4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Directory code for lustre client.
42 #include <linux/pagemap.h>
44 #include <linux/version.h>
45 #include <asm/uaccess.h>
46 #include <linux/buffer_head.h> // for wait_on_buffer
47 #include <linux/pagevec.h>
49 #define DEBUG_SUBSYSTEM S_LLITE
51 #include <lustre/lustre_idl.h>
52 #include <obd_support.h>
53 #include <obd_class.h>
54 #include <lustre_lib.h>
55 #include <lustre/lustre_idl.h>
56 #include <lustre_lite.h>
57 #include <lustre_dlm.h>
58 #include <lustre_fid.h>
59 #include "llite_internal.h"
62 * (new) readdir implementation overview.
64 * Original lustre readdir implementation cached exact copy of raw directory
65 * pages on the client. These pages were indexed in client page cache by
66 * logical offset in the directory file. This design, while very simple and
67 * intuitive had some inherent problems:
69 * . it implies that byte offset to the directory entry serves as a
70 * telldir(3)/seekdir(3) cookie, but that offset is not stable: in
71 * ext3/htree directory entries may move due to splits, and more
74 * . it is incompatible with the design of split directories for cmd3,
75 * that assumes that names are distributed across nodes based on their
76 * hash, and so readdir should be done in hash order.
78 * New readdir implementation does readdir in hash order, and uses hash of a
79 * file name as a telldir/seekdir cookie. This led to number of complications:
81 * . hash is not unique, so it cannot be used to index cached directory
82 * pages on the client (note, that it requires a whole pageful of hash
83 * collided entries to cause two pages to have identical hashes);
85 * . hash is not unique, so it cannot, strictly speaking, be used as an
86 * entry cookie. ext3/htree has the same problem and lustre implementation
87 * mimics their solution: seekdir(hash) positions directory at the first
88 * entry with the given hash.
94 * Client caches directory pages using hash of the first entry as an index. As
95 * noted above hash is not unique, so this solution doesn't work as is:
96 * special processing is needed for "page hash chains" (i.e., sequences of
97 * pages filled with entries all having the same hash value).
99 * First, such chains have to be detected. To this end, server returns to the
100 * client the hash of the first entry on the page next to one returned. When
101 * client detects that this hash is the same as hash of the first entry on the
102 * returned page, page hash collision has to be handled. Pages in the
103 * hash chain, except first one, are termed "overflow pages".
105 * Solution to index uniqueness problem is to not cache overflow
106 * pages. Instead, when page hash collision is detected, all overflow pages
107 * from emerging chain are immediately requested from the server and placed in
108 * a special data structure (struct ll_dir_chain). This data structure is used
109 * by ll_readdir() to process entries from overflow pages. When readdir
110 * invocation finishes, overflow pages are discarded. If page hash collision
111 * chain weren't completely processed, next call to readdir will again detect
112 * page hash collision, again read overflow pages in, process next portion of
113 * entries and again discard the pages. This is not as wasteful as it looks,
114 * because, given reasonable hash, page hash collisions are extremely rare.
116 * 1. directory positioning
118 * When seekdir(hash) is called, original
129 * identification of and access to overflow pages
133 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
134 * a header lu_dirpage which describes the start/end hash, and whether this
135 * page is empty (contains no dir entry) or hash collide with next page.
136 * After client receives reply, several pages will be integrated into dir page
137 * in PAGE_CACHE_SIZE (if PAGE_CACHE_SIZE greater than LU_PAGE_SIZE), and the
138 * lu_dirpage for this integrated page will be adjusted. See
139 * lmv_adjust_dirpages().
143 * The following three APIs will be used by llite to iterate directory
144 * entries from MDC dir page caches.
146 * ll_dir_entry_start(next) will lookup(return) entry by op_hash_offset.
147 * To avoid extra memory allocation, the @entry will be pointed to
148 * the dir entries in MDC page directly, so these pages can not be released
149 * until the entry has been accessed in ll_readdir(or statahead).
151 * The iterate process will be
153 * ll_dir_entry_start: locate the page in MDC, and return the first entry.
156 * ll_dir_entry_next: return the next entry in the current page, if it reaches
157 * to the end, release current page.
159 * ll_dir_entry_end: release the last page.
161 struct lu_dirent *ll_dir_entry_start(struct inode *dir,
162 struct md_op_data *op_data,
165 struct lu_dirent *entry;
166 struct md_callback cb_op;
169 LASSERT(*ppage == NULL);
170 cb_op.md_blocking_ast = ll_md_blocking_ast;
171 rc = md_read_entry(ll_i2mdexp(dir), op_data, &cb_op, &entry, ppage);
177 struct lu_dirent *ll_dir_entry_next(struct inode *dir,
