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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
34 * Directory code for lustre client.
38 #include <linux/pagemap.h>
40 #include <linux/version.h>
41 #include <linux/security.h>
42 #include <linux/user_namespace.h>
43 #include <linux/uidgid.h>
44 #include <linux/uaccess.h>
45 #include <linux/buffer_head.h> // for wait_on_buffer
46 #include <linux/pagevec.h>
48 #define DEBUG_SUBSYSTEM S_LLITE
50 #include <obd_support.h>
51 #include <obd_class.h>
52 #include <uapi/linux/lustre/lustre_ioctl.h>
53 #include <lustre_lib.h>
54 #include <lustre_dlm.h>
55 #include <lustre_fid.h>
56 #include <lustre_kernelcomm.h>
57 #include <lustre_swab.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_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
138 * lu_dirpage for this integrated page will be adjusted. See
139 * mdc_adjust_dirpages().
142 struct page *ll_get_dir_page(struct inode *dir, struct md_op_data *op_data,
143 __u64 offset, struct ll_dir_chain *chain)
145 struct md_callback cb_op;
149 cb_op.md_blocking_ast = ll_md_blocking_ast;
150 rc = md_read_page(ll_i2mdexp(dir), op_data, &cb_op, offset, &page);
157 void ll_release_page(struct inode *inode, struct page *page,
162 /* Always remove the page for striped dir, because the page is
163 * built from temporarily in LMV layer */
164 if (inode && ll_dir_striped(inode)) {
171 if (likely(page->mapping != NULL))
172 delete_from_page_cache(page);
178 #ifdef HAVE_DIR_CONTEXT
179 int ll_dir_read(struct inode *inode, __u64 *ppos, struct md_op_data *op_data,
180 struct dir_context *ctx)
183 int ll_dir_read(struct inode *inode, __u64 *ppos, struct md_op_data *op_data,
184 void *cookie, filldir_t filldir)
187 struct ll_sb_info *sbi = ll_i2sbi(inode);
189 bool is_api32 = ll_need_32bit_api(sbi);
190 bool is_hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
192 struct ll_dir_chain chain;
197 ll_dir_chain_init(&chain);
199 page = ll_get_dir_page(inode, op_data, pos, &chain);
201 while (rc == 0 && !done) {
202 struct lu_dirpage *dp;
203 struct lu_dirent *ent;
212 hash = MDS_DIR_END_OFF;
213 dp = page_address(page);
214 for (ent = lu_dirent_start(dp); ent != NULL && !done;
215 ent = lu_dirent_next(ent)) {
222 hash = le64_to_cpu(ent->lde_hash);
223 if (hash < pos) /* Skip until we find target hash */
226 namelen = le16_to_cpu(ent->lde_namelen);
227 if (namelen == 0) /* Skip dummy record */
230 if (is_api32 && is_hash64)
234 fid_le_to_cpu(&fid, &ent->lde_fid);
235 ino = cl_fid_build_ino(&fid, is_api32);
236 type = IFTODT(lu_dirent_type_get(ent));
237 /* For ll_nfs_get_name_filldir(), it will try to access
238 * 'ent' through 'lde_name', so the parameter 'name'
239 * for 'filldir()' must be part of the 'ent'. */
240 #ifdef HAVE_DIR_CONTEXT
242 done = !dir_emit(ctx, ent->lde_name, namelen, ino,
245 done = filldir(cookie, ent->lde_name, namelen, lhash,
252 ll_release_page(inode, page, false);
256 next = le64_to_cpu(dp->ldp_hash_end);
258 if (pos == MDS_DIR_END_OFF) {
260 * End of directory reached.
263 ll_release_page(inode, page, false);
266 * Normal case: continue to the next
269 ll_release_page(inode, page,
270 le32_to_cpu(dp->ldp_flags) &
273 page = ll_get_dir_page(inode, op_data, pos,
277 #ifdef HAVE_DIR_CONTEXT
282 ll_dir_chain_fini(&chain);
286 #ifdef HAVE_DIR_CONTEXT
287 static int ll_iterate(struct file *filp, struct dir_context *ctx)
289 static int ll_readdir(struct file *filp, void *cookie, filldir_t filldir)
292 struct inode *inode = file_inode(filp);
293 struct ll_file_data *lfd = filp->private_data;
294 struct ll_sb_info *sbi = ll_i2sbi(inode);
295 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
296 int api32 = ll_need_32bit_api(sbi);
297 struct md_op_data *op_data;
298 struct lu_fid pfid = { 0 };
299 ktime_t kstart = ktime_get();
310 "VFS Op:inode="DFID"(%p) pos/size%lu/%llu 32bit_api %d\n",
311 PFID(ll_inode2fid(inode)),
312 inode, (unsigned long)pos, i_size_read(inode), api32);
314 if (pos == MDS_DIR_END_OFF)
320 if (unlikely(ll_dir_striped(inode))) {
322 * This is only needed for striped dir to fill ..,
323 * see lmv_read_page()
325 if (file_dentry(filp)->d_parent != NULL &&
326 file_dentry(filp)->d_parent->d_inode != NULL) {
327 __u64 ibits = MDS_INODELOCK_LOOKUP;
328 struct inode *parent =
329 file_dentry(filp)->d_parent->d_inode;
331 if (ll_have_md_lock(parent, &ibits, LCK_MINMODE))
332 pfid = *ll_inode2fid(parent);
335 /* If it can not find in cache, do lookup .. on the master
337 if (fid_is_zero(&pfid)) {
338 rc = ll_dir_get_parent_fid(inode, &pfid);
344 op_data = ll_prep_md_op_data(NULL, inode, inode, NULL, 0, 0,
345 LUSTRE_OPC_ANY, inode);
347 GOTO(out, rc = PTR_ERR(op_data));
349 /* foreign dirs are browsed out of Lustre */
350 if (unlikely(op_data->op_mea1 != NULL &&
351 op_data->op_mea1->lsm_md_magic == LMV_MAGIC_FOREIGN)) {
352 ll_finish_md_op_data(op_data);
356 op_data->op_fid3 = pfid;
358 #ifdef HAVE_DIR_CONTEXT
360 rc = ll_dir_read(inode, &pos, op_data, ctx);
363 rc = ll_dir_read(inode, &pos, op_data, cookie, filldir);
368 if (pos == MDS_DIR_END_OFF) {
370 pos = LL_DIR_END_OFF_32BIT;
372 pos = LL_DIR_END_OFF;
377 #ifdef HAVE_DIR_CONTEXT
382 ll_finish_md_op_data(op_data);
386 ll_stats_ops_tally(sbi, LPROC_LL_READDIR,
387 ktime_us_delta(ktime_get(), kstart));
393 * Create striped directory with specified stripe(@lump)
395 * \param[in] dparent the parent of the directory.
396 * \param[in] lump the specified stripes.
397 * \param[in] dirname the name of the directory.
398 * \param[in] mode the specified mode of the directory.
400 * \retval =0 if striped directory is being created successfully.
401 * <0 if the creation is failed.
