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, 2016, 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/user_namespace.h>
42 #ifdef HAVE_UIDGID_HEADER
43 # include <linux/uidgid.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>
53 #include <obd_support.h>
54 #include <obd_class.h>
55 #include <uapi/linux/lustre_ioctl.h>
56 #include <lustre_lib.h>
57 #include <lustre_dlm.h>
58 #include <lustre_fid.h>
59 #include <lustre_kernelcomm.h>
60 #include <lustre_swab.h>
62 #include "llite_internal.h"
65 * (new) readdir implementation overview.
67 * Original lustre readdir implementation cached exact copy of raw directory
68 * pages on the client. These pages were indexed in client page cache by
69 * logical offset in the directory file. This design, while very simple and
70 * intuitive had some inherent problems:
72 * . it implies that byte offset to the directory entry serves as a
73 * telldir(3)/seekdir(3) cookie, but that offset is not stable: in
74 * ext3/htree directory entries may move due to splits, and more
77 * . it is incompatible with the design of split directories for cmd3,
78 * that assumes that names are distributed across nodes based on their
79 * hash, and so readdir should be done in hash order.
81 * New readdir implementation does readdir in hash order, and uses hash of a
82 * file name as a telldir/seekdir cookie. This led to number of complications:
84 * . hash is not unique, so it cannot be used to index cached directory
85 * pages on the client (note, that it requires a whole pageful of hash
86 * collided entries to cause two pages to have identical hashes);
88 * . hash is not unique, so it cannot, strictly speaking, be used as an
89 * entry cookie. ext3/htree has the same problem and lustre implementation
90 * mimics their solution: seekdir(hash) positions directory at the first
91 * entry with the given hash.
97 * Client caches directory pages using hash of the first entry as an index. As
98 * noted above hash is not unique, so this solution doesn't work as is:
99 * special processing is needed for "page hash chains" (i.e., sequences of
100 * pages filled with entries all having the same hash value).
102 * First, such chains have to be detected. To this end, server returns to the
103 * client the hash of the first entry on the page next to one returned. When
104 * client detects that this hash is the same as hash of the first entry on the
105 * returned page, page hash collision has to be handled. Pages in the
106 * hash chain, except first one, are termed "overflow pages".
108 * Solution to index uniqueness problem is to not cache overflow
109 * pages. Instead, when page hash collision is detected, all overflow pages
110 * from emerging chain are immediately requested from the server and placed in
111 * a special data structure (struct ll_dir_chain). This data structure is used
112 * by ll_readdir() to process entries from overflow pages. When readdir
113 * invocation finishes, overflow pages are discarded. If page hash collision
114 * chain weren't completely processed, next call to readdir will again detect
115 * page hash collision, again read overflow pages in, process next portion of
116 * entries and again discard the pages. This is not as wasteful as it looks,
117 * because, given reasonable hash, page hash collisions are extremely rare.
119 * 1. directory positioning
121 * When seekdir(hash) is called, original
132 * identification of and access to overflow pages
136 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
137 * a header lu_dirpage which describes the start/end hash, and whether this
138 * page is empty (contains no dir entry) or hash collide with next page.
139 * After client receives reply, several pages will be integrated into dir page
140 * in PAGE_SIZE (if PAGE_SIZE greater than LU_PAGE_SIZE), and the
141 * lu_dirpage for this integrated page will be adjusted. See
142 * mdc_adjust_dirpages().
145 struct page *ll_get_dir_page(struct inode *dir, struct md_op_data *op_data,
146 __u64 offset, struct ll_dir_chain *chain)
148 struct md_callback cb_op;
152 cb_op.md_blocking_ast = ll_md_blocking_ast;
153 rc = md_read_page(ll_i2mdexp(dir), op_data, &cb_op, offset, &page);
160 void ll_release_page(struct inode *inode, struct page *page,
165 /* Always remove the page for striped dir, because the page is
166 * built from temporarily in LMV layer */
167 if (inode != NULL && S_ISDIR(inode->i_mode) &&
168 ll_i2info(inode)->lli_lsm_md != NULL) {
175 if (likely(page->mapping != NULL))
176 truncate_complete_page(page->mapping, page);
183 * return IF_* type for given lu_dirent entry.
184 * IF_* flag shld be converted to particular OS file type in
185 * platform llite module.
187 static u16 ll_dirent_type_get(struct lu_dirent *ent)
190 struct luda_type *lt;
193 if (le32_to_cpu(ent->lde_attrs) & LUDA_TYPE) {
194 const unsigned align = sizeof(struct luda_type) - 1;
196 len = le16_to_cpu(ent->lde_namelen);
197 len = (len + align) & ~align;
198 lt = (void *)ent->lde_name + len;
199 type = IFTODT(le16_to_cpu(lt->lt_type));
205 #ifdef HAVE_DIR_CONTEXT
206 int ll_dir_read(struct inode *inode, __u64 *ppos, struct md_op_data *op_data,
207 struct dir_context *ctx)
210 int ll_dir_read(struct inode *inode, __u64 *ppos, struct md_op_data *op_data,
211 void *cookie, filldir_t filldir)
214 struct ll_sb_info *sbi = ll_i2sbi(inode);
216 bool is_api32 = ll_need_32bit_api(sbi);
217 bool is_hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
219 struct ll_dir_chain chain;
224 ll_dir_chain_init(&chain);
226 page = ll_get_dir_page(inode, op_data, pos, &chain);
228 while (rc == 0 && !done) {
229 struct lu_dirpage *dp;
230 struct lu_dirent *ent;
239 hash = MDS_DIR_END_OFF;
240 dp = page_address(page);
241 for (ent = lu_dirent_start(dp); ent != NULL && !done;
242 ent = lu_dirent_next(ent)) {
249 hash = le64_to_cpu(ent->lde_hash);
250 if (hash < pos) /* Skip until we find target hash */
253 namelen = le16_to_cpu(ent->lde_namelen);
254 if (namelen == 0) /* Skip dummy record */
257 if (is_api32 && is_hash64)
261 fid_le_to_cpu(&fid, &ent->lde_fid);
262 ino = cl_fid_build_ino(&fid, is_api32);
263 type = ll_dirent_type_get(ent);
264 /* For ll_nfs_get_name_filldir(), it will try to access
265 * 'ent' through 'lde_name', so the parameter 'name'
266 * for 'filldir()' must be part of the 'ent'. */
267 #ifdef HAVE_DIR_CONTEXT
269 done = !dir_emit(ctx, ent->lde_name, namelen, ino,
272 done = filldir(cookie, ent->lde_name, namelen, lhash,
279 ll_release_page(inode, page, false);
283 next = le64_to_cpu(dp->ldp_hash_end);
285 if (pos == MDS_DIR_END_OFF) {
287 * End of directory reached.
