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 int ll_dir_read(struct inode *inode, struct md_op_data *op_data,
199 void *cookie, filldir_t filldir)
201 struct ll_sb_info *sbi = ll_i2sbi(inode);
202 struct ll_dir_chain chain;
203 struct lu_dirent *ent;
204 int api32 = ll_need_32bit_api(sbi);
205 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
208 __u64 hash = MDS_DIR_END_OFF;
209 __u64 last_hash = MDS_DIR_END_OFF;
210 struct page *page = NULL;
213 ll_dir_chain_init(&chain);
214 for (ent = ll_dir_entry_start(inode, op_data, &page);
215 ent != NULL && !IS_ERR(ent) && !done;
216 ent = ll_dir_entry_next(inode, op_data, ent, &page)) {
223 hash = le64_to_cpu(ent->lde_hash);
224 if (hash < op_data->op_hash_offset)
226 * Skip until we find target hash
230 namelen = le16_to_cpu(ent->lde_namelen);
241 fid_le_to_cpu(&fid, &ent->lde_fid);
242 ino = cl_fid_build_ino(&fid, api32);
243 type = ll_dirent_type_get(ent);
244 /* For 'll_nfs_get_name_filldir()', it will try
245 * to access the 'ent' through its 'lde_name',
246 * so the parameter 'name' for 'filldir()' must
247 * be part of the 'ent'. */
248 done = filldir(cookie, ent->lde_name, namelen, lhash,
251 if (op_data->op_hash_offset != MDS_DIR_END_OFF)
252 op_data->op_hash_offset = last_hash;
264 page_cache_release(page);
267 ll_dir_chain_fini(&chain);
271 static int ll_readdir(struct file *filp, void *cookie, filldir_t filldir)
273 struct inode *inode = filp->f_dentry->d_inode;
274 struct ll_file_data *lfd = LUSTRE_FPRIVATE(filp);
275 struct ll_sb_info *sbi = ll_i2sbi(inode);
276 __u64 pos = lfd->lfd_pos;
277 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
278 int api32 = ll_need_32bit_api(sbi);
279 struct md_op_data *op_data;
281 #ifdef HAVE_TOUCH_ATIME_1ARG
291 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) pos/size"
292 "%lu/%llu 32bit_api %d\n", PFID(ll_inode2fid(inode)),
293 inode, (unsigned long)pos, i_size_read(inode), api32);
295 if (pos == MDS_DIR_END_OFF)
301 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
302 LUSTRE_OPC_ANY, inode);
304 GOTO(out, rc = PTR_ERR(op_data));
306 op_data->op_hash_offset = pos;
307 op_data->op_max_pages = sbi->ll_md_brw_size >> PAGE_CACHE_SHIFT;
308 rc = ll_dir_read(inode, op_data, cookie, filldir);
310 lfd->lfd_pos = op_data->op_hash_offset;
312 if (pos == MDS_DIR_END_OFF) {
314 filp->f_pos = LL_DIR_END_OFF_32BIT;
316 filp->f_pos = LL_DIR_END_OFF;
319 filp->f_pos = op_data->op_hash_offset >> 32;
321 filp->f_pos = op_data->op_hash_offset;
324 ll_finish_md_op_data(op_data);
325 filp->f_version = inode->i_version;
326 #ifdef HAVE_TOUCH_ATIME_1ARG
327 #ifdef HAVE_F_PATH_MNT
328 path.mnt = filp->f_path.mnt;
330 path.mnt = filp->f_vfsmnt;
332 path.dentry = filp->f_dentry;
335 touch_atime(filp->f_vfsmnt, filp->f_dentry);
340 ll_stats_ops_tally(sbi, LPROC_LL_READDIR, 1);
345 int ll_send_mgc_param(struct obd_export *mgc, char *string)
347 struct mgs_send_param *msp;
354 strncpy(msp->mgs_param, string, MGS_PARAM_MAXLEN);
355 rc = obd_set_info_async(NULL, mgc, sizeof(KEY_SET_INFO), KEY_SET_INFO,
356 sizeof(struct mgs_send_param), msp, NULL);
358 CERROR("Failed to set parameter: %d\n", rc);
364 static int ll_dir_setdirstripe(struct inode *dir, struct lmv_user_md *lump,
365 const char *filename)
367 struct ptlrpc_request *request = NULL;
368 struct md_op_data *op_data;
369 struct ll_sb_info *sbi = ll_i2sbi(dir);
374 if (unlikely(lump->lum_magic != LMV_USER_MAGIC))
377 if (lump->lum_stripe_offset == (__u32)-1) {
380 mdtidx = ll_get_mdt_idx(dir);
384 lump->lum_stripe_offset = mdtidx;
387 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) name %s"
388 "stripe_offset %d, stripe_count: %u\n",
389 PFID(ll_inode2fid(dir)), dir, filename,
390 (int)lump->lum_stripe_offset, lump->lum_stripe_count);
392 if (lump->lum_magic != cpu_to_le32(LMV_USER_MAGIC))
393 lustre_swab_lmv_user_md(lump);
395 mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
396 op_data = ll_prep_md_op_data(NULL, dir, NULL, filename,
397 strlen(filename), mode, LUSTRE_OPC_MKDIR,
400 GOTO(err_exit, err = PTR_ERR(op_data));
402 op_data->op_cli_flags |= CLI_SET_MEA;
403 err = md_create(sbi->ll_md_exp, op_data, lump, sizeof(*lump), mode,
404 current_fsuid(), current_fsgid(),
405 cfs_curproc_cap_pack(), 0, &request);
406 ll_finish_md_op_data(op_data);
410 ptlrpc_req_finished(request);
414 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
417 struct ll_sb_info *sbi = ll_i2sbi(inode);
418 struct md_op_data *op_data;
419 struct ptlrpc_request *req = NULL;
421 struct lustre_sb_info *lsi = s2lsi(inode->i_sb);
422 struct obd_device *mgc = lsi->lsi_mgc;
428 * This is coming from userspace, so should be in
429 * local endian. But the MDS would like it in little
430 * endian, so we swab it before we send it.