403 static int ll_dir_setdirstripe(struct dentry *dparent, struct lmv_user_md *lump,
404 size_t len, const char *dirname, umode_t mode)
406 struct inode *parent = dparent->d_inode;
407 struct ptlrpc_request *request = NULL;
408 struct md_op_data *op_data;
409 struct ll_sb_info *sbi = ll_i2sbi(parent);
410 struct inode *inode = NULL;
411 struct dentry dentry = {
415 .len = strlen(dirname),
416 .hash = ll_full_name_hash(dparent, dirname,
420 bool encrypt = false;
424 if (unlikely(!lmv_user_magic_supported(lump->lum_magic)))
427 if (lump->lum_magic != LMV_MAGIC_FOREIGN) {
429 "VFS Op:inode="DFID"(%p) name %s stripe_offset %d, stripe_count: %u\n",
430 PFID(ll_inode2fid(parent)), parent, dirname,
431 (int)lump->lum_stripe_offset, lump->lum_stripe_count);
433 struct lmv_foreign_md *lfm = (struct lmv_foreign_md *)lump;
436 "VFS Op:inode="DFID"(%p) name %s foreign, length %u, value '%.*s'\n",
437 PFID(ll_inode2fid(parent)), parent, dirname,
438 lfm->lfm_length, lfm->lfm_length, lfm->lfm_value);
441 if (lump->lum_stripe_count > 1 &&
442 !(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_DIR_STRIPE))
445 if (IS_DEADDIR(parent) &&
446 !OBD_FAIL_CHECK(OBD_FAIL_LLITE_NO_CHECK_DEAD))
449 if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_CRUSH)) {
450 if ((lump->lum_hash_type & LMV_HASH_TYPE_MASK) ==
451 LMV_HASH_TYPE_CRUSH) {
452 /* if server doesn't support 'crush' hash type,
453 * switch to fnv_1a_64.
455 lump->lum_hash_type &= ~LMV_HASH_TYPE_MASK;
456 lump->lum_hash_type |= LMV_HASH_TYPE_FNV_1A_64;
457 } else if ((lump->lum_hash_type & LMV_HASH_TYPE_MASK) ==
458 LMV_HASH_TYPE_UNKNOWN) {
459 /* from 2.14 MDT will choose default hash type if client
460 * doesn't set a valid one, while old server doesn't
463 lump->lum_hash_type &= ~LMV_HASH_TYPE_MASK;
464 lump->lum_hash_type |= LMV_HASH_TYPE_DEFAULT;
468 if (unlikely(!lmv_user_magic_supported(cpu_to_le32(lump->lum_magic))))
469 lustre_swab_lmv_user_md(lump);
471 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
472 mode &= ~current_umask();
473 mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
474 op_data = ll_prep_md_op_data(NULL, parent, NULL, dirname,
475 strlen(dirname), mode, LUSTRE_OPC_MKDIR,
478 RETURN(PTR_ERR(op_data));
480 if (IS_ENCRYPTED(parent) ||
481 unlikely(llcrypt_dummy_context_enabled(parent))) {
482 err = llcrypt_get_encryption_info(parent);
484 GOTO(out_op_data, err);
485 if (!llcrypt_has_encryption_key(parent))
486 GOTO(out_op_data, err = -ENOKEY);
490 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
491 /* selinux_dentry_init_security() uses dentry->d_parent and name
492 * to determine the security context for the file. So our fake
493 * dentry should be real enough for this purpose. */
494 err = ll_dentry_init_security(&dentry, mode, &dentry.d_name,
495 &op_data->op_file_secctx_name,
496 &op_data->op_file_secctx,
497 &op_data->op_file_secctx_size);
499 GOTO(out_op_data, err);
502 op_data->op_cli_flags |= CLI_SET_MEA;
503 err = md_create(sbi->ll_md_exp, op_data, lump, len, mode,
504 from_kuid(&init_user_ns, current_fsuid()),
505 from_kgid(&init_user_ns, current_fsgid()),
506 cfs_curproc_cap_pack(), 0, &request);
508 GOTO(out_request, err);
510 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_SETDIRSTRIPE_PAUSE, cfs_fail_val);
512 err = ll_prep_inode(&inode, request, parent->i_sb, NULL);
514 GOTO(out_inode, err);
516 dentry.d_inode = inode;
518 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
520 err = security_inode_notifysecctx(inode,
521 op_data->op_file_secctx,
522 op_data->op_file_secctx_size);
525 err = ll_inode_init_security(&dentry, inode, parent);
528 GOTO(out_inode, err);
531 err = llcrypt_inherit_context(parent, inode, NULL, false);
533 GOTO(out_inode, err);
540 ptlrpc_req_finished(request);
542 ll_finish_md_op_data(op_data);
547 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
550 struct ll_sb_info *sbi = ll_i2sbi(inode);
551 struct md_op_data *op_data;
552 struct ptlrpc_request *req = NULL;
558 switch (lump->lmm_magic) {
559 case LOV_USER_MAGIC_V1:
560 lum_size = sizeof(struct lov_user_md_v1);
562 case LOV_USER_MAGIC_V3:
563 lum_size = sizeof(struct lov_user_md_v3);
565 case LOV_USER_MAGIC_COMP_V1:
566 lum_size = ((struct lov_comp_md_v1 *)lump)->lcm_size;
569 if (lump->lmm_magic != cpu_to_le32(LMV_USER_MAGIC))
570 lustre_swab_lmv_user_md(
571 (struct lmv_user_md *)lump);
572 lum_size = sizeof(struct lmv_user_md);
574 case LOV_USER_MAGIC_SPECIFIC: {
575 struct lov_user_md_v3 *v3 =
576 (struct lov_user_md_v3 *)lump;
577 if (v3->lmm_stripe_count > LOV_MAX_STRIPE_COUNT)
579 lum_size = lov_user_md_size(v3->lmm_stripe_count,
580 LOV_USER_MAGIC_SPECIFIC);
584 CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
585 " %#08x != %#08x nor %#08x\n",
586 lump->lmm_magic, LOV_USER_MAGIC_V1,
592 * This is coming from userspace, so should be in
593 * local endian. But the MDS would like it in little
594 * endian, so we swab it before we send it.
596 if ((__swab32(lump->lmm_magic) & le32_to_cpu(LOV_MAGIC_MASK)) ==
597 le32_to_cpu(LOV_MAGIC_MAGIC))
598 lustre_swab_lov_user_md(lump, 0);
600 lum_size = sizeof(struct lov_user_md_v1);
603 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
604 LUSTRE_OPC_ANY, NULL);
606 RETURN(PTR_ERR(op_data));
608 /* swabbing is done in lov_setstripe() on server side */
609 rc = md_setattr(sbi->ll_md_exp, op_data, lump, lum_size, &req);
610 ll_finish_md_op_data(op_data);
611 ptlrpc_req_finished(req);
618 static int ll_dir_get_default_layout(struct inode *inode, void **plmm,
620 struct ptlrpc_request **request, u64 valid,
621 enum get_default_layout_type type)
623 struct ll_sb_info *sbi = ll_i2sbi(inode);
624 struct mdt_body *body;
625 struct lov_mds_md *lmm = NULL;
626 struct ptlrpc_request *req = NULL;
628 struct md_op_data *op_data;
632 rc = ll_get_default_mdsize(sbi, &lmm_size);
636 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
637 0, lmm_size, LUSTRE_OPC_ANY,
640 RETURN(PTR_ERR(op_data));
642 op_data->op_valid = valid | OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
644 if (type == GET_DEFAULT_LAYOUT_ROOT) {
645 lu_root_fid(&op_data->op_fid1);
646 fid = op_data->op_fid1;
648 fid = *ll_inode2fid(inode);
651 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
652 ll_finish_md_op_data(op_data);
654 CDEBUG(D_INFO, "md_getattr failed on inode "DFID": rc %d\n",
659 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
660 LASSERT(body != NULL);
662 lmm_size = body->mbo_eadatasize;
664 if (!(body->mbo_valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
666 GOTO(out, rc = -ENODATA);
669 lmm = req_capsule_server_sized_get(&req->rq_pill,
670 &RMF_MDT_MD, lmm_size);
671 LASSERT(lmm != NULL);
674 * This is coming from the MDS, so is probably in
675 * little endian. We convert it to host endian before
676 * passing it to userspace.