290 ll_release_page(inode, page, false);
293 * Normal case: continue to the next
296 ll_release_page(inode, page,
297 le32_to_cpu(dp->ldp_flags) &
300 page = ll_get_dir_page(inode, op_data, pos,
304 #ifdef HAVE_DIR_CONTEXT
309 ll_dir_chain_fini(&chain);
313 #ifdef HAVE_DIR_CONTEXT
314 static int ll_iterate(struct file *filp, struct dir_context *ctx)
316 static int ll_readdir(struct file *filp, void *cookie, filldir_t filldir)
319 struct inode *inode = file_inode(filp);
320 struct ll_file_data *lfd = LUSTRE_FPRIVATE(filp);
321 struct ll_sb_info *sbi = ll_i2sbi(inode);
322 int hash64 = sbi->ll_flags & LL_SBI_64BIT_HASH;
323 int api32 = ll_need_32bit_api(sbi);
324 struct md_op_data *op_data;
334 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) pos/size"
335 "%lu/%llu 32bit_api %d\n", PFID(ll_inode2fid(inode)),
336 inode, (unsigned long)pos, i_size_read(inode), api32);
338 if (pos == MDS_DIR_END_OFF)
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 if (unlikely(op_data->op_mea1 != NULL)) {
350 /* This is only needed for striped dir to fill ..,
351 * see lmv_read_entry */
352 if (file_dentry(filp)->d_parent != NULL &&
353 file_dentry(filp)->d_parent->d_inode != NULL) {
354 __u64 ibits = MDS_INODELOCK_UPDATE;
355 struct inode *parent =
356 file_dentry(filp)->d_parent->d_inode;
358 if (ll_have_md_lock(parent, &ibits, LCK_MINMODE))
359 op_data->op_fid3 = *ll_inode2fid(parent);
362 /* If it can not find in cache, do lookup .. on the master
364 if (fid_is_zero(&op_data->op_fid3)) {
365 rc = ll_dir_get_parent_fid(inode, &op_data->op_fid3);
367 ll_finish_md_op_data(op_data);
372 #ifdef HAVE_DIR_CONTEXT
374 rc = ll_dir_read(inode, &pos, op_data, ctx);
377 rc = ll_dir_read(inode, &pos, op_data, cookie, filldir);
382 if (pos == MDS_DIR_END_OFF) {
384 pos = LL_DIR_END_OFF_32BIT;
386 pos = LL_DIR_END_OFF;
391 #ifdef HAVE_DIR_CONTEXT
396 ll_finish_md_op_data(op_data);
397 filp->f_version = inode->i_version;
401 ll_stats_ops_tally(sbi, LPROC_LL_READDIR, 1);
406 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
407 static int ll_send_mgc_param(struct obd_export *mgc, char *string)
409 struct mgs_send_param *msp;
416 strlcpy(msp->mgs_param, string, sizeof(msp->mgs_param));
417 rc = obd_set_info_async(NULL, mgc, sizeof(KEY_SET_INFO), KEY_SET_INFO,
418 sizeof(struct mgs_send_param), msp, NULL);
420 CERROR("Failed to set parameter: %d\n", rc);
428 * Create striped directory with specified stripe(@lump)
430 * \param[in] dparent the parent of the directory.
431 * \param[in] lump the specified stripes.
432 * \param[in] dirname the name of the directory.
433 * \param[in] mode the specified mode of the directory.
435 * \retval =0 if striped directory is being created successfully.
436 * <0 if the creation is failed.
438 static int ll_dir_setdirstripe(struct dentry *dparent, struct lmv_user_md *lump,
439 const char *dirname, umode_t mode)
441 struct inode *parent = dparent->d_inode;
442 struct ptlrpc_request *request = NULL;
443 struct md_op_data *op_data;
444 struct ll_sb_info *sbi = ll_i2sbi(parent);
445 struct inode *inode = NULL;
446 struct dentry dentry = {
450 .len = strlen(dirname),
451 .hash = ll_full_name_hash(dparent, dirname,
458 if (unlikely(lump->lum_magic != LMV_USER_MAGIC))
461 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p) name %s "
462 "stripe_offset %d, stripe_count: %u\n",
463 PFID(ll_inode2fid(parent)), parent, dirname,
464 (int)lump->lum_stripe_offset, lump->lum_stripe_count);
466 if (lump->lum_stripe_count > 1 &&
467 !(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_DIR_STRIPE))
470 if (IS_DEADDIR(parent) &&
471 !OBD_FAIL_CHECK(OBD_FAIL_LLITE_NO_CHECK_DEAD))
474 if (lump->lum_magic != cpu_to_le32(LMV_USER_MAGIC))
475 lustre_swab_lmv_user_md(lump);
477 if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
478 mode &= ~current_umask();
479 mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
480 op_data = ll_prep_md_op_data(NULL, parent, NULL, dirname,
481 strlen(dirname), mode, LUSTRE_OPC_MKDIR,
484 RETURN(PTR_ERR(op_data));
486 if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
487 /* selinux_dentry_init_security() uses dentry->d_parent and name
488 * to determine the security context for the file. So our fake
489 * dentry should be real enough for this purpose. */
490 err = ll_dentry_init_security(&dentry, mode, &dentry.d_name,
491 &op_data->op_file_secctx_name,
492 &op_data->op_file_secctx,
493 &op_data->op_file_secctx_size);
495 GOTO(out_op_data, err);
498 op_data->op_cli_flags |= CLI_SET_MEA;
499 err = md_create(sbi->ll_md_exp, op_data, lump, sizeof(*lump), mode,
500 from_kuid(&init_user_ns, current_fsuid()),
501 from_kgid(&init_user_ns, current_fsgid()),
502 cfs_curproc_cap_pack(), 0, &request);
504 GOTO(out_request, err);
506 CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_SETDIRSTRIPE_PAUSE, cfs_fail_val);
508 err = ll_prep_inode(&inode, request, parent->i_sb, NULL);
510 GOTO(out_inode, err);
512 dentry.d_inode = inode;
514 if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
515 err = ll_inode_init_security(&dentry, inode, parent);
517 GOTO(out_inode, err);
524 ptlrpc_req_finished(request);
526 ll_finish_md_op_data(op_data);
531 int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump,
534 struct ll_sb_info *sbi = ll_i2sbi(inode);
535 struct md_op_data *op_data;
536 struct ptlrpc_request *req = NULL;
538 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
539 struct lustre_sb_info *lsi = s2lsi(inode->i_sb);
540 struct obd_device *mgc = lsi->lsi_mgc;
547 * This is coming from userspace, so should be in
548 * local endian. But the MDS would like it in little
549 * endian, so we swab it before we send it.
