-synchronization between MDT inode and OST objects */
1681 rc = cl_setattr_ost(lli->lli_clob, attr, 0);
1684 /* If the file was restored, it needs to set dirty flag.
1686 * We've already sent MDS_DATA_MODIFIED flag in
1687 * ll_md_setattr() for truncate. However, the MDT refuses to
1688 * set the HS_DIRTY flag on released files, so we have to set
1689 * it again if the file has been restored. Please check how
1690 * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1692 * Please notice that if the file is not released, the previous
1693 * MDS_DATA_MODIFIED has taken effect and usually
1694 * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1695 * This way we can save an RPC for common open + trunc
1697 if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1698 struct hsm_state_set hss = {
1699 .hss_valid = HSS_SETMASK,
1700 .hss_setmask = HS_DIRTY,
1704 rc2 = ll_hsm_state_set(inode, &hss);
1705 /* truncate and write can happen at the same time, so that
1706 * the file can be set modified even though the file is not
1707 * restored from released state, and ll_hsm_state_set() is
1708 * not applicable for the file, and rc2 < 0 is normal in this
1711 CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1712 PFID(ll_inode2fid(inode)), rc2);
1717 if (op_data != NULL)
1718 ll_finish_md_op_data(op_data);
1720 if (S_ISREG(inode->i_mode)) {
1721 mutex_lock(&inode->i_mutex);
1722 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1723 inode_dio_wait(inode);
1726 ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1727 LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1732 int ll_setattr(struct dentry *de, struct iattr *attr)
1734 int mode = de->d_inode->i_mode;
1736 if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1737 (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1738 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1740 if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1741 (ATTR_SIZE|ATTR_MODE)) &&
1742 (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1743 (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1744 !(attr->ia_mode & S_ISGID))))
1745 attr->ia_valid |= ATTR_FORCE;
1747 if ((attr->ia_valid & ATTR_MODE) &&
1749 !(attr->ia_mode & S_ISUID) &&
1750 !(attr->ia_valid & ATTR_KILL_SUID))
1751 attr->ia_valid |= ATTR_KILL_SUID;
1753 if ((attr->ia_valid & ATTR_MODE) &&
1754 ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1755 !(attr->ia_mode & S_ISGID) &&
1756 !(attr->ia_valid & ATTR_KILL_SGID))
1757 attr->ia_valid |= ATTR_KILL_SGID;
1759 return ll_setattr_raw(de, attr, false);
1762 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1763 __u64 max_age, __u32 flags)
1765 struct ll_sb_info *sbi = ll_s2sbi(sb);
1766 struct obd_statfs obd_osfs;
1770 rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1772 CERROR("md_statfs fails: rc = %d\n", rc);
1776 osfs->os_type = sb->s_magic;
1778 CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1779 osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1781 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1782 flags |= OBD_STATFS_NODELAY;
1784 rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1786 CERROR("obd_statfs fails: rc = %d\n", rc);
1790 CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
1791 obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1794 osfs->os_bsize = obd_osfs.os_bsize;
1795 osfs->os_blocks = obd_osfs.os_blocks;
1796 osfs->os_bfree = obd_osfs.os_bfree;
1797 osfs->os_bavail = obd_osfs.os_bavail;
1799 /* If we don't have as many objects free on the OST as inodes
1800 * on the MDS, we reduce the total number of inodes to
1801 * compensate, so that the "inodes in use" number is correct.
1803 if (obd_osfs.os_ffree < osfs->os_ffree) {
1804 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1806 osfs->os_ffree = obd_osfs.os_ffree;
1811 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1813 struct super_block *sb = de->d_sb;
1814 struct obd_statfs osfs;
1815 __u64 fsid = huge_encode_dev(sb->s_dev);
1818 CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
1819 ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1821 /* Some amount of caching on the client is allowed */
1822 rc = ll_statfs_internal(sb, &osfs,
1823 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1828 statfs_unpack(sfs, &osfs);
1830 /* We need to downshift for all 32-bit kernels, because we can't
1831 * tell if the kernel is being called via sys_statfs64() or not.