432 switch (lump->lmm_magic) {
433 case LOV_USER_MAGIC_V1: {
434 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V1))
435 lustre_swab_lov_user_md_v1(lump);
436 lum_size = sizeof(struct lov_user_md_v1);
439 case LOV_USER_MAGIC_V3: {
440 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V3))
441 lustre_swab_lov_user_md_v3(
442 (struct lov_user_md_v3 *)lump);
443 lum_size = sizeof(struct lov_user_md_v3);
446 case LMV_USER_MAGIC: {
447 if (lump->lmm_magic != cpu_to_le32(LMV_USER_MAGIC))
448 lustre_swab_lmv_user_md(
449 (struct lmv_user_md *)lump);
450 lum_size = sizeof(struct lmv_user_md);
454 CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
455 " %#08x != %#08x nor %#08x\n",
456 lump->lmm_magic, LOV_USER_MAGIC_V1,
462 lum_size = sizeof(struct lov_user_md_v1);
465 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
466 LUSTRE_OPC_ANY, NULL);
468 RETURN(PTR_ERR(op_data));
470 /* swabbing is done in lov_setstripe() on server side */
471 rc = md_setattr(sbi->ll_md_exp, op_data, lump, lum_size,
472 NULL, 0, &req, NULL);
473 ll_finish_md_op_data(op_data);
474 ptlrpc_req_finished(req);
476 if (rc != -EPERM && rc != -EACCES)
477 CERROR("mdc_setattr fails: rc = %d\n", rc);
480 /* In the following we use the fact that LOV_USER_MAGIC_V1 and
481 LOV_USER_MAGIC_V3 have the same initial fields so we do not
482 need the make the distiction between the 2 versions */
483 if (set_default && mgc->u.cli.cl_mgc_mgsexp) {
487 OBD_ALLOC(param, MGS_PARAM_MAXLEN);
489 GOTO(end, rc = -ENOMEM);
492 /* Get fsname and assume devname to be -MDT0000. */
493 ll_get_fsname(inode->i_sb, buf, MTI_NAME_MAXLEN);
494 strcat(buf, "-MDT0000.lov");
497 /* Set root stripesize */
498 sprintf(buf, ".stripesize=%u",
499 lump ? le32_to_cpu(lump->lmm_stripe_size) : 0);
500 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
504 /* Set root stripecount */
505 sprintf(buf, ".stripecount=%hd",
506 lump ? le16_to_cpu(lump->lmm_stripe_count) : 0);
507 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
511 /* Set root stripeoffset */
512 sprintf(buf, ".stripeoffset=%hd",
513 lump ? le16_to_cpu(lump->lmm_stripe_offset) :
514 (typeof(lump->lmm_stripe_offset))(-1));
515 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
519 OBD_FREE(param, MGS_PARAM_MAXLEN);
525 * This function will be used to get default LOV/LMV/Default LMV
526 * @valid will be used to indicate which stripe it will retrieve
527 * OBD_MD_MEA LMV stripe EA
528 * OBD_MD_DEFAULT_MEA Default LMV stripe EA
529 * otherwise Default LOV EA.
530 * Each time, it can only retrieve 1 stripe EA
532 int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size,
533 struct ptlrpc_request **request, obd_valid valid)
535 struct ll_sb_info *sbi = ll_i2sbi(inode);
536 struct mdt_body *body;
537 struct lov_mds_md *lmm = NULL;
538 struct ptlrpc_request *req = NULL;
540 struct md_op_data *op_data;
543 rc = ll_get_max_mdsize(sbi, &lmm_size);
547 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
548 0, lmm_size, LUSTRE_OPC_ANY,
551 RETURN(PTR_ERR(op_data));
553 op_data->op_valid = valid | OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
554 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
555 ll_finish_md_op_data(op_data);
557 CDEBUG(D_INFO, "md_getattr failed on inode "
558 DFID": rc %d\n", PFID(ll_inode2fid(inode)), rc);
562 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
563 LASSERT(body != NULL);
565 lmm_size = body->eadatasize;
567 if (!(body->valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
569 GOTO(out, rc = -ENODATA);
572 lmm = req_capsule_server_sized_get(&req->rq_pill,
573 &RMF_MDT_MD, lmm_size);
574 LASSERT(lmm != NULL);
577 * This is coming from the MDS, so is probably in
578 * little endian. We convert it to host endian before
579 * passing it to userspace.
581 /* We don't swab objects for directories */
582 switch (le32_to_cpu(lmm->lmm_magic)) {
584 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
585 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
588 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
589 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
592 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
593 lustre_swab_lmv_mds_md((union lmv_mds_md *)lmm);
596 if (LMV_USER_MAGIC != cpu_to_le32(LMV_USER_MAGIC))
597 lustre_swab_lmv_user_md((struct lmv_user_md *)lmm);
600 CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic);
605 *plmm_size = lmm_size;
610 static int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi,
611 const struct lu_fid *fid)
613 struct md_op_data *op_data;
618 OBD_ALLOC_PTR(op_data);
622 op_data->op_flags |= MF_GET_MDT_IDX;
623 op_data->op_fid1 = *fid;
624 rc = md_getattr(sbi->ll_md_exp, op_data, NULL);
625 mdt_index = op_data->op_mds;
626 OBD_FREE_PTR(op_data);
634 * Get MDT index for the inode.