551 switch (lump->lmm_magic) {
552 case LOV_USER_MAGIC_V1: {
553 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V1))
554 lustre_swab_lov_user_md_v1(lump);
555 lum_size = sizeof(struct lov_user_md_v1);
558 case LOV_USER_MAGIC_V3: {
559 if (lump->lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V3))
560 lustre_swab_lov_user_md_v3(
561 (struct lov_user_md_v3 *)lump);
562 lum_size = sizeof(struct lov_user_md_v3);
565 case LOV_USER_MAGIC_COMP_V1: {
566 if (lump->lmm_magic !=
567 cpu_to_le32(LOV_USER_MAGIC_COMP_V1))
568 lustre_swab_lov_comp_md_v1(
569 (struct lov_comp_md_v1 *)lump);
570 lum_size = le32_to_cpu(
571 ((struct lov_comp_md_v1 *)lump)->lcm_size);
574 case LMV_USER_MAGIC: {
575 if (lump->lmm_magic != cpu_to_le32(LMV_USER_MAGIC))
576 lustre_swab_lmv_user_md(
577 (struct lmv_user_md *)lump);
578 lum_size = sizeof(struct lmv_user_md);
582 CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
583 " %#08x != %#08x nor %#08x\n",
584 lump->lmm_magic, LOV_USER_MAGIC_V1,
590 lum_size = sizeof(struct lov_user_md_v1);
593 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
594 LUSTRE_OPC_ANY, NULL);
596 RETURN(PTR_ERR(op_data));
598 /* swabbing is done in lov_setstripe() on server side */
599 rc = md_setattr(sbi->ll_md_exp, op_data, lump, lum_size, &req);
600 ll_finish_md_op_data(op_data);
601 ptlrpc_req_finished(req);
605 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 13, 53, 0)
607 * 2.9 server has stored filesystem default stripe in ROOT xattr,
608 * and it's stored into system config for backward compatibility.
610 * In the following we use the fact that LOV_USER_MAGIC_V1 and
611 * LOV_USER_MAGIC_V3 have the same initial fields so we do not
612 * need the make the distiction between the 2 versions
614 if (set_default && mgc->u.cli.cl_mgc_mgsexp &&
616 le32_to_cpu(lump->lmm_magic) == LOV_USER_MAGIC_V1 ||
617 le32_to_cpu(lump->lmm_magic) == LOV_USER_MAGIC_V3)) {
621 OBD_ALLOC(param, MGS_PARAM_MAXLEN);
623 GOTO(end, rc = -ENOMEM);
626 /* Get fsname and assume devname to be -MDT0000. */
627 ll_get_fsname(inode->i_sb, buf, MTI_NAME_MAXLEN);
628 strcat(buf, "-MDT0000.lov");
631 /* Set root stripesize */
632 snprintf(buf, MGS_PARAM_MAXLEN, ".stripesize=%u",
633 lump ? le32_to_cpu(lump->lmm_stripe_size) : 0);
634 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
638 /* Set root stripecount */
639 snprintf(buf, MGS_PARAM_MAXLEN, ".stripecount=%hd",
640 lump ? le16_to_cpu(lump->lmm_stripe_count) : 0);
641 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
645 /* Set root stripeoffset */
646 snprintf(buf, MGS_PARAM_MAXLEN, ".stripeoffset=%hd",
647 lump ? le16_to_cpu(lump->lmm_stripe_offset) :
648 (typeof(lump->lmm_stripe_offset))(-1));
649 rc = ll_send_mgc_param(mgc->u.cli.cl_mgc_mgsexp, param);
653 OBD_FREE(param, MGS_PARAM_MAXLEN);
660 * This function will be used to get default LOV/LMV/Default LMV
661 * @valid will be used to indicate which stripe it will retrieve
662 * OBD_MD_MEA LMV stripe EA
663 * OBD_MD_DEFAULT_MEA Default LMV stripe EA
664 * otherwise Default LOV EA.
665 * Each time, it can only retrieve 1 stripe EA
667 int ll_dir_getstripe(struct inode *inode, void **plmm, int *plmm_size,
668 struct ptlrpc_request **request, u64 valid)
670 struct ll_sb_info *sbi = ll_i2sbi(inode);
671 struct mdt_body *body;
672 struct lov_mds_md *lmm = NULL;
673 struct ptlrpc_request *req = NULL;
675 struct md_op_data *op_data;
678 rc = ll_get_default_mdsize(sbi, &lmm_size);
682 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
683 0, lmm_size, LUSTRE_OPC_ANY,
686 RETURN(PTR_ERR(op_data));
688 op_data->op_valid = valid | OBD_MD_FLEASIZE | OBD_MD_FLDIREA;
689 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
690 ll_finish_md_op_data(op_data);
692 CDEBUG(D_INFO, "md_getattr failed on inode "
693 DFID": rc %d\n", PFID(ll_inode2fid(inode)), rc);
697 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
698 LASSERT(body != NULL);
700 lmm_size = body->mbo_eadatasize;
702 if (!(body->mbo_valid & (OBD_MD_FLEASIZE | OBD_MD_FLDIREA)) ||
704 GOTO(out, rc = -ENODATA);
707 lmm = req_capsule_server_sized_get(&req->rq_pill,
708 &RMF_MDT_MD, lmm_size);
709 LASSERT(lmm != NULL);
712 * This is coming from the MDS, so is probably in
713 * little endian. We convert it to host endian before
714 * passing it to userspace.