178 struct md_op_data *op_data,
179 struct lu_dirent *ent,
182 struct lu_dirent *entry;
183 struct md_callback cb_op;
186 LASSERT(*ppage != NULL);
187 cb_op.md_blocking_ast = ll_md_blocking_ast;
188 op_data->op_hash_offset = le64_to_cpu(ent->lde_hash);
190 page_cache_release(*ppage);
192 rc = md_read_entry(ll_i2mdexp(dir), op_data, &cb_op, &entry, ppage);
198 #ifdef HAVE_DIR_CONTEXT
199 int ll_dir_read(struct inode *inode, struct md_op_data *op_data,
200 struct dir_context *ctx)
203 int ll_dir_read(struct inode *inode, struct md_op_data *op_data,
204 void *cookie, filldir_t filldir)
207 struct ll_sb_info *sbi = ll_i2sbi(inode);
208 struct ll_dir_chain chain;
209 struct lu_dirent *ent;
210 int api32 = ll_need_32bit_api(sbi);
211 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
214 __u64 hash = MDS_DIR_END_OFF;
215 __u64 last_hash = MDS_DIR_END_OFF;
216 struct page *page = NULL;
219 ll_dir_chain_init(&chain);
220 for (ent = ll_dir_entry_start(inode, op_data, &page);
221 ent != NULL && !IS_ERR(ent) && !done;
222 ent = ll_dir_entry_next(inode, op_data, ent, &page)) {
229 hash = le64_to_cpu(ent->lde_hash);
230 if (hash < op_data->op_hash_offset)
232 * Skip until we find target hash
236 namelen = le16_to_cpu(ent->lde_namelen);
247 fid_le_to_cpu(&fid, &ent->lde_fid);
248 ino = cl_fid_build_ino(&fid, api32);
249 type = ll_dirent_type_get(ent);
251 #ifdef HAVE_DIR_CONTEXT
252 /* For 'll_nfs_get_name_filldir()', it will try
253 * to access the 'ent' through its 'lde_name',
254 * so the parameter 'name' for 'filldir()' must
255 * be part of the 'ent'. */
256 done = !dir_emit(ctx, ent->lde_name, namelen, ino, type);
258 done = filldir(cookie, ent->lde_name, namelen, lhash,
262 if (op_data->op_hash_offset != MDS_DIR_END_OFF)
263 op_data->op_hash_offset = last_hash;
275 page_cache_release(page);
278 ll_dir_chain_fini(&chain);
282 #ifdef HAVE_DIR_CONTEXT
283 static int ll_iterate(struct file *filp, struct dir_context *ctx)
285 static int ll_readdir(struct file *filp, void *cookie, filldir_t filldir)
288 struct inode *inode = filp->f_dentry->d_inode;
289 struct ll_file_data *lfd = LUSTRE_FPRIVATE(filp);
290 struct ll_sb_info *sbi = ll_i2sbi(inode);
291 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
292 int api32 = ll_need_32bit_api(sbi);
293 struct md_op_data *op_data;
303 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) pos/size"
304 "%lu/%llu 32bit_api %d\n", PFID(ll_inode2fid(inode)),
305 inode, (unsigned long)pos, i_size_read(inode), api32);
307 if (pos == MDS_DIR_END_OFF)
313 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
314 LUSTRE_OPC_ANY, inode);
316 GOTO(out, rc = PTR_ERR(op_data));
318 op_data->op_hash_offset = pos;
319 op_data->op_max_pages = sbi->ll_md_brw_size >> PAGE_CACHE_SHIFT;
320 #ifdef HAVE_DIR_CONTEXT
322 rc = ll_dir_read(inode, op_data, ctx);
325 rc = ll_dir_read(inode, op_data, cookie, filldir);
328 lfd->lfd_pos = op_data->op_hash_offset;
330 if (pos == MDS_DIR_END_OFF) {
332 pos = LL_DIR_END_OFF_32BIT;
334 pos = LL_DIR_END_OFF;
337 pos = op_data->op_hash_offset >> 32;
339 pos = op_data->op_hash_offset;
341 #ifdef HAVE_DIR_CONTEXT
346 ll_finish_md_op_data(op_data);
347 filp->f_version = inode->i_version;
351 ll_stats_ops_tally(sbi, LPROC_LL_READDIR, 1);
356 int ll_send_mgc_param(struct obd_export *mgc, char *string)
358 struct mgs_send_param *msp;
365 strncpy(msp->mgs_param, string, MGS_PARAM_MAXLEN);
366 rc = obd_set_info_async(NULL, mgc, sizeof(KEY_SET_INFO), KEY_SET_INFO,
367 sizeof(struct mgs_send_param), msp, NULL);
369 CERROR("Failed to set parameter: %d\n", rc);
375 static int ll_dir_setdirstripe(struct inode *dir, struct lmv_user_md *lump,
376 const char *filename)
378 struct ptlrpc_request *request = NULL;
379 struct md_op_data *op_data;
380 struct ll_sb_info *sbi = ll_i2sbi(dir);
385 if (unlikely(lump->lum_magic != LMV_USER_MAGIC))
388 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) name %s"
389 "stripe_offset %d, stripe_count: %u\n",
390 PFID(ll_inode2fid(dir)), dir, filename,
391 (int)lump->lum_stripe_offset, lump->lum_stripe_count);
393 if (lump->lum_magic != cpu_to_le32(LMV_USER_MAGIC))
394 lustre_swab_lmv_user_md(lump);
396 mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
397 op_data = ll_prep_md_op_data(NULL, dir, NULL, filename,
398 strlen(filename), mode, LUSTRE_OPC_MKDIR,
401 GOTO(err_exit, err = PTR_ERR(op_data));
403 op_data->op_cli_flags |= CLI_SET_MEA;
404 err = md_create(sbi->ll_md_exp, op_data, lump, sizeof(*lump), mode,
405 current_fsuid(), current_fsgid(),
406 cfs_curproc_cap_pack(), 0, &request);
407 ll_finish_md_op_data(op_data);
411 ptlrpc_req_finished(request);
415 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
418 struct ll_sb_info *sbi = ll_i2sbi(inode);
419 struct md_op_data *op_data;
420 struct ptlrpc_request *req = NULL;
422 struct lustre_sb_info *lsi = s2lsi(inode->i_sb);
423 struct obd_device *mgc = lsi->lsi_mgc;
429 * This is coming from userspace, so should be in
430 * local endian. But the MDS would like it in little
431 * endian, so we swab it before we send it.