1832 * Stop before overflowing f_bsize - in which case it is better
1833 * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1834 if (sizeof(long) < 8) {
1835 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1838 osfs.os_blocks >>= 1;
1839 osfs.os_bfree >>= 1;
1840 osfs.os_bavail >>= 1;
1844 sfs->f_blocks = osfs.os_blocks;
1845 sfs->f_bfree = osfs.os_bfree;
1846 sfs->f_bavail = osfs.os_bavail;
1847 sfs->f_fsid.val[0] = (__u32)fsid;
1848 sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1852 void ll_inode_size_lock(struct inode *inode)
1854 struct ll_inode_info *lli;
1856 LASSERT(!S_ISDIR(inode->i_mode));
1858 lli = ll_i2info(inode);
1859 mutex_lock(&lli->lli_size_mutex);
1862 void ll_inode_size_unlock(struct inode *inode)
1864 struct ll_inode_info *lli;
1866 lli = ll_i2info(inode);
1867 mutex_unlock(&lli->lli_size_mutex);
1870 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1872 struct ll_inode_info *lli = ll_i2info(inode);
1873 struct mdt_body *body = md->body;
1874 struct ll_sb_info *sbi = ll_i2sbi(inode);
1876 if (body->mbo_valid & OBD_MD_FLEASIZE)
1877 cl_file_inode_init(inode, md);
1879 if (S_ISDIR(inode->i_mode)) {
1882 rc = ll_update_lsm_md(inode, md);
1887 if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
1888 if (body->mbo_valid & OBD_MD_FLRMTPERM)
1889 ll_update_remote_perm(inode, md->remote_perm);
1891 #ifdef CONFIG_FS_POSIX_ACL
1892 else if (body->mbo_valid & OBD_MD_FLACL) {
1893 spin_lock(&lli->lli_lock);
1894 if (lli->lli_posix_acl)
1895 posix_acl_release(lli->lli_posix_acl);
1896 lli->lli_posix_acl = md->posix_acl;
1897 spin_unlock(&lli->lli_lock);
1900 inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1901 sbi->ll_flags & LL_SBI_32BIT_API);
1902 inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1904 if (body->mbo_valid & OBD_MD_FLATIME) {
1905 if (body->mbo_atime > LTIME_S(inode->i_atime))
1906 LTIME_S(inode->i_atime) = body->mbo_atime;
1907 lli->lli_atime = body->mbo_atime;
1910 if (body->mbo_valid & OBD_MD_FLMTIME) {
1911 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1912 CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1913 "to "LPU64"\n", inode->i_ino,
1914 LTIME_S(inode->i_mtime), body->mbo_mtime);
1915 LTIME_S(inode->i_mtime) = body->mbo_mtime;
1917 lli->lli_mtime = body->mbo_mtime;
1920 if (body->mbo_valid & OBD_MD_FLCTIME) {
1921 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1922 LTIME_S(inode->i_ctime) = body->mbo_ctime;
1923 lli->lli_ctime = body->mbo_ctime;
1926 if (body->mbo_valid & OBD_MD_FLMODE)
1927 inode->i_mode = (inode->i_mode & S_IFMT) |
1928 (body->mbo_mode & ~S_IFMT);
1930 if (body->mbo_valid & OBD_MD_FLTYPE)
1931 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1932 (body->mbo_mode & S_IFMT);
1934 LASSERT(inode->i_mode != 0);
1935 if (S_ISREG(inode->i_mode))
1936 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
1937 LL_MAX_BLKSIZE_BITS);
1939 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1941 if (body->mbo_valid & OBD_MD_FLUID)
1942 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
1943 if (body->mbo_valid & OBD_MD_FLGID)
1944 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
1945 if (body->mbo_valid & OBD_MD_FLFLAGS)
1946 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
1947 if (body->mbo_valid & OBD_MD_FLNLINK)
1948 set_nlink(inode, body->mbo_nlink);
1949 if (body->mbo_valid & OBD_MD_FLRDEV)
1950 inode->i_rdev = old_decode_dev(body->mbo_rdev);
1952 if (body->mbo_valid & OBD_MD_FLID) {
1953 /* FID shouldn't be changed! */
1954 if (fid_is_sane(&lli->lli_fid)) {
1955 LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
1956 "Trying to change FID "DFID
1957 " to the "DFID", inode "DFID"(%p)\n",
1958 PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
1959 PFID(ll_inode2fid(inode)), inode);
1961 lli->lli_fid = body->mbo_fid1;
1965 LASSERT(fid_seq(&lli->lli_fid) != 0);
1967 if (body->mbo_valid & OBD_MD_FLSIZE) {
1968 i_size_write(inode, body->mbo_size);
1970 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
1971 PFID(ll_inode2fid(inode)),