678 /* We don't swab objects for directories */
679 switch (le32_to_cpu(lmm->lmm_magic)) {
682 case LOV_MAGIC_COMP_V1:
683 case LOV_USER_MAGIC_SPECIFIC:
684 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
685 lustre_swab_lov_user_md((struct lov_user_md *)lmm, 0);
688 if (LMV_MAGIC != cpu_to_le32(LMV_MAGIC))
689 lustre_swab_lmv_mds_md((union lmv_mds_md *)lmm);
692 if (LMV_USER_MAGIC != cpu_to_le32(LMV_USER_MAGIC))
693 lustre_swab_lmv_user_md((struct lmv_user_md *)lmm);
695 case LMV_MAGIC_FOREIGN: {
696 struct lmv_foreign_md *lfm = (struct lmv_foreign_md *)lmm;
698 if (LMV_MAGIC_FOREIGN != cpu_to_le32(LMV_MAGIC_FOREIGN)) {
699 __swab32s(&lfm->lfm_magic);
700 __swab32s(&lfm->lfm_length);
701 __swab32s(&lfm->lfm_type);
702 __swab32s(&lfm->lfm_flags);
707 CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic);
712 *plmm_size = lmm_size;
718 * This function will be used to get default LOV/LMV/Default LMV
719 * @valid will be used to indicate which stripe it will retrieve.
720 * If the directory does not have its own default layout, then the
721 * function will request the default layout from root FID.
722 * OBD_MD_MEA LMV stripe EA
723 * OBD_MD_DEFAULT_MEA Default LMV stripe EA
724 * otherwise Default LOV EA.
725 * Each time, it can only retrieve 1 stripe EA
727 int ll_dir_getstripe_default(struct inode *inode, void **plmm, int *plmm_size,
728 struct ptlrpc_request **request,
729 struct ptlrpc_request **root_request,
732 struct ptlrpc_request *req = NULL;
733 struct ptlrpc_request *root_req = NULL;
734 struct lov_mds_md *lmm = NULL;
739 rc = ll_dir_get_default_layout(inode, (void **)&lmm, &lmm_size,
741 if (rc == -ENODATA && !fid_is_root(ll_inode2fid(inode)) &&
742 !(valid & (OBD_MD_MEA|OBD_MD_DEFAULT_MEA)) && root_request != NULL)
743 rc = ll_dir_get_default_layout(inode, (void **)&lmm, &lmm_size,
745 GET_DEFAULT_LAYOUT_ROOT);
748 *plmm_size = lmm_size;
750 if (root_request != NULL)
751 *root_request = root_req;
757 * This function will be used to get default LOV/LMV/Default LMV
758 * @valid will be used to indicate which stripe it will retrieve
759 * OBD_MD_MEA LMV stripe EA
760 * OBD_MD_DEFAULT_MEA Default LMV stripe EA
761 * otherwise Default LOV EA.
762 * Each time, it can only retrieve 1 stripe EA
764 int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size,
765 struct ptlrpc_request **request, u64 valid)
767 struct ptlrpc_request *req = NULL;
768 struct lov_mds_md *lmm = NULL;
773 rc = ll_dir_get_default_layout(inode, (void **)&lmm, &lmm_size,
777 *plmm_size = lmm_size;
783 int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid)
785 struct md_op_data *op_data;
790 OBD_ALLOC_PTR(op_data);
794 op_data->op_flags |= MF_GET_MDT_IDX;
795 op_data->op_fid1 = *fid;
796 rc = md_getattr(sbi->ll_md_exp, op_data, NULL);
797 mdt_index = op_data->op_mds;
798 OBD_FREE_PTR(op_data);
806 * Get MDT index for the inode.
808 int ll_get_mdt_idx(struct inode *inode)
810 return ll_get_mdt_idx_by_fid(ll_i2sbi(inode), ll_inode2fid(inode));
814 * Generic handler to do any pre-copy work.
816 * It sends a first hsm_progress (with extent length == 0) to coordinator as a
817 * first information for it that real work has started.
819 * Moreover, for a ARCHIVE request, it will sample the file data version and
820 * store it in \a copy.
822 * \return 0 on success.
824 static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy)
826 struct ll_sb_info *sbi = ll_s2sbi(sb);
827 struct hsm_progress_kernel hpk;
832 /* Forge a hsm_progress based on data from copy. */
833 hpk.hpk_fid = copy->hc_hai.hai_fid;
834 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
835 hpk.hpk_extent.offset = copy->hc_hai.hai_extent.offset;
836 hpk.hpk_extent.length = 0;
839 hpk.hpk_data_version = 0;
842 /* For archive request, we need to read the current file version. */
843 if (copy->hc_hai.hai_action == HSMA_ARCHIVE) {
845 __u64 data_version = 0;
847 /* Get inode for this fid */
848 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
850 hpk.hpk_flags |= HP_FLAG_RETRY;
851 /* hpk_errval is >= 0 */
852 hpk.hpk_errval = -PTR_ERR(inode);
853 GOTO(progress, rc = PTR_ERR(inode));
856 /* Read current file data version */
857 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
860 CDEBUG(D_HSM, "Could not read file data version of "
861 DFID" (rc = %d). Archive request ("
862 "%#llx) could not be done.\n",
863 PFID(©->hc_hai.hai_fid), rc,
864 copy->hc_hai.hai_cookie);
865 hpk.hpk_flags |= HP_FLAG_RETRY;
866 /* hpk_errval must be >= 0 */
867 hpk.hpk_errval = -rc;
871 /* Store in the hsm_copy for later copytool use.
872 * Always modified even if no lsm. */
873 copy->hc_data_version = data_version;
877 /* On error, the request should be considered as completed */
878 if (hpk.hpk_errval > 0)
879 hpk.hpk_flags |= HP_FLAG_COMPLETED;
881 rc2 = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
884 /* Return first error */
885 RETURN(rc != 0 ? rc : rc2);
889 * Generic handler to do any post-copy work.
891 * It will send the last hsm_progress update to coordinator to inform it
892 * that copy is finished and whether it was successful or not.
895 * - for ARCHIVE request, it will sample the file data version and compare it
896 * with the version saved in ll_ioc_copy_start(). If they do not match, copy
897 * will be considered as failed.
898 * - for RESTORE request, it will sample the file data version and send it to
899 * coordinator which is useful if the file was imported as 'released'.
901 * \return 0 on success.
903 static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
905 struct ll_sb_info *sbi = ll_s2sbi(sb);
906 struct hsm_progress_kernel hpk;
911 /* If you modify the logic here, also check llapi_hsm_copy_end(). */
912 /* Take care: copy->hc_hai.hai_action, len, gid and data are not
913 * initialized if copy_end was called with copy == NULL.
916 /* Forge a hsm_progress based on data from copy. */
917 hpk.hpk_fid = copy->hc_hai.hai_fid;
918 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
919 hpk.hpk_extent = copy->hc_hai.hai_extent;
920 hpk.hpk_flags = copy->hc_flags | HP_FLAG_COMPLETED;
921 hpk.hpk_errval = copy->hc_errval;
922 hpk.hpk_data_version = 0;
924 /* For archive request, we need to check the file data was not changed.
926 * For restore request, we need to send the file data version, this is
927 * useful when the file was created using hsm_import.
929 if (((copy->hc_hai.hai_action == HSMA_ARCHIVE) ||
930 (copy->hc_hai.hai_action == HSMA_RESTORE)) &&
931 (copy->hc_errval == 0)) {
933 __u64 data_version = 0;
935 /* Get lsm for this fid */
936 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
938 hpk.hpk_flags |= HP_FLAG_RETRY;
939 /* hpk_errval must be >= 0 */
940 hpk.hpk_errval = -PTR_ERR(inode);
941 GOTO(progress, rc = PTR_ERR(inode));
944 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
947 CDEBUG(D_HSM, "Could not read file data version. "
948 "Request could not be confirmed.\n");
949 if (hpk.hpk_errval == 0)
950 hpk.hpk_errval = -rc;
954 /* Store in the hsm_copy for later copytool use.