433 switch (lump->lmm_magic) {
434 case LOV_USER_MAGIC_V1: {
435 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V1))
436 lustre_swab_lov_user_md_v1(lump);
437 lum_size = sizeof(struct lov_user_md_v1);
440 case LOV_USER_MAGIC_V3: {
441 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V3))
442 lustre_swab_lov_user_md_v3(
443 (struct lov_user_md_v3 *)lump);
444 lum_size = sizeof(struct lov_user_md_v3);
447 case LMV_USER_MAGIC: {
448 if (lump->lmm_magic != cpu_to_le32(LMV_USER_MAGIC))
449 lustre_swab_lmv_user_md(
450 (struct lmv_user_md *)lump);
451 lum_size = sizeof(struct lmv_user_md);
455 CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
456 " %#08x != %#08x nor %#08x\n",
457 lump->lmm_magic, LOV_USER_MAGIC_V1,
463 lum_size = sizeof(struct lov_user_md_v1);
466 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
467 LUSTRE_OPC_ANY, NULL);
469 RETURN(PTR_ERR(op_data));
471 /* swabbing is done in lov_setstripe() on server side */
472 rc = md_setattr(sbi->ll_md_exp, op_data, lump, lum_size,
473 NULL, 0, &req, NULL);
474 ll_finish_md_op_data(op_data);
475 ptlrpc_req_finished(req);
477 if (rc != -EPERM && rc != -EACCES)
478 CERROR("mdc_setattr fails: rc = %d\n", rc);
481 /* In the following we use the fact that LOV_USER_MAGIC_V1 and
482 LOV_USER_MAGIC_V3 have the same initial fields so we do not
483 need the make the distiction between the 2 versions */
484 if (set_default && mgc->u.cli.cl_mgc_mgsexp) {
488 OBD_ALLOC(param, MGS_PARAM_MAXLEN);
490 GOTO(end, rc = -ENOMEM);
493 /* Get fsname and assume devname to be -MDT0000. */
494 ll_get_fsname(inode->i_sb, buf, MTI_NAME_MAXLEN);
495 strcat(buf, "-MDT0000.lov");
498 /* Set root stripesize */
499 sprintf(buf, ".stripesize=%u",
500 lump ? le32_to_cpu(lump->lmm_stripe_size) : 0);
501 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
505 /* Set root stripecount */
506 sprintf(buf, ".stripecount=%hd",
507 lump ? le16_to_cpu(lump->lmm_stripe_count) : 0);
508 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
512 /* Set root stripeoffset */
513 sprintf(buf, ".stripeoffset=%hd",
514 lump ? le16_to_cpu(lump->lmm_stripe_offset) :
515 (typeof(lump->lmm_stripe_offset))(-1));
516 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
520 OBD_FREE(param, MGS_PARAM_MAXLEN);
526 * This function will be used to get default LOV/LMV/Default LMV
527 * @valid will be used to indicate which stripe it will retrieve
528 * OBD_MD_MEA LMV stripe EA
529 * OBD_MD_DEFAULT_MEA Default LMV stripe EA
530 * otherwise Default LOV EA.
531 * Each time, it can only retrieve 1 stripe EA
533 int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size,
534 struct ptlrpc_request **request, obd_valid valid)
536 struct ll_sb_info *sbi = ll_i2sbi(inode);
537 struct mdt_body *body;
538 struct lov_mds_md *lmm = NULL;
539 struct ptlrpc_request *req = NULL;
541 struct md_op_data *op_data;
544 rc = ll_get_default_mdsize(sbi, &lmm_size);
548 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
549 0, lmm_size, LUSTRE_OPC_ANY,
552 RETURN(PTR_ERR(op_data));
554 op_data->op_valid = valid | OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
555 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
556 ll_finish_md_op_data(op_data);
558 CDEBUG(D_INFO, "md_getattr failed on inode "
559 DFID": rc %d\n", PFID(ll_inode2fid(inode)), rc);
563 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
564 LASSERT(body != NULL);
566 lmm_size = body->eadatasize;
568 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
570 GOTO(out, rc = -ENODATA);
573 lmm = req_capsule_server_sized_get(&req->rq_pill,
574 &RMF_MDT_MD, lmm_size);
575 LASSERT(lmm != NULL);
578 * This is coming from the MDS, so is probably in
579 * little endian. We convert it to host endian before
580 * passing it to userspace.
582 /* We don't swab objects for directories */
583 switch (le32_to_cpu(lmm->lmm_magic)) {
585 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
586 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
589 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
590 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
593 case LMV_MAGIC_MIGRATE:
594 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
595 lustre_swab_lmv_mds_md((union lmv_mds_md *)lmm);
598 if (LMV_USER_MAGIC != cpu_to_le32(LMV_USER_MAGIC))
599 lustre_swab_lmv_user_md((struct lmv_user_md *)lmm);
602 CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic);
607 *plmm_size = lmm_size;
612 int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid)
614 struct md_op_data *op_data;
619 OBD_ALLOC_PTR(op_data);
623 op_data->op_flags |= MF_GET_MDT_IDX;
624 op_data->op_fid1 = *fid;
625 rc = md_getattr(sbi->ll_md_exp, op_data, NULL);
626 mdt_index = op_data->op_mds;
627 OBD_FREE_PTR(op_data);
635 * Get MDT index for the inode.
637 int ll_get_mdt_idx(struct inode *inode)
639 return ll_get_mdt_idx_by_fid(ll_i2sbi(inode), ll_inode2fid(inode));
643 * Generic handler to do any pre-copy work.
645 * It send a first hsm_progress (with extent length == 0) to coordinator as a
646 * first information for it that real work has started.
648 * Moreover, for a ARCHIVE request, it will sample the file data version and
649 * store it in \a copy.
651 * \return 0 on success.
653 static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy)
655 struct ll_sb_info *sbi = ll_s2sbi(sb);
656 struct hsm_progress_kernel hpk;
660 /* Forge a hsm_progress based on data from copy. */
661 hpk.hpk_fid = copy->hc_hai.hai_fid;
662 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
663 hpk.hpk_extent.offset = copy->hc_hai.hai_extent.offset;
664 hpk.hpk_extent.length = 0;
667 hpk.hpk_data_version = 0;
670 /* For archive request, we need to read the current file version. */
671 if (copy->hc_hai.hai_action == HSMA_ARCHIVE) {
673 __u64 data_version = 0;
675 /* Get inode for this fid */
676 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
678 hpk.hpk_flags |= HP_FLAG_RETRY;
679 /* hpk_errval is >= 0 */
680 hpk.hpk_errval = -PTR_ERR(inode);
681 GOTO(progress, rc = PTR_ERR(inode));
684 /* Read current file data version */
685 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
688 CDEBUG(D_HSM, "Could not read file data version of "
689 DFID" (rc = %d). Archive request ("
690 LPX64") could not be done.\n",
691 PFID(©->hc_hai.hai_fid), rc,
692 copy->hc_hai.hai_cookie);
693 hpk.hpk_flags |= HP_FLAG_RETRY;
694 /* hpk_errval must be >= 0 */
695 hpk.hpk_errval = -rc;
699 /* Store it the hsm_copy for later copytool use.
700 * Always modified even if no lsm. */
701 copy->hc_data_version = data_version;
705 /* On error, the request should be considered as completed */
706 if (hpk.hpk_errval > 0)
707 hpk.hpk_flags |= HP_FLAG_COMPLETED;
708 rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
715 * Generic handler to do any post-copy work.
717 * It will send the last hsm_progress update to coordinator to inform it
718 * that copy is finished and whether it was successful or not.
721 * - for ARCHIVE request, it will sample the file data version and compare it
722 * with the version saved in ll_ioc_copy_start(). If they do not match, copy
723 * will be considered as failed.