1972 (unsigned long long)body->mbo_size);
1974 if (body->mbo_valid & OBD_MD_FLBLOCKS)
1975 inode->i_blocks = body->mbo_blocks;
1978 if (body->mbo_valid & OBD_MD_TSTATE) {
1979 /* Set LLIF_FILE_RESTORING if restore ongoing and
1980 * clear it when done to ensure to start again
1981 * glimpsing updated attrs
1983 if (body->mbo_t_state & MS_RESTORE)
1984 ll_file_set_flag(lli, LLIF_FILE_RESTORING);
1986 ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
1992 int ll_read_inode2(struct inode *inode, void *opaque)
1994 struct lustre_md *md = opaque;
1995 struct ll_inode_info *lli = ll_i2info(inode);
1999 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
2000 PFID(&lli->lli_fid), inode);
2002 /* Core attributes from the MDS first. This is a new inode, and
2003 * the VFS doesn't zero times in the core inode so we have to do
2004 * it ourselves. They will be overwritten by either MDS or OST
2005 * attributes - we just need to make sure they aren't newer. */
2006 LTIME_S(inode->i_mtime) = 0;
2007 LTIME_S(inode->i_atime) = 0;
2008 LTIME_S(inode->i_ctime) = 0;
2010 rc = ll_update_inode(inode, md);
2014 /* OIDEBUG(inode); */
2016 #ifdef HAVE_BACKING_DEV_INFO
2017 /* initializing backing dev info. */
2018 inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
2020 if (S_ISREG(inode->i_mode)) {
2021 struct ll_sb_info *sbi = ll_i2sbi(inode);
2022 inode->i_op = &ll_file_inode_operations;
2023 inode->i_fop = sbi->ll_fop;
2024 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
2026 } else if (S_ISDIR(inode->i_mode)) {
2027 inode->i_op = &ll_dir_inode_operations;
2028 inode->i_fop = &ll_dir_operations;
2030 } else if (S_ISLNK(inode->i_mode)) {
2031 inode->i_op = &ll_fast_symlink_inode_operations;
2034 inode->i_op = &ll_special_inode_operations;
2036 init_special_inode(inode, inode->i_mode,
2045 void ll_delete_inode(struct inode *inode)
2047 struct ll_inode_info *lli = ll_i2info(inode);
2050 if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2051 /* It is last chance to write out dirty pages,
2052 * otherwise we may lose data while umount */
2053 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2055 truncate_inode_pages_final(&inode->i_data);
2057 LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2058 "see https://jira.hpdd.intel.com/browse/LU-118\n",
2059 PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2061 #ifdef HAVE_SBOPS_EVICT_INODE
2062 ll_clear_inode(inode);
2069 int ll_iocontrol(struct inode *inode, struct file *file,
2070 unsigned int cmd, unsigned long arg)
2072 struct ll_sb_info *sbi = ll_i2sbi(inode);
2073 struct ptlrpc_request *req = NULL;
2078 case FSFILT_IOC_GETFLAGS: {
2079 struct mdt_body *body;
2080 struct md_op_data *op_data;
2082 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2083 0, 0, LUSTRE_OPC_ANY,
2085 if (IS_ERR(op_data))
2086 RETURN(PTR_ERR(op_data));
2088 op_data->op_valid = OBD_MD_FLFLAGS;
2089 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2090 ll_finish_md_op_data(op_data);
2092 CERROR("%s: failure inode "DFID": rc = %d\n",
2093 sbi->ll_md_exp->exp_obd->obd_name,
2094 PFID(ll_inode2fid(inode)), rc);
2098 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2100 flags = body->mbo_flags;
2102 ptlrpc_req_finished(req);
2104 RETURN(put_user(flags, (int __user *)arg));
2106 case FSFILT_IOC_SETFLAGS: {
2108 struct md_op_data *op_data;
2109 struct cl_object *obj;
2111 if (get_user(flags, (int __user *)arg))
2114 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2115 LUSTRE_OPC_ANY, NULL);
2116 if (IS_ERR(op_data))
2117 RETURN(PTR_ERR(op_data));
2119 op_data->op_attr_flags = flags;
2120 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2121 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2122 ll_finish_md_op_data(op_data);
2123 ptlrpc_req_finished(req);
2127 inode->i_flags = ll_ext_to_inode_flags(flags);
2129 obj = ll_i2info(inode)->lli_clob;
2133 OBD_ALLOC_PTR(attr);
2137 attr->ia_valid = ATTR_ATTR_FLAG;
2138 rc = cl_setattr_ost(obj, attr, flags);
2150 int ll_flush_ctx(struct inode *inode)
2152 struct ll_sb_info *sbi = ll_i2sbi(inode);
