4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Directory code for lustre client.
42 #include <linux/pagemap.h>
44 #include <linux/uaccess.h>
45 #include <linux/buffer_head.h> /* for wait_on_buffer */
46 #include <linux/pagevec.h>
47 #include <linux/prefetch.h>
49 #define DEBUG_SUBSYSTEM S_LLITE
51 #include "../include/obd_support.h"
52 #include "../include/obd_class.h"
53 #include "../include/lustre_lib.h"
54 #include "../include/lustre/lustre_idl.h"
55 #include "../include/lustre_lite.h"
56 #include "../include/lustre_dlm.h"
57 #include "../include/lustre_fid.h"
58 #include "../include/lustre_kernelcomm.h"
59 #include "llite_internal.h"
62 * (new) readdir implementation overview.
64 * Original lustre readdir implementation cached exact copy of raw directory
65 * pages on the client. These pages were indexed in client page cache by
66 * logical offset in the directory file. This design, while very simple and
67 * intuitive had some inherent problems:
69 * . it implies that byte offset to the directory entry serves as a
70 * telldir(3)/seekdir(3) cookie, but that offset is not stable: in
71 * ext3/htree directory entries may move due to splits, and more
74 * . it is incompatible with the design of split directories for cmd3,
75 * that assumes that names are distributed across nodes based on their
76 * hash, and so readdir should be done in hash order.
78 * New readdir implementation does readdir in hash order, and uses hash of a
79 * file name as a telldir/seekdir cookie. This led to number of complications:
81 * . hash is not unique, so it cannot be used to index cached directory
82 * pages on the client (note, that it requires a whole pageful of hash
83 * collided entries to cause two pages to have identical hashes);
85 * . hash is not unique, so it cannot, strictly speaking, be used as an
86 * entry cookie. ext3/htree has the same problem and lustre implementation
87 * mimics their solution: seekdir(hash) positions directory at the first
88 * entry with the given hash.
94 * Client caches directory pages using hash of the first entry as an index. As
95 * noted above hash is not unique, so this solution doesn't work as is:
96 * special processing is needed for "page hash chains" (i.e., sequences of
97 * pages filled with entries all having the same hash value).
99 * First, such chains have to be detected. To this end, server returns to the
100 * client the hash of the first entry on the page next to one returned. When
101 * client detects that this hash is the same as hash of the first entry on the
102 * returned page, page hash collision has to be handled. Pages in the
103 * hash chain, except first one, are termed "overflow pages".
105 * Solution to index uniqueness problem is to not cache overflow
106 * pages. Instead, when page hash collision is detected, all overflow pages
107 * from emerging chain are immediately requested from the server and placed in
108 * a special data structure (struct ll_dir_chain). This data structure is used
109 * by ll_readdir() to process entries from overflow pages. When readdir
110 * invocation finishes, overflow pages are discarded. If page hash collision
111 * chain weren't completely processed, next call to readdir will again detect
112 * page hash collision, again read overflow pages in, process next portion of
113 * entries and again discard the pages. This is not as wasteful as it looks,
114 * because, given reasonable hash, page hash collisions are extremely rare.
116 * 1. directory positioning
118 * When seekdir(hash) is called, original
129 * identification of and access to overflow pages
133 * Page in MDS_READPAGE RPC is packed in LU_PAGE_SIZE, and each page contains
134 * a header lu_dirpage which describes the start/end hash, and whether this
135 * page is empty (contains no dir entry) or hash collide with next page.
136 * After client receives reply, several pages will be integrated into dir page
137 * in PAGE_CACHE_SIZE (if PAGE_CACHE_SIZE greater than LU_PAGE_SIZE), and the
138 * lu_dirpage for this integrated page will be adjusted. See
139 * lmv_adjust_dirpages().
143 /* returns the page unlocked, but with a reference */
144 static int ll_dir_filler(void *_hash
, struct page
*page0
)
146 struct inode
*inode
= page0
->mapping
->host
;
147 int hash64
= ll_i2sbi(inode
)->ll_flags
& LL_SBI_64BIT_HASH
;
148 struct obd_export
*exp
= ll_i2sbi(inode
)->ll_md_exp
;
149 struct ptlrpc_request
*request
;
150 struct mdt_body
*body
;
151 struct md_op_data
*op_data
;
152 __u64 hash
= *((__u64
*)_hash
);
153 struct page
**page_pool
;
155 struct lu_dirpage
*dp
;
156 int max_pages
= ll_i2sbi(inode
)->ll_md_brw_size
>> PAGE_CACHE_SHIFT
;
157 int nrdpgs
= 0; /* number of pages read actually */
162 CDEBUG(D_VFSTRACE
, "VFS Op:inode=%lu/%u(%p) hash %llu\n",
163 inode
->i_ino
, inode
->i_generation
, inode
, hash
);
165 LASSERT(max_pages
> 0 && max_pages
<= MD_MAX_BRW_PAGES
);
167 page_pool
= kcalloc(max_pages
, sizeof(page
), GFP_NOFS
);
169 page_pool
[0] = page0
;
174 for (npages
= 1; npages
< max_pages
; npages
++) {
175 page
= page_cache_alloc_cold(inode
->i_mapping
);
178 page_pool
[npages
] = page
;
181 op_data
= ll_prep_md_op_data(NULL
, inode
, NULL
, NULL
, 0, 0,
182 LUSTRE_OPC_ANY
, NULL
);
183 op_data
->op_npages
= npages
;
184 op_data
->op_offset
= hash
;
185 rc
= md_readpage(exp
, op_data
, page_pool
, &request
);
186 ll_finish_md_op_data(op_data
);
188 /* page0 is special, which was added into page cache early */
189 delete_from_page_cache(page0
);
190 } else if (rc
== 0) {
191 body
= req_capsule_server_get(&request
->rq_pill
, &RMF_MDT_BODY
);
192 /* Checked by mdc_readpage() */
193 LASSERT(body
!= NULL
);
195 if (body
->valid
& OBD_MD_FLSIZE
)
196 cl_isize_write(inode
, body
->size
);
198 nrdpgs
= (request
->rq_bulk
->bd_nob_transferred
+PAGE_CACHE_SIZE
-1)
200 SetPageUptodate(page0
);
203 ptlrpc_req_finished(request
);
205 CDEBUG(D_VFSTRACE
, "read %d/%d pages\n", nrdpgs
, npages
);
207 for (i
= 1; i
< npages
; i
++) {
208 unsigned long offset
;
213 if (rc
< 0 || i
>= nrdpgs
) {
214 page_cache_release(page
);
218 SetPageUptodate(page
);
221 hash
= le64_to_cpu(dp
->ldp_hash_start
);
224 offset
= hash_x_index(hash
, hash64
);
226 prefetchw(&page
->flags
);
227 ret
= add_to_page_cache_lru(page
, inode
->i_mapping
, offset
,
232 CDEBUG(D_VFSTRACE
, "page %lu add to page cache failed: %d\n",
235 page_cache_release(page
);
238 if (page_pool
!= &page0
)
243 void ll_release_page(struct page
*page
, int remove
)
248 if (likely(page
->mapping
!= NULL
))
249 truncate_complete_page(page
->mapping
, page
);
252 page_cache_release(page
);
256 * Find, kmap and return page that contains given hash.
258 static struct page
*ll_dir_page_locate(struct inode
*dir
, __u64
*hash
,
259 __u64
*start
, __u64
*end
)
261 int hash64
= ll_i2sbi(dir
)->ll_flags
& LL_SBI_64BIT_HASH
;
262 struct address_space
*mapping
= dir
->i_mapping
;
264 * Complement of hash is used as an index so that
265 * radix_tree_gang_lookup() can be used to find a page with starting
266 * hash _smaller_ than one we are looking for.