724 * - for RESTORE request, it will sample the file data version and send it to
725 * coordinator which is useful if the file was imported as 'released'.
727 * \return 0 on success.
729 static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
731 struct ll_sb_info *sbi = ll_s2sbi(sb);
732 struct hsm_progress_kernel hpk;
736 /* If you modify the logic here, also check llapi_hsm_copy_end(). */
737 /* Take care: copy->hc_hai.hai_action, len, gid and data are not
738 * initialized if copy_end was called with copy == NULL.
741 /* Forge a hsm_progress based on data from copy. */
742 hpk.hpk_fid = copy->hc_hai.hai_fid;
743 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
744 hpk.hpk_extent = copy->hc_hai.hai_extent;
745 hpk.hpk_flags = copy->hc_flags | HP_FLAG_COMPLETED;
746 hpk.hpk_errval = copy->hc_errval;
747 hpk.hpk_data_version = 0;
749 /* For archive request, we need to check the file data was not changed.
751 * For restore request, we need to send the file data version, this is
752 * useful when the file was created using hsm_import.
754 if (((copy->hc_hai.hai_action == HSMA_ARCHIVE) ||
755 (copy->hc_hai.hai_action == HSMA_RESTORE)) &&
756 (copy->hc_errval == 0)) {
758 __u64 data_version = 0;
760 /* Get lsm for this fid */
761 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
763 hpk.hpk_flags |= HP_FLAG_RETRY;
764 /* hpk_errval must be >= 0 */
765 hpk.hpk_errval = -PTR_ERR(inode);
766 GOTO(progress, rc = PTR_ERR(inode));
769 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
772 CDEBUG(D_HSM, "Could not read file data version. "
773 "Request could not be confirmed.\n");
774 if (hpk.hpk_errval == 0)
775 hpk.hpk_errval = -rc;
779 /* Store it the hsm_copy for later copytool use.
780 * Always modified even if no lsm. */
781 hpk.hpk_data_version = data_version;
783 /* File could have been stripped during archiving, so we need
784 * to check anyway. */
785 if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) &&
786 (copy->hc_data_version != data_version)) {
787 CDEBUG(D_HSM, "File data version mismatched. "
788 "File content was changed during archiving. "
789 DFID", start:"LPX64" current:"LPX64"\n",
790 PFID(©->hc_hai.hai_fid),
791 copy->hc_data_version, data_version);
792 /* File was changed, send error to cdt. Do not ask for
793 * retry because if a file is modified frequently,
794 * the cdt will loop on retried archive requests.
795 * The policy engine will ask for a new archive later
796 * when the file will not be modified for some tunable
798 /* we do not notify caller */
799 hpk.hpk_flags &= ~HP_FLAG_RETRY;
800 /* hpk_errval must be >= 0 */
801 hpk.hpk_errval = EBUSY;
807 rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
814 static int copy_and_ioctl(int cmd, struct obd_export *exp,
815 const void __user *data, size_t size)
820 OBD_ALLOC(copy, size);
824 if (copy_from_user(copy, data, size)) {
829 rc = obd_iocontrol(cmd, exp, size, copy, NULL);
831 OBD_FREE(copy, size);
836 static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl)
838 int cmd = qctl->qc_cmd;
839 int type = qctl->qc_type;
840 int id = qctl->qc_id;
841 int valid = qctl->qc_valid;
846 case LUSTRE_Q_INVALIDATE:
847 case LUSTRE_Q_FINVALIDATE:
852 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
853 sbi->ll_flags & LL_SBI_RMT_CLIENT)
857 if (((type == USRQUOTA && current_euid() != id) ||
858 (type == GRPQUOTA && !in_egroup_p(id))) &&
859 (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
860 sbi->ll_flags & LL_SBI_RMT_CLIENT))
866 CERROR("unsupported quotactl op: %#x\n", cmd);
870 if (valid != QC_GENERAL) {
871 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
874 if (cmd == Q_GETINFO)
875 qctl->qc_cmd = Q_GETOINFO;
876 else if (cmd == Q_GETQUOTA)
877 qctl->qc_cmd = Q_GETOQUOTA;
883 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
884 sizeof(*qctl), qctl, NULL);
887 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp,
888 sizeof(*qctl), qctl, NULL);
891 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
892 sizeof(*qctl), qctl, NULL);
894 rc = obd_iocontrol(OBD_IOC_QUOTACTL,
896 sizeof(*qctl), qctl, NULL);
908 struct obd_quotactl *oqctl;
910 OBD_ALLOC_PTR(oqctl);
914 QCTL_COPY(oqctl, qctl);
915 rc = obd_quotactl(sbi->ll_md_exp, oqctl);
917 if (rc != -EALREADY && cmd == Q_QUOTAON) {
918 oqctl->qc_cmd = Q_QUOTAOFF;
919 obd_quotactl(sbi->ll_md_exp, oqctl);
924 /* If QIF_SPACE is not set, client should collect the
925 * space usage from OSSs by itself */
926 if (cmd == Q_GETQUOTA &&
927 !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) &&
928 !oqctl->qc_dqblk.dqb_curspace) {
929 struct obd_quotactl *oqctl_tmp;
931 OBD_ALLOC_PTR(oqctl_tmp);
932 if (oqctl_tmp == NULL)
933 GOTO(out, rc = -ENOMEM);
935 oqctl_tmp->qc_cmd = Q_GETOQUOTA;
936 oqctl_tmp->qc_id = oqctl->qc_id;
937 oqctl_tmp->qc_type = oqctl->qc_type;
939 /* collect space usage from OSTs */
940 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
941 rc = obd_quotactl(sbi->ll_dt_exp, oqctl_tmp);
942 if (!rc || rc == -EREMOTEIO) {
943 oqctl->qc_dqblk.dqb_curspace =
944 oqctl_tmp->qc_dqblk.dqb_curspace;
945 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
948 /* collect space & inode usage from MDTs */
949 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
950 oqctl_tmp->qc_dqblk.dqb_curinodes = 0;
951 rc = obd_quotactl(sbi->ll_md_exp, oqctl_tmp);
952 if (!rc || rc == -EREMOTEIO) {
953 oqctl->qc_dqblk.dqb_curspace +=
954 oqctl_tmp->qc_dqblk.dqb_curspace;
955 oqctl->qc_dqblk.dqb_curinodes =
956 oqctl_tmp->qc_dqblk.dqb_curinodes;
957 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
959 oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE;
962 OBD_FREE_PTR(oqctl_tmp);
965 QCTL_COPY(qctl, oqctl);
973 ll_getname(const char __user *filename)
976 char *tmp = __getname();
979 return ERR_PTR(-ENOMEM);
981 len = strncpy_from_user(tmp, filename, PATH_MAX);
984 else if (len > PATH_MAX)
994 #define ll_putname(filename) __putname(filename)
996 static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
998 struct inode *inode = file->f_dentry->d_inode;
999 struct ll_sb_info *sbi = ll_i2sbi(inode);
1000 struct obd_ioctl_data *data;
1004 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%#x\n",
1005 PFID(ll_inode2fid(inode)), inode, cmd);
1007 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1008 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1011 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1013 case FSFILT_IOC_GETFLAGS:
1014 case FSFILT_IOC_SETFLAGS:
1015 RETURN(ll_iocontrol(inode, file, cmd, arg));
1016 case FSFILT_IOC_GETVERSION_OLD:
1017 case FSFILT_IOC_GETVERSION:
1018 RETURN(put_user(inode->i_generation, (int *)arg));
1019 /* We need to special case any other ioctls we want to handle,
1020 * to send them to the MDS/OST as appropriate and to properly
1021 * network encode the arg field.