2154 CDEBUG(D_SEC, "flush context for user %d\n",
2155 from_kuid(&init_user_ns, current_uid()));
2157 obd_set_info_async(NULL, sbi->ll_md_exp,
2158 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2160 obd_set_info_async(NULL, sbi->ll_dt_exp,
2161 sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2166 /* umount -f client means force down, don't save state */
2167 void ll_umount_begin(struct super_block *sb)
2169 struct ll_sb_info *sbi = ll_s2sbi(sb);
2170 struct obd_device *obd;
2171 struct obd_ioctl_data *ioc_data;
2174 CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2175 sb->s_count, atomic_read(&sb->s_active));
2177 obd = class_exp2obd(sbi->ll_md_exp);
2179 CERROR("Invalid MDC connection handle "LPX64"\n",
2180 sbi->ll_md_exp->exp_handle.h_cookie);
2186 obd = class_exp2obd(sbi->ll_dt_exp);
2188 CERROR("Invalid LOV connection handle "LPX64"\n",
2189 sbi->ll_dt_exp->exp_handle.h_cookie);
2195 OBD_ALLOC_PTR(ioc_data);
2197 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2198 sizeof *ioc_data, ioc_data, NULL);
2200 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2201 sizeof *ioc_data, ioc_data, NULL);
2203 OBD_FREE_PTR(ioc_data);
2206 /* Really, we'd like to wait until there are no requests outstanding,
2207 * and then continue. For now, we just invalidate the requests,
2208 * schedule() and sleep one second if needed, and hope.
2214 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2216 struct ll_sb_info *sbi = ll_s2sbi(sb);
2217 char *profilenm = get_profile_name(sb);
2221 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2222 read_only = *flags & MS_RDONLY;
2223 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2224 sizeof(KEY_READ_ONLY),
2225 KEY_READ_ONLY, sizeof(read_only),
2228 LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2229 profilenm, read_only ?
2230 "read-only" : "read-write", err);
2235 sb->s_flags |= MS_RDONLY;
2237 sb->s_flags &= ~MS_RDONLY;
2239 if (sbi->ll_flags & LL_SBI_VERBOSE)
2240 LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2241 read_only ? "read-only" : "read-write");
2247 * Cleanup the open handle that is cached on MDT-side.
2249 * For open case, the client side open handling thread may hit error
2250 * after the MDT grant the open. Under such case, the client should
2251 * send close RPC to the MDT as cleanup; otherwise, the open handle
2252 * on the MDT will be leaked there until the client umount or evicted.
2254 * In further, if someone unlinked the file, because the open handle
2255 * holds the reference on such file/object, then it will block the
2256 * subsequent threads that want to locate such object via FID.
2258 * \param[in] sb super block for this file-system
2259 * \param[in] open_req pointer to the original open request
2261 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2263 struct mdt_body *body;
2264 struct md_op_data *op_data;
2265 struct ptlrpc_request *close_req = NULL;
2266 struct obd_export *exp = ll_s2sbi(sb)->ll_md_exp;
2269 body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2270 OBD_ALLOC_PTR(op_data);
2271 if (op_data == NULL) {
2272 CWARN("%s: cannot allocate op_data to release open handle for "
2274 ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2279 op_data->op_fid1 = body->mbo_fid1;
2280 op_data->op_handle = body->mbo_handle;
2281 op_data->op_mod_time = cfs_time_current_sec();
2282 md_close(exp, op_data, NULL, &close_req);
2283 ptlrpc_req_finished(close_req);
2284 ll_finish_md_op_data(op_data);
2289 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2290 struct super_block *sb, struct lookup_intent *it)
2292 struct ll_sb_info *sbi = NULL;
2293 struct lustre_md md = { NULL };
2297 LASSERT(*inode || sb);
2298 sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2299 rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2300 sbi->ll_md_exp, &md);
2305 rc = ll_update_inode(*inode, &md);
2309 LASSERT(sb != NULL);
2312 * At this point server returns to client's same fid as client
2313 * generated for creating. So using ->fid1 is okay here.