716 /* We don't swab objects for directories */
717 switch (le32_to_cpu(lmm->lmm_magic)) {
719 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
720 lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lmm);
723 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
724 lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)lmm);
726 case LOV_MAGIC_COMP_V1:
727 if (LOV_MAGIC != cpu_to_le32(LOV_MAGIC))
728 lustre_swab_lov_comp_md_v1(
729 (struct lov_comp_md_v1 *)lmm);
732 if (LMV_MAGIC != cpu_to_le32(LMV_MAGIC))
733 lustre_swab_lmv_mds_md((union lmv_mds_md *)lmm);
736 if (LMV_USER_MAGIC != cpu_to_le32(LMV_USER_MAGIC))
737 lustre_swab_lmv_user_md((struct lmv_user_md *)lmm);
740 CERROR("unknown magic: %lX\n", (unsigned long)lmm->lmm_magic);
745 *plmm_size = lmm_size;
750 int ll_get_mdt_idx_by_fid(struct ll_sb_info *sbi, const struct lu_fid *fid)
752 struct md_op_data *op_data;
757 OBD_ALLOC_PTR(op_data);
761 op_data->op_flags |= MF_GET_MDT_IDX;
762 op_data->op_fid1 = *fid;
763 rc = md_getattr(sbi->ll_md_exp, op_data, NULL);
764 mdt_index = op_data->op_mds;
765 OBD_FREE_PTR(op_data);
773 * Get MDT index for the inode.
775 int ll_get_mdt_idx(struct inode *inode)
777 return ll_get_mdt_idx_by_fid(ll_i2sbi(inode), ll_inode2fid(inode));
781 * Generic handler to do any pre-copy work.
783 * It sends a first hsm_progress (with extent length == 0) to coordinator as a
784 * first information for it that real work has started.
786 * Moreover, for a ARCHIVE request, it will sample the file data version and
787 * store it in \a copy.
789 * \return 0 on success.
791 static int ll_ioc_copy_start(struct super_block *sb, struct hsm_copy *copy)
793 struct ll_sb_info *sbi = ll_s2sbi(sb);
794 struct hsm_progress_kernel hpk;
799 /* Forge a hsm_progress based on data from copy. */
800 hpk.hpk_fid = copy->hc_hai.hai_fid;
801 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
802 hpk.hpk_extent.offset = copy->hc_hai.hai_extent.offset;
803 hpk.hpk_extent.length = 0;
806 hpk.hpk_data_version = 0;
809 /* For archive request, we need to read the current file version. */
810 if (copy->hc_hai.hai_action == HSMA_ARCHIVE) {
812 __u64 data_version = 0;
814 /* Get inode for this fid */
815 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
817 hpk.hpk_flags |= HP_FLAG_RETRY;
818 /* hpk_errval is >= 0 */
819 hpk.hpk_errval = -PTR_ERR(inode);
820 GOTO(progress, rc = PTR_ERR(inode));
823 /* Read current file data version */
824 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
827 CDEBUG(D_HSM, "Could not read file data version of "
828 DFID" (rc = %d). Archive request ("
829 "%#llx) could not be done.\n",
830 PFID(©->hc_hai.hai_fid), rc,
831 copy->hc_hai.hai_cookie);
832 hpk.hpk_flags |= HP_FLAG_RETRY;
833 /* hpk_errval must be >= 0 */
834 hpk.hpk_errval = -rc;
838 /* Store in the hsm_copy for later copytool use.
839 * Always modified even if no lsm. */
840 copy->hc_data_version = data_version;
844 /* On error, the request should be considered as completed */
845 if (hpk.hpk_errval > 0)
846 hpk.hpk_flags |= HP_FLAG_COMPLETED;
848 rc2 = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
851 /* Return first error */
852 RETURN(rc != 0 ? rc : rc2);
856 * Generic handler to do any post-copy work.
858 * It will send the last hsm_progress update to coordinator to inform it
859 * that copy is finished and whether it was successful or not.
862 * - for ARCHIVE request, it will sample the file data version and compare it
863 * with the version saved in ll_ioc_copy_start(). If they do not match, copy
864 * will be considered as failed.
865 * - for RESTORE request, it will sample the file data version and send it to
866 * coordinator which is useful if the file was imported as 'released'.
868 * \return 0 on success.
870 static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy)
872 struct ll_sb_info *sbi = ll_s2sbi(sb);
873 struct hsm_progress_kernel hpk;
878 /* If you modify the logic here, also check llapi_hsm_copy_end(). */
879 /* Take care: copy->hc_hai.hai_action, len, gid and data are not
880 * initialized if copy_end was called with copy == NULL.
883 /* Forge a hsm_progress based on data from copy. */
884 hpk.hpk_fid = copy->hc_hai.hai_fid;
885 hpk.hpk_cookie = copy->hc_hai.hai_cookie;
886 hpk.hpk_extent = copy->hc_hai.hai_extent;
887 hpk.hpk_flags = copy->hc_flags | HP_FLAG_COMPLETED;
888 hpk.hpk_errval = copy->hc_errval;
889 hpk.hpk_data_version = 0;
891 /* For archive request, we need to check the file data was not changed.
893 * For restore request, we need to send the file data version, this is
894 * useful when the file was created using hsm_import.
896 if (((copy->hc_hai.hai_action == HSMA_ARCHIVE) ||
897 (copy->hc_hai.hai_action == HSMA_RESTORE)) &&
898 (copy->hc_errval == 0)) {
900 __u64 data_version = 0;
902 /* Get lsm for this fid */
903 inode = search_inode_for_lustre(sb, ©->hc_hai.hai_fid);
905 hpk.hpk_flags |= HP_FLAG_RETRY;
906 /* hpk_errval must be >= 0 */
907 hpk.hpk_errval = -PTR_ERR(inode);
908 GOTO(progress, rc = PTR_ERR(inode));
911 rc = ll_data_version(inode, &data_version, LL_DV_RD_FLUSH);
914 CDEBUG(D_HSM, "Could not read file data version. "
915 "Request could not be confirmed.\n");
916 if (hpk.hpk_errval == 0)
917 hpk.hpk_errval = -rc;
921 /* Store in the hsm_copy for later copytool use.
922 * Always modified even if no lsm. */
923 hpk.hpk_data_version = data_version;
925 /* File could have been stripped during archiving, so we need
926 * to check anyway. */
927 if ((copy->hc_hai.hai_action == HSMA_ARCHIVE) &&
928 (copy->hc_data_version != data_version)) {
929 CDEBUG(D_HSM, "File data version mismatched. "
930 "File content was changed during archiving. "
931 DFID", start:%#llx current:%#llx\n",
932 PFID(©->hc_hai.hai_fid),
933 copy->hc_data_version, data_version);
934 /* File was changed, send error to cdt. Do not ask for
935 * retry because if a file is modified frequently,
936 * the cdt will loop on retried archive requests.