268 unsigned long offset
= hash_x_index(*hash
, hash64
);
272 spin_lock_irq(&mapping
->tree_lock
);
273 found
= radix_tree_gang_lookup(&mapping
->page_tree
,
274 (void **)&page
, offset
, 1);
275 if (found
> 0 && !radix_tree_exceptional_entry(page
)) {
276 struct lu_dirpage
*dp
;
278 page_cache_get(page
);
279 spin_unlock_irq(&mapping
->tree_lock
);
281 * In contrast to find_lock_page() we are sure that directory
282 * page cannot be truncated (while DLM lock is held) and,
283 * hence, can avoid restart.
285 * In fact, page cannot be locked here at all, because
286 * ll_dir_filler() does synchronous io.
288 wait_on_page_locked(page
);
289 if (PageUptodate(page
)) {
291 if (BITS_PER_LONG
== 32 && hash64
) {
292 *start
= le64_to_cpu(dp
->ldp_hash_start
) >> 32;
293 *end
= le64_to_cpu(dp
->ldp_hash_end
) >> 32;
296 *start
= le64_to_cpu(dp
->ldp_hash_start
);
297 *end
= le64_to_cpu(dp
->ldp_hash_end
);
299 LASSERTF(*start
<= *hash
, "start = %#llx,end = %#llx,hash = %#llx\n",
300 *start
, *end
, *hash
);
301 CDEBUG(D_VFSTRACE
, "page %lu [%llu %llu], hash %llu\n",
302 offset
, *start
, *end
, *hash
);
304 ll_release_page(page
, 0);
306 } else if (*end
!= *start
&& *hash
== *end
) {
308 * upon hash collision, remove this page,
309 * otherwise put page reference, and
310 * ll_get_dir_page() will issue RPC to fetch
313 ll_release_page(page
,
314 le32_to_cpu(dp
->ldp_flags
) & LDF_COLLIDE
);
318 page_cache_release(page
);
319 page
= ERR_PTR(-EIO
);
323 spin_unlock_irq(&mapping
->tree_lock
);
329 struct page
*ll_get_dir_page(struct inode
*dir
, __u64 hash
,
330 struct ll_dir_chain
*chain
)
332 ldlm_policy_data_t policy
= {.l_inodebits
= {MDS_INODELOCK_UPDATE
} };
333 struct address_space
*mapping
= dir
->i_mapping
;
334 struct lustre_handle lockh
;
335 struct lu_dirpage
*dp
;
342 struct ll_inode_info
*lli
= ll_i2info(dir
);
343 int hash64
= ll_i2sbi(dir
)->ll_flags
& LL_SBI_64BIT_HASH
;
346 rc
= md_lock_match(ll_i2sbi(dir
)->ll_md_exp
, LDLM_FL_BLOCK_GRANTED
,
347 ll_inode2fid(dir
), LDLM_IBITS
, &policy
, mode
, &lockh
);
349 struct ldlm_enqueue_info einfo
= {
350 .ei_type
= LDLM_IBITS
,
352 .ei_cb_bl
= ll_md_blocking_ast
,
353 .ei_cb_cp
= ldlm_completion_ast
,
355 struct lookup_intent it
= { .it_op
= IT_READDIR
};
356 struct ptlrpc_request
*request
;
357 struct md_op_data
*op_data
;
359 op_data
= ll_prep_md_op_data(NULL
, dir
, dir
, NULL
, 0, 0,
360 LUSTRE_OPC_ANY
, NULL
);
362 return (void *)op_data
;
364 rc
= md_enqueue(ll_i2sbi(dir
)->ll_md_exp
, &einfo
, &it
,
365 op_data
, &lockh
, NULL
, 0, NULL
, 0);
367 ll_finish_md_op_data(op_data
);
369 request
= (struct ptlrpc_request
*)it
.d
.lustre
.it_data
;
371 ptlrpc_req_finished(request
);
373 CERROR("lock enqueue: "DFID
" at %llu: rc %d\n",
374 PFID(ll_inode2fid(dir
)), hash
, rc
);
378 CDEBUG(D_INODE
, "setting lr_lvb_inode to inode %p (%lu/%u)\n",
379 dir
, dir
->i_ino
, dir
->i_generation
);
380 md_set_lock_data(ll_i2sbi(dir
)->ll_md_exp
,
381 &it
.d
.lustre
.it_lock_handle
, dir
, NULL
);
383 /* for cross-ref object, l_ast_data of the lock may not be set,
384 * we reset it here */
385 md_set_lock_data(ll_i2sbi(dir
)->ll_md_exp
, &lockh
.cookie
,
388 ldlm_lock_dump_handle(D_OTHER
, &lockh
);
390 mutex_lock(&lli
->lli_readdir_mutex
);
391 page
= ll_dir_page_locate(dir
, &lhash
, &start
, &end
);
393 CERROR("dir page locate: "DFID
" at %llu: rc %ld\n",
394 PFID(ll_inode2fid(dir
)), lhash
, PTR_ERR(page
));
396 } else if (page
!= NULL
) {
398 * XXX nikita: not entirely correct handling of a corner case:
399 * suppose hash chain of entries with hash value HASH crosses
400 * border between pages P0 and P1. First both P0 and P1 are
401 * cached, seekdir() is called for some entry from the P0 part
402 * of the chain. Later P0 goes out of cache. telldir(HASH)
403 * happens and finds P1, as it starts with matching hash
404 * value. Remaining entries from P0 part of the chain are
405 * skipped. (Is that really a bug?)
407 * Possible solutions: 0. don't cache P1 is such case, handle
408 * it as an "overflow" page. 1. invalidate all pages at
409 * once. 2. use HASH|1 as an index for P1.
414 page
= read_cache_page(mapping
, hash_x_index(hash
, hash64
),
415 ll_dir_filler
, &lhash
);
417 CERROR("read cache page: "DFID
" at %llu: rc %ld\n",
418 PFID(ll_inode2fid(dir
)), hash
, PTR_ERR(page
));
422 wait_on_page_locked(page
);
424 if (!PageUptodate(page
)) {
425 CERROR("page not updated: "DFID
" at %llu: rc %d\n",
426 PFID(ll_inode2fid(dir
)), hash
, -5);
429 if (!PageChecked(page
))
430 /* XXX: check page format later */
431 SetPageChecked(page
);
432 if (PageError(page
)) {
433 CERROR("page error: "DFID
" at %llu: rc %d\n",
434 PFID(ll_inode2fid(dir
)), hash
, -5);
438 dp
= page_address(page
);
439 if (BITS_PER_LONG
== 32 && hash64
) {
440 start
= le64_to_cpu(dp
->ldp_hash_start
) >> 32;
441 end
= le64_to_cpu(dp
->ldp_hash_end
) >> 32;
444 start
= le64_to_cpu(dp
->ldp_hash_start
);
445 end
= le64_to_cpu(dp
->ldp_hash_end
);
449 LASSERT(start
== lhash
);
450 CWARN("Page-wide hash collision: %llu\n", end
);
451 if (BITS_PER_LONG
== 32 && hash64
)
452 CWARN("Real page-wide hash collision at [%llu %llu] with hash %llu\n",
453 le64_to_cpu(dp
->ldp_hash_start
),
454 le64_to_cpu(dp
->ldp_hash_end
), hash
);
456 * Fetch whole overflow chain...