636 int ll_get_mdt_idx(struct inode *inode)
638 return ll_get_mdt_idx_by_fid(ll_i2sbi(inode), ll_inode2fid(inode));
642 * Generic handler to do any pre-copy work.
644 * It send a first hsm_progress (with extent length == 0) to coordinator as a
645 * first information for it that real work has started.
647 * Moreover, for a ARCHIVE request, it will sample the file data version and
648 * store it in \a copy.
650 * \return 0 on success.
652 static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy)
654 struct ll_sb_info *sbi = ll_s2sbi(sb);
655 struct hsm_progress_kernel hpk;
659 /* Forge a hsm_progress based on data from copy. */
660 hpk.hpk_fid = copy->hc_hai.hai_fid;
661 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
662 hpk.hpk_extent.offset = copy->hc_hai.hai_extent.offset;
663 hpk.hpk_extent.length = 0;
666 hpk.hpk_data_version = 0;
669 /* For archive request, we need to read the current file version. */
670 if (copy->hc_hai.hai_action == HSMA_ARCHIVE) {
672 __u64 data_version = 0;
674 /* Get inode for this fid */
675 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
677 hpk.hpk_flags |= HP_FLAG_RETRY;
678 /* hpk_errval is >= 0 */
679 hpk.hpk_errval = -PTR_ERR(inode);
680 GOTO(progress, rc = PTR_ERR(inode));
683 /* Read current file data version */
684 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
687 CDEBUG(D_HSM, "Could not read file data version of "
688 DFID" (rc = %d). Archive request ("
689 LPX64") could not be done.\n",
690 PFID(©->hc_hai.hai_fid), rc,
691 copy->hc_hai.hai_cookie);
692 hpk.hpk_flags |= HP_FLAG_RETRY;
693 /* hpk_errval must be >= 0 */
694 hpk.hpk_errval = -rc;
698 /* Store it the hsm_copy for later copytool use.
699 * Always modified even if no lsm. */
700 copy->hc_data_version = data_version;
704 /* On error, the request should be considered as completed */
705 if (hpk.hpk_errval > 0)
706 hpk.hpk_flags |= HP_FLAG_COMPLETED;
707 rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
714 * Generic handler to do any post-copy work.
716 * It will send the last hsm_progress update to coordinator to inform it
717 * that copy is finished and whether it was successful or not.
720 * - for ARCHIVE request, it will sample the file data version and compare it
721 * with the version saved in ll_ioc_copy_start(). If they do not match, copy
722 * will be considered as failed.
723 * - for RESTORE request, it will sample the file data version and send it to
724 * coordinator which is useful if the file was imported as 'released'.
726 * \return 0 on success.
728 static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
730 struct ll_sb_info *sbi = ll_s2sbi(sb);
731 struct hsm_progress_kernel hpk;
735 /* If you modify the logic here, also check llapi_hsm_copy_end(). */
736 /* Take care: copy->hc_hai.hai_action, len, gid and data are not
737 * initialized if copy_end was called with copy == NULL.
740 /* Forge a hsm_progress based on data from copy. */
741 hpk.hpk_fid = copy->hc_hai.hai_fid;
742 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
743 hpk.hpk_extent = copy->hc_hai.hai_extent;
744 hpk.hpk_flags = copy->hc_flags | HP_FLAG_COMPLETED;
745 hpk.hpk_errval = copy->hc_errval;
746 hpk.hpk_data_version = 0;
748 /* For archive request, we need to check the file data was not changed.
750 * For restore request, we need to send the file data version, this is
751 * useful when the file was created using hsm_import.
753 if (((copy->hc_hai.hai_action == HSMA_ARCHIVE) ||
754 (copy->hc_hai.hai_action == HSMA_RESTORE)) &&
755 (copy->hc_errval == 0)) {
757 __u64 data_version = 0;
759 /* Get lsm for this fid */
760 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
762 hpk.hpk_flags |= HP_FLAG_RETRY;
763 /* hpk_errval must be >= 0 */
764 hpk.hpk_errval = -PTR_ERR(inode);
765 GOTO(progress, rc = PTR_ERR(inode));
768 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
771 CDEBUG(D_HSM, "Could not read file data version. "
772 "Request could not be confirmed.\n");
773 if (hpk.hpk_errval == 0)
774 hpk.hpk_errval = -rc;
778 /* Store it the hsm_copy for later copytool use.
779 * Always modified even if no lsm. */
780 hpk.hpk_data_version = data_version;
782 /* File could have been stripped during archiving, so we need
783 * to check anyway. */
784 if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) &&
785 (copy->hc_data_version != data_version)) {
786 CDEBUG(D_HSM, "File data version mismatched. "
787 "File content was changed during archiving. "
788 DFID", start:"LPX64" current:"LPX64"\n",
789 PFID(©->hc_hai.hai_fid),
790 copy->hc_data_version, data_version);
791 /* File was changed, send error to cdt. Do not ask for
792 * retry because if a file is modified frequently,
793 * the cdt will loop on retried archive requests.