1022 case FSFILT_IOC_SETVERSION_OLD:
1023 case FSFILT_IOC_SETVERSION:
1025 case LL_IOC_GET_MDTIDX: {
1028 mdtidx = ll_get_mdt_idx(inode);
1032 if (put_user((int)mdtidx, (int*)arg))
1037 case IOC_MDC_LOOKUP: {
1038 int namelen, len = 0;
1042 rc = obd_ioctl_getdata(&buf, &len, (void *)arg);
1047 filename = data->ioc_inlbuf1;
1048 namelen = strlen(filename);
1050 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1051 GOTO(out_free, rc = -EINVAL);
1054 rc = ll_get_fid_by_name(inode, filename, namelen, NULL);
1056 CERROR("%s: lookup %.*s failed: rc = %d\n",
1057 ll_get_fsname(inode->i_sb, NULL, 0), namelen,
1062 obd_ioctl_freedata(buf, len);
1065 case LL_IOC_LMV_SETSTRIPE: {
1066 struct lmv_user_md *lum;
1074 rc = obd_ioctl_getdata(&buf, &len, (void *)arg);
1079 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1080 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1081 GOTO(lmv_out_free, rc = -EINVAL);
1083 filename = data->ioc_inlbuf1;
1084 namelen = data->ioc_inllen1;
1087 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1088 GOTO(lmv_out_free, rc = -EINVAL);
1090 lum = (struct lmv_user_md *)data->ioc_inlbuf2;
1091 lumlen = data->ioc_inllen2;
1093 if (lum->lum_magic != LMV_USER_MAGIC ||
1094 lumlen != sizeof(*lum)) {
1095 CERROR("%s: wrong lum magic %x or size %d: rc = %d\n",
1096 filename, lum->lum_magic, lumlen, -EFAULT);
1097 GOTO(lmv_out_free, rc = -EINVAL);
1101 * ll_dir_setdirstripe will be used to set dir stripe
1102 * mdc_create--->mdt_reint_create (with dirstripe)
1104 rc = ll_dir_setdirstripe(inode, lum, filename);
1106 obd_ioctl_freedata(buf, len);
1110 case LL_IOC_LMV_SET_DEFAULT_STRIPE: {
1111 struct lmv_user_md lum;
1112 struct lmv_user_md __user *ulump =
1113 (struct lmv_user_md __user *)arg;
1116 if (copy_from_user(&lum, ulump, sizeof(lum)))
1119 if (lum.lum_magic != LMV_USER_MAGIC)
1122 rc = ll_dir_setstripe(inode, (struct lov_user_md *)&lum, 0);
1126 case LL_IOC_LOV_SETSTRIPE: {
1127 struct lov_user_md_v3 lumv3;
1128 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1129 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1130 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1132 int set_default = 0;
1134 LASSERT(sizeof(lumv3) == sizeof(*lumv3p));
1135 LASSERT(sizeof(lumv3.lmm_objects[0]) ==
1136 sizeof(lumv3p->lmm_objects[0]));
1137 /* first try with v1 which is smaller than v3 */
1138 if (copy_from_user(lumv1, lumv1p, sizeof(*lumv1)))
1141 if ((lumv1->lmm_magic == LOV_USER_MAGIC_V3) ) {
1142 if (copy_from_user(&lumv3, lumv3p, sizeof(lumv3)))
1146 if (inode->i_sb->s_root == file->f_dentry)
1149 /* in v1 and v3 cases lumv1 points to data */
1150 rc = ll_dir_setstripe(inode, lumv1, set_default);
1154 case LL_IOC_LMV_GETSTRIPE: {
1155 struct lmv_user_md __user *ulmv =
1156 (struct lmv_user_md __user *)arg;
1157 struct lmv_user_md lum;
1158 struct ptlrpc_request *request = NULL;
1159 union lmv_mds_md *lmm = NULL;
1161 obd_valid valid = 0;
1162 struct lmv_user_md *tmp = NULL;
1169 if (copy_from_user(&lum, ulmv, sizeof(*ulmv)))
1172 /* lum_magic will indicate which stripe the ioctl will like
1173 * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC
1174 * is for default LMV stripe */
1175 if (lum.lum_magic == LMV_MAGIC_V1)
1176 valid |= OBD_MD_MEA;
1177 else if (lum.lum_magic == LMV_USER_MAGIC)
1178 valid |= OBD_MD_DEFAULT_MEA;
1182 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, &request,
1184 if (rc != 0 && rc != -ENODATA)
1185 GOTO(finish_req, rc);
1187 /* Get default LMV EA */
1188 if (lum.lum_magic == LMV_USER_MAGIC) {
1190 GOTO(finish_req, rc);
1192 if (lmmsize > sizeof(*ulmv))
1193 GOTO(finish_req, rc = -EINVAL);
1195 if (copy_to_user(ulmv, lmm, lmmsize))
1196 GOTO(finish_req, rc = -EFAULT);
1198 GOTO(finish_req, rc);
1201 /* Get normal LMV EA */
1202 if (rc == -ENODATA) {
1205 LASSERT(lmm != NULL);
1206 stripe_count = lmv_mds_md_stripe_count_get(lmm);
1209 lum_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1210 OBD_ALLOC(tmp, lum_size);
1212 GOTO(finish_req, rc = -ENOMEM);
1214 tmp->lum_magic = LMV_MAGIC_V1;
1215 tmp->lum_stripe_count = 1;
1216 mdt_index = ll_get_mdt_idx(inode);
1218 GOTO(out_tmp, rc = -ENOMEM);
1219 tmp->lum_stripe_offset = mdt_index;
1220 tmp->lum_objects[0].lum_mds = mdt_index;
1221 tmp->lum_objects[0].lum_fid = *ll_inode2fid(inode);
1222 for (i = 1; i < stripe_count; i++) {
1223 struct lmv_mds_md_v1 *lmm1;
1225 lmm1 = &lmm->lmv_md_v1;