463 mutex_unlock(&lli
->lli_readdir_mutex
);
464 ldlm_lock_decref(&lockh
, mode
);
468 ll_release_page(page
, 1);
469 page
= ERR_PTR(-EIO
);
473 int ll_dir_read(struct inode
*inode
, struct dir_context
*ctx
)
475 struct ll_inode_info
*info
= ll_i2info(inode
);
476 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
477 __u64 pos
= ctx
->pos
;
478 int api32
= ll_need_32bit_api(sbi
);
479 int hash64
= sbi
->ll_flags
& LL_SBI_64BIT_HASH
;
481 struct ll_dir_chain chain
;
485 ll_dir_chain_init(&chain
);
487 page
= ll_get_dir_page(inode
, pos
, &chain
);
489 while (rc
== 0 && !done
) {
490 struct lu_dirpage
*dp
;
491 struct lu_dirent
*ent
;
495 * If page is empty (end of directory is reached),
498 __u64 hash
= MDS_DIR_END_OFF
;
501 dp
= page_address(page
);
502 for (ent
= lu_dirent_start(dp
); ent
!= NULL
&& !done
;
503 ent
= lu_dirent_next(ent
)) {
511 * XXX: implement correct swabbing here.
514 hash
= le64_to_cpu(ent
->lde_hash
);
517 * Skip until we find target hash
522 namelen
= le16_to_cpu(ent
->lde_namelen
);
533 fid_le_to_cpu(&fid
, &ent
->lde_fid
);
534 ino
= cl_fid_build_ino(&fid
, api32
);
535 type
= ll_dirent_type_get(ent
);
537 /* For 'll_nfs_get_name_filldir()', it will try
538 * to access the 'ent' through its 'lde_name',
539 * so the parameter 'name' for 'ctx->actor()'
540 * must be part of the 'ent'.
542 done
= !dir_emit(ctx
, ent
->lde_name
,
545 next
= le64_to_cpu(dp
->ldp_hash_end
);
548 if (pos
== MDS_DIR_END_OFF
) {
550 * End of directory reached.
553 ll_release_page(page
, 0);
554 } else if (1 /* chain is exhausted*/) {
556 * Normal case: continue to the next
559 ll_release_page(page
,
560 le32_to_cpu(dp
->ldp_flags
) &
563 page
= ll_get_dir_page(inode
, pos
,
567 * go into overflow page.
569 LASSERT(le32_to_cpu(dp
->ldp_flags
) &
571 ll_release_page(page
, 1);
575 ll_release_page(page
, 0);
579 CERROR("error reading dir "DFID
" at %lu: rc %d\n",
580 PFID(&info
->lli_fid
), (unsigned long)pos
, rc
);
585 ll_dir_chain_fini(&chain
);
589 static int ll_readdir(struct file
*filp
, struct dir_context
*ctx
)
591 struct inode
*inode
= file_inode(filp
);
592 struct ll_file_data
*lfd
= LUSTRE_FPRIVATE(filp
);
593 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
594 int hash64
= sbi
->ll_flags
& LL_SBI_64BIT_HASH
;
595 int api32
= ll_need_32bit_api(sbi
);
598 CDEBUG(D_VFSTRACE
, "VFS Op:inode=%lu/%u(%p) pos %lu/%llu 32bit_api %d\n",
599 inode
->i_ino
, inode
->i_generation
,
600 inode
, (unsigned long)lfd
->lfd_pos
, i_size_read(inode
), api32
);
602 if (lfd
->lfd_pos
== MDS_DIR_END_OFF
) {
610 ctx
->pos
= lfd
->lfd_pos
;
611 rc
= ll_dir_read(inode
, ctx
);
612 lfd
->lfd_pos
= ctx
->pos
;
613 if (ctx
->pos
== MDS_DIR_END_OFF
) {
615 ctx
->pos
= LL_DIR_END_OFF_32BIT
;
617 ctx
->pos
= LL_DIR_END_OFF
;
622 filp
->f_version
= inode
->i_version
;
626 ll_stats_ops_tally(sbi
, LPROC_LL_READDIR
, 1);
631 static int ll_send_mgc_param(struct obd_export
*mgc
, char *string
)
633 struct mgs_send_param
*msp
;
636 msp
= kzalloc(sizeof(*msp
), GFP_NOFS
);
640 strlcpy(msp
->mgs_param
, string
, sizeof(msp
->mgs_param
));
641 rc
= obd_set_info_async(NULL
, mgc
, sizeof(KEY_SET_INFO
), KEY_SET_INFO
,
642 sizeof(struct mgs_send_param
), msp
, NULL
);
644 CERROR("Failed to set parameter: %d\n", rc
);
650 static int ll_dir_setdirstripe(struct inode
*dir
, struct lmv_user_md
*lump
,
653 struct ptlrpc_request
*request
= NULL
;
654 struct md_op_data
*op_data
;
655 struct ll_sb_info
*sbi
= ll_i2sbi(dir
);
659 mode
= (~current_umask() & 0755) | S_IFDIR
;
660 op_data
= ll_prep_md_op_data(NULL
, dir
, NULL
, filename
,
661 strlen(filename
), mode
, LUSTRE_OPC_MKDIR
,
663 if (IS_ERR(op_data
)) {
664 err
= PTR_ERR(op_data
);
668 op_data
->op_cli_flags
|= CLI_SET_MEA
;
669 err
= md_create(sbi
->ll_md_exp
, op_data
, lump
, sizeof(*lump
), mode
,
670 from_kuid(&init_user_ns
, current_fsuid()),
671 from_kgid(&init_user_ns
, current_fsgid()),
672 cfs_curproc_cap_pack(), 0, &request
);
673 ll_finish_md_op_data(op_data
);
677 ptlrpc_req_finished(request
);
681 int ll_dir_setstripe(struct inode
*inode
, struct lov_user_md
*lump
,
684 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
685 struct md_op_data
*op_data
;
686 struct ptlrpc_request
*req
= NULL
;
688 struct lustre_sb_info
*lsi
= s2lsi(inode
->i_sb
);
689 struct obd_device
*mgc
= lsi
->lsi_mgc
;
694 * This is coming from userspace, so should be in
695 * local endian. But the MDS would like it in little
696 * endian, so we swab it before we send it.