937 * The policy engine will ask for a new archive later
938 * when the file will not be modified for some tunable
940 hpk.hpk_flags &= ~HP_FLAG_RETRY;
942 /* hpk_errval must be >= 0 */
943 hpk.hpk_errval = -rc;
950 rc2 = obd_iocontrol(LL_IOC_HSM_PROGRESS, sbi->ll_md_exp, sizeof(hpk),
953 /* Return first error */
954 RETURN(rc != 0 ? rc : rc2);
958 static int copy_and_ioctl(int cmd, struct obd_export *exp,
959 const void __user *data, size_t size)
964 OBD_ALLOC(copy, size);
968 if (copy_from_user(copy, data, size)) {
973 rc = obd_iocontrol(cmd, exp, size, copy, NULL);
975 OBD_FREE(copy, size);
980 static int check_owner(int type, int id)
984 if (!uid_eq(current_euid(), make_kuid(&init_user_ns, id)))
988 if (!in_egroup_p(make_kgid(&init_user_ns, id)))
997 static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl)
999 int cmd = qctl->qc_cmd;
1000 int type = qctl->qc_type;
1001 int id = qctl->qc_id;
1002 int valid = qctl->qc_valid;
1009 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1013 if (check_owner(type, id) &&
1014 (!cfs_capable(CFS_CAP_SYS_ADMIN)))
1020 CERROR("unsupported quotactl op: %#x\n", cmd);
1024 if (valid != QC_GENERAL) {
1025 if (cmd == Q_GETINFO)
1026 qctl->qc_cmd = Q_GETOINFO;
1027 else if (cmd == Q_GETQUOTA)
1028 qctl->qc_cmd = Q_GETOQUOTA;
1034 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
1035 sizeof(*qctl), qctl, NULL);
1038 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_dt_exp,
1039 sizeof(*qctl), qctl, NULL);
1042 rc = obd_iocontrol(OBD_IOC_QUOTACTL, sbi->ll_md_exp,
1043 sizeof(*qctl), qctl, NULL);
1045 rc = obd_iocontrol(OBD_IOC_QUOTACTL,
1047 sizeof(*qctl), qctl, NULL);
1059 struct obd_quotactl *oqctl;
1061 OBD_ALLOC_PTR(oqctl);
1065 QCTL_COPY(oqctl, qctl);
1066 rc = obd_quotactl(sbi->ll_md_exp, oqctl);
1068 OBD_FREE_PTR(oqctl);
1071 /* If QIF_SPACE is not set, client should collect the
1072 * space usage from OSSs by itself */
1073 if (cmd == Q_GETQUOTA &&
1074 !(oqctl->qc_dqblk.dqb_valid & QIF_SPACE) &&
1075 !oqctl->qc_dqblk.dqb_curspace) {
1076 struct obd_quotactl *oqctl_tmp;
1078 OBD_ALLOC_PTR(oqctl_tmp);
1079 if (oqctl_tmp == NULL)
1080 GOTO(out, rc = -ENOMEM);
1082 oqctl_tmp->qc_cmd = Q_GETOQUOTA;
1083 oqctl_tmp->qc_id = oqctl->qc_id;
1084 oqctl_tmp->qc_type = oqctl->qc_type;
1086 /* collect space usage from OSTs */
1087 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
1088 rc = obd_quotactl(sbi->ll_dt_exp, oqctl_tmp);
1089 if (!rc || rc == -EREMOTEIO) {
1090 oqctl->qc_dqblk.dqb_curspace =
1091 oqctl_tmp->qc_dqblk.dqb_curspace;
1092 oqctl->qc_dqblk.dqb_valid |= QIF_SPACE;
1095 /* collect space & inode usage from MDTs */
1096 oqctl_tmp->qc_dqblk.dqb_curspace = 0;
1097 oqctl_tmp->qc_dqblk.dqb_curinodes = 0;
1098 rc = obd_quotactl(sbi->ll_md_exp, oqctl_tmp);
1099 if (!rc || rc == -EREMOTEIO) {
1100 oqctl->qc_dqblk.dqb_curspace +=
1101 oqctl_tmp->qc_dqblk.dqb_curspace;
1102 oqctl->qc_dqblk.dqb_curinodes =
1103 oqctl_tmp->qc_dqblk.dqb_curinodes;
1104 oqctl->qc_dqblk.dqb_valid |= QIF_INODES;
1106 oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE;
1109 OBD_FREE_PTR(oqctl_tmp);
1112 QCTL_COPY(qctl, oqctl);
1113 OBD_FREE_PTR(oqctl);
1119 /* This function tries to get a single name component,
1120 * to send to the server. No actual path traversal involved,
1121 * so we limit to NAME_MAX */
1122 static char *ll_getname(const char __user *filename)
1127 OBD_ALLOC(tmp, NAME_MAX + 1);
1130 return ERR_PTR(-ENOMEM);
1132 len = strncpy_from_user(tmp, filename, NAME_MAX + 1);
1135 else if (len > NAME_MAX)
1136 ret = -ENAMETOOLONG;
1139 OBD_FREE(tmp, NAME_MAX + 1);
1145 #define ll_putname(filename) OBD_FREE(filename, NAME_MAX + 1);
1147 static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1149 struct dentry *dentry = file_dentry(file);
1150 struct inode *inode = file_inode(file);
1151 struct ll_sb_info *sbi = ll_i2sbi(inode);
1152 struct obd_ioctl_data *data;
1156 CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), cmd=%#x\n",
1157 PFID(ll_inode2fid(inode)), inode, cmd);
1159 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1160 if (_IOC_TYPE(cmd) == 'T' || _IOC_TYPE(cmd) == 't') /* tty ioctls */
1163 ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_IOCTL, 1);
1165 case FSFILT_IOC_GETFLAGS:
1166 case FSFILT_IOC_SETFLAGS:
1167 RETURN(ll_iocontrol(inode, file, cmd, arg));
1168 case FSFILT_IOC_GETVERSION_OLD:
1169 case FSFILT_IOC_GETVERSION:
1170 RETURN(put_user(inode->i_generation, (int __user *)arg));
1171 /* We need to special case any other ioctls we want to handle,
1172 * to send them to the MDS/OST as appropriate and to properly
1173 * network encode the arg field.