2315 LASSERT(fid_is_sane(&md.body->mbo_fid1));
2317 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2318 sbi->ll_flags & LL_SBI_32BIT_API),
2320 if (IS_ERR(*inode)) {
2321 #ifdef CONFIG_FS_POSIX_ACL
2323 posix_acl_release(md.posix_acl);
2324 md.posix_acl = NULL;
2327 rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2329 CERROR("new_inode -fatal: rc %d\n", rc);
2334 /* Handling piggyback layout lock.
2335 * Layout lock can be piggybacked by getattr and open request.
2336 * The lsm can be applied to inode only if it comes with a layout lock
2337 * otherwise correct layout may be overwritten, for example:
2338 * 1. proc1: mdt returns a lsm but not granting layout
2339 * 2. layout was changed by another client
2340 * 3. proc2: refresh layout and layout lock granted
2341 * 4. proc1: to apply a stale layout */
2342 if (it != NULL && it->d.lustre.it_lock_mode != 0) {
2343 struct lustre_handle lockh;
2344 struct ldlm_lock *lock;
2346 lockh.cookie = it->d.lustre.it_lock_handle;
2347 lock = ldlm_handle2lock(&lockh);
2348 LASSERT(lock != NULL);
2349 if (ldlm_has_layout(lock)) {
2350 struct cl_object_conf conf;
2352 memset(&conf, 0, sizeof(conf));
2353 conf.coc_opc = OBJECT_CONF_SET;
2354 conf.coc_inode = *inode;
2355 conf.coc_lock = lock;
2356 conf.u.coc_layout = md.layout;
2357 (void)ll_layout_conf(*inode, &conf);
2359 LDLM_LOCK_PUT(lock);
2365 md_free_lustre_md(sbi->ll_md_exp, &md);
2368 if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2369 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2374 int ll_obd_statfs(struct inode *inode, void __user *arg)
2376 struct ll_sb_info *sbi = NULL;
2377 struct obd_export *exp;
2379 struct obd_ioctl_data *data = NULL;
2383 if (!inode || !(sbi = ll_i2sbi(inode)))
2384 GOTO(out_statfs, rc = -EINVAL);
2386 rc = obd_ioctl_getdata(&buf, &len, arg);
2388 GOTO(out_statfs, rc);
2391 if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2392 !data->ioc_pbuf1 || !data->ioc_pbuf2)
2393 GOTO(out_statfs, rc = -EINVAL);
2395 if (data->ioc_inllen1 != sizeof(__u32) ||
2396 data->ioc_inllen2 != sizeof(__u32) ||
2397 data->ioc_plen1 != sizeof(struct obd_statfs) ||
2398 data->ioc_plen2 != sizeof(struct obd_uuid))
2399 GOTO(out_statfs, rc = -EINVAL);
2401 memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2402 if (type & LL_STATFS_LMV)
2403 exp = sbi->ll_md_exp;
2404 else if (type & LL_STATFS_LOV)
2405 exp = sbi->ll_dt_exp;
2407 GOTO(out_statfs, rc = -ENODEV);
2409 rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2411 GOTO(out_statfs, rc);
2414 obd_ioctl_freedata(buf, len);
2418 int ll_process_config(struct lustre_cfg *lcfg)
2420 struct super_block *sb;
2425 /* The instance name contains the sb: lustre-client-aacfe000 */
2426 ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2427 if (!ptr || !*(++ptr))
2429 if (sscanf(ptr, "%lx", &x) != 1)
2431 sb = (struct super_block *)x;
2432 /* This better be a real Lustre superblock! */
2433 LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2435 /* Note we have not called client_common_fill_super yet, so
2436 proc fns must be able to handle that! */
2437 rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2444 /* this function prepares md_op_data hint for passing it down to MD stack. */
2445 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2446 struct inode *i1, struct inode *i2,
2447 const char *name, size_t namelen,