1226 mdt_index = ll_get_mdt_idx_by_fid(sbi,
1227 &lmm1->lmv_stripe_fids[i]);
1229 GOTO(out_tmp, rc = mdt_index);
1231 tmp->lum_objects[i].lum_mds = mdt_index;
1232 tmp->lum_objects[i].lum_fid = lmm1->lmv_stripe_fids[i];
1233 tmp->lum_stripe_count++;
1236 if (copy_to_user(ulmv, tmp, lum_size))
1237 GOTO(out_tmp, rc = -EFAULT);
1239 OBD_FREE(tmp, lum_size);
1241 ptlrpc_req_finished(request);
1245 case LL_IOC_REMOVE_ENTRY: {
1246 char *filename = NULL;
1250 /* Here is a little hack to avoid sending REINT_RMENTRY to
1251 * unsupported server, which might crash the server(LU-2730),
1252 * Because both LVB_TYPE and REINT_RMENTRY will be supported
1253 * on 2.4, we use OBD_CONNECT_LVB_TYPE to detect whether the
1254 * server will support REINT_RMENTRY XXX*/
1255 if (!(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_LVB_TYPE))
1258 filename = ll_getname((const char *)arg);
1259 if (IS_ERR(filename))
1260 RETURN(PTR_ERR(filename));
1262 namelen = strlen(filename);
1264 GOTO(out_rmdir, rc = -EINVAL);
1266 rc = ll_rmdir_entry(inode, filename, namelen);
1269 ll_putname(filename);
1272 case LL_IOC_LOV_SWAP_LAYOUTS:
1274 case LL_IOC_OBD_STATFS:
1275 RETURN(ll_obd_statfs(inode, (void *)arg));
1276 case LL_IOC_LOV_GETSTRIPE:
1277 case LL_IOC_MDC_GETINFO:
1278 case IOC_MDC_GETFILEINFO:
1279 case IOC_MDC_GETFILESTRIPE: {
1280 struct ptlrpc_request *request = NULL;
1281 struct lov_user_md *lump;
1282 struct lov_mds_md *lmm = NULL;
1283 struct mdt_body *body;
1284 char *filename = NULL;
1287 if (cmd == IOC_MDC_GETFILEINFO ||
1288 cmd == IOC_MDC_GETFILESTRIPE) {
1289 filename = ll_getname((const char *)arg);
1290 if (IS_ERR(filename))
1291 RETURN(PTR_ERR(filename));
1293 rc = ll_lov_getstripe_ea_info(inode, filename, &lmm,
1294 &lmmsize, &request);
1296 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize,
1301 body = req_capsule_server_get(&request->rq_pill,
1303 LASSERT(body != NULL);
1309 if (rc == -ENODATA && (cmd == IOC_MDC_GETFILEINFO ||
1310 cmd == LL_IOC_MDC_GETINFO))
1311 GOTO(skip_lmm, rc = 0);
1316 if (cmd == IOC_MDC_GETFILESTRIPE ||
1317 cmd == LL_IOC_LOV_GETSTRIPE) {
1318 lump = (struct lov_user_md *)arg;
1320 struct lov_user_mds_data *lmdp;
1321 lmdp = (struct lov_user_mds_data *)arg;
1322 lump = &lmdp->lmd_lmm;
1324 if (copy_to_user(lump, lmm, lmmsize)) {
1325 if (copy_to_user(lump, lmm, sizeof(*lump)))
1326 GOTO(out_req, rc = -EFAULT);
1330 if (cmd == IOC_MDC_GETFILEINFO || cmd == LL_IOC_MDC_GETINFO) {
1331 struct lov_user_mds_data *lmdp;
1334 st.st_dev = inode->i_sb->s_dev;
1335 st.st_mode = body->mode;
1336 st.st_nlink = body->nlink;
1337 st.st_uid = body->uid;
1338 st.st_gid = body->gid;
1339 st.st_rdev = body->rdev;
1340 st.st_size = body->size;
1341 st.st_blksize = PAGE_CACHE_SIZE;
1342 st.st_blocks = body->blocks;
1343 st.st_atime = body->atime;
1344 st.st_mtime = body->mtime;
1345 st.st_ctime = body->ctime;
1346 st.st_ino = inode->i_ino;
1348 lmdp = (struct lov_user_mds_data *)arg;
1349 if (copy_to_user(&lmdp->lmd_st, &st, sizeof(st)))
1350 GOTO(out_req, rc = -EFAULT);
1355 ptlrpc_req_finished(request);
1357 ll_putname(filename);
1360 case IOC_LOV_GETINFO: {
1361 struct lov_user_mds_data *lumd;
1362 struct lov_stripe_md *lsm;
1363 struct lov_user_md *lum;
1364 struct lov_mds_md *lmm;
1368 lumd = (struct lov_user_mds_data *)arg;
1369 lum = &lumd->lmd_lmm;
1371 rc = ll_get_max_mdsize(sbi, &lmmsize);
1375 OBD_ALLOC_LARGE(lmm, lmmsize);
1379 if (copy_from_user(lmm, lum, lmmsize))
1380 GOTO(free_lmm, rc = -EFAULT);
1382 switch (lmm->lmm_magic) {
1383 case LOV_USER_MAGIC_V1:
1384 if (LOV_USER_MAGIC_V1 == cpu_to_le32(LOV_USER_MAGIC_V1))
1386 /* swab objects first so that stripes num will be sane */
1387 lustre_swab_lov_user_md_objects(
1388 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1389 ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count);
1390 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1392 case LOV_USER_MAGIC_V3:
1393 if (LOV_USER_MAGIC_V3 == cpu_to_le32(LOV_USER_MAGIC_V3))
1395 /* swab objects first so that stripes num will be sane */
1396 lustre_swab_lov_user_md_objects(
1397 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1398 ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
1399 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1402 GOTO(free_lmm, rc = -EINVAL);
1405 rc = obd_unpackmd(sbi->ll_dt_exp, &lsm, lmm, lmmsize);
1407 GOTO(free_lmm, rc = -ENOMEM);
1409 /* Perform glimpse_size operation. */