1174 case FSFILT_IOC_SETVERSION_OLD:
1175 case FSFILT_IOC_SETVERSION:
1177 case LL_IOC_GET_MDTIDX: {
1180 mdtidx = ll_get_mdt_idx(inode);
1184 if (put_user((int)mdtidx, (int __user *)arg))
1189 case IOC_MDC_LOOKUP: {
1190 int namelen, len = 0;
1194 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1199 filename = data->ioc_inlbuf1;
1200 namelen = strlen(filename);
1202 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1203 GOTO(out_free, rc = -EINVAL);
1206 rc = ll_get_fid_by_name(inode, filename, namelen, NULL, NULL);
1208 CERROR("%s: lookup %.*s failed: rc = %d\n",
1209 ll_get_fsname(inode->i_sb, NULL, 0), namelen,
1214 OBD_FREE_LARGE(buf, len);
1217 case LL_IOC_LMV_SETSTRIPE: {
1218 struct lmv_user_md *lum;
1227 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1232 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1233 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1234 GOTO(lmv_out_free, rc = -EINVAL);
1236 filename = data->ioc_inlbuf1;
1237 namelen = data->ioc_inllen1;
1240 CDEBUG(D_INFO, "IOC_MDC_LOOKUP missing filename\n");
1241 GOTO(lmv_out_free, rc = -EINVAL);
1243 lum = (struct lmv_user_md *)data->ioc_inlbuf2;
1244 lumlen = data->ioc_inllen2;
1246 if (lum->lum_magic != LMV_USER_MAGIC ||
1247 lumlen != sizeof(*lum)) {
1248 CERROR("%s: wrong lum magic %x or size %d: rc = %d\n",
1249 filename, lum->lum_magic, lumlen, -EFAULT);
1250 GOTO(lmv_out_free, rc = -EINVAL);
1253 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 50, 0)
1254 mode = data->ioc_type != 0 ? data->ioc_type : S_IRWXUGO;
1256 mode = data->ioc_type;
1258 rc = ll_dir_setdirstripe(dentry, lum, filename, mode);
1260 OBD_FREE_LARGE(buf, len);
1264 case LL_IOC_LMV_SET_DEFAULT_STRIPE: {
1265 struct lmv_user_md lum;
1266 struct lmv_user_md __user *ulump =
1267 (struct lmv_user_md __user *)arg;
1270 if (copy_from_user(&lum, ulump, sizeof(lum)))
1273 if (lum.lum_magic != LMV_USER_MAGIC)
1276 rc = ll_dir_setstripe(inode, (struct lov_user_md *)&lum, 0);
1280 case LL_IOC_LOV_SETSTRIPE: {
1281 struct lov_user_md_v3 lumv3;
1282 struct lov_user_md_v1 *lumv1 = (struct lov_user_md_v1 *)&lumv3;
1283 struct lov_user_md_v1 __user *lumv1p =
1284 (struct lov_user_md_v1 __user *)arg;
1285 struct lov_user_md_v3 __user *lumv3p =
1286 (struct lov_user_md_v3 __user *)arg;
1288 int set_default = 0;
1290 CLASSERT(sizeof(struct lov_user_md_v3) >
1291 sizeof(struct lov_comp_md_v1));
1292 LASSERT(sizeof(lumv3) == sizeof(*lumv3p));
1293 LASSERT(sizeof(lumv3.lmm_objects[0]) ==
1294 sizeof(lumv3p->lmm_objects[0]));
1295 /* first try with v1 which is smaller than v3 */
1296 if (copy_from_user(lumv1, lumv1p, sizeof(*lumv1)))
1299 if (lumv1->lmm_magic == LOV_USER_MAGIC_V3)
1300 if (copy_from_user(&lumv3, lumv3p, sizeof(lumv3)))
1303 if (inode->i_sb->s_root == file_dentry(file))
1306 /* in v1 and v3 cases lumv1 points to data */
1307 rc = ll_dir_setstripe(inode, lumv1, set_default);
1311 case LL_IOC_LMV_GETSTRIPE: {
1312 struct lmv_user_md __user *ulmv =
1313 (struct lmv_user_md __user *)arg;
1314 struct lmv_user_md lum;
1315 struct ptlrpc_request *request = NULL;
1316 union lmv_mds_md *lmm = NULL;
1319 struct lmv_user_md *tmp = NULL;
1323 int max_stripe_count;
1327 if (copy_from_user(&lum, ulmv, sizeof(*ulmv)))
1330 max_stripe_count = lum.lum_stripe_count;
1331 /* lum_magic will indicate which stripe the ioctl will like
1332 * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC
1333 * is for default LMV stripe */
1334 if (lum.lum_magic == LMV_MAGIC_V1)
1335 valid |= OBD_MD_MEA;
1336 else if (lum.lum_magic == LMV_USER_MAGIC)
1337 valid |= OBD_MD_DEFAULT_MEA;
1341 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, &request,
1344 GOTO(finish_req, rc);
1346 /* Get default LMV EA */
1347 if (lum.lum_magic == LMV_USER_MAGIC) {
1348 if (lmmsize > sizeof(*ulmv))
1349 GOTO(finish_req, rc = -EINVAL);
1351 if (copy_to_user(ulmv, lmm, lmmsize))
1352 GOTO(finish_req, rc = -EFAULT);
1354 GOTO(finish_req, rc);
1357 stripe_count = lmv_mds_md_stripe_count_get(lmm);
1358 if (max_stripe_count < stripe_count) {
1359 lum.lum_stripe_count = stripe_count;
1360 if (copy_to_user(ulmv, &lum, sizeof(lum)))
1361 GOTO(finish_req, rc = -EFAULT);
1362 GOTO(finish_req, rc = -E2BIG);
1365 lum_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1366 OBD_ALLOC(tmp, lum_size);
1368 GOTO(finish_req, rc = -ENOMEM);
1370 mdt_index = ll_get_mdt_idx(inode);
1372 GOTO(out_tmp, rc = -ENOMEM);
1374 tmp->lum_magic = LMV_MAGIC_V1;
1375 tmp->lum_stripe_count = 0;
1376 tmp->lum_stripe_offset = mdt_index;
1377 tmp->lum_hash_type = lmv_mds_md_hash_type_get(lmm);
1378 for (i = 0; i < stripe_count; i++) {
1381 fid_le_to_cpu(&fid, &lmm->lmv_md_v1.lmv_stripe_fids[i]);