955 * Always modified even if no lsm. */
956 hpk.hpk_data_version = data_version;
958 /* File could have been stripped during archiving, so we need
959 * to check anyway. */
960 if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) &&
961 (copy->hc_data_version != data_version)) {
962 CDEBUG(D_HSM, "File data version mismatched. "
963 "File content was changed during archiving. "
964 DFID", start:%#llx current:%#llx\n",
965 PFID(©->hc_hai.hai_fid),
966 copy->hc_data_version, data_version);
967 /* File was changed, send error to cdt. Do not ask for
968 * retry because if a file is modified frequently,
969 * the cdt will loop on retried archive requests.
970 * The policy engine will ask for a new archive later
971 * when the file will not be modified for some tunable
973 hpk.hpk_flags &= ~HP_FLAG_RETRY;
975 /* hpk_errval must be >= 0 */
976 hpk.hpk_errval = -rc;
983 rc2 = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
986 /* Return first error */
987 RETURN(rc != 0 ? rc : rc2);
991 static int copy_and_ct_start(int cmd, struct obd_export *exp,
992 const struct lustre_kernelcomm __user *data)
994 struct lustre_kernelcomm *lk;
995 struct lustre_kernelcomm *tmp;
996 size_t size = sizeof(*lk);
1001 /* copy data from userspace to get numbers of archive_id */
1002 OBD_ALLOC(lk, size);
1006 if (copy_from_user(lk, data, size))
1007 GOTO(out_lk, rc = -EFAULT);
1009 if (lk->lk_flags & LK_FLG_STOP)
1012 if (!(lk->lk_flags & LK_FLG_DATANR)) {
1013 __u32 archive_mask = lk->lk_data_count;
1016 /* old hsm agent to old MDS */
1017 if (!exp_connect_archive_id_array(exp))
1020 /* old hsm agent to new MDS */
1021 lk->lk_flags |= LK_FLG_DATANR;
1023 if (archive_mask == 0)
1026 count = hweight32(archive_mask);
1027 new_size = offsetof(struct lustre_kernelcomm, lk_data[count]);
1028 OBD_ALLOC(tmp, new_size);
1030 GOTO(out_lk, rc = -ENOMEM);
1032 memcpy(tmp, lk, size);
1033 tmp->lk_data_count = count;
1039 for (i = 0; i < sizeof(archive_mask) * 8; i++) {
1040 if (BIT(i) & archive_mask) {
1041 lk->lk_data[count] = i + 1;
1048 /* new hsm agent to new mds */
1049 if (lk->lk_data_count > 0) {
1050 new_size = offsetof(struct lustre_kernelcomm,
1051 lk_data[lk->lk_data_count]);
1052 OBD_ALLOC(tmp, new_size);
1054 GOTO(out_lk, rc = -ENOMEM);
1060 if (copy_from_user(lk, data, size))
1061 GOTO(out_lk, rc = -EFAULT);
1064 /* new hsm agent to old MDS */
1065 if (!exp_connect_archive_id_array(exp)) {
1068 if (lk->lk_data_count > LL_HSM_ORIGIN_MAX_ARCHIVE)
1069 GOTO(out_lk, rc = -EINVAL);
1071 for (i = 0; i < lk->lk_data_count; i++) {
1072 if (lk->lk_data[i] > LL_HSM_ORIGIN_MAX_ARCHIVE) {
1074 CERROR("%s: archive id %d requested but only "
1075 "[0 - %zu] supported: rc = %d\n",
1076 exp->exp_obd->obd_name, lk->lk_data[i],
1077 LL_HSM_ORIGIN_MAX_ARCHIVE, rc);
1081 if (lk->lk_data[i] == 0) {
1086 archives |= (1 << (lk->lk_data[i] - 1));
1088 lk->lk_flags &= ~LK_FLG_DATANR;
1089 lk->lk_data_count = archives;
1092 rc = obd_iocontrol(cmd, exp, size, lk, NULL);
1098 static int check_owner(int type, int id)
1102 if (!uid_eq(current_euid(), make_kuid(&init_user_ns, id)))
1106 if (!in_egroup_p(make_kgid(&init_user_ns, id)))
1115 static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl)
1117 int cmd = qctl->qc_cmd;
1118 int type = qctl->qc_type;
1119 int id = qctl->qc_id;
1120 int valid = qctl->qc_valid;
1127 case LUSTRE_Q_SETDEFAULT:
1128 case LUSTRE_Q_SETQUOTAPOOL:
1129 case LUSTRE_Q_SETINFOPOOL:
1130 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1134 case LUSTRE_Q_GETDEFAULT:
1135 case LUSTRE_Q_GETQUOTAPOOL:
1136 if (check_owner(type, id) &&
1137 (!cfs_capable(CFS_CAP_SYS_ADMIN)))
1141 case LUSTRE_Q_GETINFOPOOL:
1144 CERROR("unsupported quotactl op: %#x\n", cmd);
1148 if (valid != QC_GENERAL) {
1149 if (cmd == Q_GETINFO)
1150 qctl->qc_cmd = Q_GETOINFO;
1151 else if (cmd == Q_GETQUOTA ||
1152 cmd == LUSTRE_Q_GETQUOTAPOOL)
1153 qctl->qc_cmd = Q_GETOQUOTA;
1159 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
1160 sizeof(*qctl), qctl, NULL);
1163 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp,
1164 sizeof(*qctl), qctl, NULL);
1167 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
1168 sizeof(*qctl), qctl, NULL);
1170 rc = obd_iocontrol(OBD_IOC_QUOTACTL,
1172 sizeof(*qctl), qctl, NULL);
1184 struct obd_quotactl *oqctl;
1185 int oqctl_len = sizeof(*oqctl);
1187 if (LUSTRE_Q_CMD_IS_POOL(cmd))
1188 oqctl_len += LOV_MAXPOOLNAME + 1;
1190 OBD_ALLOC(oqctl, oqctl_len);
1194 QCTL_COPY(oqctl, qctl);
1195 rc = obd_quotactl(sbi->ll_md_exp, oqctl);
1197 OBD_FREE(oqctl, oqctl_len);
1200 /* If QIF_SPACE is not set, client should collect the
1201 * space usage from OSSs by itself */
1202 if ((cmd == Q_GETQUOTA || cmd == LUSTRE_Q_GETQUOTAPOOL) &&
1203 !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) &&
1204 !oqctl->qc_dqblk.dqb_curspace) {
1205 struct obd_quotactl *oqctl_tmp;
1207 OBD_ALLOC_PTR(oqctl_tmp);
1208 if (oqctl_tmp == NULL)
1209 GOTO(out, rc = -ENOMEM);
1211 oqctl_tmp->qc_cmd = Q_GETOQUOTA;
1212 oqctl_tmp->qc_id = oqctl->qc_id;
1213 oqctl_tmp->qc_type = oqctl->qc_type;
1215 /* collect space usage from OSTs */
1216 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
1217 rc = obd_quotactl(sbi->ll_dt_exp, oqctl_tmp);
1218 if (!rc || rc == -EREMOTEIO) {
1219 oqctl->qc_dqblk.dqb_curspace =
1220 oqctl_tmp->qc_dqblk.dqb_curspace;
1221 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1224 /* collect space & inode usage from MDTs */
1225 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
1226 oqctl_tmp->qc_dqblk.dqb_curinodes = 0;
1227 rc = obd_quotactl(sbi->ll_md_exp, oqctl_tmp);
1228 if (!rc || rc == -EREMOTEIO) {