698 switch (lump
->lmm_magic
) {
699 case LOV_USER_MAGIC_V1
: {
700 if (lump
->lmm_magic
!= cpu_to_le32(LOV_USER_MAGIC_V1
))
701 lustre_swab_lov_user_md_v1(lump
);
702 lum_size
= sizeof(struct lov_user_md_v1
);
705 case LOV_USER_MAGIC_V3
: {
706 if (lump
->lmm_magic
!= cpu_to_le32(LOV_USER_MAGIC_V3
))
707 lustre_swab_lov_user_md_v3(
708 (struct lov_user_md_v3
*)lump
);
709 lum_size
= sizeof(struct lov_user_md_v3
);
713 CDEBUG(D_IOCTL
, "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
714 lump
->lmm_magic
, LOV_USER_MAGIC_V1
,
720 lum_size
= sizeof(struct lov_user_md_v1
);
723 op_data
= ll_prep_md_op_data(NULL
, inode
, NULL
, NULL
, 0, 0,
724 LUSTRE_OPC_ANY
, NULL
);
726 return PTR_ERR(op_data
);
728 if (lump
!= NULL
&& lump
->lmm_magic
== cpu_to_le32(LMV_USER_MAGIC
))
729 op_data
->op_cli_flags
|= CLI_SET_MEA
;
731 /* swabbing is done in lov_setstripe() on server side */
732 rc
= md_setattr(sbi
->ll_md_exp
, op_data
, lump
, lum_size
,
733 NULL
, 0, &req
, NULL
);
734 ll_finish_md_op_data(op_data
);
735 ptlrpc_req_finished(req
);
737 if (rc
!= -EPERM
&& rc
!= -EACCES
)
738 CERROR("mdc_setattr fails: rc = %d\n", rc
);
741 /* In the following we use the fact that LOV_USER_MAGIC_V1 and
742 LOV_USER_MAGIC_V3 have the same initial fields so we do not
743 need to make the distinction between the 2 versions */
744 if (set_default
&& mgc
->u
.cli
.cl_mgc_mgsexp
) {
748 param
= kzalloc(MGS_PARAM_MAXLEN
, GFP_NOFS
);
753 /* Get fsname and assume devname to be -MDT0000. */
754 ll_get_fsname(inode
->i_sb
, buf
, MTI_NAME_MAXLEN
);
755 strcat(buf
, "-MDT0000.lov");
758 /* Set root stripesize */
759 sprintf(buf
, ".stripesize=%u",
760 lump
? le32_to_cpu(lump
->lmm_stripe_size
) : 0);
761 rc
= ll_send_mgc_param(mgc
->u
.cli
.cl_mgc_mgsexp
, param
);
765 /* Set root stripecount */
766 sprintf(buf
, ".stripecount=%hd",
767 lump
? le16_to_cpu(lump
->lmm_stripe_count
) : 0);
768 rc
= ll_send_mgc_param(mgc
->u
.cli
.cl_mgc_mgsexp
, param
);
772 /* Set root stripeoffset */
773 sprintf(buf
, ".stripeoffset=%hd",
774 lump
? le16_to_cpu(lump
->lmm_stripe_offset
) :
775 (typeof(lump
->lmm_stripe_offset
))(-1));
776 rc
= ll_send_mgc_param(mgc
->u
.cli
.cl_mgc_mgsexp
, param
);
784 int ll_dir_getstripe(struct inode
*inode
, struct lov_mds_md
**lmmp
,
785 int *lmm_size
, struct ptlrpc_request
**request
)
787 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
788 struct mdt_body
*body
;
789 struct lov_mds_md
*lmm
= NULL
;
790 struct ptlrpc_request
*req
= NULL
;
792 struct md_op_data
*op_data
;
794 rc
= ll_get_default_mdsize(sbi
, &lmmsize
);
798 op_data
= ll_prep_md_op_data(NULL
, inode
, NULL
, NULL
,
799 0, lmmsize
, LUSTRE_OPC_ANY
,
802 return PTR_ERR(op_data
);
804 op_data
->op_valid
= OBD_MD_FLEASIZE
| OBD_MD_FLDIREA
;
805 rc
= md_getattr(sbi
->ll_md_exp
, op_data
, &req
);
806 ll_finish_md_op_data(op_data
);
808 CDEBUG(D_INFO
, "md_getattr failed on inode %lu/%u: rc %d\n",
810 inode
->i_generation
, rc
);
814 body
= req_capsule_server_get(&req
->rq_pill
, &RMF_MDT_BODY
);
815 LASSERT(body
!= NULL
);
817 lmmsize
= body
->eadatasize
;
819 if (!(body
->valid
& (OBD_MD_FLEASIZE
| OBD_MD_FLDIREA
)) ||
825 lmm
= req_capsule_server_sized_get(&req
->rq_pill
,
826 &RMF_MDT_MD
, lmmsize
);
827 LASSERT(lmm
!= NULL
);
830 * This is coming from the MDS, so is probably in
831 * little endian. We convert it to host endian before
832 * passing it to userspace.
834 /* We don't swab objects for directories */
835 switch (le32_to_cpu(lmm
->lmm_magic
)) {
837 if (cpu_to_le32(LOV_MAGIC
) != LOV_MAGIC
)
838 lustre_swab_lov_user_md_v1((struct lov_user_md_v1
*)lmm
);
841 if (cpu_to_le32(LOV_MAGIC
) != LOV_MAGIC
)
842 lustre_swab_lov_user_md_v3((struct lov_user_md_v3
*)lmm
);
845 CERROR("unknown magic: %lX\n", (unsigned long)lmm
->lmm_magic
);
856 * Get MDT index for the inode.
858 int ll_get_mdt_idx(struct inode
*inode
)
860 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
861 struct md_op_data
*op_data
;
864 op_data
= ll_prep_md_op_data(NULL
, inode
, NULL
, NULL
, 0,
865 0, LUSTRE_OPC_ANY
, NULL
);
867 return PTR_ERR(op_data
);
869 op_data
->op_flags
|= MF_GET_MDT_IDX
;
870 rc
= md_getattr(sbi
->ll_md_exp
, op_data
, NULL
);
871 mdtidx
= op_data
->op_mds
;
872 ll_finish_md_op_data(op_data
);
874 CDEBUG(D_INFO
, "md_getattr_name: %d\n", rc
);
881 * Generic handler to do any pre-copy work.
883 * It send a first hsm_progress (with extent length == 0) to coordinator as a
884 * first information for it that real work has started.
886 * Moreover, for a ARCHIVE request, it will sample the file data version and
887 * store it in \a copy.
889 * \return 0 on success.
891 static int ll_ioc_copy_start(struct super_block
*sb
, struct hsm_copy
*copy
)
893 struct ll_sb_info
*sbi
= ll_s2sbi(sb
);
894 struct hsm_progress_kernel hpk
;
897 /* Forge a hsm_progress based on data from copy. */
898 hpk
.hpk_fid
= copy
->hc_hai
.hai_fid
;
899 hpk
.hpk_cookie
= copy
->hc_hai
.hai_cookie
;
900 hpk
.hpk_extent
.offset
= copy
->hc_hai
.hai_extent
.offset
;
901 hpk
.hpk_extent
.length
= 0;
904 hpk
.hpk_data_version
= 0;
906 /* For archive request, we need to read the current file version. */
907 if (copy
->hc_hai
.hai_action
== HSMA_ARCHIVE
) {
909 __u64 data_version
= 0;
911 /* Get inode for this fid */
912 inode
= search_inode_for_lustre(sb
, ©
->hc_hai
.hai_fid
);
914 hpk
.hpk_flags
|= HP_FLAG_RETRY
;
915 /* hpk_errval is >= 0 */
916 hpk
.hpk_errval
= -PTR_ERR(inode
);
921 /* Read current file data version */
922 rc
= ll_data_version(inode
, &data_version
, 1);
925 CDEBUG(D_HSM
, "Could not read file data version of "
926 DFID
" (rc = %d). Archive request (%#llx) could not be done.\n",
927 PFID(©
->hc_hai
.hai_fid
), rc
,
928 copy
->hc_hai
.hai_cookie
);
929 hpk
.hpk_flags
|= HP_FLAG_RETRY
;
930 /* hpk_errval must be >= 0 */
931 hpk
.hpk_errval
= -rc
;
935 /* Store it the hsm_copy for later copytool use.
936 * Always modified even if no lsm. */
937 copy
->hc_data_version
= data_version
;
941 rc
= obd_iocontrol(LL_IOC_HSM_PROGRESS
, sbi
->ll_md_exp
, sizeof(hpk
),
948 * Generic handler to do any post-copy work.
950 * It will send the last hsm_progress update to coordinator to inform it
951 * that copy is finished and whether it was successful or not.
954 * - for ARCHIVE request, it will sample the file data version and compare it
955 * with the version saved in ll_ioc_copy_start(). If they do not match, copy
956 * will be considered as failed.
957 * - for RESTORE request, it will sample the file data version and send it to
958 * coordinator which is useful if the file was imported as 'released'.
960 * \return 0 on success.
962 static int ll_ioc_copy_end(struct super_block
*sb
, struct hsm_copy
*copy
)
964 struct ll_sb_info
*sbi
= ll_s2sbi(sb
);
965 struct hsm_progress_kernel hpk
;
968 /* If you modify the logic here, also check llapi_hsm_copy_end(). */
969 /* Take care: copy->hc_hai.hai_action, len, gid and data are not
970 * initialized if copy_end was called with copy == NULL.