794 * The policy engine will ask for a new archive later
795 * when the file will not be modified for some tunable
797 /* we do not notify caller */
798 hpk.hpk_flags &= ~HP_FLAG_RETRY;
799 /* hpk_errval must be >= 0 */
800 hpk.hpk_errval = EBUSY;
806 rc = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
813 static int copy_and_ioctl(int cmd, struct obd_export *exp,
814 const void __user *data, size_t size)
819 OBD_ALLOC(copy, size);
823 if (copy_from_user(copy, data, size)) {
828 rc = obd_iocontrol(cmd, exp, size, copy, NULL);
830 OBD_FREE(copy, size);
835 static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl)
837 int cmd = qctl->qc_cmd;
838 int type = qctl->qc_type;
839 int id = qctl->qc_id;
840 int valid = qctl->qc_valid;
845 case LUSTRE_Q_INVALIDATE:
846 case LUSTRE_Q_FINVALIDATE:
851 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
852 sbi->ll_flags & LL_SBI_RMT_CLIENT)
856 if (((type == USRQUOTA && current_euid() != id) ||
857 (type == GRPQUOTA && !in_egroup_p(id))) &&
858 (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
859 sbi->ll_flags & LL_SBI_RMT_CLIENT))
865 CERROR("unsupported quotactl op: %#x\n", cmd);
869 if (valid != QC_GENERAL) {
870 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
873 if (cmd == Q_GETINFO)
874 qctl->qc_cmd = Q_GETOINFO;
875 else if (cmd == Q_GETQUOTA)
876 qctl->qc_cmd = Q_GETOQUOTA;
882 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
883 sizeof(*qctl), qctl, NULL);
886 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp,
887 sizeof(*qctl), qctl, NULL);
890 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
891 sizeof(*qctl), qctl, NULL);
893 rc = obd_iocontrol(OBD_IOC_QUOTACTL,
895 sizeof(*qctl), qctl, NULL);
907 struct obd_quotactl *oqctl;
909 OBD_ALLOC_PTR(oqctl);
913 QCTL_COPY(oqctl, qctl);
914 rc = obd_quotactl(sbi->ll_md_exp, oqctl);
916 if (rc != -EALREADY && cmd == Q_QUOTAON) {
917 oqctl->qc_cmd = Q_QUOTAOFF;
918 obd_quotactl(sbi->ll_md_exp, oqctl);
923 /* If QIF_SPACE is not set, client should collect the
924 * space usage from OSSs by itself */
925 if (cmd == Q_GETQUOTA &&
926 !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) &&
927 !oqctl->qc_dqblk.dqb_curspace) {
928 struct obd_quotactl *oqctl_tmp;
930 OBD_ALLOC_PTR(oqctl_tmp);
931 if (oqctl_tmp == NULL)
932 GOTO(out, rc = -ENOMEM);
934 oqctl_tmp->qc_cmd = Q_GETOQUOTA;
935 oqctl_tmp->qc_id = oqctl->qc_id;
936 oqctl_tmp->qc_type = oqctl->qc_type;
938 /* collect space usage from OSTs */
939 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
940 rc = obd_quotactl(sbi->ll_dt_exp, oqctl_tmp);
941 if (!rc || rc == -EREMOTEIO) {
942 oqctl->qc_dqblk.dqb_curspace =
943 oqctl_tmp->qc_dqblk.dqb_curspace;
944 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
947 /* collect space & inode usage from MDTs */
948 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
949 oqctl_tmp->qc_dqblk.dqb_curinodes = 0;
950 rc = obd_quotactl(sbi->ll_md_exp, oqctl_tmp);
951 if (!rc || rc == -EREMOTEIO) {
952 oqctl->qc_dqblk.dqb_curspace +=
953 oqctl_tmp->qc_dqblk.dqb_curspace;
954 oqctl->qc_dqblk.dqb_curinodes =
955 oqctl_tmp->qc_dqblk.dqb_curinodes;
956 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
958 oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE;
961 OBD_FREE_PTR(oqctl_tmp);
964 QCTL_COPY(qctl, oqctl);
972 ll_getname(const char __user *filename)
975 char *tmp = __getname();
978 return ERR_PTR(-ENOMEM);
980 len = strncpy_from_user(tmp, filename, PATH_MAX);
983 else if (len > PATH_MAX)
993 #define ll_putname(filename) __putname(filename)
995 static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
997 struct inode *inode = file->f_dentry->d_inode;
998 struct ll_sb_info *sbi = ll_i2sbi(inode);
999 struct obd_ioctl_data *data;
1003 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%#x\n",
1004 PFID(ll_inode2fid(inode)), inode, cmd);
1006 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1007 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1010 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1012 case FSFILT_IOC_GETFLAGS:
1013 case FSFILT_IOC_SETFLAGS:
1014 RETURN(ll_iocontrol(inode, file, cmd, arg));
1015 case FSFILT_IOC_GETVERSION_OLD:
1016 case FSFILT_IOC_GETVERSION:
1017 RETURN(put_user(inode->i_generation, (int *)arg));
1018 /* We need to special case any other ioctls we want to handle,
1019 * to send them to the MDS/OST as appropriate and to properly
1020 * network encode the arg field.