1229 oqctl->qc_dqblk.dqb_curspace +=
1230 oqctl_tmp->qc_dqblk.dqb_curspace;
1231 oqctl->qc_dqblk.dqb_curinodes =
1232 oqctl_tmp->qc_dqblk.dqb_curinodes;
1233 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1235 oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE;
1238 OBD_FREE_PTR(oqctl_tmp);
1241 QCTL_COPY(qctl, oqctl);
1242 OBD_FREE(oqctl, oqctl_len);
1248 int ll_rmfid(struct file *file, void __user *arg)
1250 const struct fid_array __user *ufa = arg;
1251 struct fid_array *lfa = NULL;
1254 int i, rc, *rcs = NULL;
1257 if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
1258 !(ll_i2sbi(file_inode(file))->ll_flags & LL_SBI_USER_FID2PATH))
1260 /* Only need to get the buflen */
1261 if (get_user(nr, &ufa->fa_nr))
1263 /* DoS protection */
1264 if (nr > OBD_MAX_FIDS_IN_ARRAY)
1267 size = offsetof(struct fid_array, fa_fids[nr]);
1268 OBD_ALLOC(lfa, size);
1271 OBD_ALLOC_PTR_ARRAY(rcs, nr);
1273 GOTO(free_lfa, rc = -ENOMEM);
1275 if (copy_from_user(lfa, arg, size))
1276 GOTO(free_rcs, rc = -EFAULT);
1278 /* Call mdc_iocontrol */
1279 rc = md_rmfid(ll_i2mdexp(file_inode(file)), lfa, rcs, NULL);
1281 for (i = 0; i < nr; i++)
1283 lfa->fa_fids[i].f_ver = rcs[i];
1284 if (copy_to_user(arg, lfa, size))
1289 OBD_FREE_PTR_ARRAY(rcs, nr);
1291 OBD_FREE(lfa, size);
1296 /* This function tries to get a single name component,
1297 * to send to the server. No actual path traversal involved,
1298 * so we limit to NAME_MAX */
1299 static char *ll_getname(const char __user *filename)
1304 OBD_ALLOC(tmp, NAME_MAX + 1);
1307 return ERR_PTR(-ENOMEM);
1309 len = strncpy_from_user(tmp, filename, NAME_MAX + 1);
1312 else if (len > NAME_MAX)
1313 ret = -ENAMETOOLONG;
1316 OBD_FREE(tmp, NAME_MAX + 1);
1322 #define ll_putname(filename) OBD_FREE(filename, NAME_MAX + 1);
1324 static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1326 struct dentry *dentry = file_dentry(file);
1327 struct inode *inode = file_inode(file);
1328 struct ll_sb_info *sbi = ll_i2sbi(inode);
1329 struct obd_ioctl_data *data;
1333 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%#x\n",
1334 PFID(ll_inode2fid(inode)), inode, cmd);
1336 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1337 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1340 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1342 case FS_IOC_GETFLAGS:
1343 case FS_IOC_SETFLAGS:
1344 RETURN(ll_iocontrol(inode, file, cmd, arg));
1345 case FSFILT_IOC_GETVERSION:
1346 case FS_IOC_GETVERSION:
1347 RETURN(put_user(inode->i_generation, (int __user *)arg));
1348 /* We need to special case any other ioctls we want to handle,
1349 * to send them to the MDS/OST as appropriate and to properly
1350 * network encode the arg field. */
1351 case FS_IOC_SETVERSION:
1354 case LL_IOC_GET_MDTIDX: {
1357 mdtidx = ll_get_mdt_idx(inode);
1361 if (put_user((int)mdtidx, (int __user *)arg))
1366 case IOC_MDC_LOOKUP: {
1367 int namelen, len = 0;
1371 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1376 filename = data->ioc_inlbuf1;
1377 namelen = strlen(filename);
1379 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1380 GOTO(out_free, rc = -EINVAL);
1383 rc = ll_get_fid_by_name(inode, filename, namelen, NULL, NULL);
1385 CERROR("%s: lookup %.*s failed: rc = %d\n",
1386 sbi->ll_fsname, namelen, filename, rc);
1390 OBD_FREE_LARGE(buf, len);
1393 case LL_IOC_LMV_SETSTRIPE: {
1394 struct lmv_user_md *lum;
1403 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1408 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1409 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1410 GOTO(lmv_out_free, rc = -EINVAL);
1412 filename = data->ioc_inlbuf1;
1413 namelen = data->ioc_inllen1;
1416 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1417 GOTO(lmv_out_free, rc = -EINVAL);
1419 lum = (struct lmv_user_md *)data->ioc_inlbuf2;
1420 lumlen = data->ioc_inllen2;
1422 if (!lmv_user_magic_supported(lum->lum_magic)) {
1423 CERROR("%s: wrong lum magic %x : rc = %d\n", filename,
1424 lum->lum_magic, -EINVAL);
1425 GOTO(lmv_out_free, rc = -EINVAL);
1428 if ((lum->lum_magic == LMV_USER_MAGIC ||
1429 lum->lum_magic == LMV_USER_MAGIC_SPECIFIC) &&
1430 lumlen < sizeof(*lum)) {
1431 CERROR("%s: wrong lum size %d for magic %x : rc = %d\n",
1432 filename, lumlen, lum->lum_magic, -EINVAL);
1433 GOTO(lmv_out_free, rc = -EINVAL);
1436 if (lum->lum_magic == LMV_MAGIC_FOREIGN &&
1437 lumlen < sizeof(struct lmv_foreign_md)) {
1438 CERROR("%s: wrong lum magic %x or size %d: rc = %d\n",
1439 filename, lum->lum_magic, lumlen, -EFAULT);
1440 GOTO(lmv_out_free, rc = -EINVAL);
1443 mode = data->ioc_type;
1444 rc = ll_dir_setdirstripe(dentry, lum, lumlen, filename, mode);
1446 OBD_FREE_LARGE(buf, len);
1450 case LL_IOC_LMV_SET_DEFAULT_STRIPE: {
1451 struct lmv_user_md lum;
1452 struct lmv_user_md __user *ulump =
1453 (struct lmv_user_md __user *)arg;
1456 if (copy_from_user(&lum, ulump, sizeof(lum)))
1459 if (lum.lum_magic != LMV_USER_MAGIC)
1462 rc = ll_dir_setstripe(inode, (struct lov_user_md *)&lum, 0);
1466 case LL_IOC_LOV_SETSTRIPE_NEW:
1467 case LL_IOC_LOV_SETSTRIPE: {
1468 struct lov_user_md_v3 *lumv3 = NULL;
1469 struct lov_user_md_v1 lumv1;
1470 struct lov_user_md_v1 *lumv1_ptr = &lumv1;
1471 struct lov_user_md_v1 __user *lumv1p =
1472 (struct lov_user_md_v1 __user *)arg;
1473 struct lov_user_md_v3 __user *lumv3p =
1474 (struct lov_user_md_v3 __user *)arg;
1477 int set_default = 0;
1479 BUILD_BUG_ON(sizeof(struct lov_user_md_v3) <=
1480 sizeof(struct lov_comp_md_v1));
1481 BUILD_BUG_ON(sizeof(*lumv3) != sizeof(*lumv3p));
1482 /* first try with v1 which is smaller than v3 */