2448 __u32 mode, __u32 opc, void *data)
2450 LASSERT(i1 != NULL);
2453 /* Do not reuse namelen for something else. */
2455 return ERR_PTR(-EINVAL);
2457 if (namelen > ll_i2sbi(i1)->ll_namelen)
2458 return ERR_PTR(-ENAMETOOLONG);
2460 if (!lu_name_is_valid_2(name, namelen))
2461 return ERR_PTR(-EINVAL);
2464 if (op_data == NULL)
2465 OBD_ALLOC_PTR(op_data);
2467 if (op_data == NULL)
2468 return ERR_PTR(-ENOMEM);
2470 ll_i2gids(op_data->op_suppgids, i1, i2);
2471 op_data->op_fid1 = *ll_inode2fid(i1);
2472 op_data->op_default_stripe_offset = -1;
2473 if (S_ISDIR(i1->i_mode)) {
2474 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2475 if (opc == LUSTRE_OPC_MKDIR)
2476 op_data->op_default_stripe_offset =
2477 ll_i2info(i1)->lli_def_stripe_offset;
2481 op_data->op_fid2 = *ll_inode2fid(i2);
2482 if (S_ISDIR(i2->i_mode))
2483 op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2485 fid_zero(&op_data->op_fid2);
2488 if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2489 op_data->op_cli_flags |= CLI_HASH64;
2491 if (ll_need_32bit_api(ll_i2sbi(i1)))
2492 op_data->op_cli_flags |= CLI_API32;
2494 op_data->op_name = name;
2495 op_data->op_namelen = namelen;
2496 op_data->op_mode = mode;
2497 op_data->op_mod_time = cfs_time_current_sec();
2498 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2499 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2500 op_data->op_cap = cfs_curproc_cap_pack();
2501 if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2502 filename_is_volatile(name, namelen, &op_data->op_mds)) {
2503 op_data->op_bias |= MDS_CREATE_VOLATILE;
2505 op_data->op_mds = 0;
2507 op_data->op_data = data;
2512 void ll_finish_md_op_data(struct md_op_data *op_data)
2514 OBD_FREE_PTR(op_data);
2517 #ifdef HAVE_SUPEROPS_USE_DENTRY
2518 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2520 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2523 struct ll_sb_info *sbi;
2525 #ifdef HAVE_SUPEROPS_USE_DENTRY
2526 LASSERT((seq != NULL) && (dentry != NULL));
2527 sbi = ll_s2sbi(dentry->d_sb);
2529 LASSERT((seq != NULL) && (vfs != NULL));
2530 sbi = ll_s2sbi(vfs->mnt_sb);
2533 if (sbi->ll_flags & LL_SBI_NOLCK)
2534 seq_puts(seq, ",nolock");
2536 if (sbi->ll_flags & LL_SBI_FLOCK)
2537 seq_puts(seq, ",flock");
2539 if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2540 seq_puts(seq, ",localflock");
2542 if (sbi->ll_flags & LL_SBI_USER_XATTR)
2543 seq_puts(seq, ",user_xattr");
2545 if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2546 seq_puts(seq, ",lazystatfs");
2548 if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2549 seq_puts(seq, ",user_fid2path");
2551 if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2552 seq_puts(seq, ",always_ping");
2558 * Get obd name by cmd, and copy out to user space
2560 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2562 struct ll_sb_info *sbi = ll_i2sbi(inode);
2563 struct obd_device *obd;
2566 if (cmd == OBD_IOC_GETDTNAME)
2567 obd = class_exp2obd(sbi->ll_dt_exp);
2568 else if (cmd == OBD_IOC_GETMDNAME)
2569 obd = class_exp2obd(sbi->ll_md_exp);
2576 if (copy_to_user((void __user *)arg, obd->obd_name,
2577 strlen(obd->obd_name) + 1))
2584 * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2585 * fsname will be returned in this buffer; otherwise, a static buffer will be
2586 * used to store the fsname and returned to caller.