1021 case FSFILT_IOC_SETVERSION_OLD:
1022 case FSFILT_IOC_SETVERSION:
1024 case LL_IOC_GET_MDTIDX: {
1027 mdtidx = ll_get_mdt_idx(inode);
1031 if (put_user((int)mdtidx, (int*)arg))
1036 case IOC_MDC_LOOKUP: {
1037 struct ptlrpc_request *request = NULL;
1038 int namelen, len = 0;
1041 struct md_op_data *op_data;
1043 rc = obd_ioctl_getdata(&buf, &len, (void *)arg);
1048 filename = data->ioc_inlbuf1;
1049 namelen = strlen(filename);
1052 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1053 GOTO(out_free, rc = -EINVAL);
1056 op_data = ll_prep_md_op_data(NULL, inode, NULL, filename, namelen,
1057 0, LUSTRE_OPC_ANY, NULL);
1058 if (IS_ERR(op_data))
1059 GOTO(out_free, rc = PTR_ERR(op_data));
1061 op_data->op_valid = OBD_MD_FLID;
1062 rc = md_getattr_name(sbi->ll_md_exp, op_data, &request);
1063 ll_finish_md_op_data(op_data);
1065 CDEBUG(D_INFO, "md_getattr_name: %d\n", rc);
1068 ptlrpc_req_finished(request);
1071 obd_ioctl_freedata(buf, len);
1074 case LL_IOC_LMV_SETSTRIPE: {
1075 struct lmv_user_md *lum;
1083 rc = obd_ioctl_getdata(&buf, &len, (void *)arg);
1088 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1089 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1090 GOTO(lmv_out_free, rc = -EINVAL);
1092 filename = data->ioc_inlbuf1;
1093 namelen = data->ioc_inllen1;
1096 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1097 GOTO(lmv_out_free, rc = -EINVAL);
1099 lum = (struct lmv_user_md *)data->ioc_inlbuf2;
1100 lumlen = data->ioc_inllen2;
1102 if (lum->lum_magic != LMV_USER_MAGIC ||
1103 lumlen != sizeof(*lum)) {
1104 CERROR("%s: wrong lum magic %x or size %d: rc = %d\n",
1105 filename, lum->lum_magic, lumlen, -EFAULT);
1106 GOTO(lmv_out_free, rc = -EINVAL);
1110 * ll_dir_setdirstripe will be used to set dir stripe
1111 * mdc_create--->mdt_reint_create (with dirstripe)
1113 rc = ll_dir_setdirstripe(inode, lum, filename);
1115 obd_ioctl_freedata(buf, len);
1119 case LL_IOC_LMV_SET_DEFAULT_STRIPE: {
1120 struct lmv_user_md lum;
1121 struct lmv_user_md __user *ulump =
1122 (struct lmv_user_md __user *)arg;
1125 if (copy_from_user(&lum, ulump, sizeof(lum)))
1128 if (lum.lum_magic != LMV_USER_MAGIC)
1131 rc = ll_dir_setstripe(inode, (struct lov_user_md *)&lum, 0);
1135 case LL_IOC_LOV_SETSTRIPE: {
1136 struct lov_user_md_v3 lumv3;
1137 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1138 struct lov_user_md_v1 *lumv1p = (struct lov_user_md_v1 *)arg;
1139 struct lov_user_md_v3 *lumv3p = (struct lov_user_md_v3 *)arg;
1141 int set_default = 0;
1143 LASSERT(sizeof(lumv3) == sizeof(*lumv3p));
1144 LASSERT(sizeof(lumv3.lmm_objects[0]) ==
1145 sizeof(lumv3p->lmm_objects[0]));
1146 /* first try with v1 which is smaller than v3 */
1147 if (copy_from_user(lumv1, lumv1p, sizeof(*lumv1)))
1150 if ((lumv1->lmm_magic == LOV_USER_MAGIC_V3) ) {
1151 if (copy_from_user(&lumv3, lumv3p, sizeof(lumv3)))
1155 if (inode->i_sb->s_root == file->f_dentry)
1158 /* in v1 and v3 cases lumv1 points to data */
1159 rc = ll_dir_setstripe(inode, lumv1, set_default);
1163 case LL_IOC_LMV_GETSTRIPE: {
1164 struct lmv_user_md __user *ulmv =
1165 (struct lmv_user_md __user *)arg;
1166 struct lmv_user_md lum;
1167 struct ptlrpc_request *request = NULL;
1168 union lmv_mds_md *lmm = NULL;
1170 obd_valid valid = 0;
1171 struct lmv_user_md *tmp = NULL;
1178 if (copy_from_user(&lum, ulmv, sizeof(*ulmv)))
1181 /* lum_magic will indicate which stripe the ioctl will like
1182 * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC
1183 * is for default LMV stripe */
1184 if (lum.lum_magic == LMV_MAGIC_V1)
1185 valid |= OBD_MD_MEA;
1186 else if (lum.lum_magic == LMV_USER_MAGIC)
1187 valid |= OBD_MD_DEFAULT_MEA;
1191 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, &request,
1193 if (rc != 0 && rc != -ENODATA)
1194 GOTO(finish_req, rc);
1196 /* Get default LMV EA */
1197 if (lum.lum_magic == LMV_USER_MAGIC) {
1199 GOTO(finish_req, rc);
1201 if (lmmsize > sizeof(*ulmv))
1202 GOTO(finish_req, rc = -EINVAL);
1204 if (copy_to_user(ulmv, lmm, lmmsize))
1205 GOTO(finish_req, rc = -EFAULT);
1207 GOTO(finish_req, rc);
1210 /* Get normal LMV EA */
1211 if (rc == -ENODATA) {
1214 LASSERT(lmm != NULL);
1215 stripe_count = lmv_mds_md_stripe_count_get(lmm);
1218 lum_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1219 OBD_ALLOC(tmp, lum_size);