1410 memset(&st, 0, sizeof(st));
1412 rc = ll_glimpse_ioctl(sbi, lsm, &st);
1416 if (copy_to_user(&lumd->lmd_st, &st, sizeof(st)))
1417 GOTO(free_lsm, rc = -EFAULT);
1421 obd_free_memmd(sbi->ll_dt_exp, &lsm);
1423 OBD_FREE_LARGE(lmm, lmmsize);
1426 case OBD_IOC_LLOG_CATINFO: {
1427 RETURN(-EOPNOTSUPP);
1429 case OBD_IOC_QUOTACHECK: {
1430 struct obd_quotactl *oqctl;
1433 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
1434 sbi->ll_flags & LL_SBI_RMT_CLIENT)
1437 OBD_ALLOC_PTR(oqctl);
1440 oqctl->qc_type = arg;
1441 rc = obd_quotacheck(sbi->ll_md_exp, oqctl);
1443 CDEBUG(D_INFO, "md_quotacheck failed: rc %d\n", rc);
1447 rc = obd_quotacheck(sbi->ll_dt_exp, oqctl);
1449 CDEBUG(D_INFO, "obd_quotacheck failed: rc %d\n", rc);
1451 OBD_FREE_PTR(oqctl);
1454 case OBD_IOC_POLL_QUOTACHECK: {
1455 struct if_quotacheck *check;
1457 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
1458 sbi->ll_flags & LL_SBI_RMT_CLIENT)
1461 OBD_ALLOC_PTR(check);
1465 rc = obd_iocontrol(cmd, sbi->ll_md_exp, 0, (void *)check,
1468 CDEBUG(D_QUOTA, "mdc ioctl %d failed: %d\n", cmd, rc);
1469 if (copy_to_user((void *)arg, check,
1471 CDEBUG(D_QUOTA, "copy_to_user failed\n");
1475 rc = obd_iocontrol(cmd, sbi->ll_dt_exp, 0, (void *)check,
1478 CDEBUG(D_QUOTA, "osc ioctl %d failed: %d\n", cmd, rc);
1479 if (copy_to_user((void *)arg, check,
1481 CDEBUG(D_QUOTA, "copy_to_user failed\n");
1485 OBD_FREE_PTR(check);
1488 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1489 case LL_IOC_QUOTACTL_18: {
1490 /* copy the old 1.x quota struct for internal use, then copy
1491 * back into old format struct. For 1.8 compatibility. */
1492 struct if_quotactl_18 *qctl_18;
1493 struct if_quotactl *qctl_20;
1495 OBD_ALLOC_PTR(qctl_18);
1499 OBD_ALLOC_PTR(qctl_20);
1501 GOTO(out_quotactl_18, rc = -ENOMEM);
1503 if (copy_from_user(qctl_18, (void *)arg, sizeof(*qctl_18)))
1504 GOTO(out_quotactl_20, rc = -ENOMEM);
1506 QCTL_COPY(qctl_20, qctl_18);
1507 qctl_20->qc_idx = 0;
1509 /* XXX: dqb_valid was borrowed as a flag to mark that
1510 * only mds quota is wanted */
1511 if (qctl_18->qc_cmd == Q_GETQUOTA &&
1512 qctl_18->qc_dqblk.dqb_valid) {
1513 qctl_20->qc_valid = QC_MDTIDX;
1514 qctl_20->qc_dqblk.dqb_valid = 0;
1515 } else if (qctl_18->obd_uuid.uuid[0] != '\0') {
1516 qctl_20->qc_valid = QC_UUID;
1517 qctl_20->obd_uuid = qctl_18->obd_uuid;
1519 qctl_20->qc_valid = QC_GENERAL;
1522 rc = quotactl_ioctl(sbi, qctl_20);
1525 QCTL_COPY(qctl_18, qctl_20);
1526 qctl_18->obd_uuid = qctl_20->obd_uuid;
1528 if (copy_to_user((void *)arg, qctl_18,
1534 OBD_FREE_PTR(qctl_20);
1536 OBD_FREE_PTR(qctl_18);
1540 #warning "remove old LL_IOC_QUOTACTL_18 compatibility code"
1541 #endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0) */
1542 case LL_IOC_QUOTACTL: {
1543 struct if_quotactl *qctl;
1545 OBD_ALLOC_PTR(qctl);
1549 if (copy_from_user(qctl, (void *)arg, sizeof(*qctl)))
1550 GOTO(out_quotactl, rc = -EFAULT);
1552 rc = quotactl_ioctl(sbi, qctl);
1554 if (rc == 0 && copy_to_user((void *)arg, qctl, sizeof(*qctl)))
1561 case OBD_IOC_GETDTNAME:
1562 case OBD_IOC_GETMDNAME:
1563 RETURN(ll_get_obd_name(inode, cmd, arg));
1564 case LL_IOC_FLUSHCTX:
1565 RETURN(ll_flush_ctx(inode));
1566 #ifdef CONFIG_FS_POSIX_ACL
1567 case LL_IOC_RMTACL: {
1568 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
1569 inode == inode->i_sb->s_root->d_inode) {
1570 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1572 LASSERT(fd != NULL);
1573 rc = rct_add(&sbi->ll_rct, current_pid(), arg);
1575 fd->fd_flags |= LL_FILE_RMTACL;
1581 case LL_IOC_GETOBDCOUNT: {
1583 struct obd_export *exp;
1585 if (copy_from_user(&count, (int *)arg, sizeof(int)))
1588 /* get ost count when count is zero, get mdt count otherwise */
1589 exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp;
1590 vallen = sizeof(count);
1591 rc = obd_get_info(NULL, exp, sizeof(KEY_TGT_COUNT),
1592 KEY_TGT_COUNT, &vallen, &count, NULL);
1594 CERROR("get target count failed: %d\n", rc);
1598 if (copy_to_user((int *)arg, &count, sizeof(int)))
1603 case LL_IOC_PATH2FID:
1604 if (copy_to_user((void *)arg, ll_inode2fid(inode),
1605 sizeof(struct lu_fid)))
1608 case LL_IOC_GET_CONNECT_FLAGS: {
1609 RETURN(obd_iocontrol(cmd, sbi->ll_md_exp, 0, NULL, (void*)arg));
1611 case OBD_IOC_CHANGELOG_SEND:
1612 case OBD_IOC_CHANGELOG_CLEAR:
1613 rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void *)arg,
1614 sizeof(struct ioc_changelog));