2588 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2590 static char fsname_static[MTI_NAME_MAXLEN];
2591 struct lustre_sb_info *lsi = s2lsi(sb);
2596 /* this means the caller wants to use static buffer
2597 * and it doesn't care about race. Usually this is
2598 * in error reporting path */
2599 buf = fsname_static;
2600 buflen = sizeof(fsname_static);
2603 len = strlen(lsi->lsi_lmd->lmd_profile);
2604 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2605 if (ptr && (strcmp(ptr, "-client") == 0))
2608 if (unlikely(len >= buflen))
2610 strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2616 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2623 p.mnt = current->fs->root.mnt;
2625 path = d_path(&p, buf, bufsize);
2630 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2632 char *buf, *path = NULL;
2633 struct dentry *dentry = NULL;
2634 struct inode *inode = page->mapping->host;
2636 /* this can be called inside spin lock so use GFP_ATOMIC. */
2637 buf = (char *)__get_free_page(GFP_ATOMIC);
2639 dentry = d_find_alias(page->mapping->host);
2641 path = ll_d_path(dentry, buf, PAGE_SIZE);
2645 "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2646 "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2647 s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2648 PFID(ll_inode2fid(inode)),
2649 (path && !IS_ERR(path)) ? path : "", ioret);
2655 free_page((unsigned long)buf);
2658 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2659 struct lov_user_md **kbuf)
2661 struct lov_user_md lum;
2665 if (copy_from_user(&lum, md, sizeof(lum)))
2668 lum_size = ll_lov_user_md_size(&lum);
2672 OBD_ALLOC(*kbuf, lum_size);
2676 if (copy_from_user(*kbuf, md, lum_size) != 0) {
2677 OBD_FREE(*kbuf, lum_size);
2685 * Compute llite root squash state after a change of root squash
2686 * configuration setting or add/remove of a lnet nid
2688 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2690 struct root_squash_info *squash = &sbi->ll_squash;
2693 lnet_process_id_t id;
2695 /* Update norootsquash flag */
2696 down_write(&squash->rsi_sem);
2697 if (list_empty(&squash->rsi_nosquash_nids))
2698 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2700 /* Do not apply root squash as soon as one of our NIDs is
2701 * in the nosquash_nids list */
2704 while (LNetGetId(i++, &id) != -ENOENT) {
2705 if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2707 if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2713 sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2715 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2717 up_write(&squash->rsi_sem);
2721 * Parse linkea content to extract information about a given hardlink
2723 * \param[in] ldata - Initialized linkea data
2724 * \param[in] linkno - Link identifier
2725 * \param[out] parent_fid - The entry's parent FID
2726 * \param[out] ln - Entry name destination buffer
2728 * \retval 0 on success
2729 * \retval Appropriate negative error code on failure
2731 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2732 struct lu_fid *parent_fid, struct lu_name *ln)
2738 rc = linkea_init(ldata);
2742 if (linkno >= ldata->ld_leh->leh_reccount)
2743 /* beyond last link */
2746 linkea_first_entry(ldata);
2747 for (idx = 0; ldata->ld_lee != NULL; idx++) {
2748 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2753 linkea_next_entry(ldata);
2763 * Get parent FID and name of an identified link. Operation is performed for
2764 * a given link number, letting the caller iterate over linkno to list one or
2765 * all links of an entry.
2767 * \param[in] file - File descriptor against which to perform the operation
2768 * \param[in,out] arg - User-filled structure containing the linkno to operate
2769 * on and the available size. It is eventually filled with
2770 * the requested information or left untouched on error
2772 * \retval - 0 on success
2773 * \retval - Appropriate negative error code on failure
2775 int ll_getparent(struct file *file, struct getparent __user *arg)
2777 struct dentry *dentry = file->f_path.dentry;
2778 struct inode *inode = dentry->d_inode;
2779 struct linkea_data *ldata;
2780 struct lu_buf buf = LU_BUF_NULL;
2782 struct lu_fid parent_fid;
2789 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2790 !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2793 if (get_user(name_size, &arg->gp_name_size))
2796 if (get_user(linkno, &arg->gp_linkno))
2799 if (name_size > PATH_MAX)
2802 OBD_ALLOC(ldata, sizeof(*ldata));
2806 rc = linkea_data_new(ldata, &buf);
2808 GOTO(ldata_free, rc);
2810 rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2814 rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2818 if (ln.ln_namelen >= name_size)
2819 GOTO(lb_free, rc = -EOVERFLOW);
2821 if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2822 GOTO(lb_free, rc = -EFAULT);
2824 if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2825 GOTO(lb_free, rc = -EFAULT);
2827 if (put_user('\0', arg->gp_name + ln.ln_namelen))
2828 GOTO(lb_free, rc = -EFAULT);
2833 OBD_FREE(ldata, sizeof(*ldata));