1382 mdt_index = ll_get_mdt_idx_by_fid(sbi, &fid);
1384 GOTO(out_tmp, rc = mdt_index);
1386 tmp->lum_objects[i].lum_mds = mdt_index;
1387 tmp->lum_objects[i].lum_fid = fid;
1388 tmp->lum_stripe_count++;
1391 if (copy_to_user(ulmv, tmp, lum_size))
1392 GOTO(out_tmp, rc = -EFAULT);
1394 OBD_FREE(tmp, lum_size);
1396 ptlrpc_req_finished(request);
1400 case LL_IOC_REMOVE_ENTRY: {
1401 char *filename = NULL;
1405 /* Here is a little hack to avoid sending REINT_RMENTRY to
1406 * unsupported server, which might crash the server(LU-2730),
1407 * Because both LVB_TYPE and REINT_RMENTRY will be supported
1408 * on 2.4, we use OBD_CONNECT_LVB_TYPE to detect whether the
1409 * server will support REINT_RMENTRY XXX*/
1410 if (!(exp_connect_flags(sbi->ll_md_exp) & OBD_CONNECT_LVB_TYPE))
1413 filename = ll_getname((const char __user *)arg);
1414 if (IS_ERR(filename))
1415 RETURN(PTR_ERR(filename));
1417 namelen = strlen(filename);
1419 GOTO(out_rmdir, rc = -EINVAL);
1421 rc = ll_rmdir_entry(inode, filename, namelen);
1424 ll_putname(filename);
1427 case LL_IOC_LOV_SWAP_LAYOUTS:
1429 case IOC_OBD_STATFS:
1430 RETURN(ll_obd_statfs(inode, (void __user *)arg));
1431 case LL_IOC_LOV_GETSTRIPE:
1432 case LL_IOC_MDC_GETINFO:
1433 case IOC_MDC_GETFILEINFO:
1434 case IOC_MDC_GETFILESTRIPE: {
1435 struct ptlrpc_request *request = NULL;
1436 struct lov_user_md __user *lump;
1437 struct lov_mds_md *lmm = NULL;
1438 struct mdt_body *body;
1439 char *filename = NULL;
1442 if (cmd == IOC_MDC_GETFILEINFO ||
1443 cmd == IOC_MDC_GETFILESTRIPE) {
1444 filename = ll_getname((const char __user *)arg);
1445 if (IS_ERR(filename))
1446 RETURN(PTR_ERR(filename));
1448 rc = ll_lov_getstripe_ea_info(inode, filename, &lmm,
1449 &lmmsize, &request);
1451 rc = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize,
1456 body = req_capsule_server_get(&request->rq_pill,
1458 LASSERT(body != NULL);
1464 if (rc == -ENODATA && (cmd == IOC_MDC_GETFILEINFO ||
1465 cmd == LL_IOC_MDC_GETINFO))
1466 GOTO(skip_lmm, rc = 0);
1471 if (cmd == IOC_MDC_GETFILESTRIPE ||
1472 cmd == LL_IOC_LOV_GETSTRIPE) {
1473 lump = (struct lov_user_md __user *)arg;
1475 struct lov_user_mds_data __user *lmdp;
1476 lmdp = (struct lov_user_mds_data __user *)arg;
1477 lump = &lmdp->lmd_lmm;
1479 if (copy_to_user(lump, lmm, lmmsize)) {
1480 if (copy_to_user(lump, lmm, sizeof(*lump)))
1481 GOTO(out_req, rc = -EFAULT);
1485 if (cmd == IOC_MDC_GETFILEINFO || cmd == LL_IOC_MDC_GETINFO) {
1486 struct lov_user_mds_data __user *lmdp;
1489 st.st_dev = inode->i_sb->s_dev;
1490 st.st_mode = body->mbo_mode;
1491 st.st_nlink = body->mbo_nlink;
1492 st.st_uid = body->mbo_uid;
1493 st.st_gid = body->mbo_gid;
1494 st.st_rdev = body->mbo_rdev;
1495 st.st_size = body->mbo_size;
1496 st.st_blksize = PAGE_SIZE;
1497 st.st_blocks = body->mbo_blocks;
1498 st.st_atime = body->mbo_atime;
1499 st.st_mtime = body->mbo_mtime;
1500 st.st_ctime = body->mbo_ctime;
1501 st.st_ino = cl_fid_build_ino(&body->mbo_fid1,
1505 lmdp = (struct lov_user_mds_data __user *)arg;
1506 if (copy_to_user(&lmdp->lmd_st, &st, sizeof(st)))
1507 GOTO(out_req, rc = -EFAULT);
1512 ptlrpc_req_finished(request);
1514 ll_putname(filename);
1517 case OBD_IOC_QUOTACTL: {
1518 struct if_quotactl *qctl;
1520 OBD_ALLOC_PTR(qctl);
1524 if (copy_from_user(qctl, (void __user *)arg, sizeof(*qctl)))
1525 GOTO(out_quotactl, rc = -EFAULT);
1527 rc = quotactl_ioctl(sbi, qctl);
1530 copy_to_user((void __user *)arg, qctl, sizeof(*qctl)))
1537 case OBD_IOC_GETDTNAME:
1538 case OBD_IOC_GETMDNAME:
1539 RETURN(ll_get_obd_name(inode, cmd, arg));
1540 case LL_IOC_FLUSHCTX:
1541 RETURN(ll_flush_ctx(inode));
1542 case LL_IOC_GETOBDCOUNT: {
1544 struct obd_export *exp;
1546 if (copy_from_user(&count, (int __user *)arg, sizeof(int)))
1549 /* get ost count when count is zero, get mdt count otherwise */
1550 exp = count ? sbi->ll_md_exp : sbi->ll_dt_exp;
1551 vallen = sizeof(count);
1552 rc = obd_get_info(NULL, exp, sizeof(KEY_TGT_COUNT),
1553 KEY_TGT_COUNT, &vallen, &count);
1555 CERROR("get target count failed: %d\n", rc);
1559 if (copy_to_user((int __user *)arg, &count, sizeof(int)))
1564 case LL_IOC_PATH2FID:
1565 if (copy_to_user((void __user *)arg, ll_inode2fid(inode),
1566 sizeof(struct lu_fid)))
1569 case LL_IOC_GET_CONNECT_FLAGS: {
1570 RETURN(obd_iocontrol(cmd, sbi->ll_md_exp, 0, NULL,
1571 (void __user *)arg));
1573 case OBD_IOC_FID2PATH:
1574 RETURN(ll_fid2path(inode, (void __user *)arg));
1575 case LL_IOC_GETPARENT:
1576 RETURN(ll_getparent(file, (void __user *)arg));
1577 case LL_IOC_FID2MDTIDX: {
1578 struct obd_export *exp = ll_i2mdexp(inode);
1582 if (copy_from_user(&fid, (const struct lu_fid __user *)arg,