1616 case OBD_IOC_FID2PATH:
1617 RETURN(ll_fid2path(inode, (void *)arg));
1618 case LL_IOC_HSM_REQUEST: {
1619 struct hsm_user_request *hur;
1626 /* We don't know the true size yet; copy the fixed-size part */
1627 if (copy_from_user(hur, (void *)arg, sizeof(*hur))) {
1632 /* Compute the whole struct size */
1633 totalsize = hur_len(hur);
1636 /* Final size will be more than double totalsize */
1637 if (totalsize >= MDS_MAXREQSIZE / 3)
1640 OBD_ALLOC_LARGE(hur, totalsize);
1644 /* Copy the whole struct */
1645 if (copy_from_user(hur, (void *)arg, totalsize)) {
1646 OBD_FREE_LARGE(hur, totalsize);
1650 if (hur->hur_request.hr_action == HUA_RELEASE) {
1651 const struct lu_fid *fid;
1655 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
1656 fid = &hur->hur_user_item[i].hui_fid;
1657 f = search_inode_for_lustre(inode->i_sb, fid);
1663 rc = ll_hsm_release(f);
1669 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), totalsize,
1673 OBD_FREE_LARGE(hur, totalsize);
1677 case LL_IOC_HSM_PROGRESS: {
1678 struct hsm_progress_kernel hpk;
1679 struct hsm_progress hp;
1681 if (copy_from_user(&hp, (void *)arg, sizeof(hp)))
1684 hpk.hpk_fid = hp.hp_fid;
1685 hpk.hpk_cookie = hp.hp_cookie;
1686 hpk.hpk_extent = hp.hp_extent;
1687 hpk.hpk_flags = hp.hp_flags;
1688 hpk.hpk_errval = hp.hp_errval;
1689 hpk.hpk_data_version = 0;
1691 /* File may not exist in Lustre; all progress
1692 * reported to Lustre root */
1693 rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk,
1697 case LL_IOC_HSM_CT_START:
1698 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1701 rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void *)arg,
1702 sizeof(struct lustre_kernelcomm));
1705 case LL_IOC_HSM_COPY_START: {
1706 struct hsm_copy *copy;
1709 OBD_ALLOC_PTR(copy);
1712 if (copy_from_user(copy, (char *)arg, sizeof(*copy))) {
1717 rc = ll_ioc_copy_start(inode->i_sb, copy);
1718 if (copy_to_user((char *)arg, copy, sizeof(*copy)))
1724 case LL_IOC_HSM_COPY_END: {
1725 struct hsm_copy *copy;
1728 OBD_ALLOC_PTR(copy);
1731 if (copy_from_user(copy, (char *)arg, sizeof(*copy))) {
1736 rc = ll_ioc_copy_end(inode->i_sb, copy);
1737 if (copy_to_user((char *)arg, copy, sizeof(*copy)))
1743 case LL_IOC_MIGRATE: {
1745 const char *filename;
1751 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1755 data = (struct obd_ioctl_data *)buf;
1756 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1757 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1758 GOTO(migrate_free, rc = -EINVAL);
1760 filename = data->ioc_inlbuf1;
1761 namelen = data->ioc_inllen1;
1762 /* \0 is packed at the end of filename */
1763 if (namelen < 1 || namelen != strlen(filename) + 1)
1764 GOTO(migrate_free, rc = -EINVAL);
1766 if (data->ioc_inllen2 != sizeof(mdtidx))
1767 GOTO(migrate_free, rc = -EINVAL);
1768 mdtidx = *(int *)data->ioc_inlbuf2;
1770 rc = ll_migrate(inode, file, mdtidx, filename, namelen - 1);
1772 obd_ioctl_freedata(buf, len);
1777 RETURN(obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL,
1782 static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
1784 struct inode *inode = file->f_mapping->host;
1785 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1786 struct ll_sb_info *sbi = ll_i2sbi(inode);
1787 int api32 = ll_need_32bit_api(sbi);
1788 loff_t ret = -EINVAL;
1791 mutex_lock(&inode->i_mutex);
1796 offset += file->f_pos;
1802 offset += LL_DIR_END_OFF_32BIT;
1804 offset += LL_DIR_END_OFF;
1811 ((api32 && offset <= LL_DIR_END_OFF_32BIT) ||
1812 (!api32 && offset <= LL_DIR_END_OFF))) {
1813 if (offset != file->f_pos) {
1814 if ((api32 && offset == LL_DIR_END_OFF_32BIT) ||
1815 (!api32 && offset == LL_DIR_END_OFF))
1816 fd->lfd_pos = MDS_DIR_END_OFF;
1817 else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH)
1818 fd->lfd_pos = offset << 32;
1820 fd->lfd_pos = offset;
1821 file->f_pos = offset;
1822 file->f_version = 0;
1829 mutex_unlock(&inode->i_mutex);
1833 int ll_dir_open(struct inode *inode, struct file *file)
1836 RETURN(ll_file_open(inode, file));
1839 int ll_dir_release(struct inode *inode, struct file *file)
1842 RETURN(ll_file_release(inode, file));
1845 struct file_operations ll_dir_operations = {
1846 .llseek = ll_dir_seek,
1847 .open = ll_dir_open,
1848 .release = ll_dir_release,
1849 .read = generic_read_dir,
1850 #ifdef HAVE_DIR_CONTEXT
1851 .iterate = ll_iterate,
1853 .readdir = ll_readdir,
1855 .unlocked_ioctl = ll_dir_ioctl,