973 /* Forge a hsm_progress based on data from copy. */
974 hpk
.hpk_fid
= copy
->hc_hai
.hai_fid
;
975 hpk
.hpk_cookie
= copy
->hc_hai
.hai_cookie
;
976 hpk
.hpk_extent
= copy
->hc_hai
.hai_extent
;
977 hpk
.hpk_flags
= copy
->hc_flags
| HP_FLAG_COMPLETED
;
978 hpk
.hpk_errval
= copy
->hc_errval
;
979 hpk
.hpk_data_version
= 0;
981 /* For archive request, we need to check the file data was not changed.
983 * For restore request, we need to send the file data version, this is
984 * useful when the file was created using hsm_import.
986 if (((copy
->hc_hai
.hai_action
== HSMA_ARCHIVE
) ||
987 (copy
->hc_hai
.hai_action
== HSMA_RESTORE
)) &&
988 (copy
->hc_errval
== 0)) {
990 __u64 data_version
= 0;
992 /* Get lsm for this fid */
993 inode
= search_inode_for_lustre(sb
, ©
->hc_hai
.hai_fid
);
995 hpk
.hpk_flags
|= HP_FLAG_RETRY
;
996 /* hpk_errval must be >= 0 */
997 hpk
.hpk_errval
= -PTR_ERR(inode
);
1002 rc
= ll_data_version(inode
, &data_version
,
1003 copy
->hc_hai
.hai_action
== HSMA_ARCHIVE
);
1006 CDEBUG(D_HSM
, "Could not read file data version. Request could not be confirmed.\n");
1007 if (hpk
.hpk_errval
== 0)
1008 hpk
.hpk_errval
= -rc
;
1012 /* Store it the hsm_copy for later copytool use.
1013 * Always modified even if no lsm. */
1014 hpk
.hpk_data_version
= data_version
;
1016 /* File could have been stripped during archiving, so we need
1017 * to check anyway. */
1018 if ((copy
->hc_hai
.hai_action
== HSMA_ARCHIVE
) &&
1019 (copy
->hc_data_version
!= data_version
)) {
1020 CDEBUG(D_HSM
, "File data version mismatched. File content was changed during archiving. "
1021 DFID
", start:%#llx current:%#llx\n",
1022 PFID(©
->hc_hai
.hai_fid
),
1023 copy
->hc_data_version
, data_version
);
1024 /* File was changed, send error to cdt. Do not ask for
1025 * retry because if a file is modified frequently,
1026 * the cdt will loop on retried archive requests.
1027 * The policy engine will ask for a new archive later
1028 * when the file will not be modified for some tunable
1030 /* we do not notify caller */
1031 hpk
.hpk_flags
&= ~HP_FLAG_RETRY
;
1032 /* hpk_errval must be >= 0 */
1033 hpk
.hpk_errval
= EBUSY
;
1039 rc
= obd_iocontrol(LL_IOC_HSM_PROGRESS
, sbi
->ll_md_exp
, sizeof(hpk
),
1045 static int copy_and_ioctl(int cmd
, struct obd_export
*exp
,
1046 const void __user
*data
, size_t size
)
1051 copy
= kzalloc(size
, GFP_NOFS
);
1055 if (copy_from_user(copy
, data
, size
)) {
1060 rc
= obd_iocontrol(cmd
, exp
, size
, copy
, NULL
);
1067 static int quotactl_ioctl(struct ll_sb_info
*sbi
, struct if_quotactl
*qctl
)
1069 int cmd
= qctl
->qc_cmd
;
1070 int type
= qctl
->qc_type
;
1071 int id
= qctl
->qc_id
;
1072 int valid
= qctl
->qc_valid
;
1076 case LUSTRE_Q_INVALIDATE
:
1077 case LUSTRE_Q_FINVALIDATE
:
1082 if (!capable(CFS_CAP_SYS_ADMIN
) ||
1083 sbi
->ll_flags
& LL_SBI_RMT_CLIENT
)
1087 if (((type
== USRQUOTA
&&
1088 !uid_eq(current_euid(), make_kuid(&init_user_ns
, id
))) ||
1089 (type
== GRPQUOTA
&&
1090 !in_egroup_p(make_kgid(&init_user_ns
, id
)))) &&
1091 (!capable(CFS_CAP_SYS_ADMIN
) ||
1092 sbi
->ll_flags
& LL_SBI_RMT_CLIENT
))
1098 CERROR("unsupported quotactl op: %#x\n", cmd
);
1102 if (valid
!= QC_GENERAL
) {
1103 if (sbi
->ll_flags
& LL_SBI_RMT_CLIENT
)
1106 if (cmd
== Q_GETINFO
)
1107 qctl
->qc_cmd
= Q_GETOINFO
;
1108 else if (cmd
== Q_GETQUOTA
)
1109 qctl
->qc_cmd
= Q_GETOQUOTA
;
1115 rc
= obd_iocontrol(OBD_IOC_QUOTACTL
, sbi
->ll_md_exp
,
1116 sizeof(*qctl
), qctl
, NULL
);
1119 rc
= obd_iocontrol(OBD_IOC_QUOTACTL
, sbi
->ll_dt_exp
,
1120 sizeof(*qctl
), qctl
, NULL
);
1123 rc
= obd_iocontrol(OBD_IOC_QUOTACTL
, sbi
->ll_md_exp
,
1124 sizeof(*qctl
), qctl
, NULL
);
1126 rc
= obd_iocontrol(OBD_IOC_QUOTACTL
,
1128 sizeof(*qctl
), qctl
, NULL
);
1140 struct obd_quotactl
*oqctl
;
1142 oqctl
= kzalloc(sizeof(*oqctl
), GFP_NOFS
);
1146 QCTL_COPY(oqctl
, qctl
);
1147 rc
= obd_quotactl(sbi
->ll_md_exp
, oqctl
);
1149 if (rc
!= -EALREADY
&& cmd
== Q_QUOTAON
) {
1150 oqctl
->qc_cmd
= Q_QUOTAOFF
;
1151 obd_quotactl(sbi
->ll_md_exp
, oqctl
);
1156 /* If QIF_SPACE is not set, client should collect the
1157 * space usage from OSSs by itself */
1158 if (cmd
== Q_GETQUOTA
&&
1159 !(oqctl
->qc_dqblk
.dqb_valid
& QIF_SPACE
) &&
1160 !oqctl
->qc_dqblk
.dqb_curspace
) {
1161 struct obd_quotactl
*oqctl_tmp
;
1163 oqctl_tmp
= kzalloc(sizeof(*oqctl_tmp
), GFP_NOFS
);
1169 oqctl_tmp
->qc_cmd
= Q_GETOQUOTA
;
1170 oqctl_tmp
->qc_id
= oqctl
->qc_id
;
1171 oqctl_tmp
->qc_type
= oqctl
->qc_type
;
1173 /* collect space usage from OSTs */
1174 oqctl_tmp
->qc_dqblk
.dqb_curspace
= 0;
1175 rc
= obd_quotactl(sbi
->ll_dt_exp
, oqctl_tmp
);
1176 if (!rc
|| rc
== -EREMOTEIO
) {
1177 oqctl
->qc_dqblk
.dqb_curspace
=
1178 oqctl_tmp
->qc_dqblk
.dqb_curspace
;
1179 oqctl
->qc_dqblk
.dqb_valid
|= QIF_SPACE
;
1182 /* collect space & inode usage from MDTs */
1183 oqctl_tmp
->qc_dqblk
.dqb_curspace
= 0;
1184 oqctl_tmp
->qc_dqblk
.dqb_curinodes
= 0;
1185 rc
= obd_quotactl(sbi
->ll_md_exp
, oqctl_tmp
);
1186 if (!rc
|| rc
== -EREMOTEIO
) {
1187 oqctl
->qc_dqblk
.dqb_curspace
+=
1188 oqctl_tmp
->qc_dqblk
.dqb_curspace
;
1189 oqctl
->qc_dqblk
.dqb_curinodes
=
1190 oqctl_tmp
->qc_dqblk
.dqb_curinodes
;
1191 oqctl
->qc_dqblk
.dqb_valid
|= QIF_INODES
;
1193 oqctl
->qc_dqblk
.dqb_valid
&= ~QIF_SPACE
;
1199 QCTL_COPY(qctl
, oqctl
);
1206 /* This function tries to get a single name component,
1207 * to send to the server. No actual path traversal involved,
1208 * so we limit to NAME_MAX */
1209 static char *ll_getname(const char __user
*filename
)
1214 tmp
= kzalloc(NAME_MAX
+ 1, GFP_KERNEL
);
1216 return ERR_PTR(-ENOMEM
);
1218 len
= strncpy_from_user(tmp
, filename
, NAME_MAX
+ 1);
1223 else if (len
> NAME_MAX
&& tmp
[NAME_MAX
] != 0)
1224 ret
= -ENAMETOOLONG
;
1233 #define ll_putname(filename) kfree(filename)
1235 static long ll_dir_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1237 struct inode
*inode
= file_inode(file
);
1238 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
1239 struct obd_ioctl_data
*data
;
1242 CDEBUG(D_VFSTRACE
, "VFS Op:inode=%lu/%u(%p), cmd=%#x\n",
1243 inode
->i_ino
, inode
->i_generation
, inode
, cmd
);
1245 /* asm-ppc{,64} declares TCGETS, et. al. as type 't' not 'T' */
1246 if (_IOC_TYPE(cmd
) == 'T' || _IOC_TYPE(cmd
) == 't') /* tty ioctls */
1249 ll_stats_ops_tally(ll_i2sbi(inode
), LPROC_LL_IOCTL
, 1);
1251 case FSFILT_IOC_GETFLAGS
:
1252 case FSFILT_IOC_SETFLAGS
:
1253 return ll_iocontrol(inode
, file
, cmd
, arg
);
1254 case FSFILT_IOC_GETVERSION_OLD
:
1255 case FSFILT_IOC_GETVERSION
:
1256 return put_user(inode
->i_generation
, (int *)arg
);
1257 /* We need to special case any other ioctls we want to handle,
1258 * to send them to the MDS/OST as appropriate and to properly
1259 * network encode the arg field.