1221 GOTO(finish_req, rc = -ENOMEM);
1223 tmp->lum_magic = LMV_MAGIC_V1;
1224 tmp->lum_stripe_count = 1;
1225 mdt_index = ll_get_mdt_idx(inode);
1227 GOTO(out_tmp, rc = -ENOMEM);
1228 tmp->lum_stripe_offset = mdt_index;
1229 tmp->lum_objects[0].lum_mds = mdt_index;
1230 tmp->lum_objects[0].lum_fid = *ll_inode2fid(inode);
1231 for (i = 1; i < stripe_count; i++) {
1232 struct lmv_mds_md_v1 *lmm1;
1234 lmm1 = &lmm->lmv_md_v1;
1235 mdt_index = ll_get_mdt_idx_by_fid(sbi,
1236 &lmm1->lmv_stripe_fids[i]);
1238 GOTO(out_tmp, rc = mdt_index);
1240 tmp->lum_objects[i].lum_mds = mdt_index;
1241 tmp->lum_objects[i].lum_fid = lmm1->lmv_stripe_fids[i];
1242 tmp->lum_stripe_count++;
1245 if (copy_to_user(ulmv, tmp, lum_size))
1246 GOTO(out_tmp, rc = -EFAULT);
1248 OBD_FREE(tmp, lum_size);
1250 ptlrpc_req_finished(request);
1254 case LL_IOC_REMOVE_ENTRY: {
1255 char *filename = NULL;
1259 /* Here is a little hack to avoid sending REINT_RMENTRY to
1260 * unsupported server, which might crash the server(LU-2730),
1261 * Because both LVB_TYPE and REINT_RMENTRY will be supported
1262 * on 2.4, we use OBD_CONNECT_LVB_TYPE to detect whether the
1263 * server will support REINT_RMENTRY XXX*/
1264 if (!(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_LVB_TYPE))
1267 filename = ll_getname((const char *)arg);
1268 if (IS_ERR(filename))
1269 RETURN(PTR_ERR(filename));
1271 namelen = strlen(filename);
1273 GOTO(out_rmdir, rc = -EINVAL);
1275 rc = ll_rmdir_entry(inode, filename, namelen);
1278 ll_putname(filename);
1281 case LL_IOC_LOV_SWAP_LAYOUTS:
1283 case LL_IOC_OBD_STATFS:
1284 RETURN(ll_obd_statfs(inode, (void *)arg));
1285 case LL_IOC_LOV_GETSTRIPE:
1286 case LL_IOC_MDC_GETINFO:
1287 case IOC_MDC_GETFILEINFO:
1288 case IOC_MDC_GETFILESTRIPE: {
1289 struct ptlrpc_request *request = NULL;
1290 struct lov_user_md *lump;
1291 struct lov_mds_md *lmm = NULL;
1292 struct mdt_body *body;
1293 char *filename = NULL;
1296 if (cmd == IOC_MDC_GETFILEINFO ||
1297 cmd == IOC_MDC_GETFILESTRIPE) {
1298 filename = ll_getname((const char *)arg);
1299 if (IS_ERR(filename))
1300 RETURN(PTR_ERR(filename));
1302 rc = ll_lov_getstripe_ea_info(inode, filename, &lmm,
1303 &lmmsize, &request);
1305 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize,
1310 body = req_capsule_server_get(&request->rq_pill,
1312 LASSERT(body != NULL);
1318 if (rc == -ENODATA && (cmd == IOC_MDC_GETFILEINFO ||
1319 cmd == LL_IOC_MDC_GETINFO))
1320 GOTO(skip_lmm, rc = 0);
1325 if (cmd == IOC_MDC_GETFILESTRIPE ||
1326 cmd == LL_IOC_LOV_GETSTRIPE) {
1327 lump = (struct lov_user_md *)arg;
1329 struct lov_user_mds_data *lmdp;
1330 lmdp = (struct lov_user_mds_data *)arg;
1331 lump = &lmdp->lmd_lmm;
1333 if (copy_to_user(lump, lmm, lmmsize)) {
1334 if (copy_to_user(lump, lmm, sizeof(*lump)))
1335 GOTO(out_req, rc = -EFAULT);
1339 if (cmd == IOC_MDC_GETFILEINFO || cmd == LL_IOC_MDC_GETINFO) {
1340 struct lov_user_mds_data *lmdp;
1343 st.st_dev = inode->i_sb->s_dev;
1344 st.st_mode = body->mode;
1345 st.st_nlink = body->nlink;
1346 st.st_uid = body->uid;
1347 st.st_gid = body->gid;
1348 st.st_rdev = body->rdev;
1349 st.st_size = body->size;
1350 st.st_blksize = PAGE_CACHE_SIZE;
1351 st.st_blocks = body->blocks;
1352 st.st_atime = body->atime;
1353 st.st_mtime = body->mtime;
1354 st.st_ctime = body->ctime;
1355 st.st_ino = inode->i_ino;
1357 lmdp = (struct lov_user_mds_data *)arg;
1358 if (copy_to_user(&lmdp->lmd_st, &st, sizeof(st)))
1359 GOTO(out_req, rc = -EFAULT);
1364 ptlrpc_req_finished(request);
1366 ll_putname(filename);
1369 case IOC_LOV_GETINFO: {
1370 struct lov_user_mds_data *lumd;
1371 struct lov_stripe_md *lsm;
1372 struct lov_user_md *lum;
1373 struct lov_mds_md *lmm;
1377 lumd = (struct lov_user_mds_data *)arg;
1378 lum = &lumd->lmd_lmm;
1380 rc = ll_get_max_mdsize(sbi, &lmmsize);
1384 OBD_ALLOC_LARGE(lmm, lmmsize);
1388 if (copy_from_user(lmm, lum, lmmsize))
1389 GOTO(free_lmm, rc = -EFAULT);
1391 switch (lmm->lmm_magic) {
1392 case LOV_USER_MAGIC_V1:
1393 if (LOV_USER_MAGIC_V1 == cpu_to_le32(LOV_USER_MAGIC_V1))
1395 /* swab objects first so that stripes num will be sane */
1396 lustre_swab_lov_user_md_objects(
1397 ((struct lov_user_md_v1 *)lmm)->lmm_objects,
1398 ((struct lov_user_md_v1 *)lmm)->lmm_stripe_count);