1483 if (copy_from_user(&lumv1, lumv1p, sizeof(lumv1)))
1486 if (inode->i_sb->s_root == file_dentry(file))
1489 switch (lumv1.lmm_magic) {
1490 case LOV_USER_MAGIC_V3:
1491 case LOV_USER_MAGIC_SPECIFIC:
1492 lum_size = ll_lov_user_md_size(&lumv1);
1495 OBD_ALLOC(lumv3, lum_size);
1498 if (copy_from_user(lumv3, lumv3p, lum_size))
1499 GOTO(out, rc = -EFAULT);
1500 lumv1_ptr = (struct lov_user_md_v1 *)lumv3;
1502 case LOV_USER_MAGIC_V1:
1505 GOTO(out, rc = -ENOTSUPP);
1508 /* in v1 and v3 cases lumv1 points to data */
1509 rc = ll_dir_setstripe(inode, lumv1_ptr, set_default);
1512 OBD_FREE(lumv3, lum_size);
1515 case LL_IOC_LMV_GETSTRIPE: {
1516 struct lmv_user_md __user *ulmv =
1517 (struct lmv_user_md __user *)arg;
1518 struct lmv_user_md lum;
1519 struct ptlrpc_request *request = NULL;
1520 struct ptlrpc_request *root_request = NULL;
1521 union lmv_mds_md *lmm = NULL;
1524 struct lmv_user_md *tmp = NULL;
1528 int max_stripe_count;
1532 if (copy_from_user(&lum, ulmv, sizeof(*ulmv)))
1535 max_stripe_count = lum.lum_stripe_count;
1536 /* lum_magic will indicate which stripe the ioctl will like
1537 * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC
1538 * is for default LMV stripe */
1539 if (lum.lum_magic == LMV_MAGIC_V1)
1540 valid |= OBD_MD_MEA;
1541 else if (lum.lum_magic == LMV_USER_MAGIC)
1542 valid |= OBD_MD_DEFAULT_MEA;
1546 rc = ll_dir_getstripe_default(inode, (void **)&lmm, &lmmsize,
1547 &request, &root_request, valid);
1549 GOTO(finish_req, rc);
1551 /* Get default LMV EA */
1552 if (lum.lum_magic == LMV_USER_MAGIC) {
1553 if (lmmsize > sizeof(*ulmv))
1554 GOTO(finish_req, rc = -EINVAL);
1556 if (copy_to_user(ulmv, lmm, lmmsize))
1557 GOTO(finish_req, rc = -EFAULT);
1559 GOTO(finish_req, rc);
1562 /* if foreign LMV case, fake stripes number */
1563 if (lmm->lmv_magic == LMV_MAGIC_FOREIGN) {
1564 struct lmv_foreign_md *lfm;
1566 lfm = (struct lmv_foreign_md *)lmm;
1567 if (lfm->lfm_length < XATTR_SIZE_MAX -
1568 offsetof(typeof(*lfm), lfm_value)) {
1569 __u32 size = lfm->lfm_length +
1570 offsetof(typeof(*lfm), lfm_value);
1572 stripe_count = lmv_foreign_to_md_stripes(size);
1574 CERROR("invalid %d foreign size returned\n",
1579 stripe_count = lmv_mds_md_stripe_count_get(lmm);
1581 if (max_stripe_count < stripe_count) {
1582 lum.lum_stripe_count = stripe_count;
1583 if (copy_to_user(ulmv, &lum, sizeof(lum)))
1584 GOTO(finish_req, rc = -EFAULT);
1585 GOTO(finish_req, rc = -E2BIG);
1588 /* enough room on user side and foreign case */
1589 if (lmm->lmv_magic == LMV_MAGIC_FOREIGN) {
1590 struct lmv_foreign_md *lfm;
1593 lfm = (struct lmv_foreign_md *)lmm;
1594 size = lfm->lfm_length +
1595 offsetof(struct lmv_foreign_md, lfm_value);
1596 if (copy_to_user(ulmv, lfm, size))
1597 GOTO(finish_req, rc = -EFAULT);
1598 GOTO(finish_req, rc);
1601 lum_size = lmv_user_md_size(stripe_count,
1602 LMV_USER_MAGIC_SPECIFIC);
1603 OBD_ALLOC(tmp, lum_size);
1605 GOTO(finish_req, rc = -ENOMEM);
1607 mdt_index = ll_get_mdt_idx(inode);
1609 GOTO(out_tmp, rc = -ENOMEM);
1611 tmp->lum_magic = LMV_MAGIC_V1;
1612 tmp->lum_stripe_count = 0;
1613 tmp->lum_stripe_offset = mdt_index;
1614 tmp->lum_hash_type = lmv_mds_md_hash_type_get(lmm);
1615 for (i = 0; i < stripe_count; i++) {
1618 fid_le_to_cpu(&fid, &lmm->lmv_md_v1.lmv_stripe_fids[i]);
1619 if (fid_is_sane(&fid)) {
1620 mdt_index = ll_get_mdt_idx_by_fid(sbi, &fid);
1622 GOTO(out_tmp, rc = mdt_index);
1624 tmp->lum_objects[i].lum_mds = mdt_index;
1625 tmp->lum_objects[i].lum_fid = fid;
1628 tmp->lum_stripe_count++;
1631 if (copy_to_user(ulmv, tmp, lum_size))
1632 GOTO(out_tmp, rc = -EFAULT);
1634 OBD_FREE(tmp, lum_size);
1636 ptlrpc_req_finished(request);
1637 ptlrpc_req_finished(root_request);
1641 case LL_IOC_REMOVE_ENTRY: {
1642 char *filename = NULL;
1646 /* Here is a little hack to avoid sending REINT_RMENTRY to
1647 * unsupported server, which might crash the server(LU-2730),
1648 * Because both LVB_TYPE and REINT_RMENTRY will be supported
1649 * on 2.4, we use OBD_CONNECT_LVB_TYPE to detect whether the
1650 * server will support REINT_RMENTRY XXX*/
1651 if (!(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_LVB_TYPE))
1654 filename = ll_getname((const char __user *)arg);
1655 if (IS_ERR(filename))
1656 RETURN(PTR_ERR(filename));
1658 namelen = strlen(filename);
1660 GOTO(out_rmdir, rc = -EINVAL);
1662 rc = ll_rmdir_entry(inode, filename, namelen);
1665 ll_putname(filename);
1669 RETURN(ll_rmfid(file, (void __user *)arg));
1670 case LL_IOC_LOV_SWAP_LAYOUTS:
1672 case IOC_OBD_STATFS:
1673 RETURN(ll_obd_statfs(inode, (void __user *)arg));
1674 case LL_IOC_LOV_GETSTRIPE:
1675 case LL_IOC_LOV_GETSTRIPE_NEW:
1676 case LL_IOC_MDC_GETINFO:
1677 case LL_IOC_MDC_GETINFO_OLD:
1678 case IOC_MDC_GETFILEINFO:
1679 case IOC_MDC_GETFILEINFO_OLD:
1680 case IOC_MDC_GETFILESTRIPE: {
1681 struct ptlrpc_request *request = NULL;
1682 struct ptlrpc_request *root_request = NULL;
1683 struct lov_user_md __user *lump;
1684 struct lov_mds_md *lmm = NULL;
1685 struct mdt_body *body;
1686 char *filename = NULL;
1687 lstat_t __user *statp = NULL;
1688 lstatx_t __user *stxp = NULL;
1689 __u64 __user *flagsp = NULL;
1690 __u32 __user *lmmsizep = NULL;
1691 struct lu_fid __user *fidp = NULL;
1694 if (cmd == IOC_MDC_GETFILEINFO_OLD ||
1695 cmd == IOC_MDC_GETFILEINFO ||
1696 cmd == IOC_MDC_GETFILESTRIPE) {
1697 filename = ll_getname((const char __user *)arg);
1698 if (IS_ERR(filename))
1699 RETURN(PTR_ERR(filename));
1701 rc = ll_lov_getstripe_ea_info(inode, filename, &lmm,
1702 &lmmsize, &request);
1704 rc = ll_dir_getstripe_default(inode, (void **)&lmm,
1710 body = req_capsule_server_get(&request->rq_pill,