1260 case FSFILT_IOC_SETVERSION_OLD:
1261 case FSFILT_IOC_SETVERSION:
1263 case LL_IOC_GET_MDTIDX
: {
1266 mdtidx
= ll_get_mdt_idx(inode
);
1270 if (put_user((int)mdtidx
, (int *)arg
))
1275 case IOC_MDC_LOOKUP
: {
1276 struct ptlrpc_request
*request
= NULL
;
1277 int namelen
, len
= 0;
1280 struct md_op_data
*op_data
;
1282 rc
= obd_ioctl_getdata(&buf
, &len
, (void __user
*)arg
);
1287 filename
= data
->ioc_inlbuf1
;
1288 namelen
= strlen(filename
);
1291 CDEBUG(D_INFO
, "IOC_MDC_LOOKUP missing filename\n");
1296 op_data
= ll_prep_md_op_data(NULL
, inode
, NULL
, filename
, namelen
,
1297 0, LUSTRE_OPC_ANY
, NULL
);
1298 if (IS_ERR(op_data
)) {
1299 rc
= PTR_ERR(op_data
);
1303 op_data
->op_valid
= OBD_MD_FLID
;
1304 rc
= md_getattr_name(sbi
->ll_md_exp
, op_data
, &request
);
1305 ll_finish_md_op_data(op_data
);
1307 CDEBUG(D_INFO
, "md_getattr_name: %d\n", rc
);
1310 ptlrpc_req_finished(request
);
1312 obd_ioctl_freedata(buf
, len
);
1315 case LL_IOC_LMV_SETSTRIPE
: {
1316 struct lmv_user_md
*lum
;
1324 rc
= obd_ioctl_getdata(&buf
, &len
, (void __user
*)arg
);
1329 if (data
->ioc_inlbuf1
== NULL
|| data
->ioc_inlbuf2
== NULL
||
1330 data
->ioc_inllen1
== 0 || data
->ioc_inllen2
== 0) {
1335 filename
= data
->ioc_inlbuf1
;
1336 namelen
= data
->ioc_inllen1
;
1339 CDEBUG(D_INFO
, "IOC_MDC_LOOKUP missing filename\n");
1343 lum
= (struct lmv_user_md
*)data
->ioc_inlbuf2
;
1344 lumlen
= data
->ioc_inllen2
;
1346 if (lum
->lum_magic
!= LMV_USER_MAGIC
||
1347 lumlen
!= sizeof(*lum
)) {
1348 CERROR("%s: wrong lum magic %x or size %d: rc = %d\n",
1349 filename
, lum
->lum_magic
, lumlen
, -EFAULT
);
1355 * ll_dir_setdirstripe will be used to set dir stripe
1356 * mdc_create--->mdt_reint_create (with dirstripe)
1358 rc
= ll_dir_setdirstripe(inode
, lum
, filename
);
1360 obd_ioctl_freedata(buf
, len
);
1364 case LL_IOC_LOV_SETSTRIPE
: {
1365 struct lov_user_md_v3 lumv3
;
1366 struct lov_user_md_v1
*lumv1
= (struct lov_user_md_v1
*)&lumv3
;
1367 struct lov_user_md_v1
*lumv1p
= (struct lov_user_md_v1
*)arg
;
1368 struct lov_user_md_v3
*lumv3p
= (struct lov_user_md_v3
*)arg
;
1370 int set_default
= 0;
1372 LASSERT(sizeof(lumv3
) == sizeof(*lumv3p
));
1373 LASSERT(sizeof(lumv3
.lmm_objects
[0]) ==
1374 sizeof(lumv3p
->lmm_objects
[0]));
1375 /* first try with v1 which is smaller than v3 */
1376 if (copy_from_user(lumv1
, lumv1p
, sizeof(*lumv1
)))
1379 if (lumv1
->lmm_magic
== LOV_USER_MAGIC_V3
) {
1380 if (copy_from_user(&lumv3
, lumv3p
, sizeof(lumv3
)))
1384 if (is_root_inode(inode
))
1387 /* in v1 and v3 cases lumv1 points to data */
1388 rc
= ll_dir_setstripe(inode
, lumv1
, set_default
);
1392 case LL_IOC_LMV_GETSTRIPE
: {
1393 struct lmv_user_md
*lump
= (struct lmv_user_md
*)arg
;
1394 struct lmv_user_md lum
;
1395 struct lmv_user_md
*tmp
;
1400 if (copy_from_user(&lum
, lump
, sizeof(struct lmv_user_md
)))
1403 if (lum
.lum_magic
!= LMV_MAGIC_V1
)
1406 lum_size
= lmv_user_md_size(1, LMV_MAGIC_V1
);
1407 tmp
= kzalloc(lum_size
, GFP_NOFS
);
1414 tmp
->lum_type
= LMV_STRIPE_TYPE
;
1415 tmp
->lum_stripe_count
= 1;
1416 mdtindex
= ll_get_mdt_idx(inode
);
1422 tmp
->lum_stripe_offset
= mdtindex
;
1423 tmp
->lum_objects
[0].lum_mds
= mdtindex
;
1424 memcpy(&tmp
->lum_objects
[0].lum_fid
, ll_inode2fid(inode
),
1425 sizeof(struct lu_fid
));
1426 if (copy_to_user((void *)arg
, tmp
, lum_size
)) {
1434 case LL_IOC_LOV_SWAP_LAYOUTS
:
1436 case LL_IOC_OBD_STATFS
:
1437 return ll_obd_statfs(inode
, (void __user
*)arg
);
1438 case LL_IOC_LOV_GETSTRIPE
:
1439 case LL_IOC_MDC_GETINFO
:
1440 case IOC_MDC_GETFILEINFO
:
1441 case IOC_MDC_GETFILESTRIPE
: {
1442 struct ptlrpc_request
*request
= NULL
;
1443 struct lov_user_md
*lump
;
1444 struct lov_mds_md
*lmm
= NULL
;
1445 struct mdt_body
*body
;
1446 char *filename
= NULL
;
1449 if (cmd
== IOC_MDC_GETFILEINFO
||
1450 cmd
== IOC_MDC_GETFILESTRIPE
) {
1451 filename
= ll_getname((const char __user
*)arg
);
1452 if (IS_ERR(filename
))
1453 return PTR_ERR(filename
);
1455 rc
= ll_lov_getstripe_ea_info(inode
, filename
, &lmm
,
1456 &lmmsize
, &request
);
1458 rc
= ll_dir_getstripe(inode
, &lmm
, &lmmsize
, &request
);
1462 body
= req_capsule_server_get(&request
->rq_pill
,
1464 LASSERT(body
!= NULL
);
1470 if (rc
== -ENODATA
&& (cmd
== IOC_MDC_GETFILEINFO
||
1471 cmd
== LL_IOC_MDC_GETINFO
)) {
1478 if (cmd
== IOC_MDC_GETFILESTRIPE
||
1479 cmd
== LL_IOC_LOV_GETSTRIPE
) {
1480 lump