1586 /* Call mdc_iocontrol */
1587 rc = obd_iocontrol(LL_IOC_FID2MDTIDX, exp, sizeof(fid), &fid,
1588 (__u32 __user *)&index);
1594 case LL_IOC_HSM_REQUEST: {
1595 struct hsm_user_request *hur;
1602 /* We don't know the true size yet; copy the fixed-size part */
1603 if (copy_from_user(hur, (void __user *)arg, sizeof(*hur))) {
1608 /* Compute the whole struct size */
1609 totalsize = hur_len(hur);
1614 /* Final size will be more than double totalsize */
1615 if (totalsize >= MDS_MAXREQSIZE / 3)
1618 OBD_ALLOC_LARGE(hur, totalsize);
1622 /* Copy the whole struct */
1623 if (copy_from_user(hur, (void __user *)arg, totalsize))
1624 GOTO(out_hur, rc = -EFAULT);
1626 if (hur->hur_request.hr_action == HUA_RELEASE) {
1627 const struct lu_fid *fid;
1631 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
1632 fid = &hur->hur_user_item[i].hui_fid;
1633 f = search_inode_for_lustre(inode->i_sb, fid);
1639 rc = ll_hsm_release(f);
1645 rc = obd_iocontrol(cmd, ll_i2mdexp(inode), totalsize,
1650 OBD_FREE_LARGE(hur, totalsize);
1654 case LL_IOC_HSM_PROGRESS: {
1655 struct hsm_progress_kernel hpk;
1656 struct hsm_progress hp;
1658 if (copy_from_user(&hp, (void __user *)arg, sizeof(hp)))
1661 hpk.hpk_fid = hp.hp_fid;
1662 hpk.hpk_cookie = hp.hp_cookie;
1663 hpk.hpk_extent = hp.hp_extent;
1664 hpk.hpk_flags = hp.hp_flags;
1665 hpk.hpk_errval = hp.hp_errval;
1666 hpk.hpk_data_version = 0;
1668 /* File may not exist in Lustre; all progress
1669 * reported to Lustre root */
1670 rc = obd_iocontrol(cmd, sbi->ll_md_exp, sizeof(hpk), &hpk,
1674 case LL_IOC_HSM_CT_START:
1675 if (!cfs_capable(CFS_CAP_SYS_ADMIN))
1678 rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void __user *)arg,
1679 sizeof(struct lustre_kernelcomm));
1682 case LL_IOC_HSM_COPY_START: {
1683 struct hsm_copy *copy;
1686 OBD_ALLOC_PTR(copy);
1689 if (copy_from_user(copy, (char __user *)arg, sizeof(*copy))) {
1694 rc = ll_ioc_copy_start(inode->i_sb, copy);
1695 if (copy_to_user((char __user *)arg, copy, sizeof(*copy)))
1701 case LL_IOC_HSM_COPY_END: {
1702 struct hsm_copy *copy;
1705 OBD_ALLOC_PTR(copy);
1708 if (copy_from_user(copy, (char __user *)arg, sizeof(*copy))) {
1713 rc = ll_ioc_copy_end(inode->i_sb, copy);
1714 if (copy_to_user((char __user *)arg, copy, sizeof(*copy)))
1720 case LL_IOC_MIGRATE: {
1722 const char *filename;
1728 rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
1732 data = (struct obd_ioctl_data *)buf;
1733 if (data->ioc_inlbuf1 == NULL || data->ioc_inlbuf2 == NULL ||
1734 data->ioc_inllen1 == 0 || data->ioc_inllen2 == 0)
1735 GOTO(migrate_free, rc = -EINVAL);
1737 filename = data->ioc_inlbuf1;
1738 namelen = data->ioc_inllen1;
1739 /* \0 is packed at the end of filename */
1740 if (namelen < 1 || namelen != strlen(filename) + 1)
1741 GOTO(migrate_free, rc = -EINVAL);
1743 if (data->ioc_inllen2 != sizeof(mdtidx))
1744 GOTO(migrate_free, rc = -EINVAL);
1745 mdtidx = *(int *)data->ioc_inlbuf2;
1747 rc = ll_migrate(inode, file, mdtidx, filename, namelen - 1);
1749 OBD_FREE_LARGE(buf, len);
1753 case LL_IOC_FSGETXATTR:
1754 RETURN(ll_ioctl_fsgetxattr(inode, cmd, arg));
1755 case LL_IOC_FSSETXATTR:
1756 RETURN(ll_ioctl_fssetxattr(inode, cmd, arg));
1758 RETURN(obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL,
1759 (void __user *)arg));
1763 static loff_t ll_dir_seek(struct file *file, loff_t offset, int origin)
1765 struct inode *inode = file->f_mapping->host;
1766 struct ll_file_data *fd = LUSTRE_FPRIVATE(file);
1767 struct ll_sb_info *sbi = ll_i2sbi(inode);
1768 int api32 = ll_need_32bit_api(sbi);
1769 loff_t ret = -EINVAL;
1777 offset += file->f_pos;
1783 offset += LL_DIR_END_OFF_32BIT;
1785 offset += LL_DIR_END_OFF;
1792 ((api32 && offset <= LL_DIR_END_OFF_32BIT) ||
1793 (!api32 && offset <= LL_DIR_END_OFF))) {
1794 if (offset != file->f_pos) {
1795 if ((api32 && offset == LL_DIR_END_OFF_32BIT) ||
1796 (!api32 && offset == LL_DIR_END_OFF))
1797 fd->lfd_pos = MDS_DIR_END_OFF;
1798 else if (api32 && sbi->ll_flags & LL_SBI_64BIT_HASH)
1799 fd->lfd_pos = offset << 32;
1801 fd->lfd_pos = offset;
1802 file->f_pos = offset;
1803 file->f_version = 0;
1810 inode_unlock(inode);
1814 static int ll_dir_open(struct inode *inode, struct file *file)
1817 RETURN(ll_file_open(inode, file));
1820 static int ll_dir_release(struct inode *inode, struct file *file)
1823 RETURN(ll_file_release(inode, file));
1826 const struct file_operations ll_dir_operations = {
1827 .llseek = ll_dir_seek,
1828 .open = ll_dir_open,
1829 .release = ll_dir_release,
1830 .read = generic_read_dir,
1831 #ifdef HAVE_DIR_CONTEXT
1832 .iterate = ll_iterate,
1834 .readdir = ll_readdir,
1836 .unlocked_ioctl = ll_dir_ioctl,