1399 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
1401 case LOV_USER_MAGIC_V3:
1402 if (LOV_USER_MAGIC_V3 == cpu_to_le32(LOV_USER_MAGIC_V3))
1404 /* swab objects first so that stripes num will be sane */
1405 lustre_swab_lov_user_md_objects(
1406 ((struct lov_user_md_v3 *)lmm)->lmm_objects,
1407 ((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
1408 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
1411 GOTO(free_lmm, rc = -EINVAL);
1414 rc = obd_unpackmd(sbi->ll_dt_exp, &lsm, lmm, lmmsize);
1416 GOTO(free_lmm, rc = -ENOMEM);
1418 /* Perform glimpse_size operation. */
1419 memset(&st, 0, sizeof(st));
1421 rc = ll_glimpse_ioctl(sbi, lsm, &st);
1425 if (copy_to_user(&lumd->lmd_st, &st, sizeof(st)))
1426 GOTO(free_lsm, rc = -EFAULT);
1430 obd_free_memmd(sbi->ll_dt_exp, &lsm);
1432 OBD_FREE_LARGE(lmm, lmmsize);
1435 case OBD_IOC_LLOG_CATINFO: {
1436 RETURN(-EOPNOTSUPP);
1438 case OBD_IOC_QUOTACHECK: {
1439 struct obd_quotactl *oqctl;
1442 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
1443 sbi->ll_flags & LL_SBI_RMT_CLIENT)
1446 OBD_ALLOC_PTR(oqctl);
1449 oqctl->qc_type = arg;
1450 rc = obd_quotacheck(sbi->ll_md_exp, oqctl);
1452 CDEBUG(D_INFO, "md_quotacheck failed: rc %d\n", rc);
1456 rc = obd_quotacheck(sbi->ll_dt_exp, oqctl);
1458 CDEBUG(D_INFO, "obd_quotacheck failed: rc %d\n", rc);
1460 OBD_FREE_PTR(oqctl);
1463 case OBD_IOC_POLL_QUOTACHECK: {
1464 struct if_quotacheck *check;
1466 if (!cfs_capable(CFS_CAP_SYS_ADMIN) ||
1467 sbi->ll_flags & LL_SBI_RMT_CLIENT)
1470 OBD_ALLOC_PTR(check);
1474 rc = obd_iocontrol(cmd, sbi->ll_md_exp, 0, (void *)check,
1477 CDEBUG(D_QUOTA, "mdc ioctl %d failed: %d\n", cmd, rc);
1478 if (copy_to_user((void *)arg, check,
1480 CDEBUG(D_QUOTA, "copy_to_user failed\n");
1484 rc = obd_iocontrol(cmd, sbi->ll_dt_exp, 0, (void *)check,
1487 CDEBUG(D_QUOTA, "osc ioctl %d failed: %d\n", cmd, rc);
1488 if (copy_to_user((void *)arg, check,
1490 CDEBUG(D_QUOTA, "copy_to_user failed\n");
1494 OBD_FREE_PTR(check);
1497 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0)
1498 case LL_IOC_QUOTACTL_18: {
1499 /* copy the old 1.x quota struct for internal use, then copy
1500 * back into old format struct. For 1.8 compatibility. */
1501 struct if_quotactl_18 *qctl_18;
1502 struct if_quotactl *qctl_20;
1504 OBD_ALLOC_PTR(qctl_18);
1508 OBD_ALLOC_PTR(qctl_20);
1510 GOTO(out_quotactl_18, rc = -ENOMEM);
1512 if (copy_from_user(qctl_18, (void *)arg, sizeof(*qctl_18)))
1513 GOTO(out_quotactl_20, rc = -ENOMEM);
1515 QCTL_COPY(qctl_20, qctl_18);
1516 qctl_20->qc_idx = 0;
1518 /* XXX: dqb_valid was borrowed as a flag to mark that
1519 * only mds quota is wanted */
1520 if (qctl_18->qc_cmd == Q_GETQUOTA &&
1521 qctl_18->qc_dqblk.dqb_valid) {
1522 qctl_20->qc_valid = QC_MDTIDX;
1523 qctl_20->qc_dqblk.dqb_valid = 0;
1524 } else if (qctl_18->obd_uuid.uuid[0] != '\0') {
1525 qctl_20->qc_valid = QC_UUID;
1526 qctl_20->obd_uuid = qctl_18->obd_uuid;
1528 qctl_20->qc_valid = QC_GENERAL;
1531 rc = quotactl_ioctl(sbi, qctl_20);
1534 QCTL_COPY(qctl_18, qctl_20);
1535 qctl_18->obd_uuid = qctl_20->obd_uuid;
1537 if (copy_to_user((void *)arg, qctl_18,
1543 OBD_FREE_PTR(qctl_20);
1545 OBD_FREE_PTR(qctl_18);
1549 #warning "remove old LL_IOC_QUOTACTL_18 compatibility code"
1550 #endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 7, 50, 0) */
1551 case LL_IOC_QUOTACTL: {
1552 struct if_quotactl *qctl;
1554 OBD_ALLOC_PTR(qctl);
1558 if (copy_from_user(qctl, (void *)arg, sizeof(*qctl)))
1559 GOTO(out_quotactl, rc = -EFAULT);
1561 rc = quotactl_ioctl(sbi, qctl);
1563 if (rc == 0 && copy_to_user((void *)arg, qctl, sizeof(*qctl)))
1570 case OBD_IOC_GETDTNAME:
1571 case OBD_IOC_GETMDNAME:
1572 RETURN(ll_get_obd_name(inode, cmd, arg));
1573 case LL_IOC_FLUSHCTX:
1574 RETURN(ll_flush_ctx(inode));
1575 #ifdef CONFIG_FS_POSIX_ACL
1576 case LL_IOC_RMTACL: {
1577 if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
1578 inode == inode->i_sb->s_root->d_inode) {
1579 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1581 LASSERT(fd != NULL);
1582 rc = rct_add(&sbi->ll_rct, current_pid(), arg);
1584 fd->fd_flags |= LL_FILE_RMTACL;
1590 case LL_IOC_GETOBDCOUNT: {
1592 struct obd_export *exp;
1594 if (copy_from_user(&count, (int *)arg, sizeof(int)))
1597 /* get ost count when count is zero, get mdt count otherwise */