= (struct lov_user_md
*)arg
;
1482 struct lov_user_mds_data
*lmdp
;
1484 lmdp
= (struct lov_user_mds_data
*)arg
;
1485 lump
= &lmdp
->lmd_lmm
;
1487 if (copy_to_user(lump
, lmm
, lmmsize
)) {
1488 if (copy_to_user(lump
, lmm
, sizeof(*lump
))) {
1495 if (cmd
== IOC_MDC_GETFILEINFO
|| cmd
== LL_IOC_MDC_GETINFO
) {
1496 struct lov_user_mds_data
*lmdp
;
1499 st
.st_dev
= inode
->i_sb
->s_dev
;
1500 st
.st_mode
= body
->mode
;
1501 st
.st_nlink
= body
->nlink
;
1502 st
.st_uid
= body
->uid
;
1503 st
.st_gid
= body
->gid
;
1504 st
.st_rdev
= body
->rdev
;
1505 st
.st_size
= body
->size
;
1506 st
.st_blksize
= PAGE_CACHE_SIZE
;
1507 st
.st_blocks
= body
->blocks
;
1508 st
.st_atime
= body
->atime
;
1509 st
.st_mtime
= body
->mtime
;
1510 st
.st_ctime
= body
->ctime
;
1511 st
.st_ino
= inode
->i_ino
;
1513 lmdp
= (struct lov_user_mds_data
*)arg
;
1514 if (copy_to_user(&lmdp
->lmd_st
, &st
, sizeof(st
))) {
1521 ptlrpc_req_finished(request
);
1523 ll_putname(filename
);
1526 case IOC_LOV_GETINFO
: {
1527 struct lov_user_mds_data
*lumd
;
1528 struct lov_stripe_md
*lsm
;
1529 struct lov_user_md
*lum
;
1530 struct lov_mds_md
*lmm
;
1534 lumd
= (struct lov_user_mds_data
*)arg
;
1535 lum
= &lumd
->lmd_lmm
;
1537 rc
= ll_get_max_mdsize(sbi
, &lmmsize
);
1541 lmm
= libcfs_kvzalloc(lmmsize
, GFP_NOFS
);
1544 if (copy_from_user(lmm
, lum
, lmmsize
)) {
1549 switch (lmm
->lmm_magic
) {
1550 case LOV_USER_MAGIC_V1
:
1551 if (cpu_to_le32(LOV_USER_MAGIC_V1
) == LOV_USER_MAGIC_V1
)
1553 /* swab objects first so that stripes num will be sane */
1554 lustre_swab_lov_user_md_objects(
1555 ((struct lov_user_md_v1
*)lmm
)->lmm_objects
,
1556 ((struct lov_user_md_v1
*)lmm
)->lmm_stripe_count
);
1557 lustre_swab_lov_user_md_v1((struct lov_user_md_v1
*)lmm
);
1559 case LOV_USER_MAGIC_V3
:
1560 if (cpu_to_le32(LOV_USER_MAGIC_V3
) == LOV_USER_MAGIC_V3
)
1562 /* swab objects first so that stripes num will be sane */
1563 lustre_swab_lov_user_md_objects(
1564 ((struct lov_user_md_v3
*)lmm
)->lmm_objects
,
1565 ((struct lov_user_md_v3
*)lmm
)->lmm_stripe_count
);
1566 lustre_swab_lov_user_md_v3((struct lov_user_md_v3
*)lmm
);
1573 rc
= obd_unpackmd(sbi
->ll_dt_exp
, &lsm
, lmm
, lmmsize
);
1579 /* Perform glimpse_size operation. */
1580 memset(&st
, 0, sizeof(st
));
1582 rc
= ll_glimpse_ioctl(sbi
, lsm
, &st
);
1586 if (copy_to_user(&lumd
->lmd_st
, &st
, sizeof(st
))) {
1592 obd_free_memmd(sbi
->ll_dt_exp
, &lsm
);
1597 case OBD_IOC_LLOG_CATINFO
: {
1600 case OBD_IOC_QUOTACHECK
: {
1601 struct obd_quotactl
*oqctl
;
1604 if (!capable(CFS_CAP_SYS_ADMIN
) ||
1605 sbi
->ll_flags
& LL_SBI_RMT_CLIENT
)
1608 oqctl
= kzalloc(sizeof(*oqctl
), GFP_NOFS
);
1611 oqctl
->qc_type
= arg
;
1612 rc
= obd_quotacheck(sbi
->ll_md_exp
, oqctl
);
1614 CDEBUG(D_INFO
, "md_quotacheck failed: rc %d\n", rc
);
1618 rc
= obd_quotacheck(sbi
->ll_dt_exp
, oqctl
);
1620 CDEBUG(D_INFO
, "obd_quotacheck failed: rc %d\n", rc
);
1625 case OBD_IOC_POLL_QUOTACHECK
: {
1626 struct if_quotacheck
*check
;
1628 if (!capable(CFS_CAP_SYS_ADMIN
) ||
1629 sbi
->ll_flags
& LL_SBI_RMT_CLIENT
)
1632 check
= kzalloc(sizeof(*check
), GFP_NOFS
);
1636 rc
= obd_iocontrol(cmd
, sbi
->ll_md_exp
, 0, (void *)check
,
1639 CDEBUG(D_QUOTA
, "mdc ioctl %d failed: %d\n", cmd
, rc
);
1640 if (copy_to_user((void *)arg
, check
,
1642 CDEBUG(D_QUOTA
, "copy_to_user failed\n");
1646 rc
= obd_iocontrol(cmd
, sbi
->ll_dt_exp
, 0, (void *)check
,
1649 CDEBUG(D_QUOTA
, "osc ioctl %d failed: %d\n", cmd
, rc
);
1650 if (copy_to_user((void *)arg
, check
,
1652 CDEBUG(D_QUOTA
, "copy_to_user failed\n");
1659 case LL_IOC_QUOTACTL
: {
1660 struct if_quotactl
*qctl
;
1662 qctl
= kzalloc(sizeof(*qctl
), GFP_NOFS
);
1666 if (copy_from_user(qctl
, (void *)arg
, sizeof(*qctl
))) {
1671 rc
= quotactl_ioctl(sbi
, qctl
);
1673 if (rc
== 0 && copy_to_user((void *)arg
, qctl
, sizeof(*qctl
)))
1680 case OBD_IOC_GETDTNAME
:
1681 case OBD_IOC_GETMDNAME
:
1682 return ll_get_obd_name(inode
, cmd
, arg
);
1683 case LL_IOC_FLUSHCTX
:
1684 return ll_flush_ctx(inode
);
1685 #ifdef CONFIG_FS_POSIX_ACL
1686 case LL_IOC_RMTACL
: {
1687 if (sbi
->ll_flags
& LL_SBI_RMT_CLIENT
&& is_root_inode(inode
)) {
1688 struct ll_file_data
*fd
= LUSTRE_FPRIVATE(file
);
1690 LASSERT(fd
!= NULL
);
1691 rc
= rct_add(&sbi
->ll_rct
, current_pid(), arg
);
1693 fd
->fd_flags
|= LL_FILE_RMTACL
;
1699 case LL_IOC_GETOBDCOUNT
: {
1701 struct obd_export
*exp
;