1712 LASSERT(body != NULL);
1717 if (rc == -ENODATA && (cmd == IOC_MDC_GETFILEINFO ||
1718 cmd == LL_IOC_MDC_GETINFO ||
1719 cmd == IOC_MDC_GETFILEINFO_OLD ||
1720 cmd == LL_IOC_MDC_GETINFO_OLD)) {
1728 if (cmd == IOC_MDC_GETFILESTRIPE ||
1729 cmd == LL_IOC_LOV_GETSTRIPE ||
1730 cmd == LL_IOC_LOV_GETSTRIPE_NEW) {
1731 lump = (struct lov_user_md __user *)arg;
1732 } else if (cmd == IOC_MDC_GETFILEINFO_OLD ||
1733 cmd == LL_IOC_MDC_GETINFO_OLD){
1734 struct lov_user_mds_data_v1 __user *lmdp;
1736 lmdp = (struct lov_user_mds_data_v1 __user *)arg;
1737 statp = &lmdp->lmd_st;
1738 lump = &lmdp->lmd_lmm;
1740 struct lov_user_mds_data __user *lmdp;
1742 lmdp = (struct lov_user_mds_data __user *)arg;
1743 fidp = &lmdp->lmd_fid;
1744 stxp = &lmdp->lmd_stx;
1745 flagsp = &lmdp->lmd_flags;
1746 lmmsizep = &lmdp->lmd_lmmsize;
1747 lump = &lmdp->lmd_lmm;
1751 /* If the file has no striping then zero out *lump so
1752 * that the caller isn't confused by garbage. */
1753 if (clear_user(lump, sizeof(*lump)))
1754 GOTO(out_req, rc = -EFAULT);
1755 } else if (copy_to_user(lump, lmm, lmmsize)) {
1756 if (copy_to_user(lump, lmm, sizeof(*lump)))
1757 GOTO(out_req, rc = -EFAULT);
1761 if (cmd == IOC_MDC_GETFILEINFO_OLD ||
1762 cmd == LL_IOC_MDC_GETINFO_OLD) {
1765 st.st_dev = inode->i_sb->s_dev;
1766 st.st_mode = body->mbo_mode;
1767 st.st_nlink = body->mbo_nlink;
1768 st.st_uid = body->mbo_uid;
1769 st.st_gid = body->mbo_gid;
1770 st.st_rdev = body->mbo_rdev;
1771 st.st_size = body->mbo_size;
1772 st.st_blksize = PAGE_SIZE;
1773 st.st_blocks = body->mbo_blocks;
1774 st.st_atime = body->mbo_atime;
1775 st.st_mtime = body->mbo_mtime;
1776 st.st_ctime = body->mbo_ctime;
1777 st.st_ino = cl_fid_build_ino(&body->mbo_fid1,
1781 if (copy_to_user(statp, &st, sizeof(st)))
1782 GOTO(out_req, rc = -EFAULT);
1783 } else if (cmd == IOC_MDC_GETFILEINFO ||
1784 cmd == LL_IOC_MDC_GETINFO) {
1785 lstatx_t stx = { 0 };
1786 __u64 valid = body->mbo_valid;
1788 stx.stx_blksize = PAGE_SIZE;
1789 stx.stx_nlink = body->mbo_nlink;
1790 stx.stx_uid = body->mbo_uid;
1791 stx.stx_gid = body->mbo_gid;
1792 stx.stx_mode = body->mbo_mode;
1793 stx.stx_ino = cl_fid_build_ino(&body->mbo_fid1,
1796 stx.stx_size = body->mbo_size;
1797 stx.stx_blocks = body->mbo_blocks;
1798 stx.stx_atime.tv_sec = body->mbo_atime;
1799 stx.stx_ctime.tv_sec = body->mbo_ctime;
1800 stx.stx_mtime.tv_sec = body->mbo_mtime;
1801 stx.stx_btime.tv_sec = body->mbo_btime;
1802 stx.stx_rdev_major = MAJOR(body->mbo_rdev);
1803 stx.stx_rdev_minor = MINOR(body->mbo_rdev);
1804 stx.stx_dev_major = MAJOR(inode->i_sb->s_dev);
1805 stx.stx_dev_minor = MINOR(inode->i_sb->s_dev);
1806 stx.stx_mask |= STATX_BASIC_STATS | STATX_BTIME;
1809 * For a striped directory, the size and blocks returned
1810 * from MDT is not correct.
1811 * The size and blocks are aggregated by client across
1813 * Thus for a striped directory, do not return the valid
1814 * FLSIZE and FLBLOCKS flags to the caller.
1815 * However, this whould be better decided by the MDS
1816 * instead of the client.
1818 if (cmd == LL_IOC_MDC_GETINFO &&
1819 ll_i2info(inode)->lli_lsm_md != NULL)
1820 valid &= ~(OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
1822 if (flagsp && copy_to_user(flagsp, &valid,
1824 GOTO(out_req, rc = -EFAULT);
1826 if (fidp && copy_to_user(fidp, &body->mbo_fid1,
1828 GOTO(out_req, rc = -EFAULT);
1830 if (!(valid & OBD_MD_FLSIZE))
1831 stx.stx_mask &= ~STATX_SIZE;
1832 if (!(valid & OBD_MD_FLBLOCKS))
1833 stx.stx_mask &= ~STATX_BLOCKS;
1835 if (stxp && copy_to_user(stxp, &stx, sizeof(stx)))
1836 GOTO(out_req, rc = -EFAULT);
1838 if (lmmsizep && copy_to_user(lmmsizep, &lmmsize,
1840 GOTO(out_req, rc = -EFAULT);
1845 ptlrpc_req_finished(request);
1846 ptlrpc_req_finished(root_request);
1848 ll_putname(filename);
1851 case OBD_IOC_QUOTACTL: {
1852 struct if_quotactl *qctl;
1853 int qctl_len = sizeof(*qctl) + LOV_MAXPOOLNAME + 1;
1855 OBD_ALLOC(qctl, qctl_len);
1859 if (copy_from_user(qctl, (void __user *)arg, sizeof(*qctl)))
1860 GOTO(out_quotactl, rc = -EFAULT);
1862 if (LUSTRE_Q_CMD_IS_POOL(qctl->qc_cmd)) {
1863 char __user *from = (char __user *)arg +
1864 offsetof(typeof(*qctl), qc_poolname);
1865 if (copy_from_user(qctl->qc_poolname, from,
1866 LOV_MAXPOOLNAME + 1))
1867 GOTO(out_quotactl, rc = -EFAULT);
1870 rc = quotactl_ioctl(sbi, qctl);
1872 copy_to_user((void __user *)arg, qctl, sizeof(*qctl)))
1876 OBD_FREE(qctl, qctl_len);
1879 case OBD_IOC_GETDTNAME:
1880 case OBD_IOC_GETMDNAME:
1881 RETURN(ll_get_obd_name(inode, cmd, arg));
1882 case LL_IOC_FLUSHCTX:
1883 RETURN(ll_flush_ctx(inode));
1884 case LL_IOC_GETOBDCOUNT: {
1886 struct obd_export *exp;
1888 if (copy_from_user(&count, (int __user *)arg, sizeof(int)))
1891 /* get ost count when count is zero, get mdt count otherwise */
1892 exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp;
1893 vallen = sizeof(count);
1894 rc = obd_get_info(NULL, exp, sizeof(KEY_TGT_COUNT),
1895 KEY_TGT_COUNT, &vallen, &count);
1897 CERROR("get target count failed: %d\n", rc);
1901 if (copy_to_user((int __user *)arg, &count, sizeof(int)))
1906 case LL_IOC_PATH2FID:
1907 if (copy_to_user((void __user *)arg, ll_inode2fid(inode),
1908 sizeof(struct lu_fid)))
1911 case LL_IOC_GET_CONNECT_FLAGS: {
1912 RETURN(obd_iocontrol(cmd, sbi->ll_md_exp, 0, NULL,
1913 (void __user *)arg));
1915 case OBD_IOC_FID2PATH:
1916 RETURN(ll_fid2path(inode, (void __user *)arg));
1917 case LL_IOC_GETPARENT:
1918 RETURN(ll_getparent(file, (void __user *)arg));
1919 case LL_IOC_FID2MDTIDX: {
1920 struct obd_export *exp = ll_i2mdexp(inode);