1598 exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp;
1599 vallen = sizeof(count);
1600 rc = obd_get_info(NULL, exp, sizeof(KEY_TGT_COUNT),
1601 KEY_TGT_COUNT, &vallen, &count, NULL);
1603 CERROR("get target count failed: %d\n", rc);
1607 if (copy_to_user((int *)arg, &count, sizeof(int)))
1612 case LL_IOC_PATH2FID:
1613 if (copy_to_user((void *)arg, ll_inode2fid(inode),
1614 sizeof(struct lu_fid)))
1617 case LL_IOC_GET_CONNECT_FLAGS: {
1618 RETURN(obd_iocontrol(cmd, sbi->ll_md_exp, 0, NULL, (void*)arg));
1620 case OBD_IOC_CHANGELOG_SEND:
1621 case OBD_IOC_CHANGELOG_CLEAR:
1622 rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void *)arg,
1623 sizeof(struct ioc_changelog));
1625 case OBD_IOC_FID2PATH:
1626 RETURN(ll_fid2path(inode, (void *)arg));
1627 case LL_IOC_HSM_REQUEST: {
1628 struct hsm_user_request *hur;
1635 /* We don't know the true size yet; copy the fixed-size part */
1636 if (copy_from_user(hur, (void *)arg, sizeof(*hur))) {
1641 /* Compute the whole struct size */
1642 totalsize = hur_len(hur);
1645 /* Make sure the size is reasonable */
1646 if (totalsize >= MDS_MAXREQSIZE)
1649 OBD_ALLOC_LARGE(hur, totalsize);
1653 /* Copy the whole struct */
1654 if (copy_from_user(hur, (void *)arg, totalsize)) {
1655 OBD_FREE_LARGE(hur, totalsize);
1659 if (hur->hur_request.hr_action == HUA_RELEASE) {
1660 const struct lu_fid *fid;
1664 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
1665 fid = &hur->hur_user_item[i].hui_fid;
1666 f = search_inode_for_lustre(inode->i_sb, fid);
1672 rc = ll_hsm_release(f);
1678 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), totalsize,
1682 OBD_FREE_LARGE(hur, totalsize);
1686 case LL_IOC_HSM_PROGRESS: {
1687 struct hsm_progress_kernel hpk;
1688 struct hsm_progress hp;
1690 if (copy_from_user(&hp, (void *)arg, sizeof(hp)))
1693 hpk.hpk_fid = hp.hp_fid;
1694 hpk.hpk_cookie = hp.hp_cookie;
1695 hpk.hpk_extent = hp.hp_extent;
1696 hpk.hpk_flags = hp.hp_flags;
1697 hpk.hpk_errval = hp.hp_errval;
1698 hpk.hpk_data_version = 0;
1700 /* File may not exist in Lustre; all progress
1701 * reported to Lustre root */
1702 rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk,
1706 case LL_IOC_HSM_CT_START:
1707 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1710 rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void *)arg,
1711 sizeof(struct lustre_kernelcomm));
1714 case LL_IOC_HSM_COPY_START: {
1715 struct hsm_copy *copy;
1718 OBD_ALLOC_PTR(copy);
1721 if (copy_from_user(copy, (char *)arg, sizeof(*copy))) {
1726 rc = ll_ioc_copy_start(inode->i_sb, copy);
1727 if (copy_to_user((char *)arg, copy, sizeof(*copy)))
1733 case LL_IOC_HSM_COPY_END: {
1734 struct hsm_copy *copy;
1737 OBD_ALLOC_PTR(copy);
1740 if (copy_from_user(copy, (char *)arg, sizeof(*copy))) {
1745 rc = ll_ioc_copy_end(inode->i_sb, copy);
1746 if (copy_to_user((char *)arg, copy, sizeof(*copy)))
1753 RETURN(obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL,
1758 static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
1760 struct inode *inode = file->f_mapping->host;
1761 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1762 struct ll_sb_info *sbi = ll_i2sbi(inode);
1763 int api32 = ll_need_32bit_api(sbi);
1764 loff_t ret = -EINVAL;
1767 mutex_lock(&inode->i_mutex);
1772 offset += file->f_pos;
1778 offset += LL_DIR_END_OFF_32BIT;
1780 offset += LL_DIR_END_OFF;
1787 ((api32 && offset <= LL_DIR_END_OFF_32BIT) ||
1788 (!api32 && offset <= LL_DIR_END_OFF))) {
1789 if (offset != file->f_pos) {
1790 if ((api32 && offset == LL_DIR_END_OFF_32BIT) ||
1791 (!api32 && offset == LL_DIR_END_OFF))
1792 fd->lfd_pos = MDS_DIR_END_OFF;
1793 else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH)
1794 fd->lfd_pos = offset << 32;
1796 fd->lfd_pos = offset;
1797 file->f_pos = offset;
1798 file->f_version = 0;
1805 mutex_unlock(&inode->i_mutex);
1809 int ll_dir_open(struct inode *inode, struct file *file)
1812 RETURN(ll_file_open(inode, file));
1815 int ll_dir_release(struct inode *inode, struct file *file)
1818 RETURN(ll_file_release(inode, file));
1821 struct file_operations ll_dir_operations = {
1822 .llseek = ll_dir_seek,
1823 .open = ll_dir_open,
1824 .release = ll_dir_release,
1825 .read = generic_read_dir,
1826 .readdir = ll_readdir,
1827 .unlocked_ioctl = ll_dir_ioctl,