1703 if (copy_from_user(&count
, (int *)arg
, sizeof(int)))
1706 /* get ost count when count is zero, get mdt count otherwise */
1707 exp
= count
? sbi
->ll_md_exp
: sbi
->ll_dt_exp
;
1708 vallen
= sizeof(count
);
1709 rc
= obd_get_info(NULL
, exp
, sizeof(KEY_TGT_COUNT
),
1710 KEY_TGT_COUNT
, &vallen
, &count
, NULL
);
1712 CERROR("get target count failed: %d\n", rc
);
1716 if (copy_to_user((int *)arg
, &count
, sizeof(int)))
1721 case LL_IOC_PATH2FID
:
1722 if (copy_to_user((void *)arg
, ll_inode2fid(inode
),
1723 sizeof(struct lu_fid
)))
1726 case LL_IOC_GET_CONNECT_FLAGS
: {
1727 return obd_iocontrol(cmd
, sbi
->ll_md_exp
, 0, NULL
,
1728 (void __user
*)arg
);
1730 case OBD_IOC_CHANGELOG_SEND
:
1731 case OBD_IOC_CHANGELOG_CLEAR
:
1732 if (!capable(CFS_CAP_SYS_ADMIN
))
1735 rc
= copy_and_ioctl(cmd
, sbi
->ll_md_exp
, (void *)arg
,
1736 sizeof(struct ioc_changelog
));
1738 case OBD_IOC_FID2PATH
:
1739 return ll_fid2path(inode
, (void __user
*)arg
);
1740 case LL_IOC_HSM_REQUEST
: {
1741 struct hsm_user_request
*hur
;
1744 hur
= memdup_user((void *)arg
, sizeof(*hur
));
1746 return PTR_ERR(hur
);
1748 /* Compute the whole struct size */
1749 totalsize
= hur_len(hur
);
1754 /* Final size will be more than double totalsize */
1755 if (totalsize
>= MDS_MAXREQSIZE
/ 3)
1758 hur
= libcfs_kvzalloc(totalsize
, GFP_NOFS
);
1762 /* Copy the whole struct */
1763 if (copy_from_user(hur
, (void *)arg
, totalsize
)) {
1768 if (hur
->hur_request
.hr_action
== HUA_RELEASE
) {
1769 const struct lu_fid
*fid
;
1773 for (i
= 0; i
< hur
->hur_request
.hr_itemcount
; i
++) {
1774 fid
= &hur
->hur_user_item
[i
].hui_fid
;
1775 f
= search_inode_for_lustre(inode
->i_sb
, fid
);
1781 rc
= ll_hsm_release(f
);
1787 rc
= obd_iocontrol(cmd
, ll_i2mdexp(inode
), totalsize
,
1795 case LL_IOC_HSM_PROGRESS
: {
1796 struct hsm_progress_kernel hpk
;
1797 struct hsm_progress hp
;
1799 if (copy_from_user(&hp
, (void *)arg
, sizeof(hp
)))
1802 hpk
.hpk_fid
= hp
.hp_fid
;
1803 hpk
.hpk_cookie
= hp
.hp_cookie
;
1804 hpk
.hpk_extent
= hp
.hp_extent
;
1805 hpk
.hpk_flags
= hp
.hp_flags
;
1806 hpk
.hpk_errval
= hp
.hp_errval
;
1807 hpk
.hpk_data_version
= 0;
1809 /* File may not exist in Lustre; all progress
1810 * reported to Lustre root */
1811 rc
= obd_iocontrol(cmd
, sbi
->ll_md_exp
, sizeof(hpk
), &hpk
,
1815 case LL_IOC_HSM_CT_START
:
1816 rc
= copy_and_ioctl(cmd
, sbi
->ll_md_exp
, (void *)arg
,
1817 sizeof(struct lustre_kernelcomm
));
1820 case LL_IOC_HSM_COPY_START
: {
1821 struct hsm_copy
*copy
;
1824 copy
= memdup_user((char *)arg
, sizeof(*copy
));
1826 return PTR_ERR(copy
);
1828 rc
= ll_ioc_copy_start(inode
->i_sb
, copy
);
1829 if (copy_to_user((char *)arg
, copy
, sizeof(*copy
)))
1835 case LL_IOC_HSM_COPY_END
: {
1836 struct hsm_copy
*copy
;
1839 copy
= memdup_user((char *)arg
, sizeof(*copy
));
1841 return PTR_ERR(copy
);
1843 rc
= ll_ioc_copy_end(inode
->i_sb
, copy
);
1844 if (copy_to_user((char *)arg
, copy
, sizeof(*copy
)))
1851 return obd_iocontrol(cmd
, sbi
->ll_dt_exp
, 0, NULL
,
1852 (void __user
*)arg
);
1856 static loff_t
ll_dir_seek(struct file
*file
, loff_t offset
, int origin
)
1858 struct inode
*inode
= file
->f_mapping
->host
;
1859 struct ll_file_data
*fd
= LUSTRE_FPRIVATE(file
);
1860 struct ll_sb_info
*sbi
= ll_i2sbi(inode
);
1861 int api32
= ll_need_32bit_api(sbi
);
1862 loff_t ret
= -EINVAL
;
1869 offset
+= file
->f_pos
;
1875 offset
+= LL_DIR_END_OFF_32BIT
;
1877 offset
+= LL_DIR_END_OFF
;
1884 ((api32
&& offset
<= LL_DIR_END_OFF_32BIT
) ||
1885 (!api32
&& offset
<= LL_DIR_END_OFF
))) {
1886 if (offset
!= file
->f_pos
) {
1887 if ((api32
&& offset
== LL_DIR_END_OFF_32BIT
) ||
1888 (!api32
&& offset
== LL_DIR_END_OFF
))
1889 fd
->lfd_pos
= MDS_DIR_END_OFF
;
1890 else if (api32
&& sbi
->ll_flags
& LL_SBI_64BIT_HASH
)
1891 fd
->lfd_pos
= offset
<< 32;
1893 fd
->lfd_pos
= offset
;
1894 file
->f_pos
= offset
;
1895 file
->f_version
= 0;
1902 inode_unlock(inode
);
1906 static int ll_dir_open(struct inode
*inode
, struct file
*file
)
1908 return ll_file_open(inode
, file
);
1911 static int ll_dir_release(struct inode
*inode
, struct file
*file
)
1913 return ll_file_release(inode
, file
);
1916 const struct file_operations ll_dir_operations
= {
1917 .llseek
= ll_dir_seek
,
1918 .open
= ll_dir_open
,
1919 .release
= ll_dir_release
,
1920 .read
= generic_read_dir
,
1921 .iterate
= ll_readdir
,
1922 .unlocked_ioctl
= ll_dir_ioctl
,