1924 if (copy_from_user(&fid, (const struct lu_fid __user *)arg,
1928 /* Call mdc_iocontrol */
1929 rc = obd_iocontrol(LL_IOC_FID2MDTIDX, exp, sizeof(fid), &fid,
1930 (__u32 __user *)&index);
1936 case LL_IOC_HSM_REQUEST: {
1937 struct hsm_user_request *hur;
1944 /* We don't know the true size yet; copy the fixed-size part */
1945 if (copy_from_user(hur, (void __user *)arg, sizeof(*hur))) {
1950 /* Compute the whole struct size */
1951 totalsize = hur_len(hur);
1956 /* Final size will be more than double totalsize */
1957 if (totalsize >= MDS_MAXREQSIZE / 3)
1960 OBD_ALLOC_LARGE(hur, totalsize);
1964 /* Copy the whole struct */
1965 if (copy_from_user(hur, (void __user *)arg, totalsize))
1966 GOTO(out_hur, rc = -EFAULT);
1968 if (hur->hur_request.hr_action == HUA_RELEASE) {
1969 const struct lu_fid *fid;
1973 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
1974 fid = &hur->hur_user_item[i].hui_fid;
1975 f = search_inode_for_lustre(inode->i_sb, fid);
1981 rc = ll_hsm_release(f);
1987 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), totalsize,
1992 OBD_FREE_LARGE(hur, totalsize);
1996 case LL_IOC_HSM_PROGRESS: {
1997 struct hsm_progress_kernel hpk;
1998 struct hsm_progress hp;
2000 if (copy_from_user(&hp, (void __user *)arg, sizeof(hp)))
2003 hpk.hpk_fid = hp.hp_fid;
2004 hpk.hpk_cookie = hp.hp_cookie;
2005 hpk.hpk_extent = hp.hp_extent;
2006 hpk.hpk_flags = hp.hp_flags;
2007 hpk.hpk_errval = hp.hp_errval;
2008 hpk.hpk_data_version = 0;
2010 /* File may not exist in Lustre; all progress
2011 * reported to Lustre root */
2012 rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk,
2016 case LL_IOC_HSM_CT_START:
2017 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
2020 rc = copy_and_ct_start(cmd, sbi->ll_md_exp,
2021 (struct lustre_kernelcomm __user *)arg);
2024 case LL_IOC_HSM_COPY_START: {
2025 struct hsm_copy *copy;
2028 OBD_ALLOC_PTR(copy);
2031 if (copy_from_user(copy, (char __user *)arg, sizeof(*copy))) {
2036 rc = ll_ioc_copy_start(inode->i_sb, copy);
2037 if (copy_to_user((char __user *)arg, copy, sizeof(*copy)))
2043 case LL_IOC_HSM_COPY_END: {
2044 struct hsm_copy *copy;
2047 OBD_ALLOC_PTR(copy);
2050 if (copy_from_user(copy, (char __user *)arg, sizeof(*copy))) {
2055 rc = ll_ioc_copy_end(inode->i_sb, copy);
2056 if (copy_to_user((char __user *)arg, copy, sizeof(*copy)))
2062 case LL_IOC_MIGRATE: {
2063 struct lmv_user_md *lum;
2070 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
2074 data = (struct obd_ioctl_data *)buf;
2075 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
2076 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
2077 GOTO(migrate_free, rc = -EINVAL);
2079 filename = data->ioc_inlbuf1;
2080 namelen = data->ioc_inllen1;
2082 if (namelen < 1 || namelen != strlen(filename) + 1) {
2083 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
2084 GOTO(migrate_free, rc = -EINVAL);
2087 lum = (struct lmv_user_md *)data->ioc_inlbuf2;
2088 if (lum->lum_magic != LMV_USER_MAGIC &&
2089 lum->lum_magic != LMV_USER_MAGIC_SPECIFIC) {
2091 CERROR("%s: wrong lum magic %x: rc = %d\n",
2092 filename, lum->lum_magic, rc);
2093 GOTO(migrate_free, rc);
2096 rc = ll_migrate(inode, file, lum, filename);
2098 OBD_FREE_LARGE(buf, len);
2102 case FS_IOC_FSGETXATTR:
2103 RETURN(ll_ioctl_fsgetxattr(inode, cmd, arg));
2104 case FS_IOC_FSSETXATTR:
2105 RETURN(ll_ioctl_fssetxattr(inode, cmd, arg));
2106 case LL_IOC_PCC_DETACH_BY_FID: {
2107 struct lu_pcc_detach_fid *detach;
2109 struct inode *inode2;
2112 OBD_ALLOC_PTR(detach);
2116 if (copy_from_user(detach,
2117 (const struct lu_pcc_detach_fid __user *)arg,
2119 GOTO(out_detach, rc = -EFAULT);
2121 fid = &detach->pccd_fid;
2122 ino = cl_fid_build_ino(fid, ll_need_32bit_api(sbi));
2123 inode2 = ilookup5(inode->i_sb, ino, ll_test_inode_by_fid, fid);
2125 /* Target inode is not in inode cache, and PCC file
2126 * has aleady released, return immdiately.
2128 GOTO(out_detach, rc = 0);
2130 if (!S_ISREG(inode2->i_mode))
2131 GOTO(out_iput, rc = -EINVAL);
2133 if (!inode_owner_or_capable(inode2))
2134 GOTO(out_iput, rc = -EPERM);
2136 rc = pcc_ioctl_detach(inode2, detach->pccd_opt);
2140 OBD_FREE_PTR(detach);
2144 RETURN(obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL,
2145 (void __user *)arg));
2149 static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
2151 struct inode *inode = file->f_mapping->host;
2152 struct ll_file_data *fd = file->private_data;
2153 struct ll_sb_info *sbi = ll_i2sbi(inode);
2154 int api32 = ll_need_32bit_api(sbi);
2155 loff_t ret = -EINVAL;
2163 offset += file->f_pos;
2169 offset += LL_DIR_END_OFF_32BIT;
2171 offset += LL_DIR_END_OFF;
2178 ((api32 && offset <= LL_DIR_END_OFF_32BIT) ||
2179 (!api32 && offset <= LL_DIR_END_OFF))) {
2180 if (offset != file->f_pos) {
2181 if ((api32 && offset == LL_DIR_END_OFF_32BIT) ||
2182 (!api32 && offset == LL_DIR_END_OFF))
2183 fd->lfd_pos = MDS_DIR_END_OFF;
2184 else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH)
2185 fd->lfd_pos = offset << 32;
2187 fd->lfd_pos = offset;
2188 file->f_pos = offset;
2189 file->f_version = 0;
2196 inode_unlock(inode);
2200 static int ll_dir_open(struct inode *inode, struct file *file)
2203 RETURN(ll_file_open(inode, file));
2206 static int ll_dir_release(struct inode *inode, struct file *file)
2209 RETURN(ll_file_release(inode, file));
2212 const struct file_operations ll_dir_operations = {
2213 .llseek = ll_dir_seek,
2214 .open = ll_dir_open,
2215 .release = ll_dir_release,
2216 .read = generic_read_dir,
2217 #ifdef HAVE_DIR_CONTEXT
2218 .iterate_shared = ll_iterate,
2220 .readdir = ll_readdir,
2222 .unlocked_ioctl = ll_dir_ioctl,